diff options
Diffstat (limited to 'sysdeps/x86_64/dl-trampoline.S')
| -rw-r--r-- | sysdeps/x86_64/dl-trampoline.S | 147 |
1 files changed, 0 insertions, 147 deletions
diff --git a/sysdeps/x86_64/dl-trampoline.S b/sysdeps/x86_64/dl-trampoline.S deleted file mode 100644 index c14c61aa58..0000000000 --- a/sysdeps/x86_64/dl-trampoline.S +++ /dev/null @@ -1,147 +0,0 @@ -/* PLT trampolines. x86-64 version. - Copyright (C) 2004-2017 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 - <http://www.gnu.org/licenses/>. */ - -#include <config.h> -#include <sysdep.h> -#include <cpu-features.h> -#include <link-defines.h> - -#ifndef DL_STACK_ALIGNMENT -/* Due to GCC bug: - - https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066 - - __tls_get_addr may be called with 8-byte stack alignment. Although - this bug has been fixed in GCC 4.9.4, 5.3 and 6, we can't assume - that stack will be always aligned at 16 bytes. We use unaligned - 16-byte move to load and store SSE registers, which has no penalty - on modern processors if stack is 16-byte aligned. */ -# define DL_STACK_ALIGNMENT 8 -#endif - -#ifndef DL_RUNTIME_UNALIGNED_VEC_SIZE -/* The maximum size in bytes of unaligned vector load and store in the - dynamic linker. Since SSE optimized memory/string functions with - aligned SSE register load and store are used in the dynamic linker, - we must set this to 8 so that _dl_runtime_resolve_sse will align the - stack before calling _dl_fixup. */ -# define DL_RUNTIME_UNALIGNED_VEC_SIZE 8 -#endif - -/* True if _dl_runtime_resolve should align stack to VEC_SIZE bytes. */ -#define DL_RUNTIME_RESOLVE_REALIGN_STACK \ - (VEC_SIZE > DL_STACK_ALIGNMENT \ - && VEC_SIZE > DL_RUNTIME_UNALIGNED_VEC_SIZE) - -/* Align vector register save area to 16 bytes. */ -#define REGISTER_SAVE_VEC_OFF 0 - -/* Area on stack to save and restore registers used for parameter - passing when calling _dl_fixup. */ -#ifdef __ILP32__ -# define REGISTER_SAVE_RAX (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 8) -# define PRESERVE_BND_REGS_PREFIX -#else -/* Align bound register save area to 16 bytes. */ -# define REGISTER_SAVE_BND0 (REGISTER_SAVE_VEC_OFF + VEC_SIZE * 8) -# define REGISTER_SAVE_BND1 (REGISTER_SAVE_BND0 + 16) -# define REGISTER_SAVE_BND2 (REGISTER_SAVE_BND1 + 16) -# define REGISTER_SAVE_BND3 (REGISTER_SAVE_BND2 + 16) -# define REGISTER_SAVE_RAX (REGISTER_SAVE_BND3 + 16) -# ifdef HAVE_MPX_SUPPORT -# define PRESERVE_BND_REGS_PREFIX bnd -# else -# define PRESERVE_BND_REGS_PREFIX .byte 0xf2 -# endif -#endif -#define REGISTER_SAVE_RCX (REGISTER_SAVE_RAX + 8) -#define REGISTER_SAVE_RDX (REGISTER_SAVE_RCX + 8) -#define REGISTER_SAVE_RSI (REGISTER_SAVE_RDX + 8) -#define REGISTER_SAVE_RDI (REGISTER_SAVE_RSI + 8) -#define REGISTER_SAVE_R8 (REGISTER_SAVE_RDI + 8) -#define REGISTER_SAVE_R9 (REGISTER_SAVE_R8 + 8) - -#define RESTORE_AVX - -#define VEC_SIZE 64 -#define VMOVA vmovdqa64 -#if DL_RUNTIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT -# define VMOV vmovdqa64 -#else -# define VMOV vmovdqu64 -#endif -#define VEC(i) zmm##i -#define _dl_runtime_resolve _dl_runtime_resolve_avx512 -#define _dl_runtime_profile _dl_runtime_profile_avx512 -#include "dl-trampoline.h" -#undef _dl_runtime_resolve -#undef _dl_runtime_profile -#undef VEC -#undef VMOV -#undef VMOVA -#undef VEC_SIZE - -#define VEC_SIZE 32 -#define VMOVA vmovdqa -#if DL_RUNTIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT -# define VMOV vmovdqa -#else -# define VMOV vmovdqu -#endif -#define VEC(i) ymm##i -#define _dl_runtime_resolve _dl_runtime_resolve_avx -#define _dl_runtime_resolve_opt _dl_runtime_resolve_avx_opt -#define _dl_runtime_profile _dl_runtime_profile_avx -#include "dl-trampoline.h" -#undef _dl_runtime_resolve -#undef _dl_runtime_resolve_opt -#undef _dl_runtime_profile -#undef VEC -#undef VMOV -#undef VMOVA -#undef VEC_SIZE - -/* movaps/movups is 1-byte shorter. */ -#define VEC_SIZE 16 -#define VMOVA movaps -#if DL_RUNTIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT -# define VMOV movaps -#else -# define VMOV movups -#endif -#define VEC(i) xmm##i -#define _dl_runtime_resolve _dl_runtime_resolve_sse -#define _dl_runtime_profile _dl_runtime_profile_sse -#undef RESTORE_AVX -#include "dl-trampoline.h" -#undef _dl_runtime_resolve -#undef _dl_runtime_profile -#undef VMOV -#undef VMOVA - -/* Used by _dl_runtime_resolve_avx_opt/_dl_runtime_resolve_avx512_opt - to preserve the full vector registers with zero upper bits. */ -#define VMOVA vmovdqa -#if DL_RUNTIME_RESOLVE_REALIGN_STACK || VEC_SIZE <= DL_STACK_ALIGNMENT -# define VMOV vmovdqa -#else -# define VMOV vmovdqu -#endif -#define _dl_runtime_resolve _dl_runtime_resolve_sse_vex -#define _dl_runtime_resolve_opt _dl_runtime_resolve_avx512_opt -#include "dl-trampoline.h" |