HCoop / hcoop / debian / mlton.git / blame
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| 7f918cf1 CE |
1 | (* Copyright (C) 2009 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 x86GenerateTransfers(S: X86_GENERATE_TRANSFERS_STRUCTS): X86_GENERATE_TRANSFERS = | |
| 11 | struct | |
| 12 | ||
| 13 | open S | |
| 14 | open x86 | |
| 15 | open x86JumpInfo | |
| 16 | open x86LoopInfo | |
| 17 | open x86Liveness | |
| 18 | open LiveInfo | |
| 19 | open Liveness | |
| 20 | ||
| 21 | local | |
| 22 | open Runtime | |
| 23 | in | |
| 24 | structure CFunction = CFunction | |
| 25 | end | |
| 26 | ||
| 27 | val ones : int * WordSize.t -> WordX.t | |
| 28 | = fn (i, ws) => (WordX.notb o WordX.lshift) | |
| 29 | (WordX.allOnes ws, | |
| 30 | WordX.fromIntInf (IntInf.fromInt i, ws)) | |
| 31 | ||
| 32 | val tracerTop = x86.tracerTop | |
| 33 | ||
| 34 | structure x86LiveTransfers | |
| 35 | = x86LiveTransfers(structure x86 = x86 | |
| 36 | structure x86Liveness = x86Liveness | |
| 37 | structure x86JumpInfo = x86JumpInfo | |
| 38 | structure x86LoopInfo = x86LoopInfo) | |
| 39 | ||
| 40 | val pointerSize = x86MLton.pointerSize | |
| 41 | val wordSize = x86MLton.wordSize | |
| 42 | ||
| 43 | val normalRegs = | |
| 44 | let | |
| 45 | val transferRegs | |
| 46 | = | |
| 47 | (* | |
| 48 | Register.eax:: | |
| 49 | Register.al:: | |
| 50 | *) | |
| 51 | Register.ebx:: | |
| 52 | Register.bl:: | |
| 53 | Register.ecx:: | |
| 54 | Register.cl:: | |
| 55 | Register.edx:: | |
| 56 | Register.dl:: | |
| 57 | Register.edi:: | |
| 58 | Register.esi:: | |
| 59 | (* | |
| 60 | Register.esp:: | |
| 61 | Register.ebp:: | |
| 62 | *) | |
| 63 | nil | |
| 64 | in | |
| 65 | {frontierReg = Register.esp, | |
| 66 | stackTopReg = Register.ebp, | |
| 67 | transferRegs = fn Entry.Jump _ => transferRegs | |
| 68 | | Entry.CReturn _ => Register.eax::Register.al::transferRegs | |
| 69 | | _ => []} | |
| 70 | end | |
| 71 | ||
| 72 | val reserveEspRegs = | |
| 73 | let | |
| 74 | val transferRegs | |
| 75 | = | |
| 76 | (* | |
| 77 | Register.eax:: | |
| 78 | Register.al:: | |
| 79 | *) | |
| 80 | Register.ebx:: | |
| 81 | Register.bl:: | |
| 82 | Register.ecx:: | |
| 83 | Register.cl:: | |
| 84 | Register.edx:: | |
| 85 | Register.dl:: | |
| 86 | (* | |
| 87 | Register.edi:: | |
| 88 | *) | |
| 89 | Register.esi:: | |
| 90 | (* | |
| 91 | Register.esp:: | |
| 92 | Register.ebp:: | |
| 93 | *) | |
| 94 | nil | |
| 95 | in | |
| 96 | {frontierReg = Register.edi, | |
| 97 | stackTopReg = Register.ebp, | |
| 98 | transferRegs = fn Entry.Jump _ => transferRegs | |
| 99 | | Entry.CReturn _ => Register.eax::Register.al::transferRegs | |
| 100 | | _ => []} | |
| 101 | end | |
| 102 | ||
| 103 | val picUsesEbxRegs = | |
| 104 | let | |
| 105 | val transferRegs | |
| 106 | = | |
| 107 | (* | |
| 108 | Register.eax:: | |
| 109 | Register.al:: | |
| 110 | *) | |
| 111 | (* | |
| 112 | Register.ebx:: | |
| 113 | Register.bl:: | |
| 114 | *) | |
| 115 | Register.ecx:: | |
| 116 | Register.cl:: | |
| 117 | Register.edx:: | |
| 118 | Register.dl:: | |
| 119 | Register.edi:: | |
| 120 | Register.esi:: | |
| 121 | (* | |
| 122 | Register.esp:: | |
| 123 | Register.ebp:: | |
| 124 | *) | |
| 125 | nil | |
| 126 | in | |
| 127 | {frontierReg = Register.esp, | |
| 128 | stackTopReg = Register.ebp, | |
| 129 | transferRegs = fn Entry.Jump _ => transferRegs | |
| 130 | | Entry.CReturn _ => Register.eax::Register.al::transferRegs | |
| 131 | | _ => []} | |
| 132 | end | |
| 133 | ||
| 134 | val transferFltRegs : Entry.t -> Int.t = fn Entry.Jump _ => 6 | |
| 135 | | Entry.CReturn _ => 6 | |
| 136 | | _ => 0 | |
| 137 | ||
| 138 | val indexReg = x86.Register.eax | |
| 139 | ||
| 140 | val stackTop = x86MLton.gcState_stackTopContents | |
| 141 | val frontier = x86MLton.gcState_frontierContents | |
| 142 | ||
| 143 | datatype gef = GEF of {generate : gef -> | |
| 144 | {label : Label.t, | |
| 145 | falling : bool, | |
| 146 | unique : bool} -> | |
| 147 | Assembly.t AppendList.t, | |
| 148 | effect : gef -> | |
| 149 | {label : Label.t, | |
| 150 | transfer : Transfer.t} -> | |
| 151 | Assembly.t AppendList.t, | |
| 152 | fall : gef -> | |
| 153 | {label : Label.t, | |
| 154 | live : LiveSet.t} -> | |
| 155 | Assembly.t AppendList.t} | |
| 156 | ||
| 157 | fun generateTransfers {chunk as Chunk.T {data, blocks, ...}, | |
| 158 | optimize: int, | |
| 159 | newProfileLabel: x86.ProfileLabel.t -> x86.ProfileLabel.t, | |
| 160 | liveInfo : x86Liveness.LiveInfo.t, | |
| 161 | jumpInfo : x86JumpInfo.t, | |
| 162 | reserveEsp: bool, | |
| 163 | picUsesEbx: bool} | |
| 164 | = let | |
| 165 | val {frontierReg, stackTopReg, transferRegs} = | |
| 166 | if reserveEsp | |
| 167 | then reserveEspRegs | |
| 168 | else if picUsesEbx | |
| 169 | then picUsesEbxRegs | |
| 170 | else normalRegs | |
| 171 | val allClasses = !x86MLton.Classes.allClasses | |
| 172 | val livenessClasses = !x86MLton.Classes.livenessClasses | |
| 173 | val livenessClasses = ClassSet.add(livenessClasses, | |
| 174 | x86MLton.Classes.StaticNonTemp) | |
| 175 | val nonlivenessClasses = ClassSet.-(allClasses, livenessClasses) | |
| 176 | val holdClasses = !x86MLton.Classes.holdClasses | |
| 177 | val farflushClasses = ClassSet.-(nonlivenessClasses, holdClasses) | |
| 178 | val nearflushClasses = ClassSet.-(nonlivenessClasses, holdClasses) | |
| 179 | val runtimeClasses = !x86MLton.Classes.runtimeClasses | |
| 180 | val cstaticClasses = !x86MLton.Classes.cstaticClasses | |
| 181 | val heapClasses = !x86MLton.Classes.heapClasses | |
| 182 | val ccallflushClasses = ClassSet.+(cstaticClasses, heapClasses) | |
| 183 | ||
| 184 | fun removeHoldMemLocs memlocs | |
| 185 | = MemLocSet.subset | |
| 186 | (memlocs, | |
| 187 | fn m => not (ClassSet.contains(holdClasses, MemLoc.class m))) | |
| 188 | ||
| 189 | val stackAssume = {register = stackTopReg, | |
| 190 | memloc = stackTop (), | |
| 191 | weight = 1024, | |
| 192 | sync = false, | |
| 193 | reserve = false} | |
| 194 | val frontierAssume = {register = frontierReg, | |
| 195 | memloc = frontier (), | |
| 196 | weight = 2048, | |
| 197 | sync = false, | |
| 198 | reserve = false} | |
| 199 | val cStackAssume = {register = Register.esp, | |
| 200 | memloc = x86MLton.c_stackPContents, | |
| 201 | weight = 2048, (* ??? *) | |
| 202 | sync = false, | |
| 203 | reserve = true} | |
| 204 | val picUsesEbxAssume = {register = Register.ebx, | |
| 205 | memloc = x86MLton.globalOffsetTableContents, | |
| 206 | weight = 2048, (* ??? *) | |
| 207 | sync = false, | |
| 208 | reserve = true} | |
| 209 | ||
| 210 | fun blockAssumes l = | |
| 211 | let | |
| 212 | val l = frontierAssume :: stackAssume :: l | |
| 213 | val l = if reserveEsp then cStackAssume :: l else l | |
| 214 | val l = if picUsesEbx then picUsesEbxAssume :: l else l | |
| 215 | in | |
| 216 | Assembly.directive_assume {assumes = l } | |
| 217 | end | |
| 218 | ||
| 219 | fun runtimeTransfer live setup trans | |
| 220 | = AppendList.appends | |
| 221 | [AppendList.single | |
| 222 | (Assembly.directive_force | |
| 223 | {commit_memlocs = removeHoldMemLocs live, | |
| 224 | commit_classes = ClassSet.empty, | |
| 225 | remove_memlocs = MemLocSet.empty, | |
| 226 | remove_classes = ClassSet.empty, | |
| 227 | dead_memlocs = MemLocSet.empty, | |
| 228 | dead_classes = ClassSet.empty}), | |
| 229 | setup, | |
| 230 | AppendList.fromList | |
| 231 | [(Assembly.directive_clearflt ()), | |
| 232 | (Assembly.directive_force | |
| 233 | {commit_memlocs = MemLocSet.empty, | |
| 234 | commit_classes = farflushClasses, | |
| 235 | remove_memlocs = MemLocSet.empty, | |
| 236 | remove_classes = ClassSet.empty, | |
| 237 | dead_memlocs = MemLocSet.empty, | |
| 238 | dead_classes = ClassSet.empty})], | |
| 239 | trans] | |
| 240 | ||
| 241 | fun farEntry l = AppendList.cons (blockAssumes [], l) | |
| 242 | ||
| 243 | fun farTransfer live setup trans | |
| 244 | = AppendList.appends | |
| 245 | [AppendList.single | |
| 246 | (Assembly.directive_force | |
| 247 | {commit_memlocs = removeHoldMemLocs live, | |
| 248 | commit_classes = ClassSet.empty, | |
| 249 | remove_memlocs = MemLocSet.empty, | |
| 250 | remove_classes = ClassSet.empty, | |
| 251 | dead_memlocs = MemLocSet.empty, | |
| 252 | dead_classes = ClassSet.empty}), | |
| 253 | setup, | |
| 254 | AppendList.fromList | |
| 255 | [(Assembly.directive_cache | |
| 256 | {caches = [{register = stackTopReg, | |
| 257 | memloc = stackTop (), | |
| 258 | reserve = true}, | |
| 259 | {register = frontierReg, | |
| 260 | memloc = frontier (), | |
| 261 | reserve = true}]}), | |
| 262 | (Assembly.directive_clearflt ()), | |
| 263 | (Assembly.directive_force | |
| 264 | {commit_memlocs = MemLocSet.empty, | |
| 265 | commit_classes = farflushClasses, | |
| 266 | remove_memlocs = MemLocSet.empty, | |
| 267 | remove_classes = ClassSet.empty, | |
| 268 | dead_memlocs = MemLocSet.empty, | |
| 269 | dead_classes = ClassSet.empty})], | |
| 270 | trans] | |
| 271 | ||
| 272 | val profileStackTopCommit' = | |
| 273 | x86.Assembly.directive_force | |
| 274 | {commit_memlocs = MemLocSet.singleton (stackTop ()), | |
| 275 | commit_classes = ClassSet.empty, | |
| 276 | remove_memlocs = MemLocSet.empty, | |
