1 /* $OpenBSD: asm.h,v 1.7 2004/10/20 12:49:15 pefo Exp $ */ 2 3 /* 4 * Copyright (c) 2001-2002 Opsycon AB (www.opsycon.se / www.opsycon.com) 5 * 6 * Redistribution and use in source and binary forms, with or without 7 * modification, are permitted provided that the following conditions 8 * are met: 9 * 1. Redistributions of source code must retain the above copyright 10 * notice, this list of conditions and the following disclaimer. 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS 16 * OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 18 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 19 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 20 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 21 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 23 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 24 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 25 * SUCH DAMAGE. 26 * 27 */ 28 29 #pragma once 30 31 #define __bionic_asm_align 16 32 33 #undef __bionic_asm_custom_entry 34 #undef __bionic_asm_custom_end 35 #define __bionic_asm_custom_entry(f) .ent f 36 #define __bionic_asm_custom_end(f) .end f 37 38 #define _MIPS_ISA_MIPS1 1 /* R2000/R3000 */ 39 #define _MIPS_ISA_MIPS2 2 /* R4000/R6000 */ 40 #define _MIPS_ISA_MIPS3 3 /* R4000 */ 41 #define _MIPS_ISA_MIPS4 4 /* TFP (R1x000) */ 42 #define _MIPS_ISA_MIPS5 5 43 #define _MIPS_ISA_MIPS32 6 44 #define _MIPS_ISA_MIPS64 7 45 46 #if !defined(ABICALLS) && !defined(_NO_ABICALLS) 47 #define ABICALLS .abicalls 48 #endif 49 50 #if defined(ABICALLS) && !defined(_KERNEL) 51 ABICALLS 52 #endif 53 54 /* 55 * Define how to access unaligned data word 56 */ 57 #define LWLO lwl 58 #define LWHI lwr 59 #define SWLO swl 60 #define SWHI swr 61 #define LDLO ldl 62 #define LDHI ldr 63 #define SDLO sdl 64 #define SDHI sdr 65 66 /* 67 * Define programming environment for ABI. 68 */ 69 #if defined(ABICALLS) && !defined(_KERNEL) && !defined(_STANDALONE) 70 71 #if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32) 72 #define NARGSAVE 4 73 74 #define SETUP_GP \ 75 .set noreorder; \ 76 .cpload $t9; \ 77 .set reorder; 78 79 #define SAVE_GP(x) \ 80 .cprestore x 81 82 #define SETUP_GP64(gpoff, name) 83 #define RESTORE_GP64 84 #endif 85 86 #if (_MIPS_SIM == _ABI64) || (_MIPS_SIM == _ABIN32) 87 #define NARGSAVE 0 88 89 #define SETUP_GP 90 #define SAVE_GP(x) 91 #define SETUP_GP64(gpoff, name) \ 92 .cpsetup $t9, gpoff, name 93 #define RESTORE_GP64 \ 94 .cpreturn 95 #endif 96 97 #define MKFSIZ(narg,locals) (((narg+locals)*REGSZ+31)&(~31)) 98 99 #else /* defined(ABICALLS) && !defined(_KERNEL) */ 100 101 #define NARGSAVE 4 102 #define SETUP_GP 103 #define SAVE_GP(x) 104 105 #define ALIGNSZ 16 /* Stack layout alignment */ 106 #define FRAMESZ(sz) (((sz) + (ALIGNSZ-1)) & ~(ALIGNSZ-1)) 107 108 #endif 109 110 /* 111 * Basic register operations based on selected ISA 112 */ 113 #if (_MIPS_ISA == _MIPS_ISA_MIPS1 || _MIPS_ISA == _MIPS_ISA_MIPS2 || _MIPS_ISA == _MIPS_ISA_MIPS32) 114 #define REGSZ 4 /* 32 bit mode register size */ 115 #define LOGREGSZ 2 /* log rsize */ 116 #define REG_S sw 117 #define REG_L lw 118 #define CF_SZ 24 /* Call frame size */ 119 #define CF_ARGSZ 16 /* Call frame arg size */ 120 #define CF_RA_OFFS 20 /* Call ra save offset */ 121 #endif 122 123 #if (_MIPS_ISA == _MIPS_ISA_MIPS3 || _MIPS_ISA == _MIPS_ISA_MIPS4 || _MIPS_ISA == _MIPS_ISA_MIPS64) 124 #define REGSZ 8 /* 64 bit mode register size */ 125 #define LOGREGSZ 3 /* log rsize */ 126 #define REG_S sd 127 #define REG_L ld 128 #define CF_SZ 48 /* Call frame size (multiple of ALIGNSZ) */ 129 #define CF_ARGSZ 32 /* Call frame arg size */ 130 #define CF_RA_OFFS 40 /* Call ra save offset */ 131 #endif 132 133 #define REGSZ_FP 8 /* 64 bit FP register size */ 134 135 #ifndef __LP64__ 136 #define PTR_L lw 137 #define PTR_S sw 138 #define PTR_SUB sub 139 #define PTR_ADD add 140 #define PTR_SUBU subu 141 #define PTR_ADDU addu 142 #define LI li 143 #define LA la 144 #define PTR_SLL sll 145 #define PTR_SRL srl 146 #define PTR_VAL .word 147 #else 148 #define PTR_L ld 149 #define PTR_S sd 150 #define PTR_ADD dadd 151 #define PTR_SUB dsub 152 #define PTR_SUBU dsubu 153 #define PTR_ADDU daddu 154 #define LI dli 155 #define LA dla 156 #define PTR_SLL dsll 157 #define PTR_SRL dsrl 158 #define PTR_VAL .dword 159 #endif 160 161 /* 162 * LEAF(x, fsize) 163 * 164 * Declare a leaf routine. 165 */ 166 #define LEAF(x, fsize) \ 167 .align 3; \ 168 .globl x; \ 169 .ent x, 0; \ 170 x: ; \ 171 .cfi_startproc; \ 172 .frame $sp, fsize, $ra; \ 173 SETUP_GP \ 174 175 /* 176 * NON_LEAF(x) 177 * 178 * Declare a non-leaf routine (a routine that makes other C calls). 179 */ 180 #define NON_LEAF(x, fsize, retpc) \ 181 .align 3; \ 182 .globl x; \ 183 .ent x, 0; \ 184 x: ; \ 185 .cfi_startproc; \ 186 .frame $sp, fsize, retpc; \ 187 SETUP_GP \ 188
