mirror of
https://github.com/herumi/xbyak
synced 2024-11-21 16:09:11 -07:00
45 lines
851 B
C++
45 lines
851 B
C++
/*
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sample to use static memory
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*/
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#include <stdio.h>
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#define XBYAK_NO_OP_NAMES
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#include "xbyak/xbyak.h"
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MIE_ALIGN(4096) char buf[4096];
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struct Code : Xbyak::CodeGenerator {
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Code()
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: Xbyak::CodeGenerator(sizeof(buf), buf)
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{
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puts("generate");
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printf("ptr=%p, %p\n", getCode(), buf);
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#ifdef XBYAK32
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mov(eax, ptr [esp + 4]);
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add(eax, ptr [esp + 8]);
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#elif defined(XBYAK64_WIN)
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lea(rax, ptr [rcx + rdx]);
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#else
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lea(rax, ptr [rdi + rsi]);
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#endif
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ret();
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Xbyak::CodeArray::protect(buf, sizeof(buf), Xbyak::CodeArray::PROTECT_RE);
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}
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~Code()
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{
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Xbyak::CodeArray::protect(buf, sizeof(buf), Xbyak::CodeArray::PROTECT_RW);
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}
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} s_code;
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inline int add(int a, int b)
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{
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return reinterpret_cast<int (*)(int, int)>(buf)(a, b);
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}
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int main()
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{
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int sum = 0;
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for (int i = 0; i < 10; i++) {
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sum += add(i, 5);
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}
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printf("sum=%d\n", sum);
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}
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