/* Support routines for building symbol tables in GDB's internal format.
- Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992
- Free Software Foundation, Inc.
+ Copyright 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995,
+ 1996, 1997, 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
-This file is part of GDB.
+ This file is part of GDB.
-This program 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 of the License, or
-(at your option) any later version.
+ This program 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 of the License, or
+ (at your option) any later version.
-This program 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.
+ This program 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 this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program; if not, write to the Free Software
+ Foundation, Inc., 59 Temple Place - Suite 330,
+ Boston, MA 02111-1307, USA. */
/* This module provides subroutines used for creating and adding to
the symbol table. These routines are called from various symbol-
#include "symtab.h"
#include "symfile.h" /* Needed for "struct complaint" */
#include "objfiles.h"
+#include "gdbtypes.h"
#include "complaints.h"
-#include <string.h>
-
+#include "gdb_string.h"
+#include "expression.h" /* For "enum exp_opcode" used by... */
+#include "language.h" /* For "longest_local_hex_string_custom" */
+#include "bcache.h"
/* Ask buildsym.h to define the vars it normally declares `extern'. */
-#define EXTERN /**/
+#define EXTERN
+/**/
#include "buildsym.h" /* Our own declarations */
#undef EXTERN
/* For cleanup_undefined_types and finish_global_stabs (somewhat
questionable--see comment where we call them). */
+
#include "stabsread.h"
-static int
-compare_line_numbers PARAMS ((const void *, const void *));
+/* List of free `struct pending' structures for reuse. */
+
+static struct pending *free_pendings;
-static struct blockvector *
-make_blockvector PARAMS ((struct objfile *));
+/* Non-zero if symtab has line number info. This prevents an
+ otherwise empty symtab from being tossed. */
+static int have_line_numbers;
\f
-/* Initial sizes of data structures. These are realloc'd larger if needed,
- and realloc'd down to the size actually used, when completed. */
+static int compare_line_numbers (const void *ln1p, const void *ln2p);
+\f
+
+/* Initial sizes of data structures. These are realloc'd larger if
+ needed, and realloc'd down to the size actually used, when
+ completed. */
#define INITIAL_CONTEXT_STACK_SIZE 10
#define INITIAL_LINE_VECTOR_LENGTH 1000
-
\f
+
/* Complaints about the symbols we have encountered. */
+struct complaint block_end_complaint =
+{"block end address less than block start address in %s (patched it)", 0, 0};
+
+struct complaint anon_block_end_complaint =
+{"block end address 0x%lx less than block start address 0x%lx (patched it)", 0, 0};
+
struct complaint innerblock_complaint =
- {"inner block not inside outer block in %s", 0, 0};
+{"inner block not inside outer block in %s", 0, 0};
struct complaint innerblock_anon_complaint =
- {"inner block not inside outer block", 0, 0};
-
-struct complaint blockvector_complaint =
- {"block at 0x%lx out of order", 0, 0};
+{"inner block (0x%lx-0x%lx) not inside outer block (0x%lx-0x%lx)", 0, 0};
+struct complaint blockvector_complaint =
+{"block at %s out of order", 0, 0};
\f
/* maintain the lists of symbols and blocks */
+/* Add a pending list to free_pendings. */
+void
+add_free_pendings (struct pending *list)
+{
+ register struct pending *link = list;
+
+ if (list)
+ {
+ while (link->next) link = link->next;
+ link->next = free_pendings;
+ free_pendings = list;
+ }
+}
+
/* Add a symbol to one of the lists of symbols. */
void
-add_symbol_to_list (symbol, listhead)
- struct symbol *symbol;
- struct pending **listhead;
+add_symbol_to_list (struct symbol *symbol, struct pending **listhead)
{
register struct pending *link;
-
- /* We keep PENDINGSIZE symbols in each link of the list.
- If we don't have a link with room in it, add a new link. */
+
+ /* If this is an alias for another symbol, don't add it. */
+ if (symbol->ginfo.name && symbol->ginfo.name[0] == '#')
+ return;
+
+ /* We keep PENDINGSIZE symbols in each link of the list. If we
+ don't have a link with room in it, add a new link. */
if (*listhead == NULL || (*listhead)->nsyms == PENDINGSIZE)
{
if (free_pendings)
(*listhead)->symbol[(*listhead)->nsyms++] = symbol;
}
-/* Find a symbol named NAME on a LIST. NAME need not be '\0'-terminated;
- LENGTH is the length of the name. */
+/* Find a symbol named NAME on a LIST. NAME need not be
+ '\0'-terminated; LENGTH is the length of the name. */
struct symbol *
-find_symbol_in_list (list, name, length)
- struct pending *list;
- char *name;
- int length;
+find_symbol_in_list (struct pending *list, char *name, int length)
{
int j;
char *pp;
while (list != NULL)
{
- for (j = list->nsyms; --j >= 0; )
+ for (j = list->nsyms; --j >= 0;)
{
pp = SYMBOL_NAME (list->symbol[j]);
if (*pp == *name && strncmp (pp, name, length) == 0 &&
return (NULL);
}
-/* At end of reading syms, or in case of quit,
- really free as many `struct pending's as we can easily find. */
+/* At end of reading syms, or in case of quit, really free as many
+ `struct pending's as we can easily find. */
/* ARGSUSED */
void
-really_free_pendings (foo)
- int foo;
+really_free_pendings (PTR dummy)
{
struct pending *next, *next1;
-#if 0
- struct pending_block *bnext, *bnext1;
-#endif
for (next = free_pendings; next; next = next1)
{
next1 = next->next;
- free ((PTR)next);
+ xfree ((void *) next);
}
free_pendings = NULL;
-#if 0 /* Now we make the links in the symbol_obstack, so don't free them. */
- for (bnext = pending_blocks; bnext; bnext = bnext1)
- {
- bnext1 = bnext->next;
- free ((PTR)bnext);
- }
-#endif
- pending_blocks = NULL;
+ free_pending_blocks ();
for (next = file_symbols; next != NULL; next = next1)
{
next1 = next->next;
- free ((PTR)next);
+ xfree ((void *) next);
}
file_symbols = NULL;
for (next = global_symbols; next != NULL; next = next1)
{
next1 = next->next;
- free ((PTR)next);
+ xfree ((void *) next);
}
global_symbols = NULL;
}
-/* Take one of the lists of symbols and make a block from it.
