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annotate src/share/vm/adlc/adlparse.hpp @ 17387:0e120f2819ce
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author | Christian Wirth <christian.wirth@oracle.com> |
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date | Thu, 09 Oct 2014 13:19:31 +0200 |
parents | 4ca6dc0799b6 |
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0 | 1 /* |
14909 | 2 * Copyright (c) 1997, 2010, 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 SHARE_VM_ADLC_ADLPARSE_HPP |
26 #define SHARE_VM_ADLC_ADLPARSE_HPP | |
27 | |
0 | 28 // ADLPARSE.HPP - Definitions for Architecture Description Language Parser |
29 // Authors: Chris Vick and Mike Paleczny | |
30 | |
31 // Class List | |
32 class Form; | |
33 // ***** Top Level, 1, classes ***** | |
34 class InstructForm; | |
35 class OperandForm; | |
36 class OpClassForm; | |
37 class AttributeForm; | |
38 class RegisterForm; | |
39 class PipelineForm; | |
40 class SourceForm; | |
41 class Peephole; | |
42 // ***** Level 2 classes ***** | |
43 class Component; | |
44 class Predicate; | |
45 class MatchRule; | |
46 class Encode; | |
47 class Attribute; | |
48 class Effect; | |
49 class ExpandRule; | |
50 class RewriteRule; | |
51 class Constraint; | |
52 class ConstructRule; | |
53 // ***** Register Section ***** | |
54 class RegDef; | |
55 class RegClass; | |
56 class AllocClass; | |
57 class ResourceForm; | |
58 // ***** Pipeline Section ***** | |
59 class PipeDesc; | |
60 class PipeClass; | |
61 class RegList; | |
62 // ***** Peephole Section ***** | |
63 class PeepMatch; | |
64 class PeepConstraint; | |
65 class PeepReplace; | |
66 | |
67 // class ostream; // ostream is a typedef in some systems | |
68 | |
69 extern char *toUpper(const char *str); | |
70 | |
71 //---------------------------ADLParser----------------------------------------- | |
72 class ADLParser { | |
73 protected: | |
74 char *_curline; // Start of current line | |
75 char *_ptr; // Pointer into current location in File Buffer | |
76 char _curchar; // Current character from buffer | |
77 FormDict &_globalNames; // Global names | |
78 | |
79 enum { _preproc_limit = 20 }; | |
80 int _preproc_depth; // How deep are we into ifdefs? | |
81 int _preproc_not_taken; // How deep in not-taken ifdefs? | |
82 bool _preproc_taken[_preproc_limit]; // Are we taking this ifdef level? | |
83 bool _preproc_else[_preproc_limit]; // Did this level have an else yet? | |
84 | |
85 // ***** Level 1 Parse functions ***** | |
86 void instr_parse(void); // Parse instruction definitions | |
87 void oper_parse(void); // Parse operand definitions | |
88 void opclass_parse(void); // Parse operand class definitions | |
89 void ins_attr_parse(void); // Parse instruction attrubute definitions | |
90 void op_attr_parse(void); // Parse operand attrubute definitions | |
91 void source_parse(void); // Parse source section | |
92 void source_hpp_parse(void); // Parse source_hpp section | |
93 void reg_parse(void); // Parse register section | |
94 void encode_parse(void); // Parse encoding section | |
95 void frame_parse(void); // Parse frame section | |
96 void pipe_parse(void); // Parse pipeline section | |
97 void definitions_parse(void); // Parse definitions section | |
98 void peep_parse(void); // Parse peephole rule definitions | |
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99 void preproc_line(void); // Parse a #line statement |
0 | 100 void preproc_define(void); // Parse a #define statement |
101 void preproc_undef(void); // Parse an #undef statement | |
102 | |
103 // Helper functions for instr_parse(). | |
104 void adjust_set_rule(InstructForm *instr); | |
105 void matchrule_clone_and_swap(MatchRule *rule, const char* instr_ident, int& match_rules_cnt); | |
106 | |
107 // ***** Level 2 Parse functions ***** | |
108 // Parse the components of the encode section | |
109 void enc_class_parse(void); // Parse encoding class definition | |
110 void enc_class_parse_block(EncClass* encoding, char* ec_name); | |
111 | |
112 // Parse the components of the frame section | |
113 void stack_dir_parse(FrameForm *frame); // Parse the stack direction entry | |
114 void sync_stack_slots_parse(FrameForm *frame); | |
115 void frame_pointer_parse(FrameForm *frame, bool native); | |
116 void interpreter_frame_pointer_parse(FrameForm *frame, bool native); | |
117 void inline_cache_parse(FrameForm *frame, bool native); | |
118 void interpreter_arg_ptr_parse(FrameForm *frame, bool native); | |
119 void interpreter_method_oop_parse(FrameForm *frame, bool native); | |
120 void cisc_spilling_operand_name_parse(FrameForm *frame, bool native); | |
121 void stack_alignment_parse(FrameForm *frame); | |
