The linux kernel's trap tables vector all unassigned trap
numbers to BAD_TRAP, which then raises SIGILL.
Tested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reported-by: Ilya Leoshkevich <iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
linux-user/sparc/cpu_loop.c | 8 ++++++++
1 file changed, 8 insertions(+)
diff --git a/linux-user/sparc/cpu_loop.c b/linux-user/sparc/cpu_loop.c
index 434c90a55f..c120c42278 100644
--- a/linux-user/sparc/cpu_loop.c
+++ b/linux-user/sparc/cpu_loop.c
@@ -248,6 +248,14 @@ void cpu_loop (CPUSPARCState *env)
cpu_exec_step_atomic(cs);
break;
default:
+ /*
+ * Most software trap numbers vector to BAD_TRAP.
+ * Handle anything not explicitly matched above.
+ */
+ if (trapnr >= TT_TRAP && trapnr <= TT_TRAP + 0x7f) {
+ force_sig_fault(TARGET_SIGILL, ILL_ILLTRP, env->pc);
+ break;
+ }
fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
cpu_dump_state(cs, stderr, 0);
exit(EXIT_FAILURE);
--
2.34.1