hphp/runtime/vm/jit/translator-inline.h

   1 /*
   2    +----------------------------------------------------------------------+
   3    | HipHop for PHP                                                       |
   4    +----------------------------------------------------------------------+
   5    | Copyright (c) 2010-present Facebook, Inc. (http://www.facebook.com)  |
   6    +----------------------------------------------------------------------+
   7    | This source file is subject to version 3.01 of the PHP license,      |
   8    | that is bundled with this package in the file LICENSE, and is        |
   9    | available through the world-wide-web at the following url:           |
  10    | http://www.php.net/license/3_01.txt                                  |
  11    | If you did not receive a copy of the PHP license and are unable to   |
  12    | obtain it through the world-wide-web, please send a note to          |
  13    | license@php.net so we can mail you a copy immediately.               |
  14    +----------------------------------------------------------------------+
  15 */
  16
  17 #pragma once
  18
  19 #include "hphp/runtime/base/execution-context.h"
  20 #include "hphp/runtime/vm/func.h"
  21 #include "hphp/runtime/vm/resumable.h"
  22 #include "hphp/runtime/vm/vm-regs.h"
  23 #include "hphp/runtime/vm/jit/stack-offsets.h"
  24 #include "hphp/runtime/vm/jit/translator.h"
  25
  26 /*
  27  * Because of a circular dependence with ExecutionContext, these
  28  * translation-related helpers cannot live in translator.h.
  29  */
  30 namespace HPHP {
  31
  32 ///////////////////////////////////////////////////////////////////////////////
  33
  34 inline ActRec* liveFrame() { return vmfp(); }
  35 inline const Func* liveFunc() { return liveFrame()->func(); }
  36 inline const Unit* liveUnit() { return liveFunc()->unit(); }
  37 inline Class* liveClass() { return liveFunc()->cls(); }
  38 inline ResumeMode liveResumeMode() { return resumeModeFromActRec(liveFrame()); }
  39 inline bool liveHasThis() { return liveClass() && liveFrame()->hasThis(); }
  40 inline SrcKey liveSK() {
  41   return { liveFunc(), vmpc(), liveResumeMode() };
  42 }
  43 inline jit::SBInvOffset liveSpOff() {
  44   auto const stackBase = Stack::anyFrameStackBase(liveFrame());
  45   return jit::SBInvOffset{safe_cast<int32_t>(stackBase - vmsp())};
  46 }
  47
  48 ///////////////////////////////////////////////////////////////////////////////
  49
  50 namespace jit {
  51
  52 ///////////////////////////////////////////////////////////////////////////////
  53
  54 inline int cellsToBytes(int nCells) {
  55   return safe_cast<int32_t>(nCells * ssize_t(sizeof(TypedValue)));
  56 }
  57
  58 inline int localOffset(int locId) {
  59   return -cellsToBytes(locId + 1);
  60 }
  61
  62 ///////////////////////////////////////////////////////////////////////////////
  63
  64 }}
  65