/* Generic symbol-table support for the BFD library.
- Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
- 2000, 2001, 2002, 2003
- Free Software Foundation, Inc.
+ Copyright (C) 1990-2020 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
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
+ the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
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. */
+ Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
/*
SECTION
allocating storage, and the actual reading process. This is an
excerpt from an application which reads the symbol table:
-| long storage_needed;
-| asymbol **symbol_table;
-| long number_of_symbols;
-| long i;
+| long storage_needed;
+| asymbol **symbol_table;
+| long number_of_symbols;
+| long i;
|
-| storage_needed = bfd_get_symtab_upper_bound (abfd);
+| storage_needed = bfd_get_symtab_upper_bound (abfd);
|
| if (storage_needed < 0)
| FAIL
|
-| if (storage_needed == 0)
-| return;
-|
-| symbol_table = (asymbol **) xmalloc (storage_needed);
-| ...
-| number_of_symbols =
-| bfd_canonicalize_symtab (abfd, symbol_table);
+| if (storage_needed == 0)
+| return;
+|
+| symbol_table = xmalloc (storage_needed);
+| ...
+| number_of_symbols =
+| bfd_canonicalize_symtab (abfd, symbol_table);
|
| if (number_of_symbols < 0)
| FAIL
|
-| for (i = 0; i < number_of_symbols; i++)
-| process_symbol (symbol_table[i]);
+| for (i = 0; i < number_of_symbols; i++)
+| process_symbol (symbol_table[i]);
All storage for the symbols themselves is in an objalloc
connected to the BFD; it is freed when the BFD is closed.
which has been created using <<bfd_make_empty_symbol>>. Here is an
example showing the creation of a symbol table with only one element:
-| #include "bfd.h"
-| int main (void)
-| {
-| bfd *abfd;
-| asymbol *ptrs[2];
-| asymbol *new;
+| #include "sysdep.h"
+| #include "bfd.h"
+| int main (void)
+| {
+| bfd *abfd;
+| asymbol *ptrs[2];
+| asymbol *new;
|
-| abfd = bfd_openw ("foo","a.out-sunos-big");
-| bfd_set_format (abfd, bfd_object);
-| new = bfd_make_empty_symbol (abfd);
-| new->name = "dummy_symbol";
-| new->section = bfd_make_section_old_way (abfd, ".text");
-| new->flags = BSF_GLOBAL;
-| new->value = 0x12345;
+| abfd = bfd_openw ("foo","a.out-sunos-big");
+| bfd_set_format (abfd, bfd_object);
+| new = bfd_make_empty_symbol (abfd);
+| new->name = "dummy_symbol";
+| new->section = bfd_make_section_old_way (abfd, ".text");
+| new->flags = BSF_GLOBAL;
+| new->value = 0x12345;
|
-| ptrs[0] = new;
-| ptrs[1] = (asymbol *)0;
+| ptrs[0] = new;
+| ptrs[1] = 0;
|
-| bfd_set_symtab (abfd, ptrs, 1);
-| bfd_close (abfd);
-| return 0;
-| }
+| bfd_set_symtab (abfd, ptrs, 1);
+| bfd_close (abfd);
+| return 0;
+| }
|
-| ./makesym
-| nm foo
-| 00012345 A dummy_symbol
+| ./makesym
+| nm foo
+| 00012345 A dummy_symbol
- Many formats cannot represent arbitary symbol information; for
- instance, the <<a.out>> object format does not allow an
- arbitary number of sections. A symbol pointing to a section
+ Many formats cannot represent arbitrary symbol information; for
+ instance, the <<a.out>> object format does not allow an
+ arbitrary number of sections. A symbol pointing to a section
which is not one of <<.text>>, <<.data>> or <<.bss>> cannot
be described.
CODE_FRAGMENT
.
-.typedef struct symbol_cache_entry
+.typedef struct bfd_symbol
.{
. {* A pointer to the BFD which owns the symbol. This information
. is necessary so that a back end can work out what additional
. symvalue value;
.
. {* Attributes of a symbol. *}
-.#define BSF_NO_FLAGS 0x00
+.#define BSF_NO_FLAGS 0
.
. {* The symbol has local scope; <<static>> in <<C>>. The value
. is the offset into the section of the data. *}
-.#define BSF_LOCAL 0x01
+.#define BSF_LOCAL (1 << 0)
.
. {* The symbol has global scope; initialized data in <<C>>. The
. value is the offset into the section of the data. *}
-.#define BSF_GLOBAL 0x02
+.#define BSF_GLOBAL (1 << 1)
.
. {* The symbol has global scope and is exported. The value is
. the offset into the section of the data. *}
-.#define BSF_EXPORT BSF_GLOBAL {* No real difference. *}
+.#define BSF_EXPORT BSF_GLOBAL {* No real difference. *}
.
. {* A normal C symbol would be one of:
-. <<BSF_LOCAL>>, <<BSF_FORT_COMM>>, <<BSF_UNDEFINED>> or
-. <<BSF_GLOBAL>>. *}
+. <<BSF_LOCAL>>, <<BSF_UNDEFINED>> or <<BSF_GLOBAL>>. *}
.
-. {* The symbol is a debugging record. The value has an arbitary
+. {* The symbol is a debugging record. The value has an arbitrary
. meaning, unless BSF_DEBUGGING_RELOC is also set. *}
-.#define BSF_DEBUGGING 0x08
+.#define BSF_DEBUGGING (1 << 2)
.
. {* The symbol denotes a function entry point. Used in ELF,
. perhaps others someday. *}
-.#define BSF_FUNCTION 0x10
+.#define BSF_FUNCTION (1 << 3)
.
