ops2.c

u-boot1.3.0的原码,从配了网络驱动和FLASH的驱动,并该用ESC竟如

    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x0f,0xbd
****************************************************************************/
void x86emuOp2_bsr(u8 X86EMU_UNUSED(op2))
{
    int mod, rl, rh;
    uint srcoffset;

    START_OF_INSTR();
    DECODE_PRINTF("BSF\n");
    FETCH_DECODE_MODRM(mod, rh, rl);
    if (mod < 3) {
	srcoffset = decode_rmXX_address(mod, rl);
	DECODE_PRINTF(",");
	if (M.x86.mode & SYSMODE_PREFIX_DATA) {
	    u32 srcval, *dstreg;

	    dstreg = DECODE_RM_LONG_REGISTER(rh);
	    TRACE_AND_STEP();
	    srcval = fetch_data_long(srcoffset);
	    CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
	    for(*dstreg = 31; *dstreg > 0; (*dstreg)--)
		if ((srcval >> *dstreg) & 1) break;
	} else {
	    u16 srcval, *dstreg;

	    dstreg = DECODE_RM_WORD_REGISTER(rh);
	    TRACE_AND_STEP();
	    srcval = fetch_data_word(srcoffset);
	    CONDITIONAL_SET_FLAG(srcval == 0, F_ZF);
	    for(*dstreg = 15; *dstreg > 0; (*dstreg)--)
		if ((srcval >> *dstreg) & 1) break;
	}
    } else {		 /* register to register */
	if (M.x86.mode & SYSMODE_PREFIX_DATA) {
	    u32 *srcreg, *dstreg;

	    srcreg = DECODE_RM_LONG_REGISTER(rl);
	    DECODE_PRINTF(",");
	    dstreg = DECODE_RM_LONG_REGISTER(rh);
	    TRACE_AND_STEP();
	    CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF);
	    for(*dstreg = 31; *dstreg > 0; (*dstreg)--)
		if ((*srcreg >> *dstreg) & 1) break;
	} else {
	    u16 *srcreg, *dstreg;

	    srcreg = DECODE_RM_WORD_REGISTER(rl);
	    DECODE_PRINTF(",");
	    dstreg = DECODE_RM_WORD_REGISTER(rh);
	    TRACE_AND_STEP();
	    CONDITIONAL_SET_FLAG(*srcreg == 0, F_ZF);
	    for(*dstreg = 15; *dstreg > 0; (*dstreg)--)
		if ((*srcreg >> *dstreg) & 1) break;
	}
    }
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x0f,0xbe
****************************************************************************/
void x86emuOp2_movsx_byte_R_RM(u8 X86EMU_UNUSED(op2))
{
    int mod, rl, rh;
    uint srcoffset;

    START_OF_INSTR();
    DECODE_PRINTF("MOVSX\t");
    FETCH_DECODE_MODRM(mod, rh, rl);
    if (mod < 3) {
	if (M.x86.mode & SYSMODE_PREFIX_DATA) {
	    u32 *destreg;
	    u32 srcval;

	    destreg = DECODE_RM_LONG_REGISTER(rh);
	    DECODE_PRINTF(",");
	    srcoffset = decode_rmXX_address(mod, rl);
	    srcval = (s32)((s8)fetch_data_byte(srcoffset));
	    DECODE_PRINTF("\n");
	    TRACE_AND_STEP();
	    *destreg = srcval;
	} else {
	    u16 *destreg;
	    u16 srcval;

	    destreg = DECODE_RM_WORD_REGISTER(rh);
	    DECODE_PRINTF(",");
	    srcoffset = decode_rmXX_address(mod, rl);
	    srcval = (s16)((s8)fetch_data_byte(srcoffset));
	    DECODE_PRINTF("\n");
	    TRACE_AND_STEP();
	    *destreg = srcval;
	}
    } else {			 /* register to register */
	if (M.x86.mode & SYSMODE_PREFIX_DATA) {
	    u32 *destreg;
	    u8	*srcreg;

	    destreg = DECODE_RM_LONG_REGISTER(rh);
	    DECODE_PRINTF(",");
	    srcreg = DECODE_RM_BYTE_REGISTER(rl);
	    DECODE_PRINTF("\n");
	    TRACE_AND_STEP();
	    *destreg = (s32)((s8)*srcreg);
	} else {
	    u16 *destreg;
	    u8	*srcreg;

	    destreg = DECODE_RM_WORD_REGISTER(rh);
	    DECODE_PRINTF(",");
	    srcreg = DECODE_RM_BYTE_REGISTER(rl);
	    DECODE_PRINTF("\n");
	    TRACE_AND_STEP();
	    *destreg = (s16)((s8)*srcreg);
	}
    }
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/****************************************************************************
REMARKS:
Handles opcode 0x0f,0xbf
****************************************************************************/
void x86emuOp2_movsx_word_R_RM(u8 X86EMU_UNUSED(op2))
{
    int mod, rl, rh;
    uint srcoffset;
    u32 *destreg;
    u32 srcval;
    u16 *srcreg;