- Keep the order the symbols have in the list (reversed from the input file).
- Put the block on the list of pending blocks. */
+/* This function is called to discard any pending blocks. */
+
+void
+free_pending_blocks (void)
+{
+#if 0 /* Now we make the links in the
+ symbol_obstack, so don't free
+ them. */
+ struct pending_block *bnext, *bnext1;
+
+ for (bnext = pending_blocks; bnext; bnext = bnext1)
+ {
+ bnext1 = bnext->next;
+ xfree ((void *) bnext);
+ }
+#endif
+ pending_blocks = NULL;
+}
+
+/* Take one of the lists of symbols and make a block from it. Keep
+ the order the symbols have in the list (reversed from the input
+ file). Put the block on the list of pending blocks. */
void
-finish_block (symbol, listhead, old_blocks, start, end, objfile)
- struct symbol *symbol;
- struct pending **listhead;
- struct pending_block *old_blocks;
- CORE_ADDR start, end;
- struct objfile *objfile;
+finish_block (struct symbol *symbol, struct pending **listhead,
+ struct pending_block *old_blocks,
+ CORE_ADDR start, CORE_ADDR end,
+ struct objfile *objfile)
{
register struct pending *next, *next1;
register struct block *block;
next;
i += next->nsyms, next = next->next)
{
- /*EMPTY*/;
+ /* EMPTY */ ;
}
- block = (struct block *) obstack_alloc (&objfile -> symbol_obstack,
- (sizeof (struct block) + ((i - 1) * sizeof (struct symbol *))));
+ block = (struct block *) obstack_alloc (&objfile->symbol_obstack,
+ (sizeof (struct block) + ((i - 1) * sizeof (struct symbol *))));
/* Copy the symbols into the block. */
BLOCK_START (block) = start;
BLOCK_END (block) = end;
- /* Superblock filled in when containing block is made */
+ /* Superblock filled in when containing block is made */
BLOCK_SUPERBLOCK (block) = NULL;
+
BLOCK_GCC_COMPILED (block) = processing_gcc_compilation;
/* Put the block in as the value of the symbol that names it. */
if (symbol)
{
+ struct type *ftype = SYMBOL_TYPE (symbol);
SYMBOL_BLOCK_VALUE (symbol) = block;
BLOCK_FUNCTION (block) = symbol;
+
+ if (TYPE_NFIELDS (ftype) <= 0)
+ {
+ /* No parameter type information is recorded with the
+ function's type. Set that from the type of the
+ parameter symbols. */
+ int nparams = 0, iparams;
+ struct symbol *sym;
+ for (i = 0; i < BLOCK_NSYMS (block); i++)
+ {
+ sym = BLOCK_SYM (block, i);
+ switch (SYMBOL_CLASS (sym))
+ {
+ case LOC_ARG:
+ case LOC_REF_ARG:
+ case LOC_REGPARM:
+ case LOC_REGPARM_ADDR:
+ case LOC_BASEREG_ARG:
+ case LOC_LOCAL_ARG:
+ nparams++;
+ break;
+ case LOC_UNDEF:
+ case LOC_CONST:
+ case LOC_STATIC:
+ case LOC_INDIRECT:
+ case LOC_REGISTER:
+ case LOC_LOCAL:
+ case LOC_TYPEDEF:
+ case LOC_LABEL:
+ case LOC_BLOCK:
+ case LOC_CONST_BYTES:
+ case LOC_BASEREG:
+ case LOC_UNRESOLVED:
+ case LOC_OPTIMIZED_OUT:
+ default:
+ break;
+ }
+ }
+ if (nparams > 0)
+ {
+ TYPE_NFIELDS (ftype) = nparams;
+ TYPE_FIELDS (ftype) = (struct field *)
+ TYPE_ALLOC (ftype, nparams * sizeof (struct field));
+
+ for (i = iparams = 0; iparams < nparams; i++)
+ {
+ sym = BLOCK_SYM (block, i);
+ switch (SYMBOL_CLASS (sym))
+ {
+ case LOC_ARG:
+ case LOC_REF_ARG:
+ case LOC_REGPARM:
+ case LOC_REGPARM_ADDR:
+ case LOC_BASEREG_ARG:
+ case LOC_LOCAL_ARG:
+ TYPE_FIELD_TYPE (ftype, iparams) = SYMBOL_TYPE (sym);
+ iparams++;
+ break;
+ case LOC_UNDEF:
+ case LOC_CONST:
+ case LOC_STATIC:
+ case LOC_INDIRECT:
+ case LOC_REGISTER:
+ case LOC_LOCAL:
+ case LOC_TYPEDEF:
+ case LOC_LABEL:
+ case LOC_BLOCK:
+ case LOC_CONST_BYTES:
+ case LOC_BASEREG:
+ case LOC_UNRESOLVED:
+ case LOC_OPTIMIZED_OUT:
+ default:
+ break;
+ }
+ }
+ }
+ }
}
else
{
}
*listhead = NULL;
- /* Install this block as the superblock
- of all blocks made since the start of this scope
- that don't have superblocks yet. */
+#if 1
