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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 | /* * This file is subject to the terms and conditions of the GNU General Public * License. See the file "COPYING" in the main directory of this archive * for more details. * * Copyright (C) 1996, 98, 99, 2000, 01 Ralf Baechle * * Multi-arch abstraction and asm macros for easier reading: * Copyright (C) 1996 David S. Miller (davem@davemloft.net) * * Carsten Langgaard, carstenl@mips.com * Copyright (C) 2000 MIPS Technologies, Inc. * Copyright (C) 1999, 2001 Silicon Graphics, Inc. */ #include <asm/asm.h> #include <asm/asmmacro.h> #include <asm/errno.h> #include <asm/export.h> #include <asm/fpregdef.h> #include <asm/mipsregs.h> #include <asm/asm-offsets.h> #include <asm/regdef.h> /* preprocessor replaces the fp in ".set fp=64" with $30 otherwise */ #undef fp .macro EX insn, reg, src .set push SET_HARDFLOAT .set nomacro .ex\@: \insn \reg, \src .set pop .section __ex_table,"a" PTR .ex\@, fault .previous .endm /* * Save a thread's fp context. */ LEAF(_save_fp) EXPORT_SYMBOL(_save_fp) #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ defined(CONFIG_CPU_MIPSR6) mfc0 t0, CP0_STATUS #endif fpu_save_double a0 t0 t1 # clobbers t1 jr ra END(_save_fp) /* * Restore a thread's fp context. */ LEAF(_restore_fp) #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ defined(CONFIG_CPU_MIPSR6) mfc0 t0, CP0_STATUS #endif fpu_restore_double a0 t0 t1 # clobbers t1 jr ra END(_restore_fp) #ifdef CONFIG_CPU_HAS_MSA /* * Save a thread's MSA vector context. */ LEAF(_save_msa) EXPORT_SYMBOL(_save_msa) msa_save_all a0 jr ra END(_save_msa) /* * Restore a thread's MSA vector context. */ LEAF(_restore_msa) msa_restore_all a0 jr ra END(_restore_msa) LEAF(_init_msa_upper) msa_init_all_upper jr ra END(_init_msa_upper) #endif .set noreorder /** * _save_fp_context() - save FP context from the FPU * @a0 - pointer to fpregs field of sigcontext * @a1 - pointer to fpc_csr field of sigcontext * * Save FP context, including the 32 FP data registers and the FP * control & status register, from the FPU to signal context. */ LEAF(_save_fp_context) .set push SET_HARDFLOAT cfc1 t1, fcr31 .set pop #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ defined(CONFIG_CPU_MIPSR6) .set push SET_HARDFLOAT #ifdef CONFIG_CPU_MIPSR2 .set mips32r2 .set fp=64 mfc0 t0, CP0_STATUS sll t0, t0, 5 bgez t0, 1f # skip storing odd if FR=0 nop #endif /* Store the 16 odd double precision registers */ EX sdc1 $f1, 8(a0) EX sdc1 $f3, 24(a0) EX sdc1 $f5, 40(a0) EX sdc1 $f7, 56(a0) EX sdc1 $f9, 72(a0) EX sdc1 $f11, 88(a0) EX sdc1 $f13, 104(a0) EX sdc1 $f15, 120(a0) EX sdc1 $f17, 136(a0) EX sdc1 $f19, 152(a0) EX sdc1 $f21, 168(a0) EX sdc1 $f23, 184(a0) EX sdc1 $f25, 200(a0) EX sdc1 $f27, 216(a0) EX sdc1 $f29, 232(a0) EX sdc1 $f31, 248(a0) 1: .set pop #endif .set push SET_HARDFLOAT /* Store the 16 even double precision registers */ EX sdc1 $f0, 0(a0) EX