Mercurial > hg > truffle
annotate src/cpu/x86/vm/register_x86.hpp @ 20304:a22acf6d7598
8048112: G1 Full GC needs to support the case when the very first region is not available
Summary: Refactor preparation for compaction during Full GC so that it lazily initializes the first compaction point. This also avoids problems later when the first region may not be committed. Also reviewed by K. Barrett.
Reviewed-by: brutisso
author | tschatzl |
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date | Mon, 21 Jul 2014 10:00:31 +0200 |
parents | 8c92982cbbc4 |
children | a560c9b81f0f |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 2000, 2012, Oracle and/or its affiliates. All rights reserved. |
0 | 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 * | |
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19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 * or visit www.oracle.com if you need additional information or have any |
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21 * questions. |
0 | 22 * |
23 */ | |
24 | |
1972 | 25 #ifndef CPU_X86_VM_REGISTER_X86_HPP |
26 #define CPU_X86_VM_REGISTER_X86_HPP | |
27 | |
28 #include "asm/register.hpp" | |
29 #include "vm_version_x86.hpp" | |
30 | |
0 | 31 class VMRegImpl; |
32 typedef VMRegImpl* VMReg; | |
33 | |
34 // Use Register as shortcut | |
35 class RegisterImpl; | |
36 typedef RegisterImpl* Register; | |
37 | |
38 | |
39 // The implementation of integer registers for the ia32 architecture | |
40 inline Register as_Register(int encoding) { | |
41 return (Register)(intptr_t) encoding; | |
42 } | |
43 | |
44 class RegisterImpl: public AbstractRegisterImpl { | |
45 public: | |
46 enum { | |
47 #ifndef AMD64 | |
48 number_of_registers = 8, | |
49 number_of_byte_registers = 4 | |
50 #else | |
51 number_of_registers = 16, | |
52 number_of_byte_registers = 16 | |
53 #endif // AMD64 | |
54 }; | |
55 | |
56 // derived registers, offsets, and addresses | |
57 Register successor() const { return as_Register(encoding() + 1); } | |
58 | |
59 // construction | |
60 inline friend Register as_Register(int encoding); | |
61 | |
62 VMReg as_VMReg(); | |
63 | |
64 // accessors | |
65 int encoding() const { assert(is_valid(), "invalid register"); return (intptr_t)this; } | |
66 bool is_valid() const { return 0 <= (intptr_t)this && (intptr_t)this < number_of_registers; } | |
67 bool has_byte_register() const { return 0 <= (intptr_t)this && (intptr_t)this < number_of_byte_registers; } | |
68 const char* name() const; | |
69 }; | |
70 | |
71 // The integer registers of the ia32/amd64 architecture | |
72 | |
73 CONSTANT_REGISTER_DECLARATION(Register, noreg, (-1)); | |
74 | |
75 | |
76 CONSTANT_REGISTER_DECLARATION(Register, rax, (0)); | |
77 CONSTANT_REGISTER_DECLARATION(Register, rcx, (1)); | |
78 CONSTANT_REGISTER_DECLARATION(Register, rdx, (2)); | |
79 CONSTANT_REGISTER_DECLARATION(Register, rbx, (3)); | |
80 CONSTANT_REGISTER_DECLARATION(Register, rsp, (4)); | |
81 CONSTANT_REGISTER_DECLARATION(Register, rbp, (5)); | |
82 CONSTANT_REGISTER_DECLARATION(Register, rsi, (6)); | |
83 CONSTANT_REGISTER_DECLARATION(Register, rdi, (7)); | |
84 #ifdef AMD64 | |
85 CONSTANT_REGISTER_DECLARATION(Register, r8, (8)); | |
86 CONSTANT_REGISTER_DECLARATION(Register, r9, (9)); | |
87 CONSTANT_REGISTER_DECLARATION(Register, r10, (10)); | |
88 CONSTANT_REGISTER_DECLARATION(Register, r11, (11)); | |
89 CONSTANT_REGISTER_DECLARATION(Register, r12, (12)); | |
90 CONSTANT_REGISTER_DECLARATION(Register, r13, (13)); | |
91 CONSTANT_REGISTER_DECLARATION(Register, r14, (14)); | |
92 CONSTANT_REGISTER_DECLARATION(Register, r15, (15)); | |
93 #endif // AMD64 | |
94 | |
95 // Use FloatRegister as shortcut | |
96 class FloatRegisterImpl; | |
97 typedef FloatRegisterImpl* FloatRegister; | |
98 | |
99 inline FloatRegister as_FloatRegister(int encoding) { | |
100 return (FloatRegister)(intptr_t) encoding; | |
101 } | |
102 | |
103 // The implementation of floating point registers for the ia32 architecture | |
104 class FloatRegisterImpl: public AbstractRegisterImpl { | |
105 public: | |
106 enum { | |
107 number_of_registers = 8 | |
108 }; | |
109 | |
110 // construction | |
111 inline friend FloatRegister as_FloatRegister(int encoding); | |
112 | |
113 VMReg as_VMReg(); | |
114 | |
115 // derived registers, offsets, and addresses | |
116 FloatRegister successor() const { return as_FloatRegister(encoding() + 1); } | |
117 | |
118 // accessors | |
119 int encoding() const { assert(is_valid(), "invalid register"); return (intptr_t)this; } | |
120 bool is_valid() const { return 0 <= (intptr_t)this && (intptr_t)this < number_of_registers; } | |
121 const char* name() const; | |
122 | |
123 }; | |
124 | |
