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NetBSD/sys/arch/mips/include/asm.h
castor a84ec5a3c1 * Create mips_reg_t data type to allow register size to be 
decoupled from long or int or long long.  Define macros in asm.h to facilitate
  choosing these on a port by port basis.

* Create <machine/pubassym.h> mechanism to allow jmp_buf structure size
  to be calculated at system build time.

* Define _MIPS_BSD_SIM macro which specifies what calling style is appropritae
  for the architecture.  For 64-bit oriented systems set the Status Register
  to allow 64-bit instructions.

* Remove UADDR related macros because kernel U structure is now mapped
  normally.
* Separate cpu.h into cpu.h and cpuarch.h to keep things neat.
* Add support for QED 52xx processors
1999-01-14 18:45:45 +00:00

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/* $NetBSD: asm.h,v 1.15 1999/01/14 18:45:46 castor Exp $ */
/*
* Copyright (c) 1992, 1993
* The Regents of the University of California. All rights reserved.
*
* This code is derived from software contributed to Berkeley by
* Ralph Campbell.
*
* 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.
*
* @(#)machAsmDefs.h 8.1 (Berkeley) 6/10/93
*/
/*
* machAsmDefs.h --
*
* Macros used when writing assembler programs.
*
* Copyright (C) 1989 Digital Equipment Corporation.
* Permission to use, copy, modify, and distribute this software and
* its documentation for any purpose and without fee is hereby granted,
* provided that the above copyright notice appears in all copies.
* Digital Equipment Corporation makes no representations about the
* suitability of this software for any purpose. It is provided "as is"
* without express or implied warranty.
*
* from: Header: /sprite/src/kernel/mach/ds3100.md/RCS/machAsmDefs.h,
* v 1.2 89/08/15 18:28:24 rab Exp SPRITE (DECWRL)
*/
#ifndef _MIPS_ASM_H
#define _MIPS_ASM_H
#include <machine/regdef.h>
/*
* Define -pg profile entry code.
* XXX assume .set noreorder for kernel, .set reorder for user code.
*/
#define _KERN_MCOUNT \
.set noat; \
move $1,$31; \
jal _mcount; \
subu sp,sp,8; \
.set at
#ifdef GPROF
# if defined(_KERNEL) || defined(_LOCORE)
# define MCOUNT _KERN_MCOUNT
# else
# define MCOUNT .set noreorder; _KERN_MCOUNT ; .set reorder;
# endif
#else
#define MCOUNT
#endif
#ifdef __NO_LEADING_UNDERSCORES__
# define _C_LABEL(x) x
#else
# ifdef __STDC__
# define _C_LABEL(x) _ ## x
# else
# define _C_LABEL(x) _/**/x
# endif
#endif
#ifdef USE_AENT
#define AENT(x) \
.aent x, 0
#else
#define AENT(x)
#endif
/*
* WARN_REFERENCES: create a warning if the specified symbol is referenced
* (ELF only, and thus, no leading underscores).
*/
#ifdef __ELF__
#ifdef __STDC__
#define WARN_REFERENCES(_sym,_msg) \
.section .gnu.warning. ## _sym ; .ascii _msg ; .text
#else
#define WARN_REFERENCES(_sym,_msg) \
.section .gnu.warning./**/_sym ; .ascii _msg ; .text
#endif /* __STDC__ */
#endif /* __ELF__ */
/*
* LEAF
* A leaf routine does
* - call no other function,
* - never use any register that callee-saved (S0-S8), and
