/* Dwarf2 assembler output helper routines.
- Copyright (C) 2001 Free Software Foundation, Inc.
+ Copyright (C) 2001, 2002, 2003, 2004, 2005 Free Software Foundation, Inc.
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+GCC is free software; you can redistribute it and/or modify it under
+the terms of the GNU General Public License as published by the Free
+Software Foundation; either version 2, or (at your option) any later
+version.
-GNU CC is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+GCC is distributed in the hope that it will be useful, but WITHOUT ANY
+WARRANTY; without even the implied warranty of MERCHANTABILITY or
+FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
+for more details.
You should have received a copy of the GNU General Public License
-along with GNU CC; see the file COPYING. If not, write to
-the Free Software Foundation, 59 Temple Place - Suite 330,
-Boston, MA 02111-1307, USA. */
+along with GCC; see the file COPYING. If not, write to the Free
+Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301, USA. */
#include "config.h"
#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "flags.h"
#include "tree.h"
#include "rtl.h"
#include "output.h"
+#include "target.h"
#include "dwarf2asm.h"
#include "dwarf2.h"
#include "splay-tree.h"
#define ASM_COMMENT_START ";#"
#endif
-/* 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. */
-#if !defined(UNALIGNED_INT_ASM_OP) && defined(DWARF2_DEBUGGING_INFO)
- #error DWARF2_DEBUGGING_INFO requires UNALIGNED_INT_ASM_OP.
-#endif
-
\f
-/* Despite the fact that assemble_integer handles unaligned data,
- continue emitting things by hand when possible, since that makes
- the assembler commentary come out prettier. */
-#ifdef UNALIGNED_INT_ASM_OP
-static const char * unaligned_integer_asm_op PARAMS ((int));
-
-static inline const char *
-unaligned_integer_asm_op (size)
- int size;
+/* Output an unaligned integer with the given value and size. Prefer not
+ to print a newline, since the caller may want to add a comment. */
+
+void
+dw2_assemble_integer (int size, rtx x)
{
- const char *op;
- switch (size)
+ const char *op = integer_asm_op (size, FALSE);
+
+ if (op)
{
- case 1:
- op = ASM_BYTE_OP;
- break;
- case 2:
- op = UNALIGNED_SHORT_ASM_OP;
- break;
- case 4:
- op = UNALIGNED_INT_ASM_OP;
- break;
- case 8:
-#ifdef UNALIGNED_DOUBLE_INT_ASM_OP
- op = UNALIGNED_DOUBLE_INT_ASM_OP;
- break;
-#endif
- default:
- abort ();
+ fputs (op, asm_out_file);
+ if (GET_CODE (x) == CONST_INT)
+ fprintf (asm_out_file, HOST_WIDE_INT_PRINT_HEX, INTVAL (x));
+ else
+ output_addr_const (asm_out_file, x);
}
- return op;
+ else
+ assemble_integer (x, size, BITS_PER_UNIT, 1);
}
-#endif /* UNALIGNED_INT_ASM_OP */
+
/* Output an immediate constant in a given size. */
void
-dw2_asm_output_data VPARAMS ((int size, unsigned HOST_WIDE_INT value,
- const char *comment, ...))
+dw2_asm_output_data (int size, unsigned HOST_WIDE_INT value,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- int size;
- unsigned HOST_WIDE_INT value;
- const char *comment;
-#endif
va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- size = va_arg (ap, int);
- value = va_arg (ap, unsigned HOST_WIDE_INT);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
if (size * 8 < HOST_BITS_PER_WIDE_INT)
- value &= ~(~(unsigned HOST_WIDE_INT)0 << (size * 8));
+ value &= ~(~(unsigned HOST_WIDE_INT) 0 << (size * 8));
-#ifdef UNALIGNED_INT_ASM_OP
- fputs (unaligned_integer_asm_op (size), asm_out_file);
- fprintf (asm_out_file, HOST_WIDE_INT_PRINT_HEX, value);
-#else
- assemble_integer (GEN_INT (value), size, BITS_PER_UNIT, 1);
-#endif
+ dw2_assemble_integer (size, GEN_INT (value));
if (flag_debug_asm && comment)
{
symbol must appear after both symbols are defined. */
void
-dw2_asm_output_delta VPARAMS ((int size, const char *lab1, const char *lab2,
- const char *comment, ...))
