--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/cpu/x86/vm/interpreterRT_x86_64.cpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,508 @@
+/*
+ * Copyright 2003-2005 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_x86_64.cpp.incl"
+
+#define __ _masm->
+
+// Implementation of SignatureHandlerGenerator
+
+Register InterpreterRuntime::SignatureHandlerGenerator::from() { return r14; }
+Register InterpreterRuntime::SignatureHandlerGenerator::to()   { return rsp; }
+Register InterpreterRuntime::SignatureHandlerGenerator::temp() { return rscratch1; }
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_int() {
+  const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
+
+#ifdef _WIN64
+  switch (_num_args) {
+  case 0:
+    __ movl(c_rarg1, src);
+    _num_args++;
+    break;
+  case 1:
+    __ movl(c_rarg2, src);
+    _num_args++;
+    break;
+  case 2:
+    __ movl(c_rarg3, src);
+    _num_args++;
+    break;
+  default:
+    __ movl(rax, src);
+    __ movl(Address(to(), _stack_offset), rax);
+    _stack_offset += wordSize;
+    break;
+  }
+#else
+  switch (_num_int_args) {
+  case 0:
+    __ movl(c_rarg1, src);
+    _num_int_args++;
+    break;
+  case 1:
+    __ movl(c_rarg2, src);
+    _num_int_args++;
+    break;
+  case 2:
+    __ movl(c_rarg3, src);
+    _num_int_args++;
+    break;
+  case 3:
+    __ movl(c_rarg4, src);
+    _num_int_args++;
+    break;
+  case 4:
+    __ movl(c_rarg5, src);
+    _num_int_args++;
+    break;
+  default:
+    __ movl(rax, src);
+    __ movl(Address(to(), _stack_offset), rax);
+    _stack_offset += wordSize;
+    break;
+  }
+#endif
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_long() {
+  const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1));
+
+#ifdef _WIN64
+  switch (_num_args) {
+  case 0:
+    __ movq(c_rarg1, src);
+    _num_args++;
+    break;
+  case 1:
+    __ movq(c_rarg2, src);
+    _num_args++;
+    break;
+  case 2:
+    __ movq(c_rarg3, src);
+    _num_args++;
+    break;
+  case 3:
+  default:
+    __ movq(rax, src);
+    __ movq(Address(to(), _stack_offset), rax);
+    _stack_offset += wordSize;
+    break;
+  }
+#else
+  switch (_num_int_args) {
+  case 0:
+    __ movq(c_rarg1, src);
+    _num_int_args++;
+    break;
+  case 1:
+    __ movq(c_rarg2, src);
+    _num_int_args++;
+    break;
+  case 2:
+    __ movq(c_rarg3, src);
+    _num_int_args++;
+    break;
+  case 3:
+    __ movq(c_rarg4, src);
+    _num_int_args++;
+    break;
+  case 4:
+    __ movq(c_rarg5, src);
+    _num_int_args++;
+    break;
+  default:
+    __ movq(rax, src);
+    __ movq(Address(to(), _stack_offset), rax);
+    _stack_offset += wordSize;
+    break;
+  }
+#endif
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_float() {
+  const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
+
+#ifdef _WIN64
+  if (_num_args < Argument::n_float_register_parameters_c-1) {
+    __ movflt(as_XMMRegister(++_num_args), src);
+  } else {
+    __ movl(rax, src);
+    __ movl(Address(to(), _stack_offset), rax);
+    _stack_offset += wordSize;
+  }
+#else
+  if (_num_fp_args < Argument::n_float_register_parameters_c) {
+    __ movflt(as_XMMRegister(_num_fp_args++), src);
+  } else {
+    __ movl(rax, src);
+    __ movl(Address(to(), _stack_offset), rax);
+    _stack_offset += wordSize;
+  }
+#endif
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_double() {
+  const Address src(from(), Interpreter::local_offset_in_bytes(offset() + 1));
+
+#ifdef _WIN64
+  if (_num_args < Argument::n_float_register_parameters_c-1) {
+    __ movdbl(as_XMMRegister(++_num_args), src);
+  } else {
+    __ movq(rax, src);
+    __ movq(Address(to(), _stack_offset), rax);
+    _stack_offset += wordSize;
+  }
+#else
+  if (_num_fp_args < Argument::n_float_register_parameters_c) {
+    __ movdbl(as_XMMRegister(_num_fp_args++), src);
+  } else {
+    __ movq(rax, src);
+    __ movq(Address(to(), _stack_offset), rax);
+    _stack_offset += wordSize;
+  }
+#endif
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::pass_object() {
+  const Address src(from(), Interpreter::local_offset_in_bytes(offset()));
+
+#ifdef _WIN64
+  switch (_num_args) {
