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[ThirdParty] Added WRK and luajit for load testing.
author MrJuneJune <me@mrjunejune.com>
date Thu, 22 Jan 2026 20:10:30 -0800
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177:24fe8ff94056 178:94705b5986b3
1 /*
2 ** C type management.
3 ** Copyright (C) 2005-2023 Mike Pall. See Copyright Notice in luajit.h
4 */
5
6 #include "lj_obj.h"
7
8 #if LJ_HASFFI
9
10 #include "lj_gc.h"
11 #include "lj_err.h"
12 #include "lj_str.h"
13 #include "lj_tab.h"
14 #include "lj_strfmt.h"
15 #include "lj_ctype.h"
16 #include "lj_ccallback.h"
17 #include "lj_buf.h"
18
19 /* -- C type definitions -------------------------------------------------- */
20
21 /* Predefined typedefs. */
22 #define CTTDDEF(_) \
23 /* Vararg handling. */ \
24 _("va_list", P_VOID) \
25 _("__builtin_va_list", P_VOID) \
26 _("__gnuc_va_list", P_VOID) \
27 /* From stddef.h. */ \
28 _("ptrdiff_t", INT_PSZ) \
29 _("size_t", UINT_PSZ) \
30 _("wchar_t", WCHAR) \
31 /* Subset of stdint.h. */ \
32 _("int8_t", INT8) \
33 _("int16_t", INT16) \
34 _("int32_t", INT32) \
35 _("int64_t", INT64) \
36 _("uint8_t", UINT8) \
37 _("uint16_t", UINT16) \
38 _("uint32_t", UINT32) \
39 _("uint64_t", UINT64) \
40 _("intptr_t", INT_PSZ) \
41 _("uintptr_t", UINT_PSZ) \
42 /* From POSIX. */ \
43 _("ssize_t", INT_PSZ) \
44 /* End of typedef list. */
45
46 /* Keywords (only the ones we actually care for). */
47 #define CTKWDEF(_) \
48 /* Type specifiers. */ \
49 _("void", -1, CTOK_VOID) \
50 _("_Bool", 0, CTOK_BOOL) \
51 _("bool", 1, CTOK_BOOL) \
52 _("char", 1, CTOK_CHAR) \
53 _("int", 4, CTOK_INT) \
54 _("__int8", 1, CTOK_INT) \
55 _("__int16", 2, CTOK_INT) \
56 _("__int32", 4, CTOK_INT) \
57 _("__int64", 8, CTOK_INT) \
58 _("float", 4, CTOK_FP) \
59 _("double", 8, CTOK_FP) \
60 _("long", 0, CTOK_LONG) \
61 _("short", 0, CTOK_SHORT) \
62 _("_Complex", 0, CTOK_COMPLEX) \
63 _("complex", 0, CTOK_COMPLEX) \
64 _("__complex", 0, CTOK_COMPLEX) \
65 _("__complex__", 0, CTOK_COMPLEX) \
66 _("signed", 0, CTOK_SIGNED) \
67 _("__signed", 0, CTOK_SIGNED) \
68 _("__signed__", 0, CTOK_SIGNED) \
69 _("unsigned", 0, CTOK_UNSIGNED) \
70 /* Type qualifiers. */ \
71 _("const", 0, CTOK_CONST) \
72 _("__const", 0, CTOK_CONST) \
73 _("__const__", 0, CTOK_CONST) \
74 _("volatile", 0, CTOK_VOLATILE) \
75 _("__volatile", 0, CTOK_VOLATILE) \
76 _("__volatile__", 0, CTOK_VOLATILE) \
77 _("restrict", 0, CTOK_RESTRICT) \
78 _("__restrict", 0, CTOK_RESTRICT) \
79 _("__restrict__", 0, CTOK_RESTRICT) \
80 _("inline", 0, CTOK_INLINE) \
81 _("__inline", 0, CTOK_INLINE) \
82 _("__inline__", 0, CTOK_INLINE) \
83 /* Storage class specifiers. */ \
84 _("typedef", 0, CTOK_TYPEDEF) \
85 _("extern", 0, CTOK_EXTERN) \
86 _("static", 0, CTOK_STATIC) \
87 _("auto", 0, CTOK_AUTO) \
88 _("register", 0, CTOK_REGISTER) \
89 /* GCC Attributes. */ \