+ /* Check to be sure that the blocks have an end address that is
+ greater than starting address */
+
+ if (BLOCK_END (block) < BLOCK_START (block))
+ {
+ if (symbol)
+ {
+ complain (&block_end_complaint, SYMBOL_SOURCE_NAME (symbol));
+ }
+ else
+ {
+ complain (&anon_block_end_complaint, BLOCK_END (block), BLOCK_START (block));
+ }
+ /* Better than nothing */
+ BLOCK_END (block) = BLOCK_START (block);
+ }
+#endif
+
+ /* Install this block as the superblock of all blocks made since the
+ start of this scope that don't have superblocks yet. */
opblock = NULL;
for (pblock = pending_blocks; pblock != old_blocks; pblock = pblock->next)
if (BLOCK_SUPERBLOCK (pblock->block) == NULL)
{
#if 1
- /* Check to be sure the blocks are nested as we receive them.
- If the compiler/assembler/linker work, this just burns a small
- amount of time. */
+ /* Check to be sure the blocks are nested as we receive
+ them. If the compiler/assembler/linker work, this just
+ burns a small amount of time. */
if (BLOCK_START (pblock->block) < BLOCK_START (block) ||
- BLOCK_END (pblock->block) > BLOCK_END (block))
+ BLOCK_END (pblock->block) > BLOCK_END (block))
{
if (symbol)
{
}
else
{
- complain (&innerblock_anon_complaint);
+ complain (&innerblock_anon_complaint, BLOCK_START (pblock->block),
+ BLOCK_END (pblock->block), BLOCK_START (block),
+ BLOCK_END (block));
}
- BLOCK_START (pblock->block) = BLOCK_START (block);
- BLOCK_END (pblock->block) = BLOCK_END (block);
+ if (BLOCK_START (pblock->block) < BLOCK_START (block))
+ BLOCK_START (pblock->block) = BLOCK_START (block);
+ if (BLOCK_END (pblock->block) > BLOCK_END (block))
+ BLOCK_END (pblock->block) = BLOCK_END (block);
}
#endif
BLOCK_SUPERBLOCK (pblock->block) = block;
opblock = pblock;
}
- /* Record this block on the list of all blocks in the file.
- Put it after opblock, or at the beginning if opblock is 0.
- This puts the block in the list after all its subblocks. */
+ record_pending_block (objfile, block, opblock);
+}
+
+/* Record BLOCK on the list of all blocks in the file. Put it after
+ OPBLOCK, or at the beginning if opblock is NULL. This puts the
+ block in the list after all its subblocks.
+
+ Allocate the pending block struct in the symbol_obstack to save
+ time. This wastes a little space. FIXME: Is it worth it? */
+
+void
+record_pending_block (struct objfile *objfile, struct block *block,
+ struct pending_block *opblock)
+{
+ register struct pending_block *pblock;
- /* Allocate in the symbol_obstack to save time.
- It wastes a little space. */
pblock = (struct pending_block *)
- obstack_alloc (&objfile -> symbol_obstack,
- sizeof (struct pending_block));
+ obstack_alloc (&objfile->symbol_obstack, sizeof (struct pending_block));
pblock->block = block;
if (opblock)
{
}
}
-static struct blockvector *
-make_blockvector (objfile)
- struct objfile *objfile;
+/* Note that this is only used in this file and in dstread.c, which
+ should be fixed to not need direct access to this function. When
+ that is done, it can be made static again. */
+
+struct blockvector *
+make_blockvector (struct objfile *objfile)
{
register struct pending_block *next;
register struct blockvector *blockvector;
/* Count the length of the list of blocks. */
- for (next = pending_blocks, i = 0; next; next = next->next, i++) {;}
+ for (next = pending_blocks, i = 0; next; next = next->next, i++)
+ {;
+ }
blockvector = (struct blockvector *)
- obstack_alloc (&objfile -> symbol_obstack,
+ obstack_alloc (&objfile->symbol_obstack,
(sizeof (struct blockvector)
+ (i - 1) * sizeof (struct block *)));
- /* Copy the blocks into the blockvector.
- This is done in reverse order, which happens to put
- the blocks into the proper order (ascending starting address).
