Merge "Fix up TODO: c++0x, update cpplint." into dalvik-dev
diff --git a/build/Android.common.mk b/build/Android.common.mk
index 786b1de..ac1be1e 100644
--- a/build/Android.common.mk
+++ b/build/Android.common.mk
@@ -109,7 +109,6 @@
 
 art_cflags := \
 	-fno-rtti \
-	-O2 \
 	-std=gnu++11 \
 	-ggdb3 \
 	-Wall \
@@ -131,8 +130,11 @@
 	-Wframe-larger-than=1728
 endif
 
+art_non_debug_cflags := \
+        -O3
+
 art_debug_cflags := \
-	-fno-inline \
+	-O1 \
 	-DDYNAMIC_ANNOTATIONS_ENABLED=1 \
 	-UNDEBUG
 
diff --git a/compiler/driver/compiler_driver.cc b/compiler/driver/compiler_driver.cc
index 0ef0428..4266df7 100644
--- a/compiler/driver/compiler_driver.cc
+++ b/compiler/driver/compiler_driver.cc
@@ -2227,13 +2227,18 @@
   } else if ((access_flags & kAccAbstract) != 0) {
   } else {
     bool compile = verifier::MethodVerifier::IsCandidateForCompilation(code_item, access_flags);
+#ifdef ART_SEA_IR_MODE
+    bool use_sea = Runtime::Current()->IsSeaIRMode();
+    use_sea = use_sea && (std::string::npos != PrettyMethod(method_idx, dex_file).find("fibonacci"));
+    if (use_sea) compile = true;
+#endif
+
     if (compile) {
       CompilerFn compiler = compiler_;
 #ifdef ART_SEA_IR_MODE
-      bool use_sea = Runtime::Current()->IsSeaIRMode();
-      use_sea = use_sea && (std::string::npos != PrettyMethod(method_idx, dex_file).find("fibonacci"));
       if (use_sea) {
         compiler = sea_ir_compiler_;
+        LOG(INFO) << "Using SEA IR to compile..." << std::endl;
       }
 #endif
       // NOTE: if compiler declines to compile this method, it will return NULL.
diff --git a/compiler/jni/portable/jni_compiler.cc b/compiler/jni/portable/jni_compiler.cc
index 58ee1c1..fc2e4e2 100644
--- a/compiler/jni/portable/jni_compiler.cc
+++ b/compiler/jni/portable/jni_compiler.cc
@@ -60,7 +60,6 @@
   CHECK(dex_compilation_unit->IsNative());
 }
 
-
 CompiledMethod* JniCompiler::Compile() {
   const bool is_static = dex_compilation_unit_->IsStatic();
   const bool is_synchronized = dex_compilation_unit_->IsSynchronized();
@@ -230,10 +229,21 @@
   irb_.Runtime().EmitPopShadowFrame(old_shadow_frame);
 
   // Return!
-  if (return_shorty != 'V') {
-    irb_.CreateRet(retval);
-  } else {
-    irb_.CreateRetVoid();
+  switch (return_shorty) {
+    case 'V':
+      irb_.CreateRetVoid();
+      break;
+    case 'Z':
+    case 'C':
+      irb_.CreateRet(irb_.CreateZExt(retval, irb_.getInt32Ty()));
+      break;
+    case 'B':
+    case 'S':
+      irb_.CreateRet(irb_.CreateSExt(retval, irb_.getInt32Ty()));
+      break;
+    default:
+      irb_.CreateRet(retval);
+      break;
   }
 
   // Verify the generated bitcode
@@ -276,8 +286,20 @@
   CHECK_GE(shorty_size, 1u);
 
   // Get return type
-  ::llvm::Type* ret_type = irb_.getJType(shorty[0]);
-
+  ::llvm::Type* ret_type = NULL;
+  switch (shorty[0]) {
+    case 'V': ret_type =  irb_.getJVoidTy(); break;
+    case 'Z':
+    case 'B':
+    case 'C':
+    case 'S':
+    case 'I': ret_type =  irb_.getJIntTy(); break;
+    case 'F': ret_type =  irb_.getJFloatTy(); break;
+    case 'J': ret_type =  irb_.getJLongTy(); break;
+    case 'D': ret_type =  irb_.getJDoubleTy(); break;
+    case 'L': ret_type =  irb_.getJObjectTy(); break;
+    default: LOG(FATAL)  << "Unreachable: unexpected return type in shorty " << shorty;
+  }
   // Get argument type
   std::vector< ::llvm::Type*> args_type;
 
diff --git a/compiler/sea_ir/debug/dot_gen.h b/compiler/sea_ir/debug/dot_gen.h
index 5270582..05d97fa 100644
--- a/compiler/sea_ir/debug/dot_gen.h
+++ b/compiler/sea_ir/debug/dot_gen.h
@@ -20,6 +20,7 @@
 #include "safe_map.h"
 #include "base/stringprintf.h"
 #include "file_output_stream.h"
+#include "os.h"
 #include "sea_ir/ir/sea.h"
 #include "sea_ir/types/type_inference.h"
 
@@ -103,7 +104,7 @@
     LOG(INFO) << "Starting to write SEA string to file.";
     DotGenerationVisitor dgv = DotGenerationVisitor(&options_, types);
     graph->Accept(&dgv);
-    art::File* file = art::OS::OpenFile(filename.c_str(), O_RDWR | O_CREAT | O_TRUNC);
+    art::File* file = art::OS::OpenFileReadWrite(filename.c_str());
     art::FileOutputStream fos(file);
     std::string graph_as_string = dgv.GetResult();
     graph_as_string += "}";
diff --git a/compiler/sea_ir/frontend.cc b/compiler/sea_ir/frontend.cc
index e24d07d..421c3a4 100644
--- a/compiler/sea_ir/frontend.cc
+++ b/compiler/sea_ir/frontend.cc
@@ -16,18 +16,26 @@
 
 #ifdef ART_SEA_IR_MODE
 #include <llvm/Support/Threading.h>
+#include <llvm/Support/raw_ostream.h>
+#include <llvm/Bitcode/ReaderWriter.h>
+
 #include "base/logging.h"
+#include "llvm/llvm_compilation_unit.h"
 #include "dex/portable/mir_to_gbc.h"
 #include "driver/compiler_driver.h"
-#include "leb128.h"
-#include "llvm/llvm_compilation_unit.h"
+#include "verifier/method_verifier.h"
 #include "mirror/object.h"
+#include "utils.h"
+
 #include "runtime.h"
 #include "safe_map.h"
 
 #include "sea_ir/ir/sea.h"
 #include "sea_ir/debug/dot_gen.h"
 #include "sea_ir/types/types.h"
+#include "sea_ir/code_gen/code_gen.h"
+
+
 namespace art {
 
 static CompiledMethod* CompileMethodWithSeaIr(CompilerDriver& compiler,
@@ -44,12 +52,31 @@
   //       and silencing the cpplint.py warning, I just corrected the formatting.
   VLOG(compiler) << "Compiling " << PrettyMethod(method_idx, dex_file) << "...";
   sea_ir::SeaGraph* ir_graph = sea_ir::SeaGraph::GetGraph(dex_file);
-  ir_graph->CompileMethod(code_item, class_def_idx, method_idx, method_access_flags, dex_file);
+  sea_ir::CodeGenData* llvm_data =
+      ir_graph->CompileMethod(code_item, class_def_idx, method_idx, method_access_flags, dex_file);
   sea_ir::DotConversion dc;
   SafeMap<int, const sea_ir::Type*>*  types = ir_graph->ti_->GetTypeMap();
   dc.DumpSea(ir_graph, "/tmp/temp.dot", types);
   CHECK(0 && "No SEA compiled function exists yet.");
-  return NULL;
+
+  MethodReference mref(&dex_file, method_idx);
+
+  // TODO: Passing the LLVM code as string is ugly and inefficient,
+  //       but it is the way portable did it. I kept it for compatibility,
+  //       but actually it should not happen.
+  std::string llvm_code;
+  ::llvm::raw_string_ostream str_os(llvm_code);
+  ::llvm::WriteBitcodeToFile(&llvm_data->module_, str_os);
+
+  std::string symbol = "dex_";
+  symbol += MangleForJni(PrettyMethod(method_idx, dex_file));
+
+  CompiledMethod* compiled_method =  new CompiledMethod(
+                              compiler.GetInstructionSet(),
+                              llvm_code,
+                              *verifier::MethodVerifier::GetDexGcMap(mref),
+                              symbol);
+  return compiled_method;
 }
 
 CompiledMethod* SeaIrCompileOneMethod(CompilerDriver& compiler,
diff --git a/compiler/sea_ir/ir/sea.cc b/compiler/sea_ir/ir/sea.cc
index 08fe0e1..902839d 100644
--- a/compiler/sea_ir/ir/sea.cc
+++ b/compiler/sea_ir/ir/sea.cc
@@ -386,7 +386,7 @@
   scoped_table->CloseScope();
 }
 
-void SeaGraph::GenerateLLVM() {
+CodeGenData* SeaGraph::GenerateLLVM() {
   // Pass: Generate LLVM IR.
   CodeGenPrepassVisitor code_gen_prepass_visitor;
   std::cout << "Generating code..." << std::endl;
@@ -399,9 +399,11 @@
   CodeGenPostpassVisitor code_gen_postpass_visitor(code_gen_visitor.GetData());
   Accept(&code_gen_postpass_visitor);
   code_gen_postpass_visitor.Write(std::string("my_file.llvm"));
+  return code_gen_postpass_visitor.GetData();
 }
 
-void SeaGraph::CompileMethod(const art::DexFile::CodeItem* code_item, uint32_t class_def_idx,
+CodeGenData* SeaGraph::CompileMethod(
+    const art::DexFile::CodeItem* code_item, uint32_t class_def_idx,
     uint32_t method_idx, uint32_t method_access_flags, const art::DexFile& dex_file) {
   // Two passes: Builds the intermediate structure (non-SSA) of the sea-ir for the function.
   BuildMethodSeaGraph(code_item, dex_file, class_def_idx, method_idx, method_access_flags);
@@ -420,7 +422,8 @@
   // Pass: type inference
   ti_->ComputeTypes(this);
   // Pass: Generate LLVM IR.
-  GenerateLLVM();
+  CodeGenData* cgd = GenerateLLVM();
+  return cgd;
 }
 
 void SeaGraph::ComputeDominanceFrontier() {
diff --git a/compiler/sea_ir/ir/sea.h b/compiler/sea_ir/ir/sea.h
index 0b20ed7..df420ed 100644
--- a/compiler/sea_ir/ir/sea.h
+++ b/compiler/sea_ir/ir/sea.h
@@ -37,6 +37,7 @@
 };
 
 class TypeInference;
+class CodeGenData;
 
 class Region;
 class InstructionNode;
@@ -260,7 +261,7 @@
  public:
   static SeaGraph* GetGraph(const art::DexFile&);
 
