/* Output dbx-format symbol table information from GNU compiler.
Copyright (C) 1987, 1988, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006
- Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
+ 2011 Free Software Foundation, Inc.
This file is part of GCC.
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
+Software Foundation; either version 3, or (at your option) any later
version.
GCC is distributed in the hope that it will be useful, but WITHOUT ANY
for more details.
You should have received a copy of the GNU General Public License
-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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
/* Output dbx-format symbol table data.
#include "reload.h"
#include "output.h"
#include "dbxout.h"
+#include "diagnostic-core.h"
#include "toplev.h"
#include "tm_p.h"
#include "ggc.h"
#include "langhooks.h"
#include "obstack.h"
#include "expr.h"
+#include "cgraph.h"
#ifdef XCOFF_DEBUGGING_INFO
#include "xcoffout.h"
The file_number and type_number elements are used if DBX_USE_BINCL
is defined. */
-struct typeinfo GTY(())
-{
+struct GTY(()) typeinfo {
enum typestatus status;
int file_number;
int type_number;
struct dbx_file *prev; /* Chain to traverse all pending bincls. */
};
-/* This is the top of the stack.
-
+/* This is the top of the stack.
+
This is not saved for PCH, because restoring a PCH should not change it.
next_file_number does have to be saved, because the PCH may use some
file numbers; however, just before restoring a PCH, next_file_number
#include "gstab.h"
-#define STAB_CODE_TYPE enum __stab_debug_code
-
/* 1 if PARM is passed to this function in memory. */
#define PARM_PASSED_IN_MEMORY(PARM) \
#endif
/* A C expression for the integer offset value of an argument (N_PSYM)
- having address X (an RTX). The nominal offset is OFFSET. */
+ having address X (an RTX). The nominal offset is OFFSET.
+ Note that we use OFFSET + 0 here to avoid the self-assign warning
+ when the macro is called in a context like
+ number = DEBUGGER_ARG_OFFSET(number, X) */
#ifndef DEBUGGER_ARG_OFFSET
-#define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
+#define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET + 0)
#endif
/* This obstack holds the stab string currently being constructed. We
static inline void emit_pending_bincls_if_required (void);
static void dbxout_init (const char *);
-
+
static void dbxout_finish (const char *);
static void dbxout_start_source_file (unsigned, const char *);
static void dbxout_end_source_file (unsigned);
static void dbxout_type_fields (tree);
static void dbxout_type_method_1 (tree);
static void dbxout_type_methods (tree);
-static void dbxout_range_type (tree);
+static void dbxout_range_type (tree, tree, tree);
static void dbxout_type (tree, int);
-static bool print_int_cst_bounds_in_octal_p (tree);
+static bool print_int_cst_bounds_in_octal_p (tree, tree, tree);
+static bool is_fortran (void);
static void dbxout_type_name (tree);
static void dbxout_class_name_qualifiers (tree);
static int dbxout_symbol_location (tree, tree, const char *, rtx);
static void dbxout_symbol_name (tree, const char *, int);
-static void dbxout_block (tree, int, tree);
+static void dbxout_common_name (tree, const char *, stab_code_type);
+static const char *dbxout_common_check (tree, int *);
static void dbxout_global_decl (tree);
static void dbxout_type_decl (tree, int);
static void dbxout_handle_pch (unsigned);
/* The debug hooks structure. */
#if defined (DBX_DEBUGGING_INFO)
-static void dbxout_source_line (unsigned int, const char *);
+static void dbxout_source_line (unsigned int, const char *, int, bool);
static void dbxout_begin_prologue (unsigned int, const char *);
static void dbxout_source_file (const char *);
static void dbxout_function_end (tree);
{
dbxout_init,
dbxout_finish,
+ debug_nothing_void,
debug_nothing_int_charstar,
debug_nothing_int_charstar,
dbxout_start_source_file,
dbxout_end_source_file,
dbxout_begin_block,
dbxout_end_block,
- debug_true_tree, /* ignore_block */
+ debug_true_const_tree, /* ignore_block */
dbxout_source_line, /* source_line */
dbxout_begin_prologue, /* begin_prologue */
debug_nothing_int_charstar, /* end_prologue */
+ debug_nothing_int_charstar, /* begin_epilogue */
debug_nothing_int_charstar, /* end_epilogue */
#ifdef DBX_FUNCTION_FIRST
dbxout_begin_function,
dbxout_function_decl,
dbxout_global_decl, /* global_decl */
dbxout_type_decl, /* type_decl */
- debug_nothing_tree_tree, /* imported_module_or_decl */
+ debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */
debug_nothing_tree, /* deferred_inline_function */
debug_nothing_tree, /* outlining_inline_function */
debug_nothing_rtx, /* label */
dbxout_handle_pch, /* handle_pch */
debug_nothing_rtx, /* var_location */
debug_nothing_void, /* switch_text_section */
- 0 /* start_end_main_source_file */
+ debug_nothing_tree, /* direct_call */
+ debug_nothing_tree_int, /* virtual_call_token */