- finish_block has hair to insert each block into the list
- after its subblocks in order to make sure this is true. */
+ /* Copy the blocks into the blockvector. This is done in reverse
+ order, which happens to put the blocks into the proper order
+ (ascending starting address). finish_block has hair to insert
+ each block into the list after its subblocks in order to make
+ sure this is true. */
BLOCKVECTOR_NBLOCKS (blockvector) = i;
for (next = pending_blocks; next; next = next->next)
BLOCKVECTOR_BLOCK (blockvector, --i) = next->block;
}
-#if 0 /* Now we make the links in the obstack, so don't free them. */
+#if 0 /* Now we make the links in the
+ obstack, so don't free them. */
/* Now free the links of the list, and empty the list. */
for (next = pending_blocks; next; next = next1)
{
next1 = next->next;
- free (next);
+ xfree (next);
}
#endif
pending_blocks = NULL;
-#if 1 /* FIXME, shut this off after a while to speed up symbol reading. */
- /* Some compilers output blocks in the wrong order, but we depend
- on their being in the right order so we can binary search.
- Check the order and moan about it. FIXME. */
+#if 1 /* FIXME, shut this off after a while
+ to speed up symbol reading. */
+ /* Some compilers output blocks in the wrong order, but we depend on
+ their being in the right order so we can binary search. Check the
+ order and moan about it. FIXME. */
if (BLOCKVECTOR_NBLOCKS (blockvector) > 1)
{
for (i = 1; i < BLOCKVECTOR_NBLOCKS (blockvector); i++)
{
- if (BLOCK_START(BLOCKVECTOR_BLOCK (blockvector, i-1))
- > BLOCK_START(BLOCKVECTOR_BLOCK (blockvector, i)))
+ if (BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i - 1))
+ > BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i)))
{
+ CORE_ADDR start
+ = BLOCK_START (BLOCKVECTOR_BLOCK (blockvector, i));
- /* FIXME-32x64: loses if CORE_ADDR doesn't fit in a
- long. Possible solutions include a version of
- complain which takes a callback, a
- sprintf_address_numeric to match
- print_address_numeric, or a way to set up a GDB_FILE
- * which causes sprintf rather than fprintf to be
- called. */
-
- complain (&blockvector_complaint,
- (unsigned long) BLOCK_START(BLOCKVECTOR_BLOCK (blockvector, i)));
+ complain (&blockvector_complaint,
+ longest_local_hex_string ((LONGEST) start));
}
}
}
return (blockvector);
}
-
\f
-/* Start recording information about source code that came from an included
- (or otherwise merged-in) source file with a different name. NAME is
- the name of the file (cannot be NULL), DIRNAME is the directory in which
- it resides (or NULL if not known). */
+/* Start recording information about source code that came from an
+ included (or otherwise merged-in) source file with a different
+ name. NAME is the name of the file (cannot be NULL), DIRNAME is
+ the directory in which it resides (or NULL if not known). */
void
-start_subfile (name, dirname)
- char *name;
- char *dirname;
+start_subfile (char *name, char *dirname)
{
register struct subfile *subfile;
- /* See if this subfile is already known as a subfile of the
- current main source file. */
+ /* See if this subfile is already known as a subfile of the current
+ main source file. */
for (subfile = subfiles; subfile; subfile = subfile->next)
{
}
}
- /* This subfile is not known. Add an entry for it.
- Make an entry for this subfile in the list of all subfiles
- of the current main source file. */
+ /* This subfile is not known. Add an entry for it. Make an entry
+ for this subfile in the list of all subfiles of the current main
+ source file. */
subfile = (struct subfile *) xmalloc (sizeof (struct subfile));
+ memset ((char *) subfile, 0, sizeof (struct subfile));
subfile->next = subfiles;
subfiles = subfile;
current_subfile = subfile;
subfile->name = (name == NULL) ? NULL : savestring (name, strlen (name));
subfile->dirname =
(dirname == NULL) ? NULL : savestring (dirname, strlen (dirname));
-
+
/* Initialize line-number recording for this subfile. */
subfile->line_vector = NULL;
- /* Default the source language to whatever can be deduced from
- the filename. If nothing can be deduced (such as for a C/C++
- include file with a ".h" extension), then inherit whatever
- language the previous subfile had. This kludgery is necessary
- because there is no standard way in some object formats to
- record the source language. Also, when symtabs are allocated
- we try to deduce a language then as well, but it is too late
- for us to use that information while reading symbols, since
- symtabs aren't allocated until after all the symbols have
- been processed for a given source file. */
+ /* Default the source language to whatever can be deduced from the
+ filename. If nothing can be deduced (such as for a C/C++ include
+ file with a ".h" extension), then inherit whatever language the
+ previous subfile had. This kludgery is necessary because there
+ is no standard way in some object formats to record the source
+ language. Also, when symtabs are allocated we try to deduce a
+ language then as well, but it is too late for us to use that
+ information while reading symbols, since symtabs aren't allocated
+ until after all the symbols have been processed for a given
+ source file. */
subfile->language = deduce_language_from_filename (subfile->name);
if (subfile->language == language_unknown &&
subfile->language = subfile->next->language;
}
+ /* Initialize the debug format string to NULL. We may supply it
+ later via a call to record_debugformat. */
+ subfile->debugformat = NULL;
+
/* cfront output is a C program, so in most ways it looks like a C
program. But to demangle we need to set the language to C++. We
can distinguish cfront code by the fact that it has #line
directives which specify a file name ending in .C.
