/usr/src/gnu/usr.bin/binutils/gdb/symfile.c

Bug Summary

File:	src/gnu/usr.bin/binutils/gdb/symfile.c
Warning:	line 232, column 11 Array access (from variable 'p') results in a null pointer dereference
Annotated Source Code

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clang -cc1 -cc1 -triple amd64-unknown-openbsd7.0 -analyze -disable-free -disable-llvm-verifier -discard-value-names -main-file-name symfile.c -analyzer-store=region -analyzer-opt-analyze-nested-blocks -analyzer-checker=core -analyzer-checker=apiModeling -analyzer-checker=unix -analyzer-checker=deadcode -analyzer-checker=security.insecureAPI.UncheckedReturn -analyzer-checker=security.insecureAPI.getpw -analyzer-checker=security.insecureAPI.gets -analyzer-checker=security.insecureAPI.mktemp -analyzer-checker=security.insecureAPI.mkstemp -analyzer-checker=security.insecureAPI.vfork -analyzer-checker=nullability.NullPassedToNonnull -analyzer-checker=nullability.NullReturnedFromNonnull -analyzer-output plist -w -setup-static-analyzer -mrelocation-model pic -pic-level 1 -pic-is-pie -mframe-pointer=all -relaxed-aliasing -fno-rounding-math -mconstructor-aliases -munwind-tables -target-cpu x86-64 -target-feature +retpoline-indirect-calls -target-feature +retpoline-indirect-branches -tune-cpu generic -debugger-tuning=gdb -fcoverage-compilation-dir=/usr/src/gnu/usr.bin/binutils/obj/gdb -resource-dir /usr/local/lib/clang/13.0.0 -D PIE_DEFAULT=1 -I . -I /usr/src/gnu/usr.bin/binutils/gdb -I /usr/src/gnu/usr.bin/binutils/gdb/config -D LOCALEDIR="/usr/share/locale" -D HAVE_CONFIG_H -I /usr/src/gnu/usr.bin/binutils/gdb/../include/opcode -I ../bfd -I /usr/src/gnu/usr.bin/binutils/gdb/../bfd -I /usr/src/gnu/usr.bin/binutils/gdb/../include -I ../intl -I /usr/src/gnu/usr.bin/binutils/gdb/../intl -D MI_OUT=1 -D TUI=1 -internal-isystem /usr/local/lib/clang/13.0.0/include -internal-externc-isystem /usr/include -O2 -fdebug-compilation-dir=/usr/src/gnu/usr.bin/binutils/obj/gdb -ferror-limit 19 -fwrapv -D_RET_PROTECTOR -ret-protector -fgnuc-version=4.2.1 -fcommon -vectorize-loops -vectorize-slp -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-valloc -fno-builtin-free -fno-builtin-strdup -fno-builtin-strndup -analyzer-output=html -faddrsig -D__GCC_HAVE_DWARF2_CFI_ASM=1 -o /home/ben/Projects/vmm/scan-build/2022-01-12-194120-40624-1 -x c /usr/src/gnu/usr.bin/binutils/gdb/symfile.c
1/* Generic symbol file reading for the GNU debugger, GDB.

 Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998,
 1999, 2000, 2001, 2002, 2003, 2004 Free Software Foundation, Inc.

 Contributed by Cygnus Support, using pieces from other GDB modules.

 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 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., 59 Temple Place - Suite 330,
 Boston, MA 02111-1307, USA.  */

25#include "defs.h"
26#include "bfdlink.h"
27#include "symtab.h"
28#include "gdbtypes.h"
29#include "gdbcore.h"
30#include "frame.h"
31#include "target.h"
32#include "value.h"
33#include "symfile.h"
34#include "objfiles.h"
35#include "source.h"
36#include "gdbcmd.h"
37#include "breakpoint.h"
38#include "language.h"
39#include "complaints.h"
40#include "demangle.h"
41#include "inferior.h"		/* for write_pc */
42#include "filenames.h"		/* for DOSish file names */
43#include "gdb-stabs.h"
44#include "gdb_obstack.h"
45#include "completer.h"
46#include "bcache.h"
47#include "hashtab.h"
48#include "readline/readline.h"
49#include "gdb_assert.h"
50#include "block.h"
51#include "varobj.h"

53#include <sys/types.h>
54#include <fcntl.h>
55#include "gdb_string.h"
56#include "gdb_stat.h"
57#include <ctype.h>
58#include <time.h>

60#ifndef O_BINARY0
61#define O_BINARY0 0
62#endif

64int (*deprecated_ui_load_progress_hook) (const char *section, unsigned long num);
65void (*deprecated_show_load_progress) (const char *section,
	    unsigned long section_sent,
	    unsigned long section_size,
	    unsigned long total_sent,
	    unsigned long total_size);
70void (*deprecated_pre_add_symbol_hook) (const char *);
71void (*deprecated_post_add_symbol_hook) (void);
72void (*deprecated_target_new_objfile_hook) (struct objfile *);

74static void clear_symtab_users_cleanup (void *ignore);

76/* Global variables owned by this file */
77int readnow_symbol_files;	/* Read full symbols immediately */

79/* External variables and functions referenced. */

81extern void report_transfer_performance (unsigned long, time_t, time_t);

83/* Functions this file defines */

85#if 0
86static int simple_read_overlay_region_table (void);
87static void simple_free_overlay_region_table (void);
88#endif

90static void set_initial_language (void);

92static void load_command (char *, int);

94static void symbol_file_add_main_1 (char *args, int from_tty, int flags);

96static void add_symbol_file_command (char *, int);

98static void add_shared_symbol_files_command (char *, int);

100static void reread_separate_symbols (struct objfile *objfile);

102static void cashier_psymtab (struct partial_symtab *);

104bfd *symfile_bfd_open (char *);

106int get_section_index (struct objfile *, char *);

108static void find_sym_fns (struct objfile *);

110static void decrement_reading_symtab (void *);

112static void overlay_invalidate_all (void);

114static int overlay_is_mapped (struct obj_section *);

116void list_overlays_command (char *, int);

118void map_overlay_command (char *, int);

120void unmap_overlay_command (char *, int);

122static void overlay_auto_command (char *, int);

124static void overlay_manual_command (char *, int);

126static void overlay_off_command (char *, int);

128static void overlay_load_command (char *, int);

130static void overlay_command (char *, int);

132static void simple_free_overlay_table (void);

134static void read_target_long_array (CORE_ADDR, unsigned int *, int);

136static int simple_read_overlay_table (void);

138static int simple_overlay_update_1 (struct obj_section *);

140static void add_filename_language (char *ext, enum language lang);

142static void set_ext_lang_command (char *args, int from_tty);

144static void info_ext_lang_command (char *args, int from_tty);

146static char *find_separate_debug_file (struct objfile *objfile);

148static void init_filename_language_table (void);

150void _initialize_symfile (void);

152/* List of all available sym_fns.  On gdb startup, each object file reader
 calls add_symtab_fns() to register information on each format it is
 prepared to read. */

156static struct sym_fns *symtab_fns = NULL((void*)0);

158/* Flag for whether user will be reloading symbols multiple times.
 Defaults to ON for VxWorks, otherwise OFF.  */

161#ifdef SYMBOL_RELOADING_DEFAULT
162int symbol_reloading = SYMBOL_RELOADING_DEFAULT;
163#else
164int symbol_reloading = 0;
165#endif

167/* If non-zero, shared library symbols will be added automatically
 when the inferior is created, new libraries are loaded, or when
 attaching to the inferior.  This is almost always what users will
 want to have happen; but for very large programs, the startup time
 will be excessive, and so if this is a problem, the user can clear
 this flag and then add the shared library symbols as needed.  Note
 that there is a potential for confusion, since if the shared
 library symbols are not loaded, commands like "info fun" will *not*
 report all the functions that are actually present. */

177int auto_solib_add = 1;

179/* For systems that support it, a threshold size in megabytes.  If
 automatically adding a new library's symbol table to those already
 known to the debugger would cause the total shared library symbol
 size to exceed this threshhold, then the shlib's symbols are not
 added.  The threshold is ignored if the user explicitly asks for a
 shlib to be added, such as when using the "sharedlibrary"
 command. */

187int auto_solib_limit;
188

190/* This compares two partial symbols by names, using strcmp_iw_ordered
 for the comparison.  */

193static int
194compare_psymbols (const void *s1p, const void *s2p)
195{
struct partial_symbol *const *s1 = s1p;
struct partial_symbol *const *s2 = s2p;

return strcmp_iw_ordered (SYMBOL_SEARCH_NAME (*s1)(symbol_search_name (&(*s1)->ginfo)),
	    SYMBOL_SEARCH_NAME (*s2)(symbol_search_name (&(*s2)->ginfo)));
201}

203void
204sort_pst_symbols (struct partial_symtab *pst)
205{
/* Sort the global list; don't sort the static list */

qsort (pst->objfile->global_psymbols.list + pst->globals_offset,
pst->n_global_syms, sizeof (struct partial_symbol *),
compare_psymbols);
211}

213/* 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. */

218char *
219obsavestring (const char *ptr, int size, struct obstack *obstackp)
220{
char *p = (char *) obstack_alloc (obstackp, size + 1)__extension__ ({ struct obstack *__h = (obstackp); __extension__
 ({ struct obstack *__o = (__h); int __len = ((size + 1)); if
 (__o->chunk_limit - __o->next_free < __len) _obstack_newchunk
 (__o, __len); ((__o)->next_free += (__len)); (void) 0; })
; __extension__ ({ struct obstack *__o1 = (__h); void *value;
 value = (void *) __o1->object_base; if (__o1->next_free
 == value) __o1->maybe_empty_object = 1; __o1->next_free
 = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask
) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1->
next_free - (char *)__o1->chunk > __o1->chunk_limit -
 (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit
; __o1->object_base = __o1->next_free; value; }); });
11
←
Assuming the condition is false→
12
←
Taking false branch→
13
←
Taking true branch→
14
←
Assuming the condition is false→
15
←
Taking false branch→
16
←
'p' initialized to a null pointer value→
/* 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? */
{
  const char *p1 = ptr;
  char *p2 = p;
  const char *end = ptr + size;
  while (p1 != end)
17
←
Loop condition is false. Execution continues on line 232→
    *p2++ = *p1++;
}
p[size] = 0;
18
←
Array access (from variable 'p') results in a null pointer dereference
return p;
234}

236/* Concatenate strings S1, S2 and S3; return the new string.  Space is found
 in the obstack pointed to by OBSTACKP.  */

239char *
240obconcat (struct obstack *obstackp, const char *s1, const char *s2,
 const char *s3)
242{
int len = strlen (s1) + strlen (s2) + strlen (s3) + 1;
char *val = (char *) obstack_alloc (obstackp, len)__extension__ ({ struct obstack *__h = (obstackp); __extension__
 ({ struct obstack *__o = (__h); int __len = ((len)); if (__o
->chunk_limit - __o->next_free < __len) _obstack_newchunk
 (__o, __len); ((__o)->next_free += (__len)); (void) 0; })
; __extension__ ({ struct obstack *__o1 = (__h); void *value;
 value = (void *) __o1->object_base; if (__o1->next_free
 == value) __o1->maybe_empty_object = 1; __o1->next_free
 = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask
) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1->
next_free - (char *)__o1->chunk > __o1->chunk_limit -
 (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit
; __o1->object_base = __o1->next_free; value; }); });
strcpy (val, s1);
strcat (val, s2);
strcat (val, s3);
return val;
249}

251/* True if we are nested inside psymtab_to_symtab. */

253int currently_reading_symtab = 0;

255static void
256decrement_reading_symtab (void *dummy)
257{
currently_reading_symtab--;
259}

261/* Get the symbol table that corresponds to a partial_symtab.
 This is fast after the first time you do it.  In fact, there
 is an even faster macro PSYMTAB_TO_SYMTAB that does the fast
 case inline.  */

266struct symtab *
267psymtab_to_symtab (struct partial_symtab *pst)
268{
/* If it's been looked up before, return it. */
if (pst->symtab)
  return pst->symtab;

/* If it has not yet been read in, read it.  */
if (!pst->readin)
  {
    struct cleanup *back_to = make_cleanup (decrement_reading_symtab, NULL((void*)0));
    currently_reading_symtab++;
    (*pst->read_symtab) (pst);
    do_cleanups (back_to);
  }

return pst->symtab;
283}

285/* Remember the lowest-addressed loadable section we've seen.
 This function is called via bfd_map_over_sections.

 In case of equal vmas, the section with the largest size becomes the
 lowest-addressed loadable section.

 If the vmas and sizes are equal, the last section is considered the
 lowest-addressed loadable section.  */

294void
295find_lowest_section (bfd *abfd, asection *sect, void *obj)
296{
asection **lowest = (asection **) obj;

if (0 == (bfd_get_section_flags (abfd, sect)((sect)->flags + 0) & SEC_LOAD0x002))
  return;
if (!*lowest)
  *lowest = sect;		/* First loadable section */
else if (bfd_section_vma (abfd, *lowest)((*lowest)->vma) > bfd_section_vma (abfd, sect)((sect)->vma))
  *lowest = sect;		/* A lower loadable section */
else if (bfd_section_vma (abfd, *lowest)((*lowest)->vma) == bfd_section_vma (abfd, sect)((sect)->vma)
  && (bfd_section_size (abfd, (*lowest))(((*lowest))->_raw_size)
      <= bfd_section_size (abfd, sect)((sect)->_raw_size)))
  *lowest = sect;
309}

311/* Create a new section_addr_info, with room for NUM_SECTIONS.  */

313struct section_addr_info *
314alloc_section_addr_info (size_t num_sections)
315{
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;
326}


329/* Return a freshly allocated copy of ADDRS.  The section names, if
 any, are also freshly allocated copies of those in ADDRS.  */
331struct section_addr_info *
332copy_section_addr_info (struct section_addr_info *addrs)
333{
struct section_addr_info *copy
  = alloc_section_addr_info (addrs->num_sections);
int i;

copy->num_sections = addrs->num_sections;
for (i = 0; i < addrs->num_sections; i++)
  {
    copy->other[i].addr = addrs->other[i].addr;
    if (addrs->other[i].name)
      copy->other[i].name = xstrdup (addrs->other[i].name);
    else
      copy->other[i].name = NULL((void*)0);
    copy->other[i].sectindex = addrs->other[i].sectindex;
  }

return copy;
350}



354/* Build (allocate and populate) a section_addr_info struct from
 an existing section table. */

357extern struct section_addr_info *
358build_section_addr_info_from_section_table (const struct section_table *start,
                                          const struct section_table *end)
360{
struct section_addr_info *sap;
const struct section_table *stp;
int oidx;

