aboutsummaryrefslogtreecommitdiff
path: root/target-m68k
diff options
context:
space:
mode:
authorLaurent Vivier <laurent@vivier.eu>2016-01-16 23:05:55 +0100
committerLaurent Vivier <laurent@vivier.eu>2016-10-28 10:38:48 +0200
commit29cf437da4eeacb46cd7076014d06c85ca47c91d (patch)
treeaf03efcbdcc7d63cdb0d7b77e95ea0c8cc90c0d4 /target-m68k
parentc630e436c0ed3adc3a858c328119daf6d1b3357f (diff)
downloadqemu-arm-29cf437da4eeacb46cd7076014d06c85ca47c91d.tar.gz
target-m68k: add exg ops
Suggested-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <rth@twiddle.net>
Diffstat (limited to 'target-m68k')
-rw-r--r--target-m68k/translate.c30
1 files changed, 30 insertions, 0 deletions
diff --git a/target-m68k/translate.c b/target-m68k/translate.c
index 0d3111d353..b407623548 100644
--- a/target-m68k/translate.c
+++ b/target-m68k/translate.c
@@ -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);