minix/lib/nbsd_libc/arch/i386/SYS.h
Gianluca Guida b6cbf7203b Import unmodified NetBSD libc in trunk
This patch imports the unmodified current version of NetBSD libc.
The NetBSD includes are in /nbsd_include, while the libc code itself is 
split between lib/nbsd_libc and common/lib/libc.
2011-02-14 19:36:03 +00:00

152 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