Commit | Line | Data |
---|---|---|
c5be433b | 1 | #define PERL_NO_GET_CONTEXT |
6badd1a5 | 2 | #include "EXTERN.h" |
3 | #include "perl.h" | |
4 | #include "XSUB.h" | |
5 | ||
3280af22 | 6 | /* PL_maxo shouldn't differ from MAXO but leave room anyway (see BOOT:) */ |
6badd1a5 | 7 | #define OP_MASK_BUF_SIZE (MAXO + 100) |
8 | ||
4d8e9581 | 9 | /* XXX op_named_bits and opset_all are never freed */ |
df3728a2 | 10 | #define MY_CXT_KEY "Opcode::_guts" XS_VERSION |
89ca4ac7 JH |
11 | |
12 | typedef struct { | |
13 | HV * x_op_named_bits; /* cache shared for whole process */ | |
14 | SV * x_opset_all; /* mask with all bits set */ | |
15 | IV x_opset_len; /* length of opmasks in bytes */ | |
16 | int x_opcode_debug; | |
17 | } my_cxt_t; | |
18 | ||
19 | START_MY_CXT | |
20 | ||
21 | #define op_named_bits (MY_CXT.x_op_named_bits) | |
22 | #define opset_all (MY_CXT.x_opset_all) | |
23 | #define opset_len (MY_CXT.x_opset_len) | |
24 | #define opcode_debug (MY_CXT.x_opcode_debug) | |
6badd1a5 | 25 | |
cea2e8a9 GS |
26 | static SV *new_opset (pTHX_ SV *old_opset); |
27 | static int verify_opset (pTHX_ SV *opset, int fatal); | |
5d7488b2 AL |
28 | static void set_opset_bits (pTHX_ char *bitmap, SV *bitspec, int on, const char *opname); |
29 | static void put_op_bitspec (pTHX_ const char *optag, STRLEN len, SV *opset); | |
30 | static SV *get_op_bitspec (pTHX_ const char *opname, STRLEN len, int fatal); | |
6badd1a5 | 31 | |
32 | ||
33 | /* Initialise our private op_named_bits HV. | |
34 | * It is first loaded with the name and number of each perl operator. | |
35 | * Then the builtin tags :none and :all are added. | |
36 | * Opcode.pm loads the standard optags from __DATA__ | |
4d8e9581 GS |
37 | * XXX leak-alert: data allocated here is never freed, call this |
38 | * at most once | |
6badd1a5 | 39 | */ |
40 | ||
41 | static void | |
cea2e8a9 | 42 | op_names_init(pTHX) |
6badd1a5 | 43 | { |
44 | int i; | |
45 | STRLEN len; | |
31fb1209 | 46 | char **op_names; |
6badd1a5 | 47 | char *bitmap; |
89ca4ac7 | 48 | dMY_CXT; |
6badd1a5 | 49 | |
50 | op_named_bits = newHV(); | |
31fb1209 | 51 | op_names = get_op_names(); |
3280af22 | 52 | for(i=0; i < PL_maxo; ++i) { |
5d7488b2 | 53 | SV * const sv = newSViv(i); |
e858de61 | 54 | SvREADONLY_on(sv); |
c33e8be1 | 55 | (void) hv_store(op_named_bits, op_names[i], strlen(op_names[i]), sv, 0); |
6badd1a5 | 56 | } |
57 | ||
e7c4ace0 | 58 | put_op_bitspec(aTHX_ STR_WITH_LEN(":none"), sv_2mortal(new_opset(aTHX_ Nullsv))); |
6badd1a5 | 59 | |
cea2e8a9 | 60 | opset_all = new_opset(aTHX_ Nullsv); |
6badd1a5 | 61 | bitmap = SvPV(opset_all, len); |
e7c4ace0 | 62 | memset(bitmap, 0xFF, len-1); /* deal with last byte specially, see below */ |
6badd1a5 | 63 | /* Take care to set the right number of bits in the last byte */ |
3280af22 | 64 | bitmap[len-1] = (PL_maxo & 0x07) ? ~(0xFF << (PL_maxo & 0x07)) : 0xFF; |
