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author | mengqinggang <mengqinggang@loongson.cn> | 2024-05-08 10:06:15 +0800 |
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committer | caiyinyu <caiyinyu@loongson.cn> | 2024-05-15 10:31:53 +0800 |
commit | 1dbf2bef7934cee9829d875f11968d6ff1fee77f (patch) | |
tree | d9e2a0c544e5a7468bfc5149613155f2d2d4efdf /sysdeps/loongarch/dl-tlsdesc.h | |
parent | f942a732d37a96217ef828116ebe64a644db18d7 (diff) | |
download | glibc-1dbf2bef7934cee9829d875f11968d6ff1fee77f.tar.gz glibc-1dbf2bef7934cee9829d875f11968d6ff1fee77f.tar.xz glibc-1dbf2bef7934cee9829d875f11968d6ff1fee77f.zip |
LoongArch: Add support for TLS Descriptors
This is mostly based on AArch64 and RISC-V implementation. Add R_LARCH_TLS_DESC32 and R_LARCH_TLS_DESC64 relocations. For _dl_tlsdesc_dynamic function slow path, temporarily save and restore all vector registers.
Diffstat (limited to 'sysdeps/loongarch/dl-tlsdesc.h')
-rw-r--r-- | sysdeps/loongarch/dl-tlsdesc.h | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/loongarch/dl-tlsdesc.h b/sysdeps/loongarch/dl-tlsdesc.h new file mode 100644 index 0000000000..ff8c69cb93 --- /dev/null +++ b/sysdeps/loongarch/dl-tlsdesc.h @@ -0,0 +1,49 @@ +/* Thread-local storage descriptor handling in the ELF dynamic linker. + LoongArch version. + Copyright (C) 2024 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/>. */ + +#ifndef _DL_TLSDESC_H +#define _DL_TLSDESC_H + +#include <dl-tls.h> + +/* Type used to represent a TLS descriptor in the GOT. */ +struct tlsdesc +{ + ptrdiff_t (*entry) (struct tlsdesc *); + void *arg; +}; + +/* Type used as the argument in a TLS descriptor for a symbol that + needs dynamic TLS offsets. */ +struct tlsdesc_dynamic_arg +{ + tls_index tlsinfo; + size_t gen_count; +}; + +extern ptrdiff_t attribute_hidden _dl_tlsdesc_return (struct tlsdesc *); +extern ptrdiff_t attribute_hidden _dl_tlsdesc_undefweak (struct tlsdesc *); + +#ifdef SHARED +extern void *_dl_make_tlsdesc_dynamic (struct link_map *, size_t); +extern ptrdiff_t attribute_hidden _dl_tlsdesc_dynamic (struct tlsdesc *); +#endif + +#endif |