Loading...
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 | #!/bin/awk -f # SPDX-License-Identifier: GPL-2.0 # gen-insn-attr-x86.awk: Instruction attribute table generator # Written by Masami Hiramatsu <mhiramat@redhat.com> # # Usage: awk -f gen-insn-attr-x86.awk x86-opcode-map.txt > inat-tables.c # Awk implementation sanity check function check_awk_implement() { if (sprintf("%x", 0) != "0") return "Your awk has a printf-format problem." return "" } # Clear working vars function clear_vars() { delete table delete lptable2 delete lptable1 delete lptable3 eid = -1 # escape id gid = -1 # group id aid = -1 # AVX id tname = "" } BEGIN { # Implementation error checking awkchecked = check_awk_implement() if (awkchecked != "") { print "Error: " awkchecked > "/dev/stderr" print "Please try to use gawk." > "/dev/stderr" exit 1 } # Setup generating tables print "/* x86 opcode map generated from x86-opcode-map.txt */" print "/* Do not change this code. */\n" ggid = 1 geid = 1 gaid = 0 delete etable delete gtable delete atable opnd_expr = "^[A-Za-z/]" ext_expr = "^\\(" sep_expr = "^\\|$" group_expr = "^Grp[0-9A-Za-z]+" imm_expr = "^[IJAOL][a-z]" imm_flag["Ib"] = "INAT_MAKE_IMM(INAT_IMM_BYTE)" imm_flag["Jb"] = "INAT_MAKE_IMM(INAT_IMM_BYTE)" imm_flag["Iw"] = "INAT_MAKE_IMM(INAT_IMM_WORD)" imm_flag["Id"] = "INAT_MAKE_IMM(INAT_IMM_DWORD)" imm_flag["Iq"] = "INAT_MAKE_IMM(INAT_IMM_QWORD)" imm_flag["Ap"] = "INAT_MAKE_IMM(INAT_IMM_PTR)" imm_flag["Iz"] = "INAT_MAKE_IMM(INAT_IMM_VWORD32)" imm_flag["Jz"] = "INAT_MAKE_IMM(INAT_IMM_VWORD32)" imm_flag["Iv"] = "INAT_MAKE_IMM(INAT_IMM_VWORD)" imm_flag["Ob"] = "INAT_MOFFSET" imm_flag["Ov"] = "INAT_MOFFSET" imm_flag["Lx"] = "INAT_MAKE_IMM(INAT_IMM_BYTE)" modrm_expr = "^([CDEGMNPQRSUVW/][a-z]+|NTA|T[012])" force64_expr = "\\([df]64\\)" rex_expr = "^REX(\\.[XRWB]+)*" fpu_expr = "^ESC" # TODO lprefix1_expr = "\\((66|!F3)\\)" lprefix2_expr = "\\(F3\\)" lprefix3_expr = "\\((F2|!F3|66&F2)\\)" lprefix_expr = "\\((66|F2|F3)\\)" max_lprefix = 4 # All opcodes starting with lower-case 'v', 'k' or with (v1) superscript # accepts VEX prefix vexok_opcode_expr = "^[vk].*" vexok_expr = "\\(v1\\)" # All opcodes with (v) superscript supports *only* VEX prefix vexonly_expr = "\\(v\\)" # All opcodes with (ev) superscript supports *only* EVEX prefix evexonly_expr = "\\(ev\\)" prefix_expr = "\\(Prefix\\)" prefix_num["Operand-Size"] = "INAT_PFX_OPNDSZ" prefix_num["REPNE"] = "INAT_PFX_REPNE" prefix_num["REP/REPE"] = "INAT_PFX_REPE" prefix_num["XACQUIRE"] = "INAT_PFX_REPNE" prefix_num["XRELEASE"] = "INAT_PFX_REPE" prefix_num["LOCK"] = "INAT_PFX_LOCK" prefix_num["SEG=CS"] = "INAT_PFX_CS" prefix_num["SEG=DS"] = "INAT_PFX_DS" prefix_num["SEG=ES"] = "INAT_PFX_ES" prefix_num["SEG=FS"] = "INAT_PFX_FS" prefix_num["SEG=GS"] = "INAT_PFX_GS" prefix_num["SEG=SS"] = "INAT_PFX_SS" prefix_num["Address-Size"] = "INAT_PFX_ADDRSZ" prefix_num["VEX+1byte"] = "INAT_PFX_VEX2" prefix_num["VEX+2byte"] = "INAT_PFX_VEX3" prefix_num["EVEX"] = "INAT_PFX_EVEX" clear_vars() } function semantic_error(msg) { print "Semantic error at " NR ": " msg > "/dev/stderr" exit 1 } function debug(msg) { print "DEBUG: " msg } function array_size(arr, i,c) { c = 0 for (i in arr) c++ return c } /^Table:/ { print "/* " $0 " */" if (tname != "") semantic_error("Hit Table: before EndTable:."); } /^Referrer:/ { if (NF != 1) { # escape opcode table ref = "" for (i = 2; i <= NF; i++) ref = ref $i eid = escape[ref] tname = sprintf("inat_escape_table_%d", eid) } } /^AVXcode:/ { if (NF != 1) { # AVX/escape opcode table aid = $2 if (gaid <= aid) gaid = aid + 1 if (tname == "") # AVX only opcode table tname = sprintf("inat_avx_table_%d", $2) } if (aid == -1 && eid == -1) # primary opcode table tname = "inat_primary_table" } /^GrpTable:/ { print "/* " $0 " */" if (!