+  case 0:
+    assert(offset() == 0, "argument register 1 can only be (non-null) receiver");
+    __ leaq(c_rarg1, src);
+    _num_args++;
+    break;
+  case 1:
+    __ leaq(rax, src);
+    __ xorl(c_rarg2, c_rarg2);
+    __ cmpq(src, 0);
+    __ cmovq(Assembler::notEqual, c_rarg2, rax);
+    _num_args++;
+    break;
+  case 2:
+    __ leaq(rax, src);
+    __ xorl(c_rarg3, c_rarg3);
+    __ cmpq(src, 0);
+    __ cmovq(Assembler::notEqual, c_rarg3, rax);
+    _num_args++;
+    break;
+  default:
+    __ leaq(rax, src);
+    __ xorl(temp(), temp());
+    __ cmpq(src, 0);
+    __ cmovq(Assembler::notEqual, temp(), rax);
+    __ movq(Address(to(), _stack_offset), temp());
+    _stack_offset += wordSize;
+    break;
+  }
+#else
+  switch (_num_int_args) {
+  case 0:
+    assert(offset() == 0, "argument register 1 can only be (non-null) receiver");
+    __ leaq(c_rarg1, src);
+    _num_int_args++;
+    break;
+  case 1:
+    __ leaq(rax, src);
+    __ xorl(c_rarg2, c_rarg2);
+    __ cmpq(src, 0);
+    __ cmovq(Assembler::notEqual, c_rarg2, rax);
+    _num_int_args++;
+    break;
+  case 2:
+    __ leaq(rax, src);
+    __ xorl(c_rarg3, c_rarg3);
+    __ cmpq(src, 0);
+    __ cmovq(Assembler::notEqual, c_rarg3, rax);
+    _num_int_args++;
+    break;
+  case 3:
+    __ leaq(rax, src);
+    __ xorl(c_rarg4, c_rarg4);
+    __ cmpq(src, 0);
+    __ cmovq(Assembler::notEqual, c_rarg4, rax);
+    _num_int_args++;
+    break;
+  case 4:
+    __ leaq(rax, src);
+    __ xorl(c_rarg5, c_rarg5);
+    __ cmpq(src, 0);
+    __ cmovq(Assembler::notEqual, c_rarg5, rax);
+    _num_int_args++;
+    break;
+  default:
+    __ leaq(rax, src);
+    __ xorl(temp(), temp());
+    __ cmpq(src, 0);
+    __ cmovq(Assembler::notEqual, temp(), rax);
+    __ movq(Address(to(), _stack_offset), temp());
+    _stack_offset += wordSize;
+    break;
+  }
+#endif
+}
+
+void InterpreterRuntime::SignatureHandlerGenerator::generate(uint64_t fingerprint) {
+  // generate code to handle arguments
+  iterate(fingerprint);
+
+  // return result handler
+  __ lea(rax, ExternalAddress(Interpreter::result_handler(method()->result_type())));
+  __ ret(0);
+
+  __ flush();
+}
+
+
+// Implementation of SignatureHandlerLibrary
+
+void SignatureHandlerLibrary::pd_set_handler(address handler) {}
+
+
+#ifdef _WIN64
+class SlowSignatureHandler
+  : public NativeSignatureIterator {
+ private:
+  address   _from;
+  intptr_t* _to;
+  intptr_t* _reg_args;
+  intptr_t* _fp_identifiers;
+  unsigned int _num_args;
+
+#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()
+  {
+    jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
+    debug_only(verify_tag(frame::TagValue));
+    _from -= Interpreter::stackElementSize();
+
+    if (_num_args < Argument::n_int_register_parameters_c-1) {
+      *_reg_args++ = from_obj;
+      _num_args++;
+    } else {
+      *_to++ = from_obj;
+    }
+  }
+
+  virtual void pass_long()
+  {
+    intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
+    debug_only(verify_tag(frame::TagValue));
+    _from -= 2*Interpreter::stackElementSize();
+
+    if (_num_args < Argument::n_int_register_parameters_c-1) {
+      *_reg_args++ = from_obj;
+      _num_args++;
+    } else {
+      *_to++ = from_obj;
+    }
+  }
+
+  virtual void pass_object()
+  {
+    intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
+    debug_only(verify_tag(frame::TagReference));
+    _from -= Interpreter::stackElementSize();
+    if (_num_args < Argument::n_int_register_parameters_c-1) {
+      *_reg_args++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
+      _num_args++;
+    } else {
+      *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
+    }
+  }
+
+  virtual void pass_float()
+  {
+    jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
+    debug_only(verify_tag(frame::TagValue));
+    _from -= Interpreter::stackElementSize();
+
+    if (_num_args < Argument::n_float_register_parameters_c-1) {
+      *_reg_args++ = from_obj;
+      *_fp_identifiers |= (0x01 << (_num_args*2)); // mark as float
+      _num_args++;
+    } else {
+      *_to++ = from_obj;
+    }
+  }
+
+  virtual void pass_double()