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)->flags + 0)
		 stp->the_bfd_section)((stp->the_bfd_section)->flags + 0) & (SEC_ALLOC0x001 | SEC_LOAD0x002)
 && oidx < end - start)
{
 sap->other[oidx].addr = stp->addr;
 sap->other[oidx].name
   = xstrdup (bfd_section_name (stp->bfd, stp->the_bfd_section)((stp->the_bfd_section)->name));
 sap->other[oidx].sectindex = stp->the_bfd_section->index;
 oidx++;
}
  }

return sap;
382}


385/* Free all memory allocated by build_section_addr_info_from_section_table. */

387extern void
388free_section_addr_info (struct section_addr_info *sap)
389{
int idx;

for (idx = 0; idx < sap->num_sections; idx++)
  if (sap->other[idx].name)
    xfree (sap->other[idx].name);
xfree (sap);
396}


399/* Initialize OBJFILE's sect_index_* members.  */
400static void
401init_objfile_sect_indices (struct objfile *objfile)
402{
asection *sect;
int i;

sect = bfd_get_section_by_name (objfile->obfd, ".text");
if (sect)
  objfile->sect_index_text = sect->index;

sect = bfd_get_section_by_name (objfile->obfd, ".data");
if (sect)
  objfile->sect_index_data = sect->index;

sect = bfd_get_section_by_name (objfile->obfd, ".bss");
if (sect)
  objfile->sect_index_bss = sect->index;

sect = bfd_get_section_by_name (objfile->obfd, ".rodata");
if (sect)
  objfile->sect_index_rodata = sect->index;

/* This is where things get really weird...  We MUST have valid
   indices for the various sect_index_* members or gdb will abort.
   So if for example, there is no ".text" section, we have to
   accomodate that.  Except when explicitly adding symbol files at
   some address, section_offsets contains nothing but zeros, so it
   doesn't matter which slot in section_offsets the individual
   sect_index_* members index into.  So if they are all zero, it is
   safe to just point all the currently uninitialized indices to the
   first slot. */

for (i = 0; i < objfile->num_sections; i++)
  {
    if (ANOFFSET (objfile->section_offsets, i)((i == -1) ? (internal_error ("/usr/src/gnu/usr.bin/binutils/gdb/symfile.c"
, 434, "Section index is uninitialized"), -1) : objfile->section_offsets
->offsets[i]) != 0)
{
 break;
}
  }
if (i == objfile->num_sections)
  {
    if (objfile->sect_index_text == -1)
objfile->sect_index_text = 0;
    if (objfile->sect_index_data == -1)
objfile->sect_index_data = 0;
    if (objfile->sect_index_bss == -1)
objfile->sect_index_bss = 0;
    if (objfile->sect_index_rodata == -1)
objfile->sect_index_rodata = 0;
  }
450}


453/* 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.  */

459void
460default_symfile_offsets (struct objfile *objfile,
	 struct section_addr_info *addrs)
462{
int i;

objfile->num_sections = bfd_count_sections (objfile->obfd)((objfile->obfd)->section_count);
objfile->section_offsets = (struct section_offsets *)
  obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack
); __extension__ ({ struct obstack *__o = (__h); int __len = (
((sizeof (struct section_offsets) + sizeof (((struct section_offsets
 *) 0)->offsets) * ((objfile->num_sections)-1)))); if (
__o->chunk_limit - __o->next_free < __len) _obstack_newchunk
 (__o, __len); ((__o)->next_free += (__len)); (void) 0; })
; __extension__ ({ struct obstack *__o1 = (__h); void *value;
 value = (void *) __o1->object_base; if (__o1->next_free
 == value) __o1->maybe_empty_object = 1; __o1->next_free
 = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask
) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1->
next_free - (char *)__o1->chunk > __o1->chunk_limit -
 (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit
; __o1->object_base = __o1->next_free; value; }); })
   SIZEOF_N_SECTION_OFFSETS (objfile->num_sections))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack
); __extension__ ({ struct obstack *__o = (__h); int __len = (
((sizeof (struct section_offsets) + sizeof (((struct section_offsets
 *) 0)->offsets) * ((objfile->num_sections)-1)))); if (
__o->chunk_limit - __o->next_free < __len) _obstack_newchunk
 (__o, __len); ((__o)->next_free += (__len)); (void) 0; })
; __extension__ ({ struct obstack *__o1 = (__h); void *value;
 value = (void *) __o1->object_base; if (__o1->next_free
 == value) __o1->maybe_empty_object = 1; __o1->next_free
 = (((((__o1->next_free) - (char *) 0)+__o1->alignment_mask
) & ~ (__o1->alignment_mask)) + (char *) 0); if (__o1->
next_free - (char *)__o1->chunk > __o1->chunk_limit -
 (char *)__o1->chunk) __o1->next_free = __o1->chunk_limit
; __o1->object_base = __o1->next_free; value; }); });
memset (objfile->section_offsets, 0,
 SIZEOF_N_SECTION_OFFSETS (objfile->num_sections)(sizeof (struct section_offsets) + sizeof (((struct section_offsets
 *) 0)->offsets) * ((objfile->num_sections)-1)));

/* 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);
491}


494/* 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.

 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.

 VERBO is nonzero if the caller has printed a verbose message about
 the symbol reading (and complaints can be more terse about it).  */

526void
527syms_from_objfile (struct objfile *objfile,
                 struct section_addr_info *addrs,
                 struct section_offsets *offsets,
                 int num_offsets,
   int mainline,
                 int verbo)
533{
struct section_addr_info *local_addr = NULL((void*)0);
struct cleanup *old_chain;

gdb_assert (! (addrs && offsets))((void) ((! (addrs && offsets)) ? 0 : (internal_error
 ("/usr/src/gnu/usr.bin/binutils/gdb/symfile.c", 537, "%s: Assertion `%s' failed."
, __PRETTY_FUNCTION__, "! (addrs && offsets)"), 0)));

init_entry_point_info (objfile);
find_sym_fns (objfile);

if (objfile->sf == NULL((void*)0))
  return;	/* No symbols. */

/* Make sure that partially constructed symbol tables will be cleaned up
   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)((objfile->obfd)->section_count));
    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
       will be cleaned up if an error occurs during symbol reading.  */
    make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/);

    /* Since no error yet, throw away the old symbol table.  */

    if (symfile_objfile != NULL((void*)0))
{
 free_objfile (symfile_objfile);
 symfile_objfile = NULL((void*)0);
}

    /* Currently we keep symbols from the add-symbol-file command.
       If the user wants to get rid of them, they should do "symbol-file"
       without arguments first.  Not sure this is the best behavior
       (PR 2207).  */

    (*objfile->sf->sym_new_init) (objfile);
  }

/* Convert addr into an offset rather than an absolute address.
   We find the lowest address of a loaded segment in the objfile,
   and assume that <addr> is where that got loaded.

   We no longer warn if the lowest section is not a text segment (as
   happens for the PA64 port.  */
if (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((void*)0))
bfd_map_over_sections (objfile->obfd, find_lowest_section,
	       &lower_sect);
    if (lower_sect == NULL((void*)0))
warning ("no loadable sections found in added symbol-file %s",
 objfile->name);
    else
if ((bfd_get_section_flags (objfile->obfd, lower_sect)((lower_sect)->flags + 0) & SEC_CODE0x020) == 0)
 warning ("Lowest section in %s is %s at %s",
   objfile->name,
   bfd_section_name (objfile->obfd, lower_sect)((lower_sect)->name),
   paddr (bfd_section_vma (objfile->obfd, lower_sect)((lower_sect)->vma)));
    if (lower_sect != NULL((void*)0))
lower_offset = bfd_section_vma (objfile->obfd, lower_sect)((lower_sect)->vma);
    else
lower_offset = 0;

    /* 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
 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 */

      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)((sect)->vma);
                  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
   appear for this new file, and record how verbose to be, then do the
   initial symbol reading for this file. */

(*objfile->sf->sym_init) (objfile);
clear_complaints (&symfile_complaints, 1, verbo);

if (addrs)
  (*objfile->sf->sym_offsets) (objfile, addrs);
else
  {
    size_t size = SIZEOF_N_SECTION_OFFSETS (num_offsets)(sizeof (struct section_offsets) + sizeof (((struct section_offsets
 *) 0)->offsets) * ((num_offsets)-1));

    /* 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->objfile_obstack, size)__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack
); __extension__ ({ struct obstack *__o = (__h); int __len = (
(size)); if (__o->chunk_limit - __o->next_free < __len
) _obstack_newchunk (__o, __len); ((__o)->next_free += (__len
)); (void) 0; }); __extension__ ({ struct obstack *__o1 = (__h
); void *value; value = (void *) __o1->object_base; if (__o1
->next_free == value) __o1->maybe_empty_object = 1; __o1
->next_free = (((((__o1->next_free) - (char *) 0)+__o1->
alignment_mask) & ~ (__o1->alignment_mask)) + (char *)
 0); if (__o1->next_free - (char *)__o1->chunk > __o1
->chunk_limit - (char *)__o1->chunk) __o1->next_free
 = __o1->chunk_limit; __o1->object_base = __o1->next_free
; value; }); }));
    memcpy (objfile->section_offsets, offsets, size);

    init_objfile_sect_indices (objfile);
  }

678#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
   section_offsets.  */
/* This is a hack.  As far as I can tell, section offsets are not
   target dependent.  They are all set to addr with a couple of
   exceptions.  The exceptions are sysvr4 shared libraries, whose
   offsets are kept in solib structures anyway and rs6000 xcoff
   which handles shared libraries in a completely unique way.

   Section offsets are built similarly, except that they are built
   by adding addr in all cases because there is no clear mapping
   from section_offsets into actual sections.  Note that solib.c
   has a different algorithm for finding section offsets.

   These should probably all be collapsed into some target
   independent form of shared library support.  FIXME.  */

if (addrs)
  {
    struct obj_section *s;

/* Map section offsets in "addr" back to the object's
   sections by comparing the section names with bfd's
   section names.  Then adjust the section address by
   the offset. */ /* for gdb/13815 */

    ALL_OBJFILE_OSECTIONS (objfile, s)for (s = objfile->sections; s < objfile->sections_end
; s++)
{
 CORE_ADDR s_addr = 0;
 int i;

    for (i = 0;
        !s_addr && i < addrs->num_sections && addrs->other[i].name;
 i++)
      if (strcmp (bfd_section_name (s->objfile->obfd,((s->the_bfd_section)->name)
			    s->the_bfd_section)((s->the_bfd_section)->name),
	  addrs->other[i].name) == 0)
        s_addr = addrs->other[i].addr; /* end added for gdb/13815 */

 s->addr -= s->offset;
 s->addr += s_addr;
 s->endaddr -= s->offset;
 s->endaddr += s_addr;
 s->offset += s_addr;
}
  }
726#endif /* not DEPRECATED_IBM6000_TARGET */

(*objfile->sf->sym_read) (objfile, mainline);

/* 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
   it from here.  */

TYPE_NAME (lookup_pointer_type (builtin_type_char))(lookup_pointer_type (builtin_type_char))->main_type->name = 0;
TYPE_NAME (lookup_pointer_type (builtin_type_void))(lookup_pointer_type (builtin_type_void))->main_type->name = 0;

/* Mark the objfile has having had initial symbol read attempted.  Note
   that this does not mean we found any symbols... */

objfile->flags |= OBJF_SYMS(1 << 1);

/* Discard cleanups as symbol reading was successful.  */

discard_cleanups (old_chain);
746}

748/* Perform required actions after either reading in the initial
 symbols for a new objfile, or mapping in the symbols from a reusable
 objfile. */

752void
753new_symfile_objfile (struct objfile *objfile, int mainline, int verbo)
754{

/* If this is the main symbol file we have to clean up all users of the
   old main symbol file. Otherwise it is sufficient to fixup all the
   breakpoints that may have been redefined by this symbol file.  */
if (mainline)
  {
    /* OK, make it the "real" symbol file.  */
    symfile_objfile = objfile;

    clear_symtab_users ();
  }
else
  {
    breakpoint_re_set ();
  }

/* We're done reading the symbol file; finish off complaints.  */
clear_complaints (&symfile_complaints, 0, verbo);
773}

775/* Process a symbol file, as either the main file or as a dynamically
 loaded file.

 ABFD is a BFD already open on the file, as from symfile_bfd_open.
 This BFD will be closed on error, and is always consumed by this function.

 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). */
792static struct objfile *
793symbol_file_add_with_addrs_or_offsets (bfd *abfd, int from_tty,
                                     struct section_addr_info *addrs,
                                     struct section_offsets *offsets,
                                     int num_offsets,
                                     int mainline, int flags)
798{
struct objfile *objfile;
struct partial_symtab *psymtab;
char *debugfile;
struct section_addr_info *orig_addrs = NULL((void*)0);
struct cleanup *my_cleanups;
const char *name = bfd_get_filename (abfd)((char *) (abfd)->filename);

my_cleanups = make_cleanup_bfd_close (abfd);

/* Give user a chance to burp if we'd be
   interactively wiping out any existing symbols.  */

if ((have_full_symbols () || have_partial_symbols ())
    && mainline
    && from_tty
    && !query ("Load new symbol table from \"%s\"? ", name))
  error ("Not confirmed.");

objfile = allocate_objfile (abfd, flags);
discard_cleanups (my_cleanups);

if (addrs)
  {
    orig_addrs = copy_section_addr_info (addrs);
    make_cleanup_free_section_addr_info (orig_addrs);
  }

/* We either created a new mapped symbol table, mapped an existing
   symbol table file which has not had initial symbol reading
   performed, or need to read an unmapped symbol table. */
if (from_tty || info_verbose)
  {
    if (deprecated_pre_add_symbol_hook)
deprecated_pre_add_symbol_hook (name);
    else
{
 printf_unfiltered ("Reading symbols from %s...", name);
 wrap_here ("");
 gdb_flush (gdb_stdout);
}
  }
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
   user requested that all symbols be read on initial access via either
   the gdb startup command line or on a per symbol file basis.  Expand
   all partial symbol tables for this objfile if so. */

if ((flags & OBJF_READNOW(1 << 4)) || readnow_symbol_files)
  {
    if (from_tty || info_verbose)
{
 printf_unfiltered ("expanding to full symbols...");
 wrap_here ("");
 gdb_flush (gdb_stdout);
}

    for (psymtab = objfile->psymtabs;
  psymtab != NULL((void*)0);
  psymtab = psymtab->next)
{
 psymtab_to_symtab (psymtab);
}
  }

debugfile = find_separate_debug_file (objfile);
if (debugfile)
  {
    if (addrs != NULL((void*)0))
{
 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((void*)0), 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_filtered ("(no debugging symbols found)");
    if (from_tty || info_verbose)
      printf_filtered ("...");
    else
      printf_filtered ("\n");
    wrap_here ("");
  }

if (from_tty || info_verbose)
  {
    if (deprecated_post_add_symbol_hook)
deprecated_post_add_symbol_hook ();
    else
{
 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((void*)0))
  return objfile;	/* No symbols. */

new_symfile_objfile (objfile, mainline, from_tty);

if (deprecated_target_new_objfile_hook)
  deprecated_target_new_objfile_hook (objfile);

bfd_cache_close_all ();
return (objfile);
926}


929/* Process the symbol file ABFD, as either the main file or as a
 dynamically loaded file.