- So if the filename of this subfile ends in .C, then change the language
- of any pending subfiles from C to C++. We also accept any other C++
- suffixes accepted by deduce_language_from_filename (in particular,
- some people use .cxx with cfront). */
+ So if the filename of this subfile ends in .C, then change the
+ language of any pending subfiles from C to C++. We also accept
+ any other C++ suffixes accepted by deduce_language_from_filename
+ (in particular, some people use .cxx with cfront). */
/* Likewise for f2c. */
if (subfile->name)
}
}
-/* For stabs readers, the first N_SO symbol is assumed to be the source
- file name, and the subfile struct is initialized using that assumption.
- If another N_SO symbol is later seen, immediately following the first
- one, then the first one is assumed to be the directory name and the
- second one is really the source file name.
+/* For stabs readers, the first N_SO symbol is assumed to be the
+ source file name, and the subfile struct is initialized using that
+ assumption. If another N_SO symbol is later seen, immediately
+ following the first one, then the first one is assumed to be the
+ directory name and the second one is really the source file name.
- So we have to patch up the subfile struct by moving the old name value to
- dirname and remembering the new name. Some sanity checking is performed
- to ensure that the state of the subfile struct is reasonable and that the
- old name we are assuming to be a directory name actually is (by checking
- for a trailing '/'). */
+ So we have to patch up the subfile struct by moving the old name
+ value to dirname and remembering the new name. Some sanity
+ checking is performed to ensure that the state of the subfile
+ struct is reasonable and that the old name we are assuming to be a
+ directory name actually is (by checking for a trailing '/'). */
void
-patch_subfile_names (subfile, name)
- struct subfile *subfile;
- char *name;
+patch_subfile_names (struct subfile *subfile, char *name)
{
if (subfile != NULL && subfile->dirname == NULL && subfile->name != NULL
- && subfile->name[strlen(subfile->name)-1] == '/')
+ && subfile->name[strlen (subfile->name) - 1] == '/')
{
subfile->dirname = subfile->name;
subfile->name = savestring (name, strlen (name));
+ last_source_file = name;
/* Default the source language to whatever can be deduced from
- the filename. If nothing can be deduced (such as for a C/C++
- include file with a ".h" extension), then inherit whatever
- language the previous subfile had. This kludgery is necessary
- because there is no standard way in some object formats to
- record the source language. Also, when symtabs are allocated
- we try to deduce a language then as well, but it is too late
- for us to use that information while reading symbols, since
- symtabs aren't allocated until after all the symbols have
- been processed for a given source file. */
+ the filename. If nothing can be deduced (such as for a C/C++
+ include file with a ".h" extension), then inherit whatever
+ language the previous subfile had. This kludgery is
+ necessary because there is no standard way in some object
+ formats to record the source language. Also, when symtabs
+ are allocated we try to deduce a language then as well, but
+ it is too late for us to use that information while reading
+ symbols, since symtabs aren't allocated until after all the
+ symbols have been processed for a given source file. */
subfile->language = deduce_language_from_filename (subfile->name);
if (subfile->language == language_unknown &&
}
}
}
-
\f
-/* Handle the N_BINCL and N_EINCL symbol types
- that act like N_SOL for switching source files
- (different subfiles, as we call them) within one object file,
- but using a stack rather than in an arbitrary order. */
+/* Handle the N_BINCL and N_EINCL symbol types that act like N_SOL for
+ switching source files (different subfiles, as we call them) within
+ one object file, but using a stack rather than in an arbitrary
+ order. */
void
-push_subfile ()
+push_subfile (void)
{
register struct subfile_stack *tem
- = (struct subfile_stack *) xmalloc (sizeof (struct subfile_stack));
+ = (struct subfile_stack *) xmalloc (sizeof (struct subfile_stack));
tem->next = subfile_stack;
subfile_stack = tem;
if (current_subfile == NULL || current_subfile->name == NULL)
{
- abort ();
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
}
tem->name = current_subfile->name;
}
char *
-pop_subfile ()
+pop_subfile (void)
{
register char *name;
register struct subfile_stack *link = subfile_stack;
if (link == NULL)
{
- abort ();
+ internal_error (__FILE__, __LINE__, "failed internal consistency check");
}
name = link->name;
subfile_stack = link->next;
- free ((PTR)link);
+ xfree ((void *) link);
return (name);
}
-
\f
-/* Add a linetable entry for line number LINE and address PC to the line
- vector for SUBFILE. */
+/* Add a linetable entry for line number LINE and address PC to the
+ line vector for SUBFILE. */
void
-record_line (subfile, line, pc)
- register struct subfile *subfile;
- int line;
- CORE_ADDR pc;
+record_line (register struct subfile *subfile, int line, CORE_ADDR pc)
{
struct linetable_entry *e;
/* Ignore the dummy line number in libg.o */
subfile->line_vector_length = INITIAL_LINE_VECTOR_LENGTH;
subfile->line_vector = (struct linetable *)
xmalloc (sizeof (struct linetable)
- + subfile->line_vector_length * sizeof (struct linetable_entry));
+ + subfile->line_vector_length * sizeof (struct linetable_entry));
subfile->line_vector->nitems = 0;
+ have_line_numbers = 1;
}
if (subfile->line_vector->nitems + 1 >= subfile->line_vector_length)
{
subfile->line_vector_length *= 2;
subfile->line_vector = (struct linetable *)
- xrealloc ((char *) subfile->line_vector, (sizeof (struct linetable)
- + subfile->line_vector_length * sizeof (struct linetable_entry)));
+ xrealloc ((char *) subfile->line_vector,
+ (sizeof (struct linetable)
+ + (subfile->line_vector_length
+ * sizeof (struct linetable_entry))));
}
e = subfile->line_vector->item + subfile->line_vector->nitems++;
- e->line = line; e->pc = pc;
+ e->line = line;
+ e->pc = pc;
}
-
/* Needed in order to sort line tables from IBM xcoff files. Sigh! */
static int
-compare_line_numbers (ln1p, ln2p)
- const PTR ln1p;
- const PTR ln2p;
+compare_line_numbers (const void *ln1p, const void *ln2p)
{
struct linetable_entry *ln1 = (struct linetable_entry *) ln1p;
struct linetable_entry *ln2 = (struct linetable_entry *) ln2p;
behavior (see comment at struct linetable in symtab.h). */
return ln1->line - ln2->line;
}
-
\f
-/* Start a new symtab for a new source file.
