/* Output Dwarf2 format symbol table information from the GNU C compiler.
- Copyright (C) 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000
+ Copyright (C) 1992, 1993, 1995, 1996, 1997, 1998, 1999, 2000, 2001
Free Software Foundation, Inc.
Contributed by Gary Funck (gary@intrepid.com).
Derived from DWARF 1 implementation of Ron Guilmette (rfg@monkeys.com).
#include "config.h"
#include "system.h"
-#include "defaults.h"
#include "tree.h"
#include "flags.h"
#include "rtl.h"
#include "regs.h"
#include "insn-config.h"
#include "reload.h"
+#include "function.h"
#include "output.h"
#include "expr.h"
#include "except.h"
#include "dwarf2.h"
#include "dwarf2out.h"
+#include "dwarf2asm.h"
#include "toplev.h"
#include "varray.h"
#include "ggc.h"
#include "md5.h"
#include "tm_p.h"
+#include "diagnostic.h"
+#include "debug.h"
+
+#ifdef DWARF2_DEBUGGING_INFO
+static void dwarf2out_source_line PARAMS ((unsigned int, const char *));
+#endif
+
+/* DWARF2 Abbreviation Glossary:
+ CFA = Canonical Frame Address
+ a fixed address on the stack which identifies a call frame.
+ We define it to be the value of SP just before the call insn.
+ The CFA register and offset, which may change during the course
+ of the function, are used to calculate its value at runtime.
+ CFI = Call Frame Instruction
+ an instruction for the DWARF2 abstract machine
+ CIE = Common Information Entry
+ information describing information common to one or more FDEs
+ DIE = Debugging Information Entry
+ FDE = Frame Description Entry
+ information describing the stack call frame, in particular,
+ how to restore registers
+
+ DW_CFA_... = DWARF2 CFA call frame instruction
+ DW_TAG_... = DWARF2 DIE tag */
/* Decide whether we want to emit frame unwind information for the current
translation unit. */
#endif
#ifdef DWARF2_UNWIND_INFO
|| flag_unwind_tables
- || (flag_exceptions && ! exceptions_via_longjmp)
+ || (flag_exceptions && ! USING_SJLJ_EXCEPTIONS)
#endif
);
}
+/* The number of the current function definition for which debugging
+ information is being generated. These numbers range from 1 up to the
+ maximum number of function definitions contained within the current
+ compilation unit. These numbers are used to create unique label id's
+ unique to each function definition. */
+unsigned current_funcdef_number = 0;
+
#if defined (DWARF2_DEBUGGING_INFO) || defined (DWARF2_UNWIND_INFO)
/* How to start an assembler comment. */
const char *dw_fde_current_label;
const char *dw_fde_end;
dw_cfi_ref dw_fde_cfi;
- int nothrow;
+ unsigned funcdef_number;
+ unsigned nothrow : 1;
+ unsigned uses_eh_lsda : 1;
}
dw_fde_node;
/* Maximum size (in bytes) of an artificially generated label. */
#define MAX_ARTIFICIAL_LABEL_BYTES 30
-/* Make sure we know the sizes of the various types dwarf can describe. These
- are only defaults. If the sizes are different for your target, you should
- override these values by defining the appropriate symbols in your tm.h
- file. */
-
-#ifndef CHAR_TYPE_SIZE
-#define CHAR_TYPE_SIZE BITS_PER_UNIT
-#endif
-
/* The size of the target's pointer type. */
#ifndef PTR_SIZE
#define PTR_SIZE (POINTER_SIZE / BITS_PER_UNIT)
((((SIZE) + (BOUNDARY) - 1) / (BOUNDARY)) * (BOUNDARY))
/* Offsets recorded in opcodes are a multiple of this alignment factor. */
+#ifndef DWARF_CIE_DATA_ALIGNMENT
#ifdef STACK_GROWS_DOWNWARD
#define DWARF_CIE_DATA_ALIGNMENT (-((int) UNITS_PER_WORD))
#else
#define DWARF_CIE_DATA_ALIGNMENT ((int) UNITS_PER_WORD)
#endif
+#endif /* not DWARF_CIE_DATA_ALIGNMENT */
/* A pointer to the base of a table that contains frame description
information for each routine. */
/* A list of call frame insns for the CIE. */
static dw_cfi_ref cie_cfi_head;
-/* The number of the current function definition for which debugging
- information is being generated. These numbers range from 1 up to the
- maximum number of function definitions contained within the current
- compilation unit. These numbers are used to create unique label id's
- unique to each function definition. */
-static unsigned current_funcdef_number = 0;
-
/* Some DWARF extensions (e.g., MIPS/SGI) implement a subprogram
attribute that accelerates the lookup of the FDE associated
with the subprogram. This variable holds the table index of the FDE
static const char *dwarf_cfi_name PARAMS ((unsigned));
static dw_cfi_ref new_cfi PARAMS ((void));
static void add_cfi PARAMS ((dw_cfi_ref *, dw_cfi_ref));
-static unsigned long size_of_uleb128 PARAMS ((unsigned long));
-static unsigned long size_of_sleb128 PARAMS ((long));
-static void output_uleb128 PARAMS ((unsigned long));
-static void output_sleb128 PARAMS ((long));
static void add_fde_cfi PARAMS ((const char *, dw_cfi_ref));
static void lookup_cfa_1 PARAMS ((dw_cfi_ref, dw_cfa_location *));
static void lookup_cfa PARAMS ((dw_cfa_location *));
static void reg_save PARAMS ((const char *, unsigned,
unsigned, long));
static void initial_return_save PARAMS ((rtx));
-static void output_cfi PARAMS ((dw_cfi_ref, dw_fde_ref));
+static long stack_adjust_offset PARAMS ((rtx));
+static void output_cfi PARAMS ((dw_cfi_ref, dw_fde_ref, int));
static void output_call_frame_info PARAMS ((int));
static void dwarf2out_stack_adjust PARAMS ((rtx));
+static void queue_reg_save PARAMS ((const char *, rtx, long));
+static void flush_queued_reg_saves PARAMS ((void));
+static bool clobbers_queued_reg_save PARAMS ((rtx));
static void dwarf2out_frame_debug_expr PARAMS ((rtx, const char *));
/* Support for complex CFA locations. */
PARAMS ((dw_cfa_location *));
static void def_cfa_1 PARAMS ((const char *, dw_cfa_location *));
-/* Definitions of defaults for assembler-dependent names of various
- pseudo-ops and section names.
- Theses may be overridden in the tm.h file (if necessary) for a particular
- assembler. */
-
-#ifdef OBJECT_FORMAT_ELF
-#ifndef UNALIGNED_SHORT_ASM_OP
-#define UNALIGNED_SHORT_ASM_OP ".2byte"
-#endif
-#ifndef UNALIGNED_INT_ASM_OP
-#define UNALIGNED_INT_ASM_OP ".4byte"
-#endif
-#ifndef UNALIGNED_DOUBLE_INT_ASM_OP
-#define UNALIGNED_DOUBLE_INT_ASM_OP ".8byte"
-#endif
-#endif /* OBJECT_FORMAT_ELF */
-
-#ifndef ASM_BYTE_OP
-#define ASM_BYTE_OP ".byte"
+/* How to start an assembler comment. */
+#ifndef ASM_COMMENT_START
+#define ASM_COMMENT_START ";#"
#endif
/* Data and reference forms for relocatable data. */
/* Pseudo-op for defining a new section. */
#ifndef SECTION_ASM_OP
-#define SECTION_ASM_OP ".section"
+#define SECTION_ASM_OP "\t.section\t"
#endif
/* The default format used by the ASM_OUTPUT_SECTION macro (see below) to
#ifdef PUSHSECTION_FORMAT
#define SECTION_FORMAT PUSHSECTION_FORMAT
#else
-#define SECTION_FORMAT "\t%s\t%s\n"
+#define SECTION_FORMAT "%s%s\n"
#endif
#endif
-#ifndef FRAME_SECTION
-#define FRAME_SECTION ".debug_frame"
+#ifndef DEBUG_FRAME_SECTION
+#define DEBUG_FRAME_SECTION ".debug_frame"
#endif
#ifndef FUNC_BEGIN_LABEL
#define CIE_AFTER_SIZE_LABEL "LSCIE"
#define CIE_END_LABEL "LECIE"
#define CIE_LENGTH_LABEL "LLCIE"
-#define FDE_AFTER_SIZE_LABEL "LSFDE"
+#define FDE_LABEL "LSFDE"
+#define FDE_AFTER_SIZE_LABEL "LASFDE"
#define FDE_END_LABEL "LEFDE"
#define FDE_LENGTH_LABEL "LLFDE"
+#define LINE_NUMBER_BEGIN_LABEL "LSLT"
+#define LINE_NUMBER_END_LABEL "LELT"
+#define LN_PROLOG_AS_LABEL "LASLTP"
+#define LN_PROLOG_END_LABEL "LELTP"
#define DIE_LABEL_PREFIX "DW"
/* Definitions of defaults for various types of primitive assembly language
fprintf ((FILE), SECTION_FORMAT, SECTION_ASM_OP, SECTION)
#endif
-#ifndef ASM_OUTPUT_DWARF_DATA1
-#define ASM_OUTPUT_DWARF_DATA1(FILE,VALUE) \
- fprintf ((FILE), "\t%s\t0x%x", ASM_BYTE_OP, (unsigned) (VALUE))
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DELTA1
-#define ASM_OUTPUT_DWARF_DELTA1(FILE,LABEL1,LABEL2) \
- do { fprintf ((FILE), "\t%s\t", ASM_BYTE_OP); \
- assemble_name (FILE, LABEL1); \
- fprintf (FILE, "-"); \
- assemble_name (FILE, LABEL2); \
- } while (0)
-#endif
-
-#ifdef UNALIGNED_INT_ASM_OP
-
-#ifndef UNALIGNED_OFFSET_ASM_OP
-#define UNALIGNED_OFFSET_ASM_OP \
- (DWARF_OFFSET_SIZE == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP : UNALIGNED_INT_ASM_OP)
-#endif
-
-#ifndef UNALIGNED_WORD_ASM_OP
-#define UNALIGNED_WORD_ASM_OP \
- ((DWARF2_ADDR_SIZE) == 8 ? UNALIGNED_DOUBLE_INT_ASM_OP \
- : (DWARF2_ADDR_SIZE) == 2 ? UNALIGNED_SHORT_ASM_OP \
- : UNALIGNED_INT_ASM_OP)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DELTA2
-#define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \
- do { fprintf ((FILE), "\t%s\t", UNALIGNED_SHORT_ASM_OP); \
- assemble_name (FILE, LABEL1); \
- fprintf (FILE, "-"); \
- assemble_name (FILE, LABEL2); \
- } while (0)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DELTA4
-#define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \
- do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \
- assemble_name (FILE, LABEL1); \
- fprintf (FILE, "-"); \
- assemble_name (FILE, LABEL2); \
- } while (0)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DELTA
-#define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \
- do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \
- assemble_name (FILE, LABEL1); \
- fprintf (FILE, "-"); \
- assemble_name (FILE, LABEL2); \
- } while (0)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_ADDR_DELTA
-#define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \
- do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \
- assemble_name (FILE, LABEL1); \
- fprintf (FILE, "-"); \
- assemble_name (FILE, LABEL2); \
- } while (0)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_ADDR
-#define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \
- do { fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \
- assemble_name (FILE, LABEL); \
- } while (0)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_ADDR_CONST
-#define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX) \
- do { \
- fprintf ((FILE), "\t%s\t", UNALIGNED_WORD_ASM_OP); \
- output_addr_const ((FILE), (RTX)); \
- } while (0)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_OFFSET4
-#define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \
- do { fprintf ((FILE), "\t%s\t", UNALIGNED_INT_ASM_OP); \
- assemble_name (FILE, LABEL); \
- } while (0)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_OFFSET
-#define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \
- do { fprintf ((FILE), "\t%s\t", UNALIGNED_OFFSET_ASM_OP); \
- assemble_name (FILE, LABEL); \
- } while (0)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DATA2
-#define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \
- fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_SHORT_ASM_OP, (unsigned) (VALUE))
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DATA4
-#define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \
- fprintf ((FILE), "\t%s\t0x%x", UNALIGNED_INT_ASM_OP, (unsigned) (VALUE))
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DATA8
-#define ASM_OUTPUT_DWARF_DATA8(FILE,VALUE) \
- fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_DOUBLE_INT_ASM_OP, \
- (unsigned long) (VALUE))
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DATA
-#define ASM_OUTPUT_DWARF_DATA(FILE,VALUE) \
- fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_OFFSET_ASM_OP, \
- (unsigned long) (VALUE))
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_ADDR_DATA
-#define ASM_OUTPUT_DWARF_ADDR_DATA(FILE,VALUE) \
- fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_WORD_ASM_OP, \
- (unsigned long) (VALUE))
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_CONST_DOUBLE
-#define ASM_OUTPUT_DWARF_CONST_DOUBLE(FILE,HIGH_VALUE,LOW_VALUE) \
- do { \
- if (WORDS_BIG_ENDIAN) \
- { \
- fprintf ((FILE), "\t%s\t0x%lx\n", UNALIGNED_INT_ASM_OP, (HIGH_VALUE));\
- fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (LOW_VALUE));\
- } \
- else \
- { \
- fprintf ((FILE), "\t%s\t0x%lx\n", UNALIGNED_INT_ASM_OP, (LOW_VALUE)); \
- fprintf ((FILE), "\t%s\t0x%lx", UNALIGNED_INT_ASM_OP, (HIGH_VALUE)); \
- } \
- } while (0)
-#endif
-
-#else /* UNALIGNED_INT_ASM_OP */
-
-/* We don't have unaligned support, let's hope the normal output works for
- .debug_frame. But we know it won't work for .debug_info. */
-
-#ifdef DWARF2_DEBUGGING_INFO
- #error DWARF2_DEBUGGING_INFO requires UNALIGNED_INT_ASM_OP.
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_ADDR
-#define ASM_OUTPUT_DWARF_ADDR(FILE,LABEL) \
- assemble_integer (gen_rtx_SYMBOL_REF (Pmode, LABEL), DWARF2_ADDR_SIZE, 1)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_ADDR_CONST
-#define ASM_OUTPUT_DWARF_ADDR_CONST(FILE,RTX) ASM_OUTPUT_DWARF_ADDR (FILE,RTX)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_OFFSET4
-#define ASM_OUTPUT_DWARF_OFFSET4(FILE,LABEL) \
- assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_OFFSET
-#define ASM_OUTPUT_DWARF_OFFSET(FILE,LABEL) \
- assemble_integer (gen_rtx_SYMBOL_REF (SImode, LABEL), 4, 1)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DELTA2
-#define ASM_OUTPUT_DWARF_DELTA2(FILE,LABEL1,LABEL2) \
- assemble_integer (gen_rtx_MINUS (HImode, \
- gen_rtx_SYMBOL_REF (Pmode, LABEL1), \
- gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \
- 2, 1)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DELTA4
-#define ASM_OUTPUT_DWARF_DELTA4(FILE,LABEL1,LABEL2) \
- assemble_integer (gen_rtx_MINUS (SImode, \
- gen_rtx_SYMBOL_REF (Pmode, LABEL1), \
- gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \
- 4, 1)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_ADDR_DELTA
-#define ASM_OUTPUT_DWARF_ADDR_DELTA(FILE,LABEL1,LABEL2) \
- assemble_integer (gen_rtx_MINUS (Pmode, \
- gen_rtx_SYMBOL_REF (Pmode, LABEL1), \
- gen_rtx_SYMBOL_REF (Pmode, LABEL2)), \
- DWARF2_ADDR_SIZE, 1)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DELTA
-#define ASM_OUTPUT_DWARF_DELTA(FILE,LABEL1,LABEL2) \
- ASM_OUTPUT_DWARF_DELTA4 (FILE,LABEL1,LABEL2)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DATA2
-#define ASM_OUTPUT_DWARF_DATA2(FILE,VALUE) \
- assemble_integer (GEN_INT (VALUE), 2, 1)
-#endif
-
-#ifndef ASM_OUTPUT_DWARF_DATA4
-#define ASM_OUTPUT_DWARF_DATA4(FILE,VALUE) \
- assemble_integer (GEN_INT (VALUE), 4, 1)
-#endif
-
-#endif /* UNALIGNED_INT_ASM_OP */
-
#ifdef SET_ASM_OP
#ifndef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL
#define ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL(FILE, SY, HI, LO) \
do { \
- fprintf (FILE, "\t%s\t", SET_ASM_OP); \
+ fprintf (FILE, "%s", SET_ASM_OP); \
assemble_name (FILE, SY); \
fputc (',', FILE); \
assemble_name (FILE, HI); \
#endif
#endif /* SET_ASM_OP */
-/* This is similar to the default ASM_OUTPUT_ASCII, except that no trailing
- newline is produced. When flag_debug_asm is asserted, we add commentary
- at the end of the line, so we must avoid output of a newline here. */
-#ifndef ASM_OUTPUT_DWARF_STRING
-#define ASM_OUTPUT_DWARF_STRING(FILE,P) \
- do { \
- register int slen = strlen(P); \
- register const char *p = (P); \
- register int i; \
- fprintf (FILE, "\t.ascii \""); \
- for (i = 0; i < slen; i++) \
- { \
- register int c = p[i]; \
- if (c == '\"' || c == '\\') \
- putc ('\\', FILE); \
- if (ISPRINT(c)) \
- putc (c, FILE); \
- else \
- { \
- fprintf (FILE, "\\%o", c); \
- } \
- } \
- fprintf (FILE, "\\0\""); \
- } \
- while (0)
-#endif
-
/* The DWARF 2 CFA column which tracks the return address. Normally this
is the column for PC, or the first column after all of the hard
registers. */
#ifndef INCOMING_FRAME_SP_OFFSET
#define INCOMING_FRAME_SP_OFFSET 0
#endif
-
+\f
/* Return a pointer to a copy of the section string name S with all
attributes stripped off, and an asterisk prepended (for assemble_name). */
if (offset < 0)
continue;
- emit_move_insn (change_address (mem, mode,
- plus_constant (addr, offset)),
- GEN_INT (size));
+ emit_move_insn (adjust_address (mem, mode, offset), GEN_INT (size));
}
}
}
/* The current rule for calculating the DWARF2 canonical frame address. */
-dw_cfa_location cfa;
+static dw_cfa_location cfa;
/* The register used for saving registers to the stack, and its offset
from the CFA. */
-dw_cfa_location cfa_store;
+static dw_cfa_location cfa_store;
/* The running total of the size of arguments pushed onto the stack. */
static long args_size;
def_cfa_1 (label, &loc);
}
-/* This routine does the actual work. The CFA is now calculated from
+/* This routine does the actual work. The CFA is now calculated from
the dw_cfa_location structure. */
static void
def_cfa_1 (label, loc_p)
{
if (loc.indirect == 0
|| loc.base_offset == old_cfa.base_offset)
+ /* Nothing changed so no need to issue any call frame
+ instructions. */
return;
}
if (loc.reg == old_cfa.reg && !loc.indirect)
{
+ /* Construct a "DW_CFA_def_cfa_offset <offset>" instruction,
+ indicating the CFA register did not change but the offset
+ did. */
cfi->dw_cfi_opc = DW_CFA_def_cfa_offset;
cfi->dw_cfi_oprnd1.dw_cfi_offset = loc.offset;
}
else if (loc.offset == old_cfa.offset && old_cfa.reg != (unsigned long) -1
&& !loc.indirect)
{
+ /* Construct a "DW_CFA_def_cfa_register <register>" instruction,
+ indicating the CFA register has changed to <register> but the
+ offset has not changed. */
cfi->dw_cfi_opc = DW_CFA_def_cfa_register;
cfi->dw_cfi_oprnd1.dw_cfi_reg_num = loc.reg;
}
else if (loc.indirect == 0)
{
+ /* Construct a "DW_CFA_def_cfa <register> <offset>" instruction,
+ indicating the CFA register has changed to <register> with
+ the specified offset. */
cfi->dw_cfi_opc = DW_CFA_def_cfa;
cfi->dw_cfi_oprnd1.dw_cfi_reg_num = loc.reg;
cfi->dw_cfi_oprnd2.dw_cfi_offset = loc.offset;
}
else
{
+ /* Construct a DW_CFA_def_cfa_expression instruction to
+ calculate the CFA using a full location expression since no
+ register-offset pair is available. */
struct dw_loc_descr_struct *loc_list;
cfi->dw_cfi_opc = DW_CFA_def_cfa_expression;
loc_list = build_cfa_loc (&loc);
else
cfi->dw_cfi_opc = DW_CFA_offset;
+#ifdef ENABLE_CHECKING
+ {
+ /* If we get an offset that is not a multiple of
+ DWARF_CIE_DATA_ALIGNMENT, there is either a bug in the
+ definition of DWARF_CIE_DATA_ALIGNMENT, or a bug in the machine
+ description. */
+ long check_offset = offset / DWARF_CIE_DATA_ALIGNMENT;
+
+ if (check_offset * DWARF_CIE_DATA_ALIGNMENT != offset)
+ abort ();
+ }
+#endif
offset /= DWARF_CIE_DATA_ALIGNMENT;
if (offset < 0)
{
/* Given a SET, calculate the amount of stack adjustment it
contains. */
-static long stack_adjust_offset (pattern)
+static long
+stack_adjust_offset (pattern)
rtx pattern;
{
rtx src = SET_SRC (pattern);
src = XEXP (dest, 0);
code = GET_CODE (src);
- if (! (code == PRE_DEC || code == PRE_INC)
+ if (! (code == PRE_DEC || code == PRE_INC
+ || code == PRE_MODIFY)
|| XEXP (src, 0) != stack_pointer_rtx)
return 0;
- offset = GET_MODE_SIZE (GET_MODE (dest));
+ if (code == PRE_MODIFY)
+ {
+ rtx val = XEXP (XEXP (src, 1), 1);
+ /* We handle only adjustments by constant amount. */
+ if (GET_CODE (XEXP (src, 1)) != PLUS ||
+ GET_CODE (val) != CONST_INT)
+ abort();
+ offset = -INTVAL (val);
+ }
+ else offset = GET_MODE_SIZE (GET_MODE (dest));
}
else
return 0;
long offset;
const char *label;
- if (! asynchronous_exceptions && GET_CODE (insn) == CALL_INSN)
+ if (! flag_non_call_exceptions && GET_CODE (insn) == CALL_INSN)
{
/* Extract the size of the args from the CALL rtx itself. */
/* If only calls can throw, and we have a frame pointer,
save up adjustments until we see the CALL_INSN. */
- else if (! asynchronous_exceptions
+ else if (! flag_non_call_exceptions
&& cfa.reg != STACK_POINTER_REGNUM)
return;
}
else
return;
-
+
if (offset == 0)
return;
dwarf2out_args_size (label, args_size);
}
-/* A temporary register used in adjusting SP or setting up the store_reg. */
-static unsigned cfa_temp_reg;
+/* We delay emitting a register save until either (a) we reach the end
+ of the prologue or (b) the register is clobbered. This clusters
+ register saves so that there are fewer pc advances. */
-/* A temporary value used in adjusting SP or setting up the store_reg. */
-static long cfa_temp_value;
+struct queued_reg_save
+{
+ struct queued_reg_save *next;
+ rtx reg;
+ long cfa_offset;
+};
-/* Record call frame debugging information for an expression, which either
- sets SP or FP (adjusting how we calculate the frame address) or saves a
- register to the stack. */
+static struct queued_reg_save *queued_reg_saves;
+static const char *last_reg_save_label;
+
+static void
+queue_reg_save (label, reg, offset)
+ const char *label;
+ rtx reg;
+ long offset;
+{
+ struct queued_reg_save *q = (struct queued_reg_save *) xmalloc (sizeof (*q));
+
+ q->next = queued_reg_saves;
+ q->reg = reg;
+ q->cfa_offset = offset;
+ queued_reg_saves = q;
+
+ last_reg_save_label = label;
+}
+
+static void
+flush_queued_reg_saves ()
+{
+ struct queued_reg_save *q, *next;
+
+ for (q = queued_reg_saves; q ; q = next)
+ {
+ dwarf2out_reg_save (last_reg_save_label, REGNO (q->reg), q->cfa_offset);
+ next = q->next;
+ free (q);
+ }
+
+ queued_reg_saves = NULL;
+ last_reg_save_label = NULL;
+}
+
+static bool
+clobbers_queued_reg_save (insn)
+ rtx insn;
+{
+ struct queued_reg_save *q;
+
+ for (q = queued_reg_saves; q ; q = q->next)
+ if (modified_in_p (q->reg, insn))
+ return true;
+
+ return false;
+}
+
+
+/* A temporary register holding an integral value used in adjusting SP
+ or setting up the store_reg. The "offset" field holds the integer
+ value, not an offset. */
+static dw_cfa_location cfa_temp;
+
+/* Record call frame debugging information for an expression EXPR,
+ which either sets SP or FP (adjusting how we calculate the frame
+ address) or saves a register to the stack. LABEL indicates the
+ address of EXPR.
+
+ This function encodes a state machine mapping rtxes to actions on
+ cfa, cfa_store, and cfa_temp.reg. We describe these rules so
+ users need not read the source code.