90 _("__extension__", 0, CTOK_EXTENSION) \
91 _("__attribute", 0, CTOK_ATTRIBUTE) \
92 _("__attribute__", 0, CTOK_ATTRIBUTE) \
93 _("asm", 0, CTOK_ASM) \
94 _("__asm", 0, CTOK_ASM) \
95 _("__asm__", 0, CTOK_ASM) \
96 /* MSVC Attributes. */ \
97 _("__declspec", 0, CTOK_DECLSPEC) \
98 _("__cdecl", CTCC_CDECL, CTOK_CCDECL) \
99 _("__thiscall", CTCC_THISCALL, CTOK_CCDECL) \
100 _("__fastcall", CTCC_FASTCALL, CTOK_CCDECL) \
101 _("__stdcall", CTCC_STDCALL, CTOK_CCDECL) \
102 _("__ptr32", 4, CTOK_PTRSZ) \
103 _("__ptr64", 8, CTOK_PTRSZ) \
104 /* Other type specifiers. */ \
105 _("struct", 0, CTOK_STRUCT) \
106 _("union", 0, CTOK_UNION) \
107 _("enum", 0, CTOK_ENUM) \
108 /* Operators. */ \
109 _("sizeof", 0, CTOK_SIZEOF) \
110 _("__alignof", 0, CTOK_ALIGNOF) \
111 _("__alignof__", 0, CTOK_ALIGNOF) \
112 /* End of keyword list. */
113
114 /* Type info for predefined types. Size merged in. */
115 static CTInfo lj_ctype_typeinfo[] = {
116 #define CTTYINFODEF(id, sz, ct, info) CTINFO((ct),(((sz)&0x3fu)<<10)+(info)),
117 #define CTTDINFODEF(name, id) CTINFO(CT_TYPEDEF, CTID_##id),
118 #define CTKWINFODEF(name, sz, kw) CTINFO(CT_KW,(((sz)&0x3fu)<<10)+(kw)),
119 CTTYDEF(CTTYINFODEF)
120 CTTDDEF(CTTDINFODEF)
121 CTKWDEF(CTKWINFODEF)
122 #undef CTTYINFODEF
123 #undef CTTDINFODEF
124 #undef CTKWINFODEF
125 0
126 };
127
128 /* Predefined type names collected in a single string. */
129 static const char * const lj_ctype_typenames =
130 #define CTTDNAMEDEF(name, id) name "\0"
131 #define CTKWNAMEDEF(name, sz, cds) name "\0"
132 CTTDDEF(CTTDNAMEDEF)
133 CTKWDEF(CTKWNAMEDEF)
134 #undef CTTDNAMEDEF
135 #undef CTKWNAMEDEF
136 ;
137
138 #define CTTYPEINFO_NUM (sizeof(lj_ctype_typeinfo)/sizeof(CTInfo)-1)
139 #ifdef LUAJIT_CTYPE_CHECK_ANCHOR
140 #define CTTYPETAB_MIN CTTYPEINFO_NUM
141 #else
142 #define CTTYPETAB_MIN 128
143 #endif
144
145 /* -- C type interning ---------------------------------------------------- */
146
147 #define ct_hashtype(info, size) (hashrot(info, size) & CTHASH_MASK)
148 #define ct_hashname(name) \
149 (hashrot(u32ptr(name), u32ptr(name) + HASH_BIAS) & CTHASH_MASK)
150
151 /* Create new type element. */
152 CTypeID lj_ctype_new(CTState *cts, CType **ctp)
153 {
154 CTypeID id = cts->top;
155 CType *ct;
156 lj_assertCTS(cts->L, "uninitialized cts->L");
157 if (LJ_UNLIKELY(id >= cts->sizetab)) {
158 if (id >= CTID_MAX) lj_err_msg(cts->L, LJ_ERR_TABOV);
159 #ifdef LUAJIT_CTYPE_CHECK_ANCHOR
160 ct = lj_mem_newvec(cts->L, id+1, CType);
161 memcpy(ct, cts->tab, id*sizeof(CType));
162 memset(cts->tab, 0, id*sizeof(CType));
163 lj_mem_freevec(cts->g, cts->tab, cts->sizetab, CType);
164 cts->tab = ct;
165 cts->sizetab = id+1;
166 #else
167 lj_mem_growvec(cts->L, cts->tab, cts->sizetab, CTID_MAX, CType);
168 #endif
169 }
170 cts->top = id+1;
171 *ctp = ct = &cts->tab[id];
172 ct->info = 0;
173 ct->size = 0;
174 ct->sib = 0;
