Mercurial > hg > graal-jvmci-8
comparison src/share/vm/c1/c1_FrameMap.hpp @ 0:a61af66fc99e jdk7-b24
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author | duke |
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date | Sat, 01 Dec 2007 00:00:00 +0000 |
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children | c18cbe5936b8 61b2245abf36 |
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1 /* | |
2 * Copyright 2000-2006 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 class ciMethod; | |
26 class CallingConvention; | |
27 class BasicTypeArray; | |
28 class BasicTypeList; | |
29 | |
30 //-------------------------------------------------------- | |
31 // FrameMap | |
32 //-------------------------------------------------------- | |
33 | |
34 // This class is responsible of mapping items (locals, monitors, spill | |
35 // slots and registers to their frame location | |
36 // | |
37 // The monitors are specified by a consecutive index, although each monitor entry | |
38 // occupies two words. The monitor_index is 0.._num_monitors | |
39 // The spill index is similar to local index; it is in range 0..(open) | |
40 // | |
41 // The CPU registers are mapped using a fixed table; register with number 0 | |
42 // is the most used one. | |
43 | |
44 | |
45 // stack grow direction --> SP | |
46 // +----------+---+----------+-------+------------------------+-----+ | |
47 // |arguments | x | monitors | spill | reserved argument area | ABI | | |
48 // +----------+---+----------+-------+------------------------+-----+ | |
49 // | |
50 // x = ABI area (SPARC) or return adress and link (i486) | |
51 // ABI = ABI area (SPARC) or nothing (i486) | |
52 | |
53 | |
54 class LIR_OprDesc; | |
55 typedef LIR_OprDesc* LIR_Opr; | |
56 | |
57 | |
58 class FrameMap : public CompilationResourceObj { | |
59 public: | |
60 enum { | |
61 nof_cpu_regs = pd_nof_cpu_regs_frame_map, | |
62 nof_fpu_regs = pd_nof_fpu_regs_frame_map, | |
63 | |
64 nof_cpu_regs_reg_alloc = pd_nof_cpu_regs_reg_alloc, | |
65 nof_fpu_regs_reg_alloc = pd_nof_fpu_regs_reg_alloc, | |
66 | |
67 nof_caller_save_cpu_regs = pd_nof_caller_save_cpu_regs_frame_map, | |
68 nof_caller_save_fpu_regs = pd_nof_caller_save_fpu_regs_frame_map, | |
69 | |
70 spill_slot_size_in_bytes = 4 | |
71 }; | |
72 | |
73 # include "incls/_c1_FrameMap_pd.hpp.incl" // platform dependent declarations | |
74 | |
75 friend class LIR_OprDesc; | |
76 | |
77 private: | |
78 static bool _init_done; | |
79 static Register _cpu_rnr2reg [nof_cpu_regs]; | |
80 static int _cpu_reg2rnr [nof_cpu_regs]; | |
81 | |
82 static LIR_Opr _caller_save_cpu_regs [nof_caller_save_cpu_regs]; | |
83 static LIR_Opr _caller_save_fpu_regs [nof_caller_save_fpu_regs]; | |
84 | |
85 int _framesize; | |
86 int _argcount; | |
87 int _num_monitors; | |
88 int _num_spills; | |
89 int _reserved_argument_area_size; | |
90 int _oop_map_arg_count; | |
91 | |
92 CallingConvention* _incoming_arguments; | |
93 intArray* _argument_locations; | |
94 | |
95 void check_spill_index (int spill_index) const { assert(spill_index >= 0, "bad index"); } | |
96 void check_monitor_index (int monitor_index) const { assert(monitor_index >= 0 && | |
97 monitor_index < _num_monitors, "bad index"); } | |
98 | |
99 static Register cpu_rnr2reg (int rnr) { | |
100 assert(_init_done, "tables not initialized"); | |
101 debug_only(cpu_range_check(rnr);) | |
102 return _cpu_rnr2reg[rnr]; | |
103 } | |
104 | |
105 static int cpu_reg2rnr (Register reg) { | |
