--- a/hotspot/src/cpu/sparc/vm/methodHandles_sparc.cpp	Tue Oct 12 02:21:06 2010 -0700
+++ b/hotspot/src/cpu/sparc/vm/methodHandles_sparc.cpp	Wed Oct 13 01:19:43 2010 -0700
@@ -27,6 +27,14 @@
 
 #define __ _masm->
 
+#ifdef PRODUCT
+#define BLOCK_COMMENT(str) /* nothing */
+#else
+#define BLOCK_COMMENT(str) __ block_comment(str)
+#endif
+
+#define BIND(label) bind(label); BLOCK_COMMENT(#label ":")
+
 address MethodHandleEntry::start_compiled_entry(MacroAssembler* _masm,
                                                 address interpreted_entry) {
   // Just before the actual machine code entry point, allocate space
@@ -105,6 +113,7 @@
 static void verify_argslot(MacroAssembler* _masm, Register argslot_reg, Register temp_reg, const char* error_message) {
   // Verify that argslot lies within (Gargs, FP].
   Label L_ok, L_bad;
+  BLOCK_COMMENT("{ verify_argslot");
 #ifdef _LP64
   __ add(FP, STACK_BIAS, temp_reg);
   __ cmp(argslot_reg, temp_reg);
@@ -119,6 +128,7 @@
   __ bind(L_bad);
   __ stop(error_message);
   __ bind(L_ok);
+  BLOCK_COMMENT("} verify_argslot");
 }
 #endif
 
@@ -175,6 +185,7 @@
   //   for (temp = sp + size; temp < argslot; temp++)
   //     temp[-size] = temp[0]
   //   argslot -= size;
+  BLOCK_COMMENT("insert_arg_slots {");
   RegisterOrConstant offset = __ regcon_sll_ptr(arg_slots, LogBytesPerWord, temp3_reg);
 
   // Keep the stack pointer 2*wordSize aligned.
@@ -187,7 +198,7 @@
 
   {
     Label loop;
-    __ bind(loop);
+    __ BIND(loop);
     // pull one word down each time through the loop
     __ ld_ptr(Address(temp_reg, 0), temp2_reg);
     __ st_ptr(temp2_reg, Address(temp_reg, offset));
@@ -199,6 +210,7 @@
 
   // Now move the argslot down, to point to the opened-up space.
   __ add(argslot_reg, offset, argslot_reg);
+  BLOCK_COMMENT("} insert_arg_slots");
 }
 
 
@@ -235,6 +247,7 @@
   }
 #endif // ASSERT
 
+  BLOCK_COMMENT("remove_arg_slots {");
   // Pull up everything shallower than argslot.
   // Then remove the excess space on the stack.
   // The stacked return address gets pulled up with everything else.
@@ -246,7 +259,7 @@
   __ sub(argslot_reg, wordSize, temp_reg);  // source pointer for copy
   {
     Label loop;
-    __ bind(loop);
+    __ BIND(loop);
     // pull one word up each time through the loop
     __ ld_ptr(Address(temp_reg, 0), temp2_reg);
     __ st_ptr(temp2_reg, Address(temp_reg, offset));
@@ -265,29 +278,35 @@
   const int TwoWordAlignmentMask = right_n_bits(LogBytesPerWord + 1);
   RegisterOrConstant masked_offset = __ regcon_andn_ptr(offset, TwoWordAlignmentMask, temp_reg);
   __ add(SP, masked_offset, SP);
+  BLOCK_COMMENT("} remove_arg_slots");
 }
 