+dw2_asm_output_delta (int size, const char *lab1, const char *lab2,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- int size;
- const char *lab1, *lab2;
- const char *comment;
-#endif
va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- size = va_arg (ap, int);
- lab1 = va_arg (ap, const char *);
- lab2 = va_arg (ap, const char *);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
-#ifdef UNALIGNED_INT_ASM_OP
- fputs (unaligned_integer_asm_op (size), asm_out_file);
- assemble_name (asm_out_file, lab1);
- fputc ('-', asm_out_file);
- assemble_name (asm_out_file, lab2);
+#ifdef ASM_OUTPUT_DWARF_DELTA
+ ASM_OUTPUT_DWARF_DELTA (asm_out_file, size, lab1, lab2);
#else
- assemble_integer (gen_rtx_MINUS (Pmode, gen_rtx_SYMBOL_REF (Pmode, lab1),
- gen_rtx_SYMBOL_REF (Pmode, lab2)),
- size, BITS_PER_UNIT, 1);
+ dw2_assemble_integer (size,
+ gen_rtx_MINUS (Pmode,
+ gen_rtx_SYMBOL_REF (Pmode, lab1),
+ gen_rtx_SYMBOL_REF (Pmode, lab2)));
#endif
-
if (flag_debug_asm && comment)
{
fprintf (asm_out_file, "\t%s ", ASM_COMMENT_START);
va_end (ap);
}
-/* Output a section-relative reference to a label. In general this
- can only be done for debugging symbols. E.g. on most targets with
- the GNU linker, this is accomplished with a direct reference and
- the knowledge that the debugging section will be placed at VMA 0.
- Some targets have special relocations for this that we must use. */
+/* Output a section-relative reference to a LABEL, which was placed in
+ BASE. In general this can only be done for debugging symbols.
+ E.g. on most targets with the GNU linker, this is accomplished with
+ a direct reference and the knowledge that the debugging section
+ will be placed at VMA 0. Some targets have special relocations for
+ this that we must use. */
void
-dw2_asm_output_offset VPARAMS ((int size, const char *label,
- const char *comment, ...))
+dw2_asm_output_offset (int size, const char *label,
+ section *base ATTRIBUTE_UNUSED,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- int size;
- const char *label;
- const char *comment;
-#endif
va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- size = va_arg (ap, int);
- label = va_arg (ap, const char *);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
#ifdef ASM_OUTPUT_DWARF_OFFSET
- ASM_OUTPUT_DWARF_OFFSET (asm_out_file, size, label);
-#else
-#ifdef UNALIGNED_INT_ASM_OP
- fputs (unaligned_integer_asm_op (size), asm_out_file);
- assemble_name (asm_out_file, label);
+ ASM_OUTPUT_DWARF_OFFSET (asm_out_file, size, label, base);
#else
- assemble_integer (gen_rtx_SYMBOL_REF (Pmode, label), size, BITS_PER_UNIT, 1);
-#endif
+ dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label));
#endif
if (flag_debug_asm && comment)
va_end (ap);
}
+#if 0
+
/* Output a self-relative reference to a label, possibly in a
different section or object file. */
void
-dw2_asm_output_pcrel VPARAMS ((int size, const char *label,
- const char *comment, ...))
+dw2_asm_output_pcrel (int size ATTRIBUTE_UNUSED,
+ const char *label ATTRIBUTE_UNUSED,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- int size;
- const char *label;
- const char *comment;
-#endif
va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- size = va_arg (ap, int);
- label = va_arg (ap, const char *);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
#ifdef ASM_OUTPUT_DWARF_PCREL
ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, label);
#else
-#ifdef UNALIGNED_INT_ASM_OP
- fputs (unaligned_integer_asm_op (size), asm_out_file);
- assemble_name (asm_out_file, label);
- fputc ('-', asm_out_file);
- fputc ('.', asm_out_file);
-#else
- abort ();
-#endif
+ dw2_assemble_integer (size,
+ gen_rtx_MINUS (Pmode,
+ gen_rtx_SYMBOL_REF (Pmode, label),
+ pc_rtx));
#endif
if (flag_debug_asm && comment)
va_end (ap);
}
+#endif /* 0 */
/* Output an absolute reference to a label. */
void
-dw2_asm_output_addr VPARAMS ((int size, const char *label,
- const char *comment, ...))
