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llvm / llvm-archive / 48649d2c83b557841c9e5c978d9ab5af13cb52e5 / . / llvm-gcc-4.0 / gcc / dbxout.c
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/* 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 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
version.
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 GCC; see the file COPYING. If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA. */
/* Output dbx-format symbol table data.
This consists of many symbol table entries, each of them
a .stabs assembler pseudo-op with four operands:
a "name" which is really a description of one symbol and its type,
a "code", which is a symbol defined in stab.h whose name starts with N_,
an unused operand always 0,
and a "value" which is an address or an offset.
The name is enclosed in doublequote characters.
Each function, variable, typedef, and structure tag
has a symbol table entry to define it.
The beginning and end of each level of name scoping within
a function are also marked by special symbol table entries.
The "name" consists of the symbol name, a colon, a kind-of-symbol letter,
and a data type number. The data type number may be followed by
"=" and a type definition; normally this will happen the first time
the type number is mentioned. The type definition may refer to
other types by number, and those type numbers may be followed
by "=" and nested definitions.
This can make the "name" quite long.
When a name is more than 80 characters, we split the .stabs pseudo-op
into two .stabs pseudo-ops, both sharing the same "code" and "value".
The first one is marked as continued with a double-backslash at the
end of its "name".
The kind-of-symbol letter distinguished function names from global
variables from file-scope variables from parameters from auto
variables in memory from typedef names from register variables.
See `dbxout_symbol'.
The "code" is mostly redundant with the kind-of-symbol letter
that goes in the "name", but not entirely: for symbols located
in static storage, the "code" says which segment the address is in,
which controls how it is relocated.
The "value" for a symbol in static storage
is the core address of the symbol (actually, the assembler
label for the symbol). For a symbol located in a stack slot
it is the stack offset; for one in a register, the register number.
For a typedef symbol, it is zero.
If DEBUG_SYMS_TEXT is defined, all debugging symbols must be
output while in the text section.
For more on data type definitions, see `dbxout_type'. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "rtl.h"
#include "flags.h"
#include "regs.h"
#include "insn-config.h"
#include "reload.h"
#include "output.h"
#include "dbxout.h"
#include "toplev.h"
#include "tm_p.h"
#include "ggc.h"
#include "debug.h"
#include "function.h"
#include "target.h"
#include "langhooks.h"
#include "obstack.h"
#ifdef XCOFF_DEBUGGING_INFO
#include "xcoffout.h"
#endif
#define DBXOUT_DECR_NESTING \
if (--debug_nesting == 0 && symbol_queue_index > 0) \
{ emit_pending_bincls_if_required (); debug_flush_symbol_queue (); }
#define DBXOUT_DECR_NESTING_AND_RETURN(x) \
do {--debug_nesting; return (x);} while (0)
#ifndef ASM_STABS_OP
# ifdef XCOFF_DEBUGGING_INFO
# define ASM_STABS_OP "\t.stabx\t"
# else
# define ASM_STABS_OP "\t.stabs\t"
# endif
#endif
#ifndef ASM_STABN_OP
#define ASM_STABN_OP "\t.stabn\t"
#endif
#ifndef ASM_STABD_OP
#define ASM_STABD_OP "\t.stabd\t"
#endif
#ifndef DBX_TYPE_DECL_STABS_CODE
#define DBX_TYPE_DECL_STABS_CODE N_LSYM
#endif
#ifndef DBX_STATIC_CONST_VAR_CODE
#define DBX_STATIC_CONST_VAR_CODE N_FUN
#endif
#ifndef DBX_REGPARM_STABS_CODE
#define DBX_REGPARM_STABS_CODE N_RSYM
#endif
#ifndef DBX_REGPARM_STABS_LETTER
#define DBX_REGPARM_STABS_LETTER 'P'
#endif
#ifndef NO_DBX_FUNCTION_END
#define NO_DBX_FUNCTION_END 0
#endif
#ifndef NO_DBX_BNSYM_ENSYM
#define NO_DBX_BNSYM_ENSYM 0
#endif
#ifndef NO_DBX_MAIN_SOURCE_DIRECTORY
#define NO_DBX_MAIN_SOURCE_DIRECTORY 0
#endif
#ifndef DBX_BLOCKS_FUNCTION_RELATIVE
#define DBX_BLOCKS_FUNCTION_RELATIVE 0
#endif
#ifndef DBX_LINES_FUNCTION_RELATIVE
#define DBX_LINES_FUNCTION_RELATIVE 0
#endif
#ifndef DBX_CONTIN_LENGTH
#define DBX_CONTIN_LENGTH 80
#endif
#ifndef DBX_CONTIN_CHAR
#define DBX_CONTIN_CHAR '\\'
#endif
/* APPLE LOCAL dbxout_type rewrite. */
enum typestatus {TYPE_UNSEEN, TYPE_XREF, TYPE_DEFINED, TYPE_QUEUED};
/* Structure recording information about a C data type.
The status element says whether we have yet output
the definition of the type. TYPE_XREF says we have
output it as a cross-reference only.
The file_number and type_number elements are used if DBX_USE_BINCL
is defined. */
struct typeinfo GTY(())
{
enum typestatus status;
int file_number;
int type_number;
/* APPLE LOCAL dbxout_type rewrite. */
int q_type_number;
};
/* Vector recording information about C data types.
When we first notice a data type (a tree node),
we assign it a number using next_type_number.
That is its index in this vector. */
static GTY ((length ("typevec_len"))) struct typeinfo *typevec;
/* Number of elements of space allocated in `typevec'. */
static GTY(()) int typevec_len;
/* In dbx output, each type gets a unique number.
This is the number for the next type output.
The number, once assigned, is in the TYPE_SYMTAB_ADDRESS field. */
static GTY(()) int next_type_number;
/* APPLE LOCAL begin dbxout_type rewrite. */
struct qualified_typeinfo GTY(())
{
int pointer_type;
int function_type;
int file_type;
int reference_type;
int const_type;
int volatile_type;
};
static GTY ((length ("q_typevec_len"))) struct qualified_typeinfo *q_typevec;
static GTY(()) int q_typevec_len;
static GTY(()) int next_q_type_number;
static int dbxout_next_q_type_number (void);
/* APPLE LOCAL end dbxout_type rewrite. */
/* The C front end may call dbxout_symbol before dbxout_init runs.
We save all such decls in this list and output them when we get
to dbxout_init. */
static GTY(()) tree preinit_symbols;
/* APPLE LOCAL 4215975 */
static GTY(()) tree anon_place_holder;
enum binclstatus {BINCL_NOT_REQUIRED, BINCL_PENDING, BINCL_PROCESSED};
/* When using N_BINCL in dbx output, each type number is actually a
pair of the file number and the type number within the file.
This is a stack of input files. */
struct dbx_file
{
struct dbx_file *next;
int file_number;
int next_type_number;
enum binclstatus bincl_status; /* Keep track of lazy bincl. */
const char *pending_bincl_name; /* Name of bincl. */
struct dbx_file *prev; /* Chain to traverse all pending bincls. */
};
/* 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
should always be 0 because we should not have needed any file numbers
yet. */
#if (defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)) \
&& defined (DBX_USE_BINCL)
static struct dbx_file *current_file;
#endif
/* APPLE LOCAL begin ss2 */
/* This is the output file used by dbxout routines. */
static FILE *dbx_out_file;
/* APPLE LOCAL end ss2 */
/* This is the next file number to use. */
static GTY(()) int next_file_number;
/* A counter for dbxout_function_end. */
static GTY(()) int scope_labelno;
/* A counter for dbxout_source_line. */
static GTY(()) int dbxout_source_line_counter;
/* Nonzero if we have actually used any of the GDB extensions
to the debugging format. The idea is that we use them for the
first time only if there's a strong reason, but once we have done that,
we use them whenever convenient. */
static GTY(()) int have_used_extensions = 0;
/* Number for the next N_SOL filename stabs label. The number 0 is reserved
for the N_SO filename stabs label. */
static GTY(()) int source_label_number = 1;
/* Last source file name mentioned in a NOTE insn. */
static GTY(()) const char *lastfile;
/* Used by PCH machinery to detect if 'lastfile' should be reset to
base_input_file. */
static GTY(()) int lastfile_is_base;
/* Typical USG systems don't have stab.h, and they also have
no use for DBX-format debugging info. */
#if defined (DBX_DEBUGGING_INFO) || defined (XCOFF_DEBUGGING_INFO)
#ifdef DBX_USE_BINCL
/* If zero then there is no pending BINCL. */
static int pending_bincls = 0;
#endif
/* The original input file name. */
static const char *base_input_file;
#ifdef DEBUG_SYMS_TEXT
#define FORCE_TEXT function_section (current_function_decl);
#else
#define FORCE_TEXT
#endif
#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) \
(MEM_P (DECL_INCOMING_RTL (PARM)))
/* A C expression for the integer offset value of an automatic variable
(N_LSYM) having address X (an RTX). */
#ifndef DEBUGGER_AUTO_OFFSET
#define DEBUGGER_AUTO_OFFSET(X) \
(GET_CODE (X) == PLUS ? INTVAL (XEXP (X, 1)) : 0)
#endif
/* A C expression for the integer offset value of an argument (N_PSYM)
having address X (an RTX). The nominal offset is OFFSET. */
#ifndef DEBUGGER_ARG_OFFSET
#define DEBUGGER_ARG_OFFSET(OFFSET, X) (OFFSET)
#endif
/* This obstack holds the stab string currently being constructed. We
build it up here, then write it out, so we can split long lines up
properly (see dbxout_finish_complex_stabs). */
static struct obstack stabstr_ob;
static size_t stabstr_last_contin_point;
#ifdef DBX_USE_BINCL
static void emit_bincl_stab (const char *c);
static void emit_pending_bincls (void);
#endif
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_typedefs (tree);
static void dbxout_type_index (tree);
static void dbxout_args (tree);
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);
/* APPLE LOCAL begin dbxout_type rewrite. */
static bool dbxout_type (tree, int);
static bool dbxout_partial_type (tree, tree);
static void dbxout_complete_type (tree, tree);
static void dbxout_type_xref (tree);
static void dbxout_pointer_type (tree);
static void dbxout_void_type (tree);
static void dbxout_integer_type (tree);
static void dbxout_real_type (tree);
static void dbxout_char_type (tree);
static void dbxout_boolean_type (tree);
static void dbxout_complex_type (tree);
static void dbxout_file_type (tree);
static void dbxout_function_type (tree);
static void dbxout_reference_type (tree);
static int dbxout_reusable_type (tree);
static void dbxout_note_q_type (tree);
static void dbxout_next_type_number (tree);
#ifdef DBX_NO_XREFS
static bool dbxout_cross_ref_type_p (tree);
#endif
static void dbxout_type_with_name (tree);
static void dbxout_queue_type (tree);
static void dbxout_free_type_queue (void);
/* APPLE LOCAL end dbxout_type rewrite. */
static bool print_int_cst_bounds_in_octal_p (tree);
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_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_begin_prologue (unsigned int, const char *);
static void dbxout_source_file (const char *);
static void dbxout_function_end (tree);
static void dbxout_begin_function (tree);
static void dbxout_begin_block (unsigned, unsigned);
static void dbxout_end_block (unsigned, unsigned);
static void dbxout_function_decl (tree);
const struct gcc_debug_hooks dbx_debug_hooks =
{
dbxout_init,
dbxout_finish,
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 */
dbxout_source_line, /* source_line */
dbxout_begin_prologue, /* begin_prologue */
debug_nothing_int_charstar, /* end_prologue */
debug_nothing_int_charstar, /* end_epilogue */
