minix/lib/libc/arch/sh3/SYS.h

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/*-
* 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
* $NetBSD: SYS.h,v 1.10 2011/01/23 14:08:53 joerg Exp $
*/
#include <machine/asm.h>
#include <sys/syscall.h>
#ifdef __STDC__
#define IMMEDIATE #
#define SYSTRAP(x) \
mov.l 903f, r0; \
trapa IMMEDIATE 0x80; \
bra 904f; \
nop; \
.align 2; \
903: .long (SYS_ ## x); \
904:
#else
#define SYSTRAP(x) \
mov.l 903f, r0; \
trapa #0x80; \
bra 904f; \
nop; \
.align 2; \
903: .long (SYS_/**/x); \
904:
#endif
#define _SYSCALL_NOERROR(x,y) \
ENTRY(x); \
SYSTRAP(y)
#ifdef PIC
#define JUMP_CERROR \
mov r0, r4; \
mov.l 912f, r1; \
mova 912f, r0; \
mov.l 913f, r2; \
add r1, r0; \
mov.l @(r0, r2), r3; \
jmp @r3; \
nop; \
.align 2; \
912: .long _GLOBAL_OFFSET_TABLE_; \
913: .long PIC_GOT(cerror)
#else /* !PIC */
#define JUMP_CERROR \
mov.l 912f, r3; \
jmp @r3; \
mov r0, r4; \
.align 2; \
912: .long cerror
#endif /* !PIC */
#define _SYSCALL(x,y) \
.text; \
911: JUMP_CERROR; \
_SYSCALL_NOERROR(x,y); \
bf 911b
#define SYSCALL_NOERROR(x) \
_SYSCALL_NOERROR(x,x)
#define SYSCALL(x) \
_SYSCALL(x,x)
#define PSEUDO_NOERROR(x,y) \
_SYSCALL_NOERROR(x,y); \
rts; \
nop
#define PSEUDO(x,y) \
_SYSCALL(x,y); \
rts; \
nop
#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