/* Generic symbol file reading for the GNU debugger, GDB.
Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
- 1999, 2000, 2001, 2002 Free Software Foundation, Inc.
+ 1999, 2000, 2001, 2002, 2003 Free Software Foundation, Inc.
Contributed by Cygnus Support, using pieces from other GDB modules.
Boston, MA 02111-1307, USA. */
#include "defs.h"
+#include "bfdlink.h"
#include "symtab.h"
#include "gdbtypes.h"
#include "gdbcore.h"
#include "complaints.h"
#include "demangle.h"
#include "inferior.h" /* for write_pc */
+#include "filenames.h" /* for DOSish file names */
#include "gdb-stabs.h"
#include "gdb_obstack.h"
#include "completer.h"
#include "bcache.h"
+#include "hashtab.h"
+#include <readline/readline.h>
+#include "gdb_assert.h"
+#include "block.h"
#include <sys/types.h>
#include <fcntl.h>
static void add_shared_symbol_files_command (char *, int);
+static void reread_separate_symbols (struct objfile *objfile);
+
static void cashier_psymtab (struct partial_symtab *);
bfd *symfile_bfd_open (char *);
static void info_ext_lang_command (char *args, int from_tty);
+static char *find_separate_debug_file (struct objfile *objfile);
+
static void init_filename_language_table (void);
void _initialize_symfile (void);
static int
compare_symbols (const void *s1p, const void *s2p)
{
- register struct symbol **s1, **s2;
+ struct symbol **s1, **s2;
s1 = (struct symbol **) s1p;
s2 = (struct symbol **) s2p;
- return (strcmp (SYMBOL_SOURCE_NAME (*s1), SYMBOL_SOURCE_NAME (*s2)));
+ return (strcmp (SYMBOL_NATURAL_NAME (*s1), SYMBOL_NATURAL_NAME (*s2)));
}
-/*
-
- LOCAL FUNCTION
-
- compare_psymbols -- compare two partial symbols by name
-
- DESCRIPTION
-
- Given pointers to pointers to two partial symbol table entries,
- compare them by name and return -N, 0, or +N (ala strcmp).
- Typically used by sorting routines like qsort().
-
- NOTES
-
- Does direct compare of first two characters before punting
- and passing to strcmp for longer compares. Note that the
- original version had a bug whereby two null strings or two
- identically named one character strings would return the
- comparison of memory following the null byte.
-
- */
+/* This compares two partial symbols by names, using strcmp_iw_ordered
+ for the comparison. */
static int
compare_psymbols (const void *s1p, const void *s2p)
{
- register struct partial_symbol **s1, **s2;
- register char *st1, *st2;
-
- s1 = (struct partial_symbol **) s1p;
- s2 = (struct partial_symbol **) s2p;
- st1 = SYMBOL_SOURCE_NAME (*s1);
- st2 = SYMBOL_SOURCE_NAME (*s2);
-
+ struct partial_symbol *const *s1 = s1p;
+ struct partial_symbol *const *s2 = s2p;
- if ((st1[0] - st2[0]) || !st1[0])
- {
- return (st1[0] - st2[0]);
- }
- else if ((st1[1] - st2[1]) || !st1[1])
- {
- return (st1[1] - st2[1]);
- }
- else
- {
- return (strcmp (st1, st2));
- }
+ return strcmp_iw_ordered (SYMBOL_NATURAL_NAME (*s1),
+ SYMBOL_NATURAL_NAME (*s2));
}
void
compare_psymbols);
}
-/* Call sort_block_syms to sort alphabetically the symbols of one block. */
-
-void
-sort_block_syms (register struct block *b)
-{
- qsort (&BLOCK_SYM (b, 0), BLOCK_NSYMS (b),
- sizeof (struct symbol *), compare_symbols);
-}
-
-/* Call sort_symtab_syms to sort alphabetically
- the symbols of each block of one symtab. */
-
-void
-sort_symtab_syms (register struct symtab *s)
-{
- register struct blockvector *bv;
- int nbl;
- int i;
- register struct block *b;
-
- if (s == 0)
- return;
- bv = BLOCKVECTOR (s);
- nbl = BLOCKVECTOR_NBLOCKS (bv);
- for (i = 0; i < nbl; i++)
- {
- b = BLOCKVECTOR_BLOCK (bv, i);
- if (BLOCK_SHOULD_SORT (b))
- sort_block_syms (b);
- }
-}
-
/* Make a null terminated copy of the string at PTR with SIZE characters in
the obstack pointed to by OBSTACKP . Returns the address of the copy.
