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binutils-gdb/gdb/gdb_bfd.c
Tom Tromey 0e9f083f4c remove gdb_string.h 
This removes gdb_string.h.  This patch is purely mechanical.  I
created it by running the two commands:

    git rm common/gdb_string.h
    perl -pi -e's/"gdb_string.h"/<string.h>/;'  *.[chyl] */*.[chyl]

2013-11-18  Tom Tromey  <tromey@redhat.com>

	* common/gdb_string.h: Remove.
	* aarch64-tdep.c: Use string.h, not gdb_string.h.
	* ada-exp.y: Use string.h, not gdb_string.h.
	* ada-lang.c: Use string.h, not gdb_string.h.
	* ada-lex.l: Use string.h, not gdb_string.h.
	* ada-typeprint.c: Use string.h, not gdb_string.h.
	* ada-valprint.c: Use string.h, not gdb_string.h.
	* aix-thread.c: Use string.h, not gdb_string.h.
	* alpha-linux-tdep.c: Use string.h, not gdb_string.h.
	* alpha-mdebug-tdep.c: Use string.h, not gdb_string.h.
	* alpha-nat.c: Use string.h, not gdb_string.h.
	* alpha-osf1-tdep.c: Use string.h, not gdb_string.h.
	* alpha-tdep.c: Use string.h, not gdb_string.h.
	* alphanbsd-tdep.c: Use string.h, not gdb_string.h.
	* amd64-dicos-tdep.c: Use string.h, not gdb_string.h.
	* amd64-linux-nat.c: Use string.h, not gdb_string.h.
	* amd64-linux-tdep.c: Use string.h, not gdb_string.h.
	* amd64-nat.c: Use string.h, not gdb_string.h.
	* amd64-sol2-tdep.c: Use string.h, not gdb_string.h.
	* amd64fbsd-tdep.c: Use string.h, not gdb_string.h.
	* amd64obsd-tdep.c: Use string.h, not gdb_string.h.
	* arch-utils.c: Use string.h, not gdb_string.h.
	* arm-linux-nat.c: Use string.h, not gdb_string.h.
	* arm-linux-tdep.c: Use string.h, not gdb_string.h.
	* arm-tdep.c: Use string.h, not gdb_string.h.
	* arm-wince-tdep.c: Use string.h, not gdb_string.h.
	* armbsd-tdep.c: Use string.h, not gdb_string.h.
	* armnbsd-nat.c: Use string.h, not gdb_string.h.
	* armnbsd-tdep.c: Use string.h, not gdb_string.h.
	* armobsd-tdep.c: Use string.h, not gdb_string.h.
	* avr-tdep.c: Use string.h, not gdb_string.h.
	* ax-gdb.c: Use string.h, not gdb_string.h.
	* ax-general.c: Use string.h, not gdb_string.h.
	* bcache.c: Use string.h, not gdb_string.h.
	* bfin-tdep.c: Use string.h, not gdb_string.h.
	* breakpoint.c: Use string.h, not gdb_string.h.
	* build-id.c: Use string.h, not gdb_string.h.
	* buildsym.c: Use string.h, not gdb_string.h.
	* c-exp.y: Use string.h, not gdb_string.h.
	* c-lang.c: Use string.h, not gdb_string.h.
	* c-typeprint.c: Use string.h, not gdb_string.h.
	* c-valprint.c: Use string.h, not gdb_string.h.
	* charset.c: Use string.h, not gdb_string.h.
	* cli-out.c: Use string.h, not gdb_string.h.
	* cli/cli-cmds.c: Use string.h, not gdb_string.h.
	* cli/cli-decode.c: Use string.h, not gdb_string.h.
	* cli/cli-dump.c: Use string.h, not gdb_string.h.
	* cli/cli-interp.c: Use string.h, not gdb_string.h.
	* cli/cli-logging.c: Use string.h, not gdb_string.h.
	* cli/cli-script.c: Use string.h, not gdb_string.h.
	* cli/cli-setshow.c: Use string.h, not gdb_string.h.
	* cli/cli-utils.c: Use string.h, not gdb_string.h.
	* coffread.c: Use string.h, not gdb_string.h.
	* common/common-utils.c: Use string.h, not gdb_string.h.
	* common/filestuff.c: Use string.h, not gdb_string.h.
	* common/linux-procfs.c: Use string.h, not gdb_string.h.
	* common/linux-ptrace.c: Use string.h, not gdb_string.h.
	* common/signals.c: Use string.h, not gdb_string.h.
	* common/vec.h: Use string.h, not gdb_string.h.
	* core-regset.c: Use string.h, not gdb_string.h.
	* corefile.c: Use string.h, not gdb_string.h.
	* corelow.c: Use string.h, not gdb_string.h.
	* cp-abi.c: Use string.h, not gdb_string.h.
	* cp-support.c: Use string.h, not gdb_string.h.
