[src/trunk]: src/lib/libc/arch/vax/sys Fix a major botch in 1.4 (which I did ...

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

details:   https://anonhg.NetBSD.org/src/rev/7e5fdf5955db
branches:  trunk
changeset: 494091:7e5fdf5955db
user:      matt <matt%NetBSD.org@localhost>
date:      Sat Jul 01 05:21:12 2000 +0000

description:
Fix a major botch in 1.4 (which I did not do) which broke _brk and malloc.

diffstat:

 lib/libc/arch/vax/sys/brk.S |  12 ++++++------
 1 files changed, 6 insertions(+), 6 deletions(-)

diffs (31 lines):

diff -r 9564b688477b -r 7e5fdf5955db lib/libc/arch/vax/sys/brk.S
--- a/lib/libc/arch/vax/sys/brk.S       Sat Jul 01 03:35:07 2000 +0000
+++ b/lib/libc/arch/vax/sys/brk.S       Sat Jul 01 05:21:12 2000 +0000
@@ -33,7 +33,7 @@
 
 #if defined(SYSLIBC_SCCS) && !defined(lint)
        /* .asciz "@(#)brk.s    8.1 (Berkeley) 6/4/93" */
-       .asciz "$NetBSD: brk.S,v 1.8 2000/06/30 23:46:36 matt Exp $"
+       .asciz "$NetBSD: brk.S,v 1.9 2000/07/01 05:21:12 matt Exp $"
 #endif /* SYSLIBC_SCCS and not lint */
 
 #include "SYS.h"
@@ -46,13 +46,13 @@
 #endif
 
 ENTRY(_brk, 0)
-       cmpl    4(ap),_C_LABEL(__minbrk)
-       bgeq    ok
-       movl    _C_LABEL(__minbrk),4(ap)
-       chmk    $ SYS_break
+       cmpl    4(ap),_C_LABEL(__minbrk)        # gtr > _end 
+       bgeq    1f                              #   is fine
+       movl    _C_LABEL(__minbrk),4(ap)        # shrink back to _end
+1:     chmk    $ SYS_break                     # do it
        jcs     err
        movl    4(ap),CURBRK
-ok:    clrl    r0
+       clrl    r0
        ret
 err:
        jmp     CERROR+2