arch-power: Stop "using namespace std"

Change-Id: Iab8acba7c01a873db660304bb85661e75ffbe854
Reviewed-on: https://gem5-review.googlesource.com/c/public/gem5/+/39556
Maintainer: Gabe Black <gabe.black@gmail.com>
Tested-by: kokoro <noreply+kokoro@google.com>
Reviewed-by: Daniel Carvalho <odanrc@yahoo.com.br>

src/arch/power/insts/integer.cc

@@ -28,19 +28,18 @@
 
 #include "arch/power/insts/integer.hh"
 
-using namespace std;
 using namespace PowerISA;
 
-string
+std::string
 IntOp::generateDisassembly(Addr pc, const Loader::SymbolTable *symtab) const
 {
-    stringstream ss;
+    std::stringstream ss;
     bool printDest = true;
     bool printSrcs = true;
     bool printSecondSrc = true;
 
     // Generate the correct mnemonic
-    string myMnemonic(mnemonic);
+    std::string myMnemonic(mnemonic);
 
     // Special cases
     if (!myMnemonic.compare("or") && srcRegIdx(0) == srcRegIdx(1)) {
@@ -78,13 +77,13 @@ IntOp::generateDisassembly(Addr pc, const Loader::SymbolTable *symtab) const
 }
 
 
-string
+std::string
 IntImmOp::generateDisassembly(Addr pc, const Loader::SymbolTable *symtab) const
 {
-    stringstream ss;
+    std::stringstream ss;
 
     // Generate the correct mnemonic
-    string myMnemonic(mnemonic);
+    std::string myMnemonic(mnemonic);
 
     // Special cases
     if (!myMnemonic.compare("addi") && _numSrcRegs == 0) {
@@ -114,11 +113,11 @@ IntImmOp::generateDisassembly(Addr pc, const Loader::SymbolTable *symtab) const
 }
 
 
-string
+std::string
 IntShiftOp::generateDisassembly(
         Addr pc, const Loader::SymbolTable *symtab) const
 {
-    stringstream ss;
+    std::stringstream ss;
 
     ccprintf(ss, "%-10s ", mnemonic);
 
@@ -142,11 +141,11 @@ IntShiftOp::generateDisassembly(
 }
 
 
-string
+std::string
 IntRotateOp::generateDisassembly(
         Addr pc, const Loader::SymbolTable *symtab) const
 {
-    stringstream ss;
+    std::stringstream ss;
 
     ccprintf(ss, "%-10s ", mnemonic);
 

src/arch/power/process.cc

@@ -43,7 +43,6 @@
 #include "sim/syscall_return.hh"
 #include "sim/system.hh"
 
-using namespace std;
 using namespace PowerISA;
 
 PowerProcess::PowerProcess(
@@ -67,9 +66,9 @@ PowerProcess::PowerProcess(
     // Set up region for mmaps. For now, start at bottom of kuseg space.
     Addr mmap_end = 0x70000000L;
 
-    memState = make_shared<MemState>(this, brk_point, stack_base,
-                                     max_stack_size, next_thread_stack_base,
-                                     mmap_end);
+    memState = std::make_shared<MemState>(
+            this, brk_point, stack_base, max_stack_size,
+            next_thread_stack_base, mmap_end);
 }
 
 void
@@ -85,7 +84,7 @@ PowerProcess::argsInit(int intSize, int pageSize)
 {
     std::vector<AuxVector<uint32_t>> auxv;
 
-    string filename;
+    std::string filename;
     if (argv.size() < 1)
         filename = "";
     else
@@ -146,7 +145,7 @@ PowerProcess::argsInit(int intSize, int pageSize)
     // A sentry NULL void pointer at the top of the stack.
     int sentry_size = intSize;
 
-    string platform = "v51";
+    std::string platform = "v51";
     int platform_size = platform.size() + 1;
 
     // The aux vectors are put on the stack in two groups. The first group are

src/arch/power/remote_gdb.cc

@@ -143,7 +143,6 @@
 #include "mem/page_table.hh"
 #include "sim/byteswap.hh"
 
-using namespace std;
 using namespace PowerISA;
 
 RemoteGDB::RemoteGDB(System *_system, ThreadContext *tc, int _port)

src/arch/power/tlb.cc

@@ -48,7 +48,6 @@
 #include "sim/full_system.hh"
 #include "sim/process.hh"
 
-using namespace std;
 using namespace PowerISA;
 
 ///////////////////////////////////////////////////////////////////////
@@ -168,7 +167,7 @@ TLB::insertAt(PowerISA::PTE &pte, unsigned Index, int _smallPages)
         table[Index]=pte;
 
         // Update fast lookup table
-        lookupTable.insert(make_pair(table[Index].VPN, Index));
+        lookupTable.insert(std::make_pair(table[Index].VPN, Index));
     }
 }
 
@@ -209,7 +208,7 @@ TLB::unserialize(CheckpointIn &cp)
     for (int i = 0; i < size; i++) {
         ScopedCheckpointSection sec(cp, csprintf("PTE%d", i));
         if (table[i].V0 || table[i].V1) {
-            lookupTable.insert(make_pair(table[i].VPN, i));
+            lookupTable.insert(std::make_pair(table[i].VPN, i));
         }
     }
 }