+
+ The High-Level Picture
+
+ Changes in the register we use to calculate the CFA: Currently we
+ assume that if you copy the CFA register into another register, we
+ should take the other one as the new CFA register; this seems to
+ work pretty well. If it's wrong for some target, it's simple
+ enough not to set RTX_FRAME_RELATED_P on the insn in question.
+
+ Changes in the register we use for saving registers to the stack:
+ This is usually SP, but not always. Again, we deduce that if you
+ copy SP into another register (and SP is not the CFA register),
+ then the new register is the one we will be using for register
+ saves. This also seems to work.
+
+ Register saves: There's not much guesswork about this one; if
+ RTX_FRAME_RELATED_P is set on an insn which modifies memory, it's a
+ register save, and the register used to calculate the destination
+ had better be the one we think we're using for this purpose.
+
+ Except: If the register being saved is the CFA register, and the
+ offset is non-zero, we are saving the CFA, so we assume we have to
+ use DW_CFA_def_cfa_expression. If the offset is 0, we assume that
+ the intent is to save the value of SP from the previous frame.
+
+ Invariants / Summaries of Rules
+
+ cfa current rule for calculating the CFA. It usually
+ consists of a register and an offset.
+ cfa_store register used by prologue code to save things to the stack
+ cfa_store.offset is the offset from the value of
+ cfa_store.reg to the actual CFA
+ cfa_temp register holding an integral value. cfa_temp.offset
+ stores the value, which will be used to adjust the
+ stack pointer. cfa_temp is also used like cfa_store,
+ to track stores to the stack via fp or a temp reg.
+
+ Rules 1- 4: Setting a register's value to cfa.reg or an expression
+ with cfa.reg as the first operand changes the cfa.reg and its
+ cfa.offset. Rule 1 and 4 also set cfa_temp.reg and
+ cfa_temp.offset.
+
+ Rules 6- 9: Set a non-cfa.reg register value to a constant or an
+ expression yielding a constant. This sets cfa_temp.reg
+ and cfa_temp.offset.
+
+ Rule 5: Create a new register cfa_store used to save items to the
+ stack.
+
+ Rules 10-14: Save a register to the stack. Define offset as the
+ difference of the original location and cfa_store's
+ location (or cfa_temp's location if cfa_temp is used).
+
+ The Rules
+
+ "{a,b}" indicates a choice of a xor b.
+ "<reg>:cfa.reg" indicates that <reg> must equal cfa.reg.
+
+ Rule 1:
+ (set <reg1> <reg2>:cfa.reg)
+ effects: cfa.reg = <reg1>
+ cfa.offset unchanged
+ cfa_temp.reg = <reg1>
+ cfa_temp.offset = cfa.offset
+
+ Rule 2:
+ (set sp ({minus,plus,losum} {sp,fp}:cfa.reg {<const_int>,<reg>:cfa_temp.reg}))
+ effects: cfa.reg = sp if fp used
+ cfa.offset += {+/- <const_int>, cfa_temp.offset} if cfa.reg==sp
+ cfa_store.offset += {+/- <const_int>, cfa_temp.offset}
+ if cfa_store.reg==sp
+
+ Rule 3:
+ (set fp ({minus,plus,losum} <reg>:cfa.reg <const_int>))
+ effects: cfa.reg = fp
+ cfa_offset += +/- <const_int>
+
+ Rule 4:
+ (set <reg1> ({plus,losum} <reg2>:cfa.reg <const_int>))
+ constraints: <reg1> != fp
+ <reg1> != sp
+ effects: cfa.reg = <reg1>
+ cfa_temp.reg = <reg1>
+ cfa_temp.offset = cfa.offset
+
+ Rule 5:
+ (set <reg1> (plus <reg2>:cfa_temp.reg sp:cfa.reg))
+ constraints: <reg1> != fp
+ <reg1> != sp
+ effects: cfa_store.reg = <reg1>
+ cfa_store.offset = cfa.offset - cfa_temp.offset
+
+ Rule 6:
+ (set <reg> <const_int>)
+ effects: cfa_temp.reg = <reg>
+ cfa_temp.offset = <const_int>
+
+ Rule 7:
+ (set <reg1>:cfa_temp.reg (ior <reg2>:cfa_temp.reg <const_int>))
+ effects: cfa_temp.reg = <reg1>
+ cfa_temp.offset |= <const_int>
+
+ Rule 8:
+ (set <reg> (high <exp>))
+ effects: none
+
+ Rule 9:
+ (set <reg> (lo_sum <exp> <const_int>))
+ effects: cfa_temp.reg = <reg>
+ cfa_temp.offset = <const_int>
+
+ Rule 10:
+ (set (mem (pre_modify sp:cfa_store (???? <reg1> <const_int>))) <reg2>)
+ effects: cfa_store.offset -= <const_int>
+ cfa.offset = cfa_store.offset if cfa.reg == sp
+ cfa.reg = sp
+ cfa.base_offset = -cfa_store.offset
+
+ Rule 11:
+ (set (mem ({pre_inc,pre_dec} sp:cfa_store.reg)) <reg>)
+ effects: cfa_store.offset += -/+ mode_size(mem)
+ cfa.offset = cfa_store.offset if cfa.reg == sp
+ cfa.reg = sp
+ cfa.base_offset = -cfa_store.offset
+
+ Rule 12:
+ (set (mem ({minus,plus,losum} <reg1>:{cfa_store,cfa_temp} <const_int>)) <reg2>)
+ effects: cfa.reg = <reg1>
+ cfa.base_offset = -/+ <const_int> - {cfa_store,cfa_temp}.offset
+
+ Rule 13:
+ (set (mem <reg1>:{cfa_store,cfa_temp}) <reg2>)
+ effects: cfa.reg = <reg1>
+ cfa.base_offset = -{cfa_store,cfa_temp}.offset
+
+ Rule 14:
+ (set (mem (postinc <reg1>:cfa_temp <const_int>)) <reg2>)
+ effects: cfa.reg = <reg1>
+ cfa.base_offset = -cfa_temp.offset
+ cfa_temp.offset -= mode_size(mem) */
static void
dwarf2out_frame_debug_expr (expr, label)
/* If RTX_FRAME_RELATED_P is set on a PARALLEL, process each member of
the PARALLEL independently. The first element is always processed if
- it is a SET. This is for backward compatability. Other elements
+ it is a SET. This is for backward compatibility. Other elements
are processed only if they are SETs and the RTX_FRAME_RELATED_P
flag is set in them. */
switch (GET_CODE (dest))
{
case REG:
+ /* Rule 1 */
/* Update the CFA rule wrt SP or FP. Make sure src is
relative to the current CFA register. */
switch (GET_CODE (src))
FP. So we just rely on the backends to only set
RTX_FRAME_RELATED_P on appropriate insns. */
cfa.reg = REGNO (dest);
+ cfa_temp.reg = cfa.reg;
+ cfa_temp.offset = cfa.offset;
break;
case PLUS:
case MINUS:
+ case LO_SUM:
if (dest == stack_pointer_rtx)
{
+ /* Rule 2 */
/* Adjusting SP. */
switch (GET_CODE (XEXP (src, 1)))
{
offset = INTVAL (XEXP (src, 1));
break;
case REG:
- if ((unsigned) REGNO (XEXP (src, 1)) != cfa_temp_reg)
+ if ((unsigned) REGNO (XEXP (src, 1)) != cfa_temp.reg)
abort ();
- offset = cfa_temp_value;
+ offset = cfa_temp.offset;
break;
default:
abort ();
abort ();
cfa.reg = STACK_POINTER_REGNUM;
}
+ else if (GET_CODE (src) == LO_SUM)
+ /* Assume we've set the source reg of the LO_SUM from sp. */
+ ;
else if (XEXP (src, 0) != stack_pointer_rtx)
abort ();
- if (GET_CODE (src) == PLUS)
+ if (GET_CODE (src) != MINUS)
offset = -offset;
if (cfa.reg == STACK_POINTER_REGNUM)
cfa.offset += offset;
}
else if (dest == hard_frame_pointer_rtx)
{
+ /* Rule 3 */
/* Either setting the FP from an offset of the SP,
or adjusting the FP */
if (! frame_pointer_needed)
&& GET_CODE (XEXP (src, 1)) == CONST_INT)
{
offset = INTVAL (XEXP (src, 1));
- if (GET_CODE (src) == PLUS)
+ if (GET_CODE (src) != MINUS)
offset = -offset;
cfa.offset += offset;
cfa.reg = HARD_FRAME_POINTER_REGNUM;
}
else
{
- if (GET_CODE (src) != PLUS
- || XEXP (src, 1) != stack_pointer_rtx)
- abort ();
- if (GET_CODE (XEXP (src, 0)) != REG
- || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp_reg)
+ if (GET_CODE (src) == MINUS)
abort ();
- if (cfa.reg != STACK_POINTER_REGNUM)
+
+ /* Rule 4 */
+ if (GET_CODE (XEXP (src, 0)) == REG
+ && REGNO (XEXP (src, 0)) == cfa.reg
+ && GET_CODE (XEXP (src, 1)) == CONST_INT)
+ {
+ /* Setting a temporary CFA register that will be copied
+ into the FP later on. */
+ offset = - INTVAL (XEXP (src, 1));
+ cfa.offset += offset;
+ cfa.reg = REGNO (dest);
+ /* Or used to save regs to the stack. */
+ cfa_temp.reg = cfa.reg;
+ cfa_temp.offset = cfa.offset;
+ }
+ /* Rule 5 */
+ else if (GET_CODE (XEXP (src, 0)) == REG
+ && REGNO (XEXP (src, 0)) == cfa_temp.reg
+ && XEXP (src, 1) == stack_pointer_rtx)
+ {
+ /* Setting a scratch register that we will use instead
+ of SP for saving registers to the stack. */
+ if (cfa.reg != STACK_POINTER_REGNUM)
+ abort ();
+ cfa_store.reg = REGNO (dest);
+ cfa_store.offset = cfa.offset - cfa_temp.offset;
+ }
+ /* Rule 9 */
+ else if (GET_CODE (src) == LO_SUM
+ && GET_CODE (XEXP (src, 1)) == CONST_INT)
+ {
+ cfa_temp.reg = REGNO (dest);
+ cfa_temp.offset = INTVAL (XEXP (src, 1));
+ }
+ else
abort ();
- cfa_store.reg = REGNO (dest);
- cfa_store.offset = cfa.offset - cfa_temp_value;
}
break;
+ /* Rule 6 */
case CONST_INT:
- cfa_temp_reg = REGNO (dest);
- cfa_temp_value = INTVAL (src);
+ cfa_temp.reg = REGNO (dest);
+ cfa_temp.offset = INTVAL (src);
break;
+ /* Rule 7 */
case IOR:
if (GET_CODE (XEXP (src, 0)) != REG
- || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp_reg
- || (unsigned) REGNO (dest) != cfa_temp_reg
+ || (unsigned) REGNO (XEXP (src, 0)) != cfa_temp.reg
|| GET_CODE (XEXP (src, 1)) != CONST_INT)
abort ();
- cfa_temp_value |= INTVAL (XEXP (src, 1));
+ if ((unsigned) REGNO (dest) != cfa_temp.reg)
+ cfa_temp.reg = REGNO (dest);
+ cfa_temp.offset |= INTVAL (XEXP (src, 1));
+ break;
+
+ /* Skip over HIGH, assuming it will be followed by a LO_SUM,
+ which will fill in all of the bits. */
+ /* Rule 8 */
+ case HIGH:
break;
default:
def_cfa_1 (label, &cfa);
break;
- /* Skip over HIGH, assuming it will be followed by a LO_SUM, which
- will fill in all of the bits. */
- case HIGH:
- break;
-
- case LO_SUM:
- cfa_temp_reg = REGNO (dest);
- cfa_temp_value = INTVAL (XEXP (src, 1));
- break;
-
case MEM:
if (GET_CODE (src) != REG)
abort ();
CFA register. */
switch (GET_CODE (XEXP (dest, 0)))
{
+ /* Rule 10 */
/* With a push. */
+ case PRE_MODIFY:
+ /* We can't handle variable size modifications. */
+ if (GET_CODE (XEXP (XEXP (XEXP (dest, 0), 1), 1)) != CONST_INT)
+ abort();
+ offset = -INTVAL (XEXP (XEXP (XEXP (dest, 0), 1), 1));
+
+ if (REGNO (XEXP (XEXP (dest, 0), 0)) != STACK_POINTER_REGNUM
+ || cfa_store.reg != STACK_POINTER_REGNUM)
+ abort ();
+ cfa_store.offset += offset;
+ if (cfa.reg == STACK_POINTER_REGNUM)
+ cfa.offset = cfa_store.offset;
+
+ offset = -cfa_store.offset;
+ break;
+ /* Rule 11 */
case PRE_INC:
case PRE_DEC:
offset = GET_MODE_SIZE (GET_MODE (dest));
offset = -cfa_store.offset;
break;
+ /* Rule 12 */
/* With an offset. */
case PLUS:
case MINUS:
+ case LO_SUM:
+ if (GET_CODE (XEXP (XEXP (dest, 0), 1)) != CONST_INT)
+ abort ();
offset = INTVAL (XEXP (XEXP (dest, 0), 1));
if (GET_CODE (XEXP (dest, 0)) == MINUS)
offset = -offset;
- if (cfa_store.reg != (unsigned) REGNO (XEXP (XEXP (dest, 0), 0)))
+ if (cfa_store.reg == (unsigned) REGNO (XEXP (XEXP (dest, 0), 0)))
+ offset -= cfa_store.offset;
+ else if (cfa_temp.reg == (unsigned) REGNO (XEXP (XEXP (dest, 0), 0)))
+ offset -= cfa_temp.offset;
+ else
abort ();
- offset -= cfa_store.offset;
break;
+ /* Rule 13 */
/* Without an offset. */
case REG:
- if (cfa_store.reg != (unsigned) REGNO (XEXP (dest, 0)))
+ if (cfa_store.reg == (unsigned) REGNO (XEXP (dest, 0)))
+ offset = -cfa_store.offset;
+ else if (cfa_temp.reg == (unsigned) REGNO (XEXP (dest, 0)))
+ offset = -cfa_temp.offset;
+ else
abort ();
- offset = -cfa_store.offset;
+ break;
+
+ /* Rule 14 */
+ case POST_INC:
+ if (cfa_temp.reg != (unsigned) REGNO (XEXP (XEXP (dest, 0), 0)))
+ abort ();
+ offset = -cfa_temp.offset;
+ cfa_temp.offset -= GET_MODE_SIZE (GET_MODE (dest));
break;
default:
on the ARM. */
def_cfa_1 (label, &cfa);
- dwarf2out_reg_save (label, STACK_POINTER_REGNUM, offset);
+ queue_reg_save (label, stack_pointer_rtx, offset);
break;
}
else
}
def_cfa_1 (label, &cfa);
- dwarf2out_reg_save (label, REGNO (src), offset);
+ queue_reg_save (label, src, offset);
break;
default:
if (insn == NULL_RTX)
{
+ /* Flush any queued register saves. */
+ flush_queued_reg_saves ();
+
/* Set up state for generating call frame debug info. */
lookup_cfa (&cfa);
if (cfa.reg != (unsigned long) DWARF_FRAME_REGNUM (STACK_POINTER_REGNUM))
abort ();
cfa.reg = STACK_POINTER_REGNUM;
cfa_store = cfa;
- cfa_temp_reg = -1;
- cfa_temp_value = 0;
+ cfa_temp.reg = -1;
+ cfa_temp.offset = 0;
return;
}
+ if (GET_CODE (insn) != INSN || clobbers_queued_reg_save (insn))
+ flush_queued_reg_saves ();
+
if (! RTX_FRAME_RELATED_P (insn))
{
- dwarf2out_stack_adjust (insn);
+ if (!ACCUMULATE_OUTGOING_ARGS)
+ dwarf2out_stack_adjust (insn);
return;
}
dwarf2out_frame_debug_expr (insn, label);
}
-/* Return the size of an unsigned LEB128 quantity. */
-
-static inline unsigned long
-size_of_uleb128 (value)
- register unsigned long value;
-{
- register unsigned long size = 0;
- register unsigned byte;
-
- do
- {
- byte = (value & 0x7f);
- value >>= 7;
- size += 1;
- }
- while (value != 0);
-
- return size;
-}
-
-/* Return the size of a signed LEB128 quantity. */
-
-static inline unsigned long
-size_of_sleb128 (value)
- register long value;
-{
- register unsigned long size = 0;
- register unsigned byte;
-
- do
- {
- byte = (value & 0x7f);
- value >>= 7;
- size += 1;
- }
- while (!(((value == 0) && ((byte & 0x40) == 0))
- || ((value == -1) && ((byte & 0x40) != 0))));
-
- return size;
-}
-
-/* Output an unsigned LEB128 quantity. */
-
-static void
-output_uleb128 (value)
- register unsigned long value;
-{
- unsigned long save_value = value;
-
- fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP);
- do
- {
- register unsigned byte = (value & 0x7f);
- value >>= 7;
- if (value != 0)
- /* More bytes to follow. */
- byte |= 0x80;
-
- fprintf (asm_out_file, "0x%x", byte);
- if (value != 0)
- fprintf (asm_out_file, ",");
- }
- while (value != 0);
-
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s ULEB128 0x%lx", ASM_COMMENT_START, save_value);
-}
-
-/* Output an signed LEB128 quantity. */
-
-static void
-output_sleb128 (value)
- register long value;
-{
- register int more;
- register unsigned byte;
- long save_value = value;
-
- fprintf (asm_out_file, "\t%s\t", ASM_BYTE_OP);
- do
- {
- byte = (value & 0x7f);
- /* arithmetic shift */
- value >>= 7;
- more = !((((value == 0) && ((byte & 0x40) == 0))
- || ((value == -1) && ((byte & 0x40) != 0))));
- if (more)
- byte |= 0x80;
-
- fprintf (asm_out_file, "0x%x", byte);
- if (more)
- fprintf (asm_out_file, ",");
- }
-
- while (more);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s SLEB128 %ld", ASM_COMMENT_START, save_value);
-}
-
/* Output a Call Frame Information opcode and its operand(s). */
static void
-output_cfi (cfi, fde)
+output_cfi (cfi, fde, for_eh)
register dw_cfi_ref cfi;
register dw_fde_ref fde;
+ int for_eh;
{
if (cfi->dw_cfi_opc == DW_CFA_advance_loc)
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file,
- cfi->dw_cfi_opc
- | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f));
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_CFA_advance_loc 0x%lx",
- ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_offset);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, (cfi->dw_cfi_opc
+ | (cfi->dw_cfi_oprnd1.dw_cfi_offset & 0x3f)),
+ "DW_CFA_advance_loc 0x%lx",
+ cfi->dw_cfi_oprnd1.dw_cfi_offset);
}
-
else if (cfi->dw_cfi_opc == DW_CFA_offset)
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file,
- cfi->dw_cfi_opc
- | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f));
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_CFA_offset, column 0x%lx",
- ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num);
-
- fputc ('\n', asm_out_file);
- output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, (cfi->dw_cfi_opc
+ | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)),
+ "DW_CFA_offset, column 0x%lx",
+ cfi->dw_cfi_oprnd1.dw_cfi_reg_num);
+ dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset, NULL);
}
else if (cfi->dw_cfi_opc == DW_CFA_restore)
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file,
- cfi->dw_cfi_opc
- | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f));
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_CFA_restore, column 0x%lx",
- ASM_COMMENT_START, cfi->dw_cfi_oprnd1.dw_cfi_reg_num);
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, (cfi->dw_cfi_opc
+ | (cfi->dw_cfi_oprnd1.dw_cfi_reg_num & 0x3f)),
+ "DW_CFA_restore, column 0x%lx",
+ cfi->dw_cfi_oprnd1.dw_cfi_reg_num);
}
else
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, cfi->dw_cfi_opc);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START,
- dwarf_cfi_name (cfi->dw_cfi_opc));
+ dw2_asm_output_data (1, cfi->dw_cfi_opc,
+ "%s", dwarf_cfi_name (cfi->dw_cfi_opc));
- fputc ('\n', asm_out_file);
switch (cfi->dw_cfi_opc)
{
case DW_CFA_set_loc:
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, cfi->dw_cfi_oprnd1.dw_cfi_addr);
- fputc ('\n', asm_out_file);
+ if (for_eh)
+ dw2_asm_output_encoded_addr_rtx (
+ ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/1, /*global=*/0),
+ gen_rtx_SYMBOL_REF (Pmode, cfi->dw_cfi_oprnd1.dw_cfi_addr),
+ NULL);
+ else
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE,
+ cfi->dw_cfi_oprnd1.dw_cfi_addr, NULL);
break;
case DW_CFA_advance_loc1:
- ASM_OUTPUT_DWARF_DELTA1 (asm_out_file,
- cfi->dw_cfi_oprnd1.dw_cfi_addr,
- fde->dw_fde_current_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_delta (1, cfi->dw_cfi_oprnd1.dw_cfi_addr,
+ fde->dw_fde_current_label, NULL);
fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr;
break;
case DW_CFA_advance_loc2:
- ASM_OUTPUT_DWARF_DELTA2 (asm_out_file,
- cfi->dw_cfi_oprnd1.dw_cfi_addr,
- fde->dw_fde_current_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_delta (2, cfi->dw_cfi_oprnd1.dw_cfi_addr,
+ fde->dw_fde_current_label, NULL);
fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr;
break;
case DW_CFA_advance_loc4:
- ASM_OUTPUT_DWARF_DELTA4 (asm_out_file,
- cfi->dw_cfi_oprnd1.dw_cfi_addr,
- fde->dw_fde_current_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_delta (4, cfi->dw_cfi_oprnd1.dw_cfi_addr,
+ fde->dw_fde_current_label, NULL);
fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr;
break;
-#ifdef MIPS_DEBUGGING_INFO
case DW_CFA_MIPS_advance_loc8:
- /* TODO: not currently implemented. */
- abort ();
+ dw2_asm_output_delta (8, cfi->dw_cfi_oprnd1.dw_cfi_addr,
+ fde->dw_fde_current_label, NULL);
+ fde->dw_fde_current_label = cfi->dw_cfi_oprnd1.dw_cfi_addr;
break;
-#endif
case DW_CFA_offset_extended:
case DW_CFA_GNU_negative_offset_extended:
case DW_CFA_def_cfa:
- output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num);
- fputc ('\n', asm_out_file);
- output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, NULL);
+ dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_offset, NULL);
break;
case DW_CFA_restore_extended:
case DW_CFA_undefined:
- output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num);
- fputc ('\n', asm_out_file);
- break;
case DW_CFA_same_value:
case DW_CFA_def_cfa_register:
- output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, NULL);
break;
case DW_CFA_register:
- output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num);
- fputc ('\n', asm_out_file);
- output_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_reg_num, NULL);
+ dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd2.dw_cfi_reg_num, NULL);
break;
case DW_CFA_def_cfa_offset:
- output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset);
- fputc ('\n', asm_out_file);
+ case DW_CFA_GNU_args_size:
+ dw2_asm_output_data_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset, NULL);
break;
case DW_CFA_GNU_window_save:
break;
- case DW_CFA_GNU_args_size:
- output_uleb128 (cfi->dw_cfi_oprnd1.dw_cfi_offset);
- fputc ('\n', asm_out_file);
- break;
case DW_CFA_def_cfa_expression:
output_cfa_loc (cfi);
break;
output_call_frame_info (for_eh)
int for_eh;
{
- register unsigned long i;
+ register unsigned int i;
register dw_fde_ref fde;
register dw_cfi_ref cfi;
char l1[20], l2[20];
-#ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL
- char ld[20];
-#endif
-
- /* Do we want to include a pointer to the exception table? */
- int eh_ptr = for_eh && exception_table_p ();
+ int any_lsda_needed = 0;
+ char augmentation[6];
+ int augmentation_size;
+ int fde_encoding = DW_EH_PE_absptr;
+ int per_encoding = DW_EH_PE_absptr;
+ int lsda_encoding = DW_EH_PE_absptr;
/* If we don't have any functions we'll want to unwind out of, don't
emit any EH unwind information. */
if (for_eh)
{
+ int any_eh_needed = 0;
for (i = 0; i < fde_table_in_use; ++i)
- if (! fde_table[i].nothrow)
- goto found;
- return;
- found:;
- }
+ if (fde_table[i].uses_eh_lsda)
+ any_eh_needed = any_lsda_needed = 1;
+ else if (! fde_table[i].nothrow)
+ any_eh_needed = 1;
- fputc ('\n', asm_out_file);
+ if (! any_eh_needed)
+ return;
+ }
/* We're going to be generating comments, so turn on app. */
if (flag_debug_asm)
tree label = get_file_function_name ('F');
force_data_section ();
- ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (DWARF2_ADDR_SIZE));
+ ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE));
ASM_GLOBALIZE_LABEL (asm_out_file, IDENTIFIER_POINTER (label));
ASM_OUTPUT_LABEL (asm_out_file, IDENTIFIER_POINTER (label));
#endif
assemble_label ("__FRAME_BEGIN__");
}
else
- ASM_OUTPUT_SECTION (asm_out_file, FRAME_SECTION);
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_FRAME_SECTION);
/* Output the CIE. */
ASM_GENERATE_INTERNAL_LABEL (l1, CIE_AFTER_SIZE_LABEL, for_eh);
ASM_GENERATE_INTERNAL_LABEL (l2, CIE_END_LABEL, for_eh);
-#ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL
- ASM_GENERATE_INTERNAL_LABEL (ld, CIE_LENGTH_LABEL, for_eh);
- if (for_eh)
- ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld);
- else
- ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld);
-#else
- if (for_eh)
- ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1);
- else
- ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1);
-#endif
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Length of Common Information Entry",
- ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_delta (for_eh ? 4 : DWARF_OFFSET_SIZE, l2, l1,
+ "Length of Common Information Entry");
ASM_OUTPUT_LABEL (asm_out_file, l1);
- if (for_eh)
- /* Now that the CIE pointer is PC-relative for EH,
- use 0 to identify the CIE. */
- ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0);
- else
- ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID);
+ /* Now that the CIE pointer is PC-relative for EH,
+ use 0 to identify the CIE. */
+ dw2_asm_output_data ((for_eh ? 4 : DWARF_OFFSET_SIZE),
+ (for_eh ? 0 : DW_CIE_ID),
+ "CIE Identifier Tag");
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s CIE Identifier Tag", ASM_COMMENT_START);
+ dw2_asm_output_data (1, DW_CIE_VERSION, "CIE Version");
- fputc ('\n', asm_out_file);
- if (! for_eh && DWARF_OFFSET_SIZE == 8)
+ augmentation[0] = 0;
+ augmentation_size = 0;
+ if (for_eh)
{
- ASM_OUTPUT_DWARF_DATA4 (asm_out_file, DW_CIE_ID);
- fputc ('\n', asm_out_file);
- }
+ char *p;
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_CIE_VERSION);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s CIE Version", ASM_COMMENT_START);
+ /* Augmentation:
+ z Indicates that a uleb128 is present to size the
+ augmentation section.
