1 /*
2 * Copyright 1999-2010 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
20 * CA 95054 USA or visit www.sun.com if you need additional information or
21 * have any 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; }