    START_OF_INSTR();
    DECODE_PRINTF("MOVSX\t");
    FETCH_DECODE_MODRM(mod, rh, rl);
    if (mod < 3) {
	destreg = DECODE_RM_LONG_REGISTER(rh);
	DECODE_PRINTF(",");
	srcoffset = decode_rmXX_address(mod, rl);
	srcval = (s32)((s16)fetch_data_word(srcoffset));
	DECODE_PRINTF("\n");
	TRACE_AND_STEP();
	*destreg = srcval;
    } else {			 /* register to register */
	destreg = DECODE_RM_LONG_REGISTER(rh);
	DECODE_PRINTF(",");
	srcreg = DECODE_RM_WORD_REGISTER(rl);
	DECODE_PRINTF("\n");
	TRACE_AND_STEP();
	*destreg = (s32)((s16)*srcreg);
    }
    DECODE_CLEAR_SEGOVR();
    END_OF_INSTR();
}

/***************************************************************************
 * Double byte operation code table:
 **************************************************************************/
void (*x86emu_optab2[256])(u8) __attribute__((section(".got2"))) =
{
/*  0x00 */ x86emuOp2_illegal_op,  /* Group F (ring 0 PM)      */
/*  0x01 */ x86emuOp2_illegal_op,  /* Group G (ring 0 PM)      */
/*  0x02 */ x86emuOp2_illegal_op,  /* lar (ring 0 PM)	       */
/*  0x03 */ x86emuOp2_illegal_op,  /* lsl (ring 0 PM)	       */
/*  0x04 */ x86emuOp2_illegal_op,
/*  0x05 */ x86emuOp2_illegal_op,  /* loadall (undocumented)   */
/*  0x06 */ x86emuOp2_illegal_op,  /* clts (ring 0 PM)	       */
/*  0x07 */ x86emuOp2_illegal_op,  /* loadall (undocumented)   */
/*  0x08 */ x86emuOp2_illegal_op,  /* invd (ring 0 PM)	       */
/*  0x09 */ x86emuOp2_illegal_op,  /* wbinvd (ring 0 PM)       */
/*  0x0a */ x86emuOp2_illegal_op,
/*  0x0b */ x86emuOp2_illegal_op,
/*  0x0c */ x86emuOp2_illegal_op,
/*  0x0d */ x86emuOp2_illegal_op,
/*  0x0e */ x86emuOp2_illegal_op,
/*  0x0f */ x86emuOp2_illegal_op,

/*  0x10 */ x86emuOp2_illegal_op,
/*  0x11 */ x86emuOp2_illegal_op,
/*  0x12 */ x86emuOp2_illegal_op,
/*  0x13 */ x86emuOp2_illegal_op,
/*  0x14 */ x86emuOp2_illegal_op,
/*  0x15 */ x86emuOp2_illegal_op,
/*  0x16 */ x86emuOp2_illegal_op,
/*  0x17 */ x86emuOp2_illegal_op,
/*  0x18 */ x86emuOp2_illegal_op,
/*  0x19 */ x86emuOp2_illegal_op,
/*  0x1a */ x86emuOp2_illegal_op,
/*  0x1b */ x86emuOp2_illegal_op,
/*  0x1c */ x86emuOp2_illegal_op,
/*  0x1d */ x86emuOp2_illegal_op,
/*  0x1e */ x86emuOp2_illegal_op,
/*  0x1f */ x86emuOp2_illegal_op,