+ L Indicates the encoding (and thus presence) of
+ an LSDA pointer in the FDE augmentation.
+ R Indicates a non-default pointer encoding for
+ FDE code pointers.
+ P Indicates the presence of an encoding + language
+ personality routine in the CIE augmentation. */
- fputc ('\n', asm_out_file);
- if (eh_ptr)
- {
- /* The CIE contains a pointer to the exception region info for the
- frame. Make the augmentation string three bytes (including the
- trailing null) so the pointer is 4-byte aligned. The Solaris ld
- can't handle unaligned relocs. */
- if (flag_debug_asm)
+ fde_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/1, /*global=*/0);
+ per_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/2, /*global=*/1);
+ lsda_encoding = ASM_PREFERRED_EH_DATA_FORMAT (/*code=*/0, /*global=*/0);
+
+ p = augmentation + 1;
+ if (eh_personality_libfunc)
{
- ASM_OUTPUT_DWARF_STRING (asm_out_file, "eh");
- fprintf (asm_out_file, "\t%s CIE Augmentation", ASM_COMMENT_START);
+ *p++ = 'P';
+ augmentation_size += 1 + size_of_encoded_value (per_encoding);
}
- else
+ if (any_lsda_needed)
{
- ASM_OUTPUT_ASCII (asm_out_file, "eh", 3);
+ *p++ = 'L';
+ augmentation_size += 1;
+ }
+ if (fde_encoding != DW_EH_PE_absptr)
+ {
+ *p++ = 'R';
+ augmentation_size += 1;
+ }
+ if (p > augmentation + 1)
+ {
+ augmentation[0] = 'z';
+ *p = '\0';
+ }
+
+ /* Ug. Some platforms can't do unaligned dynamic relocations at all. */
+ if (eh_personality_libfunc && per_encoding == DW_EH_PE_aligned)
+ {
+ int offset = ( 4 /* Length */
+ + 4 /* CIE Id */
+ + 1 /* CIE version */
+ + strlen (augmentation) + 1 /* Augmentation */
+ + size_of_uleb128 (1) /* Code alignment */
+ + size_of_sleb128 (DWARF_CIE_DATA_ALIGNMENT)
+ + 1 /* RA column */
+ + 1 /* Augmentation size */
+ + 1 /* Personality encoding */ );
+ int pad = -offset & (PTR_SIZE - 1);
+
+ augmentation_size += pad;
+
+ /* Augmentations should be small, so there's scarce need to
+ iterate for a solution. Die if we exceed one uleb128 byte. */
+ if (size_of_uleb128 (augmentation_size) != 1)
+ abort ();
}
- fputc ('\n', asm_out_file);
-
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, "__EXCEPTION_TABLE__");
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s pointer to exception region info",
- ASM_COMMENT_START);
- }
- else
- {
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s CIE Augmentation (none)",
- ASM_COMMENT_START);
}
+ dw2_asm_output_nstring (augmentation, -1, "CIE Augmentation");
- fputc ('\n', asm_out_file);
- output_uleb128 (1);
- if (flag_debug_asm)
- fprintf (asm_out_file, " (CIE Code Alignment Factor)");
+ dw2_asm_output_data_uleb128 (1, "CIE Code Alignment Factor");
- fputc ('\n', asm_out_file);
- output_sleb128 (DWARF_CIE_DATA_ALIGNMENT);
- if (flag_debug_asm)
- fprintf (asm_out_file, " (CIE Data Alignment Factor)");
+ dw2_asm_output_data_sleb128 (DWARF_CIE_DATA_ALIGNMENT,
+ "CIE Data Alignment Factor");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_FRAME_RETURN_COLUMN);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s CIE RA Column", ASM_COMMENT_START);
+ dw2_asm_output_data (1, DWARF_FRAME_RETURN_COLUMN, "CIE RA Column");
- fputc ('\n', asm_out_file);
+ if (augmentation[0])
+ {
+ dw2_asm_output_data_uleb128 (augmentation_size, "Augmentation size");
+ if (eh_personality_libfunc)
+ {
+ dw2_asm_output_data (1, per_encoding, "Personality (%s)",
+ eh_data_format_name (per_encoding));
+ dw2_asm_output_encoded_addr_rtx (per_encoding,
+ eh_personality_libfunc, NULL);
+ }
+ if (any_lsda_needed)
+ dw2_asm_output_data (1, lsda_encoding, "LSDA Encoding (%s)",
+ eh_data_format_name (lsda_encoding));
+ if (fde_encoding != DW_EH_PE_absptr)
+ dw2_asm_output_data (1, fde_encoding, "FDE Encoding (%s)",
+ eh_data_format_name (fde_encoding));
+ }
for (cfi = cie_cfi_head; cfi != NULL; cfi = cfi->dw_cfi_next)
- output_cfi (cfi, NULL);
+ output_cfi (cfi, NULL, for_eh);
/* Pad the CIE out to an address sized boundary. */
- ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (DWARF2_ADDR_SIZE));
+ ASM_OUTPUT_ALIGN (asm_out_file,
+ floor_log2 (for_eh ? PTR_SIZE : DWARF2_ADDR_SIZE));
ASM_OUTPUT_LABEL (asm_out_file, l2);
-#ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL
- ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s CIE Length Symbol", ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
-#endif
/* Loop through all of the FDE's. */
for (i = 0; i < fde_table_in_use; ++i)
{
fde = &fde_table[i];
- /* Don't emit EH unwind info for leaf functions. */
- if (for_eh && fde->nothrow)
+ /* Don't emit EH unwind info for leaf functions that don't need it. */
+ if (for_eh && fde->nothrow && ! fde->uses_eh_lsda)
continue;
+ ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, FDE_LABEL, for_eh + i * 2);
ASM_GENERATE_INTERNAL_LABEL (l1, FDE_AFTER_SIZE_LABEL, for_eh + i * 2);
ASM_GENERATE_INTERNAL_LABEL (l2, FDE_END_LABEL, for_eh + i * 2);
-#ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL
- ASM_GENERATE_INTERNAL_LABEL (ld, FDE_LENGTH_LABEL, for_eh + i * 2);
- if (for_eh)
- ASM_OUTPUT_DWARF_OFFSET4 (asm_out_file, ld);
- else
- ASM_OUTPUT_DWARF_OFFSET (asm_out_file, ld);
-#else
- if (for_eh)
- ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l2, l1);
- else
- ASM_OUTPUT_DWARF_DELTA (asm_out_file, l2, l1);
-#endif
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s FDE Length", ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_delta (for_eh ? 4 : DWARF_OFFSET_SIZE, l2, l1,
+ "FDE Length");
ASM_OUTPUT_LABEL (asm_out_file, l1);
/* ??? This always emits a 4 byte offset when for_eh is true, but it
If the for_eh case is changed, then the struct in frame.c has
to be adjusted appropriately. */
if (for_eh)
- ASM_OUTPUT_DWARF_DELTA4 (asm_out_file, l1, "__FRAME_BEGIN__");
+ dw2_asm_output_delta (4, l1, "__FRAME_BEGIN__", "FDE CIE offset");
else
- ASM_OUTPUT_DWARF_OFFSET (asm_out_file, stripattributes (FRAME_SECTION));
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s FDE CIE offset", ASM_COMMENT_START);
+ dw2_asm_output_offset (DWARF_OFFSET_SIZE,
+ stripattributes (DEBUG_FRAME_SECTION),
+ "FDE CIE offset");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, fde->dw_fde_begin);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s FDE initial location", ASM_COMMENT_START);
+ if (for_eh)
+ {
+ dw2_asm_output_encoded_addr_rtx (fde_encoding,
+ gen_rtx_SYMBOL_REF (Pmode, fde->dw_fde_begin),
+ "FDE initial location");
+ dw2_asm_output_delta (size_of_encoded_value (fde_encoding),
+ fde->dw_fde_end, fde->dw_fde_begin,
+ "FDE address range");
+ }
+ else
+ {
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, fde->dw_fde_begin,
+ "FDE initial location");
+ dw2_asm_output_delta (DWARF2_ADDR_SIZE,
+ fde->dw_fde_end, fde->dw_fde_begin,
+ "FDE address range");
+ }
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file,
- fde->dw_fde_end, fde->dw_fde_begin);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s FDE address range", ASM_COMMENT_START);
+ if (augmentation[0])
+ {
+ if (any_lsda_needed)
+ {
+ int size = size_of_encoded_value (lsda_encoding);
- fputc ('\n', asm_out_file);
+ if (lsda_encoding == DW_EH_PE_aligned)
+ {
+ int offset = ( 4 /* Length */
+ + 4 /* CIE offset */
+ + 2 * size_of_encoded_value (fde_encoding)
+ + 1 /* Augmentation size */ );
+ int pad = -offset & (PTR_SIZE - 1);
+
+ size += pad;
+ if (size_of_uleb128 (size) != 1)
+ abort ();
+ }
+
+ dw2_asm_output_data_uleb128 (size, "Augmentation size");
+
+ if (fde->uses_eh_lsda)
+ {
+ ASM_GENERATE_INTERNAL_LABEL (l1, "LLSDA",
+ fde->funcdef_number);
+ dw2_asm_output_encoded_addr_rtx (
+ lsda_encoding, gen_rtx_SYMBOL_REF (Pmode, l1),
+ "Language Specific Data Area");
+ }
+ else
+ {
+ if (lsda_encoding == DW_EH_PE_aligned)
+ ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (PTR_SIZE));
+ dw2_asm_output_data (size_of_encoded_value (lsda_encoding),
+ 0, "Language Specific Data Area (none)");
+ }
+ }
+ else
+ dw2_asm_output_data_uleb128 (0, "Augmentation size");
+ }
/* Loop through the Call Frame Instructions associated with
this FDE. */
fde->dw_fde_current_label = fde->dw_fde_begin;
for (cfi = fde->dw_fde_cfi; cfi != NULL; cfi = cfi->dw_cfi_next)
- output_cfi (cfi, fde);
+ output_cfi (cfi, fde, for_eh);
/* Pad the FDE out to an address sized boundary. */
- ASM_OUTPUT_ALIGN (asm_out_file, floor_log2 (DWARF2_ADDR_SIZE));
+ ASM_OUTPUT_ALIGN (asm_out_file,
+ floor_log2 ((for_eh ? PTR_SIZE : DWARF2_ADDR_SIZE)));
ASM_OUTPUT_LABEL (asm_out_file, l2);
-#ifdef ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL
- ASM_OUTPUT_DEFINE_LABEL_DIFFERENCE_SYMBOL (asm_out_file, ld, l2, l1);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s FDE Length Symbol", ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
-#endif
}
+
#ifndef EH_FRAME_SECTION
if (for_eh)
- {
- /* Emit terminating zero for table. */
- ASM_OUTPUT_DWARF_DATA4 (asm_out_file, 0);
- fputc ('\n', asm_out_file);
- }
+ dw2_asm_output_data (4, 0, "End of Table");
#endif
#ifdef MIPS_DEBUGGING_INFO
/* Work around Irix 6 assembler bug whereby labels at the end of a section
the prologue. */
void
-dwarf2out_begin_prologue ()
+dwarf2out_begin_prologue (line, file)
+ unsigned int line ATTRIBUTE_UNUSED;
+ const char *file ATTRIBUTE_UNUSED;
{
char label[MAX_ARTIFICIAL_LABEL_BYTES];
register dw_fde_ref fde;
+ current_function_func_begin_label = 0;
+
+#ifdef IA64_UNWIND_INFO
+ /* ??? current_function_func_begin_label is also used by except.c
+ for call-site information. We must emit this label if it might
+ be used. */
+ if ((! flag_exceptions || USING_SJLJ_EXCEPTIONS)
+ && ! dwarf2out_do_frame ())
+ return;
+#else
+ if (! dwarf2out_do_frame ())
+ return;
+#endif
+
++current_funcdef_number;
function_section (current_function_decl);
ASM_GENERATE_INTERNAL_LABEL (label, FUNC_BEGIN_LABEL,
current_funcdef_number);
- ASM_OUTPUT_LABEL (asm_out_file, label);
+ ASM_OUTPUT_DEBUG_LABEL (asm_out_file, FUNC_BEGIN_LABEL,
+ current_funcdef_number);
current_function_func_begin_label = get_identifier (label);
+#ifdef IA64_UNWIND_INFO
+ /* We can elide the fde allocation if we're not emitting debug info. */
+ if (! dwarf2out_do_frame ())
+ return;
+#endif
+
/* Expand the fde table if necessary. */
if (fde_table_in_use == fde_table_allocated)
{
fde->dw_fde_current_label = NULL;
fde->dw_fde_end = NULL;
fde->dw_fde_cfi = NULL;
+ fde->funcdef_number = current_funcdef_number;
fde->nothrow = current_function_nothrow;
+ fde->uses_eh_lsda = cfun->uses_eh_lsda;
args_size = old_args_size = 0;
+
+ /* We only want to output line number information for the genuine
+ dwarf2 prologue case, not the eh frame case. */
+#ifdef DWARF2_DEBUGGING_INFO
+ if (file)
+ dwarf2out_source_line (line, file);
+#endif
}
/* Output a marker (i.e. a label) for the absolute end of the generated code
#ifdef MIPS_DEBUGGING_INFO
if (write_symbols == DWARF2_DEBUG)
output_call_frame_info (0);
- if (flag_unwind_tables || (flag_exceptions && ! exceptions_via_longjmp))
+ if (flag_unwind_tables || (flag_exceptions && ! USING_SJLJ_EXCEPTIONS))
output_call_frame_info (1);
#else
if (write_symbols == DWARF2_DEBUG
- || flag_unwind_tables || (flag_exceptions && ! exceptions_via_longjmp))
+ || flag_unwind_tables || (flag_exceptions && ! USING_SJLJ_EXCEPTIONS))
output_call_frame_info (1);
#endif
}
typedef struct dw_val_struct *dw_val_ref;
typedef struct die_struct *dw_die_ref;
typedef struct dw_loc_descr_struct *dw_loc_descr_ref;
+typedef struct dw_loc_list_struct *dw_loc_list_ref;
/* Each DIE may have a series of attribute/value pairs. Values
can take on several forms. The forms that are used in this
{
dw_val_class_addr,
dw_val_class_loc,
+ dw_val_class_loc_list,
dw_val_class_const,
dw_val_class_unsigned_const,
dw_val_class_long_long,
union
{
rtx val_addr;
+ dw_loc_list_ref val_loc_list;
dw_loc_descr_ref val_loc;
long int val_int;
long unsigned val_unsigned;
enum dwarf_location_atom dw_loc_opc;
dw_val_node dw_loc_oprnd1;
dw_val_node dw_loc_oprnd2;
+ int dw_loc_addr;
}
dw_loc_descr_node;
+/* Location lists are ranges + location descriptions for that range,
+ so you can track variables that are in different places over
+ their entire life. */
+typedef struct dw_loc_list_struct
+{
+ dw_loc_list_ref dw_loc_next;
+ const char *begin; /* Label for begin address of range */
+ const char *end; /* Label for end address of range */
+ char *ll_symbol; /* Label for beginning of location list. Only on head of list */
+ const char *section; /* Section this loclist is relative to */
+ dw_loc_descr_ref expr;
+} dw_loc_list_node;
+
static const char *dwarf_stack_op_name PARAMS ((unsigned));
static dw_loc_descr_ref new_loc_descr PARAMS ((enum dwarf_location_atom,
unsigned long,
return descr;
}
+
/* Add a location description term to a location description expression. */
static inline void
register unsigned long size = 0;
for (; loc != NULL; loc = loc->dw_loc_next)
- size += size_of_loc_descr (loc);
+ {
+ loc->dw_loc_addr = size;
+ size += size_of_loc_descr (loc);
+ }
return size;
}
{
#ifdef DWARF2_DEBUGGING_INFO
case DW_OP_addr:
- ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, val1->v.val_addr);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_addr_rtx (DWARF2_ADDR_SIZE, val1->v.val_addr, NULL);
break;
case DW_OP_const2u:
case DW_OP_const2s:
- ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (2, val1->v.val_int, NULL);
break;
case DW_OP_const4u:
case DW_OP_const4s:
- ASM_OUTPUT_DWARF_DATA4 (asm_out_file, val1->v.val_int);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (4, val1->v.val_int, NULL);
break;
case DW_OP_const8u:
case DW_OP_const8s:
- abort ();
- fputc ('\n', asm_out_file);
+ if (HOST_BITS_PER_LONG < 64)
+ abort ();
+ dw2_asm_output_data (8, val1->v.val_int, NULL);
break;
case DW_OP_skip:
case DW_OP_bra:
- ASM_OUTPUT_DWARF_DATA2 (asm_out_file, val1->v.val_int);
- fputc ('\n', asm_out_file);
+ {
+ int offset;
+
+ if (val1->val_class == dw_val_class_loc)
+ offset = val1->v.val_loc->dw_loc_addr - (loc->dw_loc_addr + 3);
+ else
+ abort ();
+
+ dw2_asm_output_data (2, offset, NULL);
+ }
break;
#else
case DW_OP_addr:
#endif
case DW_OP_const1u:
case DW_OP_const1s:
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, val1->v.val_int, NULL);
break;
case DW_OP_constu:
- output_uleb128 (val1->v.val_unsigned);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL);
break;
case DW_OP_consts:
- output_sleb128 (val1->v.val_int);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_sleb128 (val1->v.val_int, NULL);
break;
case DW_OP_pick:
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_int);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, val1->v.val_int, NULL);
break;
case DW_OP_plus_uconst:
- output_uleb128 (val1->v.val_unsigned);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL);
break;
case DW_OP_breg0:
case DW_OP_breg1:
case DW_OP_breg29:
case DW_OP_breg30:
case DW_OP_breg31:
- output_sleb128 (val1->v.val_int);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_sleb128 (val1->v.val_int, NULL);
break;
case DW_OP_regx:
- output_uleb128 (val1->v.val_unsigned);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL);
break;
case DW_OP_fbreg:
- output_sleb128 (val1->v.val_int);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_sleb128 (val1->v.val_int, NULL);
break;
case DW_OP_bregx:
- output_uleb128 (val1->v.val_unsigned);
- fputc ('\n', asm_out_file);
- output_sleb128 (val2->v.val_int);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL);
+ dw2_asm_output_data_sleb128 (val2->v.val_int, NULL);
break;
case DW_OP_piece:
- output_uleb128 (val1->v.val_unsigned);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (val1->v.val_unsigned, NULL);
break;
case DW_OP_deref_size:
case DW_OP_xderef_size:
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, val1->v.val_flag);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, val1->v.val_int, NULL);
break;
default:
/* Other codes have no operands. */
for (; loc != NULL; loc = loc->dw_loc_next)
{
/* Output the opcode. */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, loc->dw_loc_opc);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s %s", ASM_COMMENT_START,
- dwarf_stack_op_name (loc->dw_loc_opc));
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, loc->dw_loc_opc,
+ "%s", dwarf_stack_op_name (loc->dw_loc_opc));
/* Output the operand(s) (if any). */
output_loc_operands (loc);
/* Output the size of the block. */
loc = cfi->dw_cfi_oprnd1.dw_cfi_loc;
size = size_of_locs (loc);
- output_uleb128 (size);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (size, NULL);
/* Now output the operations themselves. */
output_loc_sequence (loc);
abort ();
if (cfa->base_offset)
- head = new_loc_descr (DW_OP_breg0 + cfa->reg, cfa->base_offset, 0);
- else
+ {
+ if (cfa->reg <= 31)
+ head = new_loc_descr (DW_OP_breg0 + cfa->reg, cfa->base_offset, 0);
+ else
+ head = new_loc_descr (DW_OP_bregx, cfa->reg, cfa->base_offset);
+ }
+ else if (cfa->reg <= 31)
head = new_loc_descr (DW_OP_reg0 + cfa->reg, 0, 0);
+ else
+ head = new_loc_descr (DW_OP_regx, cfa->reg, 0);
head->dw_loc_oprnd1.val_class = dw_val_class_const;
tmp = new_loc_descr (DW_OP_deref, 0, 0);
add_loc_descr (&head, tmp);
cfa->offset = ptr->dw_loc_oprnd1.v.val_unsigned;
break;
default:
- fatal ("DW_LOC_OP %s not implememnted yet.\n",
- dwarf_stack_op_name (ptr->dw_loc_opc));
+ internal_error ("DW_LOC_OP %s not implememnted\n",
+ dwarf_stack_op_name (ptr->dw_loc_opc));
}
}
}
/* And now, the support for symbolic debugging information. */
#ifdef DWARF2_DEBUGGING_INFO
+static void dwarf2out_init PARAMS ((const char *));
+static void dwarf2out_finish PARAMS ((const char *));
+static void dwarf2out_define PARAMS ((unsigned int, const char *));
+static void dwarf2out_undef PARAMS ((unsigned int, const char *));
+static void dwarf2out_start_source_file PARAMS ((unsigned, const char *));
+static void dwarf2out_end_source_file PARAMS ((unsigned));
+static void dwarf2out_begin_block PARAMS ((unsigned, unsigned));
+static void dwarf2out_end_block PARAMS ((unsigned, unsigned));
+static bool dwarf2out_ignore_block PARAMS ((tree));
+static void dwarf2out_global_decl PARAMS ((tree));
+static void dwarf2out_abstract_function PARAMS ((tree));
+
+/* The debug hooks structure. */
+
+struct gcc_debug_hooks dwarf2_debug_hooks =
+{
+ dwarf2out_init,
+ dwarf2out_finish,
+ dwarf2out_define,
+ dwarf2out_undef,
+ dwarf2out_start_source_file,
+ dwarf2out_end_source_file,
+ dwarf2out_begin_block,
+ dwarf2out_end_block,
+ dwarf2out_ignore_block,
+ dwarf2out_source_line,
+ dwarf2out_begin_prologue,
+ debug_nothing_int, /* end_prologue */
+ dwarf2out_end_epilogue,
+ debug_nothing_tree, /* begin_function */
+ debug_nothing_int, /* end_function */
+ dwarf2out_decl, /* function_decl */
+ dwarf2out_global_decl,
+ debug_nothing_tree, /* deferred_inline_function */
+ /* The DWARF 2 backend tries to reduce debugging bloat by not
+ emitting the abstract description of inline functions until
+ something tries to reference them. */
+ dwarf2out_abstract_function, /* outlining_inline_function */
+ debug_nothing_rtx /* label */
+};
+\f
/* NOTE: In the comments in this file, many references are made to
"Debugging Information Entries". This term is abbreviated as `DIE'
throughout the remainder of this file. */
dw_die_ref die_sib;
dw_offset die_offset;
unsigned long die_abbrev;
+ int die_mark;
}
die_node;
(DWARF_ROUND (2 * DWARF_OFFSET_SIZE + 4, DWARF2_ADDR_SIZE * 2) \
- (2 * DWARF_OFFSET_SIZE + 4))
-/* The default is to have gcc emit the line number tables. */
+/* Use assembler line directives if available. */
#ifndef DWARF2_ASM_LINE_DEBUG_INFO
+#ifdef HAVE_AS_DWARF2_DEBUG_LINE
+#define DWARF2_ASM_LINE_DEBUG_INFO 1
+#else
#define DWARF2_ASM_LINE_DEBUG_INFO 0
#endif
+#endif
/* Define the architecture-dependent minimum instruction length (in bytes).