#ifdef DBX_FUNCTION_FIRST
dbxout_begin_function,
#else
debug_nothing_tree, /* begin_function */
#endif
debug_nothing_int, /* end_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, /* deferred_inline_function */
/* APPLE LOCAL begin mainline 2006-05-15 rewrite 4548482 */
debug_nothing_tree_loc, /* outlining_inline_function */
/* APPLE LOCAL end mainline 2006-05-15 rewrite 4548482 */
debug_nothing_rtx, /* label */
dbxout_handle_pch, /* handle_pch */
debug_nothing_rtx, /* var_location */
/* APPLE LOCAL opt diary */
debug_nothing_od_msg_loc, /* Optimization Diary Entry */
0 /* start_end_main_source_file */
};
#endif /* DBX_DEBUGGING_INFO */
#if defined (XCOFF_DEBUGGING_INFO)
const struct gcc_debug_hooks xcoff_debug_hooks =
{
dbxout_init,
dbxout_finish,
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 */
xcoffout_source_line,
xcoffout_begin_prologue, /* begin_prologue */
debug_nothing_int_charstar, /* end_prologue */
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, /* deferred_inline_function */
/* APPLE LOCAL begin mainline 2006-05-15 rewrite 4548482 */
debug_nothing_tree_loc, /* outlining_inline_function */
/* APPLE LOCAL end mainline 2006-05-15 rewrite 4548482 */
debug_nothing_rtx, /* label */
dbxout_handle_pch, /* handle_pch */
debug_nothing_rtx, /* var_location */
/* APPLE LOCAL opt diary */
debug_nothing_od_msg_loc, /* Optimization Diary Entry */
0 /* start_end_main_source_file */
};
#endif /* XCOFF_DEBUGGING_INFO */
/* Numeric formatting helper macro. Note that this does not handle
hexadecimal. */
#define NUMBER_FMT_LOOP(P, NUM, BASE) \
do \
{ \
int digit = NUM % BASE; \
NUM /= BASE; \
*--P = digit + '0'; \
} \
while (NUM > 0)
/* APPLE LOCAL ss2 */
/* Utility: write a decimal integer NUM to dbx_out_file. */
void
dbxout_int (int num)
{
char buf[64];
char *p = buf + sizeof buf;
unsigned int unum;
if (num == 0)
{
/* APPLE LOCAL ss2 */
putc ('0', dbx_out_file);
return;
}
if (num < 0)
{
/* APPLE LOCAL ss2 */
putc ('-', dbx_out_file);
unum = -num;
}
else
unum = num;
NUMBER_FMT_LOOP (p, unum, 10);
while (p < buf + sizeof buf)
{
/* APPLE LOCAL ss2 */
putc (*p, dbx_out_file);
p++;
}
}
/* Primitives for emitting simple stabs directives. All other stabs
routines should use these functions instead of directly emitting
stabs. They are exported because machine-dependent code may need
to invoke them, e.g. in a DBX_OUTPUT_* macro whose definition
forwards to code in CPU.c. */
/* The following functions should all be called immediately after one
of the dbxout_begin_stab* functions (below). They write out
various things as the value of a stab. */
/* Write out a literal zero as the value of a stab. */
void
dbxout_stab_value_zero (void)
{
/* APPLE LOCAL ss2 */
fputs ("0\n", dbx_out_file);
}
/* Write out the label LABEL as the value of a stab. */
void
dbxout_stab_value_label (const char *label)
{
/* APPLE LOCAL begin ss2 */
assemble_name (dbx_out_file, label);
putc ('\n', dbx_out_file);
/* APPLE LOCAL end ss2 */
}
/* Write out the difference of two labels, LABEL - BASE, as the value
of a stab. */
void
dbxout_stab_value_label_diff (const char *label, const char *base)
{
/* APPLE LOCAL begin ss2 */
assemble_name (dbx_out_file, label);
putc ('-', dbx_out_file);
assemble_name (dbx_out_file, base);
putc ('\n', dbx_out_file);
/* APPLE LOCAL end ss2 */
}
/* Write out an internal label as the value of a stab, and immediately
emit that internal label. This should be used only when
dbxout_stabd will not work. STEM is the name stem of the label,
COUNTERP is a pointer to a counter variable which will be used to
guarantee label uniqueness. */
void
dbxout_stab_value_internal_label (const char *stem, int *counterp)
{
char label[100];
int counter = counterp ? (*counterp)++ : 0;
ASM_GENERATE_INTERNAL_LABEL (label, stem, counter);
dbxout_stab_value_label (label);
/* APPLE LOCAL ss2 */
targetm.asm_out.internal_label (dbx_out_file, stem, counter);
}
/* Write out the difference between BASE and an internal label as the
value of a stab, and immediately emit that internal label. STEM and
COUNTERP are as for dbxout_stab_value_internal_label. */
void
dbxout_stab_value_internal_label_diff (const char *stem, int *counterp,
const char *base)
{
char label[100];
int counter = counterp ? (*counterp)++ : 0;
ASM_GENERATE_INTERNAL_LABEL (label, stem, counter);
dbxout_stab_value_label_diff (label, base);
/* APPLE LOCAL ss2 */
targetm.asm_out.internal_label (dbx_out_file, stem, counter);
}
/* The following functions produce specific kinds of stab directives. */
/* APPLE LOCAL ss2 */
/* Write a .stabd directive with type STYPE and desc SDESC to dbx_out_file. */
void
dbxout_stabd (int stype, int sdesc)
{
/* APPLE LOCAL ss2 */
fputs (ASM_STABD_OP, dbx_out_file);
dbxout_int (stype);
/* APPLE LOCAL ss2 */
fputs (",0,", dbx_out_file);
dbxout_int (sdesc);
/* APPLE LOCAL ss2 */
putc ('\n', dbx_out_file);
}
/* Write a .stabn directive with type STYPE. This function stops
short of emitting the value field, which is the responsibility of
the caller (normally it will be either a symbol or the difference
of two symbols). */
void
dbxout_begin_stabn (int stype)
{
/* APPLE LOCAL ss2 */
fputs (ASM_STABN_OP, dbx_out_file);
dbxout_int (stype);
/* APPLE LOCAL ss2 */
fputs (",0,0,", dbx_out_file);
}
/* Write a .stabn directive with type N_SLINE and desc LINE. As above,
the value field is the responsibility of the caller. */
void
dbxout_begin_stabn_sline (int lineno)
{
/* APPLE LOCAL ss2 */
fputs (ASM_STABN_OP, dbx_out_file);
dbxout_int (N_SLINE);
/* APPLE LOCAL ss2 */
fputs (",0,", dbx_out_file);
dbxout_int (lineno);
/* APPLE LOCAL ss2 */
putc (',', dbx_out_file);
}
/* Begin a .stabs directive with string "", type STYPE, and desc and
other fields 0. The value field is the responsibility of the
caller. This function cannot be used for .stabx directives. */
void
dbxout_begin_empty_stabs (int stype)
{
/* APPLE LOCAL begin ss2 */
fputs (ASM_STABS_OP, dbx_out_file);
fputs ("\"\",", dbx_out_file);
/* APPLE LOCAL end ss2 */
dbxout_int (stype);
/* APPLE LOCAL ss2 */
fputs (",0,0,", dbx_out_file);
}
/* Begin a .stabs directive with string STR, type STYPE, and desc 0.
The value field is the responsibility of the caller. */
void
dbxout_begin_simple_stabs (const char *str, int stype)
{
/* APPLE LOCAL begin ss2 */
fputs (ASM_STABS_OP, dbx_out_file);
output_quoted_string (dbx_out_file, str);
putc (',', dbx_out_file);
/* APPLE LOCAL end ss2 */
dbxout_int (stype);
/* APPLE LOCAL ss2 */
fputs (",0,0,", dbx_out_file);
}
/* As above but use SDESC for the desc field. */
void
dbxout_begin_simple_stabs_desc (const char *str, int stype, int sdesc)
{
/* APPLE LOCAL begin ss2 */
fputs (ASM_STABS_OP, dbx_out_file);
output_quoted_string (dbx_out_file, str);
putc (',', dbx_out_file);
/* APPLE LOCAL end ss2 */
dbxout_int (stype);
/* APPLE LOCAL ss2 */
fputs (",0,", dbx_out_file);
dbxout_int (sdesc);
/* APPLE LOCAL ss2 */
putc (',', dbx_out_file);
}
/* The next set of functions are entirely concerned with production of
"complex" .stabs directives: that is, .stabs directives whose
strings have to be constructed piecemeal. dbxout_type,
dbxout_symbol, etc. use these routines heavily. The string is queued
up in an obstack, then written out by dbxout_finish_complex_stabs, which
is also responsible for splitting it up if it exceeds DBX_CONTIN_LENGTH.
(You might think it would be more efficient to go straight to stdio
when DBX_CONTIN_LENGTH is 0 (i.e. no length limit) but that turns
out not to be the case, and anyway this needs fewer #ifdefs.) */
/* Begin a complex .stabs directive. If we can, write the initial
APPLE LOCAL ss2
ASM_STABS_OP to the dbx_out_file. */
static void
dbxout_begin_complex_stabs (void)
{
emit_pending_bincls_if_required ();
FORCE_TEXT;
/* APPLE LOCAL ss2 */
fputs (ASM_STABS_OP, dbx_out_file);
/* APPLE LOCAL ss2 */
putc ('"', dbx_out_file);
gcc_assert (stabstr_last_contin_point == 0);
}
/* As above, but do not force text or emit pending bincls. This is
used by dbxout_symbol_location, which needs to do something else. */
static void
dbxout_begin_complex_stabs_noforcetext (void)
{
/* APPLE LOCAL ss2 */
fputs (ASM_STABS_OP, dbx_out_file);
/* APPLE LOCAL ss2 */
putc ('"', dbx_out_file);
gcc_assert (stabstr_last_contin_point == 0);
}
/* Add CHR, a single character, to the string being built. */
#define stabstr_C(chr) obstack_1grow (&stabstr_ob, chr)
/* Add STR, a normal C string, to the string being built. */
#define stabstr_S(str) obstack_grow (&stabstr_ob, str, strlen(str))
/* Add the text of ID, an IDENTIFIER_NODE, to the string being built. */
/* APPLE LOCAL begin 4310696 */
static void
stabstr_I (tree id)
{
if ((strcmp (lang_hooks.name, "GNU C++") == 0
|| strcmp (lang_hooks.name, "GNU Objective-C++") == 0)
&& IDENTIFIER_LENGTH (id) > 2
&& strncmp ("$_", IDENTIFIER_POINTER (id), 2) == 0)
obstack_grow (&stabstr_ob, "$_", 2);
else
obstack_grow (&stabstr_ob, IDENTIFIER_POINTER (id), IDENTIFIER_LENGTH (id));
}
/* APPLE LOCAL end 4310696 */
/* Add NUM, a signed decimal number, to the string being built. */
static void
stabstr_D (HOST_WIDE_INT num)
{
char buf[64];
char *p = buf + sizeof buf;
unsigned int unum;
if (num == 0)
{
stabstr_C ('0');
return;
}
if (num < 0)
{
stabstr_C ('-');
unum = -num;
}
else
unum = num;
NUMBER_FMT_LOOP (p, unum, 10);
obstack_grow (&stabstr_ob, p, (buf + sizeof buf) - p);
}
/* Add NUM, an unsigned decimal number, to the string being built. */
static void
stabstr_U (unsigned HOST_WIDE_INT num)
{
char buf[64];
char *p = buf + sizeof buf;
if (num == 0)
{
stabstr_C ('0');
return;
}
NUMBER_FMT_LOOP (p, num, 10);
obstack_grow (&stabstr_ob, p, (buf + sizeof buf) - p);
}
/* Add CST, an INTEGER_CST tree, to the string being built as an
unsigned octal number. This routine handles values which are
larger than a single HOST_WIDE_INT. */
static void
stabstr_O (tree cst)
{
unsigned HOST_WIDE_INT high = TREE_INT_CST_HIGH (cst);
unsigned HOST_WIDE_INT low = TREE_INT_CST_LOW (cst);
char buf[128];
char *p = buf + sizeof buf;
/* GDB wants constants with no extra leading "1" bits, so
we need to remove any sign-extension that might be
present. */
{
const unsigned int width = TYPE_PRECISION (TREE_TYPE (cst));
if (width == HOST_BITS_PER_WIDE_INT * 2)
;
else if (width > HOST_BITS_PER_WIDE_INT)
high &= (((HOST_WIDE_INT) 1 << (width - HOST_BITS_PER_WIDE_INT)) - 1);
else if (width == HOST_BITS_PER_WIDE_INT)
high = 0;
else
high = 0, low &= (((HOST_WIDE_INT) 1 << width) - 1);
}
/* Leading zero for base indicator. */
stabstr_C ('0');
/* If the value is zero, the base indicator will serve as the value
all by itself. */
if (high == 0 && low == 0)
return;
/* If the high half is zero, we need only print the low half normally. */
if (high == 0)
NUMBER_FMT_LOOP (p, low, 8);
else
{
/* When high != 0, we need to print enough zeroes from low to
give the digits from high their proper place-values. Hence
NUMBER_FMT_LOOP cannot be used. */
const int n_digits = HOST_BITS_PER_WIDE_INT / 3;
int i;
for (i = 1; i <= n_digits; i++)
{
unsigned int digit = low % 8;
low /= 8;
*--p = '0' + digit;
}
/* Octal digits carry exactly three bits of information. The
width of a HOST_WIDE_INT is not normally a multiple of three.
