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/* $OpenBSD: asm.h,v 1.7 2004/10/20 12:49:15 pefo Exp $ */
/*
* Copyright (c) 2001-2002 Opsycon AB (www.opsycon.se / www.opsycon.com)
*
* 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.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 _MIPS64_ASM_H
#define _MIPS64_ASM_H
#include <machine/regdef.h>
#ifdef NEED_OLD_RM7KFIX
#define ITLBNOPFIX nop;nop;nop;nop;nop;nop;nop;nop;nop;nop;
#else
#define ITLBNOPFIX nop;nop;nop;nop
#endif
#define _MIPS_ISA_MIPS1 1 /* R2000/R3000 */
#define _MIPS_ISA_MIPS2 2 /* R4000/R6000 */
#define _MIPS_ISA_MIPS3 3 /* R4000 */
#define _MIPS_ISA_MIPS4 4 /* TFP (R1x000) */
#ifdef __linux__
#define _MIPS_ISA_MIPS5 5
#define _MIPS_ISA_MIPS32 6
#define _MIPS_ISA_MIPS64 7
#else
#define _MIPS_ISA_MIPS32 32 /* MIPS32 */
#endif
#if !defined(ABICALLS) && !defined(_NO_ABICALLS)
#define ABICALLS .abicalls
#endif
#if defined(ABICALLS) && !defined(_KERNEL)
ABICALLS
#endif
#define _C_LABEL(x) x /* XXX Obsolete but keep for a while */
#if !defined(__MIPSEL__) && !defined(__MIPSEB__)
#error "__MIPSEL__ or __MIPSEB__ must be defined"
#endif
/*
* Define how to access unaligned data word
*/
#if defined(__MIPSEL__)
#define LWLO lwl
#define LWHI lwr
#define SWLO swl
#define SWHI swr
#define LDLO ldl
#define LDHI ldr
#define SDLO sdl
#define SDHI sdr
#endif
#if defined(__MIPSEB__)
#define LWLO lwr
#define LWHI lwl
#define SWLO swr
#define SWHI swl
#define LDLO ldr
#define LDHI ldl
#define SDLO sdr
#define SDHI sdl
#endif
/*
* Define programming environment for ABI.
*/
#if defined(ABICALLS) && !defined(_KERNEL) && !defined(_STANDALONE)
#ifndef _MIPS_SIM
#define _MIPS_SIM 1
#define _ABIO32 1
#endif
#ifndef _MIPS_ISA
#define _MIPS_ISA 2
#define _MIPS_ISA_MIPS2 2
#endif
#if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32)
#define NARGSAVE 4
#define SETUP_GP \
.set noreorder; \
.cpload t9; \
.set reorder;
#define SAVE_GP(x) \
.cprestore x
#define SETUP_GP64(gpoff, name)
#define RESTORE_GP64
#endif
#if (_MIPS_SIM == _ABI64) || (_MIPS_SIM == _ABIN32)
#define NARGSAVE 0
#define SETUP_GP
#define SAVE_GP(x)
#define SETUP_GP64(gpoff, name) \
.cpsetup t9, gpoff, name
#define RESTORE_GP64 \
.cpreturn
#endif
#define MKFSIZ(narg,locals) (((narg+locals)*REGSZ+31)&(~31))
#else /* defined(ABICALLS) && !defined(_KERNEL) */
#define NARGSAVE 4
#define SETUP_GP
#define SAVE_GP(x)
#define ALIGNSZ 16 /* Stack layout alignment */
#define FRAMESZ(sz) (((sz) + (ALIGNSZ-1)) & ~(ALIGNSZ-1))
#endif
/*
* Basic register operations based on selected ISA
*/
#if (_MIPS_ISA == _MIPS_ISA_MIPS1 || _MIPS_ISA == _MIPS_ISA_MIPS2 || _MIPS_ISA == _MIPS_ISA_MIPS32)