+dw2_asm_output_addr (int size, const char *label,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- int size;
- const char *label;
- const char *comment;
-#endif
va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- size = va_arg (ap, int);
- label = va_arg (ap, const char *);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
-#ifdef UNALIGNED_INT_ASM_OP
- fputs (unaligned_integer_asm_op (size), asm_out_file);
- assemble_name (asm_out_file, label);
-#else
- assemble_integer (gen_rtx_SYMBOL_REF (Pmode, label), size, BITS_PER_UNIT, 1);
-#endif
+ dw2_assemble_integer (size, gen_rtx_SYMBOL_REF (Pmode, label));
if (flag_debug_asm && comment)
{
/* Similar, but use an RTX expression instead of a text label. */
void
-dw2_asm_output_addr_rtx VPARAMS ((int size, rtx addr,
- const char *comment, ...))
+dw2_asm_output_addr_rtx (int size, rtx addr,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- int size;
- rtx addr;
- const char *comment;
-#endif
va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- size = va_arg (ap, int);
- addr = va_arg (ap, rtx);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
-#ifdef UNALIGNED_INT_ASM_OP
- fputs (unaligned_integer_asm_op (size), asm_out_file);
- output_addr_const (asm_out_file, addr);
-#else
- assemble_integer (addr, size, BITS_PER_UNIT, 1);
-#endif
+ dw2_assemble_integer (size, addr);
if (flag_debug_asm && comment)
{
va_end (ap);
}
+/* Output the first ORIG_LEN characters of STR as a string.
+ If ORIG_LEN is equal to -1, ignore this parameter and output
+ the entire STR instead.
+ If COMMENT is not NULL and comments in the debug information
+ have been requested by the user, append the given COMMENT
+ to the generated output. */
+
void
-dw2_asm_output_nstring VPARAMS ((const char *str, size_t orig_len,
- const char *comment, ...))
+dw2_asm_output_nstring (const char *str, size_t orig_len,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- const char *str;
- size_t orig_len;
- const char *comment;
-#endif
+ size_t i, len;
va_list ap;
- size_t i, len = orig_len;
- VA_START (ap, comment);
+ va_start (ap, comment);
-#ifndef ANSI_PROTOTYPES
- str = va_arg (ap, const char *);
- len = va_arg (ap, size_t);
- comment = va_arg (ap, const char *);
-#endif
+ len = orig_len;
if (len == (size_t) -1)
len = strlen (str);
len += 1;
ASM_OUTPUT_ASCII (asm_out_file, str, len);
if (orig_len != (size_t) -1)
- fprintf (asm_out_file, "%s0\n", ASM_BYTE_OP);
+ assemble_integer (const0_rtx, 1, BITS_PER_UNIT, 1);
}
va_end (ap);
/* Return the size of an unsigned LEB128 quantity. */
int
-size_of_uleb128 (value)
- unsigned HOST_WIDE_INT value;
+size_of_uleb128 (unsigned HOST_WIDE_INT value)
{
- int size = 0, byte;
+ int size = 0;
do
{
- byte = (value & 0x7f);
value >>= 7;
size += 1;
}
/* Return the size of a signed LEB128 quantity. */
int
-size_of_sleb128 (value)
- HOST_WIDE_INT value;
+size_of_sleb128 (HOST_WIDE_INT value)
{
int size = 0, byte;
}
/* Given an encoding, return the number of bytes the format occupies.