. {* Used by the linker. *}
-.#define BSF_KEEP 0x20
-.#define BSF_KEEP_G 0x40
+.#define BSF_KEEP (1 << 5)
+.
+. {* An ELF common symbol. *}
+.#define BSF_ELF_COMMON (1 << 6)
.
. {* A weak global symbol, overridable without warnings by
. a regular global symbol of the same name. *}
-.#define BSF_WEAK 0x80
+.#define BSF_WEAK (1 << 7)
.
. {* This symbol was created to point to a section, e.g. ELF's
. STT_SECTION symbols. *}
-.#define BSF_SECTION_SYM 0x100
+.#define BSF_SECTION_SYM (1 << 8)
.
. {* The symbol used to be a common symbol, but now it is
. allocated. *}
-.#define BSF_OLD_COMMON 0x200
-.
-. {* The default value for common data. *}
-.#define BFD_FORT_COMM_DEFAULT_VALUE 0
+.#define BSF_OLD_COMMON (1 << 9)
.
. {* In some files the type of a symbol sometimes alters its
. location in an output file - ie in coff a <<ISFCN>> symbol
. which is also <<C_EXT>> symbol appears where it was
. declared and not at the end of a section. This bit is set
. by the target BFD part to convey this information. *}
-.#define BSF_NOT_AT_END 0x400
+.#define BSF_NOT_AT_END (1 << 10)
.
. {* Signal that the symbol is the label of constructor section. *}
-.#define BSF_CONSTRUCTOR 0x800
+.#define BSF_CONSTRUCTOR (1 << 11)
.
. {* Signal that the symbol is a warning symbol. The name is a
. warning. The name of the next symbol is the one to warn about;
. if a reference is made to a symbol with the same name as the next
. symbol, a warning is issued by the linker. *}
-.#define BSF_WARNING 0x1000
+.#define BSF_WARNING (1 << 12)
.
. {* Signal that the symbol is indirect. This symbol is an indirect
. pointer to the symbol with the same name as the next symbol. *}
-.#define BSF_INDIRECT 0x2000
+.#define BSF_INDIRECT (1 << 13)
.
. {* BSF_FILE marks symbols that contain a file name. This is used
. for ELF STT_FILE symbols. *}
-.#define BSF_FILE 0x4000
+.#define BSF_FILE (1 << 14)
.
. {* Symbol is from dynamic linking information. *}
-.#define BSF_DYNAMIC 0x8000
+.#define BSF_DYNAMIC (1 << 15)
.
. {* The symbol denotes a data object. Used in ELF, and perhaps
. others someday. *}
-.#define BSF_OBJECT 0x10000
+.#define BSF_OBJECT (1 << 16)
.
. {* This symbol is a debugging symbol. The value is the offset
. into the section of the data. BSF_DEBUGGING should be set
. as well. *}
-.#define BSF_DEBUGGING_RELOC 0x20000
+.#define BSF_DEBUGGING_RELOC (1 << 17)
.
. {* This symbol is thread local. Used in ELF. *}
-.#define BSF_THREAD_LOCAL 0x40000
+.#define BSF_THREAD_LOCAL (1 << 18)
+.
+. {* This symbol represents a complex relocation expression,
+. with the expression tree serialized in the symbol name. *}
+.#define BSF_RELC (1 << 19)
+.
+. {* This symbol represents a signed complex relocation expression,
+. with the expression tree serialized in the symbol name. *}
+.#define BSF_SRELC (1 << 20)
+.
+. {* This symbol was created by bfd_get_synthetic_symtab. *}
+.#define BSF_SYNTHETIC (1 << 21)
+.
+. {* This symbol is an indirect code object. Unrelated to BSF_INDIRECT.
+. The dynamic linker will compute the value of this symbol by
+. calling the function that it points to. BSF_FUNCTION must
+. also be also set. *}
+.#define BSF_GNU_INDIRECT_FUNCTION (1 << 22)
+. {* This symbol is a globally unique data object. The dynamic linker
+. will make sure that in the entire process there is just one symbol
+. with this name and type in use. BSF_OBJECT must also be set. *}
+.#define BSF_GNU_UNIQUE (1 << 23)
.
. flagword flags;
.
. {* A pointer to the section to which this symbol is
. relative. This will always be non NULL, there are special
. sections for undefined and absolute symbols. *}
-. struct sec *section;
+. struct bfd_section *section;
.
. {* Back end special data. *}
. union
. {
-. PTR p;
+. void *p;
. bfd_vma i;
. }
. udata;
.
*/
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "libbfd.h"
#include "safe-ctype.h"
#include "bfdlink.h"
#include "aout/stab_gnu.h"
-static char coff_section_type PARAMS ((const char *));
-static char decode_section_type PARAMS ((const struct sec *));
-static int cmpindexentry PARAMS ((const PTR, const PTR));
-
/*
DOCDD
INODE
the BFD, then return 0. If an error occurs, return -1.
.#define bfd_get_symtab_upper_bound(abfd) \
-. BFD_SEND (abfd, _bfd_get_symtab_upper_bound, (abfd))
+. BFD_SEND (abfd, _bfd_get_symtab_upper_bound, (abfd))
.
