| ... | @@ -0,0 +1,4220 @@ |
| 1 | // TODO get rid of _GNU_SOURCE |
| 2 | #define _GNU_SOURCE |
| 3 | #include <assert.h> |
| 4 | #include <errno.h> |
| 5 | #include <limits.h> |
| 6 | #include <math.h> |
| 7 | #include <stdbool.h> |
| 8 | #include <stdint.h> |
| 9 | #include <stdio.h> |
| 10 | #include <stdlib.h> |
| 11 | #include <string.h> |
| 12 | |
| 13 | #include <sys/mman.h> |
| 14 | #include <sys/stat.h> |
| 15 | #include <fcntl.h> |
| 16 | #include <unistd.h> |
| 17 | |
| 18 | enum wasi_errno_t { |
| 19 | WASI_ESUCCESS = 0, |
| 20 | WASI_E2BIG = 1, |
| 21 | WASI_EACCES = 2, |
| 22 | WASI_EADDRINUSE = 3, |
| 23 | WASI_EADDRNOTAVAIL = 4, |
| 24 | WASI_EAFNOSUPPORT = 5, |
| 25 | WASI_EAGAIN = 6, |
| 26 | WASI_EALREADY = 7, |
| 27 | WASI_EBADF = 8, |
| 28 | WASI_EBADMSG = 9, |
| 29 | WASI_EBUSY = 10, |
| 30 | WASI_ECANCELED = 11, |
| 31 | WASI_ECHILD = 12, |
| 32 | WASI_ECONNABORTED = 13, |
| 33 | WASI_ECONNREFUSED = 14, |
| 34 | WASI_ECONNRESET = 15, |
| 35 | WASI_EDEADLK = 16, |
| 36 | WASI_EDESTADDRREQ = 17, |
| 37 | WASI_EDOM = 18, |
| 38 | WASI_EDQUOT = 19, |
| 39 | WASI_EEXIST = 20, |
| 40 | WASI_EFAULT = 21, |
| 41 | WASI_EFBIG = 22, |
| 42 | WASI_EHOSTUNREACH = 23, |
| 43 | WASI_EIDRM = 24, |
| 44 | WASI_EILSEQ = 25, |
| 45 | WASI_EINPROGRESS = 26, |
| 46 | WASI_EINTR = 27, |
| 47 | WASI_EINVAL = 28, |
| 48 | WASI_EIO = 29, |
| 49 | WASI_EISCONN = 30, |
| 50 | WASI_EISDIR = 31, |
| 51 | WASI_ELOOP = 32, |
| 52 | WASI_EMFILE = 33, |
| 53 | WASI_EMLINK = 34, |
| 54 | WASI_EMSGSIZE = 35, |
| 55 | WASI_EMULTIHOP = 36, |
| 56 | WASI_ENAMETOOLONG = 37, |
| 57 | WASI_ENETDOWN = 38, |
| 58 | WASI_ENETRESET = 39, |
| 59 | WASI_ENETUNREACH = 40, |
| 60 | WASI_ENFILE = 41, |
| 61 | WASI_ENOBUFS = 42, |
| 62 | WASI_ENODEV = 43, |
| 63 | WASI_ENOENT = 44, |
| 64 | WASI_ENOEXEC = 45, |
| 65 | WASI_ENOLCK = 46, |
| 66 | WASI_ENOLINK = 47, |
| 67 | WASI_ENOMEM = 48, |
| 68 | WASI_ENOMSG = 49, |
| 69 | WASI_ENOPROTOOPT = 50, |
| 70 | WASI_ENOSPC = 51, |
| 71 | WASI_ENOSYS = 52, |
| 72 | WASI_ENOTCONN = 53, |
| 73 | WASI_ENOTDIR = 54, |
| 74 | WASI_ENOTEMPTY = 55, |
| 75 | WASI_ENOTRECOVERABLE = 56, |
| 76 | WASI_ENOTSOCK = 57, |
| 77 | WASI_EOPNOTSUPP = 58, |
| 78 | WASI_ENOTTY = 59, |
| 79 | WASI_ENXIO = 60, |
| 80 | WASI_EOVERFLOW = 61, |
| 81 | WASI_EOWNERDEAD = 62, |
| 82 | WASI_EPERM = 63, |
| 83 | WASI_EPIPE = 64, |
| 84 | WASI_EPROTO = 65, |
| 85 | WASI_EPROTONOSUPPORT = 66, |
| 86 | WASI_EPROTOTYPE = 67, |
| 87 | WASI_ERANGE = 68, |
| 88 | WASI_EROFS = 69, |
| 89 | WASI_ESPIPE = 70, |
| 90 | WASI_ESRCH = 71, |
| 91 | WASI_ESTALE = 72, |
| 92 | WASI_ETIMEDOUT = 73, |
| 93 | WASI_ETXTBSY = 74, |
| 94 | WASI_EXDEV = 75, |
| 95 | WASI_ENOTCAPABLE = 76, |
| 96 | }; |
| 97 | |
| 98 | static void panic(const char *msg) { |
| 99 | fprintf(stderr, "%s\n", msg); |
| 100 | abort(); |
| 101 | } |
| 102 | |
| 103 | static uint32_t min_u32(uint32_t a, uint32_t b) { |
| 104 | return (a < b) ? a : b; |
| 105 | } |
| 106 | |
| 107 | static uint32_t rotl32(uint32_t n, unsigned c) { |
| 108 | const unsigned mask = CHAR_BIT * sizeof(n) - 1; |
| 109 | c &= mask & 31; |
| 110 | return (n << c) | (n >> ((-c) & mask)); |
| 111 | } |
| 112 | |
| 113 | static uint32_t rotr32(uint32_t n, unsigned c) { |
| 114 | const unsigned mask = CHAR_BIT * sizeof(n) - 1; |
| 115 | c &= mask & 31; |
| 116 | return (n >> c) | (n << ((-c) & mask)); |
| 117 | } |
| 118 | |
| 119 | static uint64_t rotl64(uint64_t n, unsigned c) { |
| 120 | const unsigned mask = CHAR_BIT * sizeof(n) - 1; |
| 121 | c &= mask & 63; |
| 122 | return (n << c) | (n >> ((-c) & mask)); |
| 123 | } |
| 124 | |
| 125 | static uint64_t rotr64(uint64_t n, unsigned c) { |
| 126 | const unsigned mask = CHAR_BIT * sizeof(n) - 1; |
| 127 | c &= mask & 63; |
| 128 | return (n >> c) | (n << ((-c) & mask)); |
| 129 | } |
| 130 | |
| 131 | static void *arena_alloc(size_t n) { |
| 132 | void *ptr = malloc(n); |
| 133 | if (!ptr) panic("out of memory"); |
| 134 | return ptr; |
| 135 | } |
| 136 | |
| 137 | static void *arena_realloc(void *ptr, size_t new_n) { |
| 138 | void *new_ptr = realloc(ptr, new_n); |
| 139 | if (!new_ptr) panic("out of memory"); |
| 140 | return new_ptr; |
| 141 | } |
| 142 | |
| 143 | static int err_wrap(const char *prefix, int rc) { |
| 144 | if (rc == -1) { |
| 145 | perror(prefix); |
| 146 | abort(); |
| 147 | } |
| 148 | return rc; |
| 149 | } |
| 150 | |
| 151 | static bool bs_isSet(const uint32_t *bitset, uint32_t index) { |
| 152 | return (bitset[index >> 5] >> (index & 0x1f)) & 1; |
| 153 | } |
| 154 | static void bs_set(uint32_t *bitset, uint32_t index) { |
| 155 | bitset[index >> 5] |= ((uint32_t)1 << (index & 0x1f)); |
| 156 | } |
| 157 | static void bs_unset(uint32_t *bitset, uint32_t index) { |
| 158 | bitset[index >> 5] &= ~((uint32_t)1 << (index & 0x1f)); |
| 159 | } |
| 160 | static void bs_setValue(uint32_t *bitset, uint32_t index, bool value) { |
| 161 | if (value) bs_set(bitset, index); else bs_unset(bitset, index); |
| 162 | } |
| 163 | |
| 164 | struct ByteSlice { |
| 165 | char *ptr; |
| 166 | size_t len; |
| 167 | }; |
| 168 | |
| 169 | static struct ByteSlice read_file_alloc(const char *file_path) { |
| 170 | FILE *f = fopen(file_path, "rb"); |
| 171 | if (!f) { |
| 172 | fprintf(stderr, "failed to read %s: ", file_path); |
| 173 | perror(""); |
| 174 | abort(); |
| 175 | } |
| 176 | if (fseek(f, 0L, SEEK_END) == -1) panic("failed to seek"); |
| 177 | struct ByteSlice res; |
| 178 | res.len = ftell(f); |
| 179 | res.ptr = malloc(res.len); |
| 180 | rewind(f); |
| 181 | size_t amt_read = fread(res.ptr, 1, res.len, f); |
| 182 | if (amt_read != res.len) panic("short read"); |
| 183 | fclose(f); |
| 184 | return res; |
| 185 | } |
| 186 | |
| 187 | |
| 188 | struct Preopen { |
| 189 | int wasi_fd; |
| 190 | int host_fd; |
| 191 | const char *name; |
| 192 | size_t name_len; |
| 193 | }; |
| 194 | |
| 195 | static struct Preopen preopens_buffer[10]; |
| 196 | static size_t preopens_len = 0; |
| 197 | |
| 198 | static void add_preopen(int wasi_fd, const char *name, int host_fd) { |
| 199 | preopens_buffer[preopens_len].wasi_fd = wasi_fd; |
| 200 | preopens_buffer[preopens_len].host_fd = host_fd; |
| 201 | preopens_buffer[preopens_len].name = name; |
| 202 | preopens_buffer[preopens_len].name_len = strlen(name); |
| 203 | preopens_len += 1; |
| 204 | } |
| 205 | |
| 206 | static const struct Preopen *find_preopen(int32_t wasi_fd) { |
| 207 | for (size_t i = 0; i < preopens_len; i += 1) { |
| 208 | const struct Preopen *preopen = &preopens_buffer[i]; |
| 209 | if (preopen->wasi_fd == wasi_fd) { |
| 210 | return preopen; |
| 211 | } |
| 212 | } |
| 213 | return NULL; |
| 214 | } |
| 215 | |
| 216 | static const size_t max_memory = 2ul * 1024ul * 1024ul * 1024ul; // 2 GiB |
| 217 | |
| 218 | static uint16_t read_u16_le(const char *ptr) { |
| 219 | const uint8_t *u8_ptr = (const uint8_t *)ptr; |
| 220 | return |
| 221 | (((uint64_t)u8_ptr[0]) << 0x00) | |
| 222 | (((uint64_t)u8_ptr[1]) << 0x08); |
| 223 | } |
| 224 | |
| 225 | static int16_t read_i16_le(const char *ptr) { |
| 226 | return read_u16_le(ptr); |
| 227 | } |
| 228 | |
| 229 | static uint32_t read_u32_le(const char *ptr) { |
| 230 | const uint8_t *u8_ptr = (const uint8_t *)ptr; |
| 231 | return |
| 232 | (((uint64_t)u8_ptr[0]) << 0x00) | |
| 233 | (((uint64_t)u8_ptr[1]) << 0x08) | |
| 234 | (((uint64_t)u8_ptr[2]) << 0x10) | |
| 235 | (((uint64_t)u8_ptr[3]) << 0x18); |
| 236 | } |
| 237 | |
| 238 | static uint32_t read_i32_le(const char *ptr) { |
| 239 | return read_u32_le(ptr); |
| 240 | } |
| 241 | |
| 242 | static uint64_t read_u64_le(const char *ptr) { |
| 243 | const uint8_t *u8_ptr = (const uint8_t *)ptr; |
| 244 | return |
| 245 | (((uint64_t)u8_ptr[0]) << 0x00) | |
| 246 | (((uint64_t)u8_ptr[1]) << 0x08) | |
| 247 | (((uint64_t)u8_ptr[2]) << 0x10) | |
| 248 | (((uint64_t)u8_ptr[3]) << 0x18) | |
| 249 | (((uint64_t)u8_ptr[4]) << 0x20) | |
| 250 | (((uint64_t)u8_ptr[5]) << 0x28) | |
| 251 | (((uint64_t)u8_ptr[6]) << 0x30) | |
| 252 | (((uint64_t)u8_ptr[7]) << 0x38); |
| 253 | } |
| 254 | |
| 255 | static void write_u16_le(char *ptr, uint16_t x) { |
| 256 | uint8_t *u8_ptr = (uint8_t*)ptr; |
| 257 | u8_ptr[0] = (x >> 0x00); |
| 258 | u8_ptr[1] = (x >> 0x08); |
| 259 | } |
| 260 | |
| 261 | static void write_u32_le(char *ptr, uint32_t x) { |
| 262 | uint8_t *u8_ptr = (uint8_t*)ptr; |
| 263 | u8_ptr[0] = (x >> 0x00); |
| 264 | u8_ptr[1] = (x >> 0x08); |
| 265 | u8_ptr[2] = (x >> 0x10); |
| 266 | u8_ptr[3] = (x >> 0x18); |
| 267 | } |
| 268 | |
| 269 | static void write_u64_le(char *ptr, uint64_t x) { |
| 270 | uint8_t *u8_ptr = (uint8_t*)ptr; |
| 271 | u8_ptr[0] = (x >> 0x00); |
| 272 | u8_ptr[1] = (x >> 0x08); |
| 273 | u8_ptr[2] = (x >> 0x10); |
| 274 | u8_ptr[3] = (x >> 0x18); |
| 275 | u8_ptr[4] = (x >> 0x20); |
| 276 | u8_ptr[5] = (x >> 0x28); |
| 277 | u8_ptr[6] = (x >> 0x30); |
| 278 | u8_ptr[7] = (x >> 0x38); |
| 279 | } |
| 280 | |
| 281 | static uint32_t read32_uleb128(const char *ptr, uint32_t *i) { |
| 282 | uint32_t result = 0; |
| 283 | uint32_t shift = 0; |
| 284 | |
| 285 | for (;;) { |
| 286 | uint32_t byte = ptr[*i]; |
| 287 | *i += 1; |
| 288 | result |= ((byte & 0x7f) << shift); |
| 289 | shift += 7; |
| 290 | if ((byte & 0x80) == 0) return result; |
| 291 | if (shift >= 32) panic("read32_uleb128 failed"); |
| 292 | } |
| 293 | } |
| 294 | |
| 295 | static int64_t read64_ileb128(const char *ptr, uint32_t *i) { |
| 296 | int64_t result = 0; |
| 297 | uint32_t shift = 0; |
| 298 | |
| 299 | for (;;) { |
| 300 | uint64_t byte = ptr[*i]; |
| 301 | *i += 1; |
| 302 | result |= ((byte & 0x7f) << shift); |
| 303 | shift += 7; |
| 304 | if ((byte & 0x80) == 0) { |
| 305 | if ((byte & 0x40) && (shift < 64)) { |
| 306 | uint64_t extend = 0; |
| 307 | result |= (~extend << shift); |
| 308 | } |
| 309 | return result; |
| 310 | } |
| 311 | if (shift >= 64) panic("read64_ileb128 failed"); |
| 312 | } |
| 313 | } |
| 314 | |
| 315 | static int32_t read32_ileb128(const char *ptr, uint32_t *i) { |
| 316 | return read64_ileb128(ptr, i); |
| 317 | } |
| 318 | |
| 319 | static struct ByteSlice read_name(char *ptr, uint32_t *i) { |
| 320 | uint32_t len = read32_uleb128(ptr, i); |
| 321 | struct ByteSlice res; |
| 322 | res.ptr = ptr + *i; |
| 323 | res.len = len; |
| 324 | *i += len; |
| 325 | return res; |
| 326 | } |
| 327 | |
| 328 | enum Section { |
| 329 | Section_custom, |
| 330 | Section_type, |
| 331 | Section_import, |
| 332 | Section_function, |
| 333 | Section_table, |
| 334 | Section_memory, |
| 335 | Section_global, |
| 336 | Section_export, |
| 337 | Section_start, |
| 338 | Section_element, |
| 339 | Section_code, |
| 340 | Section_data, |
| 341 | Section_data_count, |
| 342 | }; |
| 343 | |
| 344 | enum Op { |
| 345 | Op_unreachable, |
| 346 | Op_br_void, |
| 347 | Op_br_32, |
| 348 | Op_br_64, |
| 349 | Op_br_if_nez_void, |
| 350 | Op_br_if_nez_32, |
| 351 | Op_br_if_nez_64, |
| 352 | Op_br_if_eqz_void, |
| 353 | Op_br_if_eqz_32, |
| 354 | Op_br_if_eqz_64, |
| 355 | Op_br_table_void, |
| 356 | Op_br_table_32, |
| 357 | Op_br_table_64, |
| 358 | Op_return_void, |
| 359 | Op_return_32, |
| 360 | Op_return_64, |
| 361 | Op_call, |
| 362 | Op_drop_32, |
| 363 | Op_drop_64, |
| 364 | Op_select_32, |
| 365 | Op_select_64, |
| 366 | Op_local_get_32, |
| 367 | Op_local_get_64, |
| 368 | Op_local_set_32, |
| 369 | Op_local_set_64, |
| 370 | Op_local_tee_32, |
| 371 | Op_local_tee_64, |
| 372 | Op_global_get_0_32, |
| 373 | Op_global_get_32, |
| 374 | Op_global_set_0_32, |
| 375 | Op_global_set_32, |
| 376 | Op_const_32, |
| 377 | Op_const_64, |
| 378 | Op_add_32, |
| 379 | Op_and_32, |
| 380 | Op_wasm, |
| 381 | Op_wasm_prefixed, |
| 382 | }; |
| 383 | |
| 384 | enum WasmOp { |
| 385 | WasmOp_unreachable = 0x00, |
| 386 | WasmOp_nop = 0x01, |
| 387 | WasmOp_block = 0x02, |
| 388 | WasmOp_loop = 0x03, |
| 389 | WasmOp_if = 0x04, |
| 390 | WasmOp_else = 0x05, |
| 391 | WasmOp_end = 0x0B, |
| 392 | WasmOp_br = 0x0C, |
| 393 | WasmOp_br_if = 0x0D, |
| 394 | WasmOp_br_table = 0x0E, |
| 395 | WasmOp_return = 0x0F, |
| 396 | WasmOp_call = 0x10, |
| 397 | WasmOp_call_indirect = 0x11, |
| 398 | WasmOp_drop = 0x1A, |
| 399 | WasmOp_select = 0x1B, |
| 400 | WasmOp_local_get = 0x20, |
| 401 | WasmOp_local_set = 0x21, |
| 402 | WasmOp_local_tee = 0x22, |
| 403 | WasmOp_global_get = 0x23, |
| 404 | WasmOp_global_set = 0x24, |
| 405 | WasmOp_i32_load = 0x28, |
| 406 | WasmOp_i64_load = 0x29, |
| 407 | WasmOp_f32_load = 0x2A, |
| 408 | WasmOp_f64_load = 0x2B, |
| 409 | WasmOp_i32_load8_s = 0x2C, |
| 410 | WasmOp_i32_load8_u = 0x2D, |
| 411 | WasmOp_i32_load16_s = 0x2E, |
| 412 | WasmOp_i32_load16_u = 0x2F, |
| 413 | WasmOp_i64_load8_s = 0x30, |
| 414 | WasmOp_i64_load8_u = 0x31, |
| 415 | WasmOp_i64_load16_s = 0x32, |
| 416 | WasmOp_i64_load16_u = 0x33, |
| 417 | WasmOp_i64_load32_s = 0x34, |
| 418 | WasmOp_i64_load32_u = 0x35, |
| 419 | WasmOp_i32_store = 0x36, |
| 420 | WasmOp_i64_store = 0x37, |
| 421 | WasmOp_f32_store = 0x38, |
| 422 | WasmOp_f64_store = 0x39, |
| 423 | WasmOp_i32_store8 = 0x3A, |
| 424 | WasmOp_i32_store16 = 0x3B, |
| 425 | WasmOp_i64_store8 = 0x3C, |
| 426 | WasmOp_i64_store16 = 0x3D, |
| 427 | WasmOp_i64_store32 = 0x3E, |
| 428 | WasmOp_memory_size = 0x3F, |
| 429 | WasmOp_memory_grow = 0x40, |
| 430 | WasmOp_i32_const = 0x41, |
| 431 | WasmOp_i64_const = 0x42, |
| 432 | WasmOp_f32_const = 0x43, |
| 433 | WasmOp_f64_const = 0x44, |
| 434 | WasmOp_i32_eqz = 0x45, |
| 435 | WasmOp_i32_eq = 0x46, |
| 436 | WasmOp_i32_ne = 0x47, |
| 437 | WasmOp_i32_lt_s = 0x48, |
| 438 | WasmOp_i32_lt_u = 0x49, |
| 439 | WasmOp_i32_gt_s = 0x4A, |
| 440 | WasmOp_i32_gt_u = 0x4B, |
| 441 | WasmOp_i32_le_s = 0x4C, |
| 442 | WasmOp_i32_le_u = 0x4D, |
| 443 | WasmOp_i32_ge_s = 0x4E, |
| 444 | WasmOp_i32_ge_u = 0x4F, |
| 445 | WasmOp_i64_eqz = 0x50, |
| 446 | WasmOp_i64_eq = 0x51, |
| 447 | WasmOp_i64_ne = 0x52, |
| 448 | WasmOp_i64_lt_s = 0x53, |
| 449 | WasmOp_i64_lt_u = 0x54, |
| 450 | WasmOp_i64_gt_s = 0x55, |
| 451 | WasmOp_i64_gt_u = 0x56, |
| 452 | WasmOp_i64_le_s = 0x57, |
| 453 | WasmOp_i64_le_u = 0x58, |
| 454 | WasmOp_i64_ge_s = 0x59, |
| 455 | WasmOp_i64_ge_u = 0x5A, |
| 456 | WasmOp_f32_eq = 0x5B, |
| 457 | WasmOp_f32_ne = 0x5C, |
| 458 | WasmOp_f32_lt = 0x5D, |
| 459 | WasmOp_f32_gt = 0x5E, |
| 460 | WasmOp_f32_le = 0x5F, |
| 461 | WasmOp_f32_ge = 0x60, |
| 462 | WasmOp_f64_eq = 0x61, |
| 463 | WasmOp_f64_ne = 0x62, |
| 464 | WasmOp_f64_lt = 0x63, |
| 465 | WasmOp_f64_gt = 0x64, |
| 466 | WasmOp_f64_le = 0x65, |
| 467 | WasmOp_f64_ge = 0x66, |
| 468 | WasmOp_i32_clz = 0x67, |
| 469 | WasmOp_i32_ctz = 0x68, |
| 470 | WasmOp_i32_popcnt = 0x69, |
| 471 | WasmOp_i32_add = 0x6A, |
| 472 | WasmOp_i32_sub = 0x6B, |
| 473 | WasmOp_i32_mul = 0x6C, |
| 474 | WasmOp_i32_div_s = 0x6D, |
| 475 | WasmOp_i32_div_u = 0x6E, |
| 476 | WasmOp_i32_rem_s = 0x6F, |
| 477 | WasmOp_i32_rem_u = 0x70, |
| 478 | WasmOp_i32_and = 0x71, |
| 479 | WasmOp_i32_or = 0x72, |
| 480 | WasmOp_i32_xor = 0x73, |
| 481 | WasmOp_i32_shl = 0x74, |
| 482 | WasmOp_i32_shr_s = 0x75, |
| 483 | WasmOp_i32_shr_u = 0x76, |
| 484 | WasmOp_i32_rotl = 0x77, |
| 485 | WasmOp_i32_rotr = 0x78, |
| 486 | WasmOp_i64_clz = 0x79, |
| 487 | WasmOp_i64_ctz = 0x7A, |
| 488 | WasmOp_i64_popcnt = 0x7B, |
| 489 | WasmOp_i64_add = 0x7C, |
| 490 | WasmOp_i64_sub = 0x7D, |
| 491 | WasmOp_i64_mul = 0x7E, |
| 492 | WasmOp_i64_div_s = 0x7F, |
| 493 | WasmOp_i64_div_u = 0x80, |
| 494 | WasmOp_i64_rem_s = 0x81, |
| 495 | WasmOp_i64_rem_u = 0x82, |
| 496 | WasmOp_i64_and = 0x83, |
| 497 | WasmOp_i64_or = 0x84, |
| 498 | WasmOp_i64_xor = 0x85, |
| 499 | WasmOp_i64_shl = 0x86, |
| 500 | WasmOp_i64_shr_s = 0x87, |
| 501 | WasmOp_i64_shr_u = 0x88, |
| 502 | WasmOp_i64_rotl = 0x89, |
| 503 | WasmOp_i64_rotr = 0x8A, |
| 504 | WasmOp_f32_abs = 0x8B, |
| 505 | WasmOp_f32_neg = 0x8C, |
| 506 | WasmOp_f32_ceil = 0x8D, |
| 507 | WasmOp_f32_floor = 0x8E, |
| 508 | WasmOp_f32_trunc = 0x8F, |
| 509 | WasmOp_f32_nearest = 0x90, |
| 510 | WasmOp_f32_sqrt = 0x91, |
| 511 | WasmOp_f32_add = 0x92, |
| 512 | WasmOp_f32_sub = 0x93, |
| 513 | WasmOp_f32_mul = 0x94, |
| 514 | WasmOp_f32_div = 0x95, |
| 515 | WasmOp_f32_min = 0x96, |
| 516 | WasmOp_f32_max = 0x97, |
| 517 | WasmOp_f32_copysign = 0x98, |
| 518 | WasmOp_f64_abs = 0x99, |
| 519 | WasmOp_f64_neg = 0x9A, |
| 520 | WasmOp_f64_ceil = 0x9B, |
| 521 | WasmOp_f64_floor = 0x9C, |
| 522 | WasmOp_f64_trunc = 0x9D, |
| 523 | WasmOp_f64_nearest = 0x9E, |
| 524 | WasmOp_f64_sqrt = 0x9F, |
| 525 | WasmOp_f64_add = 0xA0, |
| 526 | WasmOp_f64_sub = 0xA1, |
| 527 | WasmOp_f64_mul = 0xA2, |
| 528 | WasmOp_f64_div = 0xA3, |
| 529 | WasmOp_f64_min = 0xA4, |
| 530 | WasmOp_f64_max = 0xA5, |
| 531 | WasmOp_f64_copysign = 0xA6, |
| 532 | WasmOp_i32_wrap_i64 = 0xA7, |
| 533 | WasmOp_i32_trunc_f32_s = 0xA8, |
| 534 | WasmOp_i32_trunc_f32_u = 0xA9, |
| 535 | WasmOp_i32_trunc_f64_s = 0xAA, |
| 536 | WasmOp_i32_trunc_f64_u = 0xAB, |
| 537 | WasmOp_i64_extend_i32_s = 0xAC, |
| 538 | WasmOp_i64_extend_i32_u = 0xAD, |
| 539 | WasmOp_i64_trunc_f32_s = 0xAE, |
| 540 | WasmOp_i64_trunc_f32_u = 0xAF, |
| 541 | WasmOp_i64_trunc_f64_s = 0xB0, |
| 542 | WasmOp_i64_trunc_f64_u = 0xB1, |
| 543 | WasmOp_f32_convert_i32_s = 0xB2, |
| 544 | WasmOp_f32_convert_i32_u = 0xB3, |
| 545 | WasmOp_f32_convert_i64_s = 0xB4, |
| 546 | WasmOp_f32_convert_i64_u = 0xB5, |
| 547 | WasmOp_f32_demote_f64 = 0xB6, |
| 548 | WasmOp_f64_convert_i32_s = 0xB7, |
| 549 | WasmOp_f64_convert_i32_u = 0xB8, |
| 550 | WasmOp_f64_convert_i64_s = 0xB9, |
| 551 | WasmOp_f64_convert_i64_u = 0xBA, |
| 552 | WasmOp_f64_promote_f32 = 0xBB, |
| 553 | WasmOp_i32_reinterpret_f32 = 0xBC, |
| 554 | WasmOp_i64_reinterpret_f64 = 0xBD, |
| 555 | WasmOp_f32_reinterpret_i32 = 0xBE, |
| 556 | WasmOp_f64_reinterpret_i64 = 0xBF, |
| 557 | WasmOp_i32_extend8_s = 0xC0, |
| 558 | WasmOp_i32_extend16_s = 0xC1, |
| 559 | WasmOp_i64_extend8_s = 0xC2, |
| 560 | WasmOp_i64_extend16_s = 0xC3, |
| 561 | WasmOp_i64_extend32_s = 0xC4, |
| 562 | |
| 563 | WasmOp_prefixed = 0xFC, |