- Called, for example, when a stabs symbol of type N_SO is seen, or when
- a DWARF TAG_compile_unit DIE is seen.
- It indicates the start of data for one original source file. */
+/* Start a new symtab for a new source file. Called, for example,
+ when a stabs symbol of type N_SO is seen, or when a DWARF
+ TAG_compile_unit DIE is seen. It indicates the start of data for
+ one original source file. */
void
-start_symtab (name, dirname, start_addr)
- char *name;
- char *dirname;
- CORE_ADDR start_addr;
+start_symtab (char *name, char *dirname, CORE_ADDR start_addr)
{
last_source_file = name;
file_symbols = NULL;
global_symbols = NULL;
within_function = 0;
+ have_line_numbers = 0;
- /* Context stack is initially empty. Allocate first one with room for
- 10 levels; reuse it forever afterward. */
+ /* Context stack is initially empty. Allocate first one with room
+ for 10 levels; reuse it forever afterward. */
if (context_stack == NULL)
{
context_stack_size = INITIAL_CONTEXT_STACK_SIZE;
}
context_stack_depth = 0;
- /* Initialize the list of sub source files with one entry
- for this file (the top-level source file). */
+ /* Initialize the list of sub source files with one entry for this
+ file (the top-level source file). */
subfiles = NULL;
current_subfile = NULL;
start_subfile (name, dirname);
}
-/* Finish the symbol definitions for one main source file,
- close off all the lexical contexts for that file
- (creating struct block's for them), then make the struct symtab
- for that file and put it in the list of all such.
+/* Finish the symbol definitions for one main source file, close off
+ all the lexical contexts for that file (creating struct block's for
+ them), then make the struct symtab for that file and put it in the
+ list of all such.
- END_ADDR is the address of the end of the file's text.
- SECTION is the section number (in objfile->section_offsets) of
- the blockvector and linetable.
+ END_ADDR is the address of the end of the file's text. SECTION is
+ the section number (in objfile->section_offsets) of the blockvector
+ and linetable.
- Note that it is possible for end_symtab() to return NULL. In particular,
- for the DWARF case at least, it will return NULL when it finds a
- compilation unit that has exactly one DIE, a TAG_compile_unit DIE. This
- can happen when we link in an object file that was compiled from an empty
- source file. Returning NULL is probably not the correct thing to do,
- because then gdb will never know about this empty file (FIXME). */
+ Note that it is possible for end_symtab() to return NULL. In
+ particular, for the DWARF case at least, it will return NULL when
+ it finds a compilation unit that has exactly one DIE, a
+ TAG_compile_unit DIE. This can happen when we link in an object
+ file that was compiled from an empty source file. Returning NULL
+ is probably not the correct thing to do, because then gdb will
+ never know about this empty file (FIXME). */
struct symtab *
-end_symtab (end_addr, sort_pending, sort_linevec, objfile, section)
- CORE_ADDR end_addr;
- int sort_pending;
- int sort_linevec;
- struct objfile *objfile;
- int section;
+end_symtab (CORE_ADDR end_addr, struct objfile *objfile, int section)
{
register struct symtab *symtab = NULL;
register struct blockvector *blockvector;
register struct context_stack *cstk;
struct subfile *nextsub;
- /* Finish the lexical context of the last function in the file;
- pop the context stack. */
+ /* Finish the lexical context of the last function in the file; pop
+ the context stack. */
if (context_stack_depth > 0)
{
- context_stack_depth--;
- cstk = &context_stack[context_stack_depth];