Note that the string at PTR does not have to be null terminated, I.E. it
may be part of a larger string and we are only saving a substring. */
char *
-obsavestring (char *ptr, int size, struct obstack *obstackp)
+obsavestring (const char *ptr, int size, struct obstack *obstackp)
{
- register char *p = (char *) obstack_alloc (obstackp, size + 1);
+ char *p = (char *) obstack_alloc (obstackp, size + 1);
/* Open-coded memcpy--saves function call time. These strings are usually
short. FIXME: Is this really still true with a compiler that can
inline memcpy? */
{
- register char *p1 = ptr;
- register char *p2 = p;
- char *end = ptr + size;
+ const char *p1 = ptr;
+ char *p2 = p;
+ const char *end = ptr + size;
while (p1 != end)
*p2++ = *p1++;
}
obconcat (struct obstack *obstackp, const char *s1, const char *s2,
const char *s3)
{
- register int len = strlen (s1) + strlen (s2) + strlen (s3) + 1;
- register char *val = (char *) obstack_alloc (obstackp, len);
+ int len = strlen (s1) + strlen (s2) + strlen (s3) + 1;
+ char *val = (char *) obstack_alloc (obstackp, len);
strcpy (val, s1);
strcat (val, s2);
strcat (val, s3);
case inline. */
struct symtab *
-psymtab_to_symtab (register struct partial_symtab *pst)
+psymtab_to_symtab (struct partial_symtab *pst)
{
/* If it's been looked up before, return it. */
if (pst->symtab)
/* Examination of non-executable.o files. Short-circuit this stuff. */
objfile->ei.entry_point = INVALID_ENTRY_POINT;
}
- objfile->ei.entry_file_lowpc = INVALID_ENTRY_LOWPC;
- objfile->ei.entry_file_highpc = INVALID_ENTRY_HIGHPC;
+ objfile->ei.deprecated_entry_file_lowpc = INVALID_ENTRY_LOWPC;
+ objfile->ei.deprecated_entry_file_highpc = INVALID_ENTRY_HIGHPC;
objfile->ei.entry_func_lowpc = INVALID_ENTRY_LOWPC;
objfile->ei.entry_func_highpc = INVALID_ENTRY_HIGHPC;
objfile->ei.main_func_lowpc = INVALID_ENTRY_LOWPC;
lowest-addressed loadable section. */
void
-find_lowest_section (bfd *abfd, asection *sect, PTR obj)
+find_lowest_section (bfd *abfd, asection *sect, void *obj)
{
asection **lowest = (asection **) obj;
*lowest = sect;
}
+/* Create a new section_addr_info, with room for NUM_SECTIONS. */
+
+struct section_addr_info *
+alloc_section_addr_info (size_t num_sections)
+{
+ struct section_addr_info *sap;
+ size_t size;
+
+ size = (sizeof (struct section_addr_info)
+ + sizeof (struct other_sections) * (num_sections - 1));
+ sap = (struct section_addr_info *) xmalloc (size);
+ memset (sap, 0, size);
+ sap->num_sections = num_sections;
+
+ return sap;
+}
/* Build (allocate and populate) a section_addr_info struct from
an existing section table. */
const struct section_table *stp;
int oidx;
- sap = xmalloc (sizeof (struct section_addr_info));
- memset (sap, 0, sizeof (struct section_addr_info));
+ sap = alloc_section_addr_info (end - start);
for (stp = start, oidx = 0; stp != end; stp++)
{
if (bfd_get_section_flags (stp->bfd,
stp->the_bfd_section) & (SEC_ALLOC | SEC_LOAD)
- && oidx < MAX_SECTIONS)
+ && oidx < end - start)
{
sap->other[oidx].addr = stp->addr;
sap->other[oidx].name
{
int idx;
- for (idx = 0; idx < MAX_SECTIONS; idx++)
+ for (idx = 0; idx < sap->num_sections; idx++)
if (sap->other[idx].name)
xfree (sap->other[idx].name);
xfree (sap);
}
-/* Parse the user's idea of an offset for dynamic linking, into our idea
- of how to represent it for fast symbol reading. This is the default
- version of the sym_fns.sym_offsets function for symbol readers that
- don't need to do anything special. It allocates a section_offsets table
- for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */
-
-void
-default_symfile_offsets (struct objfile *objfile,
- struct section_addr_info *addrs)
+/* Initialize OBJFILE's sect_index_* members. */
+static void
+init_objfile_sect_indices (struct objfile *objfile)
{
+ asection *sect;
int i;
- asection *sect = NULL;
-
- objfile->num_sections = SECT_OFF_MAX;
- objfile->section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS);
- memset (objfile->section_offsets, 0, SIZEOF_SECTION_OFFSETS);
-
- /* Now calculate offsets for section that were specified by the
- caller. */
- for (i = 0; i < MAX_SECTIONS && addrs->other[i].name; i++)
- {
- struct other_sections *osp ;
-
- osp = &addrs->other[i] ;
- if (osp->addr == 0)
- continue;
-
- /* Record all sections in offsets */
- /* The section_offsets in the objfile are here filled in using
- the BFD index. */
- (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr;
- }
-
- /* Remember the bfd indexes for the .text, .data, .bss and
- .rodata sections. */
-
+
sect = bfd_get_section_by_name (objfile->obfd, ".text");
if (sect)
objfile->sect_index_text = sect->index;
}
}
+
+/* Parse the user's idea of an offset for dynamic linking, into our idea
+ of how to represent it for fast symbol reading. This is the default
+ version of the sym_fns.sym_offsets function for symbol readers that
+ don't need to do anything special. It allocates a section_offsets table
+ for the objectfile OBJFILE and stuffs ADDR into all of the offsets. */
+
+void
+default_symfile_offsets (struct objfile *objfile,
+ struct section_addr_info *addrs)
+{
+ int i;
+
+ objfile->num_sections = bfd_count_sections (objfile->obfd);
+ objfile->section_offsets = (struct section_offsets *)
+ obstack_alloc (&objfile->psymbol_obstack,
+ SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
+ memset (objfile->section_offsets, 0,
+ SIZEOF_N_SECTION_OFFSETS (objfile->num_sections));
+
+ /* Now calculate offsets for section that were specified by the
+ caller. */
+ for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
+ {
+ struct other_sections *osp ;
+
+ osp = &addrs->other[i] ;
+ if (osp->addr == 0)
+ continue;
+
+ /* Record all sections in offsets */
+ /* The section_offsets in the objfile are here filled in using
+ the BFD index. */
+ (objfile->section_offsets)->offsets[osp->sectindex] = osp->addr;
+ }
+
+ /* Remember the bfd indexes for the .text, .data, .bss and
+ .rodata sections. */
+ init_objfile_sect_indices (objfile);
+}
+
+
/* Process a symbol file, as either the main file or as a dynamically
loaded file.
OBJFILE is where the symbols are to be read from.
- ADDR is the address where the text segment was loaded, unless the
- objfile is the main symbol file, in which case it is zero.
+ ADDRS is the list of section load addresses. If the user has given
+ an 'add-symbol-file' command, then this is the list of offsets and
+ addresses he or she provided as arguments to the command; or, if
+ we're handling a shared library, these are the actual addresses the
+ sections are loaded at, according to the inferior's dynamic linker
+ (as gleaned by GDB's shared library code). We convert each address
+ into an offset from the section VMA's as it appears in the object
+ file, and then call the file's sym_offsets function to convert this
+ into a format-specific offset table --- a `struct section_offsets'.
+ If ADDRS is non-zero, OFFSETS must be zero.
