HCoop / hcoop / debian / mlton.git / blame
| Commit | Line | Data |
|---|---|---|
| 7f918cf1 CE |
1 | (* Copyright (C) 2009,2014-2017 Matthew Fluet. |
| 2 | * Copyright (C) 1999-2008 Henry Cejtin, Matthew Fluet, Suresh | |
| 3 | * Jagannathan, and Stephen Weeks. | |
| 4 | * Copyright (C) 1997-2000 NEC Research Institute. | |
| 5 | * | |
| 6 | * MLton is released under a BSD-style license. | |
| 7 | * See the file MLton-LICENSE for details. | |
| 8 | *) | |
| 9 | ||
| 10 | functor CCodegen (S: C_CODEGEN_STRUCTS): C_CODEGEN = | |
| 11 | struct | |
| 12 | ||
| 13 | open S | |
| 14 | ||
| 15 | open Machine | |
| 16 | ||
| 17 | datatype z = datatype RealSize.t | |
| 18 | datatype z = datatype WordSize.prim | |
| 19 | ||
| 20 | local | |
| 21 | open Runtime | |
| 22 | in | |
| 23 | structure GCField = GCField | |
| 24 | end | |
| 25 | ||
| 26 | structure Kind = | |
| 27 | struct | |
| 28 | open Kind | |
| 29 | ||
| 30 | fun isEntry (k: t): bool = | |
| 31 | case k of | |
| 32 | Cont _ => true | |
| 33 | | CReturn {func, ...} => CFunction.mayGC func | |
| 34 | | Func => true | |
| 35 | | Handler _ => true | |
| 36 | | _ => false | |
| 37 | end | |
| 38 | ||
| 39 | val traceGotoLabel = Trace.trace ("CCodegen.gotoLabel", Label.layout, Unit.layout) | |
| 40 | ||
| 41 | structure C = | |
| 42 | struct | |
| 43 | val truee = "TRUE" | |
| 44 | val falsee = "FALSE" | |
| 45 | ||
| 46 | fun bool b = if b then truee else falsee | |
| 47 | ||
| 48 | fun args (ss: string list): string | |
| 49 | = concat ("(" :: List.separate (ss, ", ") @ [")"]) | |
| 50 | ||
| 51 | fun callNoSemi (f: string, xs: string list, print: string -> unit): unit | |
| 52 | = (print f | |
| 53 | ; print " (" | |
| 54 | ; (case xs | |
| 55 | of [] => () | |
| 56 | | x :: xs => (print x | |
| 57 | ; List.foreach (xs, | |
| 58 | fn x => (print ", "; print x)))) | |
| 59 | ; print ")") | |
| 60 | ||
| 61 | fun call (f, xs, print) = | |
| 62 | (callNoSemi (f, xs, print) | |
| 63 | ; print ";\n") | |
| 64 | ||
| 65 | fun int (i: int) = | |
| 66 | if i >= 0 | |
| 67 | then Int.toString i | |
| 68 | else concat ["-", Int.toString (~ i)] | |
| 69 | ||
| 70 | val bytes = int o Bytes.toInt | |
| 71 | ||
| 72 | fun string s = | |
| 73 | let val quote = "\"" | |
| 74 | in concat [quote, String.escapeC s, quote] | |
| 75 | end | |
| 76 | ||
| 77 | fun word (w: Word.t) = "0x" ^ Word.toString w | |
| 78 | ||
| 79 | fun push (size: Bytes.t, print) = | |
| 80 | call ("\tPush", [bytes size], print) | |
| 81 | end | |
| 82 | ||
| 83 | structure RealX = | |
| 84 | struct | |
| 85 | open RealX | |
| 86 | ||
| 87 | fun toC (r: t): string = | |
| 88 | let | |
| 89 | (* The main difference between SML reals and C floats/doubles is that | |
| 90 | * SML uses "~" while C uses "-". | |
| 91 | *) | |
| 92 | val s = | |
| 93 | String.translate (toString r, | |
| 94 | fn #"~" => "-" | c => String.fromChar c) | |
| 95 | (* Also, inf is spelled INFINITY and nan is NAN in C. *) | |
| 96 | val s = | |
| 97 | case s of | |
| 98 | "-inf" => "-INFINITY" | |
| 99 | | "inf" => "INFINITY" | |
| 100 | | "nan" => "NAN" | |
| 101 | | other => other | |
| 102 | in | |
| 103 | case size r of | |
| 104 | R32 => concat ["(Real32)", s] | |
| 105 | | R64 => s | |
| 106 | end | |
| 107 | end | |
| 108 | ||
| 109 | structure WordX = | |
| 110 | struct | |
| 111 | open WordX | |
| 112 | ||
| 113 | fun toC (w: t): string = | |
| 114 | let | |
| 115 | fun doit s = | |
| 116 | concat ["(Word", s, ")(", toString w, "ull)"] | |
| 117 | in | |
| 118 | case WordSize.prim (size w) of | |
| 119 | W8 => doit "8" | |
| 120 | | W16 => doit "16" | |
| 121 | | W32 => doit "32" | |
| 122 | | W64 => doit "64" | |
| 123 | end | |
| 124 | end | |
| 125 | ||
| 126 | structure WordXVector = | |
| 127 | struct | |
| 128 | local | |
| 129 | structure Z = WordX | |
| 130 | in | |
| 131 | open WordXVector | |
| 132 | structure WordX = Z | |
| 133 | end | |
| 134 | ||
| 135 | fun toC (v: t): string = | |
| 136 | let | |
| 137 | fun string () = | |
| 138 | concat ["(pointer)", | |
| 139 | C.string (String.implode (toListMap (v, WordX.toChar)))] | |
| 140 | fun vector s = | |
| 141 | concat ["(pointer)((Word", s, "[]){", | |
| 142 | String.concatWith (toListMap (v, WordX.toC), ","), | |
| 143 | "})"] | |
| 144 | in | |
| 145 | case WordSize.prim (elementSize v) of | |
| 146 | W8 => string () | |
| 147 | | W16 => vector "16" | |
| 148 | | W32 => vector "32" | |
| 149 | | W64 => vector "64" | |
| 150 | end | |
| 151 | end | |
| 152 | ||
| 153 | structure Operand = | |
| 154 | struct | |
| 155 | open Operand | |
| 156 | ||
| 157 | fun isMem (z: t): bool = | |
| 158 | case z of | |
| 159 | ArrayOffset _ => true | |
| 160 | | Cast (z, _) => isMem z | |
| 161 | | Contents _ => true | |
| 162 | | Offset _ => true | |
| 163 | | StackOffset _ => true | |
| 164 | | _ => false | |
| 165 | end | |
| 166 | ||
| 167 | fun implementsPrim (p: 'a Prim.t): bool = | |
| 168 | let | |
| 169 | datatype z = datatype Prim.Name.t | |
| 170 | in | |
| 171 | case Prim.name p of | |
| 172 | CPointer_add => true | |
| 173 | | CPointer_diff => true | |
| 174 | | CPointer_equal => true | |
| 175 | | CPointer_fromWord => true | |
| 176 | | CPointer_lt => true | |
| 177 | | CPointer_sub => true | |
| 178 | | CPointer_toWord => true | |
| 179 | | FFI_Symbol _ => true | |
| 180 | | Real_Math_acos _ => true | |
| 181 | | Real_Math_asin _ => true | |
| 182 | | Real_Math_atan _ => true | |