 See symbol_file_add_with_addrs_or_offsets's comments for
 details.  */
934struct objfile *
935symbol_file_add_from_bfd (bfd *abfd, int from_tty,
                        struct section_addr_info *addrs,
                        int mainline, int flags)
938{
return symbol_file_add_with_addrs_or_offsets (abfd,
				from_tty, addrs, 0, 0,
                                              mainline, flags);
942}


945/* 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.  */
948struct objfile *
949symbol_file_add (char *name, int from_tty, struct section_addr_info *addrs,
 int mainline, int flags)
951{
return symbol_file_add_from_bfd (symfile_bfd_open (name), from_tty,
                                 addrs, mainline, flags);
954}


957/* 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
 and by some targets with special loading requirements.
 The auxiliary function, symbol_file_add_main_1(), has the flags
 argument for the switches that can only be specified in the symbol_file
 command itself.  */

965void
966symbol_file_add_main (char *args, int from_tty)
967{
symbol_file_add_main_1 (args, from_tty, 0);
969}

971static void
972symbol_file_add_main_1 (char *args, int from_tty, int flags)
973{
symbol_file_add (args, from_tty, NULL((void*)0), 1, flags);

/* Getting new symbols may change our opinion about
   what is frameless.  */
reinit_frame_cache ();

set_initial_language ();
981}

983void
984symbol_file_clear (int from_tty)
985{
if ((have_full_symbols () || have_partial_symbols ())
    && from_tty
    && !query ("Discard symbol table from `%s'? ",
 symfile_objfile->name))
  error ("Not confirmed.");
991#ifdef CLEAR_SOLIBclear_solib
    CLEAR_SOLIBclear_solib ();
993#endif

  free_all_objfiles ();

  /* solib descriptors may have handles to objfiles.  Since their
     storage has just been released, we'd better wipe the solib
     descriptors as well.
   */
1001#if defined(SOLIB_RESTART)
  SOLIB_RESTART ()(0);
1003#endif

  symfile_objfile = NULL((void*)0);
  if (from_tty)
    printf_unfiltered ("No symbol file now.\n");
1008}

1010static char *
1011get_debug_link_info (struct objfile *objfile, unsigned long *crc32_out)
1012{
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((void*)0))
  return NULL((void*)0);

debuglink_size = bfd_section_size (objfile->obfd, sect)((sect)->_raw_size);

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))((*((objfile->obfd)->xvec->bfd_getx32)) ((bfd_byte *
) (contents + crc_offset)));

*crc32_out = crc32;
return contents;
1039}

1041static int
1042separate_debug_file_exists (const char *name, unsigned long crc)
1043{
unsigned long file_crc = 0;
int fd;
char buffer[8*1024];
int count;

fd = open (name, O_RDONLY0x0000 | O_BINARY0);
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;
1059}

1061static char *debug_file_directory = NULL((void*)0);

1063#if ! defined (DEBUG_SUBDIRECTORY".debug")
1064#define DEBUG_SUBDIRECTORY".debug" ".debug"
1065#endif

1067static char *
1068find_separate_debug_file (struct objfile *objfile)
1069{
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((void*)0))
  return NULL((void*)0);

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])((dir[i]) == '/'))
break;
  }
gdb_assert (i >= 0 && IS_DIR_SEPARATOR (dir[i]))((void) ((i >= 0 && ((dir[i]) == '/')) ? 0 : (internal_error
 ("/usr/src/gnu/usr.bin/binutils/gdb/symfile.c", 1095, "%s: Assertion `%s' failed."
, __PRETTY_FUNCTION__, "i >= 0 && IS_DIR_SEPARATOR (dir[i])"
), 0)));
dir[i+1] = '\0';

debugfile = alloca (strlen (debug_file_directory) + 1__builtin_alloca(strlen (debug_file_directory) + 1 + strlen (
dir) + strlen (".debug") + strlen ("/") + strlen (basename) +
 1)
                    + strlen (dir)__builtin_alloca(strlen (debug_file_directory) + 1 + strlen (
dir) + strlen (".debug") + strlen ("/") + strlen (basename) +
 1)
                    + strlen (DEBUG_SUBDIRECTORY)__builtin_alloca(strlen (debug_file_directory) + 1 + strlen (
dir) + strlen (".debug") + strlen ("/") + strlen (basename) +
 1)
                    + strlen ("/")__builtin_alloca(strlen (debug_file_directory) + 1 + strlen (
dir) + strlen (".debug") + strlen ("/") + strlen (basename) +
 1)
                    + strlen (basename)__builtin_alloca(strlen (debug_file_directory) + 1 + strlen (
dir) + strlen (".debug") + strlen ("/") + strlen (basename) +
 1)
                    + 1)__builtin_alloca(strlen (debug_file_directory) + 1 + strlen (
dir) + strlen (".debug") + 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".debug");
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((void*)0);
1145}


1148/* 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
 quoting conventions which are undocumented and have little or
 nothing in common with the way things are quoted (or not quoted)
 elsewhere in GDB, (2) options are used, which are not generally
 used in GDB (perhaps "set mapped on", "set readnow on" would be
 better), (3) the order of options matters, which is contrary to GNU
 conventions (because it is confusing and inconvenient).  */
1157/* Note: ezannoni 2000-04-17. This function used to have support for
 rombug (see remote-os9k.c). It consisted of a call to target_link()
 (target.c) to get the address of the text segment from the target,
 and pass that to symbol_file_add(). This is no longer supported. */

1162void
1163symbol_file_command (char *args, int from_tty)
1164{
char **argv;
char *name = NULL((void*)0);
struct cleanup *cleanups;
int flags = OBJF_USERLOADED(1 << 5);

dont_repeat ();

if (args == NULL((void*)0))
  {
    symbol_file_clear (from_tty);
  }
else
  {
    if ((argv = buildargv (args)) == NULL((void*)0))
{
 nomem (0);
}
    cleanups = make_cleanup_freeargv (argv);
    while (*argv != NULL((void*)0))
{
 if (strcmp (*argv, "-readnow") == 0)
   flags |= OBJF_READNOW(1 << 4);
 else if (**argv == '-')
   error ("unknown option `%s'", *argv);
 else
   {
     name = *argv;

     symbol_file_add_main_1 (name, from_tty, flags);
   }
 argv++;
}

    if (name == NULL((void*)0))
{
 error ("no symbol file name was specified");
}
    do_cleanups (cleanups);
  }
1204}

1206/* Set the initial language.

 A better solution would be to record the language in the psymtab when reading
 partial symbols, and then use it (if known) to set the language.  This would
 be a win for formats that encode the language in an easily discoverable place,
 such as DWARF.  For stabs, we can jump through hoops looking for specially
 named symbols or try to intuit the language from the specific type of stabs
 we find, but we can't do that until later when we read in full symbols.
 FIXME.  */

1216static void
1217set_initial_language (void)
1218{
struct partial_symtab *pst;
enum language lang = language_unknown;

pst = find_main_psymtab ();
if (pst != NULL((void*)0))
  {
    if (pst->filename != NULL((void*)0))
{
 lang = deduce_language_from_filename (pst->filename);
}
    if (lang == language_unknown)
{
 /* Make C the default language */
 lang = language_c;
}
    set_language (lang);
    expected_language = current_language;	/* Don't warn the user */
  }
1237}

1239/* Open file specified by NAME and hand it off to BFD for preliminary
 analysis.  Result is a newly initialized bfd *, which includes a newly
 malloc'd` copy of NAME (tilde-expanded and made absolute).
 In case of trouble, error() is called.  */

1244bfd *
1245symfile_bfd_open (char *name)
1246{
bfd *sym_bfd;
int desc;
char *absolute_name;



name = tilde_expand (name);	/* Returns 1st new malloc'd copy */

/* Look down path for it, allocate 2nd new malloc'd copy.  */
desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST0x01, name, O_RDONLY0x0000 | O_BINARY0,
0, &absolute_name);
1258#if defined(__GO32__) || defined(_WIN32) || defined (__CYGWIN__)
if (desc < 0)
  {
    char *exename = alloca (strlen (name) + 5)__builtin_alloca(strlen (name) + 5);
    strcat (strcpy (exename, name), ".exe");
    desc = openp (getenv ("PATH"), OPF_TRY_CWD_FIRST0x01, exename,
    O_RDONLY0x0000 | O_BINARY0, 0, &absolute_name);
  }
1266#endif
if (desc < 0)
  {
    make_cleanup (xfree, name);
    perror_with_name (name);
  }
xfree (name);			/* Free 1st new malloc'd copy */
name = absolute_name;		/* Keep 2nd malloc'd copy in bfd */
/* It'll be freed in free_objfile(). */

sym_bfd = bfd_fdopenr (name, gnutarget, desc);
if (!sym_bfd)
  {
    close (desc);
    make_cleanup (xfree, name);
    error ("\"%s\": can't open to read symbols: %s.", name,
    bfd_errmsg (bfd_get_error ()));
  }
bfd_set_cacheable (sym_bfd, 1)(((sym_bfd)->cacheable = 1), 1);

if (!bfd_check_format (sym_bfd, bfd_object))
  {
    /* FIXME: should be checking for errors from bfd_close (for one thing,
       on error it does not free all the storage associated with the
       bfd).  */
    bfd_close (sym_bfd);	/* This also closes desc */
    make_cleanup (xfree, name);
    error ("\"%s\": can't read symbols: %s.", name,
    bfd_errmsg (bfd_get_error ()));
  }
return (sym_bfd);
1297}

1299/* Return the section index for the given section name. Return -1 if
 the section was not found. */
1301int
1302get_section_index (struct objfile *objfile, char *section_name)
1303{
asection *sect = bfd_get_section_by_name (objfile->obfd, section_name);
if (sect)
  return sect->index;
else
  return -1;
1309}

1311/* Link a new symtab_fns into the global symtab_fns list.  Called on gdb
 startup by the _initialize routine in each object file format reader,
 to register information about each format the the reader is prepared
 to handle. */

1316void
1317add_symtab_fns (struct sym_fns *sf)
1318{
sf->next = symtab_fns;
symtab_fns = sf;
1321}


1324/* Initialize to read symbols from the symbol file sym_bfd.  It either
 returns or calls error().  The result is an initialized struct sym_fns
 in the objfile structure, that contains cached information about the
 symbol file.  */

1329static void
1330find_sym_fns (struct objfile *objfile)
1331{
struct sym_fns *sf;
enum bfd_flavour our_flavour = bfd_get_flavour (objfile->obfd)((objfile->obfd)->xvec->flavour);
char *our_target = bfd_get_target (objfile->obfd)((objfile->obfd)->xvec->name);

if (our_flavour == bfd_target_srec_flavour
    || our_flavour == bfd_target_ihex_flavour
    || our_flavour == bfd_target_tekhex_flavour)
  return;	/* No symbols. */

for (sf = symtab_fns; sf != NULL((void*)0); sf = sf->next)
  {
    if (our_flavour == sf->sym_flavour)
{
 objfile->sf = sf;
 return;
}
  }
error ("I'm sorry, Dave, I can't do that.  Symbol format `%s' unknown.",
bfd_get_target (objfile->obfd)((objfile->obfd)->xvec->name));
1351}
1352
1353/* This function runs the load command of our current target.  */

1355static void
1356load_command (char *arg, int from_tty)
1357{
if (arg == NULL((void*)0))
  arg = get_exec_file (1);
target_load (arg, from_tty);

/* After re-loading the executable, we don't really know which
   overlays are mapped any more.  */
overlay_cache_invalid = 1;
1365}

1367/* This version of "load" should be usable for any target.  Currently
 it is just used for remote targets, not inftarg.c or core files,
 on the theory that only in that case is it useful.

 Avoiding xmodem and the like seems like a win (a) because we don't have
 to worry about finding it, and (b) On VMS, fork() is very slow and so
 we don't want to run a subprocess.  On the other hand, I'm not sure how
 performance compares.  */

1376static int download_write_size = 512;
1377static int validate_download = 0;

1379/* Callback service function for generic_load (bfd_map_over_sections).  */

1381static void
1382add_section_size_callback (bfd *abfd, asection *asec, void *data)
1383{
bfd_size_type *sum = data;

*sum += bfd_get_section_size (asec)((asec)->_raw_size);
1387}

1389/* Opaque data for load_section_callback.  */
1390struct load_section_data {
unsigned long load_offset;
unsigned long write_count;
unsigned long data_count;
bfd_size_type total_size;
1395};

1397/* Callback service function for generic_load (bfd_map_over_sections).  */

1399static void
1400load_section_callback (bfd *abfd, asection *asec, void *data)
1401{
struct load_section_data *args = data;

if (bfd_get_section_flags (abfd, asec)((asec)->flags + 0) & SEC_LOAD0x002)
  {
    bfd_size_type size = bfd_get_section_size (asec)((asec)->_raw_size);
    if (size > 0)
{
 char *buffer;
 struct cleanup *old_chain;
 CORE_ADDR lma = bfd_section_lma (abfd, asec)((asec)->lma) + args->load_offset;
 bfd_size_type block_size;
 int err;
 const char *sect_name = bfd_get_section_name (abfd, asec)((asec)->name + 0);
 bfd_size_type sent;

 if (download_write_size > 0 && size > download_write_size)
   block_size = download_write_size;
 else
   block_size = size;

 buffer = xmalloc (size);
 old_chain = make_cleanup (xfree, buffer);

 /* Is this really necessary?  I guess it gives the user something
    to look at during a long download.  */
 ui_out_message (uiout, 0, "Loading section %s, size 0x%s lma 0x%s\n",
	  sect_name, paddr_nz (size), paddr_nz (lma));

 bfd_get_section_contents (abfd, asec, buffer, 0, size);

 sent = 0;
 do
   {
     int len;
     bfd_size_type this_transfer = size - sent;

     if (this_transfer >= block_size)
this_transfer = block_size;
     len = target_write_memory_partial (lma, buffer,
				 this_transfer, &err);
     if (err)
break;
     if (validate_download)
{
  /* Broken memories and broken monitors manifest
     themselves here when bring new computers to
     life.  This doubles already slow downloads.  */
  /* NOTE: cagney/1999-10-18: A more efficient
     implementation might add a verify_memory()
     method to the target vector and then use
     that.  remote.c could implement that method
     using the ``qCRC'' packet.  */
  char *check = xmalloc (len);
  struct cleanup *verify_cleanups =
    make_cleanup (xfree, check);

  if (target_read_memory (lma, check, len) != 0)
    error ("Download verify read failed at 0x%s",
	   paddr (lma));
  if (memcmp (buffer, check, len) != 0)
    error ("Download verify compare failed at 0x%s",
	   paddr (lma));
  do_cleanups (verify_cleanups);
}
     args->data_count += len;
     lma += len;
     buffer += len;
     args->write_count += 1;
     sent += len;
     if (quit_flag
  || (deprecated_ui_load_progress_hook != NULL((void*)0)
      && deprecated_ui_load_progress_hook (sect_name, sent)))
error ("Canceled the download");

     if (deprecated_show_load_progress != NULL((void*)0))
deprecated_show_load_progress (sect_name, sent, size,
			       args->data_count,
			       args->total_size);
   }
 while (sent < size);

 if (err != 0)
   error ("Memory access error while loading section %s.", sect_name);

 do_cleanups (old_chain);
}
  }
1489}

1491void
1492generic_load (char *args, int from_tty)
1493{
asection *s;
bfd *loadfile_bfd;
time_t start_time, end_time;	/* Start and end times of download */
char *filename;
struct cleanup *old_cleanups;
char *offptr;
struct load_section_data cbdata;
CORE_ADDR entry;

cbdata.load_offset = 0;	/* Offset to add to vma for each section. */
cbdata.write_count = 0;	/* Number of writes needed. */
cbdata.data_count = 0;	/* Number of bytes written to target memory. */
cbdata.total_size = 0;	/* Total size of all bfd sectors. */

