| /* PLT trampolines. x86-64 version. |
| Copyright (C) 2004-2018 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 |
| |
| /* True if _dl_runtime_resolve should align stack for STATE_SAVE or align |
| stack to 16 bytes before calling _dl_fixup. */ |
| #define DL_RUNTIME_RESOLVE_REALIGN_STACK \ |
| (STATE_SAVE_ALIGNMENT > DL_STACK_ALIGNMENT \ |
| || 16 > DL_STACK_ALIGNMENT) |
| |
| /* Area on stack to save and restore registers used for parameter |
| passing when calling _dl_fixup. */ |
| #ifdef __ILP32__ |
| # define PRESERVE_BND_REGS_PREFIX |
| #else |
| /* clang integrated assembler does not like "bnd" by itself on a line. */ |
| # if defined(HAVE_MPX_SUPPORT) && !defined(__clang__) |
| # define PRESERVE_BND_REGS_PREFIX bnd |
| # else |
| # define PRESERVE_BND_REGS_PREFIX .byte 0xf2 |
| # endif |
| #endif |
| #define REGISTER_SAVE_RAX 0 |
| #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 |
| #define VEC(i) zmm##i |
| #define _dl_runtime_profile _dl_runtime_profile_avx512 |
| #include "dl-trampoline.h" |
| #undef _dl_runtime_profile |
| #undef VEC |
| #undef VMOVA |
| #undef VEC_SIZE |
| |
| #define VEC_SIZE 32 |
| #define VMOVA vmovdqa |
| #define VEC(i) ymm##i |
| #define _dl_runtime_profile _dl_runtime_profile_avx |
| #include "dl-trampoline.h" |
| #undef _dl_runtime_profile |
| #undef VEC |
| #undef VMOVA |
| #undef VEC_SIZE |
| |
| /* movaps/movups is 1-byte shorter. */ |
| #define VEC_SIZE 16 |
| #define VMOVA movaps |
| #define VEC(i) xmm##i |
| #define _dl_runtime_profile _dl_runtime_profile_sse |
| #undef RESTORE_AVX |
| #include "dl-trampoline.h" |
| #undef _dl_runtime_profile |
| #undef VEC |
| #undef VMOVA |
| #undef VEC_SIZE |
| |
| #define USE_FXSAVE |
| #define STATE_SAVE_ALIGNMENT 16 |
| #define _dl_runtime_resolve _dl_runtime_resolve_fxsave |
| #include "dl-trampoline.h" |
| #undef _dl_runtime_resolve |
| #undef USE_FXSAVE |
| #undef STATE_SAVE_ALIGNMENT |
| |
| #define USE_XSAVE |
| #define STATE_SAVE_ALIGNMENT 64 |
| #define _dl_runtime_resolve _dl_runtime_resolve_xsave |
| #include "dl-trampoline.h" |
| #undef _dl_runtime_resolve |
| #undef USE_XSAVE |
| #undef STATE_SAVE_ALIGNMENT |
| |
| #define USE_XSAVEC |
| #define STATE_SAVE_ALIGNMENT 64 |
| #define _dl_runtime_resolve _dl_runtime_resolve_xsavec |
| #include "dl-trampoline.h" |
| #undef _dl_runtime_resolve |
| #undef USE_XSAVEC |
| #undef STATE_SAVE_ALIGNMENT |