210 lines
6.7 KiB
C
210 lines
6.7 KiB
C
/* $NetBSD: asm.h,v 1.19 1999/10/25 23:52:52 thorpej Exp $ */
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/*-
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* Copyright (c) 1997 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 Jason R. Thorpe.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the NetBSD
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* Foundation, Inc. and its contributors.
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* 4. Neither the name of The NetBSD Foundation nor the names of its
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* contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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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) 1994 Allen Briggs
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* All rights reserved.
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*
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* Gleaned from locore.s and sun3 asm.h which had the following copyrights:
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* locore.s:
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* Copyright (c) 1988 University of Utah.
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* Copyright (c) 1982, 1990 The Regents of the University of California.
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* sun3/include/asm.h:
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* Copyright (c) 1993 Adam Glass
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* Copyright (c) 1990 The Regents of the University of California.
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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. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by the University of
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* California, Berkeley and its contributors.
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* 4. 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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#ifndef _M68K_ASM_H_
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#define _M68K_ASM_H_
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#if defined(__ELF__) && defined(PIC)
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#define PIC_PLT(name) name@PLTPC
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#else
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#define PIC_PLT(name) name
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#endif
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#ifdef __ELF__
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# if __STDC__
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# define _C_LABEL(name) name
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# else
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# define _C_LABEL(name) name
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#endif /* __STDC__ */
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#else /* __ELF__ */
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# if __STDC__
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# define _C_LABEL(name) _ ## name
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# else
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# define _C_LABEL(name) _/**/name
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# endif /* __STDC__ */
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#endif /* __ELF__ */
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#define _ASM_LABEL(name) name
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#define _ENTRY(name) \
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.text; .even; .globl name; .type name,@function; name:
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#ifdef GPROF
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#define _PROF_PROLOG link %a6,#0; jbsr mcount; unlk %a6
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#else
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#define _PROF_PROLOG
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#endif
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#define ENTRY(name) _ENTRY(_C_LABEL(name)) _PROF_PROLOG
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#define ASENTRY(name) _ENTRY(_ASM_LABEL(name)) _PROF_PROLOG
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#define ENTRY_NOPROFILE(name) _ENTRY(_C_LABEL(name))
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#define ASENTRY_NOPROFILE(name) _ENTRY(_ASM_LABEL(name))
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/*
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* The m68k ALTENTRY macro is very different than the traditional
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* implementation used by other NetBSD ports. Usually ALTENTRY
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* simply provides an alternate function entry point. The m68k
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* definition takes a second argument and jumps inside the second
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* function when profiling is enabled.
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*
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* The m68k behavior is similar to the ENTRY2 macro found in
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* solaris' asm_linkage.h.
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*
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* Providing ENTRY2 and changing all the code that uses ALTENTRY
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* to use it would be a desirable change.
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*/
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#ifdef PROF
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#define ALTENTRY(name, rname) ENTRY(name); jra rname+12
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#else
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#define ALTENTRY(name, rname) _ENTRY(_C_LABEL(name))
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#endif
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#define RCSID(x) .text ; \
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.asciz x ; \
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.even
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/*
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* Global variables of whatever sort.
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*/
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#define GLOBAL(x) \
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.globl _C_LABEL(x) ; \
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_C_LABEL(x):
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#define ASGLOBAL(x) \
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.globl _ASM_LABEL(x) ; \
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_ASM_LABEL(x):
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/*
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* ...and local variables.
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*/
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#define LOCAL(x) \
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_C_LABEL(x):
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#define ASLOCAL(x) \
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_ASM_LABEL(x):
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/*
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* Items in the BSS segment.
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*/
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#define BSS(name, size) \
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.comm _C_LABEL(name),size
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#define ASBSS(name, size) \
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.comm _ASM_LABEL(name),size
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#ifdef _KERNEL
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/*
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* Shorthand for calling panic().
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* Note the side-effect: it uses up the 9: label, so be careful!
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*/
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#define PANIC(x) \
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pea 9f ; \
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jbsr _C_LABEL(panic) ; \
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9: .asciz x ; \
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.even
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/*
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* Shorthand for defining vectors for the vector table.
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*/
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#define VECTOR(x) \
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.long _C_LABEL(x)
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#define ASVECTOR(x) \
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.long _ASM_LABEL(x)
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#define VECTOR_UNUSED \
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.long 0
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#endif /* _KERNEL */
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#ifdef __STDC__
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#define __STRING(x) #x
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#define WARN_REFERENCES(sym,msg) \
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.stabs msg ## ,30,0,0,0 ; \
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.stabs __STRING(_ ## sym) ## ,1,0,0,0
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#else
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#define __STRING(x) "x"
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#define WARN_REFERENCES(sym,msg) \
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.stabs msg,30,0,0,0 ; \
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.stabs __STRING(_/**/sym),1,0,0,0
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#endif /* __STDC__ */
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#endif /* _M68K_ASM_H_ */
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