e7c4ace0 | 65 | put_op_bitspec(aTHX_ STR_WITH_LEN(":all"), opset_all); /* don't mortalise */ |
6badd1a5 | 66 | } |
67 | ||
68 | ||
69 | /* Store a new tag definition. Always a mask. | |
70 | * The tag must not already be defined. | |
71 | * SV *mask is copied not referenced. | |
72 | */ | |
73 | ||
74 | static void | |
5d7488b2 | 75 | put_op_bitspec(pTHX_ const char *optag, STRLEN len, SV *mask) |
6badd1a5 | 76 | { |
77 | SV **svp; | |
89ca4ac7 JH |
78 | dMY_CXT; |
79 | ||
cea2e8a9 | 80 | verify_opset(aTHX_ mask,1); |
6badd1a5 | 81 | svp = hv_fetch(op_named_bits, optag, len, 1); |
82 | if (SvOK(*svp)) | |
83 | croak("Opcode tag \"%s\" already defined", optag); | |
84 | sv_setsv(*svp, mask); | |
85 | SvREADONLY_on(*svp); | |
86 | } | |
87 | ||
88 | ||
89 | ||
90 | /* Fetch a 'bits' entry for an opname or optag (IV/PV). | |
91 | * Note that we return the actual entry for speed. | |
b7b1e41b | 92 | * Always sv_mortalcopy() if returning it to user code. |
6badd1a5 | 93 | */ |
94 | ||
95 | static SV * | |
5d7488b2 | 96 | get_op_bitspec(pTHX_ const char *opname, STRLEN len, int fatal) |
6badd1a5 | 97 | { |
98 | SV **svp; | |
89ca4ac7 JH |
99 | dMY_CXT; |
100 | ||
6badd1a5 | 101 | svp = hv_fetch(op_named_bits, opname, len, 0); |
102 | if (!svp || !SvOK(*svp)) { | |
103 | if (!fatal) | |
104 | return Nullsv; | |
105 | if (*opname == ':') | |
106 | croak("Unknown operator tag \"%s\"", opname); | |
107 | if (*opname == '!') /* XXX here later, or elsewhere? */ | |
108 | croak("Can't negate operators here (\"%s\")", opname); | |
109 | if (isALPHA(*opname)) | |
110 | croak("Unknown operator name \"%s\"", opname); | |
111 | croak("Unknown operator prefix \"%s\"", opname); | |
112 | } | |
113 | return *svp; | |
114 | } | |
115 | ||
116 | ||
117 | ||
118 | static SV * | |
cea2e8a9 | 119 | new_opset(pTHX_ SV *old_opset) |
6badd1a5 | 120 | { |
121 | SV *opset; | |
89ca4ac7 JH |
122 | dMY_CXT; |
123 | ||
6badd1a5 | 124 | if (old_opset) { |
cea2e8a9 | 125 | verify_opset(aTHX_ old_opset,1); |
6badd1a5 | 126 | opset = newSVsv(old_opset); |
127 | } | |
128 | else { | |
561b68a9 | 129 | opset = newSV(opset_len); |
aa07b2f6 | 130 | Zero(SvPVX_const(opset), opset_len + 1, char); |
6badd1a5 | 131 | SvCUR_set(opset, opset_len); |
132 | (void)SvPOK_only(opset); | |
133 | } | |
134 | /* not mortalised here */ | |
135 | return opset; | |
136 | } | |
137 | ||
138 | ||
139 | static int | |
cea2e8a9 | 140 | verify_opset(pTHX_ SV *opset, int fatal) |
6badd1a5 | 141 | { |
9849c14c | 142 | const char *err = NULL; |
89ca4ac7 JH |
143 | dMY_CXT; |
144 | ||
6badd1a5 | 145 | if (!SvOK(opset)) err = "undefined"; |
146 | else if (!SvPOK(opset)) err = "wrong type"; | |
7c436af3 | 147 | else if (SvCUR(opset) != (STRLEN)opset_len) err = "wrong size"; |
6badd1a5 | 148 | if (err && fatal) { |
149 | croak("Invalid opset: %s", err); | |
150 | } | |
151 | return !err; | |
152 | } | |
153 | ||
