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Changed so that when __REENTRANT is defined, cerror calls __errno() 

for the address of a variable used to store the error number instead
of writing to the global errno.

In a multi-threaded program, __errno() will return a pointer to a
thread-specific variable.
This commit is contained in:
jtc 1996-11-07 05:16:41 +00:00
parent 89e06b9449
commit f1af62ef3d
1 changed files with 16 additions and 2 deletions
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18
lib/libc/arch/m68k/sys/cerror.S
View File

@ -1,4 +1,4 @@
/* $NetBSD: cerror.S,v 1.4 1995/12/13 22:17:54 thorpej Exp $ */
/* $NetBSD: cerror.S,v 1.5 1996/11/07 05:16:41 jtc Exp $ */
/*-
* Copyright (c) 1990 The Regents of the University of California.
@ -43,13 +43,26 @@
#if 0
RCSID("from: @(#)cerror.s 5.1 (Berkeley) 5/12/90")
#else
RCSID("$NetBSD: cerror.S,v 1.4 1995/12/13 22:17:54 thorpej Exp $")
RCSID("$NetBSD: cerror.S,v 1.5 1996/11/07 05:16:41 jtc Exp $")
#endif
#endif /* LIBC_SCCS and not lint */
.even
.globl _errno
cerror:
#ifdef __REENTRANT
movl d0,sp@-
#ifdef PIC
movl #__GLOBAL_OFFSET_TABLE_,a0
lea pc@(0,a0:l),a0
movl a0@(___errno:l),a0
jsr a0@
#else
jbsr ___errno
#endif
movl d0,a0
movl sp@+,a0@
#else
#ifdef PIC
movl #__GLOBAL_OFFSET_TABLE_,a0
lea pc@(0,a0:l),a0
@ -58,6 +71,7 @@ cerror:
#else
movl d0,_errno
#endif
#endif /* __REENTRANT */
movl #-1,d0
movl #-1,d1
rts