# HG changeset patch
# User never
# Date 1310769350 25200
# Node ID e81ae8b523dc38f9e8f66d8eb469331cf0e8a66b
# Parent  5f7e29996174b9dc7e8ebe53b1503b44ed32dc2a
6990212: JSR 292 JVMTI MethodEnter hook is not called for JSR 292 bootstrap and target methods
Summary: check for single stepping when dispatching invokes from method handles
Reviewed-by: coleenp, twisti, kvn, dsamersoff

diff -r 5f7e29996174 -r e81ae8b523dc hotspot/src/cpu/sparc/vm/methodHandles_sparc.cpp
--- a/hotspot/src/cpu/sparc/vm/methodHandles_sparc.cpp	Thu Jul 14 15:39:40 2011 -0700
+++ b/hotspot/src/cpu/sparc/vm/methodHandles_sparc.cpp	Fri Jul 15 15:35:50 2011 -0700
@@ -524,6 +524,30 @@
 }
 #endif // ASSERT
 
+
+void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register target, Register temp) {
+  assert(method == G5_method, "interpreter calling convention");
+  __ verify_oop(method);
+  __ ld_ptr(G5_method, in_bytes(methodOopDesc::from_interpreted_offset()), target);
+  if (JvmtiExport::can_post_interpreter_events()) {
+    // JVMTI events, such as single-stepping, are implemented partly by avoiding running
+    // compiled code in threads for which the event is enabled.  Check here for
+    // interp_only_mode if these events CAN be enabled.
+    __ verify_thread();
+    Label skip_compiled_code;
+
+    const Address interp_only(G2_thread, JavaThread::interp_only_mode_offset());
+    __ ld(interp_only, temp);
+    __ tst(temp);
+    __ br(Assembler::notZero, true, Assembler::pn, skip_compiled_code);
+    __ delayed()->ld_ptr(G5_method, in_bytes(methodOopDesc::interpreter_entry_offset()), target);
+    __ bind(skip_compiled_code);
+  }
+  __ jmp(target, 0);
+  __ delayed()->nop();
+}
+
+
 // Code generation
 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
   // I5_savedSP/O5_savedSP: sender SP (must preserve)
@@ -1105,9 +1129,6 @@
   guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
 
   // Some handy addresses:
-  Address G5_method_fie(    G5_method,        in_bytes(methodOopDesc::from_interpreted_offset()));
-  Address G5_method_fce(    G5_method,        in_bytes(methodOopDesc::from_compiled_offset()));
-
   Address G3_mh_vmtarget(   G3_method_handle, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes());
 
   Address G3_dmh_vmindex(   G3_method_handle, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes());
@@ -1136,24 +1157,23 @@
   case _raise_exception:
     {
       // Not a real MH entry, but rather shared code for raising an
-      // exception.  Since we use the compiled entry, arguments are
-      // expected in compiler argument registers.
+      // exception.  For sharing purposes the arguments are passed into registers
+      // and then placed in the intepreter calling convention here.
       assert(raise_exception_method(), "must be set");
       assert(raise_exception_method()->from_compiled_entry(), "method must be linked");
 
-      __ mov(O5_savedSP, SP);  // Cut the stack back to where the caller started.
-
-      Label L_no_method;
-      // FIXME: fill in _raise_exception_method with a suitable java.lang.invoke method
       __ set(AddressLiteral((address) &_raise_exception_method), G5_method);
       __ ld_ptr(Address(G5_method, 0), G5_method);
 
       const int jobject_oop_offset = 0;
       __ ld_ptr(Address(G5_method, jobject_oop_offset), G5_method);
 
-      __ verify_oop(G5_method);
-      __ jump_indirect_to(G5_method_fce, O3_scratch);  // jump to compiled entry
-      __ delayed()->nop();
+      adjust_SP_and_Gargs_down_by_slots(_masm, 3, noreg, noreg);
+
+      __ st_ptr(O0_code,     __ argument_address(constant(2), noreg, 0));
+      __ st_ptr(O1_actual,   __ argument_address(constant(1), noreg, 0));
+      __ st_ptr(O2_required, __ argument_address(constant(0), noreg, 0));
+      jump_from_method_handle(_masm, G5_method, O1_scratch, O2_scratch);
     }
     break;
 