154 | ||
155 | static void | |
5d7488b2 | 156 | set_opset_bits(pTHX_ char *bitmap, SV *bitspec, int on, const char *opname) |
6badd1a5 | 157 | { |
89ca4ac7 JH |
158 | dMY_CXT; |
159 | ||
6badd1a5 | 160 | if (SvIOK(bitspec)) { |
5d7488b2 AL |
161 | const int myopcode = SvIV(bitspec); |
162 | const int offset = myopcode >> 3; | |
163 | const int bit = myopcode & 0x07; | |
3280af22 | 164 | if (myopcode >= PL_maxo || myopcode < 0) |
6badd1a5 | 165 | croak("panic: opcode \"%s\" value %d is invalid", opname, myopcode); |
166 | if (opcode_debug >= 2) | |
ff0cee69 | 167 | warn("set_opset_bits bit %2d (off=%d, bit=%d) %s %s\n", |
6badd1a5 | 168 | myopcode, offset, bit, opname, (on)?"on":"off"); |
169 | if (on) | |
170 | bitmap[offset] |= 1 << bit; | |
171 | else | |
172 | bitmap[offset] &= ~(1 << bit); | |
173 | } | |
7c436af3 | 174 | else if (SvPOK(bitspec) && SvCUR(bitspec) == (STRLEN)opset_len) { |
6badd1a5 | 175 | |
176 | STRLEN len; | |
5d7488b2 | 177 | const char * const specbits = SvPV(bitspec, len); |
6badd1a5 | 178 | if (opcode_debug >= 2) |
179 | warn("set_opset_bits opset %s %s\n", opname, (on)?"on":"off"); | |
180 | if (on) | |
181 | while(len-- > 0) bitmap[len] |= specbits[len]; | |
182 | else | |
183 | while(len-- > 0) bitmap[len] &= ~specbits[len]; | |
184 | } | |
185 | else | |
ff0cee69 | 186 | croak("panic: invalid bitspec for \"%s\" (type %u)", |
187 | opname, (unsigned)SvTYPE(bitspec)); | |
6badd1a5 | 188 | } |
189 | ||
190 | ||
191 | static void | |
cea2e8a9 | 192 | opmask_add(pTHX_ SV *opset) /* THE ONLY FUNCTION TO EDIT PL_op_mask ITSELF */ |
6badd1a5 | 193 | { |
194 | int i,j; | |
195 | char *bitmask; | |
196 | STRLEN len; | |
197 | int myopcode = 0; | |
89ca4ac7 | 198 | dMY_CXT; |
6badd1a5 | 199 | |
cea2e8a9 | 200 | verify_opset(aTHX_ opset,1); /* croaks on bad opset */ |
6badd1a5 | 201 | |
3280af22 NIS |
202 | if (!PL_op_mask) /* caller must ensure PL_op_mask exists */ |
203 | croak("Can't add to uninitialised PL_op_mask"); | |
6badd1a5 | 204 | |
205 | /* OPCODES ALREADY MASKED ARE NEVER UNMASKED. See opmask_addlocal() */ | |
206 | ||
207 | bitmask = SvPV(opset, len); | |
208 | for (i=0; i < opset_len; i++) { | |
5d7488b2 | 209 | const U16 bits = bitmask[i]; |
6badd1a5 | 210 | if (!bits) { /* optimise for sparse masks */ |
211 | myopcode += 8; | |
212 | continue; | |
213 | } | |
3280af22 NIS |
214 | for (j=0; j < 8 && myopcode < PL_maxo; ) |
215 | PL_op_mask[myopcode++] |= bits & (1 << j++); | |
6badd1a5 | 216 | } |
217 | } | |
218 | ||
219 | static void | |
cea2e8a9 | 220 | opmask_addlocal(pTHX_ SV *opset, char *op_mask_buf) /* Localise PL_op_mask then opmask_add() */ |
6badd1a5 | 221 | { |
3280af22 | 222 | char *orig_op_mask = PL_op_mask; |
89ca4ac7 JH |
223 | dMY_CXT; |
224 | ||
7766f137 | 225 | SAVEVPTR(PL_op_mask); |
ac4c12e7 GS |
226 | /* XXX casting to an ordinary function ptr from a member function ptr |