Therefore, the next digit printed probably needs to carry
information from both low and high. */
if (HOST_BITS_PER_WIDE_INT % 3 != 0)
{
const int n_leftover_bits = HOST_BITS_PER_WIDE_INT % 3;
const int n_bits_from_high = 3 - n_leftover_bits;
const unsigned HOST_WIDE_INT
low_mask = (((unsigned HOST_WIDE_INT)1) << n_leftover_bits) - 1;
const unsigned HOST_WIDE_INT
high_mask = (((unsigned HOST_WIDE_INT)1) << n_bits_from_high) - 1;
unsigned int digit;
/* At this point, only the bottom n_leftover_bits bits of low
should be set. */
gcc_assert (!(low & ~low_mask));
digit = (low | ((high & high_mask) << n_leftover_bits));
high >>= n_bits_from_high;
*--p = '0' + digit;
}
/* Now we can format high in the normal manner. However, if
the only bits of high that were set were handled by the
digit split between low and high, high will now be zero, and
we don't want to print extra digits in that case. */
if (high)
NUMBER_FMT_LOOP (p, high, 8);
}
obstack_grow (&stabstr_ob, p, (buf + sizeof buf) - p);
}
/* Called whenever it is safe to break a stabs string into multiple
.stabs directives. If the current string has exceeded the limit
set by DBX_CONTIN_LENGTH, mark the current position in the buffer
as a continuation point by inserting DBX_CONTIN_CHAR (doubled if
it is a backslash) and a null character. */
static inline void
stabstr_continue (void)
{
if (DBX_CONTIN_LENGTH > 0
&& obstack_object_size (&stabstr_ob) - stabstr_last_contin_point
> DBX_CONTIN_LENGTH)
{
if (DBX_CONTIN_CHAR == '\\')
obstack_1grow (&stabstr_ob, '\\');
obstack_1grow (&stabstr_ob, DBX_CONTIN_CHAR);
obstack_1grow (&stabstr_ob, '\0');
stabstr_last_contin_point = obstack_object_size (&stabstr_ob);
}
}
#define CONTIN stabstr_continue ()
/* Macro subroutine of dbxout_finish_complex_stabs, which emits
all of the arguments to the .stabs directive after the string.
Overridden by xcoffout.h. CODE is the stabs code for this symbol;
LINE is the source line to write into the desc field (in extended
mode); SYM is the symbol itself.
ADDR, LABEL, and NUMBER are three different ways to represent the
stabs value field. At most one of these should be nonzero.
ADDR is used most of the time; it represents the value as an
RTL address constant.
LABEL is used (currently) only for N_CATCH stabs; it represents
the value as a string suitable for assemble_name.
NUMBER is used when the value is an offset from an implicit base
pointer (e.g. for a stack variable), or an index (e.g. for a
register variable). It represents the value as a decimal integer. */
#ifndef DBX_FINISH_STABS
#define DBX_FINISH_STABS(SYM, CODE, LINE, ADDR, LABEL, NUMBER) \
do { \
int line_ = use_gnu_debug_info_extensions ? LINE : 0; \
/* APPLE LOCAL begin ss2 */ \
dbxout_int (CODE); \
fputs (",0,", dbx_out_file); \
dbxout_int (line_); \
putc (',', dbx_out_file); \
if (ADDR) \
output_addr_const (dbx_out_file, ADDR); \
else if (LABEL) \
assemble_name (dbx_out_file, LABEL); \
else \
dbxout_int (NUMBER); \
putc ('\n', dbx_out_file); \
/* APPLE LOCAL end ss2 */ \
} while (0)
#endif
/* Finish the emission of a complex .stabs directive. When DBX_CONTIN_LENGTH
is zero, this has only to emit the close quote and the remainder of
the arguments. When it is nonzero, the string has been marshalled in
stabstr_ob, and this routine is responsible for breaking it up into
DBX_CONTIN_LENGTH-sized chunks.
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,
rtx addr, const char *label, int number)
{
int line ATTRIBUTE_UNUSED;
char *str;
size_t len;
line = sym ? DECL_SOURCE_LINE (sym) : 0;
if (DBX_CONTIN_LENGTH > 0)
{
char *chunk;
size_t chunklen;
/* Nul-terminate the growing string, then get its size and
address. */
obstack_1grow (&stabstr_ob, '\0');
len = obstack_object_size (&stabstr_ob);
chunk = str = obstack_finish (&stabstr_ob);
/* Within the buffer are a sequence of NUL-separated strings,
each of which is to be written out as a separate stab
directive. */
for (;;)
{
chunklen = strlen (chunk);
/* APPLE LOCAL ss2 */
fwrite (chunk, 1, chunklen, dbx_out_file);
/* APPLE LOCAL ss2 */
fputs ("\",", dbx_out_file);
/* Must add an extra byte to account for the NUL separator. */
chunk += chunklen + 1;
len -= chunklen + 1;
/* Only put a line number on the last stab in the sequence. */
DBX_FINISH_STABS (sym, code, len == 0 ? line : 0,
addr, label, number);
if (len == 0)
break;
/* APPLE LOCAL ss2 */
fputs (ASM_STABS_OP, dbx_out_file);
/* APPLE LOCAL ss2 */
putc ('"', dbx_out_file);
}
stabstr_last_contin_point = 0;
}
else
{
/* No continuations - we can put the whole string out at once.
It is faster to augment the string with the close quote and
comma than to do a two-character fputs. */
obstack_grow (&stabstr_ob, "\",", 2);
len = obstack_object_size (&stabstr_ob);
str = obstack_finish (&stabstr_ob);
/* APPLE LOCAL ss2 */
fwrite (str, 1, len, dbx_out_file);
DBX_FINISH_STABS (sym, code, line, addr, label, number);
}
obstack_free (&stabstr_ob, str);
}
#if defined (DBX_DEBUGGING_INFO)
static void
dbxout_function_end (tree decl)
{
char lscope_label_name[100];
/* APPLE LOCAL dbxout_type rewrite. */
dbxout_flush_type_queue ();
/* The Lscope label must be emitted even if we aren't doing anything
else; dbxout_block needs it. */
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);
/* APPLE LOCAL ss2 */
targetm.asm_out.internal_label (dbx_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))
return;
/* By convention, GCC will mark the end of a function with an N_FUN
symbol and an empty string. */
#ifdef DBX_OUTPUT_NFUN
/* APPLE LOCAL ss2 */
DBX_OUTPUT_NFUN (dbx_out_file, lscope_label_name, current_function_decl);
#else
dbxout_begin_empty_stabs (N_FUN);
dbxout_stab_value_label_diff (lscope_label_name,
XSTR (XEXP (DECL_RTL (current_function_decl), 0), 0));
#endif
/* APPLE LOCAL begin Essential Symbols */
if (!NO_DBX_BNSYM_ENSYM)
{
dbxout_flush_type_queue ();
dbxout_stabd (N_ENSYM, 0);
}
/* APPLE LOCAL end Essential Symbols */
}
#endif /* DBX_DEBUGGING_INFO */
/* Get lang description for N_SO stab. */
static unsigned int ATTRIBUTE_UNUSED
get_lang_number (void)
{
const char *language_string = lang_hooks.name;
if (strcmp (language_string, "GNU C") == 0)
return N_SO_C;
else if (strcmp (language_string, "GNU C++") == 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)
return N_SO_FORTRAN90; /* CHECKME */
else if (strcmp (language_string, "GNU Pascal") == 0)
return N_SO_PASCAL;
else if (strcmp (language_string, "GNU Objective-C") == 0)
return N_SO_OBJC;
/* APPLE LOCAL begin mainline */
else if (strcmp (language_string, "GNU Objective-C++") == 0)
return N_SO_OBJCPLUS;
/* APPLE LOCAL end mainline */
else
return 0;
}
/* At the beginning of compilation, start writing the symbol table.
Initialize `typevec' and output the standard data types of C. */
static void
dbxout_init (const char *input_file_name)
{
char ltext_label_name[100];
bool used_ltext_label_name = false;
tree syms = lang_hooks.decls.getdecls ();
typevec_len = 100;
typevec = ggc_calloc (typevec_len, sizeof typevec[0]);
/* APPLE LOCAL begin dbxout_type rewrite. */
q_typevec_len = 100;
q_typevec = ggc_calloc (q_typevec_len, sizeof q_typevec[0]);
/* APPLE LOCAL end dbxout_type rewrite. */
/* APPLE LOCAL begin ss2 */
/* Open dbx_out_file */
if (flag_save_repository
&& flag_pch_file
&& !flag_debug_only_used_symbols
&& asm_file_name
&& strcmp (asm_file_name, "-"))
{
dbx_out_file = fopen (asm_file_name, "w+b");
if (dbx_out_file == 0)
fatal_error ("can%'t open %s for writing: %m", asm_file_name);
}
else
dbx_out_file = asm_out_file;
/* APPLE LOCAL end ss2 */
/* stabstr_ob contains one string, which will be just fine with
1-byte alignment. */
obstack_specify_allocation (&stabstr_ob, 0, 1, xmalloc, free);
/* Convert Ltext 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 (ltext_label_name, "Ltext", 0);
/* Put the current working directory in an N_SO symbol. */
if (use_gnu_debug_info_extensions && !NO_DBX_MAIN_SOURCE_DIRECTORY)
{
static const char *cwd;
if (!cwd)
{
cwd = get_src_pwd ();
if (cwd[0] == '\0')
cwd = "/";
else if (!IS_DIR_SEPARATOR (cwd[strlen (cwd) - 1]))
cwd = concat (cwd, "/", NULL);
}
#ifdef DBX_OUTPUT_MAIN_SOURCE_DIRECTORY
/* APPLE LOCAL ss2 */
DBX_OUTPUT_MAIN_SOURCE_DIRECTORY (dbx_out_file, cwd);
#else /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */
dbxout_begin_simple_stabs_desc (cwd, N_SO, get_lang_number ());
dbxout_stab_value_label (ltext_label_name);
used_ltext_label_name = true;
#endif /* no DBX_OUTPUT_MAIN_SOURCE_DIRECTORY */
}
#ifdef DBX_OUTPUT_MAIN_SOURCE_FILENAME
/* APPLE LOCAL ss2 */
DBX_OUTPUT_MAIN_SOURCE_FILENAME (dbx_out_file, input_file_name);
#else
dbxout_begin_simple_stabs_desc (input_file_name, N_SO, get_lang_number ());
dbxout_stab_value_label (ltext_label_name);
used_ltext_label_name = true;
#endif
if (used_ltext_label_name)
{
text_section ();
/* APPLE LOCAL ss2 */
targetm.asm_out.internal_label (dbx_out_file, "Ltext", 0);
}
/* APPLE LOCAL begin symbol separation, dwarf 4386531 */
dbxout_begin_empty_stabs (N_OSO);
dbxout_stab_value_zero ();
/* APPLE LOCAL end symbol separation, dwarf 4386531 */
/* Emit an N_OPT stab to indicate that this file was compiled by GCC.