@@ -1161,7 +1181,6 @@
   case _invokespecial_mh:
     {
       __ load_heap_oop(G3_mh_vmtarget, G5_method);  // target is a methodOop
-      __ verify_oop(G5_method);
       // Same as TemplateTable::invokestatic or invokespecial,
       // minus the CP setup and profiling:
       if (ek == _invokespecial_mh) {
@@ -1171,8 +1190,7 @@
         __ null_check(G3_method_handle);
         __ verify_oop(G3_method_handle);
       }
-      __ jump_indirect_to(G5_method_fie, O1_scratch);
-      __ delayed()->nop();
+      jump_from_method_handle(_masm, G5_method, O1_scratch, O2_scratch);
     }
     break;
 
@@ -1204,9 +1222,7 @@
       Address vtable_entry_addr(O0_klass, base + vtableEntry::method_offset_in_bytes());
       __ ld_ptr(vtable_entry_addr, G5_method);
 
-      __ verify_oop(G5_method);
-      __ jump_indirect_to(G5_method_fie, O1_scratch);
-      __ delayed()->nop();
+      jump_from_method_handle(_masm, G5_method, O1_scratch, O2_scratch);
     }
     break;
 
@@ -1237,9 +1253,7 @@
                                  O3_scratch,
                                  no_such_interface);
 
-      __ verify_oop(G5_method);
-      __ jump_indirect_to(G5_method_fie, O1_scratch);
-      __ delayed()->nop();
+      jump_from_method_handle(_masm, G5_method, O1_scratch, O2_scratch);
 
       __ bind(no_such_interface);
       // Throw an exception.
@@ -1283,9 +1297,7 @@
 
       if (direct_to_method) {
         __ load_heap_oop(G3_mh_vmtarget, G5_method);  // target is a methodOop
-        __ verify_oop(G5_method);
-        __ jump_indirect_to(G5_method_fie, O1_scratch);
-        __ delayed()->nop();
+        jump_from_method_handle(_masm, G5_method, O1_scratch, O2_scratch);
       } else {
         __ load_heap_oop(G3_mh_vmtarget, G3_method_handle);  // target is a methodOop
         __ verify_oop(G3_method_handle);
diff -r 5f7e29996174 -r e81ae8b523dc hotspot/src/cpu/sparc/vm/methodHandles_sparc.hpp
--- a/hotspot/src/cpu/sparc/vm/methodHandles_sparc.hpp	Thu Jul 14 15:39:40 2011 -0700
+++ b/hotspot/src/cpu/sparc/vm/methodHandles_sparc.hpp	Fri Jul 15 15:35:50 2011 -0700
@@ -221,4 +221,8 @@
                  "reference is a MH");
   }
 