+
+ OFFSETS is a table of section offsets already in the right
+ format-specific representation. NUM_OFFSETS is the number of
+ elements present in OFFSETS->offsets. If OFFSETS is non-zero, we
+ assume this is the proper table the call to sym_offsets described
+ above would produce. Instead of calling sym_offsets, we just dump
+ it right into objfile->section_offsets. (When we're re-reading
+ symbols from an objfile, we don't have the original load address
+ list any more; all we have is the section offset table.) If
+ OFFSETS is non-zero, ADDRS must be zero.
MAINLINE is nonzero if this is the main symbol file, or zero if
it's an extra symbol file such as dynamically loaded code.
the symbol reading (and complaints can be more terse about it). */
void
-syms_from_objfile (struct objfile *objfile, struct section_addr_info *addrs,
- int mainline, int verbo)
-{
- asection *lower_sect;
- asection *sect;
- CORE_ADDR lower_offset;
- struct section_addr_info local_addr;
+syms_from_objfile (struct objfile *objfile,
+ struct section_addr_info *addrs,
+ struct section_offsets *offsets,
+ int num_offsets,
+ int mainline,
+ int verbo)
+{
+ struct section_addr_info *local_addr = NULL;
struct cleanup *old_chain;
- int i;
- /* If ADDRS is NULL, initialize the local section_addr_info struct and
- point ADDRS to it. We now establish the convention that an addr of
- zero means no load address was specified. */
-
- if (addrs == NULL)
- {
- memset (&local_addr, 0, sizeof (local_addr));
- addrs = &local_addr;
- }
+ gdb_assert (! (addrs && offsets));
init_entry_point_info (objfile);
find_sym_fns (objfile);
if an error occurs during symbol reading. */
old_chain = make_cleanup_free_objfile (objfile);
+ /* If ADDRS and OFFSETS are both NULL, put together a dummy address
+ list. We now establish the convention that an addr of zero means
+ no load address was specified. */
+ if (! addrs && ! offsets)
+ {
+ local_addr
+ = alloc_section_addr_info (bfd_count_sections (objfile->obfd));
+ make_cleanup (xfree, local_addr);
+ addrs = local_addr;
+ }
+
+ /* Now either addrs or offsets is non-zero. */
+
if (mainline)
{
/* We will modify the main symbol table, make sure that all its users
We no longer warn if the lowest section is not a text segment (as
happens for the PA64 port. */
- if (!mainline)
+ if (!mainline && addrs && addrs->other[0].name)
{
+ asection *lower_sect;
+ asection *sect;
+ CORE_ADDR lower_offset;
+ int i;
+
/* Find lowest loadable section to be used as starting point for
continguous sections. FIXME!! won't work without call to find
.text first, but this assumes text is lowest section. */
lower_sect = bfd_get_section_by_name (objfile->obfd, ".text");
if (lower_sect == NULL)
bfd_map_over_sections (objfile->obfd, find_lowest_section,
- (PTR) &lower_sect);
+ &lower_sect);
if (lower_sect == NULL)
warning ("no loadable sections found in added symbol-file %s",
objfile->name);
else
lower_offset = 0;
- /* Calculate offsets for the loadable sections.
+ /* Calculate offsets for the loadable sections.
FIXME! Sections must be in order of increasing loadable section
so that contiguous sections can use the lower-offset!!!
- Adjust offsets if the segments are not contiguous.
- If the section is contiguous, its offset should be set to
+ Adjust offsets if the segments are not contiguous.
+ If the section is contiguous, its offset should be set to
the offset of the highest loadable section lower than it
(the loadable section directly below it in memory).
this_offset = lower_offset = lower_addr - lower_orig_addr */
- /* Calculate offsets for sections. */
- for (i=0 ; i < MAX_SECTIONS && addrs->other[i].name; i++)
- {
- if (addrs->other[i].addr != 0)
- {
- sect = bfd_get_section_by_name (objfile->obfd, addrs->other[i].name);
- if (sect)
- {
- addrs->other[i].addr -= bfd_section_vma (objfile->obfd, sect);
- lower_offset = addrs->other[i].addr;
- /* This is the index used by BFD. */
- addrs->other[i].sectindex = sect->index ;
- }
- else
- {
- warning ("section %s not found in %s", addrs->other[i].name,
- objfile->name);
- addrs->other[i].addr = 0;
- }
- }
- else
- addrs->other[i].addr = lower_offset;
- }
+ for (i = 0; i < addrs->num_sections && addrs->other[i].name; i++)
+ {
+ if (addrs->other[i].addr != 0)
+ {
+ sect = bfd_get_section_by_name (objfile->obfd,
+ addrs->other[i].name);
+ if (sect)
+ {
+ addrs->other[i].addr
+ -= bfd_section_vma (objfile->obfd, sect);
+ lower_offset = addrs->other[i].addr;
+ /* This is the index used by BFD. */
+ addrs->other[i].sectindex = sect->index ;
+ }
+ else
+ {
+ warning ("section %s not found in %s",
+ addrs->other[i].name,
+ objfile->name);
+ addrs->other[i].addr = 0;
+ }
+ }
+ else
+ addrs->other[i].addr = lower_offset;
+ }
}
/* Initialize symbol reading routines for this objfile, allow complaints to
(*objfile->sf->sym_init) (objfile);
clear_complaints (&symfile_complaints, 1, verbo);
- (*objfile->sf->sym_offsets) (objfile, addrs);
+ if (addrs)
+ (*objfile->sf->sym_offsets) (objfile, addrs);
+ else
+ {
+ size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets);
-#ifndef IBM6000_TARGET
+ /* Just copy in the offset table directly as given to us. */
+ objfile->num_sections = num_offsets;
+ objfile->section_offsets
+ = ((struct section_offsets *)
+ obstack_alloc (&objfile->psymbol_obstack, size));
+ memcpy (objfile->section_offsets, offsets, size);
+
+ init_objfile_sect_indices (objfile);
+ }
+
+#ifndef DEPRECATED_IBM6000_TARGET
/* This is a SVR4/SunOS specific hack, I think. In any event, it
screws RS/6000. sym_offsets should be doing this sort of thing,
because it knows the mapping between bfd sections and
int i;
for (i = 0;
- !s_addr && i < MAX_SECTIONS && addrs->other[i].name;
+ !s_addr && i < addrs->num_sections && addrs->other[i].name;
i++)
if (strcmp (bfd_section_name (s->objfile->obfd,
s->the_bfd_section),
s->offset += s_addr;
}
}
-#endif /* not IBM6000_TARGET */
+#endif /* not DEPRECATED_IBM6000_TARGET */
(*objfile->sf->sym_read) (objfile, mainline);
- if (!have_partial_symbols () && !have_full_symbols ())
- {
- wrap_here ("");
- printf_filtered ("(no debugging symbols found)...");
- wrap_here ("");
- }
-
/* Don't allow char * to have a typename (else would get caddr_t).
