--- a/hotspot/src/cpu/x86/vm/sharedRuntime_x86_64.cpp Wed Feb 01 07:59:01 2012 -0800
+++ b/hotspot/src/cpu/x86/vm/sharedRuntime_x86_64.cpp Wed Feb 01 16:57:08 2012 -0800
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2003, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2003, 2012, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@@ -938,6 +938,25 @@
}
}
+static void move_ptr(MacroAssembler* masm, VMRegPair src, VMRegPair dst) {
+ if (src.first()->is_stack()) {
+ if (dst.first()->is_stack()) {
+ // stack to stack
+ __ movq(rax, Address(rbp, reg2offset_in(src.first())));
+ __ movq(Address(rsp, reg2offset_out(dst.first())), rax);
+ } else {
+ // stack to reg
+ __ movq(dst.first()->as_Register(), Address(rbp, reg2offset_in(src.first())));
+ }
+ } else if (dst.first()->is_stack()) {
+ // reg to stack
+ __ movq(Address(rsp, reg2offset_out(dst.first())), src.first()->as_Register());
+ } else {
+ if (dst.first() != src.first()) {
+ __ movq(dst.first()->as_Register(), src.first()->as_Register());
+ }
+ }
+}
// An oop arg. Must pass a handle not the oop itself
static void object_move(MacroAssembler* masm,
@@ -1152,6 +1171,203 @@
}
}
+
+static void save_or_restore_arguments(MacroAssembler* masm,
+ const int stack_slots,
+ const int total_in_args,
+ const int arg_save_area,
+ OopMap* map,
+ VMRegPair* in_regs,
+ BasicType* in_sig_bt) {
+ // if map is non-NULL then the code should store the values,
+ // otherwise it should load them.
+ int handle_index = 0;
+ // Save down double word first
+ for ( int i = 0; i < total_in_args; i++) {
+ if (in_regs[i].first()->is_XMMRegister() && in_sig_bt[i] == T_DOUBLE) {
+ int slot = handle_index * VMRegImpl::slots_per_word + arg_save_area;
+ int offset = slot * VMRegImpl::stack_slot_size;
+ handle_index += 2;
+ assert(handle_index <= stack_slots, "overflow");
+ if (map != NULL) {
+ __ movdbl(Address(rsp, offset), in_regs[i].first()->as_XMMRegister());
+ } else {
+ __ movdbl(in_regs[i].first()->as_XMMRegister(), Address(rsp, offset));
+ }
+ }
+ if (in_regs[i].first()->is_Register() &&
+ (in_sig_bt[i] == T_LONG || in_sig_bt[i] == T_ARRAY)) {
+ int slot = handle_index * VMRegImpl::slots_per_word + arg_save_area;
+ int offset = slot * VMRegImpl::stack_slot_size;
+ handle_index += 2;
+ assert(handle_index <= stack_slots, "overflow");
+ if (map != NULL) {
+ __ movq(Address(rsp, offset), in_regs[i].first()->as_Register());
+ if (in_sig_bt[i] == T_ARRAY) {
+ map->set_oop(VMRegImpl::stack2reg(slot));;
+ }
+ } else {
+ __ movq(in_regs[i].first()->as_Register(), Address(rsp, offset));
+ }
+ }
+ }
+ // Save or restore single word registers
+ for ( int i = 0; i < total_in_args; i++) {
+ if (in_regs[i].first()->is_Register()) {
+ int slot = handle_index++ * VMRegImpl::slots_per_word + arg_save_area;
+ int offset = slot * VMRegImpl::stack_slot_size;
+ assert(handle_index <= stack_slots, "overflow");
+
+ // Value is in an input register pass we must flush it to the stack
+ const Register reg = in_regs[i].first()->as_Register();
+ switch (in_sig_bt[i]) {
+ case T_BOOLEAN:
+ case T_CHAR:
+ case T_BYTE:
+ case T_SHORT:
+ case T_INT:
+ if (map != NULL) {
+ __ movl(Address(rsp, offset), reg);
+ } else {
+ __ movl(reg, Address(rsp, offset));
+ }
+ break;
+ case T_ARRAY:
+ case T_LONG:
+ // handled above
+ break;
+ case T_OBJECT:
+ default: ShouldNotReachHere();
+ }
