MIPS64: Fix LoadGlobalViaContextStub

src/mips64/macro-assembler-mips64.cc

 // Copyright 2012 the V8 project authors. All rights reserved.
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE file.
 
 #include <limits.h>  // For LONG_MIN, LONG_MAX.
 
 #include "src/v8.h"
 
 #if V8_TARGET_ARCH_MIPS64
 
@@ skipping 149 matching lines @@
                                 Register scratch,
                                 Condition cc,
                                 Label* branch) {
   DCHECK(cc == eq || cc == ne);
   And(scratch, object, Operand(ExternalReference::new_space_mask(isolate())));
   Branch(branch, cc, scratch,
          Operand(ExternalReference::new_space_start(isolate())));
 }
 
 
+// Clobbers object, dst, value, and ra, if (ra_status == kRAHasBeenSaved)
+// The register 'object' contains a heap object pointer.  The heap object
+// tag is shifted away.
 void MacroAssembler::RecordWriteField(
     Register object,
     int offset,
     Register value,
     Register dst,
     RAStatus ra_status,
     SaveFPRegsMode save_fp,
     RememberedSetAction remembered_set_action,
     SmiCheck smi_check,
     PointersToHereCheck pointers_to_here_check_for_value) {
@@ skipping 33 matching lines @@
 
   // Clobber clobbered input registers when running with the debug-code flag
   // turned on to provoke errors.
   if (emit_debug_code()) {
     li(value, Operand(bit_cast<int64_t>(kZapValue + 4)));
     li(dst, Operand(bit_cast<int64_t>(kZapValue + 8)));
   }
 }
 
 
-// Will clobber 4 registers: object, map, dst, ip.  The
-// register 'object' contains a heap object pointer.
+// Clobbers object, dst, map, and ra, if (ra_status == kRAHasBeenSaved)
 void MacroAssembler::RecordWriteForMap(Register object,
                                        Register map,
                                        Register dst,
                                        RAStatus ra_status,
                                        SaveFPRegsMode fp_mode) {
   if (emit_debug_code()) {
     DCHECK(!dst.is(at));
     ld(dst, FieldMemOperand(map, HeapObject::kMapOffset));
     Check(eq,
           kWrongAddressOrValuePassedToRecordWrite,
@@ skipping 53 matching lines @@
 
   // Clobber clobbered registers when running with the debug-code flag
   // turned on to provoke errors.
   if (emit_debug_code()) {
     li(dst, Operand(bit_cast<int64_t>(kZapValue + 12)));
     li(map, Operand(bit_cast<int64_t>(kZapValue + 16)));
   }
 }
 
 
-// Will clobber 4 registers: object, address, scratch, ip.  The
-// register 'object' contains a heap object pointer.  The heap object
+// Clobbers object, address, value, and ra, if (ra_status == kRAHasBeenSaved)
+// The register 'object' contains a heap object pointer.  The heap object
 // tag is shifted away.
 void MacroAssembler::RecordWrite(
     Register object,
     Register address,
     Register value,
     RAStatus ra_status,
     SaveFPRegsMode fp_mode,
     RememberedSetAction remembered_set_action,
     SmiCheck smi_check,
     PointersToHereCheck pointers_to_here_check_for_value) {
@@ skipping 6036 matching lines @@
   if (mag.shift > 0) sra(result, result, mag.shift);
   srl(at, dividend, 31);
   Addu(result, result, Operand(at));
 }
 
 
 }  // namespace internal
 }  // namespace v8
 
 #endif  // V8_TARGET_ARCH_MIPS64