[src/trunk]: src/lib/libpthread/arch/sh3 Cause SIGTRAP if NOTREACHED code is ...

[uwe <uwe%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/2ecc9e7331b3
branches:  trunk
changeset: 555446:2ecc9e7331b3
user:      uwe <uwe%NetBSD.org@localhost>
date:      Mon Nov 17 22:38:11 2003 +0000

description:
Cause SIGTRAP if NOTREACHED code is reached.

diffstat:

 lib/libpthread/arch/sh3/_context_u.S |  16 +++++++++++-----
 1 files changed, 11 insertions(+), 5 deletions(-)

diffs (51 lines):

diff -r b173994bad89 -r 2ecc9e7331b3 lib/libpthread/arch/sh3/_context_u.S
--- a/lib/libpthread/arch/sh3/_context_u.S      Mon Nov 17 22:34:16 2003 +0000
+++ b/lib/libpthread/arch/sh3/_context_u.S      Mon Nov 17 22:38:11 2003 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: _context_u.S,v 1.3 2003/07/05 23:01:25 uwe Exp $ */
+/*     $NetBSD: _context_u.S,v 1.4 2003/11/17 22:38:11 uwe Exp $ */
 
 /*
  * Copyright (c) 2003 Christian P. Groessler
@@ -32,6 +32,12 @@
 
 
 /*
+ * Enter debugger or die with SIGTRAP if "notreached" code is reached
+ */
+#define NOTREACHED     trapa #0xc3
+
+
+/*
  * Only save/restore registers that are callee saved, i.e for which
  * gcc has call_used_regs[reg] == 0.
  */
@@ -101,7 +107,7 @@
        add     #(_REG_R15 * 4), r1                                     ; \
        jmp     @r2                                                     ; \
         mov.l  @r1, r15                                                ; \
-       /* NOTREACHED */                                                  \
+       NOTREACHED                                                      ; \
                                                                          \
 1:     /* not a _UC_USER context, pass to setcontext(2) */               \
        CALL_SETCONTEXT(uc)                                               \
@@ -117,7 +123,7 @@
        mov.l   2f, r1                                                  ; \
 1:     bsrf    r1                                                      ; \
         MAYBE_MOV_UC_R4(uc)                                            ; \
-       /* NOTREACHED */                                                  \
+       NOTREACHED                                                      ; \
        .align 2                                                        ; \
 2: .long _C_LABEL(setcontext)-(1b+4)
 #else /* !PIC */
@@ -128,8 +134,8 @@
 #define CALL_SETCONTEXT(uc)                                              \
        mov.l   .L_setcontext, r1                                       ; \
        jsr     @r1                                                     ; \
-        MAYBE_MOV_UC_R4(uc)                                              \
-       /* NOTREACHED */
+        MAYBE_MOV_UC_R4(uc)                                            ; \
+       NOTREACHED
 #endif
 
 #define MAYBE_MOV_UC_R4(uc)                                              \