ARM: Implement DoInstanceOfKnownGlobal stub

src/arm/macro-assembler-arm.cc

 // Copyright 2010 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 467 matching lines @@
 
 void MacroAssembler::PopSafepointRegistersAndDoubles() {
   for (int i = 0; i < DwVfpRegister::kNumAllocatableRegisters; i++) {
     vldr(DwVfpRegister::FromAllocationIndex(i), sp, i * kDoubleSize);
   }
   add(sp, sp, Operand(DwVfpRegister::kNumAllocatableRegisters *
                       kDoubleSize));
   PopSafepointRegisters();
 }
 
+void MacroAssembler::StoreToSafepointRegisterSlot(Register reg) {
+  str(reg, SafepointRegisterSlot(reg));
+}
+
+
 int MacroAssembler::SafepointRegisterStackIndex(int reg_code) {
   // The registers are pushed starting with the highest encoding,
   // which means that lowest encodings are closest to the stack pointer.
   ASSERT(reg_code >= 0 && reg_code < kNumSafepointRegisters);
   return reg_code;
 }
 
 
+MemOperand MacroAssembler::SafepointRegisterSlot(Register reg) {
+  return MemOperand(sp, SafepointRegisterStackIndex(reg.code()) * kInstrSize);
+}
+
+
 void MacroAssembler::Ldrd(Register dst1, Register dst2,
                           const MemOperand& src, Condition cond) {
   ASSERT(src.rm().is(no_reg));
   ASSERT(!dst1.is(lr));  // r14.
   ASSERT_EQ(0, dst1.code() % 2);
   ASSERT_EQ(dst1.code() + 1, dst2.code());
 
   // Generate two ldr instructions if ldrd is not available.
   if (CpuFeatures::IsSupported(ARMv7)) {
     CpuFeatures::Scope scope(ARMv7);
@@ skipping 1672 matching lines @@
   Call(function);
   int stack_passed_arguments = (num_arguments <= 4) ? 0 : num_arguments - 4;
   if (OS::ActivationFrameAlignment() > kPointerSize) {
     ldr(sp, MemOperand(sp, stack_passed_arguments * kPointerSize));
   } else {
     add(sp, sp, Operand(stack_passed_arguments * sizeof(kPointerSize)));
   }
 }
 
 
+void MacroAssembler::GetRelocatedValueLocation(Register ldr_location,
+                               Register result) {
+  const uint32_t kLdrOffsetMask = (1 << 12) - 1;
+  const int32_t kPCRegOffset = 2 * kPointerSize;
+  ldr(result, MemOperand(ldr_location));
+  if (FLAG_debug_code) {
+    // Check that the instruction is a ldr reg, [pc + offset] .
+    and_(result, result, Operand(kLdrPCPattern));
+    cmp(result, Operand(kLdrPCPattern));
+    Check(eq, "The instruction to patch should be a load from pc.");
+    // Result was clobbered. Restore it.
+    ldr(result, MemOperand(ldr_location));
+  }
+  // Get the address of the constant.
+  and_(result, result, Operand(kLdrOffsetMask));
+  add(result, ldr_location, Operand(result));
+  add(result, result, Operand(kPCRegOffset));
+}
+
+
 #ifdef ENABLE_DEBUGGER_SUPPORT
 CodePatcher::CodePatcher(byte* address, int instructions)
     : address_(address),
       instructions_(instructions),
       size_(instructions * Assembler::kInstrSize),
       masm_(address, size_ + Assembler::kGap) {
   // Create a new macro assembler pointing to the address of the code to patch.
   // The size is adjusted with kGap on order for the assembler to generate size
   // bytes of instructions without failing with buffer size constraints.
   ASSERT(masm_.reloc_info_writer.pos() == address_ + size_ + Assembler::kGap);
@@ skipping 17 matching lines @@
 
 void CodePatcher::Emit(Address addr) {
   masm()->emit(reinterpret_cast<Instr>(addr));
 }
 #endif  // ENABLE_DEBUGGER_SUPPORT
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM