#include #include #include #include struct A { int x_; int y_; A() : x_(3), y_(5) {} int func(int a, int b, int c, int d, int e) const { return x_ + y_ + a + b + c + d + e; } }; #ifdef _MSC_VER #pragma warning(disable : 4510 4512 4610) #endif struct Code : public Xbyak::CodeGenerator { Code() { using namespace Xbyak; int RET_ADJ = 0; #ifdef XBYAK32 #ifdef _WIN32 const int PARA_ADJ = 0; RET_ADJ = 5 * 4; #else const int PARA_ADJ = 4; mov(ecx, ptr [esp + 4]); #endif #endif const struct { #ifdef XBYAK32 const Reg32& self; #else const Reg64& self; #endif const Operand& a; const Operand& b; const Operand& c; const Operand& d; const Operand& e; } para = { #if defined(XBYAK64_WIN) rcx, edx, r8d, r9d, ptr [rsp + 8 * 5], ptr [rsp + 8 * 6], #elif defined(XBYAK64_GCC) rdi, esi, edx, ecx, r8d, r9d, #else ecx, ptr [esp + 4 + PARA_ADJ], ptr [esp + 8 + PARA_ADJ], ptr [esp + 12 + PARA_ADJ], ptr [esp + 16 + PARA_ADJ], ptr [esp + 20 + PARA_ADJ], #endif }; mov(eax, ptr [para.self]); add(eax, ptr [para.self + 4]); add(eax, para.a); add(eax, para.b); add(eax, para.c); add(eax, para.d); add(eax, para.e); ret(RET_ADJ); } }; int main() { #ifdef XBYAK64 printf("64bit"); #else printf("32bit"); #endif #ifdef _WIN32 puts(" win"); #else puts(" linux"); #endif try { Code code; int (A::*p)(int, int, int, int, int) const = 0; const void *addr = code.getCode(); memcpy(&p, &addr, sizeof(void*)); for (int i = 0; i < 10; i++) { A a; int t1, t2, t3, t4, t5, x, y; a.x_ = rand(); a.y_ = rand(); t1 = rand(); t2 = rand(); t3 = rand(); t4 = rand(); t5 = rand(); x = a.func(t1, t2, t3, t4, t5); y = (a.*p)(t1, t2, t3, t4, t5); printf("%c %d, %d\n", x == y ? 'o' : 'x', x, y); } } catch (std::exception& e) { printf("err=%s\n", e.what()); return 1; } }