-  void CompileMethod(const art::DexFile::CodeItem* code_item, uint32_t class_def_idx,
+  CodeGenData* CompileMethod(const art::DexFile::CodeItem* code_item, uint32_t class_def_idx,
       uint32_t method_idx, uint32_t method_access_flags, const art::DexFile& dex_file);
   // Returns all regions corresponding to this SeaGraph.
   std::vector<Region*>* GetRegions() {
@@ -337,7 +338,7 @@
   void RenameAsSSA(Region* node, utils::ScopedHashtable<int, InstructionNode*>* scoped_table);
   // Generate LLVM IR for the method.
   // Precondition: ConvertToSSA().
-  void GenerateLLVM();
+  CodeGenData* GenerateLLVM();
 
   static SeaGraph graph_;
   std::vector<Region*> regions_;
diff --git a/runtime/arch/arm/portable_entrypoints_arm.S b/runtime/arch/arm/portable_entrypoints_arm.S
index f21ae28..073efdc 100644
--- a/runtime/arch/arm/portable_entrypoints_arm.S
+++ b/runtime/arch/arm/portable_entrypoints_arm.S
@@ -114,7 +114,7 @@
     .cfi_rel_offset r10, 28
     .cfi_rel_offset r11, 32
     .cfi_rel_offset lr, 36
-    sub sp, #8                        @ 2 words of space, bottom word will hold Method*
+    sub sp, #8                     @ 2 words of space, bottom word will hold Method*
     .pad #8
     .cfi_adjust_cfa_offset 8
     mov     r2, r9                 @ pass Thread::Current
@@ -156,7 +156,7 @@
     .cfi_rel_offset r10, 28
     .cfi_rel_offset r11, 32
     .cfi_rel_offset lr, 36
-    sub sp, #8                        @ 2 words of space, bottom word will hold Method*
+    sub sp, #8                     @ 2 words of space, bottom word will hold Method*
     .pad #8
     .cfi_adjust_cfa_offset 8
     mov     r1, r9                 @ pass Thread::Current
diff --git a/runtime/arch/x86/portable_entrypoints_x86.S b/runtime/arch/x86/portable_entrypoints_x86.S
index 0313d4b..a0cacd0 100644
--- a/runtime/arch/x86/portable_entrypoints_x86.S
+++ b/runtime/arch/x86/portable_entrypoints_x86.S
@@ -66,29 +66,63 @@
 END_FUNCTION art_portable_invoke_stub
 
 DEFINE_FUNCTION art_portable_proxy_invoke_handler
-    // Fake callee save ref and args frame set up, note portable doesn't use callee save frames.
-    // TODO: just save the registers that are needed in artPortableProxyInvokeHandler.
-    PUSH edi  // Save callee saves
-    PUSH esi
-    PUSH ebp
-    PUSH ebx  // Save args
-    PUSH edx
-    PUSH ecx
-    PUSH eax   // Align stack, eax will be clobbered by Method*
-    // Begin argument set up.
-    PUSH esp                      // pass SP
-    pushl %fs:THREAD_SELF_OFFSET  // pass Thread::Current()
-    .cfi_adjust_cfa_offset 4
-    PUSH ecx                      // pass receiver
-    PUSH eax                      // pass proxy method
-    call SYMBOL(artPortableProxyInvokeHandler) // (proxy method, receiver, Thread*, SP)
-    movd %eax, %xmm0              // place return value also into floating point return value
+    PUSH ebp                        // Set up frame.
+    movl %esp, %ebp
+    .cfi_def_cfa_register %ebp
+    subl LITERAL(8), %esp           // Align stack
+    leal 8(%ebp), %edx              // %edx = ArtMethod** called_addr
+    movl 12(%ebp), %ecx             // %ecx = receiver
+    movl 0(%edx), %eax              // %eax = ArtMethod* called
+    pushl %edx                      // Pass called_addr.
+    pushl %fs:THREAD_SELF_OFFSET    // Pass thread.
+    pushl %ecx                      // Pass receiver.
+    pushl %eax                      // Pass called.
+    call SYMBOL(artPortableProxyInvokeHandler)  // (called, receiver, Thread*, &called)
+    leave
+    .cfi_restore %ebp
+    .cfi_def_cfa %esp, 4
+    movd %eax, %xmm0              // Place return value also into floating point return value.
     movd %edx, %xmm1
     punpckldq %xmm1, %xmm0
-    addl LITERAL(44), %esp        // pop arguments
-    .cfi_adjust_cfa_offset -44
     ret
 END_FUNCTION art_portable_proxy_invoke_handler
 
-UNIMPLEMENTED art_portable_resolution_trampoline
-UNIMPLEMENTED art_portable_to_interpreter_bridge
+DEFINE_FUNCTION art_portable_resolution_trampoline
+  PUSH ebp                        // Set up frame.
+  movl %esp, %ebp
+  .cfi_def_cfa_register %ebp
+  subl LITERAL(8), %esp           // Align stack
+  leal 8(%ebp), %edx              // %edx = ArtMethod** called_addr
+  movl 12(%ebp), %ecx             // %ecx = receiver
+  movl 0(%edx), %eax              // %eax = ArtMethod* called
+  pushl %edx                      // Pass called_addr.
+  pushl %fs:THREAD_SELF_OFFSET    // Pass thread.
+  pushl %ecx                      // Pass receiver.
+  pushl %eax                      // Pass called.
+  call SYMBOL(artPortableResolutionTrampoline)  // (called, receiver, Thread*, &called)
+  leave
+  .cfi_restore %ebp
+  .cfi_def_cfa %esp, 4
+  testl %eax, %eax
+  jz  resolve_fail
+  jmp * %eax
+resolve_fail:                     // Resolution failed, return with exception pending.
+  ret
+END_FUNCTION art_portable_resolution_trampoline
+
+DEFINE_FUNCTION art_portable_to_interpreter_bridge
+  PUSH ebp                        // Set up frame.
+  movl %esp, %ebp
+  .cfi_def_cfa_register %ebp
+  subl LITERAL(12), %esp          // Align stack
+  leal 8(%ebp), %edx              // %edx = ArtMethod** called_addr
+  movl 0(%edx), %eax              // %eax = ArtMethod* called
+  pushl %edx                      // Pass called_addr.
+  pushl %fs:THREAD_SELF_OFFSET    // Pass thread.
+  pushl %eax                      // Pass called.
+  call SYMBOL(artPortableToInterpreterBridge)  // (called, Thread*, &called)
+  leave
+  .cfi_restore %ebp
+  .cfi_def_cfa %esp, 4
+  ret
+END_FUNCTION art_quick_to_interpreter_bridge
diff --git a/runtime/entrypoints/entrypoint_utils.cc b/runtime/entrypoints/entrypoint_utils.cc
index bf0fffa..52f8c81 100644
--- a/runtime/entrypoints/entrypoint_utils.cc
+++ b/runtime/entrypoints/entrypoint_utils.cc
@@ -23,6 +23,7 @@
 #include "mirror/art_method-inl.h"
 #include "mirror/class-inl.h"
 #include "mirror/object-inl.h"
+#include "object_utils.h"
 #include "mirror/object_array-inl.h"
 #include "mirror/proxy.h"
 #include "reflection.h"
diff --git a/runtime/entrypoints/entrypoint_utils.h b/runtime/entrypoints/entrypoint_utils.h
index 2b73af4..8b58cb3 100644
--- a/runtime/entrypoints/entrypoint_utils.h
+++ b/runtime/entrypoints/entrypoint_utils.h
@@ -16,7 +16,7 @@
 
 #ifndef ART_RUNTIME_ENTRYPOINTS_ENTRYPOINT_UTILS_H_
 #define ART_RUNTIME_ENTRYPOINTS_ENTRYPOINT_UTILS_H_
-
+#include "object_utils.h"
 #include "class_linker.h"
 #include "common_throws.h"
 #include "dex_file.h"
@@ -27,7 +27,7 @@
 #include "mirror/array.h"
 #include "mirror/class-inl.h"
 #include "mirror/throwable.h"
-#include "object_utils.h"
+
 #include "thread.h"
 
 namespace art {
diff --git a/runtime/entrypoints/portable/portable_trampoline_entrypoints.cc b/runtime/entrypoints/portable/portable_trampoline_entrypoints.cc
index e1ce11a..61f7440 100644
--- a/runtime/entrypoints/portable/portable_trampoline_entrypoints.cc
+++ b/runtime/entrypoints/portable/portable_trampoline_entrypoints.cc
@@ -42,8 +42,10 @@
 #define PORTABLE_CALLEE_SAVE_FRAME__REF_AND_ARGS__FRAME_SIZE 64
 #define PORTABLE_STACK_ARG_SKIP 16
 #elif defined(__i386__)
-#define PORTABLE_CALLEE_SAVE_FRAME__REF_AND_ARGS__R1_OFFSET 4
-#define PORTABLE_CALLEE_SAVE_FRAME__REF_AND_ARGS__FRAME_SIZE 32
+// For x86 there are no register arguments and the stack pointer will point directly to the called
+// method argument passed by the caller.
+#define PORTABLE_CALLEE_SAVE_FRAME__REF_AND_ARGS__R1_OFFSET 0
+#define PORTABLE_CALLEE_SAVE_FRAME__REF_AND_ARGS__FRAME_SIZE 0
 #define PORTABLE_STACK_ARG_SKIP 4
 #else
 #error "Unsupported architecture"
diff --git a/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc b/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
index 392bcc5..535d540 100644
--- a/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
+++ b/runtime/entrypoints/quick/quick_trampoline_entrypoints.cc
@@ -15,8 +15,10 @@
  */
 
 #include "callee_save_frame.h"
+#include "common_throws.h"
 #include "dex_file-inl.h"
 #include "dex_instruction-inl.h"
+#include "entrypoints/entrypoint_utils.h"
 #include "interpreter/interpreter.h"
 #include "invoke_arg_array_builder.h"
 #include "mirror/art_method-inl.h"
@@ -26,6 +28,8 @@
 #include "object_utils.h"
 #include "runtime.h"
 
+
+
 namespace art {
 
 // Visits the arguments as saved to the stack by a Runtime::kRefAndArgs callee save frame.
@@ -218,10 +222,11 @@
 };
 
 // Visits arguments on the stack placing them into the shadow frame.
-class BuildShadowFrameVisitor : public QuickArgumentVisitor {
+class BuildQuickShadowFrameVisitor : public QuickArgumentVisitor {
  public:
-  BuildShadowFrameVisitor(mirror::ArtMethod** sp, bool is_static, const char* shorty,
-                          uint32_t shorty_len, ShadowFrame& sf, size_t first_arg_reg) :
+  BuildQuickShadowFrameVisitor(mirror::ArtMethod** sp,
+      bool is_static, const char* shorty,
+       uint32_t shorty_len, ShadowFrame& sf, size_t first_arg_reg) :
     QuickArgumentVisitor(sp, is_static, shorty, shorty_len), sf_(sf), cur_reg_(first_arg_reg) {}
 
   virtual void Visit() SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
@@ -258,7 +263,7 @@
   ShadowFrame& sf_;
   size_t cur_reg_;
 