+ debug_nothing_rtx_rtx, /* copy_call_info */
+ debug_nothing_uid, /* virtual_call */
+ debug_nothing_tree_tree, /* set_name */
+ 0, /* start_end_main_source_file */
+ TYPE_SYMTAB_IS_ADDRESS /* tree_type_symtab_field */
};
#endif /* DBX_DEBUGGING_INFO */
{
dbxout_init,
dbxout_finish,
+ debug_nothing_void,
debug_nothing_int_charstar,
debug_nothing_int_charstar,
dbxout_start_source_file,
dbxout_end_source_file,
xcoffout_begin_block,
xcoffout_end_block,
- debug_true_tree, /* ignore_block */
+ debug_true_const_tree, /* ignore_block */
xcoffout_source_line,
xcoffout_begin_prologue, /* begin_prologue */
debug_nothing_int_charstar, /* end_prologue */
+ debug_nothing_int_charstar, /* begin_epilogue */
xcoffout_end_epilogue,
debug_nothing_tree, /* begin_function */
xcoffout_end_function,
debug_nothing_tree, /* function_decl */
dbxout_global_decl, /* global_decl */
dbxout_type_decl, /* type_decl */
- debug_nothing_tree_tree, /* imported_module_or_decl */
+ debug_nothing_tree_tree_tree_bool, /* imported_module_or_decl */
debug_nothing_tree, /* deferred_inline_function */
debug_nothing_tree, /* outlining_inline_function */
debug_nothing_rtx, /* label */
dbxout_handle_pch, /* handle_pch */
debug_nothing_rtx, /* var_location */
debug_nothing_void, /* switch_text_section */
- 0 /* start_end_main_source_file */
+ debug_nothing_tree, /* direct_call */
+ debug_nothing_tree_int, /* virtual_call_token */
+ debug_nothing_rtx_rtx, /* copy_call_info */
+ debug_nothing_uid, /* virtual_call */
+ debug_nothing_tree_tree, /* set_name */
+ 0, /* start_end_main_source_file */
+ TYPE_SYMTAB_IS_ADDRESS /* tree_type_symtab_field */
};
#endif /* XCOFF_DEBUGGING_INFO */
\f
SYM is the DECL of the symbol under consideration; it is used only
for its DECL_SOURCE_LINE. The other arguments are all passed directly
to DBX_FINISH_STABS; see above for details. */
-
+
static void
-dbxout_finish_complex_stabs (tree sym, STAB_CODE_TYPE code,
+dbxout_finish_complex_stabs (tree sym, stab_code_type code,
rtx addr, const char *label, int number)
{
int line ATTRIBUTE_UNUSED;
obstack_grow (&stabstr_ob, "\",", 2);
len = obstack_object_size (&stabstr_ob);
str = XOBFINISH (&stabstr_ob, char *);
-
+
fwrite (str, 1, len, asm_out_file);
DBX_FINISH_STABS (sym, code, line, addr, label, number);
}
#if defined (DBX_DEBUGGING_INFO)
static void
-dbxout_function_end (tree decl)
+dbxout_function_end (tree decl ATTRIBUTE_UNUSED)
{
char lscope_label_name[100];
/* The Lscope label must be emitted even if we aren't doing anything
else; dbxout_block needs it. */
switch_to_section (function_section (current_function_decl));
-
+
/* Convert Lscope into the appropriate format for local labels in case
the system doesn't insert underscores in front of user generated
labels. */
ASM_GENERATE_INTERNAL_LABEL (lscope_label_name, "Lscope", scope_labelno);
targetm.asm_out.internal_label (asm_out_file, "Lscope", scope_labelno);
- scope_labelno++;
/* The N_FUN tag at the end of the function is a GNU extension,
which may be undesirable, and is unnecessary if we do not have
named sections. */
if (!use_gnu_debug_info_extensions
|| NO_DBX_FUNCTION_END
- || !targetm.have_named_sections
- || DECL_IGNORED_P (decl))
+ || !targetm.have_named_sections)
return;
/* By convention, GCC will mark the end of a function with an N_FUN
symbol and an empty string. */
-#ifdef DBX_OUTPUT_NFUN
- DBX_OUTPUT_NFUN (asm_out_file, lscope_label_name, current_function_decl);
-#else
if (flag_reorder_blocks_and_partition)
{
dbxout_begin_empty_stabs (N_FUN);
- dbxout_stab_value_label_diff (cfun->hot_section_end_label,
- cfun->hot_section_label);
+ dbxout_stab_value_label_diff (crtl->subsections.hot_section_end_label,
+ crtl->subsections.hot_section_label);
dbxout_begin_empty_stabs (N_FUN);
- dbxout_stab_value_label_diff (cfun->cold_section_end_label,
- cfun->cold_section_label);
+ dbxout_stab_value_label_diff (crtl->subsections.cold_section_end_label,
+ crtl->subsections.cold_section_label);
}
else
{
+ char begin_label[20];
+ /* Reference current function start using LFBB. */
+ ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno);
dbxout_begin_empty_stabs (N_FUN);
- dbxout_stab_value_label_diff (lscope_label_name,
- XSTR (XEXP (DECL_RTL (current_function_decl),
- 0), 0));
+ dbxout_stab_value_label_diff (lscope_label_name, begin_label);
}
-
-#endif
if (!NO_DBX_BNSYM_ENSYM && !flag_debug_only_used_symbols)
dbxout_stabd (N_ENSYM, 0);
return N_SO_CC;
else if (strcmp (language_string, "GNU F77") == 0)
return N_SO_FORTRAN;
- else if (strcmp (language_string, "GNU F95") == 0)
+ else if (strcmp (language_string, "GNU Fortran") == 0)
return N_SO_FORTRAN90; /* CHECKME */
else if (strcmp (language_string, "GNU Pascal") == 0)
return N_SO_PASCAL;
}
+static bool
+is_fortran (void)
+{
+ unsigned int lang = get_lang_number ();
+
+ return (lang == N_SO_FORTRAN) || (lang == N_SO_FORTRAN90);
+}
+
/* At the beginning of compilation, start writing the symbol table.
