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

Revision 1.9, Thu Mar 6 19:02:58 2014 UTC (8 years, 6 months ago) by skrll
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, bouyer-socketcan-base1, bouyer-socketcan-base, bouyer-socketcan
Changes since 1.8: +3 -3 lines

Move to a flat space register convention. %sr[4-7] are all now the space
number allocated to the process.  gcc produces (slightly) better code
with this convention.

Retain backwards compatiblity.

Welcome to 6.99.36

/*	$NetBSD: SYS.h,v 1.9 2014/03/06 19:02:58 skrll Exp $	*/

/*	$OpenBSD: SYS.h,v 1.9 2001/09/20 20:52:09 millert Exp $	*/

/*
 * Copyright (c) 1998-2002 Michael Shalayeff
 * All rights reserved.
 *
 * 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 AUTHOR ``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 AUTHOR 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 MIND
 * 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.
 */

#include <sys/syscall.h>
#include <machine/asm.h>
#include <machine/vmparam.h>
#undef _LOCORE
#define _LOCORE
#include <machine/frame.h>

#define	SYSENTRY(x)	LEAF_ENTRY(x)
#define	SYSEXIT(x)	EXIT(x)

#define	SYSCALL(x)				!\
	stw	%rp, HPPA_FRAME_ERP(%sr0,%sp)	!\
	ldil	L%SYSCALLGATE, %r1		!\
	ble	4(%sr2, %r1)			!\
	ldi	__CONCAT(SYS_,x), %t1		!\
	.import __cerror, code			!\
	comb,<>	%r0, %t1, __cerror		!\
	ldw	HPPA_FRAME_ERP(%sr0,%sp), %rp

#define	PSEUDO(x,y)				!\
SYSENTRY(x)					!\
	SYSCALL(y)				!\
	bv	%r0(%rp)			!\
	nop					!\
SYSEXIT(x)

#define	PSEUDO_NOERROR(x,y)			!\
SYSENTRY(x)					!\
	stw	%rp, HPPA_FRAME_ERP(%sr0,%sp)	!\
	ldil	L%SYSCALLGATE, %r1		!\
	ble	4(%sr2, %r1)			!\
	ldi	__CONCAT(SYS_,y), %t1		!\
	ldw	HPPA_FRAME_ERP(%sr0,%sp), %rp	!\
	bv	%r0(%rp)			!\
	nop					!\
SYSEXIT(x)

#define RSYSCALL(x)		PSEUDO(x,x)
#define	RSYSCALL_NOERROR(x)	PSEUDO_NOERROR(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