arm2x86_mem.h

这是Skyeye 0.9 版本的源代码

#ifndef _ARM2X86_MEM_H_
#define _ARM2X86_MEM_H_

#define LOADWORD_ALIGN(addr, data)	((data >> ((addr & 3) << 3)) | (data << (32 - ((addr & 3) << 3))))

extern op_table_t	op_ldr_T0_T1;
extern op_table_t	op_ldr_T2_T1;
extern op_table_t	op_ldrh_T0_T1;
extern op_table_t	op_ldrb_T0_T1;
extern op_table_t	op_ldrb_T2_T1;

extern op_table_t	op_str_T0_T1;
extern op_table_t	op_strh_T0_T1;
extern op_table_t	op_strb_T0_T1;

extern op_table_t	op_ldm_T1_T0;
extern op_table_t	op_stm_T1_T0;

extern op_table_t	op_ldm_user_T1_T0;
extern op_table_t	op_stm_user_T1_T0;

extern op_table_t	op_signextend_halfword_T0;
extern op_table_t	op_signextend_byte_T0;

extern int		arm2x86_mem_init();

static __inline__ void
gen_op_add_datah_offset(ARMul_State *state, uint8_t **tbpp, int *plen, ARMword insn)
{
	if (insn & (1 << 22)) {
		//immediate
		int	val = (insn & 0xf) | ((insn >> 4) & 0xf0);

		if (!(insn & (1 << 23)))
			val = -val;
		if (val != 0)
			gen_op_addl_T1_im(state, tbpp, plen, (ARMword)val);
	}
	else {
		//register
		ARMword	rm = (insn) & 0xf;

		gen_op_movl_Tx_reg(state, tbpp, plen, 2, rm);
		if (!(insn & (1 << 23)))
			GEN_OP(*tbpp, *plen, op_subl_T1_T2);
		else
			GEN_OP(*tbpp, *plen, op_addl_T1_T2);
	}
}

static __inline__ void
gen_op_add_data_offset(ARMul_State *state, uint8_t **tbpp, int *plen, ARMword insn)
{
	if (!(insn & (1 << 25))) {
		//immediate
		int	val = insn & 0xfff;

		if (!(insn & (1 << 23)))	//U
			val = -val;
		if (val != 0)
			gen_op_addl_T1_im(state, tbpp, plen, (ARMword)val);
	}
	else {
		//register
		ARMword	rm = (insn) & 0xf;
		ARMword	shift = (insn >> 7) & 0x1f;

		gen_op_movl_Tx_reg(state, tbpp, plen, 2, rm);
		if (shift != 0)
			gen_op_shift_T2_im(state, tbpp, plen, ((insn >> 5) & 3), shift);
		if (!(insn & (1 << 23)))	//U
			GEN_OP(*tbpp, *plen, op_subl_T1_T2);
		else
			GEN_OP(*tbpp, *plen, op_addl_T1_T2);
	}
}

#endif	//_ARM2X86_MEM_H_