The string used is historical. */
#ifndef NO_DBX_GCC_MARKER
dbxout_begin_simple_stabs ("gcc2_compiled.", N_OPT);
dbxout_stab_value_zero ();
#endif
base_input_file = lastfile = input_file_name;
next_type_number = 1;
#ifdef DBX_USE_BINCL
current_file = xmalloc (sizeof *current_file);
current_file->next = NULL;
current_file->file_number = 0;
current_file->next_type_number = 1;
next_file_number = 1;
current_file->prev = NULL;
current_file->bincl_status = BINCL_NOT_REQUIRED;
current_file->pending_bincl_name = NULL;
#endif
/* APPLE LOCAL begin gdb only used symbols */
#ifndef DBX_ONLY_USED_SYMBOLS
dbxout_symbol (TYPE_NAME (integer_type_node), 0);
dbxout_symbol (TYPE_NAME (char_type_node), 0);
#endif
/* APPLE LOCAL end gdb only used symbols */
/* Get all permanent types that have typedef names, and output them
all, except for those already output. Some language front ends
put these declarations in the top-level scope; some do not;
the latter are responsible for calling debug_hooks->type_decl from
their record_builtin_type function. */
dbxout_typedefs (syms);
if (preinit_symbols)
{
tree t;
for (t = nreverse (preinit_symbols); t; t = TREE_CHAIN (t))
dbxout_symbol (TREE_VALUE (t), 0);
preinit_symbols = 0;
}
/* APPLE LOCAL begin dbxout_type rewrite. */
dbxout_queue_type (void_type_node);
dbxout_flush_type_queue ();
/* APPLE LOCAL end dbxout_type rewrite. */
/* APPLE LOCAL 4215975 */
anon_place_holder = get_identifier ("__anon__");
}
/* Output any typedef names for types described by TYPE_DECLs in SYMS. */
static void
dbxout_typedefs (tree syms)
{
for (; syms != NULL_TREE; syms = TREE_CHAIN (syms))
{
if (TREE_CODE (syms) == TYPE_DECL)
{
tree type = TREE_TYPE (syms);
if (TYPE_NAME (type)
&& TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
&& COMPLETE_OR_VOID_TYPE_P (type)
&& ! TREE_ASM_WRITTEN (TYPE_NAME (type)))
dbxout_symbol (TYPE_NAME (type), 0);
}
}
}
#ifdef DBX_USE_BINCL
/* Emit BINCL stab using given name. */
static void
emit_bincl_stab (const char *name)
{
/* APPLE LOCAL ss2 */
static unsigned int dbx_checksum;
dbxout_begin_simple_stabs (name, N_BINCL);
/* APPLE LOCAL begin ss2 */
if (flag_save_repository
&& flag_pch_file
&& !flag_debug_only_used_symbols)
{
/* Include dummy checksum with BINCL stab while creating
symbol repoistory. Add corrosponding EXCL stab in
asm file. */
dbx_checksum = crc32_string (42, name);
fprintf (asm_out_file, "%s", ASM_STABS_OP);
output_quoted_string (asm_out_file, name);
fprintf (asm_out_file, ",%d,0,0,%d\n", N_EXCL, dbx_checksum);
fprintf (dbx_out_file, "%d\n", dbx_checksum);
}
else
dbxout_stab_value_zero ();
/* APPLE LOCAL end ss2 */
}
/* If there are pending bincls then it is time to emit all of them. */
static inline void
emit_pending_bincls_if_required (void)
{
if (pending_bincls)
emit_pending_bincls ();
}
/* Emit all pending bincls. */
static void
emit_pending_bincls (void)
{
struct dbx_file *f = current_file;
/* Find first pending bincl. */
while (f->bincl_status == BINCL_PENDING)
f = f->next;
/* Now emit all bincls. */
f = f->prev;
while (f)
{
if (f->bincl_status == BINCL_PENDING)
{
emit_bincl_stab (f->pending_bincl_name);
/* Update file number and status. */
f->file_number = next_file_number++;
f->bincl_status = BINCL_PROCESSED;
}
if (f == current_file)
break;
f = f->prev;
}
/* All pending bincls have been emitted. */
pending_bincls = 0;
}
#else
static inline void
emit_pending_bincls_if_required (void) {}
#endif
/* Change to reading from a new source file. Generate a N_BINCL stab. */
static void
dbxout_start_source_file (unsigned int line ATTRIBUTE_UNUSED,
const char *filename ATTRIBUTE_UNUSED)
{
#ifdef DBX_USE_BINCL
struct dbx_file *n = xmalloc (sizeof *n);
/* APPLE LOCAL dbxout_type rewrite. */
dbxout_flush_type_queue ();
n->next = current_file;
n->next_type_number = 1;
/* 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;
pending_bincls = 1;
current_file = n;
#endif
}
/* Revert to reading a previous source file. Generate a N_EINCL stab. */
static void
dbxout_end_source_file (unsigned int line ATTRIBUTE_UNUSED)
{
/* APPLE LOCAL dbxout_type rewrite. */
dbxout_flush_type_queue ();
#ifdef DBX_USE_BINCL
/* APPLE LOCAL begin 4547137 */
if (!current_file)
return;
/* APPLE LOCAL end 4547137 */
/* Emit EINCL stab only if BINCL is not pending. */
if (current_file->bincl_status == BINCL_PROCESSED)
{
dbxout_begin_stabn (N_EINCL);
dbxout_stab_value_zero ();
}
current_file->bincl_status = BINCL_NOT_REQUIRED;
current_file = current_file->next;
#endif
}
/* Handle a few odd cases that occur when trying to make PCH files work. */
static void
dbxout_handle_pch (unsigned at_end)
{
if (! at_end)
{
/* When using the PCH, this file will be included, so we need to output
a BINCL. */
dbxout_start_source_file (0, lastfile);
/* The base file when using the PCH won't be the same as
the base file when it's being generated. */
lastfile = NULL;
}
else
{
/* ... and an EINCL. */
dbxout_end_source_file (0);
/* Deal with cases where 'lastfile' was never actually changed. */
lastfile_is_base = lastfile == NULL;
}
}
#if defined (DBX_DEBUGGING_INFO)
/* Output debugging info to FILE to switch to sourcefile FILENAME. */
static void
dbxout_source_file (const char *filename)
{
if (lastfile == 0 && lastfile_is_base)
{
lastfile = base_input_file;
lastfile_is_base = 0;
}
if (filename && (lastfile == 0 || strcmp (filename, lastfile)))
{
/* Don't change section amid function. */
if (current_function_decl == NULL_TREE)
text_section ();
dbxout_begin_simple_stabs (filename, N_SOL);
dbxout_stab_value_internal_label ("Ltext", &source_label_number);
lastfile = filename;
}
}
/* Output N_BNSYM and line number symbol entry. */
static void
dbxout_begin_prologue (unsigned int lineno, const char *filename)
{
if (use_gnu_debug_info_extensions
&& !NO_DBX_FUNCTION_END
/* APPLE LOCAL Essential Symbols */
&& !NO_DBX_BNSYM_ENSYM)
dbxout_stabd (N_BNSYM, 0);
dbxout_source_line (lineno, filename);
}
/* 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_file (filename);
#ifdef DBX_OUTPUT_SOURCE_LINE
/* APPLE LOCAL ss2 */
DBX_OUTPUT_SOURCE_LINE (dbx_out_file, lineno, dbxout_source_line_counter);
#else
if (DBX_LINES_FUNCTION_RELATIVE)
{
rtx begin_label = XEXP (DECL_RTL (current_function_decl), 0);
dbxout_begin_stabn_sline (lineno);
dbxout_stab_value_internal_label_diff ("LM", &dbxout_source_line_counter,
XSTR (begin_label, 0));
}
else
dbxout_stabd (N_SLINE, lineno);
#endif
}
/* Describe the beginning of an internal block within a function. */
static void
dbxout_begin_block (unsigned int line ATTRIBUTE_UNUSED, unsigned int n)
{
emit_pending_bincls_if_required ();
/* APPLE LOCAL ss2 */
targetm.asm_out.internal_label (dbx_out_file, "LBB", n);
}
/* Describe the end line-number of an internal block within a function. */
static void
dbxout_end_block (unsigned int line ATTRIBUTE_UNUSED, unsigned int n)
{
emit_pending_bincls_if_required ();
/* APPLE LOCAL ss2 */
targetm.asm_out.internal_label (dbx_out_file, "LBE", n);
}
/* Output dbx data for a function definition.
This includes a definition of the function name itself (a symbol),
definitions of the parameters (locating them in the parameter list)
and then output the block that makes up the function's body
(including all the auto variables of the function). */
static void
dbxout_function_decl (tree decl)
{
emit_pending_bincls_if_required ();
#ifndef DBX_FUNCTION_FIRST
dbxout_begin_function (decl);
#endif
dbxout_block (DECL_INITIAL (decl), 0, DECL_ARGUMENTS (decl));
dbxout_function_end (decl);
}
#endif /* DBX_DEBUGGING_INFO */
/* Debug information for a global DECL. Called from toplev.c after
compilation proper has finished. */
static void
dbxout_global_decl (tree decl)
{
if (TREE_CODE (decl) == VAR_DECL
&& ! DECL_EXTERNAL (decl)
&& DECL_RTL_SET_P (decl)) /* Not necessary? */
{
int saved_tree_used = TREE_USED (decl);
TREE_USED (decl) = 1;
dbxout_symbol (decl, 0);
TREE_USED (decl) = saved_tree_used;
}
}
/* This is just a function-type adapter; dbxout_symbol does exactly
what we want but returns an int. */
static void
dbxout_type_decl (tree decl, int local)
{
dbxout_symbol (decl, local);
}
/* At the end of compilation, finish writing the symbol table.
The default is to call debug_free_queue but do nothing else. */
static void
dbxout_finish (const char *filename ATTRIBUTE_UNUSED)
{
/* APPLE LOCAL dbxout_type rewrite. */
dbxout_free_type_queue ();
#ifdef DBX_OUTPUT_MAIN_SOURCE_FILE_END
/* APPLE LOCAL ss2 */
DBX_OUTPUT_MAIN_SOURCE_FILE_END (dbx_out_file, filename);
#elif defined DBX_OUTPUT_NULL_N_SO_AT_MAIN_SOURCE_FILE_END
{
text_section ();
dbxout_begin_empty_stabs (N_SO);
dbxout_stab_value_internal_label ("Letext", 0);
}
#endif
debug_free_queue ();
/* APPLE LOCAL begin ss2 */
if (flag_save_repository
&& flag_pch_file && !flag_debug_only_used_symbols)
{
/* Close dbx_out_file now here. toplev.c takes care of asm file. */
if (ferror (dbx_out_file) != 0)
fatal_error ("error writing to %s: %m", asm_file_name);
if (fclose (dbx_out_file) != 0)
fatal_error ("error closing %s: %m", asm_file_name);
}
}
/* APPLE LOCAL end ss2 */
/* APPLE LOCAL begin dbxout_type rewrite. */
/* If TYPE is a qualified type then note this info in
q_typevec. */
static void
dbxout_note_q_type (tree type)
{
tree ttype = TREE_TYPE (type);
int t_number = TYPE_SYMTAB_ADDRESS (type);
int tt_number = TYPE_SYMTAB_ADDRESS (ttype);
int q_number = typevec[t_number].q_type_number;
/* consts and volatiles are not yet handled. */
if (TYPE_QUALS (type))
return;
if (q_number == 0)
q_number = dbxout_next_q_type_number ();
switch (TREE_CODE (type))
{
case FUNCTION_TYPE:
if (q_typevec[q_number].function_type == 0)
{
q_typevec[q_number].function_type = t_number;
typevec[tt_number].q_type_number = q_number;
}
break;
case FILE_TYPE:
if (q_typevec[q_number].file_type == 0)
{
q_typevec[q_number].file_type = t_number;
typevec[tt_number].q_type_number = q_number;
}
break;
case POINTER_TYPE:
if (q_typevec[q_number].pointer_type == 0)
{
q_typevec[q_number].pointer_type = t_number;
typevec[tt_number].q_type_number = q_number;
}
break;
case REFERENCE_TYPE:
if (q_typevec[q_number].reference_type == 0)
{
q_typevec[q_number].reference_type = t_number;
typevec[tt_number].q_type_number = q_number;
}
break;
default:
gcc_unreachable ();
break;
}
}
/* Returned q_typevec index number for TYPE if it is
reusuable.