	* cp-valprint.c: Use string.h, not gdb_string.h.
	* cris-tdep.c: Use string.h, not gdb_string.h.
	* d-lang.c: Use string.h, not gdb_string.h.
	* dbxread.c: Use string.h, not gdb_string.h.
	* dcache.c: Use string.h, not gdb_string.h.
	* demangle.c: Use string.h, not gdb_string.h.
	* dicos-tdep.c: Use string.h, not gdb_string.h.
	* disasm.c: Use string.h, not gdb_string.h.
	* doublest.c: Use string.h, not gdb_string.h.
	* dsrec.c: Use string.h, not gdb_string.h.
	* dummy-frame.c: Use string.h, not gdb_string.h.
	* dwarf2-frame.c: Use string.h, not gdb_string.h.
	* dwarf2loc.c: Use string.h, not gdb_string.h.
	* dwarf2read.c: Use string.h, not gdb_string.h.
	* elfread.c: Use string.h, not gdb_string.h.
	* environ.c: Use string.h, not gdb_string.h.
	* eval.c: Use string.h, not gdb_string.h.
	* event-loop.c: Use string.h, not gdb_string.h.
	* exceptions.c: Use string.h, not gdb_string.h.
	* exec.c: Use string.h, not gdb_string.h.
	* expprint.c: Use string.h, not gdb_string.h.
	* f-exp.y: Use string.h, not gdb_string.h.
	* f-lang.c: Use string.h, not gdb_string.h.
	* f-typeprint.c: Use string.h, not gdb_string.h.
	* f-valprint.c: Use string.h, not gdb_string.h.
	* fbsd-nat.c: Use string.h, not gdb_string.h.
	* findcmd.c: Use string.h, not gdb_string.h.
	* findvar.c: Use string.h, not gdb_string.h.
	* fork-child.c: Use string.h, not gdb_string.h.
	* frame.c: Use string.h, not gdb_string.h.
	* frv-linux-tdep.c: Use string.h, not gdb_string.h.
	* frv-tdep.c: Use string.h, not gdb_string.h.
	* gdb.c: Use string.h, not gdb_string.h.
	* gdb_bfd.c: Use string.h, not gdb_string.h.
	* gdbarch.c: Use string.h, not gdb_string.h.
	* gdbtypes.c: Use string.h, not gdb_string.h.
	* gnu-nat.c: Use string.h, not gdb_string.h.
	* gnu-v2-abi.c: Use string.h, not gdb_string.h.
	* gnu-v3-abi.c: Use string.h, not gdb_string.h.
	* go-exp.y: Use string.h, not gdb_string.h.
	* go-lang.c: Use string.h, not gdb_string.h.
	* go32-nat.c: Use string.h, not gdb_string.h.
	* hppa-hpux-tdep.c: Use string.h, not gdb_string.h.
	* hppa-linux-nat.c: Use string.h, not gdb_string.h.
	* hppanbsd-tdep.c: Use string.h, not gdb_string.h.
	* hppaobsd-tdep.c: Use string.h, not gdb_string.h.
	* i386-cygwin-tdep.c: Use string.h, not gdb_string.h.
	* i386-dicos-tdep.c: Use string.h, not gdb_string.h.
	* i386-linux-nat.c: Use string.h, not gdb_string.h.
	* i386-linux-tdep.c: Use string.h, not gdb_string.h.
	* i386-nto-tdep.c: Use string.h, not gdb_string.h.
	* i386-sol2-tdep.c: Use string.h, not gdb_string.h.
	* i386-tdep.c: Use string.h, not gdb_string.h.
	* i386bsd-tdep.c: Use string.h, not gdb_string.h.
	* i386gnu-nat.c: Use string.h, not gdb_string.h.
	* i386nbsd-tdep.c: Use string.h, not gdb_string.h.
	* i386obsd-tdep.c: Use string.h, not gdb_string.h.
	* i387-tdep.c: Use string.h, not gdb_string.h.
	* ia64-libunwind-tdep.c: Use string.h, not gdb_string.h.
	* ia64-linux-nat.c: Use string.h, not gdb_string.h.
	* inf-child.c: Use string.h, not gdb_string.h.
	* inf-ptrace.c: Use string.h, not gdb_string.h.
	* inf-ttrace.c: Use string.h, not gdb_string.h.
	* infcall.c: Use string.h, not gdb_string.h.
	* infcmd.c: Use string.h, not gdb_string.h.
	* inflow.c: Use string.h, not gdb_string.h.
	* infrun.c: Use string.h, not gdb_string.h.
	* interps.c: Use string.h, not gdb_string.h.
	* iq2000-tdep.c: Use string.h, not gdb_string.h.
	* irix5-nat.c: Use string.h, not gdb_string.h.
	* jv-exp.y: Use string.h, not gdb_string.h.
	* jv-lang.c: Use string.h, not gdb_string.h.