+ cstk = pop_context ();
/* Make a block for the local symbols within. */
finish_block (cstk->name, &local_symbols, cstk->old_blocks,
cstk->start_addr, end_addr, objfile);
if (context_stack_depth > 0)
{
- /* This is said to happen with SCO. The old coffread.c code
- simply emptied the context stack, so we do the same. FIXME:
- Find out why it is happening. This is not believed to happen
- in most cases (even for coffread.c); it used to be an abort(). */
+ /* This is said to happen with SCO. The old coffread.c
+ code simply emptied the context stack, so we do the
+ same. FIXME: Find out why it is happening. This is not
+ believed to happen in most cases (even for coffread.c);
+ it used to be an abort(). */
static struct complaint msg =
- {"Context stack not empty in end_symtab", 0, 0};
+ {"Context stack not empty in end_symtab", 0, 0};
complain (&msg);
context_stack_depth = 0;
}
}
- /* It is unfortunate that in xcoff, pending blocks might not be ordered
- in this stage. Especially, blocks for static functions will show up at
- the end. We need to sort them, so tools like `find_pc_function' and
- `find_pc_block' can work reliably. */
-
- if (sort_pending && pending_blocks)
+ /* Reordered executables may have out of order pending blocks; if
+ OBJF_REORDERED is true, then sort the pending blocks. */
+ if ((objfile->flags & OBJF_REORDERED) && pending_blocks)
{
- /* FIXME! Remove this horrid bubble sort and use qsort!!! */
+ /* FIXME! Remove this horrid bubble sort and use merge sort!!! */
int swapped;
do
{
struct pending_block *pb, *pbnext;
-
+
pb = pending_blocks;
pbnext = pb->next;
swapped = 0;
while (pbnext)
{
/* swap blocks if unordered! */
-
- if (BLOCK_START(pb->block) < BLOCK_START(pbnext->block))
+
+ if (BLOCK_START (pb->block) < BLOCK_START (pbnext->block))
{
struct block *tmp = pb->block;
pb->block = pbnext->block;
pb = pbnext;
pbnext = pbnext->next;
}
- } while (swapped);
+ }
+ while (swapped);
}
/* Cleanup any undefined types that have been left hanging around
if (pending_blocks == NULL
&& file_symbols == NULL
- && global_symbols == NULL)
+ && global_symbols == NULL
+ && have_line_numbers == 0)
{
- /* Ignore symtabs that have no functions with real debugging info */
+ /* Ignore symtabs that have no functions with real debugging
+ info. */
blockvector = NULL;
}
else
{
- /* Define the STATIC_BLOCK & GLOBAL_BLOCK, and build the blockvector. */
+ /* Define the STATIC_BLOCK & GLOBAL_BLOCK, and build the
+ blockvector. */
finish_block (0, &file_symbols, 0, last_source_start_addr, end_addr,
objfile);
finish_block (0, &global_symbols, 0, last_source_start_addr, end_addr,
blockvector = make_blockvector (objfile);
}
-#ifdef PROCESS_LINENUMBER_HOOK
- PROCESS_LINENUMBER_HOOK (); /* Needed for xcoff. */
+#ifndef PROCESS_LINENUMBER_HOOK
+#define PROCESS_LINENUMBER_HOOK()
#endif
+ PROCESS_LINENUMBER_HOOK (); /* Needed for xcoff. */
/* Now create the symtab objects proper, one for each subfile. */
/* (The main file is the last one on the chain.) */
for (subfile = subfiles; subfile; subfile = nextsub)
{
int linetablesize = 0;
- /* If we have blocks of symbols, make a symtab.
- Otherwise, just ignore this file and any line number info in it. */
symtab = NULL;
+
+ /* If we have blocks of symbols, make a symtab. Otherwise, just
+ ignore this file and any line number info in it. */
if (blockvector)
{
if (subfile->line_vector)
{
linetablesize = sizeof (struct linetable) +
- subfile->line_vector->nitems * sizeof (struct linetable_entry);
+ subfile->line_vector->nitems * sizeof (struct linetable_entry);
#if 0
- /* I think this is artifact from before it went on the obstack.