*/
bfd_is_local_label
SYNOPSIS
- bfd_boolean bfd_is_local_label (bfd *abfd, asymbol *sym);
+ bfd_boolean bfd_is_local_label (bfd *abfd, asymbol *sym);
DESCRIPTION
Return TRUE if the given symbol @var{sym} in the BFD @var{abfd} is
*/
bfd_boolean
-bfd_is_local_label (abfd, sym)
- bfd *abfd;
- asymbol *sym;
+bfd_is_local_label (bfd *abfd, asymbol *sym)
{
/* The BSF_SECTION_SYM check is needed for IA-64, where every label that
starts with '.' is local. This would accidentally catch section names
if we didn't reject them here. */
- if ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_SECTION_SYM)) != 0)
+ if ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_FILE | BSF_SECTION_SYM)) != 0)
return FALSE;
if (sym->name == NULL)
return FALSE;
bfd_is_local_label_name
SYNOPSIS
- bfd_boolean bfd_is_local_label_name (bfd *abfd, const char *name);
+ bfd_boolean bfd_is_local_label_name (bfd *abfd, const char *name);
DESCRIPTION
Return TRUE if a symbol with the name @var{name} in the BFD
local label.
.#define bfd_is_local_label_name(abfd, name) \
-. BFD_SEND (abfd, _bfd_is_local_label_name, (abfd, name))
+. BFD_SEND (abfd, _bfd_is_local_label_name, (abfd, name))
+.
+*/
+
+/*
+FUNCTION
+ bfd_is_target_special_symbol
+
+SYNOPSIS
+ bfd_boolean bfd_is_target_special_symbol (bfd *abfd, asymbol *sym);
+
+DESCRIPTION
+ Return TRUE iff a symbol @var{sym} in the BFD @var{abfd} is something
+ special to the particular target represented by the BFD. Such symbols
+ should normally not be mentioned to the user.
+
+.#define bfd_is_target_special_symbol(abfd, sym) \
+. BFD_SEND (abfd, _bfd_is_target_special_symbol, (abfd, sym))
.
*/
including the NULL.
.#define bfd_canonicalize_symtab(abfd, location) \
-. BFD_SEND (abfd, _bfd_canonicalize_symtab,\
-. (abfd, location))
+. BFD_SEND (abfd, _bfd_canonicalize_symtab, (abfd, location))
.
*/
bfd_set_symtab
SYNOPSIS
- bfd_boolean bfd_set_symtab (bfd *abfd, asymbol **location, unsigned int count);
+ bfd_boolean bfd_set_symtab
+ (bfd *abfd, asymbol **location, unsigned int count);
DESCRIPTION
Arrange that when the output BFD @var{abfd} is closed,
*/
bfd_boolean
-bfd_set_symtab (abfd, location, symcount)
- bfd *abfd;
- asymbol **location;
- unsigned int symcount;
+bfd_set_symtab (bfd *abfd, asymbol **location, unsigned int symcount)
{
- if ((abfd->format != bfd_object) || (bfd_read_p (abfd)))
+ if (abfd->format != bfd_object || bfd_read_p (abfd))
{
bfd_set_error (bfd_error_invalid_operation);
return FALSE;
}
- bfd_get_outsymbols (abfd) = location;
- bfd_get_symcount (abfd) = symcount;
+ abfd->outsymbols = location;
+ abfd->symcount = symcount;
return TRUE;
}
bfd_print_symbol_vandf
SYNOPSIS
- void bfd_print_symbol_vandf (bfd *abfd, PTR file, asymbol *symbol);
+ void bfd_print_symbol_vandf (bfd *abfd, void *file, asymbol *symbol);
DESCRIPTION
Print the value and flags of the @var{symbol} supplied to the
stream @var{file}.
*/
void
-bfd_print_symbol_vandf (abfd, arg, symbol)
- bfd *abfd;
- PTR arg;
- asymbol *symbol;
+bfd_print_symbol_vandf (bfd *abfd, void *arg, asymbol *symbol)
{
FILE *file = (FILE *) arg;
flagword type = symbol->flags;
- if (symbol->section != (asection *) NULL)
- bfd_fprintf_vma (abfd, file,
- symbol->value + symbol->section->vma);
+ if (symbol->section != NULL)
+ bfd_fprintf_vma (abfd, file, symbol->value + symbol->section->vma);
else
bfd_fprintf_vma (abfd, file, symbol->value);
fprintf (file, " %c%c%c%c%c%c%c",
((type & BSF_LOCAL)
? (type & BSF_GLOBAL) ? '!' : 'l'
- : (type & BSF_GLOBAL) ? 'g' : ' '),
+ : (type & BSF_GLOBAL) ? 'g'
+ : (type & BSF_GNU_UNIQUE) ? 'u' : ' '),
(type & BSF_WEAK) ? 'w' : ' ',
(type & BSF_CONSTRUCTOR) ? 'C' : ' ',
(type & BSF_WARNING) ? 'W' : ' ',
- (type & BSF_INDIRECT) ? 'I' : ' ',
+ (type & BSF_INDIRECT) ? 'I' : (type & BSF_GNU_INDIRECT_FUNCTION) ? 'i' : ' ',
(type & BSF_DEBUGGING) ? 'd' : (type & BSF_DYNAMIC) ? 'D' : ' ',
((type & BSF_FUNCTION)
? 'F'
information, and will cause problems later on.
.#define bfd_make_empty_symbol(abfd) \
-. BFD_SEND (abfd, _bfd_make_empty_symbol, (abfd))
+. BFD_SEND (abfd, _bfd_make_empty_symbol, (abfd))
.
*/
_bfd_generic_make_empty_symbol
SYNOPSIS
- asymbol * _bfd_generic_make_empty_symbol (bfd *);
+ asymbol *_bfd_generic_make_empty_symbol (bfd *);
DESCRIPTION
Create a new <<asymbol>> structure for the BFD @var{abfd}
*/
asymbol *
-_bfd_generic_make_empty_symbol (abfd)
- bfd *abfd;
+_bfd_generic_make_empty_symbol (bfd *abfd)
{
- bfd_size_type amt = sizeof (asymbol);
- asymbol *new = (asymbol *) bfd_zalloc (abfd, amt);
- if (new)
- new->the_bfd = abfd;
- return new;
+ size_t amt = sizeof (asymbol);
+ asymbol *new_symbol = (asymbol *) bfd_zalloc (abfd, amt);
+ if (new_symbol)
+ new_symbol->the_bfd = abfd;
+ return new_symbol;
}
/*
yet to be worked out.