- This is only defined for fixed-size encodings, and so does not
+ This is only defined for fixed-size encodings, and so does not
include leb128. */
int
-size_of_encoded_value (encoding)
- int encoding;
+size_of_encoded_value (int encoding)
{
if (encoding == DW_EH_PE_omit)
return 0;
return 4;
case DW_EH_PE_udata8:
return 8;
+ default:
+ gcc_unreachable ();
}
- abort ();
}
/* Yield a name for a given pointer encoding. */
const char *
-eh_data_format_name (format)
- int format;
+eh_data_format_name (int format)
{
#if HAVE_DESIGNATED_INITIALIZERS
#define S(p, v) [p] = v,
#if HAVE_DESIGNATED_INITIALIZERS
};
- if (format < 0 || format > 0xff || format_names[format] == NULL)
- abort ();
+ gcc_assert (format >= 0 && format < 0x100 && format_names[format]);
+
return format_names[format];
#else
}
- abort ();
+ gcc_unreachable ();
#endif
}
/* Output an unsigned LEB128 quantity. */
void
-dw2_asm_output_data_uleb128 VPARAMS ((unsigned HOST_WIDE_INT value,
- const char *comment, ...))
+dw2_asm_output_data_uleb128 (unsigned HOST_WIDE_INT value,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- unsigned HOST_WIDE_INT value;
- const char *comment;
-#endif
va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- value = va_arg (ap, unsigned HOST_WIDE_INT);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
#ifdef HAVE_AS_LEB128
- fputs ("\t.uleb128 ", asm_out_file);
- fprintf (asm_out_file, HOST_WIDE_INT_PRINT_HEX, value);
+ fprintf (asm_out_file, "\t.uleb128 " HOST_WIDE_INT_PRINT_HEX , value);
if (flag_debug_asm && comment)
{
#else
{
unsigned HOST_WIDE_INT work = value;
+ const char *byte_op = targetm.asm_out.byte_op;
- fputs (ASM_BYTE_OP, asm_out_file);
+ if (byte_op)
+ fputs (byte_op, asm_out_file);
do
{
int byte = (work & 0x7f);
/* More bytes to follow. */
byte |= 0x80;
- fprintf (asm_out_file, "0x%x", byte);
- if (work != 0)
- fputc (',', asm_out_file);
+ if (byte_op)
+ {
+ fprintf (asm_out_file, "0x%x", byte);
+ if (work != 0)
+ fputc (',', asm_out_file);
+ }
+ else
+ assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1);
}
while (work != 0);
if (flag_debug_asm)
{
- fprintf (asm_out_file, "\t%s uleb128 ", ASM_COMMENT_START);
- fprintf (asm_out_file, HOST_WIDE_INT_PRINT_HEX, value);
+ fprintf (asm_out_file, "\t%s uleb128 " HOST_WIDE_INT_PRINT_HEX,
+ ASM_COMMENT_START, value);
if (comment)
{
fputs ("; ", asm_out_file);
va_end (ap);
}
-/* Output an signed LEB128 quantity. */
+/* Output a signed LEB128 quantity. */
void
-dw2_asm_output_data_sleb128 VPARAMS ((HOST_WIDE_INT value,
- const char *comment, ...))
+dw2_asm_output_data_sleb128 (HOST_WIDE_INT value,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- HOST_WIDE_INT value;
- const char *comment;
-#endif
va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- value = va_arg (ap, HOST_WIDE_INT);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
#ifdef HAVE_AS_LEB128
- fputs ("\t.sleb128 ", asm_out_file);
- fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, value);
+ fprintf (asm_out_file, "\t.sleb128 " HOST_WIDE_INT_PRINT_DEC, value);
if (flag_debug_asm && comment)
{
{
HOST_WIDE_INT work = value;
int more, byte;
+ const char *byte_op = targetm.asm_out.byte_op;
- fputs (ASM_BYTE_OP, asm_out_file);
+ if (byte_op)
+ fputs (byte_op, asm_out_file);
do
{
byte = (work & 0x7f);
if (more)
byte |= 0x80;
- fprintf (asm_out_file, "0x%x", byte);
- if (more)
- fputc (',', asm_out_file);
+ if (byte_op)
+ {
+ fprintf (asm_out_file, "0x%x", byte);
+ if (more)
+ fputc (',', asm_out_file);
+ }
+ else
+ assemble_integer (GEN_INT (byte), 1, BITS_PER_UNIT, 1);
}
while (more);
if (flag_debug_asm)
{
- fprintf (asm_out_file, "\t%s sleb128 ", ASM_COMMENT_START);
- fprintf (asm_out_file, HOST_WIDE_INT_PRINT_DEC, value);
+ fprintf (asm_out_file, "\t%s sleb128 " HOST_WIDE_INT_PRINT_DEC,
+ ASM_COMMENT_START, value);
if (comment)
{
fputs ("; ", asm_out_file);
}
void
-dw2_asm_output_delta_uleb128 VPARAMS ((const char *lab1 ATTRIBUTE_UNUSED,
- const char *lab2 ATTRIBUTE_UNUSED,
- const char *comment, ...))
