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File: [cvs.NetBSD.org] / src / lib / libc / arch / sparc64 / SYS.h (download)

Revision 1.15, Thu Sep 12 15:36:16 2013 UTC (8 years, 9 months ago) by joerg
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-9-2-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 -5 lines

Pass PICFLAGS down to cc-as-as and use __PIC__ to decide if it is small
vs big PIC mode. Retire -DPIC and -DBIGPIC.

/*	$NetBSD: SYS.h,v 1.15 2013/09/12 15:36:16 joerg Exp $	*/

/*-
 * Copyright (c) 1992, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * This software was developed by the Computer Systems Engineering group
 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and
 * contributed to Berkeley.
 *
 * 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.
 *
 *	@(#)SYS.h	8.1 (Berkeley) 6/4/93
 *
 *	from: Header: SYS.h,v 1.2 92/07/03 18:57:00 torek Exp
 */

#include <machine/asm.h>
#include <sys/syscall.h>
#include <machine/trap.h>

#ifdef __STDC__
#define _CAT(x,y) x##y
#else
#define _CAT(x,y) x/**/y
#endif

/*
 * ERROR branches to cerror.  This is done with a macro so that I can
 * change it to be position independent later, if need be.
 */
#if __PIC__ - 0 >= 2
#define	JUMP(name) \
	PIC_PROLOGUE(%g1,%g5); \
	sethi %hi(_C_LABEL(name)),%g5; \
	or %g5,%lo(_C_LABEL(name)),%g5; \
	ldx [%g1+%g5],%g5; \
	jmp %g5; \
	nop
#elif __PIC__ - 0 >= 1
#define	JUMP(name) \
	PIC_PROLOGUE(%g1,%g5); \
	ldx [%g1+_C_LABEL(name)],%g5; jmp %g5; nop
#else
#define	JUMP(name)	set _C_LABEL(name),%g1; jmp %g1; nop
#endif
#define	ERROR()		JUMP(__cerror)
/*
 * SYSCALL is used when further action must be taken before returning.
 * Note that it adds a `nop' over what we could do, if we only knew what
 * came at label 1....
 */
#define	_SYSCALL(x,y) \
	ENTRY(x); mov _CAT(SYS_,y),%g1; t ST_SYSCALL; bcc 1f; nop; ERROR(); 1:

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

/*
 * RSYSCALL is used when the system call should just return.  Here
 * we use the SYSCALL_G5RFLAG to put the `success' return address in %g5
 * and avoid a branch.
 */
#define	RSYSCALL(x) \
	ENTRY(x); mov (_CAT(SYS_,x))|SYSCALL_G5RFLAG,%g1; add %o7,8,%g5; \
	t ST_SYSCALL; ERROR()

/*
 * PSEUDO(x,y) is like RSYSCALL(y) except that the name is x.
 */
#define	PSEUDO(x,y) \
	ENTRY(x); mov (_CAT(SYS_,y))|SYSCALL_G5RFLAG,%g1; add %o7,8,%g5; \
	t ST_SYSCALL; ERROR()

/*
 * WSYSCALL(weak,strong) is like RSYSCALL(weak), except that weak is
 * a weak internal alias for the strong symbol.
 */
#define	WSYSCALL(weak,strong) \
	WEAK_ALIAS(weak,strong); \
	PSEUDO(strong,weak)

/*
 * SYSCALL_NOERROR is like SYSCALL, except it's used for syscalls 
 * that never fail.
 *
 * XXX - This should be optimized.
 */
#define SYSCALL_NOERROR(x) \
	ENTRY(x); mov _CAT(SYS_,x),%g1; t ST_SYSCALL

/*
 * RSYSCALL_NOERROR is like RSYSCALL, except it's used for syscalls 
 * that never fail.
 *
 * XXX - This should be optimized.
 */
#define RSYSCALL_NOERROR(x) \
	ENTRY(x); mov (_CAT(SYS_,x))|SYSCALL_G5RFLAG,%g1; add %o7,8,%g5; \
	t ST_SYSCALL

/*
 * PSEUDO_NOERROR(x,y) is like RSYSCALL_NOERROR(y) except that the name is x.
 */
#define PSEUDO_NOERROR(x,y) \
	ENTRY(x); mov (_CAT(SYS_,y))|SYSCALL_G5RFLAG,%g1; add %o7,8,%g5; \
	t ST_SYSCALL

	.globl	_C_LABEL(__cerror)