227 | * is disallowed by Borland | |
228 | */ | |
6badd1a5 | 229 | if (opcode_debug >= 2) |
51371543 | 230 | SAVEDESTRUCTOR((void(*)(void*))Perl_warn,"PL_op_mask restored"); |
3280af22 | 231 | PL_op_mask = &op_mask_buf[0]; |
6badd1a5 | 232 | if (orig_op_mask) |
3280af22 | 233 | Copy(orig_op_mask, PL_op_mask, PL_maxo, char); |
6badd1a5 | 234 | else |
3280af22 | 235 | Zero(PL_op_mask, PL_maxo, char); |
cea2e8a9 | 236 | opmask_add(aTHX_ opset); |
6badd1a5 | 237 | } |
238 | ||
239 | ||
240 | ||
241 | MODULE = Opcode PACKAGE = Opcode | |
242 | ||
243 | PROTOTYPES: ENABLE | |
244 | ||
245 | BOOT: | |
89ca4ac7 JH |
246 | { |
247 | MY_CXT_INIT; | |
3280af22 NIS |
248 | assert(PL_maxo < OP_MASK_BUF_SIZE); |
249 | opset_len = (PL_maxo + 7) / 8; | |
6badd1a5 | 250 | if (opcode_debug >= 1) |
ff0cee69 | 251 | warn("opset_len %ld\n", (long)opset_len); |
cea2e8a9 | 252 | op_names_init(aTHX); |
89ca4ac7 | 253 | } |
6badd1a5 | 254 | |
8c7314f9 JH |
255 | void |
256 | _safe_pkg_prep(Package) | |
352e1c09 | 257 | SV *Package |
8c7314f9 JH |
258 | PPCODE: |
259 | HV *hv; | |
260 | ENTER; | |
261 | ||
352e1c09 | 262 | hv = gv_stashsv(Package, GV_ADDWARN); /* should exist already */ |
8c7314f9 | 263 | |
bfcb3514 NC |
264 | if (strNE(HvNAME_get(hv),"main")) { |
265 | /* make it think it's in main:: */ | |
51a37f80 | 266 | hv_name_set(hv, "main", 4, 0); |
c33e8be1 | 267 | (void) hv_store(hv,"_",1,(SV *)PL_defgv,0); /* connect _ to global */ |
8c7314f9 JH |
268 | SvREFCNT_inc((SV *)PL_defgv); /* want to keep _ around! */ |
269 | } | |
270 | LEAVE; | |
271 | ||
272 | ||
273 | ||
274 | ||
6badd1a5 | 275 | |
276 | void | |
9d8a25dc | 277 | _safe_call_sv(Package, mask, codesv) |
352e1c09 | 278 | SV * Package |
6badd1a5 | 279 | SV * mask |
280 | SV * codesv | |
4d8e9581 | 281 | PPCODE: |
6badd1a5 | 282 | char op_mask_buf[OP_MASK_BUF_SIZE]; |
283 | GV *gv; | |
4adfac04 | 284 | HV *dummy_hv; |
6badd1a5 | 285 | |
286 | ENTER; | |
287 | ||
cea2e8a9 | 288 | opmask_addlocal(aTHX_ mask, op_mask_buf); |
6badd1a5 | 289 | |
3280af22 NIS |
290 | save_aptr(&PL_endav); |
291 | PL_endav = (AV*)sv_2mortal((SV*)newAV()); /* ignore END blocks for now */ | |
6badd1a5 | 292 | |
e5125a24 | 293 | save_hptr(&PL_defstash); /* save current default stash */ |
6badd1a5 | 294 | /* the assignment to global defstash changes our sense of 'main' */ |
352e1c09 | 295 | PL_defstash = gv_stashsv(Package, GV_ADDWARN); /* should exist already */ |
8c7314f9 | 296 | |
03d9f026 FC |
297 | SAVEGENERICSV(PL_curstash); |
298 | PL_curstash = (HV *)SvREFCNT_inc_simple(PL_defstash); | |
6badd1a5 | 299 | |
300 | /* defstash must itself contain a main:: so we'll add that now */ | |
301 | /* take care with the ref counts (was cause of long standing bug) */ | |
302 | /* XXX I'm still not sure if this is right, GV_ADDWARN should warn! */ | |
352e1c09 | 303 | gv = gv_fetchpvs("main::", GV_ADDWARN, SVt_PVHV); |