-  DISALLOW_COPY_AND_ASSIGN(BuildShadowFrameVisitor);
+  DISALLOW_COPY_AND_ASSIGN(BuildQuickShadowFrameVisitor);
 };
 
 extern "C" uint64_t artQuickToInterpreterBridge(mirror::ArtMethod* method, Thread* self,
@@ -280,7 +285,7 @@
     ShadowFrame* shadow_frame(ShadowFrame::Create(num_regs, NULL,  // No last shadow coming from quick.
                                                   method, 0, memory));
     size_t first_arg_reg = code_item->registers_size_ - code_item->ins_size_;
-    BuildShadowFrameVisitor shadow_frame_builder(sp, mh.IsStatic(), mh.GetShorty(),
+    BuildQuickShadowFrameVisitor shadow_frame_builder(sp, mh.IsStatic(), mh.GetShorty(),
                                                  mh.GetShortyLength(),
                                                  *shadow_frame, first_arg_reg);
     shadow_frame_builder.VisitArguments();
diff --git a/runtime/jni_internal.cc b/runtime/jni_internal.cc
index 460e3b0..55c0765 100644
--- a/runtime/jni_internal.cc
+++ b/runtime/jni_internal.cc
@@ -606,6 +606,11 @@
   return result;
 }
 
+#define CHECK_NON_NULL_ARGUMENT(fn, value) \
+  if (UNLIKELY(value == NULL)) { \
+    JniAbortF(#fn, #value " == null"); \
+  }
+
 class JNI {
  public:
   static jint GetVersion(JNIEnv*) {
@@ -618,6 +623,7 @@
   }
 
   static jclass FindClass(JNIEnv* env, const char* name) {
+    CHECK_NON_NULL_ARGUMENT(FindClass, name);
     Runtime* runtime = Runtime::Current();
     ClassLinker* class_linker = runtime->GetClassLinker();
     std::string descriptor(NormalizeJniClassDescriptor(name));
@@ -633,6 +639,7 @@
   }
 
   static jmethodID FromReflectedMethod(JNIEnv* env, jobject java_method) {
+    CHECK_NON_NULL_ARGUMENT(FromReflectedMethod, java_method);
     ScopedObjectAccess soa(env);
     jobject art_method = env->GetObjectField(java_method,
                                              WellKnownClasses::java_lang_reflect_AbstractMethod_artMethod);
@@ -642,6 +649,7 @@
   }
 
   static jfieldID FromReflectedField(JNIEnv* env, jobject java_field) {
+    CHECK_NON_NULL_ARGUMENT(FromReflectedField, java_field);
     ScopedObjectAccess soa(env);
     jobject art_field = env->GetObjectField(java_field,
                                             WellKnownClasses::java_lang_reflect_Field_artField);
@@ -651,6 +659,7 @@
   }
 
   static jobject ToReflectedMethod(JNIEnv* env, jclass, jmethodID mid, jboolean) {
+    CHECK_NON_NULL_ARGUMENT(ToReflectedMethod, mid);
     ScopedObjectAccess soa(env);
     ArtMethod* m = soa.DecodeMethod(mid);
     jobject art_method = soa.AddLocalReference<jobject>(m);
@@ -666,6 +675,7 @@
   }
 
   static jobject ToReflectedField(JNIEnv* env, jclass, jfieldID fid, jboolean) {
+    CHECK_NON_NULL_ARGUMENT(ToReflectedField, fid);
     ScopedObjectAccess soa(env);
     ArtField* f = soa.DecodeField(fid);
     jobject art_field = soa.AddLocalReference<jobject>(f);
@@ -681,18 +691,22 @@
   }
 
   static jclass GetObjectClass(JNIEnv* env, jobject java_object) {
+    CHECK_NON_NULL_ARGUMENT(GetObjectClass, java_object);
     ScopedObjectAccess soa(env);
     Object* o = soa.Decode<Object*>(java_object);
     return soa.AddLocalReference<jclass>(o->GetClass());
   }
 
   static jclass GetSuperclass(JNIEnv* env, jclass java_class) {
+    CHECK_NON_NULL_ARGUMENT(GetSuperclass, java_class);
     ScopedObjectAccess soa(env);
     Class* c = soa.Decode<Class*>(java_class);
     return soa.AddLocalReference<jclass>(c->GetSuperClass());
   }
 
   static jboolean IsAssignableFrom(JNIEnv* env, jclass java_class1, jclass java_class2) {
+    CHECK_NON_NULL_ARGUMENT(IsAssignableFrom, java_class1);
+    CHECK_NON_NULL_ARGUMENT(IsAssignableFrom, java_class2);
     ScopedObjectAccess soa(env);
     Class* c1 = soa.Decode<Class*>(java_class1);
     Class* c2 = soa.Decode<Class*>(java_class2);
@@ -700,9 +714,7 @@
   }
 
   static jboolean IsInstanceOf(JNIEnv* env, jobject jobj, jclass java_class) {
-    if (java_class == NULL) {
-      JniAbortF("IsInstanceOf", "null class (second argument)");
-    }
+    CHECK_NON_NULL_ARGUMENT(IsInstanceOf, java_class);
     if (jobj == NULL) {
       // Note: JNI is different from regular Java instanceof in this respect
       return JNI_TRUE;
@@ -726,6 +738,7 @@
   }
 
   static jint ThrowNew(JNIEnv* env, jclass c, const char* msg) {
+    CHECK_NON_NULL_ARGUMENT(ThrowNew, c);
     return ThrowNewException(env, c, msg, NULL);
   }
 
@@ -886,6 +899,7 @@
   }
 
   static jobject AllocObject(JNIEnv* env, jclass java_class) {
+    CHECK_NON_NULL_ARGUMENT(AllocObject, java_class);
     ScopedObjectAccess soa(env);
     Class* c = soa.Decode<Class*>(java_class);
     if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(c, true, true)) {
@@ -894,15 +908,19 @@
     return soa.AddLocalReference<jobject>(c->AllocObject(soa.Self()));
   }
 
-  static jobject NewObject(JNIEnv* env, jclass c, jmethodID mid, ...) {
+  static jobject NewObject(JNIEnv* env, jclass java_class, jmethodID mid, ...) {
     va_list args;
     va_start(args, mid);
-    jobject result = NewObjectV(env, c, mid, args);
+    CHECK_NON_NULL_ARGUMENT(NewObject, java_class);
+    CHECK_NON_NULL_ARGUMENT(NewObject, mid);
+    jobject result = NewObjectV(env, java_class, mid, args);
     va_end(args);
     return result;
   }
 
   static jobject NewObjectV(JNIEnv* env, jclass java_class, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(NewObjectV, java_class);
+    CHECK_NON_NULL_ARGUMENT(NewObjectV, mid);
     ScopedObjectAccess soa(env);
     Class* c = soa.Decode<Class*>(java_class);
     if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(c, true, true)) {
@@ -922,6 +940,8 @@
   }
 
   static jobject NewObjectA(JNIEnv* env, jclass java_class, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(NewObjectA, java_class);
+    CHECK_NON_NULL_ARGUMENT(NewObjectA, mid);
     ScopedObjectAccess soa(env);
     Class* c = soa.Decode<Class*>(java_class);
     if (!Runtime::Current()->GetClassLinker()->EnsureInitialized(c, true, true)) {
@@ -940,19 +960,28 @@
     }
   }
 
-  static jmethodID GetMethodID(JNIEnv* env, jclass c, const char* name, const char* sig) {
+  static jmethodID GetMethodID(JNIEnv* env, jclass java_class, const char* name, const char* sig) {
+    CHECK_NON_NULL_ARGUMENT(GetMethodID, java_class);
+    CHECK_NON_NULL_ARGUMENT(GetMethodID, name);
+    CHECK_NON_NULL_ARGUMENT(GetMethodID, sig);
     ScopedObjectAccess soa(env);
-    return FindMethodID(soa, c, name, sig, false);
+    return FindMethodID(soa, java_class, name, sig, false);
   }
 
-  static jmethodID GetStaticMethodID(JNIEnv* env, jclass c, const char* name, const char* sig) {
+  static jmethodID GetStaticMethodID(JNIEnv* env, jclass java_class, const char* name,
+                                     const char* sig) {
+    CHECK_NON_NULL_ARGUMENT(GetStaticMethodID, java_class);
+    CHECK_NON_NULL_ARGUMENT(GetStaticMethodID, name);
+    CHECK_NON_NULL_ARGUMENT(GetStaticMethodID, sig);
     ScopedObjectAccess soa(env);
-    return FindMethodID(soa, c, name, sig, true);
+    return FindMethodID(soa, java_class, name, sig, true);
   }
 
   static jobject CallObjectMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallObjectMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallObjectMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
@@ -960,12 +989,16 @@
   }
 
   static jobject CallObjectMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallObjectMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallObjectMethodV, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args));
     return soa.AddLocalReference<jobject>(result.GetL());
   }
 
   static jobject CallObjectMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallObjectMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallObjectMethodA, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args));
     return soa.AddLocalReference<jobject>(result.GetL());
@@ -974,6 +1007,8 @@
   static jboolean CallBooleanMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallBooleanMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallBooleanMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
@@ -981,30 +1016,40 @@
   }
 
   static jboolean CallBooleanMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallBooleanMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallBooleanMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetZ();
   }
 
   static jboolean CallBooleanMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallBooleanMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallBooleanMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetZ();
   }
 
   static jbyte CallByteMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
-    ScopedObjectAccess soa(env);
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallByteMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallByteMethod, mid);
+    ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
     return result.GetB();
   }
 
   static jbyte CallByteMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallByteMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallByteMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetB();
   }
 
   static jbyte CallByteMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallByteMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallByteMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetB();
   }
@@ -1012,6 +1057,8 @@
   static jchar CallCharMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallCharMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallCharMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
@@ -1019,11 +1066,15 @@
   }
 
   static jchar CallCharMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallCharMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallCharMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetC();
   }
 
   static jchar CallCharMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallCharMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallCharMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetC();
   }
@@ -1031,6 +1082,8 @@
   static jdouble CallDoubleMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallDoubleMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallDoubleMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
@@ -1038,30 +1091,40 @@
   }
 
   static jdouble CallDoubleMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallDoubleMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallDoubleMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetD();
   }
 
   static jdouble CallDoubleMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallDoubleMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallDoubleMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetD();
   }
 
   static jfloat CallFloatMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
-    ScopedObjectAccess soa(env);
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallFloatMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallFloatMethod, mid);
+    ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
     return result.GetF();
   }
 