| 277 | remove_classes = ClassSet.empty, | |
| 278 | dead_memlocs = MemLocSet.empty, | |
| 279 | dead_classes = ClassSet.empty} | |
| 280 | val profileStackTopCommit = | |
| 281 | if !Control.profile <> Control.ProfileNone | |
| 282 | then AppendList.single profileStackTopCommit' | |
| 283 | else AppendList.empty | |
| 284 | ||
| 285 | val _ | |
| 286 | = Assert.assert | |
| 287 | ("x86GenerateTransfers.verifyLiveInfo", | |
| 288 | fn () => x86Liveness.LiveInfo.verifyLiveInfo {chunk = chunk, | |
| 289 | liveInfo = liveInfo}) | |
| 290 | val _ | |
| 291 | = Assert.assert | |
| 292 | ("x86GenerateTransfers.verifyJumpInfo", | |
| 293 | fn () => x86JumpInfo.verifyJumpInfo {chunk = chunk, | |
| 294 | jumpInfo = jumpInfo}) | |
| 295 | ||
| 296 | val _ | |
| 297 | = Assert.assert | |
| 298 | ("x86GenerateTransfers.verifyEntryTransfer", | |
| 299 | fn () => x86EntryTransfer.verifyEntryTransfer {chunk = chunk}) | |
| 300 | ||
| 301 | local | |
| 302 | val {get: Label.t -> {block:Block.t}, | |
| 303 | set, | |
| 304 | destroy} | |
| 305 | = Property.destGetSetOnce | |
| 306 | (Label.plist, Property.initRaise ("gotoInfo", Label.layout)) | |
| 307 | ||
| 308 | val labels | |
| 309 | = List.fold | |
| 310 | (blocks, [], | |
| 311 | fn (block as Block.T {entry, ...}, labels) | |
| 312 | => let | |
| 313 | val label = Entry.label entry | |
| 314 | in | |
| 315 | set(label, {block = block}) ; | |
| 316 | label::labels | |
| 317 | end) | |
| 318 | ||
| 319 | fun loop labels | |
| 320 | = let | |
| 321 | val (labels, b) | |
| 322 | = List.fold | |
| 323 | (labels, ([], false), | |
| 324 | fn (label, (labels, b)) | |
| 325 | => case x86JumpInfo.getNear (jumpInfo, label) | |
| 326 | of x86JumpInfo.Count 0 | |
| 327 | => let | |
| 328 | val {block = Block.T {transfer, ...}} | |
| 329 | = get label | |
| 330 | in | |
| 331 | List.foreach | |
| 332 | (Transfer.nearTargets transfer, | |
| 333 | fn label | |
| 334 | => x86JumpInfo.decNear (jumpInfo, label)); | |
| 335 | (labels, true) | |
| 336 | end | |
| 337 | | _ => (label::labels, b)) | |
| 338 | in | |
| 339 | if b | |
| 340 | then loop labels | |
| 341 | else List.map (labels, #block o get) | |
| 342 | end | |
| 343 | val blocks = loop labels | |
| 344 | ||
| 345 | val _ = destroy () | |
| 346 | in | |
| 347 | val chunk = Chunk.T {data = data, blocks = blocks} | |
| 348 | end | |
| 349 | ||
| 350 | val loopInfo | |
| 351 | = x86LoopInfo.createLoopInfo {chunk = chunk, farLoops = false} | |
| 352 | val isLoopHeader | |
| 353 | = fn label => isLoopHeader(loopInfo, label) | |
| 354 | handle _ => false | |
| 355 | ||
| 356 | val liveTransfers | |
| 357 | = x86LiveTransfers.computeLiveTransfers | |
| 358 | {chunk = chunk, | |
| 359 | transferRegs = transferRegs, | |
| 360 | transferFltRegs = transferFltRegs, | |
| 361 | liveInfo = liveInfo, | |
| 362 | jumpInfo = jumpInfo, | |
| 363 | loopInfo = loopInfo} | |
| 364 | ||
| 365 | val getLiveRegsTransfers | |
| 366 | = #1 o x86LiveTransfers.getLiveTransfers | |
| 367 | val getLiveFltRegsTransfers | |
| 368 | = #2 o x86LiveTransfers.getLiveTransfers | |
| 369 | ||
| 370 | val {get = getLayoutInfo : Label.t -> Block.t option, | |
| 371 | set = setLayoutInfo, | |
| 372 | destroy = destLayoutInfo} | |
| 373 | = Property.destGetSet(Label.plist, | |
| 374 | Property.initRaise ("layoutInfo", Label.layout)) | |
| 375 | val _ | |
| 376 | = List.foreach | |
| 377 | (blocks, | |
| 378 | fn block as Block.T {entry, ...} | |
| 379 | => let | |
| 380 | val label = Entry.label entry | |
| 381 | in | |
| 382 | setLayoutInfo(label, SOME block) | |
| 383 | end) | |
| 384 | ||
| 385 | val {get = getProfileLabel : Label.t -> ProfileLabel.t option, | |
| 386 | set = setProfileLabel, | |
| 387 | destroy = destProfileLabel} | |
| 388 | = Property.destGetSetOnce | |
| 389 | (Label.plist, | |
| 390 | Property.initRaise ("profileLabel", Label.layout)) | |
| 391 | val _ | |
| 392 | = List.foreach | |
| 393 | (blocks, | |
| 394 | fn Block.T {entry, profileLabel, ...} | |
| 395 | => let | |
| 396 | val label = Entry.label entry | |
| 397 | in | |
| 398 | setProfileLabel(label, profileLabel) | |
| 399 | end) | |
| 400 | ||
| 401 | local | |
| 402 | val stack = ref [] | |
| 403 | val queue = ref (Queue.empty ()) | |
| 404 | in | |
| 405 | fun enque x = queue := Queue.enque(!queue, x) | |
| 406 | fun push x = stack := x::(!stack) | |
| 407 | ||
| 408 | fun deque () = (case (!stack) | |
| 409 | of [] => (case Queue.deque(!queue) | |
| 410 | of NONE => NONE | |
| 411 | | SOME(queue', x) => (queue := queue'; | |
| 412 | SOME x)) | |
| 413 | | x::stack' => (stack := stack'; | |
| 414 | SOME x)) | |
| 415 | end | |
| 416 | ||
| 417 | fun pushCompensationBlock {label, id} | |
| 418 | = let | |
| 419 | val label' = Label.new label | |
| 420 | val live = getLive(liveInfo, label) | |
| 421 | val profileLabel = getProfileLabel label | |
| 422 | val profileLabel' = Option.map (profileLabel, newProfileLabel) | |
| 423 | val block | |
| 424 | = Block.T {entry = Entry.jump {label = label'}, | |
| 425 | profileLabel = profileLabel', | |
| 426 | statements | |
| 427 | = (Assembly.directive_restoreregalloc | |
| 428 | {live = MemLocSet.add | |
| 429 | (MemLocSet.add | |
| 430 | (LiveSet.toMemLocSet live, | |
| 431 | stackTop ()), | |
| 432 | frontier ()), | |
| 433 | id = id}):: | |
| 434 | nil, | |
| 435 | transfer = Transfer.goto {target = label}} | |
| 436 | in | |
| 437 | setLive(liveInfo, label', live); | |
| 438 | setProfileLabel(label', profileLabel'); | |
| 439 | incNear(jumpInfo, label'); | |
| 440 | Assert.assert("x86GenerateTransfers.pushCompensationBlock", | |
| 441 | fn () => getNear(jumpInfo, label') = Count 1); | |
| 442 | x86LiveTransfers.setLiveTransfersEmpty(liveTransfers, label'); | |
| 443 | setLayoutInfo(label', SOME block); | |
| 444 | push label'; | |
| 445 | label' | |
| 446 | end | |
| 447 | ||
| 448 | val c_stackP = x86MLton.c_stackPContentsOperand | |
| 449 | ||
| 450 | fun cacheEsp () = | |
| 451 | if reserveEsp | |
| 452 | then AppendList.empty | |
| 453 | else | |
| 454 | AppendList.single | |
| 455 | ((* explicit cache in case there are no args *) | |
| 456 | Assembly.directive_cache | |
| 457 | {caches = [{register = Register.esp, | |
| 458 | memloc = valOf (Operand.deMemloc c_stackP), | |
| 459 | reserve = true}]}) | |
| 460 | ||
| 461 | fun unreserveEsp () = | |
| 462 | if reserveEsp | |
| 463 | then AppendList.empty | |
| 464 | else AppendList.single (Assembly.directive_unreserve | |
| 465 | {registers = [Register.esp]}) | |
| 466 | ||
| 467 | local | |
| 468 | val set: (word * String.t * Label.t) HashSet.t = | |
| 469 | HashSet.new {hash = #1} | |
| 470 | in | |
| 471 | fun makeDarwinSymbolStubLabel name = | |
| 472 | let | |
| 473 | val hash = String.hash name | |
| 474 | in | |
| 475 | (#3 o HashSet.lookupOrInsert) | |
| 476 | (set, hash, | |
| 477 | fn (hash', name', _) => | |
| 478 | hash = hash' andalso name = name', | |
| 479 | fn () => | |
| 480 | (hash, name, | |
| 481 | Label.newString (concat ["L_", name, "_stub"]))) | |
| 482 | end | |
| 483 | ||
| 484 | fun makeDarwinSymbolStubs () = | |
| 485 | HashSet.fold | |
| 486 | (set, [], fn ((_, name, label), assembly) => | |
| 487 | (Assembly.pseudoop_symbol_stub ()) :: | |
| 488 | (Assembly.label label) :: | |
| 489 | (Assembly.pseudoop_indirect_symbol (Label.fromString name)) :: | |
| 490 | (Assembly.instruction_hlt ()) :: | |
| 491 | (Assembly.instruction_hlt ()) :: | |
| 492 | (Assembly.instruction_hlt ()) :: | |
| 493 | (Assembly.instruction_hlt ()) :: | |
| 494 | (Assembly.instruction_hlt ()) :: | |
| 495 | assembly) | |
| 496 | end | |
| 497 | ||
| 498 | datatype z = datatype Entry.t | |
| 499 | datatype z = datatype Transfer.t | |
| 500 | fun generateAll (gef as GEF {effect,...}) | |
| 501 | {label, falling, unique} : | |
| 502 | Assembly.t AppendList.t | |
| 503 | = (case getLayoutInfo label | |
| 504 | of NONE => AppendList.empty | |
| 505 | | SOME (Block.T {entry, profileLabel, statements, transfer}) | |
| 506 | => let | |
| 507 | val _ = setLayoutInfo(label, NONE) | |
| 508 | (* | |
| 509 | val isLoopHeader = fn _ => false | |
| 510 | *) | |
| 511 | fun near label = | |
| 512 | let | |
| 513 | val align = | |
| 514 | if isLoopHeader label handle _ => false | |
| 515 | then | |
| 516 | AppendList.single | |
| 517 | (Assembly.pseudoop_p2align | |
| 518 | (Immediate.int 4, | |
| 519 | NONE, | |
| 520 | SOME (Immediate.int 7))) | |
| 521 | else if falling | |
| 522 | then AppendList.empty | |
| 523 | else | |
| 524 | AppendList.single | |
| 525 | (Assembly.pseudoop_p2align | |
| 526 | (Immediate.int 4, | |
| 527 | NONE, | |
| 528 | NONE)) | |
| 529 | val assumes = | |
| 530 | if falling andalso unique | |
| 531 | then AppendList.empty | |
| 532 | else | |
| 533 | (* near entry & live transfer assumptions *) | |
| 534 | AppendList.fromList | |
| 535 | [(blockAssumes | |
| 536 | (List.map | |
| 537 | (getLiveRegsTransfers | |
| 538 | (liveTransfers, label), | |
| 539 | fn (memloc,register,sync) | |
| 540 | => {register = register, | |
| 541 | memloc = memloc, | |
| 542 | sync = sync, | |
| 543 | weight = 1024, | |
| 544 | reserve = false}))), | |
| 545 | (Assembly.directive_fltassume | |
