[mips] Mask ror immediates.

src/mips/macro-assembler-mips.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.
 
 #if V8_TARGET_ARCH_MIPS
 
 #include "src/base/bits.h"
@@ skipping 1060 matching lines @@
     }
   }
 }
 
 
 void MacroAssembler::Ror(Register rd, Register rs, const Operand& rt) {
   if (IsMipsArchVariant(kMips32r2) || IsMipsArchVariant(kMips32r6)) {
     if (rt.is_reg()) {
       rotrv(rd, rs, rt.rm());
     } else {
-      rotr(rd, rs, rt.imm32_);
+      rotr(rd, rs, rt.imm32_ & 0x1f);
     }
   } else {
     if (rt.is_reg()) {
       subu(at, zero_reg, rt.rm());
       sllv(at, rs, at);
       srlv(rd, rs, rt.rm());
       or_(rd, rd, at);
     } else {
       if (rt.imm32_ == 0) {
         srl(rd, rs, 0);
       } else {
-        srl(at, rs, rt.imm32_);
-        sll(rd, rs, (0x20 - rt.imm32_) & 0x1f);
+        srl(at, rs, rt.imm32_ & 0x1f);
+        sll(rd, rs, (0x20 - (rt.imm32_ & 0x1f)) & 0x1f);
         or_(rd, rd, at);
       }
     }
   }
 }
 
 
 void MacroAssembler::Pref(int32_t hint, const MemOperand& rs) {
   if (IsMipsArchVariant(kLoongson)) {
     lw(zero_reg, rs);
@@ skipping 4808 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_MIPS