A64: Handle a few TODOs.

src/a64/macro-assembler-a64.h

 // 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 520 matching lines @@
   //
   // Even if the current stack pointer is not the system stack pointer (csp),
   // Push (and derived methods) will still modify the system stack pointer in
   // order to comply with ABI rules about accessing memory below the system
   // stack pointer.
   //
   // Other than the registers passed into Pop, the stack pointer and (possibly)
   // the system stack pointer, these methods do not modify any other registers.
   void Push(const CPURegister& src0, const CPURegister& src1 = NoReg,
             const CPURegister& src2 = NoReg, const CPURegister& src3 = NoReg);
+  void Push(const CPURegister& src0, const CPURegister& src1,
+            const CPURegister& src2, const CPURegister& src3,
+            const CPURegister& src4, const CPURegister& src5 = NoReg,
+            const CPURegister& src6 = NoReg, const CPURegister& src7 = NoReg);
   void Pop(const CPURegister& dst0, const CPURegister& dst1 = NoReg,
            const CPURegister& dst2 = NoReg, const CPURegister& dst3 = NoReg);
 
   // Alternative forms of Push and Pop, taking a RegList or CPURegList that
   // specifies the registers that are to be pushed or popped. Higher-numbered
   // registers are associated with higher memory addresses (as in the A32 push
   // and pop instructions).
   //
   // (Push|Pop)SizeRegList allow you to specify the register size as a
   // parameter. Only kXRegSizeInBits, kWRegSizeInBits, kDRegSizeInBits and
@@ skipping 233 matching lines @@
   // Push the system stack pointer (csp) down to allow the same to be done to
   // the current stack pointer (according to StackPointer()). This must be
   // called _before_ accessing the memory.
   //
   // This is necessary when pushing or otherwise adding things to the stack, to
   // satisfy the AAPCS64 constraint that the memory below the system stack
   // pointer is not accessed.
   //
   // This method asserts that StackPointer() is not csp, since the call does
   // not make sense in that context.
-  //
-  // TODO(jbramley): Currently, this method can only accept values of 'space'
-  // that can be encoded in one instruction. Refer to the implementation for
-  // details.
   inline void BumpSystemStackPointer(const Operand& space);
 
   // Helpers ------------------------------------------------------------------
   // Root register.
   inline void InitializeRootRegister();
 
   // Load an object from the root table.
   void LoadRoot(Register destination,
                 Heap::RootListIndex index);
   // Store an object to the root table.
@@ skipping 1481 matching lines @@
 #error "Unsupported option"
 #define CODE_COVERAGE_STRINGIFY(x) #x
 #define CODE_COVERAGE_TOSTRING(x) CODE_COVERAGE_STRINGIFY(x)
 #define __FILE_LINE__ __FILE__ ":" CODE_COVERAGE_TOSTRING(__LINE__)
 #define ACCESS_MASM(masm) masm->stop(__FILE_LINE__); masm->
 #else
 #define ACCESS_MASM(masm) masm->
 #endif
 
 #endif  // V8_A64_MACRO_ASSEMBLER_A64_H_