| 546 | {assumes | |
| 547 | = (List.map | |
| 548 | (getLiveFltRegsTransfers | |
| 549 | (liveTransfers, label), | |
| 550 | fn (memloc,sync) | |
| 551 | => {memloc = memloc, | |
| 552 | sync = sync, | |
| 553 | weight = 1024}))})] | |
| 554 | in | |
| 555 | AppendList.appends | |
| 556 | [align, | |
| 557 | AppendList.single | |
| 558 | (Assembly.label label), | |
| 559 | AppendList.fromList | |
| 560 | (ProfileLabel.toAssemblyOpt profileLabel), | |
| 561 | assumes] | |
| 562 | end | |
| 563 | val pre | |
| 564 | = case entry | |
| 565 | of Jump {label} | |
| 566 | => near label | |
| 567 | | CReturn {dsts, frameInfo, func, label} | |
| 568 | => let | |
| 569 | fun getReturn () = | |
| 570 | if Vector.isEmpty dsts | |
| 571 | then AppendList.empty | |
| 572 | else let | |
| 573 | val srcs = | |
| 574 | Vector.fromList | |
| 575 | (List.map | |
| 576 | (Operand.cReturnTemps | |
| 577 | (CFunction.return func), | |
| 578 | #dst)) | |
| 579 | in | |
| 580 | (AppendList.fromList o Vector.fold2) | |
| 581 | (dsts, srcs, [], fn ((dst,dstsize),src,stmts) => | |
| 582 | case Size.class dstsize of | |
| 583 | Size.INT => | |
| 584 | (x86.Assembly.instruction_mov | |
| 585 | {dst = dst, | |
| 586 | src = Operand.memloc src, | |
| 587 | size = dstsize})::stmts | |
| 588 | | Size.FLT => | |
| 589 | (x86.Assembly.instruction_pfmov | |
| 590 | {dst = dst, | |
| 591 | src = Operand.memloc src, | |
| 592 | size = dstsize})::stmts | |
| 593 | | _ => Error.bug "x86GenerateTransfers.generateAll: CReturn") | |
| 594 | end | |
| 595 | in | |
| 596 | case frameInfo of | |
| 597 | SOME fi => | |
| 598 | let | |
| 599 | val FrameInfo.T {size, frameLayoutsIndex} | |
| 600 | = fi | |
| 601 | val finish | |
| 602 | = AppendList.appends | |
| 603 | [let | |
| 604 | val stackTop | |
| 605 | = x86MLton.gcState_stackTopContentsOperand () | |
| 606 | val bytes | |
| 607 | = x86.Operand.immediate_int (~ size) | |
| 608 | in | |
| 609 | AppendList.cons | |
| 610 | ((* stackTop += bytes *) | |
| 611 | x86.Assembly.instruction_binal | |
| 612 | {oper = x86.Instruction.ADD, | |
| 613 | dst = stackTop, | |
| 614 | src = bytes, | |
| 615 | size = pointerSize}, | |
| 616 | profileStackTopCommit) | |
| 617 | end, | |
| 618 | (* assignTo dst *) | |
| 619 | getReturn ()] | |
| 620 | in | |
| 621 | AppendList.appends | |
| 622 | [AppendList.fromList | |
| 623 | [Assembly.pseudoop_p2align | |
| 624 | (Immediate.int 4, NONE, NONE), | |
| 625 | Assembly.pseudoop_long | |
| 626 | [Immediate.int frameLayoutsIndex], | |
| 627 | Assembly.label label], | |
| 628 | AppendList.fromList | |
| 629 | (ProfileLabel.toAssemblyOpt profileLabel), | |
| 630 | if CFunction.maySwitchThreads func | |
| 631 | then (* entry from far assumptions *) | |
| 632 | farEntry finish | |
| 633 | else (* near entry & live transfer assumptions *) | |
| 634 | AppendList.append | |
| 635 | (AppendList.fromList | |
| 636 | [(blockAssumes | |
| 637 | (List.map | |
| 638 | (getLiveRegsTransfers | |
| 639 | (liveTransfers, label), | |
| 640 | fn (memloc,register,sync) | |
| 641 | => {register = register, | |
| 642 | memloc = memloc, | |
| 643 | sync = sync, | |
| 644 | weight = 1024, | |
| 645 | reserve = false}))), | |
| 646 | (Assembly.directive_fltassume | |
| 647 | {assumes | |
| 648 | = (List.map | |
| 649 | (getLiveFltRegsTransfers | |
| 650 | (liveTransfers, label), | |
| 651 | fn (memloc,sync) | |
| 652 | => {memloc = memloc, | |
| 653 | sync = sync, | |
| 654 | weight = 1024}))})], | |
| 655 | finish)] | |
| 656 | end | |
| 657 | | NONE => | |
| 658 | AppendList.append (near label, getReturn ()) | |
| 659 | end | |
| 660 | | Func {label,...} | |
| 661 | => AppendList.appends | |
| 662 | [AppendList.fromList | |
| 663 | [Assembly.pseudoop_p2align | |
| 664 | (Immediate.int 4, NONE, NONE), | |
| 665 | Assembly.pseudoop_global label, | |
| 666 | Assembly.pseudoop_hidden label, | |
| 667 | Assembly.label label], | |
| 668 | AppendList.fromList | |
| 669 | (ProfileLabel.toAssemblyOpt profileLabel), | |
| 670 | (* entry from far assumptions *) | |
| 671 | (farEntry AppendList.empty)] | |
| 672 | | Cont {label, | |
| 673 | frameInfo = FrameInfo.T {size, | |
| 674 | frameLayoutsIndex}, | |
| 675 | ...} | |
| 676 | => | |
| 677 | AppendList.appends | |
| 678 | [AppendList.fromList | |
| 679 | [Assembly.pseudoop_p2align | |
| 680 | (Immediate.int 4, NONE, NONE), | |
| 681 | Assembly.pseudoop_long | |
| 682 | [Immediate.int frameLayoutsIndex], | |
| 683 | Assembly.label label], | |
| 684 | AppendList.fromList | |
| 685 | (ProfileLabel.toAssemblyOpt profileLabel), | |
| 686 | (* entry from far assumptions *) | |
| 687 | (farEntry | |
| 688 | (let | |
| 689 | val stackTop | |
| 690 | = x86MLton.gcState_stackTopContentsOperand () | |
| 691 | val bytes | |
| 692 | = x86.Operand.immediate_int (~ size) | |
| 693 | in | |
| 694 | AppendList.cons | |
| 695 | ((* stackTop += bytes *) | |
| 696 | x86.Assembly.instruction_binal | |
| 697 | {oper = x86.Instruction.ADD, | |
| 698 | dst = stackTop, | |
| 699 | src = bytes, | |
| 700 | size = pointerSize}, | |
| 701 | profileStackTopCommit) | |
| 702 | end))] | |
| 703 | | Handler {frameInfo = (FrameInfo.T | |
| 704 | {frameLayoutsIndex, size}), | |
| 705 | label, | |
| 706 | ...} | |
| 707 | => AppendList.appends | |
| 708 | [AppendList.fromList | |
| 709 | [Assembly.pseudoop_p2align | |
| 710 | (Immediate.int 4, NONE, NONE), | |
| 711 | Assembly.pseudoop_long | |
| 712 | [Immediate.int frameLayoutsIndex], | |
| 713 | Assembly.label label], | |
| 714 | AppendList.fromList | |
| 715 | (ProfileLabel.toAssemblyOpt profileLabel), | |
| 716 | (* entry from far assumptions *) | |
| 717 | (farEntry | |
| 718 | (let | |
| 719 | val stackTop | |
| 720 | = x86MLton.gcState_stackTopContentsOperand () | |
| 721 | val bytes | |
| 722 | = x86.Operand.immediate_int (~ size) | |
| 723 | in | |
| 724 | AppendList.cons | |
| 725 | ((* stackTop += bytes *) | |
| 726 | x86.Assembly.instruction_binal | |
| 727 | {oper = x86.Instruction.ADD, | |
| 728 | dst = stackTop, | |
| 729 | src = bytes, | |
| 730 | size = pointerSize}, | |
| 731 | profileStackTopCommit) | |
| 732 | end))] | |
| 733 | val pre | |
| 734 | = AppendList.appends | |
| 735 | [if !Control.Native.commented > 1 | |
| 736 | then AppendList.single | |
| 737 | (Assembly.comment (Entry.toString entry)) | |
| 738 | else AppendList.empty, | |
| 739 | if !Control.Native.commented > 2 | |
| 740 | then AppendList.single | |
| 741 | (Assembly.comment | |
| 742 | (LiveSet.fold | |
| 743 | (getLive(liveInfo, label), | |
| 744 | "", | |
| 745 | fn (memloc, s) | |
| 746 | => concat [s, | |
| 747 | MemLoc.toString memloc, | |
| 748 | " "]))) | |
| 749 | else AppendList.empty, | |
| 750 | pre] | |
| 751 | ||
| 752 | val (statements,_) | |
| 753 | = List.foldr | |
| 754 | (statements, | |
| 755 | ([], | |
| 756 | Liveness.liveIn | |
| 757 | (livenessTransfer {transfer = transfer, | |
| 758 | liveInfo = liveInfo})), | |
| 759 | fn (assembly,(statements,live)) | |
| 760 | => let | |
| 761 | val Liveness.T {liveIn,dead, ...} | |
| 762 | = livenessAssembly {assembly = assembly, | |
| 763 | live = live} | |
| 764 | in | |
| 765 | (if LiveSet.isEmpty dead | |
| 766 | then assembly::statements | |
| 767 | else assembly:: | |
| 768 | (Assembly.directive_force | |
| 769 | {commit_memlocs = MemLocSet.empty, | |
| 770 | commit_classes = ClassSet.empty, | |
| 771 | remove_memlocs = MemLocSet.empty, | |
| 772 | remove_classes = ClassSet.empty, | |
| 773 | dead_memlocs = LiveSet.toMemLocSet dead, | |
| 774 | dead_classes = ClassSet.empty}):: | |
| 775 | statements, | |
| 776 | liveIn) | |
| 777 | end) | |
| 778 | ||
| 779 | val statements = AppendList.fromList statements | |
| 780 | ||
| 781 | val transfer = effect gef {label = label, | |
| 782 | transfer = transfer} | |
| 783 | in | |
| 784 | AppendList.appends | |
| 785 | [pre, | |
| 786 | statements, | |
| 787 | transfer] | |
| 788 | end) | |
| 789 | ||
| 790 | and effectDefault (gef as GEF {fall,...}) | |
| 791 | {label, transfer} : Assembly.t AppendList.t | |
| 792 | = AppendList.append | |
| 793 | (if !Control.Native.commented > 1 | |
| 794 | then AppendList.single | |
| 795 | (Assembly.comment | |
| 796 | (Transfer.toString transfer)) | |
| 797 | else AppendList.empty, | |
| 798 | case transfer | |
| 799 | of Goto {target} | |
| 800 | => fall gef | |
| 801 | {label = target, | |
| 802 | live = getLive(liveInfo, target)} | |
| 803 | | Iff {condition, truee, falsee} | |
| 804 | => let | |
| 805 | val condition_neg | |
| 806 | = Instruction.condition_negate condition | |
| 807 | ||
| 808 | val truee_live | |
| 809 | = getLive(liveInfo, truee) | |
| 810 | val truee_live_length | |
| 811 | = LiveSet.size truee_live | |
| 812 | ||
| 813 | val falsee_live | |
| 814 | = getLive(liveInfo, falsee) | |
| 815 | val falsee_live_length | |
| 816 | = LiveSet.size falsee_live | |
| 817 | ||
| 818 | fun fall_truee () | |
| 819 | = let | |
| 820 | val id = Directive.Id.new () | |
| 821 | val falsee' | |
| 822 | = pushCompensationBlock {label = falsee, | |
| 823 | id = id}; | |
| 824 | in | |
| 825 | AppendList.append | |
| 826 | (AppendList.fromList | |
| 827 | [Assembly.directive_force | |
