--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/hotspot/src/cpu/x86/vm/c1_FrameMap_x86.hpp	Sat Dec 01 00:00:00 2007 +0000
@@ -0,0 +1,91 @@
+/*
+ * Copyright 1999-2006 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.
+ *
+ */
+
+//  On i486 the frame looks as follows:
+//
+//  +-----------------------------+---------+----------------------------------------+----------------+-----------
+//  | size_arguments-nof_reg_args | 2 words | size_locals-size_arguments+numreg_args | _size_monitors | spilling .
+//  +-----------------------------+---------+----------------------------------------+----------------+-----------
+//
+//  The FPU registers are mapped with their offset from TOS; therefore the
+//  status of FPU stack must be updated during code emission.
+
+ public:
+  static const int pd_c_runtime_reserved_arg_size;
+
+  enum {
+    nof_xmm_regs = pd_nof_xmm_regs_frame_map,
+    nof_caller_save_xmm_regs = pd_nof_caller_save_xmm_regs_frame_map,
+    first_available_sp_in_frame = 0,
+    frame_pad_in_bytes = 8,
+    nof_reg_args = 2
+  };
+
+ private:
+  static LIR_Opr      _caller_save_xmm_regs [nof_caller_save_xmm_regs];
+
+  static XMMRegister _xmm_regs[nof_xmm_regs];
+
+ public:
+  static LIR_Opr receiver_opr;
+
+  static LIR_Opr rsi_opr;
+  static LIR_Opr rdi_opr;
+  static LIR_Opr rbx_opr;
+  static LIR_Opr rax_opr;
+  static LIR_Opr rdx_opr;
+  static LIR_Opr rcx_opr;
+  static LIR_Opr rsp_opr;
+  static LIR_Opr rbp_opr;
+
+  static LIR_Opr rsi_oop_opr;
+  static LIR_Opr rdi_oop_opr;
+  static LIR_Opr rbx_oop_opr;
+  static LIR_Opr rax_oop_opr;
+  static LIR_Opr rdx_oop_opr;
+  static LIR_Opr rcx_oop_opr;
+
+  static LIR_Opr rax_rdx_long_opr;
+  static LIR_Opr rbx_rcx_long_opr;
+  static LIR_Opr fpu0_float_opr;
+  static LIR_Opr fpu0_double_opr;
+  static LIR_Opr xmm0_float_opr;
+  static LIR_Opr xmm0_double_opr;
+
+  static LIR_Opr as_long_opr(Register r, Register r2) {
+    return LIR_OprFact::double_cpu(cpu_reg2rnr(r), cpu_reg2rnr(r2));
+  }
+
+  // VMReg name for spilled physical FPU stack slot n
+  static VMReg fpu_regname (int n);
+
+  static XMMRegister nr2xmmreg(int rnr);
+
+  static bool is_caller_save_register (LIR_Opr opr) { return true; }
+  static bool is_caller_save_register (Register r) { return true; }
+
+  static LIR_Opr caller_save_xmm_reg_at(int i) {
+    assert(i >= 0 && i < nof_caller_save_xmm_regs, "out of bounds");
+    return _caller_save_xmm_regs[i];
+  }