sdc1 $f2, 16(a0) EX sdc1 $f4, 32(a0) EX sdc1 $f6, 48(a0) EX sdc1 $f8, 64(a0) EX sdc1 $f10, 80(a0) EX sdc1 $f12, 96(a0) EX sdc1 $f14, 112(a0) EX sdc1 $f16, 128(a0) EX sdc1 $f18, 144(a0) EX sdc1 $f20, 160(a0) EX sdc1 $f22, 176(a0) EX sdc1 $f24, 192(a0) EX sdc1 $f26, 208(a0) EX sdc1 $f28, 224(a0) EX sdc1 $f30, 240(a0) EX sw t1, 0(a1) jr ra li v0, 0 # success .set pop END(_save_fp_context) /** * _restore_fp_context() - restore FP context to the FPU * @a0 - pointer to fpregs field of sigcontext * @a1 - pointer to fpc_csr field of sigcontext * * Restore FP context, including the 32 FP data registers and the FP * control & status register, from signal context to the FPU. */ LEAF(_restore_fp_context) EX lw t1, 0(a1) #if defined(CONFIG_64BIT) || defined(CONFIG_CPU_MIPSR2) || \ defined(CONFIG_CPU_MIPSR6) .set push SET_HARDFLOAT #ifdef CONFIG_CPU_MIPSR2 .set mips32r2 .set fp=64 mfc0 t0, CP0_STATUS sll t0, t0, 5 bgez t0, 1f # skip loading odd if FR=0 nop #endif EX ldc1 $f1, 8(a0) EX ldc1 $f3, 24(a0) EX ldc1 $f5, 40(a0) EX ldc1 $f7, 56(a0) EX ldc1 $f9, 72(a0) EX ldc1 $f11, 88(a0) EX ldc1 $f13, 104(a0) EX ldc1 $f15, 120(a0) EX ldc1 $f17, 136(a0) EX ldc1 $f19, 152(a0) EX ldc1 $f21, 168(a0) EX ldc1 $f23, 184(a0) EX ldc1 $f25, 200(a0) EX ldc1 $f27, 216(a0) EX ldc1 $f29, 232(a0) EX ldc1 $f31, 248(a0) 1: .set pop #endif .set push SET_HARDFLOAT EX ldc1 $f0, 0(a0) EX ldc1 $f2, 16(a0) EX ldc1 $f4, 32(a0) EX ldc1 $f6, 48(a0) EX ldc1 $f8, 64(a0) EX ldc1 $f10, 80(a0) EX ldc1 $f12, 96(a0) EX ldc1 $f14, 112(a0) EX ldc1 $f16, 128(a0) EX ldc1 $f18, 144(a0) EX ldc1 $f20, 160(a0) EX ldc1 $f22, 176(a0) EX ldc1 $f24, 192(a0) EX ldc1 $f26, 208(a0) EX ldc1 $f28, 224(a0) EX ldc1 $f30, 240(a0) ctc1 t1, fcr31 .set pop jr ra li v0, 0 # success END(_restore_fp_context) #ifdef CONFIG_CPU_HAS_MSA .macro op_one_wr op, idx, base .align 4 \idx: \op \idx, 0, \base jr ra nop .endm .macro op_msa_wr name, op LEAF(\name) .set push .set noreorder sll t0, a0, 4 PTR_LA t1, 0f PTR_ADDU t0, t0, t1 jr t0 nop op_one_wr \op, 0, a1 op_one_wr \op, 1, a1 op_one_wr \op, 2, a1 op_one_wr \op, 3, a1 op_one_wr \op, 4, a1 op_one_wr \op, 5, a1 op_one_wr \op, 6, a1 op_one_wr \op, 7, a1 op_one_wr \op, 8, a1 op_one_wr \op, 9, a1 op_one_wr \op, 10, a1 op_one_wr \op, 11, a1 op_one_wr \op, 12, a1 op_one_wr \op, 13, a1 op_one_wr \op, 14, a1 op_one_wr \op, 15, a1 op_one_wr \op, 16, a1 op_one_wr \op, 17, a1 op_one_wr \op, 18, a1 op_one_wr \op, 19, a1 op_one_wr \op, 20, a1 op_one_wr \op, 21, a1 op_one_wr \op, 22, a1 op_one_wr \op, 23, a1 op_one_wr \op, 24, a1 op_one_wr \op, 25, a1 op_one_wr \op, 26, a1 op_one_wr \op, 27, a1 op_one_wr \op, 28, a1 op_one_wr \op, 29, a1 op_one_wr \op, 30, a1 op_one_wr \op, 31, a1 .set pop END(\name) .endm op_msa_wr read_msa_wr_b, st_b op_msa_wr read_msa_wr_h, st_h op_msa_wr read_msa_wr_w, st_w op_msa_wr read_msa_wr_d, st_d op_msa_wr write_msa_wr_b, ld_b op_msa_wr write_msa_wr_h, ld_h op_msa_wr write_msa_wr_w, ld_w op_msa_wr write_msa_wr_d, ld_d #endif /* CONFIG_CPU_HAS_MSA */ #ifdef CONFIG_CPU_HAS_MSA .macro save_msa_upper wr, off, base .set push .set noat #ifdef CONFIG_64BIT copy_s_d \wr, 1 EX sd $1, \off(\base) #elif defined(CONFIG_CPU_LITTLE_ENDIAN) copy_s_w \wr, 2 EX sw $1, \off(\base) copy_s_w \wr, 3 EX sw $1, (\off+4)(\base) #else /* CONFIG_CPU_BIG_ENDIAN */ copy_s_w \wr, 2 EX sw $1, (\off+4)(\base) copy_s_w \wr, 3 EX sw $1, \off(\base) #endif .set pop .endm LEAF(_save_msa_all_upper) save_msa_upper 0, 0x00, a0 save_msa_upper 1, 0x08, a0 save_msa_upper 2, 0x10, a0 save_msa_upper 3, 0x18, a0 save_msa_upper 4, 0x20, a0 save_msa_upper 5, 0x28, a0 save_msa_upper 6, 0x30, a0 save_msa_upper 7, 0x38, a0 save_msa_upper 8, 0x40, a0 save_msa_upper 9, 0x48, a0 save_msa_upper 10, 0x50, a0 save_msa_upper 11, 0x58, a0 save_msa_upper 12, 0x60, a0 save_msa_upper 13, 0x68, a0 save_msa_upper 14, 0x70, a0 save_msa_upper 15, 0x78, a0 save_msa_upper 16, 0x80, a0 save_msa_upper 17, 0x88, a0 save_msa_upper 18, 0x90, a0 save_msa_upper 19, 0x98, a0 save_msa_upper 20, 0xa0, a0 save_msa_upper 21, 0xa8, a0 save_msa_upper 22, 0xb0, a0 save_msa_upper 23, 0xb8, a0 save_msa_upper 24, 0xc0, a0 save_msa_upper 25, 0xc8, a0 save_msa_upper 26, 0xd0, a0 save_msa_upper 27, 0xd8, a0 save_msa_upper 28, 0xe0, a0 save_msa_upper 29, 0xe8, a0 save_msa_upper 30, 0xf0, a0 save_msa_upper 31, 0xf8, a0 jr ra li v0, 0 END(_save_msa_all_upper) .macro restore_msa_upper wr, off, base .set push .set noat #ifdef CONFIG_64BIT EX ld $1, \off(\base) insert_d \wr, 1 #elif defined(CONFIG_CPU_LITTLE_ENDIAN) EX lw $1, \off(\base) insert_w \wr, 2 EX lw $1, (\off+4)(\base) insert_w \wr, 3 #else /* CONFIG_CPU_BIG_ENDIAN */ EX lw $1, (\off+4)(\base) insert_w \wr, 2 EX lw $1, \off(\base) insert_w \wr, 3 #endif .set pop .endm LEAF(_restore_msa_all_upper) restore_msa_upper 0, 0x00, a0 restore_msa_upper 1, 0x08, a0 restore_msa_upper 2, 0x10, a0 restore_msa_upper 3, 0x18, a0 restore_msa_upper 4, 0x20, a0 restore_msa_upper 5, 0x28, a0 restore_msa_upper 6, 0x30, a0 restore_msa_upper 7, 0x38, a0 restore_msa_upper 8, 0x40, a0 restore_msa_upper 9, 0x48, a0 restore_msa_upper 10, 0x50, a0 restore_msa_upper 11, 0x58, a0 restore_msa_upper 12, 0x60, a0 restore_msa_upper 13, 0x68, a0 restore_msa_upper 14, 0x70, a0 restore_msa_upper 15, 0x78, a0 restore_msa_upper 16, 0x80, a0 restore_msa_upper 17, 0x88, a0 restore_msa_upper 18, 0x90, a0 restore_msa_upper 19, 0x98, a0 restore_msa_upper 20, 0xa0, a0 restore_msa_upper 21, 0xa8, a0 restore_msa_upper 22, 0xb0, a0 restore_msa_upper 23, 0xb8, a0 restore_msa_upper 24, 0xc0, a0 restore_msa_upper 25, 0xc8, a0 restore_msa_upper 26, 0xd0, a0 restore_msa_upper 27, 0xd8, a0 restore_msa_upper 28, 0xe0, a0 restore_msa_upper 29, 0xe8, a0 restore_msa_upper 30, 0xf0, a0 restore_msa_upper 31, 0xf8, a0 jr ra li v0, 0 END(_restore_msa_all_upper) #endif /* CONFIG_CPU_HAS_MSA */ .set reorder .type fault, @function .ent fault fault: li v0, -EFAULT # failure jr ra .end fault |