153 lines
4.7 KiB
C
153 lines
4.7 KiB
C
|
/* $NetBSD: SYS.h,v 1.23 2008/04/28 20:22:56 martin Exp $ */
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* Copyright (c) 2007 The NetBSD Foundation, Inc.
|
||
|
|
* All rights reserved.
|
||
|
|
*
|
||
|
|
* This code is derived from software contributed to The NetBSD Foundation
|
||
|
|
* by Andrew Doran.
|
||
|
|
*
|
||
|
|
* 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 NETBSD FOUNDATION, INC. 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 FOUNDATION 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.
|
||
|
|
*/
|
||
|
|
|
||
|
|
/*-
|
||
|
|
* 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.
|
||
|
|
* 3. Neither the name of the University nor the names of its contributors
|
||
|
|
* 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.
|
||
|
|
*
|
||
|
|
* from: @(#)SYS.h 5.5 (Berkeley) 5/7/91
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include <machine/asm.h>
|
||
|
|
#include <sys/syscall.h>
|
||
|
|
|
||
|
|
#ifdef __STDC__
|
||
|
|
#define _SYSNAM(x) $(SYS_ ## x)
|
||
|
|
#else
|
||
|
|
#define _SYSNAM(x) $(SYS_/**/x)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define OSYSTRAP(x) \
|
||
|
|
movl _SYSNAM(x),%eax ;\
|
||
|
|
int $0x80
|
||
|
|
|
||
|
|
#ifdef I686_LIBC
|
||
|
|
#define SYSTRAP(x) \
|
||
|
|
pushl %ebx ;\
|
||
|
|
movl _SYSNAM(x),%eax ;\
|
||
|
|
movl $123f,%edx ;\
|
||
|
|
movl %esp,%ecx ;\
|
||
|
|
sysenter ;\
|
||
|
|
123: movl %ebx,%edx ;\
|
||
|
|
popl %ebx
|
||
|
|
#else /* I686_LIBC */
|
||
|
|
#define SYSTRAP(x) OSYSTRAP(x)
|
||
|
|
#endif /* I686_LIBC */
|
||
|
|
|
||
|
|
#ifdef __ELF__
|
||
|
|
#define CERROR _C_LABEL(__cerror)
|
||
|
|
#define CURBRK _C_LABEL(__curbrk)
|
||
|
|
#else
|
||
|
|
#define CERROR _ASM_LABEL(cerror)
|
||
|
|
#define CURBRK _ASM_LABEL(curbrk)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define _SYSCALL_NOERROR(x,y) \
|
||
|
|
ENTRY(x); \
|
||
|
|
SYSTRAP(y)
|
||
|
|
|
||
|
|
#ifdef PIC
|
||
|
|
#define _SYSCALL_ERR \
|
||
|
|
PIC_PROLOGUE; \
|
||
|
|
mov PIC_GOT(CERROR), %ecx; \
|
||
|
|
PIC_EPILOGUE; \
|
||
|
|
jmp *%ecx
|
||
|
|
#else
|
||
|
|
#define _SYSCALL_ERR \
|
||
|
|
jmp CERROR
|
||
|
|
#endif
|
||
|
|
|
||
|
|
#define _SYSCALL(x,y) \
|
||
|
|
.text; _ALIGN_TEXT; \
|
||
|
|
2: _SYSCALL_ERR; \
|
||
|
|
_SYSCALL_NOERROR(x,y); \
|
||
|
|
jc 2b
|
||
|
|
|
||
|
|
#define SYSCALL_NOERROR(x) \
|
||
|
|
_SYSCALL_NOERROR(x,x)
|
||
|
|
|
||
|
|
#define SYSCALL(x) \
|
||
|
|
_SYSCALL(x,x)
|
||
|
|
|
||
|
|
#define PSEUDO_NOERROR(x,y) \
|
||
|
|
_SYSCALL_NOERROR(x,y); \
|
||
|
|
ret
|
||
|
|
|
||
|
|
#define PSEUDO(x,y) \
|
||
|
|
_SYSCALL_NOERROR(x,y); \
|
||
|
|
jc 2f; \
|
||
|
|
ret; \
|
||
|
|
2: _SYSCALL_ERR
|
||
|
|
|
||
|
|
#define RSYSCALL_NOERROR(x) \
|
||
|
|
PSEUDO_NOERROR(x,x)
|
||
|
|
|
||
|
|
#define RSYSCALL(x) \
|
||
|
|
PSEUDO(x,x)
|
||
|
|
|
||
|
|
#ifdef WEAK_ALIAS
|
||
|
|
#define WSYSCALL(weak,strong) \
|
||
|
|
WEAK_ALIAS(weak,strong); \
|
||
|
|
PSEUDO(strong,weak)
|
||
|
|
#else
|
||
|
|
#define WSYSCALL(weak,strong) \
|
||
|
|
PSEUDO(weak,weak)
|
||
|
|
#endif
|
||
|
|
|
||
|
|
.globl CERROR
|