| 564 | }; |
| 565 | |
| 566 | enum WasmPrefixedOp { |
| 567 | WasmPrefixedOp_i32_trunc_sat_f32_s = 0x00, |
| 568 | WasmPrefixedOp_i32_trunc_sat_f32_u = 0x01, |
| 569 | WasmPrefixedOp_i32_trunc_sat_f64_s = 0x02, |
| 570 | WasmPrefixedOp_i32_trunc_sat_f64_u = 0x03, |
| 571 | WasmPrefixedOp_i64_trunc_sat_f32_s = 0x04, |
| 572 | WasmPrefixedOp_i64_trunc_sat_f32_u = 0x05, |
| 573 | WasmPrefixedOp_i64_trunc_sat_f64_s = 0x06, |
| 574 | WasmPrefixedOp_i64_trunc_sat_f64_u = 0x07, |
| 575 | WasmPrefixedOp_memory_init = 0x08, |
| 576 | WasmPrefixedOp_data_drop = 0x09, |
| 577 | WasmPrefixedOp_memory_copy = 0x0A, |
| 578 | WasmPrefixedOp_memory_fill = 0x0B, |
| 579 | WasmPrefixedOp_table_init = 0x0C, |
| 580 | WasmPrefixedOp_elem_drop = 0x0D, |
| 581 | WasmPrefixedOp_table_copy = 0x0E, |
| 582 | WasmPrefixedOp_table_grow = 0x0F, |
| 583 | WasmPrefixedOp_table_size = 0x10, |
| 584 | WasmPrefixedOp_table_fill = 0x11, |
| 585 | }; |
| 586 | |
| 587 | static const uint32_t wasm_page_size = 64 * 1024; |
| 588 | |
| 589 | struct ProgramCounter { |
| 590 | uint32_t opcode; |
| 591 | uint32_t operand; |
| 592 | }; |
| 593 | |
| 594 | struct TypeInfo { |
| 595 | uint32_t param_count; |
| 596 | // bitset with param_count bits, indexed from lsb, 0 -> 32-bit, 1 -> 64-bit |
| 597 | uint32_t param_types; |
| 598 | uint32_t result_count; |
| 599 | // bitset with result_count bits, indexed from lsb, 0 -> 32-bit, 1 -> 64-bit |
| 600 | uint32_t result_types; |
| 601 | }; |
| 602 | |
| 603 | struct Function { |
| 604 | // Index to start of code in opcodes/operands. |
| 605 | struct ProgramCounter entry_pc; |
| 606 | uint32_t type_idx; |
| 607 | uint32_t locals_count; |
| 608 | // multi-word bitset with vm->types[type_idx].param_count + locals_count bits |
| 609 | // indexed from lsb of the first element, 0 -> 32-bit, 1 -> 64-bit |
| 610 | uint32_t *local_types; |
| 611 | }; |
| 612 | |
| 613 | enum ImpMod { |
| 614 | ImpMod_wasi_snapshot_preview1, |
| 615 | }; |
| 616 | |
| 617 | enum ImpName { |
| 618 | ImpName_args_get, |
| 619 | ImpName_args_sizes_get, |
| 620 | ImpName_clock_time_get, |
| 621 | ImpName_debug, |
| 622 | ImpName_debug_slice, |
| 623 | ImpName_environ_get, |
| 624 | ImpName_environ_sizes_get, |
| 625 | ImpName_fd_close, |
| 626 | ImpName_fd_fdstat_get, |
| 627 | ImpName_fd_filestat_get, |
| 628 | ImpName_fd_filestat_set_size, |
| 629 | ImpName_fd_filestat_set_times, |
| 630 | ImpName_fd_pread, |
| 631 | ImpName_fd_prestat_dir_name, |
| 632 | ImpName_fd_prestat_get, |
| 633 | ImpName_fd_pwrite, |
| 634 | ImpName_fd_read, |
| 635 | ImpName_fd_readdir, |
| 636 | ImpName_fd_write, |
| 637 | ImpName_path_create_directory, |
| 638 | ImpName_path_filestat_get, |
| 639 | ImpName_path_open, |
| 640 | ImpName_path_remove_directory, |
| 641 | ImpName_path_rename, |
| 642 | ImpName_path_unlink_file, |
| 643 | ImpName_proc_exit, |
| 644 | ImpName_random_get, |
| 645 | }; |
| 646 | |
| 647 | struct Import { |
| 648 | enum ImpMod mod; |
| 649 | enum ImpName name; |
| 650 | uint32_t type_idx; |
| 651 | }; |
| 652 | |
| 653 | struct VirtualMachine { |
| 654 | uint64_t *stack; |
| 655 | /// Points to one after the last stack item. |
| 656 | uint32_t stack_top; |
| 657 | struct ProgramCounter pc; |
| 658 | uint32_t memory_len; |
| 659 | const char *mod_ptr; |
| 660 | uint8_t *opcodes; |
| 661 | uint32_t *operands; |
| 662 | struct Function *functions; |
| 663 | /// Type index to start of type in module_bytes. |
| 664 | struct TypeInfo *types; |
| 665 | uint64_t *globals; |
| 666 | char *memory; |
| 667 | struct Import *imports; |
| 668 | uint32_t imports_len; |
| 669 | char **args; |
| 670 | uint32_t *table; |
| 671 | }; |
| 672 | |
| 673 | static int to_host_fd(int32_t wasi_fd) { |
| 674 | const struct Preopen *preopen = find_preopen(wasi_fd); |
| 675 | if (!preopen) return wasi_fd; |
| 676 | return preopen->host_fd; |
| 677 | } |
| 678 | |
| 679 | static enum wasi_errno_t to_wasi_err(int err) { |
| 680 | switch (err) { |
| 681 | case EACCES: return WASI_EACCES; |
| 682 | case EDQUOT: return WASI_EDQUOT; |
| 683 | case EIO: return WASI_EIO; |
| 684 | case EFBIG: return WASI_EFBIG; |
| 685 | case ENOSPC: return WASI_ENOSPC; |
| 686 | case EPIPE: return WASI_EPIPE; |
| 687 | case EBADF: return WASI_EBADF; |
| 688 | case ENOMEM: return WASI_ENOMEM; |
| 689 | case ENOENT: return WASI_ENOENT; |
| 690 | case EEXIST: return WASI_EEXIST; |
| 691 | default: |
| 692 | fprintf(stderr, "unexpected errno: %s\n", strerror(err)); |
| 693 | abort(); |
| 694 | }; |
| 695 | } |
| 696 | |
| 697 | /// fn args_sizes_get(argc: *usize, argv_buf_size: *usize) errno_t; |
| 698 | static enum wasi_errno_t wasi_args_sizes_get(struct VirtualMachine *vm, |
| 699 | uint32_t argc, uint32_t argv_buf_size) |
| 700 | { |
| 701 | uint32_t args_len = 0; |
| 702 | size_t buf_size = 0; |
| 703 | while (vm->args[args_len]) { |
| 704 | buf_size += strlen(vm->args[args_len]) + 1; |
| 705 | args_len += 1; |
| 706 | } |
| 707 | write_u32_le(vm->memory + argc, args_len); |
| 708 | write_u32_le(vm->memory + argv_buf_size, buf_size); |
| 709 | return WASI_ESUCCESS; |
| 710 | } |
| 711 | |
| 712 | /// extern fn args_get(argv: [*][*:0]u8, argv_buf: [*]u8) errno_t; |
| 713 | static enum wasi_errno_t wasi_args_get(struct VirtualMachine *vm, |
| 714 | uint32_t argv, uint32_t argv_buf) |
| 715 | { |
| 716 | panic("TODO implement wasi_args_get"); |
| 717 | //var argv_buf_i: usize = 0; |
| 718 | //for (vm->args) |arg, arg_i| { |
| 719 | // // Write the arg to the buffer. |
| 720 | // const argv_ptr = argv_buf + argv_buf_i; |
| 721 | // const arg_len = mem.span(arg).len + 1; |
| 722 | // mem.copy(u8, vm->memory[argv_buf + argv_buf_i ..], arg[0..arg_len]); |
| 723 | // argv_buf_i += arg_len; |
| 724 | |
| 725 | // write_u32_le(vm->memory[argv + 4 * arg_i ..][0..4], @intCast(u32, argv_ptr)); |
| 726 | //} |
| 727 | return WASI_ESUCCESS; |
| 728 | } |
| 729 | |
| 730 | /// extern fn random_get(buf: [*]u8, buf_len: usize) errno_t; |
| 731 | static enum wasi_errno_t wasi_random_get(struct VirtualMachine *vm, |
| 732 | uint32_t buf, uint32_t buf_len) |
| 733 | { |
| 734 | panic("TODO implement wasi_random_get"); |
| 735 | //const host_buf = vm->memory[buf..][0..buf_len]; |
| 736 | //std.crypto.random.bytes(host_buf); |
| 737 | return WASI_ESUCCESS; |
| 738 | } |
| 739 | |
| 740 | /// fn fd_prestat_get(fd: fd_t, buf: *prestat_t) errno_t; |
| 741 | /// const prestat_t = extern struct { |
| 742 | /// pr_type: u8, |
| 743 | /// u: usize, |
| 744 | /// }; |
| 745 | static enum wasi_errno_t wasi_fd_prestat_get(struct VirtualMachine *vm, |
| 746 | int32_t fd, uint32_t buf) |
| 747 | { |
| 748 | panic("TODO implement wasi_fd_prestat_get"); |
| 749 | //const preopen = findPreopen(fd) orelse return .BADF; |
| 750 | //write_u32_le(vm->memory[buf + 0 ..][0..4], 0); |
| 751 | //write_u32_le(vm->memory[buf + 4 ..][0..4], @intCast(u32, preopen.name.len)); |
| 752 | return WASI_ESUCCESS; |
| 753 | } |
| 754 | |
| 755 | /// fn fd_prestat_dir_name(fd: fd_t, path: [*]u8, path_len: usize) errno_t; |
| 756 | static enum wasi_errno_t wasi_fd_prestat_dir_name(struct VirtualMachine *vm, |
| 757 | int32_t fd, uint32_t path, uint32_t path_len) |
| 758 | { |
| 759 | panic("TODO implement wasi_fd_prestat_dir_name"); |
| 760 | //const preopen = findPreopen(fd) orelse return .BADF; |
| 761 | //assert(path_len == preopen.name.len); |
| 762 | //mem.copy(u8, vm->memory[path..], preopen.name); |
| 763 | return WASI_ESUCCESS; |
| 764 | } |
| 765 | |
| 766 | /// extern fn fd_close(fd: fd_t) errno_t; |
| 767 | static enum wasi_errno_t wasi_fd_close(struct VirtualMachine *vm, int32_t fd) { |
| 768 | panic("TODO implement wasi_fd_close"); |
| 769 | //_ = vm; |
| 770 | //const host_fd = toHostFd(fd); |
| 771 | //os.close(host_fd); |
| 772 | return WASI_ESUCCESS; |
| 773 | } |
| 774 | |
| 775 | static enum wasi_errno_t wasi_fd_read( |
| 776 | struct VirtualMachine *vm, |
| 777 | int32_t fd, |
| 778 | uint32_t iovs, // [*]const iovec_t |
| 779 | uint32_t iovs_len, // usize |
| 780 | uint32_t nread // *usize |
| 781 | ) { |
| 782 | panic("TODO implement wasi_fd_read"); |
| 783 | //const host_fd = toHostFd(fd); |
| 784 | //var i: u32 = 0; |
| 785 | //var total_read: usize = 0; |
| 786 | //while (i < iovs_len) : (i += 1) { |
| 787 | // uint32_t ptr = read_u32_le(vm->memory + iovs + i * 8 + 0); |
| 788 | // uint32_t len = read_u32_le(vm->memory + iovs + i * 8 + 4); |
| 789 | // const buf = vm->memory[ptr..][0..len]; |
| 790 | // const read = os.read(host_fd, buf) catch |err| return toWasiError(err); |
| 791 | // trace_log.debug("read {d} bytes out of {d}", .{ read, buf.len }); |
| 792 | // total_read += read; |
| 793 | // if (read != buf.len) break; |
| 794 | //} |
| 795 | //write_u32_le(vm->memory[nread..][0..4], @intCast(u32, total_read)); |
| 796 | return WASI_ESUCCESS; |
| 797 | } |
| 798 | |
| 799 | /// extern fn fd_write(fd: fd_t, iovs: [*]const ciovec_t, iovs_len: usize, nwritten: *usize) errno_t; |
| 800 | /// const ciovec_t = extern struct { |
| 801 | /// base: [*]const u8, |
| 802 | /// len: usize, |
| 803 | /// }; |
| 804 | static enum wasi_errno_t wasi_fd_write(struct VirtualMachine *vm, |
| 805 | int32_t fd, uint32_t iovs, uint32_t iovs_len, uint32_t nwritten) |
| 806 | { |
| 807 | int host_fd = to_host_fd(fd); |
| 808 | size_t total_written = 0; |
| 809 | for (uint32_t i = 0; i < iovs_len; i += 1) { |
| 810 | uint32_t ptr = read_u32_le(vm->memory + iovs + i * 8 + 0); |
| 811 | uint32_t len = read_u32_le(vm->memory + iovs + i * 8 + 4); |
| 812 | ssize_t written = write(host_fd, vm->memory + ptr, len); |
| 813 | if (written < 0) return to_wasi_err(errno); |
| 814 | total_written += written; |
| 815 | if (written != len) break; |
| 816 | } |
| 817 | write_u32_le(vm->memory + nwritten, total_written); |
| 818 | return WASI_ESUCCESS; |
| 819 | } |
| 820 | |
| 821 | static enum wasi_errno_t wasi_fd_pwrite( |
| 822 | struct VirtualMachine *vm, |
| 823 | int32_t fd, |
| 824 | uint32_t iovs, // [*]const ciovec_t |
| 825 | uint32_t iovs_len, // usize |
| 826 | uint64_t offset, // wasi.filesize_t, |
| 827 | uint32_t written_ptr // *usize |
| 828 | ) { |
| 829 | panic("TODO implement wasi_fd_pwrite"); |
| 830 | //const host_fd = toHostFd(fd); |
| 831 | //var i: u32 = 0; |
| 832 | //var written: usize = 0; |
| 833 | //while (i < iovs_len) : (i += 1) { |
| 834 | // uint32_t ptr = read_u32_le(vm->memory + iovs + i * 8 + 0); |
| 835 | // uint32_t len = read_u32_le(vm->memory + iovs + i * 8 + 4); |
| 836 | // const buf = vm->memory[ptr..][0..len]; |
| 837 | // const w = os.pwrite(host_fd, buf, offset + written) catch |err| return toWasiError(err); |
| 838 | // written += w; |
| 839 | // if (w != buf.len) break; |
| 840 | //} |
| 841 | //write_u32_le(vm->memory[written_ptr..][0..4], @intCast(u32, written)); |
| 842 | return WASI_ESUCCESS; |
| 843 | } |
| 844 | |
| 845 | ///extern fn path_open( |
| 846 | /// dirfd: fd_t, |
| 847 | /// dirflags: lookupflags_t, |
| 848 | /// path: [*]const u8, |
| 849 | /// path_len: usize, |
| 850 | /// oflags: oflags_t, |
| 851 | /// fs_rights_base: rights_t, |
| 852 | /// fs_rights_inheriting: rights_t, |
| 853 | /// fs_flags: fdflags_t, |
| 854 | /// fd: *fd_t, |
| 855 | ///) errno_t; |
| 856 | static enum wasi_errno_t wasi_path_open( |
| 857 | struct VirtualMachine *vm, |
| 858 | int32_t dirfd, |
| 859 | uint32_t dirflags, // wasi.lookupflags_t, |
| 860 | uint32_t path, |
| 861 | uint32_t path_len, |
| 862 | uint16_t oflags, // wasi.oflags_t, |
| 863 | uint64_t fs_rights_base, // wasi.rights_t, |
| 864 | uint64_t fs_rights_inheriting, // wasi.rights_t, |
| 865 | uint16_t fs_flags, // wasi.fdflags_t, |
| 866 | uint32_t fd |
| 867 | ) { |
| 868 | panic("TODO implement wasi_path_open"); |
| 869 | //const sub_path = vm->memory[path..][0..path_len]; |
| 870 | //const host_fd = toHostFd(dirfd); |
| 871 | //var flags: u32 = @as(u32, if (oflags & wasi.O.CREAT != 0) os.O.CREAT else 0) | |
| 872 | // @as(u32, if (oflags & wasi.O.DIRECTORY != 0) os.O.DIRECTORY else 0) | |
| 873 | // @as(u32, if (oflags & wasi.O.EXCL != 0) os.O.EXCL else 0) | |
| 874 | // @as(u32, if (oflags & wasi.O.TRUNC != 0) os.O.TRUNC else 0) | |
| 875 | // @as(u32, if (fs_flags & wasi.FDFLAG.APPEND != 0) os.O.APPEND else 0) | |
| 876 | // @as(u32, if (fs_flags & wasi.FDFLAG.DSYNC != 0) os.O.DSYNC else 0) | |
| 877 | // @as(u32, if (fs_flags & wasi.FDFLAG.NONBLOCK != 0) os.O.NONBLOCK else 0) | |
| 878 | // @as(u32, if (fs_flags & wasi.FDFLAG.SYNC != 0) os.O.SYNC else 0); |
| 879 | //if ((fs_rights_base & wasi.RIGHT.FD_READ != 0) and |
| 880 | // (fs_rights_base & wasi.RIGHT.FD_WRITE != 0)) |
| 881 | //{ |
| 882 | // flags |= os.O.RDWR; |
| 883 | //} else if (fs_rights_base & wasi.RIGHT.FD_WRITE != 0) { |
| 884 | // flags |= os.O.WRONLY; |
| 885 | //} else if (fs_rights_base & wasi.RIGHT.FD_READ != 0) { |
| 886 | // flags |= os.O.RDONLY; // no-op because O_RDONLY is 0 |
| 887 | //} |
| 888 | //const mode = 0o644; |
| 889 | //const res_fd = os.openat(host_fd, sub_path, flags, mode) catch |err| return toWasiError(err); |
| 890 | //mem.writeIntLittle(i32, vm->memory[fd..][0..4], res_fd); |
| 891 | return WASI_ESUCCESS; |
| 892 | } |
| 893 | |
| 894 | static enum wasi_errno_t wasi_path_filestat_get( |
| 895 | struct VirtualMachine *vm, |
| 896 | int32_t fd, |
| 897 | uint32_t flags, // wasi.lookupflags_t, |
| 898 | uint32_t path, // [*]const u8 |
| 899 | uint32_t path_len, // usize |
| 900 | uint32_t buf // *filestat_t |
| 901 | ) { |
| 902 | panic("TODO implement wasi_path_filestat_get"); |
| 903 | //const sub_path = vm->memory[path..][0..path_len]; |
| 904 | //const host_fd = toHostFd(fd); |
| 905 | //const dir: fs.Dir = .{ .fd = host_fd }; |
| 906 | //const stat = dir.statFile(sub_path) catch |err| return toWasiError(err); |
| 907 | //return finishWasiStat(vm, buf, stat); |
| 908 | return WASI_ESUCCESS; |
| 909 | } |
| 910 | |
| 911 | /// extern fn path_create_directory(fd: fd_t, path: [*]const u8, path_len: usize) errno_t; |
| 912 | static enum wasi_errno_t wasi_path_create_directory(struct VirtualMachine *vm, int32_t fd, uint32_t path, uint32_t path_len) { |
| 913 | panic("TODO implement wasi_path_create_directory"); |
| 914 | //const sub_path = vm->memory[path..][0..path_len]; |
| 915 | //trace_log.debug("wasi_path_create_directory fd={d} path={s}", .{ fd, sub_path }); |
| 916 | //const host_fd = toHostFd(fd); |
| 917 | //const dir: fs.Dir = .{ .fd = host_fd }; |
| 918 | //dir.makeDir(sub_path) catch |err| return toWasiError(err); |
| 919 | return WASI_ESUCCESS; |
| 920 | } |
| 921 | |
| 922 | static enum wasi_errno_t wasi_path_rename( |
| 923 | struct VirtualMachine *vm, |
| 924 | int32_t old_fd, |
| 925 | uint32_t old_path_ptr, // [*]const u8 |
| 926 | uint32_t old_path_len, // usize |
| 927 | int32_t new_fd, |
| 928 | uint32_t new_path_ptr, // [*]const u8 |
| 929 | uint32_t new_path_len // usize |
| 930 | ) { |
| 931 | panic("TODO implement wasi_path_rename"); |
| 932 | //const old_path = vm->memory[old_path_ptr..][0..old_path_len]; |
| 933 | //const new_path = vm->memory[new_path_ptr..][0..new_path_len]; |
| 934 | //trace_log.debug("wasi_path_rename old_fd={d} old_path={s} new_fd={d} new_path={s}", .{ |
| 935 | // old_fd, old_path, new_fd, new_path, |
| 936 | //}); |
| 937 | //const old_host_fd = toHostFd(old_fd); |
| 938 | //const new_host_fd = toHostFd(new_fd); |
| 939 | //os.renameat(old_host_fd, old_path, new_host_fd, new_path) catch |err| return toWasiError(err); |
| 940 | return WASI_ESUCCESS; |
| 941 | } |
| 942 | |
| 943 | /// extern fn fd_filestat_get(fd: fd_t, buf: *filestat_t) errno_t; |
| 944 | static enum wasi_errno_t wasi_fd_filestat_get(struct VirtualMachine *vm, int32_t fd, uint32_t buf) { |
| 945 | panic("TODO implement wasi_fd_filestat_get"); |
| 946 | //const host_fd = toHostFd(fd); |
| 947 | //const file = fs.File{ .handle = host_fd }; |
| 948 | //const stat = file.stat() catch |err| return toWasiError(err); |
| 949 | //return finishWasiStat(vm, buf, stat); |
| 950 | return WASI_ESUCCESS; |
| 951 | } |
| 952 | |
| 953 | static enum wasi_errno_t wasi_fd_filestat_set_size( struct VirtualMachine *vm, |
| 954 | int32_t fd, uint64_t size) |
| 955 | { |
| 956 | panic("TODO implement wasi_fd_filestat_set_size"); |
| 957 | //_ = vm; |
| 958 | //const host_fd = toHostFd(fd); |
| 959 | //os.ftruncate(host_fd, size) catch |err| return toWasiError(err); |
| 960 | return WASI_ESUCCESS; |
| 961 | } |
| 962 | |
| 963 | /// pub extern "wasi_snapshot_preview1" fn fd_fdstat_get(fd: fd_t, buf: *fdstat_t) errno_t; |
| 964 | /// pub const fdstat_t = extern struct { |
| 965 | /// fs_filetype: filetype_t, u8 |
| 966 | /// fs_flags: fdflags_t, u16 |
| 967 | /// fs_rights_base: rights_t, u64 |
| 968 | /// fs_rights_inheriting: rights_t, u64 |
| 969 | /// }; |
| 970 | static enum wasi_errno_t wasi_fd_fdstat_get(struct VirtualMachine *vm, int32_t fd, uint32_t buf) { |
| 971 | panic("TODO implement wasi_fd_fdstat_get"); |
| 972 | //const host_fd = toHostFd(fd); |
| 973 | //const file = fs.File{ .handle = host_fd }; |
| 974 | //const stat = file.stat() catch |err| return toWasiError(err); |
| 975 | //mem.writeIntLittle(u16, vm->memory[buf + 0x00 ..][0..2], @enumToInt(toWasiFileType(stat.kind))); |
| 976 | //mem.writeIntLittle(u16, vm->memory[buf + 0x02 ..][0..2], 0); // flags |
| 977 | //mem.writeIntLittle(u64, vm->memory[buf + 0x08 ..][0..8], math.maxInt(u64)); // rights_base |
| 978 | //mem.writeIntLittle(u64, vm->memory[buf + 0x10 ..][0..8], math.maxInt(u64)); // rights_inheriting |
| 979 | return WASI_ESUCCESS; |
| 980 | } |
| 981 | |
| 982 | /// extern fn clock_time_get(clock_id: clockid_t, precision: timestamp_t, timestamp: *timestamp_t) errno_t; |
| 983 | static enum wasi_errno_t wasi_clock_time_get(struct VirtualMachine *vm, |
| 984 | uint32_t clock_id, uint64_t precision, uint32_t timestamp) |
| 985 | { |
| 986 | panic("TODO implement wasi_clock_time_get"); |
| 987 | ////const host_clock_id = toHostClockId(clock_id); |
| 988 | //_ = precision; |
| 989 | //_ = clock_id; |