In this implementation of DWARF, this field is used for information
/* A list of DIEs with a NULL parent waiting to be relocated. */
static limbo_die_node *limbo_die_list = 0;
-/* Pointer to an array of filenames referenced by this compilation unit. */
-static char **file_table;
-
-/* Total number of entries in the table (i.e. array) pointed to by
- `file_table'. This is the *total* and includes both used and unused
- slots. */
-static unsigned file_table_allocated;
-
-/* Number of entries in the file_table which are actually in use. */
-static unsigned file_table_in_use;
+/* Structure used by lookup_filename to manage sets of filenames. */
+struct file_table
+{
+ char **table;
+ unsigned allocated;
+ unsigned in_use;
+ unsigned last_lookup_index;
+};
/* Size (in elements) of increments by which we may expand the filename
table. */
#define FILE_TABLE_INCREMENT 64
+/* Filenames referenced by this compilation unit. */
+static struct file_table file_table;
+
/* Local pointer to the name of the main input file. Initialized in
dwarf2out_init. */
static const char *primary_filename;
arange_table. */
#define ARANGE_TABLE_INCREMENT 64
+/* Whether we have location lists that need outputting */
+static unsigned have_location_lists;
+
/* A pointer to the base of a list of incomplete types which might be
completed at some later time. */
static void add_AT_loc PARAMS ((dw_die_ref,
enum dwarf_attribute,
dw_loc_descr_ref));
+static void add_AT_loc_list PARAMS ((dw_die_ref,
+ enum dwarf_attribute,
+ dw_loc_list_ref));
static void add_AT_addr PARAMS ((dw_die_ref,
enum dwarf_attribute,
rtx));
static int is_type_die PARAMS ((dw_die_ref));
static int is_comdat_die PARAMS ((dw_die_ref));
static int is_symbol_die PARAMS ((dw_die_ref));
-static char *gen_internal_sym PARAMS ((void));
static void assign_symbol_names PARAMS ((dw_die_ref));
static void break_out_includes PARAMS ((dw_die_ref));
static void add_sibling_attributes PARAMS ((dw_die_ref));
static void build_abbrev_table PARAMS ((dw_die_ref));
+static void output_location_lists PARAMS ((dw_die_ref));
static unsigned long size_of_string PARAMS ((const char *));
static int constant_size PARAMS ((long unsigned));
static unsigned long size_of_die PARAMS ((dw_die_ref));
static void calc_die_sizes PARAMS ((dw_die_ref));
-static void clear_die_sizes PARAMS ((dw_die_ref));
-static unsigned long size_of_line_prolog PARAMS ((void));
+static void mark_dies PARAMS ((dw_die_ref));
+static void unmark_dies PARAMS ((dw_die_ref));
static unsigned long size_of_pubnames PARAMS ((void));
static unsigned long size_of_aranges PARAMS ((void));
static enum dwarf_form value_format PARAMS ((dw_attr_ref));
static void output_value_format PARAMS ((dw_attr_ref));
static void output_abbrev_section PARAMS ((void));
static void output_die_symbol PARAMS ((dw_die_ref));
-static void output_symbolic_ref PARAMS ((dw_die_ref));
static void output_die PARAMS ((dw_die_ref));
static void output_compilation_unit_header PARAMS ((void));
static void output_comp_unit PARAMS ((dw_die_ref));
static void add_arange PARAMS ((tree, dw_die_ref));
static void output_aranges PARAMS ((void));
static void output_line_info PARAMS ((void));
+static void output_file_names PARAMS ((void));
static dw_die_ref base_type_die PARAMS ((tree));
static tree root_type PARAMS ((tree));
static int is_base_type PARAMS ((tree));
static int type_is_enum PARAMS ((tree));
static unsigned int reg_number PARAMS ((rtx));
static dw_loc_descr_ref reg_loc_descriptor PARAMS ((rtx));
+static dw_loc_descr_ref int_loc_descriptor PARAMS ((HOST_WIDE_INT));
static dw_loc_descr_ref based_loc_descr PARAMS ((unsigned, long));
static int is_based_loc PARAMS ((rtx));
static dw_loc_descr_ref mem_loc_descriptor PARAMS ((rtx, enum machine_mode mode));
static dw_loc_descr_ref concat_loc_descriptor PARAMS ((rtx, rtx));
static dw_loc_descr_ref loc_descriptor PARAMS ((rtx));
+static dw_loc_descr_ref loc_descriptor_from_tree PARAMS ((tree, int));
static HOST_WIDE_INT ceiling PARAMS ((HOST_WIDE_INT, unsigned int));
static tree field_type PARAMS ((tree));
static unsigned int simple_type_align_in_bits PARAMS ((tree));
+static unsigned int simple_decl_align_in_bits PARAMS ((tree));
static unsigned HOST_WIDE_INT simple_type_size_in_bits PARAMS ((tree));
static HOST_WIDE_INT field_byte_offset PARAMS ((tree));
static void add_AT_location_description PARAMS ((dw_die_ref,
enum dwarf_attribute, rtx));
static void add_data_member_location_attribute PARAMS ((dw_die_ref, tree));
static void add_const_value_attribute PARAMS ((dw_die_ref, rtx));
+static rtx rtl_for_decl_location PARAMS ((tree));
static void add_location_or_const_value_attribute PARAMS ((dw_die_ref, tree));
+static void tree_add_const_value_attribute PARAMS ((dw_die_ref, tree));
static void add_name_attribute PARAMS ((dw_die_ref, const char *));
static void add_bound_info PARAMS ((dw_die_ref,
enum dwarf_attribute, tree));
static int is_redundant_typedef PARAMS ((tree));
static void gen_decl_die PARAMS ((tree, dw_die_ref));
static unsigned lookup_filename PARAMS ((const char *));
+static void init_file_table PARAMS ((void));
static void add_incomplete_type PARAMS ((tree));
static void retry_incomplete_types PARAMS ((void));
static void gen_type_die_for_member PARAMS ((tree, tree, dw_die_ref));
-static void gen_abstract_function PARAMS ((tree));
static rtx save_rtx PARAMS ((rtx));
static void splice_child_die PARAMS ((dw_die_ref, dw_die_ref));
+static int file_info_cmp PARAMS ((const void *, const void *));
+static dw_loc_list_ref new_loc_list PARAMS ((dw_loc_descr_ref,
+ const char *, const char *,
+ const char *, unsigned));
+static void add_loc_descr_to_loc_list PARAMS ((dw_loc_list_ref *,
+ dw_loc_descr_ref,
+ const char *, const char *, const char *));
+static void output_loc_list PARAMS ((dw_loc_list_ref));
+static char *gen_internal_sym PARAMS ((const char *));
/* Section names used to hold DWARF debugging information. */
#ifndef DEBUG_INFO_SECTION
#define DEBUG_INFO_SECTION ".debug_info"
#endif
-#ifndef ABBREV_SECTION
-#define ABBREV_SECTION ".debug_abbrev"
+#ifndef DEBUG_ABBREV_SECTION
+#define DEBUG_ABBREV_SECTION ".debug_abbrev"
#endif
-#ifndef ARANGES_SECTION
-#define ARANGES_SECTION ".debug_aranges"
+#ifndef DEBUG_ARANGES_SECTION
+#define DEBUG_ARANGES_SECTION ".debug_aranges"
#endif
-#ifndef DW_MACINFO_SECTION
-#define DW_MACINFO_SECTION ".debug_macinfo"
+#ifndef DEBUG_MACINFO_SECTION
+#define DEBUG_MACINFO_SECTION ".debug_macinfo"
#endif
#ifndef DEBUG_LINE_SECTION
#define DEBUG_LINE_SECTION ".debug_line"
#endif
-#ifndef LOC_SECTION
-#define LOC_SECTION ".debug_loc"
+#ifndef DEBUG_LOC_SECTION
+#define DEBUG_LOC_SECTION ".debug_loc"
#endif
-#ifndef PUBNAMES_SECTION
-#define PUBNAMES_SECTION ".debug_pubnames"
+#ifndef DEBUG_PUBNAMES_SECTION
+#define DEBUG_PUBNAMES_SECTION ".debug_pubnames"
#endif
-#ifndef STR_SECTION
-#define STR_SECTION ".debug_str"
+#ifndef DEBUG_STR_SECTION
+#define DEBUG_STR_SECTION ".debug_str"
#endif
/* Standard ELF section names for compiled code and data. */
the section names themselves. */
#ifndef TEXT_SECTION_LABEL
-#define TEXT_SECTION_LABEL "Ltext"
+#define TEXT_SECTION_LABEL "Ltext"
#endif
#ifndef DEBUG_LINE_SECTION_LABEL
-#define DEBUG_LINE_SECTION_LABEL "Ldebug_line"
+#define DEBUG_LINE_SECTION_LABEL "Ldebug_line"
#endif
#ifndef DEBUG_INFO_SECTION_LABEL
-#define DEBUG_INFO_SECTION_LABEL "Ldebug_info"
+#define DEBUG_INFO_SECTION_LABEL "Ldebug_info"
#endif
-#ifndef ABBREV_SECTION_LABEL
-#define ABBREV_SECTION_LABEL "Ldebug_abbrev"
+#ifndef DEBUG_ABBREV_SECTION_LABEL
+#define DEBUG_ABBREV_SECTION_LABEL "Ldebug_abbrev"
+#endif
+#ifndef DEBUG_LOC_SECTION_LABEL
+#define DEBUG_LOC_SECTION_LABEL "Ldebug_loc"
+#endif
+#ifndef DEBUG_MACINFO_SECTION_LABEL
+#define DEBUG_MACINFO_SECTION_LABEL "Ldebug_macinfo"
#endif
-
/* Definitions of defaults for formats and names of various special
(artificial) labels which may be generated within this file (when the -g
options is used and DWARF_DEBUGGING_INFO is in effect.
static char abbrev_section_label[MAX_ARTIFICIAL_LABEL_BYTES];
static char debug_info_section_label[MAX_ARTIFICIAL_LABEL_BYTES];
static char debug_line_section_label[MAX_ARTIFICIAL_LABEL_BYTES];
-
+static char macinfo_section_label[MAX_ARTIFICIAL_LABEL_BYTES];
+static char loc_section_label[MAX_ARTIFICIAL_LABEL_BYTES];
#ifndef TEXT_END_LABEL
#define TEXT_END_LABEL "Letext"
#endif
#ifndef BSS_END_LABEL
#define BSS_END_LABEL "Lebss"
#endif
-#ifndef INSN_LABEL_FMT
-#define INSN_LABEL_FMT "LI%u_"
-#endif
#ifndef BLOCK_BEGIN_LABEL
#define BLOCK_BEGIN_LABEL "LBB"
#endif
save_rtx (orig)
register rtx orig;
{
- if (ggc_p)
- VARRAY_PUSH_RTX (used_rtx_varray, orig);
- else
- {
- push_obstacks_nochange ();
- end_temporary_allocation ();
- orig = copy_rtx (orig);
- pop_obstacks ();
- }
+ VARRAY_PUSH_RTX (used_rtx_varray, orig);
return orig;
}
{
return ((GET_CODE (rtl) == REG && REGNO (rtl) >= FIRST_PSEUDO_REGISTER)
|| (GET_CODE (rtl) == SUBREG
- && REGNO (XEXP (rtl, 0)) >= FIRST_PSEUDO_REGISTER));
+ && REGNO (SUBREG_REG (rtl)) >= FIRST_PSEUDO_REGISTER));
}
/* Return a reference to a type, with its const and volatile qualifiers
abort ();
}
+static inline void
+add_AT_loc_list (die, attr_kind, loc_list)
+ register dw_die_ref die;
+ register enum dwarf_attribute attr_kind;
+ register dw_loc_list_ref loc_list;
+{
+ register dw_attr_ref attr = (dw_attr_ref) xmalloc (sizeof (dw_attr_node));
+
+ attr->dw_attr_next = NULL;
+ attr->dw_attr = attr_kind;
+ attr->dw_attr_val.val_class = dw_val_class_loc_list;
+ attr->dw_attr_val.v.val_loc_list = loc_list;
+ add_dwarf_attr (die, attr);
+ have_location_lists = 1;
+}
+
+static inline dw_loc_list_ref AT_loc_list PARAMS ((dw_attr_ref));
+
+static inline dw_loc_list_ref
+AT_loc_list (a)
+ register dw_attr_ref a;
+{
+ if (a && AT_class (a) == dw_val_class_loc_list)
+ return a->dw_attr_val.v.val_loc_list;
+
+ abort ();
+}
+
/* Add an address constant attribute value to a DIE. */
static inline void
free (a->dw_attr_val.v.val_str);
break;
+ case dw_val_class_float:
+ free (a->dw_attr_val.v.val_float.array);
+ break;
+
default:
break;
}
register enum dwarf_tag tag_value;
register dw_die_ref parent_die;
{
- register dw_die_ref die = (dw_die_ref) xmalloc (sizeof (die_node));
+ register dw_die_ref die = (dw_die_ref) xcalloc (1, sizeof (die_node));
die->die_tag = tag_value;
- die->die_abbrev = 0;
- die->die_offset = 0;
- die->die_child = NULL;
- die->die_parent = NULL;
- die->die_sib = NULL;
- die->die_attr = NULL;
- die->die_symbol = NULL;
if (parent_die != NULL)
add_child_die (parent_die, die);
= (dw_die_ref *) xrealloc (decl_die_table,
sizeof (dw_die_ref) * num_allocated);
- bzero ((char *) &decl_die_table[decl_die_table_allocated],
+ memset ((char *) &decl_die_table[decl_die_table_allocated], 0,
(num_allocated - decl_die_table_allocated) * sizeof (dw_die_ref));
decl_die_table_allocated = num_allocated;
}
case dw_val_class_loc:
fprintf (outfile, "location descriptor");
break;
+ case dw_val_class_loc_list:
+ fprintf (outfile, "location list -> label:%s", AT_loc_list (a)->ll_symbol);
+ break;
case dw_val_class_const:
fprintf (outfile, "%ld", AT_int (a));
break;
case dw_val_class_die_ref:
if (AT_ref (a) != NULL)
{
- if (AT_ref (a)->die_offset == 0)
+ if (AT_ref (a)->die_symbol)
fprintf (outfile, "die -> label: %s", AT_ref (a)->die_symbol);
else
fprintf (outfile, "die -> %lu", AT_ref (a)->die_offset);
{
line_info = &line_info_table[i];
fprintf (outfile, "%5d: ", i);
- fprintf (outfile, "%-20s", file_table[line_info->dw_file_num]);
+ fprintf (outfile, "%-20s", file_table.table[line_info->dw_file_num]);
fprintf (outfile, "%6ld", line_info->dw_line_num);
fprintf (outfile, "\n");
}
die_checksum (unit_die, &ctx);
md5_finish_ctx (&ctx, checksum);
- p = file_name_nondirectory (get_AT_string (unit_die, DW_AT_name));
+ p = lbasename (get_AT_string (unit_die, DW_AT_name));
name = (char *) alloca (strlen (p) + 64);
sprintf (name, "%s.", p);
{
if (is_type_die (c))
return 1;
- if (get_AT (c, DW_AT_declaration)
+ if (get_AT (c, DW_AT_declaration)
&& ! get_AT (c, DW_AT_specification))
return 1;
return 0;
}
static char *
-gen_internal_sym ()
+gen_internal_sym (prefix)
+ const char *prefix;
{
char buf[256];
static int label_num;
- ASM_GENERATE_INTERNAL_LABEL (buf, "LDIE", label_num++);
+ ASM_GENERATE_INTERNAL_LABEL (buf, prefix, label_num++);
return xstrdup (buf);
}
die->die_symbol = xstrdup (p);
}
else
- die->die_symbol = gen_internal_sym ();
+ die->die_symbol = gen_internal_sym ("LDIE");
}
for (c = die->die_child; c != NULL; c = c->die_sib)
#if 0
/* We can only use this in debugging, since the frontend doesn't check
- to make sure that we leave every include file we enter. */
+ to make sure that we leave every include file we enter. */
if (unit != NULL)
abort ();
#endif
add_sibling_attributes (c);
}
+/* Output all location lists for the DIE and it's children */
+static void
+output_location_lists (die)
+ register dw_die_ref die;
+{
+ dw_die_ref c;
+ dw_attr_ref d_attr;
+ for (d_attr = die->die_attr; d_attr; d_attr = d_attr->dw_attr_next)
+ {
+ if (AT_class (d_attr) == dw_val_class_loc_list)
+ {
+ output_loc_list (AT_loc_list (d_attr));
+ }
+ }
+ for (c = die->die_child; c != NULL; c = c->die_sib)
+ output_location_lists (c);
+
+}
/* The format of each DIE (and its attribute value pairs)
is encoded in an abbreviation table. This routine builds the
abbreviation table and assigns a unique abbreviation id for
register dw_die_ref die;
{
register unsigned long abbrev_id;
- register unsigned long n_alloc;
+ register unsigned int n_alloc;
register dw_die_ref c;
register dw_attr_ref d_attr, a_attr;
/* Scan the DIE references, and mark as external any that refer to
- DIEs from other CUs (i.e. those with cleared die_offset). */
+ DIEs from other CUs (i.e. those which are not marked). */
for (d_attr = die->die_attr; d_attr; d_attr = d_attr->dw_attr_next)
{
if (AT_class (d_attr) == dw_val_class_die_ref
- && AT_ref (d_attr)->die_offset == 0)
+ && AT_ref (d_attr)->die_mark == 0)
{
if (AT_ref (d_attr)->die_symbol == 0)
abort ();
= (dw_die_ref *) xrealloc (abbrev_die_table,
sizeof (dw_die_ref) * n_alloc);
- bzero ((char *) &abbrev_die_table[abbrev_die_table_allocated],
+ memset ((char *) &abbrev_die_table[abbrev_die_table_allocated], 0,
(n_alloc - abbrev_die_table_allocated) * sizeof (dw_die_ref));
abbrev_die_table_allocated = n_alloc;
}
size += lsize;
}
break;
+ case dw_val_class_loc_list:
+ size += DWARF_OFFSET_SIZE;
+ break;
case dw_val_class_const:
size += size_of_sleb128 (AT_int (a));
break;
size += constant_size (AT_unsigned (a));
break;
case dw_val_class_long_long:
- size += 1 + 8; /* block */
+ size += 1 + 2*HOST_BITS_PER_LONG/HOST_BITS_PER_CHAR; /* block */
break;
case dw_val_class_float:
size += 1 + a->dw_attr_val.v.val_float.length * 4; /* block */
next_die_offset += 1;
}
-/* Clear the offsets and sizes for a die and its children. We do this so
+/* Set the marks for a die and its children. We do this so
that we know whether or not a reference needs to use FORM_ref_addr; only
- DIEs in the same CU will have non-zero offsets available. */
+ DIEs in the same CU will be marked. We used to clear out the offset
+ and use that as the flag, but ran into ordering problems. */
static void
-clear_die_sizes (die)
+mark_dies (die)
dw_die_ref die;
{
register dw_die_ref c;
- die->die_offset = 0;
+ die->die_mark = 1;
for (c = die->die_child; c; c = c->die_sib)
- clear_die_sizes (c);
+ mark_dies (c);
}
-/* Return the size of the line information prolog generated for the
- compilation unit. */
+/* Clear the marks for a die and its children. */
-static unsigned long
-size_of_line_prolog ()
+static void
+unmark_dies (die)
+ dw_die_ref die;
{
- register unsigned long size;
- register unsigned long ft_index;
-
- size = DWARF_LINE_PROLOG_HEADER_SIZE;
-
- /* Count the size of the table giving number of args for each
- standard opcode. */
- size += DWARF_LINE_OPCODE_BASE - 1;
-
- /* Include directory table is empty (at present). Count only the
- null byte used to terminate the table. */
- size += 1;
-
- for (ft_index = 1; ft_index < file_table_in_use; ++ft_index)
- {
- /* File name entry. */
- size += size_of_string (file_table[ft_index]);
-
- /* Include directory index. */
- size += size_of_uleb128 (0);
-
- /* Modification time. */
- size += size_of_uleb128 (0);
-
- /* File length in bytes. */
- size += size_of_uleb128 (0);
- }
-
- /* Count the file table terminator. */
- size += 1;
- return size;
+ register dw_die_ref c;
+ die->die_mark = 0;
+ for (c = die->die_child; c; c = c->die_sib)
+ unmark_dies (c);
}
/* Return the size of the .debug_pubnames table generated for the
{
case dw_val_class_addr:
return DW_FORM_addr;
+ case dw_val_class_loc_list:
+ /* FIXME: Could be DW_FORM_data8, with a > 32 bit size
+ .debug_loc section */
+ return DW_FORM_data4;
case dw_val_class_loc:
switch (constant_size (size_of_locs (AT_loc (a))))
{
dw_attr_ref a;
{
enum dwarf_form form = value_format (a);
-
- output_uleb128 (form);
- if (flag_debug_asm)
- fprintf (asm_out_file, " (%s)", dwarf_form_name (form));
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (form, "(%s)", dwarf_form_name (form));
}
/* Output the .debug_abbrev section which defines the DIE abbreviation
{
register dw_die_ref abbrev = abbrev_die_table[abbrev_id];
- output_uleb128 (abbrev_id);
- if (flag_debug_asm)
- fprintf (asm_out_file, " (abbrev code)");
-
- fputc ('\n', asm_out_file);
- output_uleb128 (abbrev->die_tag);
- if (flag_debug_asm)
- fprintf (asm_out_file, " (TAG: %s)",
- dwarf_tag_name (abbrev->die_tag));
-
- fputc ('\n', asm_out_file);
- fprintf (asm_out_file, "\t%s\t0x%x", ASM_BYTE_OP,
- abbrev->die_child != NULL ? DW_children_yes : DW_children_no);
+ dw2_asm_output_data_uleb128 (abbrev_id, "(abbrev code)");
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s %s",
- ASM_COMMENT_START,
- (abbrev->die_child != NULL
- ? "DW_children_yes" : "DW_children_no"));
+ dw2_asm_output_data_uleb128 (abbrev->die_tag, "(TAG: %s)",
+ dwarf_tag_name (abbrev->die_tag));
- fputc ('\n', asm_out_file);
+ if (abbrev->die_child != NULL)
+ dw2_asm_output_data (1, DW_children_yes, "DW_children_yes");
+ else
+ dw2_asm_output_data (1, DW_children_no, "DW_children_no");
for (a_attr = abbrev->die_attr; a_attr != NULL;
a_attr = a_attr->dw_attr_next)
{
- output_uleb128 (a_attr->dw_attr);
- if (flag_debug_asm)
- fprintf (asm_out_file, " (%s)",
- dwarf_attr_name (a_attr->dw_attr));
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (a_attr->dw_attr, "(%s)",
+ dwarf_attr_name (a_attr->dw_attr));
output_value_format (a_attr);
}
- fprintf (asm_out_file, "\t%s\t0,0\n", ASM_BYTE_OP);
+ dw2_asm_output_data (1, 0, NULL);
+ dw2_asm_output_data (1, 0, NULL);
}
/* Terminate the table. */
- fprintf (asm_out_file, "\t%s\t0\n", ASM_BYTE_OP);
+ dw2_asm_output_data (1, 0, NULL);
}
/* Output a symbol we can use to refer to this DIE from another CU. */
ASM_OUTPUT_LABEL (asm_out_file, sym);
}
-/* Output a symbolic (i.e. FORM_ref_addr) reference to TARGET_DIE. */
-
+/* Return a new location list, given the begin and end range, and the
+ expression. gensym tells us whether to generate a new internal
+ symbol for this location list node, which is done for the head of
+ the list only. */
+static inline dw_loc_list_ref
+new_loc_list (expr, begin, end, section, gensym)
+ register dw_loc_descr_ref expr;
+ register const char *begin;
+ register const char *end;
+ register const char *section;
+ register unsigned gensym;
+{
+ register dw_loc_list_ref retlist
+ = (dw_loc_list_ref) xcalloc (1, sizeof (dw_loc_list_node));
+ retlist->begin = begin;
+ retlist->end = end;
+ retlist->expr = expr;
+ retlist->section = section;
+ if (gensym)
+ retlist->ll_symbol = gen_internal_sym ("LLST");
+ return retlist;
+}
+
+/* Add a location description expression to a location list */
static inline void
-output_symbolic_ref (target_die)
- dw_die_ref target_die;
+add_loc_descr_to_loc_list (list_head, descr, begin, end, section)
+ register dw_loc_list_ref *list_head;
+ register dw_loc_descr_ref descr;
+ register const char *begin;
+ register const char *end;
+ register const char *section;
{
- char *sym = target_die->die_symbol;
+ register dw_loc_list_ref *d;
+
+ /* Find the end of the chain. */
+ for (d = list_head; (*d) != NULL; d = &(*d)->dw_loc_next)
+ ;
+ /* Add a new location list node to the list */
+ *d = new_loc_list (descr, begin, end, section, 0);
+}
- if (sym == 0)
- abort ();
- ASM_OUTPUT_DWARF_OFFSET (asm_out_file, sym);
-}
+/* Output the location list given to us */
+static void
+output_loc_list (list_head)
+ register dw_loc_list_ref list_head;
+{
+ register dw_loc_list_ref curr=list_head;
+ ASM_OUTPUT_LABEL (asm_out_file, list_head->ll_symbol);
+ if (strcmp (curr->section, ".text") == 0)
+ {
+ /* dw2_asm_output_data will mask off any extra bits in the ~0. */
+ dw2_asm_output_data (DWARF2_ADDR_SIZE, ~(unsigned HOST_WIDE_INT)0,
+ "Location list base address specifier fake entry");
+ dw2_asm_output_offset (DWARF2_ADDR_SIZE, curr->section,
+ "Location list base address specifier base");
+ }
+ for (curr = list_head; curr != NULL; curr=curr->dw_loc_next)
+ {
+ int size;
+ dw2_asm_output_delta (DWARF2_ADDR_SIZE, curr->begin, curr->section,
+ "Location list begin address (%s)",
+ list_head->ll_symbol);
+ dw2_asm_output_delta (DWARF2_ADDR_SIZE, curr->end, curr->section,
+ "Location list end address (%s)",
+ list_head->ll_symbol);
+ size = size_of_locs (curr->expr);
+
+ /* Output the block length for this list of location operations. */
+ dw2_asm_output_data (constant_size (size), size, "%s",
+ "Location expression size");
+
+ output_loc_sequence (curr->expr);
+ }
+ dw2_asm_output_data (DWARF_OFFSET_SIZE, 0,
+ "Location list terminator begin (%s)",
+ list_head->ll_symbol);
+ dw2_asm_output_data (DWARF_OFFSET_SIZE, 0,
+ "Location list terminator end (%s)",
+ list_head->ll_symbol);
+}
/* Output the DIE and its attributes. Called recursively to generate
the definitions of each child DIE. */
if (die->die_symbol)
output_die_symbol (die);
- output_uleb128 (die->die_abbrev);
- if (flag_debug_asm)
- fprintf (asm_out_file, " (DIE (0x%lx) %s)",
- die->die_offset, dwarf_tag_name (die->die_tag));
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data_uleb128 (die->die_abbrev, "(DIE (0x%lx) %s)",
+ die->die_offset, dwarf_tag_name (die->die_tag));
for (a = die->die_attr; a != NULL; a = a->dw_attr_next)
{
+ const char *name = dwarf_attr_name (a->dw_attr);
+
switch (AT_class (a))
{
case dw_val_class_addr:
- ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file, AT_addr (a));
+ dw2_asm_output_addr_rtx (DWARF2_ADDR_SIZE, AT_addr (a), "%s", name);
break;
case dw_val_class_loc:
size = size_of_locs (AT_loc (a));
/* Output the block length for this list of location operations. */
- switch (constant_size (size))
- {
- case 1:
