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/* $OpenBSD: asm.h,v 1.19 2024/03/29 21:05:34 miod Exp $ */
/* $NetBSD: asm.h,v 1.15 2000/08/02 22:24:39 eeh Exp $ */
/*
* Copyright (c) 1994 Allen Briggs
* All rights reserved.
*
* Gleaned from locore.s and sun3 asm.h which had the following copyrights:
* locore.s:
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1982, 1990 The Regents of the University of California.
* sun3/include/asm.h:
* Copyright (c) 1993 Adam Glass
* Copyright (c) 1990 The Regents of the University of California.
*
* 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.
*/
#ifndef _MACHINE_ASM_H_
#define _MACHINE_ASM_H_
/* Pull in CC64FSZ and BIAS from frame.h */
#include <machine/frame.h>
#define _C_LABEL(name) name
#define _ASM_LABEL(name) name
#ifdef __PIC__
/*
* PIC_PROLOGUE() is akin to the compiler generated function prologue for
* PIC code. It leaves the address of the Global Offset Table in DEST,
* clobbering register TMP in the process. Using the temporary enables us
* to work without a stack frame (doing so requires saving %o7) .
*/
#define PIC_PROLOGUE(dest,tmp) \
sethi %hi(_GLOBAL_OFFSET_TABLE_-4),dest; \
rd %pc, tmp; \
or dest,%lo(_GLOBAL_OFFSET_TABLE_+4),dest; \
add dest,tmp,dest
#else
#define PIC_PROLOGUE(dest,tmp)
#endif
#define FTYPE(x) .type x,@function
#define OTYPE(x) .type x,@object
#define _ENTRY_NB(name) \
.align 4; .proc 1; FTYPE(name); name:
#define _ENTRY(name) .globl name; _ENTRY_NB(name)
#if defined(PROF) || defined(GPROF)
#define _PROF_PROLOGUE \
.data; .align 8; 1: .uaword 0; .uaword 0; \
.text; save %sp,-CC64FSZ,%sp; sethi %hi(1b),%o0; call _mcount; \
or %o0,%lo(1b),%o0; restore
#else
#define _PROF_PROLOGUE
#endif
#define ENTRY(name) _ENTRY(name); _PROF_PROLOGUE
#define NENTRY(name) _ENTRY(name)
#define ENTRY_NB(name) _ENTRY_NB(name); _PROF_PROLOGUE
#define ASENTRY(name) _ENTRY(name); _PROF_PROLOGUE
#define FUNC(name) ASENTRY(name)
#define END(y) .size y, . - y
#define STRONG_ALIAS(alias,sym) \
.global alias; \
alias = sym
#define WEAK_ALIAS(alias,sym) \
.weak alias; \
alias = sym
#endif /* _MACHINE_ASM_H_ */
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