1 /* RISC-V ISA constants */ 2 3 #define get_field(reg, mask) (((reg) & \ 4 (target_ulong)(mask)) / ((mask) & ~((mask) << 1))) 5 #define set_field(reg, mask, val) (((reg) & ~(target_ulong)(mask)) | \ 6 (((target_ulong)(val) * ((mask) & ~((mask) << 1))) & \ 7 (target_ulong)(mask))) 8 9 /* Floating point round mode */ 10 #define FSR_RD_SHIFT 5 11 #define FSR_RD (0x7 << FSR_RD_SHIFT) 12 13 /* Floating point accrued exception flags */ 14 #define FPEXC_NX 0x01 15 #define FPEXC_UF 0x02 16 #define FPEXC_OF 0x04 17 #define FPEXC_DZ 0x08 18 #define FPEXC_NV 0x10 19 20 /* Floating point status register bits */ 21 #define FSR_AEXC_SHIFT 0 22 #define FSR_NVA (FPEXC_NV << FSR_AEXC_SHIFT) 23 #define FSR_OFA (FPEXC_OF << FSR_AEXC_SHIFT) 24 #define FSR_UFA (FPEXC_UF << FSR_AEXC_SHIFT) 25 #define FSR_DZA (FPEXC_DZ << FSR_AEXC_SHIFT) 26 #define FSR_NXA (FPEXC_NX << FSR_AEXC_SHIFT) 27 #define FSR_AEXC (FSR_NVA | FSR_OFA | FSR_UFA | FSR_DZA | FSR_NXA) 28 29 /* Control and Status Registers */ 30 31 /* User Trap Setup */ 32 #define CSR_USTATUS 0x000 33 #define CSR_UIE 0x004 34 #define CSR_UTVEC 0x005 35 36 /* User Trap Handling */ 37 #define CSR_USCRATCH 0x040 38 #define CSR_UEPC 0x041 39 #define CSR_UCAUSE 0x042 40 #define CSR_UTVAL 0x043 41 #define CSR_UIP 0x044 42 43 /* User Floating-Point CSRs */ 44 #define CSR_FFLAGS 0x001 45 #define CSR_FRM 0x002 46 #define CSR_FCSR 0x003 47 48 /* User Timers and Counters */ 49 #define CSR_CYCLE 0xc00 50 #define CSR_TIME 0xc01 51 #define CSR_INSTRET 0xc02 52 #define CSR_HPMCOUNTER3 0xc03 53 #define CSR_HPMCOUNTER4 0xc04 54 #define CSR_HPMCOUNTER5 0xc05 55 #define CSR_HPMCOUNTER6 0xc06 56 #define CSR_HPMCOUNTER7 0xc07 57 #define CSR_HPMCOUNTER8 0xc08 58 #define CSR_HPMCOUNTER9 0xc09 59 #define CSR_HPMCOUNTER10 0xc0a 60 #define CSR_HPMCOUNTER11 0xc0b 61 #define CSR_HPMCOUNTER12 0xc0c 62 #define CSR_HPMCOUNTER13 0xc0d 63 #define CSR_HPMCOUNTER14 0xc0e 64 #define CSR_HPMCOUNTER15 0xc0f 65 #define CSR_HPMCOUNTER16 0xc10 66 #define CSR_HPMCOUNTER17 0xc11 67 #define CSR_HPMCOUNTER18 0xc12 68 #define CSR_HPMCOUNTER19 0xc13 69 #define CSR_HPMCOUNTER20 0xc14 70 #define CSR_HPMCOUNTER21 0xc15 71 #define CSR_HPMCOUNTER22 0xc16 72 #define CSR_HPMCOUNTER23 0xc17 73 #define CSR_HPMCOUNTER24 0xc18 74 #define CSR_HPMCOUNTER25 0xc19 75 #define CSR_HPMCOUNTER26 0xc1a 76 #define CSR_HPMCOUNTER27 0xc1b 77 #define CSR_HPMCOUNTER28 0xc1c 78 #define CSR_HPMCOUNTER29 0xc1d 79 #define CSR_HPMCOUNTER30 0xc1e 80 #define CSR_HPMCOUNTER31 0xc1f 81 #define CSR_CYCLEH 0xc80 82 #define CSR_TIMEH 0xc81 83 #define CSR_INSTRETH 0xc82 84 #define CSR_HPMCOUNTER3H 0xc83 85 #define CSR_HPMCOUNTER4H 