/*  0x20 */ x86emuOp2_illegal_op,  /* mov reg32,creg (ring 0 PM) */
/*  0x21 */ x86emuOp2_illegal_op,  /* mov reg32,dreg (ring 0 PM) */
/*  0x22 */ x86emuOp2_illegal_op,  /* mov creg,reg32 (ring 0 PM) */
/*  0x23 */ x86emuOp2_illegal_op,  /* mov dreg,reg32 (ring 0 PM) */
/*  0x24 */ x86emuOp2_illegal_op,  /* mov reg32,treg (ring 0 PM) */
/*  0x25 */ x86emuOp2_illegal_op,
/*  0x26 */ x86emuOp2_illegal_op,  /* mov treg,reg32 (ring 0 PM) */
/*  0x27 */ x86emuOp2_illegal_op,
/*  0x28 */ x86emuOp2_illegal_op,
/*  0x29 */ x86emuOp2_illegal_op,
/*  0x2a */ x86emuOp2_illegal_op,
/*  0x2b */ x86emuOp2_illegal_op,
/*  0x2c */ x86emuOp2_illegal_op,
/*  0x2d */ x86emuOp2_illegal_op,
/*  0x2e */ x86emuOp2_illegal_op,
/*  0x2f */ x86emuOp2_illegal_op,

/*  0x30 */ x86emuOp2_illegal_op,
/*  0x31 */ x86emuOp2_illegal_op,
/*  0x32 */ x86emuOp2_illegal_op,
/*  0x33 */ x86emuOp2_illegal_op,
/*  0x34 */ x86emuOp2_illegal_op,
/*  0x35 */ x86emuOp2_illegal_op,
/*  0x36 */ x86emuOp2_illegal_op,
/*  0x37 */ x86emuOp2_illegal_op,
/*  0x38 */ x86emuOp2_illegal_op,
/*  0x39 */ x86emuOp2_illegal_op,
/*  0x3a */ x86emuOp2_illegal_op,
/*  0x3b */ x86emuOp2_illegal_op,
/*  0x3c */ x86emuOp2_illegal_op,
/*  0x3d */ x86emuOp2_illegal_op,
/*  0x3e */ x86emuOp2_illegal_op,
/*  0x3f */ x86emuOp2_illegal_op,

/*  0x40 */ x86emuOp2_illegal_op,
/*  0x41 */ x86emuOp2_illegal_op,
/*  0x42 */ x86emuOp2_illegal_op,
/*  0x43 */ x86emuOp2_illegal_op,
/*  0x44 */ x86emuOp2_illegal_op,
/*  0x45 */ x86emuOp2_illegal_op,
/*  0x46 */ x86emuOp2_illegal_op,
/*  0x47 */ x86emuOp2_illegal_op,
/*  0x48 */ x86emuOp2_illegal_op,
/*  0x49 */ x86emuOp2_illegal_op,
/*  0x4a */ x86emuOp2_illegal_op,
/*  0x4b */ x86emuOp2_illegal_op,
/*  0x4c */ x86emuOp2_illegal_op,
/*  0x4d */ x86emuOp2_illegal_op,
/*  0x4e */ x86emuOp2_illegal_op,
/*  0x4f */ x86emuOp2_illegal_op,

/*  0x50 */ x86emuOp2_illegal_op,
/*  0x51 */ x86emuOp2_illegal_op,
/*  0x52 */ x86emuOp2_illegal_op,
/*  0x53 */ x86emuOp2_illegal_op,
/*  0x54 */ x86emuOp2_illegal_op,
/*  0x55 */ x86emuOp2_illegal_op,
/*  0x56 */ x86emuOp2_illegal_op,
/*  0x57 */ x86emuOp2_illegal_op,
/*  0x58 */ x86emuOp2_illegal_op,
/*  0x59 */ x86emuOp2_illegal_op,
/*  0x5a */ x86emuOp2_illegal_op,
/*  0x5b */ x86emuOp2_illegal_op,
/*  0x5c */ x86emuOp2_illegal_op,
/*  0x5d */ x86emuOp2_illegal_op,
/*  0x5e */ x86emuOp2_illegal_op,
/*  0x5f */ x86emuOp2_illegal_op,

/*  0x60 */ x86emuOp2_illegal_op,
/*  0x61 */ x86emuOp2_illegal_op,
/*  0x62 */ x86emuOp2_illegal_op,
/*  0x63 */ x86emuOp2_illegal_op,
/*  0x64 */ x86emuOp2_illegal_op,
/*  0x65 */ x86emuOp2_illegal_op,
/*  0x66 */ x86emuOp2_illegal_op,
/*  0x67 */ x86emuOp2_illegal_op,
/*  0x68 */ x86emuOp2_illegal_op,
/*  0x69 */ x86emuOp2_illegal_op,
/*  0x6a */ x86emuOp2_illegal_op,
/*  0x6b */ x86emuOp2_illegal_op,
/*  0x6c */ x86emuOp2_illegal_op,
/*  0x6d */ x86emuOp2_illegal_op,
/*  0x6e */ x86emuOp2_illegal_op,
/*  0x6f */ x86emuOp2_illegal_op,

