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bf433b849a
Intel MPX failed to gain wide adoption and has been deprecated for a while. GCC 9.1 removed Intel MPX support. Linux kernel removed MPX in 2019. This patch removes the support code from the dynamic loader. Reviewed-by: H.J. Lu <hjl.tools@gmail.com>
110 lines
3.3 KiB
ArmAsm
110 lines
3.3 KiB
ArmAsm
/* PLT trampolines. x86-64 version.
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Copyright (C) 2004-2021 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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#include <config.h>
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#include <sysdep.h>
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#include <cpu-features-offsets.h>
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#include <link-defines.h>
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#ifndef DL_STACK_ALIGNMENT
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/* Due to GCC bug:
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https://gcc.gnu.org/bugzilla/show_bug.cgi?id=58066
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__tls_get_addr may be called with 8-byte stack alignment. Although
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this bug has been fixed in GCC 4.9.4, 5.3 and 6, we can't assume
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that stack will be always aligned at 16 bytes. We use unaligned
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16-byte move to load and store SSE registers, which has no penalty
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on modern processors if stack is 16-byte aligned. */
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# define DL_STACK_ALIGNMENT 8
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#endif
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/* True if _dl_runtime_resolve should align stack for STATE_SAVE or align
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stack to 16 bytes before calling _dl_fixup. */
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#define DL_RUNTIME_RESOLVE_REALIGN_STACK \
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(STATE_SAVE_ALIGNMENT > DL_STACK_ALIGNMENT \
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|| 16 > DL_STACK_ALIGNMENT)
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/* Area on stack to save and restore registers used for parameter
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passing when calling _dl_fixup. */
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#define REGISTER_SAVE_RAX 0
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#define REGISTER_SAVE_RCX (REGISTER_SAVE_RAX + 8)
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#define REGISTER_SAVE_RDX (REGISTER_SAVE_RCX + 8)
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#define REGISTER_SAVE_RSI (REGISTER_SAVE_RDX + 8)
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#define REGISTER_SAVE_RDI (REGISTER_SAVE_RSI + 8)
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#define REGISTER_SAVE_R8 (REGISTER_SAVE_RDI + 8)
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#define REGISTER_SAVE_R9 (REGISTER_SAVE_R8 + 8)
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#define RESTORE_AVX
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#define VEC_SIZE 64
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#define VMOVA vmovdqa64
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#define VEC(i) zmm##i
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#define _dl_runtime_profile _dl_runtime_profile_avx512
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#include "dl-trampoline.h"
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#undef _dl_runtime_profile
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#undef VEC
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#undef VMOVA
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#undef VEC_SIZE
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#define VEC_SIZE 32
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#define VMOVA vmovdqa
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#define VEC(i) ymm##i
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#define _dl_runtime_profile _dl_runtime_profile_avx
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#include "dl-trampoline.h"
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#undef _dl_runtime_profile
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#undef VEC
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#undef VMOVA
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#undef VEC_SIZE
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/* movaps/movups is 1-byte shorter. */
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#define VEC_SIZE 16
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#define VMOVA movaps
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#define VEC(i) xmm##i
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#define _dl_runtime_profile _dl_runtime_profile_sse
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#undef RESTORE_AVX
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#include "dl-trampoline.h"
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#undef _dl_runtime_profile
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#undef VEC
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#undef VMOVA
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#undef VEC_SIZE
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#define USE_FXSAVE
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#define STATE_SAVE_ALIGNMENT 16
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#define _dl_runtime_resolve _dl_runtime_resolve_fxsave
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#include "dl-trampoline.h"
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#undef _dl_runtime_resolve
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#undef USE_FXSAVE
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#undef STATE_SAVE_ALIGNMENT
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#define USE_XSAVE
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#define STATE_SAVE_ALIGNMENT 64
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#define _dl_runtime_resolve _dl_runtime_resolve_xsave
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#include "dl-trampoline.h"
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#undef _dl_runtime_resolve
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#undef USE_XSAVE
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#undef STATE_SAVE_ALIGNMENT
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#define USE_XSAVEC
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#define STATE_SAVE_ALIGNMENT 64
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#define _dl_runtime_resolve _dl_runtime_resolve_xsavec
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#include "dl-trampoline.h"
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#undef _dl_runtime_resolve
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#undef USE_XSAVEC
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#undef STATE_SAVE_ALIGNMENT
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