-
Notifications
You must be signed in to change notification settings - Fork 138
/
oplib.pmc
277 lines (191 loc) · 6.17 KB
/
oplib.pmc
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
/*
Copyright (C) 2010-2012, Parrot Foundation.
=head1 NAME
src/pmc/oplib.pmc - Information about an opcode library
=head1 DESCRIPTION
The PMC provides introspection on the opcodes contained in a library.
=cut
*/
#include "parrot/parrot.h"
#include "parrot/oplib/core_ops.h"
/* HEADERIZER HFILE: none */
/* HEADERIZER BEGIN: static */
/* HEADERIZER END: static */
pmclass OpLib auto_attrs {
ATTR op_lib_t *oplib;
/*
=head2 Vtable functions
=over 4
=item C<void init()>
Throws an error. OpLib requires an argument to init. See C<init_pmc>.
=cut
*/
VTABLE void init() {
UNUSED(SELF)
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_INVALID_OPERATION,
"OpLib must be initialized with an oplib name");
}
/*
=item C<void init_pmc(PMC *name_pmc)>
Initializes the OpLib with information about an oplib.
=cut
*/
VTABLE void init_pmc(PMC *name_pmc) {
STRING * const name = VTABLE_get_string(INTERP, name_pmc);
char * const name_cstr = Parrot_str_to_cstring(INTERP, name);
op_lib_t *oplib = NULL;
if (STREQ(name_cstr, PARROT_CORE_OPLIB_NAME)) {
oplib = PARROT_CORE_OPLIB_INIT(INTERP, 1);
}
else {
int i;
for (i = 0; i < INTERP->n_libs; i++) {
if (STREQ(name_cstr, INTERP->all_op_libs[i]->name)) {
oplib = INTERP->all_op_libs[i];
break;
}
}
}
Parrot_str_free_cstring(name_cstr);
if (!oplib)
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_LIBRARY_NOT_LOADED,
"Could not find oplib `%S'", name);
SET_ATTR_oplib(INTERP, SELF, oplib);
}
/*
=item C<INTVAL get_integer_keyed_str(STRING *name)>
=item C<INTVAL get_integer_keyed(PMC *key)>
=item C<PMC* get_pmc_keyed_str(STRING *name)>
=item C<PMC* get_pmc_keyed(PMC *key)>
Look up an op number given the name of the op. First we look for the
specific name, then the more general short name.
The VTABLEs that return integers return -1 when an opcode could not be found.
The VTABLEs that return PMCs throw exceptions instead.
=cut
*/
VTABLE INTVAL get_integer_keyed_str(STRING *name) {
const op_lib_t *oplib;
char * const cstr = Parrot_str_to_cstring(INTERP, name);
INTVAL num;
GET_ATTR_oplib(INTERP, SELF, oplib);
num = oplib->_op_code(INTERP, cstr, 1);
Parrot_str_free_cstring(cstr);
return num;
}
VTABLE INTVAL get_integer_keyed(PMC *key) {
STRING * const str_key = Parrot_key_string(INTERP, key);
return SELF.get_integer_keyed_str(str_key);
}
VTABLE PMC* get_pmc_keyed_str(STRING *name) {
const INTVAL num = STATICSELF.get_integer_keyed_str(name);
if (num == -1)
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_OUT_OF_BOUNDS,
"Opcode: Opcode %S not found", name);
return STATICSELF.get_pmc_keyed_int(num);
}
VTABLE PMC* get_pmc_keyed(PMC *key) {
STRING * const strkey = VTABLE_get_string(INTERP, key);
return VTABLE_get_pmc_keyed_str(INTERP, SELF, strkey);
}
/*
=item C<PMC* get_pmc_keyed_int(INTVAL value)>
Returns an C<Opcode> PMC for a given opcode number. To find an opcode number
from a name, see C<get_integer_keyed_str()> above.
=cut
*/
VTABLE PMC* get_pmc_keyed_int(INTVAL value) {
op_lib_t *oplib;
GET_ATTR_oplib(INTERP, SELF, oplib);
if (value >= oplib->op_count ||
value < 0) {
Parrot_ex_throw_from_c_args(INTERP, NULL, EXCEPTION_OUT_OF_BOUNDS,
"OpLib `%s': Opcode index %d out of bounds", oplib->name, value);
}
else {
PMC * const op = Parrot_pmc_new_noinit(INTERP, enum_class_Opcode);
VTABLE_set_integer_native(INTERP, op, value);
VTABLE_set_pointer(INTERP, op, &oplib->op_info_table[value]);
return op;
}
}
/*
=item C<INTVAL elements()>
=item C<INTVAL get_integer()>
Returns the number of opcodes in the library.
=cut
*/
VTABLE INTVAL elements() {
const op_lib_t *oplib;
GET_ATTR_oplib(INTERP, SELF, oplib);
return oplib->op_count;
}
VTABLE INTVAL get_integer() {
return STATICSELF.elements();
}
/*
=item C<void* get_pointer()>
Returns the C<op_lib_t> pointer for the opcode library.
=cut
*/
VTABLE void* get_pointer() {
op_lib_t *oplib;
GET_ATTR_oplib(INTERP, SELF, oplib);
return oplib;
}
/*
=back
=head2 Methods
=over 4
=item C<PMC *op_family(STRING *shortname)>
Returns an array of C<Opcode> PMCs for all the opcodes in the library that
share the given short name.
=cut
*/
METHOD op_family(STRING *shortname) {
char * const sname = Parrot_str_to_cstring(INTERP, shortname);
const op_lib_t *oplib;
op_info_t *table;
PMC *result = PMCNULL;
INTVAL i;
GET_ATTR_oplib(INTERP, SELF, oplib);
table = oplib->op_info_table;
for (i = 0; i < oplib->op_count; ++i) {
if (strcmp(table[i].name, sname) == 0) {
if (PMC_IS_NULL(result))
result = Parrot_pmc_new(INTERP, enum_class_ResizablePMCArray);
VTABLE_push_pmc(INTERP, result, SELF.get_pmc_keyed_int(i));
}
}
Parrot_str_free_cstring(sname);
RETURN(PMC *result);
}
/*
=item C<PMC *version()>
Returns an array containing the two bytecode version numbers (bc_major, bc_minor)
of the library.
=cut
*/
METHOD version() {
const op_lib_t *oplib;
PMC * const version_array = Parrot_pmc_new_init_int(INTERP,
enum_class_FixedIntegerArray, 2);
GET_ATTR_oplib(INTERP, SELF, oplib);
VTABLE_set_integer_keyed_int(INTERP, version_array,
0, oplib->bc_major_version);
VTABLE_set_integer_keyed_int(INTERP, version_array,
1, oplib->bc_minor_version);
RETURN(PMC *version_array);
}
}
/*
=back
=head1 SEE ALSO
F<src/pmc/opcode.pmc>
=cut
*/
/*
* Local variables:
* c-file-style: "parrot"
* End:
* vim: expandtab shiftwidth=4 cinoptions='\:2=2' :
*/