| 828 | {commit_memlocs = MemLocSet.empty, | |
| 829 | commit_classes = nearflushClasses, | |
| 830 | remove_memlocs = MemLocSet.empty, | |
| 831 | remove_classes = ClassSet.empty, | |
| 832 | dead_memlocs = MemLocSet.empty, | |
| 833 | dead_classes = ClassSet.empty}, | |
| 834 | Assembly.instruction_jcc | |
| 835 | {condition = condition_neg, | |
| 836 | target = Operand.label falsee'}, | |
| 837 | Assembly.directive_saveregalloc | |
| 838 | {live = MemLocSet.add | |
| 839 | (MemLocSet.add | |
| 840 | (LiveSet.toMemLocSet falsee_live, | |
| 841 | stackTop ()), | |
| 842 | frontier ()), | |
| 843 | id = id}], | |
| 844 | (fall gef | |
| 845 | {label = truee, | |
| 846 | live = truee_live})) | |
| 847 | end | |
| 848 | ||
| 849 | fun fall_falsee () | |
| 850 | = let | |
| 851 | val id = Directive.Id.new () | |
| 852 | val truee' = pushCompensationBlock {label = truee, | |
| 853 | id = id}; | |
| 854 | in | |
| 855 | AppendList.append | |
| 856 | (AppendList.fromList | |
| 857 | [Assembly.directive_force | |
| 858 | {commit_memlocs = MemLocSet.empty, | |
| 859 | commit_classes = nearflushClasses, | |
| 860 | remove_memlocs = MemLocSet.empty, | |
| 861 | remove_classes = ClassSet.empty, | |
| 862 | dead_memlocs = MemLocSet.empty, | |
| 863 | dead_classes = ClassSet.empty}, | |
| 864 | Assembly.instruction_jcc | |
| 865 | {condition = condition, | |
| 866 | target = Operand.label truee'}, | |
| 867 | Assembly.directive_saveregalloc | |
| 868 | {live = MemLocSet.add | |
| 869 | (MemLocSet.add | |
| 870 | (LiveSet.toMemLocSet truee_live, | |
| 871 | stackTop ()), | |
| 872 | frontier ()), | |
| 873 | id = id}], | |
| 874 | (fall gef | |
| 875 | {label = falsee, | |
| 876 | live = falsee_live})) | |
| 877 | end | |
| 878 | in | |
| 879 | case (getLayoutInfo truee, | |
| 880 | getLayoutInfo falsee) | |
| 881 | of (NONE, SOME _) => fall_falsee () | |
| 882 | | (SOME _, NONE) => fall_truee () | |
| 883 | | _ | |
| 884 | => let | |
| 885 | fun default' () | |
| 886 | = if truee_live_length <= falsee_live_length | |
| 887 | then fall_falsee () | |
| 888 | else fall_truee () | |
| 889 | ||
| 890 | fun default () | |
| 891 | = case (getNear(jumpInfo, truee), | |
| 892 | getNear(jumpInfo, falsee)) | |
| 893 | of (Count 1, Count 1) => default' () | |
| 894 | | (Count 1, _) => fall_truee () | |
| 895 | | (_, Count 1) => fall_falsee () | |
| 896 | | _ => default' () | |
| 897 | in | |
| 898 | case (getLoopDistance(loopInfo, label, truee), | |
| 899 | getLoopDistance(loopInfo, label, falsee)) | |
| 900 | of (NONE, NONE) => default () | |
| 901 | | (SOME _, NONE) => fall_truee () | |
| 902 | | (NONE, SOME _) => fall_falsee () | |
| 903 | | (SOME dtruee, SOME dfalsee) | |
| 904 | => (case Int.compare(dtruee, dfalsee) | |
| 905 | of EQUAL => default () | |
| 906 | | LESS => fall_falsee () | |
| 907 | | GREATER => fall_truee ()) | |
| 908 | end | |
| 909 | end | |
| 910 | | Switch {test, cases, default} | |
| 911 | => let | |
| 912 | val Liveness.T {dead, ...} | |
| 913 | = livenessTransfer {transfer = transfer, | |
| 914 | liveInfo = liveInfo} | |
| 915 | ||
| 916 | val size | |
| 917 | = case Operand.size test | |
| 918 | of SOME size => size | |
| 919 | | NONE => Size.LONG | |
| 920 | ||
| 921 | val default_live | |
| 922 | = getLive(liveInfo, default) | |
| 923 | ||
| 924 | val cases | |
| 925 | = Transfer.Cases.mapToList | |
| 926 | (cases, | |
| 927 | fn (k, target) | |
| 928 | => let | |
| 929 | val target_live | |
| 930 | = getLive(liveInfo, target) | |
| 931 | val id = Directive.Id.new () | |
| 932 | val target' = pushCompensationBlock | |
| 933 | {label = target, | |
| 934 | id = id} | |
| 935 | in | |
| 936 | AppendList.fromList | |
| 937 | [Assembly.instruction_cmp | |
| 938 | {src1 = test, | |
| 939 | src2 = Operand.immediate_word k, | |
| 940 | size = size}, | |
| 941 | Assembly.instruction_jcc | |
| 942 | {condition = Instruction.E, | |
| 943 | target = Operand.label target'}, | |
| 944 | Assembly.directive_saveregalloc | |
| 945 | {live = MemLocSet.add | |
| 946 | (MemLocSet.add | |
| 947 | (LiveSet.toMemLocSet target_live, | |
| 948 | stackTop ()), | |
| 949 | frontier ()), | |
| 950 | id = id}] | |
| 951 | end) | |
| 952 | in | |
| 953 | AppendList.appends | |
| 954 | [AppendList.single | |
| 955 | (Assembly.directive_force | |
| 956 | {commit_memlocs = MemLocSet.empty, | |
| 957 | commit_classes = nearflushClasses, | |
| 958 | remove_memlocs = MemLocSet.empty, | |
| 959 | remove_classes = ClassSet.empty, | |
| 960 | dead_memlocs = MemLocSet.empty, | |
| 961 | dead_classes = ClassSet.empty}), | |
| 962 | AppendList.appends cases, | |
| 963 | if LiveSet.isEmpty dead | |
| 964 | then AppendList.empty | |
| 965 | else AppendList.single | |
| 966 | (Assembly.directive_force | |
| 967 | {commit_memlocs = MemLocSet.empty, | |
| 968 | commit_classes = ClassSet.empty, | |
| 969 | remove_memlocs = MemLocSet.empty, | |
| 970 | remove_classes = ClassSet.empty, | |
| 971 | dead_memlocs = LiveSet.toMemLocSet dead, | |
| 972 | dead_classes = ClassSet.empty}), | |
| 973 | (fall gef | |
| 974 | {label = default, | |
| 975 | live = default_live})] | |
| 976 | end | |
| 977 | | Tail {target, live} | |
| 978 | => (* flushing at far transfer *) | |
| 979 | (farTransfer live | |
| 980 | AppendList.empty | |
| 981 | (AppendList.single | |
| 982 | (Assembly.instruction_jmp | |
| 983 | {target = Operand.label target, | |
| 984 | absolute = false}))) | |
| 985 | | NonTail {target, live, return, handler, size} | |
| 986 | => let | |
| 987 | val _ = enque return | |
| 988 | val _ = case handler | |
| 989 | of SOME handler => enque handler | |
| 990 | | NONE => () | |
| 991 | ||
| 992 | val stackTopTemp | |
| 993 | = x86MLton.stackTopTempContentsOperand () | |
| 994 | val stackTopTempMinusWordDeref' | |
| 995 | = x86MLton.stackTopTempMinusWordDeref () | |
| 996 | val stackTopTempMinusWordDeref | |
| 997 | = x86MLton.stackTopTempMinusWordDerefOperand () | |
| 998 | val stackTop | |
| 999 | = x86MLton.gcState_stackTopContentsOperand () | |
| 1000 | val stackTopMinusWordDeref' | |
| 1001 | = x86MLton.gcState_stackTopMinusWordDeref () | |
| 1002 | val stackTopMinusWordDeref | |
| 1003 | = x86MLton.gcState_stackTopMinusWordDerefOperand () | |
| 1004 | val bytes | |
| 1005 | = x86.Operand.immediate_int size | |
| 1006 | ||
| 1007 | val liveReturn = x86Liveness.LiveInfo.getLive(liveInfo, return) | |
| 1008 | val liveHandler | |
| 1009 | = case handler | |
| 1010 | of SOME handler | |
| 1011 | => x86Liveness.LiveInfo.getLive(liveInfo, handler) | |
| 1012 | | _ => LiveSet.empty | |
| 1013 | val live = MemLocSet.unions [live, | |
| 1014 | LiveSet.toMemLocSet liveReturn, | |
| 1015 | LiveSet.toMemLocSet liveHandler] | |
| 1016 | in | |
| 1017 | (* flushing at far transfer *) | |
| 1018 | (farTransfer live | |
| 1019 | (if !Control.profile <> Control.ProfileNone | |
| 1020 | then (AppendList.fromList | |
| 1021 | [(* stackTopTemp = stackTop + bytes *) | |
| 1022 | x86.Assembly.instruction_mov | |
| 1023 | {dst = stackTopTemp, | |
| 1024 | src = stackTop, | |
| 1025 | size = pointerSize}, | |
| 1026 | x86.Assembly.instruction_binal | |
| 1027 | {oper = x86.Instruction.ADD, | |
| 1028 | dst = stackTopTemp, | |
| 1029 | src = bytes, | |
| 1030 | size = pointerSize}, | |
| 1031 | (* *(stackTopTemp - WORD_SIZE) = return *) | |
| 1032 | x86.Assembly.instruction_mov | |
| 1033 | {dst = stackTopTempMinusWordDeref, | |
| 1034 | src = Operand.immediate_label return, | |
| 1035 | size = pointerSize}, | |
| 1036 | x86.Assembly.directive_force | |
| 1037 | {commit_memlocs = MemLocSet.singleton stackTopTempMinusWordDeref', | |
| 1038 | commit_classes = ClassSet.empty, | |
| 1039 | remove_memlocs = MemLocSet.empty, | |
| 1040 | remove_classes = ClassSet.empty, | |
| 1041 | dead_memlocs = MemLocSet.empty, | |
| 1042 | dead_classes = ClassSet.empty}, | |
| 1043 | (* stackTop = stackTopTemp *) | |
| 1044 | x86.Assembly.instruction_mov | |
| 1045 | {dst = stackTop, | |
| 1046 | src = stackTopTemp, | |
| 1047 | size = pointerSize}, | |
| 1048 | profileStackTopCommit']) | |
| 1049 | else (AppendList.fromList | |
| 1050 | [(* stackTop += bytes *) | |
| 1051 | x86.Assembly.instruction_binal | |
| 1052 | {oper = x86.Instruction.ADD, | |
| 1053 | dst = stackTop, | |
| 1054 | src = bytes, | |
| 1055 | size = pointerSize}, | |
| 1056 | (* *(stackTop - WORD_SIZE) = return *) | |
| 1057 | x86.Assembly.instruction_mov | |
| 1058 | {dst = stackTopMinusWordDeref, | |
| 1059 | src = Operand.immediate_label return, | |
| 1060 | size = pointerSize}, | |
| 1061 | x86.Assembly.directive_force | |
| 1062 | {commit_memlocs = MemLocSet.singleton stackTopMinusWordDeref', | |
| 1063 | commit_classes = ClassSet.empty, | |
| 1064 | remove_memlocs = MemLocSet.empty, | |
| 1065 | remove_classes = ClassSet.empty, | |
| 1066 | dead_memlocs = MemLocSet.empty, | |
| 1067 | dead_classes = ClassSet.empty}])) | |
| 1068 | (AppendList.single | |
| 1069 | (Assembly.instruction_jmp | |
| 1070 | {target = Operand.label target, | |
| 1071 | absolute = false}))) | |
| 1072 | end | |
| 1073 | | Return {live} | |
| 1074 | => let | |
| 1075 | val stackTopMinusWordDeref | |
| 1076 | = x86MLton.gcState_stackTopMinusWordDerefOperand () | |
| 1077 | in | |
| 1078 | (* flushing at far transfer *) | |
| 1079 | (farTransfer live | |
| 1080 | AppendList.empty | |
| 1081 | (AppendList.single | |
| 1082 | (* jmp *(stackTop - WORD_SIZE) *) | |
| 1083 | (x86.Assembly.instruction_jmp | |
| 1084 | {target = stackTopMinusWordDeref, | |
| 1085 | absolute = true}))) | |
| 1086 | end | |
| 1087 | | Raise {live} | |
| 1088 | => let | |
| 1089 | val exnStack | |
| 1090 | = x86MLton.gcState_exnStackContentsOperand () | |
| 1091 | val stackTopTemp | |
| 1092 | = x86MLton.stackTopTempContentsOperand () | |
| 1093 | val stackTop | |
| 1094 | = x86MLton.gcState_stackTopContentsOperand () | |
| 1095 | val stackBottom | |
| 1096 | = x86MLton.gcState_stackBottomContentsOperand () | |
| 1097 | in | |
| 1098 | (* flushing at far transfer *) | |
| 1099 | (farTransfer live | |
| 1100 | (if !Control.profile <> Control.ProfileNone | |
| 1101 | then (AppendList.fromList | |
| 1102 | [(* stackTopTemp = stackBottom + exnStack *) | |
| 1103 | x86.Assembly.instruction_mov | |
| 1104 | {dst = stackTopTemp, | |
| 1105 | src = stackBottom, | |
| 1106 | size = pointerSize}, | |
| 1107 | x86.Assembly.instruction_binal | |
| 1108 | {oper = x86.Instruction.ADD, | |
| 1109 | dst = stackTopTemp, | |
| 1110 | src = exnStack, | |
| 1111 | size = pointerSize}, | |
| 1112 | (* stackTop = stackTopTemp *) | |
| 1113 | x86.Assembly.instruction_mov | |
| 1114 | {dst = stackTop, | |
| 1115 | src = stackTopTemp, | |
| 1116 | size = pointerSize}, | |
| 1117 | profileStackTopCommit']) | |
| 1118 | else (AppendList.fromList | |
| 1119 | [(* stackTop = stackBottom + exnStack *) | |
| 1120 | x86.Assembly.instruction_mov | |
| 1121 | {dst = stackTop, | |
| 1122 | src = stackBottom, | |
| 1123 | size = pointerSize}, | |
| 1124 | x86.Assembly.instruction_binal | |
| 1125 | {oper = x86.Instruction.ADD, | |
| 1126 | dst = stackTop, | |
| 1127 | src = exnStack, | |
| 1128 | size = pointerSize}])) | |
| 1129 | (AppendList.single | |
| 1130 | (* jmp *(stackTop - WORD_SIZE) *) | |
| 1131 | (x86.Assembly.instruction_jmp | |
| 1132 | {target = x86MLton.gcState_stackTopMinusWordDerefOperand (), | |
| 1133 | absolute = true}))) | |
| 1134 | end | |
| 1135 | | CCall {args, frameInfo, func, return} | |
| 1136 | => let | |
| 1137 | datatype z = datatype CFunction.Convention.t | |
| 1138 | datatype z = datatype CFunction.SymbolScope.t | |
| 1139 | datatype z = datatype CFunction.Target.t | |
| 1140 | val CFunction.T {convention, | |
| 1141 | return = returnTy, | |
| 1142 | symbolScope, | |
| 1143 | target, ...} = func | |
| 1144 | val stackTopMinusWordDeref | |
| 1145 | = x86MLton.gcState_stackTopMinusWordDerefOperand () | |
| 1146 | val Liveness.T {dead, ...} | |
| 1147 | = livenessTransfer {transfer = transfer, | |
| 1148 | liveInfo = liveInfo} | |
| 1149 | val c_stackP = x86MLton.c_stackPContentsOperand | |
| 1150 | val c_stackPDerefFloat = x86MLton.c_stackPDerefFloatOperand | |
| 1151 | val c_stackPDerefDouble = x86MLton.c_stackPDerefDoubleOperand | |
| 1152 | val applyFFTempFun = x86MLton.applyFFTempFunContentsOperand | |
| 1153 | val applyFFTempArg = x86MLton.applyFFTempArgContentsOperand | |
| 1154 | val (fptrArg, args) = | |
| 1155 | case target of | |
| 1156 | Direct _ => (AppendList.empty, args) | |
| 1157 | | Indirect => | |
| 1158 | let | |
| 1159 | val (fptrArg, args) = | |
| 1160 | case args of | |
| 1161 | fptrArg::args => (fptrArg, args) | |
| 1162 | | _ => Error.bug "x86GenerateTransfers.generateAll: CCall" | |
| 1163 | in | |
| 1164 | (AppendList.single | |
| 1165 | (Assembly.instruction_mov | |
| 1166 | {src = #1 fptrArg, | |
| 1167 | dst = applyFFTempFun, | |
| 1168 | size = #2 fptrArg}), | |
| 1169 | args) | |
| 1170 | end | |
| 1171 | val (pushArgs, size_args) | |
| 1172 | = List.fold | |
| 1173 | (args, (AppendList.empty, 0), | |
| 1174 | fn ((arg, size), (assembly_args, size_args)) => | |
| 1175 | let | |
| 1176 | val (assembly_arg, size_arg) = | |
| 1177 | if Size.eq (size, Size.DBLE) | |
| 1178 | then (AppendList.fromList | |
| 1179 | [Assembly.instruction_binal | |
| 1180 | {oper = Instruction.SUB, | |
| 1181 | dst = c_stackP, | |
| 1182 | src = Operand.immediate_int 8, | |
| 1183 | size = pointerSize}, | |
| 1184 | Assembly.instruction_pfmov | |
| 1185 | {src = arg, | |
| 1186 | dst = c_stackPDerefDouble, | |
| 1187 | size = size}], | |
| 1188 | Size.toBytes size) | |
| 1189 | else if Size.eq (size, Size.SNGL) | |
| 1190 | then (AppendList.fromList | |
| 1191 | [Assembly.instruction_binal | |
| 1192 | {oper = Instruction.SUB, | |
| 1193 | dst = c_stackP, | |
| 1194 | src = Operand.immediate_int 4, | |
| 1195 | size = pointerSize}, | |
| 1196 | Assembly.instruction_pfmov | |
| 1197 | {src = arg, | |
| 1198 | dst = c_stackPDerefFloat, | |
| 1199 | size = size}], | |
| 1200 | Size.toBytes size) | |
| 1201 | else if Size.eq (size, Size.BYTE) | |
| 1202 | orelse Size.eq (size, Size.WORD) | |
| 1203 | then (AppendList.fromList | |
| 1204 | [Assembly.instruction_movx | |
| 1205 | {oper = Instruction.MOVZX, | |
| 1206 | dst = applyFFTempArg, | |
| 1207 | src = arg, | |
| 1208 | dstsize = wordSize, | |
| 1209 | srcsize = size}, | |
| 1210 | Assembly.instruction_ppush | |
| 1211 | {src = applyFFTempArg, | |
| 1212 | base = c_stackP, | |
| 1213 | size = wordSize}], | |
| 1214 | Size.toBytes wordSize) | |
| 1215 | else (AppendList.single | |
| 1216 | (Assembly.instruction_ppush | |
| 1217 | {src = arg, | |
| 1218 | base = c_stackP, | |
| 1219 | size = size}), | |
| 1220 | Size.toBytes size) | |
| 1221 | in | |
| 1222 | (AppendList.append (assembly_arg, assembly_args), | |
| 1223 | size_arg + size_args) | |
| 1224 | end) | |
| 1225 | val (pushArgs, aligned_size_args) = | |
| 1226 | let | |
| 1227 | val space = 16 - (size_args mod 16) | |
| 1228 | in | |
| 1229 | if space = 16 | |
| 1230 | then (pushArgs, size_args) | |
| 1231 | else (AppendList.append | |
| 1232 | (AppendList.single | |
| 1233 | (Assembly.instruction_binal | |
| 1234 | {oper = Instruction.SUB, | |
| 1235 | dst = c_stackP, | |
| 1236 | src = Operand.immediate_int space, | |
| 1237 | size = pointerSize}), | |
| 1238 | pushArgs), | |
| 1239 | size_args + space) | |
| 1240 | end | |
| 1241 | val flush = | |
| 1242 | case frameInfo of | |
| 1243 | SOME (FrameInfo.T {size, ...}) => | |
| 1244 | (* Entering runtime *) | |
| 1245 | let | |
| 1246 | val return = valOf return | |
| 1247 | val _ = enque return | |
| 1248 | ||
| 1249 | val stackTopTemp | |
| 1250 | = x86MLton.stackTopTempContentsOperand () | |
| 1251 | val stackTopTempMinusWordDeref' | |
| 1252 | = x86MLton.stackTopTempMinusWordDeref () | |
| 1253 | val stackTopTempMinusWordDeref | |
| 1254 | = x86MLton.stackTopTempMinusWordDerefOperand () | |
| 1255 | val stackTop | |
| 1256 | = x86MLton.gcState_stackTopContentsOperand () | |
| 1257 | val stackTopMinusWordDeref' | |
| 1258 | = x86MLton.gcState_stackTopMinusWordDeref () | |
| 1259 | val stackTopMinusWordDeref | |
| 1260 | = x86MLton.gcState_stackTopMinusWordDerefOperand () | |
| 1261 | val bytes = x86.Operand.immediate_int size | |
| 1262 | ||
| 1263 | val live = | |
| 1264 | x86Liveness.LiveInfo.getLive(liveInfo, return) | |
| 1265 | val {defs, ...} = Transfer.uses_defs_kills transfer | |
| 1266 | val live = | |
| 1267 | List.fold | |
| 1268 | (defs, | |
| 1269 | live, | |
| 1270 | fn (oper,live) => | |
| 1271 | case Operand.deMemloc oper of | |
| 1272 | SOME memloc => LiveSet.remove (live, memloc) | |
| 1273 | | NONE => live) | |
| 1274 | in | |
| 1275 | (runtimeTransfer (LiveSet.toMemLocSet live) | |
| 1276 | (if !Control.profile <> Control.ProfileNone | |
| 1277 | then (AppendList.fromList | |
| 1278 | [(* stackTopTemp = stackTop + bytes *) | |
| 1279 | x86.Assembly.instruction_mov | |
| 1280 | {dst = stackTopTemp, | |
| 1281 | src = stackTop, | |
| 1282 | size = pointerSize}, | |
| 1283 | x86.Assembly.instruction_binal | |
| 1284 | {oper = x86.Instruction.ADD, | |
| 1285 | dst = stackTopTemp, | |
| 1286 | src = bytes, | |
| 1287 | size = pointerSize}, | |
| 1288 | (* *(stackTopTemp - WORD_SIZE) = return *) | |
| 1289 | x86.Assembly.instruction_mov | |
| 1290 | {dst = stackTopTempMinusWordDeref, | |
| 1291 | src = Operand.immediate_label return, | |
| 1292 | size = pointerSize}, | |
| 1293 | x86.Assembly.directive_force | |
| 1294 | {commit_memlocs = MemLocSet.singleton stackTopTempMinusWordDeref', | |
| 1295 | commit_classes = ClassSet.empty, | |
| 1296 | remove_memlocs = MemLocSet.empty, | |
| 1297 | remove_classes = ClassSet.empty, | |
| 1298 | dead_memlocs = MemLocSet.empty, | |
| 1299 | dead_classes = ClassSet.empty}, | |
| 1300 | (* stackTop = stackTopTemp *) | |
| 1301 | x86.Assembly.instruction_mov | |
| 1302 | {dst = stackTop, | |
| 1303 | src = stackTopTemp, | |
| 1304 | size = pointerSize}, | |
| 1305 | profileStackTopCommit']) | |
| 1306 | else (AppendList.fromList | |
| 1307 | [(* stackTop += bytes *) | |
| 1308 | x86.Assembly.instruction_binal | |
| 1309 | {oper = x86.Instruction.ADD, | |
| 1310 | dst = stackTop, | |
| 1311 | src = bytes, | |
| 1312 | size = pointerSize}, | |
| 1313 | (* *(stackTop - WORD_SIZE) = return *) | |
| 1314 | x86.Assembly.instruction_mov | |
