[BACK]Return to SYS.h CVS log [TXT][DIR] Up to [cvs.NetBSD.org] / src / lib / libc / arch / arm

File: [cvs.NetBSD.org] / src / lib / libc / arch / arm / SYS.h (download)

Revision 1.15, Mon Aug 19 22:13:34 2013 UTC (9 years, 1 month ago) by matt
Branch: MAIN
CVS Tags: yamt-pagecache-base9, tls-maxphys-base, tls-earlyentropy-base, tls-earlyentropy, riastradh-xf86-video-intel-2-7-1-pre-2-21-15, riastradh-drm2-base3, prg-localcount2-base3, prg-localcount2-base2, prg-localcount2-base1, prg-localcount2-base, prg-localcount2, phil-wifi-base, phil-wifi-20200421, phil-wifi-20200411, phil-wifi-20200406, phil-wifi-20191119, phil-wifi-20190609, phil-wifi, pgoyette-localcount-base, pgoyette-localcount-20170426, pgoyette-localcount-20170320, pgoyette-localcount-20170107, pgoyette-localcount-20161104, pgoyette-localcount-20160806, pgoyette-localcount-20160726, pgoyette-localcount, pgoyette-compat-merge-20190127, pgoyette-compat-base, pgoyette-compat-20190127, pgoyette-compat-20190118, pgoyette-compat-1226, pgoyette-compat-1126, pgoyette-compat-1020, pgoyette-compat-0930, pgoyette-compat-0906, pgoyette-compat-0728, pgoyette-compat-0625, pgoyette-compat-0521, pgoyette-compat-0502, pgoyette-compat-0422, pgoyette-compat-0415, pgoyette-compat-0407, pgoyette-compat-0330, pgoyette-compat-0322, pgoyette-compat-0315, pgoyette-compat, perseant-stdc-iso10646-base, perseant-stdc-iso10646, netbsd-9-base, netbsd-9-3-RELEASE, netbsd-9-2-RELEASE, netbsd-9-1-RELEASE, netbsd-9-0-RELEASE, netbsd-9-0-RC2, netbsd-9-0-RC1, netbsd-9, netbsd-8-base, netbsd-8-2-RELEASE, netbsd-8-1-RELEASE, netbsd-8-1-RC1, netbsd-8-0-RELEASE, netbsd-8-0-RC2, netbsd-8-0-RC1, netbsd-8, netbsd-7-nhusb-base-20170116, netbsd-7-nhusb-base, netbsd-7-nhusb, netbsd-7-base, netbsd-7-2-RELEASE, netbsd-7-1-RELEASE, netbsd-7-1-RC2, netbsd-7-1-RC1, netbsd-7-1-2-RELEASE, netbsd-7-1-1-RELEASE, netbsd-7-1, netbsd-7-0-RELEASE, netbsd-7-0-RC3, netbsd-7-0-RC2, netbsd-7-0-RC1, netbsd-7-0-2-RELEASE, netbsd-7-0-1-RELEASE, netbsd-7-0, netbsd-7, matt-nb8-mediatek-base, matt-nb8-mediatek, localcount-20160914, is-mlppp-base, is-mlppp, cjep_sun2x-base1, cjep_sun2x-base, cjep_sun2x, cjep_staticlib_x-base1, cjep_staticlib_x-base, cjep_staticlib_x, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan, HEAD
Changes since 1.14: +3 -1 lines

Group all syscalls together.

/*	$NetBSD: SYS.h,v 1.15 2013/08/19 22:13:34 matt Exp $	*/

/*-
 * 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
 */

#define _TEXT_SECTION	.section .text.hot, "ax"

#include <machine/asm.h>
#include <sys/syscall.h>
#include <arm/swi.h>

#ifndef __STDC__
#error __STDC__ not defined
#endif

#if !defined(__thumb__)
#define SYSTRAP(x)	svc #SWI_OS_NETBSD | SYS_ ## x
#else
.macro	emitsvc	x
	mov	ip, r0
.ifeq	\x / 256
	movs	r0, #\x
.else
#if defined(_ARM_ARCH_7)
	movw	r0, #\x
#else
.ifeq (\x & 3)
	movs	r0, #(\x / 4)
	lsls	r0, r0, #3
.else
.ifeq (\x & 1)
	movs	r0, #(\x / 2)
	lsls	r0, r0, #1
.else
	movs	r0, #(\x / 256)
	lsls	r0, r0, #8
	adds	r0, r0, #(\x & 255)
.endif
.endif
#endif /* !_ARM_ARCH_7 */
.endif
	svc	#255
.endm
#define SYSTRAP(x)	emitsvc SYS_ ## x
#endif /* __thumb__ */

#define	CERROR		_C_LABEL(__cerror)
#define	CURBRK		_C_LABEL(__curbrk)

#define _SYSCALL_NOERROR(x,y)						\
	ENTRY(x);							\
	SYSTRAP(y)

#if  !defined(__thumb__) || defined(_ARM_ARCH_T2)
#define	_INVOKE_CERROR()	bcs CERROR
#else
#define	_INVOKE_CERROR()	\
	bcc 86f; push {r3,lr}; bl CERROR; pop {r3,pc}; 86:
#endif
#define _SYSCALL(x, y)							\
	_SYSCALL_NOERROR(x,y);						\
	_INVOKE_CERROR()

#define SYSCALL_NOERROR(x)						\
	_SYSCALL_NOERROR(x,x)

#define SYSCALL(x)							\
	_SYSCALL(x,x)


#define PSEUDO_NOERROR(x,y)						\
	_SYSCALL_NOERROR(x,y);						\
	RET;								\
	END(x)

#define PSEUDO(x,y)							\
	_SYSCALL(x,y);							\
	RET;								\
	END(x)


#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

	.hidden	CERROR
	.globl	CERROR