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author | caiyinyu <caiyinyu@loongson.cn> | 2023-03-07 20:23:57 +0800 |
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committer | caiyinyu <caiyinyu@loongson.cn> | 2023-03-13 09:20:28 +0800 |
commit | f0d33cbdce27f153e69c6527716ef906cce11841 (patch) | |
tree | df33676ae8c3b2ebaf5fe3d8ba3424c3517aefcf /sysdeps/unix/sysv/linux/loongarch/readelflib.c | |
parent | e78c4c49831d0ca6253ff5ce5b956cdc4189c8a9 (diff) | |
download | glibc-f0d33cbdce27f153e69c6527716ef906cce11841.tar.gz glibc-f0d33cbdce27f153e69c6527716ef906cce11841.tar.xz glibc-f0d33cbdce27f153e69c6527716ef906cce11841.zip |
LoongArch: Add support for ldconfig.
Diffstat (limited to 'sysdeps/unix/sysv/linux/loongarch/readelflib.c')
-rw-r--r-- | sysdeps/unix/sysv/linux/loongarch/readelflib.c | 70 |
1 files changed, 70 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/loongarch/readelflib.c b/sysdeps/unix/sysv/linux/loongarch/readelflib.c new file mode 100644 index 0000000000..bcaff86b36 --- /dev/null +++ b/sysdeps/unix/sysv/linux/loongarch/readelflib.c @@ -0,0 +1,70 @@ +/* Support for reading ELF files. + Copyright (C) 2022-2023 Free Software Foundation, Inc. + This file is part of the GNU C Library. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library 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 + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library; if not, see + <https://www.gnu.org/licenses/>. */ + + +int process_elf64_file (const char *file_name, const char *lib, + int *flag, unsigned int *isa_level, char **soname, + void *file_contents, size_t file_length); + +#define SUPPORTED_ELF_FLAGS \ + (EF_LARCH_ABI_DOUBLE_FLOAT | EF_LARCH_ABI_SOFT_FLOAT) + +/* Returns 0 if everything is ok, != 0 in case of error. */ +int +process_elf_file (const char *file_name, const char *lib, int *flag, + unsigned int *isa_level, char **soname, void *file_contents, + size_t file_length) +{ + ElfW(Ehdr) *elf_header = (ElfW(Ehdr) *) file_contents; + Elf64_Ehdr *elf64_header = (Elf64_Ehdr *) elf_header; + int ret; + long flags; + + /* LoongArch libraries are always libc.so.6+. */ + *flag = FLAG_ELF_LIBC6; + + ret = process_elf64_file (file_name, lib, flag, isa_level, soname, + file_contents, file_length); + flags = elf64_header->e_flags; + + /* LoongArch linkers encode the floating point ABI as part of the ELF headers. */ + switch (flags & SUPPORTED_ELF_FLAGS) + { + case EF_LARCH_ABI_SOFT_FLOAT: + *flag |= FLAG_LARCH_FLOAT_ABI_SOFT; + break; + case EF_LARCH_ABI_DOUBLE_FLOAT: + *flag |= FLAG_LARCH_FLOAT_ABI_DOUBLE; + break; + default: + return 1; + } + + /* If there are any other ELF flags set then glibc doesn't support this + library. */ + if (flags & ~SUPPORTED_ELF_FLAGS) + return 1; + + return ret; +} + +#undef __ELF_NATIVE_CLASS +#undef process_elf_file +#define process_elf_file process_elf64_file +#define __ELF_NATIVE_CLASS 64 +#include "elf/readelflib.c" |