Deliver SIGTRAP, rather than SIGEMT, for trap instructions which are neither

debugger breakpoints nor compiler-generated divide by zero reports.

SIGEMT is a historical curiosity which makes no sense nowadays except on
PDP-11 and VAX hardware.

Discussed with imp@ and visa@ long ago.

diff --git a/sys/arch/mips64/mips64/trap.c b/sys/arch/mips64/mips64/trap.c
index ff253cd..1afcc27 100644 (file)
--- a/sys/arch/mips64/mips64/trap.c
+++ b/sys/arch/mips64/mips64/trap.c
@@ -1,4 +1,4 @@
-/*     $OpenBSD: trap.c,v 1.172 2024/09/20 02:00:46 jsg Exp $  */
+/*     $OpenBSD: trap.c,v 1.173 2024/10/16 18:40:52 miod Exp $ */
 
 /*
  * Copyright (c) 1988 University of Utah.
@@ -645,8 +645,8 @@ fault_common_no_miss:
                        sigexit(p, SIGABRT);
                        /* NOTREACHED */
                } else {
-                       signal = SIGEMT; /* Stuff it with something for now */
-                       sicode = 0;
+                       signal = SIGTRAP;
+                       sicode = TRAP_BRKPT;
                }
                break;
            }