SYS.h revision 7c478bd95313f5f23a4c958a745db2134aa03244
/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License, Version 1.0 only
* (the "License"). You may not use this file except in compliance
* with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
!
! "@(#)SYS.h 1.14 88/02/08"
! Copyright (c) 1986, 1996 by Sun Microsystems, Inc.
! All rights reserved.
!
#include <sys/syscall.h>
#include <machine/asm_linkage.h>
#include "PIC.h"
#define SV_ERESTART 91 /* ERESTART is returned by the kernel for
restartable system calls */
#define WINDOWSIZE (16*4)
.global .cerror
#define SYSCALL(x) \
ENTRY(x); \
mov SYS_/**/x, %g1; \
t 8; \
CERROR(o5)
#define BSDSYSCALL(x) \
ENTRY(_/**/x); \
mov SYS_/**/x, %g1; \
t 8; \
CERROR(o5)
/*
* SYSREENTRY provides the entry sequence for restartable system calls.
*/
#define SYSREENTRY(x) \
ENTRY(x); \
st %o0,[%sp+68]; \
.restart_/**/x:
#define PSEUDO(x, y) \
ENTRY(x); \
mov SYS_/**/y, %g1; \
t 8;
/*
* SYSCALL_RESTART provides the most common restartable system call sequence.
*/
#define SYSCALL_RESTART(x) \
SYSREENTRY(x); \
mov SYS_/**/x, %g1; \
t 8; \
SYSRESTART(.restart_/**/x)
/*
* SYSREENTRY provides the entry sequence for restartable system calls.
*/
#define SYSREENTRY(x) \
ENTRY(x); \
st %o0,[%sp+68]; \
.restart_/**/x:
/*
* SYSRESTART provides the error handling sequence for restartable
* system calls.
*/
#ifdef PIC
#define SYSRESTART(x) \
bcc noerr; \
cmp %o0, SV_ERESTART; \
be,a x; \
ld [%sp+68], %o0; \
PIC_SETUP(o5); \
ld [%o5 + .cerror], %o5; \
jmp %o5; \
.empty; \
noerr: nop ;
#else
#define SYSRESTART(x) \
bcc noerr; \
cmp %o0, SV_ERESTART; \
be,a x; \
ld [%sp+68], %o0; \
ba .cerror; \
.empty; \
noerr: nop ;
#endif
#define RET retl; nop;
#ifdef PIC
#define CERROR(free_reg) \
bcc noerr; \
PIC_SETUP(free_reg); \
.empty; \
ld [%free_reg+ .cerror],%free_reg; \
jmp %free_reg; \
.empty; \
noerr: nop;
#else
#define CERROR(free_reg) \
bcc noerr; \
.empty; \
sethi %hi(.cerror), %free_reg;\
or %free_reg, %lo(.cerror), %free_reg;\
jmp %free_reg;\
.empty;\
noerr: nop;
#endif