   static jfloat CallFloatMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallFloatMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallFloatMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetF();
   }
 
   static jfloat CallFloatMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallFloatMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallFloatMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetF();
   }
@@ -1069,6 +1132,8 @@
   static jint CallIntMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallIntMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallIntMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
@@ -1076,11 +1141,15 @@
   }
 
   static jint CallIntMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallIntMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallIntMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetI();
   }
 
   static jint CallIntMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallIntMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallIntMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetI();
   }
@@ -1088,6 +1157,8 @@
   static jlong CallLongMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallLongMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallLongMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
@@ -1095,11 +1166,15 @@
   }
 
   static jlong CallLongMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallLongMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallLongMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetJ();
   }
 
   static jlong CallLongMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallLongMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallLongMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetJ();
   }
@@ -1107,6 +1182,8 @@
   static jshort CallShortMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallShortMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallShortMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
@@ -1114,11 +1191,15 @@
   }
 
   static jshort CallShortMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallShortMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallShortMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args).GetS();
   }
 
   static jshort CallShortMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallShortMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallShortMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args).GetS();
   }
@@ -1126,17 +1207,23 @@
   static void CallVoidMethod(JNIEnv* env, jobject obj, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallVoidMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallVoidMethod, mid);
     ScopedObjectAccess soa(env);
     InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, ap);
     va_end(ap);
   }
 
   static void CallVoidMethodV(JNIEnv* env, jobject obj, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallVoidMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallVoidMethodV, mid);
     ScopedObjectAccess soa(env);
     InvokeVirtualOrInterfaceWithVarArgs(soa, obj, mid, args);
   }
 
   static void CallVoidMethodA(JNIEnv* env, jobject obj, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallVoidMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallVoidMethodA, mid);
     ScopedObjectAccess soa(env);
     InvokeVirtualOrInterfaceWithJValues(soa, obj, mid, args);
   }
@@ -1144,6 +1231,8 @@
   static jobject CallNonvirtualObjectMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualObjectMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualObjectMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
     jobject local_result = soa.AddLocalReference<jobject>(result.GetL());
@@ -1151,38 +1240,48 @@
     return local_result;
   }
 
-  static jobject CallNonvirtualObjectMethodV(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, va_list args) {
+  static jobject CallNonvirtualObjectMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                             va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualObjectMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualObjectMethodV, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, obj, mid, args));
     return soa.AddLocalReference<jobject>(result.GetL());
   }
 
-  static jobject CallNonvirtualObjectMethodA(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, jvalue* args) {
+  static jobject CallNonvirtualObjectMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                             jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualObjectMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualObjectMethodA, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithJValues(soa, obj, mid, args));
     return soa.AddLocalReference<jobject>(result.GetL());
   }
 
-  static jboolean CallNonvirtualBooleanMethod(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, ...) {
+  static jboolean CallNonvirtualBooleanMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                              ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualBooleanMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualBooleanMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
     return result.GetZ();
   }
 
-  static jboolean CallNonvirtualBooleanMethodV(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, va_list args) {
+  static jboolean CallNonvirtualBooleanMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                               va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualBooleanMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualBooleanMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, obj, mid, args).GetZ();
   }
 
-  static jboolean CallNonvirtualBooleanMethodA(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, jvalue* args) {
+  static jboolean CallNonvirtualBooleanMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                               jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualBooleanMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualBooleanMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, obj, mid, args).GetZ();
   }
@@ -1190,41 +1289,53 @@
   static jbyte CallNonvirtualByteMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualByteMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualByteMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
     return result.GetB();
   }
 
-  static jbyte CallNonvirtualByteMethodV(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, va_list args) {
+  static jbyte CallNonvirtualByteMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                         va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualByteMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualByteMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, obj, mid, args).GetB();
   }
 
-  static jbyte CallNonvirtualByteMethodA(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, jvalue* args) {
+  static jbyte CallNonvirtualByteMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                         jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualByteMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualByteMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, obj, mid, args).GetB();
   }
 
   static jchar CallNonvirtualCharMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
-    ScopedObjectAccess soa(env);
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualCharMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualCharMethod, mid);
+    ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
     return result.GetC();
   }
 
-  static jchar CallNonvirtualCharMethodV(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, va_list args) {
+  static jchar CallNonvirtualCharMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                         va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualCharMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualCharMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, obj, mid, args).GetC();
   }
 
-  static jchar CallNonvirtualCharMethodA(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, jvalue* args) {
+  static jchar CallNonvirtualCharMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                         jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualCharMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualCharMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, obj, mid, args).GetC();
   }
@@ -1232,20 +1343,26 @@
   static jshort CallNonvirtualShortMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualShortMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualShortMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
     return result.GetS();
   }
 
-  static jshort CallNonvirtualShortMethodV(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, va_list args) {
+  static jshort CallNonvirtualShortMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                           va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualShortMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualShortMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, obj, mid, args).GetS();
   }
 
-  static jshort CallNonvirtualShortMethodA(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, jvalue* args) {
+  static jshort CallNonvirtualShortMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                           jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualShortMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualShortMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, obj, mid, args).GetS();
   }
@@ -1253,20 +1370,26 @@
   static jint CallNonvirtualIntMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualIntMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualIntMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
     return result.GetI();
   }
 
-  static jint CallNonvirtualIntMethodV(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, va_list args) {
+  static jint CallNonvirtualIntMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                       va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualIntMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualIntMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, obj, mid, args).GetI();
   }
 
-  static jint CallNonvirtualIntMethodA(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, jvalue* args) {
+  static jint CallNonvirtualIntMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                       jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualIntMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualIntMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, obj, mid, args).GetI();
   }
@@ -1274,20 +1397,26 @@
   static jlong CallNonvirtualLongMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualLongMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualLongMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
     return result.GetJ();
   }
 
-  static jlong CallNonvirtualLongMethodV(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, va_list args) {
+  static jlong CallNonvirtualLongMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                         va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualLongMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualLongMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, obj, mid, args).GetJ();
   }
 
-  static jlong CallNonvirtualLongMethodA(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, jvalue* args) {
+  static jlong CallNonvirtualLongMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                         jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualLongMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualLongMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, obj, mid, args).GetJ();
   }
@@ -1295,20 +1424,26 @@
   static jfloat CallNonvirtualFloatMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualFloatMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualFloatMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
     return result.GetF();
   }
 
-  static jfloat CallNonvirtualFloatMethodV(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, va_list args) {
+  static jfloat CallNonvirtualFloatMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                           va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualFloatMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualFloatMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, obj, mid, args).GetF();
   }
 
-  static jfloat CallNonvirtualFloatMethodA(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, jvalue* args) {
+  static jfloat CallNonvirtualFloatMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                           jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualFloatMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualFloatMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, obj, mid, args).GetF();
   }
@@ -1316,20 +1451,26 @@
   static jdouble CallNonvirtualDoubleMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualDoubleMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualDoubleMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, obj, mid, ap));
     va_end(ap);
     return result.GetD();
   }
 
-  static jdouble CallNonvirtualDoubleMethodV(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, va_list args) {
+  static jdouble CallNonvirtualDoubleMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                             va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualDoubleMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualDoubleMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, obj, mid, args).GetD();
   }
 
-  static jdouble CallNonvirtualDoubleMethodA(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, jvalue* args) {
+  static jdouble CallNonvirtualDoubleMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                             jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualDoubleMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualDoubleMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, obj, mid, args).GetD();
   }
@@ -1337,6 +1478,8 @@
   static void CallNonvirtualVoidMethod(JNIEnv* env, jobject obj, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualVoidMethod, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualVoidMethod, mid);
     ScopedObjectAccess soa(env);
     InvokeWithVarArgs(soa, obj, mid, ap);
     va_end(ap);
@@ -1344,28 +1487,40 @@
 
   static void CallNonvirtualVoidMethodV(JNIEnv* env, jobject obj, jclass, jmethodID mid,
                                         va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualVoidMethodV, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualVoidMethodV, mid);
     ScopedObjectAccess soa(env);
     InvokeWithVarArgs(soa, obj, mid, args);
   }
 
-  static void CallNonvirtualVoidMethodA(JNIEnv* env,
-      jobject obj, jclass, jmethodID mid, jvalue* args) {
+  static void CallNonvirtualVoidMethodA(JNIEnv* env, jobject obj, jclass, jmethodID mid,
+                                        jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualVoidMethodA, obj);
+    CHECK_NON_NULL_ARGUMENT(CallNonvirtualVoidMethodA, mid);
     ScopedObjectAccess soa(env);
     InvokeWithJValues(soa, obj, mid, args);
   }
 
-  static jfieldID GetFieldID(JNIEnv* env, jclass c, const char* name, const char* sig) {
+  static jfieldID GetFieldID(JNIEnv* env, jclass java_class, const char* name, const char* sig) {
+    CHECK_NON_NULL_ARGUMENT(GetFieldID, java_class);
+    CHECK_NON_NULL_ARGUMENT(GetFieldID, name);
+    CHECK_NON_NULL_ARGUMENT(GetFieldID, sig);
     ScopedObjectAccess soa(env);
-    return FindFieldID(soa, c, name, sig, false);
+    return FindFieldID(soa, java_class, name, sig, false);
   }
 
-
-  static jfieldID GetStaticFieldID(JNIEnv* env, jclass c, const char* name, const char* sig) {
+  static jfieldID GetStaticFieldID(JNIEnv* env, jclass java_class, const char* name,
+                                   const char* sig) {
+    CHECK_NON_NULL_ARGUMENT(GetStaticFieldID, java_class);
+    CHECK_NON_NULL_ARGUMENT(GetStaticFieldID, name);
+    CHECK_NON_NULL_ARGUMENT(GetFieldID, sig);
     ScopedObjectAccess soa(env);
-    return FindFieldID(soa, c, name, sig, true);
+    return FindFieldID(soa, java_class, name, sig, true);
   }
 
   static jobject GetObjectField(JNIEnv* env, jobject obj, jfieldID fid) {
+    CHECK_NON_NULL_ARGUMENT(GetObjectField, obj);
+    CHECK_NON_NULL_ARGUMENT(GetObjectField, fid);
     ScopedObjectAccess soa(env);
     Object* o = soa.Decode<Object*>(obj);
     ArtField* f = soa.DecodeField(fid);
@@ -1373,12 +1528,15 @@
   }
 
   static jobject GetStaticObjectField(JNIEnv* env, jclass, jfieldID fid) {
+    CHECK_NON_NULL_ARGUMENT(GetStaticObjectField, fid);
     ScopedObjectAccess soa(env);
     ArtField* f = soa.DecodeField(fid);
     return soa.AddLocalReference<jobject>(f->GetObject(f->GetDeclaringClass()));
   }
 
   static void SetObjectField(JNIEnv* env, jobject java_object, jfieldID fid, jobject java_value) {
+    CHECK_NON_NULL_ARGUMENT(SetObjectField, java_object);
+    CHECK_NON_NULL_ARGUMENT(SetObjectField, fid);
     ScopedObjectAccess soa(env);
     Object* o = soa.Decode<Object*>(java_object);
     Object* v = soa.Decode<Object*>(java_value);
@@ -1387,6 +1545,7 @@
   }
 
   static void SetStaticObjectField(JNIEnv* env, jclass, jfieldID fid, jobject java_value) {
+    CHECK_NON_NULL_ARGUMENT(SetStaticObjectField, fid);
     ScopedObjectAccess soa(env);
     Object* v = soa.Decode<Object*>(java_value);
     ArtField* f = soa.DecodeField(fid);
@@ -1394,158 +1553,165 @@
   }
 