+  {
+    intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
+    debug_only(verify_tag(frame::TagValue));
+    _from -= 2*Interpreter::stackElementSize();
+
+    if (_num_args < Argument::n_float_register_parameters_c-1) {
+      *_reg_args++ = from_obj;
+      *_fp_identifiers |= (0x3 << (_num_args*2)); // mark as double
+      _num_args++;
+    } else {
+      *_to++ = from_obj;
+    }
+  }
+
+ public:
+  SlowSignatureHandler(methodHandle method, address from, intptr_t* to)
+    : NativeSignatureIterator(method)
+  {
+    _from = from;
+    _to   = to;
+
+    _reg_args = to - (method->is_static() ? 4 : 5);
+    _fp_identifiers = to - 2;
+    _to = _to + 4;  // Windows reserves stack space for register arguments
+    *(int*) _fp_identifiers = 0;
+    _num_args = (method->is_static() ? 1 : 0);
+  }
+};
+#else
+class SlowSignatureHandler
+  : public NativeSignatureIterator {
+ private:
+  address   _from;
+  intptr_t* _to;
+  intptr_t* _int_args;
+  intptr_t* _fp_args;
+  intptr_t* _fp_identifiers;
+  unsigned int _num_int_args;
+  unsigned int _num_fp_args;
+
+#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()
+  {
+    jint from_obj = *(jint *)(_from+Interpreter::local_offset_in_bytes(0));
+    debug_only(verify_tag(frame::TagValue));
+    _from -= Interpreter::stackElementSize();
+
+    if (_num_int_args < Argument::n_int_register_parameters_c-1) {
+      *_int_args++ = from_obj;
+      _num_int_args++;
+    } else {
+      *_to++ = from_obj;
+    }
+  }
+
+  virtual void pass_long()
+  {
+    intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
+    debug_only(verify_tag(frame::TagValue));
+    _from -= 2*Interpreter::stackElementSize();
+
+    if (_num_int_args < Argument::n_int_register_parameters_c-1) {
+      *_int_args++ = from_obj;
+      _num_int_args++;
+    } else {
+      *_to++ = from_obj;
+    }
+  }
+
+  virtual void pass_object()
+  {
+    intptr_t *from_addr = (intptr_t*)(_from + Interpreter::local_offset_in_bytes(0));
+    debug_only(verify_tag(frame::TagReference));
+    _from -= Interpreter::stackElementSize();
+
+    if (_num_int_args < Argument::n_int_register_parameters_c-1) {
+      *_int_args++ = (*from_addr == 0) ? NULL : (intptr_t)from_addr;
+      _num_int_args++;
+    } else {
+      *_to++ = (*from_addr == 0) ? NULL : (intptr_t) from_addr;
+    }
+  }
+
+  virtual void pass_float()
+  {
+    jint from_obj = *(jint*)(_from+Interpreter::local_offset_in_bytes(0));
+    debug_only(verify_tag(frame::TagValue));
+    _from -= Interpreter::stackElementSize();
+
+    if (_num_fp_args < Argument::n_float_register_parameters_c) {
+      *_fp_args++ = from_obj;
+      _num_fp_args++;
+    } else {
+      *_to++ = from_obj;
+    }
+  }
+
+  virtual void pass_double()
+  {
+    intptr_t from_obj = *(intptr_t*)(_from+Interpreter::local_offset_in_bytes(1));
+    _from -= 2*Interpreter::stackElementSize();
+
+    if (_num_fp_args < Argument::n_float_register_parameters_c) {
+      *_fp_args++ = from_obj;
+      *_fp_identifiers |= (1 << _num_fp_args); // mark as double
+      _num_fp_args++;
+    } else {
+      *_to++ = from_obj;
+    }
+  }
+
+ public:
+  SlowSignatureHandler(methodHandle method, address from, intptr_t* to)
+    : NativeSignatureIterator(method)
+  {
+    _from = from;
+    _to   = to;
+
+    _int_args = to - (method->is_static() ? 14 : 15);
+    _fp_args =  to - 9;
+    _fp_identifiers = to - 10;
+    *(int*) _fp_identifiers = 0;
+    _num_int_args = (method->is_static() ? 1 : 0);
+    _num_fp_args = 0;
+  }
+};
+#endif
+
+
+IRT_ENTRY(address,
+          InterpreterRuntime::slow_signature_handler(JavaThread* thread,
+                                                     methodOopDesc* method,
+                                                     intptr_t* from,
+                                                     intptr_t* to))
+  methodHandle m(thread, (methodOop)method);
+  assert(m->is_native(), "sanity check");
+
+  // handle arguments
+  SlowSignatureHandler(m, (address)from, to + 1).iterate(UCONST64(-1));
+
+  // return result handler
+  return Interpreter::result_handler(m->result_type());
+IRT_END