2023-12-22 11:57:49 +00:00
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// SPDX-FileCopyrightText: 2002-2023 PCSX2 Dev Team
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// SPDX-License-Identifier: LGPL-3.0+
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2021-09-21 10:05:20 +00:00
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#include "FastJmp.h"
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#ifndef _WIN32
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#if defined(__APPLE__)
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#define PREFIX "_"
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#else
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#define PREFIX ""
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#endif
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asm(
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"\t.global " PREFIX "fastjmp_set\n"
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"\t.global " PREFIX "fastjmp_jmp\n"
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"\t.text\n"
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"\t" PREFIX "fastjmp_set:" R"(
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movq 0(%rsp), %rax
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movq %rsp, %rdx # fixup stack pointer, so it doesn't include the call to fastjmp_set
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addq $8, %rdx
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movq %rax, 0(%rdi) # actually rip
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movq %rbx, 8(%rdi)
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movq %rdx, 16(%rdi) # actually rsp
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movq %rbp, 24(%rdi)
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movq %r12, 32(%rdi)
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movq %r13, 40(%rdi)
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movq %r14, 48(%rdi)
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movq %r15, 56(%rdi)
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xorl %eax, %eax
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ret
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)"
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"\t" PREFIX "fastjmp_jmp:" R"(
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movl %esi, %eax
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movq 0(%rdi), %rdx # actually rip
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movq 8(%rdi), %rbx
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movq 16(%rdi), %rsp # actually rsp
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movq 24(%rdi), %rbp
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movq 32(%rdi), %r12
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movq 40(%rdi), %r13
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movq 48(%rdi), %r14
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movq 56(%rdi), %r15
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jmp *%rdx
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)");
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#endif // __WIN32
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