175 ct->next = 0;
176 setgcrefnull(ct->name);
177 return id;
178 }
179
180 /* Intern a type element. */
181 CTypeID lj_ctype_intern(CTState *cts, CTInfo info, CTSize size)
182 {
183 uint32_t h = ct_hashtype(info, size);
184 CTypeID id = cts->hash[h];
185 lj_assertCTS(cts->L, "uninitialized cts->L");
186 while (id) {
187 CType *ct = ctype_get(cts, id);
188 if (ct->info == info && ct->size == size)
189 return id;
190 id = ct->next;
191 }
192 id = cts->top;
193 if (LJ_UNLIKELY(id >= cts->sizetab)) {
194 #ifdef LUAJIT_CTYPE_CHECK_ANCHOR
195 CType *ct;
196 #endif
197 if (id >= CTID_MAX) lj_err_msg(cts->L, LJ_ERR_TABOV);
198 #ifdef LUAJIT_CTYPE_CHECK_ANCHOR
199 ct = lj_mem_newvec(cts->L, id+1, CType);
200 memcpy(ct, cts->tab, id*sizeof(CType));
201 memset(cts->tab, 0, id*sizeof(CType));
202 lj_mem_freevec(cts->g, cts->tab, cts->sizetab, CType);
203 cts->tab = ct;
204 cts->sizetab = id+1;
205 #else
206 lj_mem_growvec(cts->L, cts->tab, cts->sizetab, CTID_MAX, CType);
207 #endif
208 }
209 cts->top = id+1;
210 cts->tab[id].info = info;
211 cts->tab[id].size = size;
212 cts->tab[id].sib = 0;
213 cts->tab[id].next = cts->hash[h];
214 setgcrefnull(cts->tab[id].name);
215 cts->hash[h] = (CTypeID1)id;
216 return id;
217 }
218
219 /* Add type element to hash table. */
220 static void ctype_addtype(CTState *cts, CType *ct, CTypeID id)
221 {
222 uint32_t h = ct_hashtype(ct->info, ct->size);
223 ct->next = cts->hash[h];
224 cts->hash[h] = (CTypeID1)id;
225 }
226
227 /* Add named element to hash table. */
228 void lj_ctype_addname(CTState *cts, CType *ct, CTypeID id)
229 {
230 uint32_t h = ct_hashname(gcref(ct->name));
231 ct->next = cts->hash[h];
232 cts->hash[h] = (CTypeID1)id;
233 }
234
235 /* Get a C type by name, matching the type mask. */
236 CTypeID lj_ctype_getname(CTState *cts, CType **ctp, GCstr *name, uint32_t tmask)
237 {
238 CTypeID id = cts->hash[ct_hashname(name)];
239 while (id) {
240 CType *ct = ctype_get(cts, id);
241 if (gcref(ct->name) == obj2gco(name) &&
242 ((tmask >> ctype_type(ct->info)) & 1)) {
243 *ctp = ct;
244 return id;
245 }
246 id = ct->next;
247 }
248 *ctp = &cts->tab[0]; /* Simplify caller logic. ctype_get() would assert. */
249 return 0;
250 }
251
252 /* Get a struct/union/enum/function field by name. */
253 CType *lj_ctype_getfieldq(CTState *cts, CType *ct, GCstr *name, CTSize *ofs,
254 CTInfo *qual)
255 {
256 while (ct->sib) {
257 ct = ctype_get(cts, ct->sib);
258 if (gcref(ct->name) == obj2gco(name)) {
259 *ofs = ct->size;
260 return ct;
261 }
262 if (ctype_isxattrib(ct->info, CTA_SUBTYPE)) {
263 CType *fct, *cct = ctype_child(cts, ct);
264 CTInfo q = 0;
265 while (ctype_isattrib(cct->info)) {
266 if (ctype_attrib(cct->info) == CTA_QUAL) q |= cct->size;
267 cct = ctype_child(cts, cct);
268 }
269 fct = lj_ctype_getfieldq(cts, cct, name, ofs, qual);
270 if (fct) {
271 if (qual) *qual |= q;