Ditto void *. FIXME: Check whether this is now done by all the
symbol readers themselves (many of them now do), and if so remove
/* Discard cleanups as symbol reading was successful. */
discard_cleanups (old_chain);
-
- /* Call this after reading in a new symbol table to give target
- dependent code a crack at the new symbols. For instance, this
- could be used to update the values of target-specific symbols GDB
- needs to keep track of (such as _sigtramp, or whatever). */
-
- TARGET_SYMFILE_POSTREAD (objfile);
}
/* Perform required actions after either reading in the initial
NAME is the file name (which will be tilde-expanded and made
absolute herein) (but we don't free or modify NAME itself).
- FROM_TTY says how verbose to be. MAINLINE specifies whether this
- is the main symbol file, or whether it's an extra symbol file such
- as dynamically loaded code. If !mainline, ADDR is the address
- where the text segment was loaded.
+
+ FROM_TTY says how verbose to be.
+
+ MAINLINE specifies whether this is the main symbol file, or whether
+ it's an extra symbol file such as dynamically loaded code.
+
+ ADDRS, OFFSETS, and NUM_OFFSETS are as described for
+ syms_from_objfile, above. ADDRS is ignored when MAINLINE is
+ non-zero.
Upon success, returns a pointer to the objfile that was added.
Upon failure, jumps back to command level (never returns). */
-
-struct objfile *
-symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs,
- int mainline, int flags)
+static struct objfile *
+symbol_file_add_with_addrs_or_offsets (char *name, int from_tty,
+ struct section_addr_info *addrs,
+ struct section_offsets *offsets,
+ int num_offsets,
+ int mainline, int flags)
{
struct objfile *objfile;
struct partial_symtab *psymtab;
+ char *debugfile;
bfd *abfd;
+ struct section_addr_info *orig_addrs;
+ struct cleanup *my_cleanups;
/* Open a bfd for the file, and give user a chance to burp if we'd be
interactively wiping out any existing symbols. */
objfile = allocate_objfile (abfd, flags);
+ orig_addrs = alloc_section_addr_info (bfd_count_sections (abfd));
+ my_cleanups = make_cleanup (xfree, orig_addrs);
+ if (addrs)
+ {
+ int i;
+ orig_addrs->num_sections = addrs->num_sections;
+ for (i = 0; i < addrs->num_sections; i++)
+ orig_addrs->other[i] = addrs->other[i];
+ }
+
/* If the objfile uses a mapped symbol file, and we have a psymtab for
it, then skip reading any symbols at this time. */
*/
if (from_tty || info_verbose)
{
- printf_filtered ("Mapped symbols for %s...", name);
+ printf_unfiltered ("Mapped symbols for %s...", name);
wrap_here ("");
gdb_flush (gdb_stdout);
}
pre_add_symbol_hook (name);
else
{
- printf_filtered ("Reading symbols from %s...", name);
+ printf_unfiltered ("Reading symbols from %s...", name);
wrap_here ("");
gdb_flush (gdb_stdout);
}
}
- syms_from_objfile (objfile, addrs, mainline, from_tty);
+ syms_from_objfile (objfile, addrs, offsets, num_offsets,
+ mainline, from_tty);
}
/* We now have at least a partial symbol table. Check to see if the
{
if (from_tty || info_verbose)
{
- printf_filtered ("expanding to full symbols...");
+ printf_unfiltered ("expanding to full symbols...");
wrap_here ("");
gdb_flush (gdb_stdout);
}
}
}
+ debugfile = find_separate_debug_file (objfile);
+ if (debugfile)
+ {
+ if (addrs != NULL)
+ {
+ objfile->separate_debug_objfile
+ = symbol_file_add (debugfile, from_tty, orig_addrs, 0, flags);
+ }
+ else
+ {
+ objfile->separate_debug_objfile
+ = symbol_file_add (debugfile, from_tty, NULL, 0, flags);
+ }
+ objfile->separate_debug_objfile->separate_debug_objfile_backlink
+ = objfile;
+
+ /* Put the separate debug object before the normal one, this is so that
+ usage of the ALL_OBJFILES_SAFE macro will stay safe. */
+ put_objfile_before (objfile->separate_debug_objfile, objfile);
+
+ xfree (debugfile);
+ }
+
+ if (!have_partial_symbols () && !have_full_symbols ())
+ {
+ wrap_here ("");
+ printf_unfiltered ("(no debugging symbols found)...");
+ wrap_here ("");
+ }
+
if (from_tty || info_verbose)
{
if (post_add_symbol_hook)
post_add_symbol_hook ();
else
{
- printf_filtered ("done.\n");
- gdb_flush (gdb_stdout);
+ printf_unfiltered ("done.\n");
}
}
+ /* We print some messages regardless of whether 'from_tty ||
+ info_verbose' is true, so make sure they go out at the right
+ time. */
+ gdb_flush (gdb_stdout);
+
+ do_cleanups (my_cleanups);
+
if (objfile->sf == NULL)
return objfile; /* No symbols. */
return (objfile);
}
+
+/* Process a symbol file, as either the main file or as a dynamically
+ loaded file. See symbol_file_add_with_addrs_or_offsets's comments
+ for details. */
+struct objfile *
+symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs,
+ int mainline, int flags)
+{
+ return symbol_file_add_with_addrs_or_offsets (name, from_tty, addrs, 0, 0,
+ mainline, flags);
+}
+
+
/* Call symbol_file_add() with default values and update whatever is
affected by the loading of a new main().