| 183 | | Real_Math_atan2 _ => true | |
| 184 | | Real_Math_cos _ => true | |
| 185 | | Real_Math_exp _ => true | |
| 186 | | Real_Math_ln _ => true | |
| 187 | | Real_Math_log10 _ => true | |
| 188 | | Real_Math_sin _ => true | |
| 189 | | Real_Math_sqrt _ => true | |
| 190 | | Real_Math_tan _ => true | |
| 191 | | Real_abs _ => true | |
| 192 | | Real_add _ => true | |
| 193 | | Real_castToWord _ => true | |
| 194 | | Real_div _ => true | |
| 195 | | Real_equal _ => true | |
| 196 | | Real_ldexp _ => true | |
| 197 | | Real_le _ => true | |
| 198 | | Real_lt _ => true | |
| 199 | | Real_mul _ => true | |
| 200 | | Real_muladd _ => true | |
| 201 | | Real_mulsub _ => true | |
| 202 | | Real_neg _ => true | |
| 203 | | Real_qequal _ => false | |
| 204 | | Real_rndToReal _ => true | |
| 205 | | Real_rndToWord _ => true | |
| 206 | | Real_round _ => true | |
| 207 | | Real_sub _ => true | |
| 208 | | Word_add _ => true | |
| 209 | | Word_addCheck _ => true | |
| 210 | | Word_andb _ => true | |
| 211 | | Word_castToReal _ => true | |
| 212 | | Word_equal _ => true | |
| 213 | | Word_extdToWord _ => true | |
| 214 | | Word_lshift _ => true | |
| 215 | | Word_lt _ => true | |
| 216 | | Word_mul _ => true | |
| 217 | | Word_mulCheck _ => true | |
| 218 | | Word_neg _ => true | |
| 219 | | Word_negCheck _ => true | |
| 220 | | Word_notb _ => true | |
| 221 | | Word_orb _ => true | |
| 222 | | Word_quot (_, {signed}) => not signed | |
| 223 | | Word_rem (_, {signed}) => not signed | |
| 224 | | Word_rndToReal _ => true | |
| 225 | | Word_rol _ => true | |
| 226 | | Word_ror _ => true | |
| 227 | | Word_rshift _ => true | |
| 228 | | Word_sub _ => true | |
| 229 | | Word_subCheck _ => true | |
| 230 | | Word_xorb _ => true | |
| 231 | | _ => false | |
| 232 | end | |
| 233 | ||
| 234 | fun creturn (t: Type.t): string = | |
| 235 | concat ["CReturn", CType.name (Type.toCType t)] | |
| 236 | ||
| 237 | fun outputIncludes (includes, print) = | |
| 238 | (List.foreach (includes, fn i => (print "#include <"; | |
| 239 | print i; | |
| 240 | print ">\n")) | |
| 241 | ; print "\n") | |
| 242 | ||
| 243 | fun declareProfileLabel (l, print) = | |
| 244 | C.call ("DeclareProfileLabel", [ProfileLabel.toString l], print) | |
| 245 | ||
| 246 | fun declareGlobals (prefix: string, print) = | |
| 247 | let | |
| 248 | (* gcState can't be static because stuff in mlton-lib.c refers to | |
| 249 | * it. | |
| 250 | *) | |
| 251 | val _ = print (concat [prefix, "struct GC_state gcState;\n"]) | |
| 252 | val _ = | |
| 253 | List.foreach | |
| 254 | (CType.all, fn t => | |
| 255 | let | |
| 256 | val s = CType.toString t | |
| 257 | in | |
| 258 | print (concat [prefix, s, " global", s, | |
| 259 | " [", C.int (Global.numberOfType t), "];\n"]) | |
| 260 | ; print (concat [prefix, s, " CReturn", CType.name t, ";\n"]) | |
| 261 | end) | |
| 262 | val _ = | |
| 263 | print (concat [prefix, "Pointer globalObjptrNonRoot [", | |
| 264 | C.int (Global.numberOfNonRoot ()), | |
| 265 | "];\n"]) | |
| 266 | in | |
| 267 | () | |
| 268 | end | |
| 269 | ||
| 270 | fun outputDeclarations | |
| 271 | {additionalMainArgs: string list, | |
| 272 | includes: string list, | |
| 273 | print: string -> unit, | |
| 274 | program = (Program.T | |
| 275 | {frameLayouts, frameOffsets, maxFrameSize, | |
| 276 | objectTypes, profileInfo, reals, vectors, ...}), | |
| 277 | rest: unit -> unit | |
| 278 | }: unit = | |
| 279 | let | |
| 280 | fun declareExports () = | |
| 281 | Ffi.declareExports {print = print} | |
| 282 | fun declareLoadSaveGlobals () = | |
| 283 | let | |
| 284 | val _ = | |
| 285 | (print "static int saveGlobals (FILE *f) {\n" | |
| 286 | ; (List.foreach | |
| 287 | (CType.all, fn t => | |
| 288 | print (concat ["\tSaveArray (global", | |
| 289 | CType.toString t, ", f);\n"]))) | |
| 290 | ; print "\treturn 0;\n}\n") | |
| 291 | val _ = | |
| 292 | (print "static int loadGlobals (FILE *f) {\n" | |
| 293 | ; (List.foreach | |
| 294 | (CType.all, fn t => | |
| 295 | print (concat ["\tLoadArray (global", | |
| 296 | CType.toString t, ", f);\n"]))) | |
| 297 | ; print "\treturn 0;\n}\n") | |
| 298 | in | |
| 299 | () | |
| 300 | end | |
| 301 | fun declareVectors () = | |
| 302 | (print "BeginVectorInits\n" | |
| 303 | ; (List.foreach | |
| 304 | (vectors, fn (g, v) => | |
| 305 | (C.callNoSemi ("VectorInitElem", | |
| 306 | [C.int (Bytes.toInt | |
| 307 | (WordSize.bytes | |
| 308 | (WordXVector.elementSize v))), | |
| 309 | C.int (Global.index g), | |
| 310 | C.int (WordXVector.length v), | |
| 311 | WordXVector.toC v], | |
| 312 | print) | |
| 313 | ; print "\n"))) | |
| 314 | ; print "EndVectorInits\n") | |
| 315 | fun declareReals () = | |
| 316 | (print "static void real_Init() {\n" | |
| 317 | ; List.foreach (reals, fn (g, r) => | |
| 318 | print (concat ["\tglobalReal", | |
| 319 | RealSize.toString (RealX.size r), | |
| 320 | "[", C.int (Global.index g), "] = ", | |
| 321 | RealX.toC r, ";\n"])) | |
| 322 | ; print "}\n") | |
| 323 | fun declareFrameOffsets () = | |
| 324 | Vector.foreachi | |
| 325 | (frameOffsets, fn (i, v) => | |
| 326 | (print (concat ["static uint16_t frameOffsets", C.int i, "[] = {"]) | |
| 327 | ; print (C.int (Vector.length v)) | |
| 328 | ; Vector.foreach (v, fn i => (print ","; print (C.bytes i))) | |
| 329 | ; print "};\n")) | |
| 330 | fun declareArray (ty: string, | |
| 331 | name: string, | |
| 332 | v: 'a vector, | |
| 333 | toString: int * 'a -> string) = | |