0xc84 86 #define CSR_HPMCOUNTER5H 0xc85 87 #define CSR_HPMCOUNTER6H 0xc86 88 #define CSR_HPMCOUNTER7H 0xc87 89 #define CSR_HPMCOUNTER8H 0xc88 90 #define CSR_HPMCOUNTER9H 0xc89 91 #define CSR_HPMCOUNTER10H 0xc8a 92 #define CSR_HPMCOUNTER11H 0xc8b 93 #define CSR_HPMCOUNTER12H 0xc8c 94 #define CSR_HPMCOUNTER13H 0xc8d 95 #define CSR_HPMCOUNTER14H 0xc8e 96 #define CSR_HPMCOUNTER15H 0xc8f 97 #define CSR_HPMCOUNTER16H 0xc90 98 #define CSR_HPMCOUNTER17H 0xc91 99 #define CSR_HPMCOUNTER18H 0xc92 100 #define CSR_HPMCOUNTER19H 0xc93 101 #define CSR_HPMCOUNTER20H 0xc94 102 #define CSR_HPMCOUNTER21H 0xc95 103 #define CSR_HPMCOUNTER22H 0xc96 104 #define CSR_HPMCOUNTER23H 0xc97 105 #define CSR_HPMCOUNTER24H 0xc98 106 #define CSR_HPMCOUNTER25H 0xc99 107 #define CSR_HPMCOUNTER26H 0xc9a 108 #define CSR_HPMCOUNTER27H 0xc9b 109 #define CSR_HPMCOUNTER28H 0xc9c 110 #define CSR_HPMCOUNTER29H 0xc9d 111 #define CSR_HPMCOUNTER30H 0xc9e 112 #define CSR_HPMCOUNTER31H 0xc9f 113 114 /* Machine Timers and Counters */ 115 #define CSR_MCYCLE 0xb00 116 #define CSR_MINSTRET 0xb02 117 #define CSR_MCYCLEH 0xb80 118 #define CSR_MINSTRETH 0xb82 119 120 /* Machine Information Registers */ 121 #define CSR_MVENDORID 0xf11 122 #define CSR_MARCHID 0xf12 123 #define CSR_MIMPID 0xf13 124 #define CSR_MHARTID 0xf14 125 126 /* Machine Trap Setup */ 127 #define CSR_MSTATUS 0x300 128 #define CSR_MISA 0x301 129 #define CSR_MEDELEG 0x302 130 #define CSR_MIDELEG 0x303 131 #define CSR_MIE 0x304 132 #define CSR_MTVEC 0x305 133 #define CSR_MCOUNTEREN 0x306 134 135 /* Legacy Counter Setup (priv v1.9.1) */ 136 #define CSR_MUCOUNTEREN 0x320 137 #define CSR_MSCOUNTEREN 0x321 138 #define CSR_MHCOUNTEREN 0x322 139 140 /* Machine Trap Handling */ 141 #define CSR_MSCRATCH 0x340 142 #define CSR_MEPC 0x341 143 #define CSR_MCAUSE 0x342 144 #define CSR_MTVAL 0x343 145 #define CSR_MIP 0x344 146 147 /* Legacy Machine Trap Handling (priv v1.9.1) */ 148 #define CSR_MBADADDR 0x343 149 150 /* Supervisor Trap Setup */ 151 #define CSR_SSTATUS 0x100 152 #define CSR_SEDELEG 0x102 153 #define CSR_SIDELEG 0x103 154 #define CSR_SIE 0x104 155 #define CSR_STVEC 0x105 156 #define CSR_SCOUNTEREN 0x106 157 158 /* Supervisor Trap Handling */ 159 #define CSR_SSCRATCH 0x140 160 #define CSR_SEPC 0x141 161 #define CSR_SCAUSE 0x142 162 #define CSR_STVAL 0x143 163 #define CSR_SIP 0x144 164 165 /* Legacy Supervisor Trap Handling (priv v1.9.1) */ 166 #define CSR_SBADADDR 0x143 167 168 /* Supervisor Protection and Translation */ 169 #define CSR_SPTBR 0x180 170 #define CSR_SATP 0x180 171 172 /* Physical Memory Protection */ 173 #define CSR_PMPCFG0 0x3a0 174 #define CSR_PMPCFG1 0x3a1 175 #define CSR_PMPCFG2 0x3a2 176 #define CSR_PMPCFG3 0x3a3 177 #define CSR_PMPADDR0 0x3b0 178 #define CSR_PMPADDR1 0x3b1 179 #define CSR_PMPADDR2 0x3b2 180 #define CSR_PMPADDR3 0x3b3 181 #define CSR_PMPADDR4 0x3b4 182 #define CSR_PMPADDR5 0x3b5 183 #define CSR_PMPADDR6 0x3b6 184 #define CSR_PMPADDR7 0x3b7 185 #define CSR_PMPADDR8 0x3b8 186 #define CSR_PMPADDR9 0x3b9 187 #define CSR_PMPADDR10 0x3ba 188 #define CSR_PMPADDR11 0x3bb 189 #define CSR_PMPADDR12 0x3bc 190 #define CSR_PMPADDR13 0x3bd 191 #define CSR_PMPADDR14 0x3be 192 #define CSR_PMPADDR15 0x3bf 193 194 /* Debug/Trace Registers (shared with Debug Mode) */ 195 #define CSR_TSELECT 0x7a0 196 #define CSR_TDATA1 0x7a1 197 #define CSR_TDATA2 0x7a2 198 #define CSR_TDATA3 0x7a3 199 200 /* Debug Mode Registers */ 201 #define CSR_DCSR 0x7b0 202 #define CSR_DPC 0x7b1 203 #define CSR_DSCRATCH 0x7b2 204 205 /* Performance Counters */ 206 #define CSR_MHPMCOUNTER3 0xb03 207 #define CSR_MHPMCOUNTER4 0xb04 208 #define CSR_MHPMCOUNTER5 0xb05 209 #define CSR_MHPMCOUNTER6 0xb06 210 #define CSR_MHPMCOUNTER7 0xb07 211 #define CSR_MHPMCOUNTER8 0xb08 212 #define CSR_MHPMCOUNTER9 0xb09 213 #define CSR_MHPMCOUNTER10 0xb0a 214 #define CSR_MHPMCOUNTER11 0xb0b 215 #define CSR_MHPMCOUNTER12 0xb0c 216 #define CSR_MHPMCOUNTER13 0xb0d 217 #define CSR_MHPMCOUNTER14 0xb0e 218 #define CSR_MHPMCOUNTER15 0xb0f 219 #define CSR_MHPMCOUNTER16 0xb10 220 #define CSR_MHPMCOUNTER17 0xb11 221 #define CSR_MHPMCOUNTER18 0xb12 222 #define CSR_MHPMCOUNTER19 0xb13 223 #define CSR_MHPMCOUNTER20 0xb14 224 #define CSR_MHPMCOUNTER21 0xb15 225 #define CSR_MHPMCOUNTER22 0xb16 226 #define CSR_MHPMCOUNTER23 0xb17 227 #define CSR_MHPMCOUNTER24 0xb18 228 #define CSR_MHPMCOUNTER25 0xb19 229 #define CSR_MHPMCOUNTER26 0xb1a 230 #define CSR_MHPMCOUNTER27 0xb1b 231 #define CSR_MHPMCOUNTER28 0xb1c 232 #define CSR_MHPMCOUNTER29 0xb1d 233 #define CSR_MHPMCOUNTER30 0xb1e 234 #define CSR_MHPMCOUNTER31 0xb1f 235 #define CSR_MHPMEVENT3 0x323 236 #define CSR_MHPMEVENT4 0x324 237 #define CSR_MHPMEVENT5 0x325 238 #define CSR_MHPMEVENT6 0x326 239 #define CSR_MHPMEVENT7 0x327 240 #define CSR_MHPMEVENT8 0x328 241 #define CSR_MHPMEVENT9 0x329 242 #define CSR_MHPMEVENT10 0x32a 243 #define CSR_MHPMEVENT11 0x32b 244 #define CSR_MHPMEVENT12 0x32c 245 #define CSR_MHPMEVENT13 0x32d 246 #define CSR_MHPMEVENT14 0x32e 247 #define CSR_MHPMEVENT15 0x32f 248 #define CSR_MHPMEVENT16 0x330 249 #define CSR_MHPMEVENT17 0x331 250 #define CSR_MHPMEVENT18 0x332 251 #define CSR_MHPMEVENT19 0x333 252 #define CSR_MHPMEVENT20 0x334 253 #define CSR_MHPMEVENT21 0x335 254 #define CSR_MHPMEVENT22 