+ } else if (in_regs[i].first()->is_XMMRegister()) {
+ if (in_sig_bt[i] == T_FLOAT) {
+ int slot = handle_index++ * VMRegImpl::slots_per_word + arg_save_area;
+ int offset = slot * VMRegImpl::stack_slot_size;
+ assert(handle_index <= stack_slots, "overflow");
+ if (map != NULL) {
+ __ movflt(Address(rsp, offset), in_regs[i].first()->as_XMMRegister());
+ } else {
+ __ movflt(in_regs[i].first()->as_XMMRegister(), Address(rsp, offset));
+ }
+ }
+ } else if (in_regs[i].first()->is_stack()) {
+ if (in_sig_bt[i] == T_ARRAY && map != NULL) {
+ int offset_in_older_frame = in_regs[i].first()->reg2stack() + SharedRuntime::out_preserve_stack_slots();
+ map->set_oop(VMRegImpl::stack2reg(offset_in_older_frame + stack_slots));
+ }
+ }
+ }
+}
+
+
+// Check GC_locker::needs_gc and enter the runtime if it's true. This
+// keeps a new JNI critical region from starting until a GC has been
+// forced. Save down any oops in registers and describe them in an
+// OopMap.
+static void check_needs_gc_for_critical_native(MacroAssembler* masm,
+ int stack_slots,
+ int total_c_args,
+ int total_in_args,
+ int arg_save_area,
+ OopMapSet* oop_maps,
+ VMRegPair* in_regs,
+ BasicType* in_sig_bt) {
+ __ block_comment("check GC_locker::needs_gc");
+ Label cont;
+ __ cmp8(ExternalAddress((address)GC_locker::needs_gc_address()), false);
+ __ jcc(Assembler::equal, cont);
+
+ // Save down any incoming oops and call into the runtime to halt for a GC
+
+ OopMap* map = new OopMap(stack_slots * 2, 0 /* arg_slots*/);
+ save_or_restore_arguments(masm, stack_slots, total_in_args,
+ arg_save_area, map, in_regs, in_sig_bt);
+
+ address the_pc = __ pc();
+ oop_maps->add_gc_map( __ offset(), map);
+ __ set_last_Java_frame(rsp, noreg, the_pc);
+
+ __ block_comment("block_for_jni_critical");
+ __ movptr(c_rarg0, r15_thread);
+ __ mov(r12, rsp); // remember sp
+ __ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
+ __ andptr(rsp, -16); // align stack as required by ABI
+ __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, SharedRuntime::block_for_jni_critical)));
+ __ mov(rsp, r12); // restore sp
+ __ reinit_heapbase();
+
+ __ reset_last_Java_frame(false, true);
+
+ save_or_restore_arguments(masm, stack_slots, total_in_args,
+ arg_save_area, NULL, in_regs, in_sig_bt);
+
+ __ bind(cont);
+#ifdef ASSERT
+ if (StressCriticalJNINatives) {
+ // Stress register saving
+ OopMap* map = new OopMap(stack_slots * 2, 0 /* arg_slots*/);
+ save_or_restore_arguments(masm, stack_slots, total_in_args,
+ arg_save_area, map, in_regs, in_sig_bt);
+ // Destroy argument registers
+ for (int i = 0; i < total_in_args - 1; i++) {
+ if (in_regs[i].first()->is_Register()) {
+ const Register reg = in_regs[i].first()->as_Register();
+ __ xorptr(reg, reg);
+ } else if (in_regs[i].first()->is_XMMRegister()) {
+ __ xorpd(in_regs[i].first()->as_XMMRegister(), in_regs[i].first()->as_XMMRegister());
+ } else if (in_regs[i].first()->is_FloatRegister()) {
+ ShouldNotReachHere();
+ } else if (in_regs[i].first()->is_stack()) {
+ // Nothing to do
+ } else {
+ ShouldNotReachHere();
+ }
+ if (in_sig_bt[i] == T_LONG || in_sig_bt[i] == T_DOUBLE) {
+ i++;
+ }
+ }
+
+ save_or_restore_arguments(masm, stack_slots, total_in_args,
+ arg_save_area, NULL, in_regs, in_sig_bt);
+ }
+#endif
+}
+
+// Unpack an array argument into a pointer to the body and the length
+// if the array is non-null, otherwise pass 0 for both.