6badd1a5 | 304 | sv_free((SV*)GvHV(gv)); |
3280af22 | 305 | GvHV(gv) = (HV*)SvREFCNT_inc(PL_defstash); |
6badd1a5 | 306 | |
e5125a24 | 307 | /* %INC must be clean for use/require in compartment */ |
4adfac04 | 308 | dummy_hv = save_hash(PL_incgv); |
352e1c09 | 309 | GvHV(PL_incgv) = (HV*)SvREFCNT_inc(GvHV(gv_HVadd(gv_fetchpvs("INC",GV_ADD,SVt_PVHV)))); |
e5125a24 | 310 | |
4eb3f1b8 RGS |
311 | /* Invalidate ISA and method caches */ |
312 | ++PL_sub_generation; | |
313 | hv_clear(PL_stashcache); | |
314 | ||
924508f0 | 315 | PUSHMARK(SP); |
6badd1a5 | 316 | perl_call_sv(codesv, GIMME|G_EVAL|G_KEEPERR); /* use callers context */ |
57481f5a | 317 | sv_free( (SV *) dummy_hv); /* get rid of what save_hash gave us*/ |
6badd1a5 | 318 | SPAGAIN; /* for the PUTBACK added by xsubpp */ |
319 | LEAVE; | |
320 | ||
321 | ||
322 | int | |
323 | verify_opset(opset, fatal = 0) | |
324 | SV *opset | |
325 | int fatal | |
cea2e8a9 GS |
326 | CODE: |
327 | RETVAL = verify_opset(aTHX_ opset,fatal); | |
328 | OUTPUT: | |
329 | RETVAL | |
6badd1a5 | 330 | |
331 | void | |
332 | invert_opset(opset) | |
333 | SV *opset | |
4d8e9581 | 334 | CODE: |
6badd1a5 | 335 | { |
336 | char *bitmap; | |
89ca4ac7 | 337 | dMY_CXT; |
6badd1a5 | 338 | STRLEN len = opset_len; |
89ca4ac7 | 339 | |
cea2e8a9 | 340 | opset = sv_2mortal(new_opset(aTHX_ opset)); /* verify and clone opset */ |
6badd1a5 | 341 | bitmap = SvPVX(opset); |
342 | while(len-- > 0) | |
343 | bitmap[len] = ~bitmap[len]; | |
3280af22 NIS |
344 | /* take care of extra bits beyond PL_maxo in last byte */ |
345 | if (PL_maxo & 07) | |
346 | bitmap[opset_len-1] &= ~(0xFF << (PL_maxo & 0x07)); | |
6badd1a5 | 347 | } |
348 | ST(0) = opset; | |
349 | ||
350 | ||
351 | void | |
352 | opset_to_ops(opset, desc = 0) | |
353 | SV *opset | |
354 | int desc | |
4d8e9581 | 355 | PPCODE: |
6badd1a5 | 356 | { |
357 | STRLEN len; | |
358 | int i, j, myopcode; | |
5d7488b2 | 359 | const char * const bitmap = SvPV(opset, len); |
31fb1209 | 360 | char **names = (desc) ? get_op_descs() : get_op_names(); |
89ca4ac7 JH |
361 | dMY_CXT; |
362 | ||
cea2e8a9 | 363 | verify_opset(aTHX_ opset,1); |
6badd1a5 | 364 | for (myopcode=0, i=0; i < opset_len; i++) { |
5d7488b2 | 365 | const U16 bits = bitmap[i]; |
3280af22 | 366 | for (j=0; j < 8 && myopcode < PL_maxo; j++, myopcode++) { |
6badd1a5 | 367 | if ( bits & (1 << j) ) |
d3d34884 NC |
368 | XPUSHs(newSVpvn_flags(names[myopcode], strlen(names[myopcode]), |
369 | SVs_TEMP)); | |
6badd1a5 | 370 | } |
371 | } | |
372 | } | |
373 | ||
374 | ||
375 | void | |
376 | opset(...) | |
4d8e9581 | 377 | CODE: |
8063af02 | 378 | int i; |
5d7488b2 | 379 | SV *bitspec; |
6badd1a5 | 380 | STRLEN len, on; |
89ca4ac7 | 381 | |
5d7488b2 AL |
382 | SV * const opset = sv_2mortal(new_opset(aTHX_ Nullsv)); |
383 | char * const bitmap = SvPVX(opset); | |
6badd1a5 | 384 | for (i = 0; i < items; i++) { |