($2 in group)) semantic_error("No group: " $2 ) gid = group[$2] tname = "inat_group_table_" gid } function print_table(tbl,name,fmt,n) { print "const insn_attr_t " name " = {" for (i = 0; i < n; i++) { id = sprintf(fmt, i) if (tbl[id]) print " [" id "] = " tbl[id] "," } print "};" } /^EndTable/ { if (gid != -1) { # print group tables if (array_size(table) != 0) { print_table(table, tname "[INAT_GROUP_TABLE_SIZE]", "0x%x", 8) gtable[gid,0] = tname } if (array_size(lptable1) != 0) { print_table(lptable1, tname "_1[INAT_GROUP_TABLE_SIZE]", "0x%x", 8) gtable[gid,1] = tname "_1" } if (array_size(lptable2) != 0) { print_table(lptable2, tname "_2[INAT_GROUP_TABLE_SIZE]", "0x%x", 8) gtable[gid,2] = tname "_2" } if (array_size(lptable3) != 0) { print_table(lptable3, tname "_3[INAT_GROUP_TABLE_SIZE]", "0x%x", 8) gtable[gid,3] = tname "_3" } } else { # print primary/escaped tables if (array_size(table) != 0) { print_table(table, tname "[INAT_OPCODE_TABLE_SIZE]", "0x%02x", 256) etable[eid,0] = tname if (aid >= 0) atable[aid,0] = tname } if (array_size(lptable1) != 0) { print_table(lptable1,tname "_1[INAT_OPCODE_TABLE_SIZE]", "0x%02x", 256) etable[eid,1] = tname "_1" if (aid >= 0) atable[aid,1] = tname "_1" } if (array_size(lptable2) != 0) { print_table(lptable2,tname "_2[INAT_OPCODE_TABLE_SIZE]", "0x%02x", 256) etable[eid,2] = tname "_2" if (aid >= 0) atable[aid,2] = tname "_2" } if (array_size(lptable3) != 0) { print_table(lptable3,tname "_3[INAT_OPCODE_TABLE_SIZE]", "0x%02x", 256) etable[eid,3] = tname "_3" if (aid >= 0) atable[aid,3] = tname "_3" } } print "" clear_vars() } function add_flags(old,new) { if (old && new) return old " | " new else if (old) return old else return new } # convert operands to flags. function convert_operands(count,opnd, i,j,imm,mod) { imm = null mod = null for (j = 1; j <= count; j++) { i = opnd[j] if (match(i, imm_expr) == 1) { if (!imm_flag[i]) semantic_error("Unknown imm opnd: " i) if (imm) { if (i != "Ib") semantic_error("Second IMM error") imm = add_flags(imm, "INAT_SCNDIMM") } else imm = imm_flag[i] } else if (match(i, modrm_expr)) mod = "INAT_MODRM" } return add_flags(imm, mod) } /^[0-9a-f]+:/ { if (NR == 1) next # get index idx = "0x" substr($1, 1, index($1,":") - 1) if (idx in table) semantic_error("Redefine " idx " in " tname) # check if escaped opcode if ("escape" == $2) { if ($3 != "#") semantic_error("No escaped name") ref = "" for (i = 4; i <= NF; i++) ref = ref $i if (ref in escape) semantic_error("Redefine escape (" ref ")") escape[ref] = geid geid++ table[idx] = "INAT_MAKE_ESCAPE(" escape[ref] ")" next } variant = null # converts i = 2 while (i <= NF) { opcode = $(i++) delete opnds ext = null flags = null opnd = null # parse one opcode if (match($i, opnd_expr)) { opnd = $i count = split($(i++), opnds, ",") flags = convert_operands(count, opnds) } if (match($i, ext_expr)) ext = $(i++) if (match($i, sep_expr)) i++ else if (i < NF) semantic_error($i " is not a separator") # check if group opcode if (match(opcode, group_expr)) { if (!