+  // Similar to InterpreterMacroAssembler::jump_from_interpreted.
+  // Takes care of special dispatch from single stepping too.
+  static void jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp, Register temp2);
+
   static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN;
diff -r 5f7e29996174 -r e81ae8b523dc hotspot/src/cpu/x86/vm/interp_masm_x86_32.cpp
--- a/hotspot/src/cpu/x86/vm/interp_masm_x86_32.cpp	Thu Jul 14 15:39:40 2011 -0700
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86_32.cpp	Fri Jul 15 15:35:50 2011 -0700
@@ -403,9 +403,9 @@
     // interp_only_mode if these events CAN be enabled.
     get_thread(temp);
     // interp_only is an int, on little endian it is sufficient to test the byte only
-    // Is a cmpl faster (ce
+    // Is a cmpl faster?
     cmpb(Address(temp, JavaThread::interp_only_mode_offset()), 0);
-    jcc(Assembler::zero, run_compiled_code);
+    jccb(Assembler::zero, run_compiled_code);
     jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
     bind(run_compiled_code);
   }
diff -r 5f7e29996174 -r e81ae8b523dc hotspot/src/cpu/x86/vm/interp_masm_x86_64.cpp
--- a/hotspot/src/cpu/x86/vm/interp_masm_x86_64.cpp	Thu Jul 14 15:39:40 2011 -0700
+++ b/hotspot/src/cpu/x86/vm/interp_masm_x86_64.cpp	Fri Jul 15 15:35:50 2011 -0700
@@ -402,7 +402,7 @@
     // interp_only is an int, on little endian it is sufficient to test the byte only
     // Is a cmpl faster?
     cmpb(Address(r15_thread, JavaThread::interp_only_mode_offset()), 0);
-    jcc(Assembler::zero, run_compiled_code);
+    jccb(Assembler::zero, run_compiled_code);
     jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
     bind(run_compiled_code);
   }
diff -r 5f7e29996174 -r e81ae8b523dc hotspot/src/cpu/x86/vm/methodHandles_x86.cpp
--- a/hotspot/src/cpu/x86/vm/methodHandles_x86.cpp	Thu Jul 14 15:39:40 2011 -0700
+++ b/hotspot/src/cpu/x86/vm/methodHandles_x86.cpp	Fri Jul 15 15:35:50 2011 -0700
@@ -546,6 +546,28 @@
 }
 #endif //ASSERT
 
+void MethodHandles::jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp) {
+  if (JvmtiExport::can_post_interpreter_events()) {
+    Label run_compiled_code;
+    // JVMTI events, such as single-stepping, are implemented partly by avoiding running
+    // compiled code in threads for which the event is enabled.  Check here for
+    // interp_only_mode if these events CAN be enabled.
+#ifdef _LP64
+    Register rthread = r15_thread;
+#else
+    Register rthread = temp;
+    __ get_thread(rthread);
+#endif
+    // interp_only is an int, on little endian it is sufficient to test the byte only
+    // Is a cmpl faster?
+    __ cmpb(Address(rthread, JavaThread::interp_only_mode_offset()), 0);
+    __ jccb(Assembler::zero, run_compiled_code);
+    __ jmp(Address(method, methodOopDesc::interpreter_entry_offset()));
+    __ bind(run_compiled_code);
+  }
+  __ jmp(Address(method, methodOopDesc::from_interpreted_offset()));
+}
+
 // Code generation
 address MethodHandles::generate_method_handle_interpreter_entry(MacroAssembler* _masm) {
   // rbx: methodOop
@@ -1120,9 +1142,6 @@
   guarantee(java_lang_invoke_MethodHandle::vmentry_offset_in_bytes() != 0, "must have offsets");
 
   // some handy addresses
-  Address rbx_method_fie(     rbx,      methodOopDesc::from_interpreted_offset() );
-  Address rbx_method_fce(     rbx,      methodOopDesc::from_compiled_offset() );
-
   Address rcx_mh_vmtarget(    rcx_recv, java_lang_invoke_MethodHandle::vmtarget_offset_in_bytes() );
   Address rcx_dmh_vmindex(    rcx_recv, java_lang_invoke_DirectMethodHandle::vmindex_offset_in_bytes() );
 
@@ -1163,8 +1182,8 @@
       assert(raise_exception_method(), "must be set");
       assert(raise_exception_method()->from_compiled_entry(), "method must be linked");
 
-      const Register rdi_pc = rax;
-      __ pop(rdi_pc);  // caller PC
+      const Register rax_pc = rax;
+      __ pop(rax_pc);  // caller PC
       __ mov(rsp, saved_last_sp);  // cut the stack back to where the caller started
 
       Register rbx_method = rbx_temp;
@@ -1172,11 +1191,15 @@
 
       const int jobject_oop_offset = 0;
       __ movptr(rbx_method, Address(rbx_method, jobject_oop_offset));  // dereference the jobject
-      __ verify_oop(rbx_method);
+
+      __ movptr(rsi, rsp);
+      __ subptr(rsp, 3 * wordSize);
+      __ push(rax_pc);         // restore caller PC
 
-      NOT_LP64(__ push(rarg2_required));
-      __ push(rdi_pc);         // restore caller PC
-      __ jmp(rbx_method_fce);  // jump to compiled entry
+      __ movptr(__ argument_address(constant(2)), rarg0_code);
+      __ movptr(__ argument_address(constant(1)), rarg1_actual);
+      __ movptr(__ argument_address(constant(0)), rarg2_required);
+      jump_from_method_handle(_masm, rbx_method, rax);
     }
     break;
 
@@ -1195,7 +1218,7 @@
         __ null_check(rcx_recv);
         __ verify_oop(rcx_recv);
       }
-      __ jmp(rbx_method_fie);
+      jump_from_method_handle(_masm, rbx_method, rax);
     }
     break;
 
@@ -1228,7 +1251,7 @@
       __ movptr(rbx_method, vtable_entry_addr);
 
       __ verify_oop(rbx_method);
-      __ jmp(rbx_method_fie);
+      jump_from_method_handle(_masm, rbx_method, rax);
     }
     break;
 
@@ -1263,7 +1286,7 @@
                                  no_such_interface);
 
       __ verify_oop(rbx_method);
-      __ jmp(rbx_method_fie);
+      jump_from_method_handle(_masm, rbx_method, rax);
       __ hlt();
 
       __ bind(no_such_interface);
@@ -1311,7 +1334,7 @@
         Register rbx_method = rbx_temp;
         __ load_heap_oop(rbx_method, rcx_mh_vmtarget);
         __ verify_oop(rbx_method);
-        __ jmp(rbx_method_fie);
+        jump_from_method_handle(_masm, rbx_method, rax);
       } else {
         __ load_heap_oop(rcx_recv, rcx_mh_vmtarget);
         __ verify_oop(rcx_recv);
diff -r 5f7e29996174 -r e81ae8b523dc hotspot/src/cpu/x86/vm/methodHandles_x86.hpp
--- a/hotspot/src/cpu/x86/vm/methodHandles_x86.hpp	Thu Jul 14 15:39:40 2011 -0700
+++ b/hotspot/src/cpu/x86/vm/methodHandles_x86.hpp	Fri Jul 15 15:35:50 2011 -0700
@@ -291,6 +291,10 @@
                  "reference is a MH");
   }
 
+  // Similar to InterpreterMacroAssembler::jump_from_interpreted.
+  // Takes care of special dispatch from single stepping too.
+  static void jump_from_method_handle(MacroAssembler* _masm, Register method, Register temp);
+
   static void trace_method_handle(MacroAssembler* _masm, const char* adaptername) PRODUCT_RETURN;
 
   static Register saved_last_sp_register() {
diff -r 5f7e29996174 -r e81ae8b523dc hotspot/test/compiler/6990212/Test6990212.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/6990212/Test6990212.java	Fri Jul 15 15:35:50 2011 -0700
@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2011, 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
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ *
+ */
+
+/**
+ * @test
+ * @bug 6990212
+ * @summary JSR 292 JVMTI MethodEnter hook is not called for JSR 292 bootstrap and target methods
+ *
+ * @run main Test6990212
+ */
+
+import java.lang.invoke.*;
+
+interface intf {
+    public Object target();
+}
+
+public class Test6990212 implements intf {
+    public Object target() {
+        return null;
+    }
+
+    public static void main(String[] args) throws Throwable {
+        // Build an interface invoke and then invoke it on something
+        // that doesn't implement the interface to test the
+        // raiseException path.
+        MethodHandle target = MethodHandles.lookup().findVirtual(intf.class, "target",  MethodType.methodType(Object.class));
+        try {
+            target.invoke(new Object());
+        } catch (ClassCastException cce) {
+            // everything is ok
+            System.out.println("got expected ClassCastException");
+        }
+    }
+}