1 /* 2 * This header file contains assembly-language definitions (assembly 3 * macros, etc.) for this specific Xtensa processor's TIE extensions 4 * and options. It is customized to this Xtensa processor configuration. 5 * 6 * This file is subject to the terms and conditions of the GNU General Public 7 * License. See the file "COPYING" in the main directory of this archive 8 * for more details. 9 * 10 * Copyright (C) 1999-2008 Tensilica Inc. 11 */ 12 13 #ifndef _XTENSA_CORE_TIE_ASM_H 14 #define _XTENSA_CORE_TIE_ASM_H 15 16 /* Selection parameter values for save-area save/restore macros: */ 17 /* Option vs. TIE: */ 18 #define XTHAL_SAS_TIE 0x0001 /* custom extension or coprocessor */ 19 #define XTHAL_SAS_OPT 0x0002 /* optional (and not a coprocessor) */ 20 /* Whether used automatically by compiler: */ 21 #define XTHAL_SAS_NOCC 0x0004 /* not used by compiler w/o special opts/code */ 22 #define XTHAL_SAS_CC 0x0008 /* used by compiler without special opts/code */ 23 /* ABI handling across function calls: */ 24 #define XTHAL_SAS_CALR 0x0010 /* caller-saved */ 25 #define XTHAL_SAS_CALE 0x0020 /* callee-saved */ 26 #define XTHAL_SAS_GLOB 0x0040 /* global across function calls (in thread) */ 27 /* Misc */ 28 #define XTHAL_SAS_ALL 0xFFFF /* include all default NCP contents */ 29 30 31 32 /* Macro to save all non-coprocessor (extra) custom TIE and optional state 33 * (not including zero-overhead loop registers). 34 * Save area ptr (clobbered): ptr (16 byte aligned) 35 * Scratch regs (clobbered): at1..at4 (only first XCHAL_NCP_NUM_ATMPS needed) 36 */ 37 .macro xchal_ncp_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL 38 xchal_sa_start \continue, \ofs 39 .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select 40 xchal_sa_align \ptr, 0, 1024-4, 4, 4 41 rsr \at1, BR // boolean option 42 s32i \at1, \ptr, .Lxchal_ofs_ + 0 43 .set .Lxchal_ofs_, .Lxchal_ofs_ + 4 44 .endif 45 .endm // xchal_ncp_store 46 47 /* Macro to save all non-coprocessor (extra) custom TIE and optional state 48 * (not including zero-overhead loop registers). 49 * Save area ptr (clobbered): ptr (16 byte aligned) 50 * Scratch regs (clobbered): at1..at4 (only first XCHAL_NCP_NUM_ATMPS needed) 51 */ 52 .macro xchal_ncp_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL 53 xchal_sa_start \continue, \ofs 54 .ifeq (XTHAL_SAS_OPT | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select 55 xchal_sa_align \ptr, 0, 1024-4, 4, 4 56 l32i \at1, \ptr, .Lxchal_ofs_ + 0 57 wsr \at1, BR // boolean option 58 .set .Lxchal_ofs_, .Lxchal_ofs_ + 4 59 .endif 60 .endm // xchal_ncp_load 61 62 63 64 #define XCHAL_NCP_NUM_ATMPS 1 65 66 67 68 /* Macro to save the state of TIE coprocessor FPU. 69 * Save area ptr (clobbered): ptr (16 byte aligned) 70 * Scratch regs (clobbered): at1..at4 (only first XCHAL_CP0_NUM_ATMPS needed) 71 */ 72 #define xchal_cp_FPU_store xchal_cp0_store 73 /* #define xchal_cp_FPU_store_a2 xchal_cp0_store a2 a3 a4 a5 a6 */ 74 .macro xchal_cp0_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL 75 xchal_sa_start \continue, \ofs 76 .ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select 77 xchal_sa_align \ptr, 0, 0, 1, 16 78 rur232 \at1 // FCR 79 s32i \at1, \ptr, 0 80 rur233 \at1 // FSR 81 s32i \at1, \ptr, 4 82 SSI f0, \ptr, 8 83 SSI f1, \ptr, 12 84 SSI f2, \ptr, 16 85 SSI f3, \ptr, 20 86 SSI f4, \ptr, 24 87 SSI f5, \ptr, 28 88 SSI f6, \ptr, 32 89 SSI f7, \ptr, 36 90 SSI f8, \ptr, 40 91 SSI f9, \ptr, 44 92 SSI f10, \ptr, 48 93 SSI f11, \ptr, 52 94 SSI f12, \ptr, 56 95 SSI f13, \ptr, 60 96 SSI f14, \ptr, 64 97 SSI f15, \ptr, 68 98 .set .Lxchal_ofs_, .Lxchal_ofs_ + 72 99 .endif 100 .endm // xchal_cp0_store 101 102 /* Macro to restore the state of TIE coprocessor FPU. 103 * Save area ptr (clobbered): ptr (16 byte aligned) 104 * Scratch regs (clobbered): at1..at4 (only first XCHAL_CP0_NUM_ATMPS needed) 105 */ 106 #define xchal_cp_FPU_load xchal_cp0_load 107 /* #define xchal_cp_FPU_load_a2 xchal_cp0_load a2 a3 a4 a5 a6 */ 108 .macro xchal_cp0_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL 109 xchal_sa_start \continue, \ofs 110 .ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select 111 xchal_sa_align \ptr, 0, 0, 1, 16 112 l32i \at1, \ptr, 0 113 wur232 \at1 // FCR 114 l32i \at1, \ptr, 4 115 wur233 \at1 // FSR 116 LSI f0, \ptr, 8 117 LSI f1, \ptr, 12 118 LSI f2, \ptr, 16 119 LSI f3, \ptr, 20 120 LSI f4, \ptr, 24 121 LSI f5, \ptr, 28 122 LSI f6, \ptr, 32 123 LSI f7, \ptr, 36 124 LSI f8, \ptr, 40 125 LSI f9, \ptr, 44 126 LSI f10, \ptr, 48 127 LSI f11, \ptr, 52 128 LSI f12, \ptr, 56 129 LSI f13, \ptr, 60 130 LSI f14, \ptr, 64 131 LSI f15, \ptr, 68 132 .set .Lxchal_ofs_, .Lxchal_ofs_ + 72 133 .endif 134 .endm // xchal_cp0_load 135 136 #define XCHAL_CP0_NUM_ATMPS 1 137 138 /* Macro to save the state of TIE coprocessor XAD. 139 * Save area ptr (clobbered): ptr (16 byte aligned) 140 * Scratch regs (clobbered): at1..at4 (only first XCHAL_CP6_NUM_ATMPS needed) 141 */ 142 #define xchal_cp_XAD_store xchal_cp6_store 143 /* #define xchal_cp_XAD_store_a2 xchal_cp6_store a2 a3 a4 a5 a6 */ 144 .macro xchal_cp6_store ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL 145 xchal_sa_start \continue, \ofs 146 .ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select 147 xchal_sa_align \ptr, 0, 0, 1, 16 148 rur0 \at1 // LDCBHI 149 s32i \at1, \ptr, 0 150 rur1 \at1 // LDCBLO 151 s32i \at1, \ptr, 4 152 rur2 \at1 // STCBHI 153 s32i \at1, \ptr, 8 154 rur3 \at1 // STCBLO 155 s32i \at1, \ptr, 12 156 rur8 \at1 // LDBRBASE 157 s32i \at1, \ptr, 16 158 rur9 \at1 // LDBROFF 159 s32i \at1, \ptr, 20 160 rur10 \at1 // LDBRINC 161 s32i \at1, \ptr, 24 162 rur11 \at1 // STBRBASE 163 s32i \at1, \ptr, 28 164 rur12 \at1 // STBROFF 165 s32i \at1, \ptr, 32 166 rur13 \at1 // STBRINC 167 s32i \at1, \ptr, 36 168 rur24 \at1 // SCRATCH0 169 s32i \at1, \ptr, 40 170 rur25 \at1 // SCRATCH1 171 s32i \at1, \ptr, 44 172 rur26 \at1 // SCRATCH2 173 s32i \at1, \ptr, 48 174 rur27 \at1 // SCRATCH3 175 s32i \at1, \ptr, 52 176 WRAS128I wra0, \ptr, 64 177 WRAS128I wra1, \ptr, 80 178 WRAS128I wra2, \ptr, 96 179 WRAS128I wra3, \ptr, 112 180 WRAS128I wra4, \ptr, 128 181 WRAS128I wra5, \ptr, 144 182 WRAS128I wra6, \ptr, 160 183 WRAS128I wra7, \ptr, 176 184 WRAS128I wra8, \ptr, 192 185 WRAS128I wra9, \ptr, 208 186 WRAS128I wra10, \ptr, 224 187 WRAS128I wra11, \ptr, 240 188 WRAS128I wra12, \ptr, 256 189 WRAS128I wra13, \ptr, 272 190 WRAS128I wra14, \ptr, 288 191 WRAS128I wra15, \ptr, 304 192 WRBS128I wrb0, \ptr, 320 193 WRBS128I wrb1, \ptr, 336 194 WRBS128I wrb2, \ptr, 352 195 WRBS128I wrb3, \ptr, 368 196 WRBS128I wrb4, \ptr, 384 197 WRBS128I wrb5, \ptr, 400 198 WRBS128I wrb6, \ptr, 416 199 WRBS128I wrb7, \ptr, 432 200 WRBS128I wrb8, \ptr, 448 201 WRBS128I wrb9, \ptr, 464 202 WRBS128I wrb10, \ptr, 480 203 WRBS128I wrb11, \ptr, 496 204 WRBS128I wrb12, \ptr, 512 205 WRBS128I wrb13, \ptr, 528 206 WRBS128I wrb14, \ptr, 544 207 WRBS128I wrb15, \ptr, 560 208 .set .Lxchal_ofs_, .Lxchal_ofs_ + 576 209 .endif 210 .endm // xchal_cp6_store 211 212 /* Macro to restore the state of TIE coprocessor XAD. 213 * Save area ptr (clobbered): ptr (16 byte aligned) 214 * Scratch regs (clobbered): at1..at4 (only first XCHAL_CP6_NUM_ATMPS needed) 215 */ 216 #define xchal_cp_XAD_load xchal_cp6_load 217 /* #define xchal_cp_XAD_load_a2 xchal_cp6_load a2 a3 a4 a5 a6 */ 218 .macro xchal_cp6_load ptr at1 at2 at3 at4 continue=0 ofs=-1 select=XTHAL_SAS_ALL 219 xchal_sa_start \continue, \ofs 220 .ifeq (XTHAL_SAS_TIE | XTHAL_SAS_NOCC | XTHAL_SAS_CALR) & ~\select 221 xchal_sa_align \ptr, 0, 0, 1, 16 222 l32i \at1, \ptr, 0 223 wur0 \at1 // LDCBHI 224 l32i \at1, \ptr, 4 225 wur1 \at1 // LDCBLO 226 l32i \at1, \ptr, 8 227 wur2 \at1 // STCBHI 228 l32i \at1, \ptr, 12 229 wur3 \at1 // STCBLO 