Implement catch on ARM.

runtime/vm/assembler_arm.cc

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 #include "vm/globals.h"
 #if defined(TARGET_ARCH_ARM)
 
 #include "vm/assembler.h"
 #include "vm/simulator.h"
 #include "vm/runtime_entry.h"
@@ skipping 1243 matching lines @@
       if (value_high != 0) {
         movt(rd, value_high);
       }
       add(rd, PP, ShifterOperand(LR));
     }
     ldr(rd, Address(rd, offset_lo));
   }
 }
 
 
+void Assembler::LoadPoolPointer() {
+  const intptr_t object_pool_pc_dist =
+     Instructions::HeaderSize() - Instructions::object_pool_offset() +
+     CodeSize() + Instr::kPCReadOffset;
+  LoadFromOffset(kLoadWord, PP, PC, -object_pool_pc_dist);
+}
+
+
 void Assembler::LoadObject(Register rd, const Object& object) {
   // Smis and VM heap objects are never relocated; do not use object pool.
   if (object.IsSmi()) {
     LoadImmediate(rd, reinterpret_cast<int32_t>(object.raw()));
   } else if (object.InVMHeap()) {
     // Make sure that class CallPattern is able to decode this load immediate.
     const int32_t object_raw = reinterpret_cast<int32_t>(object.raw());
     movw(rd, Utils::Low16Bits(object_raw));
     const uint16_t value_high = Utils::High16Bits(object_raw);
     if (value_high != 0) {
@@ skipping 691 matching lines @@
 
   if (offset != 0) {
     // Adjust saved PC for any intrinsic code that could have been generated
     // before a frame is created. Use PP as temp register.
     ldr(PP, Address(FP, 2 * kWordSize));
     AddImmediate(PP, PP, -offset);
     str(PP, Address(FP, 2 * kWordSize));
   }
 
   // Setup pool pointer for this dart function.
-  const intptr_t object_pool_pc_dist =
-     Instructions::HeaderSize() - Instructions::object_pool_offset() +
-     CodeSize() + Instr::kPCReadOffset;
-  ldr(PP, Address(PC, -object_pool_pc_dist));
+  LoadPoolPointer();
 
   // Reserve space for locals.
   AddImmediate(SP, -frame_size);
 }
 
 
 void Assembler::LeaveDartFrame() {
   LeaveFrame((1 << PP) | (1 << FP) | (1 << LR));
   // Adjust SP for PC pushed in EnterDartFrame.
   AddImmediate(SP, kWordSize);
 }
 
 
 void Assembler::EnterStubFrame(bool uses_pp) {
   // Push 0 as saved PC for stub frames.
   mov(IP, ShifterOperand(LR));
   mov(LR, ShifterOperand(0));
   RegList regs = (1 << FP) | (1 << IP) | (1 << LR);
   if (uses_pp) {
     regs |= (1 << PP);
   }
   EnterFrame(regs, 0);
   if (uses_pp) {
     // Setup pool pointer for this stub.
-    const intptr_t object_pool_pc_dist =
-       Instructions::HeaderSize() - Instructions::object_pool_offset() +
-       CodeSize() + Instr::kPCReadOffset;
-    ldr(PP, Address(PC, -object_pool_pc_dist));
+    LoadPoolPointer();
   }
 }
 
 
 void Assembler::LeaveStubFrame(bool uses_pp) {
   RegList regs = (1 << FP) | (1 << LR);
   if (uses_pp) {
     regs |= (1 << PP);
   }
   LeaveFrame(regs);
@@ skipping 107 matching lines @@
 
 const char* Assembler::FpuRegisterName(FpuRegister reg) {
   ASSERT((0 <= reg) && (reg < kNumberOfFpuRegisters));
   return fpu_reg_names[reg];
 }
 
 }  // namespace dart
 
 #endif  // defined TARGET_ARCH_ARM