#define REGSZ 4 /* 32 bit mode register size */
#define LOGREGSZ 2 /* log rsize */
#define REG_S sw
#define REG_L lw
#define CF_SZ 24 /* Call frame size */
#define CF_ARGSZ 16 /* Call frame arg size */
#define CF_RA_OFFS 20 /* Call ra save offset */
#endif
#if (_MIPS_ISA == _MIPS_ISA_MIPS3 || _MIPS_ISA == _MIPS_ISA_MIPS4)
#define REGSZ 8 /* 64 bit mode register size */
#define LOGREGSZ 3 /* log rsize */
#define REG_S sd
#define REG_L ld
#define CF_SZ 48 /* Call frame size (multiple of ALIGNSZ) */
#define CF_ARGSZ 32 /* Call frame arg size */
#define CF_RA_OFFS 40 /* Call ra save offset */
#endif
#define REGSZ_FP 8 /* 64 bit FP register size */
#ifndef __LP64__
#define PTR_L lw
#define PTR_S sw
#define PTR_SUB sub
#define PTR_ADD add
#define PTR_SUBU subu
#define PTR_ADDU addu
#define LI li
#define LA la
#define PTR_SLL sll
#define PTR_SRL srl
#define PTR_VAL .word
#else
#define PTR_L ld
#define PTR_S sd
#define PTR_ADD dadd
#define PTR_SUB dsub
#define PTR_SUBU dsubu
#define PTR_ADDU daddu
#define LI dli
#define LA dla
#define PTR_SLL dsll
#define PTR_SRL dsrl
#define PTR_VAL .dword
#endif
/*
* Define -pg profile entry code.
*/
#if defined(XGPROF) || defined(XPROF)
#define MCOUNT \
PTR_SUBU sp, sp, 32; \
SAVE_GP(16); \
sw ra, 28(sp); \
sw gp, 24(sp); \
.set noat; \
.set noreorder; \
move AT, ra; \
jal _mcount; \
PTR_SUBU sp, sp, 8; \
lw ra, 28(sp); \
PTR_ADDU sp, sp, 32; \
.set reorder; \
.set at;
#else
#define MCOUNT
#endif
/*
* LEAF(x, fsize)
*
* Declare a leaf routine.
*/
#define LEAF(x, fsize) \
.align 3; \
.globl x; \
.ent x, 0; \
x: ; \
.frame sp, fsize, ra; \
SETUP_GP \
MCOUNT
#define ALEAF(x) \
.globl x; \
x:
/*
* NLEAF(x)
*
* Declare a non-profiled leaf routine.
*/
#define NLEAF(x, fsize) \
.align 3; \
.globl x; \
.ent x, 0; \
x: ; \
.frame sp, fsize, ra; \
SETUP_GP
/*
* NON_LEAF(x)
*
* Declare a non-leaf routine (a routine that makes other C calls).
*/
#define NON_LEAF(x, fsize, retpc) \
.align 3; \
.globl x; \
.ent x, 0; \
x: ; \
.frame sp, fsize, retpc; \
SETUP_GP \
MCOUNT
/*
* NNON_LEAF(x)
*
* Declare a non-profiled non-leaf routine
* (a routine that makes other C calls).
*/
#define NNON_LEAF(x, fsize, retpc) \
.align 3; \
.globl x; \
.ent x, 0; \
x: ; \
.frame sp, fsize, retpc \
SETUP_GP
/*
* END(x)
*
* Mark end of a procedure.
*/
#define END(x) \
.end x
/*
* Macros to panic and printf from assembly language.
*/
#define PANIC(msg) \
LA a0, 9f; \
jal panic; \
nop ; \
MSG(msg)
#define PRINTF(msg) \
la a0, 9f; \
jal printf; \
nop ; \
MSG(msg)
#define MSG(msg) \
.rdata; \
9: .asciiz msg; \
.text
#define ASMSTR(str) \
.asciiz str; \
.align 3
#endif /* !_MIPS_ASM_H */
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