 #define GET_PRIMITIVE_FIELD(fn, instance) \
+  CHECK_NON_NULL_ARGUMENT(Get #fn Field, instance); \
+  CHECK_NON_NULL_ARGUMENT(Get #fn Field, fid); \
   ScopedObjectAccess soa(env); \
   Object* o = soa.Decode<Object*>(instance); \
   ArtField* f = soa.DecodeField(fid); \
-  return f->fn(o)
+  return f->Get ##fn (o)
 
 #define GET_STATIC_PRIMITIVE_FIELD(fn) \
+  CHECK_NON_NULL_ARGUMENT(GetStatic #fn Field, fid); \
   ScopedObjectAccess soa(env); \
   ArtField* f = soa.DecodeField(fid); \
-  return f->fn(f->GetDeclaringClass())
+  return f->Get ##fn (f->GetDeclaringClass())
 
 #define SET_PRIMITIVE_FIELD(fn, instance, value) \
+  CHECK_NON_NULL_ARGUMENT(Set #fn Field, instance); \
+  CHECK_NON_NULL_ARGUMENT(Set #fn Field, fid); \
   ScopedObjectAccess soa(env); \
   Object* o = soa.Decode<Object*>(instance); \
   ArtField* f = soa.DecodeField(fid); \
-  f->fn(o, value)
+  f->Set ##fn(o, value)
 
 #define SET_STATIC_PRIMITIVE_FIELD(fn, value) \
+  CHECK_NON_NULL_ARGUMENT(SetStatic #fn Field, fid); \
   ScopedObjectAccess soa(env); \
   ArtField* f = soa.DecodeField(fid); \
-  f->fn(f->GetDeclaringClass(), value)
+  f->Set ##fn(f->GetDeclaringClass(), value)
 
   static jboolean GetBooleanField(JNIEnv* env, jobject obj, jfieldID fid) {
-    GET_PRIMITIVE_FIELD(GetBoolean, obj);
+    GET_PRIMITIVE_FIELD(Boolean, obj);
   }
 
   static jbyte GetByteField(JNIEnv* env, jobject obj, jfieldID fid) {
-    GET_PRIMITIVE_FIELD(GetByte, obj);
+    GET_PRIMITIVE_FIELD(Byte, obj);
   }
 
   static jchar GetCharField(JNIEnv* env, jobject obj, jfieldID fid) {
-    GET_PRIMITIVE_FIELD(GetChar, obj);
+    GET_PRIMITIVE_FIELD(Char, obj);
   }
 
   static jshort GetShortField(JNIEnv* env, jobject obj, jfieldID fid) {
-    GET_PRIMITIVE_FIELD(GetShort, obj);
+    GET_PRIMITIVE_FIELD(Short, obj);
   }
 
   static jint GetIntField(JNIEnv* env, jobject obj, jfieldID fid) {
-    GET_PRIMITIVE_FIELD(GetInt, obj);
+    GET_PRIMITIVE_FIELD(Int, obj);
   }
 
   static jlong GetLongField(JNIEnv* env, jobject obj, jfieldID fid) {
-    GET_PRIMITIVE_FIELD(GetLong, obj);
+    GET_PRIMITIVE_FIELD(Long, obj);
   }
 
   static jfloat GetFloatField(JNIEnv* env, jobject obj, jfieldID fid) {
-    GET_PRIMITIVE_FIELD(GetFloat, obj);
+    GET_PRIMITIVE_FIELD(Float, obj);
   }
 
   static jdouble GetDoubleField(JNIEnv* env, jobject obj, jfieldID fid) {
-    GET_PRIMITIVE_FIELD(GetDouble, obj);
+    GET_PRIMITIVE_FIELD(Double, obj);
   }
 
   static jboolean GetStaticBooleanField(JNIEnv* env, jclass, jfieldID fid) {
-    GET_STATIC_PRIMITIVE_FIELD(GetBoolean);
+    GET_STATIC_PRIMITIVE_FIELD(Boolean);
   }
 
   static jbyte GetStaticByteField(JNIEnv* env, jclass, jfieldID fid) {
-    GET_STATIC_PRIMITIVE_FIELD(GetByte);
+    GET_STATIC_PRIMITIVE_FIELD(Byte);
   }
 
   static jchar GetStaticCharField(JNIEnv* env, jclass, jfieldID fid) {
-    GET_STATIC_PRIMITIVE_FIELD(GetChar);
+    GET_STATIC_PRIMITIVE_FIELD(Char);
   }
 
   static jshort GetStaticShortField(JNIEnv* env, jclass, jfieldID fid) {
-    GET_STATIC_PRIMITIVE_FIELD(GetShort);
+    GET_STATIC_PRIMITIVE_FIELD(Short);
   }
 
   static jint GetStaticIntField(JNIEnv* env, jclass, jfieldID fid) {
-    GET_STATIC_PRIMITIVE_FIELD(GetInt);
+    GET_STATIC_PRIMITIVE_FIELD(Int);
   }
 
   static jlong GetStaticLongField(JNIEnv* env, jclass, jfieldID fid) {
-    GET_STATIC_PRIMITIVE_FIELD(GetLong);
+    GET_STATIC_PRIMITIVE_FIELD(Long);
   }
 
   static jfloat GetStaticFloatField(JNIEnv* env, jclass, jfieldID fid) {
-    GET_STATIC_PRIMITIVE_FIELD(GetFloat);
+    GET_STATIC_PRIMITIVE_FIELD(Float);
   }
 
   static jdouble GetStaticDoubleField(JNIEnv* env, jclass, jfieldID fid) {
-    GET_STATIC_PRIMITIVE_FIELD(GetDouble);
+    GET_STATIC_PRIMITIVE_FIELD(Double);
   }
 
   static void SetBooleanField(JNIEnv* env, jobject obj, jfieldID fid, jboolean v) {
-    SET_PRIMITIVE_FIELD(SetBoolean, obj, v);
+    SET_PRIMITIVE_FIELD(Boolean, obj, v);
   }
 
   static void SetByteField(JNIEnv* env, jobject obj, jfieldID fid, jbyte v) {
-    SET_PRIMITIVE_FIELD(SetByte, obj, v);
+    SET_PRIMITIVE_FIELD(Byte, obj, v);
   }
 
   static void SetCharField(JNIEnv* env, jobject obj, jfieldID fid, jchar v) {
-    SET_PRIMITIVE_FIELD(SetChar, obj, v);
+    SET_PRIMITIVE_FIELD(Char, obj, v);
   }
 
   static void SetFloatField(JNIEnv* env, jobject obj, jfieldID fid, jfloat v) {
-    SET_PRIMITIVE_FIELD(SetFloat, obj, v);
+    SET_PRIMITIVE_FIELD(Float, obj, v);
   }
 
   static void SetDoubleField(JNIEnv* env, jobject obj, jfieldID fid, jdouble v) {
-    SET_PRIMITIVE_FIELD(SetDouble, obj, v);
+    SET_PRIMITIVE_FIELD(Double, obj, v);
   }
 
   static void SetIntField(JNIEnv* env, jobject obj, jfieldID fid, jint v) {
-    SET_PRIMITIVE_FIELD(SetInt, obj, v);
+    SET_PRIMITIVE_FIELD(Int, obj, v);
   }
 
   static void SetLongField(JNIEnv* env, jobject obj, jfieldID fid, jlong v) {
-    SET_PRIMITIVE_FIELD(SetLong, obj, v);
+    SET_PRIMITIVE_FIELD(Long, obj, v);
   }
 
   static void SetShortField(JNIEnv* env, jobject obj, jfieldID fid, jshort v) {
-    SET_PRIMITIVE_FIELD(SetShort, obj, v);
+    SET_PRIMITIVE_FIELD(Short, obj, v);
   }
 
   static void SetStaticBooleanField(JNIEnv* env, jclass, jfieldID fid, jboolean v) {
-    SET_STATIC_PRIMITIVE_FIELD(SetBoolean, v);
+    SET_STATIC_PRIMITIVE_FIELD(Boolean, v);
   }
 
   static void SetStaticByteField(JNIEnv* env, jclass, jfieldID fid, jbyte v) {
-    SET_STATIC_PRIMITIVE_FIELD(SetByte, v);
+    SET_STATIC_PRIMITIVE_FIELD(Byte, v);
   }
 
   static void SetStaticCharField(JNIEnv* env, jclass, jfieldID fid, jchar v) {
-    SET_STATIC_PRIMITIVE_FIELD(SetChar, v);
+    SET_STATIC_PRIMITIVE_FIELD(Char, v);
   }
 
   static void SetStaticFloatField(JNIEnv* env, jclass, jfieldID fid, jfloat v) {
-    SET_STATIC_PRIMITIVE_FIELD(SetFloat, v);
+    SET_STATIC_PRIMITIVE_FIELD(Float, v);
   }
 
   static void SetStaticDoubleField(JNIEnv* env, jclass, jfieldID fid, jdouble v) {
-    SET_STATIC_PRIMITIVE_FIELD(SetDouble, v);
+    SET_STATIC_PRIMITIVE_FIELD(Double, v);
   }
 
   static void SetStaticIntField(JNIEnv* env, jclass, jfieldID fid, jint v) {
-    SET_STATIC_PRIMITIVE_FIELD(SetInt, v);
+    SET_STATIC_PRIMITIVE_FIELD(Int, v);
   }
 
   static void SetStaticLongField(JNIEnv* env, jclass, jfieldID fid, jlong v) {
-    SET_STATIC_PRIMITIVE_FIELD(SetLong, v);
+    SET_STATIC_PRIMITIVE_FIELD(Long, v);
   }
 
   static void SetStaticShortField(JNIEnv* env, jclass, jfieldID fid, jshort v) {
-    SET_STATIC_PRIMITIVE_FIELD(SetShort, v);
+    SET_STATIC_PRIMITIVE_FIELD(Short, v);
   }
 
   static jobject CallStaticObjectMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallStaticObjectMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, NULL, mid, ap));
     jobject local_result = soa.AddLocalReference<jobject>(result.GetL());
@@ -1554,12 +1720,14 @@
   }
 
