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