Initialize `typevec' and output the standard data types of C. */
char ltext_label_name[100];
bool used_ltext_label_name = false;
tree syms = lang_hooks.decls.getdecls ();
+ const char *mapped_name;
typevec_len = 100;
- typevec = ggc_calloc (typevec_len, sizeof typevec[0]);
+ typevec = ggc_alloc_cleared_vec_typeinfo (typevec_len);
/* stabstr_ob contains one string, which will be just fine with
1-byte alignment. */
cwd = "/";
else if (!IS_DIR_SEPARATOR (cwd[strlen (cwd) - 1]))
cwd = concat (cwd, "/", NULL);
+ cwd = remap_debug_filename (cwd);
}
#ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY
DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (asm_out_file, cwd);
#endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */
}
+ mapped_name = remap_debug_filename (input_file_name);
#ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME
- DBX_OUTPUT_MAIN_SOURCE_FILENAME (asm_out_file, input_file_name);
+ DBX_OUTPUT_MAIN_SOURCE_FILENAME (asm_out_file, mapped_name);
#else
- dbxout_begin_simple_stabs_desc (input_file_name, N_SO, get_lang_number ());
+ dbxout_begin_simple_stabs_desc (mapped_name, N_SO, get_lang_number ());
dbxout_stab_value_label (ltext_label_name);
used_ltext_label_name = true;
#endif
static void
dbxout_typedefs (tree syms)
{
- for (; syms != NULL_TREE; syms = TREE_CHAIN (syms))
+ for (; syms != NULL_TREE; syms = DECL_CHAIN (syms))
{
if (TREE_CODE (syms) == TYPE_DECL)
{
n->next = current_file;
n->next_type_number = 1;
- /* Do not assign file number now.
+ /* Do not assign file number now.
Delay it until we actually emit BINCL. */
n->file_number = 0;
n->prev = NULL;
current_file->prev = n;
n->bincl_status = BINCL_PENDING;
- n->pending_bincl_name = filename;
+ n->pending_bincl_name = remap_debug_filename (filename);
pending_bincls = 1;
current_file = n;
#endif
}
#if defined (DBX_DEBUGGING_INFO)
+
+static void dbxout_block (tree, int, tree);
+
/* Output debugging info to FILE to switch to sourcefile FILENAME. */
static void
if (current_function_decl == NULL_TREE)
switch_to_section (text_section);
- dbxout_begin_simple_stabs (filename, N_SOL);
+ dbxout_begin_simple_stabs (remap_debug_filename (filename), N_SOL);
dbxout_stab_value_internal_label ("Ltext", &source_label_number);
lastfile = filename;
}
}
-/* Output N_BNSYM and line number symbol entry. */
+/* Output N_BNSYM, line number symbol entry, and local symbol at
+ function scope */
static void
dbxout_begin_prologue (unsigned int lineno, const char *filename)
&& !flag_debug_only_used_symbols)
dbxout_stabd (N_BNSYM, 0);
- dbxout_source_line (lineno, filename);
+ /* pre-increment the scope counter */
+ scope_labelno++;
+
+ dbxout_source_line (lineno, filename, 0, true);
+ /* Output function begin block at function scope, referenced
+ by dbxout_block, dbxout_source_line and dbxout_function_end. */
+ emit_pending_bincls_if_required ();
+ targetm.asm_out.internal_label (asm_out_file, "LFBB", scope_labelno);
}
/* Output a line number symbol entry for source file FILENAME and line
number LINENO. */
static void
-dbxout_source_line (unsigned int lineno, const char *filename)
+dbxout_source_line (unsigned int lineno, const char *filename,
+ int discriminator ATTRIBUTE_UNUSED,
+ bool is_stmt ATTRIBUTE_UNUSED)
{
dbxout_source_file (filename);
#else
if (DBX_LINES_FUNCTION_RELATIVE)
{
- rtx begin_label = XEXP (DECL_RTL (current_function_decl), 0);
+ char begin_label[20];
dbxout_begin_stabn_sline (lineno);
+ /* Reference current function start using LFBB. */
+ ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno);
dbxout_stab_value_internal_label_diff ("LM", &dbxout_source_line_counter,
- XSTR (begin_label, 0));
-
+ begin_label);
}
else
dbxout_stabd (N_SLINE, lineno);
/* Output the name, type, position (in bits), size (in bits) of each
field that we can support. */
- for (tem = TYPE_FIELDS (type); tem; tem = TREE_CHAIN (tem))
+ for (tem = TYPE_FIELDS (type); tem; tem = DECL_CHAIN (tem))
{
/* If one of the nodes is an error_mark or its type is then
return early. */
These differ in the types of the arguments. */
for (last = NULL_TREE;
fndecl && (last == NULL_TREE || DECL_NAME (fndecl) == DECL_NAME (last));
- fndecl = TREE_CHAIN (fndecl))
+ fndecl = DECL_CHAIN (fndecl))
/* Output the name of the field (after overloading), as
well as the name of the field before overloading, along
with its parameter list */
/* Emit a "range" type specification, which has the form:
"r<index type>;<lower bound>;<upper bound>;".