+static void unpack_array_argument(MacroAssembler* masm, VMRegPair reg, BasicType in_elem_type, VMRegPair body_arg, VMRegPair length_arg) {
+ Register tmp_reg = rax;
+ assert(!body_arg.first()->is_Register() || body_arg.first()->as_Register() != tmp_reg,
+ "possible collision");
+ assert(!length_arg.first()->is_Register() || length_arg.first()->as_Register() != tmp_reg,
+ "possible collision");
+
+ // Pass the length, ptr pair
+ Label is_null, done;
+ VMRegPair tmp;
+ tmp.set_ptr(tmp_reg->as_VMReg());
+ if (reg.first()->is_stack()) {
+ // Load the arg up from the stack
+ move_ptr(masm, reg, tmp);
+ reg = tmp;
+ }
+ __ testptr(reg.first()->as_Register(), reg.first()->as_Register());
+ __ jccb(Assembler::equal, is_null);
+ __ lea(tmp_reg, Address(reg.first()->as_Register(), arrayOopDesc::base_offset_in_bytes(in_elem_type)));
+ move_ptr(masm, tmp, body_arg);
+ // load the length relative to the body.
+ __ movl(tmp_reg, Address(tmp_reg, arrayOopDesc::length_offset_in_bytes() -
+ arrayOopDesc::base_offset_in_bytes(in_elem_type)));
+ move32_64(masm, tmp, length_arg);
+ __ jmpb(done);
+ __ bind(is_null);
+ // Pass zeros
+ __ xorptr(tmp_reg, tmp_reg);
+ move_ptr(masm, tmp, body_arg);
+ move32_64(masm, tmp, length_arg);
+ __ bind(done);
+}
+
// ---------------------------------------------------------------------------
// Generate a native wrapper for a given method. The method takes arguments
// in the Java compiled code convention, marshals them to the native
@@ -1166,10 +1382,14 @@
BasicType *in_sig_bt,
VMRegPair *in_regs,
BasicType ret_type) {
- // Native nmethod wrappers never take possesion of the oop arguments.
- // So the caller will gc the arguments. The only thing we need an
- // oopMap for is if the call is static
- //
+ bool is_critical_native = true;
+ address native_func = method->critical_native_function();
+ if (native_func == NULL) {
+ native_func = method->native_function();
+ is_critical_native = false;
+ }
+ assert(native_func != NULL, "must have function");
+
// An OopMap for lock (and class if static)
OopMapSet *oop_maps = new OopMapSet();
intptr_t start = (intptr_t)__ pc();
@@ -1180,27 +1400,72 @@
// we convert the java signature to a C signature by inserting
// the hidden arguments as arg[0] and possibly arg[1] (static method)
- int total_c_args = total_in_args + 1;
- if (method->is_static()) {
- total_c_args++;
+ int total_c_args = total_in_args;
+ if (!is_critical_native) {
+ total_c_args += 1;
+ if (method->is_static()) {
+ total_c_args++;
+ }
+ } else {
+ for (int i = 0; i < total_in_args; i++) {
+ if (in_sig_bt[i] == T_ARRAY) {
+ total_c_args++;
+ }
+ }
}
BasicType* out_sig_bt = NEW_RESOURCE_ARRAY(BasicType, total_c_args);
- VMRegPair* out_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_c_args);
+ VMRegPair* out_regs = NEW_RESOURCE_ARRAY(VMRegPair, total_c_args);
+ BasicType* in_elem_bt = NULL;
int argc = 0;
- out_sig_bt[argc++] = T_ADDRESS;
- if (method->is_static()) {
- out_sig_bt[argc++] = T_OBJECT;
- }
-
- for (int i = 0; i < total_in_args ; i++ ) {
- out_sig_bt[argc++] = in_sig_bt[i];
+ if (!is_critical_native) {
+ out_sig_bt[argc++] = T_ADDRESS;
+ if (method->is_static()) {
+ out_sig_bt[argc++] = T_OBJECT;
+ }
+
+ for (int i = 0; i < total_in_args ; i++ ) {
+ out_sig_bt[argc++] = in_sig_bt[i];
+ }
+ } else {
+ Thread* THREAD = Thread::current();
+ in_elem_bt = NEW_RESOURCE_ARRAY(BasicType, total_in_args);
+ SignatureStream ss(method->signature());
+ for (int i = 0; i < total_in_args ; i++ ) {
+ if (in_sig_bt[i] == T_ARRAY) {