5d7488b2 | 385 | const char *opname; |
6badd1a5 | 386 | on = 1; |
cea2e8a9 | 387 | if (verify_opset(aTHX_ ST(i),0)) { |
6badd1a5 | 388 | opname = "(opset)"; |
389 | bitspec = ST(i); | |
390 | } | |
391 | else { | |
392 | opname = SvPV(ST(i), len); | |
393 | if (*opname == '!') { on=0; ++opname;--len; } | |
cea2e8a9 | 394 | bitspec = get_op_bitspec(aTHX_ opname, len, 1); |
6badd1a5 | 395 | } |
cea2e8a9 | 396 | set_opset_bits(aTHX_ bitmap, bitspec, on, opname); |
6badd1a5 | 397 | } |
398 | ST(0) = opset; | |
399 | ||
400 | ||
401 | #define PERMITING (ix == 0 || ix == 1) | |
402 | #define ONLY_THESE (ix == 0 || ix == 2) | |
403 | ||
404 | void | |
405 | permit_only(safe, ...) | |
406 | SV *safe | |
4d8e9581 | 407 | ALIAS: |
6badd1a5 | 408 | permit = 1 |
409 | deny_only = 2 | |
410 | deny = 3 | |
4d8e9581 | 411 | CODE: |
5d7488b2 | 412 | int i; |
6badd1a5 | 413 | SV *bitspec, *mask; |
5d7488b2 | 414 | char *bitmap; |
6badd1a5 | 415 | STRLEN len; |
89ca4ac7 | 416 | dMY_CXT; |
6badd1a5 | 417 | |
418 | if (!SvROK(safe) || !SvOBJECT(SvRV(safe)) || SvTYPE(SvRV(safe))!=SVt_PVHV) | |
419 | croak("Not a Safe object"); | |
420 | mask = *hv_fetch((HV*)SvRV(safe), "Mask",4, 1); | |
421 | if (ONLY_THESE) /* *_only = new mask, else edit current */ | |
cea2e8a9 | 422 | sv_setsv(mask, sv_2mortal(new_opset(aTHX_ PERMITING ? opset_all : Nullsv))); |
4d8e9581 | 423 | else |
cea2e8a9 | 424 | verify_opset(aTHX_ mask,1); /* croaks */ |
6badd1a5 | 425 | bitmap = SvPVX(mask); |
426 | for (i = 1; i < items; i++) { | |
5d7488b2 AL |
427 | const char *opname; |
428 | int on = PERMITING ? 0 : 1; /* deny = mask bit on */ | |
cea2e8a9 | 429 | if (verify_opset(aTHX_ ST(i),0)) { /* it's a valid mask */ |
6badd1a5 | 430 | opname = "(opset)"; |
431 | bitspec = ST(i); | |
432 | } | |
433 | else { /* it's an opname/optag */ | |
434 | opname = SvPV(ST(i), len); | |
435 | /* invert if op has ! prefix (only one allowed) */ | |
436 | if (*opname == '!') { on = !on; ++opname; --len; } | |
cea2e8a9 | 437 | bitspec = get_op_bitspec(aTHX_ opname, len, 1); /* croaks */ |
6badd1a5 | 438 | } |
cea2e8a9 | 439 | set_opset_bits(aTHX_ bitmap, bitspec, on, opname); |
6badd1a5 | 440 | } |
6b88bc9c | 441 | ST(0) = &PL_sv_yes; |
6badd1a5 | 442 | |
443 | ||
444 | ||
445 | void | |
446 | opdesc(...) | |
4d8e9581 | 447 | PPCODE: |
5d7488b2 | 448 | int i; |
6badd1a5 | 449 | STRLEN len; |
450 | SV **args; | |
31fb1209 | 451 | char **op_desc = get_op_descs(); |
89ca4ac7 JH |
452 | dMY_CXT; |
453 | ||
6badd1a5 | 454 | /* copy args to a scratch area since we may push output values onto */ |
455 | /* the stack faster than we read values off it if masks are used. */ | |
d3d34884 | 456 | args = (SV**)SvPVX(newSVpvn_flags((char*)&ST(0), items*sizeof(SV*), SVs_TEMP)); |
6badd1a5 | 457 | for (i = 0; i < items; i++) { |
5d7488b2 | 458 | const char * const opname = SvPV(args[i], len); |
