[Stable-11.1.1 01/42] linux-user/sh4: Deliver SIGILL on invalid instruction

From: Mikulas Patocka <[email protected]>

On invalid instruction, deliver SIGILL rather than crashing the whole
process unconditionally.

Cc: [email protected]
Signed-off-by: Mikulas Patocka <[email protected]>
Reviewed-by: Yoshinori Sato <[email protected]>
Reviewed-by: Richard Henderson <[email protected]>
Signed-off-by: Helge Deller <[email protected]>
(cherry picked from commit bc4681990bb6b065e78e7564cb431e44dd148b88)
Signed-off-by: Michael Tokarev <[email protected]>

diff --git a/linux-user/sh4/cpu_loop.c b/linux-user/sh4/cpu_loop.c
index ee2958d0d93..0815b9c9bf3 100644
--- a/linux-user/sh4/cpu_loop.c
+++ b/linux-user/sh4/cpu_loop.c
@@ -64,6 +64,13 @@ void cpu_loop(CPUSH4State *env)
             cpu_exec_step_atomic(cs);
             arch_interrupt = false;
             break;
+        case 0x180:
+            /* Illegal instruction */
+            /* fallthrough */
+        case 0x1a0:
+            /* Illegal instruction in delay slot */
+            force_sig_fault(TARGET_SIGILL, TARGET_ILL_ILLOPC, env->pc);
+            break;
         default:
             fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
             cpu_dump_state(cs, stderr, 0);
-- 
2.47.3