- TYPE is an INTEGER_TYPE. */
+ TYPE is an INTEGER_TYPE, LOW and HIGH are the bounds. */
static void
-dbxout_range_type (tree type)
+dbxout_range_type (tree type, tree low, tree high)
{
stabstr_C ('r');
if (TREE_TYPE (type))
}
stabstr_C (';');
- if (TYPE_MIN_VALUE (type) != 0
- && host_integerp (TYPE_MIN_VALUE (type), 0))
+ if (low && host_integerp (low, 0))
{
- if (print_int_cst_bounds_in_octal_p (type))
- stabstr_O (TYPE_MIN_VALUE (type));
+ if (print_int_cst_bounds_in_octal_p (type, low, high))
+ stabstr_O (low);
else
- stabstr_D (tree_low_cst (TYPE_MIN_VALUE (type), 0));
+ stabstr_D (tree_low_cst (low, 0));
}
else
stabstr_C ('0');
stabstr_C (';');
- if (TYPE_MAX_VALUE (type) != 0
- && host_integerp (TYPE_MAX_VALUE (type), 0))
+ if (high && host_integerp (high, 0))
{
- if (print_int_cst_bounds_in_octal_p (type))
- stabstr_O (TYPE_MAX_VALUE (type));
+ if (print_int_cst_bounds_in_octal_p (type, low, high))
+ stabstr_O (high);
else
- stabstr_D (tree_low_cst (TYPE_MAX_VALUE (type), 0));
+ stabstr_D (tree_low_cst (high, 0));
stabstr_C (';');
}
else
static void
dbxout_type (tree type, int full)
{
- tree tem;
- tree main_variant;
static int anonymous_type_number = 0;
- bool vector_type = false;
+ tree tem, main_variant, low, high;
- if (TREE_CODE (type) == VECTOR_TYPE)
+ if (TREE_CODE (type) == INTEGER_TYPE)
{
- /* The frontend feeds us a representation for the vector as a struct
- containing an array. Pull out the array type. */
- type = TREE_TYPE (TYPE_FIELDS (TYPE_DEBUG_REPRESENTATION_TYPE (type)));
- vector_type = true;
+ if (TREE_TYPE (type) == 0)
+ {
+ low = TYPE_MIN_VALUE (type);
+ high = TYPE_MAX_VALUE (type);
+ }
+
+ else if (subrange_type_for_debug_p (type, &low, &high))
+ ;
+
+ /* If this is a subtype that should not be emitted as a subrange type,
+ use the base type. */
+ else
+ {
+ type = TREE_TYPE (type);
+ low = TYPE_MIN_VALUE (type);
+ high = TYPE_MAX_VALUE (type);
+ }
}
/* If there was an input error and we don't really have a type,
if (next_type_number == typevec_len)
{
- typevec
- = ggc_realloc (typevec, (typevec_len * 2 * sizeof typevec[0]));
+ typevec = GGC_RESIZEVEC (struct typeinfo, typevec, typevec_len * 2);
memset (typevec + typevec_len, 0, typevec_len * sizeof typevec[0]);
typevec_len *= 2;
}
switch (TREE_CODE (type))
{
case VOID_TYPE:
+ case NULLPTR_TYPE:
case LANG_TYPE:
/* For a void type, just define it as itself; i.e., "5=5".
This makes us consider it defined
stabstr_C (';');
}
- dbxout_range_type (type);
+ dbxout_range_type (type, low, high);
}
else
stabstr_C (';');
}
- if (print_int_cst_bounds_in_octal_p (type))
+ if (print_int_cst_bounds_in_octal_p (type, low, high))
{
stabstr_C ('r');
dbxout_type_index (type);
stabstr_C (';');
- stabstr_O (TYPE_MIN_VALUE (type));
+ stabstr_O (low);
stabstr_C (';');
- stabstr_O (TYPE_MAX_VALUE (type));
+ stabstr_O (high);
stabstr_C (';');
}
else
/* Output other integer types as subranges of `int'. */
- dbxout_range_type (type);
+ dbxout_range_type (type, low, high);
}
break;
case REAL_TYPE:
+ case FIXED_POINT_TYPE:
/* This used to say `r1' and we used to take care
to make sure that `int' was type number 1. */
stabstr_C ('r');
break;
}
- if (use_gnu_debug_info_extensions && vector_type)
- stabstr_S ("@V;");
-
/* Output "a" followed by a range type definition
for the index type of the array
followed by a reference to the target-type.
else
{
stabstr_C ('a');
- dbxout_range_type (tem);
+ dbxout_range_type (tem, TYPE_MIN_VALUE (tem), TYPE_MAX_VALUE (tem));
}
dbxout_type (TREE_TYPE (type), 0);
break;
+ case VECTOR_TYPE:
+ /* Make vectors look like an array. */
+ if (use_gnu_debug_info_extensions)
+ stabstr_S ("@V;");
+
+ /* Output "a" followed by a range type definition
+ for the index type of the array
+ followed by a reference to the target-type.
