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      1 // Copyright 2013 the V8 project authors. All rights reserved.
      2 // Use of this source code is governed by a BSD-style license that can be
      3 // found in the LICENSE file.
      4 
      5 #if V8_TARGET_ARCH_ARM64
      6 
      7 #include "src/arm64/decoder-arm64.h"
      8 #include "src/globals.h"
      9 #include "src/utils.h"
     10 
     11 
     12 namespace v8 {
     13 namespace internal {
     14 
     15 
     16 void DispatchingDecoderVisitor::AppendVisitor(DecoderVisitor* new_visitor) {
     17   visitors_.remove(new_visitor);
     18   visitors_.push_back(new_visitor);
     19 }
     20 
     21 
     22 void DispatchingDecoderVisitor::PrependVisitor(DecoderVisitor* new_visitor) {
     23   visitors_.remove(new_visitor);
     24   visitors_.push_front(new_visitor);
     25 }
     26 
     27 
     28 void DispatchingDecoderVisitor::InsertVisitorBefore(
     29     DecoderVisitor* new_visitor, DecoderVisitor* registered_visitor) {
     30   visitors_.remove(new_visitor);
     31   std::list<DecoderVisitor*>::iterator it;
     32   for (it = visitors_.begin(); it != visitors_.end(); it++) {
     33     if (*it == registered_visitor) {
     34       visitors_.insert(it, new_visitor);
     35       return;
     36     }
     37   }
     38   // We reached the end of the list. The last element must be
     39   // registered_visitor.
     40   DCHECK(*it == registered_visitor);
     41   visitors_.insert(it, new_visitor);
     42 }
     43 
     44 
     45 void DispatchingDecoderVisitor::InsertVisitorAfter(
     46     DecoderVisitor* new_visitor, DecoderVisitor* registered_visitor) {
     47   visitors_.remove(new_visitor);
     48   std::list<DecoderVisitor*>::iterator it;
     49   for (it = visitors_.begin(); it != visitors_.end(); it++) {
     50     if (*it == registered_visitor) {
     51       it++;
     52       visitors_.insert(it, new_visitor);
     53       return;
     54     }
     55   }
     56   // We reached the end of the list. The last element must be
     57   // registered_visitor.
     58   DCHECK(*it == registered_visitor);
     59   visitors_.push_back(new_visitor);
     60 }
     61 
     62 
     63 void DispatchingDecoderVisitor::RemoveVisitor(DecoderVisitor* visitor) {
     64   visitors_.remove(visitor);
     65 }
     66 
     67 
     68 #define DEFINE_VISITOR_CALLERS(A)                                \
     69   void DispatchingDecoderVisitor::Visit##A(Instruction* instr) { \
     70     if (!(instr->Mask(A##FMask) == A##Fixed)) {                  \
     71       DCHECK(instr->Mask(A##FMask) == A##Fixed);                 \
     72     }                                                            \
     73     std::list<DecoderVisitor*>::iterator it;                     \
     74     for (it = visitors_.begin(); it != visitors_.end(); it++) {  \
     75       (*it)->Visit##A(instr);                                    \
     76     }                                                            \
     77   }
     78 VISITOR_LIST(DEFINE_VISITOR_CALLERS)
     79 #undef DEFINE_VISITOR_CALLERS
     80 
     81 
     82 }  // namespace internal
     83 }  // namespace v8
     84 
     85 #endif  // V8_TARGET_ARCH_ARM64
     86