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, size);
- break;
- case 2:
- ASM_OUTPUT_DWARF_DATA2 (asm_out_file, size);
- break;
- default:
- abort ();
- }
-
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s %s",
- ASM_COMMENT_START, dwarf_attr_name (a->dw_attr));
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (constant_size (size), size, "%s", name);
output_loc_sequence (AT_loc (a));
break;
/* ??? It would be slightly more efficient to use a scheme like is
used for unsigned constants below, but gdb 4.x does not sign
extend. Gdb 5.x does sign extend. */
- output_sleb128 (AT_int (a));
+ dw2_asm_output_data_sleb128 (AT_int (a), "%s", name);
break;
case dw_val_class_unsigned_const:
- switch (constant_size (AT_unsigned (a)))
- {
- case 1:
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, AT_unsigned (a));
- break;
- case 2:
- ASM_OUTPUT_DWARF_DATA2 (asm_out_file, AT_unsigned (a));
- break;
- case 4:
- ASM_OUTPUT_DWARF_DATA4 (asm_out_file, AT_unsigned (a));
- break;
- case 8:
- ASM_OUTPUT_DWARF_DATA8 (asm_out_file, AT_unsigned (a));
- break;
- default:
- abort ();
- }
+ dw2_asm_output_data (constant_size (AT_unsigned (a)),
+ AT_unsigned (a), "%s", name);
break;
case dw_val_class_long_long:
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 8);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s %s",
- ASM_COMMENT_START, dwarf_attr_name (a->dw_attr));
-
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_CONST_DOUBLE (asm_out_file,
- a->dw_attr_val.v.val_long_long.hi,
- a->dw_attr_val.v.val_long_long.low);
+ {
+ unsigned HOST_WIDE_INT first, second;
- if (flag_debug_asm)
- fprintf (asm_out_file,
- "\t%s long long constant", ASM_COMMENT_START);
+ dw2_asm_output_data (1, 2*HOST_BITS_PER_LONG/HOST_BITS_PER_CHAR,
+ "%s", name);
- fputc ('\n', asm_out_file);
+ if (WORDS_BIG_ENDIAN)
+ {
+ first = a->dw_attr_val.v.val_long_long.hi;
+ second = a->dw_attr_val.v.val_long_long.low;
+ }
+ else
+ {
+ first = a->dw_attr_val.v.val_long_long.low;
+ second = a->dw_attr_val.v.val_long_long.hi;
+ }
+ dw2_asm_output_data (HOST_BITS_PER_LONG/HOST_BITS_PER_CHAR,
+ first, "long long constant");
+ dw2_asm_output_data (HOST_BITS_PER_LONG/HOST_BITS_PER_CHAR,
+ second, NULL);
+ }
break;
case dw_val_class_float:
{
register unsigned int i;
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file,
- a->dw_attr_val.v.val_float.length * 4);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s %s",
- ASM_COMMENT_START, dwarf_attr_name (a->dw_attr));
- fputc ('\n', asm_out_file);
- for (i = 0; i < a->dw_attr_val.v.val_float.length; ++i)
- {
- ASM_OUTPUT_DWARF_DATA4 (asm_out_file,
- a->dw_attr_val.v.val_float.array[i]);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s fp constant word %u",
- ASM_COMMENT_START, i);
+ dw2_asm_output_data (1, a->dw_attr_val.v.val_float.length * 4,
+ "%s", name);
- fputc ('\n', asm_out_file);
- }
+ for (i = 0; i < a->dw_attr_val.v.val_float.length; ++i)
+ dw2_asm_output_data (4, a->dw_attr_val.v.val_float.array[i],
+ "fp constant word %u", i);
break;
}
case dw_val_class_flag:
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, AT_flag (a));
+ dw2_asm_output_data (1, AT_flag (a), "%s", name);
+ break;
+ case dw_val_class_loc_list:
+ {
+ char *sym = AT_loc_list (a)->ll_symbol;
+ if (sym == 0)
+ abort();
+ dw2_asm_output_delta (DWARF_OFFSET_SIZE, sym, loc_section_label, name);
+ }
break;
-
case dw_val_class_die_ref:
if (AT_ref_external (a))
- output_symbolic_ref (AT_ref (a));
+ {
+ char *sym = AT_ref (a)->die_symbol;
+ if (sym == 0)
+ abort ();
+ dw2_asm_output_offset (DWARF2_ADDR_SIZE, sym, "%s", name);
+ }
+ else if (AT_ref (a)->die_offset == 0)
+ abort ();
else
- ASM_OUTPUT_DWARF_DATA (asm_out_file, AT_ref (a)->die_offset);
+ dw2_asm_output_data (DWARF_OFFSET_SIZE, AT_ref (a)->die_offset,
+ "%s", name);
break;
case dw_val_class_fde_ref:
{
char l1[20];
- ASM_GENERATE_INTERNAL_LABEL
- (l1, FDE_AFTER_SIZE_LABEL, a->dw_attr_val.v.val_fde_index * 2);
- ASM_OUTPUT_DWARF_OFFSET (asm_out_file, l1);
- fprintf (asm_out_file, " - %d", DWARF_OFFSET_SIZE);
+ ASM_GENERATE_INTERNAL_LABEL (l1, FDE_LABEL,
+ a->dw_attr_val.v.val_fde_index * 2);
+ dw2_asm_output_offset (DWARF_OFFSET_SIZE, l1, "%s", name);
}
break;
case dw_val_class_lbl_id:
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, AT_lbl (a));
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, AT_lbl (a), "%s", name);
break;
case dw_val_class_lbl_offset:
- ASM_OUTPUT_DWARF_OFFSET (asm_out_file, AT_lbl (a));
+ dw2_asm_output_offset (DWARF_OFFSET_SIZE, AT_lbl (a), "%s", name);
break;
case dw_val_class_str:
- if (flag_debug_asm)
- ASM_OUTPUT_DWARF_STRING (asm_out_file, AT_string (a));
- else
- ASM_OUTPUT_ASCII (asm_out_file, AT_string (a),
- (int) strlen (AT_string (a)) + 1);
+ dw2_asm_output_nstring (AT_string (a), -1, "%s", name);
break;
default:
abort ();
}
-
- if (AT_class (a) != dw_val_class_loc
- && AT_class (a) != dw_val_class_long_long
- && AT_class (a) != dw_val_class_float)
- {
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s %s",
- ASM_COMMENT_START, dwarf_attr_name (a->dw_attr));
-
- fputc ('\n', asm_out_file);
- }
}
for (c = die->die_child; c != NULL; c = c->die_sib)
if (die->die_child != NULL)
{
/* Add null byte to terminate sibling list. */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s end of children of DIE 0x%lx",
- ASM_COMMENT_START, die->die_offset);
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, 0, "end of children of DIE 0x%lx",
+ die->die_offset);
}
}
static void
output_compilation_unit_header ()
{
- ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset - DWARF_OFFSET_SIZE);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Length of Compilation Unit Info.",
- ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DWARF version number", ASM_COMMENT_START);
+ dw2_asm_output_data (DWARF_OFFSET_SIZE, next_die_offset - DWARF_OFFSET_SIZE,
+ "Length of Compilation Unit Info");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_OFFSET (asm_out_file, abbrev_section_label);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Offset Into Abbrev. Section",
- ASM_COMMENT_START);
+ dw2_asm_output_data (2, DWARF_VERSION, "DWARF version number");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF2_ADDR_SIZE);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Pointer Size (in bytes)", ASM_COMMENT_START);
+ dw2_asm_output_offset (DWARF_OFFSET_SIZE, abbrev_section_label,
+ "Offset Into Abbrev. Section");
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DWARF2_ADDR_SIZE, "Pointer Size (in bytes)");
}
/* Output the compilation unit DIE and its children. */
output_comp_unit (die)
dw_die_ref die;
{
- char *secname;
+ const char *secname;
- if (die->die_child == 0)
- return;
+ /* Even if there are no children of this DIE, we must output the
+ information about the compilation unit. Otherwise, on an empty
+ translation unit, we will generate a present, but empty,
+ .debug_info section. IRIX 6.5 `nm' will then complain when
+ examining the file.
+
+ Mark all the DIEs in this CU so we know which get local refs. */
+ mark_dies (die);
+
+ build_abbrev_table (die);
/* Initialize the beginning DIE offset - and calculate sizes/offsets. */
next_die_offset = DWARF_COMPILE_UNIT_HEADER_SIZE;
calc_die_sizes (die);
- build_abbrev_table (die);
-
if (die->die_symbol)
{
- secname = (char *) alloca (strlen (die->die_symbol) + 24);
- sprintf (secname, ".gnu.linkonce.wi.%s", die->die_symbol);
+ char *tmp = (char *) alloca (strlen (die->die_symbol) + 24);
+ sprintf (tmp, ".gnu.linkonce.wi.%s", die->die_symbol);
+ secname = tmp;
die->die_symbol = NULL;
}
else
- secname = (char *) DEBUG_INFO_SECTION;
+ secname = (const char *) DEBUG_INFO_SECTION;
/* Output debugging information. */
- fputc ('\n', asm_out_file);
ASM_OUTPUT_SECTION (asm_out_file, secname);
output_compilation_unit_header ();
output_die (die);
- /* Leave the sizes on the main CU, since we do it last and we use the
- sizes in output_pubnames. */
+ /* Leave the marks on the main CU, so we can check them in
+ output_pubnames. */
if (die->die_symbol)
- clear_die_sizes (die);
+ unmark_dies (die);
}
/* The DWARF2 pubname for a nested thingy looks like "A::f". The output
register unsigned i;
register unsigned long pubnames_length = size_of_pubnames ();
- ASM_OUTPUT_DWARF_DATA (asm_out_file, pubnames_length);
-
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Length of Public Names Info.",
- ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION);
+ dw2_asm_output_data (DWARF_OFFSET_SIZE, pubnames_length,
+ "Length of Public Names Info");
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START);
+ dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_OFFSET (asm_out_file, debug_info_section_label);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.",
- ASM_COMMENT_START);
+ dw2_asm_output_offset (DWARF_OFFSET_SIZE, debug_info_section_label,
+ "Offset of Compilation Unit Info");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA (asm_out_file, next_die_offset);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Compilation Unit Length", ASM_COMMENT_START);
+ dw2_asm_output_data (DWARF_OFFSET_SIZE, next_die_offset,
+ "Compilation Unit Length");
- fputc ('\n', asm_out_file);
for (i = 0; i < pubname_table_in_use; ++i)
{
register pubname_ref pub = &pubname_table[i];
/* We shouldn't see pubnames for DIEs outside of the main CU. */
- if (pub->die->die_offset == 0)
+ if (pub->die->die_mark == 0)
abort ();
- ASM_OUTPUT_DWARF_DATA (asm_out_file, pub->die->die_offset);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DIE offset", ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
-
- if (flag_debug_asm)
- {
- ASM_OUTPUT_DWARF_STRING (asm_out_file, pub->name);
- fprintf (asm_out_file, "%s external name", ASM_COMMENT_START);
- }
- else
- {
- ASM_OUTPUT_ASCII (asm_out_file, pub->name,
- (int) strlen (pub->name) + 1);
- }
+ dw2_asm_output_data (DWARF_OFFSET_SIZE, pub->die->die_offset,
+ "DIE offset");
- fputc ('\n', asm_out_file);
+ dw2_asm_output_nstring (pub->name, -1, "external name");
}
- ASM_OUTPUT_DWARF_DATA (asm_out_file, 0);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (DWARF_OFFSET_SIZE, 0, NULL);
}
/* Add a new entry to .debug_aranges if appropriate. */
register unsigned i;
register unsigned long aranges_length = size_of_aranges ();
- ASM_OUTPUT_DWARF_DATA (asm_out_file, aranges_length);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Length of Address Ranges Info.",
- ASM_COMMENT_START);
+ dw2_asm_output_data (DWARF_OFFSET_SIZE, aranges_length,
+ "Length of Address Ranges Info");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START);
+ dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_OFFSET (asm_out_file, debug_info_section_label);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Offset of Compilation Unit Info.",
- ASM_COMMENT_START);
+ dw2_asm_output_offset (DWARF_OFFSET_SIZE, debug_info_section_label,
+ "Offset of Compilation Unit Info");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF2_ADDR_SIZE);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Size of Address", ASM_COMMENT_START);
+ dw2_asm_output_data (1, DWARF2_ADDR_SIZE, "Size of Address");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Size of Segment Descriptor",
- ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, 0, "Size of Segment Descriptor");
/* We need to align to twice the pointer size here. */
if (DWARF_ARANGES_PAD_SIZE)
{
- /* Pad using a 2 bytes word so that padding is correct
- for any pointer size. */
- ASM_OUTPUT_DWARF_DATA2 (asm_out_file, 0);
- for (i = 2; i < DWARF_ARANGES_PAD_SIZE; i += 2)
- fprintf (asm_out_file, ",0");
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Pad to %d byte boundary",
- ASM_COMMENT_START, 2 * DWARF2_ADDR_SIZE);
+ /* Pad using a 2 byte words so that padding is correct for any
+ pointer size. */
+ dw2_asm_output_data (2, 0, "Pad to %d byte boundary",
+ 2 * DWARF2_ADDR_SIZE);
+ for (i = 2; i < (unsigned) DWARF_ARANGES_PAD_SIZE; i += 2)
+ dw2_asm_output_data (2, 0, NULL);
}
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_section_label);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, text_end_label,
- text_section_label);
- if (flag_debug_asm)
- fprintf (asm_out_file, "%s Length", ASM_COMMENT_START);
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, text_section_label, "Address");
+ dw2_asm_output_delta (DWARF2_ADDR_SIZE, text_end_label,
+ text_section_label, "Length");
- fputc ('\n', asm_out_file);
for (i = 0; i < arange_table_in_use; ++i)
{
dw_die_ref die = arange_table[i];
/* We shouldn't see aranges for DIEs outside of the main CU. */
- if (die->die_offset == 0)
+ if (die->die_mark == 0)
abort ();
if (die->die_tag == DW_TAG_subprogram)
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, get_AT_low_pc (die));
+ {
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, get_AT_low_pc (die),
+ "Address");
+ dw2_asm_output_delta (DWARF2_ADDR_SIZE, get_AT_hi_pc (die),
+ get_AT_low_pc (die), "Length");
+ }
else
{
/* A static variable; extract the symbol from DW_AT_location.
if (loc->dw_loc_opc != DW_OP_addr)
abort ();
- ASM_OUTPUT_DWARF_ADDR_CONST (asm_out_file,
- loc->dw_loc_oprnd1.v.val_addr);
+ dw2_asm_output_addr_rtx (DWARF2_ADDR_SIZE,
+ loc->dw_loc_oprnd1.v.val_addr, "Address");
+ dw2_asm_output_data (DWARF2_ADDR_SIZE,
+ get_AT_unsigned (die, DW_AT_byte_size),
+ "Length");
}
+ }
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Address", ASM_COMMENT_START);
+ /* Output the terminator words. */
+ dw2_asm_output_data (DWARF2_ADDR_SIZE, 0, NULL);
+ dw2_asm_output_data (DWARF2_ADDR_SIZE, 0, NULL);
+}
- fputc ('\n', asm_out_file);
- if (die->die_tag == DW_TAG_subprogram)
- ASM_OUTPUT_DWARF_ADDR_DELTA (asm_out_file, get_AT_hi_pc (die),
- get_AT_low_pc (die));
- else
- ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file,
- get_AT_unsigned (die, DW_AT_byte_size));
- if (flag_debug_asm)
- fprintf (asm_out_file, "%s Length", ASM_COMMENT_START);
+/* Data structure containing information about input files. */
+struct file_info
+{
+ char *path; /* Complete file name. */
+ char *fname; /* File name part. */
+ int length; /* Length of entire string. */
+ int file_idx; /* Index in input file table. */
+ int dir_idx; /* Index in directory table. */
+};
+
+/* Data structure containing information about directories with source
+ files. */
+struct dir_info
+{
+ char *path; /* Path including directory name. */
+ int length; /* Path length. */
+ int prefix; /* Index of directory entry which is a prefix. */
+ int count; /* Number of files in this directory. */
+ int dir_idx; /* Index of directory used as base. */
+ int used; /* Used in the end? */
+};
+
+/* Callback function for file_info comparison. We sort by looking at
+ the directories in the path. */
+static int
+file_info_cmp (p1, p2)
+ const void *p1;
+ const void *p2;
+{
+ const struct file_info *s1 = p1;
+ const struct file_info *s2 = p2;
+ unsigned char *cp1;
+ unsigned char *cp2;
+
+ /* Take care of file names without directories. */
+ if (s1->path == s1->fname)
+ return -1;
+ else if (s2->path == s2->fname)
+ return 1;
- fputc ('\n', asm_out_file);
+ cp1 = (unsigned char *) s1->path;
+ cp2 = (unsigned char *) s2->path;
+
+ while (1)
+ {
+ ++cp1;
+ ++cp2;
+ /* Reached the end of the first path? */
+ if (cp1 == (unsigned char *) s1->fname)
+ /* It doesn't really matter in which order files from the
+ same directory are sorted in. Therefore don't test for
+ the second path reaching the end. */
+ return -1;
+ else if (cp2 == (unsigned char *) s2->fname)
+ return 1;
+
+ /* Character of current path component the same? */
+ if (*cp1 != *cp2)
+ return *cp1 - *cp2;
}
+}
- /* Output the terminator words. */
- ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_ADDR_DATA (asm_out_file, 0);
- fputc ('\n', asm_out_file);
+/* Output the directory table and the file name table. We try to minimize
+ the total amount of memory needed. A heuristic is used to avoid large
+ slowdowns with many input files. */
+static void
+output_file_names ()
+{
+ struct file_info *files;
+ struct dir_info *dirs;
+ int *saved;
+ int *savehere;
+ int *backmap;
+ int ndirs;
+ int idx_offset;
+ int i;
+ int idx;
+
+ /* Allocate the various arrays we need. */
+ files = (struct file_info *) alloca (file_table.in_use
+ * sizeof (struct file_info));
+ dirs = (struct dir_info *) alloca (file_table.in_use
+ * sizeof (struct dir_info));
+
+ /* Sort the file names. */
+ for (i = 1; i < (int) file_table.in_use; ++i)
+ {
+ char *f;
+
+ /* Skip all leading "./". */
+ f = file_table.table[i];
+ while (f[0] == '.' && f[1] == '/')
+ f += 2;
+
+ /* Create a new array entry. */
+ files[i].path = f;
+ files[i].length = strlen (f);
+ files[i].file_idx = i;
+
+ /* Search for the file name part. */
+ f = strrchr (f, '/');
+ files[i].fname = f == NULL ? files[i].path : f + 1;
+ }
+ qsort (files + 1, file_table.in_use - 1, sizeof (files[0]), file_info_cmp);
+
+ /* Find all the different directories used. */
+ dirs[0].path = files[1].path;
+ dirs[0].length = files[1].fname - files[1].path;
+ dirs[0].prefix = -1;
+ dirs[0].count = 1;
+ dirs[0].dir_idx = 0;
+ dirs[0].used = 0;
+ files[1].dir_idx = 0;
+ ndirs = 1;
+
+ for (i = 2; i < (int) file_table.in_use; ++i)
+ if (files[i].fname - files[i].path == dirs[ndirs - 1].length
+ && memcmp (dirs[ndirs - 1].path, files[i].path,
+ dirs[ndirs - 1].length) == 0)
+ {
+ /* Same directory as last entry. */
+ files[i].dir_idx = ndirs - 1;
+ ++dirs[ndirs - 1].count;
+ }
+ else
+ {
+ int j;
+
+ /* This is a new directory. */
+ dirs[ndirs].path = files[i].path;
+ dirs[ndirs].length = files[i].fname - files[i].path;
+ dirs[ndirs].count = 1;
+ dirs[ndirs].dir_idx = ndirs;
+ dirs[ndirs].used = 0;
+ files[i].dir_idx = ndirs;
+
+ /* Search for a prefix. */
+ dirs[ndirs].prefix = -1;
+ for (j = 0; j < ndirs; ++j)
+ if (dirs[j].length < dirs[ndirs].length
+ && dirs[j].length > 1
+ && (dirs[ndirs].prefix == -1
+ || dirs[j].length > dirs[dirs[ndirs].prefix].length)
+ && memcmp (dirs[j].path, dirs[ndirs].path, dirs[j].length) == 0)
+ dirs[ndirs].prefix = j;
+
+ ++ndirs;
+ }
+
+ /* Now to the actual work. We have to find a subset of the
+ directories which allow expressing the file name using references
+ to the directory table with the least amount of characters. We
+ do not do an exhaustive search where we would have to check out
+ every combination of every single possible prefix. Instead we
+ use a heuristic which provides nearly optimal results in most
+ cases and never is much off. */
+ saved = (int *) alloca (ndirs * sizeof (int));
+ savehere = (int *) alloca (ndirs * sizeof (int));
+
+ memset (saved, '\0', ndirs * sizeof (saved[0]));
+ for (i = 0; i < ndirs; ++i)
+ {
+ int j;
+ int total;
+
+ /* We can always save some space for the current directory. But
+ this does not mean it will be enough to justify adding the
+ directory. */
+ savehere[i] = dirs[i].length;
+ total = (savehere[i] - saved[i]) * dirs[i].count;
+
+ for (j = i + 1; j < ndirs; ++j)
+ {
+ savehere[j] = 0;
+
+ if (saved[j] < dirs[i].length)
+ {
+ /* Determine whether the dirs[i] path is a prefix of the
+ dirs[j] path. */
+ int k;
+
+ k = dirs[j].prefix;
+ while (k != -1 && k != i)
+ k = dirs[k].prefix;
+
+ if (k == i)
+ {
+ /* Yes it is. We can possibly safe some memory but
+ writing the filenames in dirs[j] relative to
+ dirs[i]. */
+ savehere[j] = dirs[i].length;
+ total += (savehere[j] - saved[j]) * dirs[j].count;
+ }
+ }
+ }
+
+ /* Check whether we can safe enough to justify adding the dirs[i]
+ directory. */
+ if (total > dirs[i].length + 1)
+ {
+ /* It's worthwhile adding. */
+ for (j = i; j < ndirs; ++j)
+ if (savehere[j] > 0)
+ {
+ /* Remember how much we saved for this directory so far. */
+ saved[j] = savehere[j];
+
+ /* Remember the prefix directory. */
+ dirs[j].dir_idx = i;
+ }
+ }
+ }
+
+ /* We have to emit them in the order they appear in the file_table
+ array since the index is used in the debug info generation. To
+ do this efficiently we generate a back-mapping of the indices
+ first. */
+ backmap = (int *) alloca (file_table.in_use * sizeof (int));
+ for (i = 1; i < (int) file_table.in_use; ++i)
+ {
+ backmap[files[i].file_idx] = i;
+ /* Mark this directory as used. */
+ dirs[dirs[files[i].dir_idx].dir_idx].used = 1;
+ }
+
+ /* That was it. We are ready to emit the information. First the
+ directory name table. Here we have to make sure that the first
+ actually emitted directory name has the index one. Zero is
+ reserved for the current working directory. Make sure we do not
+ confuse these indices with the one for the constructed table
+ (even though most of the time they are identical). */
+ idx = 1;
+ idx_offset = dirs[0].length > 0 ? 1 : 0;
+ for (i = 1 - idx_offset; i < ndirs; ++i)
+ if (dirs[i].used != 0)
+ {
+ dirs[i].used = idx++;
+ dw2_asm_output_nstring (dirs[i].path, dirs[i].length - 1,
+ "Directory Entry: 0x%x", dirs[i].used);
+ }
+ dw2_asm_output_data (1, 0, "End directory table");
+
+ /* Correct the index for the current working directory entry if it
+ exists. */
+ if (idx_offset == 0)
+ dirs[0].used = 0;
+
+ /* Now write all the file names. */
+ for (i = 1; i < (int) file_table.in_use; ++i)
+ {
+ int file_idx = backmap[i];
+ int dir_idx = dirs[files[file_idx].dir_idx].dir_idx;
+
+ dw2_asm_output_nstring (files[file_idx].path + dirs[dir_idx].length, -1,
+ "File Entry: 0x%x", i);
+
+ /* Include directory index. */
+ dw2_asm_output_data_uleb128 (dirs[dir_idx].used, NULL);
+
+ /* Modification time. */
+ dw2_asm_output_data_uleb128 (0, NULL);
+
+ /* File length in bytes. */
+ dw2_asm_output_data_uleb128 (0, NULL);
+ }
+ dw2_asm_output_data (1, 0, "End file name table");
}
+
/* Output the source line number correspondence information. This
information goes into the .debug_line section. */
static void
output_line_info ()
{
+ char l1[20], l2[20], p1[20], p2[20];
char line_label[MAX_ARTIFICIAL_LABEL_BYTES];
char prev_line_label[MAX_ARTIFICIAL_LABEL_BYTES];
register unsigned opc;
register unsigned n_op_args;
- register unsigned long ft_index;
register unsigned long lt_index;
register unsigned long current_line;
register long line_offset;
register unsigned long current_file;
register unsigned long function;
- ASM_OUTPUT_DWARF_DELTA (asm_out_file, ".LTEND", ".LTSTART");
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Length of Source Line Info.",
- ASM_COMMENT_START);
+ ASM_GENERATE_INTERNAL_LABEL (l1, LINE_NUMBER_BEGIN_LABEL, 0);
+ ASM_GENERATE_INTERNAL_LABEL (l2, LINE_NUMBER_END_LABEL, 0);
+ ASM_GENERATE_INTERNAL_LABEL (p1, LN_PROLOG_AS_LABEL, 0);
+ ASM_GENERATE_INTERNAL_LABEL (p2, LN_PROLOG_END_LABEL, 0);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_LABEL (asm_out_file, ".LTSTART");
- ASM_OUTPUT_DWARF_DATA2 (asm_out_file, DWARF_VERSION);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DWARF Version", ASM_COMMENT_START);