| 334 | (print (concat ["static ", ty, " ", name, "[] = {\n"]) | |
| 335 | ; Vector.foreachi (v, fn (i, x) => | |
| 336 | print (concat ["\t", toString (i, x), ",\n"])) | |
| 337 | ; print "};\n") | |
| 338 | fun declareFrameLayouts () = | |
| 339 | declareArray ("struct GC_frameLayout", "frameLayouts", frameLayouts, | |
| 340 | fn (_, {frameOffsetsIndex, isC, size}) => | |
| 341 | concat ["{", | |
| 342 | if isC then "C_FRAME" else "ML_FRAME", | |
| 343 | ", frameOffsets", C.int frameOffsetsIndex, | |
| 344 | ", ", C.bytes size, | |
| 345 | "}"]) | |
| 346 | fun declareAtMLtons () = | |
| 347 | declareArray ("char*", "atMLtons", !Control.atMLtons, C.string o #2) | |
| 348 | fun declareObjectTypes () = | |
| 349 | declareArray | |
| 350 | ("struct GC_objectType", "objectTypes", objectTypes, | |
| 351 | fn (_, ty) => | |
| 352 | let | |
| 353 | datatype z = datatype Runtime.RObjectType.t | |
| 354 | val (tag, hasIdentity, bytesNonObjptrs, numObjptrs) = | |
| 355 | case ObjectType.toRuntime ty of | |
| 356 | Array {hasIdentity, bytesNonObjptrs, numObjptrs} => | |
| 357 | ("ARRAY_TAG", hasIdentity, | |
| 358 | Bytes.toInt bytesNonObjptrs, numObjptrs) | |
| 359 | | Normal {hasIdentity, bytesNonObjptrs, numObjptrs} => | |
| 360 | ("NORMAL_TAG", hasIdentity, | |
| 361 | Bytes.toInt bytesNonObjptrs, numObjptrs) | |
| 362 | | Stack => | |
| 363 | ("STACK_TAG", false, 0, 0) | |
| 364 | | Weak {gone} => | |
| 365 | let | |
| 366 | val bytesObjptr = | |
| 367 | Bits.toBytes (Control.Target.Size.objptr ()) | |
| 368 | val bytesNonObjptrs = | |
| 369 | let | |
| 370 | val align = | |
| 371 | case !Control.align of | |
| 372 | Control.Align4 => Bytes.fromInt 4 | |
| 373 | | Control.Align8 => Bytes.fromInt 8 | |
| 374 | val bytesMetaData = | |
| 375 | Bits.toBytes (Control.Target.Size.normalMetaData ()) | |
| 376 | val bytesCPointer = | |
| 377 | Bits.toBytes (Control.Target.Size.cpointer ()) | |
| 378 | ||
| 379 | val bytesObject = | |
| 380 | Bytes.+ (bytesMetaData, | |
| 381 | Bytes.+ (bytesCPointer, | |
| 382 | bytesObjptr)) | |
| 383 | val bytesTotal = | |
| 384 | Bytes.align (bytesObject, {alignment = align}) | |
| 385 | val bytesPad = Bytes.- (bytesTotal, bytesObject) | |
| 386 | in | |
| 387 | Bytes.+ (bytesPad, bytesCPointer) | |
| 388 | end | |
| 389 | val (bytesNonObjptrs, bytesObjptr) = | |
| 390 | (Bytes.toInt bytesNonObjptrs, | |
| 391 | Bytes.toInt bytesObjptr) | |
| 392 | val (bytesNonObjptrs, numObjptrs) = | |
| 393 | if gone | |
| 394 | then (bytesNonObjptrs + bytesObjptr, 0) | |
| 395 | else (bytesNonObjptrs, 1) | |
| 396 | in | |
| 397 | ("WEAK_TAG", false, bytesNonObjptrs, numObjptrs) | |
| 398 | end | |
| 399 | in | |
| 400 | concat ["{ ", tag, ", ", | |
| 401 | C.bool hasIdentity, ", ", | |
| 402 | C.int bytesNonObjptrs, ", ", | |
| 403 | C.int numObjptrs, " }"] | |
| 404 | end) | |
| 405 | fun declareMLtonMain () = | |
| 406 | let | |
| 407 | val align = | |
| 408 | case !Control.align of | |
| 409 | Control.Align4 => 4 | |
| 410 | | Control.Align8 => 8 | |
| 411 | val magic = | |
| 412 | let | |
| 413 | val version = String.hash Version.version | |
| 414 | val random = Random.word () | |
| 415 | in | |
| 416 | Word.orb | |
| 417 | (Word.<< (version, Word.fromInt (Word.wordSize - 8)), | |
| 418 | Word.>> (random, Word.fromInt 8)) | |
| 419 | end | |
| 420 | val profile = | |
| 421 | case !Control.profile of | |
| 422 | Control.ProfileNone => "PROFILE_NONE" | |
| 423 | | Control.ProfileAlloc => "PROFILE_ALLOC" | |
| 424 | | Control.ProfileCallStack => "PROFILE_NONE" | |
| 425 | | Control.ProfileCount => "PROFILE_COUNT" | |
| 426 | | Control.ProfileDrop => "PROFILE_NONE" | |
| 427 | | Control.ProfileLabel => "PROFILE_NONE" | |
| 428 | | Control.ProfileTimeField => "PROFILE_TIME_FIELD" | |
| 429 | | Control.ProfileTimeLabel => "PROFILE_TIME_LABEL" | |
| 430 | in | |
| 431 | C.callNoSemi (case !Control.format of | |
| 432 | Control.Archive => "MLtonLibrary" | |
| 433 | | Control.Executable => "MLtonMain" | |
| 434 | | Control.LibArchive => "MLtonLibrary" | |
| 435 | | Control.Library => "MLtonLibrary", | |
| 436 | [C.int align, | |
| 437 | C.word magic, | |
| 438 | C.bytes maxFrameSize, | |
| 439 | C.bool (!Control.markCards), | |
| 440 | profile, | |
| 441 | C.bool (!Control.profileStack)] | |
| 442 | @ additionalMainArgs, | |
| 443 | print) | |
| 444 | ; print "\n" | |
| 445 | end | |
| 446 | fun declareMain () = | |
| 447 | if !Control.emitMain andalso !Control.format = Control.Executable | |
| 448 | then List.foreach | |
| 449 | (["int main (int argc, char* argv[]) {", | |
| 450 | "return (MLton_main (argc, argv));", | |
| 451 | "}"], fn s => (print s; print "\n")) | |
| 452 | else () | |
| 453 | fun declareProfileInfo () = | |
| 454 | let | |
| 455 | fun doit (ProfileInfo.T {frameSources, labels, names, sourceSeqs, | |
| 456 | sources}) = | |
| 457 | (Vector.foreach (labels, fn {label, ...} => | |
| 458 | declareProfileLabel (label, print)) | |
| 459 | ; (Vector.foreachi | |
| 460 | (sourceSeqs, fn (i, v) => | |
| 461 | (print (concat ["static uint32_t sourceSeq", | |
| 462 | Int.toString i, | |
| 463 | "[] = {"]) | |
| 464 | ; print (C.int (Vector.length v)) | |
| 465 | ; Vector.foreach (v, fn i => | |
| 466 | (print (concat [",", C.int i]))) | |
| 467 | ; print "};\n"))) | |
| 468 | ; declareArray ("uint32_t*", "sourceSeqs", sourceSeqs, fn (i, _) => | |
| 469 | concat ["sourceSeq", Int.toString i]) | |
| 470 | ; declareArray ("GC_sourceSeqIndex", "frameSources", frameSources, C.int o #2) | |
| 471 | ; (declareArray | |
| 472 | ("struct GC_sourceLabel", "sourceLabels", labels, | |
| 473 | fn (_, {label, sourceSeqsIndex}) => | |
| 474 | concat ["{(pointer)&", ProfileLabel.toString label, ", ", | |
| 475 | C.int sourceSeqsIndex, "}"])) | |
| 476 | ; declareArray ("char*", "sourceNames", names, C.string o #2) | |
| 477 | ; declareArray ("struct GC_source", "sources", sources, | |
| 478 | fn (_, {nameIndex, successorsIndex}) => | |
| 479 | concat ["{ ", Int.toString nameIndex, ", ", | |
| 480 | Int.toString successorsIndex, " }"])) | |
| 481 | in | |
| 482 | case profileInfo of | |
| 483 | NONE => doit ProfileInfo.empty | |
| 484 | | SOME z => doit z | |
| 485 | end | |
| 486 | in | |
| 487 | outputIncludes (includes, print) | |
| 488 | ; declareGlobals ("PRIVATE ", print) | |
| 489 | ; declareExports () | |
| 490 | ; declareLoadSaveGlobals () | |
| 491 | ; declareVectors () | |
| 492 | ; declareReals () | |
| 493 | ; declareFrameOffsets () | |
| 494 | ; declareFrameLayouts () | |
| 495 | ; declareObjectTypes () | |
| 496 | ; declareProfileInfo () | |
| 497 | ; declareAtMLtons () | |
| 498 | ; rest () | |
| 499 | ; declareMLtonMain () | |
| 500 | ; declareMain () | |
| 501 | end | |
| 502 | ||
| 503 | structure Type = | |
| 504 | struct | |
| 505 | open Type | |
| 506 | ||
| 507 | fun toC (t: t): string = | |
| 508 | CType.toString (Type.toCType t) | |
| 509 | end | |
| 510 | ||
| 511 | structure StackOffset = | |
| 512 | struct | |
| 513 | open StackOffset | |
| 514 | ||
| 515 | fun toString (T {offset, ty}): string = | |
| 516 | concat ["S", C.args [Type.toC ty, C.bytes offset]] | |
| 517 | end | |
| 518 | ||
| 519 | fun contents (ty, z) = concat ["C", C.args [Type.toC ty, z]] | |
| 520 | ||
| 521 | fun declareFFI (Chunk.T {blocks, ...}, {print: string -> unit}) = | |
| 522 | let | |
| 523 | val seen = String.memoize (fn _ => ref false) | |
| 524 | fun doit (name: string, declare: unit -> string): unit = | |
| 525 | let | |
| 526 | val r = seen name | |
| 527 | in | |
| 528 | if !r | |
| 529 | then () | |
| 530 | else (r := true; print (declare ())) | |
| 531 | end | |
| 532 | in | |
| 533 | Vector.foreach | |
| 534 | (blocks, fn Block.T {statements, transfer, ...} => | |
| 535 | let | |
| 536 | datatype z = datatype CFunction.SymbolScope.t | |
| 537 | val _ = | |
| 538 | Vector.foreach | |
| 539 | (statements, fn s => | |
| 540 | case s of | |
| 541 | Statement.PrimApp {prim, ...} => | |
| 542 | (case Prim.name prim of | |
| 543 | Prim.Name.FFI_Symbol {name, cty, symbolScope} => | |
| 544 | doit | |
| 545 | (name, fn () => | |
| 546 | concat [case symbolScope of | |
| 547 | External => "EXTERNAL " | |
| 548 | | Private => "PRIVATE " | |
| 549 | | Public => "PUBLIC ", | |
| 550 | "extern ", | |
| 551 | case cty of | |
| 552 | SOME x => CType.toString x | |
| 553 | | NONE => "void", | |
| 554 | " ", | |
| 555 | name, | |
| 556 | ";\n"]) | |
| 557 | | _ => ()) | |
| 558 | | _ => ()) | |
| 559 | val _ = | |
| 560 | case transfer of | |
| 561 | Transfer.CCall {func, ...} => | |
| 562 | let | |
| 563 | datatype z = datatype CFunction.Target.t | |
| 564 | val CFunction.T {target, ...} = func | |
| 565 | in | |
| 566 | case target of | |
| 567 | Direct "Thread_returnToC" => () | |
| 568 | | Direct name => | |
| 569 | doit (name, fn () => | |
| 570 | concat [CFunction.cPrototype func, ";\n"]) | |
| 571 | | Indirect => () | |
| 572 | end | |
| 573 | | _ => () | |
| 574 | in | |
| 575 | () | |
| 576 | end) | |
| 577 | end | |
| 578 | ||
| 579 | fun output {program as Machine.Program.T {chunks, | |
| 580 | frameLayouts, | |
| 581 | main = {chunkLabel, label}, ...}, | |
| 582 | outputC: unit -> {file: File.t, | |
| 583 | print: string -> unit, | |
| 584 | done: unit -> unit}} = | |
| 585 | let | |
| 586 | datatype status = None | One | Many | |
| 587 | val {get = labelInfo: Label.t -> {block: Block.t, | |
| 588 | chunkLabel: ChunkLabel.t, | |
| 589 | frameIndex: int option, | |
| 590 | status: status ref, | |
| 591 | layedOut: bool ref}, | |
| 592 | set = setLabelInfo, ...} = | |
| 593 | Property.getSetOnce | |
| 594 | (Label.plist, Property.initRaise ("CCodeGen.info", Label.layout)) | |
| 595 | val entryLabels: (Label.t * int) list ref = ref [] | |
| 596 | val indexCounter = Counter.new (Vector.length frameLayouts) | |
| 597 | val _ = | |
| 598 | List.foreach | |
| 599 | (chunks, fn Chunk.T {blocks, chunkLabel, ...} => | |
| 600 | Vector.foreach | |
| 601 | (blocks, fn b as Block.T {kind, label, ...} => | |
| 602 | let | |
| 603 | fun entry (index: int) = | |
| 604 | List.push (entryLabels, (label, index)) | |
| 605 | val frameIndex = | |
| 606 | case Kind.frameInfoOpt kind of | |
| 607 | NONE => (if Kind.isEntry kind | |
| 608 | then entry (Counter.next indexCounter) | |
| 609 | else () | |
| 610 | ; NONE) | |
| 611 | | SOME (FrameInfo.T {frameLayoutsIndex, ...}) => | |
| 612 | (entry frameLayoutsIndex | |
| 613 | ; SOME frameLayoutsIndex) | |
| 614 | in | |
| 615 | setLabelInfo (label, {block = b, | |
| 616 | chunkLabel = chunkLabel, | |
| 617 | frameIndex = frameIndex, | |
| 618 | layedOut = ref false, | |
| 619 | status = ref None}) | |
| 620 | end)) | |
| 621 | val a = Array.fromList (!entryLabels) | |
| 622 | val () = QuickSort.sortArray (a, fn ((_, i), (_, i')) => i <= i') | |
| 623 | val entryLabels = Vector.map (Vector.fromArray a, #1) | |
| 624 | val labelChunk = #chunkLabel o labelInfo | |
