Qemu mips userspace emulation crashes with "qemu: unhandled CPU exception
0x15 - aborting" when one of the integer arithmetic instructions detects
an overflow.
This patch fixes it so that it delivers SIGFPE with FPE_INTOVF instead.
Signed-off-by: Mikulas Patocka <mpato...@redhat.com>
Cc: qemu-sta...@nongnu.org
---
linux-user/mips/cpu_loop.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
Index: qemu/linux-user/mips/cpu_loop.c
===================================================================
--- qemu.orig/linux-user/mips/cpu_loop.c
+++ qemu/linux-user/mips/cpu_loop.c
@@ -180,7 +180,9 @@ done_syscall:
}
force_sig_fault(TARGET_SIGFPE, si_code, env->active_tc.PC);
break;
-
+ case EXCP_OVERFLOW:
+ do_tr_or_bp(env, BRK_OVERFLOW, false);
+ break;
/* The code below was inspired by the MIPS Linux kernel trap
* handling code in arch/mips/kernel/traps.c.
*/