+ // Arrays are passed as int, elem* pair
+ out_sig_bt[argc++] = T_INT;
+ out_sig_bt[argc++] = T_ADDRESS;
+ Symbol* atype = ss.as_symbol(CHECK_NULL);
+ const char* at = atype->as_C_string();
+ if (strlen(at) == 2) {
+ assert(at[0] == '[', "must be");
+ switch (at[1]) {
+ case 'B': in_elem_bt[i] = T_BYTE; break;
+ case 'C': in_elem_bt[i] = T_CHAR; break;
+ case 'D': in_elem_bt[i] = T_DOUBLE; break;
+ case 'F': in_elem_bt[i] = T_FLOAT; break;
+ case 'I': in_elem_bt[i] = T_INT; break;
+ case 'J': in_elem_bt[i] = T_LONG; break;
+ case 'S': in_elem_bt[i] = T_SHORT; break;
+ case 'Z': in_elem_bt[i] = T_BOOLEAN; break;
+ default: ShouldNotReachHere();
+ }
+ }
+ } else {
+ out_sig_bt[argc++] = in_sig_bt[i];
+ in_elem_bt[i] = T_VOID;
+ }
+ if (in_sig_bt[i] != T_VOID) {
+ assert(in_sig_bt[i] == ss.type(), "must match");
+ ss.next();
+ }
+ }
}
// Now figure out where the args must be stored and how much stack space
// they require.
- //
int out_arg_slots;
out_arg_slots = c_calling_convention(out_sig_bt, out_regs, total_c_args);
@@ -1213,13 +1478,47 @@
int stack_slots = SharedRuntime::out_preserve_stack_slots() + out_arg_slots;
// Now the space for the inbound oop handle area
+ int total_save_slots = 6 * VMRegImpl::slots_per_word; // 6 arguments passed in registers
+ if (is_critical_native) {
+ // Critical natives may have to call out so they need a save area
+ // for register arguments.
+ int double_slots = 0;
+ int single_slots = 0;
+ for ( int i = 0; i < total_in_args; i++) {
+ if (in_regs[i].first()->is_Register()) {
+ const Register reg = in_regs[i].first()->as_Register();
+ switch (in_sig_bt[i]) {
+ case T_ARRAY:
+ case T_BOOLEAN:
+ case T_BYTE:
+ case T_SHORT:
+ case T_CHAR:
+ case T_INT: single_slots++; break;
+ case T_LONG: double_slots++; break;
+ default: ShouldNotReachHere();
+ }
+ } else if (in_regs[i].first()->is_XMMRegister()) {
+ switch (in_sig_bt[i]) {
+ case T_FLOAT: single_slots++; break;
+ case T_DOUBLE: double_slots++; break;
+ default: ShouldNotReachHere();
+ }
+ } else if (in_regs[i].first()->is_FloatRegister()) {
+ ShouldNotReachHere();
+ }
+ }
+ total_save_slots = double_slots * 2 + single_slots;
+ // align the save area
+ if (double_slots != 0) {
+ stack_slots = round_to(stack_slots, 2);
+ }
+ }
int oop_handle_offset = stack_slots;
- stack_slots += 6*VMRegImpl::slots_per_word;
+ stack_slots += total_save_slots;
// Now any space we need for handlizing a klass if static method
- int oop_temp_slot_offset = 0;
int klass_slot_offset = 0;
int klass_offset = -1;
int lock_slot_offset = 0;
@@ -1272,7 +1571,6 @@
int stack_size = stack_slots * VMRegImpl::stack_slot_size;
-
// First thing make an ic check to see if we should even be here
// We are free to use all registers as temps without saving them and
@@ -1283,22 +1581,22 @@
const Register ic_reg = rax;
const Register receiver = j_rarg0;
- Label ok;
+ Label hit;
Label exception_pending;
assert_different_registers(ic_reg, receiver, rscratch1);
__ verify_oop(receiver);
__ load_klass(rscratch1, receiver);
__ cmpq(ic_reg, rscratch1);
- __ jcc(Assembler::equal, ok);
+ __ jcc(Assembler::equal, hit);
__ jump(RuntimeAddress(SharedRuntime::get_ic_miss_stub()));
- __ bind(ok);
-
// Verified entry point must be aligned
__ align(8);
+ __ bind(hit);
+
int vep_offset = ((intptr_t)__ pc()) - start;
// The instruction at the verified entry point must be 5 bytes or longer
@@ -1319,9 +1617,8 @@
// -2 because return address is already present and so is saved rbp
__ subptr(rsp, stack_size - 2*wordSize);
- // Frame is now completed as far as size and linkage.