+ dw2_asm_output_delta (DWARF_OFFSET_SIZE, l2, l1,
+ "Length of Source Line Info");
+ ASM_OUTPUT_LABEL (asm_out_file, l1);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA (asm_out_file, size_of_line_prolog ());
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Prolog Length", ASM_COMMENT_START);
+ dw2_asm_output_data (2, DWARF_VERSION, "DWARF Version");
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_MIN_INSTR_LENGTH);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Minimum Instruction Length",
- ASM_COMMENT_START);
+ dw2_asm_output_delta (DWARF_OFFSET_SIZE, p2, p1, "Prolog Length");
+ ASM_OUTPUT_LABEL (asm_out_file, p1);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DWARF_LINE_DEFAULT_IS_STMT_START);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Default is_stmt_start flag",
- ASM_COMMENT_START);
+ dw2_asm_output_data (1, DWARF_LINE_MIN_INSTR_LENGTH,
+ "Minimum Instruction Length");
- fputc ('\n', asm_out_file);
- fprintf (asm_out_file, "\t%s\t%d", ASM_BYTE_OP, DWARF_LINE_BASE);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Line Base Value (Special Opcodes)",
- ASM_COMMENT_START);
+ dw2_asm_output_data (1, DWARF_LINE_DEFAULT_IS_STMT_START,
+ "Default is_stmt_start flag");
- fputc ('\n', asm_out_file);
- fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_RANGE);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Line Range Value (Special Opcodes)",
- ASM_COMMENT_START);
+ dw2_asm_output_data (1, DWARF_LINE_BASE,
+ "Line Base Value (Special Opcodes)");
- fputc ('\n', asm_out_file);
- fprintf (asm_out_file, "\t%s\t%u", ASM_BYTE_OP, DWARF_LINE_OPCODE_BASE);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s Special Opcode Base", ASM_COMMENT_START);
+ dw2_asm_output_data (1, DWARF_LINE_RANGE,
+ "Line Range Value (Special Opcodes)");
+
+ dw2_asm_output_data (1, DWARF_LINE_OPCODE_BASE,
+ "Special Opcode Base");
- fputc ('\n', asm_out_file);
for (opc = 1; opc < DWARF_LINE_OPCODE_BASE; ++opc)
{
switch (opc)
n_op_args = 0;
break;
}
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, n_op_args);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s opcode: 0x%x has %d args",
- ASM_COMMENT_START, opc, n_op_args);
- fputc ('\n', asm_out_file);
- }
-
- if (flag_debug_asm)
- fprintf (asm_out_file, "%s Include Directory Table\n", ASM_COMMENT_START);
-
- /* Include directory table is empty, at present */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- fputc ('\n', asm_out_file);
- if (flag_debug_asm)
- fprintf (asm_out_file, "%s File Name Table\n", ASM_COMMENT_START);
-
- for (ft_index = 1; ft_index < file_table_in_use; ++ft_index)
- {
- if (flag_debug_asm)
- {
- ASM_OUTPUT_DWARF_STRING (asm_out_file, file_table[ft_index]);
- fprintf (asm_out_file, "%s File Entry: 0x%lx",
- ASM_COMMENT_START, ft_index);
- }
- else
- {
- ASM_OUTPUT_ASCII (asm_out_file,
- file_table[ft_index],
- (int) strlen (file_table[ft_index]) + 1);
- }
-
- fputc ('\n', asm_out_file);
- /* Include directory index */
- output_uleb128 (0);
- fputc ('\n', asm_out_file);
-
- /* Modification time */
- output_uleb128 (0);
- fputc ('\n', asm_out_file);
-
- /* File length in bytes */
- output_uleb128 (0);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, n_op_args, "opcode: 0x%x has %d args",
+ opc, n_op_args);
}
- /* Terminate the file name table */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- fputc ('\n', asm_out_file);
+ /* Write out the information about the files we use. */
+ output_file_names ();
+ ASM_OUTPUT_LABEL (asm_out_file, p2);
/* We used to set the address register to the first location in the text
section here, but that didn't accomplish anything since we already
continue;
#endif
- /* Emit debug info for the address of the current line, choosing
- the encoding that uses the least amount of space. */
- /* ??? Unfortunately, we have little choice here currently, and must
- always use the most general form. Gcc does not know the address
- delta itself, so we can't use DW_LNS_advance_pc. There are no known
- dwarf2 aware assemblers at this time, so we can't use any special
- pseudo ops that would allow the assembler to optimally encode this for
- us. Many ports do have length attributes which will give an upper
- bound on the address range. We could perhaps use length attributes
- to determine when it is safe to use DW_LNS_fixed_advance_pc. */
+ /* Emit debug info for the address of the current line.
+
+ Unfortunately, we have little choice here currently, and must always
+ use the most general form. Gcc does not know the address delta
+ itself, so we can't use DW_LNS_advance_pc. Many ports do have length
+ attributes which will give an upper bound on the address range. We
+ could perhaps use length attributes to determine when it is safe to
+ use DW_LNS_fixed_advance_pc. */
+
ASM_GENERATE_INTERNAL_LABEL (line_label, LINE_CODE_LABEL, lt_index);
if (0)
{
/* This can handle deltas up to 0xffff. This takes 3 bytes. */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc",
- ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label, prev_line_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DW_LNS_fixed_advance_pc,
+ "DW_LNS_fixed_advance_pc");
+ dw2_asm_output_delta (2, line_label, prev_line_label, NULL);
}
else
{
/* This can handle any delta. This takes
4+DWARF2_ADDR_SIZE bytes. */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNE_set_address",
- ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
- output_uleb128 (1 + DWARF2_ADDR_SIZE);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, 0, "DW_LNE_set_address");
+ dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL);
+ dw2_asm_output_data (1, DW_LNE_set_address, NULL);
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL);
}
strcpy (prev_line_label, line_label);
if (line_info->dw_file_num != current_file)
{
current_file = line_info->dw_file_num;
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- output_uleb128 (current_file);
- if (flag_debug_asm)
- fprintf (asm_out_file, " (\"%s\")", file_table[current_file]);
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DW_LNS_set_file, "DW_LNS_set_file");
+ dw2_asm_output_data_uleb128 (current_file, "(\"%s\")",
+ file_table.table[current_file]);
}
/* Emit debug info for the current line number, choosing the encoding
/* This can handle deltas from -10 to 234, using the current
definitions of DWARF_LINE_BASE and DWARF_LINE_RANGE. This
takes 1 byte. */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file,
- DWARF_LINE_OPCODE_BASE + line_delta);
- if (flag_debug_asm)
- fprintf (asm_out_file,
- "\t%s line %ld", ASM_COMMENT_START, current_line);
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DWARF_LINE_OPCODE_BASE + line_delta,
+ "line %lu", current_line);
}
else
{
/* This can handle any delta. This takes at least 4 bytes,
depending on the value being encoded. */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s advance to line %ld",
- ASM_COMMENT_START, current_line);
-
- fputc ('\n', asm_out_file);
- output_sleb128 (line_offset);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DW_LNS_advance_line,
+ "advance to line %lu", current_line);
+ dw2_asm_output_data_sleb128 (line_offset, NULL);
+ dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy");
}
}
else
{
/* We still need to start a new row, so output a copy insn. */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy");
}
}
/* Emit debug info for the address of the end of the function. */
if (0)
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc",
- ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, text_end_label, prev_line_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DW_LNS_fixed_advance_pc,
+ "DW_LNS_fixed_advance_pc");
+ dw2_asm_output_delta (2, text_end_label, prev_line_label, NULL);
}
else
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNE_set_address", ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
- output_uleb128 (1 + DWARF2_ADDR_SIZE);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, text_end_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, 0, "DW_LNE_set_address");
+ dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL);
+ dw2_asm_output_data (1, DW_LNE_set_address, NULL);
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, text_end_label, NULL);
}
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNE_end_sequence", ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- output_uleb128 (1);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, 0, "DW_LNE_end_sequence");
+ dw2_asm_output_data_uleb128 (1, NULL);
+ dw2_asm_output_data (1, DW_LNE_end_sequence, NULL);
function = 0;
current_file = 1;
function = line_info->function;
/* Set the address register to the first line in the function */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNE_set_address",
- ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- output_uleb128 (1 + DWARF2_ADDR_SIZE);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, 0, "DW_LNE_set_address");
+ dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL);
+ dw2_asm_output_data (1, DW_LNE_set_address, NULL);
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL);
}
else
{
/* ??? See the DW_LNS_advance_pc comment above. */
if (0)
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc",
- ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label,
- prev_line_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DW_LNS_fixed_advance_pc,
+ "DW_LNS_fixed_advance_pc");
+ dw2_asm_output_delta (2, line_label, prev_line_label, NULL);
}
else
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNE_set_address",
- ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
- output_uleb128 (1 + DWARF2_ADDR_SIZE);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, 0, "DW_LNE_set_address");
+ dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL);
+ dw2_asm_output_data (1, DW_LNE_set_address, NULL);
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL);
}
}
strcpy (prev_line_label, line_label);
if (line_info->dw_file_num != current_file)
{
current_file = line_info->dw_file_num;
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_set_file);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNS_set_file", ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- output_uleb128 (current_file);
- if (flag_debug_asm)
- fprintf (asm_out_file, " (\"%s\")", file_table[current_file]);
-
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DW_LNS_set_file, "DW_LNS_set_file");
+ dw2_asm_output_data_uleb128 (current_file, "(\"%s\")",
+ file_table.table[current_file]);
}
/* Emit debug info for the current line number, choosing the encoding
line_delta = line_offset - DWARF_LINE_BASE;
current_line = line_info->dw_line_num;
if (line_delta >= 0 && line_delta < (DWARF_LINE_RANGE - 1))
- {
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file,
- DWARF_LINE_OPCODE_BASE + line_delta);
- if (flag_debug_asm)
- fprintf (asm_out_file,
- "\t%s line %ld", ASM_COMMENT_START, current_line);
-
- fputc ('\n', asm_out_file);
- }
+ dw2_asm_output_data (1, DWARF_LINE_OPCODE_BASE + line_delta,
+ "line %lu", current_line);
else
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_advance_line);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s advance to line %ld",
- ASM_COMMENT_START, current_line);
-
- fputc ('\n', asm_out_file);
- output_sleb128 (line_offset);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DW_LNS_advance_line,
+ "advance to line %lu", current_line);
+ dw2_asm_output_data_sleb128 (line_offset, NULL);
+ dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy");
}
}
else
- {
- /* We still need to start a new row, so output a copy insn. */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_copy);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNS_copy", ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
- }
+ dw2_asm_output_data (1, DW_LNS_copy, "DW_LNS_copy");
#if 0
cont:
ASM_GENERATE_INTERNAL_LABEL (line_label, FUNC_END_LABEL, function);
if (0)
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNS_fixed_advance_pc);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNS_fixed_advance_pc",
- ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DELTA2 (asm_out_file, line_label,
- prev_line_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, DW_LNS_fixed_advance_pc,
+ "DW_LNS_fixed_advance_pc");
+ dw2_asm_output_delta (2, line_label, prev_line_label, NULL);
}
else
{
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNE_set_address",
- ASM_COMMENT_START);
- fputc ('\n', asm_out_file);
- output_uleb128 (1 + DWARF2_ADDR_SIZE);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_set_address);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_ADDR (asm_out_file, line_label);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, 0, "DW_LNE_set_address");
+ dw2_asm_output_data_uleb128 (1 + DWARF2_ADDR_SIZE, NULL);
+ dw2_asm_output_data (1, DW_LNE_set_address, NULL);
+ dw2_asm_output_addr (DWARF2_ADDR_SIZE, line_label, NULL);
}
/* Output the marker for the end of this sequence. */
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, 0);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s DW_LNE_end_sequence",
- ASM_COMMENT_START);
-
- fputc ('\n', asm_out_file);
- output_uleb128 (1);
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_DWARF_DATA1 (asm_out_file, DW_LNE_end_sequence);
- fputc ('\n', asm_out_file);
+ dw2_asm_output_data (1, 0, "DW_LNE_end_sequence");
+ dw2_asm_output_data_uleb128 (1, NULL);
+ dw2_asm_output_data (1, DW_LNE_end_sequence, NULL);
}
}
/* Output the marker for the end of the line number info. */
- ASM_OUTPUT_LABEL (asm_out_file, ".LTEND");
+ ASM_OUTPUT_LABEL (asm_out_file, l2);
}
\f
/* Given a pointer to a tree node for some base type, return a pointer to
case FILE_TYPE:
case OFFSET_TYPE:
case LANG_TYPE:
+ case VECTOR_TYPE:
return 0;
default:
if (code != ERROR_MARK)
{
- type = build_type_variant (type, is_const_type, is_volatile_type);
-
- mod_type_die = lookup_type_die (type);
- if (mod_type_die)
- return mod_type_die;
+ tree qualified_type;
+
+ /* See if we already have the appropriately qualified variant of
+ this type. */
+ qualified_type
+ = get_qualified_type (type,
+ ((is_const_type ? TYPE_QUAL_CONST : 0)
+ | (is_volatile_type
+ ? TYPE_QUAL_VOLATILE : 0)));
+ /* If we do, then we can just use its DIE, if it exists. */
+ if (qualified_type)
+ {
+ mod_type_die = lookup_type_die (qualified_type);
+ if (mod_type_die)
+ return mod_type_die;
+ }
/* Handle C typedef types. */
- if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
- && DECL_ORIGINAL_TYPE (TYPE_NAME (type)))
+ if (qualified_type && TYPE_NAME (qualified_type)
+ && TREE_CODE (TYPE_NAME (qualified_type)) == TYPE_DECL
+ && DECL_ORIGINAL_TYPE (TYPE_NAME (qualified_type)))
{
- tree dtype = TREE_TYPE (TYPE_NAME (type));
- if (type == dtype)
+ tree type_name = TYPE_NAME (qualified_type);
+ tree dtype = TREE_TYPE (type_name);
+ if (qualified_type == dtype)
{
/* For a named type, use the typedef. */
- gen_type_die (type, context_die);
- mod_type_die = lookup_type_die (type);
+ gen_type_die (qualified_type, context_die);
+ mod_type_die = lookup_type_die (qualified_type);
}
else if (is_const_type < TYPE_READONLY (dtype)
/* cv-unqualified version of named type. Just use the unnamed
type to which it refers. */
mod_type_die
- = modified_type_die (DECL_ORIGINAL_TYPE (TYPE_NAME (type)),
+ = modified_type_die (DECL_ORIGINAL_TYPE (type_name),
is_const_type, is_volatile_type,
context_die);
/* Else cv-qualified version of named type; fall through. */
if (mod_type_die == NULL)
abort ();
}
+
+ /* We want to equate the qualified type to the die below. */
+ if (qualified_type)
+ type = qualified_type;
}
equate_type_number_to_die (type, mod_type_die);
return loc_result;
}
+/* Return a location descriptor that designates a constant. */
+
+static dw_loc_descr_ref
+int_loc_descriptor (i)
+ HOST_WIDE_INT i;
+{
+ enum dwarf_location_atom op;
+
+ /* Pick the smallest representation of a constant, rather than just
+ defaulting to the LEB encoding. */
+ if (i >= 0)
+ {
+ if (i <= 31)
+ op = DW_OP_lit0 + i;
+ else if (i <= 0xff)
+ op = DW_OP_const1u;
+ else if (i <= 0xffff)
+ op = DW_OP_const2u;
+ else if (HOST_BITS_PER_WIDE_INT == 32
+ || i <= 0xffffffff)
+ op = DW_OP_const4u;
+ else
+ op = DW_OP_constu;
+ }
+ else
+ {
+ if (i >= -0x80)
+ op = DW_OP_const1s;
+ else if (i >= -0x8000)
+ op = DW_OP_const2s;
+ else if (HOST_BITS_PER_WIDE_INT == 32
+ || i >= -0x80000000)
+ op = DW_OP_const4s;
+ else
+ op = DW_OP_consts;
+ }
+
+ return new_loc_descr (op, i, 0);
+}
+
/* Return a location descriptor that designates a base+offset location. */
static dw_loc_descr_ref
{
case POST_INC:
case POST_DEC:
+ case POST_MODIFY:
/* POST_INC and POST_DEC can be handled just like a SUBREG. So we
just fall into the SUBREG code. */
up an entire register. For now, just assume that it is
legitimate to make the Dwarf info refer to the whole register which
contains the given subreg. */
- rtl = XEXP (rtl, 0);
+ rtl = SUBREG_REG (rtl);
/* Fall through. */
break;
case MEM:
- mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), mode);
+ mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl));
add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_deref, 0, 0));
break;
- case LABEL_REF:
- /* Some ports can transform a symbol ref into a label ref, because
+ case LABEL_REF:
+ /* Some ports can transform a symbol ref into a label ref, because
the symbol ref is too far away and has to be dumped into a constant
pool. */
case CONST:
case SYMBOL_REF:
+ /* Alternatively, the symbol in the constant pool might be referenced
+ by a different symbol. */
+ if (GET_CODE (rtl) == SYMBOL_REF
+ && CONSTANT_POOL_ADDRESS_P (rtl))
+ {
+ rtx tmp = get_pool_constant (rtl);
+ if (GET_CODE (tmp) == SYMBOL_REF)
+ rtl = tmp;
+ }
+
mem_loc_result = new_loc_descr (DW_OP_addr, 0, 0);
mem_loc_result->dw_loc_oprnd1.val_class = dw_val_class_addr;
mem_loc_result->dw_loc_oprnd1.v.val_addr = save_rtx (rtl);
break;
+ case PRE_MODIFY:
+ /* Extract the PLUS expression nested inside and fall into
+ PLUS code below. */
+ rtl = XEXP (rtl, 1);
+ goto plus;
+
case PRE_INC:
case PRE_DEC:
/* Turn these into a PLUS expression and fall into the PLUS code
/* Fall through. */
case PLUS:
+ plus:
if (is_based_loc (rtl))
mem_loc_result = based_loc_descr (reg_number (XEXP (rtl, 0)),
INTVAL (XEXP (rtl, 1)));
else
{
- add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0),
- mode));
- add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1),
- mode));
- add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_plus, 0, 0));
+ mem_loc_result = mem_loc_descriptor (XEXP (rtl, 0), mode);
+
+ if (GET_CODE (XEXP (rtl, 1)) == CONST_INT
+ && INTVAL (XEXP (rtl, 1)) >= 0)
+ {
+ add_loc_descr (&mem_loc_result,
+ new_loc_descr (DW_OP_plus_uconst,
+ INTVAL (XEXP (rtl, 1)), 0));
+ }
+ else
+ {
+ add_loc_descr (&mem_loc_result,
+ mem_loc_descriptor (XEXP (rtl, 1), mode));
+ add_loc_descr (&mem_loc_result,
+ new_loc_descr (DW_OP_plus, 0, 0));
+ }
}
break;
case MULT:
/* If a pseudo-reg is optimized away, it is possible for it to
be replaced with a MEM containing a multiply. */
- add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 0), mode));
- add_loc_descr (&mem_loc_result, mem_loc_descriptor (XEXP (rtl, 1), mode));
+ add_loc_descr (&mem_loc_result,
+ mem_loc_descriptor (XEXP (rtl, 0), mode));
+ add_loc_descr (&mem_loc_result,
+ mem_loc_descriptor (XEXP (rtl, 1), mode));
add_loc_descr (&mem_loc_result, new_loc_descr (DW_OP_mul, 0, 0));
break;
case CONST_INT:
- mem_loc_result = new_loc_descr (DW_OP_constu, INTVAL (rtl), 0);
+ mem_loc_result = int_loc_descriptor (INTVAL (rtl));
break;
default:
up an entire register. For now, just assume that it is
legitimate to make the Dwarf info refer to the whole register which
contains the given subreg. */
- rtl = XEXP (rtl, 0);
+ rtl = SUBREG_REG (rtl);
/* Fall through. */
loc_result = reg_loc_descriptor (rtl);
break;
- case MEM:
- loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl));
+ case MEM:
+ loc_result = mem_loc_descriptor (XEXP (rtl, 0), GET_MODE (rtl));
+ break;
+
+ case CONCAT:
+ loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1));
+ break;
+
+ default:
+ abort ();
+ }
+
+ return loc_result;
+}
+
+/* Similar, but generate the descriptor from trees instead of rtl.
+ This comes up particularly with variable length arrays. */
+
+static dw_loc_descr_ref
+loc_descriptor_from_tree (loc, addressp)
+ tree loc;
+ int addressp;
+{
+ dw_loc_descr_ref ret = NULL;
+ int indirect_size = 0;
+ int unsignedp = TREE_UNSIGNED (TREE_TYPE (loc));
+ enum dwarf_location_atom op;
+
+ /* ??? Most of the time we do not take proper care for sign/zero
+ extending the values properly. Hopefully this won't be a real
+ problem... */
+
+ switch (TREE_CODE (loc))
+ {
+ case ERROR_MARK:
+ break;
+
+ case WITH_RECORD_EXPR:
+ /* This case involves extracting fields from an object to determine the
+ position of other fields. We don't try to encode this here. The
+ only user of this is Ada, which encodes the needed information using
+ the names of types. */
+ return ret;
+
+ case VAR_DECL:
+ case PARM_DECL:
+ {
+ rtx rtl = rtl_for_decl_location (loc);
+ enum machine_mode mode = DECL_MODE (loc);
+
+ if (rtl == NULL_RTX)
+ break;
+ else if (CONSTANT_P (rtl))
+ {
+ ret = new_loc_descr (DW_OP_addr, 0, 0);
+ ret->dw_loc_oprnd1.val_class = dw_val_class_addr;
+ ret->dw_loc_oprnd1.v.val_addr = rtl;
+ indirect_size = GET_MODE_SIZE (mode);
+ }
+ else
+ {
+ if (GET_CODE (rtl) == MEM)
+ {
+ indirect_size = GET_MODE_SIZE (mode);
+ rtl = XEXP (rtl, 0);
+ }
+ ret = mem_loc_descriptor (rtl, mode);
+ }
+ }
+ break;
+
+ case INDIRECT_REF:
+ ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0);
+ indirect_size = GET_MODE_SIZE (TYPE_MODE (TREE_TYPE (loc)));
+ break;
+
+ case NOP_EXPR:
+ case CONVERT_EXPR:
+ case NON_LVALUE_EXPR:
+ case SAVE_EXPR:
+ return loc_descriptor_from_tree (TREE_OPERAND (loc, 0), addressp);
+
+ case COMPONENT_REF:
+ case BIT_FIELD_REF:
+ case ARRAY_REF:
+ case ARRAY_RANGE_REF:
+ {
+ tree obj, offset;
+ HOST_WIDE_INT bitsize, bitpos, bytepos;
+ enum machine_mode mode;
+ int volatilep;
+ unsigned int alignment;
+
+ obj = get_inner_reference (loc, &bitsize, &bitpos, &offset, &mode,
+ &unsignedp, &volatilep, &alignment);
+ ret = loc_descriptor_from_tree (obj, 1);
+
+ if (offset != NULL_TREE)
+ {
+ /* Variable offset. */
+ add_loc_descr (&ret, loc_descriptor_from_tree (offset, 0));
+ add_loc_descr (&ret, new_loc_descr (DW_OP_plus, 0, 0));
+ }
+
+ if (addressp)
+ {
+ /* We cannot address anything not on a unit boundary. */
+ if (bitpos % BITS_PER_UNIT != 0)
+ abort ();
+ }
+ else
+ {
+ if (bitpos % BITS_PER_UNIT != 0
+ || bitsize % BITS_PER_UNIT != 0)
+ {
+ /* ??? We could handle this by loading and shifting etc.