| 625 | val {get = chunkLabelIndex: ChunkLabel.t -> int, ...} = | |
| 626 | Property.getSet (ChunkLabel.plist, | |
| 627 | Property.initFun (let | |
| 628 | val c = Counter.new 0 | |
| 629 | in | |
| 630 | fn _ => Counter.next c | |
| 631 | end)) | |
| 632 | val chunkLabelToString = C.int o chunkLabelIndex | |
| 633 | fun declareChunk (Chunk.T {chunkLabel, ...}, print) = | |
| 634 | C.call ("DeclareChunk", | |
| 635 | [chunkLabelToString chunkLabel], | |
| 636 | print) | |
| 637 | val {get = labelIndex, set = setLabelIndex, ...} = | |
| 638 | Property.getSetOnce (Label.plist, | |
| 639 | Property.initRaise ("index", Label.layout)) | |
| 640 | val _ = | |
| 641 | Vector.foreachi (entryLabels, fn (i, l) => setLabelIndex (l, i)) | |
| 642 | fun labelToStringIndex (l: Label.t): string = | |
| 643 | let | |
| 644 | val s = C.int (labelIndex l) | |
| 645 | in | |
| 646 | if 0 = !Control.Native.commented | |
| 647 | then s | |
| 648 | else concat [s, " /* ", Label.toString l, " */"] | |
| 649 | end | |
| 650 | val handleMisaligned = | |
| 651 | let | |
| 652 | open Control | |
| 653 | in | |
| 654 | !align = Align4 | |
| 655 | andalso (case !Control.Target.arch of | |
| 656 | Target.HPPA => true | |
| 657 | | Target.Sparc => true | |
| 658 | | _ => false) | |
| 659 | end | |
| 660 | val handleMisaligned = | |
| 661 | fn ty => | |
| 662 | handleMisaligned | |
| 663 | andalso (Type.equals (ty, Type.real R64) | |
| 664 | orelse Type.equals (ty, Type.word WordSize.word64)) | |
| 665 | fun addr z = concat ["&(", z, ")"] | |
| 666 | fun fetch (z, ty) = | |
| 667 | concat [CType.toString (Type.toCType ty), | |
| 668 | "_fetch(", addr z, ")"] | |
| 669 | fun move' ({dst, src}, ty) = | |
| 670 | concat [CType.toString (Type.toCType ty), | |
| 671 | "_move(", addr dst, ", ", addr src, ");\n"] | |
| 672 | fun store ({dst, src}, ty) = | |
| 673 | concat [CType.toString (Type.toCType ty), | |
| 674 | "_store(", addr dst, ", ", src, ");\n"] | |
| 675 | fun move {dst: string, dstIsMem: bool, | |
| 676 | src: string, srcIsMem: bool, | |
| 677 | ty: Type.t}: string = | |
| 678 | if handleMisaligned ty then | |
| 679 | case (dstIsMem, srcIsMem) of | |
| 680 | (false, false) => concat [dst, " = ", src, ";\n"] | |
| 681 | | (false, true) => concat [dst, " = ", fetch (src, ty), ";\n"] | |
| 682 | | (true, false) => store ({dst = dst, src = src}, ty) | |
| 683 | | (true, true) => move' ({dst = dst, src = src}, ty) | |
| 684 | else | |
| 685 | concat [dst, " = ", src, ";\n"] | |
| 686 | local | |
| 687 | datatype z = datatype Operand.t | |
| 688 | fun toString (z: Operand.t): string = | |
| 689 | case z of | |
| 690 | ArrayOffset {base, index, offset, scale, ty} => | |
| 691 | concat ["X", C.args [Type.toC ty, | |
| 692 | toString base, | |
| 693 | toString index, | |
| 694 | Scale.toString scale, | |
| 695 | C.bytes offset]] | |
| 696 | | Cast (z, ty) => concat ["(", Type.toC ty, ")", toString z] | |
| 697 | | Contents {oper, ty} => contents (ty, toString oper) | |
| 698 | | Frontier => "Frontier" | |
| 699 | | GCState => "GCState" | |
| 700 | | Global g => | |
| 701 | if Global.isRoot g | |
| 702 | then concat ["G", | |
| 703 | C.args [Type.toC (Global.ty g), | |
| 704 | Int.toString (Global.index g)]] | |
| 705 | else concat ["GPNR", C.args [Int.toString (Global.index g)]] | |
| 706 | | Label l => labelToStringIndex l | |
| 707 | | Null => "NULL" | |
| 708 | | Offset {base, offset, ty} => | |
| 709 | concat ["O", C.args [Type.toC ty, | |
| 710 | toString base, | |
| 711 | C.bytes offset]] | |
| 712 | | Real r => RealX.toC r | |
| 713 | | Register r => | |
| 714 | concat [Type.name (Register.ty r), "_", | |
| 715 | Int.toString (Register.index r)] | |
| 716 | | StackOffset s => StackOffset.toString s | |
| 717 | | StackTop => "StackTop" | |
| 718 | | Word w => WordX.toC w | |
| 719 | in | |
| 720 | val operandToString = toString | |
| 721 | end | |
| 722 | fun fetchOperand (z: Operand.t): string = | |
| 723 | if handleMisaligned (Operand.ty z) andalso Operand.isMem z then | |
| 724 | fetch (operandToString z, Operand.ty z) | |
| 725 | else | |
| 726 | operandToString z | |
| 727 | fun outputStatement (s, print) = | |
| 728 | let | |
| 729 | datatype z = datatype Statement.t | |
| 730 | in | |
| 731 | case s of | |
| 732 | Noop => () | |
| 733 | | _ => | |
| 734 | (print "\t" | |
| 735 | ; (case s of | |
| 736 | Move {dst, src} => | |
| 737 | ||
| 738 | (move {dst = operandToString dst, | |
| 739 | dstIsMem = Operand.isMem dst, | |
| 740 | src = operandToString src, | |
| 741 | srcIsMem = Operand.isMem src, | |
| 742 | ty = Operand.ty dst}) | |
| 743 | | Noop => () | |
| 744 | | PrimApp {args, dst, prim} => | |
| 745 | let | |
| 746 | fun call (): string = | |
| 747 | concat | |
| 748 | [Prim.toString prim, | |
| 749 | " (", | |
| 750 | concat | |
| 751 | (List.separate | |
| 752 | (Vector.toListMap (args, fetchOperand), | |
| 753 | ", ")), | |
| 754 | ")"] | |
| 755 | fun app (): string = | |
| 756 | case Prim.name prim of | |
| 757 | Prim.Name.FFI_Symbol {name, ...} => | |
| 758 | concat | |
| 759 | ["((",CType.toString CType.CPointer, | |
| 760 | ")(&", name, "))"] | |
| 761 | | _ => call () | |
| 762 | in | |
| 763 | case dst of | |
| 764 | NONE => (print (app ()) | |
| 765 | ; print ";\n") | |
| 766 | | SOME dst => | |
| 767 | print (move {dst = operandToString dst, | |
| 768 | dstIsMem = Operand.isMem dst, | |
| 769 | src = app (), | |