.#define bfd_make_debug_symbol(abfd,ptr,size) \
-. BFD_SEND (abfd, _bfd_make_debug_symbol, (abfd, ptr, size))
+. BFD_SEND (abfd, _bfd_make_debug_symbol, (abfd, ptr, size))
.
*/
char type;
};
-/* Map section names to POSIX/BSD single-character symbol types.
+/* Map special section names to POSIX/BSD single-character symbol types.
This table is probably incomplete. It is sorted for convenience of
adding entries. Since it is so short, a linear search is used. */
static const struct section_to_type stt[] =
{
- {".bss", 'b'},
- {"code", 't'}, /* MRI .text */
- {".data", 'd'},
- {"*DEBUG*", 'N'},
- {".debug", 'N'}, /* MSVC's .debug (non-standard debug syms) */
- {".drectve", 'i'}, /* MSVC's .drective section */
- {".edata", 'e'}, /* MSVC's .edata (export) section */
- {".fini", 't'}, /* ELF fini section */
- {".idata", 'i'}, /* MSVC's .idata (import) section */
- {".init", 't'}, /* ELF init section */
- {".pdata", 'p'}, /* MSVC's .pdata (stack unwind) section */
- {".rdata", 'r'}, /* Read only data. */
- {".rodata", 'r'}, /* Read only data. */
- {".sbss", 's'}, /* Small BSS (uninitialized data). */
- {".scommon", 'c'}, /* Small common. */
- {".sdata", 'g'}, /* Small initialized data. */
- {".text", 't'},
- {"vars", 'd'}, /* MRI .data */
- {"zerovars", 'b'}, /* MRI .bss */
+ {".drectve", 'i'}, /* MSVC's .drective section */
+ {".edata", 'e'}, /* MSVC's .edata (export) section */
+ {".idata", 'i'}, /* MSVC's .idata (import) section */
+ {".pdata", 'p'}, /* MSVC's .pdata (stack unwind) section */
{0, 0}
};
/* Return the single-character symbol type corresponding to
section S, or '?' for an unknown COFF section.
- Check for any leading string which matches, so .text5 returns
- 't' as well as .text */
+ Check for leading strings which match, followed by a number, '.',
+ or '$' so .idata5 matches the .idata entry. */
static char
-coff_section_type (s)
- const char *s;
+coff_section_type (const char *s)
{
const struct section_to_type *t;
for (t = &stt[0]; t->section; t++)
- if (!strncmp (s, t->section, strlen (t->section)))
- return t->type;
+ {
+ size_t len = strlen (t->section);
+ if (strncmp (s, t->section, len) == 0
+ && memchr (".$0123456789", s[len], 13) != 0)
+ return t->type;
+ }
return '?';
}
SECTION, or '?' for an unknown section. This uses section flags to
identify sections.
- FIXME These types are unhandled: c, i, e, p. If we handled these also,
+ FIXME These types are unhandled: e, i, p. If we handled these also,
we could perhaps obsolete coff_section_type. */
static char
-decode_section_type (section)
- const struct sec *section;
+decode_section_type (const struct bfd_section *section)
{
if (section->flags & SEC_CODE)
return 't';
}
if (section->flags & SEC_DEBUGGING)
return 'N';
- if ((section->flags & SEC_HAS_CONTENTS) &&
- (section->flags & SEC_READONLY))
+ if ((section->flags & SEC_HAS_CONTENTS) && (section->flags & SEC_READONLY))
return 'n';
return '?';
int bfd_decode_symclass (asymbol *symbol);
*/
int
-bfd_decode_symclass (symbol)
- asymbol *symbol;
+bfd_decode_symclass (asymbol *symbol)
{
char c;
- if (bfd_is_com_section (symbol->section))
- return 'C';
+ if (symbol->section && bfd_is_com_section (symbol->section))
+ {
+ if (symbol->section == bfd_com_section_ptr)
+ return 'C';
+ else
+ return 'c';
+ }
if (bfd_is_und_section (symbol->section))
{
if (symbol->flags & BSF_WEAK)
}
if (bfd_is_ind_section (symbol->section))
return 'I';
+ if (symbol->flags & BSF_GNU_INDIRECT_FUNCTION)
+ return 'i';
if (symbol->flags & BSF_WEAK)
{
/* If weak, determine if it's specifically an object
else
return 'W';
}
+ if (symbol->flags & BSF_GNU_UNIQUE)
+ return 'u';
if (!(symbol->flags & (BSF_GLOBAL | BSF_LOCAL)))
return '?';
*/
bfd_boolean
-bfd_is_undefined_symclass (symclass)
- int symclass;
+bfd_is_undefined_symclass (int symclass)
{
return symclass == 'U' || symclass == 'w' || symclass == 'v';
}
*/
void
-bfd_symbol_info (symbol, ret)
- asymbol *symbol;
- symbol_info *ret;
+bfd_symbol_info (asymbol *symbol, symbol_info *ret)
{
ret->type = bfd_decode_symclass (symbol);
bfd_copy_private_symbol_data
SYNOPSIS
- bfd_boolean bfd_copy_private_symbol_data (bfd *ibfd, asymbol *isym, bfd *obfd, asymbol *osym);
+ bfd_boolean bfd_copy_private_symbol_data
+ (bfd *ibfd, asymbol *isym, bfd *obfd, asymbol *osym);
DESCRIPTION
Copy private symbol information from @var{isym} in the BFD
Not enough memory exists to create private data for @var{osec}.