0x336 255 #define CSR_MHPMEVENT23 0x337 256 #define CSR_MHPMEVENT24 0x338 257 #define CSR_MHPMEVENT25 0x339 258 #define CSR_MHPMEVENT26 0x33a 259 #define CSR_MHPMEVENT27 0x33b 260 #define CSR_MHPMEVENT28 0x33c 261 #define CSR_MHPMEVENT29 0x33d 262 #define CSR_MHPMEVENT30 0x33e 263 #define CSR_MHPMEVENT31 0x33f 264 #define CSR_MHPMCOUNTER3H 0xb83 265 #define CSR_MHPMCOUNTER4H 0xb84 266 #define CSR_MHPMCOUNTER5H 0xb85 267 #define CSR_MHPMCOUNTER6H 0xb86 268 #define CSR_MHPMCOUNTER7H 0xb87 269 #define CSR_MHPMCOUNTER8H 0xb88 270 #define CSR_MHPMCOUNTER9H 0xb89 271 #define CSR_MHPMCOUNTER10H 0xb8a 272 #define CSR_MHPMCOUNTER11H 0xb8b 273 #define CSR_MHPMCOUNTER12H 0xb8c 274 #define CSR_MHPMCOUNTER13H 0xb8d 275 #define CSR_MHPMCOUNTER14H 0xb8e 276 #define CSR_MHPMCOUNTER15H 0xb8f 277 #define CSR_MHPMCOUNTER16H 0xb90 278 #define CSR_MHPMCOUNTER17H 0xb91 279 #define CSR_MHPMCOUNTER18H 0xb92 280 #define CSR_MHPMCOUNTER19H 0xb93 281 #define CSR_MHPMCOUNTER20H 0xb94 282 #define CSR_MHPMCOUNTER21H 0xb95 283 #define CSR_MHPMCOUNTER22H 0xb96 284 #define CSR_MHPMCOUNTER23H 0xb97 285 #define CSR_MHPMCOUNTER24H 0xb98 286 #define CSR_MHPMCOUNTER25H 0xb99 287 #define CSR_MHPMCOUNTER26H 0xb9a 288 #define CSR_MHPMCOUNTER27H 0xb9b 289 #define CSR_MHPMCOUNTER28H 0xb9c 290 #define CSR_MHPMCOUNTER29H 0xb9d 291 #define CSR_MHPMCOUNTER30H 0xb9e 292 #define CSR_MHPMCOUNTER31H 0xb9f 293 294 /* Legacy Hypervisor Trap Setup (priv v1.9.1) */ 295 #define CSR_HSTATUS 0x200 296 #define CSR_HEDELEG 0x202 297 #define CSR_HIDELEG 0x203 298 #define CSR_HIE 0x204 299 #define CSR_HTVEC 0x205 300 301 /* Legacy Hypervisor Trap Handling (priv v1.9.1) */ 302 #define CSR_HSCRATCH 0x240 303 #define CSR_HEPC 0x241 304 #define CSR_HCAUSE 0x242 305 #define CSR_HBADADDR 0x243 306 #define CSR_HIP 0x244 307 308 /* Legacy Machine Protection and Translation (priv v1.9.1) */ 309 #define CSR_MBASE 0x380 310 #define CSR_MBOUND 0x381 311 #define CSR_MIBASE 0x382 312 #define CSR_MIBOUND 0x383 313 #define CSR_MDBASE 0x384 314 #define CSR_MDBOUND 0x385 315 316 /* mstatus CSR bits */ 317 #define MSTATUS_UIE 0x00000001 318 #define MSTATUS_SIE 0x00000002 319 #define MSTATUS_HIE 0x00000004 320 #define MSTATUS_MIE 0x00000008 321 #define MSTATUS_UPIE 0x00000010 322 #define MSTATUS_SPIE 0x00000020 323 #define MSTATUS_HPIE 0x00000040 324 #define MSTATUS_MPIE 0x00000080 325 #define MSTATUS_SPP 0x00000100 326 #define MSTATUS_HPP 0x00000600 327 #define MSTATUS_MPP 0x00001800 328 #define MSTATUS_FS 0x00006000 329 #define MSTATUS_XS 0x00018000 330 #define MSTATUS_MPRV 0x00020000 331 #define MSTATUS_PUM 0x00040000 /* until: priv-1.9.1 */ 