[src/netbsd-3]: src/lib/libc/arch/sh3/sys Apply patch (requested by uwe in ti...

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

details:   https://anonhg.NetBSD.org/src/rev/3ff95302fbf5
branches:  netbsd-3
changeset: 577759:3ff95302fbf5
user:      tron <tron%NetBSD.org@localhost>
date:      Sun Jan 22 10:36:37 2006 +0000

description:
Apply patch (requested by uwe in ticket #1102):
Use JUMP_CERROR instead of messing with errno directly.
Simplify.  Add WARN_REFERENCES.

diffstat:

 lib/libc/arch/sh3/sys/Ovfork.S |  44 ++++++++++++-----------------------------
 1 files changed, 13 insertions(+), 31 deletions(-)

diffs (70 lines):

diff -r 0cb2fde6b6f3 -r 3ff95302fbf5 lib/libc/arch/sh3/sys/Ovfork.S
--- a/lib/libc/arch/sh3/sys/Ovfork.S    Sun Jan 22 10:27:45 2006 +0000
+++ b/lib/libc/arch/sh3/sys/Ovfork.S    Sun Jan 22 10:36:37 2006 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: Ovfork.S,v 1.5 2003/08/07 16:42:20 agc Exp $   */
+/*     $NetBSD: Ovfork.S,v 1.5.6.1 2006/01/22 10:36:37 tron Exp $      */
 
 /*-
  * Copyright (c) 1990 The Regents of the University of California.
@@ -36,11 +36,14 @@
 
 #include <machine/asm.h>
 #if defined(SYSLIBC_SCCS) && !defined(lint)
-       RCSID("$NetBSD: Ovfork.S,v 1.5 2003/08/07 16:42:20 agc Exp $")
+       RCSID("$NetBSD: Ovfork.S,v 1.5.6.1 2006/01/22 10:36:37 tron Exp $")
 #endif /* SYSLIBC_SCCS and not lint */
 
 #include "SYS.h"
 
+WARN_REFERENCES(vfork, \
+    "warning: reference to compatibility vfork(); include <unistd.h> for correct reference")
+
 /*
  * pid = vfork();
  *
@@ -49,36 +52,15 @@
  *
  */
 ENTRY(vfork)
-       sts     pr, r2          /* my rta into r2 */
-       mov.l   LSYS_vfork, r0
+       mov     #SYS_vfork, r0
        trapa   #0x80
        bf      err
-       add     #0xff, r1
-       and     r1, r0
-       jmp     @r2
-       nop
+
+       add     #0xff, r1       /* from 1 to 0 in child, 0 to -1 in parent */
+       rts
+        and    r1, r0          /* 0 in child, child pid in parent */
+
 err:
-#ifdef PIC
-       mov     r0, r2
-       mova    L_GOT, r0
-       mov.l   L_GOT, r1
-       add     r0, r1
-       mov.l   L_errno, r0
-       mov.l   @(r0, r1), r1
-       mov.l   r2, @r1
-#else
-       mov.l   L_errno, r1
-       mov.l   r0, @r1
-#endif
-       mov     #0xff, r0
-       jmp     @r2
-       nop
+       JUMP_CERROR
 
-       .align  2
-LSYS_vfork:    .long   SYS_vfork
-#ifdef PIC
-L_GOT:         .long   _GLOBAL_OFFSET_TABLE_
-L_errno:       .long   _C_LABEL(errno)@GOT
-#else
-L_errno:       .long   _C_LABEL(errno)
-#endif
+       SET_ENTRY_SIZE(vfork)