| 990 | //const wasi_ts = toWasiTimestamp(std.time.nanoTimestamp()); |
| 991 | //mem.writeIntLittle(u64, vm->memory[timestamp..][0..8], wasi_ts); |
| 992 | return WASI_ESUCCESS; |
| 993 | } |
| 994 | |
| 995 | ///pub extern "wasi_snapshot_preview1" fn debug(string: [*:0]const u8, x: u64) void; |
| 996 | void wasi_debug(struct VirtualMachine *vm, uint32_t text, uint64_t n) { |
| 997 | panic("TODO implement wasi_debug"); |
| 998 | //const s = mem.sliceTo(vm->memory[text..], 0); |
| 999 | //trace_log.debug("wasi_debug: '{s}' number={d} {x}", .{ s, n, n }); |
| 1000 | } |
| 1001 | |
| 1002 | /// pub extern "wasi_snapshot_preview1" fn debug_slice(ptr: [*]const u8, len: usize) void; |
| 1003 | void wasi_debug_slice(struct VirtualMachine *vm, uint32_t ptr, uint32_t len) { |
| 1004 | panic("TODO implement wasi_debug_slice"); |
| 1005 | //const s = vm->memory[ptr..][0..len]; |
| 1006 | //trace_log.debug("wasi_debug_slice: '{s}'", .{s}); |
| 1007 | } |
| 1008 | |
| 1009 | |
| 1010 | |
| 1011 | struct Label { |
| 1012 | enum WasmOp opcode; |
| 1013 | uint32_t stack_depth; |
| 1014 | struct TypeInfo type_info; |
| 1015 | // this is a UINT32_MAX terminated linked list that is stored in the operands array |
| 1016 | uint32_t ref_list; |
| 1017 | union { |
| 1018 | struct ProgramCounter loop_pc; |
| 1019 | uint32_t else_ref; |
| 1020 | } extra; |
| 1021 | }; |
| 1022 | |
| 1023 | static uint32_t Label_operandCount(const struct Label *label) { |
| 1024 | if (label->opcode == WasmOp_loop) { |
| 1025 | return label->type_info.param_count; |
| 1026 | } else { |
| 1027 | return label->type_info.result_count; |
| 1028 | } |
| 1029 | } |
| 1030 | |
| 1031 | static bool Label_operandType(const struct Label *label, uint32_t index) { |
| 1032 | if (label->opcode == WasmOp_loop) { |
| 1033 | return bs_isSet(&label->type_info.param_types, index); |
| 1034 | } else { |
| 1035 | return bs_isSet(&label->type_info.result_types, index); |
| 1036 | } |
| 1037 | } |
| 1038 | |
| 1039 | static void vm_decodeCode(struct VirtualMachine *vm, struct Function *func, uint32_t *code_i, |
| 1040 | struct ProgramCounter *pc) |
| 1041 | { |
| 1042 | const char *mod_ptr = vm->mod_ptr; |
| 1043 | uint8_t *opcodes = vm->opcodes; |
| 1044 | uint32_t *operands = vm->operands; |
| 1045 | struct TypeInfo *func_type_info = &vm->types[func->type_idx]; |
| 1046 | |
| 1047 | uint32_t unreachable_depth = 0; |
| 1048 | uint32_t stack_depth = func_type_info->param_count + func->locals_count + 2; |
| 1049 | static uint32_t stack_types[1 << (12 - 3)]; |
| 1050 | |
| 1051 | static struct Label labels[1 << 9]; |
| 1052 | uint32_t label_i = 0; |
| 1053 | labels[label_i].opcode = WasmOp_block; |
| 1054 | labels[label_i].stack_depth = stack_depth; |
| 1055 | labels[label_i].type_info = vm->types[func->type_idx]; |
| 1056 | labels[label_i].ref_list = UINT32_MAX; |
| 1057 | |
| 1058 | for (;;) { |
| 1059 | enum WasmOp opcode = (uint8_t)mod_ptr[*code_i]; |
| 1060 | *code_i += 1; |
| 1061 | enum WasmPrefixedOp prefixed_opcode; |
| 1062 | if (opcode == WasmOp_prefixed) prefixed_opcode = read32_uleb128(mod_ptr, code_i); |
| 1063 | |
| 1064 | uint32_t initial_stack_depth = stack_depth; |
| 1065 | if (unreachable_depth == 0) { |
| 1066 | switch (opcode) { |
| 1067 | case WasmOp_unreachable: |
| 1068 | case WasmOp_nop: |
| 1069 | case WasmOp_block: |
| 1070 | case WasmOp_loop: |
| 1071 | case WasmOp_else: |
| 1072 | case WasmOp_end: |
| 1073 | case WasmOp_br: |
| 1074 | case WasmOp_call: |
| 1075 | case WasmOp_return: |
| 1076 | break; |
| 1077 | |
| 1078 | case WasmOp_if: |
| 1079 | case WasmOp_br_if: |
| 1080 | case WasmOp_br_table: |
| 1081 | case WasmOp_call_indirect: |
| 1082 | case WasmOp_drop: |
| 1083 | case WasmOp_local_set: |
| 1084 | case WasmOp_global_set: |
| 1085 | stack_depth -= 1; |
| 1086 | break; |
| 1087 | |
| 1088 | case WasmOp_select: |
| 1089 | stack_depth -= 2; |
| 1090 | break; |
| 1091 | |
| 1092 | case WasmOp_local_get: |
| 1093 | case WasmOp_global_get: |
| 1094 | case WasmOp_memory_size: |
| 1095 | case WasmOp_i32_const: |
| 1096 | case WasmOp_i64_const: |
| 1097 | case WasmOp_f32_const: |
| 1098 | case WasmOp_f64_const: |
| 1099 | stack_depth += 1; |
| 1100 | break; |
| 1101 | |
| 1102 | case WasmOp_local_tee: |
| 1103 | case WasmOp_i32_load: |
| 1104 | case WasmOp_i64_load: |
| 1105 | case WasmOp_f32_load: |
| 1106 | case WasmOp_f64_load: |
| 1107 | case WasmOp_i32_load8_s: |
| 1108 | case WasmOp_i32_load8_u: |
| 1109 | case WasmOp_i32_load16_s: |
| 1110 | case WasmOp_i32_load16_u: |
| 1111 | case WasmOp_i64_load8_s: |
| 1112 | case WasmOp_i64_load8_u: |
| 1113 | case WasmOp_i64_load16_s: |
| 1114 | case WasmOp_i64_load16_u: |
| 1115 | case WasmOp_i64_load32_s: |
| 1116 | case WasmOp_i64_load32_u: |
| 1117 | case WasmOp_memory_grow: |
| 1118 | case WasmOp_i32_eqz: |
| 1119 | case WasmOp_i32_clz: |
| 1120 | case WasmOp_i32_ctz: |
| 1121 | case WasmOp_i32_popcnt: |
| 1122 | case WasmOp_i64_eqz: |
| 1123 | case WasmOp_i64_clz: |
| 1124 | case WasmOp_i64_ctz: |
| 1125 | case WasmOp_i64_popcnt: |
| 1126 | case WasmOp_f32_abs: |
| 1127 | case WasmOp_f32_neg: |
| 1128 | case WasmOp_f32_ceil: |
| 1129 | case WasmOp_f32_floor: |
| 1130 | case WasmOp_f32_trunc: |
| 1131 | case WasmOp_f32_nearest: |
| 1132 | case WasmOp_f32_sqrt: |
| 1133 | case WasmOp_f64_abs: |
| 1134 | case WasmOp_f64_neg: |
| 1135 | case WasmOp_f64_ceil: |
| 1136 | case WasmOp_f64_floor: |
| 1137 | case WasmOp_f64_trunc: |
| 1138 | case WasmOp_f64_nearest: |
| 1139 | case WasmOp_f64_sqrt: |
| 1140 | case WasmOp_i32_wrap_i64: |
| 1141 | case WasmOp_i32_trunc_f32_s: |
| 1142 | case WasmOp_i32_trunc_f32_u: |
| 1143 | case WasmOp_i32_trunc_f64_s: |
| 1144 | case WasmOp_i32_trunc_f64_u: |
| 1145 | case WasmOp_i64_extend_i32_s: |
| 1146 | case WasmOp_i64_extend_i32_u: |
| 1147 | case WasmOp_i64_trunc_f32_s: |
| 1148 | case WasmOp_i64_trunc_f32_u: |
| 1149 | case WasmOp_i64_trunc_f64_s: |
| 1150 | case WasmOp_i64_trunc_f64_u: |
| 1151 | case WasmOp_f32_convert_i32_s: |
| 1152 | case WasmOp_f32_convert_i32_u: |
| 1153 | case WasmOp_f32_convert_i64_s: |
| 1154 | case WasmOp_f32_convert_i64_u: |
| 1155 | case WasmOp_f32_demote_f64: |
| 1156 | case WasmOp_f64_convert_i32_s: |
| 1157 | case WasmOp_f64_convert_i32_u: |
| 1158 | case WasmOp_f64_convert_i64_s: |
| 1159 | case WasmOp_f64_convert_i64_u: |
| 1160 | case WasmOp_f64_promote_f32: |
| 1161 | case WasmOp_i32_reinterpret_f32: |
| 1162 | case WasmOp_i64_reinterpret_f64: |
| 1163 | case WasmOp_f32_reinterpret_i32: |
| 1164 | case WasmOp_f64_reinterpret_i64: |
| 1165 | case WasmOp_i32_extend8_s: |
| 1166 | case WasmOp_i32_extend16_s: |
| 1167 | case WasmOp_i64_extend8_s: |
| 1168 | case WasmOp_i64_extend16_s: |
| 1169 | case WasmOp_i64_extend32_s: |
| 1170 | break; |
| 1171 | |
| 1172 | case WasmOp_i32_store: |
| 1173 | case WasmOp_i64_store: |
| 1174 | case WasmOp_f32_store: |
| 1175 | case WasmOp_f64_store: |
| 1176 | case WasmOp_i32_store8: |
| 1177 | case WasmOp_i32_store16: |
| 1178 | case WasmOp_i64_store8: |
| 1179 | case WasmOp_i64_store16: |
| 1180 | case WasmOp_i64_store32: |
| 1181 | stack_depth -= 2; |
| 1182 | break; |
| 1183 | |
| 1184 | case WasmOp_i32_eq: |
| 1185 | case WasmOp_i32_ne: |
| 1186 | case WasmOp_i32_lt_s: |
| 1187 | case WasmOp_i32_lt_u: |
| 1188 | case WasmOp_i32_gt_s: |
| 1189 | case WasmOp_i32_gt_u: |
| 1190 | case WasmOp_i32_le_s: |
| 1191 | case WasmOp_i32_le_u: |
| 1192 | case WasmOp_i32_ge_s: |
| 1193 | case WasmOp_i32_ge_u: |
| 1194 | case WasmOp_i64_eq: |
| 1195 | case WasmOp_i64_ne: |
| 1196 | case WasmOp_i64_lt_s: |
| 1197 | case WasmOp_i64_lt_u: |
| 1198 | case WasmOp_i64_gt_s: |
| 1199 | case WasmOp_i64_gt_u: |
| 1200 | case WasmOp_i64_le_s: |
| 1201 | case WasmOp_i64_le_u: |
| 1202 | case WasmOp_i64_ge_s: |
| 1203 | case WasmOp_i64_ge_u: |
| 1204 | case WasmOp_f32_eq: |
| 1205 | case WasmOp_f32_ne: |
| 1206 | case WasmOp_f32_lt: |
| 1207 | case WasmOp_f32_gt: |
| 1208 | case WasmOp_f32_le: |
| 1209 | case WasmOp_f32_ge: |
| 1210 | case WasmOp_f64_eq: |
| 1211 | case WasmOp_f64_ne: |
| 1212 | case WasmOp_f64_lt: |
| 1213 | case WasmOp_f64_gt: |
| 1214 | case WasmOp_f64_le: |
| 1215 | case WasmOp_f64_ge: |
| 1216 | case WasmOp_i32_add: |
| 1217 | case WasmOp_i32_sub: |
| 1218 | case WasmOp_i32_mul: |
| 1219 | case WasmOp_i32_div_s: |
| 1220 | case WasmOp_i32_div_u: |
| 1221 | case WasmOp_i32_rem_s: |
| 1222 | case WasmOp_i32_rem_u: |
| 1223 | case WasmOp_i32_and: |
| 1224 | case WasmOp_i32_or: |
| 1225 | case WasmOp_i32_xor: |
| 1226 | case WasmOp_i32_shl: |
| 1227 | case WasmOp_i32_shr_s: |
| 1228 | case WasmOp_i32_shr_u: |
| 1229 | case WasmOp_i32_rotl: |
| 1230 | case WasmOp_i32_rotr: |
| 1231 | case WasmOp_i64_add: |
| 1232 | case WasmOp_i64_sub: |
| 1233 | case WasmOp_i64_mul: |
| 1234 | case WasmOp_i64_div_s: |
| 1235 | case WasmOp_i64_div_u: |
| 1236 | case WasmOp_i64_rem_s: |
| 1237 | case WasmOp_i64_rem_u: |
| 1238 | case WasmOp_i64_and: |
| 1239 | case WasmOp_i64_or: |
| 1240 | case WasmOp_i64_xor: |
| 1241 | case WasmOp_i64_shl: |
| 1242 | case WasmOp_i64_shr_s: |
| 1243 | case WasmOp_i64_shr_u: |
| 1244 | case WasmOp_i64_rotl: |
| 1245 | case WasmOp_i64_rotr: |
| 1246 | case WasmOp_f32_add: |
| 1247 | case WasmOp_f32_sub: |
| 1248 | case WasmOp_f32_mul: |
| 1249 | case WasmOp_f32_div: |
| 1250 | case WasmOp_f32_min: |
| 1251 | case WasmOp_f32_max: |
| 1252 | case WasmOp_f32_copysign: |
| 1253 | case WasmOp_f64_add: |
| 1254 | case WasmOp_f64_sub: |
| 1255 | case WasmOp_f64_mul: |
| 1256 | case WasmOp_f64_div: |
| 1257 | case WasmOp_f64_min: |
| 1258 | case WasmOp_f64_max: |
| 1259 | case WasmOp_f64_copysign: |
| 1260 | stack_depth -= 1; |
| 1261 | break; |
| 1262 | |
| 1263 | case WasmOp_prefixed: |
| 1264 | switch (prefixed_opcode) { |
| 1265 | case WasmPrefixedOp_i32_trunc_sat_f32_s: |
| 1266 | case WasmPrefixedOp_i32_trunc_sat_f32_u: |
| 1267 | case WasmPrefixedOp_i32_trunc_sat_f64_s: |
| 1268 | case WasmPrefixedOp_i32_trunc_sat_f64_u: |
| 1269 | case WasmPrefixedOp_i64_trunc_sat_f32_s: |
| 1270 | case WasmPrefixedOp_i64_trunc_sat_f32_u: |
| 1271 | case WasmPrefixedOp_i64_trunc_sat_f64_s: |
| 1272 | case WasmPrefixedOp_i64_trunc_sat_f64_u: |
| 1273 | break; |
| 1274 | |
| 1275 | case WasmPrefixedOp_memory_init: |
| 1276 | case WasmPrefixedOp_memory_copy: |
| 1277 | case WasmPrefixedOp_memory_fill: |
| 1278 | case WasmPrefixedOp_table_init: |
| 1279 | case WasmPrefixedOp_table_copy: |
| 1280 | case WasmPrefixedOp_table_fill: |
| 1281 | stack_depth -= 3; |
| 1282 | break; |
| 1283 | |
| 1284 | case WasmPrefixedOp_data_drop: |
| 1285 | case WasmPrefixedOp_elem_drop: |
| 1286 | break; |
| 1287 | |
| 1288 | case WasmPrefixedOp_table_grow: |
| 1289 | stack_depth -= 1; |
| 1290 | break; |
| 1291 | |
| 1292 | case WasmPrefixedOp_table_size: |
| 1293 | stack_depth += 1; |
| 1294 | break; |
| 1295 | |
| 1296 | default: panic("unexpected prefixed opcode"); |
| 1297 | } |
| 1298 | break; |
| 1299 | |
| 1300 | default: panic("unexpected opcode"); |
| 1301 | } |
| 1302 | switch (opcode) { |
| 1303 | case WasmOp_unreachable: |
| 1304 | case WasmOp_nop: |
| 1305 | case WasmOp_block: |
| 1306 | case WasmOp_loop: |
| 1307 | case WasmOp_else: |
| 1308 | case WasmOp_end: |
| 1309 | case WasmOp_br: |
| 1310 | case WasmOp_call: |
| 1311 | case WasmOp_return: |
| 1312 | case WasmOp_if: |
| 1313 | case WasmOp_br_if: |
| 1314 | case WasmOp_br_table: |
| 1315 | case WasmOp_call_indirect: |
| 1316 | case WasmOp_drop: |
| 1317 | case WasmOp_select: |
| 1318 | case WasmOp_local_set: |
| 1319 | case WasmOp_local_get: |
| 1320 | case WasmOp_local_tee: |
| 1321 | case WasmOp_global_set: |
| 1322 | case WasmOp_global_get: |
| 1323 | case WasmOp_i32_store: |
| 1324 | case WasmOp_i64_store: |
| 1325 | case WasmOp_f32_store: |
| 1326 | case WasmOp_f64_store: |
| 1327 | case WasmOp_i32_store8: |
| 1328 | case WasmOp_i32_store16: |
| 1329 | case WasmOp_i64_store8: |
| 1330 | case WasmOp_i64_store16: |
| 1331 | case WasmOp_i64_store32: |
| 1332 | break; |
| 1333 | |
| 1334 | case WasmOp_i32_const: |
| 1335 | case WasmOp_f32_const: |
| 1336 | case WasmOp_memory_size: |
| 1337 | case WasmOp_i32_load: |
| 1338 | case WasmOp_f32_load: |
| 1339 | case WasmOp_i32_load8_s: |
| 1340 | case WasmOp_i32_load8_u: |
| 1341 | case WasmOp_i32_load16_s: |
| 1342 | case WasmOp_i32_load16_u: |
| 1343 | case WasmOp_memory_grow: |
| 1344 | case WasmOp_i32_eqz: |
| 1345 | case WasmOp_i32_clz: |
| 1346 | case WasmOp_i32_ctz: |
| 1347 | case WasmOp_i32_popcnt: |
| 1348 | case WasmOp_i64_eqz: |
| 1349 | case WasmOp_f32_abs: |
| 1350 | case WasmOp_f32_neg: |
| 1351 | case WasmOp_f32_ceil: |
| 1352 | case WasmOp_f32_floor: |
| 1353 | case WasmOp_f32_trunc: |
| 1354 | case WasmOp_f32_nearest: |
| 1355 | case WasmOp_f32_sqrt: |
| 1356 | case WasmOp_i32_wrap_i64: |
| 1357 | case WasmOp_i32_trunc_f32_s: |
| 1358 | case WasmOp_i32_trunc_f32_u: |
| 1359 | case WasmOp_i32_trunc_f64_s: |
| 1360 | case WasmOp_i32_trunc_f64_u: |
| 1361 | case WasmOp_f32_convert_i32_s: |
| 1362 | case WasmOp_f32_convert_i32_u: |
| 1363 | case WasmOp_f32_convert_i64_s: |
| 1364 | case WasmOp_f32_convert_i64_u: |
| 1365 | case WasmOp_f32_demote_f64: |
| 1366 | case WasmOp_i32_reinterpret_f32: |
| 1367 | case WasmOp_f32_reinterpret_i32: |
| 1368 | case WasmOp_i32_extend8_s: |
| 1369 | case WasmOp_i32_extend16_s: |
| 1370 | case WasmOp_i32_eq: |
| 1371 | case WasmOp_i32_ne: |
| 1372 | case WasmOp_i32_lt_s: |
| 1373 | case WasmOp_i32_lt_u: |
| 1374 | case WasmOp_i32_gt_s: |
| 1375 | case WasmOp_i32_gt_u: |
| 1376 | case WasmOp_i32_le_s: |
| 1377 | case WasmOp_i32_le_u: |
| 1378 | case WasmOp_i32_ge_s: |
| 1379 | case WasmOp_i32_ge_u: |
| 1380 | case WasmOp_i64_eq: |
| 1381 | case WasmOp_i64_ne: |
| 1382 | case WasmOp_i64_lt_s: |
| 1383 | case WasmOp_i64_lt_u: |
| 1384 | case WasmOp_i64_gt_s: |
| 1385 | case WasmOp_i64_gt_u: |
| 1386 | case WasmOp_i64_le_s: |
| 1387 | case WasmOp_i64_le_u: |
| 1388 | case WasmOp_i64_ge_s: |
| 1389 | case WasmOp_i64_ge_u: |
| 1390 | case WasmOp_f32_eq: |
| 1391 | case WasmOp_f32_ne: |
| 1392 | case WasmOp_f32_lt: |
| 1393 | case WasmOp_f32_gt: |
| 1394 | case WasmOp_f32_le: |
| 1395 | case WasmOp_f32_ge: |
| 1396 | case WasmOp_f64_eq: |
| 1397 | case WasmOp_f64_ne: |
| 1398 | case WasmOp_f64_lt: |
| 1399 | case WasmOp_f64_gt: |
| 1400 | case WasmOp_f64_le: |
| 1401 | case WasmOp_f64_ge: |
| 1402 | case WasmOp_i32_add: |
| 1403 | case WasmOp_i32_sub: |
| 1404 | case WasmOp_i32_mul: |
| 1405 | case WasmOp_i32_div_s: |
| 1406 | case WasmOp_i32_div_u: |
| 1407 | case WasmOp_i32_rem_s: |
| 1408 | case WasmOp_i32_rem_u: |
| 1409 | case WasmOp_i32_and: |
| 1410 | case WasmOp_i32_or: |
| 1411 | case WasmOp_i32_xor: |
| 1412 | case WasmOp_i32_shl: |
| 1413 | case WasmOp_i32_shr_s: |
| 1414 | case WasmOp_i32_shr_u: |
| 1415 | case WasmOp_i32_rotl: |
| 1416 | case WasmOp_i32_rotr: |
| 1417 | case WasmOp_f32_add: |
| 1418 | case WasmOp_f32_sub: |
| 1419 | case WasmOp_f32_mul: |
| 1420 | case WasmOp_f32_div: |
| 1421 | case WasmOp_f32_min: |
| 1422 | case WasmOp_f32_max: |
| 1423 | case WasmOp_f32_copysign: |
| 1424 | bs_unset(stack_types, stack_depth - 1); |
| 1425 | break; |
| 1426 | |
| 1427 | case WasmOp_i64_const: |
| 1428 | case WasmOp_f64_const: |
| 1429 | case WasmOp_i64_load: |
| 1430 | case WasmOp_f64_load: |
| 1431 | case WasmOp_i64_load8_s: |
| 1432 | case WasmOp_i64_load8_u: |
| 1433 | case WasmOp_i64_load16_s: |
| 1434 | case WasmOp_i64_load16_u: |
| 1435 | case WasmOp_i64_load32_s: |
| 1436 | case WasmOp_i64_load32_u: |
| 1437 | case WasmOp_i64_clz: |
| 1438 | case WasmOp_i64_ctz: |
| 1439 | case WasmOp_i64_popcnt: |
| 1440 | case WasmOp_f64_abs: |
| 1441 | case WasmOp_f64_neg: |
| 1442 | case WasmOp_f64_ceil: |
| 1443 | case WasmOp_f64_floor: |
| 1444 | case WasmOp_f64_trunc: |
| 1445 | case WasmOp_f64_nearest: |
| 1446 | case WasmOp_f64_sqrt: |
| 1447 | case WasmOp_i64_extend_i32_s: |
| 1448 | case WasmOp_i64_extend_i32_u: |
| 1449 | case WasmOp_i64_trunc_f32_s: |
| 1450 | case WasmOp_i64_trunc_f32_u: |
| 1451 | case WasmOp_i64_trunc_f64_s: |
| 1452 | case WasmOp_i64_trunc_f64_u: |
| 1453 | case WasmOp_f64_convert_i32_s: |
| 1454 | case WasmOp_f64_convert_i32_u: |
| 1455 | case WasmOp_f64_convert_i64_s: |
| 1456 | case WasmOp_f64_convert_i64_u: |
| 1457 | case WasmOp_f64_promote_f32: |
| 1458 | case WasmOp_i64_reinterpret_f64: |
| 1459 | case WasmOp_f64_reinterpret_i64: |
| 1460 | case WasmOp_i64_extend8_s: |
| 1461 | case WasmOp_i64_extend16_s: |
| 1462 | case WasmOp_i64_extend32_s: |
| 1463 | case WasmOp_i64_add: |
| 1464 | case WasmOp_i64_sub: |
| 1465 | case WasmOp_i64_mul: |
| 1466 | case WasmOp_i64_div_s: |
| 1467 | case WasmOp_i64_div_u: |
| 1468 | case WasmOp_i64_rem_s: |
| 1469 | case WasmOp_i64_rem_u: |
| 1470 | case WasmOp_i64_and: |
| 1471 | case WasmOp_i64_or: |
| 1472 | case WasmOp_i64_xor: |
| 1473 | case WasmOp_i64_shl: |
| 1474 | case WasmOp_i64_shr_s: |
| 1475 | case WasmOp_i64_shr_u: |
| 1476 | case WasmOp_i64_rotl: |
| 1477 | case WasmOp_i64_rotr: |
| 1478 | case WasmOp_f64_add: |
| 1479 | case WasmOp_f64_sub: |
| 1480 | case WasmOp_f64_mul: |
| 1481 | case WasmOp_f64_div: |
| 1482 | case WasmOp_f64_min: |
| 1483 | case WasmOp_f64_max: |
| 1484 | case WasmOp_f64_copysign: |
| 1485 | bs_set(stack_types, stack_depth - 1); |
| 1486 | break; |
| 1487 | |
| 1488 | case WasmOp_prefixed: |
| 1489 | switch (prefixed_opcode) { |
| 1490 | case WasmPrefixedOp_memory_init: |
| 1491 | case WasmPrefixedOp_memory_copy: |
| 1492 | case WasmPrefixedOp_memory_fill: |
| 1493 | case WasmPrefixedOp_table_init: |
| 1494 | case WasmPrefixedOp_table_copy: |
| 1495 | case WasmPrefixedOp_table_fill: |
| 1496 | case WasmPrefixedOp_data_drop: |
| 1497 | case WasmPrefixedOp_elem_drop: |
| 1498 | break; |
| 1499 | |
| 1500 | case WasmPrefixedOp_i32_trunc_sat_f32_s: |
| 1501 | case WasmPrefixedOp_i32_trunc_sat_f32_u: |
| 1502 | case WasmPrefixedOp_i32_trunc_sat_f64_s: |
| 1503 | case WasmPrefixedOp_i32_trunc_sat_f64_u: |
| 1504 | case WasmPrefixedOp_table_grow: |
| 1505 | case WasmPrefixedOp_table_size: |