272 *ofs += ct->size;
273 return fct;
274 }
275 }
276 }
277 return NULL; /* Not found. */
278 }
279
280 /* -- C type information -------------------------------------------------- */
281
282 /* Follow references and get raw type for a C type ID. */
283 CType *lj_ctype_rawref(CTState *cts, CTypeID id)
284 {
285 CType *ct = ctype_get(cts, id);
286 while (ctype_isattrib(ct->info) || ctype_isref(ct->info))
287 ct = ctype_child(cts, ct);
288 return ct;
289 }
290
291 /* Get size for a C type ID. Does NOT support VLA/VLS. */
292 CTSize lj_ctype_size(CTState *cts, CTypeID id)
293 {
294 CType *ct = ctype_raw(cts, id);
295 return ctype_hassize(ct->info) ? ct->size : CTSIZE_INVALID;
296 }
297
298 /* Get size for a variable-length C type. Does NOT support other C types. */
299 CTSize lj_ctype_vlsize(CTState *cts, CType *ct, CTSize nelem)
300 {
301 uint64_t xsz = 0;
302 if (ctype_isstruct(ct->info)) {
303 CTypeID arrid = 0, fid = ct->sib;
304 xsz = ct->size; /* Add the struct size. */
305 while (fid) {
306 CType *ctf = ctype_get(cts, fid);
307 if (ctype_type(ctf->info) == CT_FIELD)
308 arrid = ctype_cid(ctf->info); /* Remember last field of VLS. */
309 fid = ctf->sib;
310 }
311 ct = ctype_raw(cts, arrid);
312 }
313 lj_assertCTS(ctype_isvlarray(ct->info), "VLA expected");
314 ct = ctype_rawchild(cts, ct); /* Get array element. */
315 lj_assertCTS(ctype_hassize(ct->info), "bad VLA without size");
316 /* Calculate actual size of VLA and check for overflow. */
317 xsz += (uint64_t)ct->size * nelem;
318 return xsz < 0x80000000u ? (CTSize)xsz : CTSIZE_INVALID;
319 }
320
321 /* Get type, qualifiers, size and alignment for a C type ID. */
322 CTInfo lj_ctype_info(CTState *cts, CTypeID id, CTSize *szp)
323 {
324 CTInfo qual = 0;
325 CType *ct = ctype_get(cts, id);
326 for (;;) {
327 CTInfo info = ct->info;
328 if (ctype_isenum(info)) {
329 /* Follow child. Need to look at its attributes, too. */
330 } else if (ctype_isattrib(info)) {
331 if (ctype_isxattrib(info, CTA_QUAL))
332 qual |= ct->size;
333 else if (ctype_isxattrib(info, CTA_ALIGN) && !(qual & CTFP_ALIGNED))
334 qual |= CTFP_ALIGNED + CTALIGN(ct->size);
335 } else {
336 if (!(qual & CTFP_ALIGNED)) qual |= (info & CTF_ALIGN);
337 qual |= (info & ~(CTF_ALIGN|CTMASK_CID));
338 lj_assertCTS(ctype_hassize(info) || ctype_isfunc(info),
339 "ctype without size");
340 *szp = ctype_isfunc(info) ? CTSIZE_INVALID : ct->size;
341 break;
342 }
343 ct = ctype_get(cts, ctype_cid(info));
344 }
345 return qual;
346 }
347
348 /* Ditto, but follow a reference. */
349 CTInfo lj_ctype_info_raw(CTState *cts, CTypeID id, CTSize *szp)
350 {
351 CType *ct = ctype_get(cts, id);
352 if (ctype_isref(ct->info)) id = ctype_cid(ct->info);
353 return lj_ctype_info(cts, id, szp);
354 }
355
356 /* Get ctype metamethod. */
357 cTValue *lj_ctype_meta(CTState *cts, CTypeID id, MMS mm)