/* Parse the input argument - the user can specify a load offset as
   a second argument. */
filename = xmalloc (strlen (args) + 1);
old_cleanups = make_cleanup (xfree, filename);
strcpy (filename, args);
offptr = strchr (filename, ' ');
if (offptr != NULL((void*)0))
  {
    char *endptr;

    cbdata.load_offset = strtoul (offptr, &endptr, 0);
    if (offptr == endptr)
error ("Invalid download offset:%s\n", offptr);
    *offptr = '\0';
  }
else
  cbdata.load_offset = 0;

/* Open the file for loading. */
loadfile_bfd = bfd_openr (filename, gnutarget);
if (loadfile_bfd == NULL((void*)0))
  {
    perror_with_name (filename);
    return;
  }

/* FIXME: should be checking for errors from bfd_close (for one thing,
   on error it does not free all the storage associated with the
   bfd).  */
make_cleanup_bfd_close (loadfile_bfd);

if (!bfd_check_format (loadfile_bfd, bfd_object))
  {
    error ("\"%s\" is not an object file: %s", filename,
    bfd_errmsg (bfd_get_error ()));
  }

bfd_map_over_sections (loadfile_bfd, add_section_size_callback,
	 (void *) &cbdata.total_size);

start_time = time (NULL((void*)0));

bfd_map_over_sections (loadfile_bfd, load_section_callback, &cbdata);

end_time = time (NULL((void*)0));

entry = bfd_get_start_address (loadfile_bfd)((loadfile_bfd)->start_address);
ui_out_text (uiout, "Start address ");
ui_out_field_fmt (uiout, "address", "0x%s", paddr_nz (entry));
ui_out_text (uiout, ", load size ");
ui_out_field_fmt (uiout, "load-size", "%lu", cbdata.data_count);
ui_out_text (uiout, "\n");
/* We were doing this in remote-mips.c, I suspect it is right
   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.  Some targets do (e.g., remote-vx.c) but
   others don't (or didn't - perhaps they have all been deleted).  */

print_transfer_performance (gdb_stdout, cbdata.data_count,
	      cbdata.write_count, end_time - start_time);

do_cleanups (old_cleanups);
1574}

1576/* Report how fast the transfer went. */

1578/* DEPRECATED: cagney/1999-10-18: report_transfer_performance is being
 replaced by print_transfer_performance (with a very different
 function signature). */

1582void
1583report_transfer_performance (unsigned long data_count, time_t start_time,
	     time_t end_time)
1585{
print_transfer_performance (gdb_stdout, data_count,
	      end_time - start_time, 0);
1588}

1590void
1591print_transfer_performance (struct ui_file *stream,
	    unsigned long data_count,
	    unsigned long write_count,
	    unsigned long time_count)
1595{
ui_out_text (uiout, "Transfer rate: ");
if (time_count > 0)
  {
    ui_out_field_fmt (uiout, "transfer-rate", "%lu",
	(data_count * 8) / time_count);
    ui_out_text (uiout, " bits/sec");
  }
else
  {
    ui_out_field_fmt (uiout, "transferred-bits", "%lu", (data_count * 8));
    ui_out_text (uiout, " bits in <1 sec");
  }
if (write_count > 0)
  {
    ui_out_text (uiout, ", ");
    ui_out_field_fmt (uiout, "write-rate", "%lu", data_count / write_count);
    ui_out_text (uiout, " bytes/write");
  }
ui_out_text (uiout, ".\n");
1615}

1617/* This function allows the addition of incrementally linked object files.
 It does not modify any state in the target, only in the debugger.  */
1619/* Note: ezannoni 2000-04-13 This function/command used to have a
 special case syntax for the rombug target (Rombug is the boot
 monitor for Microware's OS-9 / OS-9000, see remote-os9k.c). In the
 rombug case, the user doesn't need to supply a text address,
 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. */

1626static void
1627add_symbol_file_command (char *args, int from_tty)
1628{
char *filename = NULL((void*)0);
int flags = OBJF_USERLOADED(1 << 5);
char *arg;
int expecting_option = 0;
int section_index = 0;
int argcnt = 0;
int sec_num = 0;
int i;
int expecting_sec_name = 0;
int expecting_sec_addr = 0;

struct sect_opt
{
  char *name;
  char *value;
};

struct section_addr_info *section_addrs;
struct sect_opt *sect_opts = NULL((void*)0);
size_t num_sect_opts = 0;
struct cleanup *my_cleanups = make_cleanup (null_cleanup, NULL((void*)0));

num_sect_opts = 16;
sect_opts = (struct sect_opt *) xmalloc (num_sect_opts
			   * sizeof (struct sect_opt));

dont_repeat ();

if (args == NULL((void*)0))
  error ("add-symbol-file takes a file name and an address");

/* Make a copy of the string that we can safely write into. */
args = xstrdup (args);

while (*args != '\000')
  {
    /* Any leading spaces? */
    while (isspace (*args))
args++;

    /* Point arg to the beginning of the argument. */
    arg = args;

    /* Move args pointer over the argument. */
    while ((*args != '\000') && !isspace (*args))
args++;

    /* If there are more arguments, terminate arg and
       proceed past it. */
    if (*args != '\000')
*args++ = '\000';

    /* Now process the argument. */
    if (argcnt == 0)
{
 /* The first argument is the file name. */
 filename = tilde_expand (arg);
 make_cleanup (xfree, filename);
}
    else
if (argcnt == 1)
 {
   /* The second argument is always the text address at which
             to load the program. */
   sect_opts[section_index].name = ".text";
   sect_opts[section_index].value = arg;
   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
 {
   /* It's an option (starting with '-') or it's an argument
      to an option */

   if (*arg == '-')
     {
if (strcmp (arg, "-readnow") == 0)
  flags |= OBJF_READNOW(1 << 4);
else if (strcmp (arg, "-s") == 0)
  {
    expecting_sec_name = 1;
    expecting_sec_addr = 1;
  }
     }
   else
     {
if (expecting_sec_name)
  {
    sect_opts[section_index].name = arg;
    expecting_sec_name = 0;
  }
else
  if (expecting_sec_addr)
    {
      sect_opts[section_index].value = arg;
      expecting_sec_addr = 0;
      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>]*");
     }
 }
    argcnt++;
  }

/* Print the prompt for the query below. And save the arguments into
   a sect_addr_info structure to be passed around to other
   functions.  We have to split this up into separate print
   statements because hex_string returns a local static
   string. */

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;

    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_unfiltered ("\t%s_addr = %s\n",
       sec, hex_string ((unsigned long)addr));
    sec_num++;

    /* The object's sections are initialized when a
call is made to build_objfile_section_table (objfile).
This happens in reread_symbols.
At this point, we don't know what file type this is,
so we can't determine what section names are valid.  */
  }

if (from_tty && (!query ("%s", "")))
  error ("Not confirmed.");

symbol_file_add (filename, from_tty, section_addrs, 0, flags);

/* Getting new symbols may change our opinion about what is
   frameless.  */
reinit_frame_cache ();
do_cleanups (my_cleanups);
1788}
1789
1790static void
1791add_shared_symbol_files_command (char *args, int from_tty)
1792{
1793#ifdef ADD_SHARED_SYMBOL_FILES
ADD_SHARED_SYMBOL_FILES (args, from_tty);
1795#else
error ("This command is not available in this configuration of GDB.");
1797#endif
1798}
1799
1800/* Re-read symbols if a symbol-file has changed.  */
1801void
1802reread_symbols (void)
1803{
struct objfile *objfile;
time_t new_modtime;
int reread_one = 0;
struct stat new_statbuf;
int res;

/* With the addition of shared libraries, this should be modified,
   the load time should be saved in the partial symbol tables, since
   different tables may come from different source files.  FIXME.
   This routine should then walk down each partial symbol table
   and see if the symbol table that it originates from has been changed */

for (objfile = object_files; objfile; objfile = objfile->next)
  {
    if (objfile->obfd)
{
1820#ifdef DEPRECATED_IBM6000_TARGET
 /* If this object is from a shared library, then you should
    stat on the library name, not member name. */

 if (objfile->obfd->my_archive)
   res = stat (objfile->obfd->my_archive->filename, &new_statbuf);
 else
1827#endif
   res = stat (objfile->name, &new_statbuf);
 if (res != 0)
   {
     /* FIXME, should use print_sys_errmsg but it's not filtered. */
     printf_unfiltered ("`%s' has disappeared; keeping its symbols.\n",
	       objfile->name);
     continue;
   }
 new_modtime = new_statbuf.st_mtimest_mtim.tv_sec;
 if (new_modtime != objfile->mtime)
   {
     struct cleanup *old_cleanups;
     struct section_offsets *offsets;
     int num_offsets;
     char *obfd_filename;

     printf_unfiltered ("`%s' has changed; re-reading symbols.\n",
	       objfile->name);

     /* There are various functions like symbol_file_add,
        symfile_bfd_open, syms_from_objfile, etc., which might
        appear to do what we want.  But they have various other
        effects which we *don't* want.  So we just do stuff
        ourselves.  We don't worry about mapped files (for one thing,
        any mapped file will be out of date).  */

     /* If we get an error, blow away this objfile (not sure if
        that is the correct response for things like shared
        libraries).  */
     old_cleanups = make_cleanup_free_objfile (objfile);
     /* We need to do this whenever any symbols go away.  */
     make_cleanup (clear_symtab_users_cleanup, 0 /*ignore*/);

     /* Clean up any state BFD has sitting around.  We don't need
        to close the descriptor but BFD lacks a way of closing the
        BFD without closing the descriptor.  */
     obfd_filename = bfd_get_filename (objfile->obfd)((char *) (objfile->obfd)->filename);
     if (!bfd_close (objfile->obfd))
error ("Can't close BFD for %s: %s", objfile->name,
       bfd_errmsg (bfd_get_error ()));
     objfile->obfd = bfd_openr (obfd_filename, gnutarget);
     if (objfile->obfd == NULL((void*)0))
error ("Can't open %s to read symbols.", objfile->name);
     /* bfd_openr sets cacheable to true, which is what we want.  */
     if (!bfd_check_format (objfile->obfd, bfd_object))
error ("Can't read symbols from %s: %s.", objfile->name,
       bfd_errmsg (bfd_get_error ()));

     /* Save the offsets, we will nuke them with the rest of the
        objfile_obstack.  */
     num_offsets = objfile->num_sections;
     offsets = ((struct section_offsets *)
	 alloca (SIZEOF_N_SECTION_OFFSETS (num_offsets))__builtin_alloca((sizeof (struct section_offsets) + sizeof ((
(struct section_offsets *) 0)->offsets) * ((num_offsets)-1
))));
     memcpy (offsets, objfile->section_offsets,
      SIZEOF_N_SECTION_OFFSETS (num_offsets)(sizeof (struct section_offsets) + sizeof (((struct section_offsets
 *) 0)->offsets) * ((num_offsets)-1)));

     /* Nuke all the state that we will re-read.  Much of the following
        code which sets things to NULL really is necessary to tell
        other parts of GDB that there is nothing currently there.  */

     /* FIXME: Do we have to free a whole linked list, or is this
        enough?  */
     if (objfile->global_psymbols.list)
xfree (objfile->global_psymbols.list);
     memset (&objfile->global_psymbols, 0,
      sizeof (objfile->global_psymbols));
     if (objfile->static_psymbols.list)
xfree (objfile->static_psymbols.list);
     memset (&objfile->static_psymbols, 0,
      sizeof (objfile->static_psymbols));

     /* Free the obstacks for non-reusable objfiles */
     bcache_xfree (objfile->psymbol_cache);
     objfile->psymbol_cache = bcache_xmalloc ();
     bcache_xfree (objfile->macro_cache);
     objfile->macro_cache = bcache_xmalloc ();
     if (objfile->demangled_names_hash != NULL((void*)0))
{
  htab_delete (objfile->demangled_names_hash);
  objfile->demangled_names_hash = NULL((void*)0);
}
     obstack_free (&objfile->objfile_obstack, 0)__extension__ ({ struct obstack *__o = (&objfile->objfile_obstack
); void *__obj = (0); if (__obj > (void *)__o->chunk &&
 __obj < (void *)__o->chunk_limit) __o->next_free = __o
->object_base = __obj; else (obstack_free) (__o, __obj); }
);
     objfile->sections = NULL((void*)0);
     objfile->symtabs = NULL((void*)0);
     objfile->psymtabs = NULL((void*)0);
     objfile->free_psymtabs = NULL((void*)0);
     objfile->cp_namespace_symtab = NULL((void*)0);
     objfile->msymbols = NULL((void*)0);
     objfile->sym_private = NULL((void*)0);
     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((void*)0);
     clear_objfile_data (objfile);
     if (objfile->sf != NULL((void*)0))
{
  (*objfile->sf->sym_finish) (objfile);
}

