arm2x86_other.h

这是Skyeye 0.9 版本的源代码

#ifndef _ARM2X86_OTHER_H_
#define _ARM2X86_OTHER_H_

extern op_table_t	op_addq_T0_T1_eax_T2;
extern op_table_t	op_b_offset;
extern op_table_t	op_bl_offset;
//teawater add check thumb 2005.07.21-------------------------------------------
extern op_table_t	op_bx_T1;
extern op_table_t	op_blx_T1;
//AJ2D--------------------------------------------------------------------------

typedef void 			(arm2x86_get_other_op_t)(ARMul_State *state, ARMword insn, uint8_t **tbpp, int *plen);
extern arm2x86_get_other_op_t	*arm2x86_get_other_op[16];

extern int			arm2x86_other_init();

static __inline__ void
gen_op_mrs(ARMul_State *state, uint8_t **tbpp, int *plen, ARMword insn)
{
	if ((insn >> 22) & 1) {
		//spsr
		GEN_OP(*tbpp, *plen, op_mrs_T0_spsr);
	}
	else {
		//cpsr
		GEN_OP(*tbpp, *plen, op_mrs_T0_cpsr);
	}
	gen_op_movl_reg_Tx(state, tbpp, plen, ((insn >> 12) & 0xf), 0);
}

static __inline__ void
gen_op_msr(ARMul_State *state, uint8_t **tbpp, int *plen, ARMword insn)
{
	uint32_t	mask = 0;

	//get mask & set it to T0
	if ((insn >> 16) & 1) {
		//control field mask
		mask |= 0xff;
	}
	if ((insn >> 17) & 1) {
		//extension field mask
		mask |= 0xff00;
	}
	if ((insn >> 18) & 1) {
		//status field mask
		mask |= 0xff0000;
	}
	if ((insn >> 19) & 1) {
		//flags field mask
		mask |= 0xff000000;
	}
	if (mask == 0) {
		return;
	}
	gen_op_movl_Tx_im(state, tbpp, plen, 0, mask);

	if ((insn >> 22) & 1) {
		//spsr
		GEN_OP(*tbpp, *plen, op_msr_spsr_T0_T1);
	}
	else {
		//cpsr
		GEN_OP(*tbpp, *plen, op_msr_cpsr_T0_T1);
	}
}

static __inline__ void
gen_op_ldrhstrh(ARMul_State *state, uint8_t **tbpp, int *plen, ARMword insn, ARMword sh)
{
	ARMword	rn, rd;

	rn = (insn >> 16) & 0xf;
	rd = (insn >> 12) & 0xf;
	gen_op_movl_Tx_reg(state, tbpp, plen, 1, rn);
	if (insn & (1 << 24)) {
		gen_op_add_datah_offset(state, tbpp, plen, insn);
	}
	if (insn & (1 << 20)) {
		if (sh == 1) {
			//ldrh
			GEN_OP(*tbpp, *plen, op_ldrh_T0_T1);
		}
		else if (sh == 2) {
			//ldrsb
			GEN_OP(*tbpp, *plen, op_ldrb_T0_T1);
			GEN_OP(*tbpp, *plen, op_signextend_byte_T0);
		}
		else {
			//ldrsh
			GEN_OP(*tbpp, *plen, op_ldrh_T0_T1);
			GEN_OP(*tbpp, *plen, op_signextend_halfword_T0);
		}
		//if (!state->is_XScale) {
		if (state->abort_model > 1) {
			gen_op_test_dataabort_im(state, tbpp, plen, op_movl_reg_Tx[0][rd].len);
		}
		gen_op_movl_reg_Tx(state, tbpp, plen, rd, 0);
	}
	else {
		//strh
		gen_op_movl_Tx_reg(state, tbpp, plen, 0, rd);
		GEN_OP(*tbpp, *plen, op_strh_T0_T1);
	}
	if (!(insn & (1 << 24))) {
		gen_op_add_datah_offset(state, tbpp, plen, insn);
		gen_op_movl_reg_Tx(state, tbpp, plen, rn, 1);
	}
	else if (insn & (1 << 21)) {
		gen_op_movl_reg_Tx(state, tbpp, plen, rn, 1);
	}
	//if (!state->is_XScale) {
	if (state->abort_model > 1) {
		GEN_OP(*tbpp, *plen, op_test_dataabort_ret);
	}
}

static __inline__ void
gen_op_b_offset(ARMul_State *state, uint8_t **tbpp, int *plen, ARMword offset)
{
	GEN_OP(*tbpp, *plen, op_b_offset);
	offset += 4;
	if (*tbpp) {
		memcpy(*tbpp, &offset, sizeof(offset));
		*tbpp += sizeof(offset);
	}
	*plen += sizeof(offset);
	state->trap = 1;
}

static __inline__ void
gen_op_bl_offset(ARMul_State *state, uint8_t **tbpp, int *plen, ARMword offset)
{
	GEN_OP(*tbpp, *plen, op_bl_offset);
	offset += 4;
	if (*tbpp) {
		memcpy(*tbpp, &offset, sizeof(offset));
		*tbpp += sizeof(offset);
	}
	*plen += sizeof(offset);
	state->trap = 1;
}

#endif	//_ARM2X86_OTHER_H_