+ ar1;0;N;M for a C array of type M and size N+1. */
+ stabstr_C ('a');
+ dbxout_range_type (integer_type_node, size_zero_node,
+ size_int (TYPE_VECTOR_SUBPARTS (type) - 1));
+
+ dbxout_type (TREE_TYPE (type), 0);
+ break;
+
case RECORD_TYPE:
case UNION_TYPE:
case QUAL_UNION_TYPE:
another type's definition; instead, output an xref
and let the definition come when the name is defined. */
stabstr_S ((TREE_CODE (type) == RECORD_TYPE) ? "xs" : "xu");
- if (TYPE_NAME (type) != 0)
+ if (TYPE_NAME (type) != 0
+ /* The C frontend creates for anonymous variable length
+ records/unions TYPE_NAME with DECL_NAME NULL. */
+ && (TREE_CODE (TYPE_NAME (type)) != TYPE_DECL
+ || DECL_NAME (TYPE_NAME (type))))
dbxout_type_name (type);
else
{
int i;
tree child;
VEC(tree,gc) *accesses = BINFO_BASE_ACCESSES (binfo);
-
+
if (use_gnu_debug_info_extensions)
{
if (BINFO_N_BASE_BINFOS (binfo))
stabstr_C ('e');
for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (tem))
{
+ tree value = TREE_VALUE (tem);
+
stabstr_I (TREE_PURPOSE (tem));
stabstr_C (':');
- if (TREE_INT_CST_HIGH (TREE_VALUE (tem)) == 0)
- stabstr_D (TREE_INT_CST_LOW (TREE_VALUE (tem)));
- else if (TREE_INT_CST_HIGH (TREE_VALUE (tem)) == -1
- && (HOST_WIDE_INT) TREE_INT_CST_LOW (TREE_VALUE (tem)) < 0)
- stabstr_D (TREE_INT_CST_LOW (TREE_VALUE (tem)));
+ if (TREE_CODE (value) == CONST_DECL)
+ value = DECL_INITIAL (value);
+
+ if (TREE_INT_CST_HIGH (value) == 0)
+ stabstr_D (TREE_INT_CST_LOW (value));
+ else if (TREE_INT_CST_HIGH (value) == -1
+ && (HOST_WIDE_INT) TREE_INT_CST_LOW (value) < 0)
+ stabstr_D (TREE_INT_CST_LOW (value));
else
- stabstr_O (TREE_VALUE (tem));
+ stabstr_O (value);
stabstr_C (',');
if (TREE_CHAIN (tem) != 0)
should be printed in octal format. */
static bool
-print_int_cst_bounds_in_octal_p (tree type)
+print_int_cst_bounds_in_octal_p (tree type, tree low, tree high)
{
/* If we can use GDB extensions and the size is wider than a long
(the size used by GDB to read them) or we may have trouble writing
can't span same size unsigned types. */
if (use_gnu_debug_info_extensions
- && TYPE_MIN_VALUE (type) != 0
- && TREE_CODE (TYPE_MIN_VALUE (type)) == INTEGER_CST
- && TYPE_MAX_VALUE (type) != 0
- && TREE_CODE (TYPE_MAX_VALUE (type)) == INTEGER_CST
+ && low && TREE_CODE (low) == INTEGER_CST
+ && high && TREE_CODE (high) == INTEGER_CST
&& (TYPE_PRECISION (type) > TYPE_PRECISION (integer_type_node)
|| ((TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node))
&& TYPE_UNSIGNED (type))
dbxout_type_name (tree type)
{
tree t = TYPE_NAME (type);
-
+
gcc_assert (t);
switch (TREE_CODE (t))
{
\f
/* This is a specialized subset of expand_expr for use by dbxout_symbol in
evaluating DECL_VALUE_EXPR. In particular, we stop if we find decls that
- havn't been expanded, or if the expression is getting so complex we won't
+ haven't been expanded, or if the expression is getting so complex we won't
be able to represent it in stabs anyway. Returns NULL on failure. */
static rtx
switch (TREE_CODE (expr))
{
case VAR_DECL:
+ /* We can't handle emulated tls variables, because the address is an
+ offset to the return value of __emutls_get_address, and there is no
+ way to express that in stabs. Also, there are name mangling issues
+ here. We end up with references to undefined symbols if we don't
+ disable debug info for these variables. */
+ if (!targetm.have_tls && DECL_THREAD_LOCAL_P (expr))
+ return NULL;
+ if (TREE_STATIC (expr)
+ && !TREE_ASM_WRITTEN (expr)
+ && !DECL_HAS_VALUE_EXPR_P (expr)
+ && !TREE_PUBLIC (expr)
+ && DECL_RTL_SET_P (expr)
+ && MEM_P (DECL_RTL (expr)))
+ {
+ /* If this is a var that might not be actually output,
+ return NULL, otherwise stabs might reference an undefined
+ symbol. */
+ struct varpool_node *node = varpool_get_node (expr);
+ if (!node || !node->needed)
+ return NULL;
+ }
+ /* FALLTHRU */
+
case PARM_DECL:
+ case RESULT_DECL:
if (DECL_HAS_VALUE_EXPR_P (expr))
return dbxout_expand_expr (DECL_VALUE_EXPR (expr));
/* FALLTHRU */
case CONST_DECL:
- case RESULT_DECL:
return DECL_RTL_IF_SET (expr);
case INTEGER_CST:
}
}
+/* Helper function for output_used_types. Queue one entry from the
+ used types hash to be output. */
+
+static int
+output_used_types_helper (void **slot, void *data)
+{
+ tree type = (tree) *slot;
+ VEC(tree, heap) **types_p = (VEC(tree, heap) **) data;
+
+ if ((TREE_CODE (type) == RECORD_TYPE
+ || TREE_CODE (type) == UNION_TYPE
+ || TREE_CODE (type) == QUAL_UNION_TYPE
+ || TREE_CODE (type) == ENUMERAL_TYPE)
+ && TYPE_STUB_DECL (type)
+ && DECL_P (TYPE_STUB_DECL (type))
+ && ! DECL_IGNORED_P (TYPE_STUB_DECL (type)))
+ VEC_quick_push (tree, *types_p, TYPE_STUB_DECL (type));
+ else if (TYPE_NAME (type)
+ && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
+ VEC_quick_push (tree, *types_p, TYPE_NAME (type));
+
+ return 1;
+}
+
+/* This is a qsort callback which sorts types and declarations into a
+ predictable order (types, then declarations, sorted by UID
+ within). */
+
+static int
+output_types_sort (const void *pa, const void *pb)
+{
+ const tree lhs = *((const tree *)pa);
+ const tree rhs = *((const tree *)pb);
+
+ if (TYPE_P (lhs))
+ {
+ if (TYPE_P (rhs))
+ return TYPE_UID (lhs) - TYPE_UID (rhs);
+ else
+ return 1;
+ }
+ else
+ {
+ if (TYPE_P (rhs))
+ return -1;
+ else
+ return DECL_UID (lhs) - DECL_UID (rhs);
+ }
+}
+
+
+/* Force all types used by this function to be output in debug
+ information. */
+
+static void
+output_used_types (void)
+{
+ if (cfun && cfun->used_types_hash)
+ {
+ VEC(tree, heap) *types;
+ int i;
+ tree type;
+
+ types = VEC_alloc (tree, heap, htab_elements (cfun->used_types_hash));
+ htab_traverse (cfun->used_types_hash, output_used_types_helper, &types);
+
+ /* Sort by UID to prevent dependence on hash table ordering. */
+ VEC_qsort (tree, types, output_types_sort);
+
+ FOR_EACH_VEC_ELT (tree, types, i, type)
+ debug_queue_symbol (type);
+
+ VEC_free (tree, heap, types);
+ }
+}
+
/* Output a .stabs for the symbol defined by DECL,
which must be a ..._DECL node in the normal namespace.