.#define bfd_copy_private_symbol_data(ibfd, isymbol, obfd, osymbol) \
-. BFD_SEND (obfd, _bfd_copy_private_symbol_data, \
-. (ibfd, isymbol, obfd, osymbol))
+. BFD_SEND (obfd, _bfd_copy_private_symbol_data, \
+. (ibfd, isymbol, obfd, osymbol))
.
*/
version. It just uses BFD asymbol structures as mini symbols. */
long
-_bfd_generic_read_minisymbols (abfd, dynamic, minisymsp, sizep)
- bfd *abfd;
- bfd_boolean dynamic;
- PTR *minisymsp;
- unsigned int *sizep;
+_bfd_generic_read_minisymbols (bfd *abfd,
+ bfd_boolean dynamic,
+ void **minisymsp,
+ unsigned int *sizep)
{
long storage;
asymbol **syms = NULL;
if (storage == 0)
return 0;
- syms = (asymbol **) bfd_malloc ((bfd_size_type) storage);
+ syms = (asymbol **) bfd_malloc (storage);
if (syms == NULL)
goto error_return;
if (symcount < 0)
goto error_return;
- *minisymsp = (PTR) syms;
- *sizep = sizeof (asymbol *);
+ if (symcount == 0)
+ /* We return 0 above when storage is 0. Exit in the same state
+ here, so as to not complicate callers with having to deal with
+ freeing memory for zero symcount. */
+ free (syms);
+ else
+ {
+ *minisymsp = syms;
+ *sizep = sizeof (asymbol *);
+ }
return symcount;
error_return:
bfd_set_error (bfd_error_no_symbols);
- if (syms != NULL)
- free (syms);
+ free (syms);
return -1;
}
we just return the asymbol the minisymbol points to. */
asymbol *
-_bfd_generic_minisymbol_to_symbol (abfd, dynamic, minisym, sym)
- bfd *abfd ATTRIBUTE_UNUSED;
- bfd_boolean dynamic ATTRIBUTE_UNUSED;
- const PTR minisym;
- asymbol *sym ATTRIBUTE_UNUSED;
+_bfd_generic_minisymbol_to_symbol (bfd *abfd ATTRIBUTE_UNUSED,
+ bfd_boolean dynamic ATTRIBUTE_UNUSED,
+ const void *minisym,
+ asymbol *sym ATTRIBUTE_UNUSED)
{
return *(asymbol **) minisym;
}
char *directory_name;
char *file_name;
char *function_name;
+ int idx;
};
/* Compare two indexentry structures. This is called via qsort. */
static int
-cmpindexentry (a, b)
- const PTR a;
- const PTR b;
+cmpindexentry (const void *a, const void *b)
{
const struct indexentry *contestantA = (const struct indexentry *) a;
const struct indexentry *contestantB = (const struct indexentry *) b;
if (contestantA->val < contestantB->val)
return -1;
- else if (contestantA->val > contestantB->val)
+ if (contestantA->val > contestantB->val)
return 1;
- else
- return 0;
+ return contestantA->idx - contestantB->idx;
}
/* A pointer to this structure is stored in *pinfo. */
};
bfd_boolean
-_bfd_stab_section_find_nearest_line (abfd, symbols, section, offset, pfound,
- pfilename, pfnname, pline, pinfo)
- bfd *abfd;
- asymbol **symbols;
- asection *section;
- bfd_vma offset;
- bfd_boolean *pfound;
- const char **pfilename;
- const char **pfnname;
- unsigned int *pline;
- PTR *pinfo;
+_bfd_stab_section_find_nearest_line (bfd *abfd,
+ asymbol **symbols,
+ asection *section,
+ bfd_vma offset,
+ bfd_boolean *pfound,
+ const char **pfilename,
+ const char **pfnname,
+ unsigned int *pline,
+ void **pinfo)
{
struct stab_find_info *info;
bfd_size_type stabsize, strsize;
bfd_byte *stab, *str;
- bfd_byte *last_stab = NULL;
+ bfd_byte *nul_fun, *nul_str;
bfd_size_type stroff;
struct indexentry *indexentry;
char *file_name;
char *directory_name;
- int saw_fun;
bfd_boolean saw_line, saw_func;
*pfound = FALSE;
return TRUE;
}
- stabsize = info->stabsec->_raw_size;
- strsize = info->strsec->_raw_size;
+ stabsize = (info->stabsec->rawsize
+ ? info->stabsec->rawsize
+ : info->stabsec->size);
+ strsize = (info->strsec->rawsize
+ ? info->strsec->rawsize
+ : info->strsec->size);
}
else
{
long reloc_size, reloc_count;
arelent **reloc_vector;
int i;
- char *name;
char *function_name;
bfd_size_type amt = sizeof *info;
if (info->stabsec == NULL || info->strsec == NULL)
{
- /* No stabs debugging information. Set *pinfo so that we
- can return quickly in the info != NULL case above. */
- *pinfo = (PTR) info;
- return TRUE;
+ /* Try SOM section names. */
+ info->stabsec = bfd_get_section_by_name (abfd, "$GDB_SYMBOLS$");
+ info->strsec = bfd_get_section_by_name (abfd, "$GDB_STRINGS$");
+
+ if (info->stabsec == NULL || info->strsec == NULL)
+ {
+ /* No stabs debugging information. Set *pinfo so that we
+ can return quickly in the info != NULL case above. */
+ *pinfo = info;
+ return TRUE;
+ }
}
- stabsize = info->stabsec->_raw_size;
- strsize = info->strsec->_raw_size;
+ stabsize = (info->stabsec->rawsize
+ ? info->stabsec->rawsize