	* jv-typeprint.c: Use string.h, not gdb_string.h.
	* jv-valprint.c: Use string.h, not gdb_string.h.
	* language.c: Use string.h, not gdb_string.h.
	* linux-fork.c: Use string.h, not gdb_string.h.
	* linux-nat.c: Use string.h, not gdb_string.h.
	* lm32-tdep.c: Use string.h, not gdb_string.h.
	* m2-exp.y: Use string.h, not gdb_string.h.
	* m2-typeprint.c: Use string.h, not gdb_string.h.
	* m32c-tdep.c: Use string.h, not gdb_string.h.
	* m32r-linux-nat.c: Use string.h, not gdb_string.h.
	* m32r-linux-tdep.c: Use string.h, not gdb_string.h.
	* m32r-rom.c: Use string.h, not gdb_string.h.
	* m32r-tdep.c: Use string.h, not gdb_string.h.
	* m68hc11-tdep.c: Use string.h, not gdb_string.h.
	* m68k-tdep.c: Use string.h, not gdb_string.h.
	* m68kbsd-tdep.c: Use string.h, not gdb_string.h.
	* m68klinux-nat.c: Use string.h, not gdb_string.h.
	* m68klinux-tdep.c: Use string.h, not gdb_string.h.
	* m88k-tdep.c: Use string.h, not gdb_string.h.
	* macrocmd.c: Use string.h, not gdb_string.h.
	* main.c: Use string.h, not gdb_string.h.
	* mdebugread.c: Use string.h, not gdb_string.h.
	* mem-break.c: Use string.h, not gdb_string.h.
	* memattr.c: Use string.h, not gdb_string.h.
	* memory-map.c: Use string.h, not gdb_string.h.
	* mep-tdep.c: Use string.h, not gdb_string.h.
	* mi/mi-cmd-break.c: Use string.h, not gdb_string.h.
	* mi/mi-cmd-disas.c: Use string.h, not gdb_string.h.
	* mi/mi-cmd-env.c: Use string.h, not gdb_string.h.
	* mi/mi-cmd-stack.c: Use string.h, not gdb_string.h.
	* mi/mi-cmd-var.c: Use string.h, not gdb_string.h.
	* mi/mi-cmds.c: Use string.h, not gdb_string.h.
	* mi/mi-console.c: Use string.h, not gdb_string.h.
	* mi/mi-getopt.c: Use string.h, not gdb_string.h.
	* mi/mi-interp.c: Use string.h, not gdb_string.h.
	* mi/mi-main.c: Use string.h, not gdb_string.h.
	* mi/mi-parse.c: Use string.h, not gdb_string.h.
	* microblaze-rom.c: Use string.h, not gdb_string.h.
	* microblaze-tdep.c: Use string.h, not gdb_string.h.
	* mingw-hdep.c: Use string.h, not gdb_string.h.
	* minidebug.c: Use string.h, not gdb_string.h.
	* minsyms.c: Use string.h, not gdb_string.h.
	* mips-irix-tdep.c: Use string.h, not gdb_string.h.
	* mips-linux-tdep.c: Use string.h, not gdb_string.h.
	* mips-tdep.c: Use string.h, not gdb_string.h.
	* mips64obsd-tdep.c: Use string.h, not gdb_string.h.
	* mipsnbsd-tdep.c: Use string.h, not gdb_string.h.
	* mipsread.c: Use string.h, not gdb_string.h.
	* mn10300-linux-tdep.c: Use string.h, not gdb_string.h.
	* mn10300-tdep.c: Use string.h, not gdb_string.h.
	* monitor.c: Use string.h, not gdb_string.h.
	* moxie-tdep.c: Use string.h, not gdb_string.h.
	* mt-tdep.c: Use string.h, not gdb_string.h.
	* nbsd-tdep.c: Use string.h, not gdb_string.h.
	* nios2-linux-tdep.c: Use string.h, not gdb_string.h.
	* nto-procfs.c: Use string.h, not gdb_string.h.
	* nto-tdep.c: Use string.h, not gdb_string.h.
	* objc-lang.c: Use string.h, not gdb_string.h.
	* objfiles.c: Use string.h, not gdb_string.h.
	* opencl-lang.c: Use string.h, not gdb_string.h.
	* osabi.c: Use string.h, not gdb_string.h.
	* osdata.c: Use string.h, not gdb_string.h.
	* p-exp.y: Use string.h, not gdb_string.h.
	* p-lang.c: Use string.h, not gdb_string.h.
	* p-typeprint.c: Use string.h, not gdb_string.h.
	* parse.c: Use string.h, not gdb_string.h.
	* posix-hdep.c: Use string.h, not gdb_string.h.
	* ppc-linux-nat.c: Use string.h, not gdb_string.h.
	* ppc-sysv-tdep.c: Use string.h, not gdb_string.h.