| 1315 | {dst = stackTopMinusWordDeref, | |
| 1316 | src = Operand.immediate_label return, | |
| 1317 | size = pointerSize}, | |
| 1318 | x86.Assembly.directive_force | |
| 1319 | {commit_memlocs = MemLocSet.singleton stackTopMinusWordDeref', | |
| 1320 | commit_classes = ClassSet.empty, | |
| 1321 | remove_memlocs = MemLocSet.empty, | |
| 1322 | remove_classes = ClassSet.empty, | |
| 1323 | dead_memlocs = MemLocSet.empty, | |
| 1324 | dead_classes = ClassSet.empty}])) | |
| 1325 | (AppendList.single | |
| 1326 | (Assembly.directive_force | |
| 1327 | {commit_memlocs = LiveSet.toMemLocSet live, | |
| 1328 | commit_classes = runtimeClasses, | |
| 1329 | remove_memlocs = MemLocSet.empty, | |
| 1330 | remove_classes = ClassSet.empty, | |
| 1331 | dead_memlocs = MemLocSet.empty, | |
| 1332 | dead_classes = ClassSet.empty}))) | |
| 1333 | end | |
| 1334 | | NONE => | |
| 1335 | AppendList.single | |
| 1336 | (Assembly.directive_force | |
| 1337 | {commit_memlocs = let | |
| 1338 | val s = MemLocSet.empty | |
| 1339 | val s = if CFunction.modifiesFrontier func | |
| 1340 | then MemLocSet.add | |
| 1341 | (s, frontier ()) | |
| 1342 | else s | |
| 1343 | val s = if CFunction.readsStackTop func | |
| 1344 | then MemLocSet.add | |
| 1345 | (s, stackTop ()) | |
| 1346 | else s | |
| 1347 | in | |
| 1348 | s | |
| 1349 | end, | |
| 1350 | commit_classes = ccallflushClasses, | |
| 1351 | remove_memlocs = MemLocSet.empty, | |
| 1352 | remove_classes = ClassSet.empty, | |
| 1353 | dead_memlocs = LiveSet.toMemLocSet dead, | |
| 1354 | dead_classes = ClassSet.empty}) | |
| 1355 | val call = | |
| 1356 | case target of | |
| 1357 | Direct name => | |
| 1358 | let | |
| 1359 | datatype z = datatype MLton.Platform.OS.t | |
| 1360 | datatype z = datatype Control.Format.t | |
| 1361 | ||
| 1362 | val name = | |
| 1363 | case convention of | |
| 1364 | Cdecl => name | |
| 1365 | | Stdcall => concat [name, "@", Int.toString size_args] | |
| 1366 | ||
| 1367 | val label = fn () => Label.fromString name | |
| 1368 | ||
| 1369 | (* how to access imported functions: *) | |
| 1370 | (* Windows rewrites the symbol __imp__name *) | |
| 1371 | val coff = fn () => Label.fromString ("_imp__" ^ name) | |
| 1372 | val macho = fn () => makeDarwinSymbolStubLabel name | |
| 1373 | val elf = fn () => Label.fromString (name ^ "@PLT") | |
| 1374 | ||
| 1375 | val importLabel = fn () => | |
| 1376 | case !Control.Target.os of | |
| 1377 | Cygwin => coff () | |
| 1378 | | Darwin => macho () | |
| 1379 | | MinGW => coff () | |
| 1380 | | _ => elf () | |
| 1381 | ||
| 1382 | val direct = fn () => | |
| 1383 | AppendList.fromList | |
| 1384 | [Assembly.directive_ccall (), | |
| 1385 | Assembly.instruction_call | |
| 1386 | {target = Operand.label (label ()), | |
| 1387 | absolute = false}] | |
| 1388 | ||
| 1389 | val plt = fn () => | |
| 1390 | AppendList.fromList | |
| 1391 | [Assembly.directive_ccall (), | |
| 1392 | Assembly.instruction_call | |
| 1393 | {target = Operand.label (importLabel ()), | |
| 1394 | absolute = false}] | |
| 1395 | ||
| 1396 | val indirect = fn () => | |
| 1397 | AppendList.fromList | |
| 1398 | [Assembly.directive_ccall (), | |
| 1399 | Assembly.instruction_call | |
| 1400 | {target = Operand.memloc_label (importLabel ()), | |
| 1401 | absolute = true}] | |
| 1402 | in | |
| 1403 | case (symbolScope, | |
| 1404 | !Control.Target.os, | |
| 1405 | !Control.positionIndependent) of | |
| 1406 | (* Private functions can be easily reached | |
| 1407 | * with a direct (eip-relative) call. | |
| 1408 | *) | |
| 1409 | (Private, _, _) => direct () | |
| 1410 | (* Call at the point of definition. *) | |
| 1411 | | (Public, MinGW, _) => direct () | |
| 1412 | | (Public, Cygwin, _) => direct () | |
| 1413 | | (Public, Darwin, _) => direct () | |
| 1414 | (* ELF requires PLT even for public fns. *) | |
| 1415 | | (Public, _, true) => plt () | |
| 1416 | | (Public, _, false) => direct () | |
| 1417 | (* Windows always does indirect calls to | |
| 1418 | * imported functions. The importLabel has | |
| 1419 | * the function address written to it. | |
| 1420 | *) | |
| 1421 | | (External, MinGW, _) => indirect () | |
| 1422 | | (External, Cygwin, _) => indirect () | |
| 1423 | (* Darwin needs to generate special stubs | |
| 1424 | * that are filled in by the dynamic linker. | |
| 1425 | * This is needed even for non-PIC. | |
| 1426 | *) | |
| 1427 | | (External, Darwin, _) => plt () | |
| 1428 | (* ELF systems create procedure lookup | |
| 1429 | * tables (PLT) which proxy the call to | |
| 1430 | * libraries. The PLT does not contain an | |
| 1431 | * address, but instead a stub function. | |
| 1432 | *) | |
| 1433 | | (External, _, true) => plt () | |
| 1434 | | (External, _, false) => direct () | |
| 1435 | end | |
| 1436 | | Indirect => | |
| 1437 | AppendList.fromList | |
| 1438 | [Assembly.directive_ccall (), | |
| 1439 | Assembly.instruction_call | |
| 1440 | {target = applyFFTempFun, | |
| 1441 | absolute = true}] | |
| 1442 | val kill | |
| 1443 | = if isSome frameInfo | |
| 1444 | then AppendList.single | |
| 1445 | (Assembly.directive_force | |
| 1446 | {commit_memlocs = MemLocSet.empty, | |
| 1447 | commit_classes = ClassSet.empty, | |
| 1448 | remove_memlocs = MemLocSet.empty, | |
| 1449 | remove_classes = ClassSet.empty, | |
| 1450 | dead_memlocs = MemLocSet.empty, | |
| 1451 | dead_classes = runtimeClasses}) | |
| 1452 | else AppendList.single | |
| 1453 | (Assembly.directive_force | |
| 1454 | {commit_memlocs = MemLocSet.empty, | |
| 1455 | commit_classes = ClassSet.empty, | |
| 1456 | remove_memlocs = MemLocSet.empty, | |
| 1457 | remove_classes = ClassSet.empty, | |
| 1458 | dead_memlocs = let | |
| 1459 | val s = MemLocSet.empty | |
| 1460 | val s = if CFunction.modifiesFrontier func | |
| 1461 | then MemLocSet.add | |
| 1462 | (s, frontier ()) | |
| 1463 | else s | |
| 1464 | val s = if CFunction.writesStackTop func | |
| 1465 | then MemLocSet.add | |
| 1466 | (s, stackTop ()) | |
| 1467 | else s | |
| 1468 | in | |
| 1469 | s | |
| 1470 | end, | |
| 1471 | dead_classes = ccallflushClasses}) | |
| 1472 | val getResult = | |
| 1473 | AppendList.single | |
| 1474 | (Assembly.directive_return | |
| 1475 | {returns = Operand.cReturnTemps returnTy}) | |
| 1476 | val fixCStack = | |
| 1477 | if aligned_size_args > 0 | |
| 1478 | andalso convention = CFunction.Convention.Cdecl | |
| 1479 | then (AppendList.single | |
| 1480 | (Assembly.instruction_binal | |
| 1481 | {oper = Instruction.ADD, | |
| 1482 | dst = c_stackP, | |
| 1483 | src = Operand.immediate_int aligned_size_args, | |
| 1484 | size = pointerSize})) | |
| 1485 | else AppendList.empty | |
| 1486 | val continue | |
| 1487 | = if CFunction.maySwitchThreads func | |
| 1488 | then (* Returning from runtime *) | |
| 1489 | (farTransfer MemLocSet.empty | |
| 1490 | AppendList.empty | |
| 1491 | (AppendList.single | |
| 1492 | (* jmp *(stackTop - WORD_SIZE) *) | |
| 1493 | (x86.Assembly.instruction_jmp | |
| 1494 | {target = stackTopMinusWordDeref, | |
| 1495 | absolute = true}))) | |
| 1496 | else case return | |
| 1497 | of NONE => AppendList.empty | |
| 1498 | | SOME l => (if isSome frameInfo | |
| 1499 | then (* Don't need to trampoline, | |
| 1500 | * since didn't switch threads, | |
| 1501 | * but can't fall because | |
| 1502 | * frame layout data is prefixed | |
| 1503 | * to l's code; use fallNone | |
| 1504 | * to force a jmp with near | |
| 1505 | * jump assumptions. | |
| 1506 | *) | |
| 1507 | fallNone | |
| 1508 | else fall) | |
| 1509 | gef | |
| 1510 | {label = l, | |
| 1511 | live = getLive (liveInfo, l)} | |
| 1512 | in | |
| 1513 | AppendList.appends | |
| 1514 | [cacheEsp (), | |
| 1515 | fptrArg, | |
| 1516 | pushArgs, | |
| 1517 | flush, | |
| 1518 | call, | |
| 1519 | kill, | |
| 1520 | getResult, | |
| 1521 | fixCStack, | |
| 1522 | unreserveEsp (), | |
| 1523 | continue] | |
| 1524 | end) | |
| 1525 | ||
| 1526 | and effectJumpTable (gef as GEF {...}) | |
| 1527 | {label, transfer} : Assembly.t AppendList.t | |
| 1528 | = case transfer | |
| 1529 | of Switch {test, cases, default} | |
| 1530 | => let | |
| 1531 | val ws = | |
| 1532 | case Operand.size test of | |
| 1533 | SOME Size.BYTE => WordSize.word8 | |
| 1534 | | SOME Size.WORD => WordSize.word16 | |
| 1535 | | SOME Size.LONG => WordSize.word32 | |
| 1536 | | _ => Error.bug "x86GenerateTransfers.effectJumpTable: Switch" | |
| 1537 | ||
| 1538 | val zero = WordX.zero ws | |
| 1539 | val one = WordX.one ws | |
| 1540 | val two = WordX.add (one, one) | |
| 1541 | fun even w = WordX.isZero (WordX.mod (w, two, {signed = false})) | |
| 1542 | fun incFn w = WordX.add (w, one) | |
| 1543 | fun decFn w = WordX.sub (w, one) | |
| 1544 | fun halfFn w = WordX.div (w, two, {signed = false}) | |
| 1545 | fun ltFn (w1, w2) = WordX.lt (w1, w2, {signed = false}) | |
| 1546 | val min = WordX.min (ws, {signed = false}) | |
| 1547 | fun minFn (w1, w2) = if WordX.lt (w1, w2, {signed = false}) | |
| 1548 | then w1 | |
| 1549 | else w2 | |
| 1550 | val max = WordX.max (ws, {signed = false}) | |
| 1551 | fun maxFn (w1, w2) = if WordX.gt (w1, w2, {signed = false}) | |
| 1552 | then w1 | |
| 1553 | else w2 | |