+ : info->stabsec->size);
+ stabsize = (stabsize / STABSIZE) * STABSIZE;
+ strsize = (info->strsec->rawsize
+ ? info->strsec->rawsize
+ : info->strsec->size);
info->stabs = (bfd_byte *) bfd_alloc (abfd, stabsize);
info->strs = (bfd_byte *) bfd_alloc (abfd, strsize);
return FALSE;
if (! bfd_get_section_contents (abfd, info->stabsec, info->stabs,
- (bfd_vma) 0, stabsize)
+ 0, stabsize)
|| ! bfd_get_section_contents (abfd, info->strsec, info->strs,
- (bfd_vma) 0, strsize))
+ 0, strsize))
return FALSE;
- /* If this is a relocateable object file, we have to relocate
+ /* Stab strings ought to be nul terminated. Ensure the last one
+ is, to prevent running off the end of the buffer. */
+ info->strs[strsize - 1] = 0;
+
+ /* If this is a relocatable object file, we have to relocate
the entries in .stab. This should always be simple 32 bit
relocations against symbols defined in this object file, so
this should be no big deal. */
reloc_size = bfd_get_reloc_upper_bound (abfd, info->stabsec);
if (reloc_size < 0)
return FALSE;
- reloc_vector = (arelent **) bfd_malloc ((bfd_size_type) reloc_size);
+ reloc_vector = (arelent **) bfd_malloc (reloc_size);
if (reloc_vector == NULL && reloc_size != 0)
return FALSE;
reloc_count = bfd_canonicalize_reloc (abfd, info->stabsec, reloc_vector,
symbols);
if (reloc_count < 0)
{
- if (reloc_vector != NULL)
- free (reloc_vector);
+ free (reloc_vector);
return FALSE;
}
if (reloc_count > 0)
arelent *r;
unsigned long val;
asymbol *sym;
+ bfd_size_type octets;
r = *pr;
+ /* Ignore R_*_NONE relocs. */
+ if (r->howto->dst_mask == 0)
+ continue;
+
+ octets = r->address * bfd_octets_per_byte (abfd, NULL);
if (r->howto->rightshift != 0
|| r->howto->size != 2
|| r->howto->bitsize != 32
|| r->howto->pc_relative
|| r->howto->bitpos != 0
- || r->howto->dst_mask != 0xffffffff)
+ || r->howto->dst_mask != 0xffffffff
+ || octets + 4 > stabsize)
{
- (*_bfd_error_handler)
- (_("Unsupported .stab relocation"));
+ _bfd_error_handler
+ (_("unsupported .stab relocation"));
bfd_set_error (bfd_error_invalid_operation);
- if (reloc_vector != NULL)
- free (reloc_vector);
+ free (reloc_vector);
return FALSE;
}
- val = bfd_get_32 (abfd, info->stabs + r->address);
+ val = bfd_get_32 (abfd, info->stabs + octets);
val &= r->howto->src_mask;
sym = *r->sym_ptr_ptr;
val += sym->value + sym->section->vma + r->addend;
- bfd_put_32 (abfd, (bfd_vma) val, info->stabs + r->address);
+ bfd_put_32 (abfd, (bfd_vma) val, info->stabs + octets);
}
}
- if (reloc_vector != NULL)
- free (reloc_vector);
+ free (reloc_vector);
/* First time through this function, build a table matching
function VM addresses to stabs, then sort based on starting
table. */
info->indextablesize = 0;
- saw_fun = 1;
+ nul_fun = NULL;
for (stab = info->stabs; stab < info->stabs + stabsize; stab += STABSIZE)
{
if (stab[TYPEOFF] == (bfd_byte) N_SO)
{
- /* N_SO with null name indicates EOF */
- if (bfd_get_32 (abfd, stab + STRDXOFF) == 0)
- continue;
-
/* if we did not see a function def, leave space for one. */
- if (saw_fun == 0)
+ if (nul_fun != NULL)
++info->indextablesize;
- saw_fun = 0;
-
- /* two N_SO's in a row is a filename and directory. Skip */
- if (stab + STABSIZE < info->stabs + stabsize
- && *(stab + STABSIZE + TYPEOFF) == (bfd_byte) N_SO)
+ /* N_SO with null name indicates EOF */
+ if (bfd_get_32 (abfd, stab + STRDXOFF) == 0)
+ nul_fun = NULL;
+ else
{
- stab += STABSIZE;
+ nul_fun = stab;
+
+ /* two N_SO's in a row is a filename and directory. Skip */
+ if (stab + STABSIZE + TYPEOFF < info->stabs + stabsize
+ && *(stab + STABSIZE + TYPEOFF) == (bfd_byte) N_SO)
+ stab += STABSIZE;
}
}
- else if (stab[TYPEOFF] == (bfd_byte) N_FUN)
+ else if (stab[TYPEOFF] == (bfd_byte) N_FUN
+ && bfd_get_32 (abfd, stab + STRDXOFF) != 0)
{
- saw_fun = 1;
+ nul_fun = NULL;
++info->indextablesize;
}
}
- if (saw_fun == 0)
+ if (nul_fun != NULL)
++info->indextablesize;
if (info->indextablesize == 0)
file_name = NULL;
directory_name = NULL;
- saw_fun = 1;
+ nul_fun = NULL;
+ stroff = 0;
- for (i = 0, stroff = 0, stab = info->stabs, str = info->strs;
+ for (i = 0, stab = info->stabs, nul_str = str = info->strs;
i < info->indextablesize && stab < info->stabs + stabsize;
stab += STABSIZE)
{
/* The main file name. */
/* The following code creates a new indextable entry with
- a NULL function name if there were no N_FUNs in a file.
