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 #ifndef _MIPS64_ASM_H 29 #define _MIPS64_ASM_H 30 31 #ifndef _ALIGN_TEXT 32 # define _ALIGN_TEXT .align 4 33 #endif 34 35 #undef __bionic_asm_custom_entry 36 #undef __bionic_asm_custom_end 37 #define __bionic_asm_custom_entry(f) .ent f 38 #define __bionic_asm_custom_end(f) .end f 39 40 #include <machine/regdef.h> 41 42 #define _MIPS_ISA_MIPS1 1 /* R2000/R3000 */ 43 #define _MIPS_ISA_MIPS2 2 /* R4000/R6000 */ 44 #define _MIPS_ISA_MIPS3 3 /* R4000 */ 45 #define _MIPS_ISA_MIPS4 4 /* TFP (R1x000) */ 46 #define _MIPS_ISA_MIPS5 5 47 #define _MIPS_ISA_MIPS32 6 48 #define _MIPS_ISA_MIPS64 7 49 50 #if !defined(ABICALLS) && !defined(_NO_ABICALLS) 51 #define ABICALLS .abicalls 52 #endif 53 54 #if defined(ABICALLS) && !defined(_KERNEL) 55 ABICALLS 56 #endif 57 58 #if !defined(__MIPSEL__) && !defined(__MIPSEB__) 59 #error "__MIPSEL__ or __MIPSEB__ must be defined" 60 #endif 61 /* 62 * Define how to access unaligned data word 63 */ 64 #if defined(__MIPSEL__) 65 #define LWLO lwl 66 #define LWHI lwr 67 #define SWLO swl 68 #define SWHI swr 69 #define LDLO ldl 70 #define LDHI ldr 71 #define SDLO sdl 72 #define SDHI sdr 73 #endif 74 #if defined(__MIPSEB__) 75 #define LWLO lwr 76 #define LWHI lwl 77 #define SWLO swr 78 #define SWHI swl 79 #define LDLO ldr 80 #define LDHI ldl 81 #define SDLO sdr 82 #define SDHI sdl 83 #endif 84 85 /* 86 * Define programming environment for ABI. 87 */ 88 #if defined(ABICALLS) && !defined(_KERNEL) && !defined(_STANDALONE) 89 90 #if (_MIPS_SIM == _ABIO32) || (_MIPS_SIM == _ABI32) 91 #define NARGSAVE 4 92 93 #define SETUP_GP \ 94 .set noreorder; \ 95 .cpload t9; \ 96 .set reorder; 97 98 #define SAVE_GP(x) \ 99 .cprestore x 100 101 #define SETUP_GP64(gpoff, name) 102 #define RESTORE_GP64 103 #endif 104 105 #if (_MIPS_SIM == _ABI64) || (_MIPS_SIM == _ABIN32) 106 #define NARGSAVE 0 107 108 #define SETUP_GP 109 #define SAVE_GP(x) 110 #define SETUP_GP64(gpoff, name) \ 111 .cpsetup t9, gpoff, name 112 #define RESTORE_GP64 \ 113 .cpreturn 114 #endif 115 116 #define MKFSIZ(narg,locals) (((narg+locals)*REGSZ+31)&(~31)) 117 118 #else /* defined(ABICALLS) && !defined(_KERNEL) */ 119 120 #define NARGSAVE 4 121 #define SETUP_GP 122 #define SAVE_GP(x) 123 124 #define ALIGNSZ 16 /* Stack layout alignment */ 125 #define FRAMESZ(sz) (((sz) + (ALIGNSZ-1)) & ~(ALIGNSZ-1)) 126 127 #endif 128 129 /* 130 * Basic register operations based on selected ISA 131 */ 132 #if (_MIPS_ISA == _MIPS_ISA_MIPS1 || _MIPS_ISA == _MIPS_ISA_MIPS2 || _MIPS_ISA == _MIPS_ISA_MIPS32) 133 #define REGSZ 4 /* 32 bit mode register size */ 134 #define LOGREGSZ 2 /* log rsize */ 135 #define REG_S sw 136 #define REG_L lw 137 #define CF_SZ 24 /* Call frame size */ 138 #define CF_ARGSZ 16 /* Call frame arg size */ 139 #define CF_RA_OFFS 20 /* Call ra save offset */ 140 #endif 141 142 #if (_MIPS_ISA == _MIPS_ISA_MIPS3 || _MIPS_ISA == _MIPS_ISA_MIPS4 || _MIPS_ISA == _MIPS_ISA_MIPS64) 143 #define REGSZ 8 /* 64 bit mode register size */ 144 #define LOGREGSZ 3 /* log rsize */ 145 #define REG_S sd 146 #define REG_L ld 147 #define CF_SZ 48 /* Call frame size (multiple of ALIGNSZ) */ 148 #define CF_ARGSZ 32 /* Call frame arg size */ 149 #define CF_RA_OFFS 40 /* Call ra save offset */ 150 #endif 151 152 #define REGSZ_FP 8 /* 64 bit FP register size */ 153 154 #ifndef __LP64__ 155 #define PTR_L lw 156 #define PTR_S sw 157 #define PTR_SUB sub 158 #define PTR_ADD add 159 #define PTR_SUBU subu 160 #define PTR_ADDU addu 161 #define LI li 162 #define LA la 163 #define PTR_SLL sll 164 #define PTR_SRL srl 165 #define PTR_VAL .word 166 #else 167 #define PTR_L ld 168 #define PTR_S sd 169 #define PTR_ADD dadd 170 #define PTR_SUB dsub 171 #define PTR_SUBU dsubu 172 #define PTR_ADDU daddu 173 #define LI dli 174 #define LA dla 175 #define PTR_SLL dsll 176 #define PTR_SRL dsrl 177 #define PTR_VAL .dword 178 #endif 179 180 /* 181 * LEAF(x, fsize) 182 * 183 * Declare a leaf routine. 184 */ 185 #define LEAF(x, fsize) \ 186 .align 3; \ 187 .globl x; \ 188 .ent x, 0; \ 189 x: ; \ 190 .cfi_startproc; \ 191 .frame sp, fsize, ra; \ 192 SETUP_GP \ 193 194 /* 195 * NON_LEAF(x) 196 * 197 * Declare a non-leaf routine (a routine that makes other C calls). 198 */ 199 #define NON_LEAF(x, fsize, retpc) \ 200 .align 3; \ 201 .globl x; \ 202 .ent x, 0; \ 203 x: ; \ 204 .cfi_startproc; \ 205 .frame sp, fsize, retpc; \ 206 SETUP_GP \ 207 208 #endif /* !_MIPS_ASM_H */ 209