+dw2_asm_output_delta_uleb128 (const char *lab1 ATTRIBUTE_UNUSED,
+ const char *lab2 ATTRIBUTE_UNUSED,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- const char *lab1, *lab2;
- const char *comment;
-#endif
va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- lab1 = va_arg (ap, const char *);
- lab2 = va_arg (ap, const char *);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
#ifdef HAVE_AS_LEB128
fputs ("\t.uleb128 ", asm_out_file);
fputc ('-', asm_out_file);
assemble_name (asm_out_file, lab2);
#else
- abort ();
+ gcc_unreachable ();
#endif
if (flag_debug_asm && comment)
va_end (ap);
}
+#if 0
+
void
-dw2_asm_output_delta_sleb128 VPARAMS ((const char *lab1 ATTRIBUTE_UNUSED,
- const char *lab2 ATTRIBUTE_UNUSED,
- const char *comment, ...))
+dw2_asm_output_delta_sleb128 (const char *lab1 ATTRIBUTE_UNUSED,
+ const char *lab2 ATTRIBUTE_UNUSED,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- const char *lab1, *lab2;
- const char *comment;
-#endif
va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- lab1 = va_arg (ap, const char *);
- lab2 = va_arg (ap, const char *);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
#ifdef HAVE_AS_LEB128
fputs ("\t.sleb128 ", asm_out_file);
fputc ('-', asm_out_file);
assemble_name (asm_out_file, lab2);
#else
- abort ();
+ gcc_unreachable ();
#endif
if (flag_debug_asm && comment)
va_end (ap);
}
+#endif /* 0 */
\f
-static rtx dw2_force_const_mem PARAMS ((rtx));
-static int dw2_output_indirect_constant_1 PARAMS ((splay_tree_node, void *));
+static rtx dw2_force_const_mem (rtx, bool);
+static int dw2_output_indirect_constant_1 (splay_tree_node, void *);
+
+static GTY((param1_is (char *), param2_is (tree))) splay_tree indirect_pool;
-static splay_tree indirect_pool;
+static GTY(()) int dw2_const_labelno;
+
+#if defined(HAVE_GAS_HIDDEN) && defined(SUPPORTS_ONE_ONLY)
+# define USE_LINKONCE_INDIRECT 1
+#else
+# define USE_LINKONCE_INDIRECT 0
+#endif
/* Put X, a SYMBOL_REF, in memory. Return a SYMBOL_REF to the allocated
memory. Differs from force_const_mem in that a single pool is used for
the entire unit of translation, and the memory is not guaranteed to be
- "near" the function in any interesting sense. */
+ "near" the function in any interesting sense. PUBLIC controls whether
+ the symbol can be shared across the entire application (or DSO). */
static rtx
-dw2_force_const_mem (x)
- rtx x;
+dw2_force_const_mem (rtx x, bool public)
{
splay_tree_node node;
- const char *const_sym;
+ const char *str;
+ tree decl;
if (! indirect_pool)
- indirect_pool = splay_tree_new (splay_tree_compare_pointers, NULL, NULL);
+ indirect_pool = splay_tree_new_ggc (splay_tree_compare_pointers);
+
+ gcc_assert (GET_CODE (x) == SYMBOL_REF);
- if (GET_CODE (x) != SYMBOL_REF)
- abort ();
- node = splay_tree_lookup (indirect_pool, (splay_tree_key) XSTR (x, 0));
+ str = targetm.strip_name_encoding (XSTR (x, 0));
+ node = splay_tree_lookup (indirect_pool, (splay_tree_key) str);
if (node)
- const_sym = (const char *) node->value;
