hphp/runtime/vm/act-rec-defs.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 #ifndef incl_HPHP_ACT_REC_DEFS_H_
  18 #define incl_HPHP_ACT_REC_DEFS_H_
  19
  20 #include "hphp/runtime/vm/act-rec.h"
  21
  22 #include "hphp/runtime/vm/jit/tc.h"
  23 #include "hphp/runtime/vm/jit/unique-stubs.h"
  24
  25 #include "hphp/util/assertions.h"
  26
  27 /*
  28  * This is separate from act-rec-inl.h in order to keep the transitive header
  29  * dependencies of act-rec.h as tight as possible.
  30  *
  31  * However, for performance reasons, we need to make sure certain functions get
  32  * inlined.  Callers of these functions need to additionally include this file.
  33  */
  34
  35 namespace HPHP {
  36
  37 ///////////////////////////////////////////////////////////////////////////////
  38
  39 inline void ActRec::setReturnVMExit() {
  40   assertx(isReturnHelper(jit::tc::ustubs().callToExit));
  41   m_sfp = nullptr;
  42   m_savedRip = reinterpret_cast<uintptr_t>(jit::tc::ustubs().callToExit);
  43   m_callOffAndFlags = 0;
  44 #ifdef __powerpc64__
  45   // Save the TOC value, as it will need to be restored when unwinding.
  46   asm ("mr %0, 2" : "=r" (m_savedToc));
  47 #endif
  48 }
  49
  50 ///////////////////////////////////////////////////////////////////////////////
  51
  52 }
  53
  54 #endif