122 void return_addr_parse(FrameForm *frame, bool native); | |
123 void preserve_stack_parse(FrameForm *frame); | |
124 char *calling_convention_parse(); | |
125 char *return_value_parse(); | |
126 | |
127 // Parse components of the register section | |
128 void reg_def_parse(void); // Parse register definition | |
129 void reg_class_parse(void); // Parse register class definition | |
130 void alloc_class_parse(void); // Parse allocation class definition | |
131 | |
132 // Parse components of the definition section | |
133 void int_def_parse(void); // Parse an integer definition | |
134 | |
135 // Parse components of a pipeline rule | |
136 void resource_parse(PipelineForm &pipe); // Parse resource definition | |
137 void pipe_desc_parse(PipelineForm &pipe); // Parse pipeline description definition | |
138 void pipe_class_parse(PipelineForm &pipe); // Parse pipeline class definition | |
139 | |
140 // Parse components of a peephole rule | |
141 void peep_match_parse(Peephole &peep); // Parse the peephole match rule | |
142 void peep_constraint_parse(Peephole &peep);// Parse the peephole constraints | |
143 void peep_replace_parse(Peephole &peep); // Parse peephole replacement rule | |
144 | |
145 // Parse the peep match rule tree | |
146 InstructForm *peep_match_child_parse(PeepMatch &match, int parent, int &position, int input); | |
147 | |
148 // Parse components of an operand and/or instruction form | |
149 Predicate *pred_parse(void); // Parse predicate rule | |
150 // Parse match rule, and internal nodes | |
151 MatchRule *match_parse(FormDict &operands); | |
152 MatchNode *matchNode_parse(FormDict &operands, int &depth, | |
153 int &numleaves, bool atroot); | |
154 MatchNode *matchChild_parse(FormDict &operands, int &depth, | |
155 int &numleaves, bool atroot); | |
156 | |
157 Attribute *attr_parse(char *ident);// Parse instr/operand attribute rule | |
158 // Parse instruction encode rule | |
2008 | 159 void ins_encode_parse(InstructForm &inst); |
160 void ins_encode_parse_block(InstructForm &inst); | |
161 void ins_encode_parse_block_impl(InstructForm& inst, EncClass* encoding, char* ec_name); | |
162 | |
163 void constant_parse(InstructForm& inst); | |
164 void constant_parse_expression(EncClass* encoding, char* ec_name); | |
165 | |
0 | 166 Opcode *opcode_parse(InstructForm *insr); // Parse instruction opcode |
167 char *size_parse(InstructForm *insr); // Parse instruction size | |
168 Interface *interface_parse(); // Parse operand interface rule | |
169 Interface *mem_interface_parse(); // Parse memory interface rule | |
170 Interface *cond_interface_parse(); // Parse conditional interface rule | |
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171 char *interface_field_parse(const char** format = NULL);// Parse field contents |
0 | 172 |
173 FormatRule *format_parse(void); // Parse format rule | |
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174 FormatRule *template_parse(void); // Parse format rule |
0 | 175 void effect_parse(InstructForm *instr); // Parse effect rule |
176 ExpandRule *expand_parse(InstructForm *instr); // Parse expand rule | |
177 RewriteRule *rewrite_parse(void); // Parse rewrite rule | |
178 Constraint *constraint_parse(void); // Parse constraint rule | |
179 ConstructRule *construct_parse(void); // Parse construct rule | |
180 void ins_pipe_parse(InstructForm &instr); // Parse ins_pipe rule | |
181 | |
182 // ***** Preprocessor functions ***** | |
183 void begin_if_def(bool taken) { | |
184 assert(_preproc_depth < _preproc_limit, "#ifdef nesting limit"); | |
185 int ppn = _preproc_depth++; | |
186 _preproc_taken[ppn] = taken; | |
187 // Invariant: _preproc_not_taken = SUM !_preproc_taken[0.._preproc_depth) | |
188 if (!_preproc_taken[ppn]) _preproc_not_taken += 1; | |
189 _preproc_else[ppn] = false; | |
190 } | |
191 void invert_if_def() { | |
192 assert(_preproc_depth > 0, "#ifdef matching"); | |
193 int ppn = _preproc_depth - 1; | |
194 assert(!_preproc_else[ppn], "multiple #else lines"); | |
195 _preproc_else[ppn] = true; | |
196 if (!_preproc_taken[ppn]) _preproc_not_taken -= 1; | |
197 _preproc_taken[ppn] = !_preproc_taken[ppn]; | |
198 if (!_preproc_taken[ppn]) _preproc_not_taken += 1; | |
199 } | |
200 void end_if_def() { | |
201 assert(_preproc_depth > 0, "#ifdef matching"); | |
202 int ppn = --_preproc_depth; | |
203 if (!_preproc_taken[ppn]) _preproc_not_taken -= 1; | |
204 } | |
205 bool preproc_taken() { | |
206 // Return true only if there is no directive hiding this text position. | |
207 return _preproc_not_taken == 0; | |
208 } | |
209 // Handle a '#' token. Return true if it disappeared. | |
210 bool handle_preproc_token(); | |