| 1506 | bs_unset(stack_types, stack_depth - 1); |
| 1507 | break; |
| 1508 | |
| 1509 | case WasmPrefixedOp_i64_trunc_sat_f32_s: |
| 1510 | case WasmPrefixedOp_i64_trunc_sat_f32_u: |
| 1511 | case WasmPrefixedOp_i64_trunc_sat_f64_s: |
| 1512 | case WasmPrefixedOp_i64_trunc_sat_f64_u: |
| 1513 | bs_set(stack_types, stack_depth - 1); |
| 1514 | break; |
| 1515 | |
| 1516 | default: panic("unexpected prefixed opcode"); |
| 1517 | } |
| 1518 | break; |
| 1519 | |
| 1520 | default: panic("unexpected opcode"); |
| 1521 | } |
| 1522 | } |
| 1523 | |
| 1524 | switch (opcode) { |
| 1525 | case WasmOp_unreachable: |
| 1526 | if (unreachable_depth == 0) { |
| 1527 | opcodes[pc->opcode] = Op_unreachable; |
| 1528 | pc->opcode += 1; |
| 1529 | } |
| 1530 | break; |
| 1531 | |
| 1532 | case WasmOp_nop: |
| 1533 | case WasmOp_i32_reinterpret_f32: |
| 1534 | case WasmOp_i64_reinterpret_f64: |
| 1535 | case WasmOp_f32_reinterpret_i32: |
| 1536 | case WasmOp_f64_reinterpret_i64: |
| 1537 | break; |
| 1538 | |
| 1539 | case WasmOp_block: |
| 1540 | case WasmOp_loop: |
| 1541 | case WasmOp_if: |
| 1542 | { |
| 1543 | int64_t block_type = read64_ileb128(mod_ptr, code_i); |
| 1544 | if (unreachable_depth == 0) { |
| 1545 | label_i += 1; |
| 1546 | struct Label *label = &labels[label_i]; |
| 1547 | label->opcode = opcode; |
| 1548 | if (block_type < 0) { |
| 1549 | label->type_info.param_count = 0; |
| 1550 | label->type_info.param_types = 0; |
| 1551 | label->type_info.result_count = block_type != -0x40; |
| 1552 | label->type_info.result_types = 0; |
| 1553 | switch (block_type) { |
| 1554 | case -0x40: break; |
| 1555 | case -1: case -3: bs_unset(&label->type_info.param_types, 0); break; |
| 1556 | case -2: case -4: bs_set(&label->type_info.param_types, 0); break; |
| 1557 | default: panic("unexpected param type"); |
| 1558 | } |
| 1559 | } else { |
| 1560 | label->type_info = vm->types[block_type]; |
| 1561 | } |
| 1562 | label->stack_depth = stack_depth - label->type_info.param_count; |
| 1563 | label->ref_list = UINT32_MAX; |
| 1564 | switch (opcode) { |
| 1565 | case WasmOp_block: |
| 1566 | break; |
| 1567 | |
| 1568 | case WasmOp_loop: |
| 1569 | label->extra.loop_pc = *pc; |
| 1570 | break; |
| 1571 | |
| 1572 | case WasmOp_if: |
| 1573 | opcodes[pc->opcode] = Op_br_if_eqz_void; |
| 1574 | pc->opcode += 1; |
| 1575 | operands[pc->operand] = 0; |
| 1576 | label->extra.else_ref = pc->operand + 1; |
| 1577 | pc->operand += 3; |
| 1578 | break; |
| 1579 | |
| 1580 | default: panic("unexpected label opcode"); |
| 1581 | } |
| 1582 | } |
| 1583 | } |
| 1584 | break; |
| 1585 | |
| 1586 | case WasmOp_else: |
| 1587 | { |
| 1588 | struct Label *label = &labels[label_i]; |
| 1589 | assert(label->opcode == WasmOp_if); |
| 1590 | label->opcode = WasmOp_else; |
| 1591 | if (unreachable_depth == 0) { |
| 1592 | uint32_t operand_count = Label_operandCount(label); |
| 1593 | switch (operand_count) { |
| 1594 | case 0: |
| 1595 | opcodes[pc->opcode] = Op_br_void; |
| 1596 | break; |
| 1597 | |
| 1598 | case 1: |
| 1599 | switch ((int)Label_operandType(label, 0)) { |
| 1600 | case false: opcodes[pc->opcode] = Op_br_32; break; |
| 1601 | case true: opcodes[pc->opcode] = Op_br_64; break; |
| 1602 | } |
| 1603 | break; |
| 1604 | |
| 1605 | default: panic("unexpected operand count"); |
| 1606 | } |
| 1607 | pc->opcode += 1; |
| 1608 | operands[pc->operand + 0] = stack_depth - operand_count - label->stack_depth; |
| 1609 | operands[pc->operand + 1] = label->ref_list; |
| 1610 | label->ref_list = pc->operand + 1; |
| 1611 | pc->operand += 3; |
| 1612 | assert(stack_depth - label->type_info.result_count == label->stack_depth); |
| 1613 | } else unreachable_depth = 0; |
| 1614 | operands[label->extra.else_ref + 0] = pc->opcode; |
| 1615 | operands[label->extra.else_ref + 1] = pc->operand; |
| 1616 | stack_depth = label->stack_depth + label->type_info.param_count; |
| 1617 | }; |
| 1618 | break; |
| 1619 | |
| 1620 | case WasmOp_end: |
| 1621 | if (unreachable_depth <= 1) { |
| 1622 | unreachable_depth = 0; |
| 1623 | struct Label *label = &labels[label_i]; |
| 1624 | struct ProgramCounter *target_pc = (label->opcode == WasmOp_loop) ? &label->extra.loop_pc : pc; |
| 1625 | if (label->opcode == WasmOp_if) { |
| 1626 | operands[label->extra.else_ref + 0] = target_pc->opcode; |
| 1627 | operands[label->extra.else_ref + 1] = target_pc->operand; |
| 1628 | } |
| 1629 | uint32_t ref = label->ref_list; |
| 1630 | while (ref != UINT32_MAX) { |
| 1631 | uint32_t next_ref = operands[ref]; |
| 1632 | operands[ref + 0] = target_pc->opcode; |
| 1633 | operands[ref + 1] = target_pc->operand; |
| 1634 | ref = next_ref; |
| 1635 | } |
| 1636 | stack_depth = label->stack_depth + label->type_info.result_count; |
| 1637 | |
| 1638 | if (label_i == 0) { |
| 1639 | uint32_t operand_count = Label_operandCount(&labels[0]); |
| 1640 | switch (operand_count) { |
| 1641 | case 0: |
| 1642 | opcodes[pc->opcode] = Op_return_void; |
| 1643 | break; |
| 1644 | |
| 1645 | case 1: |
| 1646 | switch ((int)Label_operandType(&labels[0], 0)) { |
| 1647 | case false: opcodes[pc->opcode] = Op_return_32; break; |
| 1648 | case true: opcodes[pc->opcode] = Op_return_64; break; |
| 1649 | } |
| 1650 | break; |
| 1651 | |
| 1652 | default: panic("unexpected operand count"); |
| 1653 | } |
| 1654 | pc->opcode += 1; |
| 1655 | operands[pc->operand + 0] = 2 + operand_count; |
| 1656 | stack_depth -= operand_count; |
| 1657 | assert(stack_depth == labels[0].stack_depth); |
| 1658 | operands[pc->operand + 1] = stack_depth; |
| 1659 | pc->operand += 2; |
| 1660 | return; |
| 1661 | } |
| 1662 | label_i -= 1; |
| 1663 | } else unreachable_depth -= 1; |
| 1664 | break; |
| 1665 | |
| 1666 | case WasmOp_br: |
| 1667 | case WasmOp_br_if: |
| 1668 | { |
| 1669 | uint32_t label_idx = read32_uleb128(mod_ptr, code_i); |
| 1670 | if (unreachable_depth == 0) { |
| 1671 | struct Label *label = &labels[label_i - label_idx]; |
| 1672 | uint32_t operand_count = Label_operandCount(label); |
| 1673 | switch (opcode) { |
| 1674 | case WasmOp_br: |
| 1675 | switch (operand_count) { |
| 1676 | case 0: |
| 1677 | opcodes[pc->opcode] = Op_br_void; |
| 1678 | break; |
| 1679 | |
| 1680 | case 1: |
| 1681 | switch ((int)Label_operandType(label, 0)) { |
| 1682 | case false: opcodes[pc->opcode] = Op_br_32; break; |
| 1683 | case true: opcodes[pc->opcode] = Op_br_64; break; |
| 1684 | } |
| 1685 | break; |
| 1686 | |
| 1687 | default: panic("unexpected operand count"); |
| 1688 | } |
| 1689 | break; |
| 1690 | |
| 1691 | case WasmOp_br_if: |
| 1692 | switch (operand_count) { |
| 1693 | case 0: |
| 1694 | opcodes[pc->opcode] = Op_br_if_nez_void; |
| 1695 | break; |
| 1696 | |
| 1697 | case 1: |
| 1698 | switch ((int)Label_operandType(label, 0)) { |
| 1699 | case false: opcodes[pc->opcode] = Op_br_if_nez_32; break; |
| 1700 | case true: opcodes[pc->opcode] = Op_br_if_nez_64; break; |
| 1701 | } |
| 1702 | break; |
| 1703 | |
| 1704 | default: panic("unexpected operand count"); |
| 1705 | } |
| 1706 | break; |
| 1707 | |
| 1708 | default: panic("unexpected opcode"); |
| 1709 | } |
| 1710 | pc->opcode += 1; |
| 1711 | operands[pc->operand + 0] = stack_depth - operand_count - label->stack_depth; |
| 1712 | operands[pc->operand + 1] = label->ref_list; |
| 1713 | label->ref_list = pc->operand + 1; |
| 1714 | pc->operand += 3; |
| 1715 | } |
| 1716 | } |
| 1717 | break; |
| 1718 | |
| 1719 | case WasmOp_br_table: |
| 1720 | { |
| 1721 | uint32_t labels_len = read32_uleb128(mod_ptr, code_i); |
| 1722 | for (uint32_t i = 0; i <= labels_len; i += 1) { |
| 1723 | uint32_t label_idx = read32_uleb128(mod_ptr, code_i); |
| 1724 | if (unreachable_depth != 0) continue; |
| 1725 | struct Label *label = &labels[label_i - label_idx]; |
| 1726 | uint32_t operand_count = Label_operandCount(label); |
| 1727 | if (i == 0) { |
| 1728 | switch (operand_count) { |
| 1729 | case 0: |
| 1730 | opcodes[pc->opcode] = Op_br_table_void; |
| 1731 | break; |
| 1732 | |
| 1733 | case 1: |
| 1734 | switch ((int)Label_operandType(label, 0)) { |
| 1735 | case false: opcodes[pc->opcode] = Op_br_table_32; break; |
| 1736 | case true: opcodes[pc->opcode] = Op_br_table_64; break; |
| 1737 | } |
| 1738 | break; |
| 1739 | |
| 1740 | default: panic("unexpected operand count"); |
| 1741 | } |
| 1742 | pc->opcode += 1; |
| 1743 | operands[pc->operand] = labels_len; |
| 1744 | pc->operand += 1; |
| 1745 | } |
| 1746 | operands[pc->operand + 0] = stack_depth - operand_count - label->stack_depth; |
| 1747 | operands[pc->operand + 1] = label->ref_list; |
| 1748 | label->ref_list = pc->operand + 1; |
| 1749 | pc->operand += 3; |
| 1750 | } |
| 1751 | |
| 1752 | opcodes[pc->opcode] = opcode; |
| 1753 | pc->opcode += 1; |
| 1754 | operands[pc->operand] = labels_len; |
| 1755 | pc->operand += 1; |
| 1756 | } |
| 1757 | break; |
| 1758 | |
| 1759 | case WasmOp_call: |
| 1760 | { |
| 1761 | uint32_t fn_id = read32_uleb128(mod_ptr, code_i); |
| 1762 | if (unreachable_depth == 0) { |
| 1763 | opcodes[pc->opcode] = Op_call; |
| 1764 | pc->opcode += 1; |
| 1765 | operands[pc->operand] = fn_id; |
| 1766 | pc->operand += 1; |
| 1767 | uint32_t type_idx = (fn_id < vm->imports_len) ? |
| 1768 | vm->imports[fn_id].type_idx : |
| 1769 | vm->functions[fn_id - vm->imports_len].type_idx; |
| 1770 | struct TypeInfo *type_info = &vm->types[type_idx]; |
| 1771 | stack_depth -= type_info->param_count; |
| 1772 | for (uint32_t result_i = 0; result_i < type_info->result_count; result_i += 1) |
| 1773 | bs_setValue(stack_types, stack_depth + result_i, |
| 1774 | bs_isSet(&type_info->result_types, result_i)); |
| 1775 | stack_depth += type_info->result_count; |
| 1776 | } |
| 1777 | } |
| 1778 | break; |
| 1779 | |
| 1780 | case WasmOp_call_indirect: |
| 1781 | { |
| 1782 | uint32_t type_idx = read32_uleb128(mod_ptr, code_i); |
| 1783 | if (read32_uleb128(mod_ptr, code_i) != 0) panic("unexpected table index"); |
| 1784 | if (unreachable_depth == 0) { |
| 1785 | opcodes[pc->opcode + 0] = Op_wasm; |
| 1786 | opcodes[pc->opcode + 1] = opcode; |
| 1787 | pc->opcode += 2; |
| 1788 | struct TypeInfo *type_info = &vm->types[type_idx]; |
| 1789 | stack_depth -= type_info->param_count; |
| 1790 | for (uint32_t result_i = 0; result_i < type_info->result_count; result_i += 1) |
| 1791 | bs_setValue(stack_types, stack_depth + result_i, |
| 1792 | bs_isSet(&type_info->result_types, result_i)); |
| 1793 | stack_depth += type_info->result_count; |
| 1794 | } |
| 1795 | } |
| 1796 | break; |
| 1797 | |
| 1798 | case WasmOp_return: |
| 1799 | { |
| 1800 | uint32_t operand_count = Label_operandCount(&labels[0]); |
| 1801 | switch (operand_count) { |
| 1802 | case 0: |
| 1803 | opcodes[pc->opcode] = Op_return_void; |
| 1804 | break; |
| 1805 | |
| 1806 | case 1: |
| 1807 | switch ((int)Label_operandType(&labels[0], 0)) { |
| 1808 | case false: opcodes[pc->opcode] = Op_return_32; break; |
| 1809 | case true: opcodes[pc->opcode] = Op_return_64; break; |
| 1810 | } |
| 1811 | break; |
| 1812 | |
| 1813 | default: panic("unexpected operand count"); |
| 1814 | } |
| 1815 | pc->opcode += 1; |
| 1816 | operands[pc->operand + 0] = 2 + stack_depth - labels[0].stack_depth; |
| 1817 | stack_depth -= operand_count; |
| 1818 | operands[pc->operand + 1] = stack_depth; |
| 1819 | pc->operand += 2; |
| 1820 | } |
| 1821 | break; |
| 1822 | |
| 1823 | case WasmOp_select: |
| 1824 | case WasmOp_drop: |
| 1825 | if (unreachable_depth == 0) { |
| 1826 | switch ((int)bs_isSet(stack_types, stack_depth)) { |
| 1827 | case false: |
| 1828 | switch (opcode) { |
| 1829 | case WasmOp_select: |
| 1830 | opcodes[pc->opcode] = Op_select_32; |
| 1831 | break; |
| 1832 | |
| 1833 | case WasmOp_drop: |
| 1834 | opcodes[pc->opcode] = Op_drop_32; |
| 1835 | break; |
| 1836 | |
| 1837 | default: panic("unexpected opcode"); |
| 1838 | } |
| 1839 | break; |
| 1840 | |
| 1841 | case true: |
| 1842 | switch (opcode) { |
| 1843 | case WasmOp_select: |
| 1844 | opcodes[pc->opcode] = Op_select_64; |
| 1845 | break; |
| 1846 | |
| 1847 | case WasmOp_drop: |
| 1848 | opcodes[pc->opcode] = Op_drop_64; |
| 1849 | break; |
| 1850 | |
| 1851 | default: panic("unexpected opcode"); |
| 1852 | } |
| 1853 | break; |
| 1854 | } |
| 1855 | pc->opcode += 1; |
| 1856 | } |
| 1857 | break; |
| 1858 | |
| 1859 | case WasmOp_local_get: |
| 1860 | case WasmOp_local_set: |
| 1861 | case WasmOp_local_tee: |
| 1862 | { |
| 1863 | uint32_t local_idx = read32_uleb128(mod_ptr, code_i); |
| 1864 | if (unreachable_depth == 0) { |
| 1865 | bool local_type = bs_isSet(func->local_types, local_idx); |
| 1866 | switch ((int)local_type) { |
| 1867 | case false: |
| 1868 | switch (opcode) { |
| 1869 | case WasmOp_local_get: |
| 1870 | opcodes[pc->opcode] = Op_local_get_32; |
| 1871 | break; |
| 1872 | |
| 1873 | case WasmOp_local_set: |
| 1874 | opcodes[pc->opcode] = Op_local_set_32; |
| 1875 | break; |
| 1876 | |
| 1877 | case WasmOp_local_tee: |
| 1878 | opcodes[pc->opcode] = Op_local_tee_32; |
| 1879 | break; |
| 1880 | |
| 1881 | default: panic("unexpected opcode"); |
| 1882 | } |
| 1883 | break; |
| 1884 | |
| 1885 | case true: |
| 1886 | switch (opcode) { |
| 1887 | case WasmOp_local_get: |
| 1888 | opcodes[pc->opcode] = Op_local_get_64; |
| 1889 | break; |
| 1890 | |
| 1891 | case WasmOp_local_set: |
| 1892 | opcodes[pc->opcode] = Op_local_set_64; |
| 1893 | break; |
| 1894 | |
| 1895 | case WasmOp_local_tee: |
| 1896 | opcodes[pc->opcode] = Op_local_tee_64; |
| 1897 | break; |
| 1898 | |
| 1899 | default: panic("unexpected opcode"); |
| 1900 | } |
| 1901 | break; |
| 1902 | } |
| 1903 | pc->opcode += 1; |
| 1904 | operands[pc->operand] = initial_stack_depth - local_idx; |
| 1905 | pc->operand += 1; |
| 1906 | if (opcode == WasmOp_local_get) bs_setValue(stack_types, stack_depth - 1, local_type); |
| 1907 | } |
| 1908 | } |
| 1909 | break; |
| 1910 | |
| 1911 | case WasmOp_global_get: |
| 1912 | case WasmOp_global_set: |
| 1913 | { |
| 1914 | uint32_t global_idx = read32_uleb128(mod_ptr, code_i); |
| 1915 | if (unreachable_depth == 0) { |
| 1916 | switch (global_idx) { |
| 1917 | case 0: |
| 1918 | switch (opcode) { |
| 1919 | case WasmOp_global_get: |
| 1920 | opcodes[pc->opcode] = Op_global_get_0_32; |
| 1921 | break; |
| 1922 | |
| 1923 | case WasmOp_global_set: |
| 1924 | opcodes[pc->opcode] = Op_global_set_0_32; |
| 1925 | break; |
| 1926 | |
| 1927 | default: panic("unexpected opcode"); |
| 1928 | } |
| 1929 | break; |
| 1930 | |
| 1931 | default: |
| 1932 | switch (opcode) { |
| 1933 | case WasmOp_global_get: |
| 1934 | opcodes[pc->opcode] = Op_global_get_32; |
| 1935 | break; |
| 1936 | |
| 1937 | case WasmOp_global_set: |
| 1938 | opcodes[pc->opcode] = Op_global_set_32; |
| 1939 | break; |
| 1940 | |
| 1941 | default: panic("unexpected opcode"); |
| 1942 | } |
| 1943 | break; |
| 1944 | } |
| 1945 | pc->opcode += 1; |
| 1946 | if (global_idx != 0) { |
| 1947 | operands[pc->operand] = global_idx; |
| 1948 | pc->operand += 1; |
| 1949 | } |
| 1950 | } |
| 1951 | } |
| 1952 | break; |
| 1953 | |
| 1954 | case WasmOp_i32_load: |
| 1955 | case WasmOp_i64_load: |
| 1956 | case WasmOp_f32_load: |
| 1957 | case WasmOp_f64_load: |
| 1958 | case WasmOp_i32_load8_s: |
| 1959 | case WasmOp_i32_load8_u: |
| 1960 | case WasmOp_i32_load16_s: |
| 1961 | case WasmOp_i32_load16_u: |
| 1962 | case WasmOp_i64_load8_s: |
| 1963 | case WasmOp_i64_load8_u: |
| 1964 | case WasmOp_i64_load16_s: |
| 1965 | case WasmOp_i64_load16_u: |
| 1966 | case WasmOp_i64_load32_s: |
| 1967 | case WasmOp_i64_load32_u: |
| 1968 | case WasmOp_i32_store: |
| 1969 | case WasmOp_i64_store: |
| 1970 | case WasmOp_f32_store: |
| 1971 | case WasmOp_f64_store: |
| 1972 | case WasmOp_i32_store8: |
| 1973 | case WasmOp_i32_store16: |
| 1974 | case WasmOp_i64_store8: |
| 1975 | case WasmOp_i64_store16: |
| 1976 | case WasmOp_i64_store32: |
| 1977 | { |
| 1978 | uint32_t alignment = read32_uleb128(mod_ptr, code_i); |
| 1979 | uint32_t offset = read32_uleb128(mod_ptr, code_i); |
| 1980 | (void)alignment; |
| 1981 | if (unreachable_depth == 0) { |
| 1982 | opcodes[pc->opcode + 0] = Op_wasm; |
| 1983 | opcodes[pc->opcode + 1] = opcode; |
| 1984 | pc->opcode += 2; |
| 1985 | operands[pc->operand] = offset; |
| 1986 | pc->operand += 1; |
| 1987 | } |
| 1988 | } |
| 1989 | break; |
| 1990 | |
| 1991 | case WasmOp_memory_size: |
| 1992 | case WasmOp_memory_grow: |
| 1993 | { |
| 1994 | if (mod_ptr[*code_i] != 0) panic("unexpected memory index"); |
| 1995 | *code_i += 1; |
| 1996 | if (unreachable_depth == 0) { |
| 1997 | opcodes[pc->opcode + 0] = Op_wasm; |
| 1998 | opcodes[pc->opcode + 1] = opcode; |
| 1999 | pc->opcode += 2; |
| 2000 | } |
| 2001 | } |
| 2002 | break; |
| 2003 | |
| 2004 | case WasmOp_i32_const: |
| 2005 | { |
| 2006 | uint32_t x = read32_ileb128(mod_ptr, code_i); |
| 2007 | if (unreachable_depth == 0) { |
| 2008 | opcodes[pc->opcode] = Op_const_32; |
| 2009 | pc->opcode += 1; |
| 2010 | operands[pc->operand] = x; |
| 2011 | pc->operand += 1; |
| 2012 | } |
| 2013 | } |
| 2014 | break; |
| 2015 | |
| 2016 | case WasmOp_i64_const: |
| 2017 | { |
| 2018 | uint64_t x = read64_ileb128(mod_ptr, code_i); |
| 2019 | if (unreachable_depth == 0) { |
| 2020 | opcodes[pc->opcode] = Op_const_64; |
| 2021 | pc->opcode += 1; |
| 2022 | operands[pc->operand + 0] = x & UINT32_MAX; |
| 2023 | operands[pc->operand + 1] = (x >> 32) & UINT32_MAX; |
| 2024 | pc->operand += 2; |
| 2025 | } |
| 2026 | } |
| 2027 | break; |
| 2028 | |
| 2029 | case WasmOp_f32_const: |
| 2030 | { |
| 2031 | uint32_t x; |
| 2032 | memcpy(&x, mod_ptr + *code_i, 4); |
| 2033 | *code_i += 4; |
| 2034 | if (unreachable_depth == 0) { |
| 2035 | opcodes[pc->opcode] = Op_const_32; |
| 2036 | pc->opcode += 1; |
| 2037 | operands[pc->operand] = x; |
| 2038 | pc->operand += 1; |
| 2039 | } |
| 2040 | } |
| 2041 | break; |
| 2042 | |
| 2043 | case WasmOp_f64_const: |
| 2044 | { |
| 2045 | uint64_t x; |
| 2046 | memcpy(&x, mod_ptr + *code_i, 8); |
| 2047 | *code_i += 8; |
| 2048 | if (unreachable_depth == 0) { |
| 2049 | opcodes[pc->opcode] = Op_const_64; |