/*  0x70 */ x86emuOp2_illegal_op,
/*  0x71 */ x86emuOp2_illegal_op,
/*  0x72 */ x86emuOp2_illegal_op,
/*  0x73 */ x86emuOp2_illegal_op,
/*  0x74 */ x86emuOp2_illegal_op,
/*  0x75 */ x86emuOp2_illegal_op,
/*  0x76 */ x86emuOp2_illegal_op,
/*  0x77 */ x86emuOp2_illegal_op,
/*  0x78 */ x86emuOp2_illegal_op,
/*  0x79 */ x86emuOp2_illegal_op,
/*  0x7a */ x86emuOp2_illegal_op,
/*  0x7b */ x86emuOp2_illegal_op,
/*  0x7c */ x86emuOp2_illegal_op,
/*  0x7d */ x86emuOp2_illegal_op,
/*  0x7e */ x86emuOp2_illegal_op,
/*  0x7f */ x86emuOp2_illegal_op,

/*  0x80 */ x86emuOp2_long_jump,
/*  0x81 */ x86emuOp2_long_jump,
/*  0x82 */ x86emuOp2_long_jump,
/*  0x83 */ x86emuOp2_long_jump,
/*  0x84 */ x86emuOp2_long_jump,
/*  0x85 */ x86emuOp2_long_jump,
/*  0x86 */ x86emuOp2_long_jump,
/*  0x87 */ x86emuOp2_long_jump,
/*  0x88 */ x86emuOp2_long_jump,
/*  0x89 */ x86emuOp2_long_jump,
/*  0x8a */ x86emuOp2_long_jump,
/*  0x8b */ x86emuOp2_long_jump,
/*  0x8c */ x86emuOp2_long_jump,
/*  0x8d */ x86emuOp2_long_jump,
/*  0x8e */ x86emuOp2_long_jump,
/*  0x8f */ x86emuOp2_long_jump,

/*  0x90 */ x86emuOp2_set_byte,
/*  0x91 */ x86emuOp2_set_byte,
/*  0x92 */ x86emuOp2_set_byte,
/*  0x93 */ x86emuOp2_set_byte,
/*  0x94 */ x86emuOp2_set_byte,
/*  0x95 */ x86emuOp2_set_byte,
/*  0x96 */ x86emuOp2_set_byte,
/*  0x97 */ x86emuOp2_set_byte,
/*  0x98 */ x86emuOp2_set_byte,
/*  0x99 */ x86emuOp2_set_byte,
/*  0x9a */ x86emuOp2_set_byte,
/*  0x9b */ x86emuOp2_set_byte,
/*  0x9c */ x86emuOp2_set_byte,
/*  0x9d */ x86emuOp2_set_byte,
/*  0x9e */ x86emuOp2_set_byte,
/*  0x9f */ x86emuOp2_set_byte,

/*  0xa0 */ x86emuOp2_push_FS,
/*  0xa1 */ x86emuOp2_pop_FS,
/*  0xa2 */ x86emuOp2_illegal_op,
/*  0xa3 */ x86emuOp2_bt_R,
/*  0xa4 */ x86emuOp2_shld_IMM,
/*  0xa5 */ x86emuOp2_shld_CL,
/*  0xa6 */ x86emuOp2_illegal_op,
/*  0xa7 */ x86emuOp2_illegal_op,
/*  0xa8 */ x86emuOp2_push_GS,
/*  0xa9 */ x86emuOp2_pop_GS,
/*  0xaa */ x86emuOp2_illegal_op,
/*  0xab */ x86emuOp2_bt_R,
/*  0xac */ x86emuOp2_shrd_IMM,
/*  0xad */ x86emuOp2_shrd_CL,
/*  0xae */ x86emuOp2_illegal_op,
/*  0xaf */ x86emuOp2_imul_R_RM,

/*  0xb0 */ x86emuOp2_illegal_op,  /* TODO: cmpxchg */
/*  0xb1 */ x86emuOp2_illegal_op,  /* TODO: cmpxchg */
/*  0xb2 */ x86emuOp2_lss_R_IMM,
/*  0xb3 */ x86emuOp2_btr_R,
/*  0xb4 */ x86emuOp2_lfs_R_IMM,
/*  0xb5 */ x86emuOp2_lgs_R_IMM,
/*  0xb6 */ x86emuOp2_movzx_byte_R_RM,
/*  0xb7 */ x86emuOp2_movzx_word_R_RM,
/*  0xb8 */ x86emuOp2_illegal_op,
/*  0xb9 */ x86emuOp2_illegal_op,
/*  0xba */ x86emuOp2_btX_I,
/*  0xbb */ x86emuOp2_btc_R,
/*  0xbc */ x86emuOp2_bsf,
/*  0xbd */ x86emuOp2_bsr,
/*  0xbe */ x86emuOp2_movsx_byte_R_RM,
/*  0xbf */ x86emuOp2_movsx_word_R_RM,

