d3febfd9ad
REF: https://bugzilla.tianocore.org/show_bug.cgi?id=3790 Replace Opcode with the corresponding instructions. The code changes have been verified with CompareBuild.py tool, which can be used to compare the results of two different EDK II builds to determine if they generate the same binaries. (tool link: https://github.com/mdkinney/edk2/tree/sandbox/CompareBuild) Signed-off-by: Jason Lou <yun.lou@intel.com> Cc: Michael D Kinney <michael.d.kinney@intel.com> Reviewed-by: Liming Gao <gaoliming@byosoft.com.cn> Cc: Zhiguang Liu <zhiguang.liu@intel.com>
82 lines
2.2 KiB
NASM
82 lines
2.2 KiB
NASM
;------------------------------------------------------------------------------
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;
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; Copyright (c) 2006 - 2022, Intel Corporation. All rights reserved.<BR>
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; SPDX-License-Identifier: BSD-2-Clause-Patent
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;
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; Module Name:
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;
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; SetJump.Asm
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;
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; Abstract:
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;
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; Implementation of SetJump() on x64.
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;
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;------------------------------------------------------------------------------
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%include "Nasm.inc"
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DEFAULT REL
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SECTION .text
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extern ASM_PFX(InternalAssertJumpBuffer)
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extern ASM_PFX(PcdGet32 (PcdControlFlowEnforcementPropertyMask))
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;------------------------------------------------------------------------------
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; UINTN
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; EFIAPI
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; SetJump (
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; OUT BASE_LIBRARY_JUMP_BUFFER *JumpBuffer
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; );
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;------------------------------------------------------------------------------
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global ASM_PFX(SetJump)
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ASM_PFX(SetJump):
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push rcx
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add rsp, -0x20
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call ASM_PFX(InternalAssertJumpBuffer)
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add rsp, 0x20
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pop rcx
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pop rdx
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xor rax, rax
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mov [rcx + 0xF8], rax ; save 0 to SSP
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mov eax, [ASM_PFX(PcdGet32 (PcdControlFlowEnforcementPropertyMask))]
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test eax, eax
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jz CetDone
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mov rax, cr4
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bt eax, 23 ; check if CET is enabled
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jnc CetDone
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mov rax, 1
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incsspq rax ; to read original SSP
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rdsspq rax
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mov [rcx + 0xF8], rax ; save SSP
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CetDone:
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mov [rcx], rbx
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mov [rcx + 8], rsp
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mov [rcx + 0x10], rbp
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mov [rcx + 0x18], rdi
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mov [rcx + 0x20], rsi
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mov [rcx + 0x28], r12
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mov [rcx + 0x30], r13
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mov [rcx + 0x38], r14
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mov [rcx + 0x40], r15
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mov [rcx + 0x48], rdx
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; save non-volatile fp registers
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stmxcsr [rcx + 0x50]
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movdqu [rcx + 0x58], xmm6
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movdqu [rcx + 0x68], xmm7
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movdqu [rcx + 0x78], xmm8
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movdqu [rcx + 0x88], xmm9
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movdqu [rcx + 0x98], xmm10
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movdqu [rcx + 0xA8], xmm11
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movdqu [rcx + 0xB8], xmm12
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movdqu [rcx + 0xC8], xmm13
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movdqu [rcx + 0xD8], xmm14
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movdqu [rcx + 0xE8], xmm15
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xor rax, rax
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jmp rdx
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