105 lines
3.8 KiB
C
105 lines
3.8 KiB
C
/* $NetBSD: asm.h,v 1.5 1997/07/16 15:16:43 christos 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. All advertising materials mentioning features or use of this software
|
|
* must display the following acknowledgement:
|
|
* This product includes software developed by the University of
|
|
* California, Berkeley and its contributors.
|
|
* 4. 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 _ASM_H_
|
|
#define _ASM_H_
|
|
|
|
#ifdef __STDC__
|
|
#define _C_LABEL(name) _ ## name
|
|
#else
|
|
#define _C_LABEL(name) _/**/name
|
|
#endif
|
|
#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) \
|
|
mov %o7,tmp; 3: call 4f; nop; 4: \
|
|
sethi %hi(__GLOBAL_OFFSET_TABLE_-(3b-.)),dest; \
|
|
or dest,%lo(__GLOBAL_OFFSET_TABLE_-(3b-.)),dest; \
|
|
add dest,%o7,dest; mov tmp,%o7
|
|
|
|
/*
|
|
* PICCY_SET() does the equivalent of a `set var, %dest' instruction in
|
|
* a PIC-like way, but without involving the Global Offset Table. This
|
|
* only works for VARs defined in the same file *and* in the text segment.
|
|
*/
|
|
#define PICCY_SET(var,dest,tmp) \
|
|
mov %o7,tmp; 3: call 4f; nop; 4: \
|
|
add %o7,(var-3b),dest; mov tmp,%o7
|
|
#else
|
|
#define PIC_PROLOGUE(dest,tmp)
|
|
#define PICCY_OFFSET(var,dest,tmp)
|
|
#endif
|
|
|
|
#define FTYPE(x) .type x,@function
|
|
#define OTYPE(x) .type x,@object
|
|
|
|
#define _ENTRY(name) \
|
|
.align 4; .globl name; .proc 1; FTYPE(name); name:
|
|
|
|
#ifdef GPROF
|
|
#define _PROF_PROLOGUE \
|
|
.data; .align 4; 1: .long 0; \
|
|
.text; save %sp,-96,%sp; sethi %hi(1b),%o0; call mcount; \
|
|
or %o0,%lo(1b),%o0; restore
|
|
#else
|
|
#define _PROF_PROLOGUE
|
|
#endif
|
|
|
|
#define ENTRY(name) _ENTRY(_C_LABEL(name)); _PROF_PROLOGUE
|
|
#define ASENTRY(name) _ENTRY(_ASM_LABEL(name)); _PROF_PROLOGUE
|
|
#define FUNC(name) ASENTRY(name)
|
|
|
|
|
|
#define ASMSTR .asciz
|
|
|
|
#define RCSID(name) .asciz name
|
|
|
|
#endif /* _ASM_H_ */
|