+ decl = (tree) node->value;
else
{
- extern int const_labelno;
- char label[32];
tree id;
- ASM_GENERATE_INTERNAL_LABEL (label, "LC", const_labelno);
- ++const_labelno;
- const_sym = ggc_strdup (label);
+ if (public && USE_LINKONCE_INDIRECT)
+ {
+ char *ref_name = alloca (strlen (str) + sizeof "DW.ref.");
+
+ sprintf (ref_name, "DW.ref.%s", str);
+ id = get_identifier (ref_name);
+ decl = build_decl (VAR_DECL, id, ptr_type_node);
+ DECL_ARTIFICIAL (decl) = 1;
+ DECL_IGNORED_P (decl) = 1;
+ TREE_PUBLIC (decl) = 1;
+ DECL_INITIAL (decl) = decl;
+ make_decl_one_only (decl);
+ }
+ else
+ {
+ char label[32];
+
+ ASM_GENERATE_INTERNAL_LABEL (label, "LDFCM", dw2_const_labelno);
+ ++dw2_const_labelno;
+ id = get_identifier (label);
+ decl = build_decl (VAR_DECL, id, ptr_type_node);
+ DECL_ARTIFICIAL (decl) = 1;
+ DECL_IGNORED_P (decl) = 1;
+ TREE_STATIC (decl) = 1;
+ DECL_INITIAL (decl) = decl;
+ }
- id = maybe_get_identifier (XSTR (x, 0));
+ id = maybe_get_identifier (str);
if (id)
TREE_SYMBOL_REFERENCED (id) = 1;
- splay_tree_insert (indirect_pool, (splay_tree_key) XSTR (x, 0),
- (splay_tree_value) const_sym);
+ splay_tree_insert (indirect_pool, (splay_tree_key) str,
+ (splay_tree_value) decl);
}
- return gen_rtx_SYMBOL_REF (Pmode, const_sym);
+ return XEXP (DECL_RTL (decl), 0);
}
/* A helper function for dw2_output_indirect_constants called through
splay_tree_foreach. Emit one queued constant to memory. */
static int
-dw2_output_indirect_constant_1 (node, data)
- splay_tree_node node;
- void* data ATTRIBUTE_UNUSED;
+dw2_output_indirect_constant_1 (splay_tree_node node,
+ void *data ATTRIBUTE_UNUSED)
{
- const char *label, *sym;
+ const char *sym;
rtx sym_ref;
+ tree decl;
- label = (const char *) node->value;
sym = (const char *) node->key;
+ decl = (tree) node->value;
sym_ref = gen_rtx_SYMBOL_REF (Pmode, sym);
-
- ASM_OUTPUT_LABEL (asm_out_file, label);
+ if (TREE_PUBLIC (decl) && USE_LINKONCE_INDIRECT)
+ fprintf (asm_out_file, "\t.hidden %sDW.ref.%s\n", user_label_prefix, sym);
+ assemble_variable (decl, 1, 1, 1);
assemble_integer (sym_ref, POINTER_SIZE / BITS_PER_UNIT, POINTER_SIZE, 1);
return 0;
/* Emit the constants queued through dw2_force_const_mem. */
void
-dw2_output_indirect_constants ()
+dw2_output_indirect_constants (void)
{
- if (! indirect_pool)
- return;
-
- /* Assume that the whole reason we're emitting these symbol references
- indirectly is that they contain dynamic relocations, and are thus
- read-write. If there was no possibility of a dynamic relocation, we
- might as well have used a direct relocation. */
- data_section ();
-
- /* Everything we're emitting is a pointer. Align appropriately. */
- assemble_align (POINTER_SIZE);
-
- splay_tree_foreach (indirect_pool, dw2_output_indirect_constant_1, NULL);
+ if (indirect_pool)
+ splay_tree_foreach (indirect_pool, dw2_output_indirect_constant_1, NULL);
}
-/* Like dw2_asm_output_addr_rtx, but encode the pointer as directed. */
+/* Like dw2_asm_output_addr_rtx, but encode the pointer as directed.
