mirror of git://sourceware.org/git/glibc.git
77 lines
2.6 KiB
C
77 lines
2.6 KiB
C
/* Support for reading ELF files.
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Copyright (C) 2022-2024 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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/* The EF_LARCH_OBJABI_V1 flag indicate which set of static relocations
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the object might use and it only considered during static linking,
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it does not reflect in runtime relocations. However some binutils
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version might set it on dynamic shared object, so clear it to avoid
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see the SO as unsupported. */
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flags = elf64_header->e_flags & ~EF_LARCH_OBJABI_V1;
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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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