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aed116911d
trampoline as part of the MD __sys_sigaction again. Submitted by: kib (initial versions) MFC after: 3 days
127 lines
4.1 KiB
C
127 lines
4.1 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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* 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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* from: @(#)DEFS.h 5.1 (Berkeley) 4/23/90
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* from: FreeBSD: src/sys/i386/include/asm.h,v 1.7 2000/01/25
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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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#define __ASM__
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#include <sys/cdefs.h>
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#ifdef PIC
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#define PIC_PROLOGUE(r1, r2) \
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sethi %hi(_GLOBAL_OFFSET_TABLE_-4), r1 ; \
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rd %pc, r2 ; \
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or r1, %lo(_GLOBAL_OFFSET_TABLE_+4), r1 ; \
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add r2, r1, r2
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#define SET(name, r1, r2) \
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set name, r2 ; \
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ldx [r1 + r2], r2
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#else
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#define PIC_PROLOGUE(r1, r2)
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#define SET(name, r1, r2) \
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set name, r2
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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) __CONCAT(.,asmsym)
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#define CCFSZ 192
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#define SPOFF 2047
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#define _ALIGN_TEXT .align 32
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#define _START_ENTRY \
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.text ; \
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_ALIGN_TEXT
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/*
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* Define function entry and alternate entry points.
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*
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* The compiler produces #function for the .type pseudo-op, but the '#'
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* character has special meaning in cpp macros, so we use @function like
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* other architectures. The assembler seems to accept both.
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* The assembler also accepts a .proc pseudo-op, which is used by the
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* peep hole optimizer, whose argument is the type code of the return
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* value. Since this is difficult to predict and its expected that
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* assembler code is already optimized, we leave it out.
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*/
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#define _ALTENTRY(x) \
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.globl CNAME(x) ; \
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.type CNAME(x),@function ; \
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CNAME(x):
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#define _ENTRY(x) \
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_START_ENTRY ; \
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.globl CNAME(x) ; \
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.type CNAME(x),@function ; \
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CNAME(x):
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#define ALTENTRY(x) _ALTENTRY(x)
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#define ENTRY(x) _ENTRY(x)
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#define END(x) .size x, . - x
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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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* Kernel RCS ID tag and copyright macros
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*/
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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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