cea2e8a9 | 459 | SV *bitspec = get_op_bitspec(aTHX_ opname, len, 1); |
6badd1a5 | 460 | if (SvIOK(bitspec)) { |
5d7488b2 | 461 | const int myopcode = SvIV(bitspec); |
3280af22 | 462 | if (myopcode < 0 || myopcode >= PL_maxo) |
6badd1a5 | 463 | croak("panic: opcode %d (%s) out of range",myopcode,opname); |
d3d34884 NC |
464 | XPUSHs(newSVpvn_flags(op_desc[myopcode], strlen(op_desc[myopcode]), |
465 | SVs_TEMP)); | |
6badd1a5 | 466 | } |
7c436af3 | 467 | else if (SvPOK(bitspec) && SvCUR(bitspec) == (STRLEN)opset_len) { |
6badd1a5 | 468 | int b, j; |
2596d9fe | 469 | const char * const bitmap = SvPV_nolen_const(bitspec); |
5d7488b2 | 470 | int myopcode = 0; |
6badd1a5 | 471 | for (b=0; b < opset_len; b++) { |
5d7488b2 | 472 | const U16 bits = bitmap[b]; |
3280af22 | 473 | for (j=0; j < 8 && myopcode < PL_maxo; j++, myopcode++) |
6badd1a5 | 474 | if (bits & (1 << j)) |
d3d34884 NC |
475 | XPUSHs(newSVpvn_flags(op_desc[myopcode], |
476 | strlen(op_desc[myopcode]), | |
477 | SVs_TEMP)); | |
6badd1a5 | 478 | } |
479 | } | |
480 | else | |
ff0cee69 | 481 | croak("panic: invalid bitspec for \"%s\" (type %u)", |
482 | opname, (unsigned)SvTYPE(bitspec)); | |
6badd1a5 | 483 | } |
484 | ||
485 | ||
486 | void | |
487 | define_optag(optagsv, mask) | |
488 | SV *optagsv | |
489 | SV *mask | |
4d8e9581 | 490 | CODE: |
6badd1a5 | 491 | STRLEN len; |
5d7488b2 | 492 | const char *optag = SvPV(optagsv, len); |
89ca4ac7 | 493 | |
cea2e8a9 | 494 | put_op_bitspec(aTHX_ optag, len, mask); /* croaks */ |
6b88bc9c | 495 | ST(0) = &PL_sv_yes; |
6badd1a5 | 496 | |
497 | ||
498 | void | |
499 | empty_opset() | |
4d8e9581 | 500 | CODE: |
cea2e8a9 | 501 | ST(0) = sv_2mortal(new_opset(aTHX_ Nullsv)); |
6badd1a5 | 502 | |
503 | void | |
504 | full_opset() | |
4d8e9581 | 505 | CODE: |
89ca4ac7 | 506 | dMY_CXT; |
cea2e8a9 | 507 | ST(0) = sv_2mortal(new_opset(aTHX_ opset_all)); |
6badd1a5 | 508 | |
509 | void | |
510 | opmask_add(opset) | |
511 | SV *opset | |
4d8e9581 | 512 | PREINIT: |
3280af22 | 513 | if (!PL_op_mask) |
a02a5408 | 514 | Newxz(PL_op_mask, PL_maxo, char); |
cea2e8a9 GS |
515 | CODE: |
516 | opmask_add(aTHX_ opset); | |
6badd1a5 | 517 | |
518 | void | |
519 | opcodes() | |
4d8e9581 | 520 | PPCODE: |
6badd1a5 | 521 | if (GIMME == G_ARRAY) { |
522 | croak("opcodes in list context not yet implemented"); /* XXX */ | |
523 | } | |
524 | else { | |
3280af22 | 525 | XPUSHs(sv_2mortal(newSViv(PL_maxo))); |
6badd1a5 | 526 | } |
527 | ||
528 | void | |
529 | opmask() | |
4d8e9581 | 530 | CODE: |
cea2e8a9 | 531 | ST(0) = sv_2mortal(new_opset(aTHX_ Nullsv)); |
3280af22 | 532 | if (PL_op_mask) { |
5d7488b2 | 533 | char * const bitmap = SvPVX(ST(0)); |
6badd1a5 | 534 | int myopcode; |
3280af22 NIS |
535 | for(myopcode=0; myopcode < PL_maxo; ++myopcode) { |
536 | if (PL_op_mask[myopcode]) | |
6badd1a5 | 537 | bitmap[myopcode >> 3] |= 1 << (myopcode & 0x07); |
538 | } | |
539 | } | |
540 |