     /* We never make this a mapped file.  */
     objfile->md = NULL((void*)0);
     objfile->psymbol_cache = bcache_xmalloc ();
     objfile->macro_cache = bcache_xmalloc ();
     /* obstack_init also initializes the obstack so it is
        empty.  We could use obstack_specify_allocation but
        gdb_obstack.h specifies the alloc/dealloc
        functions.  */
     obstack_init (&objfile->objfile_obstack)_obstack_begin ((&objfile->objfile_obstack), 0, 0, (void
 *(*) (long)) xmalloc, (void (*) (void *)) xfree);
     if (build_objfile_section_table (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->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack
); __extension__ ({ struct obstack *__o = (__h); int __len = (
((sizeof (struct section_offsets) + sizeof (((struct section_offsets
 *) 0)->offsets) * ((num_offsets)-1)))); if (__o->chunk_limit
 - __o->next_free < __len) _obstack_newchunk (__o, __len
); ((__o)->next_free += (__len)); (void) 0; }); __extension__
 ({ struct obstack *__o1 = (__h); void *value; value = (void *
) __o1->object_base; if (__o1->next_free == value) __o1
->maybe_empty_object = 1; __o1->next_free = (((((__o1->
next_free) - (char *) 0)+__o1->alignment_mask) & ~ (__o1
->alignment_mask)) + (char *) 0); if (__o1->next_free -
 (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1
->chunk) __o1->next_free = __o1->chunk_limit; __o1->
object_base = __o1->next_free; value; }); })
	       SIZEOF_N_SECTION_OFFSETS (num_offsets))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack
); __extension__ ({ struct obstack *__o = (__h); int __len = (
((sizeof (struct section_offsets) + sizeof (((struct section_offsets
 *) 0)->offsets) * ((num_offsets)-1)))); if (__o->chunk_limit
 - __o->next_free < __len) _obstack_newchunk (__o, __len
); ((__o)->next_free += (__len)); (void) 0; }); __extension__
 ({ struct obstack *__o1 = (__h); void *value; value = (void *
) __o1->object_base; if (__o1->next_free == value) __o1
->maybe_empty_object = 1; __o1->next_free = (((((__o1->
next_free) - (char *) 0)+__o1->alignment_mask) & ~ (__o1
->alignment_mask)) + (char *) 0); if (__o1->next_free -
 (char *)__o1->chunk > __o1->chunk_limit - (char *)__o1
->chunk) __o1->next_free = __o1->chunk_limit; __o1->
object_base = __o1->next_free; value; }); });
     memcpy (objfile->section_offsets, offsets,
      SIZEOF_N_SECTION_OFFSETS (num_offsets)(sizeof (struct section_offsets) + sizeof (((struct section_offsets
 *) 0)->offsets) * ((num_offsets)-1)));
     objfile->num_sections = num_offsets;

     /* What the hell is sym_new_init for, anyway?  The concept of
        distinguishing between the main file and additional files
        in this way seems rather dubious.  */
     if (objfile == symfile_objfile)
{
  (*objfile->sf->sym_new_init) (objfile);
}

     (*objfile->sf->sym_init) (objfile);
     clear_complaints (&symfile_complaints, 1, 1);
     /* The "mainline" parameter is a hideous hack; I think leaving it
        zero is OK since dbxread.c also does what it needs to do if
        objfile->global_psymbols.size is 0.  */
     (*objfile->sf->sym_read) (objfile, 0);
     if (!have_partial_symbols () && !have_full_symbols ())
{
  wrap_here ("");
  printf_unfiltered ("(no debugging symbols found)\n");
  wrap_here ("");
}
     objfile->flags |= OBJF_SYMS(1 << 1);

     /* We're done reading the symbol file; finish off complaints.  */
     clear_complaints (&symfile_complaints, 0, 1);

     /* Getting new symbols may change our opinion about what is
        frameless.  */

     reinit_frame_cache ();

     /* Discard cleanups as symbol reading was successful.  */
     discard_cleanups (old_cleanups);

     init_entry_point_info (objfile);

     /* If the mtime has changed between the time we set new_modtime
        and now, we *want* this to be out of date, so don't call stat
        again now.  */
     objfile->mtime = new_modtime;
     reread_one = 1;
            reread_separate_symbols (objfile);
   }
}
  }

if (reread_one)
  clear_symtab_users ();
2001}


2004/* 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.  */
2016static void
2017reread_separate_symbols (struct objfile *objfile)
2018{
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
         (symfile_bfd_open (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_REORDERED(1 << 2) | OBJF_SHARED(1 << 3) | OBJF_READNOW(1 << 4)
                            | OBJF_USERLOADED(1 << 5))));
    objfile->separate_debug_objfile->separate_debug_objfile_backlink
      = objfile;
  }
2065}


2068


2071typedef struct
2072{
char *ext;
enum language lang;
2075}
2076filename_language;

2078static filename_language *filename_language_table;
2079static int fl_table_size, fl_table_next;

2081static void
2082add_filename_language (char *ext, enum language lang)
2083{
if (fl_table_next >= fl_table_size)
  {
    fl_table_size += 10;
    filename_language_table =
xrealloc (filename_language_table,
  fl_table_size * sizeof (*filename_language_table));
  }

filename_language_table[fl_table_next].ext = xstrdup (ext);
filename_language_table[fl_table_next].lang = lang;
fl_table_next++;
2095}

2097static char *ext_args;

2099static void
2100set_ext_lang_command (char *args, int from_tty)
2101{
int i;
char *cp = ext_args;
enum language lang;

/* First arg is filename extension, starting with '.' */
if (*cp != '.')
  error ("'%s': Filename extension must begin with '.'", ext_args);

/* Find end of first arg.  */
while (*cp && !isspace (*cp))
  cp++;

if (*cp == '\0')
  error ("'%s': two arguments required -- filename extension and language",
  ext_args);

/* Null-terminate first arg */
*cp++ = '\0';

/* Find beginning of second arg, which should be a source language.  */
while (*cp && isspace (*cp))
  cp++;

if (*cp == '\0')
  error ("'%s': two arguments required -- filename extension and language",
  ext_args);

/* Lookup the language from among those we know.  */
lang = language_enum (cp);

/* Now lookup the filename extension: do we already know it?  */
for (i = 0; i < fl_table_next; i++)
  if (0 == strcmp (ext_args, filename_language_table[i].ext))
    break;

if (i >= fl_table_next)
  {
    /* new file extension */
    add_filename_language (ext_args, lang);
  }
else
  {
    /* redefining a previously known filename extension */

    /* if (from_tty) */
    /*   query ("Really make files of type %s '%s'?", */
    /*          ext_args, language_str (lang));           */

    xfree (filename_language_table[i].ext);
    filename_language_table[i].ext = xstrdup (ext_args);
    filename_language_table[i].lang = lang;
  }
2154}

2156static void
2157info_ext_lang_command (char *args, int from_tty)
2158{
int i;

printf_filtered ("Filename extensions and the languages they represent:");
printf_filtered ("\n\n");
for (i = 0; i < fl_table_next; i++)
  printf_filtered ("\t%s\t- %s\n",
     filename_language_table[i].ext,
     language_str (filename_language_table[i].lang));
2167}

2169static void
2170init_filename_language_table (void)
2171{
if (fl_table_size == 0)	/* protect against repetition */
  {
    fl_table_size = 20;
    fl_table_next = 0;
    filename_language_table =
xmalloc (fl_table_size * sizeof (*filename_language_table));
    add_filename_language (".c", language_c);
    add_filename_language (".C", language_cplus);
    add_filename_language (".cc", language_cplus);
    add_filename_language (".cp", language_cplus);
    add_filename_language (".cpp", language_cplus);
    add_filename_language (".cxx", language_cplus);
    add_filename_language (".c++", language_cplus);
    add_filename_language (".java", language_java);
    add_filename_language (".class", language_java);
    add_filename_language (".m", language_objc);
    add_filename_language (".f", language_fortran);
    add_filename_language (".F", language_fortran);
    add_filename_language (".s", language_asm);
    add_filename_language (".S", language_asm);
    add_filename_language (".pas", language_pascal);
    add_filename_language (".p", language_pascal);
    add_filename_language (".pp", language_pascal);
    add_filename_language (".adb", language_ada);
    add_filename_language (".ads", language_ada);
    add_filename_language (".a", language_ada);
    add_filename_language (".ada", language_ada);
  }
2200}

2202enum language
2203deduce_language_from_filename (char *filename)
2204{
int i;
char *cp;

if (filename != NULL((void*)0))
  if ((cp = strrchr (filename, '.')) != NULL((void*)0))
    for (i = 0; i < fl_table_next; i++)
if (strcmp (cp, filename_language_table[i].ext) == 0)
 return filename_language_table[i].lang;

return language_unknown;
2215}
2216
2217/* allocate_symtab:

 Allocate and partly initialize a new symbol table.  Return a pointer
 to it.  error() if no space.

 Caller must set these fields:
 LINETABLE(symtab)
 symtab->blockvector
 symtab->dirname
 symtab->free_code
 symtab->free_ptr
 possibly free_named_symtabs (symtab->filename);
*/

2231struct symtab *
2232allocate_symtab (char *filename, struct objfile *objfile)
2233{
struct symtab *symtab;

symtab = (struct symtab *)
  obstack_alloc (&objfile->objfile_obstack, sizeof (struct symtab))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack
); __extension__ ({ struct obstack *__o = (__h); int __len = (
(sizeof (struct symtab))); if (__o->chunk_limit - __o->
next_free < __len) _obstack_newchunk (__o, __len); ((__o)->
next_free += (__len)); (void) 0; }); __extension__ ({ struct obstack
 *__o1 = (__h); void *value; value = (void *) __o1->object_base
; if (__o1->next_free == value) __o1->maybe_empty_object
 = 1; __o1->next_free = (((((__o1->next_free) - (char *
) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask
)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk
 > __o1->chunk_limit - (char *)__o1->chunk) __o1->
next_free = __o1->chunk_limit; __o1->object_base = __o1
->next_free; value; }); });
memset (symtab, 0, sizeof (*symtab));
symtab->filename = obsavestring (filename, strlen (filename),
		   &objfile->objfile_obstack);
symtab->fullname = NULL((void*)0);
symtab->language = deduce_language_from_filename (filename);
symtab->debugformat = obsavestring ("unknown", 7,
		      &objfile->objfile_obstack);

/* Hook it to the objfile it comes from */

symtab->objfile = objfile;
symtab->next = objfile->symtabs;
objfile->symtabs = symtab;

/* FIXME: This should go away.  It is only defined for the Z8000,
   and the Z8000 definition of this macro doesn't have anything to
   do with the now-nonexistent EXTRA_SYMTAB_INFO macro, it's just
   here for convenience.  */
2256#ifdef INIT_EXTRA_SYMTAB_INFO
INIT_EXTRA_SYMTAB_INFO (symtab);
2258#endif

return (symtab);
2261}

2263struct partial_symtab *
2264allocate_psymtab (char *filename, struct objfile *objfile)
2265{
struct partial_symtab *psymtab;

if (objfile->free_psymtabs)
2
←
Assuming field 'free_psymtabs' is null→
3
←
Taking false branch→
  {
    psymtab = objfile->free_psymtabs;
    objfile->free_psymtabs = psymtab->next;
  }
else
  psymtab = (struct partial_symtab *)
    obstack_alloc (&objfile->objfile_obstack,__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack
); __extension__ ({ struct obstack *__o = (__h); int __len = (
(sizeof (struct partial_symtab))); if (__o->chunk_limit - __o
->next_free < __len) _obstack_newchunk (__o, __len); ((
__o)->next_free += (__len)); (void) 0; }); __extension__ (
{ struct obstack *__o1 = (__h); void *value; value = (void *)
 __o1->object_base; if (__o1->next_free == value) __o1->
maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free
) - (char *) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask
)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk
 > __o1->chunk_limit - (char *)__o1->chunk) __o1->
next_free = __o1->chunk_limit; __o1->object_base = __o1
->next_free; value; }); })
4
←
Assuming the condition is false→
5
←
Taking false branch→
6
←
Assuming 'value' is not equal to field 'next_free'→
7
←
Taking false branch→
8
←
Assuming the condition is false→
9
←
Taking false branch→
     sizeof (struct partial_symtab))__extension__ ({ struct obstack *__h = (&objfile->objfile_obstack
); __extension__ ({ struct obstack *__o = (__h); int __len = (
(sizeof (struct partial_symtab))); if (__o->chunk_limit - __o
->next_free < __len) _obstack_newchunk (__o, __len); ((
__o)->next_free += (__len)); (void) 0; }); __extension__ (
{ struct obstack *__o1 = (__h); void *value; value = (void *)
 __o1->object_base; if (__o1->next_free == value) __o1->
maybe_empty_object = 1; __o1->next_free = (((((__o1->next_free
) - (char *) 0)+__o1->alignment_mask) & ~ (__o1->alignment_mask
)) + (char *) 0); if (__o1->next_free - (char *)__o1->chunk
 > __o1->chunk_limit - (char *)__o1->chunk) __o1->
next_free = __o1->chunk_limit; __o1->object_base = __o1
->next_free; value; }); });

memset (psymtab, 0, sizeof (struct partial_symtab));
psymtab->filename = obsavestring (filename, strlen (filename),
10
←
Calling 'obsavestring'→
		    &objfile->objfile_obstack);
psymtab->symtab = NULL((void*)0);

/* Prepend it to the psymtab list for the objfile it belongs to.
   Psymtabs are searched in most recent inserted -> least recent
   inserted order. */

psymtab->objfile = objfile;
psymtab->next = objfile->psymtabs;
objfile->psymtabs = psymtab;
2290#if 0
{
  struct partial_symtab **prev_pst;
  psymtab->objfile = objfile;
  psymtab->next = NULL((void*)0);
  prev_pst = &(objfile->psymtabs);
  while ((*prev_pst) != NULL((void*)0))
    prev_pst = &((*prev_pst)->next);
  (*prev_pst) = psymtab;
}
2300#endif

return (psymtab);
2303}

2305void
2306discard_psymtab (struct partial_symtab *pst)
2307{
struct partial_symtab **prev_pst;

/* From dbxread.c:
   Empty psymtabs happen as a result of header files which don't
   have any symbols in them.  There can be a lot of them.  But this
   check is wrong, in that a psymtab with N_SLINE entries but
   nothing else is not empty, but we don't realize that.  Fixing
   that without slowing things down might be tricky.  */

/* First, snip it out of the psymtab chain */

prev_pst = &(pst->objfile->psymtabs);
while ((*prev_pst) != pst)
  prev_pst = &((*prev_pst)->next);
(*prev_pst) = pst->next;

/* Next, put it on a free list for recycling */

pst->next = pst->objfile->free_psymtabs;
pst->objfile->free_psymtabs = pst;
2328}
2329

2331/* Reset all data structures in gdb which may contain references to symbol
 table data.  */

2334void
2335clear_symtab_users (void)
2336{
/* Someday, we should do better than this, by only blowing away
   the things that really need to be blown.  */
clear_value_history ();
clear_displays ();
clear_internalvars ();
breakpoint_re_set ();
set_default_breakpoint (0, 0, 0, 0);
clear_current_source_symtab_and_line ();
clear_pc_function_cache ();
if (deprecated_target_new_objfile_hook)
  deprecated_target_new_objfile_hook (NULL((void*)0));
varobj_refresh ();
2349}

2351static void
2352clear_symtab_users_cleanup (void *ignore)
2353{
clear_symtab_users ();
2355}

2357/* clear_symtab_users_once:

 This function is run after symbol reading, or from a cleanup.
 If an old symbol table was obsoleted, the old symbol table
 has been blown away, but the other GDB data structures that may
 reference it have not yet been cleared or re-directed.  (The old
 symtab was zapped, and the cleanup queued, in free_named_symtab()
 below.)