It may be a CONST_DECL, a FUNCTION_DECL, a PARM_DECL or a VAR_DECL.
/* If we are to generate only the symbols actually used then such
symbol nodes are flagged with TREE_USED. Ignore any that
- aren't flaged as TREE_USED. */
+ aren't flagged as TREE_USED. */
if (flag_debug_only_used_symbols
&& (!TREE_USED (decl)
|| GET_CODE (XEXP (decl_rtl, 0)) != SYMBOL_REF)
break;
+ if (flag_debug_only_used_symbols)
+ output_used_types ();
+
dbxout_begin_complex_stabs ();
stabstr_I (DECL_ASSEMBLER_NAME (decl));
stabstr_S (TREE_PUBLIC (decl) ? ":F" : ":f");
}
case PARM_DECL:
- /* Parm decls go in their own separate chains
- and are output by dbxout_reg_parms and dbxout_parms. */
- gcc_unreachable ();
+ if (DECL_HAS_VALUE_EXPR_P (decl))
+ decl = DECL_VALUE_EXPR (decl);
+
+ /* PARM_DECLs go in their own separate chain and are output by
+ dbxout_reg_parms and dbxout_parms, except for those that are
+ disguised VAR_DECLs like Out parameters in Ada. */
+ gcc_assert (TREE_CODE (decl) == VAR_DECL);
+
+ /* ... fall through ... */
case RESULT_DECL:
case VAR_DECL:
&& DECL_INITIAL (decl) != 0
&& host_integerp (DECL_INITIAL (decl), 0)
&& ! TREE_ASM_WRITTEN (decl)
- && (DECL_CONTEXT (decl) == NULL_TREE
+ && (DECL_FILE_SCOPE_P (decl)
|| TREE_CODE (DECL_CONTEXT (decl)) == BLOCK
|| TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL)
&& TREE_PUBLIC (decl) == 0)
if (!decl_rtl)
DBXOUT_DECR_NESTING_AND_RETURN (0);
- decl_rtl = eliminate_regs (decl_rtl, 0, NULL_RTX);
+ decl_rtl = eliminate_regs (decl_rtl, VOIDmode, NULL_RTX);
#ifdef LEAF_REG_REMAP
if (current_function_uses_only_leaf_regs)
leaf_renumber_regs_insn (decl_rtl);
dbxout_symbol_location (tree decl, tree type, const char *suffix, rtx home)
{
int letter = 0;
- STAB_CODE_TYPE code;
+ stab_code_type code;
rtx addr = 0;
int number = 0;
int regno = -1;
{
if (TREE_PUBLIC (decl))
{
+ int offs;
letter = 'G';
code = N_GSYM;
+ if (NULL != dbxout_common_check (decl, &offs))
+ {
+ letter = 'V';
+ addr = 0;
+ number = offs;
+ }
}
else
{
if (DECL_INITIAL (decl) == 0
|| (!strcmp (lang_hooks.name, "GNU C++")
&& DECL_INITIAL (decl) == error_mark_node))
- code = N_LCSYM;
+ {
+ int offs;
+ code = N_LCSYM;
+ if (NULL != dbxout_common_check (decl, &offs))
+ {
+ addr = 0;
+ number = offs;
+ letter = 'V';
+ code = N_GSYM;
+ }
+ }
else if (DECL_IN_TEXT_SECTION (decl))
/* This is not quite right, but it's the closest
of all the codes that Unix defines. */
|| (REG_P (XEXP (home, 0))
&& REGNO (XEXP (home, 0)) != HARD_FRAME_POINTER_REGNUM
&& REGNO (XEXP (home, 0)) != STACK_POINTER_REGNUM
-#if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
+#if !HARD_FRAME_POINTER_IS_ARG_POINTER
&& REGNO (XEXP (home, 0)) != ARG_POINTER_REGNUM
#endif
)))
}
else if (MEM_P (home)
&& GET_CODE (XEXP (home, 0)) == PLUS
- && GET_CODE (XEXP (XEXP (home, 0), 1)) == CONST_INT)
+ && CONST_INT_P (XEXP (XEXP (home, 0), 1)))
{
code = N_LSYM;
/* RTL looks like (MEM (PLUS (REG...) (CONST_INT...)))
variable, thereby avoiding the need for a register. In such
cases we're forced to lie to debuggers and tell them that
this variable was itself `static'. */
+ int offs;
code = N_LCSYM;
letter = 'V';
- addr = XEXP (XEXP (home, 0), 0);
+ if (NULL == dbxout_common_check (decl, &offs))
+ addr = XEXP (XEXP (home, 0), 0);
+ else
+ {
+ addr = 0;
+ number = offs;
+ code = N_GSYM;
+ }
}
else if (GET_CODE (home) == CONCAT)
{
{
tree name;
- if (DECL_CONTEXT (decl)
+ if (DECL_CONTEXT (decl)
&& (TYPE_P (DECL_CONTEXT (decl))
|| TREE_CODE (DECL_CONTEXT (decl)) == NAMESPACE_DECL))
/* One slight hitch: if this is a VAR_DECL which is a class member
stabstr_C (letter);
}
+
+/* Output the common block name for DECL in a stabs.
