From: Mikulas Patocka <[email protected]> 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. Cc: [email protected] Signed-off-by: Mikulas Patocka <[email protected]> Message-Id: <[email protected]> Reviewed-by: Richard Henderson <[email protected]> Signed-off-by: Richard Henderson <[email protected]> --- linux-user/mips/cpu_loop.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/linux-user/mips/cpu_loop.c b/linux-user/mips/cpu_loop.c index 8735e58bad..990b03e727 100644 --- a/linux-user/mips/cpu_loop.c +++ b/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: + force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTOVF, env->active_tc.PC); + break; /* The code below was inspired by the MIPS Linux kernel trap * handling code in arch/mips/kernel/traps.c. */ -- 2.34.1