 This function can be queued N times as a cleanup, or called
 directly; it will do all the work the first time, and then will be a
 no-op until the next time it is queued.  This works by bumping a
 counter at queueing time.  Much later when the cleanup is run, or at
 the end of symbol processing (in case the cleanup is discarded), if
 the queued count is greater than the "done-count", we do the work
 and set the done-count to the queued count.  If the queued count is
 less than or equal to the done-count, we just ignore the call.  This
 is needed because reading a single .o file will often replace many
 symtabs (one per .h file, for example), and we don't want to reset
 the breakpoints N times in the user's face.

 The reason we both queue a cleanup, and call it directly after symbol
 reading, is because the cleanup protects us in case of errors, but is
 discarded if symbol reading is successful.  */

2382#if 0
2383/* FIXME:  As free_named_symtabs is currently a big noop this function
 is no longer needed.  */
2385static void clear_symtab_users_once (void);

2387static int clear_symtab_users_queued;
2388static int clear_symtab_users_done;

2390static void
2391clear_symtab_users_once (void)
2392{
/* Enforce once-per-`do_cleanups'-semantics */
if (clear_symtab_users_queued <= clear_symtab_users_done)
  return;
clear_symtab_users_done = clear_symtab_users_queued;

clear_symtab_users ();
2399}
2400#endif

2402/* Delete the specified psymtab, and any others that reference it.  */

2404static void
2405cashier_psymtab (struct partial_symtab *pst)
2406{
struct partial_symtab *ps, *pprev = NULL((void*)0);
int i;

/* Find its previous psymtab in the chain */
for (ps = pst->objfile->psymtabs; ps; ps = ps->next)
  {
    if (ps == pst)
break;
    pprev = ps;
  }

if (ps)
  {
    /* Unhook it from the chain.  */
    if (ps == pst->objfile->psymtabs)
pst->objfile->psymtabs = ps->next;
    else
pprev->next = ps->next;

    /* FIXME, we can't conveniently deallocate the entries in the
       partial_symbol lists (global_psymbols/static_psymbols) that
       this psymtab points to.  These just take up space until all
       the psymtabs are reclaimed.  Ditto the dependencies list and
       filename, which are all in the objfile_obstack.  */

    /* We need to cashier any psymtab that has this one as a dependency... */
  again:
    for (ps = pst->objfile->psymtabs; ps; ps = ps->next)
{
 for (i = 0; i < ps->number_of_dependencies; i++)
   {
     if (ps->dependencies[i] == pst)
{
  cashier_psymtab (ps);
  goto again;	/* Must restart, chain has been munged. */
}
   }
}
  }
2446}

2448/* If a symtab or psymtab for filename NAME is found, free it along
 with any dependent breakpoints, displays, etc.
 Used when loading new versions of object modules with the "add-file"
 command.  This is only called on the top-level symtab or psymtab's name;
 it is not called for subsidiary files such as .h files.

 Return value is 1 if we blew away the environment, 0 if not.
 FIXME.  The return value appears to never be used.

 FIXME.  I think this is not the best way to do this.  We should
 work on being gentler to the environment while still cleaning up
 all stray pointers into the freed symtab.  */

2461int
2462free_named_symtabs (char *name)
2463{
2464#if 0
/* FIXME:  With the new method of each objfile having it's own
   psymtab list, this function needs serious rethinking.  In particular,
   why was it ever necessary to toss psymtabs with specific compilation
   unit filenames, as opposed to all psymtabs from a particular symbol
   file?  -- fnf
   Well, the answer is that some systems permit reloading of particular
   compilation units.  We want to blow away any old info about these
   compilation units, regardless of which objfiles they arrived in. --gnu.  */

struct symtab *s;
struct symtab *prev;
struct partial_symtab *ps;
struct blockvector *bv;
int blewit = 0;

/* We only wack things if the symbol-reload switch is set.  */
if (!symbol_reloading)
  return 0;

/* Some symbol formats have trouble providing file names... */
if (name == 0 || *name == '\0')
  return 0;

/* Look for a psymtab with the specified name.  */

2490again2:
for (ps = partial_symtab_list; ps; ps = ps->next)
  {
    if (strcmp (name, ps->filename) == 0)
{
 cashier_psymtab (ps);	/* Blow it away...and its little dog, too.  */
 goto again2;		/* Must restart, chain has been munged */
}
  }

/* Look for a symtab with the specified name.  */

for (s = symtab_list; s; s = s->next)
  {
    if (strcmp (name, s->filename) == 0)
break;
    prev = s;
  }

if (s)
  {
    if (s == symtab_list)
symtab_list = s->next;
    else
prev->next = s->next;

    /* For now, queue a delete for all breakpoints, displays, etc., whether
       or not they depend on the symtab being freed.  This should be
       changed so that only those data structures affected are deleted.  */

    /* But don't delete anything if the symtab is empty.
       This test is necessary due to a bug in "dbxread.c" that
       causes empty symtabs to be created for N_SO symbols that
       contain the pathname of the object file.  (This problem
       has been fixed in GDB 3.9x).  */

    bv = BLOCKVECTOR (s)(s)->blockvector;
    if (BLOCKVECTOR_NBLOCKS (bv)(bv)->nblocks > 2
 || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, GLOBAL_BLOCK)(bv)->block[GLOBAL_BLOCK])
 || BLOCK_NSYMS (BLOCKVECTOR_BLOCK (bv, STATIC_BLOCK)(bv)->block[STATIC_BLOCK]))
{
 complaint (&symfile_complaints, "Replacing old symbols for `%s'",
     name);
 clear_symtab_users_queued++;
 make_cleanup (clear_symtab_users_once, 0);
 blewit = 1;
}
    else
{
 complaint (&symfile_complaints, "Empty symbol table found for `%s'",
     name);
}

    free_symtab (s);
  }
else
  {
    /* It is still possible that some breakpoints will be affected
       even though no symtab was found, since the file might have
       been compiled without debugging, and hence not be associated
       with a symtab.  In order to handle this correctly, we would need
       to keep a list of text address ranges for undebuggable files.
       For now, we do nothing, since this is a fairly obscure case.  */
    ;
  }

/* FIXME, what about the minimal symbol table? */
return blewit;
2558#else
return (0);
2560#endif
2561}
2562
2563/* Allocate and partially fill a partial symtab.  It will be
 completely filled at the end of the symbol list.

 FILENAME is the name of the symbol-file we are reading from. */

2568struct partial_symtab *
2569start_psymtab_common (struct objfile *objfile,
      struct section_offsets *section_offsets, char *filename,
      CORE_ADDR textlow, struct partial_symbol **global_syms,
      struct partial_symbol **static_syms)
2573{
struct partial_symtab *psymtab;

psymtab = allocate_psymtab (filename, objfile);
1
Calling 'allocate_psymtab'→
psymtab->section_offsets = section_offsets;
psymtab->textlow = textlow;
psymtab->texthigh = psymtab->textlow;		/* default */
psymtab->globals_offset = global_syms - objfile->global_psymbols.list;
psymtab->statics_offset = static_syms - objfile->static_psymbols.list;
return (psymtab);
2583}
2584
2585/* 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).
 Return the partial symbol that has been added.  */

2589/* 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.  */

2600const struct partial_symbol *
2601add_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)
2606{
struct partial_symbol *psym;
char *buf = alloca (namelength + 1)__builtin_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
   bcache. */
static struct partial_symbol psymbol;

/* Create local copy of the partial symbol */
memcpy (buf, name, namelength);
buf[namelength] = '\0';
/* val and coreaddr are mutually exclusive, one of them *will* be zero */
if (val != 0)
  {
    SYMBOL_VALUE (&psymbol)(&psymbol)->ginfo.value.ivalue = val;
  }
else
  {
    SYMBOL_VALUE_ADDRESS (&psymbol)(&psymbol)->ginfo.value.address = coreaddr;
  }
SYMBOL_SECTION (&psymbol)(&psymbol)->ginfo.section = 0;
SYMBOL_LANGUAGE (&psymbol)(&psymbol)->ginfo.language = language;
PSYMBOL_DOMAIN (&psymbol)(&psymbol)->domain = domain;
PSYMBOL_CLASS (&psymbol)(&psymbol)->aclass = class;

SYMBOL_SET_NAMES (&psymbol, buf, namelength, objfile)symbol_set_names (&(&psymbol)->ginfo, buf, namelength
, objfile);

/* Stash the partial symbol away in the cache */
psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol),
	    objfile->psymbol_cache);

/* Save pointer to partial symbol in psymtab, growing symtab if needed. */
if (list->next >= list->list + list->size)
  {
    extend_psymbol_list (list, objfile);
  }
*list->next++ = psym;
OBJSTAT (objfile, n_psyms++)(objfile -> stats.n_psyms++);

return psym;
2646}

2648/* Add a symbol with a long value to a psymtab. This differs from
* add_psymbol_to_list above in taking both a mangled and a demangled
* name. */

2652void
2653add_psymbol_with_dem_name_to_list (char *name, int namelength, char *dem_name,
		   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)
2660{
struct partial_symbol *psym;
char *buf = alloca (namelength + 1)__builtin_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
   bcache. */
static struct partial_symbol psymbol;

/* Create local copy of the partial symbol */

memcpy (buf, name, namelength);
buf[namelength] = '\0';
DEPRECATED_SYMBOL_NAME (&psymbol)(&psymbol)->ginfo.name = deprecated_bcache (buf, namelength + 1,
					 objfile->psymbol_cache);

buf = alloca (dem_namelength + 1)__builtin_alloca(dem_namelength + 1);
memcpy (buf, dem_name, dem_namelength);
buf[dem_namelength] = '\0';

switch (language)
  {
  case language_c:
  case language_cplus:
    SYMBOL_CPLUS_DEMANGLED_NAME (&psymbol)(&psymbol)->ginfo.language_specific.cplus_specific.demangled_name =
deprecated_bcache (buf, dem_namelength + 1, objfile->psymbol_cache);
    break;
    /* FIXME What should be done for the default case? Ignoring for now. */
  }

/* val and coreaddr are mutually exclusive, one of them *will* be zero */
if (val != 0)
  {
    SYMBOL_VALUE (&psymbol)(&psymbol)->ginfo.value.ivalue = val;
  }
else
  {
    SYMBOL_VALUE_ADDRESS (&psymbol)(&psymbol)->ginfo.value.address = coreaddr;
  }
SYMBOL_SECTION (&psymbol)(&psymbol)->ginfo.section = 0;
SYMBOL_LANGUAGE (&psymbol)(&psymbol)->ginfo.language = language;
PSYMBOL_DOMAIN (&psymbol)(&psymbol)->domain = domain;
PSYMBOL_CLASS (&psymbol)(&psymbol)->aclass = class;
SYMBOL_INIT_LANGUAGE_SPECIFIC (&psymbol, language)(symbol_init_language_specific (&(&psymbol)->ginfo
, (language)));

/* Stash the partial symbol away in the cache */
psym = deprecated_bcache (&psymbol, sizeof (struct partial_symbol),
	    objfile->psymbol_cache);

/* Save pointer to partial symbol in psymtab, growing symtab if needed. */
if (list->next >= list->list + list->size)
  {
    extend_psymbol_list (list, objfile);
  }
*list->next++ = psym;
OBJSTAT (objfile, n_psyms++)(objfile -> stats.n_psyms++);
2715}

2717/* Initialize storage for partial symbols.  */

2719void
2720init_psymbol_list (struct objfile *objfile, int total_symbols)
2721{
/* Free any previously allocated psymbol lists.  */

if (objfile->global_psymbols.list)
  {
    xfree (objfile->global_psymbols.list);
  }
if (objfile->static_psymbols.list)
  {
    xfree (objfile->static_psymbols.list);
  }

/* Current best guess is that approximately a twentieth
   of the total symbols (in a debugging file) are global or static
   oriented symbols */

objfile->global_psymbols.size = total_symbols / 10;
objfile->static_psymbols.size = total_symbols / 10;

if (objfile->global_psymbols.size > 0)
  {
    objfile->global_psymbols.next =
objfile->global_psymbols.list = (struct partial_symbol **)
xmalloc ((objfile->global_psymbols.size
  * sizeof (struct partial_symbol *)));
  }
if (objfile->static_psymbols.size > 0)
  {
    objfile->static_psymbols.next =
objfile->static_psymbols.list = (struct partial_symbol **)
xmalloc ((objfile->static_psymbols.size
  * sizeof (struct partial_symbol *)));
  }
2754}

2756/* OVERLAYS:
 The following code implements an abstraction for debugging overlay sections.

 The target model is as follows:
 1) The gnu linker will permit multiple sections to be mapped into the
 same VMA, each with its own unique LMA (or load address).
 2) It is assumed that some runtime mechanism exists for mapping the
 sections, one by one, from the load address into the VMA address.
 3) This code provides a mechanism for gdb to keep track of which
 sections should be considered to be mapped from the VMA to the LMA.
 This information is used for symbol lookup, and memory read/write.
 For instance, if a section has been mapped then its contents
 should be read from the VMA, otherwise from the LMA.

 Two levels of debugger support for overlays are available.  One is
 "manual", in which the debugger relies on the user to tell it which
 overlays are currently mapped.  This level of support is
 implemented entirely in the core debugger, and the information about
 whether a section is mapped is kept in the objfile->obj_section table.

 The second level of support is "automatic", and is only available if
 the target-specific code provides functionality to read the target's
 overlay mapping table, and translate its contents for the debugger
 (by updating the mapped state information in the obj_section tables).