125 // Use XMMRegister as shortcut | |
126 class XMMRegisterImpl; | |
127 typedef XMMRegisterImpl* XMMRegister; | |
128 | |
129 // Use MMXRegister as shortcut | |
130 class MMXRegisterImpl; | |
131 typedef MMXRegisterImpl* MMXRegister; | |
132 | |
133 inline XMMRegister as_XMMRegister(int encoding) { | |
134 return (XMMRegister)(intptr_t)encoding; | |
135 } | |
136 | |
137 inline MMXRegister as_MMXRegister(int encoding) { | |
138 return (MMXRegister)(intptr_t)encoding; | |
139 } | |
140 | |
141 // The implementation of XMM registers for the IA32 architecture | |
142 class XMMRegisterImpl: public AbstractRegisterImpl { | |
143 public: | |
144 enum { | |
145 #ifndef AMD64 | |
146 number_of_registers = 8 | |
147 #else | |
148 number_of_registers = 16 | |
149 #endif // AMD64 | |
150 }; | |
151 | |
152 // construction | |
153 friend XMMRegister as_XMMRegister(int encoding); | |
154 | |
155 VMReg as_VMReg(); | |
156 | |
157 // derived registers, offsets, and addresses | |
158 XMMRegister successor() const { return as_XMMRegister(encoding() + 1); } | |
159 | |
160 // accessors | |
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161 int encoding() const { assert(is_valid(), err_msg("invalid register (%d)", (int)(intptr_t)this )); return (intptr_t)this; } |
0 | 162 bool is_valid() const { return 0 <= (intptr_t)this && (intptr_t)this < number_of_registers; } |
163 const char* name() const; | |
164 }; | |
165 | |
166 | |
167 // The XMM registers, for P3 and up chips | |
168 CONSTANT_REGISTER_DECLARATION(XMMRegister, xnoreg , (-1)); | |
169 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm0 , ( 0)); | |
170 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm1 , ( 1)); | |
171 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm2 , ( 2)); | |
172 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm3 , ( 3)); | |
173 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm4 , ( 4)); | |
174 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm5 , ( 5)); | |
175 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm6 , ( 6)); | |
176 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm7 , ( 7)); | |
177 #ifdef AMD64 | |
178 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm8, (8)); | |
179 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm9, (9)); | |
180 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm10, (10)); | |
181 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm11, (11)); | |
182 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm12, (12)); | |
183 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm13, (13)); | |
184 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm14, (14)); | |
185 CONSTANT_REGISTER_DECLARATION(XMMRegister, xmm15, (15)); | |
186 #endif // AMD64 | |
187 | |
188 // Only used by the 32bit stubGenerator. These can't be described by vmreg and hence | |
189 // can't be described in oopMaps and therefore can't be used by the compilers (at least | |
190 // were deopt might wan't to see them). | |
191 | |
192 // The MMX registers, for P3 and up chips | |
193 CONSTANT_REGISTER_DECLARATION(MMXRegister, mnoreg , (-1)); | |
194 CONSTANT_REGISTER_DECLARATION(MMXRegister, mmx0 , ( 0)); | |
195 CONSTANT_REGISTER_DECLARATION(MMXRegister, mmx1 , ( 1)); | |
196 CONSTANT_REGISTER_DECLARATION(MMXRegister, mmx2 , ( 2)); | |
197 CONSTANT_REGISTER_DECLARATION(MMXRegister, mmx3 , ( 3)); | |
198 CONSTANT_REGISTER_DECLARATION(MMXRegister, mmx4 , ( 4)); | |
199 CONSTANT_REGISTER_DECLARATION(MMXRegister, mmx5 , ( 5)); | |
200 CONSTANT_REGISTER_DECLARATION(MMXRegister, mmx6 , ( 6)); | |
201 CONSTANT_REGISTER_DECLARATION(MMXRegister, mmx7 , ( 7)); | |
202 | |
203 | |
204 // Need to know the total number of registers of all sorts for SharedInfo. | |
205 // Define a class that exports it. | |
206 class ConcreteRegisterImpl : public AbstractRegisterImpl { | |
207 public: | |
208 enum { | |
209 // A big enough number for C2: all the registers plus flags | |
210 // This number must be large enough to cover REG_COUNT (defined by c2) registers. | |
211 // There is no requirement that any ordering here matches any ordering c2 gives | |
212 // it's optoregs. | |
213 | |
214 number_of_registers = RegisterImpl::number_of_registers + | |
215 #ifdef AMD64 | |
216 RegisterImpl::number_of_registers + // "H" half of a 64bit register | |
217 #endif // AMD64 | |
218 2 * FloatRegisterImpl::number_of_registers + | |
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219 8 * XMMRegisterImpl::number_of_registers + |
0 | 220 1 // eflags |
221 }; | |
222 | |
223 static const int max_gpr; | |
224 static const int max_fpr; | |
225 static const int max_xmm; | |
226 | |
227 }; | |
1972 | 228 |
229 #endif // CPU_X86_VM_REGISTER_X86_HPP |