   static jobject CallStaticObjectMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticObjectMethodV, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, NULL, mid, args));
     return soa.AddLocalReference<jobject>(result.GetL());
   }
 
   static jobject CallStaticObjectMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticObjectMethodA, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithJValues(soa, NULL, mid, args));
     return soa.AddLocalReference<jobject>(result.GetL());
@@ -1568,6 +1736,7 @@
   static jboolean CallStaticBooleanMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallStaticBooleanMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, NULL, mid, ap));
     va_end(ap);
@@ -1575,11 +1744,13 @@
   }
 
   static jboolean CallStaticBooleanMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticBooleanMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, NULL, mid, args).GetZ();
   }
 
   static jboolean CallStaticBooleanMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticBooleanMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, NULL, mid, args).GetZ();
   }
@@ -1587,6 +1758,7 @@
   static jbyte CallStaticByteMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallStaticByteMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, NULL, mid, ap));
     va_end(ap);
@@ -1594,11 +1766,13 @@
   }
 
   static jbyte CallStaticByteMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticByteMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, NULL, mid, args).GetB();
   }
 
   static jbyte CallStaticByteMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticByteMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, NULL, mid, args).GetB();
   }
@@ -1606,6 +1780,7 @@
   static jchar CallStaticCharMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallStaticCharMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, NULL, mid, ap));
     va_end(ap);
@@ -1613,11 +1788,13 @@
   }
 
   static jchar CallStaticCharMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticCharMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, NULL, mid, args).GetC();
   }
 
   static jchar CallStaticCharMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticCharMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, NULL, mid, args).GetC();
   }
@@ -1625,6 +1802,7 @@
   static jshort CallStaticShortMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallStaticShortMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, NULL, mid, ap));
     va_end(ap);
@@ -1632,11 +1810,13 @@
   }
 
   static jshort CallStaticShortMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticShortMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, NULL, mid, args).GetS();
   }
 
   static jshort CallStaticShortMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticShortMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, NULL, mid, args).GetS();
   }
@@ -1644,6 +1824,7 @@
   static jint CallStaticIntMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallStaticIntMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, NULL, mid, ap));
     va_end(ap);
@@ -1651,11 +1832,13 @@
   }
 
   static jint CallStaticIntMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticIntMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, NULL, mid, args).GetI();
   }
 
   static jint CallStaticIntMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticIntMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, NULL, mid, args).GetI();
   }
@@ -1663,6 +1846,7 @@
   static jlong CallStaticLongMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallStaticLongMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, NULL, mid, ap));
     va_end(ap);
@@ -1670,11 +1854,13 @@
   }
 
   static jlong CallStaticLongMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticLongMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, NULL, mid, args).GetJ();
   }
 
   static jlong CallStaticLongMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticLongMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, NULL, mid, args).GetJ();
   }
@@ -1682,6 +1868,7 @@
   static jfloat CallStaticFloatMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallStaticFloatMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, NULL, mid, ap));
     va_end(ap);
@@ -1689,11 +1876,13 @@
   }
 
   static jfloat CallStaticFloatMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticFloatMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, NULL, mid, args).GetF();
   }
 
   static jfloat CallStaticFloatMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticFloatMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, NULL, mid, args).GetF();
   }
@@ -1701,6 +1890,7 @@
   static jdouble CallStaticDoubleMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallStaticDoubleMethod, mid);
     ScopedObjectAccess soa(env);
     JValue result(InvokeWithVarArgs(soa, NULL, mid, ap));
     va_end(ap);
@@ -1708,11 +1898,13 @@
   }
 
   static jdouble CallStaticDoubleMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticDoubleMethodV, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithVarArgs(soa, NULL, mid, args).GetD();
   }
 
   static jdouble CallStaticDoubleMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticDoubleMethodA, mid);
     ScopedObjectAccess soa(env);
     return InvokeWithJValues(soa, NULL, mid, args).GetD();
   }
@@ -1720,22 +1912,28 @@
   static void CallStaticVoidMethod(JNIEnv* env, jclass, jmethodID mid, ...) {
     va_list ap;
     va_start(ap, mid);
+    CHECK_NON_NULL_ARGUMENT(CallStaticVoidMethod, mid);
     ScopedObjectAccess soa(env);
     InvokeWithVarArgs(soa, NULL, mid, ap);
     va_end(ap);
   }
 
   static void CallStaticVoidMethodV(JNIEnv* env, jclass, jmethodID mid, va_list args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticVoidMethodV, mid);
     ScopedObjectAccess soa(env);
     InvokeWithVarArgs(soa, NULL, mid, args);
   }
 
   static void CallStaticVoidMethodA(JNIEnv* env, jclass, jmethodID mid, jvalue* args) {
+    CHECK_NON_NULL_ARGUMENT(CallStaticVoidMethodA, mid);
     ScopedObjectAccess soa(env);
     InvokeWithJValues(soa, NULL, mid, args);
   }
 
   static jstring NewString(JNIEnv* env, const jchar* chars, jsize char_count) {
+    if (UNLIKELY(chars == NULL && char_count > 0)) { \
+      JniAbortF("NewString", "char == null && char_count > 0"); \
+    }
     ScopedObjectAccess soa(env);
     String* result = String::AllocFromUtf16(soa.Self(), char_count, chars);
     return soa.AddLocalReference<jstring>(result);
@@ -1751,38 +1949,47 @@
   }
 
   static jsize GetStringLength(JNIEnv* env, jstring java_string) {
+    CHECK_NON_NULL_ARGUMENT(GetStringLength, java_string);
     ScopedObjectAccess soa(env);
     return soa.Decode<String*>(java_string)->GetLength();
   }
 
   static jsize GetStringUTFLength(JNIEnv* env, jstring java_string) {
+    CHECK_NON_NULL_ARGUMENT(GetStringLength, java_string);
     ScopedObjectAccess soa(env);
     return soa.Decode<String*>(java_string)->GetUtfLength();
   }
 
-  static void GetStringRegion(JNIEnv* env, jstring java_string, jsize start, jsize length, jchar* buf) {
+  static void GetStringRegion(JNIEnv* env, jstring java_string, jsize start, jsize length,
+                              jchar* buf) {
+    CHECK_NON_NULL_ARGUMENT(GetStringRegion, java_string);
     ScopedObjectAccess soa(env);
     String* s = soa.Decode<String*>(java_string);
     if (start < 0 || length < 0 || start + length > s->GetLength()) {
       ThrowSIOOBE(soa, start, length, s->GetLength());
     } else {
+      CHECK_NON_NULL_ARGUMENT(GetStringRegion, buf);
       const jchar* chars = s->GetCharArray()->GetData() + s->GetOffset();
       memcpy(buf, chars + start, length * sizeof(jchar));
     }
   }
 
-  static void GetStringUTFRegion(JNIEnv* env, jstring java_string, jsize start, jsize length, char* buf) {
+  static void GetStringUTFRegion(JNIEnv* env, jstring java_string, jsize start, jsize length,
+                                 char* buf) {
+    CHECK_NON_NULL_ARGUMENT(GetStringUTFRegion, java_string);
     ScopedObjectAccess soa(env);
     String* s = soa.Decode<String*>(java_string);
     if (start < 0 || length < 0 || start + length > s->GetLength()) {
       ThrowSIOOBE(soa, start, length, s->GetLength());
     } else {
+      CHECK_NON_NULL_ARGUMENT(GetStringUTFRegion, buf);
       const jchar* chars = s->GetCharArray()->GetData() + s->GetOffset();
       ConvertUtf16ToModifiedUtf8(buf, chars + start, length);
     }
   }
 
   static const jchar* GetStringChars(JNIEnv* env, jstring java_string, jboolean* is_copy) {
+    CHECK_NON_NULL_ARGUMENT(GetStringUTFRegion, java_string);
     ScopedObjectAccess soa(env);
     String* s = soa.Decode<String*>(java_string);
     const CharArray* chars = s->GetCharArray();
@@ -1794,6 +2001,7 @@
   }
 
   static void ReleaseStringChars(JNIEnv* env, jstring java_string, const jchar*) {
+    CHECK_NON_NULL_ARGUMENT(GetStringUTFRegion, java_string);
     ScopedObjectAccess soa(env);
     UnpinPrimitiveArray(soa, soa.Decode<String*>(java_string)->GetCharArray());
   }
@@ -1803,7 +2011,6 @@
   }
 
   static void ReleaseStringCritical(JNIEnv* env, jstring java_string, const jchar* chars) {
-    ScopedObjectAccess soa(env);
     return ReleaseStringChars(env, java_string, chars);
   }
 
@@ -1830,6 +2037,7 @@
   }
 
   static jsize GetArrayLength(JNIEnv* env, jarray java_array) {
+    CHECK_NON_NULL_ARGUMENT(GetArrayLength, java_array);
     ScopedObjectAccess soa(env);
     Object* obj = soa.Decode<Object*>(java_array);
     if (UNLIKELY(!obj->IsArrayInstance())) {
@@ -1840,13 +2048,15 @@
   }
 
   static jobject GetObjectArrayElement(JNIEnv* env, jobjectArray java_array, jsize index) {
+    CHECK_NON_NULL_ARGUMENT(GetObjectArrayElement, java_array);
     ScopedObjectAccess soa(env);
     ObjectArray<Object>* array = soa.Decode<ObjectArray<Object>*>(java_array);
     return soa.AddLocalReference<jobject>(array->Get(index));
   }
 