| 2050 | pc->opcode += 1; |
| 2051 | operands[pc->operand + 0] = x & UINT32_MAX; |
| 2052 | operands[pc->operand + 1] = (x >> 32) & UINT32_MAX; |
| 2053 | pc->operand += 2; |
| 2054 | } |
| 2055 | } |
| 2056 | break; |
| 2057 | |
| 2058 | case WasmOp_i32_add: |
| 2059 | opcodes[pc->opcode] = Op_add_32; |
| 2060 | pc->opcode += 1; |
| 2061 | break; |
| 2062 | |
| 2063 | case WasmOp_i32_and: |
| 2064 | opcodes[pc->opcode] = Op_and_32; |
| 2065 | pc->opcode += 1; |
| 2066 | break; |
| 2067 | |
| 2068 | default: |
| 2069 | opcodes[pc->opcode + 0] = Op_wasm; |
| 2070 | opcodes[pc->opcode + 1] = opcode; |
| 2071 | pc->opcode += 2; |
| 2072 | break; |
| 2073 | |
| 2074 | case WasmOp_prefixed: |
| 2075 | switch (prefixed_opcode) { |
| 2076 | case WasmPrefixedOp_i32_trunc_sat_f32_s: |
| 2077 | case WasmPrefixedOp_i32_trunc_sat_f32_u: |
| 2078 | case WasmPrefixedOp_i32_trunc_sat_f64_s: |
| 2079 | case WasmPrefixedOp_i32_trunc_sat_f64_u: |
| 2080 | case WasmPrefixedOp_i64_trunc_sat_f32_s: |
| 2081 | case WasmPrefixedOp_i64_trunc_sat_f32_u: |
| 2082 | case WasmPrefixedOp_i64_trunc_sat_f64_s: |
| 2083 | case WasmPrefixedOp_i64_trunc_sat_f64_u: |
| 2084 | if (unreachable_depth == 0) { |
| 2085 | opcodes[pc->opcode + 0] = Op_wasm_prefixed; |
| 2086 | opcodes[pc->opcode + 1] = prefixed_opcode; |
| 2087 | pc->opcode += 2; |
| 2088 | } |
| 2089 | break; |
| 2090 | |
| 2091 | case WasmPrefixedOp_memory_copy: |
| 2092 | if (mod_ptr[*code_i + 0] != 0 || mod_ptr[*code_i + 1] != 0) |
| 2093 | panic("unexpected memory index"); |
| 2094 | *code_i += 2; |
| 2095 | if (unreachable_depth == 0) { |
| 2096 | opcodes[pc->opcode + 0] = Op_wasm_prefixed; |
| 2097 | opcodes[pc->opcode + 1] = prefixed_opcode; |
| 2098 | pc->opcode += 2; |
| 2099 | } |
| 2100 | break; |
| 2101 | |
| 2102 | case WasmPrefixedOp_memory_fill: |
| 2103 | if (mod_ptr[*code_i] != 0) panic("unexpected memory index"); |
| 2104 | *code_i += 1; |
| 2105 | if (unreachable_depth == 0) { |
| 2106 | opcodes[pc->opcode + 0] = Op_wasm_prefixed; |
| 2107 | opcodes[pc->opcode + 1] = prefixed_opcode; |
| 2108 | pc->opcode += 2; |
| 2109 | } |
| 2110 | break; |
| 2111 | |
| 2112 | default: panic("unreachable"); |
| 2113 | } |
| 2114 | break; |
| 2115 | } |
| 2116 | |
| 2117 | switch (opcode) { |
| 2118 | case WasmOp_unreachable: |
| 2119 | case WasmOp_return: |
| 2120 | case WasmOp_br: |
| 2121 | case WasmOp_br_table: |
| 2122 | if (unreachable_depth == 0) unreachable_depth = 1; |
| 2123 | break; |
| 2124 | |
| 2125 | default: |
| 2126 | break; |
| 2127 | } |
| 2128 | } |
| 2129 | } |
| 2130 | |
| 2131 | static void vm_push_u32(struct VirtualMachine *vm, uint32_t value) { |
| 2132 | vm->stack[vm->stack_top] = value; |
| 2133 | vm->stack_top += 1; |
| 2134 | } |
| 2135 | |
| 2136 | static void vm_push_i32(struct VirtualMachine *vm, int32_t value) { |
| 2137 | return vm_push_u32(vm, value); |
| 2138 | } |
| 2139 | |
| 2140 | static void vm_push_u64(struct VirtualMachine *vm, uint64_t value) { |
| 2141 | vm->stack[vm->stack_top] = value; |
| 2142 | vm->stack_top += 1; |
| 2143 | } |
| 2144 | |
| 2145 | static void vm_push_i64(struct VirtualMachine *vm, int64_t value) { |
| 2146 | return vm_push_u64(vm, value); |
| 2147 | } |
| 2148 | |
| 2149 | static void vm_push_f32(struct VirtualMachine *vm, float value) { |
| 2150 | uint32_t integer; |
| 2151 | memcpy(&integer, &value, 4); |
| 2152 | return vm_push_u32(vm, integer); |
| 2153 | } |
| 2154 | |
| 2155 | static void vm_push_f64(struct VirtualMachine *vm, double value) { |
| 2156 | uint64_t integer; |
| 2157 | memcpy(&integer, &value, 8); |
| 2158 | return vm_push_u64(vm, integer); |
| 2159 | } |
| 2160 | |
| 2161 | static uint32_t vm_pop_u32(struct VirtualMachine *vm) { |
| 2162 | vm->stack_top -= 1; |
| 2163 | return vm->stack[vm->stack_top]; |
| 2164 | } |
| 2165 | |
| 2166 | static int32_t vm_pop_i32(struct VirtualMachine *vm) { |
| 2167 | return vm_pop_u32(vm); |
| 2168 | } |
| 2169 | |
| 2170 | static uint64_t vm_pop_u64(struct VirtualMachine *vm) { |
| 2171 | vm->stack_top -= 1; |
| 2172 | return vm->stack[vm->stack_top]; |
| 2173 | } |
| 2174 | |
| 2175 | static int64_t vm_pop_i64(struct VirtualMachine *vm) { |
| 2176 | return vm_pop_u64(vm); |
| 2177 | } |
| 2178 | |
| 2179 | static float vm_pop_f32(struct VirtualMachine *vm) { |
| 2180 | uint32_t integer = vm_pop_u32(vm); |
| 2181 | float result; |
| 2182 | memcpy(&result, &integer, 4); |
| 2183 | return result; |
| 2184 | } |
| 2185 | |
| 2186 | static double vm_pop_f64(struct VirtualMachine *vm) { |
| 2187 | uint32_t integer = vm_pop_u64(vm); |
| 2188 | double result; |
| 2189 | memcpy(&result, &integer, 8); |
| 2190 | return result; |
| 2191 | } |
| 2192 | |
| 2193 | static void vm_callImport(struct VirtualMachine *vm, struct Import import) { |
| 2194 | switch (import.mod) { |
| 2195 | case ImpMod_wasi_snapshot_preview1: switch (import.name) { |
| 2196 | case ImpName_fd_prestat_get: |
| 2197 | { |
| 2198 | uint32_t buf = vm_pop_u32(vm); |
| 2199 | int32_t fd = vm_pop_i32(vm); |
| 2200 | vm_push_u32(vm, wasi_fd_prestat_get(vm, fd, buf)); |
| 2201 | } |
| 2202 | break; |
| 2203 | case ImpName_fd_prestat_dir_name: |
| 2204 | { |
| 2205 | uint32_t path_len = vm_pop_u32(vm); |
| 2206 | uint32_t path = vm_pop_u32(vm); |
| 2207 | int32_t fd = vm_pop_i32(vm); |
| 2208 | vm_push_u32(vm, wasi_fd_prestat_dir_name(vm, fd, path, path_len)); |
| 2209 | } |
| 2210 | break; |
| 2211 | case ImpName_fd_close: |
| 2212 | { |
| 2213 | int32_t fd = vm_pop_i32(vm); |
| 2214 | vm_push_u32(vm, wasi_fd_close(vm, fd)); |
| 2215 | } |
| 2216 | break; |
| 2217 | case ImpName_fd_read: |
| 2218 | { |
| 2219 | uint32_t nread = vm_pop_u32(vm); |
| 2220 | uint32_t iovs_len = vm_pop_u32(vm); |
| 2221 | uint32_t iovs = vm_pop_u32(vm); |
| 2222 | int32_t fd = vm_pop_i32(vm); |
| 2223 | vm_push_u32(vm, wasi_fd_read(vm, fd, iovs, iovs_len, nread)); |
| 2224 | } |
| 2225 | break; |
| 2226 | case ImpName_fd_filestat_get: |
| 2227 | { |
| 2228 | uint32_t buf = vm_pop_u32(vm); |
| 2229 | int32_t fd = vm_pop_i32(vm); |
| 2230 | vm_push_u32(vm, wasi_fd_filestat_get(vm, fd, buf)); |
| 2231 | } |
| 2232 | break; |
| 2233 | case ImpName_fd_filestat_set_size: |
| 2234 | { |
| 2235 | uint64_t size = vm_pop_u64(vm); |
| 2236 | int32_t fd = vm_pop_i32(vm); |
| 2237 | vm_push_u32(vm, wasi_fd_filestat_set_size(vm, fd, size)); |
| 2238 | } |
| 2239 | break; |
| 2240 | case ImpName_fd_filestat_set_times: |
| 2241 | { |
| 2242 | panic("unexpected call to fd_filestat_set_times"); |
| 2243 | } |
| 2244 | break; |
| 2245 | case ImpName_fd_fdstat_get: |
| 2246 | { |
| 2247 | uint32_t buf = vm_pop_u32(vm); |
| 2248 | int32_t fd = vm_pop_i32(vm); |
| 2249 | vm_push_u32(vm, wasi_fd_fdstat_get(vm, fd, buf)); |
| 2250 | } |
| 2251 | break; |
| 2252 | case ImpName_fd_readdir: |
| 2253 | { |
| 2254 | panic("TODO implement fd_readdir"); |
| 2255 | } |
| 2256 | break; |
| 2257 | case ImpName_fd_write: |
| 2258 | { |
| 2259 | uint32_t nwritten = vm_pop_u32(vm); |
| 2260 | uint32_t iovs_len = vm_pop_u32(vm); |
| 2261 | uint32_t iovs = vm_pop_u32(vm); |
| 2262 | int32_t fd = vm_pop_i32(vm); |
| 2263 | vm_push_u32(vm, wasi_fd_write(vm, fd, iovs, iovs_len, nwritten)); |
| 2264 | } |
| 2265 | break; |
| 2266 | case ImpName_fd_pwrite: |
| 2267 | { |
| 2268 | uint32_t nwritten = vm_pop_u32(vm); |
| 2269 | uint64_t offset = vm_pop_u64(vm); |
| 2270 | uint32_t iovs_len = vm_pop_u32(vm); |
| 2271 | uint32_t iovs = vm_pop_u32(vm); |
| 2272 | int32_t fd = vm_pop_i32(vm); |
| 2273 | vm_push_u32(vm, wasi_fd_pwrite(vm, fd, iovs, iovs_len, offset, nwritten)); |
| 2274 | } |
| 2275 | break; |
| 2276 | case ImpName_proc_exit: |
| 2277 | { |
| 2278 | uint32_t code = vm_pop_u32(vm); |
| 2279 | exit(code); |
| 2280 | } |
| 2281 | break; |
| 2282 | case ImpName_args_sizes_get: |
| 2283 | { |
| 2284 | uint32_t argv_buf_size = vm_pop_u32(vm); |
| 2285 | uint32_t argc = vm_pop_u32(vm); |
| 2286 | vm_push_u32(vm, wasi_args_sizes_get(vm, argc, argv_buf_size)); |
| 2287 | } |
| 2288 | break; |
| 2289 | case ImpName_args_get: |
| 2290 | { |
| 2291 | uint32_t argv_buf = vm_pop_u32(vm); |
| 2292 | uint32_t argv = vm_pop_u32(vm); |
| 2293 | vm_push_u32(vm, wasi_args_get(vm, argv, argv_buf)); |
| 2294 | } |
| 2295 | break; |
| 2296 | case ImpName_random_get: |
| 2297 | { |
| 2298 | uint32_t buf_len = vm_pop_u32(vm); |
| 2299 | uint32_t buf = vm_pop_u32(vm); |
| 2300 | vm_push_u32(vm, wasi_random_get(vm, buf, buf_len)); |
| 2301 | } |
| 2302 | break; |
| 2303 | case ImpName_environ_sizes_get: |
| 2304 | { |
| 2305 | panic("unexpected call to environ_sizes_get"); |
| 2306 | } |
| 2307 | break; |
| 2308 | case ImpName_environ_get: |
| 2309 | { |
| 2310 | panic("unexpected call to environ_get"); |
| 2311 | } |
| 2312 | break; |
| 2313 | case ImpName_path_filestat_get: |
| 2314 | { |
| 2315 | uint32_t buf = vm_pop_u32(vm); |
| 2316 | uint32_t path_len = vm_pop_u32(vm); |
| 2317 | uint32_t path = vm_pop_u32(vm); |
| 2318 | uint32_t flags = vm_pop_u32(vm); |
| 2319 | int32_t fd = vm_pop_i32(vm); |
| 2320 | vm_push_u32(vm, wasi_path_filestat_get(vm, fd, flags, path, path_len, buf)); |
| 2321 | } |
| 2322 | break; |
| 2323 | case ImpName_path_create_directory: |
| 2324 | { |
| 2325 | uint32_t path_len = vm_pop_u32(vm); |
| 2326 | uint32_t path = vm_pop_u32(vm); |
| 2327 | int32_t fd = vm_pop_i32(vm); |
| 2328 | vm_push_u32(vm, wasi_path_create_directory(vm, fd, path, path_len)); |
| 2329 | } |
| 2330 | break; |
| 2331 | case ImpName_path_rename: |
| 2332 | { |
| 2333 | uint32_t new_path_len = vm_pop_u32(vm); |
| 2334 | uint32_t new_path = vm_pop_u32(vm); |
| 2335 | int32_t new_fd = vm_pop_i32(vm); |
| 2336 | uint32_t old_path_len = vm_pop_u32(vm); |
| 2337 | uint32_t old_path = vm_pop_u32(vm); |
| 2338 | int32_t old_fd = vm_pop_i32(vm); |
| 2339 | vm_push_u32(vm, wasi_path_rename( |
| 2340 | vm, |
| 2341 | old_fd, |
| 2342 | old_path, |
| 2343 | old_path_len, |
| 2344 | new_fd, |
| 2345 | new_path, |
| 2346 | new_path_len |
| 2347 | )); |
| 2348 | } |
| 2349 | break; |
| 2350 | case ImpName_path_open: |
| 2351 | { |
| 2352 | uint32_t fd = vm_pop_u32(vm); |
| 2353 | uint32_t fs_flags = vm_pop_u32(vm); |
| 2354 | uint64_t fs_rights_inheriting = vm_pop_u64(vm); |
| 2355 | uint64_t fs_rights_base = vm_pop_u64(vm); |
| 2356 | uint32_t oflags = vm_pop_u32(vm); |
| 2357 | uint32_t path_len = vm_pop_u32(vm); |
| 2358 | uint32_t path = vm_pop_u32(vm); |
| 2359 | uint32_t dirflags = vm_pop_u32(vm); |
| 2360 | int32_t dirfd = vm_pop_i32(vm); |
| 2361 | vm_push_u32(vm, wasi_path_open( |
| 2362 | vm, |
| 2363 | dirfd, |
| 2364 | dirflags, |
| 2365 | path, |
| 2366 | path_len, |
| 2367 | oflags, |
| 2368 | fs_rights_base, |
| 2369 | fs_rights_inheriting, |
| 2370 | fs_flags, |
| 2371 | fd |
| 2372 | )); |
| 2373 | } |
| 2374 | break; |
| 2375 | case ImpName_path_remove_directory: |
| 2376 | { |
| 2377 | panic("unexpected call to path_remove_directory"); |
| 2378 | } |
| 2379 | break; |
| 2380 | case ImpName_path_unlink_file: |
| 2381 | { |
| 2382 | panic("unexpected call to path_unlink_file"); |
| 2383 | } |
| 2384 | break; |
| 2385 | case ImpName_clock_time_get: |
| 2386 | { |
| 2387 | uint32_t timestamp = vm_pop_u32(vm); |
| 2388 | uint64_t precision = vm_pop_u64(vm); |
| 2389 | uint32_t clock_id = vm_pop_u32(vm); |
| 2390 | vm_push_u32(vm, wasi_clock_time_get(vm, clock_id, precision, timestamp)); |
| 2391 | } |
| 2392 | break; |
| 2393 | case ImpName_fd_pread: |
| 2394 | { |
| 2395 | panic("unexpected call to fd_pread"); |
| 2396 | } |
| 2397 | break; |
| 2398 | case ImpName_debug: |
| 2399 | { |
| 2400 | uint64_t number = vm_pop_u64(vm); |
| 2401 | uint32_t text = vm_pop_u32(vm); |
| 2402 | wasi_debug(vm, text, number); |
| 2403 | } |
| 2404 | break; |
| 2405 | case ImpName_debug_slice: |
| 2406 | { |
| 2407 | uint32_t len = vm_pop_u32(vm); |
| 2408 | uint32_t ptr = vm_pop_u32(vm); |
| 2409 | wasi_debug_slice(vm, ptr, len); |
| 2410 | } |
| 2411 | break; |
| 2412 | } |
| 2413 | break; |
| 2414 | } |
| 2415 | } |
| 2416 | |
| 2417 | static void vm_call(struct VirtualMachine *vm, uint32_t fn_id) { |
| 2418 | if (fn_id < vm->imports_len) { |
| 2419 | struct Import imp = vm->imports[fn_id]; |
| 2420 | return vm_callImport(vm, imp); |
| 2421 | } |
| 2422 | uint32_t fn_idx = fn_id - vm->imports_len; |
| 2423 | struct Function *func = &vm->functions[fn_idx]; |
| 2424 | |
| 2425 | // Push zeroed locals to stack |
| 2426 | memset(&vm->stack[vm->stack_top], 0, func->locals_count * sizeof(uint64_t)); |
| 2427 | vm->stack_top += func->locals_count; |
| 2428 | |
| 2429 | vm_push_u32(vm, vm->pc.opcode); |
| 2430 | vm_push_u32(vm, vm->pc.operand); |
| 2431 | |
| 2432 | vm->pc = func->entry_pc; |
| 2433 | } |
| 2434 | |
| 2435 | static void vm_br_void(struct VirtualMachine *vm) { |
| 2436 | uint32_t stack_adjust = vm->operands[vm->pc.operand]; |
| 2437 | |
| 2438 | vm->stack_top -= stack_adjust; |
| 2439 | |
| 2440 | vm->pc.opcode = vm->operands[vm->pc.operand + 1]; |
| 2441 | vm->pc.operand = vm->operands[vm->pc.operand + 2]; |
| 2442 | } |
| 2443 | |
| 2444 | static void vm_br_u32(struct VirtualMachine *vm) { |
| 2445 | uint32_t stack_adjust = vm->operands[vm->pc.operand]; |
| 2446 | |
| 2447 | uint32_t result = vm_pop_u32(vm); |
| 2448 | vm->stack_top -= stack_adjust; |
| 2449 | vm_push_u32(vm, result); |
| 2450 | |
| 2451 | vm->pc.opcode = vm->operands[vm->pc.operand + 1]; |
| 2452 | vm->pc.operand = vm->operands[vm->pc.operand + 2]; |
| 2453 | } |
| 2454 | |
| 2455 | static void vm_br_u64(struct VirtualMachine *vm) { |
| 2456 | uint32_t stack_adjust = vm->operands[vm->pc.operand]; |
| 2457 | |
| 2458 | uint64_t result = vm_pop_u64(vm); |
| 2459 | vm->stack_top -= stack_adjust; |
| 2460 | vm_push_u64(vm, result); |
| 2461 | |
| 2462 | vm->pc.opcode = vm->operands[vm->pc.operand + 1]; |
| 2463 | vm->pc.operand = vm->operands[vm->pc.operand + 2]; |
| 2464 | } |
| 2465 | |
| 2466 | static void vm_return_void(struct VirtualMachine *vm) { |
| 2467 | uint32_t ret_pc_offset = vm->operands[vm->pc.operand + 0]; |
| 2468 | uint32_t stack_adjust = vm->operands[vm->pc.operand + 1]; |
| 2469 | |
| 2470 | vm->pc.opcode = vm->stack[vm->stack_top - ret_pc_offset]; |
| 2471 | vm->pc.operand = vm->stack[vm->stack_top - ret_pc_offset + 1]; |
| 2472 | |
| 2473 | vm->stack_top -= stack_adjust; |
| 2474 | } |
| 2475 | |
| 2476 | static void vm_return_u32(struct VirtualMachine *vm) { |
| 2477 | uint32_t ret_pc_offset = vm->operands[vm->pc.operand + 0]; |
| 2478 | uint32_t stack_adjust = vm->operands[vm->pc.operand + 1]; |
| 2479 | |
| 2480 | vm->pc.opcode = vm->stack[vm->stack_top - ret_pc_offset]; |
| 2481 | vm->pc.operand = vm->stack[vm->stack_top - ret_pc_offset + 1]; |
| 2482 | |
| 2483 | uint32_t result = vm_pop_u32(vm); |
| 2484 | vm->stack_top -= stack_adjust; |
| 2485 | vm_push_u32(vm, result); |
| 2486 | } |
| 2487 | |
| 2488 | static void vm_return_u64(struct VirtualMachine *vm) { |
| 2489 | uint32_t ret_pc_offset = vm->operands[vm->pc.operand + 0]; |
| 2490 | uint32_t stack_adjust = vm->operands[vm->pc.operand + 1]; |
| 2491 | |
| 2492 | vm->pc.opcode = vm->stack[vm->stack_top - ret_pc_offset]; |
| 2493 | vm->pc.operand = vm->stack[vm->stack_top - ret_pc_offset + 1]; |
| 2494 | |
| 2495 | uint64_t result = vm_pop_u64(vm); |
| 2496 | vm->stack_top -= stack_adjust; |
| 2497 | vm_push_u64(vm, result); |
| 2498 | } |
| 2499 | |
| 2500 | static void vm_run(struct VirtualMachine *vm) { |
| 2501 | uint8_t *opcodes = vm->opcodes; |
| 2502 | uint32_t *operands = vm->operands; |
| 2503 | struct ProgramCounter *pc = &vm->pc; |
| 2504 | for (;;) { |
| 2505 | enum Op op = opcodes[pc->opcode]; |
| 2506 | pc->opcode += 1; |
| 2507 | switch (op) { |
| 2508 | case Op_unreachable: |
| 2509 | panic("unreachable reached"); |
| 2510 | |
| 2511 | case Op_br_void: |
| 2512 | vm_br_void(vm); |
| 2513 | break; |
| 2514 | |
| 2515 | case Op_br_32: |
| 2516 | vm_br_u32(vm); |
| 2517 | break; |
| 2518 | |
| 2519 | case Op_br_64: |
| 2520 | vm_br_u64(vm); |
| 2521 | break; |
| 2522 | |
| 2523 | case Op_br_if_nez_void: |
| 2524 | if (vm_pop_u32(vm) != 0) { |
| 2525 | vm_br_void(vm); |
| 2526 | } else { |
| 2527 | pc->operand += 3; |
| 2528 | } |
| 2529 | break; |
| 2530 | |
| 2531 | case Op_br_if_nez_32: |
| 2532 | if (vm_pop_u32(vm) != 0) { |
| 2533 | vm_br_u32(vm); |
| 2534 | } else { |
| 2535 | pc->operand += 3; |
| 2536 | } |
| 2537 | break; |
| 2538 | |
| 2539 | case Op_br_if_nez_64: |
| 2540 | if (vm_pop_u32(vm) != 0) { |
| 2541 | vm_br_u64(vm); |
| 2542 | } else { |
| 2543 | pc->operand += 3; |
| 2544 | } |
| 2545 | break; |
| 2546 | |
| 2547 | case Op_br_if_eqz_void: |
| 2548 | if (vm_pop_u32(vm) == 0) { |
| 2549 | vm_br_void(vm); |
| 2550 | } else { |
| 2551 | pc->operand += 3; |
| 2552 | } |
| 2553 | break; |
| 2554 | |
| 2555 | case Op_br_if_eqz_32: |
| 2556 | if (vm_pop_u32(vm) == 0) { |
| 2557 | vm_br_u32(vm); |
| 2558 | } else { |
| 2559 | pc->operand += 3; |
| 2560 | } |
| 2561 | break; |
| 2562 | |
| 2563 | case Op_br_if_eqz_64: |
| 2564 | if (vm_pop_u32(vm) == 0) { |
| 2565 | vm_br_u64(vm); |
| 2566 | } else { |
| 2567 | pc->operand += 3; |
| 2568 | } |
| 2569 | break; |
| 2570 | |
| 2571 | case Op_br_table_void: |
| 2572 | { |
| 2573 | uint32_t index = min_u32(vm_pop_u32(vm), operands[pc->operand]); |
| 2574 | pc->operand += 1 + index * 3; |
| 2575 | vm_br_void(vm); |
| 2576 | } |
| 2577 | break; |
| 2578 | |
| 2579 | case Op_br_table_32: |
| 2580 | { |
| 2581 | uint32_t index = min_u32(vm_pop_u32(vm), operands[pc->operand]); |
| 2582 | pc->operand += 1 + index * 3; |
| 2583 | vm_br_u32(vm); |
| 2584 | } |
| 2585 | break; |
| 2586 | |
| 2587 | case Op_br_table_64: |
| 2588 | { |
| 2589 | uint32_t index = min_u32(vm_pop_u32(vm), operands[pc->operand]); |
| 2590 | pc->operand += 1 + index * 3; |
| 2591 | vm_br_u64(vm); |
| 2592 | } |
| 2593 | break; |
| 2594 | |
| 2595 | case Op_return_void: |
| 2596 | vm_return_void(vm); |
| 2597 | break; |
| 2598 | |
| 2599 | case Op_return_32: |
| 2600 | vm_return_u32(vm); |
| 2601 | break; |
| 2602 | |
| 2603 | case Op_return_64: |