 
 #ifndef PRODUCT
 extern "C" void print_method_handle(oop mh);
 void trace_method_handle_stub(const char* adaptername,
-                              oop mh) {
-#if 0
-                              intptr_t* entry_sp,
-                              intptr_t* saved_sp,
-                              intptr_t* saved_bp) {
-  // called as a leaf from native code: do not block the JVM!
-  intptr_t* last_sp = (intptr_t*) saved_bp[frame::interpreter_frame_last_sp_offset];
-  intptr_t* base_sp = (intptr_t*) saved_bp[frame::interpreter_frame_monitor_block_top_offset];
-  printf("MH %s mh="INTPTR_FORMAT" sp=("INTPTR_FORMAT"+"INTX_FORMAT") stack_size="INTX_FORMAT" bp="INTPTR_FORMAT"\n",
-         adaptername, (intptr_t)mh, (intptr_t)entry_sp, (intptr_t)(saved_sp - entry_sp), (intptr_t)(base_sp - last_sp), (intptr_t)saved_bp);
-  if (last_sp != saved_sp)
-    printf("*** last_sp="INTPTR_FORMAT"\n", (intptr_t)last_sp);
-#endif
-
+                              oopDesc* mh) {
   printf("MH %s mh="INTPTR_FORMAT"\n", adaptername, (intptr_t) mh);
   print_method_handle(mh);
 }
+void MethodHandles::trace_method_handle(MacroAssembler* _masm, const char* adaptername) {
+  if (!TraceMethodHandles)  return;
+  BLOCK_COMMENT("trace_method_handle {");
+  // save: Gargs, O5_savedSP
+  __ save_frame(16);
+  __ set((intptr_t) adaptername, O0);
+  __ mov(G3_method_handle, O1);
+  __ mov(G3_method_handle, L3);
+  __ mov(Gargs, L4);
+  __ mov(G5_method_type, L5);
+  __ call_VM_leaf(L7, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
+
+  __ mov(L3, G3_method_handle);
+  __ mov(L4, Gargs);
+  __ mov(L5, G5_method_type);
+  __ restore();
+  BLOCK_COMMENT("} trace_method_handle");
+}
 #endif // PRODUCT
 
 // which conversion op types are implemented here?
@@ -349,16 +368,7 @@
 
   address interp_entry = __ pc();
 
-#ifndef PRODUCT
-  if (TraceMethodHandles) {
-    // save: Gargs, O5_savedSP
-    __ save(SP, -16*wordSize, SP);
-    __ set((intptr_t) entry_name(ek), O0);
-    __ mov(G3_method_handle, O1);
-    __ call_VM_leaf(Lscratch, CAST_FROM_FN_PTR(address, trace_method_handle_stub));
-    __ restore(SP, 16*wordSize, SP);
-  }
-#endif // PRODUCT
+  trace_method_handle(_masm, entry_name(ek));
 
   switch ((int) ek) {
   case _raise_exception:

--- a/hotspot/src/share/vm/prims/methodHandles.cpp	Tue Oct 12 02:21:06 2010 -0700
+++ b/hotspot/src/share/vm/prims/methodHandles.cpp	Wed Oct 13 01:19:43 2010 -0700
@@ -1568,7 +1568,7 @@
     if (ptype != T_INT) {
       int value_offset = java_lang_boxing_object::value_offset_in_bytes(T_INT);
       jint value = argument->int_field(value_offset);
-      int vminfo = adapter_subword_vminfo(ptype);
+      int vminfo = adapter_unbox_subword_vminfo(ptype);
       jint subword = truncate_subword_from_vminfo(value, vminfo);
       if (value != subword) {
         err = "bound subword value does not fit into the subword type";
@@ -2018,12 +2018,12 @@
         assert(src == T_INT || is_subword_type(src), "source is not float");
         // Subword-related cases are int -> {boolean,byte,char,short}.
         ek_opt = _adapter_opt_i2i;
-        vminfo = adapter_subword_vminfo(dest);
+        vminfo = adapter_prim_to_prim_subword_vminfo(dest);
         break;
       case 2 *4+ 1:
         if (src == T_LONG && (dest == T_INT || is_subword_type(dest))) {
           ek_opt = _adapter_opt_l2i;
-          vminfo = adapter_subword_vminfo(dest);
+          vminfo = adapter_prim_to_prim_subword_vminfo(dest);
         } else if (src == T_DOUBLE && dest == T_FLOAT) {
           ek_opt = _adapter_opt_d2f;
         } else {
@@ -2051,7 +2051,7 @@
       switch (type2size[dest]) {
       case 1:
         ek_opt = _adapter_opt_unboxi;
-        vminfo = adapter_subword_vminfo(dest);
+        vminfo = adapter_unbox_subword_vminfo(dest);
         break;
       case 2:
         ek_opt = _adapter_opt_unboxl;

