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Use A1 to save the return address, since A0 is no longer preserved across

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system calls.
This commit is contained in:
scw 2000-12-07 14:13:43 +00:00
parent 4cc90c99f2
commit c762ba1426
1 changed files with 13 additions and 13 deletions
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26
lib/libc/arch/m68k/sys/Ovfork.S
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@ -1,4 +1,4 @@
/* $NetBSD: Ovfork.S,v 1.11 1999/10/25 23:48:16 thorpej Exp $ */
/* $NetBSD: Ovfork.S,v 1.12 2000/12/07 14:13:43 scw Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
@ -43,7 +43,7 @@
#if 0
RCSID("from: @(#)Ovfork.s 5.1 (Berkeley) 5/12/90")
#else
RCSID("$NetBSD: Ovfork.S,v 1.11 1999/10/25 23:48:16 thorpej Exp $")
RCSID("$NetBSD: Ovfork.S,v 1.12 2000/12/07 14:13:43 scw Exp $")
#endif
#endif /* LIBC_SCCS and not lint */
@ -67,17 +67,17 @@ WARN_REFERENCES(vfork, \
*/
ENTRY(vfork)
movl %sp@+,%a0
movl %sp@+,%a1
movl #SYS_vfork,%d0
trap #0
jcs err
subql #1,%d1 /* from 1 to 0 in child, 0 to -1 in parent */
andl %d1,%d0
jmp %a0@
jmp %a1@
err:
#ifdef _REENTRANT
.globl _C_LABEL(__errno)
movl %a0,%sp@-
movl %a1,%sp@-
movl %d0,%sp@-
#if defined(PIC) && !defined(__ELF__)
movl #_C_LABEL(_GLOBAL_OFFSET_TABLE_),%a1
@ -93,22 +93,22 @@ err:
movl %d0,%a1
movl %sp@+,%a1@
#endif /* __SVR4_ABI__ */
movl %sp@+,%a0
movl %sp@+,%a1
#else
.globl _C_LABEL(errno)
#ifdef PIC
#ifdef __ELF__
lea %pc@(_GLOBAL_OFFSET_TABLE_@GOTPC),%a1
movl %a1@(_C_LABEL(errno)@GOT:w),%a1
lea %pc@(_GLOBAL_OFFSET_TABLE_@GOTPC),%a0
movl %a0@(_C_LABEL(errno)@GOT:w),%a0
#else
movl #_C_LABEL(_GLOBAL_OFFSET_TABLE_),%a1
lea %pc@(0,a1:l),%a1
movl %a1@(_C_LABEL(errno):w),%a1
movl #_C_LABEL(_GLOBAL_OFFSET_TABLE_),%a0
lea %pc@(0,a0:l),%a0
movl %a0@(_C_LABEL(errno):w),%a0
#endif
movl %d0,%a1@
movl %d0,%a0@
#else
movl %d0,_C_LABEL(errno)
#endif /* PIC */
#endif /* _REENTRANT */
moveq #-1,%d0
jmp %a0@
jmp %a1@