Used when the file is supplied in the gdb command line
#endif
}
+static char *
+get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out)
+{
+ asection *sect;
+ bfd_size_type debuglink_size;
+ unsigned long crc32;
+ char *contents;
+ int crc_offset;
+ unsigned char *p;
+
+ sect = bfd_get_section_by_name (objfile->obfd, ".gnu_debuglink");
+
+ if (sect == NULL)
+ return NULL;
+
+ debuglink_size = bfd_section_size (objfile->obfd, sect);
+
+ contents = xmalloc (debuglink_size);
+ bfd_get_section_contents (objfile->obfd, sect, contents,
+ (file_ptr)0, (bfd_size_type)debuglink_size);
+
+ /* Crc value is stored after the filename, aligned up to 4 bytes. */
+ crc_offset = strlen (contents) + 1;
+ crc_offset = (crc_offset + 3) & ~3;
+
+ crc32 = bfd_get_32 (objfile->obfd, (bfd_byte *) (contents + crc_offset));
+
+ *crc32_out = crc32;
+ return contents;
+}
+
+static int
+separate_debug_file_exists (const char *name, unsigned long crc)
+{
+ unsigned long file_crc = 0;
+ int fd;
+ char buffer[8*1024];
+ int count;
+
+ fd = open (name, O_RDONLY | O_BINARY);
+ if (fd < 0)
+ return 0;
+
+ while ((count = read (fd, buffer, sizeof (buffer))) > 0)
+ file_crc = gnu_debuglink_crc32 (file_crc, buffer, count);
+
+ close (fd);
+
+ return crc == file_crc;
+}
+
+static char *debug_file_directory = NULL;
+
+#if ! defined (DEBUG_SUBDIRECTORY)
+#define DEBUG_SUBDIRECTORY ".debug"
+#endif
+
+static char *
+find_separate_debug_file (struct objfile *objfile)
+{
+ asection *sect;
+ char *basename;
+ char *dir;
+ char *debugfile;
+ char *name_copy;
+ bfd_size_type debuglink_size;
+ unsigned long crc32;
+ int i;
+
+ basename = get_debug_link_info (objfile, &crc32);
+
+ if (basename == NULL)
+ return NULL;
+
+ dir = xstrdup (objfile->name);
+
+ /* Strip off the final filename part, leaving the directory name,
+ followed by a slash. Objfile names should always be absolute and
+ tilde-expanded, so there should always be a slash in there
+ somewhere. */
+ for (i = strlen(dir) - 1; i >= 0; i--)
+ {
+ if (IS_DIR_SEPARATOR (dir[i]))
+ break;
+ }
+ gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i]));
+ dir[i+1] = '\0';
+
+ debugfile = alloca (strlen (debug_file_directory) + 1
+ + strlen (dir)
+ + strlen (DEBUG_SUBDIRECTORY)
+ + strlen ("/")
+ + strlen (basename)
+ + 1);
+
+ /* First try in the same directory as the original file. */
+ strcpy (debugfile, dir);
+ strcat (debugfile, basename);
+
+ if (separate_debug_file_exists (debugfile, crc32))
+ {
+ xfree (basename);
+ xfree (dir);
+ return xstrdup (debugfile);
+ }
+
+ /* Then try in the subdirectory named DEBUG_SUBDIRECTORY. */
+ strcpy (debugfile, dir);
+ strcat (debugfile, DEBUG_SUBDIRECTORY);
+ strcat (debugfile, "/");
+ strcat (debugfile, basename);
+
+ if (separate_debug_file_exists (debugfile, crc32))
+ {
+ xfree (basename);
+ xfree (dir);
+ return xstrdup (debugfile);
+ }
+
+ /* Then try in the global debugfile directory. */
+ strcpy (debugfile, debug_file_directory);
+ strcat (debugfile, "/");
+ strcat (debugfile, dir);
+ strcat (debugfile, basename);
+
+ if (separate_debug_file_exists (debugfile, crc32))
+ {
+ xfree (basename);
+ xfree (dir);
+ return xstrdup (debugfile);
+ }
+
+ xfree (basename);
+ xfree (dir);
+ return NULL;
+}
+
+
/* This is the symbol-file command. Read the file, analyze its
symbols, and add a struct symtab to a symtab list. The syntax of
the command is rather bizarre--(1) buildargv implements various
|| our_flavour == bfd_target_tekhex_flavour)
return; /* No symbols. */
- /* Special kludge for apollo. See dstread.c. */
- if (STREQN (our_target, "apollo", 6))
- our_flavour = (enum bfd_flavour) -2;
-
for (sf = symtab_fns; sf != NULL; sf = sf->next)
{
if (our_flavour == sf->sym_flavour)
for other targets too. */
write_pc (entry);
- /* FIXME: are we supposed to call symbol_file_add or not? According to
- a comment from remote-mips.c (where a call to symbol_file_add was
- commented out), making the call confuses GDB if more than one file is
- loaded in. remote-nindy.c had no call to symbol_file_add, but remote-vx.c
- does. */
+ /* FIXME: are we supposed to call symbol_file_add or not? According
+ to a comment from remote-mips.c (where a call to symbol_file_add
+ was commented out), making the call confuses GDB if more than one
+ file is loaded in. Some targets do (e.g., remote-vx.c) but
+ others don't (or didn't - perhaphs they have all been deleted). */
print_transfer_performance (gdb_stdout, cbdata.data_count,
cbdata.write_count, end_time - start_time);
instead a call to target_link() (in target.c) would supply the
value to use. We are now discontinuing this type of ad hoc syntax. */
-/* ARGSUSED */
static void
add_symbol_file_command (char *args, int from_tty)
{
int expecting_sec_name = 0;
int expecting_sec_addr = 0;
- struct
+ struct sect_opt
{
char *name;
char *value;
- } sect_opts[SECT_OFF_MAX];
+ };
- struct section_addr_info section_addrs;
+ struct section_addr_info *section_addrs;
+ struct sect_opt *sect_opts = NULL;
+ size_t num_sect_opts = 0;
struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL);
+ num_sect_opts = 16;
+ sect_opts = (struct sect_opt *) xmalloc (num_sect_opts
+ * sizeof (struct sect_opt));
+
dont_repeat ();
if (args == NULL)
/* Make a copy of the string that we can safely write into. */
args = xstrdup (args);
- /* Ensure section_addrs is initialized */
- memset (§ion_addrs, 0, sizeof (section_addrs));
-
while (*args != '\000')
{
/* Any leading spaces? */
to load the program. */
sect_opts[section_index].name = ".text";
sect_opts[section_index].value = arg;
- section_index++;
+ if (++section_index > num_sect_opts)
+ {