	* ppcfbsd-tdep.c: Use string.h, not gdb_string.h.
	* ppcnbsd-tdep.c: Use string.h, not gdb_string.h.
	* ppcobsd-tdep.c: Use string.h, not gdb_string.h.
	* printcmd.c: Use string.h, not gdb_string.h.
	* procfs.c: Use string.h, not gdb_string.h.
	* prologue-value.c: Use string.h, not gdb_string.h.
	* python/py-auto-load.c: Use string.h, not gdb_string.h.
	* python/py-gdb-readline.c: Use string.h, not gdb_string.h.
	* ravenscar-thread.c: Use string.h, not gdb_string.h.
	* regcache.c: Use string.h, not gdb_string.h.
	* registry.c: Use string.h, not gdb_string.h.
	* remote-fileio.c: Use string.h, not gdb_string.h.
	* remote-m32r-sdi.c: Use string.h, not gdb_string.h.
	* remote-mips.c: Use string.h, not gdb_string.h.
	* remote-sim.c: Use string.h, not gdb_string.h.
	* remote.c: Use string.h, not gdb_string.h.
	* reverse.c: Use string.h, not gdb_string.h.
	* rs6000-aix-tdep.c: Use string.h, not gdb_string.h.
	* ser-base.c: Use string.h, not gdb_string.h.
	* ser-go32.c: Use string.h, not gdb_string.h.
	* ser-mingw.c: Use string.h, not gdb_string.h.
	* ser-pipe.c: Use string.h, not gdb_string.h.
	* ser-tcp.c: Use string.h, not gdb_string.h.
	* ser-unix.c: Use string.h, not gdb_string.h.
	* serial.c: Use string.h, not gdb_string.h.
	* sh-tdep.c: Use string.h, not gdb_string.h.
	* sh64-tdep.c: Use string.h, not gdb_string.h.
	* shnbsd-tdep.c: Use string.h, not gdb_string.h.
	* skip.c: Use string.h, not gdb_string.h.
	* sol-thread.c: Use string.h, not gdb_string.h.
	* solib-dsbt.c: Use string.h, not gdb_string.h.
	* solib-frv.c: Use string.h, not gdb_string.h.
	* solib-osf.c: Use string.h, not gdb_string.h.
	* solib-spu.c: Use string.h, not gdb_string.h.
	* solib-target.c: Use string.h, not gdb_string.h.
	* solib.c: Use string.h, not gdb_string.h.
	* somread.c: Use string.h, not gdb_string.h.
	* source.c: Use string.h, not gdb_string.h.
	* sparc-nat.c: Use string.h, not gdb_string.h.
	* sparc-sol2-tdep.c: Use string.h, not gdb_string.h.
	* sparc-tdep.c: Use string.h, not gdb_string.h.
	* sparc64-tdep.c: Use string.h, not gdb_string.h.
	* sparc64fbsd-tdep.c: Use string.h, not gdb_string.h.
	* sparc64nbsd-tdep.c: Use string.h, not gdb_string.h.
	* sparcnbsd-tdep.c: Use string.h, not gdb_string.h.
	* spu-linux-nat.c: Use string.h, not gdb_string.h.
	* spu-multiarch.c: Use string.h, not gdb_string.h.
	* spu-tdep.c: Use string.h, not gdb_string.h.
	* stabsread.c: Use string.h, not gdb_string.h.
	* stack.c: Use string.h, not gdb_string.h.
	* std-regs.c: Use string.h, not gdb_string.h.
	* symfile.c: Use string.h, not gdb_string.h.
	* symmisc.c: Use string.h, not gdb_string.h.
	* symtab.c: Use string.h, not gdb_string.h.
	* target.c: Use string.h, not gdb_string.h.
	* thread.c: Use string.h, not gdb_string.h.
	* tilegx-linux-nat.c: Use string.h, not gdb_string.h.
	* tilegx-tdep.c: Use string.h, not gdb_string.h.
	* top.c: Use string.h, not gdb_string.h.
	* tracepoint.c: Use string.h, not gdb_string.h.
	* tui/tui-command.c: Use string.h, not gdb_string.h.
	* tui/tui-data.c: Use string.h, not gdb_string.h.
	* tui/tui-disasm.c: Use string.h, not gdb_string.h.
	* tui/tui-file.c: Use string.h, not gdb_string.h.
	* tui/tui-layout.c: Use string.h, not gdb_string.h.
	* tui/tui-out.c: Use string.h, not gdb_string.h.
	* tui/tui-regs.c: Use string.h, not gdb_string.h.
	* tui/tui-source.c: Use string.h, not gdb_string.h.
	* tui/tui-stack.c: Use string.h, not gdb_string.h.
	* tui/tui-win.c: Use string.h, not gdb_string.h.
	* tui/tui-windata.c: Use string.h, not gdb_string.h.
	* tui/tui-winsource.c: Use string.h, not gdb_string.h.