/*  0xc0 */ x86emuOp2_illegal_op,  /* TODO: xadd */
/*  0xc1 */ x86emuOp2_illegal_op,  /* TODO: xadd */
/*  0xc2 */ x86emuOp2_illegal_op,
/*  0xc3 */ x86emuOp2_illegal_op,
/*  0xc4 */ x86emuOp2_illegal_op,
/*  0xc5 */ x86emuOp2_illegal_op,
/*  0xc6 */ x86emuOp2_illegal_op,
/*  0xc7 */ x86emuOp2_illegal_op,
/*  0xc8 */ x86emuOp2_illegal_op,  /* TODO: bswap */
/*  0xc9 */ x86emuOp2_illegal_op,  /* TODO: bswap */
/*  0xca */ x86emuOp2_illegal_op,  /* TODO: bswap */
/*  0xcb */ x86emuOp2_illegal_op,  /* TODO: bswap */
/*  0xcc */ x86emuOp2_illegal_op,  /* TODO: bswap */
/*  0xcd */ x86emuOp2_illegal_op,  /* TODO: bswap */
/*  0xce */ x86emuOp2_illegal_op,  /* TODO: bswap */
/*  0xcf */ x86emuOp2_illegal_op,  /* TODO: bswap */

/*  0xd0 */ x86emuOp2_illegal_op,
/*  0xd1 */ x86emuOp2_illegal_op,
/*  0xd2 */ x86emuOp2_illegal_op,
/*  0xd3 */ x86emuOp2_illegal_op,
/*  0xd4 */ x86emuOp2_illegal_op,
/*  0xd5 */ x86emuOp2_illegal_op,
/*  0xd6 */ x86emuOp2_illegal_op,
/*  0xd7 */ x86emuOp2_illegal_op,
/*  0xd8 */ x86emuOp2_illegal_op,
/*  0xd9 */ x86emuOp2_illegal_op,
/*  0xda */ x86emuOp2_illegal_op,
/*  0xdb */ x86emuOp2_illegal_op,
/*  0xdc */ x86emuOp2_illegal_op,
/*  0xdd */ x86emuOp2_illegal_op,
/*  0xde */ x86emuOp2_illegal_op,
/*  0xdf */ x86emuOp2_illegal_op,

/*  0xe0 */ x86emuOp2_illegal_op,
/*  0xe1 */ x86emuOp2_illegal_op,
/*  0xe2 */ x86emuOp2_illegal_op,
/*  0xe3 */ x86emuOp2_illegal_op,
/*  0xe4 */ x86emuOp2_illegal_op,
/*  0xe5 */ x86emuOp2_illegal_op,
/*  0xe6 */ x86emuOp2_illegal_op,
/*  0xe7 */ x86emuOp2_illegal_op,
/*  0xe8 */ x86emuOp2_illegal_op,
/*  0xe9 */ x86emuOp2_illegal_op,
/*  0xea */ x86emuOp2_illegal_op,
/*  0xeb */ x86emuOp2_illegal_op,
/*  0xec */ x86emuOp2_illegal_op,
/*  0xed */ x86emuOp2_illegal_op,
/*  0xee */ x86emuOp2_illegal_op,
/*  0xef */ x86emuOp2_illegal_op,

/*  0xf0 */ x86emuOp2_illegal_op,
/*  0xf1 */ x86emuOp2_illegal_op,
/*  0xf2 */ x86emuOp2_illegal_op,
/*  0xf3 */ x86emuOp2_illegal_op,
/*  0xf4 */ x86emuOp2_illegal_op,
/*  0xf5 */ x86emuOp2_illegal_op,
/*  0xf6 */ x86emuOp2_illegal_op,
/*  0xf7 */ x86emuOp2_illegal_op,
/*  0xf8 */ x86emuOp2_illegal_op,
/*  0xf9 */ x86emuOp2_illegal_op,
/*  0xfa */ x86emuOp2_illegal_op,
/*  0xfb */ x86emuOp2_illegal_op,
/*  0xfc */ x86emuOp2_illegal_op,
/*  0xfd */ x86emuOp2_illegal_op,
/*  0xfe */ x86emuOp2_illegal_op,
/*  0xff */ x86emuOp2_illegal_op,
};

#endif