Mercurial > hg > truffle
annotate src/cpu/x86/vm/frame_x86.hpp @ 10800:69e305a5cf09
Introduce new read opcode that allows compressed oops and read barriers
author | Christos Kotselidis <christos.kotselidis@oracle.com> |
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date | Wed, 17 Jul 2013 19:52:20 +0200 |
parents | b9a918201d47 |
children | d8041d695d19 |
rev | line source |
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0 | 1 /* |
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2 * Copyright (c) 1997, 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_FRAME_X86_HPP |
26 #define CPU_X86_VM_FRAME_X86_HPP | |
27 | |
28 #include "runtime/synchronizer.hpp" | |
29 #include "utilities/top.hpp" | |
30 | |
0 | 31 // A frame represents a physical stack frame (an activation). Frames can be |
32 // C or Java frames, and the Java frames can be interpreted or compiled. | |
33 // In contrast, vframes represent source-level activations, so that one physical frame | |
34 // can correspond to multiple source level frames because of inlining. | |
35 // A frame is comprised of {pc, fp, sp} | |
36 // ------------------------------ Asm interpreter ---------------------------------------- | |
37 // Layout of asm interpreter frame: | |
38 // [expression stack ] * <- sp | |
39 // [monitors ] \ | |
40 // ... | monitor block size | |
41 // [monitors ] / | |
42 // [monitor block size ] | |
43 // [byte code index/pointr] = bcx() bcx_offset | |
44 // [pointer to locals ] = locals() locals_offset | |
45 // [constant pool cache ] = cache() cache_offset | |
46 // [methodData ] = mdp() mdx_offset | |
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47 // [Method* ] = method() method_offset |
0 | 48 // [last sp ] = last_sp() last_sp_offset |
49 // [old stack pointer ] (sender_sp) sender_sp_offset | |
50 // [old frame pointer ] <- fp = link() | |
51 // [return pc ] | |
52 // [oop temp ] (only for native calls) | |
53 // [locals and parameters ] | |
54 // <- sender sp | |
55 // ------------------------------ Asm interpreter ---------------------------------------- | |
56 | |
57 // ------------------------------ C++ interpreter ---------------------------------------- | |
58 // | |
59 // Layout of C++ interpreter frame: (While executing in BytecodeInterpreter::run) | |
60 // | |
61 // <- SP (current esp/rsp) | |
62 // [local variables ] BytecodeInterpreter::run local variables | |
63 // ... BytecodeInterpreter::run local variables | |
64 // [local variables ] BytecodeInterpreter::run local variables | |
65 // [old frame pointer ] fp [ BytecodeInterpreter::run's ebp/rbp ] | |
66 // [return pc ] (return to frame manager) | |
67 // [interpreter_state* ] (arg to BytecodeInterpreter::run) -------------- | |
68 // [expression stack ] <- last_Java_sp | | |
69 // [... ] * <- interpreter_state.stack | | |
70 // [expression stack ] * <- interpreter_state.stack_base | | |
71 // [monitors ] \ | | |
72 // ... | monitor block size | | |
73 // [monitors ] / <- interpreter_state.monitor_base | | |
74 // [struct interpretState ] <-----------------------------------------| | |
75 // [return pc ] (return to callee of frame manager [1] | |
76 // [locals and parameters ] | |
77 // <- sender sp | |
78 | |
79 // [1] When the c++ interpreter calls a new method it returns to the frame | |
80 // manager which allocates a new frame on the stack. In that case there | |
81 // is no real callee of this newly allocated frame. The frame manager is | |
82 // aware of the additional frame(s) and will pop them as nested calls | |
83 // complete. Howevers tTo make it look good in the debugger the frame | |
84 // manager actually installs a dummy pc pointing to RecursiveInterpreterActivation | |
85 // with a fake interpreter_state* parameter to make it easy to debug | |
86 // nested calls. | |
87 | |
88 // Note that contrary to the layout for the assembly interpreter the | |
89 // expression stack allocated for the C++ interpreter is full sized. | |
90 // However this is not as bad as it seems as the interpreter frame_manager | |
91 // will truncate the unused space on succesive method calls. | |
92 // | |
93 // ------------------------------ C++ interpreter ---------------------------------------- | |
94 | |
95 public: | |
96 enum { | |
97 pc_return_offset = 0, | |
98 // All frames | |
99 link_offset = 0, | |
100 return_addr_offset = 1, | |
101 // non-interpreter frames | |
102 sender_sp_offset = 2, | |
103 | |
104 #ifndef CC_INTERP | |
105 | |
106 // Interpreter frames | |