	* typeprint.c: Use string.h, not gdb_string.h.
	* ui-file.c: Use string.h, not gdb_string.h.
	* ui-out.c: Use string.h, not gdb_string.h.
	* user-regs.c: Use string.h, not gdb_string.h.
	* utils.c: Use string.h, not gdb_string.h.
	* v850-tdep.c: Use string.h, not gdb_string.h.
	* valarith.c: Use string.h, not gdb_string.h.
	* valops.c: Use string.h, not gdb_string.h.
	* valprint.c: Use string.h, not gdb_string.h.
	* value.c: Use string.h, not gdb_string.h.
	* varobj.c: Use string.h, not gdb_string.h.
	* vax-tdep.c: Use string.h, not gdb_string.h.
	* vaxnbsd-tdep.c: Use string.h, not gdb_string.h.
	* vaxobsd-tdep.c: Use string.h, not gdb_string.h.
	* windows-nat.c: Use string.h, not gdb_string.h.
	* xcoffread.c: Use string.h, not gdb_string.h.
	* xml-support.c: Use string.h, not gdb_string.h.
	* xstormy16-tdep.c: Use string.h, not gdb_string.h.
	* xtensa-linux-nat.c: Use string.h, not gdb_string.h.
2013-11-18 13:29:00 -07:00

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/* Definitions for BFD wrappers used by GDB.
Copyright (C) 2011-2013 Free Software Foundation, Inc.
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 3 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, see <http://www.gnu.org/licenses/>. */
#include "defs.h"
#include "gdb_bfd.h"
#include "gdb_assert.h"
#include <string.h>
#include "ui-out.h"
#include "gdbcmd.h"
#include "hashtab.h"
#include "filestuff.h"
#ifdef HAVE_ZLIB_H
#include <zlib.h>
#endif
#ifdef HAVE_MMAP
#include <sys/mman.h>
#ifndef MAP_FAILED
#define MAP_FAILED ((void *) -1)
#endif
#endif
/* An object of this type is stored in the section's user data when
mapping a section. */
struct gdb_bfd_section_data
{
/* Size of the data. */
bfd_size_type size;
/* If the data was mmapped, this is the length of the map. */
bfd_size_type map_len;
/* The data. If NULL, the section data has not been read. */
void *data;
/* If the data was mmapped, this is the map address. */
void *map_addr;
};
/* A hash table holding every BFD that gdb knows about. This is not
to be confused with 'gdb_bfd_cache', which is used for sharing
BFDs; in contrast, this hash is used just to implement
"maint info bfd". */
static htab_t all_bfds;
/* See gdb_bfd.h. */
void
gdb_bfd_stash_filename (struct bfd *abfd)
{
char *name = bfd_get_filename (abfd);
char *data;
data = bfd_alloc (abfd, strlen (name) + 1);
strcpy (data, name);
/* Unwarranted chumminess with BFD. */
abfd->filename = data;
}
/* An object of this type is stored in each BFD's user data. */
struct gdb_bfd_data
{
/* The reference count. */
int refc;
/* The mtime of the BFD at the point the cache entry was made. */
time_t mtime;
/* This is true if we have determined whether this BFD has any
sections requiring relocation. */
unsigned int relocation_computed : 1;
/* This is true if any section needs relocation. */
unsigned int needs_relocations : 1;
/* This is true if we have successfully computed the file's CRC. */
unsigned int crc_computed : 1;
/* The file's CRC. */
unsigned long crc;
/* If the BFD comes from an archive, this points to the archive's
BFD. Otherwise, this is NULL. */
bfd *archive_bfd;
/* The registry. */
REGISTRY_FIELDS;
};
#define GDB_BFD_DATA_ACCESSOR(ABFD) \
((struct gdb_bfd_data *) bfd_usrdata (ABFD))
DEFINE_REGISTRY (bfd, GDB_BFD_DATA_ACCESSOR)
/* A hash table storing all the BFDs maintained in the cache. */
static htab_t gdb_bfd_cache;
/* The type of an object being looked up in gdb_bfd_cache. We use
htab's capability of storing one kind of object (BFD in this case)
and using a different sort of object for searching. */
struct gdb_bfd_cache_search
{
/* The filename. */
const char *filename;
/* The mtime. */
time_t mtime;
};
/* A hash function for BFDs. */
static hashval_t
hash_bfd (const void *b)
{
const bfd *abfd = b;
/* It is simplest to just hash the filename. */
return htab_hash_string (bfd_get_filename (abfd));
}
