25 #include "precompiled.hpp"
  26 #include "asm/assembler.hpp"
  27 #include "assembler_arm.inline.hpp"
  28 #include "code/debugInfoRec.hpp"
  29 #include "code/icBuffer.hpp"
  30 #include "code/vtableStubs.hpp"
  31 #include "interpreter/interpreter.hpp"
  32 #include "logging/log.hpp"
  33 #include "memory/resourceArea.hpp"
  34 #include "oops/compiledICHolder.hpp"
  35 #include "runtime/sharedRuntime.hpp"
  36 #include "runtime/vframeArray.hpp"
  37 #include "utilities/align.hpp"
  38 #include "vmreg_arm.inline.hpp"
  39 #ifdef COMPILER1
  40 #include "c1/c1_Runtime1.hpp"
  41 #endif
  42 #ifdef COMPILER2
  43 #include "opto/runtime.hpp"
  44 #endif
  45 #ifdef SHARK
  46 #include "compiler/compileBroker.hpp"
  47 #include "shark/sharkCompiler.hpp"
  48 #endif
  49 
  50 #define __ masm->
  51 
  52 class RegisterSaver {
  53 public:
  54 
  55   // Special registers:
  56   //              32-bit ARM     64-bit ARM
  57   //  Rthread:       R10            R28
  58   //  LR:            R14            R30
  59 
  60   // Rthread is callee saved in the C ABI and never changed by compiled code:
  61   // no need to save it.
  62 
  63   // 2 slots for LR: the one at LR_offset and an other one at R14/R30_offset.
  64   // The one at LR_offset is a return address that is needed by stack walking.
  65   // A c2 method uses LR as a standard register so it may be live when we
  66   // branch to the runtime. The slot at R14/R30_offset is for the value of LR
  67   // in case it's live in the method we are coming from.
  68 

  25 #include "precompiled.hpp"
  26 #include "asm/assembler.hpp"
  27 #include "assembler_arm.inline.hpp"
  28 #include "code/debugInfoRec.hpp"
  29 #include "code/icBuffer.hpp"
  30 #include "code/vtableStubs.hpp"
  31 #include "interpreter/interpreter.hpp"
  32 #include "logging/log.hpp"
  33 #include "memory/resourceArea.hpp"
  34 #include "oops/compiledICHolder.hpp"
  35 #include "runtime/sharedRuntime.hpp"
  36 #include "runtime/vframeArray.hpp"
  37 #include "utilities/align.hpp"
  38 #include "vmreg_arm.inline.hpp"
  39 #ifdef COMPILER1
  40 #include "c1/c1_Runtime1.hpp"
  41 #endif
  42 #ifdef COMPILER2
  43 #include "opto/runtime.hpp"
  44 #endif




  45 
  46 #define __ masm->
  47 
  48 class RegisterSaver {
  49 public:
  50 
  51   // Special registers:
  52   //              32-bit ARM     64-bit ARM
  53   //  Rthread:       R10            R28
  54   //  LR:            R14            R30
  55 
  56   // Rthread is callee saved in the C ABI and never changed by compiled code:
  57   // no need to save it.
  58 
  59   // 2 slots for LR: the one at LR_offset and an other one at R14/R30_offset.
  60   // The one at LR_offset is a return address that is needed by stack walking.
  61   // A c2 method uses LR as a standard register so it may be live when we
  62   // branch to the runtime. The slot at R14/R30_offset is for the value of LR
  63   // in case it's live in the method we are coming from.
  64