+ num_sect_opts *= 2;
+ sect_opts = ((struct sect_opt *)
+ xrealloc (sect_opts,
+ num_sect_opts
+ * sizeof (struct sect_opt)));
+ }
}
else
{
else
if (strcmp (arg, "-s") == 0)
{
- if (section_index >= SECT_OFF_MAX)
- error ("Too many sections specified.");
expecting_sec_name = 1;
expecting_sec_addr = 1;
}
{
sect_opts[section_index].value = arg;
expecting_sec_addr = 0;
- section_index++;
+ if (++section_index > num_sect_opts)
+ {
+ num_sect_opts *= 2;
+ sect_opts = ((struct sect_opt *)
+ xrealloc (sect_opts,
+ num_sect_opts
+ * sizeof (struct sect_opt)));
+ }
}
else
error ("USAGE: add-symbol-file <filename> <textaddress> [-mapped] [-readnow] [-s <secname> <addr>]*");
statements because local_hex_string returns a local static
string. */
- printf_filtered ("add symbol table from file \"%s\" at\n", filename);
+ printf_unfiltered ("add symbol table from file \"%s\" at\n", filename);
+ section_addrs = alloc_section_addr_info (section_index);
+ make_cleanup (xfree, section_addrs);
for (i = 0; i < section_index; i++)
{
CORE_ADDR addr;
char *val = sect_opts[i].value;
char *sec = sect_opts[i].name;
- val = sect_opts[i].value;
- if (val[0] == '0' && val[1] == 'x')
- addr = strtoul (val+2, NULL, 16);
- else
- addr = strtoul (val, NULL, 10);
+ addr = parse_and_eval_address (val);
/* Here we store the section offsets in the order they were
entered on the command line. */
- section_addrs.other[sec_num].name = sec;
- section_addrs.other[sec_num].addr = addr;
- printf_filtered ("\t%s_addr = %s\n",
+ section_addrs->other[sec_num].name = sec;
+ section_addrs->other[sec_num].addr = addr;
+ printf_unfiltered ("\t%s_addr = %s\n",
sec,
local_hex_string ((unsigned long)addr));
sec_num++;
if (from_tty && (!query ("%s", "")))
error ("Not confirmed.");
- symbol_file_add (filename, from_tty, §ion_addrs, 0, flags);
+ symbol_file_add (filename, from_tty, section_addrs, 0, flags);
/* Getting new symbols may change our opinion about what is
frameless. */
{
if (objfile->obfd)
{
-#ifdef IBM6000_TARGET
+#ifdef DEPRECATED_IBM6000_TARGET
/* If this object is from a shared library, then you should
stat on the library name, not member name. */
if (res != 0)
{
/* FIXME, should use print_sys_errmsg but it's not filtered. */
- printf_filtered ("`%s' has disappeared; keeping its symbols.\n",
+ printf_unfiltered ("`%s' has disappeared; keeping its symbols.\n",
objfile->name);
continue;
}
int num_offsets;
char *obfd_filename;
- printf_filtered ("`%s' has changed; re-reading symbols.\n",
+ printf_unfiltered ("`%s' has changed; re-reading symbols.\n",
objfile->name);
/* There are various functions like symbol_file_add,
/* Save the offsets, we will nuke them with the rest of the
psymbol_obstack. */
num_offsets = objfile->num_sections;
- offsets = (struct section_offsets *) alloca (SIZEOF_SECTION_OFFSETS);
- memcpy (offsets, objfile->section_offsets, SIZEOF_SECTION_OFFSETS);
+ offsets = ((struct section_offsets *)
+ alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets)));
+ memcpy (offsets, objfile->section_offsets,
+ SIZEOF_N_SECTION_OFFSETS (num_offsets));
/* Nuke all the state that we will re-read. Much of the following
code which sets things to NULL really is necessary to tell
objfile->psymbol_cache = bcache_xmalloc ();
bcache_xfree (objfile->macro_cache);
objfile->macro_cache = bcache_xmalloc ();
+ if (objfile->demangled_names_hash != NULL)
+ {
+ htab_delete (objfile->demangled_names_hash);
+ objfile->demangled_names_hash = NULL;
+ }
obstack_free (&objfile->psymbol_obstack, 0);
obstack_free (&objfile->symbol_obstack, 0);
obstack_free (&objfile->type_obstack, 0);
objfile->psymtabs = NULL;
objfile->free_psymtabs = NULL;
objfile->msymbols = NULL;
+ objfile->sym_private = NULL;
objfile->minimal_symbol_count = 0;
memset (&objfile->msymbol_hash, 0,
sizeof (objfile->msymbol_hash));
memset (&objfile->msymbol_demangled_hash, 0,
sizeof (objfile->msymbol_demangled_hash));
objfile->fundamental_types = NULL;
+ clear_objfile_data (objfile);
if (objfile->sf != NULL)
{
(*objfile->sf->sym_finish) (objfile);
error ("Can't find the file sections in `%s': %s",
objfile->name, bfd_errmsg (bfd_get_error ()));
}
+ terminate_minimal_symbol_table (objfile);
/* We use the same section offsets as from last time. I'm not
sure whether that is always correct for shared libraries. */
objfile->section_offsets = (struct section_offsets *)
- obstack_alloc (&objfile->psymbol_obstack, SIZEOF_SECTION_OFFSETS);
- memcpy (objfile->section_offsets, offsets, SIZEOF_SECTION_OFFSETS);
+ obstack_alloc (&objfile->psymbol_obstack,
+ SIZEOF_N_SECTION_OFFSETS (num_offsets));
+ memcpy (objfile->section_offsets, offsets,
+ SIZEOF_N_SECTION_OFFSETS (num_offsets));
objfile->num_sections = num_offsets;
/* What the hell is sym_new_init for, anyway? The concept of
if (!have_partial_symbols () && !have_full_symbols ())
{
wrap_here ("");
- printf_filtered ("(no debugging symbols found)\n");
+ printf_unfiltered ("(no debugging symbols found)\n");
wrap_here ("");
}
objfile->flags |= OBJF_SYMS;
again now. */
objfile->mtime = new_modtime;
reread_one = 1;
-
- /* Call this after reading in a new symbol table to give target
- dependent code a crack at the new symbols. For instance, this
- could be used to update the values of target-specific symbols GDB
- needs to keep track of (such as _sigtramp, or whatever). */
-
- TARGET_SYMFILE_POSTREAD (objfile);
+ reread_separate_symbols (objfile);
}
}
}
if (reread_one)
clear_symtab_users ();
}
+
+
+/* Handle separate debug info for OBJFILE, which has just been
+ re-read:
+ - If we had separate debug info before, but now we don't, get rid
+ of the separated objfile.