/* An equality function for BFDs. Note that this expects the caller
to search using struct gdb_bfd_cache_search only, not BFDs. */
static int
eq_bfd (const void *a, const void *b)
{
const bfd *abfd = a;
const struct gdb_bfd_cache_search *s = b;
struct gdb_bfd_data *gdata = bfd_usrdata (abfd);
return (gdata->mtime == s->mtime
&& strcmp (bfd_get_filename (abfd), s->filename) == 0);
}
/* See gdb_bfd.h. */
struct bfd *
gdb_bfd_open (const char *name, const char *target, int fd)
{
hashval_t hash;
void **slot;
bfd *abfd;
struct gdb_bfd_cache_search search;
struct stat st;
if (gdb_bfd_cache == NULL)
gdb_bfd_cache = htab_create_alloc (1, hash_bfd, eq_bfd, NULL,
xcalloc, xfree);
if (fd == -1)
{
fd = gdb_open_cloexec (name, O_RDONLY | O_BINARY, 0);
if (fd == -1)
{
bfd_set_error (bfd_error_system_call);
return NULL;
}
}
search.filename = name;
if (fstat (fd, &st) < 0)
{
/* Weird situation here. */
search.mtime = 0;
}
else
search.mtime = st.st_mtime;
/* Note that this must compute the same result as hash_bfd. */
hash = htab_hash_string (name);
/* Note that we cannot use htab_find_slot_with_hash here, because
opening the BFD may fail; and this would violate hashtab
invariants. */
abfd = htab_find_with_hash (gdb_bfd_cache, &search, hash);
if (abfd != NULL)
{
close (fd);
gdb_bfd_ref (abfd);
return abfd;
}
abfd = bfd_fopen (name, target, FOPEN_RB, fd);
if (abfd == NULL)
return NULL;
slot = htab_find_slot_with_hash (gdb_bfd_cache, &search, hash, INSERT);
gdb_assert (!*slot);
*slot = abfd;
gdb_bfd_stash_filename (abfd);
gdb_bfd_ref (abfd);
return abfd;
}
/* A helper function that releases any section data attached to the
BFD. */
static void
free_one_bfd_section (bfd *abfd, asection *sectp, void *ignore)
{
struct gdb_bfd_section_data *sect = bfd_get_section_userdata (abfd, sectp);
if (sect != NULL && sect->data != NULL)
{
#ifdef HAVE_MMAP
if (sect->map_addr != NULL)
{
int res;
res = munmap (sect->map_addr, sect->map_len);
gdb_assert (res == 0);
}
else
#endif
xfree (sect->data);
}
}
/* Close ABFD, and warn if that fails. */
static int
gdb_bfd_close_or_warn (struct bfd *abfd)
{
int ret;
char *name = bfd_get_filename (abfd);
bfd_map_over_sections (abfd, free_one_bfd_section, NULL);
ret = bfd_close (abfd);
if (!ret)
warning (_("cannot close \"%s\": %s"),
name, bfd_errmsg (bfd_get_error ()));
return ret;
}
/* See gdb_bfd.h. */
void
gdb_bfd_ref (struct bfd *abfd)
{
struct gdb_bfd_data *gdata;
void **slot;
if (abfd == NULL)
return;
gdata = bfd_usrdata (abfd);
if (gdata != NULL)
{
gdata->refc += 1;
return;
}
/* Ask BFD to decompress sections in bfd_get_full_section_contents. */
abfd->flags |= BFD_DECOMPRESS;
gdata = bfd_zalloc (abfd, sizeof (struct gdb_bfd_data));
gdata->refc = 1;
gdata->mtime = bfd_get_mtime (abfd);
gdata->archive_bfd = NULL;
bfd_usrdata (abfd) = gdata;
bfd_alloc_data (abfd);
/* This is the first we've seen it, so add it to the hash table. */
slot = htab_find_slot (all_bfds, abfd, INSERT);
gdb_assert (slot && !*slot);
*slot = abfd;
}
/* See gdb_bfd.h. */
void
gdb_bfd_unref (struct bfd *abfd)
{
struct gdb_bfd_data *gdata;
struct gdb_bfd_cache_search search;
bfd *archive_bfd;
if (abfd == NULL)
return;
gdata = bfd_usrdata (abfd);
gdb_assert (gdata->refc >= 1);
gdata->refc -= 1;
if (gdata->refc > 0)
return;
archive_bfd = gdata->archive_bfd;
search.filename = bfd_get_filename (abfd);
if (gdb_bfd_cache && search.filename)
{
hashval_t hash = htab_hash_string (search.filename);
void **slot;
search.mtime = gdata->mtime;
slot = htab_find_slot_with_hash (gdb_bfd_cache, &search, hash,
NO_INSERT);
if (slot && *slot)
htab_clear_slot (gdb_bfd_cache, slot);
}
bfd_free_data (abfd);
bfd_usrdata (abfd) = NULL; /* Paranoia. */
htab_remove_elt (all_bfds, abfd);
gdb_bfd_close_or_warn (abfd);
gdb_bfd_unref (archive_bfd);
}
/* A helper function that returns the section data descriptor
associated with SECTION. If no such descriptor exists, a new one