 The interface is as follows:
 User commands:
 overlay map <name>   -- tell gdb to consider this section mapped
 overlay unmap <name> -- tell gdb to consider this section unmapped
 overlay list         -- list the sections that GDB thinks are mapped
 overlay read-target  -- get the target's state of what's mapped
 overlay off/manual/auto -- set overlay debugging state
 Functional interface:
 find_pc_mapped_section(pc):    if the pc is in the range of a mapped
 section, return that section.
 find_pc_overlay(pc):       find any overlay section that contains
 the pc, either in its VMA or its LMA
 overlay_is_mapped(sect):       true if overlay is marked as mapped
 section_is_overlay(sect):      true if section's VMA != LMA
 pc_in_mapped_range(pc,sec):    true if pc belongs to section's VMA
 pc_in_unmapped_range(...):     true if pc belongs to section's LMA
 sections_overlap(sec1, sec2):  true if mapped sec1 and sec2 ranges overlap
 overlay_mapped_address(...):   map an address from section's LMA to VMA
 overlay_unmapped_address(...): map an address from section's VMA to LMA
 symbol_overlayed_address(...): Return a "current" address for symbol:
 either in VMA or LMA depending on whether
 the symbol's section is currently mapped
*/

2805/* Overlay debugging state: */

2807enum overlay_debugging_state overlay_debugging = ovly_off;
2808int overlay_cache_invalid = 0;	/* True if need to refresh mapped state */

2810/* Target vector for refreshing overlay mapped state */
2811static void simple_overlay_update (struct obj_section *);
2812void (*target_overlay_update) (struct obj_section *) = simple_overlay_update;

2814/* Function: section_is_overlay (SECTION)
 Returns true if SECTION has VMA not equal to LMA, ie.
 SECTION is loaded at an address different from where it will "run".  */

2818int
2819section_is_overlay (asection *section)
2820{
/* FIXME: need bfd *, so we can use bfd_section_lma methods. */

if (overlay_debugging)
  if (section && section->lma != 0 &&
section->vma != section->lma)
    return 1;

return 0;
2829}

2831/* Function: overlay_invalidate_all (void)
 Invalidate the mapped state of all overlay sections (mark it as stale).  */

2834static void
2835overlay_invalidate_all (void)
2836{
struct objfile *objfile;
struct obj_section *sect;

ALL_OBJSECTIONS (objfile, sect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile
) = (objfile)->next) for (sect = objfile->sections; sect
 < objfile->sections_end; sect++)
  if (section_is_overlay (sect->the_bfd_section))
  sect->ovly_mapped = -1;
2843}

2845/* Function: overlay_is_mapped (SECTION)
 Returns true if section is an overlay, and is currently mapped.
 Private: public access is thru function section_is_mapped.

 Access to the ovly_mapped flag is restricted to this function, so
 that we can do automatic update.  If the global flag
 OVERLAY_CACHE_INVALID is set (by wait_for_inferior), then call
 overlay_invalidate_all.  If the mapped state of the particular
 section is stale, then call TARGET_OVERLAY_UPDATE to refresh it.  */

2855static int
2856overlay_is_mapped (struct obj_section *osect)
2857{
if (osect == 0 || !section_is_overlay (osect->the_bfd_section))
  return 0;

switch (overlay_debugging)
  {
  default:
  case ovly_off:
    return 0;			/* overlay debugging off */
  case ovly_auto:		/* overlay debugging automatic */
    /* Unles there is a target_overlay_update function,
       there's really nothing useful to do here (can't really go auto)  */
    if (target_overlay_update)
{
 if (overlay_cache_invalid)
   {
     overlay_invalidate_all ();
     overlay_cache_invalid = 0;
   }
 if (osect->ovly_mapped == -1)
   (*target_overlay_update) (osect);
}
    /* fall thru to manual case */
  case ovly_on:		/* overlay debugging manual */
    return osect->ovly_mapped == 1;
  }
2883}

2885/* Function: section_is_mapped
 Returns true if section is an overlay, and is currently mapped.  */

2888int
2889section_is_mapped (asection *section)
2890{
struct objfile *objfile;
struct obj_section *osect;

if (overlay_debugging)
  if (section && section_is_overlay (section))
    ALL_OBJSECTIONS (objfile, osect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile
) = (objfile)->next) for (osect = objfile->sections; osect
 < objfile->sections_end; osect++)
if (osect->the_bfd_section == section)
return overlay_is_mapped (osect);

return 0;
2901}

2903/* Function: pc_in_unmapped_range
 If PC falls into the lma range of SECTION, return true, else false.  */

2906CORE_ADDR
2907pc_in_unmapped_range (CORE_ADDR pc, asection *section)
2908{
/* FIXME: need bfd *, so we can use bfd_section_lma methods. */

int size;

if (overlay_debugging)
  if (section && section_is_overlay (section))
    {
size = bfd_get_section_size (section)((section)->_raw_size);
if (section->lma <= pc && pc < section->lma + size)
 return 1;
    }
return 0;
2921}

2923/* Function: pc_in_mapped_range
 If PC falls into the vma range of SECTION, return true, else false.  */

2926CORE_ADDR
2927pc_in_mapped_range (CORE_ADDR pc, asection *section)
2928{
/* FIXME: need bfd *, so we can use bfd_section_vma methods. */

int size;

if (overlay_debugging)
  if (section && section_is_overlay (section))
    {
size = bfd_get_section_size (section)((section)->_raw_size);
if (section->vma <= pc && pc < section->vma + size)
 return 1;
    }
return 0;
2941}


2944/* Return true if the mapped ranges of sections A and B overlap, false
 otherwise.  */
2946static int
2947sections_overlap (asection *a, asection *b)
2948{
/* FIXME: need bfd *, so we can use bfd_section_vma methods. */

CORE_ADDR a_start = a->vma;
CORE_ADDR a_end = a->vma + bfd_get_section_size (a)((a)->_raw_size);
CORE_ADDR b_start = b->vma;
CORE_ADDR b_end = b->vma + bfd_get_section_size (b)((b)->_raw_size);

return (a_start < b_end && b_start < a_end);
2957}

2959/* Function: overlay_unmapped_address (PC, SECTION)
 Returns the address corresponding to PC in the unmapped (load) range.
 May be the same as PC.  */

2963CORE_ADDR
2964overlay_unmapped_address (CORE_ADDR pc, asection *section)
2965{
/* FIXME: need bfd *, so we can use bfd_section_lma methods. */

if (overlay_debugging)
  if (section && section_is_overlay (section) &&
pc_in_mapped_range (pc, section))
    return pc + section->lma - section->vma;

return pc;
2974}

2976/* Function: overlay_mapped_address (PC, SECTION)
 Returns the address corresponding to PC in the mapped (runtime) range.
 May be the same as PC.  */

2980CORE_ADDR
2981overlay_mapped_address (CORE_ADDR pc, asection *section)
2982{
/* FIXME: need bfd *, so we can use bfd_section_vma methods. */

if (overlay_debugging)
  if (section && section_is_overlay (section) &&
pc_in_unmapped_range (pc, section))
    return pc + section->vma - section->lma;

return pc;
2991}


2994/* Function: symbol_overlayed_address
 Return one of two addresses (relative to the VMA or to the LMA),
 depending on whether the section is mapped or not.  */

2998CORE_ADDR
2999symbol_overlayed_address (CORE_ADDR address, asection *section)
3000{
if (overlay_debugging)
  {
    /* If the symbol has no section, just return its regular address. */
    if (section == 0)
return address;
    /* If the symbol's section is not an overlay, just return its address */
    if (!section_is_overlay (section))
return address;
    /* If the symbol's section is mapped, just return its address */
    if (section_is_mapped (section))
return address;
    /*
     * HOWEVER: if the symbol is in an overlay section which is NOT mapped,
     * then return its LOADED address rather than its vma address!!
     */
    return overlay_unmapped_address (address, section);
  }
return address;
3019}

3021/* Function: find_pc_overlay (PC)
 Return the best-match overlay section for PC:
 If PC matches a mapped overlay section's VMA, return that section.
 Else if PC matches an unmapped section's VMA, return that section.
 Else if PC matches an unmapped section's LMA, return that section.  */

3027asection *
3028find_pc_overlay (CORE_ADDR pc)
3029{
struct objfile *objfile;
struct obj_section *osect, *best_match = NULL((void*)0);

if (overlay_debugging)
  ALL_OBJSECTIONS (objfile, osect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile
) = (objfile)->next) for (osect = objfile->sections; osect
 < objfile->sections_end; osect++)
    if (section_is_overlay (osect->the_bfd_section))
    {
if (pc_in_mapped_range (pc, osect->the_bfd_section))
 {
   if (overlay_is_mapped (osect))
     return osect->the_bfd_section;
   else
     best_match = osect;
 }
else if (pc_in_unmapped_range (pc, osect->the_bfd_section))
 best_match = osect;
    }
return best_match ? best_match->the_bfd_section : NULL((void*)0);
3048}

3050/* Function: find_pc_mapped_section (PC)
 If PC falls into the VMA address range of an overlay section that is
 currently marked as MAPPED, return that section.  Else return NULL.  */

3054asection *
3055find_pc_mapped_section (CORE_ADDR pc)
3056{
struct objfile *objfile;
struct obj_section *osect;

if (overlay_debugging)
  ALL_OBJSECTIONS (objfile, osect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile
) = (objfile)->next) for (osect = objfile->sections; osect
 < objfile->sections_end; osect++)
    if (pc_in_mapped_range (pc, osect->the_bfd_section) &&
 overlay_is_mapped (osect))
    return osect->the_bfd_section;

return NULL((void*)0);
3067}

3069/* Function: list_overlays_command
 Print a list of mapped sections and their PC ranges */

3072void
3073list_overlays_command (char *args, int from_tty)
3074{
int nmapped = 0;
struct objfile *objfile;
struct obj_section *osect;

if (overlay_debugging)
  ALL_OBJSECTIONS (objfile, osect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile
) = (objfile)->next) for (osect = objfile->sections; osect
 < objfile->sections_end; osect++)
    if (overlay_is_mapped (osect))
    {
const char *name;
bfd_vma lma, vma;
int size;

vma = bfd_section_vma (objfile->obfd, osect->the_bfd_section)((osect->the_bfd_section)->vma);
lma = bfd_section_lma (objfile->obfd, osect->the_bfd_section)((osect->the_bfd_section)->lma);
size = bfd_get_section_size (osect->the_bfd_section)((osect->the_bfd_section)->_raw_size);
name = bfd_section_name (objfile->obfd, osect->the_bfd_section)((osect->the_bfd_section)->name);

printf_filtered ("Section %s, loaded at ", name);
print_address_numeric (lma, 1, gdb_stdout);
puts_filtered (" - ");
print_address_numeric (lma + size, 1, gdb_stdout);
printf_filtered (", mapped at ");
print_address_numeric (vma, 1, gdb_stdout);
puts_filtered (" - ");
print_address_numeric (vma + size, 1, gdb_stdout);
puts_filtered ("\n");

nmapped++;
    }
if (nmapped == 0)
  printf_filtered ("No sections are mapped.\n");
3106}

3108/* Function: map_overlay_command
 Mark the named section as mapped (ie. residing at its VMA address).  */

3111void
3112map_overlay_command (char *args, int from_tty)
3113{
struct objfile *objfile, *objfile2;
struct obj_section *sec, *sec2;
asection *bfdsec;

if (!overlay_debugging)
  error ("\
3120Overlay debugging not enabled.  Use either the 'overlay auto' or\n\
3121the 'overlay manual' command.");

if (args == 0 || *args == 0)
  error ("Argument required: name of an overlay section");

/* First, find a section matching the user supplied argument */
ALL_OBJSECTIONS (objfile, sec)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile
) = (objfile)->next) for (sec = objfile->sections; sec <
 objfile->sections_end; sec++)
  if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section)((sec->the_bfd_section)->name), args))
  {
    /* Now, check to see if the section is an overlay. */
    bfdsec = sec->the_bfd_section;
    if (!section_is_overlay (bfdsec))
continue;		/* not an overlay section */

    /* Mark the overlay as "mapped" */
    sec->ovly_mapped = 1;

    /* Next, make a pass and unmap any sections that are
       overlapped by this new section: */
    ALL_OBJSECTIONS (objfile2, sec2)for ((objfile2) = object_files; (objfile2) != ((void*)0); (objfile2
) = (objfile2)->next) for (sec2 = objfile2->sections; sec2
 < objfile2->sections_end; sec2++)
if (sec2->ovly_mapped
          && sec != sec2
          && sec->the_bfd_section != sec2->the_bfd_section
          && sections_overlap (sec->the_bfd_section,
                               sec2->the_bfd_section))
{
 if (info_verbose)
   printf_unfiltered ("Note: section %s unmapped by overlap\n",
	     bfd_section_name (objfile->obfd,((sec2->the_bfd_section)->name)
			       sec2->the_bfd_section)((sec2->the_bfd_section)->name));
 sec2->ovly_mapped = 0;	/* sec2 overlaps sec: unmap sec2 */
}
    return;
  }
error ("No overlay section called %s", args);
3156}

3158/* Function: unmap_overlay_command
 Mark the overlay section as unmapped
 (ie. resident in its LMA address range, rather than the VMA range).  */

3162void
3163unmap_overlay_command (char *args, int from_tty)
3164{
struct objfile *objfile;
struct obj_section *sec;

if (!overlay_debugging)
  error ("\
3170Overlay debugging not enabled.  Use either the 'overlay auto' or\n\
3171the 'overlay manual' command.");

if (args == 0 || *args == 0)
  error ("Argument required: name of an overlay section");

/* First, find a section matching the user supplied argument */
ALL_OBJSECTIONS (objfile, sec)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile
) = (objfile)->next) for (sec = objfile->sections; sec <
 objfile->sections_end; sec++)
  if (!strcmp (bfd_section_name (objfile->obfd, sec->the_bfd_section)((sec->the_bfd_section)->name), args))
  {
    if (!sec->ovly_mapped)
error ("Section %s is not mapped", args);
    sec->ovly_mapped = 0;
    return;
  }
error ("No overlay section called %s", args);
3186}

3188/* Function: overlay_auto_command
 A utility command to turn on overlay debugging.
 Possibly this should be done via a set/show command. */

3192static void
3193overlay_auto_command (char *args, int from_tty)
3194{
overlay_debugging = ovly_auto;
enable_overlay_breakpoints ();
if (info_verbose)
  printf_unfiltered ("Automatic overlay debugging enabled.");
3199}

3201/* Function: overlay_manual_command
 A utility command to turn on overlay debugging.
 Possibly this should be done via a set/show command. */

3205static void
3206overlay_manual_command (char *args, int from_tty)
3207{
overlay_debugging = ovly_on;
disable_overlay_breakpoints ();
if (info_verbose)
  printf_unfiltered ("Overlay debugging enabled.");
3212}

3214/* Function: overlay_off_command
 A utility command to turn on overlay debugging.
 Possibly this should be done via a set/show command. */

3218static void
3219overlay_off_command (char *args, int from_tty)
3220{
overlay_debugging = ovly_off;
disable_overlay_breakpoints ();
if (info_verbose)
  printf_unfiltered ("Overlay debugging disabled.");
3225}

3227static void
3228overlay_load_command (char *args, int from_tty)
3229{
if (target_overlay_update)
  (*target_overlay_update) (NULL((void*)0));
else
  error ("This target does not know how to read its overlay state.");
3234}

3236/* Function: overlay_command
 A place-holder for a mis-typed command */

3239/* Command list chain containing all defined "overlay" subcommands. */
3240struct cmd_list_element *overlaylist;

3242static void
3243overlay_command (char *args, int from_tty)
3244{
printf_unfiltered
  ("\"overlay\" must be followed by the name of an overlay command.\n");
help_list (overlaylist, "overlay ", -1, gdb_stdout);
3248}


3251/* Target Overlays for the "Simplest" overlay manager:

 This is GDB's default target overlay layer.  It works with the
 minimal overlay manager supplied as an example by Cygnus.  The
 entry point is via a function pointer "target_overlay_update",
 so targets that use a different runtime overlay manager can
 substitute their own overlay_update function and take over the
 function pointer.