+ Wait until someone needs it before expending the effort. */
+ abort ();
+ }
+
+ indirect_size = bitsize / BITS_PER_UNIT;
+ }
+
+ bytepos = bitpos / BITS_PER_UNIT;
+ if (bytepos > 0)
+ add_loc_descr (&ret, new_loc_descr (DW_OP_plus_uconst, bytepos, 0));
+ else if (bytepos < 0)
+ {
+ add_loc_descr (&ret, int_loc_descriptor (bytepos));
+ add_loc_descr (&ret, new_loc_descr (DW_OP_plus, 0, 0));
+ }
+ break;
+ }
+
+ case INTEGER_CST:
+ if (host_integerp (loc, 0))
+ ret = int_loc_descriptor (tree_low_cst (loc, 0));
+ break;
+
+ case BIT_AND_EXPR:
+ op = DW_OP_and;
+ goto do_binop;
+ case BIT_XOR_EXPR:
+ op = DW_OP_xor;
+ goto do_binop;
+ case BIT_IOR_EXPR:
+ op = DW_OP_or;
+ goto do_binop;
+ case TRUNC_DIV_EXPR:
+ op = DW_OP_div;
+ goto do_binop;
+ case MINUS_EXPR:
+ op = DW_OP_minus;
+ goto do_binop;
+ case TRUNC_MOD_EXPR:
+ op = DW_OP_mod;
+ goto do_binop;
+ case MULT_EXPR:
+ op = DW_OP_mul;
+ goto do_binop;
+ case LSHIFT_EXPR:
+ op = DW_OP_shl;
+ goto do_binop;
+ case RSHIFT_EXPR:
+ op = (unsignedp ? DW_OP_shr : DW_OP_shra);
+ goto do_binop;
+ case PLUS_EXPR:
+ if (TREE_CODE (TREE_OPERAND (loc, 1)) == INTEGER_CST
+ && host_integerp (TREE_OPERAND (loc, 1), 0))
+ {
+ ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0);
+ add_loc_descr (&ret,
+ new_loc_descr (DW_OP_plus_uconst,
+ tree_low_cst (TREE_OPERAND (loc, 1),
+ 0),
+ 0));
+ break;
+ }
+ op = DW_OP_plus;
+ goto do_binop;
+ case LE_EXPR:
+ if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0))))
+ break;
+ op = DW_OP_le;
+ goto do_binop;
+ case GE_EXPR:
+ if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0))))
+ break;
+ op = DW_OP_ge;
+ goto do_binop;
+ case LT_EXPR:
+ if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0))))
+ break;
+ op = DW_OP_lt;
+ goto do_binop;
+ case GT_EXPR:
+ if (TREE_UNSIGNED (TREE_TYPE (TREE_OPERAND (loc, 0))))
+ break;
+ op = DW_OP_gt;
+ goto do_binop;
+ case EQ_EXPR:
+ op = DW_OP_eq;
+ goto do_binop;
+ case NE_EXPR:
+ op = DW_OP_ne;
+ goto do_binop;
+
+ do_binop:
+ ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0);
+ add_loc_descr (&ret, loc_descriptor_from_tree (TREE_OPERAND (loc, 1), 0));
+ add_loc_descr (&ret, new_loc_descr (op, 0, 0));
+ break;
+
+ case BIT_NOT_EXPR:
+ op = DW_OP_not;
+ goto do_unop;
+ case ABS_EXPR:
+ op = DW_OP_abs;
+ goto do_unop;
+ case NEGATE_EXPR:
+ op = DW_OP_neg;
+ goto do_unop;
+
+ do_unop:
+ ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0);
+ add_loc_descr (&ret, new_loc_descr (op, 0, 0));
break;
- case CONCAT:
- loc_result = concat_loc_descriptor (XEXP (rtl, 0), XEXP (rtl, 1));
+ case MAX_EXPR:
+ loc = build (COND_EXPR, TREE_TYPE (loc),
+ build (LT_EXPR, integer_type_node,
+ TREE_OPERAND (loc, 0), TREE_OPERAND (loc, 1)),
+ TREE_OPERAND (loc, 1), TREE_OPERAND (loc, 0));
+ /* FALLTHRU */
+
+ case COND_EXPR:
+ {
+ dw_loc_descr_ref bra_node, jump_node, tmp;
+
+ ret = loc_descriptor_from_tree (TREE_OPERAND (loc, 0), 0);
+ bra_node = new_loc_descr (DW_OP_bra, 0, 0);
+ add_loc_descr (&ret, bra_node);
+
+ tmp = loc_descriptor_from_tree (TREE_OPERAND (loc, 2), 0);
+ add_loc_descr (&ret, tmp);
+ jump_node = new_loc_descr (DW_OP_skip, 0, 0);
+ add_loc_descr (&ret, jump_node);
+
+ tmp = loc_descriptor_from_tree (TREE_OPERAND (loc, 1), 0);
+ add_loc_descr (&ret, tmp);
+ bra_node->dw_loc_oprnd1.val_class = dw_val_class_loc;
+ bra_node->dw_loc_oprnd1.v.val_loc = tmp;
+
+ /* ??? Need a node to point the skip at. Use a nop. */
+ tmp = new_loc_descr (DW_OP_nop, 0, 0);
+ add_loc_descr (&ret, tmp);
+ jump_node->dw_loc_oprnd1.val_class = dw_val_class_loc;
+ jump_node->dw_loc_oprnd1.v.val_loc = tmp;
+ }
break;
default:
abort ();
}
- return loc_result;
+ /* If we can't fill the request for an address, die. */
+ if (addressp && indirect_size == 0)
+ abort ();
+
+ /* If we've got an address and don't want one, dereference. */
+ if (!addressp && indirect_size > 0)
+ {
+ if (indirect_size > DWARF2_ADDR_SIZE)
+ abort ();
+ if (indirect_size == DWARF2_ADDR_SIZE)
+ op = DW_OP_deref;
+ else
+ op = DW_OP_deref_size;
+ add_loc_descr (&ret, new_loc_descr (op, indirect_size, 0));
+ }
+
+ return ret;
}
/* Given a value, round it up to the lowest multiple of `boundary'
return type;
}
-/* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE
- node, return the alignment in bits for the type, or else return
- BITS_PER_WORD if the node actually turns out to be an
- ERROR_MARK node. */
+/* Given a pointer to a tree node, return the alignment in bits for
+ it, or else return BITS_PER_WORD if the node actually turns out to
+ be an ERROR_MARK node. */
static inline unsigned
simple_type_align_in_bits (type)
return (TREE_CODE (type) != ERROR_MARK) ? TYPE_ALIGN (type) : BITS_PER_WORD;
}
+static inline unsigned
+simple_decl_align_in_bits (decl)
+ register tree decl;
+{
+ return (TREE_CODE (decl) != ERROR_MARK) ? DECL_ALIGN (decl) : BITS_PER_WORD;
+}
+
/* Given a pointer to a tree node, assumed to be some kind of a ..._TYPE
node, return the size in bits for the type if it is a constant, or else
return the alignment for the type if the type's size is not constant, or
simple_type_size_in_bits (type)
register tree type;
{
+ tree type_size_tree;
+
if (TREE_CODE (type) == ERROR_MARK)
return BITS_PER_WORD;
- else
- {
- register tree type_size_tree = TYPE_SIZE (type);
+ type_size_tree = TYPE_SIZE (type);
- if (! host_integerp (type_size_tree, 1))
- return TYPE_ALIGN (type);
-
- return tree_low_cst (type_size_tree, 1);
- }
+ if (type_size_tree == NULL_TREE)
+ return 0;
+ if (! host_integerp (type_size_tree, 1))
+ return TYPE_ALIGN (type);
+ return tree_low_cst (type_size_tree, 1);
}
/* Given a pointer to what is assumed to be a FIELD_DECL node, compute and
field_byte_offset (decl)
register tree decl;
{
- unsigned int type_align_in_bytes;
unsigned int type_align_in_bits;
+ unsigned int decl_align_in_bits;
unsigned HOST_WIDE_INT type_size_in_bits;
- HOST_WIDE_INT object_offset_in_align_units;
HOST_WIDE_INT object_offset_in_bits;
HOST_WIDE_INT object_offset_in_bytes;
tree type;
type = field_type (decl);
field_size_tree = DECL_SIZE (decl);
- /* If there was an error, the size could be zero. */
+ /* The size could be unspecified if there was an error, or for
+ a flexible array member. */
if (! field_size_tree)
- {
- if (errorcount)
- return 0;
-
- abort ();
- }
+ field_size_tree = bitsize_zero_node;
/* We cannot yet cope with fields whose positions are variable, so
for now, when we see such things, we simply return 0. Someday, we may
bitpos_int = int_bit_position (decl);
- /* If we don't know the size of the field, pretend it's a full word. */
+ /* If we don't know the size of the field, pretend it's a full word. */
if (host_integerp (field_size_tree, 1))
field_size_in_bits = tree_low_cst (field_size_tree, 1);
else
type_size_in_bits = simple_type_size_in_bits (type);
type_align_in_bits = simple_type_align_in_bits (type);
- type_align_in_bytes = type_align_in_bits / BITS_PER_UNIT;
+ decl_align_in_bits = simple_decl_align_in_bits (decl);
/* Note that the GCC front-end doesn't make any attempt to keep track of
the starting bit offset (relative to the start of the containing
/* This is the tricky part. Use some fancy footwork to deduce where the
lowest addressed bit of the containing object must be. */
- object_offset_in_bits
- = ceiling (deepest_bitpos, type_align_in_bits) - type_size_in_bits;
+ object_offset_in_bits = deepest_bitpos - type_size_in_bits;
- /* Compute the offset of the containing object in "alignment units". */
- object_offset_in_align_units = object_offset_in_bits / type_align_in_bits;
+ /* Round up to type_align by default. This works best for bitfields. */
+ object_offset_in_bits += type_align_in_bits - 1;
+ object_offset_in_bits /= type_align_in_bits;
+ object_offset_in_bits *= type_align_in_bits;
+
+ if (object_offset_in_bits > bitpos_int)
+ {
+ /* Sigh, the decl must be packed. */
+ object_offset_in_bits = deepest_bitpos - type_size_in_bits;
+
+ /* Round up to decl_align instead. */
+ object_offset_in_bits += decl_align_in_bits - 1;
+ object_offset_in_bits /= decl_align_in_bits;
+ object_offset_in_bits *= decl_align_in_bits;
+ }
- /* Compute the offset of the containing object in bytes. */
- object_offset_in_bytes = object_offset_in_align_units * type_align_in_bytes;
+ object_offset_in_bytes = object_offset_in_bits / BITS_PER_UNIT;
return object_offset_in_bytes;
}
switch (GET_CODE (rtl))
{
case CONST_INT:
- /* Note that a CONST_INT rtx could represent either an integer or a
- floating-point constant. A CONST_INT is used whenever the constant
- will fit into a single word. In all such cases, the original mode
- of the constant value is wiped out, and the CONST_INT rtx is
- assigned VOIDmode. */
- add_AT_unsigned (die, DW_AT_const_value, (unsigned) INTVAL (rtl));
+ /* Note that a CONST_INT rtx could represent either an integer
+ or a floating-point constant. A CONST_INT is used whenever
+ the constant will fit into a single word. In all such
+ cases, the original mode of the constant value is wiped
+ out, and the CONST_INT rtx is assigned VOIDmode. */
+ {
+ HOST_WIDE_INT val = INTVAL (rtl);
+
+ /* ??? We really should be using HOST_WIDE_INT throughout. */
+ if (val < 0)
+ {
+ if ((long) val != val)
+ abort ();
+ add_AT_int (die, DW_AT_const_value, (long) val);
+ }
+ else
+ {
+ if ((unsigned long) val != (unsigned HOST_WIDE_INT) val)
+ abort ();
+ add_AT_int (die, DW_AT_const_value, (unsigned long) val);
+ }
+ }
break;
case CONST_DOUBLE:
if (GET_MODE_CLASS (mode) == MODE_FLOAT)
{
- register unsigned length = GET_MODE_SIZE (mode) / sizeof (long);
- long array[4];
+ register unsigned length = GET_MODE_SIZE (mode) / 4;
+ long *array = (long *) xmalloc (sizeof (long) * length);
REAL_VALUE_TYPE rv;
REAL_VALUE_FROM_CONST_DOUBLE (rv, rtl);
add_AT_float (die, DW_AT_const_value, length, array);
}
else
- add_AT_long_long (die, DW_AT_const_value,
- CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl));
+ {
+ /* ??? We really should be using HOST_WIDE_INT throughout. */
+ if (HOST_BITS_PER_LONG != HOST_BITS_PER_WIDE_INT)
+ abort ();
+ add_AT_long_long (die, DW_AT_const_value,
+ CONST_DOUBLE_HIGH (rtl), CONST_DOUBLE_LOW (rtl));
+ }
}
break;
}
-/* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value
- data attribute for a variable or a parameter. We generate the
- DW_AT_const_value attribute only in those cases where the given variable
- or parameter does not have a true "location" either in memory or in a
- register. This can happen (for example) when a constant is passed as an
- actual argument in a call to an inline function. (It's possible that
- these things can crop up in other ways also.) Note that one type of
- constant value which can be passed into an inlined function is a constant
- pointer. This can happen for example if an actual argument in an inlined
- function call evaluates to a compile-time constant address. */
-
-static void
-add_location_or_const_value_attribute (die, decl)
- register dw_die_ref die;
- register tree decl;
+static rtx
+rtl_for_decl_location (decl)
+ tree decl;
{
register rtx rtl;
- register tree declared_type;
- register tree passed_type;
-
- if (TREE_CODE (decl) == ERROR_MARK)
- return;
-
- if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL)
- abort ();
/* Here we have to decide where we are going to say the parameter "lives"
(as far as the debugger is concerned). We only have a couple of
gets fixed). */
/* Use DECL_RTL as the "location" unless we find something better. */
- rtl = DECL_RTL (decl);
+ rtl = DECL_RTL_IF_SET (decl);
if (TREE_CODE (decl) == PARM_DECL)
{
if (rtl == NULL_RTX || is_pseudo_reg (rtl))
{
- declared_type = type_main_variant (TREE_TYPE (decl));
- passed_type = type_main_variant (DECL_ARG_TYPE (decl));
+ tree declared_type = type_main_variant (TREE_TYPE (decl));
+ tree passed_type = type_main_variant (DECL_ARG_TYPE (decl));
/* This decl represents a formal parameter which was optimized out.
Note that DECL_INCOMING_RTL may be NULL in here, but we handle
}
}
- if (rtl == NULL_RTX)
- return;
-
- rtl = eliminate_regs (rtl, 0, NULL_RTX);
+ if (rtl != NULL_RTX)
+ {
+ rtl = eliminate_regs (rtl, 0, NULL_RTX);
#ifdef LEAF_REG_REMAP
- if (current_function_uses_only_leaf_regs)
- leaf_renumber_regs_insn (rtl);
+ if (current_function_uses_only_leaf_regs)
+ leaf_renumber_regs_insn (rtl);
#endif
+ }
+
+ return rtl;
+}
+
+/* Generate *either* an DW_AT_location attribute or else an DW_AT_const_value
+ data attribute for a variable or a parameter. We generate the
+ DW_AT_const_value attribute only in those cases where the given variable
+ or parameter does not have a true "location" either in memory or in a
+ register. This can happen (for example) when a constant is passed as an
+ actual argument in a call to an inline function. (It's possible that
+ these things can crop up in other ways also.) Note that one type of
+ constant value which can be passed into an inlined function is a constant
+ pointer. This can happen for example if an actual argument in an inlined
+ function call evaluates to a compile-time constant address. */
+
+static void
+add_location_or_const_value_attribute (die, decl)
+ register dw_die_ref die;
+ register tree decl;
+{
+ register rtx rtl;
+
+ if (TREE_CODE (decl) == ERROR_MARK)
+ return;
+
+ if (TREE_CODE (decl) != VAR_DECL && TREE_CODE (decl) != PARM_DECL)
+ abort ();
+
+ rtl = rtl_for_decl_location (decl);
+ if (rtl == NULL_RTX)
+ return;
switch (GET_CODE (rtl))
{
}
}
+/* If we don't have a copy of this variable in memory for some reason (such
+ as a C++ member constant that doesn't have an out-of-line definition),
+ we should tell the debugger about the constant value. */
+
+static void
+tree_add_const_value_attribute (var_die, decl)
+ dw_die_ref var_die;
+ tree decl;
+{
+ tree init = DECL_INITIAL (decl);
+ tree type = TREE_TYPE (decl);
+
+ if (TREE_READONLY (decl) && ! TREE_THIS_VOLATILE (decl) && init
+ && initializer_constant_valid_p (init, type) == null_pointer_node)
+ /* OK */;
+ else
+ return;
+
+ switch (TREE_CODE (type))
+ {
+ case INTEGER_TYPE:
+ if (host_integerp (init, 0))
+ add_AT_unsigned (var_die, DW_AT_const_value,
+ TREE_INT_CST_LOW (init));
+ else
+ add_AT_long_long (var_die, DW_AT_const_value,
+ TREE_INT_CST_HIGH (init),
+ TREE_INT_CST_LOW (init));
+ break;
+
+ default:;
+ }
+}
+
/* Generate an DW_AT_name attribute given some string value to be included as
the value of the attribute. */
We assume that a MEM rtx is safe because gcc wouldn't put the
value there unless it was going to be used repeatedly in the
function, i.e. for cleanups. */
- if (! optimize || (SAVE_EXPR_RTL (bound)
- && GET_CODE (SAVE_EXPR_RTL (bound)) == MEM))
+ if (SAVE_EXPR_RTL (bound)
+ && (! optimize || GET_CODE (SAVE_EXPR_RTL (bound)) == MEM))
{
register dw_die_ref ctx = lookup_decl_die (current_function_decl);
register dw_die_ref decl_die = new_die (DW_TAG_variable, ctx);
/* Else leave out the attribute. */
break;
- case MAX_EXPR:
case VAR_DECL:
- case COMPONENT_REF:
- /* ??? These types of bounds can be created by the Ada front end,
- and it isn't clear how to emit debug info for them. */
- break;
+ case PARM_DECL:
+ {
+ dw_die_ref decl_die = lookup_decl_die (bound);
+
+ /* ??? Can this happen, or should the variable have been bound
+ first? Probably it can, since I imagine that we try to create
+ the types of parameters in the order in which they exist in
+ the list, and won't have created a forward reference to a
+ later parameter. */
+ if (decl_die != NULL)
+ add_AT_die_ref (subrange_die, bound_attr, decl_die);
+ break;
+ }
default:
- abort ();
+ {
+ /* Otherwise try to create a stack operation procedure to
+ evaluate the value of the array bound. */
+
+ dw_die_ref ctx, decl_die;
+ dw_loc_descr_ref loc;
+
+ loc = loc_descriptor_from_tree (bound, 0);
+ if (loc == NULL)
+ break;
+
+ ctx = lookup_decl_die (current_function_decl);
+
+ decl_die = new_die (DW_TAG_variable, ctx);
+ add_AT_flag (decl_die, DW_AT_artificial, 1);
+ add_type_attribute (decl_die, TREE_TYPE (bound), 1, 0, ctx);
+ add_AT_loc (decl_die, DW_AT_location, loc);
+
+ add_AT_die_ref (subrange_die, bound_attr, decl_die);
+ break;
+ }
}
}
fn = TYPE_STUB_DECL (fn);
fn = decl_function_context (fn);
if (fn)
- gen_abstract_function (fn);
+ dwarf2out_abstract_function (fn);
}
if (DECL_P (origin))
if ((TREE_CODE (decl) == FUNCTION_DECL || TREE_CODE (decl) == VAR_DECL)
&& TREE_PUBLIC (decl)
- && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl))
+ && DECL_ASSEMBLER_NAME (decl) != DECL_NAME (decl)
+ && !DECL_ABSTRACT (decl))
add_AT_string (die, DW_AT_MIPS_linkage_name,
IDENTIFIER_POINTER (DECL_ASSEMBLER_NAME (decl)));
}
{
register tree link;
register tree formal_type = NULL;
- register tree first_parm_type = TYPE_ARG_TYPES (function_or_method_type);
+ register tree first_parm_type;
+ tree arg;
-#if 0
- /* In the case where we are generating a formal types list for a C++
- non-static member function type, skip over the first thing on the
- TYPE_ARG_TYPES list because it only represents the type of the hidden
- `this pointer'. The debugger should be able to figure out (without
- being explicitly told) that this non-static member function type takes a
- `this pointer' and should be able to figure what the type of that hidden
- parameter is from the DW_AT_member attribute of the parent
- DW_TAG_subroutine_type DIE. */
- if (TREE_CODE (function_or_method_type) == METHOD_TYPE)
- first_parm_type = TREE_CHAIN (first_parm_type);
-#endif
+ if (TREE_CODE (function_or_method_type) == FUNCTION_DECL)
+ {
+ arg = DECL_ARGUMENTS (function_or_method_type);
+ function_or_method_type = TREE_TYPE (function_or_method_type);
+ }
+ else
+ arg = NULL_TREE;
+
+ first_parm_type = TYPE_ARG_TYPES (function_or_method_type);
/* Make our first pass over the list of formal parameter types and output a
DW_TAG_formal_parameter DIE for each one. */
- for (link = first_parm_type; link; link = TREE_CHAIN (link))
+ for (link = first_parm_type; link; )
{
register dw_die_ref parm_die;
/* Output a (nameless) DIE to represent the formal parameter itself. */
parm_die = gen_formal_parameter_die (formal_type, context_die);
- if (TREE_CODE (function_or_method_type) == METHOD_TYPE
- && link == first_parm_type)
+ if ((TREE_CODE (function_or_method_type) == METHOD_TYPE
+ && link == first_parm_type)
+ || (arg && DECL_ARTIFICIAL (arg)))
add_AT_flag (parm_die, DW_AT_artificial, 1);
+
+ link = TREE_CHAIN (link);
+ if (arg)
+ arg = TREE_CHAIN (arg);
}
/* If this function type has an ellipsis, add a
out-of-line instances of. */
static void
-gen_abstract_function (decl)
+dwarf2out_abstract_function (decl)
tree decl;
{
- register dw_die_ref old_die = lookup_decl_die (decl);
+ register dw_die_ref old_die;
tree save_fn;
+ tree context;
+ int was_abstract = DECL_ABSTRACT (decl);
+ /* Make sure we have the actual abstract inline, not a clone. */
+ decl = DECL_ORIGIN (decl);
+
+ old_die = lookup_decl_die (decl);
if (old_die && get_AT_unsigned (old_die, DW_AT_inline))
/* We've already generated the abstract instance. */
return;
+ /* Be sure we've emitted the in-class declaration DIE (if any) first, so
+ we don't get confused by DECL_ABSTRACT. */
+ if (debug_info_level > DINFO_LEVEL_TERSE)
+ {
+ context = decl_class_context (decl);
+ if (context)
+ gen_type_die_for_member
+ (context, decl, decl_function_context (decl) ? NULL : comp_unit_die);
+ }
+
+ /* Pretend we've just finished compiling this function. */
save_fn = current_function_decl;
current_function_decl = decl;
set_decl_abstract_flags (decl, 1);
dwarf2out_decl (decl);
- set_decl_abstract_flags (decl, 0);
+ if (! was_abstract)
+ set_decl_abstract_flags (decl, 0);
current_function_decl = save_fn;
}
subr_die = new_die (DW_TAG_subprogram, context_die);
add_abstract_origin_attribute (subr_die, origin);
}
- else if (old_die && DECL_ABSTRACT (decl)
- && get_AT_unsigned (old_die, DW_AT_inline))
- {
- /* This must be a redefinition of an extern inline function.