-  static void SetObjectArrayElement(JNIEnv* env,
-      jobjectArray java_array, jsize index, jobject java_value) {
+  static void SetObjectArrayElement(JNIEnv* env, jobjectArray java_array, jsize index,
+                                    jobject java_value) {
+    CHECK_NON_NULL_ARGUMENT(SetObjectArrayElement, java_array);
     ScopedObjectAccess soa(env);
     ObjectArray<Object>* array = soa.Decode<ObjectArray<Object>*>(java_array);
     Object* value = soa.Decode<Object*>(java_value);
@@ -1924,6 +2134,7 @@
   }
 
   static void* GetPrimitiveArrayCritical(JNIEnv* env, jarray java_array, jboolean* is_copy) {
+    CHECK_NON_NULL_ARGUMENT(GetPrimitiveArrayCritical, java_array);
     ScopedObjectAccess soa(env);
     Array* array = soa.Decode<Array*>(java_array);
     PinPrimitiveArray(soa, array);
@@ -1934,45 +2145,54 @@
   }
 
   static void ReleasePrimitiveArrayCritical(JNIEnv* env, jarray array, void*, jint mode) {
+    CHECK_NON_NULL_ARGUMENT(ReleasePrimitiveArrayCritical, array);
     ReleasePrimitiveArray(env, array, mode);
   }
 
   static jboolean* GetBooleanArrayElements(JNIEnv* env, jbooleanArray array, jboolean* is_copy) {
+    CHECK_NON_NULL_ARGUMENT(GetBooleanArrayElements, array);
     ScopedObjectAccess soa(env);
     return GetPrimitiveArray<jbooleanArray, jboolean*, BooleanArray>(soa, array, is_copy);
   }
 
   static jbyte* GetByteArrayElements(JNIEnv* env, jbyteArray array, jboolean* is_copy) {
+    CHECK_NON_NULL_ARGUMENT(GetByteArrayElements, array);
     ScopedObjectAccess soa(env);
     return GetPrimitiveArray<jbyteArray, jbyte*, ByteArray>(soa, array, is_copy);
   }
 
   static jchar* GetCharArrayElements(JNIEnv* env, jcharArray array, jboolean* is_copy) {
+    CHECK_NON_NULL_ARGUMENT(GetCharArrayElements, array);
     ScopedObjectAccess soa(env);
     return GetPrimitiveArray<jcharArray, jchar*, CharArray>(soa, array, is_copy);
   }
 
   static jdouble* GetDoubleArrayElements(JNIEnv* env, jdoubleArray array, jboolean* is_copy) {
+    CHECK_NON_NULL_ARGUMENT(GetDoubleArrayElements, array);
     ScopedObjectAccess soa(env);
     return GetPrimitiveArray<jdoubleArray, jdouble*, DoubleArray>(soa, array, is_copy);
   }
 
   static jfloat* GetFloatArrayElements(JNIEnv* env, jfloatArray array, jboolean* is_copy) {
+    CHECK_NON_NULL_ARGUMENT(GetFloatArrayElements, array);
     ScopedObjectAccess soa(env);
     return GetPrimitiveArray<jfloatArray, jfloat*, FloatArray>(soa, array, is_copy);
   }
 
   static jint* GetIntArrayElements(JNIEnv* env, jintArray array, jboolean* is_copy) {
+    CHECK_NON_NULL_ARGUMENT(GetIntArrayElements, array);
     ScopedObjectAccess soa(env);
     return GetPrimitiveArray<jintArray, jint*, IntArray>(soa, array, is_copy);
   }
 
   static jlong* GetLongArrayElements(JNIEnv* env, jlongArray array, jboolean* is_copy) {
+    CHECK_NON_NULL_ARGUMENT(GetLongArrayElements, array);
     ScopedObjectAccess soa(env);
     return GetPrimitiveArray<jlongArray, jlong*, LongArray>(soa, array, is_copy);
   }
 
   static jshort* GetShortArrayElements(JNIEnv* env, jshortArray array, jboolean* is_copy) {
+    CHECK_NON_NULL_ARGUMENT(GetShortArrayElements, array);
     ScopedObjectAccess soa(env);
     return GetPrimitiveArray<jshortArray, jshort*, ShortArray>(soa, array, is_copy);
   }
@@ -2009,95 +2229,123 @@
     ReleasePrimitiveArray(env, array, mode);
   }
 
-  static void GetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length, jboolean* buf) {
+  static void GetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length,
+                                    jboolean* buf) {
     ScopedObjectAccess soa(env);
     GetPrimitiveArrayRegion<jbooleanArray, jboolean, BooleanArray>(soa, array, start, length, buf);
   }
 
-  static void GetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length, jbyte* buf) {
+  static void GetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length,
+                                 jbyte* buf) {
     ScopedObjectAccess soa(env);
     GetPrimitiveArrayRegion<jbyteArray, jbyte, ByteArray>(soa, array, start, length, buf);
   }
 
-  static void GetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length, jchar* buf) {
+  static void GetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length,
+                                 jchar* buf) {
     ScopedObjectAccess soa(env);
     GetPrimitiveArrayRegion<jcharArray, jchar, CharArray>(soa, array, start, length, buf);
   }
 
-  static void GetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length, jdouble* buf) {
+  static void GetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length,
+                                   jdouble* buf) {
     ScopedObjectAccess soa(env);
     GetPrimitiveArrayRegion<jdoubleArray, jdouble, DoubleArray>(soa, array, start, length, buf);
   }
 
-  static void GetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length, jfloat* buf) {
+  static void GetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length,
+                                  jfloat* buf) {
     ScopedObjectAccess soa(env);
     GetPrimitiveArrayRegion<jfloatArray, jfloat, FloatArray>(soa, array, start, length, buf);
   }
 
-  static void GetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length, jint* buf) {
+  static void GetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length,
+                                jint* buf) {
     ScopedObjectAccess soa(env);
     GetPrimitiveArrayRegion<jintArray, jint, IntArray>(soa, array, start, length, buf);
   }
 
-  static void GetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length, jlong* buf) {
+  static void GetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length,
+                                 jlong* buf) {
     ScopedObjectAccess soa(env);
     GetPrimitiveArrayRegion<jlongArray, jlong, LongArray>(soa, array, start, length, buf);
   }
 
-  static void GetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length, jshort* buf) {
+  static void GetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length,
+                                  jshort* buf) {
     ScopedObjectAccess soa(env);
     GetPrimitiveArrayRegion<jshortArray, jshort, ShortArray>(soa, array, start, length, buf);
   }
 
-  static void SetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length, const jboolean* buf) {
+  static void SetBooleanArrayRegion(JNIEnv* env, jbooleanArray array, jsize start, jsize length,
+                                    const jboolean* buf) {
     ScopedObjectAccess soa(env);
     SetPrimitiveArrayRegion<jbooleanArray, jboolean, BooleanArray>(soa, array, start, length, buf);
   }
 
-  static void SetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length, const jbyte* buf) {
+  static void SetByteArrayRegion(JNIEnv* env, jbyteArray array, jsize start, jsize length,
+                                 const jbyte* buf) {
     ScopedObjectAccess soa(env);
     SetPrimitiveArrayRegion<jbyteArray, jbyte, ByteArray>(soa, array, start, length, buf);
   }
 
-  static void SetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length, const jchar* buf) {
+  static void SetCharArrayRegion(JNIEnv* env, jcharArray array, jsize start, jsize length,
+                                 const jchar* buf) {
     ScopedObjectAccess soa(env);
     SetPrimitiveArrayRegion<jcharArray, jchar, CharArray>(soa, array, start, length, buf);
   }
 
-  static void SetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length, const jdouble* buf) {
+  static void SetDoubleArrayRegion(JNIEnv* env, jdoubleArray array, jsize start, jsize length,
+                                   const jdouble* buf) {
     ScopedObjectAccess soa(env);
     SetPrimitiveArrayRegion<jdoubleArray, jdouble, DoubleArray>(soa, array, start, length, buf);
   }
 
-  static void SetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length, const jfloat* buf) {
+  static void SetFloatArrayRegion(JNIEnv* env, jfloatArray array, jsize start, jsize length,
+                                  const jfloat* buf) {
     ScopedObjectAccess soa(env);
     SetPrimitiveArrayRegion<jfloatArray, jfloat, FloatArray>(soa, array, start, length, buf);
   }
 
-  static void SetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length, const jint* buf) {
+  static void SetIntArrayRegion(JNIEnv* env, jintArray array, jsize start, jsize length,
+                                const jint* buf) {
     ScopedObjectAccess soa(env);
     SetPrimitiveArrayRegion<jintArray, jint, IntArray>(soa, array, start, length, buf);
   }
 
-  static void SetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length, const jlong* buf) {
+  static void SetLongArrayRegion(JNIEnv* env, jlongArray array, jsize start, jsize length,
+                                 const jlong* buf) {
     ScopedObjectAccess soa(env);
     SetPrimitiveArrayRegion<jlongArray, jlong, LongArray>(soa, array, start, length, buf);
   }
 
-  static void SetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length, const jshort* buf) {
+  static void SetShortArrayRegion(JNIEnv* env, jshortArray array, jsize start, jsize length,
+                                  const jshort* buf) {
     ScopedObjectAccess soa(env);
     SetPrimitiveArrayRegion<jshortArray, jshort, ShortArray>(soa, array, start, length, buf);
   }
 
-  static jint RegisterNatives(JNIEnv* env, jclass java_class, const JNINativeMethod* methods, jint method_count) {
+  static jint RegisterNatives(JNIEnv* env, jclass java_class, const JNINativeMethod* methods,
+                              jint method_count) {
     return RegisterNativeMethods(env, java_class, methods, method_count, true);
   }
 
-  static jint RegisterNativeMethods(JNIEnv* env, jclass java_class, const JNINativeMethod* methods, size_t method_count, bool return_errors) {
+  static jint RegisterNativeMethods(JNIEnv* env, jclass java_class, const JNINativeMethod* methods,
+                                    jint method_count, bool return_errors) {
+    if (UNLIKELY(method_count < 0)) {
+      JniAbortF("RegisterNatives", "method_cound == %d", method_count);
+      return JNI_ERR;  // Not reached.
+    }
+    CHECK_NON_NULL_ARGUMENT(RegisterNatives, java_class);
     ScopedObjectAccess soa(env);
     Class* c = soa.Decode<Class*>(java_class);
-
-    for (size_t i = 0; i < method_count; ++i) {
+    if (UNLIKELY(method_count == 0)) {
+      LOG(WARNING) << "JNI RegisterNativeMethods: attempt to register 0 native methods for "
+          << PrettyDescriptor(c);
+      return JNI_OK;
+    }
+    CHECK_NON_NULL_ARGUMENT(RegisterNatives, methods);
+    for (jint i = 0; i < method_count; ++i) {
       const char* name = methods[i].name;
       const char* sig = methods[i].signature;
 
@@ -2112,13 +2360,13 @@
       }
       if (m == NULL) {
         LOG(return_errors ? ERROR : FATAL) << "Failed to register native method "
-                                           << PrettyDescriptor(c) << "." << name << sig;
+            << PrettyDescriptor(c) << "." << name << sig;
         ThrowNoSuchMethodError(soa, c, name, sig, "static or non-static");
         return JNI_ERR;
       } else if (!m->IsNative()) {
         LOG(return_errors ? ERROR : FATAL) << "Failed to register non-native method "
-                                           << PrettyDescriptor(c) << "." << name << sig
-                                           << " as native";
+            << PrettyDescriptor(c) << "." << name << sig
+            << " as native";
         ThrowNoSuchMethodError(soa, c, name, sig, "native");
         return JNI_ERR;
       }
@@ -2131,6 +2379,7 @@
   }
 
   static jint UnregisterNatives(JNIEnv* env, jclass java_class) {
+    CHECK_NON_NULL_ARGUMENT(UnregisterNatives, java_class);
     ScopedObjectAccess soa(env);
     Class* c = soa.Decode<Class*>(java_class);
 