106 assert(_init_done, "tables not initialized"); | |
107 debug_only(cpu_range_check(reg->encoding());) | |
108 return _cpu_reg2rnr[reg->encoding()]; | |
109 } | |
110 | |
111 static void map_register(int rnr, Register reg) { | |
112 debug_only(cpu_range_check(rnr);) | |
113 debug_only(cpu_range_check(reg->encoding());) | |
114 _cpu_rnr2reg[rnr] = reg; | |
115 _cpu_reg2rnr[reg->encoding()] = rnr; | |
116 } | |
117 | |
118 void update_reserved_argument_area_size (int size) { | |
119 assert(size >= 0, "check"); | |
120 _reserved_argument_area_size = MAX2(_reserved_argument_area_size, size); | |
121 } | |
122 | |
123 protected: | |
124 #ifndef PRODUCT | |
125 static void cpu_range_check (int rnr) { assert(0 <= rnr && rnr < nof_cpu_regs, "cpu register number is too big"); } | |
126 static void fpu_range_check (int rnr) { assert(0 <= rnr && rnr < nof_fpu_regs, "fpu register number is too big"); } | |
127 #endif | |
128 | |
129 | |
130 ByteSize sp_offset_for_monitor_base(const int idx) const; | |
131 | |
132 Address make_new_address(ByteSize sp_offset) const; | |
133 | |
134 ByteSize sp_offset_for_slot(const int idx) const; | |
135 ByteSize sp_offset_for_double_slot(const int idx) const; | |
136 ByteSize sp_offset_for_spill(const int idx) const; | |
137 ByteSize sp_offset_for_monitor_lock(int monitor_index) const; | |
138 ByteSize sp_offset_for_monitor_object(int monitor_index) const; | |
139 | |
140 VMReg sp_offset2vmreg(ByteSize offset) const; | |
141 | |
142 // platform dependent hook used to check that frame is properly | |
143 // addressable on the platform. Used by sparc to verify that all | |
144 // stack addresses are expressable in a simm13. | |
145 bool validate_frame(); | |
146 | |
147 static LIR_Opr map_to_opr(BasicType type, VMRegPair* reg, bool incoming); | |
148 | |
149 public: | |
150 // Opr representing the stack_pointer on this platform | |
151 static LIR_Opr stack_pointer(); | |
152 | |
153 static BasicTypeArray* signature_type_array_for(const ciMethod* method); | |
154 static BasicTypeArray* signature_type_array_for(const char * signature); | |
155 | |
156 // for outgoing calls, these also update the reserved area to | |
157 // include space for arguments and any ABI area. | |
158 CallingConvention* c_calling_convention (const BasicTypeArray* signature); | |
159 CallingConvention* java_calling_convention (const BasicTypeArray* signature, bool outgoing); | |
160 | |
161 // deopt support | |
162 ByteSize sp_offset_for_orig_pc() { return sp_offset_for_monitor_base(_num_monitors); } | |
163 | |
164 static LIR_Opr as_opr(Register r) { | |
165 return LIR_OprFact::single_cpu(cpu_reg2rnr(r)); | |
166 } | |
167 static LIR_Opr as_oop_opr(Register r) { | |
168 return LIR_OprFact::single_cpu_oop(cpu_reg2rnr(r)); | |
169 } | |
170 | |
171 FrameMap(ciMethod* method, int monitors, int reserved_argument_area_size); | |
172 bool finalize_frame(int nof_slots); | |
173 | |
174 int reserved_argument_area_size () const { return _reserved_argument_area_size; } | |
175 int framesize () const { assert(_framesize != -1, "hasn't been calculated"); return _framesize; } | |
176 ByteSize framesize_in_bytes () const { return in_ByteSize(framesize() * 4); } | |
177 int num_monitors () const { return _num_monitors; } | |
178 int num_spills () const { assert(_num_spills >= 0, "not set"); return _num_spills; } | |
179 int argcount () const { assert(_argcount >= 0, "not set"); return _argcount; } | |
180 | |
181 int oop_map_arg_count() const { return _oop_map_arg_count; } | |