 The overlay_update function pokes around in the target's data structures
 to see what overlays are mapped, and updates GDB's overlay mapping with
 this information.

 In this simple implementation, the target data structures are as follows:
 unsigned _novlys;            /# number of overlay sections #/
 unsigned _ovly_table[_novlys][4] = {
 {VMA, SIZE, LMA, MAPPED},    /# one entry per overlay section #/
 {..., ...,  ..., ...},
 }
 unsigned _novly_regions;     /# number of overlay regions #/
 unsigned _ovly_region_table[_novly_regions][3] = {
 {VMA, SIZE, MAPPED_TO_LMA},  /# one entry per overlay region #/
 {..., ...,  ...},
 }
 These functions will attempt to update GDB's mappedness state in the
 symbol section table, based on the target's mappedness state.

 To do this, we keep a cached copy of the target's _ovly_table, and
 attempt to detect when the cached copy is invalidated.  The main
 entry point is "simple_overlay_update(SECT), which looks up SECT in
 the cached table and re-reads only the entry for that section from
 the target (whenever possible).
*/

3285/* Cached, dynamically allocated copies of the target data structures: */
3286static unsigned (*cache_ovly_table)[4] = 0;
3287#if 0
3288static unsigned (*cache_ovly_region_table)[3] = 0;
3289#endif
3290static unsigned cache_novlys = 0;
3291#if 0
3292static unsigned cache_novly_regions = 0;
3293#endif
3294static CORE_ADDR cache_ovly_table_base = 0;
3295#if 0
3296static CORE_ADDR cache_ovly_region_table_base = 0;
3297#endif
3298enum ovly_index
{
  VMA, SIZE, LMA, MAPPED
};
3302#define TARGET_LONG_BYTES((gdbarch_long_bit (current_gdbarch)) / 8) (TARGET_LONG_BIT(gdbarch_long_bit (current_gdbarch)) / TARGET_CHAR_BIT8)

3304/* Throw away the cached copy of _ovly_table */
3305static void
3306simple_free_overlay_table (void)
3307{
if (cache_ovly_table)
  xfree (cache_ovly_table);
cache_novlys = 0;
cache_ovly_table = NULL((void*)0);
cache_ovly_table_base = 0;
3313}

3315#if 0
3316/* Throw away the cached copy of _ovly_region_table */
3317static void
3318simple_free_overlay_region_table (void)
3319{
if (cache_ovly_region_table)
  xfree (cache_ovly_region_table);
cache_novly_regions = 0;
cache_ovly_region_table = NULL((void*)0);
cache_ovly_region_table_base = 0;
3325}
3326#endif

3328/* Read an array of ints from the target into a local buffer.
 Convert to host order.  int LEN is number of ints  */
3330static void
3331read_target_long_array (CORE_ADDR memaddr, unsigned int *myaddr, int len)
3332{
/* FIXME (alloca): Not safe if array is very large. */
char *buf = alloca (len * TARGET_LONG_BYTES)__builtin_alloca(len * ((gdbarch_long_bit (current_gdbarch)) /
 8));
int i;

read_memory (memaddr, buf, len * TARGET_LONG_BYTES((gdbarch_long_bit (current_gdbarch)) / 8));
for (i = 0; i < len; i++)
  myaddr[i] = extract_unsigned_integer (TARGET_LONG_BYTES((gdbarch_long_bit (current_gdbarch)) / 8) * i + buf,
			  TARGET_LONG_BYTES((gdbarch_long_bit (current_gdbarch)) / 8));
3341}

3343/* Find and grab a copy of the target _ovly_table
 (and _novlys, which is needed for the table's size) */
3345static int
3346simple_read_overlay_table (void)
3347{
struct minimal_symbol *novlys_msym, *ovly_table_msym;

simple_free_overlay_table ();
novlys_msym = lookup_minimal_symbol ("_novlys", NULL((void*)0), NULL((void*)0));
if (! novlys_msym)
  {
    error ("Error reading inferior's overlay table: "
           "couldn't find `_novlys' variable\n"
           "in inferior.  Use `overlay manual' mode.");
    return 0;
  }

ovly_table_msym = lookup_minimal_symbol ("_ovly_table", NULL((void*)0), NULL((void*)0));
if (! ovly_table_msym)
  {
    error ("Error reading inferior's overlay table: couldn't find "
           "`_ovly_table' array\n"
           "in inferior.  Use `overlay manual' mode.");
    return 0;
  }

cache_novlys = read_memory_integer (SYMBOL_VALUE_ADDRESS (novlys_msym)(novlys_msym)->ginfo.value.address, 4);
cache_ovly_table
  = (void *) xmalloc (cache_novlys * sizeof (*cache_ovly_table));
cache_ovly_table_base = SYMBOL_VALUE_ADDRESS (ovly_table_msym)(ovly_table_msym)->ginfo.value.address;
read_target_long_array (cache_ovly_table_base,
                        (int *) cache_ovly_table,
                        cache_novlys * 4);

return 1;			/* SUCCESS */
3378}

3380#if 0
3381/* Find and grab a copy of the target _ovly_region_table
 (and _novly_regions, which is needed for the table's size) */
3383static int
3384simple_read_overlay_region_table (void)
3385{
struct minimal_symbol *msym;

simple_free_overlay_region_table ();
msym = lookup_minimal_symbol ("_novly_regions", NULL((void*)0), NULL((void*)0));
if (msym != NULL((void*)0))
  cache_novly_regions = read_memory_integer (SYMBOL_VALUE_ADDRESS (msym)(msym)->ginfo.value.address, 4);
else
  return 0;			/* failure */
cache_ovly_region_table = (void *) xmalloc (cache_novly_regions * 12);
if (cache_ovly_region_table != NULL((void*)0))
  {
    msym = lookup_minimal_symbol ("_ovly_region_table", NULL((void*)0), NULL((void*)0));
    if (msym != NULL((void*)0))
{
 cache_ovly_region_table_base = SYMBOL_VALUE_ADDRESS (msym)(msym)->ginfo.value.address;
 read_target_long_array (cache_ovly_region_table_base,
		  (int *) cache_ovly_region_table,
		  cache_novly_regions * 3);
}
    else
return 0;		/* failure */
  }
else
  return 0;			/* failure */
return 1;			/* SUCCESS */
3411}
3412#endif

3414/* Function: simple_overlay_update_1
 A helper function for simple_overlay_update.  Assuming a cached copy
 of _ovly_table exists, look through it to find an entry whose vma,
 lma and size match those of OSECT.  Re-read the entry and make sure
 it still matches OSECT (else the table may no longer be valid).
 Set OSECT's mapped state to match the entry.  Return: 1 for
 success, 0 for failure.  */

3422static int
3423simple_overlay_update_1 (struct obj_section *osect)
3424{
int i, size;
bfd *obfd = osect->objfile->obfd;
asection *bsect = osect->the_bfd_section;

size = bfd_get_section_size (osect->the_bfd_section)((osect->the_bfd_section)->_raw_size);
for (i = 0; i < cache_novlys; i++)
  if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect)((bsect)->vma)
&& cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)((bsect)->lma)
/* && cache_ovly_table[i][SIZE] == size */ )
    {
read_target_long_array (cache_ovly_table_base + i * TARGET_LONG_BYTES((gdbarch_long_bit (current_gdbarch)) / 8),
		(int *) cache_ovly_table[i], 4);
if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect)((bsect)->vma)
   && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)((bsect)->lma)
   /* && cache_ovly_table[i][SIZE] == size */ )
 {
   osect->ovly_mapped = cache_ovly_table[i][MAPPED];
   return 1;
 }
else	/* Warning!  Warning!  Target's ovly table has changed! */
 return 0;
    }
return 0;
3448}

3450/* Function: simple_overlay_update
 If OSECT is NULL, then update all sections' mapped state
 (after re-reading the entire target _ovly_table).
 If OSECT is non-NULL, then try to find a matching entry in the
 cached ovly_table and update only OSECT's mapped state.
 If a cached entry can't be found or the cache isn't valid, then
 re-read the entire cache, and go ahead and update all sections.  */

3458static void
3459simple_overlay_update (struct obj_section *osect)
3460{
struct objfile *objfile;

/* Were we given an osect to look up?  NULL means do all of them. */
if (osect)
  /* Have we got a cached copy of the target's overlay table? */
  if (cache_ovly_table != NULL((void*)0))
    /* Does its cached location match what's currently in the symtab? */
    if (cache_ovly_table_base ==
 SYMBOL_VALUE_ADDRESS (lookup_minimal_symbol ("_ovly_table", NULL, NULL))(lookup_minimal_symbol ("_ovly_table", ((void*)0), ((void*)0)
))->ginfo.value.address)
/* Then go ahead and try to look up this single section in the cache */
if (simple_overlay_update_1 (osect))
 /* Found it!  We're done. */
 return;

/* Cached table no good: need to read the entire table anew.
   Or else we want all the sections, in which case it's actually
   more efficient to read the whole table in one block anyway.  */

if (! simple_read_overlay_table ())
  return;

/* Now may as well update all sections, even if only one was requested. */
ALL_OBJSECTIONS (objfile, osect)for ((objfile) = object_files; (objfile) != ((void*)0); (objfile
) = (objfile)->next) for (osect = objfile->sections; osect
 < objfile->sections_end; osect++)
  if (section_is_overlay (osect->the_bfd_section))
  {
    int i, size;
    bfd *obfd = osect->objfile->obfd;
    asection *bsect = osect->the_bfd_section;

    size = bfd_get_section_size (bsect)((bsect)->_raw_size);
    for (i = 0; i < cache_novlys; i++)
if (cache_ovly_table[i][VMA] == bfd_section_vma (obfd, bsect)((bsect)->vma)
   && cache_ovly_table[i][LMA] == bfd_section_lma (obfd, bsect)((bsect)->lma)
   /* && cache_ovly_table[i][SIZE] == size */ )
 { /* obj_section matches i'th entry in ovly_table */
   osect->ovly_mapped = cache_ovly_table[i][MAPPED];
   break;		/* finished with inner for loop: break out */
 }
  }
3500}

3502/* 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.  */

3507static void
3508symfile_dummy_outputs (bfd *abfd, asection *sectp, void *dummy)
3509{
sectp->output_section = sectp;
sectp->output_offset = 0;
3512}

3514/* 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.  */

3525bfd_byte *
3526symfile_relocate_debug_section (bfd *abfd, asection *sectp, bfd_byte *buf)
3527{
/* We're only interested in debugging sections with relocation
   information.  */
if ((sectp->flags & SEC_RELOC0x004) == 0)
  return NULL((void*)0);
if ((sectp->flags & SEC_DEBUGGING0x10000) == 0)
  return NULL((void*)0);

/* 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((void*)0));

return bfd_simple_get_relocated_section_contents (abfd, sectp, buf, NULL((void*)0));
3540}

3542void
3543_initialize_symfile (void)
3544{
struct cmd_list_element *c;

c = add_cmd ("symbol-file", class_files, symbol_file_command,
      "Load symbol table from executable file FILE.\n\
3549The `file' command can also load symbol tables, as well as setting the file\n\
3550to execute.", &cmdlist);
set_cmd_completer (c, filename_completer);

c = add_cmd ("add-symbol-file", class_files, add_symbol_file_command,
      "Usage: add-symbol-file FILE ADDR [-s <SECT> <SECT_ADDR> -s <SECT> <SECT_ADDR> ...]\n\
3555Load the symbols from FILE, assuming FILE has been dynamically loaded.\n\
3556ADDR is the starting address of the file's text.\n\
3557The optional arguments are section-name section-address pairs and\n\
3558should be specified if the data and bss segments are not contiguous\n\
3559with the text.  SECT is a section name to be loaded at SECT_ADDR.",
      &cmdlist);
set_cmd_completer (c, filename_completer);

c = add_cmd ("add-shared-symbol-files", class_files,
      add_shared_symbol_files_command,
 "Load the symbols from shared objects in the dynamic linker's link map.",
      &cmdlist);
c = add_alias_cmd ("assf", "add-shared-symbol-files", class_files, 1,
     &cmdlist);

c = add_cmd ("load", class_files, load_command,
      "Dynamically load FILE into the running program, and record its symbols\n\
3572for access from GDB.", &cmdlist);
set_cmd_completer (c, filename_completer);

deprecated_add_show_from_set
  (add_set_cmd ("symbol-reloading", class_support, var_boolean,
  (char *) &symbol_reloading,
   "Set dynamic symbol table reloading multiple times in one run.",
  &setlist),
   &showlist);

add_prefix_cmd ("overlay", class_support, overlay_command,
  "Commands for debugging overlays.", &overlaylist,
  "overlay ", 0, &cmdlist);

add_com_alias ("ovly", "overlay", class_alias, 1);
add_com_alias ("ov", "overlay", class_alias, 1);

add_cmd ("map-overlay", class_support, map_overlay_command,
  "Assert that an overlay section is mapped.", &overlaylist);

add_cmd ("unmap-overlay", class_support, unmap_overlay_command,
  "Assert that an overlay section is unmapped.", &overlaylist);

add_cmd ("list-overlays", class_support, list_overlays_command,
  "List mappings of overlay sections.", &overlaylist);

add_cmd ("manual", class_support, overlay_manual_command,
  "Enable overlay debugging.", &overlaylist);
add_cmd ("off", class_support, overlay_off_command,
  "Disable overlay debugging.", &overlaylist);
add_cmd ("auto", class_support, overlay_auto_command,
  "Enable automatic overlay debugging.", &overlaylist);
add_cmd ("load-target", class_support, overlay_load_command,
  "Read the overlay mapping state from the target.", &overlaylist);

/* Filename extension to source language lookup table: */
init_filename_language_table ();
c = add_set_cmd ("extension-language", class_files, var_string_noescape,
   (char *) &ext_args,
   "Set mapping between filename extension and source language.\n\
3612Usage: set extension-language .foo bar",
   &setlist);
set_cmd_cfunc (c, set_ext_lang_command);

add_info ("extensions", info_ext_lang_command,
   "All filename extensions associated with a source language.");

deprecated_add_show_from_set
  (add_set_cmd ("download-write-size", class_obscure,
  var_integer, (char *) &download_write_size,
  "Set the write size used when downloading a program.\n"
  "Only used when downloading a program onto a remote\n"
  "target. Specify zero, or a negative value, to disable\n"
  "blocked writes. The actual size of each transfer is also\n"
  "limited by the size of the target packet and the memory\n"
  "cache.\n",
  &setlist),
   &showlist);

debug_file_directory = xstrdup (DEBUGDIR"/usr/lib/debug");
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".debug"
      "' subdirectory,\n"
      "and lastly at the path of the directory of the binary with\n"
      "the global debug-file directory prepended\n",
      &setlist));
deprecated_add_show_from_set (c, &showlist);
set_cmd_completer (c, filename_completer);
3644}