+ - If we didn't have separated debug info before, but now we do,
+ read in the new separated debug info file.
+ - If the debug link points to a different file, toss the old one
+ and read the new one.
+ This function does *not* handle the case where objfile is still
+ using the same separate debug info file, but that file's timestamp
+ has changed. That case should be handled by the loop in
+ reread_symbols already. */
+static void
+reread_separate_symbols (struct objfile *objfile)
+{
+ char *debug_file;
+ unsigned long crc32;
+
+ /* Does the updated objfile's debug info live in a
+ separate file? */
+ debug_file = find_separate_debug_file (objfile);
+
+ if (objfile->separate_debug_objfile)
+ {
+ /* There are two cases where we need to get rid of
+ the old separated debug info objfile:
+ - if the new primary objfile doesn't have
+ separated debug info, or
+ - if the new primary objfile has separate debug
+ info, but it's under a different filename.
+
+ If the old and new objfiles both have separate
+ debug info, under the same filename, then we're
+ okay --- if the separated file's contents have
+ changed, we will have caught that when we
+ visited it in this function's outermost
+ loop. */
+ if (! debug_file
+ || strcmp (debug_file, objfile->separate_debug_objfile->name) != 0)
+ free_objfile (objfile->separate_debug_objfile);
+ }
+
+ /* If the new objfile has separate debug info, and we
+ haven't loaded it already, do so now. */
+ if (debug_file
+ && ! objfile->separate_debug_objfile)
+ {
+ /* Use the same section offset table as objfile itself.
+ Preserve the flags from objfile that make sense. */
+ objfile->separate_debug_objfile
+ = (symbol_file_add_with_addrs_or_offsets
+ (debug_file,
+ info_verbose, /* from_tty: Don't override the default. */
+ 0, /* No addr table. */
+ objfile->section_offsets, objfile->num_sections,
+ 0, /* Not mainline. See comments about this above. */
+ objfile->flags & (OBJF_MAPPED | OBJF_REORDERED
+ | OBJF_SHARED | OBJF_READNOW
+ | OBJF_USERLOADED)));
+ objfile->separate_debug_objfile->separate_debug_objfile_backlink
+ = objfile;
+ }
+}
+
+
\f
add_filename_language (".c++", language_cplus);
add_filename_language (".java", language_java);
add_filename_language (".class", language_java);
- /* OBSOLETE add_filename_language (".ch", language_chill); */
- /* OBSOLETE add_filename_language (".c186", language_chill); */
- /* OBSOLETE add_filename_language (".c286", language_chill); */
add_filename_language (".m", language_objc);
add_filename_language (".f", language_fortran);
add_filename_language (".F", language_fortran);
struct symtab *
allocate_symtab (char *filename, struct objfile *objfile)
{
- register struct symtab *symtab;
+ struct symtab *symtab;
symtab = (struct symtab *)
obstack_alloc (&objfile->symbol_obstack, sizeof (struct symtab));
compilation units. We want to blow away any old info about these
compilation units, regardless of which objfiles they arrived in. --gnu. */
- register struct symtab *s;
- register struct symtab *prev;
- register struct partial_symtab *ps;
+ struct symtab *s;
+ struct symtab *prev;
+ struct partial_symtab *ps;
struct blockvector *bv;
int blewit = 0;
}
\f
/* Add a symbol with a long value to a psymtab.
- Since one arg is a struct, we pass in a ptr and deref it (sigh). */
-
-void
-add_psymbol_to_list (char *name, int namelength, namespace_enum namespace,
+ Since one arg is a struct, we pass in a ptr and deref it (sigh).
+ Return the partial symbol that has been added. */
+
+/* NOTE: carlton/2003-09-11: The reason why we return the partial
+ symbol is so that callers can get access to the symbol's demangled
+ name, which they don't have any cheap way to determine otherwise.
+ (Currenly, dwarf2read.c is the only file who uses that information,
+ though it's possible that other readers might in the future.)
