mirror of
https://sourceware.org/git/binutils-gdb.git
synced 2024-11-27 03:51:15 +08:00
9ba56acee5
There are many linker input files in LLVM debug build with huge string sections. All these string sections can be treated as read-only. But linker copies all of them into memory which consumes huge amount of memory and slows down linker significantly. Add _bfd_mmap_readonly_persistent and _bfd_mmap_readonly_temporary to mmap in reado-only sections with size >= 4 * page size. NB: All string sections in valid ELF inputs must be null terminated. There is no need to terminate it again and string sections are mmapped as read-only. * bfd.c (bfd_mmapped_entry): New. (bfd_mmapped): Likewise. (bfd): Add mmapped. * bfdwin.c (bfd_get_file_window): Use _bfd_pagesize. * cache.c (cache_bmmap): Remove pagesize_m1 and use pagesize_m1 instead. * elf.c (bfd_elf_get_str_section): Call _bfd_mmap_readonly_persistent instead of _bfd_alloc_and_read. Don't terminate the string section again. (get_hash_table_data): Call _bfd_mmap_readonly_temporary and _bfd_munmap_readonly_temporary instead of _bfd_malloc_and_read and free. (_bfd_elf_get_dynamic_symbols): Call _bfd_mmap_readonly_persistent instead of _bfd_alloc_and_read. Don't terminate the string section again. Call _bfd_mmap_readonly_temporary and _bfd_munmap_readonly_temporary instead of _bfd_malloc_and_read and free. (_bfd_elf_slurp_version_tables): Call _bfd_mmap_readonly_temporary and _bfd_munmap_readonly_temporary instead of _bfd_malloc_and_read and free. * elflink.c (bfd_elf_link_record_dynamic_symbol): Use bfd_malloc to get the unversioned symbol. * libbfd-in.h (_bfd_pagesize): New. (_bfd_pagesize_m1): Likewise. (_bfd_minimum_mmap_size): Likewise. (_bfd_mmap_readonly_persistent): Likewise. (_bfd_mmap_readonly_temporary): Likewise. (_bfd_munmap_readonly_temporary): Likewise. * libbfd.c (bfd_allocate_mmapped_page): New. (_bfd_mmap_readonly_temporary): Likewise. (_bfd_munmap_readonly_temporary): Likewise. (_bfd_mmap_readonly_persistent): Likewise. (_bfd_pagesize): Likewise. (_bfd_pagesize_m1): Likewise. (_bfd_minimum_mmap_size): Likewise. (bfd_init_pagesize): Likewise. * lynx-core.c (lynx_core_file_p): Use _bfd_pagesize. * opncls.c (_bfd_delete_bfd): Munmap tracked mmapped memories. * sysdep.h (MAP_ANONYMOUS): New. Define if undefined. * bfd-in2.h: Regenerated. * libbfd.h: Likewise.
209 lines
5.1 KiB
C
209 lines
5.1 KiB
C
/* sysdep.h -- handle host dependencies for the BFD library
|
|
Copyright (C) 1995-2024 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 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, write to the Free Software
|
|
Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
|
|
MA 02110-1301, USA. */
|
|
|
|
#ifndef BFD_SYSDEP_H
|
|
#define BFD_SYSDEP_H
|
|
|
|
#ifdef PACKAGE
|
|
#error sysdep.h must be included in lieu of config.h
|
|
#endif
|
|
|
|
#include "config.h"
|
|
#include <stdio.h>
|
|
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
|
|
#include <stdlib.h>
|
|
#include <stddef.h>
|
|
#include <string.h>
|
|
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
|
|
#include <errno.h>
|
|
#include <time.h>
|
|
|
|
#ifdef HAVE_SYS_RESOURCE_H
|
|
#include <sys/resource.h>
|
|
#endif /* HAVE_SYS_RESOURCE_H */
|
|
|
|
#ifdef USE_BINARY_FOPEN
|
|
#include "fopen-bin.h"
|
|
#else
|
|
#include "fopen-same.h"
|
|
#endif
|
|
|
|
#ifdef HAVE_FCNTL_H
|
|
#include <fcntl.h>
|
|
#else
|
|
#ifdef HAVE_SYS_FILE_H
|
|
#include <sys/file.h>
|
|
#endif
|
|
#endif
|
|
|
|
#ifndef O_RDONLY
|
|
#define O_RDONLY 0
|
|
#endif
|
|
#ifndef O_WRONLY
|
|
#define O_WRONLY 1
|
|
#endif
|
|
#ifndef O_RDWR
|
|
#define O_RDWR 2
|
|
#endif
|
|
#ifndef O_ACCMODE
|
|
#define O_ACCMODE (O_RDONLY | O_WRONLY | O_RDWR)
|
|
#endif
|
|
/* Systems that don't already define this, don't need it. */
|
|