332 #define MSTATUS_SUM 0x00040000 /* since: priv-1.10 */ 333 #define MSTATUS_MXR 0x00080000 334 #define MSTATUS_VM 0x1F000000 /* until: priv-1.9.1 */ 335 #define MSTATUS_TVM 0x00100000 /* since: priv-1.10 */ 336 #define MSTATUS_TW 0x20000000 /* since: priv-1.10 */ 337 #define MSTATUS_TSR 0x40000000 /* since: priv-1.10 */ 338 339 #define MSTATUS64_UXL 0x0000000300000000ULL 340 #define MSTATUS64_SXL 0x0000000C00000000ULL 341 342 #define MSTATUS32_SD 0x80000000 343 #define MSTATUS64_SD 0x8000000000000000ULL 344 345 #define MISA32_MXL 0xC0000000 346 #define MISA64_MXL 0xC000000000000000ULL 347 348 #define MXL_RV32 1 349 #define MXL_RV64 2 350 #define MXL_RV128 3 351 352 #if defined(TARGET_RISCV32) 353 #define MSTATUS_SD MSTATUS32_SD 354 #define MISA_MXL MISA32_MXL 355 #define MXL_VAL MXL_RV32 356 #elif defined(TARGET_RISCV64) 357 #define MSTATUS_SD MSTATUS64_SD 358 #define MISA_MXL MISA64_MXL 359 #define MXL_VAL MXL_RV64 360 #endif 361 362 /* sstatus CSR bits */ 363 #define SSTATUS_UIE 0x00000001 364 #define SSTATUS_SIE 0x00000002 365 #define SSTATUS_UPIE 0x00000010 366 #define SSTATUS_SPIE 0x00000020 367 #define SSTATUS_SPP 0x00000100 368 #define SSTATUS_FS 0x00006000 369 #define SSTATUS_XS 0x00018000 370 #define SSTATUS_PUM 0x00040000 /* until: priv-1.9.1 */ 371 #define SSTATUS_SUM 0x00040000 /* since: priv-1.10 */ 372 #define SSTATUS_MXR 0x00080000 373 374 #define SSTATUS32_SD 0x80000000 375 #define SSTATUS64_SD 0x8000000000000000ULL 376 377 #if defined(TARGET_RISCV32) 378 #define SSTATUS_SD SSTATUS32_SD 379 #elif defined(TARGET_RISCV64) 380 #define SSTATUS_SD SSTATUS64_SD 381 #endif 382 383 /* Privilege modes */ 384 #define PRV_U 0 385 #define PRV_S 1 386 #define PRV_H 2 /* Reserved */ 387 #define PRV_M 3 388 389 /* RV32 satp CSR field masks */ 390 #define SATP32_MODE 0x80000000 391 #define SATP32_ASID 0x7fc00000 392 #define SATP32_PPN 0x003fffff 393 394 /* RV64 satp CSR field masks */ 395 #define SATP64_MODE 0xF000000000000000ULL 396 #define SATP64_ASID 0x0FFFF00000000000ULL 397 #define SATP64_PPN 0x00000FFFFFFFFFFFULL 398 399 #if defined(TARGET_RISCV32) 400 #define SATP_MODE SATP32_MODE 401 #define SATP_ASID SATP32_ASID 402 #define SATP_PPN SATP32_PPN 403 #endif 404 #if defined(TARGET_RISCV64) 405 #define SATP_MODE SATP64_MODE 406 #define SATP_ASID SATP64_ASID 407 #define SATP_PPN SATP64_PPN 408 #endif 409 410 /* VM modes (mstatus.vm) privileged ISA 1.9.1 */ 411 #define VM_1_09_MBARE 0 412 #define VM_1_09_MBB 1 413 #define VM_1_09_MBBID 2 414 #define VM_1_09_SV32 8 415 #define VM_1_09_SV39 9 416 #define VM_1_09_SV48 10 417 418 /* VM modes (satp.mode) privileged ISA 