230 l32i \at1, \ptr, 16 231 wur8 \at1 // LDBRBASE 232 l32i \at1, \ptr, 20 233 wur9 \at1 // LDBROFF 234 l32i \at1, \ptr, 24 235 wur10 \at1 // LDBRINC 236 l32i \at1, \ptr, 28 237 wur11 \at1 // STBRBASE 238 l32i \at1, \ptr, 32 239 wur12 \at1 // STBROFF 240 l32i \at1, \ptr, 36 241 wur13 \at1 // STBRINC 242 l32i \at1, \ptr, 40 243 wur24 \at1 // SCRATCH0 244 l32i \at1, \ptr, 44 245 wur25 \at1 // SCRATCH1 246 l32i \at1, \ptr, 48 247 wur26 \at1 // SCRATCH2 248 l32i \at1, \ptr, 52 249 wur27 \at1 // SCRATCH3 250 WRBL128I wrb0, \ptr, 320 251 WRBL128I wrb1, \ptr, 336 252 WRBL128I wrb2, \ptr, 352 253 WRBL128I wrb3, \ptr, 368 254 WRBL128I wrb4, \ptr, 384 255 WRBL128I wrb5, \ptr, 400 256 WRBL128I wrb6, \ptr, 416 257 WRBL128I wrb7, \ptr, 432 258 WRBL128I wrb8, \ptr, 448 259 WRBL128I wrb9, \ptr, 464 260 WRBL128I wrb10, \ptr, 480 261 WRBL128I wrb11, \ptr, 496 262 WRBL128I wrb12, \ptr, 512 263 WRBL128I wrb13, \ptr, 528 264 WRBL128I wrb14, \ptr, 544 265 WRBL128I wrb15, \ptr, 560 266 WRAL128I wra0, \ptr, 64 267 WRAL128I wra1, \ptr, 80 268 WRAL128I wra2, \ptr, 96 269 WRAL128I wra3, \ptr, 112 270 WRAL128I wra4, \ptr, 128 271 WRAL128I wra5, \ptr, 144 272 WRAL128I wra6, \ptr, 160 273 WRAL128I wra7, \ptr, 176 274 WRAL128I wra8, \ptr, 192 275 WRAL128I wra9, \ptr, 208 276 WRAL128I wra10, \ptr, 224 277 WRAL128I wra11, \ptr, 240 278 WRAL128I wra12, \ptr, 256 279 WRAL128I wra13, \ptr, 272 280 WRAL128I wra14, \ptr, 288 281 WRAL128I wra15, \ptr, 304 282 .set .Lxchal_ofs_, .Lxchal_ofs_ + 576 283 .endif 284 .endm // xchal_cp6_load 285 286 #define XCHAL_CP6_NUM_ATMPS 1 287 #define XCHAL_SA_NUM_ATMPS 1 288 289 /* Empty macros for unconfigured coprocessors: */ 290 .macro xchal_cp1_store p a b c d continue=0 ofs=-1 select=-1 ; .endm 291 .macro xchal_cp1_load p a b c d continue=0 ofs=-1 select=-1 ; .endm 292 .macro xchal_cp2_store p a b c d continue=0 ofs=-1 select=-1 ; .endm 293 .macro xchal_cp2_load p a b c d continue=0 ofs=-1 select=-1 ; .endm 294 .macro xchal_cp3_store p a b c d continue=0 ofs=-1 select=-1 ; .endm 295 .macro xchal_cp3_load p a b c d continue=0 ofs=-1 select=-1 ; .endm 296 .macro xchal_cp4_store p a b c d continue=0 ofs=-1 select=-1 ; .endm 297 .macro xchal_cp4_load p a b c d continue=0 ofs=-1 select=-1 ; .endm 298 .macro xchal_cp5_store p a b c d continue=0 ofs=-1 select=-1 ; .endm 299 .macro xchal_cp5_load p a b c d continue=0 ofs=-1 select=-1 ; .endm 300 .macro xchal_cp7_store p a b c d continue=0 ofs=-1 select=-1 ; .endm 301 .macro xchal_cp7_load p a b c d continue=0 ofs=-1 select=-1 ; .endm 302 303 #endif /*_XTENSA_CORE_TIE_ASM_H*/ 304 305