Exemplo n.º 1
0
void TR::ARMSystemLinkage::createEpilogue(TR::Instruction *cursor)
   {
   TR::CodeGenerator *codeGen = cg();
   const TR::ARMLinkageProperties& properties = getProperties();
   TR::Machine *machine = codeGen->machine();
   TR::Node *lastNode = cursor->getNode();
   TR::ResolvedMethodSymbol* bodySymbol = comp()->getJittedMethodSymbol();
   TR::RealRegister *stackPtr = machine->getRealRegister(properties.getStackPointerRegister());

   // restore link register (r14)
   auto *stackSlot = new (trHeapMemory()) TR::MemoryReference(stackPtr, bodySymbol->getLocalMappingCursor(), codeGen);
   cursor = generateMemSrc1Instruction(cg(), ARMOp_ldr, lastNode, stackSlot, machine->getRealRegister(TR::RealRegister::gr14), cursor);

   // restore all preserved registers
   for (int r = TR::RealRegister::gr4; r <= TR::RealRegister::gr11; ++r)
      {
      auto *stackSlot = new (trHeapMemory()) TR::MemoryReference(stackPtr, (TR::RealRegister::gr11 - r + 1)*4 + bodySymbol->getLocalMappingCursor(), codeGen);
      cursor = generateMemSrc1Instruction(cg(), ARMOp_ldr, lastNode, stackSlot, machine->getRealRegister((TR::RealRegister::RegNum)r), cursor);
      }

   // remove space for preserved registers
   auto frameSize = codeGen->getFrameSizeInBytes();
   cursor = generateTrg1Src1ImmInstruction(codeGen, ARMOp_add, lastNode, stackPtr, stackPtr, frameSize, 0, cursor);

   // return using `mov r15, r14`
   TR::RealRegister *gr14 = machine->getRealRegister(TR::RealRegister::gr14);
   TR::RealRegister *gr15 = machine->getRealRegister(TR::RealRegister::gr15);
   cursor = generateTrg1Src1Instruction(codeGen, ARMOp_mov, lastNode, gr15, gr14, cursor);
   }
Exemplo n.º 2
0
void
TR::ARM64SystemLinkage::createEpilogue(TR::Instruction *cursor)
   {
   TR::CodeGenerator *codeGen = cg();
   const TR::ARM64LinkageProperties& properties = getProperties();
   TR::Machine *machine = codeGen->machine();
   TR::Node *lastNode = cursor->getNode();
   TR::ResolvedMethodSymbol *bodySymbol = comp()->getJittedMethodSymbol();
   TR::RealRegister *sp = machine->getRealRegister(properties.getStackPointerRegister());

   // restore callee-saved registers
   uint32_t offset = bodySymbol->getLocalMappingCursor();
   for (int r = TR::RealRegister::x19; r <= TR::RealRegister::x28; r++)
      {
      TR::RealRegister *rr = machine->getRealRegister((TR::RealRegister::RegNum)r);
      if (rr->getHasBeenAssignedInMethod())
         {
         TR::MemoryReference *stackSlot = new (trHeapMemory()) TR::MemoryReference(sp, offset, codeGen);
         cursor = generateTrg1MemInstruction(cg(), TR::InstOpCode::ldrimmx, lastNode, rr, stackSlot, cursor);
         offset += 8;
         }
      }
   for (int r = TR::RealRegister::v8; r <= TR::RealRegister::v15; r++)
      {
      TR::RealRegister *rr = machine->getRealRegister((TR::RealRegister::RegNum)r);
      if (rr->getHasBeenAssignedInMethod())
         {
         TR::MemoryReference *stackSlot = new (trHeapMemory()) TR::MemoryReference(sp, offset, codeGen);
         cursor = generateTrg1MemInstruction(cg(), TR::InstOpCode::vldrimmd, lastNode, rr, stackSlot, cursor);
         offset += 8;
         }
      }

   // restore link register (x30)
   TR::RealRegister *lr = machine->getRealRegister(TR::RealRegister::lr);
   if (machine->getLinkRegisterKilled())
      {
      TR::MemoryReference *stackSlot = new (trHeapMemory()) TR::MemoryReference(sp, 0, codeGen);
      cursor = generateTrg1MemInstruction(cg(), TR::InstOpCode::ldrimmx, lastNode, lr, stackSlot, cursor);
      }

   // remove space for preserved registers
   uint32_t frameSize = codeGen->getFrameSizeInBytes();
   if (constantIsUnsignedImm12(frameSize))
      {
      cursor = generateTrg1Src1ImmInstruction(codeGen, TR::InstOpCode::addimmx, lastNode, sp, sp, frameSize, cursor);
      }
   else
      {
      TR_UNIMPLEMENTED();
      }

