fbbd9655e5
Renumber cluase 4 to 3, per what everybody else did when BSD granted them permission to remove clause 3. My insistance on keeping the same numbering for legal reasons is too pedantic, so give up on that point. Submitted by: Jan Schaumann <jschauma@stevens.edu> Pull Request: https://github.com/freebsd/freebsd/pull/96
121 lines
3.7 KiB
C
121 lines
3.7 KiB
C
/*-
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* Copyright (c) 1990 The Regents of the University of California.
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* All rights reserved.
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*
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* This code is derived from software contributed to Berkeley by
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* William Jolitz.
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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. 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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* from: @(#)DEFS.h 5.1 (Berkeley) 4/23/90
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* $FreeBSD$
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*/
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#ifndef _MACHINE_ASM_H_
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#define _MACHINE_ASM_H_
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#include <sys/cdefs.h>
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#ifdef PIC
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#define PIC_PROLOGUE \
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pushl %ebx; \
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call 1f; \
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1: \
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popl %ebx; \
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addl $_GLOBAL_OFFSET_TABLE_+[.-1b],%ebx
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#define PIC_EPILOGUE \
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popl %ebx
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#define PIC_PLT(x) x@PLT
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#define PIC_GOT(x) x@GOT(%ebx)
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#define PIC_GOTOFF(x) x@GOTOFF(%ebx)
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#else
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#define PIC_PROLOGUE
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#define PIC_EPILOGUE
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#define PIC_PLT(x) x
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#define PIC_GOTOFF(x) x
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#endif
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/*
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* CNAME and HIDENAME manage the relationship between symbol names in C
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* and the equivalent assembly language names. CNAME is given a name as
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* it would be used in a C program. It expands to the equivalent assembly
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* language name. HIDENAME is given an assembly-language name, and expands
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* to a possibly-modified form that will be invisible to C programs.
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*/
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#define CNAME(csym) csym
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#define HIDENAME(asmsym) .asmsym
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/* XXX should use .p2align 4,0x90 for -m486. */
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#define _START_ENTRY .text; .p2align 2,0x90
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#define _ENTRY(x) _START_ENTRY; \
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.globl CNAME(x); .type CNAME(x),@function; CNAME(x):
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#define END(x) .size x, . - x
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#ifdef PROF
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#define ALTENTRY(x) _ENTRY(x); \
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pushl %ebp; movl %esp,%ebp; \
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call PIC_PLT(HIDENAME(mcount)); \
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popl %ebp; \
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jmp 9f
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#define ENTRY(x) _ENTRY(x); \
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pushl %ebp; movl %esp,%ebp; \
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call PIC_PLT(HIDENAME(mcount)); \
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popl %ebp; \
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9:
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#else
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#define ALTENTRY(x) _ENTRY(x)
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#define ENTRY(x) _ENTRY(x)
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#endif
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/*
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* WEAK_REFERENCE(): create a weak reference alias from sym.
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* The macro is not a general asm macro that takes arbitrary names,
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* but one that takes only C names. It does the non-null name
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* translation inside the macro.
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*/
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#define WEAK_REFERENCE(sym, alias) \
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.weak CNAME(alias); \
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.equ CNAME(alias),CNAME(sym)
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/*
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* STRONG_ALIAS: create a strong alias.
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*/
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#define STRONG_ALIAS(alias,sym) \
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.globl alias; \
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alias = sym
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#define RCSID(x) .text; .asciz x
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#undef __FBSDID
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#if !defined(lint) && !defined(STRIP_FBSDID)
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#define __FBSDID(s) .ident s
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#else
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#define __FBSDID(s) /* nothing */
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#endif /* not lint and not STRIP_FBSDID */
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#endif /* !_MACHINE_ASM_H_ */
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