+ If PUBLIC is set and the encoding is DW_EH_PE_indirect, the indirect
+ reference is shared across the entire application (or DSO). */
void
-dw2_asm_output_encoded_addr_rtx VPARAMS ((int encoding,
- rtx addr,
- const char *comment, ...))
+dw2_asm_output_encoded_addr_rtx (int encoding, rtx addr, bool public,
+ const char *comment, ...)
{
-#ifndef ANSI_PROTOTYPES
- int encoding;
- rtx addr;
- const char *comment;
-#endif
- va_list ap;
int size;
+ va_list ap;
- VA_START (ap, comment);
-
-#ifndef ANSI_PROTOTYPES
- encoding = va_arg (ap, int);
- addr = va_arg (ap, rtx);
- comment = va_arg (ap, const char *);
-#endif
+ va_start (ap, comment);
size = size_of_encoded_value (encoding);
if (encoding == DW_EH_PE_aligned)
{
assemble_align (POINTER_SIZE);
- encoding = DW_EH_PE_absptr;
+ assemble_integer (addr, size, POINTER_SIZE, 1);
+ return;
}
- /* NULL is _always_ represented as a plain zero. */
- if (addr == const0_rtx)
+ /* NULL is _always_ represented as a plain zero, as is 1 for Ada's
+ "all others". */
+ if (addr == const0_rtx || addr == const1_rtx)
assemble_integer (addr, size, BITS_PER_UNIT, 1);
else
{
restart:
/* Allow the target first crack at emitting this. Some of the
- special relocations require special directives instead of
+ special relocations require special directives instead of
just ".4byte" or whatever. */
#ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX (asm_out_file, encoding, size,
/* It is very tempting to use force_const_mem so that we share data
with the normal constant pool. However, we've already emitted
the constant pool for this function. Moreover, we'd like to
- share these constants across the entire unit of translation,
- or better, across the entire application (or DSO). */
- addr = dw2_force_const_mem (addr);
+ share these constants across the entire unit of translation and
+ even, if possible, across the entire application (or DSO). */
+ addr = dw2_force_const_mem (addr, public);
encoding &= ~DW_EH_PE_indirect;
goto restart;
}
switch (encoding & 0xF0)
{
case DW_EH_PE_absptr:
-#ifdef UNALIGNED_INT_ASM_OP
- fputs (unaligned_integer_asm_op (size), asm_out_file);
- output_addr_const (asm_out_file, addr);
-#else
- assemble_integer (addr, size, BITS_PER_UNIT, 1);
-#endif
+ dw2_assemble_integer (size, addr);
break;
case DW_EH_PE_pcrel:
- if (GET_CODE (addr) != SYMBOL_REF)
- abort ();
+ gcc_assert (GET_CODE (addr) == SYMBOL_REF);
#ifdef ASM_OUTPUT_DWARF_PCREL
ASM_OUTPUT_DWARF_PCREL (asm_out_file, size, XSTR (addr, 0));
#else
-#ifdef UNALIGNED_INT_ASM_OP
- fputs (unaligned_integer_asm_op (size), asm_out_file);
- assemble_name (asm_out_file, XSTR (addr, 0));
- fputc ('-', asm_out_file);
- fputc ('.', asm_out_file);
-#else
- abort ();
-#endif
+ dw2_assemble_integer (size, gen_rtx_MINUS (Pmode, addr, pc_rtx));
#endif
break;
default:
- /* Other encodings should have been handled by
+ /* Other encodings should have been handled by
ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX. */
- abort ();
+ gcc_unreachable ();
}
#ifdef ASM_MAYBE_OUTPUT_ENCODED_ADDR_RTX
va_end (ap);
}
+
+#include "gt-dwarf2asm.h"
OSDN Git Service