is allocated and cleared. */
static struct gdb_bfd_section_data *
get_section_descriptor (asection *section)
{
struct gdb_bfd_section_data *result;
result = bfd_get_section_userdata (section->owner, section);
if (result == NULL)
{
result = bfd_zalloc (section->owner, sizeof (*result));
bfd_set_section_userdata (section->owner, section, result);
}
return result;
}
/* See gdb_bfd.h. */
const gdb_byte *
gdb_bfd_map_section (asection *sectp, bfd_size_type *size)
{
bfd *abfd;
struct gdb_bfd_section_data *descriptor;
bfd_byte *data;
gdb_assert ((sectp->flags & SEC_RELOC) == 0);
gdb_assert (size != NULL);
abfd = sectp->owner;
descriptor = get_section_descriptor (sectp);
/* If the data was already read for this BFD, just reuse it. */
if (descriptor->data != NULL)
goto done;
#ifdef HAVE_MMAP
if (!bfd_is_section_compressed (abfd, sectp))
{
/* The page size, used when mmapping. */
static int pagesize;
if (pagesize == 0)
pagesize = getpagesize ();
/* Only try to mmap sections which are large enough: we don't want
to waste space due to fragmentation. */
if (bfd_get_section_size (sectp) > 4 * pagesize)
{
descriptor->size = bfd_get_section_size (sectp);
descriptor->data = bfd_mmap (abfd, 0, descriptor->size, PROT_READ,
MAP_PRIVATE, sectp->filepos,
&descriptor->map_addr,
&descriptor->map_len);
if ((caddr_t)descriptor->data != MAP_FAILED)
{
#if HAVE_POSIX_MADVISE
posix_madvise (descriptor->map_addr, descriptor->map_len,
POSIX_MADV_WILLNEED);
#endif
goto done;
}
/* On failure, clear out the section data and try again. */
memset (descriptor, 0, sizeof (*descriptor));
}
}
#endif /* HAVE_MMAP */
/* Handle compressed sections, or ordinary uncompressed sections in
the no-mmap case. */
descriptor->size = bfd_get_section_size (sectp);
descriptor->data = NULL;
data = NULL;
if (!bfd_get_full_section_contents (abfd, sectp, &data))
error (_("Can't read data for section '%s' in file '%s'"),
bfd_get_section_name (abfd, sectp),
bfd_get_filename (abfd));
descriptor->data = data;
done:
gdb_assert (descriptor->data != NULL);
*size = descriptor->size;
return descriptor->data;
}
/* Return 32-bit CRC for ABFD. If successful store it to *FILE_CRC_RETURN and
return 1. Otherwise print a warning and return 0. ABFD seek position is
not preserved. */
static int
get_file_crc (bfd *abfd, unsigned long *file_crc_return)
{
unsigned long file_crc = 0;
if (bfd_seek (abfd, 0, SEEK_SET) != 0)
{
warning (_("Problem reading \"%s\" for CRC: %s"),
bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ()));
return 0;
}
for (;;)
{
gdb_byte buffer[8 * 1024];
bfd_size_type count;
count = bfd_bread (buffer, sizeof (buffer), abfd);
if (count == (bfd_size_type) -1)
{
warning (_("Problem reading \"%s\" for CRC: %s"),
bfd_get_filename (abfd), bfd_errmsg (bfd_get_error ()));
return 0;
}
if (count == 0)
break;
file_crc = bfd_calc_gnu_debuglink_crc32 (file_crc, buffer, count);
}
*file_crc_return = file_crc;
return 1;
}
/* See gdb_bfd.h. */
int
gdb_bfd_crc (struct bfd *abfd, unsigned long *crc_out)
{
struct gdb_bfd_data *gdata = bfd_usrdata (abfd);
if (!gdata->crc_computed)
gdata->crc_computed = get_file_crc (abfd, &gdata->crc);
if (gdata->crc_computed)
*crc_out = gdata->crc;
return gdata->crc_computed;
}
/* See gdb_bfd.h. */
bfd *
gdb_bfd_fopen (const char *filename, const char *target, const char *mode,
int fd)
{
bfd *result = bfd_fopen (filename, target, mode, fd);
if (result)
{
gdb_bfd_stash_filename (result);
gdb_bfd_ref (result);
}
return result;
}
/* See gdb_bfd.h. */
bfd *
gdb_bfd_openr (const char *filename, const char *target)
{
bfd *result = bfd_openr (filename, target);
if (result)
{
gdb_bfd_stash_filename (result);
gdb_bfd_ref (result);
}
return result;
}
/* See gdb_bfd.h. */
bfd *
gdb_bfd_openw (const char *filename, const char *target)
{
bfd *result = bfd_openw (filename, target);
if (result)
{
gdb_bfd_stash_filename (result);
gdb_bfd_ref (result);
}
return result;
}
