Commit 29cf437d authored by Laurent Vivier's avatar Laurent Vivier
Browse files

target-m68k: add exg ops 



Suggested-by: default avatarRichard Henderson <rth@twiddle.net>
Signed-off-by: default avatarLaurent Vivier <laurent@vivier.eu>
Reviewed-by: default avatarRichard Henderson <rth@twiddle.net>
parent c630e436

target-m68k/translate.c

+30 −0
Original line number Diff line number Diff line
@@ -2021,6 +2021,33 @@ DISAS_INSN(eor) 
    DEST_EA(env, insn, OS_LONG, dest, &addr);

}



static void do_exg(TCGv reg1, TCGv reg2)

{

    TCGv temp = tcg_temp_new();

    tcg_gen_mov_i32(temp, reg1);

    tcg_gen_mov_i32(reg1, reg2);

    tcg_gen_mov_i32(reg2, temp);

    tcg_temp_free(temp);

}



DISAS_INSN(exg_aa)

{

    /* exchange Dx and Dy */

    do_exg(DREG(insn, 9), DREG(insn, 0));

}



DISAS_INSN(exg_dd)

{

    /* exchange Ax and Ay */

    do_exg(AREG(insn, 9), AREG(insn, 0));

}



DISAS_INSN(exg_da)

{

    /* exchange Dx and Ay */

    do_exg(DREG(insn, 9), AREG(insn, 0));

}



DISAS_INSN(and)

{

    TCGv src;
@@ -3154,6 +3181,9 @@ void register_m68k_insns (CPUM68KState *env) 
    INSN(cmpa,      b0c0, f0c0, M68000);

    INSN(eor,       b180, f1c0, CF_ISA_A);

    BASE(and,       c000, f000);

    INSN(exg_dd,    c140, f1f8, M68000);

    INSN(exg_aa,    c148, f1f8, M68000);

    INSN(exg_da,    c188, f1f8, M68000);

    BASE(mulw,      c0c0, f0c0);

    BASE(addsub,    d000, f000);

    INSN(addx,      d180, f1f8, CF_ISA_A);