Replace NULL with nullptr

Also fixed some lines that were too long, and a few other minor
details.

Change-Id: I6efba5fb6e03eb5d0a300fddb2a75bf8e2f175cb
diff --git a/runtime/arch/mips/context_mips.h b/runtime/arch/mips/context_mips.h
index cbad3f963..d01b95e 100644
--- a/runtime/arch/mips/context_mips.h
+++ b/runtime/arch/mips/context_mips.h
@@ -79,7 +79,7 @@
   NO_RETURN void DoLongJump() OVERRIDE;
 
  private:
-  // Pointers to registers in the stack, initialized to NULL except for the special cases below.
+  // Pointers to registers in the stack, initialized to null except for the special cases below.
   uintptr_t* gprs_[kNumberOfCoreRegisters];
   uint32_t* fprs_[kNumberOfFRegisters];
   // Hold values for sp and ra (return address) if they are not located within a stack frame.
diff --git a/runtime/arch/mips/entrypoints_init_mips.cc b/runtime/arch/mips/entrypoints_init_mips.cc
index e3ec27c..a980a86 100644
--- a/runtime/arch/mips/entrypoints_init_mips.cc
+++ b/runtime/arch/mips/entrypoints_init_mips.cc
@@ -199,7 +199,7 @@
   static_assert(IsDirectEntrypoint(kQuickD2iz), "Direct C stub not marked direct.");
   qpoints->pF2iz = art_f2i;
   static_assert(IsDirectEntrypoint(kQuickF2iz), "Direct C stub not marked direct.");
-  qpoints->pIdivmod = NULL;
+  qpoints->pIdivmod = nullptr;
   qpoints->pD2l = art_d2l;
   static_assert(IsDirectEntrypoint(kQuickD2l), "Direct C stub not marked direct.");
   qpoints->pF2l = art_f2l;
@@ -228,19 +228,24 @@
   qpoints->pQuickImtConflictTrampoline = art_quick_imt_conflict_trampoline;
   qpoints->pQuickResolutionTrampoline = art_quick_resolution_trampoline;
   qpoints->pQuickToInterpreterBridge = art_quick_to_interpreter_bridge;
-  qpoints->pInvokeDirectTrampolineWithAccessCheck = art_quick_invoke_direct_trampoline_with_access_check;
+  qpoints->pInvokeDirectTrampolineWithAccessCheck =
+      art_quick_invoke_direct_trampoline_with_access_check;
   static_assert(!IsDirectEntrypoint(kQuickInvokeDirectTrampolineWithAccessCheck),
                 "Non-direct C stub marked direct.");
-  qpoints->pInvokeInterfaceTrampolineWithAccessCheck = art_quick_invoke_interface_trampoline_with_access_check;
+  qpoints->pInvokeInterfaceTrampolineWithAccessCheck =
+      art_quick_invoke_interface_trampoline_with_access_check;
   static_assert(!IsDirectEntrypoint(kQuickInvokeInterfaceTrampolineWithAccessCheck),
                 "Non-direct C stub marked direct.");
-  qpoints->pInvokeStaticTrampolineWithAccessCheck = art_quick_invoke_static_trampoline_with_access_check;
+  qpoints->pInvokeStaticTrampolineWithAccessCheck =
+      art_quick_invoke_static_trampoline_with_access_check;
   static_assert(!IsDirectEntrypoint(kQuickInvokeStaticTrampolineWithAccessCheck),
                 "Non-direct C stub marked direct.");
-  qpoints->pInvokeSuperTrampolineWithAccessCheck = art_quick_invoke_super_trampoline_with_access_check;
+  qpoints->pInvokeSuperTrampolineWithAccessCheck =
+      art_quick_invoke_super_trampoline_with_access_check;
   static_assert(!IsDirectEntrypoint(kQuickInvokeSuperTrampolineWithAccessCheck),
                 "Non-direct C stub marked direct.");
-  qpoints->pInvokeVirtualTrampolineWithAccessCheck = art_quick_invoke_virtual_trampoline_with_access_check;
+  qpoints->pInvokeVirtualTrampolineWithAccessCheck =
+      art_quick_invoke_virtual_trampoline_with_access_check;
   static_assert(!IsDirectEntrypoint(kQuickInvokeVirtualTrampolineWithAccessCheck),
                 "Non-direct C stub marked direct.");
 
diff --git a/runtime/arch/mips/quick_entrypoints_mips.S b/runtime/arch/mips/quick_entrypoints_mips.S
index 0c2250e..622c48f 100644
--- a/runtime/arch/mips/quick_entrypoints_mips.S
+++ b/runtime/arch/mips/quick_entrypoints_mips.S
@@ -446,7 +446,7 @@
      * The helper will attempt to locate the target and return a 64-bit result in $v0/$v1 consisting
      * of the target Method* in $v0 and method->code_ in $v1.
      *
-     * If unsuccessful, the helper will return NULL/NULL. There will be a pending exception in the
+     * If unsuccessful, the helper will return null/null. There will be a pending exception in the
      * thread and we branch to another stub to deliver it.
      *
      * On success this wrapper will restore arguments and *jump* to the target, leaving the lr
@@ -484,7 +484,7 @@
      * Invocation stub for quick code.
      * On entry:
      *   a0 = method pointer
-     *   a1 = argument array or NULL for no argument methods
+     *   a1 = argument array or null for no argument methods
      *   a2 = size of argument array in bytes
      *   a3 = (managed) thread pointer
      *   [sp + 16] = JValue* result
@@ -520,7 +520,7 @@
     lw    $a3, 12($sp)          # copy arg value for a3
     lw    $t9, MIRROR_ART_METHOD_QUICK_CODE_OFFSET_32($a0)  # get pointer to the code
     jalr  $t9                   # call the method
-    sw    $zero, 0($sp)         # store NULL for method* at bottom of frame
+    sw    $zero, 0($sp)         # store null for method* at bottom of frame
     move  $sp, $fp              # restore the stack
     lw    $s0, 0($sp)
     .cfi_restore 16