+
+ Symbols in global common (.comm) get wrapped with an N_BCOMM/N_ECOMM pair
+ around each group of symbols in the same .comm area. The N_GSYM stabs
+ that are emitted only contain the offset in the common area. This routine
+ emits the N_BCOMM and N_ECOMM stabs. */
+
+static void
+dbxout_common_name (tree decl, const char *name, stab_code_type op)
+{
+ dbxout_begin_complex_stabs ();
+ stabstr_S (name);
+ dbxout_finish_complex_stabs (decl, op, NULL_RTX, NULL, 0);
+}
+
+/* Check decl to determine whether it is a VAR_DECL destined for storage in a
+ common area. If it is, the return value will be a non-null string giving
+ the name of the common storage block it will go into. If non-null, the
+ value is the offset into the common block for that symbol's storage. */
+
+static const char *
+dbxout_common_check (tree decl, int *value)
+{
+ rtx home;
+ rtx sym_addr;
+ const char *name = NULL;
+
+ /* If the decl isn't a VAR_DECL, or if it isn't static, or if
+ it does not have a value (the offset into the common area), or if it
+ is thread local (as opposed to global) then it isn't common, and shouldn't
+ be handled as such.
+
+ ??? DECL_THREAD_LOCAL_P check prevents problems with improper .stabs
+ for thread-local symbols. Can be handled via same mechanism as used
+ in dwarf2out.c. */
+ if (TREE_CODE (decl) != VAR_DECL
+ || !TREE_STATIC(decl)
+ || !DECL_HAS_VALUE_EXPR_P(decl)
+ || DECL_THREAD_LOCAL_P (decl)
+ || !is_fortran ())
+ return NULL;
+
+ home = DECL_RTL (decl);
+ if (home == NULL_RTX || GET_CODE (home) != MEM)
+ return NULL;
+
+ sym_addr = dbxout_expand_expr (DECL_VALUE_EXPR (decl));
+ if (sym_addr == NULL_RTX || GET_CODE (sym_addr) != MEM)
+ return NULL;
+
+ sym_addr = XEXP (sym_addr, 0);
+ if (GET_CODE (sym_addr) == CONST)
+ sym_addr = XEXP (sym_addr, 0);
+ if ((GET_CODE (sym_addr) == SYMBOL_REF || GET_CODE (sym_addr) == PLUS)
+ && DECL_INITIAL (decl) == 0)
+ {
+
+ /* We have a sym that will go into a common area, meaning that it
+ will get storage reserved with a .comm/.lcomm assembler pseudo-op.
+
+ Determine name of common area this symbol will be an offset into,
+ and offset into that area. Also retrieve the decl for the area
+ that the symbol is offset into. */
+ tree cdecl = NULL;
+
+ switch (GET_CODE (sym_addr))
+ {
+ case PLUS:
+ if (CONST_INT_P (XEXP (sym_addr, 0)))
+ {
+ name =
+ targetm.strip_name_encoding(XSTR (XEXP (sym_addr, 1), 0));
+ *value = INTVAL (XEXP (sym_addr, 0));
+ cdecl = SYMBOL_REF_DECL (XEXP (sym_addr, 1));
+ }
+ else
+ {
+ name =
+ targetm.strip_name_encoding(XSTR (XEXP (sym_addr, 0), 0));
+ *value = INTVAL (XEXP (sym_addr, 1));
+ cdecl = SYMBOL_REF_DECL (XEXP (sym_addr, 0));
+ }
+ break;
+
+ case SYMBOL_REF:
+ name = targetm.strip_name_encoding(XSTR (sym_addr, 0));
+ *value = 0;
+ cdecl = SYMBOL_REF_DECL (sym_addr);
+ break;
+
+ default:
+ error ("common symbol debug info is not structured as "
+ "symbol+offset");
+ }
+
+ /* Check area common symbol is offset into. If this is not public, then
+ it is not a symbol in a common block. It must be a .lcomm symbol, not
+ a .comm symbol. */
+ if (cdecl == NULL || !TREE_PUBLIC(cdecl))
+ name = NULL;
+ }
+ else
+ name = NULL;
+
+ return name;
+}
+
/* Output definitions of all the decls in a chain. Return nonzero if
anything was output */
dbxout_syms (tree syms)
{
int result = 0;
+ const char *comm_prev = NULL;
+ tree syms_prev = NULL;
+
while (syms)
{
+ int temp, copen, cclos;
+ const char *comm_new;
+
+ /* Check for common symbol, and then progression into a new/different
+ block of common symbols. Emit closing/opening common bracket if
+ necessary. */
+ comm_new = dbxout_common_check (syms, &temp);
+ copen = comm_new != NULL
+ && (comm_prev == NULL || strcmp (comm_new, comm_prev));
+ cclos = comm_prev != NULL
+ && (comm_new == NULL || strcmp (comm_new, comm_prev));
+ if (cclos)
+ dbxout_common_name (syms_prev, comm_prev, N_ECOMM);
+ if (copen)
+ {
+ dbxout_common_name (syms, comm_new, N_BCOMM);
+ syms_prev = syms;
+ }
+ comm_prev = comm_new;
+
result += dbxout_symbol (syms, 1);
- syms = TREE_CHAIN (syms);
+ syms = DECL_CHAIN (syms);
}
+
+ if (comm_prev != NULL)
+ dbxout_common_name (syms_prev, comm_prev, N_ECOMM);
+
return result;
}
\f
++debug_nesting;
emit_pending_bincls_if_required ();
- for (; parms; parms = TREE_CHAIN (parms))