--- a/hotspot/src/share/vm/prims/methodHandles.hpp	Tue Oct 12 02:21:06 2010 -0700
+++ b/hotspot/src/share/vm/prims/methodHandles.hpp	Wed Oct 13 01:19:43 2010 -0700
@@ -226,11 +226,20 @@
   }
 
   enum { CONV_VMINFO_SIGN_FLAG = 0x80 };
-  static int adapter_subword_vminfo(BasicType dest) {
-    if (dest == T_BOOLEAN) return (BitsPerInt -  1);
-    if (dest == T_CHAR)    return (BitsPerInt - 16);
-    if (dest == T_BYTE)    return (BitsPerInt -  8) | CONV_VMINFO_SIGN_FLAG;
-    if (dest == T_SHORT)   return (BitsPerInt - 16) | CONV_VMINFO_SIGN_FLAG;
+  // Shift values for prim-to-prim conversions.
+  static int adapter_prim_to_prim_subword_vminfo(BasicType dest) {
+    if (dest == T_BOOLEAN) return (BitsPerInt - 1);  // boolean is 1 bit
+    if (dest == T_CHAR)    return (BitsPerInt - BitsPerShort);
+    if (dest == T_BYTE)    return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG;
+    if (dest == T_SHORT)   return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG;
+    return 0;                   // case T_INT
+  }
+  // Shift values for unboxing a primitive.
+  static int adapter_unbox_subword_vminfo(BasicType dest) {
+    if (dest == T_BOOLEAN) return (BitsPerInt - BitsPerByte );  // implemented as 1 byte
+    if (dest == T_CHAR)    return (BitsPerInt - BitsPerShort);
+    if (dest == T_BYTE)    return (BitsPerInt - BitsPerByte ) | CONV_VMINFO_SIGN_FLAG;
+    if (dest == T_SHORT)   return (BitsPerInt - BitsPerShort) | CONV_VMINFO_SIGN_FLAG;
     return 0;                   // case T_INT
   }
   // Here is the transformation the i2i adapter must perform:

