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freebsd-dev/lib/libc/sparc64/SYS.h

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Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
/*-
* Copyright (c) 1990 The Regents of the University of California.
* All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* William Jolitz.
*
* 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.
Renumber copyright clause 4 Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
2017-02-28 23:42:47 +00:00
* 3. Neither the name of the University nor the names of its contributors
Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
Fix the style of the SCM ID's. I believe have made all of libc .h's as consistent as possible.
2002-03-22 23:42:05 +00:00
* @(#)SYS.h 5.5 (Berkeley) 5/7/91
Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
* from: FreeBSD: src/lib/libc/i386/SYS.h,v 1.20 2001/01/29
* $FreeBSD$
*/
#include <sys/syscall.h>
#include <machine/asm.h>
Include utrap.h for soft trap types.
2001-12-29 06:36:07 +00:00
#include <machine/utrap.h>
Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
#define ERROR() \
mov %o7, %g1 ; \
call HIDENAME(cerror) ; \
mov %g1, %o7
#define _SYSENTRY(x) \
ENTRY(__CONCAT(__sys_,x)) ; \
.weak CNAME(x) ; \
Add .type and .size pseudo-ops to system call macros so that dynamic binaries will link. They must be used for weak symbols as well as strong ones.
2001-11-18 04:29:20 +00:00
.type CNAME(x),@function ; \
Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
.set CNAME(x),CNAME(__CONCAT(__sys_,x)) ; \
.weak CNAME(__CONCAT(_,x)) ; \
Add .type and .size pseudo-ops to system call macros so that dynamic binaries will link. They must be used for weak symbols as well as strong ones.
2001-11-18 04:29:20 +00:00
.type CNAME(__CONCAT(_,x)), @function ; \
Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
.set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x))
Add .type and .size pseudo-ops to system call macros so that dynamic binaries will link. They must be used for weak symbols as well as strong ones.
2001-11-18 04:29:20 +00:00
#define _SYSEND(x) \
.size CNAME(__CONCAT(__sys_,x)), . - CNAME(__CONCAT(__sys_,x)) ; \
.size CNAME(__CONCAT(_,x)), . - CNAME(__CONCAT(__sys_,x)) ; \
.size CNAME(__CONCAT(,x)), . - CNAME(__CONCAT(__sys_,x))
Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
#define _SYSCALL(x) \
mov __CONCAT(SYS_,x), %g1 ; \
ta %xcc, ST_SYSCALL ; \
bcc,a,pt %xcc, 1f ; \
nop ; \
ERROR() ; \
1:
#define RSYSCALL(x) \
Add .type and .size pseudo-ops to system call macros so that dynamic binaries will link. They must be used for weak symbols as well as strong ones.
2001-11-18 04:29:20 +00:00
_SYSENTRY(x) ; \
_SYSCALL(x) ; \
Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
retl ; \
Add .type and .size pseudo-ops to system call macros so that dynamic binaries will link. They must be used for weak symbols as well as strong ones.
2001-11-18 04:29:20 +00:00
nop ; \
_SYSEND(x)
Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
#define PSEUDO(x) \
ENTRY(__CONCAT(__sys_,x)) ; \
.weak CNAME(__CONCAT(_,x)) ; \
Add .type and .size pseudo-ops to system call macros so that dynamic binaries will link. They must be used for weak symbols as well as strong ones.
2001-11-18 04:29:20 +00:00
.type CNAME(__CONCAT(_,x)),@function ; \
Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
.set CNAME(__CONCAT(_,x)),CNAME(__CONCAT(__sys_,x)) ; \
Adjust the syscall stub macros to be consistent in their meaning. In particular: SYSCALL() makes a syscall, with errno handling, and continues execution directly after the macro in the non-error case. RSYSCALL() is just like SYSCALL(), but returns after success. Both SYSCALL(name) and RSYSCALL(name) export "__sys_name" as a strong symbol, with "_name" and "name" as weak aliases. PSEUDO() is just like RSYSCALL(), but skipping the "name" weak alias. It still does "__sys_name" and "_name". Change i386 to add errno handling to PSEUDO. The same for amd64 and sparc64, with appear to have copied the behavior. ia64 was correct (as was alpha). Just remove some apparently unused variants of the macros. (untested!) I believe powerpc is correct. Fix arm to not export "name" from the PSEUDO case. Remove apparently extra unused variants. (untested!) The errno problem manifested on i386/amd64/sparc64 by having "PSEUDO" classified syscalls return without setting errno. eg: "addr = mmap()" could return with "addr" = 22 instead of setting errno to 22 and returning -1. Approved by: re (kensmith)
2007-07-04 23:18:38 +00:00
_SYSCALL(x) ; \
Minimal libc for sparc64. Reviewed by: obrien
2001-10-26 05:40:07 +00:00
retl ; \
Add .type and .size pseudo-ops to system call macros so that dynamic binaries will link. They must be used for weak symbols as well as strong ones.
2001-11-18 04:29:20 +00:00
nop ; \
.size CNAME(__CONCAT(__sys_,x)), . - CNAME(__CONCAT(__sys_,x)) ; \
.size CNAME(__CONCAT(_,x)), . - CNAME(__CONCAT(__sys_,x))
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