-
- int frame_complete = ((intptr_t)__ pc()) - start;
+ // Frame is now completed as far as size and linkage.
+ int frame_complete = ((intptr_t)__ pc()) - start;
#ifdef ASSERT
{
@@ -1341,7 +1638,10 @@
const Register oop_handle_reg = r14;
-
+ if (is_critical_native) {
+ check_needs_gc_for_critical_native(masm, stack_slots, total_c_args, total_in_args,
+ oop_handle_offset, oop_maps, in_regs, in_sig_bt);
+ }
//
// We immediately shuffle the arguments so that any vm call we have to
@@ -1390,9 +1690,36 @@
#endif /* ASSERT */
-
+ if (is_critical_native) {
+ // The mapping of Java and C arguments passed in registers are
+ // rotated by one, which helps when passing arguments to regular
+ // Java method but for critical natives that creates a cycle which
+ // can cause arguments to be killed before they are used. Break
+ // the cycle by moving the first argument into a temporary
+ // register.
+ for (int i = 0; i < total_c_args; i++) {
+ if (in_regs[i].first()->is_Register() &&
+ in_regs[i].first()->as_Register() == rdi) {
+ __ mov(rbx, rdi);
+ in_regs[i].set1(rbx->as_VMReg());
+ }
+ }
+ }
+
+ // This may iterate in two different directions depending on the
+ // kind of native it is. The reason is that for regular JNI natives
+ // the incoming and outgoing registers are offset upwards and for
+ // critical natives they are offset down.
int c_arg = total_c_args - 1;
- for ( int i = total_in_args - 1; i >= 0 ; i--, c_arg-- ) {
+ int stride = -1;
+ int init = total_in_args - 1;
+ if (is_critical_native) {
+ // stride forwards
+ c_arg = 0;
+ stride = 1;
+ init = 0;
+ }
+ for (int i = init, count = 0; count < total_in_args; i += stride, c_arg += stride, count++ ) {
#ifdef ASSERT
if (in_regs[i].first()->is_Register()) {
assert(!reg_destroyed[in_regs[i].first()->as_Register()->encoding()], "destroyed reg!");
@@ -1407,7 +1734,20 @@
#endif /* ASSERT */
switch (in_sig_bt[i]) {
case T_ARRAY:
+ if (is_critical_native) {
+ unpack_array_argument(masm, in_regs[i], in_elem_bt[i], out_regs[c_arg + 1], out_regs[c_arg]);
+ c_arg++;
+#ifdef ASSERT
+ if (out_regs[c_arg].first()->is_Register()) {
+ reg_destroyed[out_regs[c_arg].first()->as_Register()->encoding()] = true;
+ } else if (out_regs[c_arg].first()->is_XMMRegister()) {
+ freg_destroyed[out_regs[c_arg].first()->as_XMMRegister()->encoding()] = true;
+ }
+#endif
+ break;
+ }
case T_OBJECT:
+ assert(!is_critical_native, "no oop arguments");
object_move(masm, map, oop_handle_offset, stack_slots, in_regs[i], out_regs[c_arg],
((i == 0) && (!is_static)),
&receiver_offset);
@@ -1443,7 +1783,7 @@
// Pre-load a static method's oop into r14. Used both by locking code and
// the normal JNI call code.
