diff options
Diffstat (limited to 'lib/libc/powerpc/sys/cerror.S')
| -rw-r--r-- | lib/libc/powerpc/sys/cerror.S | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/lib/libc/powerpc/sys/cerror.S b/lib/libc/powerpc/sys/cerror.S new file mode 100644 index 0000000..7667cb8 --- /dev/null +++ b/lib/libc/powerpc/sys/cerror.S @@ -0,0 +1,57 @@ +/*- + * Copyright (c) 2002 Peter Grehan. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + */ +/* $NetBSD: cerror.S,v 1.5 2000/01/27 14:58:48 kleink Exp $ */ + +#include <machine/asm.h> +__FBSDID("$FreeBSD$"); + +#include "SYS.h" + + .globl HIDENAME(cerror) + .globl CNAME(__error) + + /* + * The __error() function is thread aware. For non-threaded + * programs and the initial threaded in threaded programs, + * it returns a pointer to the global errno variable. + */ +HIDENAME(cerror): + mflr %r0 + stwu %r1,-16(%r1) /* allocate new stack frame */ + stw %r0,20(%r1) /* and save lr, r31 */ + stw %r31,8(%r1) + mr %r31,%r3 /* stash errval in callee-saved register */ + bl PIC_PLT(CNAME(__error)) + stw %r31,0(%r3) /* store errval into &errno */ + lwz %r0,20(%r1) + lwz %r31,8(%r1) + mtlr %r0 + la %r1,16(%r1) + li %r3,-1 + li %r4,-1 + blr /* return to callers caller */ + + .section .note.GNU-stack,"",%progbits |
