In theory this should never happen, as all such instructions
are illegal. This is checked in e.g. gen_lea_mode and
gen_ea_mode_fp but not here. In case something higher up
isn't checking modes properly, return NULL_QREG. This will
result in an illegal instruction exception being raised.
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
target/m68k/translate.c | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/target/m68k/translate.c b/target/m68k/translate.c
index 3055d2d246..7a87811427 100644
--- a/target/m68k/translate.c
+++ b/target/m68k/translate.c
@@ -898,6 +898,10 @@ static TCGv gen_ea_mode(CPUM68KState *env, DisasContext
*s, int mode, int reg0,
case 3: /* pc index+displacement. */
goto do_indirect;
case 4: /* Immediate. */
+ /* Should never be used for an output or RMW input. */
+ if (what == EA_STORE || addrp) {
+ return NULL_QREG;
+ }
/* Sign extend values for consistency. */
switch (opsize) {
case OS_BYTE:
--
2.34.1