- if (method->is_static()) {
+ if (method->is_static() && !is_critical_native) {
// load oop into a register
__ movoop(oop_handle_reg, JNIHandles::make_local(Klass::cast(method->method_holder())->java_mirror()));
@@ -1509,6 +1849,7 @@
Label lock_done;
if (method->is_synchronized()) {
+ assert(!is_critical_native, "unhandled");
const int mark_word_offset = BasicLock::displaced_header_offset_in_bytes();
@@ -1572,13 +1913,14 @@
// get JNIEnv* which is first argument to native
-
- __ lea(c_rarg0, Address(r15_thread, in_bytes(JavaThread::jni_environment_offset())));
+ if (!is_critical_native) {
+ __ lea(c_rarg0, Address(r15_thread, in_bytes(JavaThread::jni_environment_offset())));
+ }
// Now set thread in native
__ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_native);
- __ call(RuntimeAddress(method->native_function()));
+ __ call(RuntimeAddress(native_func));
// Either restore the MXCSR register after returning from the JNI Call
// or verify that it wasn't changed.
@@ -1634,6 +1976,7 @@
}
}
+ Label after_transition;
// check for safepoint operation in progress and/or pending suspend requests
{
@@ -1659,16 +2002,28 @@
__ mov(r12, rsp); // remember sp
__ subptr(rsp, frame::arg_reg_save_area_bytes); // windows
__ andptr(rsp, -16); // align stack as required by ABI
- __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans)));
+ if (!is_critical_native) {
+ __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans)));
+ } else {
+ __ call(RuntimeAddress(CAST_FROM_FN_PTR(address, JavaThread::check_special_condition_for_native_trans_and_transition)));
+ }
__ mov(rsp, r12); // restore sp
__ reinit_heapbase();
// Restore any method result value
restore_native_result(masm, ret_type, stack_slots);
+
+ if (is_critical_native) {
+ // The call above performed the transition to thread_in_Java so
+ // skip the transition logic below.
+ __ jmpb(after_transition);
+ }
+
__ bind(Continue);
}
// change thread state
__ movl(Address(r15_thread, JavaThread::thread_state_offset()), _thread_in_Java);
+ __ bind(after_transition);
Label reguard;
Label reguard_done;
@@ -1746,17 +2101,21 @@
__ verify_oop(rax);
}
- // reset handle block
- __ movptr(rcx, Address(r15_thread, JavaThread::active_handles_offset()));
- __ movptr(Address(rcx, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD);
+ if (!is_critical_native) {
+ // reset handle block
+ __ movptr(rcx, Address(r15_thread, JavaThread::active_handles_offset()));
+ __ movptr(Address(rcx, JNIHandleBlock::top_offset_in_bytes()), (int32_t)NULL_WORD);
+ }
// pop our frame
__ leave();
- // Any exception pending?
- __ cmpptr(Address(r15_thread, in_bytes(Thread::pending_exception_offset())), (int32_t)NULL_WORD);
- __ jcc(Assembler::notEqual, exception_pending);
+ if (!is_critical_native) {
+ // Any exception pending?
+ __ cmpptr(Address(r15_thread, in_bytes(Thread::pending_exception_offset())), (int32_t)NULL_WORD);
+ __ jcc(Assembler::notEqual, exception_pending);
+ }
// Return
@@ -1764,12 +2123,13 @@
// Unexpected paths are out of line and go here
- // forward the exception
- __ bind(exception_pending);
-
- // and forward the exception
- __ jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
-
+ if (!is_critical_native) {
+ // forward the exception
+ __ bind(exception_pending);
+
+ // and forward the exception
+ __ jump(RuntimeAddress(StubRoutines::forward_exception_entry()));
+ }
// Slow path locking & unlocking
if (method->is_synchronized()) {
@@ -1876,6 +2236,11 @@
(is_static ? in_ByteSize(klass_offset) : in_ByteSize(receiver_offset)),
in_ByteSize(lock_slot_offset*VMRegImpl::stack_slot_size),
oop_maps);
+
+ if (is_critical_native) {
+ nm->set_lazy_critical_native(true);
+ }
+
return nm;
}