1.10 */ 419 #define VM_1_10_MBARE 0 420 #define VM_1_10_SV32 1 421 #define VM_1_10_SV39 8 422 #define VM_1_10_SV48 9 423 #define VM_1_10_SV57 10 424 #define VM_1_10_SV64 11 425 426 /* Page table entry (PTE) fields */ 427 #define PTE_V 0x001 /* Valid */ 428 #define PTE_R 0x002 /* Read */ 429 #define PTE_W 0x004 /* Write */ 430 #define PTE_X 0x008 /* Execute */ 431 #define PTE_U 0x010 /* User */ 432 #define PTE_G 0x020 /* Global */ 433 #define PTE_A 0x040 /* Accessed */ 434 #define PTE_D 0x080 /* Dirty */ 435 #define PTE_SOFT 0x300 /* Reserved for Software */ 436 437 /* Page table PPN shift amount */ 438 #define PTE_PPN_SHIFT 10 439 440 /* Leaf page shift amount */ 441 #define PGSHIFT 12 442 443 /* Default Reset Vector adress */ 444 #define DEFAULT_RSTVEC 0x1000 445 446 /* Exception causes */ 447 #define EXCP_NONE -1 /* sentinel value */ 448 #define RISCV_EXCP_INST_ADDR_MIS 0x0 449 #define RISCV_EXCP_INST_ACCESS_FAULT 0x1 450 #define RISCV_EXCP_ILLEGAL_INST 0x2 451 #define RISCV_EXCP_BREAKPOINT 0x3 452 #define RISCV_EXCP_LOAD_ADDR_MIS 0x4 453 #define RISCV_EXCP_LOAD_ACCESS_FAULT 0x5 454 #define RISCV_EXCP_STORE_AMO_ADDR_MIS 0x6 455 #define RISCV_EXCP_STORE_AMO_ACCESS_FAULT 0x7 456 #define RISCV_EXCP_U_ECALL 0x8 457 #define RISCV_EXCP_S_ECALL 0x9 458 #define RISCV_EXCP_H_ECALL 0xa 459 #define RISCV_EXCP_M_ECALL 0xb 460 #define RISCV_EXCP_INST_PAGE_FAULT 0xc /* since: priv-1.10.0 */ 461 #define RISCV_EXCP_LOAD_PAGE_FAULT 0xd /* since: priv-1.10.0 */ 462 #define RISCV_EXCP_STORE_PAGE_FAULT 0xf /* since: priv-1.10.0 */ 463 464 #define RISCV_EXCP_INT_FLAG 0x80000000 465 #define RISCV_EXCP_INT_MASK 0x7fffffff 466 467 /* Interrupt causes */ 468 #define IRQ_U_SOFT 0 469 #define IRQ_S_SOFT 1 470 #define IRQ_H_SOFT 2 /* reserved */ 471 #define IRQ_M_SOFT 3 472 #define IRQ_U_TIMER 4 473 #define IRQ_S_TIMER 5 474 #define IRQ_H_TIMER 6 /* reserved */ 475 #define IRQ_M_TIMER 7 476 #define IRQ_U_EXT 8 477 #define IRQ_S_EXT 9 478 #define IRQ_H_EXT 10 /* reserved */ 479 #define IRQ_M_EXT 11 480 481 /* mip masks */ 482 #define MIP_USIP (1 << IRQ_U_SOFT) 483 #define MIP_SSIP (1 << IRQ_S_SOFT) 484 #define MIP_HSIP (1 << IRQ_H_SOFT) 485 #define MIP_MSIP (1 << IRQ_M_SOFT) 486 #define MIP_UTIP (1 << IRQ_U_TIMER) 487 #define MIP_STIP (1 << IRQ_S_TIMER) 488 #define MIP_HTIP (1 << IRQ_H_TIMER) 489 #define MIP_MTIP (1 << IRQ_M_TIMER) 490 #define MIP_UEIP (1 << IRQ_U_EXT) 491 #define MIP_SEIP (1 << IRQ_S_EXT) 492 #define MIP_HEIP (1 << IRQ_H_EXT) 493 #define MIP_MEIP (1 << IRQ_M_EXT) 494 495 /* sip masks */ 496 #define SIP_SSIP MIP_SSIP 497 #define SIP_STIP MIP_STIP 498 #define SIP_SEIP MIP_SEIP 499