c1_FrameMap_x86.hpp revision 1472:c18cbe5936b8 
1/*
2 * Copyright (c) 1999, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 *
23 */
24
25//  On i486 the frame looks as follows:
26//
27//  +-----------------------------+---------+----------------------------------------+----------------+-----------
28//  | size_arguments-nof_reg_args | 2 words | size_locals-size_arguments+numreg_args | _size_monitors | spilling .
29//  +-----------------------------+---------+----------------------------------------+----------------+-----------
30//
31//  The FPU registers are mapped with their offset from TOS; therefore the
32//  status of FPU stack must be updated during code emission.
33
34 public:
35  static const int pd_c_runtime_reserved_arg_size;
36
37  enum {
38    nof_xmm_regs = pd_nof_xmm_regs_frame_map,
39    nof_caller_save_xmm_regs = pd_nof_caller_save_xmm_regs_frame_map,
40    first_available_sp_in_frame = 0,
41#ifndef _LP64
42    frame_pad_in_bytes = 8,
43    nof_reg_args = 2
44#else
45    frame_pad_in_bytes = 16,
46    nof_reg_args = 6
47#endif // _LP64
48  };
49
50 private:
51  static LIR_Opr      _caller_save_xmm_regs [nof_caller_save_xmm_regs];
52
53  static XMMRegister _xmm_regs[nof_xmm_regs];
54
55 public:
56  static LIR_Opr receiver_opr;
57
58  static LIR_Opr rsi_opr;
59  static LIR_Opr rdi_opr;
60  static LIR_Opr rbx_opr;
61  static LIR_Opr rax_opr;
62  static LIR_Opr rdx_opr;
63  static LIR_Opr rcx_opr;
64  static LIR_Opr rsp_opr;
65  static LIR_Opr rbp_opr;
66
67  static LIR_Opr rsi_oop_opr;
68  static LIR_Opr rdi_oop_opr;
69  static LIR_Opr rbx_oop_opr;
70  static LIR_Opr rax_oop_opr;
71  static LIR_Opr rdx_oop_opr;
72  static LIR_Opr rcx_oop_opr;
73#ifdef _LP64
74
75  static LIR_Opr  r8_opr;
76  static LIR_Opr  r9_opr;
77  static LIR_Opr r10_opr;
78  static LIR_Opr r11_opr;
79  static LIR_Opr r12_opr;
80  static LIR_Opr r13_opr;
81  static LIR_Opr r14_opr;
82  static LIR_Opr r15_opr;
83
84  static LIR_Opr  r8_oop_opr;
85  static LIR_Opr  r9_oop_opr;
86
87  static LIR_Opr r11_oop_opr;
88  static LIR_Opr r12_oop_opr;
89  static LIR_Opr r13_oop_opr;
90  static LIR_Opr r14_oop_opr;
91
92#endif // _LP64
93
94  static LIR_Opr long0_opr;
95  static LIR_Opr long1_opr;
96  static LIR_Opr fpu0_float_opr;
97  static LIR_Opr fpu0_double_opr;
98  static LIR_Opr xmm0_float_opr;
99  static LIR_Opr xmm0_double_opr;
100
101#ifdef _LP64
102  static LIR_Opr as_long_opr(Register r) {
103    return LIR_OprFact::double_cpu(cpu_reg2rnr(r), cpu_reg2rnr(r));
104  }
105  static LIR_Opr as_pointer_opr(Register r) {
106    return LIR_OprFact::double_cpu(cpu_reg2rnr(r), cpu_reg2rnr(r));
107  }
108#else
109  static LIR_Opr as_long_opr(Register r, Register r2) {
110    return LIR_OprFact::double_cpu(cpu_reg2rnr(r), cpu_reg2rnr(r2));
111  }
112  static LIR_Opr as_pointer_opr(Register r) {
113    return LIR_OprFact::single_cpu(cpu_reg2rnr(r));
114  }
115#endif // _LP64
116
117  // VMReg name for spilled physical FPU stack slot n
118  static VMReg fpu_regname (int n);
119
120  static XMMRegister nr2xmmreg(int rnr);
121
122  static bool is_caller_save_register (LIR_Opr opr) { return true; }
123  static bool is_caller_save_register (Register r) { return true; }
124
125  static LIR_Opr caller_save_xmm_reg_at(int i) {
126    assert(i >= 0 && i < nof_caller_save_xmm_regs, "out of bounds");
127    return _caller_save_xmm_regs[i];
128  }
129
130  // JSR 292
131  static LIR_Opr& method_handle_invoke_SP_save_opr() { return rbp_opr; }
132