+ Elena wasn't thrilled about that, and I don't blame her, but we
+ couldn't come up with a better way to get that information. If
+ it's needed in other situations, we could consider breaking up
+ SYMBOL_SET_NAMES to provide access to the demangled name lookup
+ cache. */
+
+const struct partial_symbol *
+add_psymbol_to_list (char *name, int namelength, domain_enum domain,
enum address_class class,
struct psymbol_allocation_list *list, long val, /* Value as a long */
CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
enum language language, struct objfile *objfile)
{
- register struct partial_symbol *psym;
+ struct partial_symbol *psym;
char *buf = alloca (namelength + 1);
/* psymbol is static so that there will be no uninitialized gaps in the
structure which might contain random data, causing cache misses in
/* Create local copy of the partial symbol */
memcpy (buf, name, namelength);
buf[namelength] = '\0';
- SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache);
/* val and coreaddr are mutually exclusive, one of them *will* be zero */
if (val != 0)
{
}
SYMBOL_SECTION (&psymbol) = 0;
SYMBOL_LANGUAGE (&psymbol) = language;
- PSYMBOL_NAMESPACE (&psymbol) = namespace;
+ PSYMBOL_DOMAIN (&psymbol) = domain;
PSYMBOL_CLASS (&psymbol) = class;
- SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language);
+
+ SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile);
/* Stash the partial symbol away in the cache */
psym = bcache (&psymbol, sizeof (struct partial_symbol), objfile->psymbol_cache);
}
*list->next++ = psym;
OBJSTAT (objfile, n_psyms++);
+
+ return psym;
}
/* Add a symbol with a long value to a psymtab. This differs from
void
add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name,
- int dem_namelength, namespace_enum namespace,
+ int dem_namelength, domain_enum domain,
enum address_class class,
struct psymbol_allocation_list *list, long val, /* Value as a long */
CORE_ADDR coreaddr, /* Value as a CORE_ADDR */
enum language language,
struct objfile *objfile)
{
- register struct partial_symbol *psym;
+ struct partial_symbol *psym;
char *buf = alloca (namelength + 1);
/* psymbol is static so that there will be no uninitialized gaps in the
structure which might contain random data, causing cache misses in
memcpy (buf, name, namelength);
buf[namelength] = '\0';
- SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache);
+ DEPRECATED_SYMBOL_NAME (&psymbol) = bcache (buf, namelength + 1, objfile->psymbol_cache);
buf = alloca (dem_namelength + 1);
memcpy (buf, dem_name, dem_namelength);
SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol) =
bcache (buf, dem_namelength + 1, objfile->psymbol_cache);
break;
- /* OBSOLETE case language_chill: */
- /* OBSOLETE SYMBOL_CHILL_DEMANGLED_NAME (&psymbol) = */
- /* OBSOLETE bcache (buf, dem_namelength + 1, objfile->psymbol_cache); */
-
/* FIXME What should be done for the default case? Ignoring for now. */
}
}
SYMBOL_SECTION (&psymbol) = 0;
SYMBOL_LANGUAGE (&psymbol) = language;
- PSYMBOL_NAMESPACE (&psymbol) = namespace;
+ PSYMBOL_DOMAIN (&psymbol) = domain;
PSYMBOL_CLASS (&psymbol) = class;
SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language);
if (objfile->global_psymbols.list)
{
- xmfree (objfile->md, (PTR) objfile->global_psymbols.list);
+ xmfree (objfile->md, objfile->global_psymbols.list);
}
if (objfile->static_psymbols.list)
{
- xmfree (objfile->md, (PTR) objfile->static_psymbols.list);
+ xmfree (objfile->md, objfile->static_psymbols.list);
}
/* Current best guess is that approximately a twentieth
/* Return true if the mapped ranges of sections A and B overlap, false
otherwise. */
-int
+static int
sections_overlap (asection *a, asection *b)
{
/* FIXME: need bfd *, so we can use bfd_section_vma methods. */
sec2->the_bfd_section))
{
if (info_verbose)
- printf_filtered ("Note: section %s unmapped by overlap\n",
+ printf_unfiltered ("Note: section %s unmapped by overlap\n",
bfd_section_name (objfile->obfd,
sec2->the_bfd_section));
sec2->ovly_mapped = 0; /* sec2 overlaps sec: unmap sec2 */
overlay_debugging = ovly_auto;
enable_overlay_breakpoints ();
if (info_verbose)
- printf_filtered ("Automatic overlay debugging enabled.");
+ printf_unfiltered ("Automatic overlay debugging enabled.");
}
/* Function: overlay_manual_command
overlay_debugging = ovly_on;
disable_overlay_breakpoints ();
if (info_verbose)
- printf_filtered ("Overlay debugging enabled.");
+ printf_unfiltered ("Overlay debugging enabled.");
}
/* Function: overlay_off_command
overlay_debugging = ovly_off;
disable_overlay_breakpoints ();
if (info_verbose)
- printf_filtered ("Overlay debugging disabled.");
+ printf_unfiltered ("Overlay debugging disabled.");
}
static void
}
}
+/* Set the output sections and output offsets for section SECTP in
+ ABFD. The relocation code in BFD will read these offsets, so we
+ need to be sure they're initialized. We map each section to itself,
+ with no offset; this means that SECTP->vma will be honored. */
+
+static void
+symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy)
+{
+ sectp->output_section = sectp;
+ sectp->output_offset = 0;
+}
+
+/* Relocate the contents of a debug section SECTP in ABFD. The
+ contents are stored in BUF if it is non-NULL, or returned in a
+ malloc'd buffer otherwise.
+
+ For some platforms and debug info formats, shared libraries contain
+ relocations against the debug sections (particularly for DWARF-2;
+ one affected platform is PowerPC GNU/Linux, although it depends on
+ the version of the linker in use). Also, ELF object files naturally
+ have unresolved relocations for their debug sections. We need to apply
+ the relocations in order to get the locations of symbols correct. */
+
+bfd_byte *
+symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf)
+{
+ /* We're only interested in debugging sections with relocation
+ information. */
+ if ((sectp->flags & SEC_RELOC) == 0)
+ return NULL;
+ if ((sectp->flags & SEC_DEBUGGING) == 0)
+ return NULL;
+
+ /* We will handle section offsets properly elsewhere, so relocate as if
+ all sections begin at 0. */
+ bfd_map_over_sections (abfd, symfile_dummy_outputs, NULL);
+
+ return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL);
+}
void
_initialize_symfile (void)
"cache.\n",
&setlist),
&showlist);
+
+ debug_file_directory = xstrdup (DEBUGDIR);
+ c = (add_set_cmd
+ ("debug-file-directory", class_support, var_string,
+ (char *) &debug_file_directory,
+ "Set the directory where separate debug symbols are searched for.\n"
+ "Separate debug symbols are first searched for in the same\n"
+ "directory as the binary, then in the `" DEBUG_SUBDIRECTORY
+ "' subdirectory,\n"
+ "and lastly at the path of the directory of the binary with\n"
+ "the global debug-file directory prepended\n",
+ &setlist));
+ add_show_from_set (c, &showlist);
+ set_cmd_completer (c, filename_completer);
}
projects / deliverable / binutils-gdb.git / blobdiff