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/test/compiler/6987555/Test6987555.java	Wed Oct 13 01:19:43 2010 -0700
@@ -0,0 +1,177 @@
+/*
+ * Copyright (c) 2010, 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 6987555
+ * @summary JSR 292 unboxing to a boolean value fails on big-endian SPARC
+ *
+ * @run main/othervm -Xint -ea -XX:+UnlockExperimentalVMOptions -XX:+EnableMethodHandles -XX:+EnableInvokeDynamic -XX:+UnlockDiagnosticVMOptions -XX:+VerifyMethodHandles Test6987555
+ */
+
+import java.dyn.*;
+
+public class Test6987555 {
+    private static final Class   CLASS = Test6987555.class;
+    private static final String  NAME  = "foo";
+    private static final boolean DEBUG = false;
+
+    public static void main(String[] args) throws Throwable {
+        testboolean();
+        testbyte();
+        testchar();
+        testshort();
+        testint();
+    }
+
+    // boolean
+    static void testboolean() throws Throwable {
+        doboolean(false);
+        doboolean(true);
+    }
+    static void doboolean(boolean x) throws Throwable {
+        if (DEBUG)  System.out.println("boolean=" + x);
+        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(boolean.class, boolean.class));
+        MethodHandle mh2 = mh1.asType(MethodType.methodType(boolean.class, Boolean.class));
+        boolean a = mh1.<boolean>invokeExact(x);
+        boolean b = mh2.<boolean>invokeExact(Boolean.valueOf(x));
+        assert a == b : a + " != " + b;
+    }
+
+    // byte
+    static void testbyte() throws Throwable {
+        byte[] a = new byte[] {
+            Byte.MIN_VALUE,
+            Byte.MIN_VALUE + 1,
+            -0x0F,
+            -1,
+            0,
+            1,
+            0x0F,
+            Byte.MAX_VALUE - 1,
+            Byte.MAX_VALUE
+        };
+        for (int i = 0; i < a.length; i++) {
+            dobyte(a[i]);
+        }
+    }
+    static void dobyte(byte x) throws Throwable {
+        if (DEBUG)  System.out.println("byte=" + x);
+        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(byte.class, byte.class));
+        MethodHandle mh2 = mh1.asType(MethodType.methodType(byte.class, Byte.class));
+        byte a = mh1.<byte>invokeExact(x);
+        byte b = mh2.<byte>invokeExact(Byte.valueOf(x));
+        assert a == b : a + " != " + b;
+    }
+
+    // char
+    static void testchar() throws Throwable {
+        char[] a = new char[] {
+            Character.MIN_VALUE,
+            Character.MIN_VALUE + 1,
+            0x000F,
+            0x00FF,
+            0x0FFF,
+            Character.MAX_VALUE - 1,
+            Character.MAX_VALUE
+        };
+        for (int i = 0; i < a.length; i++) {
+            dochar(a[i]);
+        }
+    }
+    static void dochar(char x) throws Throwable {
+        if (DEBUG)  System.out.println("char=" + x);
+        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(char.class, char.class));
+        MethodHandle mh2 = mh1.asType(MethodType.methodType(char.class, Character.class));
+        char a = mh1.<char>invokeExact(x);
+        char b = mh2.<char>invokeExact(Character.valueOf(x));
+        assert a == b : a + " != " + b;
+    }
+
+    // short
+    static void testshort() throws Throwable {
+        short[] a = new short[] {
+            Short.MIN_VALUE,
+            Short.MIN_VALUE + 1,
+            -0x0FFF,
+            -0x00FF,
+            -0x000F,
+            -1,
+            0,
+            1,
+            0x000F,
+            0x00FF,
+            0x0FFF,
+            Short.MAX_VALUE - 1,
+            Short.MAX_VALUE
+        };
+        for (int i = 0; i < a.length; i++) {
+            doshort(a[i]);
+        }
+    }
+    static void doshort(short x) throws Throwable {
+        if (DEBUG)  System.out.println("short=" + x);
+        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(short.class, short.class));
+        MethodHandle mh2 = mh1.asType(MethodType.methodType(short.class, Short.class));
+        short a = mh1.<short>invokeExact(x);
+        short b = mh2.<short>invokeExact(Short.valueOf(x));
+        assert a == b : a + " != " + b;
+    }
+
+    // int
+    static void testint() throws Throwable {
+        int[] a = new int[] {
+            Integer.MIN_VALUE,
+            Integer.MIN_VALUE + 1,
+            -0x00000FFF,
+            -0x000000FF,
+            -0x0000000F,
+            -1,
+            0,
+            1,
+            0x0000000F,
+            0x000000FF,
+            0x00000FFF,
+            Integer.MAX_VALUE - 1,
+            Integer.MAX_VALUE
+        };
+        for (int i = 0; i < a.length; i++) {
+            doint(a[i]);
+        }
+    }
+    static void doint(int x) throws Throwable {
+        if (DEBUG)  System.out.println("int=" + x);
+        MethodHandle mh1 = MethodHandles.lookup().findStatic(CLASS, NAME, MethodType.methodType(int.class, int.class));
+        MethodHandle mh2 = mh1.asType(MethodType.methodType(int.class, Integer.class));
+        int a = mh1.<int>invokeExact(x);
+        int b = mh2.<int>invokeExact(Integer.valueOf(x));
+        assert a == b : a + " != " + b;
+    }
+
+    public static boolean foo(boolean i) { return i; }
+    public static byte    foo(byte    i) { return i; }
+    public static char    foo(char    i) { return i; }
+    public static short   foo(short   i) { return i; }
+    public static int     foo(int     i) { return i; }
+}