| 1554 | fun range (w1, w2) = WordX.sub (w2, w1) | |
| 1555 | ||
| 1556 | val Liveness.T {dead, ...} | |
| 1557 | = livenessTransfer {transfer = transfer, | |
| 1558 | liveInfo = liveInfo} | |
| 1559 | ||
| 1560 | fun reduce(cases) | |
| 1561 | = let | |
| 1562 | fun reduce' cases | |
| 1563 | = let | |
| 1564 | val (minK,maxK,length, | |
| 1565 | allEven,allOdd) | |
| 1566 | = List.fold | |
| 1567 | (cases, | |
| 1568 | (max, min, 0, | |
| 1569 | true, true), | |
| 1570 | fn ((k,_), | |
| 1571 | (minK,maxK,length, | |
| 1572 | allEven,allOdd)) | |
| 1573 | => let | |
| 1574 | val isEven = even k | |
| 1575 | in | |
| 1576 | (minFn(k,minK), | |
| 1577 | maxFn(k,maxK), | |
| 1578 | length + 1, | |
| 1579 | allEven andalso isEven, | |
| 1580 | allOdd andalso not isEven) | |
| 1581 | end) | |
| 1582 | in | |
| 1583 | if length > 1 andalso | |
| 1584 | (allEven orelse allOdd) | |
| 1585 | then let | |
| 1586 | val f = if allOdd | |
| 1587 | then halfFn o decFn | |
| 1588 | else halfFn | |
| 1589 | val cases' | |
| 1590 | = List.map | |
| 1591 | (cases, | |
| 1592 | fn (k,target) | |
| 1593 | => (f k, target)) | |
| 1594 | ||
| 1595 | val (cases'', | |
| 1596 | minK'', maxK'', length'', | |
| 1597 | shift'', mask'') | |
| 1598 | = reduce' cases' | |
| 1599 | ||
| 1600 | val shift' = 1 + shift'' | |
| 1601 | val mask' | |
| 1602 | = WordX.orb | |
| 1603 | (WordX.lshift(mask'', WordX.one WordSize.word32), | |
| 1604 | if allOdd | |
| 1605 | then WordX.one WordSize.word32 | |
| 1606 | else WordX.zero WordSize.word32) | |
| 1607 | in | |
| 1608 | (cases'', | |
| 1609 | minK'', maxK'', length'', | |
| 1610 | shift', mask') | |
| 1611 | end | |
| 1612 | else (cases, | |
| 1613 | minK, maxK, length, | |
| 1614 | 0, WordX.zero WordSize.word32) | |
| 1615 | end | |
| 1616 | in | |
| 1617 | reduce' cases | |
| 1618 | end | |
| 1619 | ||
| 1620 | fun doitTable(cases, | |
| 1621 | minK, _, rangeK, shift, mask) | |
| 1622 | = let | |
| 1623 | val jump_table_label | |
| 1624 | = Label.newString "jumpTable" | |
| 1625 | ||
| 1626 | val idT = Directive.Id.new () | |
| 1627 | val defaultT = | |
| 1628 | Promise.delay | |
| 1629 | (fn () => | |
| 1630 | let | |
| 1631 | val _ = incNear(jumpInfo, default) | |
| 1632 | in | |
| 1633 | pushCompensationBlock | |
| 1634 | {label = default, | |
| 1635 | id = idT} | |
| 1636 | end) | |
| 1637 | ||
| 1638 | val rec filler | |
| 1639 | = fn ([],_) => [] | |
| 1640 | | (cases as (i,target)::cases',j) | |
| 1641 | => if WordX.equals (i, j) | |
| 1642 | then let | |
| 1643 | val target' | |
| 1644 | = pushCompensationBlock | |
| 1645 | {label = target, | |
| 1646 | id = idT} | |
| 1647 | in | |
| 1648 | (Immediate.label target'):: | |
| 1649 | (filler(cases', incFn j)) | |
| 1650 | end | |
| 1651 | else (Immediate.label | |
| 1652 | (Promise.force defaultT)):: | |
| 1653 | (filler(cases, incFn j)) | |
| 1654 | ||
| 1655 | val jump_table = filler (cases, minK) | |
| 1656 | ||
| 1657 | val idD = Directive.Id.new () | |
| 1658 | val defaultD = pushCompensationBlock | |
| 1659 | {label = default, | |
| 1660 | id = idD} | |
| 1661 | ||
| 1662 | val default_live = getLive(liveInfo, default) | |
| 1663 | val live | |
| 1664 | = List.fold | |
| 1665 | (cases, | |
| 1666 | default_live, | |
| 1667 | fn ((_,target), live) | |
| 1668 | => LiveSet.+(live, getLive(liveInfo, target))) | |
| 1669 | ||
| 1670 | val indexTemp | |
| 1671 | = MemLoc.imm | |
| 1672 | {base = Immediate.label (Label.fromString "indexTemp"), | |
| 1673 | index = Immediate.zero, | |
| 1674 | scale = Scale.Four, | |
| 1675 | size = Size.LONG, | |
| 1676 | class = MemLoc.Class.Temp} | |
| 1677 | val checkTemp | |
| 1678 | = MemLoc.imm | |
| 1679 | {base = Immediate.label (Label.fromString "checkTemp"), | |
| 1680 | index = Immediate.zero, | |
| 1681 | scale = Scale.Four, | |
| 1682 | size = Size.LONG, | |
| 1683 | class = MemLoc.Class.Temp} | |
| 1684 | val address | |
| 1685 | = MemLoc.basic | |
| 1686 | {base = Immediate.label jump_table_label, | |
| 1687 | index = indexTemp, | |
| 1688 | scale = Scale.Four, | |
| 1689 | size = Size.LONG, | |
| 1690 | class = MemLoc.Class.Code} | |
| 1691 | ||
| 1692 | val size | |
| 1693 | = case Operand.size test | |
| 1694 | of SOME size => size | |
| 1695 | | NONE => Size.LONG | |
| 1696 | val indexTemp' = indexTemp | |
| 1697 | val indexTemp = Operand.memloc indexTemp | |
| 1698 | val checkTemp' = checkTemp | |
| 1699 | val checkTemp = Operand.memloc checkTemp | |
| 1700 | val address = Operand.memloc address | |
| 1701 | in | |
| 1702 | AppendList.appends | |
| 1703 | [if Size.lt(size, Size.LONG) | |
| 1704 | then AppendList.single | |
| 1705 | (Assembly.instruction_movx | |
| 1706 | {oper = Instruction.MOVZX, | |
| 1707 | src = test, | |
| 1708 | srcsize = size, | |
| 1709 | dst = indexTemp, | |
| 1710 | dstsize = Size.LONG}) | |
| 1711 | else AppendList.single | |
| 1712 | (Assembly.instruction_mov | |
| 1713 | {src = test, | |
| 1714 | dst = indexTemp, | |
| 1715 | size = Size.LONG}), | |
| 1716 | if LiveSet.isEmpty dead | |
| 1717 | then AppendList.empty | |
| 1718 | else AppendList.single | |
| 1719 | (Assembly.directive_force | |
| 1720 | {commit_memlocs = MemLocSet.empty, | |
| 1721 | commit_classes = ClassSet.empty, | |
| 1722 | remove_memlocs = MemLocSet.empty, | |
| 1723 | remove_classes = ClassSet.empty, | |
| 1724 | dead_memlocs = LiveSet.toMemLocSet dead, | |
| 1725 | dead_classes = ClassSet.empty}), | |
| 1726 | if shift > 0 | |
| 1727 | then let | |
| 1728 | val idC = Directive.Id.new () | |
| 1729 | val defaultC = pushCompensationBlock | |
| 1730 | {label = default, | |
| 1731 | id = idC} | |
| 1732 | val _ = incNear(jumpInfo, default) | |
| 1733 | in | |
| 1734 | AppendList.appends | |
| 1735 | [AppendList.fromList | |
| 1736 | [Assembly.instruction_mov | |
| 1737 | {src = indexTemp, | |
| 1738 | dst = checkTemp, | |
| 1739 | size = Size.LONG}, | |
| 1740 | Assembly.instruction_binal | |
| 1741 | {oper = Instruction.AND, | |
| 1742 | src = Operand.immediate_word | |
| 1743 | (ones (shift, WordSize.word32)), | |
| 1744 | dst = checkTemp, | |
| 1745 | size = Size.LONG}], | |
| 1746 | if WordX.isZero mask | |
| 1747 | then AppendList.empty | |
| 1748 | else AppendList.single | |
| 1749 | (Assembly.instruction_binal | |
| 1750 | {oper = Instruction.SUB, | |
| 1751 | src = Operand.immediate_word mask, | |
| 1752 | dst = checkTemp, | |
| 1753 | size = Size.LONG}), | |
| 1754 | AppendList.fromList | |
| 1755 | [Assembly.directive_force | |
| 1756 | {commit_memlocs = MemLocSet.empty, | |
| 1757 | commit_classes = nearflushClasses, | |
| 1758 | remove_memlocs = MemLocSet.empty, | |
| 1759 | remove_classes = ClassSet.empty, | |
| 1760 | dead_memlocs = MemLocSet.singleton checkTemp', | |
| 1761 | dead_classes = ClassSet.empty}, | |
| 1762 | Assembly.instruction_jcc | |
| 1763 | {condition = Instruction.NZ, | |
| 1764 | target = Operand.label defaultC}, | |
| 1765 | Assembly.directive_saveregalloc | |
| 1766 | {id = idC, | |
| 1767 | live = MemLocSet.add | |
| 1768 | (MemLocSet.add | |
| 1769 | (LiveSet.toMemLocSet default_live, | |
| 1770 | stackTop ()), | |
| 1771 | frontier ())}, | |
| 1772 | Assembly.instruction_sral | |
| 1773 | {oper = Instruction.SAR, | |
| 1774 | count = Operand.immediate_int shift, | |
| 1775 | dst = indexTemp, | |
| 1776 | size = Size.LONG}]] | |
| 1777 | end | |
| 1778 | else AppendList.empty, | |
| 1779 | if WordX.equals (minK, zero) | |
| 1780 | then AppendList.empty | |
| 1781 | else AppendList.single | |
| 1782 | (Assembly.instruction_binal | |
| 1783 | {oper = Instruction.SUB, | |
| 1784 | src = Operand.immediate_word minK, | |
| 1785 | dst = indexTemp, | |
| 1786 | size = Size.LONG}), | |
| 1787 | AppendList.fromList | |
| 1788 | [Assembly.directive_force | |
| 1789 | {commit_memlocs = MemLocSet.empty, | |
| 1790 | commit_classes = nearflushClasses, | |
| 1791 | remove_memlocs = MemLocSet.empty, | |
| 1792 | remove_classes = ClassSet.empty, | |
| 1793 | dead_memlocs = MemLocSet.empty, | |
| 1794 | dead_classes = ClassSet.empty}, | |
| 1795 | Assembly.directive_cache | |
| 1796 | {caches = [{register = indexReg, | |
| 1797 | memloc = indexTemp', | |
| 1798 | reserve = false}]}, | |
| 1799 | Assembly.instruction_cmp | |
| 1800 | {src1 = indexTemp, | |
| 1801 | src2 = Operand.immediate_word rangeK, | |
| 1802 | size = Size.LONG}, | |
| 1803 | Assembly.instruction_jcc | |
| 1804 | {condition = Instruction.A, | |
| 1805 | target = Operand.label defaultD}, | |
| 1806 | Assembly.directive_saveregalloc | |
| 1807 | {id = idD, | |
| 1808 | live = MemLocSet.add | |
| 1809 | (MemLocSet.add | |
| 1810 | (LiveSet.toMemLocSet default_live, | |
| 1811 | stackTop ()), | |
| 1812 | frontier ())}, | |
| 1813 | Assembly.instruction_jmp | |
| 1814 | {target = address, | |
| 1815 | absolute = true}, | |
| 1816 | Assembly.directive_saveregalloc | |
| 1817 | {id = idT, | |
| 1818 | live = MemLocSet.add | |
| 1819 | (MemLocSet.add | |
| 1820 | (LiveSet.toMemLocSet live, | |
| 1821 | stackTop ()), | |
| 1822 | frontier ())}, | |
| 1823 | Assembly.directive_force | |
| 1824 | {commit_memlocs = MemLocSet.empty, | |
| 1825 | commit_classes = ClassSet.empty, | |
| 1826 | remove_memlocs = MemLocSet.empty, | |
