C++ (Cpp) STORE_REG32の例

コード例 #1

static void I486OP(xadd_rm32_r32)(i386_state *cpustate)	// Opcode 0x0f c1
{
	UINT8 modrm = FETCH(cpustate);
	if( modrm >= 0xc0 ) {
		UINT32 dst = LOAD_RM32(modrm);
		UINT32 src = LOAD_REG32(modrm);
		STORE_RM32(modrm, dst + src);
		STORE_REG32(modrm, dst);
		CYCLES(cpustate,CYCLES_XADD_REG_REG);
	} else {
		UINT32 ea = GetEA(cpustate,modrm);
		UINT32 dst = READ32(cpustate,ea);
		UINT32 src = LOAD_REG32(modrm);
		WRITE32(cpustate,ea, dst + src);
		STORE_REG32(modrm, dst);
		CYCLES(cpustate,CYCLES_XADD_REG_MEM);
	}
}

コード例 #2

ファイル: i486ops.c プロジェクト: jiangzhonghui/mame

void i386_device::i486_xadd_rm32_r32() // Opcode 0x0f c1
{
	UINT8 modrm = FETCH();
	if( modrm >= 0xc0 ) {
		UINT32 dst = LOAD_RM32(modrm);
		UINT32 src = LOAD_REG32(modrm);
		STORE_REG32(modrm, dst);
		STORE_RM32(modrm, dst + src);
		CYCLES(CYCLES_XADD_REG_REG);
	} else {
		UINT32 ea = GetEA(modrm,1);
		UINT32 dst = READ32(ea);
		UINT32 src = LOAD_REG32(modrm);
		WRITE32(ea, dst + src);
		STORE_REG32(modrm, dst);
		CYCLES(CYCLES_XADD_REG_MEM);
	}
}