107 interpreter_frame_result_handler_offset = 3, // for native calls only | |
108 interpreter_frame_oop_temp_offset = 2, // for native calls only | |
109 | |
110 interpreter_frame_sender_sp_offset = -1, | |
111 // outgoing sp before a call to an invoked method | |
112 interpreter_frame_last_sp_offset = interpreter_frame_sender_sp_offset - 1, | |
113 interpreter_frame_method_offset = interpreter_frame_last_sp_offset - 1, | |
114 interpreter_frame_mdx_offset = interpreter_frame_method_offset - 1, | |
115 interpreter_frame_cache_offset = interpreter_frame_mdx_offset - 1, | |
116 interpreter_frame_locals_offset = interpreter_frame_cache_offset - 1, | |
117 interpreter_frame_bcx_offset = interpreter_frame_locals_offset - 1, | |
118 interpreter_frame_initial_sp_offset = interpreter_frame_bcx_offset - 1, | |
119 | |
120 interpreter_frame_monitor_block_top_offset = interpreter_frame_initial_sp_offset, | |
121 interpreter_frame_monitor_block_bottom_offset = interpreter_frame_initial_sp_offset, | |
122 | |
123 #endif // CC_INTERP | |
124 | |
125 // Entry frames | |
126 #ifdef AMD64 | |
127 #ifdef _WIN64 | |
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128 entry_frame_after_call_words = 28, |
0 | 129 entry_frame_call_wrapper_offset = 2, |
130 | |
131 arg_reg_save_area_bytes = 32, // Register argument save area | |
132 #else | |
133 entry_frame_after_call_words = 13, | |
134 entry_frame_call_wrapper_offset = -6, | |
135 | |
136 arg_reg_save_area_bytes = 0, | |
137 #endif // _WIN64 | |
138 #else | |
139 entry_frame_call_wrapper_offset = 2, | |
140 #endif // AMD64 | |
141 | |
142 // Native frames | |
143 | |
144 native_frame_initial_param_offset = 2 | |
145 | |
146 }; | |
147 | |
148 intptr_t ptr_at(int offset) const { | |
149 return *ptr_at_addr(offset); | |
150 } | |
151 | |
152 void ptr_at_put(int offset, intptr_t value) { | |
153 *ptr_at_addr(offset) = value; | |
154 } | |
155 | |
156 private: | |
157 // an additional field beyond _sp and _pc: | |
158 intptr_t* _fp; // frame pointer | |
159 // The interpreter and adapters will extend the frame of the caller. | |
160 // Since oopMaps are based on the sp of the caller before extension | |
161 // we need to know that value. However in order to compute the address | |
162 // of the return address we need the real "raw" sp. Since sparc already | |
163 // uses sp() to mean "raw" sp and unextended_sp() to mean the caller's | |
164 // original sp we use that convention. | |
165 | |
166 intptr_t* _unextended_sp; | |
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167 void adjust_unextended_sp(); |
0 | 168 |
169 intptr_t* ptr_at_addr(int offset) const { | |
170 return (intptr_t*) addr_at(offset); | |
171 } | |
172 | |
8721 | 173 #ifdef ASSERT |
1204 | 174 // Used in frame::sender_for_{interpreter,compiled}_frame |
175 static void verify_deopt_original_pc( nmethod* nm, intptr_t* unextended_sp, bool is_method_handle_return = false); | |
176 static void verify_deopt_mh_original_pc(nmethod* nm, intptr_t* unextended_sp) { | |
177 verify_deopt_original_pc(nm, unextended_sp, true); | |
178 } | |
179 #endif | |
180 | |
0 | 181 public: |
182 // Constructors | |
183 | |
184 frame(intptr_t* sp, intptr_t* fp, address pc); | |
185 | |
186 frame(intptr_t* sp, intptr_t* unextended_sp, intptr_t* fp, address pc); | |
187 | |
188 frame(intptr_t* sp, intptr_t* fp); | |
189 | |
190 // accessors for the instance variables | |
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191 // Note: not necessarily the real 'frame pointer' (see real_fp) |
0 | 192 intptr_t* fp() const { return _fp; } |
193 | |
194 inline address* sender_pc_addr() const; | |
195 | |
196 // return address of param, zero origin index. | |
197 inline address* native_param_addr(int idx) const; | |
198 | |
199 // expression stack tos if we are nested in a java call | |
200 intptr_t* interpreter_frame_last_sp() const; | |
201 | |
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202 // helper to update a map with callee-saved RBP |
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203 static void update_map_with_saved_link(RegisterMap* map, intptr_t** link_addr); |
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204 |
0 | 205 #ifndef CC_INTERP |
206 // deoptimization support | |
207 void interpreter_frame_set_last_sp(intptr_t* sp); | |
208 #endif // CC_INTERP | |
209 | |
210 #ifdef CC_INTERP | |
211 inline interpreterState get_interpreterState() const; | |
212 #endif // CC_INTERP | |
1972 | 213 |
214 #endif // CPU_X86_VM_FRAME_X86_HPP |