| 1827 | remove_classes = ClassSet.empty, | |
| 1828 | dead_memlocs = MemLocSet.singleton indexTemp', | |
| 1829 | dead_classes = ClassSet.empty}], | |
| 1830 | AppendList.fromList | |
| 1831 | [Assembly.pseudoop_data (), | |
| 1832 | Assembly.pseudoop_p2align | |
| 1833 | (Immediate.int 4, NONE, NONE), | |
| 1834 | Assembly.label jump_table_label, | |
| 1835 | Assembly.pseudoop_long jump_table, | |
| 1836 | Assembly.pseudoop_text ()]] | |
| 1837 | end | |
| 1838 | ||
| 1839 | fun doit(cases) | |
| 1840 | = let | |
| 1841 | val (cases, | |
| 1842 | minK, maxK, length, | |
| 1843 | shift, mask) | |
| 1844 | = reduce(cases) | |
| 1845 | ||
| 1846 | val rangeK | |
| 1847 | = range(minK,maxK) | |
| 1848 | in | |
| 1849 | if length >= 8 | |
| 1850 | andalso | |
| 1851 | WordX.lt (WordX.div(rangeK,two,{signed=false}), | |
| 1852 | WordX.fromIntInf (IntInf.fromInt length, ws), | |
| 1853 | {signed = false}) | |
| 1854 | then let | |
| 1855 | val cases | |
| 1856 | = List.insertionSort | |
| 1857 | (cases, | |
| 1858 | fn ((k,_),(k',_)) | |
| 1859 | => ltFn(k,k')) | |
| 1860 | in | |
| 1861 | doitTable(cases, | |
| 1862 | minK, maxK, rangeK, | |
| 1863 | shift, mask) | |
| 1864 | end | |
| 1865 | else effectDefault gef | |
| 1866 | {label = label, | |
| 1867 | transfer = transfer} | |
| 1868 | end | |
| 1869 | in | |
| 1870 | case cases | |
| 1871 | of Transfer.Cases.Word cases | |
| 1872 | => doit cases | |
| 1873 | end | |
| 1874 | | _ => effectDefault gef | |
| 1875 | {label = label, | |
| 1876 | transfer = transfer} | |
| 1877 | ||
| 1878 | and fallNone (GEF {...}) | |
| 1879 | {label, live} : Assembly.t AppendList.t | |
| 1880 | = let | |
| 1881 | val liveRegsTransfer = getLiveRegsTransfers | |
| 1882 | (liveTransfers, label) | |
| 1883 | val liveFltRegsTransfer = getLiveFltRegsTransfers | |
| 1884 | (liveTransfers, label) | |
| 1885 | ||
| 1886 | val live | |
| 1887 | = List.fold | |
| 1888 | (liveRegsTransfer, | |
| 1889 | live, | |
| 1890 | fn ((memloc,_,_),live) | |
| 1891 | => LiveSet.remove(live,memloc)) | |
| 1892 | val live | |
| 1893 | = List.fold | |
| 1894 | (liveFltRegsTransfer, | |
| 1895 | live, | |
| 1896 | fn ((memloc,_),live) | |
| 1897 | => LiveSet.remove(live,memloc)) | |
| 1898 | ||
| 1899 | fun default () | |
| 1900 | = AppendList.fromList | |
| 1901 | ((* flushing at near transfer *) | |
| 1902 | (Assembly.directive_cache | |
| 1903 | {caches = [{register = stackTopReg, | |
| 1904 | memloc = stackTop (), | |
| 1905 | reserve = true}, | |
| 1906 | {register = frontierReg, | |
| 1907 | memloc = frontier (), | |
| 1908 | reserve = true}]}):: | |
| 1909 | (Assembly.directive_fltcache | |
| 1910 | {caches | |
| 1911 | = List.map | |
| 1912 | (liveFltRegsTransfer, | |
| 1913 | fn (memloc,_) | |
| 1914 | => {memloc = memloc})}):: | |
| 1915 | (Assembly.directive_cache | |
| 1916 | {caches | |
| 1917 | = List.map | |
| 1918 | (liveRegsTransfer, | |
| 1919 | fn (temp,register,_) | |
| 1920 | => {register = register, | |
| 1921 | memloc = temp, | |
| 1922 | reserve = true})}):: | |
| 1923 | (Assembly.directive_force | |
| 1924 | {commit_memlocs = LiveSet.toMemLocSet live, | |
| 1925 | commit_classes = nearflushClasses, | |
| 1926 | remove_memlocs = MemLocSet.empty, | |
| 1927 | remove_classes = ClassSet.empty, | |
| 1928 | dead_memlocs = MemLocSet.empty, | |
| 1929 | dead_classes = ClassSet.empty}):: | |
| 1930 | (Assembly.instruction_jmp | |
| 1931 | {target = Operand.label label, | |
| 1932 | absolute = false}):: | |
| 1933 | (Assembly.directive_unreserve | |
| 1934 | {registers | |
| 1935 | = (stackTopReg):: | |
| 1936 | (frontierReg):: | |
| 1937 | (List.map | |
| 1938 | (liveRegsTransfer, | |
| 1939 | fn (_,register,_) | |
| 1940 | => register))}):: | |
| 1941 | nil) | |
| 1942 | in | |
| 1943 | case getLayoutInfo label | |
| 1944 | of NONE | |
| 1945 | => default () | |
| 1946 | | SOME (Block.T {...}) | |
| 1947 | => (push label; | |
| 1948 | default ()) | |
| 1949 | end | |
| 1950 | ||
| 1951 | and fallDefault (gef as GEF {generate,...}) | |
| 1952 | {label, live} : Assembly.t AppendList.t | |
| 1953 | = let | |
| 1954 | datatype z = datatype x86JumpInfo.status | |
| 1955 | val liveRegsTransfer = getLiveRegsTransfers | |
| 1956 | (liveTransfers, label) | |
| 1957 | val liveFltRegsTransfer = getLiveFltRegsTransfers | |
| 1958 | (liveTransfers, label) | |
| 1959 | ||
| 1960 | val live | |
| 1961 | = List.fold | |
| 1962 | (liveRegsTransfer, | |
| 1963 | live, | |
| 1964 | fn ((memloc,_,_),live) | |
| 1965 | => LiveSet.remove(live,memloc)) | |
| 1966 | val live | |
| 1967 | = List.fold | |
| 1968 | (liveFltRegsTransfer, | |
| 1969 | live, | |
| 1970 | fn ((memloc,_),live) | |
| 1971 | => LiveSet.remove(live,memloc)) | |
| 1972 | ||
| 1973 | fun default jmp | |
| 1974 | = AppendList.appends | |
| 1975 | [AppendList.fromList | |
| 1976 | [(* flushing at near transfer *) | |
| 1977 | (Assembly.directive_cache | |
| 1978 | {caches = [{register = stackTopReg, | |
| 1979 | memloc = stackTop (), | |
| 1980 | reserve = true}, | |
| 1981 | {register = frontierReg, | |
| 1982 | memloc = frontier (), | |
| 1983 | reserve = true}]}), | |
| 1984 | (Assembly.directive_fltcache | |
| 1985 | {caches | |
| 1986 | = List.map | |
| 1987 | (liveFltRegsTransfer, | |
| 1988 | fn (memloc,_) | |
| 1989 | => {memloc = memloc})}), | |
| 1990 | (Assembly.directive_cache | |
| 1991 | {caches | |
| 1992 | = List.map | |
| 1993 | (liveRegsTransfer, | |
| 1994 | fn (temp,register,_) | |
| 1995 | => {register = register, | |
| 1996 | memloc = temp, | |
| 1997 | reserve = true})}), | |
| 1998 | (Assembly.directive_force | |
| 1999 | {commit_memlocs = LiveSet.toMemLocSet live, | |
| 2000 | commit_classes = nearflushClasses, | |
| 2001 | remove_memlocs = MemLocSet.empty, | |
| 2002 | remove_classes = ClassSet.empty, | |
| 2003 | dead_memlocs = MemLocSet.empty, | |
| 2004 | dead_classes = ClassSet.empty})], | |
| 2005 | if jmp | |
| 2006 | then AppendList.single | |
| 2007 | (Assembly.instruction_jmp | |
| 2008 | {target = Operand.label label, | |
| 2009 | absolute = false}) | |
| 2010 | else AppendList.empty, | |
| 2011 | AppendList.single | |
| 2012 | (Assembly.directive_unreserve | |
| 2013 | {registers | |
| 2014 | = (stackTopReg):: | |
| 2015 | (frontierReg):: | |
| 2016 | (List.map | |
| 2017 | (liveRegsTransfer, | |
| 2018 | fn (_,register,_) | |
| 2019 | => register))})] | |
| 2020 | in | |
| 2021 | case getLayoutInfo label | |
| 2022 | of NONE | |
| 2023 | => default true | |
| 2024 | | SOME (Block.T {...}) | |
| 2025 | => (case getNear(jumpInfo, label) | |
| 2026 | of Count 1 | |
| 2027 | => generate gef | |
| 2028 | {label = label, | |
| 2029 | falling = true, | |
| 2030 | unique = true} | |
| 2031 | | _ => AppendList.append | |
| 2032 | (default false, | |
| 2033 | AppendList.cons | |
| 2034 | (Assembly.directive_reset (), | |
| 2035 | (generate gef | |
| 2036 | {label = label, | |
| 2037 | falling = true, | |
| 2038 | unique = false})))) | |
| 2039 | end | |
| 2040 | ||
| 2041 | fun make {generate, effect, fall} | |
| 2042 | = generate (GEF {generate = generate, | |
| 2043 | effect = effect, | |
| 2044 | fall = fall}) | |
| 2045 | ||
| 2046 | val generate | |
| 2047 | = case optimize | |
| 2048 | of 0 => make {generate = generateAll, | |
| 2049 | effect = effectDefault, | |
| 2050 | fall = fallNone} | |
| 2051 | | _ => make {generate = generateAll, | |
| 2052 | effect = effectJumpTable, | |
| 2053 | fall = fallDefault} | |
| 2054 | ||
| 2055 | val _ = List.foreach | |
| 2056 | (blocks, | |
| 2057 | fn Block.T {entry, ...} | |
| 2058 | => (case entry | |
| 2059 | of Func {label, ...} => enque label | |
| 2060 | | _ => ())) | |
| 2061 | fun doit () : Assembly.t list list | |
| 2062 | = (case deque () | |
| 2063 | of NONE => [] | |
| 2064 | | SOME label | |
| 2065 | => (case AppendList.toList (generate {label = label, | |
| 2066 | falling = false, | |
| 2067 | unique = false}) | |
| 2068 | of [] => doit () | |
| 2069 | | block => block::(doit ()))) | |
| 2070 | val assembly = doit () | |
| 2071 | val symbol_stubs = makeDarwinSymbolStubs () | |
| 2072 | val _ = destLayoutInfo () | |
| 2073 | val _ = destProfileLabel () | |
| 2074 | ||
| 2075 | val assembly = [Assembly.pseudoop_text ()]::assembly | |
| 2076 | val assembly = | |
| 2077 | if List.isEmpty symbol_stubs | |
| 2078 | then assembly | |
| 2079 | else symbol_stubs :: assembly | |
| 2080 | val assembly = | |
| 2081 | if List.isEmpty data | |
| 2082 | then assembly | |
| 2083 | else data::assembly | |
| 2084 | in | |
| 2085 | assembly | |
| 2086 | end | |
| 2087 | ||
| 2088 | val (generateTransfers, generateTransfers_msg) | |
| 2089 | = tracerTop | |
| 2090 | "generateTransfers" | |
| 2091 | generateTransfers | |
| 2092 | ||
| 2093 | fun generateTransfers_totals () | |
| 2094 | = (generateTransfers_msg (); | |
| 2095 | Control.indent (); | |
| 2096 | x86Liveness.LiveInfo.verifyLiveInfo_msg (); | |
| 2097 | x86JumpInfo.verifyJumpInfo_msg (); | |
| 2098 | x86EntryTransfer.verifyEntryTransfer_msg (); | |
| 2099 | x86LoopInfo.createLoopInfo_msg (); | |
| 2100 | x86LiveTransfers.computeLiveTransfers_totals (); | |
| 2101 | Control.unindent ()) | |
| 2102 | end |