- Note that a N_SO without a file name is an EOF and
- there could be 2 N_SO following it with the new filename
- and directory. */
- if (saw_fun == 0)
+ a NULL function name if there were no N_FUNs in a file.
+ Note that a N_SO without a file name is an EOF and
+ there could be 2 N_SO following it with the new filename
+ and directory. */
+ if (nul_fun != NULL)
{
- info->indextable[i].val = bfd_get_32 (abfd, last_stab + VALOFF);
- info->indextable[i].stab = last_stab;
- info->indextable[i].str = str;
+ info->indextable[i].val = bfd_get_32 (abfd, nul_fun + VALOFF);
+ info->indextable[i].stab = nul_fun;
+ info->indextable[i].str = nul_str;
info->indextable[i].directory_name = directory_name;
info->indextable[i].file_name = file_name;
info->indextable[i].function_name = NULL;
+ info->indextable[i].idx = i;
++i;
}
- saw_fun = 0;
+ directory_name = NULL;
file_name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF);
- if (*file_name == '\0')
+ if (file_name == (char *) str)
{
- directory_name = NULL;
file_name = NULL;
- saw_fun = 1;
+ nul_fun = NULL;
}
else
{
- last_stab = stab;
- if (stab + STABSIZE >= info->stabs + stabsize
- || *(stab + STABSIZE + TYPEOFF) != (bfd_byte) N_SO)
- {
- directory_name = NULL;
- }
- else
+ nul_fun = stab;
+ nul_str = str;
+ if (file_name >= (char *) info->strs + strsize
+ || file_name < (char *) str)
+ file_name = NULL;
+ if (stab + STABSIZE + TYPEOFF < info->stabs + stabsize
+ && *(stab + STABSIZE + TYPEOFF) == (bfd_byte) N_SO)
{
/* Two consecutive N_SOs are a directory and a
file name. */
directory_name = file_name;
file_name = ((char *) str
+ bfd_get_32 (abfd, stab + STRDXOFF));
+ if (file_name >= (char *) info->strs + strsize
+ || file_name < (char *) str)
+ file_name = NULL;
}
}
break;
case N_SOL:
/* The name of an include file. */
file_name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF);
+ /* PR 17512: file: 0c680a1f. */
+ /* PR 17512: file: 5da8aec4. */
+ if (file_name >= (char *) info->strs + strsize
+ || file_name < (char *) str)
+ file_name = NULL;
break;
case N_FUN:
/* A function name. */
- saw_fun = 1;
- name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF);
-
- if (*name == '\0')
- name = NULL;
-
- function_name = name;
-
- if (name == NULL)
+ function_name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF);
+ if (function_name == (char *) str)
continue;
+ if (function_name >= (char *) info->strs + strsize
+ || function_name < (char *) str)
+ function_name = NULL;
+ nul_fun = NULL;
info->indextable[i].val = bfd_get_32 (abfd, stab + VALOFF);
info->indextable[i].stab = stab;
info->indextable[i].str = str;
info->indextable[i].directory_name = directory_name;
info->indextable[i].file_name = file_name;
info->indextable[i].function_name = function_name;
+ info->indextable[i].idx = i;
++i;
break;
}
}
- if (saw_fun == 0)
+ if (nul_fun != NULL)
{
- info->indextable[i].val = bfd_get_32 (abfd, last_stab + VALOFF);
- info->indextable[i].stab = last_stab;
- info->indextable[i].str = str;
+ info->indextable[i].val = bfd_get_32 (abfd, nul_fun + VALOFF);
+ info->indextable[i].stab = nul_fun;
+ info->indextable[i].str = nul_str;
info->indextable[i].directory_name = directory_name;
info->indextable[i].file_name = file_name;
info->indextable[i].function_name = NULL;
+ info->indextable[i].idx = i;
++i;
}
info->indextable[i].directory_name = NULL;
info->indextable[i].file_name = NULL;
info->indextable[i].function_name = NULL;
+ info->indextable[i].idx = i;
++i;
info->indextablesize = i;
qsort (info->indextable, (size_t) i, sizeof (struct indexentry),
cmpindexentry);
- *pinfo = (PTR) info;
+ *pinfo = info;
}
/* We are passed a section relative offset. The offsets in the
stabs information are absolute. */
- offset += bfd_get_section_vma (abfd, section);
+ offset += bfd_section_vma (section);
#ifdef ENABLE_CACHING
if (info->cached_indexentry != NULL
long low, high;
long mid = -1;
- /* Cache non-existant or invalid. Do binary search on
- indextable. */
+ /* Cache non-existent or invalid. Do binary search on
+ indextable. */
indexentry = NULL;
low = 0;
if (val <= offset)
{
file_name = (char *) str + bfd_get_32 (abfd, stab + STRDXOFF);