(opcode in group)) { group[opcode] = ggid ggid++ } flags = add_flags(flags, "INAT_MAKE_GROUP(" group[opcode] ")") } # check force(or default) 64bit if (match(ext, force64_expr)) flags = add_flags(flags, "INAT_FORCE64") # check REX prefix if (match(opcode, rex_expr)) flags = add_flags(flags, "INAT_MAKE_PREFIX(INAT_PFX_REX)") # check coprocessor escape : TODO if (match(opcode, fpu_expr)) flags = add_flags(flags, "INAT_MODRM") # check VEX codes if (match(ext, evexonly_expr)) flags = add_flags(flags, "INAT_VEXOK | INAT_EVEXONLY") else if (match(ext, vexonly_expr)) flags = add_flags(flags, "INAT_VEXOK | INAT_VEXONLY") else if (match(ext, vexok_expr) || match(opcode, vexok_opcode_expr)) flags = add_flags(flags, "INAT_VEXOK") # check prefixes if (match(ext, prefix_expr)) { if (!prefix_num[opcode]) semantic_error("Unknown prefix: " opcode) flags = add_flags(flags, "INAT_MAKE_PREFIX(" prefix_num[opcode] ")") } if (length(flags) == 0) continue # check if last prefix if (match(ext, lprefix1_expr)) { lptable1[idx] = add_flags(lptable1[idx],flags) variant = "INAT_VARIANT" } if (match(ext, lprefix2_expr)) { lptable2[idx] = add_flags(lptable2[idx],flags) variant = "INAT_VARIANT" } if (match(ext, lprefix3_expr)) { lptable3[idx] = add_flags(lptable3[idx],flags) variant = "INAT_VARIANT" } if (!match(ext, lprefix_expr)){ table[idx] = add_flags(table[idx],flags) } } if (variant) table[idx] = add_flags(table[idx],variant) } END { if (awkchecked != "") exit 1 print "#ifndef __BOOT_COMPRESSED\n" # print escape opcode map's array print "/* Escape opcode map array */" print "const insn_attr_t * const inat_escape_tables[INAT_ESC_MAX + 1]" \ "[INAT_LSTPFX_MAX + 1] = {" for (i = 0; i < geid; i++) for (j = 0; j < max_lprefix; j++) if (etable[i,j]) print " ["i"]["j"] = "etable[i,j]"," print "};\n" # print group opcode map's array print "/* Group opcode map array */" print "const insn_attr_t * const inat_group_tables[INAT_GRP_MAX + 1]"\ "[INAT_LSTPFX_MAX + 1] = {" for (i = 0; i < ggid; i++) for (j = 0; j < max_lprefix; j++) if (gtable[i,j]) print " ["i"]["j"] = "gtable[i,j]"," print "};\n" # print AVX opcode map's array print "/* AVX opcode map array */" print "const insn_attr_t * const inat_avx_tables[X86_VEX_M_MAX + 1]"\ "[INAT_LSTPFX_MAX + 1] = {" for (i = 0; i < gaid; i++) for (j = 0; j < max_lprefix; j++) if (atable[i,j]) print " ["i"]["j"] = "atable[i,j]"," print "};\n" print "#else /* !__BOOT_COMPRESSED */\n" print "/* Escape opcode map array */" print "static const insn_attr_t *inat_escape_tables[INAT_ESC_MAX + 1]" \ "[INAT_LSTPFX_MAX + 1];" print "" print "/* Group opcode map array */" print "static const insn_attr_t *inat_group_tables[INAT_GRP_MAX + 1]"\ "[INAT_LSTPFX_MAX + 1];" print "" print "/* AVX opcode map array */" print "static const insn_attr_t *inat_avx_tables[X86_VEX_M_MAX + 1]"\ "[INAT_LSTPFX_MAX + 1];" print "" print "static void inat_init_tables(void)" print "{" # print escape opcode map's array print "\t/* Print Escape opcode map array */" for (i = 0; i < geid; i++) for (j = 0; j < max_lprefix; j++) if (etable[i,j]) print "\tinat_escape_tables["i"]["j"] = "etable[i,j]";" print "" # print group opcode map's array print "\t/* Print Group opcode map array */" for (i = 0; i < ggid; i++) for (j = 0; j < max_lprefix; j++) if (gtable[i,j]) print "\tinat_group_tables["i"]["j"] = "gtable[i,j]";" print "" # print AVX opcode map's array print "\t/* Print AVX opcode map array */" for (i = 0; i < gaid; i++) for (j = 0; j < max_lprefix; j++) if (atable[i,j]) print "\tinat_avx_tables["i"]["j"] = "atable[i,j]";" print "}" print "#endif" } |