| 770 | srcIsMem = false, | |
| 771 | ty = Operand.ty dst}) | |
| 772 | end | |
| 773 | | ProfileLabel l => | |
| 774 | C.call ("ProfileLabel", [ProfileLabel.toString l], | |
| 775 | print) | |
| 776 | )) | |
| 777 | end | |
| 778 | val amTimeProfiling = | |
| 779 | !Control.profile = Control.ProfileTimeField | |
| 780 | orelse !Control.profile = Control.ProfileTimeLabel | |
| 781 | fun outputChunk (chunk as Chunk.T {chunkLabel, blocks, regMax, ...}) = | |
| 782 | let | |
| 783 | val {done, print, ...} = outputC () | |
| 784 | fun declareChunks () = | |
| 785 | let | |
| 786 | val {get, ...} = | |
| 787 | Property.get (ChunkLabel.plist, | |
| 788 | Property.initFun (fn _ => ref false)) | |
| 789 | val _ = | |
| 790 | Vector.foreach | |
| 791 | (blocks, fn Block.T {transfer, ...} => | |
| 792 | case transfer of | |
| 793 | Transfer.Call {label, ...} => | |
| 794 | get (labelChunk label) := true | |
| 795 | | _ => ()) | |
| 796 | val _ = | |
| 797 | List.foreach | |
| 798 | (chunks, fn c as Chunk.T {chunkLabel, ...} => | |
| 799 | if ! (get chunkLabel) | |
| 800 | then declareChunk (c, print) | |
| 801 | else ()) | |
| 802 | in | |
| 803 | () | |
| 804 | end | |
| 805 | fun declareProfileLabels () = | |
| 806 | Vector.foreach | |
| 807 | (blocks, fn Block.T {statements, ...} => | |
| 808 | Vector.foreach | |
| 809 | (statements, fn s => | |
| 810 | case s of | |
| 811 | Statement.ProfileLabel l => declareProfileLabel (l, print) | |
| 812 | | _ => ())) | |
| 813 | (* Count how many times each label is jumped to. *) | |
| 814 | fun jump l = | |
| 815 | let | |
| 816 | val {status, ...} = labelInfo l | |
| 817 | in | |
| 818 | case !status of | |
| 819 | None => status := One | |
| 820 | | One => status := Many | |
| 821 | | Many => () | |
| 822 | end | |
| 823 | fun force l = #status (labelInfo l) := Many | |
| 824 | val _ = | |
| 825 | Vector.foreach | |
| 826 | (blocks, fn Block.T {kind, label, transfer, ...} => | |
| 827 | let | |
| 828 | val _ = if Kind.isEntry kind then jump label else () | |
| 829 | datatype z = datatype Transfer.t | |
| 830 | in | |
| 831 | case transfer of | |
| 832 | Arith {overflow, success, ...} => | |
| 833 | (jump overflow; jump success) | |
| 834 | | CCall {func, return, ...} => | |
| 835 | if CFunction.maySwitchThreads func | |
| 836 | then () | |
| 837 | else Option.app (return, jump) | |
| 838 | | Call {label, ...} => jump label | |
| 839 | | Goto dst => jump dst | |
| 840 | | Raise => () | |
| 841 | | Return => () | |
| 842 | | Switch s => Switch.foreachLabel (s, jump) | |
| 843 | end) | |
| 844 | fun push (return: Label.t, size: Bytes.t) = | |
| 845 | (print "\t" | |
| 846 | ; print (move {dst = (StackOffset.toString | |
| 847 | (StackOffset.T | |
| 848 | {offset = Bytes.- (size, Runtime.labelSize ()), | |
| 849 | ty = Type.label return})), | |
| 850 | dstIsMem = true, | |
| 851 | src = operandToString (Operand.Label return), | |
| 852 | srcIsMem = false, | |
| 853 | ty = Type.label return}) | |
| 854 | ; C.push (size, print) | |
| 855 | ; if amTimeProfiling | |
| 856 | then print "\tFlushStackTop();\n" | |
| 857 | else ()) | |
| 858 | fun copyArgs (args: Operand.t vector): string list * (unit -> unit) = | |
| 859 | let | |
| 860 | fun usesStack z = | |
| 861 | case z of | |
| 862 | Operand.ArrayOffset {base, index, ...} => | |
| 863 | (usesStack base) orelse (usesStack index) | |
| 864 | | Operand.Cast (z, _) => | |
| 865 | (usesStack z) | |
| 866 | | Operand.Contents {oper, ...} => | |
| 867 | (usesStack oper) | |
| 868 | | Operand.Offset {base, ...} => | |
| 869 | (usesStack base) | |
| 870 | | Operand.StackOffset _ => true | |
| 871 | | _ => false | |
| 872 | in | |
| 873 | if Vector.exists (args, usesStack) | |
| 874 | then | |
| 875 | let | |
| 876 | val _ = print "\t{\n" | |
| 877 | val c = Counter.new 0 | |
| 878 | val args = | |
| 879 | Vector.toListMap | |
| 880 | (args, fn z => | |
| 881 | if usesStack z | |
| 882 | then | |
| 883 | let | |
| 884 | val ty = Operand.ty z | |
| 885 | val tmp = | |
| 886 | concat ["tmp", | |
| 887 | Int.toString (Counter.next c)] | |
| 888 | val _ = | |
| 889 | ||
| 890 | (concat | |
| 891 | ["\t", Type.toC ty, " ", tmp, " = ", | |
| 892 | fetchOperand z, ";\n"]) | |
| 893 | in | |
| 894 | tmp | |
| 895 | end | |
| 896 | else fetchOperand z) | |
| 897 | in | |
| 898 | (args, fn () => print "\t}\n") | |
| 899 | end | |
| 900 | else (Vector.toListMap (args, fetchOperand), | |
| 901 | fn () => ()) | |
| 902 | end | |
| 903 | val tracePrintLabelCode = | |
| 904 | Trace.trace | |
| 905 | ("CCodegen.printLabelCode", | |
| 906 | fn {block, layedOut, ...} => | |
| 907 | Layout.record [("block", Label.layout (Block.label block)), | |
| 908 | ("layedOut", Bool.layout (!layedOut))], | |
| 909 | Unit.layout) | |
| 910 | fun maybePrintLabel l = | |
| 911 | if ! (#layedOut (labelInfo l)) | |
| 912 | then () | |
| 913 | else gotoLabel l | |
| 914 | and gotoLabel arg = | |
| 915 | traceGotoLabel | |
| 916 | (fn l => | |
| 917 | let | |
| 918 | val info as {layedOut, ...} = labelInfo l | |
| 919 | in | |
| 920 | if !layedOut | |
| 921 | then print (concat ["\tgoto ", Label.toString l, ";\n"]) | |
| 922 | else printLabelCode info | |
| 923 | end) arg | |
| 924 | and printLabelCode arg = | |
| 925 | tracePrintLabelCode | |
| 926 | (fn {block = Block.T {kind, label = l, live, statements, | |
| 927 | transfer, ...}, | |
| 928 | layedOut, status, ...} => | |
| 929 | let | |
| 930 | val _ = layedOut := true | |