If TYPE is a FUNCTION_TYPE of VOID_TYPE and if we
have already seen another FUNCTION_TYPE OTHER_TYPE whose
type is also VOID_TYPE then we can reuse OTHER_TYPE's type
number for TYPE. */
static int
dbxout_reusable_type (tree type)
{
tree t;
int q_no = 0;
/* consts and volatiles are not yet handled. */
if (TYPE_QUALS (type))
return 0;
t = TREE_TYPE (type);
if (t && TYPE_SYMTAB_ADDRESS (t) == 0)
return 0;
switch (TREE_CODE (type))
{
case FUNCTION_TYPE:
q_no = typevec[TYPE_SYMTAB_ADDRESS (t)].q_type_number;
if (q_no && q_typevec[q_no].function_type)
return q_typevec[q_no].function_type;
break;
case FILE_TYPE:
q_no = typevec[TYPE_SYMTAB_ADDRESS (t)].q_type_number;
if (q_no && q_typevec[q_no].file_type)
return q_typevec[q_no].file_type;
break;
case POINTER_TYPE:
q_no = typevec[TYPE_SYMTAB_ADDRESS (t)].q_type_number;
if (q_no && q_typevec[q_no].pointer_type)
return q_typevec[q_no].pointer_type;
break;
case REFERENCE_TYPE:
q_no = typevec[TYPE_SYMTAB_ADDRESS (t)].q_type_number;
if (q_no && q_typevec[q_no].reference_type)
return q_typevec[q_no].reference_type;
break;
default:
break;
}
return 0;
}
/* APPLE LOCAL end dbxout_type rewrite. */
/* Output the index of a type. */
static void
dbxout_type_index (tree type)
{
/* APPLE LOCAL begin dbxout_type rewrite. */
struct typeinfo *t = NULL;
if (TYPE_SYMTAB_ADDRESS (type) == 0)
{
int r = dbxout_reusable_type (type);
if (r)
TYPE_SYMTAB_ADDRESS (type) = r;
dbxout_next_type_number (type);
}
#ifndef DBX_USE_BINCL
stabstr_D (TYPE_SYMTAB_ADDRESS (type));
#else
t = &typevec[TYPE_SYMTAB_ADDRESS (type)];
/* APPLE LOCAL end dbxout_type rewrite. */
stabstr_C ('(');
stabstr_D (t->file_number);
stabstr_C (',');
stabstr_D (t->type_number);
stabstr_C (')');
#endif
}
/* Used in several places: evaluates to '0' for a private decl,
'1' for a protected decl, '2' for a public decl. */
#define DECL_ACCESSIBILITY_CHAR(DECL) \
(TREE_PRIVATE (DECL) ? '0' : TREE_PROTECTED (DECL) ? '1' : '2')
/* Subroutine of `dbxout_type'. Output the type fields of TYPE.
This must be a separate function because anonymous unions require
recursive calls. */
static void
dbxout_type_fields (tree type)
{
tree tem;
/* 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))
{
/* If one of the nodes is an error_mark or its type is then
return early. */
if (tem == error_mark_node || TREE_TYPE (tem) == error_mark_node)
return;
/* Omit here local type decls until we know how to support them. */
if (TREE_CODE (tem) == TYPE_DECL
/* Omit here the nameless fields that are used to skip bits. */
|| DECL_IGNORED_P (tem)
/* Omit fields whose position or size are variable or too large to
represent. */
|| (TREE_CODE (tem) == FIELD_DECL
&& (! host_integerp (bit_position (tem), 0)
|| ! DECL_SIZE (tem)
|| ! host_integerp (DECL_SIZE (tem), 1))))
continue;
else if (TREE_CODE (tem) != CONST_DECL)
{
/* Continue the line if necessary,
but not before the first field. */
if (tem != TYPE_FIELDS (type))
CONTIN;
/* APPLE LOCAL begin 4174833 */
/* If we are outputting fields for an Objective-C class, we need
to output all fields in superclasses as well; gdb does not
currently grok Objective-C type hierarchies. */
else if (TREE_CODE (TREE_TYPE (tem)) == RECORD_TYPE
&& !strncmp (lang_hooks.name, "GNU Objective-C", 15))
{
/* NB: Non-C-based languages will need to provide a stub
for objc_is_class_name(). */
extern tree objc_is_class_name (tree);
if (objc_is_class_name (TYPE_NAME (type))
&& objc_is_class_name (TYPE_NAME (TREE_TYPE (tem))))
{
dbxout_type_fields (TREE_TYPE (tem));
continue;
}
}
/* APPLE LOCAL end 4174833 */
if (DECL_NAME (tem))
stabstr_I (DECL_NAME (tem));
stabstr_C (':');
if (use_gnu_debug_info_extensions
&& (TREE_PRIVATE (tem) || TREE_PROTECTED (tem)
|| TREE_CODE (tem) != FIELD_DECL))
{
have_used_extensions = 1;
stabstr_C ('/');
stabstr_C (DECL_ACCESSIBILITY_CHAR (tem));
}
dbxout_type ((TREE_CODE (tem) == FIELD_DECL
&& DECL_BIT_FIELD_TYPE (tem))
? DECL_BIT_FIELD_TYPE (tem) : TREE_TYPE (tem), 0);
if (TREE_CODE (tem) == VAR_DECL)
{
if (TREE_STATIC (tem) && use_gnu_debug_info_extensions)
{
tree name = DECL_ASSEMBLER_NAME (tem);
have_used_extensions = 1;
stabstr_C (':');
stabstr_I (name);
stabstr_C (';');
}
else
/* If TEM is non-static, GDB won't understand it. */
stabstr_S (",0,0;");
}
else
{
stabstr_C (',');
stabstr_D (int_bit_position (tem));
stabstr_C (',');
stabstr_D (tree_low_cst (DECL_SIZE (tem), 1));
stabstr_C (';');
}
}
}
}
/* Subroutine of `dbxout_type_methods'. Output debug info about the
method described DECL. */
static void
dbxout_type_method_1 (tree decl)
{
char c1 = 'A', c2;
if (TREE_CODE (TREE_TYPE (decl)) == FUNCTION_TYPE)
c2 = '?';
else /* it's a METHOD_TYPE. */
{
tree firstarg = TREE_VALUE (TYPE_ARG_TYPES (TREE_TYPE (decl)));
/* A for normal functions.
B for `const' member functions.
C for `volatile' member functions.
D for `const volatile' member functions. */
if (TYPE_READONLY (TREE_TYPE (firstarg)))
c1 += 1;
if (TYPE_VOLATILE (TREE_TYPE (firstarg)))
c1 += 2;
if (DECL_VINDEX (decl))
c2 = '*';
else
c2 = '.';
}
/* ??? Output the mangled name, which contains an encoding of the
method's type signature. May not be necessary anymore. */
stabstr_C (':');
stabstr_I (DECL_ASSEMBLER_NAME (decl));
stabstr_C (';');
stabstr_C (DECL_ACCESSIBILITY_CHAR (decl));
stabstr_C (c1);
stabstr_C (c2);
if (DECL_VINDEX (decl) && host_integerp (DECL_VINDEX (decl), 0))
{
stabstr_D (tree_low_cst (DECL_VINDEX (decl), 0));
stabstr_C (';');
dbxout_type (DECL_CONTEXT (decl), 0);
stabstr_C (';');
}
}
/* Subroutine of `dbxout_type'. Output debug info about the methods defined
in TYPE. */
static void
dbxout_type_methods (tree type)
{
/* C++: put out the method names and their parameter lists */
tree methods = TYPE_METHODS (type);
tree fndecl;
tree last;
if (methods == NULL_TREE)
return;
if (TREE_CODE (methods) != TREE_VEC)
fndecl = methods;
else if (TREE_VEC_ELT (methods, 0) != NULL_TREE)
fndecl = TREE_VEC_ELT (methods, 0);
else
fndecl = TREE_VEC_ELT (methods, 1);
while (fndecl)
{
int need_prefix = 1;
/* Group together all the methods for the same operation.
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))
/* Output the name of the field (after overloading), as
well as the name of the field before overloading, along
with its parameter list */
{
/* Skip methods that aren't FUNCTION_DECLs. (In C++, these
include TEMPLATE_DECLs.) The debugger doesn't know what
to do with such entities anyhow. */
if (TREE_CODE (fndecl) != FUNCTION_DECL)
continue;
CONTIN;
last = fndecl;
/* Also ignore abstract methods; those are only interesting to
the DWARF backends. */
if (DECL_IGNORED_P (fndecl) || DECL_ABSTRACT (fndecl))
continue;
/* Redundantly output the plain name, since that's what gdb
expects. */
if (need_prefix)
{
stabstr_I (DECL_NAME (fndecl));
stabstr_S ("::");
need_prefix = 0;
}
dbxout_type (TREE_TYPE (fndecl), 0);
dbxout_type_method_1 (fndecl);
}
if (!need_prefix)
stabstr_C (';');
}
}
/* Emit a "range" type specification, which has the form:
"r<index type>;<lower bound>;<upper bound>;".
TYPE is an INTEGER_TYPE. */
static void
dbxout_range_type (tree type)
{
stabstr_C ('r');
if (TREE_TYPE (type))
dbxout_type (TREE_TYPE (type), 0);
else if (TREE_CODE (type) != INTEGER_TYPE)
dbxout_type (type, 0); /* E.g. Pascal's ARRAY [BOOLEAN] of INTEGER */
else
{
/* Traditionally, we made sure 'int' was type 1, and builtin types
were defined to be sub-ranges of int. Unfortunately, this
does not allow us to distinguish true sub-ranges from integer
types. So, instead we define integer (non-sub-range) types as
sub-ranges of themselves. This matters for Chill. If this isn't
a subrange type, then we want to define it in terms of itself.
However, in C, this may be an anonymous integer type, and we don't
want to emit debug info referring to it. Just calling
dbxout_type_index won't work anyways, because the type hasn't been
defined yet. We make this work for both cases by checked to see
whether this is a defined type, referring to it if it is, and using
'int' otherwise. */
if (TYPE_SYMTAB_ADDRESS (type) != 0)
dbxout_type_index (type);
else
dbxout_type_index (integer_type_node);
}
stabstr_C (';');
if (TYPE_MIN_VALUE (type) != 0
&& host_integerp (TYPE_MIN_VALUE (type), 0))
{
if (print_int_cst_bounds_in_octal_p (type))
stabstr_O (TYPE_MIN_VALUE (type));
else
stabstr_D (tree_low_cst (TYPE_MIN_VALUE (type), 0));
}
else
stabstr_C ('0');
stabstr_C (';');
if (TYPE_MAX_VALUE (type) != 0
&& host_integerp (TYPE_MAX_VALUE (type), 0))
{
if (print_int_cst_bounds_in_octal_p (type))
stabstr_O (TYPE_MAX_VALUE (type));
else
stabstr_D (tree_low_cst (TYPE_MAX_VALUE (type), 0));
stabstr_C (';');
}
else
stabstr_S ("-1;");
}
/* APPLE LOCAL begin dbxout_type rewrite. */
/* Output a reference to a type.
If FLAG is zero then do not try to describe entire type definition.
Instead, queue the type for full type description.
If FLAG is nonzero then describe entire type.