- I doubt we'll need the memory between now and when we
- free it later in this function. */
+ /* I think this is artifact from before it went on the
+ obstack. I doubt we'll need the memory between now
+ and when we free it later in this function. */
/* First, shrink the linetable to make more memory. */
subfile->line_vector = (struct linetable *)
xrealloc ((char *) subfile->line_vector, linetablesize);
#endif
- /* If sort_linevec is false, we might want just check to make
- sure they are sorted and complain() if not, as a way of
- tracking down compilers/symbol readers which don't get
- them sorted right. */
- if (sort_linevec)
+ /* Like the pending blocks, the line table may be
+ scrambled in reordered executables. Sort it if
+ OBJF_REORDERED is true. */
+ if (objfile->flags & OBJF_REORDERED)
qsort (subfile->line_vector->item,
subfile->line_vector->nitems,
- sizeof (struct linetable_entry), compare_line_numbers);
+ sizeof (struct linetable_entry), compare_line_numbers);
}
/* Now, allocate a symbol table. */
if (subfile->line_vector)
{
/* Reallocate the line table on the symbol obstack */
- symtab->linetable = (struct linetable *)
- obstack_alloc (&objfile -> symbol_obstack, linetablesize);
+ symtab->linetable = (struct linetable *)
+ obstack_alloc (&objfile->symbol_obstack, linetablesize);
memcpy (symtab->linetable, subfile->line_vector, linetablesize);
}
else
{
/* Reallocate the dirname on the symbol obstack */
symtab->dirname = (char *)
- obstack_alloc (&objfile -> symbol_obstack,
- strlen (subfile -> dirname) + 1);
+ obstack_alloc (&objfile->symbol_obstack,
+ strlen (subfile->dirname) + 1);
strcpy (symtab->dirname, subfile->dirname);
}
else
symtab->free_code = free_linetable;
symtab->free_ptr = NULL;
- /* Use whatever language we have been using for this subfile,
- not the one that was deduced in allocate_symtab from the
- filename. We already did our own deducing when we created
- the subfile, and we may have altered our opinion of what
- language it is from things we found in the symbols. */
+ /* Use whatever language we have been using for this
+ subfile, not the one that was deduced in allocate_symtab
+ from the filename. We already did our own deducing when
+ we created the subfile, and we may have altered our
+ opinion of what language it is from things we found in
+ the symbols. */
symtab->language = subfile->language;
+ /* Save the debug format string (if any) in the symtab */
+ if (subfile->debugformat != NULL)
+ {
+ symtab->debugformat = obsavestring (subfile->debugformat,
+ strlen (subfile->debugformat),
+ &objfile->symbol_obstack);
+ }
+
/* All symtabs for the main file and the subfiles share a
- blockvector, so we need to clear primary for everything but
- the main file. */
+ blockvector, so we need to clear primary for everything
+ but the main file. */
symtab->primary = 0;
}
if (subfile->name != NULL)
{
- free ((PTR) subfile->name);
+ xfree ((void *) subfile->name);
}
if (subfile->dirname != NULL)
{
- free ((PTR) subfile->dirname);
+ xfree ((void *) subfile->dirname);
}
if (subfile->line_vector != NULL)
{
- free ((PTR) subfile->line_vector);
+ xfree ((void *) subfile->line_vector);
+ }
+ if (subfile->debugformat != NULL)
+ {
+ xfree ((void *) subfile->debugformat);
}
nextsub = subfile->next;
- free ((PTR)subfile);
+ xfree ((void *) subfile);
}
/* Set this for the main source file. */
last_source_file = NULL;
current_subfile = NULL;
- return (symtab);
+ return symtab;
}
-
-/* Push a context block. Args are an identifying nesting level (checkable
- when you pop it), and the starting PC address of this context. */
+/* Push a context block. Args are an identifying nesting level
+ (checkable when you pop it), and the starting PC address of this
+ context. */
struct context_stack *
-push_context (desc, valu)
- int desc;
- CORE_ADDR valu;
+push_context (int desc, CORE_ADDR valu)
{
register struct context_stack *new;
new = &context_stack[context_stack_depth++];
new->depth = desc;
new->locals = local_symbols;
+ new->params = param_symbols;
new->old_blocks = pending_blocks;
new->start_addr = valu;
new->name = NULL;
local_symbols = NULL;
+ param_symbols = NULL;
- return (new);
+ return new;
}
-
\f
+
/* Compute a small integer hash code for the given name. */
int
-hashname (name)
- char *name;
+hashname (char *name)
{
- register char *p = name;
- register int total = p[0];
- register int c;
-
- c = p[1];
- total += c << 2;
- if (c)
- {
- c = p[2];
- total += c << 4;
- if (c)
- {
- total += p[3] << 6;
- }
- }
+ return (hash(name,strlen(name)) % HASHSIZE);
+}
+\f
- /* Ensure result is positive. */
- if (total < 0)
- {
- total += (1000 << 6);
- }
- return (total % HASHSIZE);
+void
+record_debugformat (char *format)
+{
+ current_subfile->debugformat = savestring (format, strlen (format));
}
+/* Merge the first symbol list SRCLIST into the second symbol list
+ TARGETLIST by repeated calls to add_symbol_to_list(). This
+ procedure "frees" each link of SRCLIST by adding it to the
+ free_pendings list. Caller must set SRCLIST to a null list after
+ calling this function.
+
+ Void return. */
+
+void
+merge_symbol_lists (struct pending **srclist, struct pending **targetlist)
+{
+ register int i;
+
+ if (!srclist || !*srclist)
+ return;
+
+ /* Merge in elements from current link. */
+ for (i = 0; i < (*srclist)->nsyms; i++)
+ add_symbol_to_list ((*srclist)->symbol[i], targetlist);
+
+ /* Recurse on next. */
+ merge_symbol_lists (&(*srclist)->next, targetlist);
+
+ /* "Free" the current link. */
+ (*srclist)->next = free_pendings;
+ free_pendings = (*srclist);
+}
\f
-/* Initialize anything that needs initializing when starting to read
- a fresh piece of a symbol file, e.g. reading in the stuff corresponding
- to a psymtab. */
+/* Initialize anything that needs initializing when starting to read a
+ fresh piece of a symbol file, e.g. reading in the stuff
+ corresponding to a psymtab. */
void
-buildsym_init ()
+buildsym_init (void)
{
free_pendings = NULL;
file_symbols = NULL;
file, e.g. a shared library). */
void
-buildsym_new_init ()
+buildsym_new_init (void)
{
buildsym_init ();
}
-
-/* Initializer for this module */
-
-void
-_initialize_buildsym ()
-{
-}
projects / deliverable / binutils-gdb.git / blobdiff