| 931 | val _ = | |
| 932 | case !status of | |
| 933 | Many => | |
| 934 | let | |
| 935 | val s = Label.toString l | |
| 936 | in | |
| 937 | print s | |
| 938 | ; print ":\n" | |
| 939 | end | |
| 940 | | _ => () | |
| 941 | fun pop (fi: FrameInfo.t) = | |
| 942 | (C.push (Bytes.~ (Program.frameSize (program, fi)), print) | |
| 943 | ; if amTimeProfiling | |
| 944 | then print "\tFlushStackTop();\n" | |
| 945 | else ()) | |
| 946 | val _ = | |
| 947 | case kind of | |
| 948 | Kind.Cont {frameInfo, ...} => pop frameInfo | |
| 949 | | Kind.CReturn {dst, frameInfo, ...} => | |
| 950 | (case frameInfo of | |
| 951 | NONE => () | |
| 952 | | SOME fi => pop fi | |
| 953 | ; (Option.app | |
| 954 | (dst, fn x => | |
| 955 | let | |
| 956 | val x = Live.toOperand x | |
| 957 | val ty = Operand.ty x | |
| 958 | in | |
| 959 | ||
| 960 | (concat | |
| 961 | ["\t", | |
| 962 | move {dst = operandToString x, | |
| 963 | dstIsMem = Operand.isMem x, | |
| 964 | src = creturn ty, | |
| 965 | srcIsMem = false, | |
| 966 | ty = ty}]) | |
| 967 | end))) | |
| 968 | | Kind.Func => () | |
| 969 | | Kind.Handler {frameInfo, ...} => pop frameInfo | |
| 970 | | Kind.Jump => () | |
| 971 | val _ = | |
| 972 | if 0 = !Control.Native.commented | |
| 973 | then () | |
| 974 | else print (let open Layout | |
| 975 | in toString | |
| 976 | (seq [str "\t/* live: ", | |
| 977 | Vector.layout Live.layout live, | |
| 978 | str " */\n"]) | |
| 979 | end) | |
| 980 | val _ = Vector.foreach (statements, fn s => | |
| 981 | outputStatement (s, print)) | |
| 982 | val _ = outputTransfer (transfer, l) | |
| 983 | in () | |
| 984 | end) arg | |
| 985 | and outputTransfer (t, source: Label.t) = | |
| 986 | let | |
| 987 | fun iff (test, a, b) = | |
| 988 | (force a | |
| 989 | ; C.call ("\tBNZ", [test, Label.toString a], print) | |
| 990 | ; gotoLabel b | |
| 991 | ; maybePrintLabel a) | |
| 992 | datatype z = datatype Transfer.t | |
| 993 | in | |
| 994 | case t of | |
| 995 | Arith {prim, args, dst, overflow, success, ...} => | |
| 996 | let | |
| 997 | val prim = | |
| 998 | let | |
| 999 | datatype z = datatype Prim.Name.t | |
| 1000 | fun const i = | |
| 1001 | case Vector.sub (args, i) of | |
| 1002 | Operand.Word _ => true | |
| 1003 | | _ => false | |
| 1004 | fun const0 () = const 0 | |
| 1005 | fun const1 () = const 1 | |
| 1006 | in | |
| 1007 | case Prim.name prim of | |
| 1008 | Word_addCheck _ => | |
| 1009 | concat [Prim.toString prim, | |
| 1010 | if const0 () | |
| 1011 | then "CX" | |
| 1012 | else if const1 () | |
| 1013 | then "XC" | |
| 1014 | else ""] | |
| 1015 | | Word_mulCheck _ => Prim.toString prim | |
| 1016 | | Word_negCheck _ => Prim.toString prim | |
| 1017 | | Word_subCheck _ => | |
| 1018 | concat [Prim.toString prim, | |
| 1019 | if const0 () | |
| 1020 | then "CX" | |
| 1021 | else if const1 () | |
| 1022 | then "XC" | |
| 1023 | else ""] | |
| 1024 | | _ => Error.bug "CCodegen.outputTransfer: Arith" | |
| 1025 | end | |
| 1026 | val _ = force overflow | |
| 1027 | in | |
| 1028 | print "\t" | |
| 1029 | ; C.call (prim, | |
| 1030 | operandToString dst | |
| 1031 | :: (Vector.toListMap (args, operandToString) | |
| 1032 | @ [Label.toString overflow]), | |
| 1033 | print) | |
| 1034 | ; gotoLabel success | |
| 1035 | ; maybePrintLabel overflow | |
| 1036 | end | |
| 1037 | | CCall {args, frameInfo, func, return} => | |
| 1038 | let | |
| 1039 | val CFunction.T {return = returnTy, | |
| 1040 | target, ...} = func | |
| 1041 | val (args, afterCall) = | |
| 1042 | case frameInfo of | |
| 1043 | NONE => | |
| 1044 | (Vector.toListMap (args, fetchOperand), | |
| 1045 | fn () => ()) | |
| 1046 | | SOME frameInfo => | |
| 1047 | let | |
| 1048 | val size = | |
| 1049 | Program.frameSize (program, frameInfo) | |
| 1050 | val res = copyArgs args | |
| 1051 | val _ = push (valOf return, size) | |
| 1052 | in | |
| 1053 | res | |
| 1054 | end | |
| 1055 | val _ = | |
| 1056 | if CFunction.modifiesFrontier func | |
| 1057 | then print "\tFlushFrontier();\n" | |
| 1058 | else () | |
| 1059 | val _ = | |
| 1060 | if CFunction.readsStackTop func | |
| 1061 | then print "\tFlushStackTop();\n" | |
| 1062 | else () | |
| 1063 | val _ = print "\t" | |
| 1064 | val _ = | |
| 1065 | if Type.isUnit returnTy | |
| 1066 | then () | |
| 1067 | else print (concat [creturn returnTy, " = "]) | |
| 1068 | datatype z = datatype CFunction.Target.t | |
| 1069 | val _ = | |
| 1070 | case target of | |
| 1071 | Direct name => C.call (name, args, print) | |
| 1072 | | Indirect => | |
| 1073 | let | |
| 1074 | val (fptr,args) = | |
| 1075 | case args of | |
| 1076 | (fptr::args) => (fptr, args) | |
| 1077 | | _ => Error.bug "CCodegen.outputTransfer: CCall,Indirect" | |
| 1078 | val name = | |
| 1079 | concat ["(*(", | |
| 1080 | CFunction.cPointerType func, | |
| 1081 | " ", fptr, "))"] | |
| 1082 | in | |
| 1083 | C.call (name, args, print) | |
| 1084 | end | |
| 1085 | val _ = afterCall () | |
| 1086 | val _ = | |
| 1087 | if CFunction.modifiesFrontier func | |
| 1088 | then print "\tCacheFrontier();\n" | |
| 1089 | else () | |
| 1090 | val _ = | |
| 1091 | if CFunction.writesStackTop func | |
| 1092 | then print "\tCacheStackTop();\n" | |
| 1093 | else () | |
| 1094 | val _ = | |
| 1095 | if CFunction.maySwitchThreads func | |
| 1096 | then print "\tReturn();\n" | |
| 1097 | else Option.app (return, gotoLabel) | |
| 1098 | in | |
| 1099 | () | |
| 1100 | end | |