- We can just reuse the old die here. */
- subr_die = old_die;
-
- /* Clear out the inlined attribute and parm types. */
- remove_AT (subr_die, DW_AT_inline);
- remove_children (subr_die);
- }
else if (old_die)
{
- register unsigned file_index
- = lookup_filename (DECL_SOURCE_FILE (decl));
+ unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl));
- if (get_AT_flag (old_die, DW_AT_declaration) != 1)
+ if (!get_AT_flag (old_die, DW_AT_declaration)
+ /* We can have a normal definition following an inline one in the
+ case of redefinition of GNU C extern inlines.
+ It seems reasonable to use AT_specification in this case. */
+ && !get_AT_unsigned (old_die, DW_AT_inline))
{
/* ??? This can happen if there is a bug in the program, for
instance, if it has duplicate function definitions. Ideally,
/* If the definition comes from the same place as the declaration,
maybe use the old DIE. We always want the DIE for this function
that has the *_pc attributes to be under comp_unit_die so the
- debugger can find it. For inlines, that is the concrete instance,
- so we can use the old DIE here. For non-inline methods, we want a
- specification DIE at toplevel, so we need a new DIE. For local
- class methods, this doesn't apply; we just use the old DIE. */
- if ((DECL_ABSTRACT (decl) || old_die->die_parent == comp_unit_die
- || context_die == NULL)
+ debugger can find it. We also need to do this for abstract
+ instances of inlines, since the spec requires the out-of-line copy
+ to have the same parent. For local class methods, this doesn't
+ apply; we just use the old DIE. */
+ if ((old_die->die_parent == comp_unit_die || context_die == NULL)
&& (DECL_ARTIFICIAL (decl)
|| (get_AT_unsigned (old_die, DW_AT_decl_file) == file_index
&& (get_AT_unsigned (old_die, DW_AT_decl_line)
if (declaration)
{
- if (! origin)
- add_AT_flag (subr_die, DW_AT_declaration, 1);
-
- /* The first time we see a member function, it is in the context of
- the class to which it belongs. We make sure of this by emitting
- the class first. The next time is the definition, which is
- handled above. The two may come from the same source text. */
- if (DECL_CONTEXT (decl) || DECL_ABSTRACT (decl))
- equate_decl_number_to_die (decl, subr_die);
+ if (!(old_die && get_AT_unsigned (old_die, DW_AT_inline)))
+ {
+ add_AT_flag (subr_die, DW_AT_declaration, 1);
+
+ /* The first time we see a member function, it is in the context of
+ the class to which it belongs. We make sure of this by emitting
+ the class first. The next time is the definition, which is
+ handled above. The two may come from the same source text. */
+ if (DECL_CONTEXT (decl) || DECL_ABSTRACT (decl))
+ equate_decl_number_to_die (decl, subr_die);
+ }
}
else if (DECL_ABSTRACT (decl))
{
}
else if (!DECL_EXTERNAL (decl))
{
- if (origin == NULL_TREE)
+ if (!(old_die && get_AT_unsigned (old_die, DW_AT_inline)))
equate_decl_number_to_die (decl, subr_die);
ASM_GENERATE_INTERNAL_LABEL (label_id, FUNC_BEGIN_LABEL,
if (debug_info_level <= DINFO_LEVEL_TERSE)
;
else if (declaration)
- gen_formal_types_die (TREE_TYPE (decl), subr_die);
+ gen_formal_types_die (decl, subr_die);
else
{
/* Generate DIEs to represent all known formal parameters */
add_AT_die_ref (var_die, DW_AT_specification, old_die);
if (DECL_NAME (decl))
{
- register unsigned file_index
- = lookup_filename (DECL_SOURCE_FILE (decl));
+ unsigned file_index = lookup_filename (DECL_SOURCE_FILE (decl));
if (get_AT_unsigned (old_die, DW_AT_decl_file) != file_index)
add_AT_unsigned (var_die, DW_AT_decl_file, file_index);
add_location_or_const_value_attribute (var_die, decl);
add_pubname (decl, var_die);
}
+ else
+ tree_add_const_value_attribute (var_die, decl);
}
/* Generate a DIE to represent a label identifier. */
register dw_die_ref lbl_die = new_die (DW_TAG_label, context_die);
register rtx insn;
char label[MAX_ARTIFICIAL_LABEL_BYTES];
- char label2[MAX_ARTIFICIAL_LABEL_BYTES];
if (origin != NULL)
add_abstract_origin_attribute (lbl_die, origin);
if (INSN_DELETED_P (insn))
abort ();
- sprintf (label2, INSN_LABEL_FMT, current_funcdef_number);
- ASM_GENERATE_INTERNAL_LABEL (label, label2,
- (unsigned) INSN_UID (insn));
+ ASM_GENERATE_INTERNAL_LABEL (label, "L", CODE_LABEL_NUMBER (insn));
add_AT_lbl_id (lbl_die, DW_AT_low_pc, label);
}
}
char label[MAX_ARTIFICIAL_LABEL_BYTES];
/* Emit info for the abstract instance first, if we haven't yet. */
- gen_abstract_function (decl);
+ dwarf2out_abstract_function (decl);
add_abstract_origin_attribute (subr_die, decl);
ASM_GENERATE_INTERNAL_LABEL (label, BLOCK_BEGIN_LABEL,
/* Now output info about the function members (if any). */
for (member = TYPE_METHODS (type); member; member = TREE_CHAIN (member))
{
+ /* Don't include clones in the member list. */
+ if (DECL_ABSTRACT_ORIGIN (member))
+ continue;
+
child = lookup_decl_die (member);
if (child)
splice_child_die (context_die, child);
&& (current_function_decl == NULL_TREE || DECL_ARTIFICIAL (decl)))
break;
+ /* If we're emitting a clone, emit info for the abstract instance. */
+ if (DECL_ORIGIN (decl) != decl)
+ dwarf2out_abstract_function (DECL_ABSTRACT_ORIGIN (decl));
/* If we're emitting an out-of-line copy of an inline function,
emit info for the abstract instance and set up to refer to it. */
- if (DECL_INLINE (decl) && ! DECL_ABSTRACT (decl)
- && ! class_scope_p (context_die)
- /* gen_abstract_function won't emit a die if this is just a
- declaration. We must avoid setting DECL_ABSTRACT_ORIGIN in
- that case, because that works only if we have a die. */
- && DECL_INITIAL (decl) != NULL_TREE)
+ else if (DECL_INLINE (decl) && ! DECL_ABSTRACT (decl)
+ && ! class_scope_p (context_die)
+ /* dwarf2out_abstract_function won't emit a die if this is just
+ a declaration. We must avoid setting DECL_ABSTRACT_ORIGIN in
+ that case, because that works only if we have a die. */
+ && DECL_INITIAL (decl) != NULL_TREE)
{
- gen_abstract_function (decl);
+ dwarf2out_abstract_function (decl);
set_decl_origin_self (decl);
}
-
- if (debug_info_level > DINFO_LEVEL_TERSE)
+ /* Otherwise we're emitting the primary DIE for this decl. */
+ else if (debug_info_level > DINFO_LEVEL_TERSE)
{
/* Before we describe the FUNCTION_DECL itself, make sure that we
have described its return type. */
}
}
+/* Debug information for a global DECL. Called from toplev.c after
+ compilation proper has finished. */
+static void
+dwarf2out_global_decl (decl)
+ tree decl;
+{
+ /* Output DWARF2 information for file-scope tentative data object
+ declarations, file-scope (extern) function declarations (which
+ had no corresponding body) and file-scope tagged type
+ declarations and definitions which have not yet been forced out. */
+
+ if (TREE_CODE (decl) != FUNCTION_DECL || !DECL_INITIAL (decl))
+ dwarf2out_decl (decl);
+}
+
/* Write the debugging output for DECL. */
void
/* Output a marker (i.e. a label) for the beginning of the generated code for
a lexical block. */
-void
-dwarf2out_begin_block (blocknum)
- register unsigned blocknum;
+static void
+dwarf2out_begin_block (line, blocknum)
+ unsigned int line ATTRIBUTE_UNUSED;
+ unsigned int blocknum;
{
function_section (current_function_decl);
- ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum);
+ ASM_OUTPUT_DEBUG_LABEL (asm_out_file, BLOCK_BEGIN_LABEL, blocknum);
}
/* Output a marker (i.e. a label) for the end of the generated code for a
lexical block. */
-void
-dwarf2out_end_block (blocknum)
- register unsigned blocknum;
+static void
+dwarf2out_end_block (line, blocknum)
+ unsigned int line ATTRIBUTE_UNUSED;
+ unsigned int blocknum;
{
function_section (current_function_decl);
- ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum);
+ ASM_OUTPUT_DEBUG_LABEL (asm_out_file, BLOCK_END_LABEL, blocknum);
}
/* Returns nonzero if it is appropriate not to emit any debugging
as we would end up with orphans, and in the presence of scheduling
we may end up calling them anyway. */
-int
+static bool
dwarf2out_ignore_block (block)
tree block;
{
return 1;
}
-/* Output a marker (i.e. a label) at a point in the assembly code which
- corresponds to a given source level label. */
-
-void
-dwarf2out_label (insn)
- register rtx insn;
-{
- char label[MAX_ARTIFICIAL_LABEL_BYTES];
-
- if (debug_info_level >= DINFO_LEVEL_NORMAL)
- {
- function_section (current_function_decl);
- sprintf (label, INSN_LABEL_FMT, current_funcdef_number);
- ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, label,
- (unsigned) INSN_UID (insn));
- }
-}
-
/* Lookup a filename (in the list of filenames that we know about here in
dwarf2out.c) and return its "index". The index of each (known) filename is
just a unique number which is associated with only that one filename.
lookup_filename (file_name)
const char *file_name;
{
- static unsigned last_file_lookup_index = 0;
register unsigned i;
- /* Check to see if the file name that was searched on the previous call
- matches this file name. If so, return the index. */
- if (last_file_lookup_index != 0)
- if (strcmp (file_name, file_table[last_file_lookup_index]) == 0)
- return last_file_lookup_index;
+ /* ??? Why isn't DECL_SOURCE_FILE left null instead. */
+ if (strcmp (file_name, "<internal>") == 0
+ || strcmp (file_name, "<built-in>") == 0)
+ return 0;
+
+ /* Check to see if the file name that was searched on the previous
+ call matches this file name. If so, return the index. */
+ if (file_table.last_lookup_index != 0)
+ if (strcmp (file_name, file_table.table[file_table.last_lookup_index]) == 0)
+ return file_table.last_lookup_index;
/* Didn't match the previous lookup, search the table */
- for (i = 1; i < file_table_in_use; ++i)
- if (strcmp (file_name, file_table[i]) == 0)
+ for (i = 1; i < file_table.in_use; ++i)
+ if (strcmp (file_name, file_table.table[i]) == 0)
{
- last_file_lookup_index = i;
+ file_table.last_lookup_index = i;
return i;
}
/* Prepare to add a new table entry by making sure there is enough space in
the table to do so. If not, expand the current table. */
- if (file_table_in_use == file_table_allocated)
+ if (i == file_table.allocated)
{
- file_table_allocated += FILE_TABLE_INCREMENT;
- file_table
- = (char **) xrealloc (file_table,
- file_table_allocated * sizeof (char *));
+ file_table.allocated = i + FILE_TABLE_INCREMENT;
+ file_table.table = (char **)
+ xrealloc (file_table.table, file_table.allocated * sizeof (char *));
}
/* Add the new entry to the end of the filename table. */
- file_table[file_table_in_use] = xstrdup (file_name);
- last_file_lookup_index = file_table_in_use++;
+ file_table.table[i] = xstrdup (file_name);
+ file_table.in_use = i + 1;
+ file_table.last_lookup_index = i;
- return last_file_lookup_index;
+ if (DWARF2_ASM_LINE_DEBUG_INFO)
+ fprintf (asm_out_file, "\t.file %u \"%s\"\n", i, file_name);
+
+ return i;
+}
+
+static void
+init_file_table ()
+{
+ /* Allocate the initial hunk of the file_table. */
+ file_table.table = (char **) xcalloc (FILE_TABLE_INCREMENT, sizeof (char *));
+ file_table.allocated = FILE_TABLE_INCREMENT;
+
+ /* Skip the first entry - file numbers begin at 1. */
+ file_table.in_use = 1;
+ file_table.last_lookup_index = 0;
}
/* Output a label to mark the beginning of a source code line entry
and record information relating to this source line, in
'line_info_table' for later output of the .debug_line section. */
-void
-dwarf2out_line (filename, line)
+static void
+dwarf2out_source_line (line, filename)
+ unsigned int line;
register const char *filename;
- register unsigned line;
{
if (debug_info_level >= DINFO_LEVEL_NORMAL)
{
function_section (current_function_decl);
+ /* If requested, emit something human-readable. */
+ if (flag_debug_asm)
+ fprintf (asm_out_file, "\t%s %s:%d\n", ASM_COMMENT_START,
+ filename, line);
+
if (DWARF2_ASM_LINE_DEBUG_INFO)
{
- static const char *lastfile;
-
- /* Emit the .file and .loc directives understood by GNU as. */
- if (lastfile == 0 || strcmp (filename, lastfile))
- {
- if (lastfile == 0)
- ggc_add_string_root ((char **) &lastfile, 1);
-
- fprintf (asm_out_file, "\t.file 0 \"%s\"\n", filename);
- lastfile = filename;
- }
+ unsigned file_num = lookup_filename (filename);
- fprintf (asm_out_file, "\t.loc 0 %d 0\n", line);
+ /* Emit the .loc directive understood by GNU as. */
+ fprintf (asm_out_file, "\t.loc %d %d 0\n", file_num, line);
/* Indicate that line number info exists. */
++line_info_table_in_use;
register dw_separate_line_info_ref line_info;
ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, SEPARATE_LINE_CODE_LABEL,
separate_line_info_table_in_use);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s line %d", ASM_COMMENT_START, line);
- fputc ('\n', asm_out_file);
/* expand the line info table if necessary */
if (separate_line_info_table_in_use
ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, LINE_CODE_LABEL,
line_info_table_in_use);
- if (flag_debug_asm)
- fprintf (asm_out_file, "\t%s line %d", ASM_COMMENT_START, line);
- fputc ('\n', asm_out_file);
/* Expand the line info table if necessary. */
if (line_info_table_in_use == line_info_table_allocated)
}
}
-/* Record the beginning of a new source file, for later output
- of the .debug_macinfo section. At present, unimplemented. */
+/* Record the beginning of a new source file. */
-void
-dwarf2out_start_source_file (filename)
- register const char *filename ATTRIBUTE_UNUSED;
+static void
+dwarf2out_start_source_file (lineno, filename)
+ register unsigned int lineno;
+ register const char *filename;
{
if (flag_eliminate_dwarf2_dups)
{
dw_die_ref bincl_die = new_die (DW_TAG_GNU_BINCL, comp_unit_die);
add_AT_string (bincl_die, DW_AT_name, filename);
}
+ if (debug_info_level >= DINFO_LEVEL_VERBOSE)
+ {
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_MACINFO_SECTION);
+ dw2_asm_output_data (1, DW_MACINFO_start_file, "Start new file");
+ dw2_asm_output_data_uleb128 (lineno, "Included from line number %d", lineno);
+ dw2_asm_output_data_uleb128 (lookup_filename (filename), "Filename we just started");
+ }
}
-/* Record the end of a source file, for later output
- of the .debug_macinfo section. At present, unimplemented. */
+/* Record the end of a source file. */
-void
-dwarf2out_end_source_file ()
+static void
+dwarf2out_end_source_file (lineno)
+ unsigned int lineno ATTRIBUTE_UNUSED;
{
if (flag_eliminate_dwarf2_dups)
{
/* Record the end of the file for break_out_includes. */
new_die (DW_TAG_GNU_EINCL, comp_unit_die);
- }
+ }
+ if (debug_info_level >= DINFO_LEVEL_VERBOSE)
+ {
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_MACINFO_SECTION);
+ dw2_asm_output_data (1, DW_MACINFO_end_file, "End file");
+ }
}
-/* Called from check_newline in c-parse.y. The `buffer' parameter contains
+/* Called from debug_define in toplev.c. The `buffer' parameter contains
the tail part of the directive line, i.e. the part which is past the
initial whitespace, #, whitespace, directive-name, whitespace part. */
-void
+static void
dwarf2out_define (lineno, buffer)
register unsigned lineno ATTRIBUTE_UNUSED;
register const char *buffer ATTRIBUTE_UNUSED;
static int initialized = 0;
if (!initialized)
{
- dwarf2out_start_source_file (primary_filename);
+ dwarf2out_start_source_file (0, primary_filename);
initialized = 1;
}
+ if (debug_info_level >= DINFO_LEVEL_VERBOSE)
+ {
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_MACINFO_SECTION);
+ dw2_asm_output_data (1, DW_MACINFO_define, "Define macro");
+ dw2_asm_output_data_uleb128 (lineno, "At line number %d", lineno);
+ dw2_asm_output_nstring (buffer, -1, "The macro");
+ }
}
-/* Called from check_newline in c-parse.y. The `buffer' parameter contains
+/* Called from debug_undef in toplev.c. The `buffer' parameter contains
the tail part of the directive line, i.e. the part which is past the
initial whitespace, #, whitespace, directive-name, whitespace part. */
-void
+static void
dwarf2out_undef (lineno, buffer)
register unsigned lineno ATTRIBUTE_UNUSED;
register const char *buffer ATTRIBUTE_UNUSED;
{
+ if (debug_info_level >= DINFO_LEVEL_VERBOSE)
+ {
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_MACINFO_SECTION);
+ dw2_asm_output_data (1, DW_MACINFO_undef, "Undefine macro");
+ dw2_asm_output_data_uleb128 (lineno, "At line number %d", lineno);
+ dw2_asm_output_nstring (buffer, -1, "The macro");
+ }
}
/* Set up for Dwarf output at the start of compilation. */
-void
-dwarf2out_init (asm_out_file, main_input_filename)
- register FILE *asm_out_file;
+static void
+dwarf2out_init (main_input_filename)
register const char *main_input_filename;
{
+ init_file_table ();
+
/* Remember the name of the primary input file. */
primary_filename = main_input_filename;
- /* Allocate the initial hunk of the file_table. */
- file_table = (char **) xcalloc (FILE_TABLE_INCREMENT, sizeof (char *));
- file_table_allocated = FILE_TABLE_INCREMENT;
-
- /* Skip the first entry - file numbers begin at 1. */
- file_table_in_use = 1;
+ /* Add it to the file table first, under the assumption that we'll
+ be emitting line number data for it first, which avoids having
+ to add an initial DW_LNS_set_file. */
+ lookup_filename (main_input_filename);
/* Allocate the initial hunk of the decl_die_table. */
decl_die_table
invoked when the given (base) source file was compiled. */
comp_unit_die = gen_compile_unit_die (main_input_filename);
- if (ggc_p)
- {
- VARRAY_RTX_INIT (used_rtx_varray, 32, "used_rtx_varray");
- ggc_add_rtx_varray_root (&used_rtx_varray, 1);
- }
+ VARRAY_RTX_INIT (used_rtx_varray, 32, "used_rtx_varray");
+ ggc_add_rtx_varray_root (&used_rtx_varray, 1);
ASM_GENERATE_INTERNAL_LABEL (text_end_label, TEXT_END_LABEL, 0);
- ASM_GENERATE_INTERNAL_LABEL (abbrev_section_label, ABBREV_SECTION_LABEL, 0);
+ ASM_GENERATE_INTERNAL_LABEL (abbrev_section_label,
+ DEBUG_ABBREV_SECTION_LABEL, 0);
if (DWARF2_GENERATE_TEXT_SECTION_LABEL)
ASM_GENERATE_INTERNAL_LABEL (text_section_label, TEXT_SECTION_LABEL, 0);
else
DEBUG_INFO_SECTION_LABEL, 0);
ASM_GENERATE_INTERNAL_LABEL (debug_line_section_label,
DEBUG_LINE_SECTION_LABEL, 0);
-
- ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION);
+ ASM_GENERATE_INTERNAL_LABEL (loc_section_label, DEBUG_LOC_SECTION_LABEL, 0);
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LOC_SECTION);
+ ASM_OUTPUT_LABEL (asm_out_file, loc_section_label);
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_ABBREV_SECTION);
ASM_OUTPUT_LABEL (asm_out_file, abbrev_section_label);
if (DWARF2_GENERATE_TEXT_SECTION_LABEL)
{
ASM_OUTPUT_LABEL (asm_out_file, debug_info_section_label);
ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION);
ASM_OUTPUT_LABEL (asm_out_file, debug_line_section_label);
+ if (debug_info_level >= DINFO_LEVEL_VERBOSE)
+ {
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_MACINFO_SECTION);
+ ASM_GENERATE_INTERNAL_LABEL (macinfo_section_label,
+ DEBUG_MACINFO_SECTION_LABEL, 0);
+ ASM_OUTPUT_LABEL (asm_out_file, macinfo_section_label);
+ }
}
/* Output stuff that dwarf requires at the end of every file,
and generate the DWARF-2 debugging info. */
-void
-dwarf2out_finish ()
+static void
+dwarf2out_finish (input_filename)
+ register const char *input_filename ATTRIBUTE_UNUSED;
{
limbo_die_node *node, *next_node;
- dw_die_ref die;
+ dw_die_ref die = 0;
/* Traverse the limbo die list, and add parent/child links. The only
dies without parents that should be here are concrete instances of
add_sibling_attributes (node->die);
/* Output a terminator label for the .text section. */
- fputc ('\n', asm_out_file);
ASM_OUTPUT_SECTION (asm_out_file, TEXT_SECTION);
ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, TEXT_END_LABEL, 0);
#if 0
/* Output a terminator label for the .data section. */
- fputc ('\n', asm_out_file);
ASM_OUTPUT_SECTION (asm_out_file, DATA_SECTION);
ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, DATA_END_LABEL, 0);
/* Output a terminator label for the .bss section. */
- fputc ('\n', asm_out_file);
ASM_OUTPUT_SECTION (asm_out_file, BSS_SECTION);
ASM_OUTPUT_INTERNAL_LABEL (asm_out_file, BSS_END_LABEL, 0);
#endif
- /* Output the source line correspondence table. */
- if (line_info_table_in_use > 1 || separate_line_info_table_in_use)
+ /* Output the source line correspondence table. We must do this
+ even if there is no line information. Otherwise, on an empty
+ translation unit, we will generate a present, but empty,
+ .debug_info section. IRIX 6.5 `nm' will then complain when
+ examining the file. */
+ if (! DWARF2_ASM_LINE_DEBUG_INFO)
{
- if (! DWARF2_ASM_LINE_DEBUG_INFO)
- {
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION);
- output_line_info ();
- }
-
- /* We can only use the low/high_pc attributes if all of the code
- was in .text. */
- if (separate_line_info_table_in_use == 0)
- {
- add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, text_section_label);
- add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label);
- }
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LINE_SECTION);
+ output_line_info ();
+ }
- add_AT_lbl_offset (comp_unit_die, DW_AT_stmt_list,
- debug_line_section_label);
+ /* We can only use the low/high_pc attributes if all of the code was
+ in .text. */
+ if (separate_line_info_table_in_use == 0)
+ {
+ add_AT_lbl_id (comp_unit_die, DW_AT_low_pc, text_section_label);
+ add_AT_lbl_id (comp_unit_die, DW_AT_high_pc, text_end_label);
}
-#if 0 /* unimplemented */
- if (debug_info_level >= DINFO_LEVEL_VERBOSE && primary)
- add_AT_unsigned (die, DW_AT_macro_info, 0);
-#endif
+ if (debug_info_level >= DINFO_LEVEL_NORMAL)
+ add_AT_lbl_offset (comp_unit_die, DW_AT_stmt_list,
+ debug_line_section_label);
+
+ if (debug_info_level >= DINFO_LEVEL_VERBOSE)
+ add_AT_lbl_offset (comp_unit_die, DW_AT_macro_info, macinfo_section_label);
/* Output all of the compilation units. We put the main one last so that
the offsets are available to output_pubnames. */
output_comp_unit (comp_unit_die);
/* Output the abbreviation table. */
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_SECTION (asm_out_file, ABBREV_SECTION);
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_ABBREV_SECTION);
output_abbrev_section ();
if (pubname_table_in_use)
{
/* Output public names table. */
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_SECTION (asm_out_file, PUBNAMES_SECTION);
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_PUBNAMES_SECTION);
output_pubnames ();
}
if (fde_table_in_use)
{
/* Output the address range information. */
- fputc ('\n', asm_out_file);
- ASM_OUTPUT_SECTION (asm_out_file, ARANGES_SECTION);
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_ARANGES_SECTION);
output_aranges ();
}
+ /* Output location list section if necessary */
+ if (have_location_lists)
+ {
+ /* Output the location lists info. */
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_LOC_SECTION);
+ output_location_lists (die);
+ have_location_lists = 0;
+ }
+
+ /* Have to end the primary source file. */
+ if (debug_info_level >= DINFO_LEVEL_VERBOSE)
+ {
+ ASM_OUTPUT_SECTION (asm_out_file, DEBUG_MACINFO_SECTION);
+ dw2_asm_output_data (1, DW_MACINFO_end_file, "End file");
+ }
+
}
#endif /* DWARF2_DEBUGGING_INFO */
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