/* See gdb_bfd.h. */
bfd *
gdb_bfd_openr_iovec (const char *filename, const char *target,
void *(*open_func) (struct bfd *nbfd,
void *open_closure),
void *open_closure,
file_ptr (*pread_func) (struct bfd *nbfd,
void *stream,
void *buf,
file_ptr nbytes,
file_ptr offset),
int (*close_func) (struct bfd *nbfd,
void *stream),
int (*stat_func) (struct bfd *abfd,
void *stream,
struct stat *sb))
{
bfd *result = bfd_openr_iovec (filename, target,
open_func, open_closure,
pread_func, close_func, stat_func);
if (result)
{
gdb_bfd_ref (result);
gdb_bfd_stash_filename (result);
}
return result;
}
/* See gdb_bfd.h. */
void
gdb_bfd_mark_parent (bfd *child, bfd *parent)
{
struct gdb_bfd_data *gdata;
gdb_bfd_ref (child);
/* No need to stash the filename here, because we also keep a
reference on the parent archive. */
gdata = bfd_usrdata (child);
if (gdata->archive_bfd == NULL)
{
gdata->archive_bfd = parent;
gdb_bfd_ref (parent);
}
else
gdb_assert (gdata->archive_bfd == parent);
}
/* See gdb_bfd.h. */
bfd *
gdb_bfd_openr_next_archived_file (bfd *archive, bfd *previous)
{
bfd *result = bfd_openr_next_archived_file (archive, previous);
if (result)
gdb_bfd_mark_parent (result, archive);
return result;
}
/* See gdb_bfd.h. */
bfd *
gdb_bfd_fdopenr (const char *filename, const char *target, int fd)
{
bfd *result = bfd_fdopenr (filename, target, fd);
if (result)
{
gdb_bfd_ref (result);
gdb_bfd_stash_filename (result);
}
return result;
}
gdb_static_assert (ARRAY_SIZE (_bfd_std_section) == 4);
/* See gdb_bfd.h. */
int
gdb_bfd_section_index (bfd *abfd, asection *section)
{
if (section == NULL)
return -1;
else if (section == bfd_com_section_ptr)
return bfd_count_sections (abfd) + 1;
else if (section == bfd_und_section_ptr)
return bfd_count_sections (abfd) + 2;
else if (section == bfd_abs_section_ptr)
return bfd_count_sections (abfd) + 3;
else if (section == bfd_ind_section_ptr)
return bfd_count_sections (abfd) + 4;
return section->index;
}
/* See gdb_bfd.h. */
int
gdb_bfd_count_sections (bfd *abfd)
{
return bfd_count_sections (abfd) + 4;
}
/* See gdb_bfd.h. */
int
gdb_bfd_requires_relocations (bfd *abfd)
{
struct gdb_bfd_data *gdata = bfd_usrdata (abfd);
if (gdata->relocation_computed == 0)
{
asection *sect;
for (sect = abfd->sections; sect != NULL; sect = sect->next)
if ((sect->flags & SEC_RELOC) != 0)
{
gdata->needs_relocations = 1;
break;
}
gdata->relocation_computed = 1;
}
return gdata->needs_relocations;
}
/* A callback for htab_traverse that prints a single BFD. */
static int
print_one_bfd (void **slot, void *data)
{
bfd *abfd = *slot;
struct gdb_bfd_data *gdata = bfd_usrdata (abfd);
struct ui_out *uiout = data;
struct cleanup *inner;
inner = make_cleanup_ui_out_tuple_begin_end (uiout, NULL);
ui_out_field_int (uiout, "refcount", gdata->refc);
ui_out_field_string (uiout, "addr", host_address_to_string (abfd));
ui_out_field_string (uiout, "filename", bfd_get_filename (abfd));
ui_out_text (uiout, "\n");
do_cleanups (inner);
return 1;
}
/* Implement the 'maint info bfd' command. */
static void
maintenance_info_bfds (char *arg, int from_tty)
{
struct cleanup *cleanup;
struct ui_out *uiout = current_uiout;
cleanup = make_cleanup_ui_out_table_begin_end (uiout, 3, -1, "bfds");
ui_out_table_header (uiout, 10, ui_left, "refcount", "Refcount");
ui_out_table_header (uiout, 18, ui_left, "addr", "Address");
ui_out_table_header (uiout, 40, ui_left, "filename", "Filename");
ui_out_table_body (uiout);
htab_traverse (all_bfds, print_one_bfd, uiout);
do_cleanups (cleanup);
}
/* -Wmissing-prototypes */
extern initialize_file_ftype _initialize_gdb_bfd;
void
_initialize_gdb_bfd (void)
{
all_bfds = htab_create_alloc (10, htab_hash_pointer, htab_eq_pointer,
NULL, xcalloc, xfree);
add_cmd ("bfds", class_maintenance, maintenance_info_bfds, _("\
List the BFDs that are currently open."),
&maintenanceinfolist);
}
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