| 2604 | vm_return_u64(vm); |
| 2605 | break; |
| 2606 | |
| 2607 | case Op_call: |
| 2608 | { |
| 2609 | uint32_t fn_id = operands[pc->operand]; |
| 2610 | pc->operand += 1; |
| 2611 | vm_call(vm, fn_id); |
| 2612 | } |
| 2613 | break; |
| 2614 | |
| 2615 | case Op_drop_32: |
| 2616 | case Op_drop_64: |
| 2617 | vm->stack_top -= 1; |
| 2618 | break; |
| 2619 | |
| 2620 | case Op_select_32: |
| 2621 | { |
| 2622 | uint32_t c = vm_pop_u32(vm); |
| 2623 | uint32_t b = vm_pop_u32(vm); |
| 2624 | uint32_t a = vm_pop_u32(vm); |
| 2625 | uint32_t result = (c != 0) ? a : b; |
| 2626 | vm_push_u32(vm, result); |
| 2627 | } |
| 2628 | break; |
| 2629 | |
| 2630 | case Op_select_64: |
| 2631 | { |
| 2632 | uint32_t c = vm_pop_u32(vm); |
| 2633 | uint64_t b = vm_pop_u64(vm); |
| 2634 | uint64_t a = vm_pop_u64(vm); |
| 2635 | uint64_t result = (c != 0) ? a : b; |
| 2636 | vm_push_u64(vm, result); |
| 2637 | } |
| 2638 | break; |
| 2639 | |
| 2640 | case Op_local_get_32: |
| 2641 | { |
| 2642 | uint64_t *local = &vm->stack[vm->stack_top - operands[pc->operand]]; |
| 2643 | pc->operand += 1; |
| 2644 | vm_push_u32(vm, *local); |
| 2645 | } |
| 2646 | break; |
| 2647 | |
| 2648 | case Op_local_get_64: |
| 2649 | { |
| 2650 | uint64_t *local = &vm->stack[vm->stack_top - operands[pc->operand]]; |
| 2651 | pc->operand += 1; |
| 2652 | vm_push_u64(vm, *local); |
| 2653 | } |
| 2654 | break; |
| 2655 | |
| 2656 | case Op_local_set_32: |
| 2657 | { |
| 2658 | uint64_t *local = &vm->stack[vm->stack_top - operands[pc->operand]]; |
| 2659 | pc->operand += 1; |
| 2660 | *local = vm_pop_u32(vm); |
| 2661 | } |
| 2662 | break; |
| 2663 | |
| 2664 | case Op_local_set_64: |
| 2665 | { |
| 2666 | uint64_t *local = &vm->stack[vm->stack_top - operands[pc->operand]]; |
| 2667 | pc->operand += 1; |
| 2668 | *local = vm_pop_u64(vm); |
| 2669 | } |
| 2670 | break; |
| 2671 | |
| 2672 | case Op_local_tee_32: |
| 2673 | case Op_local_tee_64: |
| 2674 | { |
| 2675 | uint64_t *local = &vm->stack[vm->stack_top - operands[pc->operand]]; |
| 2676 | pc->operand += 1; |
| 2677 | *local = vm->stack[vm->stack_top - 1]; |
| 2678 | } |
| 2679 | break; |
| 2680 | |
| 2681 | case Op_global_get_0_32: |
| 2682 | vm_push_u32(vm, vm->globals[0]); |
| 2683 | break; |
| 2684 | |
| 2685 | case Op_global_get_32: |
| 2686 | { |
| 2687 | uint32_t idx = operands[pc->operand]; |
| 2688 | pc->operand += 1; |
| 2689 | vm_push_u32(vm, vm->globals[idx]); |
| 2690 | } |
| 2691 | break; |
| 2692 | |
| 2693 | case Op_global_set_0_32: |
| 2694 | vm->globals[0] = vm_pop_u32(vm); |
| 2695 | break; |
| 2696 | |
| 2697 | case Op_global_set_32: |
| 2698 | { |
| 2699 | uint32_t idx = operands[pc->operand]; |
| 2700 | pc->operand += 1; |
| 2701 | vm->globals[idx] = vm_pop_u32(vm); |
| 2702 | } |
| 2703 | break; |
| 2704 | |
| 2705 | case Op_const_32: |
| 2706 | { |
| 2707 | uint32_t x = operands[pc->operand]; |
| 2708 | pc->operand += 1; |
| 2709 | vm_push_i32(vm, x); |
| 2710 | } |
| 2711 | break; |
| 2712 | |
| 2713 | case Op_const_64: |
| 2714 | { |
| 2715 | uint64_t x = ((uint64_t)operands[pc->operand]) | |
| 2716 | (((uint64_t)operands[pc->operand + 1]) << 32); |
| 2717 | pc->operand += 2; |
| 2718 | vm_push_i64(vm, x); |
| 2719 | } |
| 2720 | break; |
| 2721 | |
| 2722 | case Op_add_32: |
| 2723 | { |
| 2724 | uint32_t rhs = vm_pop_u32(vm); |
| 2725 | uint32_t lhs = vm_pop_u32(vm); |
| 2726 | vm_push_u32(vm, lhs + rhs); |
| 2727 | } |
| 2728 | break; |
| 2729 | |
| 2730 | case Op_and_32: |
| 2731 | { |
| 2732 | uint32_t rhs = vm_pop_u32(vm); |
| 2733 | uint32_t lhs = vm_pop_u32(vm); |
| 2734 | vm_push_u32(vm, lhs & rhs); |
| 2735 | } |
| 2736 | break; |
| 2737 | |
| 2738 | case Op_wasm: |
| 2739 | { |
| 2740 | enum WasmOp wasm_op = opcodes[pc->opcode]; |
| 2741 | pc->opcode += 1; |
| 2742 | switch (wasm_op) { |
| 2743 | case WasmOp_unreachable: |
| 2744 | case WasmOp_nop: |
| 2745 | case WasmOp_block: |
| 2746 | case WasmOp_loop: |
| 2747 | case WasmOp_if: |
| 2748 | case WasmOp_else: |
| 2749 | case WasmOp_end: |
| 2750 | case WasmOp_br: |
| 2751 | case WasmOp_br_if: |
| 2752 | case WasmOp_br_table: |
| 2753 | case WasmOp_return: |
| 2754 | case WasmOp_call: |
| 2755 | case WasmOp_drop: |
| 2756 | case WasmOp_select: |
| 2757 | case WasmOp_local_get: |
| 2758 | case WasmOp_local_set: |
| 2759 | case WasmOp_local_tee: |
| 2760 | case WasmOp_global_get: |
| 2761 | case WasmOp_global_set: |
| 2762 | case WasmOp_i32_const: |
| 2763 | case WasmOp_i64_const: |
| 2764 | case WasmOp_f32_const: |
| 2765 | case WasmOp_f64_const: |
| 2766 | case WasmOp_i32_add: |
| 2767 | case WasmOp_i32_and: |
| 2768 | case WasmOp_i32_reinterpret_f32: |
| 2769 | case WasmOp_i64_reinterpret_f64: |
| 2770 | case WasmOp_f32_reinterpret_i32: |
| 2771 | case WasmOp_f64_reinterpret_i64: |
| 2772 | case WasmOp_prefixed: |
| 2773 | panic("not produced by decodeCode"); |
| 2774 | break; |
| 2775 | |
| 2776 | case WasmOp_call_indirect: |
| 2777 | { |
| 2778 | uint32_t fn_id = vm->table[vm_pop_u32(vm)]; |
| 2779 | vm_call(vm, fn_id); |
| 2780 | } |
| 2781 | break; |
| 2782 | case WasmOp_i32_load: |
| 2783 | { |
| 2784 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2785 | pc->operand += 1; |
| 2786 | vm_push_u32(vm, read_u32_le(vm->memory + offset)); |
| 2787 | } |
| 2788 | break; |
| 2789 | case WasmOp_i64_load: |
| 2790 | { |
| 2791 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2792 | pc->operand += 1; |
| 2793 | vm_push_u64(vm, read_u64_le(vm->memory + offset)); |
| 2794 | } |
| 2795 | break; |
| 2796 | case WasmOp_f32_load: |
| 2797 | { |
| 2798 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2799 | pc->operand += 1; |
| 2800 | uint32_t integer = read_u32_le(vm->memory + offset); |
| 2801 | vm_push_u32(vm, integer); |
| 2802 | } |
| 2803 | break; |
| 2804 | case WasmOp_f64_load: |
| 2805 | { |
| 2806 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2807 | pc->operand += 1; |
| 2808 | uint64_t integer = read_u64_le(vm->memory + offset); |
| 2809 | vm_push_u64(vm, integer); |
| 2810 | } |
| 2811 | break; |
| 2812 | case WasmOp_i32_load8_s: |
| 2813 | { |
| 2814 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2815 | pc->operand += 1; |
| 2816 | vm_push_i32(vm, (int8_t)vm->memory[offset]); |
| 2817 | } |
| 2818 | break; |
| 2819 | case WasmOp_i32_load8_u: |
| 2820 | { |
| 2821 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2822 | pc->operand += 1; |
| 2823 | vm_push_u32(vm, vm->memory[offset]); |
| 2824 | } |
| 2825 | break; |
| 2826 | case WasmOp_i32_load16_s: |
| 2827 | { |
| 2828 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2829 | pc->operand += 1; |
| 2830 | int16_t integer = read_i16_le(vm->memory + offset); |
| 2831 | vm_push_i32(vm, integer); |
| 2832 | } |
| 2833 | break; |
| 2834 | case WasmOp_i32_load16_u: |
| 2835 | { |
| 2836 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2837 | pc->operand += 1; |
| 2838 | uint16_t integer = read_u16_le(vm->memory + offset); |
| 2839 | vm_push_u32(vm, integer); |
| 2840 | } |
| 2841 | break; |
| 2842 | case WasmOp_i64_load8_s: |
| 2843 | { |
| 2844 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2845 | pc->operand += 1; |
| 2846 | vm_push_i64(vm, (int8_t)vm->memory[offset]); |
| 2847 | } |
| 2848 | break; |
| 2849 | case WasmOp_i64_load8_u: |
| 2850 | { |
| 2851 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2852 | pc->operand += 1; |
| 2853 | vm_push_u64(vm, vm->memory[offset]); |
| 2854 | } |
| 2855 | break; |
| 2856 | case WasmOp_i64_load16_s: |
| 2857 | { |
| 2858 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2859 | pc->operand += 1; |
| 2860 | int16_t integer = read_i16_le(vm->memory + offset); |
| 2861 | vm_push_i64(vm, integer); |
| 2862 | } |
| 2863 | break; |
| 2864 | case WasmOp_i64_load16_u: |
| 2865 | { |
| 2866 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2867 | pc->operand += 1; |
| 2868 | uint16_t integer = read_u16_le(vm->memory + offset); |
| 2869 | vm_push_u64(vm, integer); |
| 2870 | } |
| 2871 | break; |
| 2872 | case WasmOp_i64_load32_s: |
| 2873 | { |
| 2874 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2875 | pc->operand += 1; |
| 2876 | int32_t integer = read_i32_le(vm->memory + offset); |
| 2877 | vm_push_i64(vm, integer); |
| 2878 | } |
| 2879 | break; |
| 2880 | case WasmOp_i64_load32_u: |
| 2881 | { |
| 2882 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2883 | pc->operand += 1; |
| 2884 | uint32_t integer = read_u32_le(vm->memory + offset); |
| 2885 | vm_push_u64(vm, integer); |
| 2886 | } |
| 2887 | break; |
| 2888 | case WasmOp_i32_store: |
| 2889 | { |
| 2890 | uint32_t operand = vm_pop_u32(vm); |
| 2891 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2892 | pc->operand += 1; |
| 2893 | write_u32_le(vm->memory + offset, operand); |
| 2894 | } |
| 2895 | break; |
| 2896 | case WasmOp_i64_store: |
| 2897 | { |
| 2898 | uint64_t operand = vm_pop_u64(vm); |
| 2899 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2900 | pc->operand += 1; |
| 2901 | write_u64_le(vm->memory + offset, operand); |
| 2902 | } |
| 2903 | break; |
| 2904 | case WasmOp_f32_store: |
| 2905 | { |
| 2906 | uint32_t integer = vm_pop_u32(vm); |
| 2907 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2908 | pc->operand += 1; |
| 2909 | write_u32_le(vm->memory + offset, integer); |
| 2910 | } |
| 2911 | break; |
| 2912 | case WasmOp_f64_store: |
| 2913 | { |
| 2914 | uint64_t integer = vm_pop_u64(vm); |
| 2915 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2916 | pc->operand += 1; |
| 2917 | write_u64_le(vm->memory + offset, integer); |
| 2918 | } |
| 2919 | break; |
| 2920 | case WasmOp_i32_store8: |
| 2921 | { |
| 2922 | uint8_t small = vm_pop_u32(vm); |
| 2923 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2924 | pc->operand += 1; |
| 2925 | vm->memory[offset] = small; |
| 2926 | } |
| 2927 | break; |
| 2928 | case WasmOp_i32_store16: |
| 2929 | { |
| 2930 | uint16_t small = vm_pop_u32(vm); |
| 2931 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2932 | pc->operand += 1; |
| 2933 | write_u16_le(vm->memory + offset, small); |
| 2934 | } |
| 2935 | break; |
| 2936 | case WasmOp_i64_store8: |
| 2937 | { |
| 2938 | uint8_t operand = vm_pop_u64(vm); |
| 2939 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2940 | pc->operand += 1; |
| 2941 | vm->memory[offset] = operand; |
| 2942 | } |
| 2943 | break; |
| 2944 | case WasmOp_i64_store16: |
| 2945 | { |
| 2946 | uint16_t small = vm_pop_u64(vm); |
| 2947 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2948 | pc->operand += 1; |
| 2949 | write_u16_le(vm->memory + offset, small); |
| 2950 | } |
| 2951 | break; |
| 2952 | case WasmOp_i64_store32: |
| 2953 | { |
| 2954 | uint32_t small = vm_pop_u64(vm); |
| 2955 | uint32_t offset = operands[pc->operand] + vm_pop_u32(vm); |
| 2956 | pc->operand += 1; |
| 2957 | write_u32_le(vm->memory + offset, small); |
| 2958 | } |
| 2959 | break; |
| 2960 | case WasmOp_memory_size: |
| 2961 | { |
| 2962 | uint32_t page_count = vm->memory_len / wasm_page_size; |
| 2963 | vm_push_u32(vm, page_count); |
| 2964 | } |
| 2965 | break; |
| 2966 | case WasmOp_memory_grow: |
| 2967 | { |
| 2968 | uint32_t page_count = vm_pop_u32(vm); |
| 2969 | uint32_t old_page_count = vm->memory_len / wasm_page_size; |
| 2970 | uint32_t new_len = vm->memory_len + page_count * wasm_page_size; |
| 2971 | if (new_len > vm->memory_len) { |
| 2972 | vm_push_i32(vm, -1); |
| 2973 | } else { |
| 2974 | vm->memory_len = new_len; |
| 2975 | vm_push_u32(vm, old_page_count); |
| 2976 | } |
| 2977 | } |
| 2978 | break; |
| 2979 | case WasmOp_i32_eqz: |
| 2980 | { |
| 2981 | uint32_t lhs = vm_pop_u32(vm); |
| 2982 | vm_push_u32(vm, lhs == 0); |
| 2983 | } |
| 2984 | break; |
| 2985 | case WasmOp_i32_eq: |
| 2986 | { |
| 2987 | uint32_t rhs = vm_pop_u32(vm); |
| 2988 | uint32_t lhs = vm_pop_u32(vm); |
| 2989 | vm_push_u32(vm, lhs == rhs); |
| 2990 | } |
| 2991 | break; |
| 2992 | case WasmOp_i32_ne: |
| 2993 | { |
| 2994 | uint32_t rhs = vm_pop_u32(vm); |
| 2995 | uint32_t lhs = vm_pop_u32(vm); |
| 2996 | vm_push_u32(vm, lhs != rhs); |
| 2997 | } |
| 2998 | break; |
| 2999 | case WasmOp_i32_lt_s: |
| 3000 | { |
| 3001 | int32_t rhs = vm_pop_i32(vm); |
| 3002 | int32_t lhs = vm_pop_i32(vm); |
| 3003 | vm_push_u32(vm, lhs < rhs); |
| 3004 | } |
| 3005 | break; |
| 3006 | case WasmOp_i32_lt_u: |
| 3007 | { |
| 3008 | uint32_t rhs = vm_pop_u32(vm); |
| 3009 | uint32_t lhs = vm_pop_u32(vm); |
| 3010 | vm_push_u32(vm, lhs < rhs); |
| 3011 | } |
| 3012 | break; |
| 3013 | case WasmOp_i32_gt_s: |
| 3014 | { |
| 3015 | int32_t rhs = vm_pop_i32(vm); |
| 3016 | int32_t lhs = vm_pop_i32(vm); |
| 3017 | vm_push_u32(vm, lhs > rhs); |
| 3018 | } |
| 3019 | break; |
| 3020 | case WasmOp_i32_gt_u: |
| 3021 | { |
| 3022 | uint32_t rhs = vm_pop_u32(vm); |
| 3023 | uint32_t lhs = vm_pop_u32(vm); |
| 3024 | vm_push_u32(vm, lhs > rhs); |
| 3025 | } |
| 3026 | break; |
| 3027 | case WasmOp_i32_le_s: |
| 3028 | { |
| 3029 | int32_t rhs = vm_pop_i32(vm); |
| 3030 | int32_t lhs = vm_pop_i32(vm); |
| 3031 | vm_push_u32(vm, lhs <= rhs); |
| 3032 | } |
| 3033 | break; |
| 3034 | case WasmOp_i32_le_u: |
| 3035 | { |
| 3036 | uint32_t rhs = vm_pop_u32(vm); |
| 3037 | uint32_t lhs = vm_pop_u32(vm); |
| 3038 | vm_push_u32(vm, lhs <= rhs); |
| 3039 | } |
| 3040 | break; |
| 3041 | case WasmOp_i32_ge_s: |
| 3042 | { |
| 3043 | int32_t rhs = vm_pop_i32(vm); |
| 3044 | int32_t lhs = vm_pop_i32(vm); |
| 3045 | vm_push_u32(vm, lhs >= rhs); |
| 3046 | } |
| 3047 | break; |
| 3048 | case WasmOp_i32_ge_u: |
| 3049 | { |
| 3050 | uint32_t rhs = vm_pop_u32(vm); |
| 3051 | uint32_t lhs = vm_pop_u32(vm); |
| 3052 | vm_push_u32(vm, lhs >= rhs); |
| 3053 | } |
| 3054 | break; |
| 3055 | case WasmOp_i64_eqz: |
| 3056 | { |
| 3057 | uint64_t lhs = vm_pop_u64(vm); |
| 3058 | vm_push_u32(vm, lhs == 0); |
| 3059 | } |
| 3060 | break; |
| 3061 | case WasmOp_i64_eq: |
| 3062 | { |
| 3063 | uint64_t rhs = vm_pop_u64(vm); |
| 3064 | uint64_t lhs = vm_pop_u64(vm); |
| 3065 | vm_push_u32(vm, lhs == rhs); |
| 3066 | } |
| 3067 | break; |
| 3068 | case WasmOp_i64_ne: |
| 3069 | { |
| 3070 | uint64_t rhs = vm_pop_u64(vm); |
| 3071 | uint64_t lhs = vm_pop_u64(vm); |
| 3072 | vm_push_u32(vm, lhs != rhs); |
| 3073 | } |
| 3074 | break; |
| 3075 | case WasmOp_i64_lt_s: |
| 3076 | { |
| 3077 | int64_t rhs = vm_pop_i64(vm); |
| 3078 | int64_t lhs = vm_pop_i64(vm); |
| 3079 | vm_push_u32(vm, lhs < rhs); |
| 3080 | } |
| 3081 | break; |
| 3082 | case WasmOp_i64_lt_u: |
| 3083 | { |
| 3084 | uint64_t rhs = vm_pop_u64(vm); |
| 3085 | uint64_t lhs = vm_pop_u64(vm); |
| 3086 | vm_push_u32(vm, lhs < rhs); |
| 3087 | } |
| 3088 | break; |
| 3089 | case WasmOp_i64_gt_s: |
| 3090 | { |
| 3091 | int64_t rhs = vm_pop_i64(vm); |
| 3092 | int64_t lhs = vm_pop_i64(vm); |
| 3093 | vm_push_u32(vm, lhs > rhs); |
| 3094 | } |
| 3095 | break; |
| 3096 | case WasmOp_i64_gt_u: |
| 3097 | { |
| 3098 | uint64_t rhs = vm_pop_u64(vm); |
| 3099 | uint64_t lhs = vm_pop_u64(vm); |
| 3100 | vm_push_u32(vm, lhs > rhs); |
| 3101 | } |
| 3102 | break; |
| 3103 | case WasmOp_i64_le_s: |
| 3104 | { |
| 3105 | int64_t rhs = vm_pop_i64(vm); |
| 3106 | int64_t lhs = vm_pop_i64(vm); |
| 3107 | vm_push_u32(vm, lhs <= rhs); |
| 3108 | } |
| 3109 | break; |
| 3110 | case WasmOp_i64_le_u: |
| 3111 | { |
| 3112 | uint64_t rhs = vm_pop_u64(vm); |
| 3113 | uint64_t lhs = vm_pop_u64(vm); |
| 3114 | vm_push_u32(vm, lhs <= rhs); |
| 3115 | } |
| 3116 | break; |
| 3117 | case WasmOp_i64_ge_s: |
| 3118 | { |
| 3119 | int64_t rhs = vm_pop_i64(vm); |
| 3120 | int64_t lhs = vm_pop_i64(vm); |
| 3121 | vm_push_u32(vm, lhs >= rhs); |
| 3122 | } |
| 3123 | break; |
| 3124 | case WasmOp_i64_ge_u: |
| 3125 | { |
| 3126 | uint64_t rhs = vm_pop_u64(vm); |
| 3127 | uint64_t lhs = vm_pop_u64(vm); |
| 3128 | vm_push_u32(vm, lhs >= rhs); |
| 3129 | } |
| 3130 | break; |
| 3131 | case WasmOp_f32_eq: |
| 3132 | { |
| 3133 | float rhs = vm_pop_f32(vm); |
| 3134 | float lhs = vm_pop_f32(vm); |
| 3135 | vm_push_u32(vm, lhs == rhs); |
| 3136 | } |
| 3137 | break; |
| 3138 | case WasmOp_f32_ne: |
| 3139 | { |
| 3140 | float rhs = vm_pop_f32(vm); |
| 3141 | float lhs = vm_pop_f32(vm); |
| 3142 | vm_push_u32(vm, lhs != rhs); |
| 3143 | } |
| 3144 | break; |
| 3145 | case WasmOp_f32_lt: |
| 3146 | { |
| 3147 | float rhs = vm_pop_f32(vm); |
| 3148 | float lhs = vm_pop_f32(vm); |
| 3149 | vm_push_u32(vm, lhs < rhs); |
| 3150 | } |
| 3151 | break; |
| 3152 | case WasmOp_f32_gt: |
| 3153 | { |
| 3154 | float rhs = vm_pop_f32(vm); |
| 3155 | float lhs = vm_pop_f32(vm); |
| 3156 | vm_push_u32(vm, lhs > rhs); |
| 3157 | } |
| 3158 | break; |
| 3159 | case WasmOp_f32_le: |
| 3160 | { |
| 3161 | float rhs = vm_pop_f32(vm); |
| 3162 | float lhs = vm_pop_f32(vm); |
| 3163 | vm_push_u32(vm, lhs <= rhs); |
| 3164 | } |
| 3165 | break; |
| 3166 | case WasmOp_f32_ge: |
| 3167 | { |
| 3168 | float rhs = vm_pop_f32(vm); |
| 3169 | float lhs = vm_pop_f32(vm); |
| 3170 | vm_push_u32(vm, lhs >= rhs); |
| 3171 | } |
| 3172 | break; |
| 3173 | case WasmOp_f64_eq: |
| 3174 | { |
| 3175 | double rhs = vm_pop_f64(vm); |
| 3176 | double lhs = vm_pop_f64(vm); |
| 3177 | vm_push_u32(vm, lhs == rhs); |
| 3178 | } |
| 3179 | break; |
| 3180 | case WasmOp_f64_ne: |
| 3181 | { |
| 3182 | double rhs = vm_pop_f64(vm); |
| 3183 | double lhs = vm_pop_f64(vm); |
| 3184 | vm_push_u32(vm, lhs != rhs); |
| 3185 | } |
| 3186 | break; |
| 3187 | case WasmOp_f64_lt: |
| 3188 | { |
| 3189 | double rhs = vm_pop_f64(vm); |
| 3190 | double lhs = vm_pop_f64(vm); |
| 3191 | vm_push_u32(vm, lhs <= rhs); |
| 3192 | } |
| 3193 | break; |
| 3194 | case WasmOp_f64_gt: |
| 3195 | { |
| 3196 | double rhs = vm_pop_f64(vm); |
| 3197 | double lhs = vm_pop_f64(vm); |
| 3198 | vm_push_u32(vm, lhs > rhs); |
| 3199 | } |
| 3200 | break; |
| 3201 | case WasmOp_f64_le: |
| 3202 | { |
| 3203 | double rhs = vm_pop_f64(vm); |
| 3204 | double lhs = vm_pop_f64(vm); |
| 3205 | vm_push_u32(vm, lhs <= rhs); |
| 3206 | } |
| 3207 | break; |
| 3208 | case WasmOp_f64_ge: |
