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LoongArch: Add support for ldconfig.
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caiyinyu
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commit
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@ -1,4 +1,4 @@
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/* Copyright (C) 1999-2023 Free Software Foundation, Inc.
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/* Copyright (C) 2022-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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This program is free software; you can redistribute it and/or modify
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@ -225,6 +225,12 @@ print_entry (const char *lib, int flag, uint64_t hwcap,
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case FLAG_RISCV_FLOAT_ABI_DOUBLE:
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fputs (",double-float", stdout);
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break;
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case FLAG_LARCH_FLOAT_ABI_SOFT:
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fputs (",soft-float", stdout);
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break;
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case FLAG_LARCH_FLOAT_ABI_DOUBLE:
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fputs (",double-float", stdout);
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break;
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case 0:
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break;
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default:
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@ -1,4 +1,4 @@
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/* Copyright (C) 1999-2023 Free Software Foundation, Inc.
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/* Copyright (C) 2022-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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@ -45,6 +45,8 @@
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#define FLAG_MIPS64_LIBN64_NAN2008 0x0e00
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#define FLAG_RISCV_FLOAT_ABI_SOFT 0x0f00
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#define FLAG_RISCV_FLOAT_ABI_DOUBLE 0x1000
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#define FLAG_LARCH_FLOAT_ABI_SOFT 0x1100
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#define FLAG_LARCH_FLOAT_ABI_DOUBLE 0x1200
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/* Name of auxiliary cache. */
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#define _PATH_LDCONFIG_AUX_CACHE "/var/cache/ldconfig/aux-cache"
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82
sysdeps/unix/sysv/linux/loongarch/dl-cache.h
Normal file
82
sysdeps/unix/sysv/linux/loongarch/dl-cache.h
Normal file
@ -0,0 +1,82 @@
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/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
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Copyright (C) 2022-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library. If not, see
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<https://www.gnu.org/licenses/>. */
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#include <ldconfig.h>
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#include <assert.h>
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#if defined __loongarch_double_float
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# define _DL_CACHE_DEFAULT_ID (FLAG_LARCH_FLOAT_ABI_DOUBLE | FLAG_ELF_LIBC6)
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#else
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# define _DL_CACHE_DEFAULT_ID (FLAG_LARCH_FLOAT_ABI_SOFT | FLAG_ELF_LIBC6)
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#endif
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#define _dl_cache_check_flags(flags) \
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((flags) == _DL_CACHE_DEFAULT_ID)
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/* If given a path to one of our library directories, adds every library
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directory via add_dir (), otherwise just adds the giver directory. On
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LoongArch, libraries can be found in paths ending in:
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- /lib64
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- /lib64/sf
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so this will add all of those paths. */
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#define add_system_dir(dir) \
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do \
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{ \
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static const char* lib_dirs[] = { \
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"/lib64", \
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"/lib64/sf", \
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NULL, \
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}; \
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const size_t lib_len = sizeof ("/lib") - 1; \
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size_t len = strlen (dir); \
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char path[len + 6]; \
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const char **ptr; \
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\
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memcpy (path, dir, len + 1); \
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\
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for (ptr = lib_dirs; *ptr != NULL; ptr++) \
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{ \
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const char *lib_dir = *ptr; \
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size_t dir_len = strlen (lib_dir); \
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\
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if (len >= dir_len \
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&& !memcmp (path + len - dir_len, lib_dir, dir_len)) \
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{ \
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len -= dir_len - lib_len; \
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path[len] = '\0'; \
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break; \
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} \
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} \
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add_dir (path); \
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if (len >= lib_len \
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&& !memcmp (path + len - lib_len, "/lib", lib_len)) \
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for (ptr = lib_dirs; *ptr != NULL; ptr++) \
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{ \
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const char *lib_dir = *ptr; \
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size_t dir_len = strlen (lib_dir); \
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\
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assert (dir_len >= lib_len); \
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memcpy (path + len, lib_dir + lib_len, \
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dir_len - lib_len + 1); \
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add_dir (path); \
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} \
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} while (0)
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#include_next <dl-cache.h>
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70
sysdeps/unix/sysv/linux/loongarch/readelflib.c
Normal file
70
sysdeps/unix/sysv/linux/loongarch/readelflib.c
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@ -0,0 +1,70 @@
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/* Support for reading ELF files.
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Copyright (C) 2022-2023 Free Software Foundation, Inc.
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This file is part of the GNU C Library.
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The GNU C Library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Lesser General Public
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License as published by the Free Software Foundation; either
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version 2.1 of the License, or (at your option) any later version.
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The GNU C Library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Lesser General Public License for more details.
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You should have received a copy of the GNU Lesser General Public
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License along with the GNU C Library; if not, see
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<https://www.gnu.org/licenses/>. */
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int process_elf64_file (const char *file_name, const char *lib,
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int *flag, unsigned int *isa_level, char **soname,
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void *file_contents, size_t file_length);
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#define SUPPORTED_ELF_FLAGS \
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(EF_LARCH_ABI_DOUBLE_FLOAT | EF_LARCH_ABI_SOFT_FLOAT)
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/* Returns 0 if everything is ok, != 0 in case of error. */
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int
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process_elf_file (const char *file_name, const char *lib, int *flag,
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unsigned int *isa_level, char **soname, void *file_contents,
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size_t file_length)
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{
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ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents;
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Elf64_Ehdr *elf64_header = (Elf64_Ehdr *) elf_header;
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int ret;
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long flags;
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/* LoongArch libraries are always libc.so.6+. */
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*flag = FLAG_ELF_LIBC6;
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ret = process_elf64_file (file_name, lib, flag, isa_level, soname,
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file_contents, file_length);
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flags = elf64_header->e_flags;
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/* LoongArch linkers encode the floating point ABI as part of the ELF headers. */
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switch (flags & SUPPORTED_ELF_FLAGS)
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{
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case EF_LARCH_ABI_SOFT_FLOAT:
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*flag |= FLAG_LARCH_FLOAT_ABI_SOFT;
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break;
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case EF_LARCH_ABI_DOUBLE_FLOAT:
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*flag |= FLAG_LARCH_FLOAT_ABI_DOUBLE;
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break;
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default:
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return 1;
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}
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/* If there are any other ELF flags set then glibc doesn't support this
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library. */
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if (flags & ~SUPPORTED_ELF_FLAGS)
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return 1;
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return ret;
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}
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#undef __ELF_NATIVE_CLASS
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#undef process_elf_file
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#define process_elf_file process_elf64_file
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#define __ELF_NATIVE_CLASS 64
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#include "elf/readelflib.c"
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