* - not use any local stack storage.
*/
#define LEAF(x) \
.globl _C_LABEL(x); \
.ent _C_LABEL(x), 0; \
_C_LABEL(x): ; \
.frame sp, 0, ra; \
MCOUNT
/*
* LEAF_NOPROFILE
* No profilable leaf routine.
*/
#define LEAF_NOPROFILE(x) \
.globl _C_LABEL(x); \
.ent _C_LABEL(x), 0; \
_C_LABEL(x): ; \
.frame sp, 0, ra
/*
* XLEAF
* declare alternate entry to leaf routine
*/
#define XLEAF(x) \
.globl _C_LABEL(x); \
.aent _C_LABEL(x),0; \
_C_LABEL(x):
/*
* NESTED
* A function calls other functions and needs
* therefore stack space to save/restore registers.
*/
#define NESTED(x, fsize, retpc) \
.globl _C_LABEL(x); \
.ent _C_LABEL(x), 0; \
_C_LABEL(x): ; \
.frame sp, fsize, retpc; \
MCOUNT
/*
* NESTED_NOPROFILE(x)
* No profilable nested routine.
*/
#define NESTED_NOPROFILE(x, fsize, retpc) \
.globl _C_LABEL(x); \
.ent _C_LABEL(x), 0; \
_C_LABEL(x): ; \
.frame sp, fsize, retpc
/*
* XNESTED
* declare alternate entry point to nested routine.
*/
#define XNESTED(x) \
.globl _C_LABEL(x); \
.aent _C_LABEL(x),0; \
_C_LABEL(x):
/*
* END
* Mark end of a procedure.
*/
#define END(x) \
.end _C_LABEL(x)
/*
* IMPORT -- import external symbol
*/
#define IMPORT(sym, size) \
.extern sym,size
/*
* EXPORT -- export definition of symbol
*/
#define EXPORT(x) \
.globl _C_LABEL(x); \
_C_LABEL(x):
/*
* ALIAS
* Global alias for a function, or alternate entry point
*/
#define ALIAS(x) \
.globl _C_LABEL(x); \
_C_LABEL(x):
/*
* Macros to panic and printf from assembly language.
*/
#define PANIC(msg) \
la a0, 9f; \
jal _C_LABEL(panic); \
MSG(msg)
#define PRINTF(msg) \
la a0, 9f; \
jal _C_LABEL(printf); \
MSG(msg)
#define MSG(msg) \
.rdata; \
9: .asciiz msg; \
.text
#define ASMSTR(str) \
.asciiz str; \
.align 3
/*
* XXX retain dialects XXX
*/
#define ALEAF(x) \
.globl _C_LABEL(x); \
AENT (_C_LABEL(x)) \
_C_LABEL(x):
#define NLEAF(x) \
.globl _C_LABEL(x); \
.ent _C_LABEL(x), 0; \
_C_LABEL(x): ; \
.frame sp, 0, ra
#define NON_LEAF(x, fsize, retpc) \
.globl _C_LABEL(x); \
.ent _C_LABEL(x), 0; \
_C_LABEL(x): ; \
.frame sp, fsize, retpc; \
MCOUNT
#define NNON_LEAF(x, fsize, retpc) \
.globl _C_LABEL(x); \
.ent _C_LABEL(x), 0; \
_C_LABEL(x): ; \
.frame sp, fsize, retpc
/*
* While it would be nice to be compatible with the SGI
* REG_L and REG_S macros, because they do not take parameters, it
* is impossible to use them with the _MIPS_SIM_ABIX32 model.
*
* These macros hide the use of mips3 instructions from the
* assembler to prevent the assembler from generating 64-bit style
* ABI calls.
*/
#if defined(_MIPS_BSD_SIM) && _MIPS_BSD_SIM_ != _MIPS_SIM_ABI32
#define REG_L ld
#define REG_S sd
#define REG_LI dli
#define REG_PROLOGUE .set push ; .set mips3
#define REG_EPILOGUE .set pop
#define SZREG 8
#else
#define REG_L lw
#define REG_S sw
#define REG_LI li
#define REG_PROLOGUE .set push
#define REG_EPILOGUE .set pop
#define SZREG 4
#endif /* _MIPS_BSD_SIM */
#ifndef _KERNEL
#include <machine/pubassym.h>
#endif
#endif /* _MIPS_ASM_H */
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