| 3209 | { |
| 3210 | double rhs = vm_pop_f64(vm); |
| 3211 | double lhs = vm_pop_f64(vm); |
| 3212 | vm_push_u32(vm, lhs >= rhs); |
| 3213 | } |
| 3214 | break; |
| 3215 | |
| 3216 | case WasmOp_i32_clz: |
| 3217 | { |
| 3218 | uint32_t operand = vm_pop_u32(vm); |
| 3219 | uint32_t result = (operand == 0) ? 32 : __builtin_clz(operand); |
| 3220 | vm_push_u32(vm, result); |
| 3221 | } |
| 3222 | break; |
| 3223 | case WasmOp_i32_ctz: |
| 3224 | { |
| 3225 | uint32_t operand = vm_pop_u32(vm); |
| 3226 | uint32_t result = (operand == 0) ? 32 : __builtin_ctz(operand); |
| 3227 | vm_push_u32(vm, result); |
| 3228 | } |
| 3229 | break; |
| 3230 | case WasmOp_i32_popcnt: |
| 3231 | { |
| 3232 | uint32_t operand = vm_pop_u32(vm); |
| 3233 | uint32_t result = __builtin_popcount(operand); |
| 3234 | vm_push_u32(vm, result); |
| 3235 | } |
| 3236 | break; |
| 3237 | case WasmOp_i32_sub: |
| 3238 | { |
| 3239 | uint32_t rhs = vm_pop_u32(vm); |
| 3240 | uint32_t lhs = vm_pop_u32(vm); |
| 3241 | vm_push_u32(vm, lhs - rhs); |
| 3242 | } |
| 3243 | break; |
| 3244 | case WasmOp_i32_mul: |
| 3245 | { |
| 3246 | uint32_t rhs = vm_pop_u32(vm); |
| 3247 | uint32_t lhs = vm_pop_u32(vm); |
| 3248 | vm_push_u32(vm, lhs * rhs); |
| 3249 | } |
| 3250 | break; |
| 3251 | case WasmOp_i32_div_s: |
| 3252 | { |
| 3253 | int32_t rhs = vm_pop_i32(vm); |
| 3254 | int32_t lhs = vm_pop_i32(vm); |
| 3255 | vm_push_i32(vm, lhs / rhs); |
| 3256 | } |
| 3257 | break; |
| 3258 | case WasmOp_i32_div_u: |
| 3259 | { |
| 3260 | uint32_t rhs = vm_pop_u32(vm); |
| 3261 | uint32_t lhs = vm_pop_u32(vm); |
| 3262 | vm_push_u32(vm, lhs / rhs); |
| 3263 | } |
| 3264 | break; |
| 3265 | case WasmOp_i32_rem_s: |
| 3266 | { |
| 3267 | int32_t rhs = vm_pop_i32(vm); |
| 3268 | int32_t lhs = vm_pop_i32(vm); |
| 3269 | vm_push_i32(vm, lhs % rhs); |
| 3270 | } |
| 3271 | break; |
| 3272 | case WasmOp_i32_rem_u: |
| 3273 | { |
| 3274 | uint32_t rhs = vm_pop_u32(vm); |
| 3275 | uint32_t lhs = vm_pop_u32(vm); |
| 3276 | vm_push_u32(vm, lhs % rhs); |
| 3277 | } |
| 3278 | break; |
| 3279 | case WasmOp_i32_or: |
| 3280 | { |
| 3281 | uint32_t rhs = vm_pop_u32(vm); |
| 3282 | uint32_t lhs = vm_pop_u32(vm); |
| 3283 | vm_push_u32(vm, lhs | rhs); |
| 3284 | } |
| 3285 | break; |
| 3286 | case WasmOp_i32_xor: |
| 3287 | { |
| 3288 | uint32_t rhs = vm_pop_u32(vm); |
| 3289 | uint32_t lhs = vm_pop_u32(vm); |
| 3290 | vm_push_u32(vm, lhs ^ rhs); |
| 3291 | } |
| 3292 | break; |
| 3293 | case WasmOp_i32_shl: |
| 3294 | { |
| 3295 | uint32_t rhs = vm_pop_u32(vm); |
| 3296 | uint32_t lhs = vm_pop_u32(vm); |
| 3297 | vm_push_u32(vm, lhs << rhs); |
| 3298 | } |
| 3299 | break; |
| 3300 | case WasmOp_i32_shr_s: |
| 3301 | { |
| 3302 | uint32_t rhs = vm_pop_u32(vm); |
| 3303 | int32_t lhs = vm_pop_i32(vm); |
| 3304 | vm_push_i32(vm, lhs >> rhs); |
| 3305 | } |
| 3306 | break; |
| 3307 | case WasmOp_i32_shr_u: |
| 3308 | { |
| 3309 | uint32_t rhs = vm_pop_u32(vm); |
| 3310 | uint32_t lhs = vm_pop_u32(vm); |
| 3311 | vm_push_u32(vm, lhs >> rhs); |
| 3312 | } |
| 3313 | break; |
| 3314 | case WasmOp_i32_rotl: |
| 3315 | { |
| 3316 | uint32_t rhs = vm_pop_u32(vm); |
| 3317 | uint32_t lhs = vm_pop_u32(vm); |
| 3318 | vm_push_u32(vm, rotl32(lhs, rhs)); |
| 3319 | } |
| 3320 | break; |
| 3321 | case WasmOp_i32_rotr: |
| 3322 | { |
| 3323 | uint32_t rhs = vm_pop_u32(vm); |
| 3324 | uint32_t lhs = vm_pop_u32(vm); |
| 3325 | vm_push_u32(vm, rotr32(lhs, rhs )); |
| 3326 | } |
| 3327 | break; |
| 3328 | |
| 3329 | case WasmOp_i64_clz: |
| 3330 | { |
| 3331 | uint64_t operand = vm_pop_u64(vm); |
| 3332 | uint64_t result = (operand == 0) ? 64 : __builtin_clzll(operand); |
| 3333 | vm_push_u64(vm, result); |
| 3334 | } |
| 3335 | break; |
| 3336 | case WasmOp_i64_ctz: |
| 3337 | { |
| 3338 | uint64_t operand = vm_pop_u64(vm); |
| 3339 | uint64_t result = (operand == 0) ? 64 : __builtin_ctzll(operand); |
| 3340 | vm_push_u64(vm, result); |
| 3341 | } |
| 3342 | break; |
| 3343 | case WasmOp_i64_popcnt: |
| 3344 | { |
| 3345 | uint64_t operand = vm_pop_u64(vm); |
| 3346 | uint64_t result = __builtin_popcountll(operand); |
| 3347 | vm_push_u64(vm, result); |
| 3348 | } |
| 3349 | break; |
| 3350 | case WasmOp_i64_add: |
| 3351 | { |
| 3352 | uint64_t rhs = vm_pop_u64(vm); |
| 3353 | uint64_t lhs = vm_pop_u64(vm); |
| 3354 | vm_push_u64(vm, lhs + rhs); |
| 3355 | } |
| 3356 | break; |
| 3357 | case WasmOp_i64_sub: |
| 3358 | { |
| 3359 | uint64_t rhs = vm_pop_u64(vm); |
| 3360 | uint64_t lhs = vm_pop_u64(vm); |
| 3361 | vm_push_u64(vm, lhs - rhs); |
| 3362 | } |
| 3363 | break; |
| 3364 | case WasmOp_i64_mul: |
| 3365 | { |
| 3366 | uint64_t rhs = vm_pop_u64(vm); |
| 3367 | uint64_t lhs = vm_pop_u64(vm); |
| 3368 | vm_push_u64(vm, lhs * rhs); |
| 3369 | } |
| 3370 | break; |
| 3371 | case WasmOp_i64_div_s: |
| 3372 | { |
| 3373 | int64_t rhs = vm_pop_i64(vm); |
| 3374 | int64_t lhs = vm_pop_i64(vm); |
| 3375 | vm_push_i64(vm, lhs / rhs); |
| 3376 | } |
| 3377 | break; |
| 3378 | case WasmOp_i64_div_u: |
| 3379 | { |
| 3380 | uint64_t rhs = vm_pop_u64(vm); |
| 3381 | uint64_t lhs = vm_pop_u64(vm); |
| 3382 | vm_push_u64(vm, lhs / rhs); |
| 3383 | } |
| 3384 | break; |
| 3385 | case WasmOp_i64_rem_s: |
| 3386 | { |
| 3387 | int64_t rhs = vm_pop_i64(vm); |
| 3388 | int64_t lhs = vm_pop_i64(vm); |
| 3389 | vm_push_i64(vm, lhs % rhs); |
| 3390 | } |
| 3391 | break; |
| 3392 | case WasmOp_i64_rem_u: |
| 3393 | { |
| 3394 | uint64_t rhs = vm_pop_u64(vm); |
| 3395 | uint64_t lhs = vm_pop_u64(vm); |
| 3396 | vm_push_u64(vm, lhs % rhs); |
| 3397 | } |
| 3398 | break; |
| 3399 | case WasmOp_i64_and: |
| 3400 | { |
| 3401 | uint64_t rhs = vm_pop_u64(vm); |
| 3402 | uint64_t lhs = vm_pop_u64(vm); |
| 3403 | vm_push_u64(vm, lhs & rhs); |
| 3404 | } |
| 3405 | break; |
| 3406 | case WasmOp_i64_or: |
| 3407 | { |
| 3408 | uint64_t rhs = vm_pop_u64(vm); |
| 3409 | uint64_t lhs = vm_pop_u64(vm); |
| 3410 | vm_push_u64(vm, lhs | rhs); |
| 3411 | } |
| 3412 | break; |
| 3413 | case WasmOp_i64_xor: |
| 3414 | { |
| 3415 | uint64_t rhs = vm_pop_u64(vm); |
| 3416 | uint64_t lhs = vm_pop_u64(vm); |
| 3417 | vm_push_u64(vm, lhs ^ rhs); |
| 3418 | } |
| 3419 | break; |
| 3420 | case WasmOp_i64_shl: |
| 3421 | { |
| 3422 | uint64_t rhs = vm_pop_u64(vm); |
| 3423 | uint64_t lhs = vm_pop_u64(vm); |
| 3424 | vm_push_u64(vm, lhs << rhs); |
| 3425 | } |
| 3426 | break; |
| 3427 | case WasmOp_i64_shr_s: |
| 3428 | { |
| 3429 | uint64_t rhs = vm_pop_u64(vm); |
| 3430 | int64_t lhs = vm_pop_i64(vm); |
| 3431 | vm_push_i64(vm, lhs >> rhs); |
| 3432 | } |
| 3433 | break; |
| 3434 | case WasmOp_i64_shr_u: |
| 3435 | { |
| 3436 | uint64_t rhs = vm_pop_u64(vm); |
| 3437 | uint64_t lhs = vm_pop_u64(vm); |
| 3438 | vm_push_u64(vm, lhs >> rhs); |
| 3439 | } |
| 3440 | break; |
| 3441 | case WasmOp_i64_rotl: |
| 3442 | { |
| 3443 | uint64_t rhs = vm_pop_u64(vm); |
| 3444 | uint64_t lhs = vm_pop_u64(vm); |
| 3445 | vm_push_u64(vm, rotl64(lhs, rhs )); |
| 3446 | } |
| 3447 | break; |
| 3448 | case WasmOp_i64_rotr: |
| 3449 | { |
| 3450 | uint64_t rhs = vm_pop_u64(vm); |
| 3451 | uint64_t lhs = vm_pop_u64(vm); |
| 3452 | vm_push_u64(vm, rotr64(lhs, rhs )); |
| 3453 | } |
| 3454 | break; |
| 3455 | |
| 3456 | case WasmOp_f32_abs: |
| 3457 | { |
| 3458 | vm_push_f32(vm, fabsf(vm_pop_f32(vm))); |
| 3459 | } |
| 3460 | break; |
| 3461 | case WasmOp_f32_neg: |
| 3462 | { |
| 3463 | vm_push_f32(vm, -vm_pop_f32(vm)); |
| 3464 | } |
| 3465 | break; |
| 3466 | case WasmOp_f32_ceil: |
| 3467 | { |
| 3468 | vm_push_f32(vm, ceilf(vm_pop_f32(vm))); |
| 3469 | } |
| 3470 | break; |
| 3471 | case WasmOp_f32_floor: |
| 3472 | { |
| 3473 | vm_push_f32(vm, floorf(vm_pop_f32(vm))); |
| 3474 | } |
| 3475 | break; |
| 3476 | case WasmOp_f32_trunc: |
| 3477 | { |
| 3478 | vm_push_f32(vm, truncf(vm_pop_f32(vm))); |
| 3479 | } |
| 3480 | break; |
| 3481 | case WasmOp_f32_nearest: |
| 3482 | { |
| 3483 | vm_push_f32(vm, roundf(vm_pop_f32(vm))); |
| 3484 | } |
| 3485 | break; |
| 3486 | case WasmOp_f32_sqrt: |
| 3487 | { |
| 3488 | vm_push_f32(vm, sqrtf(vm_pop_f32(vm))); |
| 3489 | } |
| 3490 | break; |
| 3491 | case WasmOp_f32_add: |
| 3492 | { |
| 3493 | float rhs = vm_pop_f32(vm); |
| 3494 | float lhs = vm_pop_f32(vm); |
| 3495 | vm_push_f32(vm, lhs + rhs); |
| 3496 | } |
| 3497 | break; |
| 3498 | case WasmOp_f32_sub: |
| 3499 | { |
| 3500 | float rhs = vm_pop_f32(vm); |
| 3501 | float lhs = vm_pop_f32(vm); |
| 3502 | vm_push_f32(vm, lhs - rhs); |
| 3503 | } |
| 3504 | break; |
| 3505 | case WasmOp_f32_mul: |
| 3506 | { |
| 3507 | float rhs = vm_pop_f32(vm); |
| 3508 | float lhs = vm_pop_f32(vm); |
| 3509 | vm_push_f32(vm, lhs * rhs); |
| 3510 | } |
| 3511 | break; |
| 3512 | case WasmOp_f32_div: |
| 3513 | { |
| 3514 | float rhs = vm_pop_f32(vm); |
| 3515 | float lhs = vm_pop_f32(vm); |
| 3516 | vm_push_f32(vm, lhs / rhs); |
| 3517 | } |
| 3518 | break; |
| 3519 | case WasmOp_f32_min: |
| 3520 | { |
| 3521 | float rhs = vm_pop_f32(vm); |
| 3522 | float lhs = vm_pop_f32(vm); |
| 3523 | vm_push_f32(vm, (lhs < rhs) ? lhs : rhs); |
| 3524 | } |
| 3525 | break; |
| 3526 | case WasmOp_f32_max: |
| 3527 | { |
| 3528 | float rhs = vm_pop_f32(vm); |
| 3529 | float lhs = vm_pop_f32(vm); |
| 3530 | vm_push_f32(vm, (lhs > rhs) ? lhs : rhs); |
| 3531 | } |
| 3532 | break; |
| 3533 | case WasmOp_f32_copysign: |
| 3534 | { |
| 3535 | float rhs = vm_pop_f32(vm); |
| 3536 | float lhs = vm_pop_f32(vm); |
| 3537 | vm_push_f32(vm, copysignf(lhs, rhs)); |
| 3538 | } |
| 3539 | break; |
| 3540 | case WasmOp_f64_abs: |
| 3541 | { |
| 3542 | vm_push_f64(vm, fabs(vm_pop_f64(vm))); |
| 3543 | } |
| 3544 | break; |
| 3545 | case WasmOp_f64_neg: |
| 3546 | { |
| 3547 | vm_push_f64(vm, -vm_pop_f64(vm)); |
| 3548 | } |
| 3549 | break; |
| 3550 | case WasmOp_f64_ceil: |
| 3551 | { |
| 3552 | vm_push_f64(vm, ceil(vm_pop_f64(vm))); |
| 3553 | } |
| 3554 | break; |
| 3555 | case WasmOp_f64_floor: |
| 3556 | { |
| 3557 | vm_push_f64(vm, floor(vm_pop_f64(vm))); |
| 3558 | } |
| 3559 | break; |
| 3560 | case WasmOp_f64_trunc: |
| 3561 | { |
| 3562 | vm_push_f64(vm, trunc(vm_pop_f64(vm))); |
| 3563 | } |
| 3564 | break; |
| 3565 | case WasmOp_f64_nearest: |
| 3566 | { |
| 3567 | vm_push_f64(vm, round(vm_pop_f64(vm))); |
| 3568 | } |
| 3569 | break; |
| 3570 | case WasmOp_f64_sqrt: |
| 3571 | { |
| 3572 | vm_push_f64(vm, sqrt(vm_pop_f64(vm))); |
| 3573 | } |
| 3574 | break; |
| 3575 | case WasmOp_f64_add: |
| 3576 | { |
| 3577 | double rhs = vm_pop_f64(vm); |
| 3578 | double lhs = vm_pop_f64(vm); |
| 3579 | vm_push_f64(vm, lhs + rhs); |
| 3580 | } |
| 3581 | break; |
| 3582 | case WasmOp_f64_sub: |
| 3583 | { |
| 3584 | double rhs = vm_pop_f64(vm); |
| 3585 | double lhs = vm_pop_f64(vm); |
| 3586 | vm_push_f64(vm, lhs - rhs); |
| 3587 | } |
| 3588 | break; |
| 3589 | case WasmOp_f64_mul: |
| 3590 | { |
| 3591 | double rhs = vm_pop_f64(vm); |
| 3592 | double lhs = vm_pop_f64(vm); |
| 3593 | vm_push_f64(vm, lhs * rhs); |
| 3594 | } |
| 3595 | break; |
| 3596 | case WasmOp_f64_div: |
| 3597 | { |
| 3598 | double rhs = vm_pop_f64(vm); |
| 3599 | double lhs = vm_pop_f64(vm); |
| 3600 | vm_push_f64(vm, lhs / rhs); |
| 3601 | } |
| 3602 | break; |
| 3603 | case WasmOp_f64_min: |
| 3604 | { |
| 3605 | double rhs = vm_pop_f64(vm); |
| 3606 | double lhs = vm_pop_f64(vm); |
| 3607 | vm_push_f64(vm, (lhs < rhs) ? lhs : rhs); |
| 3608 | } |
| 3609 | break; |
| 3610 | case WasmOp_f64_max: |
| 3611 | { |
| 3612 | double rhs = vm_pop_f64(vm); |
| 3613 | double lhs = vm_pop_f64(vm); |
| 3614 | vm_push_f64(vm, (lhs > rhs) ? lhs : rhs); |
| 3615 | } |
| 3616 | break; |
| 3617 | case WasmOp_f64_copysign: |
| 3618 | { |
| 3619 | double rhs = vm_pop_f64(vm); |
| 3620 | double lhs = vm_pop_f64(vm); |
| 3621 | vm_push_f64(vm, copysign(lhs, rhs)); |
| 3622 | } |
| 3623 | break; |
| 3624 | |
| 3625 | case WasmOp_i32_wrap_i64: |
| 3626 | { |
| 3627 | uint64_t operand = vm_pop_u64(vm); |
| 3628 | vm_push_u32(vm, operand); |
| 3629 | } |
| 3630 | break; |
| 3631 | case WasmOp_i32_trunc_f32_s: |
| 3632 | { |
| 3633 | float operand = vm_pop_f32(vm); |
| 3634 | vm_push_i32(vm, truncf(operand)); |
| 3635 | } |
| 3636 | break; |
| 3637 | case WasmOp_i32_trunc_f32_u: |
| 3638 | { |
| 3639 | float operand = vm_pop_f32(vm); |
| 3640 | vm_push_u32(vm, truncf(operand)); |
| 3641 | } |
| 3642 | break; |
| 3643 | case WasmOp_i32_trunc_f64_s: |
| 3644 | { |
| 3645 | double operand = vm_pop_f64(vm); |
| 3646 | vm_push_i32(vm, trunc(operand)); |
| 3647 | } |
| 3648 | break; |
| 3649 | case WasmOp_i32_trunc_f64_u: |
| 3650 | { |
| 3651 | double operand = vm_pop_f64(vm); |
| 3652 | vm_push_u32(vm, trunc(operand)); |
| 3653 | } |
| 3654 | break; |
| 3655 | case WasmOp_i64_extend_i32_s: |
| 3656 | { |
| 3657 | int32_t operand = vm_pop_i32(vm); |
| 3658 | vm_push_i64(vm, operand); |
| 3659 | } |
| 3660 | break; |
| 3661 | case WasmOp_i64_extend_i32_u: |
| 3662 | { |
| 3663 | uint64_t operand = vm_pop_u64(vm); |
| 3664 | vm_push_u64(vm, operand); |
| 3665 | } |
| 3666 | break; |
| 3667 | case WasmOp_i64_trunc_f32_s: |
| 3668 | { |
| 3669 | float operand = vm_pop_f32(vm); |
| 3670 | vm_push_i64(vm, truncf(operand)); |
| 3671 | } |
| 3672 | break; |
| 3673 | case WasmOp_i64_trunc_f32_u: |
| 3674 | { |
| 3675 | float operand = vm_pop_f32(vm); |
| 3676 | vm_push_u64(vm, truncf(operand)); |
| 3677 | } |
| 3678 | break; |
| 3679 | case WasmOp_i64_trunc_f64_s: |
| 3680 | { |
| 3681 | double operand = vm_pop_f64(vm); |
| 3682 | vm_push_i64(vm, trunc(operand)); |
| 3683 | } |
| 3684 | break; |
| 3685 | case WasmOp_i64_trunc_f64_u: |
| 3686 | { |
| 3687 | double operand = vm_pop_f64(vm); |
| 3688 | vm_push_u64(vm, trunc(operand)); |
| 3689 | } |
| 3690 | break; |
| 3691 | case WasmOp_f32_convert_i32_s: |
| 3692 | { |
| 3693 | vm_push_f32(vm, vm_pop_i32(vm)); |
| 3694 | } |
| 3695 | break; |
| 3696 | case WasmOp_f32_convert_i32_u: |
| 3697 | { |
| 3698 | vm_push_f32(vm, vm_pop_u32(vm)); |
| 3699 | } |
| 3700 | break; |
| 3701 | case WasmOp_f32_convert_i64_s: |
| 3702 | { |
| 3703 | vm_push_f32(vm, vm_pop_i64(vm)); |
| 3704 | } |
| 3705 | break; |
| 3706 | case WasmOp_f32_convert_i64_u: |
| 3707 | { |
| 3708 | vm_push_f32(vm, vm_pop_u64(vm)); |
| 3709 | } |
| 3710 | break; |
| 3711 | case WasmOp_f32_demote_f64: |
| 3712 | { |
| 3713 | vm_push_f32(vm, vm_pop_f64(vm)); |
| 3714 | } |
| 3715 | break; |
| 3716 | case WasmOp_f64_convert_i32_s: |
| 3717 | { |
| 3718 | vm_push_f64(vm, vm_pop_i32(vm)); |
| 3719 | } |
| 3720 | break; |
| 3721 | case WasmOp_f64_convert_i32_u: |
| 3722 | { |
| 3723 | vm_push_f64(vm, vm_pop_u32(vm)); |
| 3724 | } |
| 3725 | break; |
| 3726 | case WasmOp_f64_convert_i64_s: |
| 3727 | { |
| 3728 | vm_push_f64(vm, vm_pop_i64(vm)); |
| 3729 | } |
| 3730 | break; |
| 3731 | case WasmOp_f64_convert_i64_u: |
| 3732 | { |
| 3733 | vm_push_f64(vm, vm_pop_u64(vm)); |
| 3734 | } |
| 3735 | break; |
| 3736 | case WasmOp_f64_promote_f32: |
| 3737 | { |
| 3738 | vm_push_f64(vm, vm_pop_f32(vm)); |
| 3739 | } |
| 3740 | break; |
| 3741 | |
| 3742 | case WasmOp_i32_extend8_s: |
| 3743 | { |
| 3744 | int8_t operand = vm_pop_i32(vm); |
| 3745 | vm_push_i32(vm, operand); |
| 3746 | } |
| 3747 | break; |
| 3748 | case WasmOp_i32_extend16_s: |
| 3749 | { |
| 3750 | int16_t operand = vm_pop_i32(vm); |
| 3751 | vm_push_i32(vm, operand); |
| 3752 | } |
| 3753 | break; |
| 3754 | case WasmOp_i64_extend8_s: |
| 3755 | { |
| 3756 | int8_t operand = vm_pop_i64(vm); |
| 3757 | vm_push_i64(vm, operand); |
| 3758 | } |
| 3759 | break; |
| 3760 | case WasmOp_i64_extend16_s: |
| 3761 | { |
| 3762 | int16_t operand = vm_pop_i64(vm); |
| 3763 | vm_push_i64(vm, operand); |
| 3764 | } |
| 3765 | break; |
| 3766 | case WasmOp_i64_extend32_s: |
| 3767 | { |
| 3768 | int32_t operand = vm_pop_i64(vm); |
| 3769 | vm_push_i64(vm, operand); |
| 3770 | } |
| 3771 | break; |
| 3772 | |
| 3773 | default: |
| 3774 | panic("unreachable"); |
| 3775 | } |
| 3776 | } |
| 3777 | break; |
| 3778 | |
| 3779 | case Op_wasm_prefixed: |
| 3780 | { |
| 3781 | enum WasmPrefixedOp wasm_prefixed_op = opcodes[pc->opcode]; |
| 3782 | pc->opcode += 1; |
| 3783 | switch (wasm_prefixed_op) { |
| 3784 | case WasmPrefixedOp_i32_trunc_sat_f32_s: |
| 3785 | panic("unreachable"); |
| 3786 | case WasmPrefixedOp_i32_trunc_sat_f32_u: |
| 3787 | panic("unreachable"); |
| 3788 | case WasmPrefixedOp_i32_trunc_sat_f64_s: |
| 3789 | panic("unreachable"); |
| 3790 | case WasmPrefixedOp_i32_trunc_sat_f64_u: |
| 3791 | panic("unreachable"); |
| 3792 | case WasmPrefixedOp_i64_trunc_sat_f32_s: |
| 3793 | panic("unreachable"); |
| 3794 | case WasmPrefixedOp_i64_trunc_sat_f32_u: |
| 3795 | panic("unreachable"); |
| 3796 | case WasmPrefixedOp_i64_trunc_sat_f64_s: |
| 3797 | panic("unreachable"); |
| 3798 | case WasmPrefixedOp_i64_trunc_sat_f64_u: |
| 3799 | panic("unreachable"); |
| 3800 | case WasmPrefixedOp_memory_init: |
| 3801 | panic("unreachable"); |
| 3802 | case WasmPrefixedOp_data_drop: |
| 3803 | panic("unreachable"); |
| 3804 | |
| 3805 | case WasmPrefixedOp_memory_copy: |
| 3806 | { |
| 3807 | uint32_t n = vm_pop_u32(vm); |
| 3808 | uint32_t src = vm_pop_u32(vm); |
| 3809 | uint32_t dest = vm_pop_u32(vm); |
| 3810 | assert(dest + n <= vm->memory_len); |
| 3811 | assert(src + n <= vm->memory_len); |
| 3812 | assert(src + n <= dest || dest + n <= src); // overlapping |
| 3813 | memcpy(vm->memory + dest, vm->memory + src, n); |
| 3814 | } |
| 3815 | break; |
| 3816 | |
| 3817 | case WasmPrefixedOp_memory_fill: |
| 3818 | { |
| 3819 | uint32_t n = vm_pop_u32(vm); |
| 3820 | uint8_t value = vm_pop_u32(vm); |
| 3821 | uint32_t dest = vm_pop_u32(vm); |
| 3822 | assert(dest + n <= vm->memory_len); |
| 3823 | memset(vm->memory + dest, value, n); |
| 3824 | } |
| 3825 | break; |
| 3826 | |
| 3827 | case WasmPrefixedOp_table_init: panic("unreachable"); |
| 3828 | case WasmPrefixedOp_elem_drop: panic("unreachable"); |
| 3829 | case WasmPrefixedOp_table_copy: panic("unreachable"); |
| 3830 | case WasmPrefixedOp_table_grow: panic("unreachable"); |
| 3831 | case WasmPrefixedOp_table_size: panic("unreachable"); |
