-/* Copyright (C) 1999-2023 Free Software Foundation, Inc.
+/* Copyright (C) 2022-2023 Free Software Foundation, Inc.
This file is part of the GNU C Library.
This program is free software; you can redistribute it and/or modify
case FLAG_RISCV_FLOAT_ABI_DOUBLE:
fputs (",double-float", stdout);
break;
+ case FLAG_LARCH_FLOAT_ABI_SOFT:
+ fputs (",soft-float", stdout);
+ break;
+ case FLAG_LARCH_FLOAT_ABI_DOUBLE:
+ fputs (",double-float", stdout);
+ break;
case 0:
break;
default:
-/* Copyright (C) 1999-2023 Free Software Foundation, Inc.
+/* 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
#define FLAG_MIPS64_LIBN64_NAN2008 0x0e00
#define FLAG_RISCV_FLOAT_ABI_SOFT 0x0f00
#define FLAG_RISCV_FLOAT_ABI_DOUBLE 0x1000
+#define FLAG_LARCH_FLOAT_ABI_SOFT 0x1100
+#define FLAG_LARCH_FLOAT_ABI_DOUBLE 0x1200
/* Name of auxiliary cache. */
#define _PATH_LDCONFIG_AUX_CACHE "/var/cache/ldconfig/aux-cache"
--- /dev/null
+/* Support for reading /etc/ld.so.cache files written by Linux ldconfig.
+ 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/>. */
+
+#include <ldconfig.h>
+#include <assert.h>
+
+#if defined __loongarch_double_float
+# define _DL_CACHE_DEFAULT_ID (FLAG_LARCH_FLOAT_ABI_DOUBLE | FLAG_ELF_LIBC6)
+#else
+# define _DL_CACHE_DEFAULT_ID (FLAG_LARCH_FLOAT_ABI_SOFT | FLAG_ELF_LIBC6)
+#endif
+
+#define _dl_cache_check_flags(flags) \
+ ((flags) == _DL_CACHE_DEFAULT_ID)
+
+/* If given a path to one of our library directories, adds every library
+ directory via add_dir (), otherwise just adds the giver directory. On
+ LoongArch, libraries can be found in paths ending in:
+ - /lib64
+ - /lib64/sf
+ so this will add all of those paths. */
+
+#define add_system_dir(dir) \
+ do \
+ { \
+ static const char* lib_dirs[] = { \
+ "/lib64", \
+ "/lib64/sf", \
+ NULL, \
+ }; \
+ const size_t lib_len = sizeof ("/lib") - 1; \
+ size_t len = strlen (dir); \
+ char path[len + 6]; \
+ const char **ptr; \
+ \
+ memcpy (path, dir, len + 1); \
+ \
+ for (ptr = lib_dirs; *ptr != NULL; ptr++) \
+ { \
+ const char *lib_dir = *ptr; \
+ size_t dir_len = strlen (lib_dir); \
+ \
+ if (len >= dir_len \
+ && !memcmp (path + len - dir_len, lib_dir, dir_len)) \
+ { \
+ len -= dir_len - lib_len; \
+ path[len] = '\0'; \
+ break; \
+ } \
+ } \
+ add_dir (path); \
+ if (len >= lib_len \
+ && !memcmp (path + len - lib_len, "/lib", lib_len)) \
+ for (ptr = lib_dirs; *ptr != NULL; ptr++) \
+ { \
+ const char *lib_dir = *ptr; \
+ size_t dir_len = strlen (lib_dir); \
+ \
+ assert (dir_len >= lib_len); \
+ memcpy (path + len, lib_dir + lib_len, \
+ dir_len - lib_len + 1); \
+ add_dir (path); \
+ } \
+ } while (0)
+
+
+#include_next <dl-cache.h>
--- /dev/null
+/* 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"
git://sourceware.org / glibc.git / commitdiff