358 {
359 CType *ct = ctype_get(cts, id);
360 cTValue *tv;
361 while (ctype_isattrib(ct->info) || ctype_isref(ct->info)) {
362 id = ctype_cid(ct->info);
363 ct = ctype_get(cts, id);
364 }
365 if (ctype_isptr(ct->info) &&
366 ctype_isfunc(ctype_get(cts, ctype_cid(ct->info))->info))
367 tv = lj_tab_getstr(cts->miscmap, &cts->g->strempty);
368 else
369 tv = lj_tab_getinth(cts->miscmap, -(int32_t)id);
370 if (tv && tvistab(tv) &&
371 (tv = lj_tab_getstr(tabV(tv), mmname_str(cts->g, mm))) && !tvisnil(tv))
372 return tv;
373 return NULL;
374 }
375
376 /* -- C type representation ----------------------------------------------- */
377
378 /* Fixed max. length of a C type representation. */
379 #define CTREPR_MAX 512
380
381 typedef struct CTRepr {
382 char *pb, *pe;
383 CTState *cts;
384 lua_State *L;
385 int needsp;
386 int ok;
387 char buf[CTREPR_MAX];
388 } CTRepr;
389
390 /* Prepend string. */
391 static void ctype_prepstr(CTRepr *ctr, const char *str, MSize len)
392 {
393 char *p = ctr->pb;
394 if (ctr->buf + len+1 > p) { ctr->ok = 0; return; }
395 if (ctr->needsp) *--p = ' ';
396 ctr->needsp = 1;
397 p -= len;
398 while (len-- > 0) p[len] = str[len];
399 ctr->pb = p;
400 }
401
402 #define ctype_preplit(ctr, str) ctype_prepstr((ctr), "" str, sizeof(str)-1)
403
404 /* Prepend char. */
405 static void ctype_prepc(CTRepr *ctr, int c)
406 {
407 if (ctr->buf >= ctr->pb) { ctr->ok = 0; return; }
408 *--ctr->pb = c;
409 }
410
411 /* Prepend number. */
412 static void ctype_prepnum(CTRepr *ctr, uint32_t n)
413 {
414 char *p = ctr->pb;
415 if (ctr->buf + 10+1 > p) { ctr->ok = 0; return; }
416 do { *--p = (char)('0' + n % 10); } while (n /= 10);
417 ctr->pb = p;
418 ctr->needsp = 0;
419 }
420
421 /* Append char. */
422 static void ctype_appc(CTRepr *ctr, int c)
423 {
424 if (ctr->pe >= ctr->buf + CTREPR_MAX) { ctr->ok = 0; return; }
425 *ctr->pe++ = c;
426 }
427
428 /* Append number. */
429 static void ctype_appnum(CTRepr *ctr, uint32_t n)
430 {
431 char buf[10];
432 char *p = buf+sizeof(buf);
433 char *q = ctr->pe;
434 if (q > ctr->buf + CTREPR_MAX - 10) { ctr->ok = 0; return; }
435 do { *--p = (char)('0' + n % 10); } while (n /= 10);
436 do { *q++ = *p++; } while (p < buf+sizeof(buf));
437 ctr->pe = q;
438 }
439
440 /* Prepend qualifiers. */
441 static void ctype_prepqual(CTRepr *ctr, CTInfo info)
442 {
443 if ((info & CTF_VOLATILE)) ctype_preplit(ctr, "volatile");
444 if ((info & CTF_CONST)) ctype_preplit(ctr, "const");
445 }
446
447 /* Prepend named type. */
448 static void ctype_preptype(CTRepr *ctr, CType *ct, CTInfo qual, const char *t)
449 {
450 if (gcref(ct->name)) {
451 GCstr *str = gco2str(gcref(ct->name));
452 ctype_prepstr(ctr, strdata(str), str->len);
453 } else {
454 if (ctr->needsp) ctype_prepc(ctr, ' ');
455 ctype_prepnum(ctr, ctype_typeid(ctr->cts, ct));
456 ctr->needsp = 1;
457 }