   // return
   cursor = generateRegBranchInstruction(codeGen, TR::InstOpCode::ret, lastNode, lr, cursor);
   }
Exemplo n.º 3
0
void
TR::ARM64SystemLinkage::createPrologue(TR::Instruction *cursor, List<TR::ParameterSymbol> &parmList)
   {
   TR::CodeGenerator *codeGen = cg();
   TR::Machine *machine = codeGen->machine();
   TR::ResolvedMethodSymbol *bodySymbol = comp()->getJittedMethodSymbol();
   const TR::ARM64LinkageProperties& properties = getProperties();
   TR::RealRegister *sp = machine->getRealRegister(properties.getStackPointerRegister());
   TR::Node *firstNode = comp()->getStartTree()->getNode();

   // allocate stack space
   uint32_t frameSize = (uint32_t)codeGen->getFrameSizeInBytes();
   if (constantIsUnsignedImm12(frameSize))
      {
      cursor = generateTrg1Src1ImmInstruction(codeGen, TR::InstOpCode::subimmx, firstNode, sp, sp, frameSize, cursor);
      }
   else
      {
      TR_UNIMPLEMENTED();
      }

   // save link register (x30)
   if (machine->getLinkRegisterKilled())
      {
      TR::MemoryReference *stackSlot = new (trHeapMemory()) TR::MemoryReference(sp, 0, codeGen);
      cursor = generateMemSrc1Instruction(cg(), TR::InstOpCode::strimmx, firstNode, stackSlot, machine->getRealRegister(TR::RealRegister::x30), cursor);
      }

   // spill argument registers
   int32_t nextIntArgReg = 0;
   int32_t nextFltArgReg = 0;
   ListIterator<TR::ParameterSymbol> parameterIterator(&parmList);
   for (TR::ParameterSymbol *parameter = parameterIterator.getFirst();
        parameter != NULL && (nextIntArgReg < getProperties().getNumIntArgRegs() || nextFltArgReg < getProperties().getNumFloatArgRegs());
        parameter = parameterIterator.getNext())
      {
      TR::MemoryReference *stackSlot = new (trHeapMemory()) TR::MemoryReference(sp, parameter->getParameterOffset(), codeGen);
      TR::InstOpCode::Mnemonic op;

      switch (parameter->getDataType())
         {
         case TR::Int8:
         case TR::Int16:
         case TR::Int32:
         case TR::Int64:
         case TR::Address:
            if (nextIntArgReg < getProperties().getNumIntArgRegs())
               {
               op = (parameter->getSize() == 8) ? TR::InstOpCode::strimmx : TR::InstOpCode::strimmw;
               cursor = generateMemSrc1Instruction(cg(), op, firstNode, stackSlot, machine->getRealRegister((TR::RealRegister::RegNum)(TR::RealRegister::x0 + nextIntArgReg)), cursor);
               nextIntArgReg++;
               }
            else
               {
               nextIntArgReg = getProperties().getNumIntArgRegs() + 1;
               }
            break;
         case TR::Float:
         case TR::Double:
            if (nextFltArgReg < getProperties().getNumFloatArgRegs())
               {
               op = (parameter->getSize() == 8) ? TR::InstOpCode::vstrimmd : TR::InstOpCode::vstrimms;
               cursor = generateMemSrc1Instruction(cg(), op, firstNode, stackSlot, machine->getRealRegister((TR::RealRegister::RegNum)(TR::RealRegister::v0 + nextFltArgReg)), cursor);
               nextFltArgReg++;
               }
            else
               {
               nextFltArgReg = getProperties().getNumFloatArgRegs() + 1;
               }
            break;
         case TR::Aggregate:
            TR_ASSERT(false, "Function parameters of aggregate types are not currently supported on AArch64.");
            break;
         default:
            TR_ASSERT(false, "Unknown parameter type.");
         }
      }

   // save callee-saved registers
   uint32_t offset = bodySymbol->getLocalMappingCursor();
   for (int r = TR::RealRegister::x19; r <= TR::RealRegister::x28; r++)
      {
      TR::RealRegister *rr = machine->getRealRegister((TR::RealRegister::RegNum)r);
      if (rr->getHasBeenAssignedInMethod())
         {
         TR::MemoryReference *stackSlot = new (trHeapMemory()) TR::MemoryReference(sp, offset, codeGen);
         cursor = generateMemSrc1Instruction(cg(), TR::InstOpCode::strimmx, firstNode, stackSlot, rr, cursor);
         offset += 8;
         }
      }
   for (int r = TR::RealRegister::v8; r <= TR::RealRegister::v15; r++)
      {
      TR::RealRegister *rr = machine->getRealRegister((TR::RealRegister::RegNum)r);
      if (rr->getHasBeenAssignedInMethod())
         {
         TR::MemoryReference *stackSlot = new (trHeapMemory()) TR::MemoryReference(sp, offset, codeGen);
         cursor = generateMemSrc1Instruction(cg(), TR::InstOpCode::vstrimmd, firstNode, stackSlot, rr, cursor);
         offset += 8;
         }
      }
   }
Exemplo n.º 4
0
void TR::ARMSystemLinkage::createPrologue(TR::Instruction *cursor)
   {
   TR::CodeGenerator *codeGen = cg();
   const TR::ARMLinkageProperties& properties = getProperties();
   TR::Machine *machine = codeGen->machine();
   TR::ResolvedMethodSymbol* bodySymbol = comp()->getJittedMethodSymbol();
   TR::Node *firstNode = comp()->getStartTree()->getNode();
   TR::RealRegister *stackPtr = machine->getRealRegister(properties.getStackPointerRegister());