Return TRUE if partial type description along with cross reference
is emitted. Return FALSE otherwise. */
static bool
dbxout_type (tree type, int flag)
{
tree main_variant;
/* If there was an input error and we don't really have a type, avoid
crashing and write something that is at least valid by
assuming `int'. */
if (type == error_mark_node)
type = integer_type_node;
/* Try to find the "main variant" of this type with the same name. */
if (TYPE_NAME (type) && TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
&& DECL_ORIGINAL_TYPE (TYPE_NAME (type)))
main_variant = TREE_TYPE (TYPE_NAME (type));
else
main_variant = TYPE_MAIN_VARIANT (type);
/* If we are not using extensions, stabs does not distinguish const and
volatile, so there is no need to make them separate types. */
if (!use_gnu_debug_info_extensions)
type = main_variant;
/* If TYPE_DECL_SUPPRESS_DEBUG is set then emit partial type only. */
if (TYPE_NAME (type)
&& TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
&& TYPE_DECL_SUPPRESS_DEBUG (TYPE_NAME (type))
&& flag == 1)
flag = 0;
if (flag == 1 || flag == 2)
dbxout_complete_type (type, main_variant);
else if ( flag == 0)
return dbxout_partial_type (type, main_variant);
else
gcc_unreachable ();
return false;
}
/* Emit partial type description. Queue actual type to describe it
entirely in new separate stab. Return true if type is cross referenced. */
static bool
dbxout_partial_type (tree type, tree main_variant)
{
bool result = false;
dbxout_type_index (type);
#ifdef DBX_TYPE_DEFINED
if (DBX_TYPE_DEFINED (type))
return result;
#endif
switch (typevec[TYPE_SYMTAB_ADDRESS (type)].status)
{
case TYPE_UNSEEN:
break;
case TYPE_XREF:
case TYPE_DEFINED:
case TYPE_QUEUED:
return result;
break;
}
#ifdef DBX_NO_XREFS
/* For systems where dbx output does not allow the `=xsNAME:' syntax,
leave the type-number completely undefined rather than output
a cross-reference. If we have already used GNU debug info extensions,
then it is OK to output a cross reference. This is necessary to get
proper C++ debug output. */
if ((TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE
|| TREE_CODE (type) == QUAL_UNION_TYPE
|| TREE_CODE (type) == ENUMERAL_TYPE)
&& ! use_gnu_debug_info_extensions)
/* We must use the same test here as we use twice below when deciding
whether to emit a cross-reference. */
if (dbxout_cross_ref_type_p (type))
{
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF;
result = true;
return result;
}
#endif
/* Handle const qualified types. */
if (TYPE_READONLY (type) > TYPE_READONLY (main_variant))
{
dbxout_queue_type (type);
return result;
}
/* Handle volatile qualified types. */
if (TYPE_VOLATILE (type) > TYPE_VOLATILE (main_variant))
{
dbxout_queue_type (type);
return result;
}
if (flag_debug_only_used_symbols
&& TYPE_NAME (type)
&& TREE_CODE (TYPE_NAME (type)) == TYPE_DECL)
{
tree tree_type = TREE_TYPE (TYPE_NAME (type));
tree orig_type = DECL_ORIGINAL_TYPE (TYPE_NAME (type));
if (tree_type)
{
switch (TREE_CODE (tree_type))
{
case ENUMERAL_TYPE:
case RECORD_TYPE:
case UNION_TYPE:
case QUAL_UNION_TYPE:
dbxout_next_type_number (tree_type);
typevec[TYPE_SYMTAB_ADDRESS (tree_type)].status = TYPE_XREF;
dbxout_type_xref (tree_type);
result = true;
if (orig_type
&& TYPE_STUB_DECL (orig_type)
&& ! DECL_IGNORED_P (TYPE_STUB_DECL (orig_type)))
debug_queue_symbol (TYPE_STUB_DECL (orig_type));
break;
default:
break;
}
}
if (orig_type)
dbxout_queue_type (orig_type);
dbxout_queue_type (type);
return result;
}
switch (TREE_CODE (type))
{
case VOID_TYPE:
case LANG_TYPE:
dbxout_void_type (type);
break;
case RECORD_TYPE:
case UNION_TYPE:
case QUAL_UNION_TYPE:
case ENUMERAL_TYPE:
/* Put the TYPE_DECL node pointed by TYPE_STUB_DECL into queue. */
if (TYPE_STUB_DECL (type)
&& DECL_P (TYPE_STUB_DECL (type))
&& ! DECL_IGNORED_P (TYPE_STUB_DECL (type)))
debug_queue_symbol (TYPE_STUB_DECL (type));
/* Handle original type, if any. */
if (main_variant != TYPE_MAIN_VARIANT (type))
{
tree orig_type = DECL_ORIGINAL_TYPE (TYPE_NAME (type));
if (flag_debug_only_used_symbols)
{
if (TYPE_STUB_DECL (orig_type)
&& !DECL_IGNORED_P (TYPE_STUB_DECL (orig_type)))
debug_queue_symbol (TYPE_STUB_DECL (orig_type));
}
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
dbxout_type_xref (orig_type);
dbxout_queue_type (orig_type);
return result;
}
dbxout_queue_type (type);
break;
case INTEGER_TYPE:
dbxout_integer_type (type);
break;
case REAL_TYPE:
dbxout_real_type (type);
break;
case CHAR_TYPE:
dbxout_char_type (type);
break;
case BOOLEAN_TYPE:
dbxout_boolean_type (type);
break;
case COMPLEX_TYPE:
dbxout_complex_type (type);
break;
case VECTOR_TYPE:
case ARRAY_TYPE:
case OFFSET_TYPE:
dbxout_queue_type (type);
break;
case POINTER_TYPE:
case FILE_TYPE:
case REFERENCE_TYPE:
case FUNCTION_TYPE:
dbxout_note_q_type (type);
dbxout_queue_type (type);
break;
case METHOD_TYPE:
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
if (use_gnu_debug_info_extensions)
{
have_used_extensions = 1;
stabstr_C ('#');
/* Write the argument types out longhand. */
dbxout_type (TYPE_METHOD_BASETYPE (type), 1);
stabstr_C (',');
dbxout_type (TREE_TYPE (type), 0);
dbxout_args (TYPE_ARG_TYPES (type));
stabstr_C (';');
}
else
/* Treat it as a function type. */
dbxout_type (TREE_TYPE (type), 1);
break;
default:
gcc_unreachable ();
}
return result;
}
/* Describe complete type definition. */
static void
dbxout_complete_type (tree type, tree main_variant)
{
tree tem;
bool vector_type = false;
dbxout_type_index (type);
#ifdef DBX_TYPE_DEFINED
if (DBX_TYPE_DEFINED (type))
return;
#endif
switch (typevec[TYPE_SYMTAB_ADDRESS (type)].status)
{
case TYPE_UNSEEN:
case TYPE_QUEUED:
break;
case TYPE_XREF:
/* If we have already had a cross reference,
and either that's all we want or that's the best we could do,
don't repeat the cross reference.
Sun dbx crashes if we do. */
if (!COMPLETE_TYPE_P (type)
/* No way in DBX fmt to describe a variable size. */
|| ! host_integerp (TYPE_SIZE (type), 1))
return;
break;
case TYPE_DEFINED:
return;
}
#ifdef DBX_NO_XREFS
/* For systems where dbx output does not allow the `=xsNAME:' syntax,
leave the type-number completely undefined rather than output
a cross-reference. If we have already used GNU debug info extensions,
then it is OK to output a cross reference. This is necessary to get
proper C++ debug output. */
if ((TREE_CODE (type) == RECORD_TYPE || TREE_CODE (type) == UNION_TYPE
|| TREE_CODE (type) == QUAL_UNION_TYPE
|| TREE_CODE (type) == ENUMERAL_TYPE)
&& ! use_gnu_debug_info_extensions)
/* We must use the same test here as we use twice below when deciding
whether to emit a cross-reference. */
if (dbxout_cross_ref_type_p (type))
{
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF;
return;
}
#endif
/* Handle const qualified types. */
if (TYPE_READONLY (type) > TYPE_READONLY (main_variant))
{
tree ttype;
stabstr_C ('=');
stabstr_C ('k');
ttype = build_type_variant (type, 0, TYPE_VOLATILE (type)); /* ??? */
dbxout_next_type_number (ttype);
dbxout_type_index (ttype);
dbxout_queue_type (ttype);
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
return;
}
/* Handle volatile qualified types. */
if (TYPE_VOLATILE (type) > TYPE_VOLATILE (main_variant))
{
tree ttype;
stabstr_C ('=');
/* In Objective-C, EH handling mechanism volatizes variables.
It is implementation detail and no need to put that info
into stabs. This is true for Objective-C++ also. strncmp
check validates both languages. */
if (strncmp (lang_hooks.name, "GNU Objective-C", 15)
|| !lookup_attribute ("objc_volatilized", TYPE_ATTRIBUTES (type)))
stabstr_C ('B');
ttype = build_type_variant (type, 0, TYPE_READONLY (type)); /* ??? */
dbxout_next_type_number (ttype);
dbxout_type_index (ttype);
dbxout_queue_type (ttype);
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
return;
}
/* If there is another, original type available for this type then
just emit type index number and queue original type for now. */
if (TYPE_NAME (type)
&& TREE_CODE (TYPE_NAME (type)) == TYPE_DECL
&& DECL_ORIGINAL_TYPE (TYPE_NAME (type)))
{
tree orig_type = DECL_ORIGINAL_TYPE (TYPE_NAME (type));
stabstr_C ('=');
dbxout_type_index (orig_type);
dbxout_queue_type (orig_type);
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
return;
}
switch (TREE_CODE (type))
{
case VOID_TYPE:
case LANG_TYPE:
dbxout_void_type (type);
break;
case POINTER_TYPE:
dbxout_pointer_type (type);
break;
case RECORD_TYPE:
case UNION_TYPE:
case QUAL_UNION_TYPE:
{
tree binfo = TYPE_BINFO (type);
/* If TYPE_STUB_DECL is set and not ignored than it consider it as a used
symbol and put it in symbol queue. */
if (TYPE_STUB_DECL (type)
&& DECL_P (TYPE_STUB_DECL (type))
&& ! DECL_IGNORED_P (TYPE_STUB_DECL (type))
&& flag_debug_only_used_symbols)
debug_queue_symbol (TYPE_STUB_DECL (type));
if (!COMPLETE_TYPE_P (type)
/* No way in DBX fmt to describe a variable size. */
|| ! host_integerp (TYPE_SIZE (type), 1))
{
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF;
if (use_gnu_debug_info_extensions)
dbxout_type_xref (type);
return;
}
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
/* Identify record or union, and print its size. */
stabstr_C ((TREE_CODE (type) == RECORD_TYPE) ? 's' : 'u');
stabstr_D (int_size_in_bytes (type));
/* APPLE LOCAL begin 4174833 */
/* If we are outputting fields for an Objective-C class, we must
not output any references to superclasses; gdb does not
currently grok Objective-C type hierarchies. */
if (TREE_CODE (type) == RECORD_TYPE
&& !strncmp (lang_hooks.name, "GNU Objective-C", 15))
{
/* NB: Non-C-based languages will need to provide a stub
for objc_is_class_name(). */
extern tree objc_is_class_name (tree);
if (objc_is_class_name (TYPE_NAME (type)))
binfo = NULL_TREE;
}
/* APPLE LOCAL end 4174833 */
if (binfo)
{
int i;
tree child;
VEC (tree) *accesses = BINFO_BASE_ACCESSES (binfo);
if (use_gnu_debug_info_extensions)
{
if (BINFO_N_BASE_BINFOS (binfo))
{
have_used_extensions = 1;
stabstr_C ('!');
stabstr_U (BINFO_N_BASE_BINFOS (binfo));
stabstr_C (',');
}
}
for (i = 0; BINFO_BASE_ITERATE (binfo, i, child); i++)
{
tree access = (accesses ? VEC_index (tree, accesses, i)
: access_public_node);
if (use_gnu_debug_info_extensions)
{
have_used_extensions = 1;
stabstr_C (BINFO_VIRTUAL_P (child) ? '1' : '0');
stabstr_C (access == access_public_node ? '2' :
access == access_protected_node
? '1' :'0');
if (BINFO_VIRTUAL_P (child)
/* APPLE LOCAL begin 4172150 */
&& (strcmp (lang_hooks.name, "GNU C++") == 0
|| strcmp (lang_hooks.name, "GNU Objective-C++") == 0))
/* APPLE LOCAL end 4172150 */
/* For a virtual base, print the (negative)
offset within the vtable where we must look
to find the necessary adjustment. */
stabstr_D
(tree_low_cst (BINFO_VPTR_FIELD (child), 0)
* BITS_PER_UNIT);
else
stabstr_D (tree_low_cst (BINFO_OFFSET (child), 0)
* BITS_PER_UNIT);
stabstr_C (',');
if (!dbxout_type (BINFO_TYPE (child), 0))
dbxout_type_xref (BINFO_TYPE (child));
stabstr_C (';');
}
else
{
/* Print out the base class information with
fields which have the same names at the types
they hold. */
dbxout_type_name (BINFO_TYPE (child));
stabstr_C (':');
dbxout_type (BINFO_TYPE (child), 0);
stabstr_C (',');
stabstr_D (tree_low_cst (BINFO_OFFSET (child), 0)
* BITS_PER_UNIT);
stabstr_C (',');
stabstr_D
(tree_low_cst (TYPE_SIZE (BINFO_TYPE (child)), 0)
* BITS_PER_UNIT);
stabstr_C (';');
}
}
}
/* Write out the field declarations. */
dbxout_type_fields (type);
if (use_gnu_debug_info_extensions && TYPE_METHODS (type) != NULL_TREE)
{
have_used_extensions = 1;
dbxout_type_methods (type);
}
stabstr_C (';');
if (use_gnu_debug_info_extensions && TREE_CODE (type) == RECORD_TYPE
/* Avoid the ~ if we don't really need it--it confuses dbx. */
&& TYPE_VFIELD (type))
{
have_used_extensions = 1;