#ifndef O_BINARY
|
|
#define O_BINARY 0
|
|
#endif
|
|
|
|
#ifndef SEEK_SET
|
|
#define SEEK_SET 0
|
|
#endif
|
|
#ifndef SEEK_CUR
|
|
#define SEEK_CUR 1
|
|
#endif
|
|
|
|
#ifdef HAVE_MMAP
|
|
#include <sys/mman.h>
|
|
#endif
|
|
|
|
#ifndef MAP_FILE
|
|
#define MAP_FILE 0
|
|
#endif
|
|
|
|
#ifndef MAP_FAILED
|
|
#define MAP_FAILED ((void *) -1)
|
|
#endif
|
|
|
|
#ifndef MAP_ANONYMOUS
|
|
#define MAP_ANONYMOUS MAP_ANON
|
|
#endif
|
|
|
|
#include "filenames.h"
|
|
|
|
#if !HAVE_DECL_FFS
|
|
extern int ffs (int);
|
|
#endif
|
|
|
|
#if !HAVE_DECL_STPCPY
|
|
extern char *stpcpy (char *__dest, const char *__src);
|
|
#endif
|
|
|
|
#ifdef HAVE_FTELLO
|
|
#if !HAVE_DECL_FTELLO
|
|
extern off_t ftello (FILE *stream);
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef HAVE_FTELLO64
|
|
#if !HAVE_DECL_FTELLO64
|
|
extern off64_t ftello64 (FILE *stream);
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef HAVE_FSEEKO
|
|
#if !HAVE_DECL_FSEEKO
|
|
extern int fseeko (FILE *stream, off_t offset, int whence);
|
|
#endif
|
|
#endif
|
|
|
|
#ifdef HAVE_FSEEKO64
|
|
#if !HAVE_DECL_FSEEKO64
|
|
extern int fseeko64 (FILE *stream, off64_t offset, int whence);
|
|
#endif
|
|
#endif
|
|
|
|
/* Define offsetof for those systems which lack it */
|
|
|
|
#ifndef offsetof
|
|
#define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
|
|
#endif
|
|
|
|
#ifndef ENABLE_NLS
|
|
/* The Solaris version of locale.h always includes libintl.h. If we have
|
|
been configured with --disable-nls then ENABLE_NLS will not be defined
|
|
and the dummy definitions of bindtextdomain (et al) below will conflict
|
|
with the defintions in libintl.h. So we define these values to prevent
|
|
the bogus inclusion of libintl.h. */
|
|
# define _LIBINTL_H
|
|
# define _LIBGETTEXT_H
|
|
#endif
|
|
#include <locale.h>
|
|
|
|
#ifdef ENABLE_NLS
|
|
# include <libintl.h>
|
|
/* Note the redefinition of gettext and ngettext here to use PACKAGE.
|
|
|
|
This is because the code in this directory is used to build a
|
|
library which will be linked with code in other directories to form
|
|
programs. We want to maintain a separate translation file for this
|
|
directory however, rather than being forced to merge it with that
|
|
of any program linked to libbfd. This is a library, so it cannot
|
|
depend on the catalog currently loaded.
|
|
|
|
In order to do this, we have to make sure that when we extract
|
|
messages we use the BFD domain rather than the domain of the
|
|
program that included the bfd library, (eg OBJDUMP). Hence we use
|
|
dgettext (PACKAGE, String) and define PACKAGE to be 'bfd'.
|
|
(See the code in configure). */
|
|
# undef gettext
|
|
# define gettext(Msgid) dgettext (PACKAGE, Msgid)
|
|
# undef ngettext
|
|
# define ngettext(Msgid1, Msgid2, n) dngettext (PACKAGE, Msgid1, Msgid2, n)
|
|
# define _(String) gettext (String)
|
|
# ifdef gettext_noop
|
|
# define N_(String) gettext_noop (String)
|
|
# else
|
|
# define N_(String) (String)
|
|
# endif
|
|
#else
|
|
# define gettext(Msgid) (Msgid)
|
|
# define dgettext(Domainname, Msgid) (Msgid)
|
|
# define dcgettext(Domainname, Msgid, Category) (Msgid)
|
|
# define ngettext(Msgid1, Msgid2, n) \
|
|
(n == 1 ? Msgid1 : Msgid2)
|
|
# define dngettext(Domainname, Msgid1, Msgid2, n) \
|
|
(n == 1 ? Msgid1 : Msgid2)
|
|
# define dcngettext(Domainname, Msgid1, Msgid2, n, Category) \
|
|
(n == 1 ? Msgid1 : Msgid2)
|
|
# define textdomain(Domainname) do {} while (0)
|
|
# define bindtextdomain(Domainname, Dirname) do {} while (0)
|
|
# define _(String) (String)
|
|
# define N_(String) (String)
|
|
#endif
|
|
|
|
#ifndef HAVE_GETUID
|
|
#define getuid() 0
|
|
#endif
|
|
|
|
#ifndef HAVE_GETGID
|
|
#define getgid() 0
|
|
#endif
|
|
|
|
#define POISON_BFD_BOOLEAN 1
|
|
|
|
#endif /* ! defined (BFD_SYSDEP_H) */
|