ARM64: push/pop registers in stubs for safepoints

src/arm64/macro-assembler-arm64.cc

 // Copyright 2013 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 4143 matching lines @@
 void MacroAssembler::PushSafepointRegisters() {
   // Safepoints expect a block of kNumSafepointRegisters values on the stack, so
   // adjust the stack for unsaved registers.
   const int num_unsaved = kNumSafepointRegisters - kNumSafepointSavedRegisters;
   ASSERT(num_unsaved >= 0);
   Claim(num_unsaved);
   PushXRegList(kSafepointSavedRegisters);
 }
 
 
-void MacroAssembler::PushSafepointFPRegisters() {
+void MacroAssembler::PushSafepointRegistersAndDoubles() {
+  PushSafepointRegisters();
   PushCPURegList(CPURegList(CPURegister::kFPRegister, kDRegSizeInBits,
                             FPRegister::kAllocatableFPRegisters));
 }
 
 
-void MacroAssembler::PopSafepointFPRegisters() {
+void MacroAssembler::PopSafepointRegistersAndDoubles() {
   PopCPURegList(CPURegList(CPURegister::kFPRegister, kDRegSizeInBits,
                            FPRegister::kAllocatableFPRegisters));
+  PopSafepointRegisters();
 }
 
 
 int MacroAssembler::SafepointRegisterStackIndex(int reg_code) {
   // Make sure the safepoint registers list is what we expect.
   ASSERT(CPURegList::GetSafepointSavedRegisters().list() == 0x6ffcffff);
 
   // Safepoint registers are stored contiguously on the stack, but not all the
   // registers are saved. The following registers are excluded:
   //  - x16 and x17 (ip0 and ip1) because they shouldn't be preserved outside of
@@ skipping 928 matching lines @@
 
 CPURegister UseScratchRegisterScope::AcquireNextAvailable(
     CPURegList* available) {
   CHECK(!available->IsEmpty());
   CPURegister result = available->PopLowestIndex();
   ASSERT(!AreAliased(result, xzr, csp));
   return result;
 }
 
 
+CPURegister UseScratchRegisterScope::UnsafeAcquire(CPURegList* available,
+                                                   const CPURegister& reg) {
+  ASSERT(available->IncludesAliasOf(reg));
+  available->Remove(reg);
+  return reg;
+}
+
+
 #define __ masm->
 
 
 void InlineSmiCheckInfo::Emit(MacroAssembler* masm, const Register& reg,
                               const Label* smi_check) {
   Assembler::BlockPoolsScope scope(masm);
   if (reg.IsValid()) {
     ASSERT(smi_check->is_bound());
     ASSERT(reg.Is64Bits());
 
@@ skipping 31 matching lines @@
   }
 }
 
 
 #undef __
 
 
 } }  // namespace v8::internal
 
 #endif  // V8_TARGET_ARCH_ARM64