/* We need to write out info about what field this class
uses as its "main" vtable pointer field, because if this
field is inherited from a base class, GDB cannot necessarily
figure out which field it's using in time. */
stabstr_S ("~%");
dbxout_type (DECL_FCONTEXT (TYPE_VFIELD (type)), 0);
stabstr_C (';');
}
}
break;
case ENUMERAL_TYPE:
/* If TYPE_STUB_DECL is set and not ignored than it consider it as a used
symbol and put it in symbol queue. */
if (TYPE_STUB_DECL (type)
&& DECL_P (TYPE_STUB_DECL (type))
&& ! DECL_IGNORED_P (TYPE_STUB_DECL (type))
&& flag_debug_only_used_symbols)
debug_queue_symbol (TYPE_STUB_DECL (type));
if (!COMPLETE_TYPE_P (type)
/* No way in DBX fmt to describe a variable size. */
|| ! host_integerp (TYPE_SIZE (type), 1))
{
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_XREF;
if (use_gnu_debug_info_extensions)
dbxout_type_xref (type);
return;
}
if (main_variant != TYPE_MAIN_VARIANT (type))
{
tree orig_type = DECL_ORIGINAL_TYPE (TYPE_NAME (type));
if (flag_debug_only_used_symbols)
{
if (TYPE_STUB_DECL (orig_type)
&& !DECL_IGNORED_P (TYPE_STUB_DECL (orig_type)))
debug_queue_symbol (TYPE_STUB_DECL (orig_type));
}
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
dbxout_type_index (orig_type);
dbxout_queue_type (orig_type);
return;
}
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
if (use_gnu_debug_info_extensions
&& TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node))
{
have_used_extensions = 1;
stabstr_S ("@s");
stabstr_D (TYPE_PRECISION (type));
stabstr_C (';');
}
stabstr_C ('e');
for (tem = TYPE_VALUES (type); tem; tem = TREE_CHAIN (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)));
else
stabstr_O (TREE_VALUE (tem));
stabstr_C (',');
if (TREE_CHAIN (tem) != 0)
CONTIN;
}
stabstr_C (';');
break;
case INTEGER_TYPE:
dbxout_integer_type (type);
break;
case REAL_TYPE:
dbxout_real_type (type);
break;
case CHAR_TYPE:
dbxout_char_type (type);
break;
case BOOLEAN_TYPE:
dbxout_boolean_type (type);
break;
case COMPLEX_TYPE:
dbxout_complex_type (type);
break;
case FILE_TYPE:
dbxout_file_type (type);
break;
case FUNCTION_TYPE:
dbxout_function_type (type);
break;
case REFERENCE_TYPE:
dbxout_reference_type (type);
break;
case VECTOR_TYPE:
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
/* 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;
/* Fall through .. */
case ARRAY_TYPE:
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
if (TYPE_PACKED (type) && use_gnu_debug_info_extensions)
{
have_used_extensions = 1;
stabstr_S ("@s");
stabstr_D (BITS_PER_UNIT * int_size_in_bytes (type));
stabstr_S (";@S;S");
dbxout_type (TYPE_DOMAIN (type), 0);
}
if (vector_type)
{
have_used_extensions = 1;
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. */
/* Check if a character string type, which in Chill is
different from an array of characters. */
if (TYPE_STRING_FLAG (type) && use_gnu_debug_info_extensions)
{
have_used_extensions = 1;
stabstr_S ("@S;");
}
tem = TYPE_DOMAIN (type);
if (tem == NULL)
{
stabstr_S ("ar");
dbxout_type_index (integer_type_node);
stabstr_S (";0;-1;");
}
else
{
stabstr_C ('a');
dbxout_range_type (tem);
}
dbxout_type_index (TREE_TYPE (type));
dbxout_queue_type (TREE_TYPE (type));
break;
case METHOD_TYPE:
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
if (use_gnu_debug_info_extensions)
{
have_used_extensions = 1;
stabstr_C ('#');
/* Write the argument types out longhand. */
dbxout_type (TYPE_METHOD_BASETYPE (type), 1);
stabstr_C (',');
dbxout_type (TREE_TYPE (type), 1);
dbxout_args (TYPE_ARG_TYPES (type));
stabstr_C (';');
}
else
/* Treat it as a function type. */
dbxout_type (TREE_TYPE (type), 1);
break;
case OFFSET_TYPE:
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
if (use_gnu_debug_info_extensions)
{
have_used_extensions = 1;
stabstr_C ('@');
dbxout_type (TYPE_OFFSET_BASETYPE (type), 0);
stabstr_C (',');
dbxout_type (TREE_TYPE (type), 0);
}
else
/* Should print as an int, because it is really just an offset. */
dbxout_type (integer_type_node, 0);
break;
default:
gcc_unreachable ();
}
}
/* Output cross reference for TYPE. */
static void
dbxout_type_xref (tree type)
{
static int anonymous_type_number = 0;
stabstr_C ('=');
switch (TREE_CODE (type))
{
case RECORD_TYPE:
stabstr_S ("xs");
break;
case UNION_TYPE:
case QUAL_UNION_TYPE:
stabstr_S ("xu");
break;
case ENUMERAL_TYPE:
stabstr_S ("xe");
break;
default:
gcc_unreachable ();
}
if (TYPE_NAME (type) != 0)
dbxout_type_name (type);
else
{
stabstr_S ("$$");
stabstr_D (anonymous_type_number++);
}
stabstr_C (':');
return;
}
/* Describe TYPE as pointer type. */
static void
dbxout_pointer_type (tree type)
{
tree ttype;
stabstr_C ('=');
stabstr_C ('*');
ttype = TREE_TYPE (type);
dbxout_type_index (ttype);
dbxout_queue_type (ttype);
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
return;
}
/* For a void type, just define it as itself; i.e., "5=5".
This makes us consider it defined
without saying what it is. The debugger will make it
a void type when the reference is seen, and nothing will
ever override that default. */
static void
dbxout_void_type (tree type)
{
stabstr_C ('=');
dbxout_type_index (type);
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
}
/* Describe TYPE as an integer type. */
static void
dbxout_integer_type (tree type)
{
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
if (type == char_type_node && ! TYPE_UNSIGNED (type))
{
/* Output the type `char' as a subrange of itself!
I don't understand this definition, just copied it
from the output of pcc.
This used to use `r2' explicitly and we used to
take care to make sure that `char' was type number 2. */
stabstr_C ('r');
dbxout_type_index (type);
stabstr_S (";0;127;");
}
/* If this is a subtype of another integer type, always prefer to
write it as a subtype. */
else if (TREE_TYPE (type) != 0
&& TREE_CODE (TREE_TYPE (type)) == INTEGER_TYPE)
{
/* If the size is non-standard, say what it is if we can use
GDB extensions. */
if (use_gnu_debug_info_extensions
&& TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node))
{
have_used_extensions = 1;
stabstr_S ("@s");
stabstr_D (TYPE_PRECISION (type));
stabstr_C (';');
}
dbxout_range_type (type);
}
else
{
/* If the size is non-standard, say what it is if we can use
GDB extensions. */
if (use_gnu_debug_info_extensions
&& TYPE_PRECISION (type) != TYPE_PRECISION (integer_type_node))
{
have_used_extensions = 1;
stabstr_S ("@s");
stabstr_D (TYPE_PRECISION (type));
stabstr_C (';');
}
if (print_int_cst_bounds_in_octal_p (type))
{
stabstr_C ('r');
/* If this type derives from another type, output type index of
parent type. This is particularly important when parent type
is an enumerated type, because not generating the parent type
index would transform the definition of this enumerated type
into a plain unsigned type. */
if (TREE_TYPE (type) != 0)
dbxout_type_index (TREE_TYPE (type));
else
dbxout_type_index (type);
stabstr_C (';');
stabstr_O (TYPE_MIN_VALUE (type));
stabstr_C (';');
stabstr_O (TYPE_MAX_VALUE (type));
stabstr_C (';');
}
else
/* Output other integer types as subranges of `int'. */
dbxout_range_type (type);
}
return;
}
/* Describe TYPE as a real type. */
static void
dbxout_real_type (tree type)
{
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
/* This used to say `r1' and we used to take care
to make sure that `int' was type number 1. */
stabstr_C ('r');
dbxout_type_index (integer_type_node);
stabstr_C (';');
stabstr_D (int_size_in_bytes (type));
stabstr_S (";0;");
return;
}
/* Describe type as a char type. */
static void
dbxout_char_type (tree type)
{
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
if (use_gnu_debug_info_extensions)
{
have_used_extensions = 1;
stabstr_S ("@s");
stabstr_D (BITS_PER_UNIT * int_size_in_bytes (type));
stabstr_S (";-20;");
}
else
{
/* Output the type `char' as a subrange of itself.
That is what pcc seems to do. */
stabstr_C ('r');
dbxout_type_index (char_type_node);
stabstr_S (TYPE_UNSIGNED (type) ? ";0;255;" : ";0;127;");
}
return;
}
/* Describe type as a boolean type. */
static void
dbxout_boolean_type (tree type)
{
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
if (use_gnu_debug_info_extensions)
{
have_used_extensions = 1;
stabstr_S ("@s");
stabstr_D (BITS_PER_UNIT * int_size_in_bytes (type));
stabstr_S (";-16;");
}
else /* Define as enumeral type (False, True) */
stabstr_S ("eFalse:0,True:1,;");
return;
}
/* Describe type as a complex type. */
static void
dbxout_complex_type (tree type)
{
stabstr_C ('=');
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
/* Differs from the REAL_TYPE by its new data type number.
R3 is NF_COMPLEX. We don't try to use any of the other NF_*
codes since gdb doesn't care anyway. */
if (TREE_CODE (TREE_TYPE (type)) == REAL_TYPE)
{
stabstr_S ("R3;");
stabstr_D (2 * int_size_in_bytes (TREE_TYPE (type)));
stabstr_S (";0;");
}
else
{
/* Output a complex integer type as a structure,
pending some other way to do it. */
stabstr_C ('s');
stabstr_D (int_size_in_bytes (type));
stabstr_S ("real:");
dbxout_type (TREE_TYPE (type), 0);
stabstr_S (",0,");
stabstr_D (TYPE_PRECISION (TREE_TYPE (type)));
stabstr_S (";imag:");
dbxout_type (TREE_TYPE (type), 0);
stabstr_C (',');
stabstr_D (TYPE_PRECISION (TREE_TYPE (type)));
stabstr_C (',');
stabstr_D (TYPE_PRECISION (TREE_TYPE (type)));
stabstr_S (";;");
}
}
/* Describe Type as a file type. */
static void
dbxout_file_type (tree type)
{
tree ttype;
stabstr_C ('=');
stabstr_C ('d');
ttype = TREE_TYPE (type);
dbxout_type_index (ttype);
dbxout_queue_type (ttype);
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
return;
}
/* Describe TYPE as a function type. */
static void
dbxout_function_type (tree type)
{
tree ttype;
stabstr_C ('=');
stabstr_C ('f');
ttype = TREE_TYPE (type);
dbxout_type_index (ttype);
dbxout_queue_type (ttype);
typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;
return;
}
/* Describe TYPE as a reference type. */
static void
dbxout_reference_type (tree type)
{
tree ttype;
stabstr_C ('=');
if (use_gnu_debug_info_extensions)
{
have_used_extensions = 1;
stabstr_C ('&');
}
else
stabstr_C ('*');
ttype = TREE_TYPE (type);
dbxout_type_index (ttype);
dbxout_queue_type (ttype);
/* typevec[TYPE_SYMTAB_ADDRESS (type)].status = TYPE_DEFINED;*/
return;
}
/* Assigne next type number as the type number for TYPE. */
static void
dbxout_next_type_number (tree type)
{
if (TYPE_SYMTAB_ADDRESS (type) != 0)
return;
TYPE_SYMTAB_ADDRESS (type) = next_type_number++;
if (next_type_number == typevec_len)
{
typevec
= ggc_realloc (typevec, (typevec_len * 2 * sizeof typevec[0]));
memset (typevec + typevec_len, 0, typevec_len * sizeof typevec[0]);
typevec_len *= 2;
}
#ifdef DBX_USE_BINCL
emit_pending_bincls_if_required ();
typevec[TYPE_SYMTAB_ADDRESS (type)].file_number
= current_file->file_number;
typevec[TYPE_SYMTAB_ADDRESS (type)].type_number
= current_file->next_type_number++;
#endif
}
/* Return next qualified type num ber. */
static int
dbxout_next_q_type_number (void)
{
next_q_type_number++;
if (next_q_type_number == q_typevec_len)
{
q_typevec
= ggc_realloc (q_typevec, (q_typevec_len * 2 * sizeof q_typevec[0]));
memset (q_typevec + q_typevec_len, 0, q_typevec_len * sizeof q_typevec[0]);
q_typevec_len *= 2;
}
return next_q_type_number;
}
/* APPLE LOCAL end dbxout_type rewrite. */
/* Return nonzero if the given type represents an integer whose bounds
should be printed in octal format. */
static bool
print_int_cst_bounds_in_octal_p (tree type)
{
/* 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
the bounds the usual way, write them in octal. Note the test is for
the *target's* size of "long", not that of the host. The host test
is just to make sure we can write it out in case the host wide int
is narrower than the target "long".
For unsigned types, we use octal if they are the same size or larger.
This is because we print the bounds as signed decimal, and hence they
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
&& (TYPE_PRECISION (type) > TYPE_PRECISION (integer_type_node)
|| ((TYPE_PRECISION (type) == TYPE_PRECISION (integer_type_node))
&& TYPE_UNSIGNED (type))
|| TYPE_PRECISION (type) > HOST_BITS_PER_WIDE_INT
|| (TYPE_PRECISION (type) == HOST_BITS_PER_WIDE_INT
&& TYPE_UNSIGNED (type))))
return TRUE;
else
return FALSE;
}
/* Output the name of type TYPE, with no punctuation.
Such names can be set up either by typedef declarations
or by struct, enum and union tags. */
static void
dbxout_type_name (tree type)
{
tree t = TYPE_NAME (type);
gcc_assert (t);
switch (TREE_CODE (t))
{
case IDENTIFIER_NODE:
break;
case TYPE_DECL:
t = DECL_NAME (t);
break;
default:
gcc_unreachable ();
}
stabstr_I (t);
}
/* Output leading leading struct or class names needed for qualifying
type whose scope is limited to a struct or class. */
static void
dbxout_class_name_qualifiers (tree decl)
{
tree context = decl_type_context (decl);
if (context != NULL_TREE
&& TREE_CODE(context) == RECORD_TYPE
&& TYPE_NAME (context) != 0
&& (TREE_CODE (TYPE_NAME (context)) == IDENTIFIER_NODE
|| (DECL_NAME (TYPE_NAME (context)) != 0)))
{
tree name = TYPE_NAME (context);
if (TREE_CODE (name) == TYPE_DECL)
{
dbxout_class_name_qualifiers (name);
name = DECL_NAME (name);
}
stabstr_I (name);
stabstr_S ("::");
}
}
/* 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.
LOCAL is nonzero if the scope is less than the entire file.
Return 1 if a stabs might have been emitted. */
int
dbxout_symbol (tree decl, int local ATTRIBUTE_UNUSED)
{
tree type = TREE_TYPE (decl);
tree context = NULL_TREE;
int result = 0;
/* "Intercept" dbxout_symbol() calls like we do all debug_hooks. */
++debug_nesting;
/* Ignore nameless syms, but don't ignore type tags. */
if ((DECL_NAME (decl) == 0 && TREE_CODE (decl) != TYPE_DECL)
|| DECL_IGNORED_P (decl))
DBXOUT_DECR_NESTING_AND_RETURN (0);
/* If we are to generate only the symbols actually used then such
symbol nodees are flagged with TREE_USED. Ignore any that
aren't flaged as TREE_USED. */
if (flag_debug_only_used_symbols
&& (!TREE_USED (decl)
&& (TREE_CODE (decl) != VAR_DECL || !DECL_INITIAL (decl))))
DBXOUT_DECR_NESTING_AND_RETURN (0);
/* If dbxout_init has not yet run, queue this symbol for later. */
if (!typevec)
{
preinit_symbols = tree_cons (0, decl, preinit_symbols);
DBXOUT_DECR_NESTING_AND_RETURN (0);
}
if (flag_debug_only_used_symbols)
{
tree t;
/* We now have a used symbol. We need to generate the info for
the symbol's type in addition to the symbol itself. These
type symbols are queued to be generated after were done with
the symbol itself (otherwise they would fight over the
stabstr obstack).
Note, because the TREE_TYPE(type) might be something like a
pointer to a named type we need to look for the first name
we see following the TREE_TYPE chain. */
t = type;
while (POINTER_TYPE_P (t))
t = TREE_TYPE (t);
/* RECORD_TYPE, UNION_TYPE, QUAL_UNION_TYPE, and ENUMERAL_TYPE
need special treatment. The TYPE_STUB_DECL field in these
types generally represents the tag name type we want to
output. In addition there could be a typedef type with
a different name. In that case we also want to output
that. */
if (TREE_CODE (t) == RECORD_TYPE
|| TREE_CODE (t) == UNION_TYPE
|| TREE_CODE (t) == QUAL_UNION_TYPE
|| TREE_CODE (t) == ENUMERAL_TYPE)
{
if (TYPE_STUB_DECL (t)
&& TYPE_STUB_DECL (t) != decl
&& DECL_P (TYPE_STUB_DECL (t))
&& ! DECL_IGNORED_P (TYPE_STUB_DECL (t)))
{
debug_queue_symbol (TYPE_STUB_DECL (t));
if (TYPE_NAME (t)
&& TYPE_NAME (t) != TYPE_STUB_DECL (t)
&& TYPE_NAME (t) != decl
&& DECL_P (TYPE_NAME (t)))
debug_queue_symbol (TYPE_NAME (t));
}
}
else if (TYPE_NAME (t)
&& TYPE_NAME (t) != decl
&& DECL_P (TYPE_NAME (t)))
debug_queue_symbol (TYPE_NAME (t));
}
emit_pending_bincls_if_required ();
switch (TREE_CODE (decl))
{
case CONST_DECL:
/* Enum values are defined by defining the enum type. */
break;
case FUNCTION_DECL:
if (DECL_RTL (decl) == 0)
DBXOUT_DECR_NESTING_AND_RETURN (0);
if (DECL_EXTERNAL (decl))
break;
/* Don't mention a nested function under its parent. */
context = decl_function_context (decl);
if (context == current_function_decl)
break;
/* Don't mention an inline instance of a nested function. */
if (context && DECL_FROM_INLINE (decl))
break;
if (!MEM_P (DECL_RTL (decl))
|| GET_CODE (XEXP (DECL_RTL (decl), 0)) != SYMBOL_REF)
break;
dbxout_begin_complex_stabs ();
stabstr_I (DECL_ASSEMBLER_NAME (decl));
stabstr_S (TREE_PUBLIC (decl) ? ":F" : ":f");
result = 1;
if (TREE_TYPE (type))
dbxout_type (TREE_TYPE (type), 0);
else
dbxout_type (void_type_node, 0);
/* For a nested function, when that function is compiled,
mention the containing function name
as well as (since dbx wants it) our own assembler-name. */
if (context != 0)
{
stabstr_C (',');
stabstr_I (DECL_ASSEMBLER_NAME (decl));
stabstr_C (',');
stabstr_I (DECL_NAME (context));
}
dbxout_finish_complex_stabs (decl, N_FUN, XEXP (DECL_RTL (decl), 0),
0, 0);
break;
case TYPE_DECL:
/* Don't output the same typedef twice.
And don't output what language-specific stuff doesn't want output. */
if (TREE_ASM_WRITTEN (decl) || TYPE_DECL_SUPPRESS_DEBUG (decl))
DBXOUT_DECR_NESTING_AND_RETURN (0);
/* Don't output typedefs for types with magic type numbers (XCOFF). */
#ifdef DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER
{
int fundamental_type_number =
DBX_ASSIGN_FUNDAMENTAL_TYPE_NUMBER (decl);
if (fundamental_type_number != 0)
{
TREE_ASM_WRITTEN (decl) = 1;
TYPE_SYMTAB_ADDRESS (TREE_TYPE (decl)) = fundamental_type_number;
DBXOUT_DECR_NESTING_AND_RETURN (0);
}
}
#endif
FORCE_TEXT;
result = 1;
{
int tag_needed = 1;
int did_output = 0;
/* APPLE LOCAL begin gdb only used symbols */
if (DECL_NAME (decl)
#ifdef DBX_ONLY_USED_SYMBOLS
/* Do not generate a tag for incomplete records */
&& (COMPLETE_TYPE_P (type) || TREE_CODE (type) == VOID_TYPE)
#endif
)
/* APPLE LOCAL end gdb only used symbols */
{
/* Nonzero means we must output a tag as well as a typedef. */
tag_needed = 0;
/* Handle the case of a C++ structure or union
where the TYPE_NAME is a TYPE_DECL
which gives both a typedef name and a tag. */
/* dbx requires the tag first and the typedef second. */
if ((TREE_CODE (type) == RECORD_TYPE
|| TREE_CODE (type) == UNION_TYPE
|| TREE_CODE (type) == QUAL_UNION_TYPE)
&& TYPE_NAME (type) == decl
&& !(use_gnu_debug_info_extensions && have_used_extensions)
&& !TREE_ASM_WRITTEN (TYPE_NAME (type))
/* Distinguish the implicit typedefs of C++
from explicit ones that might be found in C. */
&& DECL_ARTIFICIAL (decl)
/* Do not generate a tag for incomplete records. */
&& COMPLETE_TYPE_P (type)
/* Do not generate a tag for records of variable size,
since this type can not be properly described in the
DBX format, and it confuses some tools such as objdump. */
&& host_integerp (TYPE_SIZE (type), 1))
{
tree name = TYPE_NAME (type);
if (TREE_CODE (name) == TYPE_DECL)
name = DECL_NAME (name);
dbxout_begin_complex_stabs ();
stabstr_I (name);
stabstr_S (":T");
dbxout_type (type, 1);
dbxout_finish_complex_stabs (0, DBX_TYPE_DECL_STABS_CODE,
0, 0, 0);
}
dbxout_begin_complex_stabs ();
/* Output leading class/struct qualifiers.
??? why not set have_used_extensions here ... because
then the test of it below would always be true, I
guess. But it's not clear to me why we shouldn't do
that always in extended mode. */
if (use_gnu_debug_info_extensions)
dbxout_class_name_qualifiers (decl);
/* Output typedef name. */
/* APPLE LOCAL begin 4215975 */
if (DECL_NAME (decl) == anon_place_holder)
DECL_NAME (decl) = NULL_TREE;
else
stabstr_I (DECL_NAME (decl));
/* APPLE LOCAL end 4215975 */
stabstr_C (':');
/* Short cut way to output a tag also. */
if ((TREE_CODE (type) == RECORD_TYPE
|| TREE_CODE (type) == UNION_TYPE
|| TREE_CODE (type) == QUAL_UNION_TYPE)
&& TYPE_NAME (type) == decl
/* Distinguish the implicit typedefs of C++
from explicit ones that might be found in C. */
&& DECL_ARTIFICIAL (decl))
{
if (use_gnu_debug_info_extensions && have_used_extensions)
{
stabstr_C ('T');
TREE_ASM_WRITTEN (TYPE_NAME (type)) = 1;
}
}
stabstr_C ('t');
dbxout_type (type, 1);
dbxout_finish_complex_stabs (decl, DBX_TYPE_DECL_STABS_CODE,
0, 0, 0);
did_output = 1;
}
/* Don't output a tag if this is an incomplete type. This prevents
the sun4 Sun OS 4.x dbx from crashing. */
if (tag_needed