Ejemplos de LOAD_REG16 en C++ (Cpp)

Ejemplo n.º 1

static void I486OP(cmpxchg_rm16_r16)(i386_state *cpustate)	// Opcode 0x0f b1
{
	UINT8 modrm = FETCH(cpustate);
	if( modrm >= 0xc0 ) {
		UINT16 dst = LOAD_RM16(modrm);
		UINT16 src = LOAD_REG16(modrm);

		if( REG16(AX) == dst ) {
			STORE_RM16(modrm, src);
			cpustate->ZF = 1;
			CYCLES(cpustate,CYCLES_CMPXCHG_REG_REG_T);
		} else {
			REG16(AX) = dst;
			cpustate->ZF = 0;
			CYCLES(cpustate,CYCLES_CMPXCHG_REG_REG_F);
		}
	} else {
		UINT32 ea = GetEA(cpustate,modrm);
		UINT16 dst = READ16(cpustate,ea);
		UINT16 src = LOAD_REG16(modrm);

		if( REG16(AX) == dst ) {
			WRITE16(cpustate,modrm, src);
			cpustate->ZF = 1;
			CYCLES(cpustate,CYCLES_CMPXCHG_REG_MEM_T);
		} else {
			REG16(AX) = dst;
			cpustate->ZF = 0;
			CYCLES(cpustate,CYCLES_CMPXCHG_REG_MEM_F);
		}
	}
}

Ejemplo n.º 2

Archivo: i486ops.c Proyecto: jiangzhonghui/mame

void i386_device::i486_cmpxchg_rm16_r16()  // Opcode 0x0f b1
{
	UINT8 modrm = FETCH();
	if( modrm >= 0xc0 ) {
		UINT16 dst = LOAD_RM16(modrm);
		UINT16 src = LOAD_REG16(modrm);

		if( REG16(AX) == dst ) {
			STORE_RM16(modrm, src);
			m_ZF = 1;
			CYCLES(CYCLES_CMPXCHG_REG_REG_T);
		} else {
			REG16(AX) = dst;
			m_ZF = 0;
			CYCLES(CYCLES_CMPXCHG_REG_REG_F);
		}
	} else {
		UINT32 ea = GetEA(modrm,0);
		UINT16 dst = READ16(ea);
		UINT16 src = LOAD_REG16(modrm);

		if( REG16(AX) == dst ) {
			WRITE16(ea, src);
			m_ZF = 1;
			CYCLES(CYCLES_CMPXCHG_REG_MEM_T);
		} else {
			REG16(AX) = dst;
			m_ZF = 0;
			CYCLES(CYCLES_CMPXCHG_REG_MEM_F);
		}
	}
}

Ejemplo n.º 3

static void I486OP(xadd_rm16_r16)(i386_state *cpustate)	// Opcode 0x0f c1
{
	UINT8 modrm = FETCH(cpustate);
	if( modrm >= 0xc0 ) {
		UINT16 dst = LOAD_RM16(modrm);
		UINT16 src = LOAD_REG16(modrm);
		STORE_RM16(modrm, dst + src);
		STORE_REG16(modrm, dst);
		CYCLES(cpustate,CYCLES_XADD_REG_REG);
	} else {
		UINT32 ea = GetEA(cpustate,modrm);
		UINT16 dst = READ16(cpustate,ea);
		UINT16 src = LOAD_REG16(modrm);
		WRITE16(cpustate,ea, dst + src);
		STORE_REG16(modrm, dst);
		CYCLES(cpustate,CYCLES_XADD_REG_MEM);
	}
}

Ejemplo n.º 4

Archivo: i486ops.c Proyecto: jiangzhonghui/mame

void i386_device::i486_xadd_rm16_r16() // Opcode 0x0f c1
{
	UINT8 modrm = FETCH();
	if( modrm >= 0xc0 ) {
		UINT16 dst = LOAD_RM16(modrm);
		UINT16 src = LOAD_REG16(modrm);
		STORE_REG16(modrm, dst);
		STORE_RM16(modrm, dst + src);
		CYCLES(CYCLES_XADD_REG_REG);
	} else {
		UINT32 ea = GetEA(modrm,1);
		UINT16 dst = READ16(ea);
		UINT16 src = LOAD_REG16(modrm);
		WRITE16(ea, dst + src);
		STORE_REG16(modrm, dst);
		CYCLES(CYCLES_XADD_REG_MEM);
	}
}