211 | |
212 // ***** Utility Functions for ADL Parser ****** | |
213 | |
214 // Parse one string argument inside parens: '(' string ')' ';' | |
215 char *parse_one_arg(const char *description); | |
216 | |
217 // Return the next identifier given a pointer into a line of the buffer. | |
218 char *get_ident() { return get_ident_common(true); } | |
219 char *get_ident_no_preproc() { return get_ident_common(false); } | |
220 char *get_ident_common(bool do_preproc); // Grab it from the file buffer | |
221 char *get_ident_dup(void); // Grab a duplicate of the identifier | |
222 char *get_ident_or_literal_constant(const char* description); | |
223 // Grab unique identifier from file buffer | |
224 char *get_unique_ident(FormDict &dict, const char *nameDescription); | |
225 // Return the next replacement variable identifier | |
226 char *get_rep_var_ident(void); | |
227 // Skip first '$' and make a duplicate of the string | |
228 char *get_rep_var_ident_dup(void); | |
229 // Return the next token given as a signed integer. | |
230 int get_int(void); | |
231 // Return the next token, a relational operator { ==, !=, <=, >= } | |
232 char *get_relation_dup(void); | |
233 | |
234 void get_oplist(NameList ¶meters, FormDict &operands);// Parse type-operand pairs | |
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235 void get_effectlist(FormDict &effects, FormDict &operands, bool& has_call); // Parse effect-operand pairs |
0 | 236 // Return the contents of a parenthesized expression. |
237 // Requires initial '(' and consumes final ')', which is replaced by '\0'. | |
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238 char *get_paren_expr(const char *description, bool include_location = false); |
0 | 239 // Return expression up to next stop-char, which terminator replaces. |
240 // Does not require initial '('. Does not consume final stop-char. | |
241 // Final stop-char is left in _curchar, but is also is replaced by '\0'. | |
242 char *get_expr(const char *description, const char *stop_chars); | |
243 char *find_cpp_block(const char *description); // Parse a C++ code block | |
244 // Issue parser error message & go to EOL | |
245 void parse_err(int flag, const char *fmt, ...); | |
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246 // Create a location marker for this file and line. |
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247 char *get_line_string(int linenum = 0); |
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248 // Return a location marker which tells the C preprocessor to |
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249 // forget the previous location marker. (Requires awk postprocessing.) |
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250 char *end_line_marker() { return (char*)"\n#line 999999\n"; } |
0 | 251 |
252 // Return pointer to current character | |
253 inline char cur_char(void); | |
254 // Advance to next character, assign this to _curchar | |
255 inline void next_char(void); | |
256 inline void next_char_or_line(void); | |
257 // Advance File Buffer to next line, updating _curline | |
258 inline void next_line(void); | |
259 // Issue an error if we are not at the beginning of a line (exc. whitespace). | |
260 void ensure_start_of_line(void); | |
261 // Issue an error if we are not at the end of a line (exc. whitespace). | |
262 void ensure_end_of_line(void); | |
263 // Skip whitespace, leaving ptr pointing to first non-whitespace character | |
264 // Also handle preprocessor constructs like "#ifdef". | |
265 void skipws() { skipws_common(true); } | |
266 // Skip comments and spaces but not newlines or preprocessor constructs. | |
267 void skipws_no_preproc() { skipws_common(false); } | |
268 void skipws_common(bool do_preproc); | |
269 | |
270 FileBuff &_buf; // File buffer to be parsed | |
271 ArchDesc &_AD; // Architecture Description being built | |
272 | |
273 public: | |
274 | |
275 ADLParser(FileBuff &buf, ArchDesc &archDesc); // Create new ADLParser object | |
276 ~ADLParser(); // Destroy ADLParser object | |
277 | |
278 void parse(void); // Do the parsing & build forms lists | |
279 | |
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280 int linenum() { return _buf.linenum(); } |
0 | 281 |
282 static bool is_literal_constant(const char *hex_string); | |
283 static bool is_hex_digit(char digit); | |
284 static bool is_int_token(const char* token, int& intval); | |
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285 static bool equivalent_expressions(const char* str1, const char* str2); |
0 | 286 static void trim(char* &token); // trim leading & trailing spaces |
287 }; | |
1972 | 288 |
289 #endif // SHARE_VM_ADLC_ADLPARSE_HPP |