b6cbf7203b
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.
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 $ */
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/*-
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* Copyright (c) 2007 The NetBSD Foundation, Inc.
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* All rights reserved.
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*
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* This code is derived from software contributed to The NetBSD Foundation
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* by Andrew Doran.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
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* ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
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* BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. Neither the name of the University nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*
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* from: @(#)SYS.h 5.5 (Berkeley) 5/7/91
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*/
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#include <machine/asm.h>
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#include <sys/syscall.h>
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#ifdef __STDC__
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#define _SYSNAM(x) $(SYS_ ## x)
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#else
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#define _SYSNAM(x) $(SYS_/**/x)
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#endif
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#define OSYSTRAP(x) \
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movl _SYSNAM(x),%eax ;\
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int $0x80
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#ifdef I686_LIBC
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#define SYSTRAP(x) \
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pushl %ebx ;\
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movl _SYSNAM(x),%eax ;\
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movl $123f,%edx ;\
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movl %esp,%ecx ;\
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sysenter ;\
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123: movl %ebx,%edx ;\
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popl %ebx
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#else /* I686_LIBC */
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#define SYSTRAP(x) OSYSTRAP(x)
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#endif /* I686_LIBC */
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#ifdef __ELF__
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#define CERROR _C_LABEL(__cerror)
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#define CURBRK _C_LABEL(__curbrk)
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#else
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#define CERROR _ASM_LABEL(cerror)
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#define CURBRK _ASM_LABEL(curbrk)
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#endif
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#define _SYSCALL_NOERROR(x,y) \
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ENTRY(x); \
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SYSTRAP(y)
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#ifdef PIC
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#define _SYSCALL_ERR \
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PIC_PROLOGUE; \
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mov PIC_GOT(CERROR), %ecx; \
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PIC_EPILOGUE; \
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jmp *%ecx
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#else
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#define _SYSCALL_ERR \
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jmp CERROR
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#endif
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#define _SYSCALL(x,y) \
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.text; _ALIGN_TEXT; \
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2: _SYSCALL_ERR; \
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_SYSCALL_NOERROR(x,y); \
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jc 2b
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#define SYSCALL_NOERROR(x) \
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_SYSCALL_NOERROR(x,x)
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#define SYSCALL(x) \
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_SYSCALL(x,x)
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#define PSEUDO_NOERROR(x,y) \
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_SYSCALL_NOERROR(x,y); \
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ret
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#define PSEUDO(x,y) \
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_SYSCALL_NOERROR(x,y); \
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jc 2f; \
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ret; \
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2: _SYSCALL_ERR
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#define RSYSCALL_NOERROR(x) \
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PSEUDO_NOERROR(x,x)
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#define RSYSCALL(x) \
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PSEUDO(x,x)
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#ifdef WEAK_ALIAS
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#define WSYSCALL(weak,strong) \
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WEAK_ALIAS(weak,strong); \
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PSEUDO(strong,weak)
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#else
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#define WSYSCALL(weak,strong) \
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PSEUDO(weak,weak)
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#endif
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.globl CERROR
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