458 ctype_prepstr(ctr, t, (MSize)strlen(t));
459 ctype_prepqual(ctr, qual);
460 }
461
462 static void ctype_repr(CTRepr *ctr, CTypeID id)
463 {
464 CType *ct = ctype_get(ctr->cts, id);
465 CTInfo qual = 0;
466 int ptrto = 0;
467 for (;;) {
468 CTInfo info = ct->info;
469 CTSize size = ct->size;
470 switch (ctype_type(info)) {
471 case CT_NUM:
472 if ((info & CTF_BOOL)) {
473 ctype_preplit(ctr, "bool");
474 } else if ((info & CTF_FP)) {
475 if (size == sizeof(double)) ctype_preplit(ctr, "double");
476 else if (size == sizeof(float)) ctype_preplit(ctr, "float");
477 else ctype_preplit(ctr, "long double");
478 } else if (size == 1) {
479 if (!((info ^ CTF_UCHAR) & CTF_UNSIGNED)) ctype_preplit(ctr, "char");
480 else if (CTF_UCHAR) ctype_preplit(ctr, "signed char");
481 else ctype_preplit(ctr, "unsigned char");
482 } else if (size < 8) {
483 if (size == 4) ctype_preplit(ctr, "int");
484 else ctype_preplit(ctr, "short");
485 if ((info & CTF_UNSIGNED)) ctype_preplit(ctr, "unsigned");
486 } else {
487 ctype_preplit(ctr, "_t");
488 ctype_prepnum(ctr, size*8);
489 ctype_preplit(ctr, "int");
490 if ((info & CTF_UNSIGNED)) ctype_prepc(ctr, 'u');
491 }
492 ctype_prepqual(ctr, (qual|info));
493 return;
494 case CT_VOID:
495 ctype_preplit(ctr, "void");
496 ctype_prepqual(ctr, (qual|info));
497 return;
498 case CT_STRUCT:
499 ctype_preptype(ctr, ct, qual, (info & CTF_UNION) ? "union" : "struct");
500 return;
501 case CT_ENUM:
502 if (id == CTID_CTYPEID) {
503 ctype_preplit(ctr, "ctype");
504 return;
505 }
506 ctype_preptype(ctr, ct, qual, "enum");
507 return;
508 case CT_ATTRIB:
509 if (ctype_attrib(info) == CTA_QUAL) qual |= size;
510 break;
511 case CT_PTR:
512 if ((info & CTF_REF)) {
513 ctype_prepc(ctr, '&');
514 } else {
515 ctype_prepqual(ctr, (qual|info));
516 if (LJ_64 && size == 4) ctype_preplit(ctr, "__ptr32");
517 ctype_prepc(ctr, '*');
518 }
519 qual = 0;
520 ptrto = 1;
521 ctr->needsp = 1;
522 break;
523 case CT_ARRAY:
524 if (ctype_isrefarray(info)) {
525 ctr->needsp = 1;
526 if (ptrto) { ptrto = 0; ctype_prepc(ctr, '('); ctype_appc(ctr, ')'); }
527 ctype_appc(ctr, '[');
528 if (size != CTSIZE_INVALID) {
529 CTSize csize = ctype_child(ctr->cts, ct)->size;
530 ctype_appnum(ctr, csize ? size/csize : 0);
531 } else if ((info & CTF_VLA)) {
532 ctype_appc(ctr, '?');
533 }
534 ctype_appc(ctr, ']');
535 } else if ((info & CTF_COMPLEX)) {
536 if (size == 2*sizeof(float)) ctype_preplit(ctr, "float");
537 ctype_preplit(ctr, "complex");
538 return;
539 } else {
540 ctype_preplit(ctr, ")))");
541 ctype_prepnum(ctr, size);
542 ctype_preplit(ctr, "__attribute__((vector_size(");
543 }
544 break;
545 case CT_FUNC:
546 ctr->needsp = 1;
547 if (ptrto) { ptrto = 0; ctype_prepc(ctr, '('); ctype_appc(ctr, ')'); }
548 ctype_appc(ctr, '(');
549 ctype_appc(ctr, ')');
550 break;
551 default:
552 lj_assertG_(ctr->cts->g, 0, "bad ctype %08x", info);
553 break;
554 }
555 ct = ctype_get(ctr->cts, ctype_cid(info));
556 }
557 }
558
559 /* Return a printable representation of a C type. */
560 GCstr *lj_ctype_repr(lua_State *L, CTypeID id, GCstr *name)
561 {
562 global_State *g = G(L);
563 CTRepr ctr;
564 ctr.pb = ctr.pe = &ctr.buf[CTREPR_MAX/2];
565 ctr.cts = ctype_ctsG(g);
566 ctr.L = L;
567 ctr.ok = 1;
568 ctr.needsp = 0;
569 if (name) ctype_prepstr(&ctr, strdata(name), name->len);
570 ctype_repr(&ctr, id);
571 if (LJ_UNLIKELY(!ctr.ok)) return lj_str_newlit(L, "?");
572 return lj_str_new(L, ctr.pb, ctr.pe - ctr.pb);
573 }
574
575 /* Convert int64_t/uint64_t to string with 'LL' or 'ULL' suffix. */
576 GCstr *lj_ctype_repr_int64(lua_State *L, uint64_t n, int isunsigned)
577 {
578 char buf[1+20+3];
579 char *p = buf+sizeof(buf);
580 int sign = 0;
581 *--p = 'L'; *--p = 'L';
582 if (isunsigned) {
583 *--p = 'U';
584 } else if ((int64_t)n < 0) {
585 n = ~n+1u;
586 sign = 1;
587 }
588 do { *--p = (char)('0' + n % 10); } while (n /= 10);
589 if (sign) *--p = '-';
590 return lj_str_new(L, p, (size_t)(buf+sizeof(buf)-p));
591 }
592
593 /* Convert complex to string with 'i' or 'I' suffix. */
594 GCstr *lj_ctype_repr_complex(lua_State *L, void *sp, CTSize size)
595 {
596 SBuf *sb = lj_buf_tmp_(L);
597 TValue re, im;
598 if (size == 2*sizeof(double)) {
599 re.n = *(double *)sp; im.n = ((double *)sp)[1];
600 } else {
601 re.n = (double)*(float *)sp; im.n = (double)((float *)sp)[1];
602 }
603 lj_strfmt_putfnum(sb, STRFMT_G14, re.n);
604 if (!(im.u32.hi & 0x80000000u) || im.n != im.n) lj_buf_putchar(sb, '+');
605 lj_strfmt_putfnum(sb, STRFMT_G14, im.n);
606 lj_buf_putchar(sb, sb->w[-1] >= 'a' ? 'I' : 'i');
607 return lj_buf_str(L, sb);
608 }
609
610 /* -- C type state -------------------------------------------------------- */
611
612 /* Initialize C type table and state. */
613 CTState *lj_ctype_init(lua_State *L)
614 {
615 CTState *cts = lj_mem_newt(L, sizeof(CTState), CTState);
616 CType *ct = lj_mem_newvec(L, CTTYPETAB_MIN, CType);
617 const char *name = lj_ctype_typenames;
618 CTypeID id;
619 memset(cts, 0, sizeof(CTState));
620 cts->tab = ct;
621 cts->sizetab = CTTYPETAB_MIN;
622 cts->top = CTTYPEINFO_NUM;
623 cts->L = NULL;
624 cts->g = G(L);
625 for (id = 0; id < CTTYPEINFO_NUM; id++, ct++) {
626 CTInfo info = lj_ctype_typeinfo[id];
627 ct->size = (CTSize)((int32_t)(info << 16) >> 26);
628 ct->info = info & 0xffff03ffu;
629 ct->sib = 0;
630 if (ctype_type(info) == CT_KW || ctype_istypedef(info)) {
631 size_t len = strlen(name);
632 GCstr *str = lj_str_new(L, name, len);
633 ctype_setname(ct, str);
634 name += len+1;
635 lj_ctype_addname(cts, ct, id);
636 } else {
637 setgcrefnull(ct->name);
638 ct->next = 0;
639 if (!ctype_isenum(info)) ctype_addtype(cts, ct, id);
640 }
641 }
642 setmref(G(L)->ctype_state, cts);
643 return cts;
644 }
645
646 /* