--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/sparc/vm/interpreterRT_sparc.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,260 @@
+/*
+ * Copyright 1998-2006 Sun Microsystems, Inc.  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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
+ * CA 95054 USA or visit www.sun.com if you need additional information or
+ * have any questions.
+ *
+ */
+
+#include "incls/_precompiled.incl"
+#include "incls/_interpreterRT_sparc.cpp.incl"
+
+
+#define __ _masm->
+
+
+// Implementation of SignatureHandlerGenerator
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_word(int size_of_arg, int offset_in_arg) {
+  Argument  jni_arg(jni_offset() + offset_in_arg, false);
+  Register     Rtmp = O0;
+  __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
+
+  __ store_argument(Rtmp, jni_arg);
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
+  Argument  jni_arg(jni_offset(), false);
+  Register  Rtmp = O0;
+
+#ifdef ASSERT
+  if (TaggedStackInterpreter) {
+    // check at least one tag is okay
+    Label ok;
+    __ ld_ptr(Llocals, Interpreter::local_tag_offset_in_bytes(offset() + 1), Rtmp);
+    __ cmp(Rtmp, G0);
+    __ brx(Assembler::equal, false, Assembler::pt, ok);
+    __ delayed()->nop();
+    __ stop("Native object has bad tag value");
+    __ bind(ok);
+  }
+#endif // ASSERT
+
+#ifdef _LP64
+  __ ldx(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
+  __ store_long_argument(Rtmp, jni_arg);
+#else
+  __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
+  __ store_argument(Rtmp, jni_arg);
+  __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 0), Rtmp);
+  Argument successor(jni_arg.successor());
+  __ store_argument(Rtmp, successor);
+#endif
+}
+
+
+#ifdef _LP64
+void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
+  Argument  jni_arg(jni_offset(), false);
+  FloatRegister  Rtmp = F0;
+  __ ldf(FloatRegisterImpl::S, Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
+  __ store_float_argument(Rtmp, jni_arg);
+}
+#endif
+
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
+  Argument  jni_arg(jni_offset(), false);
+#ifdef _LP64
+  FloatRegister  Rtmp = F0;
+  __ ldf(FloatRegisterImpl::D, Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
+  __ store_double_argument(Rtmp, jni_arg);
+#else
+  Register  Rtmp = O0;
+  __ ld(Llocals, Interpreter::local_offset_in_bytes(offset() + 1), Rtmp);
+  __ store_argument(Rtmp, jni_arg);
+  __ ld(Llocals, Interpreter::local_offset_in_bytes(offset()), Rtmp);
+  Argument successor(jni_arg.successor());
+  __ store_argument(Rtmp, successor);
+#endif
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
+  Argument  jni_arg(jni_offset(), false);
+  Argument java_arg(    offset(), true);
+  Register    Rtmp1 = O0;
+  Register    Rtmp2 =  jni_arg.is_register() ?  jni_arg.as_register() : O0;
+  Register    Rtmp3 =  G3_scratch;
+
+  // the handle for a receiver will never be null
+  bool do_NULL_check = offset() != 0 || is_static();
+
+  Address     h_arg = Address(Llocals, 0, Interpreter::local_offset_in_bytes(offset()));
+  __ ld_ptr(h_arg, Rtmp1);
+#ifdef ASSERT
+  if (TaggedStackInterpreter) {
+    // check we have the obj and not the tag
+    Label ok;
+    __ mov(frame::TagReference, Rtmp3);
+    __ cmp(Rtmp1, Rtmp3);
+    __ brx(Assembler::notEqual, true, Assembler::pt, ok);
+    __ delayed()->nop();
+    __ stop("Native object passed tag by mistake");
+    __ bind(ok);
+  }
+#endif // ASSERT
+  if (!do_NULL_check) {
+    __ add(h_arg, Rtmp2);
+  } else {
+    if (Rtmp1 == Rtmp2)
+          __ tst(Rtmp1);
+    else  __ addcc(G0, Rtmp1, Rtmp2); // optimize mov/test pair
+    Label L;
+    __ brx(Assembler::notZero, true, Assembler::pt, L);
+    __ delayed()->add(h_arg, Rtmp2);
+    __ bind(L);
+  }
+  __ store_ptr_argument(Rtmp2, jni_arg);    // this is often a no-op
+}
+
+
+void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
+
+  // generate code to handle arguments
+  iterate(fingerprint);
+
+  // return result handler
+  Address result_handler(Lscratch, Interpreter::result_handler(method()->result_type()));
+  __ sethi(result_handler);
+  __ retl();
+  __ delayed()->add(result_handler, result_handler.base());
+
+  __ flush();
+}
+
+
+// Implementation of SignatureHandlerLibrary
+
+void SignatureHandlerLibrary::pd_set_handler(address handler) {}
+
+
+class SlowSignatureHandler: public NativeSignatureIterator {
+ private:
+  address   _from;
+  intptr_t* _to;
+  intptr_t* _RegArgSignature;                   // Signature of first Arguments to be passed in Registers
+  uint      _argcount;
+
+  enum {                                        // We need to differenciate float from non floats in reg args
+    non_float  = 0,
+    float_sig  = 1,
+    double_sig = 2,
+    long_sig   = 3
+  };
+
+#ifdef ASSERT
+  void verify_tag(frame::Tag t) {
+    assert(!TaggedStackInterpreter ||
+           *(intptr_t*)(_from+Interpreter::local_tag_offset_in_bytes(0)) == t, "wrong tag");
+  }
+#endif // ASSERT
+
+  virtual void pass_int() {
+    *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
+    debug_only(verify_tag(frame::TagValue));
+    _from -= Interpreter::stackElementSize();
+    add_signature( non_float );
+  }
+
+  virtual void pass_object() {
+    // pass address of from
+    intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
+    *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
+    debug_only(verify_tag(frame::TagReference));
+    _from -= Interpreter::stackElementSize();
+    add_signature( non_float );
+   }
+
+#ifdef _LP64
+  virtual void pass_float()  {
+    *_to++ = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
+    debug_only(verify_tag(frame::TagValue));
+    _from -= Interpreter::stackElementSize();
+    add_signature( float_sig );
+   }
+
+  virtual void pass_double() {
+    *_to++ = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
+    debug_only(verify_tag(frame::TagValue));
+    _from -= 2*Interpreter::stackElementSize();
+   add_signature( double_sig );
+   }
+
+  virtual void pass_long() {
+    _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
+    debug_only(verify_tag(frame::TagValue));
+    _to += 1;
+    _from -= 2*Interpreter::stackElementSize();
+    add_signature( long_sig );
+  }
+#else
+   // pass_double() is pass_long() and pass_float() only _LP64
+  virtual void pass_long() {
+    _to[0] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
+    _to[1] = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(0));
+    debug_only(verify_tag(frame::TagValue));
+    _to += 2;
+    _from -= 2*Interpreter::stackElementSize();
+    add_signature( non_float );
+  }
+#endif // _LP64
+
+  virtual void add_signature( intptr_t sig_type ) {
+    if ( _argcount < (sizeof (intptr_t))*4 ) {
+      *_RegArgSignature |= (sig_type << (_argcount*2) );
+      _argcount++;
+    }
+  }
+
+
+ public:
+  SlowSignatureHandler(methodHandle method, address from, intptr_t* to, intptr_t *RegArgSig) : NativeSignatureIterator(method) {
+    _from = from;
+    _to   = to;
+    _RegArgSignature = RegArgSig;
+    *_RegArgSignature = 0;
+    _argcount = method->is_static() ? 2 : 1;
+  }
+};
+
+
+IRT_ENTRY(address, InterpreterRuntime::slow_signature_handler(
+                                                    JavaThread* thread,
+                                                    methodOopDesc* method,
+                                                    intptr_t* from,
+                                                    intptr_t* to ))
+  methodHandle m(thread, method);
+  assert(m->is_native(), "sanity check");
+  // handle arguments
+  // Warning: We use reg arg slot 00 temporarily to return the RegArgSignature
+  // back to the code that pops the arguments into the CPU registers
+  SlowSignatureHandler(m, (address)from, m->is_static() ? to+2 : to+1, to).iterate(UCONST64(-1));
+  // return result handler
+  return Interpreter::result_handler(m->result_type());
+IRT_END