   // Entry breakpoint
   //
   if (comp()->getOption(TR_EntryBreakPoints))
      {
      cursor = new (trHeapMemory()) TR::Instruction(cursor, ARMOp_bad, firstNode, cg());
      }

   // allocate stack space
   auto frameSize = codeGen->getFrameSizeInBytes();
   cursor = generateTrg1Src1ImmInstruction(codeGen, ARMOp_sub, firstNode, stackPtr, stackPtr, frameSize, 0, cursor);

   // spill argument registers
   auto nextIntArgReg = 0;
   auto nextFltArgReg = 0;
   ListIterator<TR::ParameterSymbol> parameterIterator(&bodySymbol->getParameterList());
   for (TR::ParameterSymbol *parameter = parameterIterator.getFirst();
        parameter!=NULL && (nextIntArgReg < getProperties().getNumIntArgRegs() || nextFltArgReg < getProperties().getNumFloatArgRegs());
        parameter=parameterIterator.getNext())
      {
      auto *stackSlot = new (trHeapMemory()) TR::MemoryReference(stackPtr, parameter->getParameterOffset(), codeGen);
      switch (parameter->getDataType())
         {
         case TR::Int8:
         case TR::Int16:
         case TR::Int32:
         case TR::Address:
            if (nextIntArgReg < getProperties().getNumIntArgRegs())
               {
               cursor = generateMemSrc1Instruction(cg(), ARMOp_str, firstNode, stackSlot, machine->getRealRegister((TR::RealRegister::RegNum)(TR::RealRegister::gr0 + nextIntArgReg)), cursor);
               nextIntArgReg++;
               }
            else
               {
               nextIntArgReg = getProperties().getNumIntArgRegs() + 1;
               }
            break;
         case TR::Int64:
            nextIntArgReg += nextIntArgReg & 0x1; // round to next even number
            if (nextIntArgReg + 1 < getProperties().getNumIntArgRegs())
               {
               cursor = generateMemSrc1Instruction(cg(), ARMOp_str, firstNode, stackSlot, machine->getRealRegister((TR::RealRegister::RegNum)(TR::RealRegister::gr0 + nextIntArgReg)), cursor);
               stackSlot = new (trHeapMemory()) TR::MemoryReference(stackPtr, parameter->getParameterOffset() + 4, codeGen);
               cursor = generateMemSrc1Instruction(cg(), ARMOp_str, firstNode, stackSlot, machine->getRealRegister((TR::RealRegister::RegNum)(TR::RealRegister::gr0 + nextIntArgReg + 1)), cursor);
               nextIntArgReg += 2;
               }
            else
               {
               nextIntArgReg = getProperties().getNumIntArgRegs() + 1;
               }
            break;
         case TR::Float:
            comp()->failCompilation<UnsupportedParameterType>("Compiling methods with a single precision floating point parameter is not supported");
            break;
         case TR::Double:
            if (nextFltArgReg < getProperties().getNumFloatArgRegs())
               {
               cursor = generateMemSrc1Instruction(cg(), ARMOp_fstd, firstNode, stackSlot, machine->getRealRegister((TR::RealRegister::RegNum)(TR::RealRegister::fp0 + nextFltArgReg)), cursor);
               nextFltArgReg += 1;
               }
            else
               {
               nextFltArgReg = getProperties().getNumFloatArgRegs() + 1;
               }
            break;
         case TR::Aggregate:
            TR_ASSERT(false, "Function parameters of aggregate types are not currently supported on ARM.");
         }
      }

   // save all preserved registers
   for (int r = TR::RealRegister::gr4; r <= TR::RealRegister::gr11; ++r)
      {
      auto *stackSlot = new (trHeapMemory()) TR::MemoryReference(stackPtr, (TR::RealRegister::gr11 - r + 1)*4 + bodySymbol->getLocalMappingCursor(), codeGen);
      cursor = generateMemSrc1Instruction(cg(), ARMOp_str, firstNode, stackSlot, machine->getRealRegister((TR::RealRegister::RegNum)r), cursor);
      }

   // save link register (r14)
   auto *stackSlot = new (trHeapMemory()) TR::MemoryReference(stackPtr, bodySymbol->getLocalMappingCursor(), codeGen);
   cursor = generateMemSrc1Instruction(cg(), ARMOp_str, firstNode, stackSlot, machine->getRealRegister(TR::RealRegister::gr14), cursor);
   }