| 1101 | | Call {label, return, ...} => | |
| 1102 | let | |
| 1103 | val dstChunk = labelChunk label | |
| 1104 | val _ = | |
| 1105 | case return of | |
| 1106 | NONE => () | |
| 1107 | | SOME {return, size, ...} => | |
| 1108 | push (return, size) | |
| 1109 | in | |
| 1110 | if ChunkLabel.equals (labelChunk source, dstChunk) | |
| 1111 | then gotoLabel label | |
| 1112 | else | |
| 1113 | C.call ("\tFarJump", | |
| 1114 | [chunkLabelToString dstChunk, | |
| 1115 | labelToStringIndex label], | |
| 1116 | print) | |
| 1117 | end | |
| 1118 | | Goto dst => gotoLabel dst | |
| 1119 | | Raise => C.call ("\tRaise", [], print) | |
| 1120 | | Return => C.call ("\tReturn", [], print) | |
| 1121 | | Switch switch => | |
| 1122 | let | |
| 1123 | fun bool (test: Operand.t, t, f) = | |
| 1124 | iff (operandToString test, t, f) | |
| 1125 | fun doit {cases: (string * Label.t) vector, | |
| 1126 | default: Label.t option, | |
| 1127 | test: Operand.t}: unit = | |
| 1128 | let | |
| 1129 | val test = operandToString test | |
| 1130 | fun switch (cases: (string * Label.t) vector, | |
| 1131 | default: Label.t): unit = | |
| 1132 | (print "switch (" | |
| 1133 | ; print test | |
| 1134 | ; print ") {\n" | |
| 1135 | ; (Vector.foreach | |
| 1136 | (cases, fn (n, l) => (print "case " | |
| 1137 | ; print n | |
| 1138 | ; print ":\n" | |
| 1139 | ; gotoLabel l))) | |
| 1140 | ; print "default:\n" | |
| 1141 | ; gotoLabel default | |
| 1142 | ; print "}\n") | |
| 1143 | in | |
| 1144 | case (Vector.length cases, default) of | |
| 1145 | (0, NONE) => | |
| 1146 | Error.bug "CCodegen.outputTransfers: Switch" | |
| 1147 | | (0, SOME l) => gotoLabel l | |
| 1148 | | (1, NONE) => | |
| 1149 | gotoLabel (#2 (Vector.sub (cases, 0))) | |
| 1150 | | (_, NONE) => | |
| 1151 | switch (Vector.dropPrefix (cases, 1), | |
| 1152 | #2 (Vector.sub (cases, 0))) | |
| 1153 | | (_, SOME l) => switch (cases, l) | |
| 1154 | end | |
| 1155 | val Switch.T {cases, default, test, ...} = switch | |
| 1156 | fun normal () = | |
| 1157 | doit {cases = Vector.map (cases, fn (c, l) => | |
| 1158 | (WordX.toC c, l)), | |
| 1159 | default = default, | |
| 1160 | test = test} | |
| 1161 | in | |
| 1162 | if 2 = Vector.length cases | |
| 1163 | andalso Option.isNone default | |
| 1164 | then | |
| 1165 | let | |
| 1166 | val (c0, l0) = Vector.sub (cases, 0) | |
| 1167 | val (c1, l1) = Vector.sub (cases, 1) | |
| 1168 | val i0 = WordX.toIntInf c0 | |
| 1169 | val i1 = WordX.toIntInf c1 | |
| 1170 | in | |
| 1171 | if i0 = 0 andalso i1 = 1 | |
| 1172 | then bool (test, l1, l0) | |
| 1173 | else if i0 = 1 andalso i1 = 0 | |
| 1174 | then bool (test, l0, l1) | |
| 1175 | else normal () | |
| 1176 | end | |
| 1177 | else normal () | |
| 1178 | end | |
| 1179 | end | |
| 1180 | fun declareRegisters () = | |
| 1181 | List.foreach | |
| 1182 | (CType.all, fn t => | |
| 1183 | let | |
| 1184 | val pre = concat ["\t", CType.toString t, " ", | |
| 1185 | CType.name t, "_"] | |
| 1186 | in | |
| 1187 | Int.for (0, 1 + regMax t, fn i => | |
| 1188 | print (concat [pre, C.int i, ";\n"])) | |
| 1189 | end) | |
| 1190 | fun outputOffsets () = | |
| 1191 | List.foreach | |
| 1192 | ([("ExnStackOffset", GCField.ExnStack), | |
| 1193 | ("FrontierOffset", GCField.Frontier), | |
| 1194 | ("StackBottomOffset", GCField.StackBottom), | |
| 1195 | ("StackTopOffset", GCField.StackTop)], | |
| 1196 | fn (name, f) => | |
| 1197 | print (concat ["#define ", name, " ", | |
| 1198 | Bytes.toString (GCField.offset f), "\n"])) | |
| 1199 | in | |
| 1200 | outputIncludes (["c-chunk.h"], print) | |
| 1201 | ; outputOffsets () | |
| 1202 | ; declareGlobals ("PRIVATE extern ", print) | |
| 1203 | ; declareFFI (chunk, {print = print}) | |
| 1204 | ; declareChunks () | |
| 1205 | ; declareProfileLabels () | |
| 1206 | ; C.callNoSemi ("Chunk", [chunkLabelToString chunkLabel], print) | |
| 1207 | ; print "\n" | |
| 1208 | ; declareRegisters () | |
| 1209 | ; C.callNoSemi ("ChunkSwitch", [chunkLabelToString chunkLabel], | |
| 1210 | print) | |
| 1211 | ; print "\n" | |
| 1212 | ; Vector.foreach (blocks, fn Block.T {kind, label, ...} => | |
| 1213 | if Kind.isEntry kind | |
| 1214 | then (print "case " | |
| 1215 | ; print (labelToStringIndex label) | |
| 1216 | ; print ":\n" | |
| 1217 | ; gotoLabel label) | |
| 1218 | else ()) | |
| 1219 | ; print "EndChunk\n" | |
| 1220 | ; done () | |
| 1221 | end | |
| 1222 | val additionalMainArgs = | |
| 1223 | [chunkLabelToString chunkLabel, | |
| 1224 | labelToStringIndex label] | |
| 1225 | val {print, done, ...} = outputC () | |
| 1226 | fun rest () = | |
| 1227 | (List.foreach (chunks, fn c => declareChunk (c, print)) | |
| 1228 | ; print "PRIVATE struct cont ( *nextChunks []) () = {" | |
| 1229 | ; Vector.foreach (entryLabels, fn l => | |
| 1230 | let | |
| 1231 | val {chunkLabel, ...} = labelInfo l | |
| 1232 | in | |
| 1233 | print "\t" | |
| 1234 | ; C.callNoSemi ("Chunkp", | |
| 1235 | [chunkLabelToString chunkLabel], | |
| 1236 | print) | |
| 1237 | ; print ",\n" | |
| 1238 | end) | |
| 1239 | ; print "};\n") | |
| 1240 | val _ = | |
| 1241 | outputDeclarations {additionalMainArgs = additionalMainArgs, | |
| 1242 | includes = ["c-main.h"], | |
| 1243 | program = program, | |
| 1244 | print = print, | |
| 1245 | rest = rest} | |
| 1246 | val _ = done () | |
| 1247 | val _ = List.foreach (chunks, outputChunk) | |
| 1248 | in | |
| 1249 | () | |
| 1250 | end | |
| 1251 | ||
| 1252 | end |