@@ -2154,6 +2403,7 @@
 
   static jint MonitorEnter(JNIEnv* env, jobject java_object)
       EXCLUSIVE_LOCK_FUNCTION(monitor_lock_) {
+    CHECK_NON_NULL_ARGUMENT(MonitorEnter, java_object);
     ScopedObjectAccess soa(env);
     Object* o = soa.Decode<Object*>(java_object);
     o->MonitorEnter(soa.Self());
@@ -2166,6 +2416,7 @@
 
   static jint MonitorExit(JNIEnv* env, jobject java_object)
       UNLOCK_FUNCTION(monitor_lock_) {
+    CHECK_NON_NULL_ARGUMENT(MonitorExit, java_object);
     ScopedObjectAccess soa(env);
     Object* o = soa.Decode<Object*>(java_object);
     o->MonitorExit(soa.Self());
@@ -2177,6 +2428,7 @@
   }
 
   static jint GetJavaVM(JNIEnv* env, JavaVM** vm) {
+    CHECK_NON_NULL_ARGUMENT(GetJavaVM, vm);
     Runtime* runtime = Runtime::Current();
     if (runtime != NULL) {
       *vm = runtime->GetJavaVM();
@@ -2215,9 +2467,7 @@
   }
 
   static jobjectRefType GetObjectRefType(JNIEnv* env, jobject java_object) {
-    if (java_object == NULL) {
-      JniAbortF("GetObjectRefType", "null object");
-    }
+    CHECK_NON_NULL_ARGUMENT(GetObjectRefType, java_object);
 
     // Do we definitely know what kind of reference this is?
     IndirectRef ref = reinterpret_cast<IndirectRef>(java_object);
@@ -2311,10 +2561,12 @@
   static void GetPrimitiveArrayRegion(ScopedObjectAccess& soa, JavaArrayT java_array,
                                       jsize start, jsize length, JavaT* buf)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+    CHECK_NON_NULL_ARGUMENT(GetPrimitiveArrayRegion, java_array);
     ArrayT* array = soa.Decode<ArrayT*>(java_array);
     if (start < 0 || length < 0 || start + length > array->GetLength()) {
       ThrowAIOOBE(soa, array, start, length, "src");
     } else {
+      CHECK_NON_NULL_ARGUMENT(GetPrimitiveArrayRegion, buf);
       JavaT* data = array->GetData();
       memcpy(buf, data + start, length * sizeof(JavaT));
     }
@@ -2324,10 +2576,12 @@
   static void SetPrimitiveArrayRegion(ScopedObjectAccess& soa, JavaArrayT java_array,
                                       jsize start, jsize length, const JavaT* buf)
       SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
+    CHECK_NON_NULL_ARGUMENT(SetPrimitiveArrayRegion, java_array);
     ArrayT* array = soa.Decode<ArrayT*>(java_array);
     if (start < 0 || length < 0 || start + length > array->GetLength()) {
       ThrowAIOOBE(soa, array, start, length, "dst");
     } else {
+      CHECK_NON_NULL_ARGUMENT(SetPrimitiveArrayRegion, buf);
       JavaT* data = array->GetData();
       memcpy(data + start, buf, length * sizeof(JavaT));
     }
@@ -2969,7 +3223,7 @@
 }
 
 void RegisterNativeMethods(JNIEnv* env, const char* jni_class_name, const JNINativeMethod* methods,
-                           size_t method_count) {
+                           jint method_count) {
   ScopedLocalRef<jclass> c(env, env->FindClass(jni_class_name));
   if (c.get() == NULL) {
     LOG(FATAL) << "Couldn't find class: " << jni_class_name;
diff --git a/runtime/jni_internal.h b/runtime/jni_internal.h
index e3ffc84..f7caa0f 100644
--- a/runtime/jni_internal.h
+++ b/runtime/jni_internal.h
@@ -51,7 +51,7 @@
 void JniAbortF(const char* jni_function_name, const char* fmt, ...)
     __attribute__((__format__(__printf__, 2, 3)));
 void RegisterNativeMethods(JNIEnv* env, const char* jni_class_name, const JNINativeMethod* methods,
-                           size_t method_count);
+                           jint method_count);
 
 JValue InvokeWithJValues(const ScopedObjectAccess&, jobject obj, jmethodID mid, jvalue* args)
     SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
diff --git a/runtime/runtime.cc b/runtime/runtime.cc
index aaae300..c4a9503 100644
--- a/runtime/runtime.cc
+++ b/runtime/runtime.cc
@@ -166,7 +166,7 @@
         ThrowLocation throw_location;
         mirror::Throwable* exception = self->GetException(&throw_location);
         os << "Pending exception " << PrettyTypeOf(exception)
-            << " thrown by '" << throw_location.Dump() << "\n"
+            << " thrown by '" << throw_location.Dump() << "'\n"
             << exception->Dump();
       }
     }
diff --git a/runtime/thread.cc b/runtime/thread.cc
index 48e595f..c4077de 100644
--- a/runtime/thread.cc
+++ b/runtime/thread.cc
@@ -496,6 +496,19 @@
   name.assign(*name_);
 }
 
+uint64_t Thread::GetCpuMicroTime() const {
+#if defined(HAVE_POSIX_CLOCKS)
+  clockid_t cpu_clock_id;
+  pthread_getcpuclockid(pthread_self_, &cpu_clock_id);
+  timespec now;
+  clock_gettime(cpu_clock_id, &now);
+  return static_cast<uint64_t>(now.tv_sec) * 1000000LL + now.tv_nsec / 1000LL;
+#else
+  UNIMPLEMENTED(WARNING);
+  return -1;
+#endif
+}
+
 void Thread::AtomicSetFlag(ThreadFlag flag) {
   android_atomic_or(flag, &state_and_flags_.as_int);
 }
diff --git a/runtime/thread.h b/runtime/thread.h
index b9b93dd..f16695d 100644
--- a/runtime/thread.h
+++ b/runtime/thread.h
@@ -267,6 +267,9 @@
   // Sets the thread's name.
   void SetThreadName(const char* name) SHARED_LOCKS_REQUIRED(Locks::mutator_lock_);
 
+  // Returns the thread-specific CPU-time clock in microseconds or -1 if unavailable.
+  uint64_t GetCpuMicroTime() const;
+
   mirror::Object* GetPeer() const SHARED_LOCKS_REQUIRED(Locks::mutator_lock_) {
     CHECK(jpeer_ == NULL);
     return opeer_;
diff --git a/runtime/throw_location.cc b/runtime/throw_location.cc
index 6d1ca1b..e428511 100644
--- a/runtime/throw_location.cc
+++ b/runtime/throw_location.cc
@@ -25,8 +25,12 @@
 namespace art {
 
 std::string ThrowLocation::Dump() const {
-  return StringPrintf("%s:%d", PrettyMethod(method_).c_str(),
-                      MethodHelper(method_).GetLineNumFromDexPC(dex_pc_));
+  if (method_ != NULL) {
+    return StringPrintf("%s:%d", PrettyMethod(method_).c_str(),
+                        MethodHelper(method_).GetLineNumFromDexPC(dex_pc_));
+  } else {
+    return "unknown throw location";
+  }
 }
 
 void ThrowLocation::VisitRoots(RootVisitor* visitor, void* arg) {
diff --git a/runtime/trace.cc b/runtime/trace.cc
index 5d6943c..5cccd2e 100644
--- a/runtime/trace.cc
+++ b/runtime/trace.cc
@@ -174,7 +174,7 @@
 
 static void MeasureClockOverhead(Trace* trace) {
   if (trace->UseThreadCpuClock()) {
-    ThreadCpuMicroTime();
+    Thread::Current()->GetCpuMicroTime();
   }
   if (trace->UseWallClock()) {
     MicroTime();
@@ -182,7 +182,8 @@
 }
 
 static uint32_t GetClockOverhead(Trace* trace) {
-  uint64_t start = ThreadCpuMicroTime();
+  Thread* self = Thread::Current();
+  uint64_t start = self->GetCpuMicroTime();
 
   for (int i = 4000; i > 0; i--) {
     MeasureClockOverhead(trace);
@@ -195,7 +196,7 @@
     MeasureClockOverhead(trace);
   }
 
-  uint64_t elapsed = ThreadCpuMicroTime() - start;
+  uint64_t elapsed = self->GetCpuMicroTime() - start;
   return uint32_t (elapsed / 32);
 }
 
@@ -582,11 +583,11 @@
     uint32_t thread_clock_diff = 0;
     if (UNLIKELY(it == thread_clock_base_map_.end())) {
       // First event, the diff is 0, record the base time in the map.
-      uint64_t time = ThreadCpuMicroTime();
+      uint64_t time = thread->GetCpuMicroTime();
       thread_clock_base_map_.Put(thread, time);
     } else {
       uint64_t thread_clock_base = it->second;
-      thread_clock_diff = ThreadCpuMicroTime() - thread_clock_base;
+      thread_clock_diff = thread->GetCpuMicroTime() - thread_clock_base;
     }
     Append4LE(ptr, thread_clock_diff);
     ptr += 4;
diff --git a/runtime/utils.cc b/runtime/utils.cc
index 6856bb7..4c17914 100644
--- a/runtime/utils.cc
+++ b/runtime/utils.cc
@@ -164,17 +164,6 @@
 #endif
 }
 
-uint64_t ThreadCpuMicroTime() {
-#if defined(HAVE_POSIX_CLOCKS)
-  timespec now;
-  clock_gettime(CLOCK_THREAD_CPUTIME_ID, &now);
-  return static_cast<uint64_t>(now.tv_sec) * 1000000LL + now.tv_nsec / 1000LL;
-#else
-  UNIMPLEMENTED(WARNING);
-  return -1;
-#endif
-}
-
 uint64_t ThreadCpuNanoTime() {
 #if defined(HAVE_POSIX_CLOCKS)
   timespec now;
diff --git a/runtime/utils.h b/runtime/utils.h
index 9e724d0..bd81114 100644
--- a/runtime/utils.h
+++ b/runtime/utils.h
@@ -285,9 +285,6 @@
 // Returns the monotonic time since some unspecified starting point in nanoseconds.
 uint64_t NanoTime();
 
-// Returns the thread-specific CPU-time clock in microseconds or -1 if unavailable.
-uint64_t ThreadCpuMicroTime();
-
 // Returns the thread-specific CPU-time clock in nanoseconds or -1 if unavailable.
 uint64_t ThreadCpuNanoTime();
 
diff --git a/test/ReferenceMap/stack_walk_refmap_jni.cc b/test/ReferenceMap/stack_walk_refmap_jni.cc
index 1f6e307..180db4c 100644
--- a/test/ReferenceMap/stack_walk_refmap_jni.cc
+++ b/test/ReferenceMap/stack_walk_refmap_jni.cc
@@ -24,6 +24,7 @@
 #include "mirror/art_method-inl.h"
 #include "mirror/class-inl.h"
 #include "mirror/object_array-inl.h"
+#include "mirror/object-inl.h"
 #include "object_utils.h"
 #include "scoped_thread_state_change.h"
 #include "thread.h"