182 | |
183 CallingConvention* incoming_arguments() const { return _incoming_arguments; } | |
184 | |
185 // convenience routines | |
186 Address address_for_slot(int index, int sp_adjust = 0) const { | |
187 return make_new_address(sp_offset_for_slot(index) + in_ByteSize(sp_adjust)); | |
188 } | |
189 Address address_for_double_slot(int index, int sp_adjust = 0) const { | |
190 return make_new_address(sp_offset_for_double_slot(index) + in_ByteSize(sp_adjust)); | |
191 } | |
192 Address address_for_monitor_lock(int monitor_index) const { | |
193 return make_new_address(sp_offset_for_monitor_lock(monitor_index)); | |
194 } | |
195 Address address_for_monitor_object(int monitor_index) const { | |
196 return make_new_address(sp_offset_for_monitor_object(monitor_index)); | |
197 } | |
198 | |
199 void print_frame_layout() const; | |
200 | |
201 // Creates Location describing desired slot and returns it via pointer | |
202 // to Location object. Returns true if the stack frame offset was legal | |
203 // (as defined by Location::legal_offset_in_bytes()), false otherwise. | |
204 // Do not use the returned location if this returns false. | |
205 bool location_for_sp_offset(ByteSize byte_offset_from_sp, | |
206 Location::Type loc_type, Location* loc) const; | |
207 | |
208 bool location_for_monitor_lock (int monitor_index, Location* loc) const { | |
209 return location_for_sp_offset(sp_offset_for_monitor_lock(monitor_index), Location::normal, loc); | |
210 } | |
211 bool location_for_monitor_object(int monitor_index, Location* loc) const { | |
212 return location_for_sp_offset(sp_offset_for_monitor_object(monitor_index), Location::oop, loc); | |
213 } | |
214 bool locations_for_slot (int index, Location::Type loc_type, | |
215 Location* loc, Location* second = NULL) const; | |
216 | |
217 VMReg slot_regname(int index) const { | |
218 return sp_offset2vmreg(sp_offset_for_slot(index)); | |
219 } | |
220 VMReg monitor_object_regname(int monitor_index) const { | |
221 return sp_offset2vmreg(sp_offset_for_monitor_object(monitor_index)); | |
222 } | |
223 VMReg regname(LIR_Opr opr) const; | |
224 | |
225 static LIR_Opr caller_save_cpu_reg_at(int i) { | |
226 assert(i >= 0 && i < nof_caller_save_cpu_regs, "out of bounds"); | |
227 return _caller_save_cpu_regs[i]; | |
228 } | |
229 | |
230 static LIR_Opr caller_save_fpu_reg_at(int i) { | |
231 assert(i >= 0 && i < nof_caller_save_fpu_regs, "out of bounds"); | |
232 return _caller_save_fpu_regs[i]; | |
233 } | |
234 | |
235 static void init(); | |
236 }; | |
237 | |
238 // CallingConvention | |
239 //-------------------------------------------------------- | |
240 | |
241 class CallingConvention: public ResourceObj { | |
242 private: | |
243 LIR_OprList* _args; | |
244 int _reserved_stack_slots; | |
245 | |
246 public: | |
247 CallingConvention (LIR_OprList* args, int reserved_stack_slots) | |
248 : _args(args) | |
249 , _reserved_stack_slots(reserved_stack_slots) {} | |
250 | |
251 LIR_OprList* args() { return _args; } | |
252 | |
253 LIR_Opr at(int i) const { return _args->at(i); } | |
254 int length() const { return _args->length(); } | |
255 | |
256 // Indicates number of real frame slots used by arguments passed on stack. | |
257 int reserved_stack_slots() const { return _reserved_stack_slots; } | |
258 | |
259 #ifndef PRODUCT | |
260 void print () const { | |
261 for (int i = 0; i < length(); i++) { | |
262 at(i)->print(); | |
263 } | |
264 } | |
265 #endif // PRODUCT | |
266 }; |