Remove dead code for generated code coverage.

src/mips64/simulator-mips64.cc

 // Copyright 2011 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>
 #include <stdarg.h>
 #include <stdlib.h>
 #include <cmath>
 
 #if V8_TARGET_ARCH_MIPS64
@@ skipping 48 matching lines @@
 // SScanF not being implemented in a platform independent was through
 // ::v8::internal::OS in the same way as SNPrintF is that the Windows C Run-Time
 // Library does not provide vsscanf.
 #define SScanF sscanf  // NOLINT
 
 // The MipsDebugger class is used by the simulator while debugging simulated
 // code.
 class MipsDebugger {
  public:
   explicit MipsDebugger(Simulator* sim) : sim_(sim) { }
-  ~MipsDebugger();
 
   void Stop(Instruction* instr);
   void Debug();
   // Print all registers with a nice formatting.
   void PrintAllRegs();
   void PrintAllRegsIncludingFPU();
 
  private:
   // We set the breakpoint code to 0xfffff to easily recognize it.
   static const Instr kBreakpointInstr = SPECIAL | BREAK | 0xfffff << 6;
@@ skipping 10 matching lines @@
   // Set or delete a breakpoint. Returns true if successful.
   bool SetBreakpoint(Instruction* breakpc);
   bool DeleteBreakpoint(Instruction* breakpc);
 
   // Undo and redo all breakpoints. This is needed to bracket disassembly and
   // execution to skip past breakpoints when run from the debugger.
   void UndoBreakpoints();
   void RedoBreakpoints();
 };
 
-
-MipsDebugger::~MipsDebugger() {
-}
-
-
-#ifdef GENERATED_CODE_COVERAGE
-static FILE* coverage_log = NULL;
-
-
-static void InitializeCoverage() {
-  char* file_name = getenv("V8_GENERATED_CODE_COVERAGE_LOG");
-  if (file_name != NULL) {
-    coverage_log = fopen(file_name, "aw+");
-  }
-}
-
+#define UNSUPPORTED() printf("Sim: Unsupported instruction.\n");
 
 void MipsDebugger::Stop(Instruction* instr) {
   // Get the stop code.
   uint32_t code = instr->Bits(25, 6);
-  // Retrieve the encoded address, which comes just after this stop.
-  char** msg_address =
-    reinterpret_cast<char**>(sim_->get_pc() + Instr::kInstrSize);
-  char* msg = *msg_address;
-  DCHECK(msg != NULL);
-
-  // Update this stop description.
-  if (!watched_stops_[code].desc) {
-    watched_stops_[code].desc = msg;
-  }
-
-  if (strlen(msg) > 0) {
-    if (coverage_log != NULL) {
-      fprintf(coverage_log, "%s\n", str);
-      fflush(coverage_log);
-    }
-    // Overwrite the instruction and address with nops.
-    instr->SetInstructionBits(kNopInstr);
-    reinterpret_cast<Instr*>(msg_address)->SetInstructionBits(kNopInstr);
-  }
-  // TODO(yuyin): 2 -> 3?
-  sim_->set_pc(sim_->get_pc() + 3 * Instruction::kInstructionSize);
-}
-
-
-#else  // GENERATED_CODE_COVERAGE
-
-#define UNSUPPORTED() printf("Sim: Unsupported instruction.\n");
-
-static void InitializeCoverage() {}
-
-
-void MipsDebugger::Stop(Instruction* instr) {
-  // Get the stop code.
-  uint32_t code = instr->Bits(25, 6);
   // Retrieve the encoded address, which comes just after this stop.
   char* msg = *reinterpret_cast<char**>(sim_->get_pc() +
       Instruction::kInstrSize);
   // Update this stop description.
   if (!sim_->watched_stops_[code].desc) {
     sim_->watched_stops_[code].desc = msg;
   }
   PrintF("Simulator hit %s (%u)\n", msg, code);
   // TODO(yuyin): 2 -> 3?
   sim_->set_pc(sim_->get_pc() + 3 * Instruction::kInstrSize);
   Debug();
 }
-#endif  // GENERATED_CODE_COVERAGE
-
 
 int64_t MipsDebugger::GetRegisterValue(int regnum) {
   if (regnum == kNumSimuRegisters) {
     return sim_->get_pc();
   } else {
     return sim_->get_register(regnum);
   }
 }
 
 
@@ skipping 730 matching lines @@
   }
 
   // The sp is initialized to point to the bottom (high address) of the
   // allocated stack area. To be safe in potential stack underflows we leave
   // some buffer below.
   registers_[sp] = reinterpret_cast<int64_t>(stack_) + stack_size_ - 64;
   // The ra and pc are initialized to a known bad value that will cause an
   // access violation if the simulator ever tries to execute it.
   registers_[pc] = bad_ra;
   registers_[ra] = bad_ra;
-  InitializeCoverage();
 
   last_debugger_input_ = NULL;
 }
 
 
 Simulator::~Simulator() { free(stack_); }
 
 
 // When the generated code calls an external reference we need to catch that in
 // the simulator.  The external reference will be a function compiled for the
@@ skipping 4064 matching lines @@
 }
 
 
 #undef UNSUPPORTED
 }  // namespace internal
 }  // namespace v8
 
 #endif  // USE_SIMULATOR
 
 #endif  // V8_TARGET_ARCH_MIPS64