+ if (file_name >= (char *) info->strs + strsize
+ || file_name < (char *) str)
+ file_name = NULL;
*pline = 0;
}
break;
dirlen = strlen (directory_name);
if (info->filename == NULL
- || strncmp (info->filename, directory_name, dirlen) != 0
- || strcmp (info->filename + dirlen, file_name) != 0)
+ || filename_ncmp (info->filename, directory_name, dirlen) != 0
+ || filename_cmp (info->filename + dirlen, file_name) != 0)
{
size_t len;
- if (info->filename != NULL)
- free (info->filename);
+ /* Don't free info->filename here. objdump and other
+ apps keep a copy of a previously returned file name
+ pointer. */
len = strlen (file_name) + 1;
- info->filename = (char *) bfd_malloc ((bfd_size_type) dirlen + len);
+ info->filename = (char *) bfd_alloc (abfd, dirlen + len);
if (info->filename == NULL)
return FALSE;
memcpy (info->filename, directory_name, dirlen);
char *s;
/* This will typically be something like main:F(0,1), so we want
- to clobber the colon. It's OK to change the name, since the
- string is in our own local storage anyhow. */
+ to clobber the colon. It's OK to change the name, since the
+ string is in our own local storage anyhow. */
s = strchr (indexentry->function_name, ':');
if (s != NULL)
*s = '\0';
return TRUE;
}
+
+long
+_bfd_nosymbols_canonicalize_symtab (bfd *abfd ATTRIBUTE_UNUSED,
+ asymbol **location ATTRIBUTE_UNUSED)
+{
+ return 0;
+}
+
+void
+_bfd_nosymbols_print_symbol (bfd *abfd ATTRIBUTE_UNUSED,
+ void *afile ATTRIBUTE_UNUSED,
+ asymbol *symbol ATTRIBUTE_UNUSED,
+ bfd_print_symbol_type how ATTRIBUTE_UNUSED)
+{
+}
+
+void
+_bfd_nosymbols_get_symbol_info (bfd *abfd ATTRIBUTE_UNUSED,
+ asymbol *sym ATTRIBUTE_UNUSED,
+ symbol_info *ret ATTRIBUTE_UNUSED)
+{
+}
+
+const char *
+_bfd_nosymbols_get_symbol_version_string (bfd *abfd,
+ asymbol *symbol ATTRIBUTE_UNUSED,
+ bfd_boolean base_p ATTRIBUTE_UNUSED,
+ bfd_boolean *hidden ATTRIBUTE_UNUSED)
+{
+ return (const char *) _bfd_ptr_bfd_null_error (abfd);
+}
+
+bfd_boolean
+_bfd_nosymbols_bfd_is_local_label_name (bfd *abfd ATTRIBUTE_UNUSED,
+ const char *name ATTRIBUTE_UNUSED)
+{
+ return FALSE;
+}
+
+alent *
+_bfd_nosymbols_get_lineno (bfd *abfd, asymbol *sym ATTRIBUTE_UNUSED)
+{
+ return (alent *) _bfd_ptr_bfd_null_error (abfd);
+}
+
+bfd_boolean
+_bfd_nosymbols_find_nearest_line
+ (bfd *abfd,
+ asymbol **symbols ATTRIBUTE_UNUSED,
+ asection *section ATTRIBUTE_UNUSED,
+ bfd_vma offset ATTRIBUTE_UNUSED,
+ const char **filename_ptr ATTRIBUTE_UNUSED,
+ const char **functionname_ptr ATTRIBUTE_UNUSED,
+ unsigned int *line_ptr ATTRIBUTE_UNUSED,
+ unsigned int *discriminator_ptr ATTRIBUTE_UNUSED)
+{
+ return _bfd_bool_bfd_false_error (abfd);
+}
+
+bfd_boolean
+_bfd_nosymbols_find_line (bfd *abfd,
+ asymbol **symbols ATTRIBUTE_UNUSED,
+ asymbol *symbol ATTRIBUTE_UNUSED,
+ const char **filename_ptr ATTRIBUTE_UNUSED,
+ unsigned int *line_ptr ATTRIBUTE_UNUSED)
+{
+ return _bfd_bool_bfd_false_error (abfd);
+}
+
+bfd_boolean
+_bfd_nosymbols_find_inliner_info
+ (bfd *abfd,
+ const char **filename_ptr ATTRIBUTE_UNUSED,
+ const char **functionname_ptr ATTRIBUTE_UNUSED,
+ unsigned int *line_ptr ATTRIBUTE_UNUSED)
+{
+ return _bfd_bool_bfd_false_error (abfd);
+}
+
+asymbol *
+_bfd_nosymbols_bfd_make_debug_symbol (bfd *abfd,
+ void *ptr ATTRIBUTE_UNUSED,
+ unsigned long sz ATTRIBUTE_UNUSED)
+{
+ return (asymbol *) _bfd_ptr_bfd_null_error (abfd);
+}
+
+long
+_bfd_nosymbols_read_minisymbols (bfd *abfd,
+ bfd_boolean dynamic ATTRIBUTE_UNUSED,
+ void **minisymsp ATTRIBUTE_UNUSED,
+ unsigned int *sizep ATTRIBUTE_UNUSED)
+{
+ return _bfd_long_bfd_n1_error (abfd);
+}
+
+asymbol *
+_bfd_nosymbols_minisymbol_to_symbol (bfd *abfd,
+ bfd_boolean dynamic ATTRIBUTE_UNUSED,
+ const void *minisym ATTRIBUTE_UNUSED,
+ asymbol *sym ATTRIBUTE_UNUSED)
+{
+ return (asymbol *) _bfd_ptr_bfd_null_error (abfd);
+}
+
+long
+_bfd_nodynamic_get_synthetic_symtab (bfd *abfd,
+ long symcount ATTRIBUTE_UNUSED,
+ asymbol **syms ATTRIBUTE_UNUSED,
+ long dynsymcount ATTRIBUTE_UNUSED,
+ asymbol **dynsyms ATTRIBUTE_UNUSED,
+ asymbol **ret ATTRIBUTE_UNUSED)
+{
+ return _bfd_long_bfd_n1_error (abfd);
+}
projects / deliverable / binutils-gdb.git / blobdiff