| 3832 | case WasmPrefixedOp_table_fill: panic("unreachable"); |
| 3833 | default: panic("unreachable"); |
| 3834 | } |
| 3835 | } |
| 3836 | break; |
| 3837 | |
| 3838 | } |
| 3839 | } |
| 3840 | } |
| 3841 | |
| 3842 | int main(int argc, char **argv) { |
| 3843 | char *memory = mmap( NULL, max_memory, PROT_READ | PROT_WRITE, MAP_PRIVATE | MAP_ANON, -1, 0); |
| 3844 | |
| 3845 | const char *zig_lib_dir_path = argv[1]; |
| 3846 | const char *zig_cache_dir_path = argv[2]; |
| 3847 | const size_t vm_argv_start = 3; |
| 3848 | const char *wasm_file = argv[vm_argv_start]; |
| 3849 | |
| 3850 | const struct ByteSlice mod = read_file_alloc(wasm_file); |
| 3851 | |
| 3852 | int cwd = err_wrap("opening cwd", open(".", O_DIRECTORY|O_RDONLY|O_CLOEXEC|O_PATH)); |
| 3853 | mkdir(zig_cache_dir_path, 0666); |
| 3854 | int cache_dir = err_wrap("opening cache dir", open(zig_cache_dir_path, O_DIRECTORY|O_RDONLY|O_CLOEXEC|O_PATH)); |
| 3855 | int zig_lib_dir = err_wrap("opening zig lib dir", open(zig_lib_dir_path, O_DIRECTORY|O_RDONLY|O_CLOEXEC|O_PATH)); |
| 3856 | |
| 3857 | add_preopen(0, "stdin", STDIN_FILENO); |
| 3858 | add_preopen(1, "stdout", STDOUT_FILENO); |
| 3859 | add_preopen(2, "stderr", STDERR_FILENO); |
| 3860 | add_preopen(3, ".", cwd); |
| 3861 | add_preopen(4, "/cache", cache_dir); |
| 3862 | add_preopen(5, "/lib", zig_lib_dir); |
| 3863 | |
| 3864 | uint32_t i = 0; |
| 3865 | |
| 3866 | if (mod.ptr[0] != 0 || mod.ptr[1] != 'a' || mod.ptr[2] != 's' || mod.ptr[3] != 'm') { |
| 3867 | panic("bad magic"); |
| 3868 | } |
| 3869 | i += 4; |
| 3870 | |
| 3871 | uint32_t version = read_u32_le(mod.ptr + i); |
| 3872 | i += 4; |
| 3873 | if (version != 1) panic("bad wasm version"); |
| 3874 | |
| 3875 | uint32_t section_starts[13]; |
| 3876 | memset(§ion_starts, 0, 4 * 13); |
| 3877 | |
| 3878 | while (i < mod.len) { |
| 3879 | uint8_t section_id = mod.ptr[i]; |
| 3880 | i += 1; |
| 3881 | uint32_t section_len = read32_uleb128(mod.ptr, &i); |
| 3882 | section_starts[section_id] = i; |
| 3883 | i += section_len; |
| 3884 | } |
| 3885 | |
| 3886 | // Map type indexes to offsets into the module. |
| 3887 | struct TypeInfo *types; |
| 3888 | { |
| 3889 | i = section_starts[Section_type]; |
| 3890 | uint32_t types_len = read32_uleb128(mod.ptr, &i); |
| 3891 | types = arena_alloc(sizeof(struct TypeInfo) * types_len); |
| 3892 | for (size_t type_i = 0; type_i < types_len; type_i += 1) { |
| 3893 | struct TypeInfo *info = &types[type_i]; |
| 3894 | if (mod.ptr[i] != 0x60) panic("bad type byte"); |
| 3895 | i += 1; |
| 3896 | |
| 3897 | info->param_count = read32_uleb128(mod.ptr, &i); |
| 3898 | info->param_types = 0; |
| 3899 | for (uint32_t param_i = 0; param_i < info->param_count; param_i += 1) { |
| 3900 | int64_t param_type = read64_ileb128(mod.ptr, &i); |
| 3901 | switch (param_type) { |
| 3902 | case -1: case -3: bs_unset(&info->param_types, param_i); break; |
| 3903 | case -2: case -4: bs_set(&info->param_types, param_i); break; |
| 3904 | default: panic("unexpected param type"); |
| 3905 | } |
| 3906 | } |
| 3907 | |
| 3908 | info->result_count = read32_uleb128(mod.ptr, &i); |
| 3909 | info->result_types = 0; |
| 3910 | for (uint32_t result_i = 0; result_i < info->result_count; result_i += 1) { |
| 3911 | int64_t result_type = read64_ileb128(mod.ptr, &i); |
| 3912 | switch (result_type) { |
| 3913 | case -1: case -3: bs_unset(&info->result_types, result_i); break; |
| 3914 | case -2: case -4: bs_set(&info->result_types, result_i); break; |
| 3915 | default: panic("unexpected result type"); |
| 3916 | } |
| 3917 | } |
| 3918 | } |
| 3919 | } |
| 3920 | |
| 3921 | // Count the imported functions so we can correct function references. |
| 3922 | struct Import *imports; |
| 3923 | uint32_t imports_len; |
| 3924 | { |
| 3925 | i = section_starts[Section_import]; |
| 3926 | imports_len = read32_uleb128(mod.ptr, &i); |
| 3927 | imports = arena_alloc(sizeof(struct Import) * imports_len); |
| 3928 | for (size_t imp_i = 0; imp_i < imports_len; imp_i += 1) { |
| 3929 | struct Import *imp = &imports[imp_i]; |
| 3930 | |
| 3931 | struct ByteSlice mod_name = read_name(mod.ptr, &i); |
| 3932 | if (mod_name.len == strlen("wasi_snapshot_preview1") && |
| 3933 | memcmp(mod_name.ptr, "wasi_snapshot_preview1", mod_name.len) == 0) { |
| 3934 | imp->mod = ImpMod_wasi_snapshot_preview1; |
| 3935 | } else panic("unknown import module"); |
| 3936 | |
| 3937 | struct ByteSlice sym_name = read_name(mod.ptr, &i); |
| 3938 | if (sym_name.len == strlen("args_get") && |
| 3939 | memcmp(sym_name.ptr, "args_get", sym_name.len) == 0) { |
| 3940 | imp->name = ImpName_args_get; |
| 3941 | } else if (sym_name.len == strlen("args_sizes_get") && |
| 3942 | memcmp(sym_name.ptr, "args_sizes_get", sym_name.len) == 0) { |
| 3943 | imp->name = ImpName_args_sizes_get; |
| 3944 | } else if (sym_name.len == strlen("clock_time_get") && |
| 3945 | memcmp(sym_name.ptr, "clock_time_get", sym_name.len) == 0) { |
| 3946 | imp->name = ImpName_clock_time_get; |
| 3947 | } else if (sym_name.len == strlen("debug") && |
| 3948 | memcmp(sym_name.ptr, "debug", sym_name.len) == 0) { |
| 3949 | imp->name = ImpName_debug; |
| 3950 | } else if (sym_name.len == strlen("debug_slice") && |
| 3951 | memcmp(sym_name.ptr, "debug_slice", sym_name.len) == 0) { |
| 3952 | imp->name = ImpName_debug_slice; |
| 3953 | } else if (sym_name.len == strlen("environ_get") && |
| 3954 | memcmp(sym_name.ptr, "environ_get", sym_name.len) == 0) { |
| 3955 | imp->name = ImpName_environ_get; |
| 3956 | } else if (sym_name.len == strlen("environ_sizes_get") && |
| 3957 | memcmp(sym_name.ptr, "environ_sizes_get", sym_name.len) == 0) { |
| 3958 | imp->name = ImpName_environ_sizes_get; |
| 3959 | } else if (sym_name.len == strlen("fd_close") && |
| 3960 | memcmp(sym_name.ptr, "fd_close", sym_name.len) == 0) { |
| 3961 | imp->name = ImpName_fd_close; |
| 3962 | } else if (sym_name.len == strlen("fd_fdstat_get") && |
| 3963 | memcmp(sym_name.ptr, "fd_fdstat_get", sym_name.len) == 0) { |
| 3964 | imp->name = ImpName_fd_fdstat_get; |
| 3965 | } else if (sym_name.len == strlen("fd_filestat_get") && |
| 3966 | memcmp(sym_name.ptr, "fd_filestat_get", sym_name.len) == 0) { |
| 3967 | imp->name = ImpName_fd_filestat_get; |
| 3968 | } else if (sym_name.len == strlen("fd_filestat_set_size") && |
| 3969 | memcmp(sym_name.ptr, "fd_filestat_set_size", sym_name.len) == 0) { |
| 3970 | imp->name = ImpName_fd_filestat_set_size; |
| 3971 | } else if (sym_name.len == strlen("fd_filestat_set_times") && |
| 3972 | memcmp(sym_name.ptr, "fd_filestat_set_times", sym_name.len) == 0) { |
| 3973 | imp->name = ImpName_fd_filestat_set_times; |
| 3974 | } else if (sym_name.len == strlen("fd_pread") && |
| 3975 | memcmp(sym_name.ptr, "fd_pread", sym_name.len) == 0) { |
| 3976 | imp->name = ImpName_fd_pread; |
| 3977 | } else if (sym_name.len == strlen("fd_prestat_dir_name") && |
| 3978 | memcmp(sym_name.ptr, "fd_prestat_dir_name", sym_name.len) == 0) { |
| 3979 | imp->name = ImpName_fd_prestat_dir_name; |
| 3980 | } else if (sym_name.len == strlen("fd_prestat_get") && |
| 3981 | memcmp(sym_name.ptr, "fd_prestat_get", sym_name.len) == 0) { |
| 3982 | imp->name = ImpName_fd_prestat_get; |
| 3983 | } else if (sym_name.len == strlen("fd_pwrite") && |
| 3984 | memcmp(sym_name.ptr, "fd_pwrite", sym_name.len) == 0) { |
| 3985 | imp->name = ImpName_fd_pwrite; |
| 3986 | } else if (sym_name.len == strlen("fd_read") && |
| 3987 | memcmp(sym_name.ptr, "fd_read", sym_name.len) == 0) { |
| 3988 | imp->name = ImpName_fd_read; |
| 3989 | } else if (sym_name.len == strlen("fd_readdir") && |
| 3990 | memcmp(sym_name.ptr, "fd_readdir", sym_name.len) == 0) { |
| 3991 | imp->name = ImpName_fd_readdir; |
| 3992 | } else if (sym_name.len == strlen("fd_write") && |
| 3993 | memcmp(sym_name.ptr, "fd_write", sym_name.len) == 0) { |
| 3994 | imp->name = ImpName_fd_write; |
| 3995 | } else if (sym_name.len == strlen("path_create_directory") && |
| 3996 | memcmp(sym_name.ptr, "path_create_directory", sym_name.len) == 0) { |
| 3997 | imp->name = ImpName_path_create_directory; |
| 3998 | } else if (sym_name.len == strlen("path_filestat_get") && |
| 3999 | memcmp(sym_name.ptr, "path_filestat_get", sym_name.len) == 0) { |
| 4000 | imp->name = ImpName_path_filestat_get; |
| 4001 | } else if (sym_name.len == strlen("path_open") && |
| 4002 | memcmp(sym_name.ptr, "path_open", sym_name.len) == 0) { |
| 4003 | imp->name = ImpName_path_open; |
| 4004 | } else if (sym_name.len == strlen("path_remove_directory") && |
| 4005 | memcmp(sym_name.ptr, "path_remove_directory", sym_name.len) == 0) { |
| 4006 | imp->name = ImpName_path_remove_directory; |
| 4007 | } else if (sym_name.len == strlen("path_rename") && |
| 4008 | memcmp(sym_name.ptr, "path_rename", sym_name.len) == 0) { |
| 4009 | imp->name = ImpName_path_rename; |
| 4010 | } else if (sym_name.len == strlen("path_unlink_file") && |
| 4011 | memcmp(sym_name.ptr, "path_unlink_file", sym_name.len) == 0) { |
| 4012 | imp->name = ImpName_path_unlink_file; |
| 4013 | } else if (sym_name.len == strlen("proc_exit") && |
| 4014 | memcmp(sym_name.ptr, "proc_exit", sym_name.len) == 0) { |
| 4015 | imp->name = ImpName_proc_exit; |
| 4016 | } else if (sym_name.len == strlen("random_get") && |
| 4017 | memcmp(sym_name.ptr, "random_get", sym_name.len) == 0) { |
| 4018 | imp->name = ImpName_random_get; |
| 4019 | } else panic("unknown import name"); |
| 4020 | |
| 4021 | uint32_t desc = read32_uleb128(mod.ptr, &i); |
| 4022 | if (desc != 0) panic("external kind not function"); |
| 4023 | imp->type_idx = read32_uleb128(mod.ptr, &i); |
| 4024 | } |
| 4025 | } |
| 4026 | |
| 4027 | // Find _start in the exports |
| 4028 | uint32_t start_fn_idx; |
| 4029 | { |
| 4030 | i = section_starts[Section_export]; |
| 4031 | uint32_t count = read32_uleb128(mod.ptr, &i); |
| 4032 | for (; count > 0; count -= 1) { |
| 4033 | struct ByteSlice name = read_name(mod.ptr, &i); |
| 4034 | uint32_t desc = read32_uleb128(mod.ptr, &i); |
| 4035 | start_fn_idx = read32_uleb128(mod.ptr, &i); |
| 4036 | if (desc == 0 && name.len == strlen("_start") && |
| 4037 | memcmp(name.ptr, "_start", name.len) == 0) |
| 4038 | { |
| 4039 | break; |
| 4040 | } |
| 4041 | } |
| 4042 | if (count == 0) panic("_start symbol not found"); |
| 4043 | } |
| 4044 | |
| 4045 | // Map function indexes to offsets into the module and type index. |
| 4046 | struct Function *functions; |
| 4047 | uint32_t functions_len; |
| 4048 | { |
| 4049 | i = section_starts[Section_function]; |
| 4050 | functions_len = read32_uleb128(mod.ptr, &i); |
| 4051 | functions = arena_alloc(sizeof(struct Function) * functions_len); |
| 4052 | for (size_t func_i = 0; func_i < functions_len; func_i += 1) { |
| 4053 | struct Function *func = &functions[func_i]; |
| 4054 | func->type_idx = read32_uleb128(mod.ptr, &i); |
| 4055 | } |
| 4056 | } |
| 4057 | |
| 4058 | // Allocate and initialize globals. |
| 4059 | uint64_t *globals; |
| 4060 | { |
| 4061 | i = section_starts[Section_global]; |
| 4062 | uint32_t globals_len = read32_uleb128(mod.ptr, &i); |
| 4063 | globals = arena_alloc(sizeof(uint64_t) * globals_len); |
| 4064 | for (size_t glob_i = 0; glob_i < globals_len; glob_i += 1) { |
| 4065 | uint64_t *global = &globals[glob_i]; |
| 4066 | uint32_t content_type = read32_uleb128(mod.ptr, &i); |
| 4067 | uint32_t mutability = read32_uleb128(mod.ptr, &i); |
| 4068 | if (mutability != 1) panic("expected mutable global"); |
| 4069 | if (content_type != 0x7f) panic("unexpected content type"); |
| 4070 | uint8_t opcode = mod.ptr[i]; |
| 4071 | i += 1; |
| 4072 | if (opcode != WasmOp_i32_const) panic("expected i32_const op"); |
| 4073 | uint32_t init = read32_ileb128(mod.ptr, &i); |
| 4074 | *global = (uint32_t)init; |
| 4075 | } |
| 4076 | } |
| 4077 | |
| 4078 | // Allocate and initialize memory. |
| 4079 | uint32_t memory_len; |
| 4080 | { |
| 4081 | i = section_starts[Section_memory]; |
| 4082 | uint32_t memories_len = read32_uleb128(mod.ptr, &i); |
| 4083 | if (memories_len != 1) panic("unexpected memory count"); |
| 4084 | uint32_t flags = read32_uleb128(mod.ptr, &i); |
| 4085 | (void)flags; |
| 4086 | memory_len = read32_uleb128(mod.ptr, &i) * wasm_page_size; |
| 4087 | |
| 4088 | i = section_starts[Section_data]; |
| 4089 | uint32_t datas_count = read32_uleb128(mod.ptr, &i); |
| 4090 | for (; datas_count > 0; datas_count -= 1) { |
| 4091 | uint32_t mode = read32_uleb128(mod.ptr, &i); |
| 4092 | if (mode != 0) panic("expected mode 0"); |
| 4093 | enum WasmOp opcode = mod.ptr[i]; |
| 4094 | i += 1; |
| 4095 | if (opcode != WasmOp_i32_const) panic("expected opcode i32_const"); |
| 4096 | uint32_t offset = read32_uleb128(mod.ptr, &i); |
| 4097 | enum WasmOp end = mod.ptr[i]; |
| 4098 | if (end != WasmOp_end) panic("expected end opcode"); |
| 4099 | i += 1; |
| 4100 | uint32_t bytes_len = read32_uleb128(mod.ptr, &i); |
| 4101 | memcpy(memory + offset, mod.ptr + i, bytes_len); |
| 4102 | i += bytes_len; |
| 4103 | } |
| 4104 | } |
| 4105 | |
| 4106 | uint32_t *table = NULL; |
| 4107 | { |
| 4108 | i = section_starts[Section_table]; |
| 4109 | uint32_t table_count = read32_uleb128(mod.ptr, &i); |
| 4110 | if (table_count > 1) { |
| 4111 | panic("expected only one table section"); |
| 4112 | } else if (table_count == 1) { |
| 4113 | uint32_t element_type = read32_uleb128(mod.ptr, &i); |
| 4114 | (void)element_type; |
| 4115 | uint32_t has_max = read32_uleb128(mod.ptr, &i); |
| 4116 | if (has_max != 1) panic("expected has_max==1"); |
| 4117 | uint32_t initial = read32_uleb128(mod.ptr, &i); |
| 4118 | (void)initial; |
| 4119 | uint32_t maximum = read32_uleb128(mod.ptr, &i); |
| 4120 | |
| 4121 | i = section_starts[Section_element]; |
| 4122 | uint32_t element_section_count = read32_uleb128(mod.ptr, &i); |
| 4123 | if (element_section_count != 1) panic("expected one element section"); |
| 4124 | uint32_t flags = read32_uleb128(mod.ptr, &i); |
| 4125 | (void)flags; |
| 4126 | enum WasmOp opcode = mod.ptr[i]; |
| 4127 | i += 1; |
| 4128 | if (opcode != WasmOp_i32_const) panic("expected op i32_const"); |
| 4129 | uint32_t offset = read32_uleb128(mod.ptr, &i); |
| 4130 | enum WasmOp end = mod.ptr[i]; |
| 4131 | if (end != WasmOp_end) panic("expected op end"); |
| 4132 | i += 1; |
| 4133 | uint32_t elem_count = read32_uleb128(mod.ptr, &i); |
| 4134 | |
| 4135 | table = arena_alloc(sizeof(uint32_t) * maximum); |
| 4136 | memset(table, 0, maximum); |
| 4137 | |
| 4138 | for (uint32_t elem_i = 0; elem_i < elem_count; elem_i += 1) { |
| 4139 | table[elem_i + offset] = read32_uleb128(mod.ptr, &i); |
| 4140 | } |
| 4141 | } |
| 4142 | } |
| 4143 | |
| 4144 | struct VirtualMachine vm; |
| 4145 | vm.stack = arena_alloc(sizeof(uint64_t) * 10000000), |
| 4146 | vm.mod_ptr = mod.ptr; |
| 4147 | vm.opcodes = arena_alloc(2000000); |
| 4148 | vm.operands = arena_alloc(sizeof(uint32_t) * 2000000); |
| 4149 | vm.stack_top = 0; |
| 4150 | vm.functions = functions; |
| 4151 | vm.types = types; |
| 4152 | vm.globals = globals; |
| 4153 | vm.memory = memory; |
| 4154 | vm.memory_len = memory_len; |
| 4155 | vm.imports = imports; |
| 4156 | vm.imports_len = imports_len; |
| 4157 | vm.args = argv + vm_argv_start; |
| 4158 | vm.table = table; |
| 4159 | |
| 4160 | { |
| 4161 | uint32_t code_i = section_starts[Section_code]; |
| 4162 | uint32_t codes_len = read32_uleb128(mod.ptr, &code_i); |
| 4163 | if (codes_len != functions_len) panic("code/function length mismatch"); |
| 4164 | struct ProgramCounter pc; |
| 4165 | pc.opcode = 0; |
| 4166 | pc.operand = 0; |
| 4167 | for (uint32_t func_i = 0; func_i < functions_len; func_i += 1) { |
| 4168 | struct Function *func = &functions[func_i]; |
| 4169 | uint32_t size = read32_uleb128(mod.ptr, &code_i); |
| 4170 | uint32_t code_begin = code_i; |
| 4171 | |
| 4172 | struct TypeInfo *type_info = &vm.types[func->type_idx]; |
| 4173 | func->locals_count = 0; |
| 4174 | func->local_types = arena_alloc(sizeof(uint32_t) * ((type_info->param_count + func->locals_count + 31) / 32)); |
| 4175 | func->local_types[0] = type_info->param_types; |
| 4176 | |
| 4177 | for (uint32_t local_sets_count = read32_uleb128(mod.ptr, &code_i); |
| 4178 | local_sets_count > 0; local_sets_count -= 1) { |
| 4179 | uint32_t set_count = read32_uleb128(mod.ptr, &code_i); |
| 4180 | int64_t local_type = read64_ileb128(mod.ptr, &code_i); |
| 4181 | |
| 4182 | uint32_t i = type_info->param_count + func->locals_count; |
| 4183 | func->locals_count += set_count; |
| 4184 | if ((type_info->param_count + func->locals_count + 31) / 32 > (i + 31) / 32) |
| 4185 | func->local_types = arena_realloc(func->local_types, sizeof(uint32_t) * ((type_info->param_count + func->locals_count + 31) / 32)); |
| 4186 | for (; i < type_info->param_count + func->locals_count; i += 1) |
| 4187 | switch (local_type) { |
| 4188 | case -1: case -3: bs_unset(func->local_types, i); break; |
| 4189 | case -2: case -4: bs_set(func->local_types, i); break; |
| 4190 | default: panic("unexpected local type"); |
| 4191 | } |
| 4192 | } |
| 4193 | |
| 4194 | func->entry_pc = pc; |
| 4195 | vm_decodeCode(&vm, func, &code_i, &pc); |
| 4196 | if (code_i != code_begin + size) panic("bad code size"); |
| 4197 | } |
| 4198 | |
| 4199 | uint64_t opcode_counts[0x100]; |
| 4200 | memset(opcode_counts, 0, 0x100); |
| 4201 | uint64_t prefixed_opcode_counts[0x100]; |
| 4202 | memset(prefixed_opcode_counts, 0, 0x100); |
| 4203 | bool is_prefixed = false; |
| 4204 | for (uint32_t opcode_i = 0; opcode_i < pc.opcode; opcode_i += 1) { |
| 4205 | uint8_t opcode = vm.opcodes[opcode_i]; |
| 4206 | if (!is_prefixed) { |
| 4207 | opcode_counts[opcode] += 1; |
| 4208 | is_prefixed = opcode == WasmOp_prefixed; |
| 4209 | } else { |
| 4210 | prefixed_opcode_counts[opcode] += 1; |
| 4211 | is_prefixed = false; |
| 4212 | } |
| 4213 | } |
| 4214 | } |
| 4215 | |
| 4216 | vm_call(&vm, start_fn_idx); |
| 4217 | vm_run(&vm); |
| 4218 | |
| 4219 | return 0; |
| 4220 | } |
Andrew Kelley <andrew@ziglang.org> 2022-11-15 00:33:05-07:00