+ for (; parms; parms = DECL_CHAIN (parms))
if (DECL_NAME (parms)
&& TREE_TYPE (parms) != error_mark_node
&& DECL_RTL_SET_P (parms)
{
tree eff_type;
char letter;
- STAB_CODE_TYPE code;
+ stab_code_type code;
int number;
/* Perform any necessary register eliminations on the parameter's rtl,
so that the debugging output will be accurate. */
DECL_INCOMING_RTL (parms)
- = eliminate_regs (DECL_INCOMING_RTL (parms), 0, NULL_RTX);
- SET_DECL_RTL (parms, eliminate_regs (DECL_RTL (parms), 0, NULL_RTX));
+ = eliminate_regs (DECL_INCOMING_RTL (parms), VOIDmode, NULL_RTX);
+ SET_DECL_RTL (parms,
+ eliminate_regs (DECL_RTL (parms), VOIDmode, NULL_RTX));
#ifdef LEAF_REG_REMAP
if (current_function_uses_only_leaf_regs)
{
If that is not true, we produce meaningless results,
but do not crash. */
if (GET_CODE (inrtl) == PLUS
- && GET_CODE (XEXP (inrtl, 1)) == CONST_INT)
+ && CONST_INT_P (XEXP (inrtl, 1)))
number = INTVAL (XEXP (inrtl, 1));
else
number = 0;
was passed. */
if (REGNO (DECL_RTL (parms)) < FIRST_PSEUDO_REGISTER)
best_rtl = DECL_RTL (parms);
+ else if (GET_CODE (DECL_INCOMING_RTL (parms)) == PARALLEL)
+ best_rtl = XEXP (XVECEXP (DECL_INCOMING_RTL (parms), 0, 0), 0);
else
best_rtl = DECL_INCOMING_RTL (parms);
&& REG_P (XEXP (DECL_RTL (parms), 0))
&& REGNO (XEXP (DECL_RTL (parms), 0)) != HARD_FRAME_POINTER_REGNUM
&& REGNO (XEXP (DECL_RTL (parms), 0)) != STACK_POINTER_REGNUM
-#if ARG_POINTER_REGNUM != HARD_FRAME_POINTER_REGNUM
+#if !HARD_FRAME_POINTER_IS_ARG_POINTER
&& REGNO (XEXP (DECL_RTL (parms), 0)) != ARG_POINTER_REGNUM
#endif
)
that it was actually passed by invisible reference. */
code = DBX_REGPARM_STABS_CODE;
-
+
/* GDB likes this marked with a special letter. */
letter = (use_gnu_debug_info_extensions
? 'a' : DBX_REGPARM_STABS_LETTER);
continue;
dbxout_begin_complex_stabs ();
-
+
if (DECL_NAME (parms))
{
stabstr_I (DECL_NAME (parms));
{
++debug_nesting;
- for (; parms; parms = TREE_CHAIN (parms))
+ for (; parms; parms = DECL_CHAIN (parms))
if (DECL_NAME (parms) && PARM_PASSED_IN_MEMORY (parms))
{
/* Report parms that live in registers during the function
}
}
\f
+#if defined (DBX_DEBUGGING_INFO)
+
/* Subroutine of dbxout_block. Emit an N_LBRAC stab referencing LABEL.
BEGIN_LABEL is the name of the beginning of the function, which may
be required. */
dbx_output_lbrac (const char *label,
const char *begin_label ATTRIBUTE_UNUSED)
{
-#ifdef DBX_OUTPUT_LBRAC
- DBX_OUTPUT_LBRAC (asm_out_file, label);
-#else
dbxout_begin_stabn (N_LBRAC);
if (DBX_BLOCKS_FUNCTION_RELATIVE)
dbxout_stab_value_label_diff (label, begin_label);
else
dbxout_stab_value_label (label);
-#endif
}
/* Subroutine of dbxout_block. Emit an N_RBRAC stab referencing LABEL.
dbx_output_rbrac (const char *label,
const char *begin_label ATTRIBUTE_UNUSED)
{
-#ifdef DBX_OUTPUT_RBRAC
- DBX_OUTPUT_RBRAC (asm_out_file, label);
-#else
dbxout_begin_stabn (N_RBRAC);
if (DBX_BLOCKS_FUNCTION_RELATIVE)
dbxout_stab_value_label_diff (label, begin_label);
else
dbxout_stab_value_label (label);
-#endif
}
/* Output everything about a symbol block (a BLOCK node
static void
dbxout_block (tree block, int depth, tree args)
{
- const char *begin_label
- = XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0);
+ char begin_label[20];
+ /* Reference current function start using LFBB. */
+ ASM_GENERATE_INTERNAL_LABEL (begin_label, "LFBB", scope_labelno);
while (block)
{
if (depth == 0)
/* The outermost block doesn't get LBB labels; use
- the function symbol. */
+ the LFBB local symbol emitted by dbxout_begin_prologue. */
scope_start = begin_label;
else
{
scope_start = buf;
}
- if (BLOCK_HANDLER_BLOCK (block))
- {
- /* A catch block. Must precede N_LBRAC. */
- tree decl = BLOCK_VARS (block);
- while (decl)
- {
- dbxout_begin_complex_stabs ();
- stabstr_I (DECL_NAME (decl));
- stabstr_S (":C1");
- dbxout_finish_complex_stabs (0, N_CATCH, 0,
- scope_start, 0);
- decl = TREE_CHAIN (decl);
- }
- }
dbx_output_lbrac (scope_start, begin_label);
}
Usually this follows the function's code,
but on some systems, it comes before. */
-#if defined (DBX_DEBUGGING_INFO)
static void
dbxout_begin_function (tree decl)
{
int saved_tree_used1;
- if (DECL_IGNORED_P (decl))
- return;
-
saved_tree_used1 = TREE_USED (decl);
TREE_USED (decl) = 1;
if (DECL_NAME (DECL_RESULT (decl)) != 0)
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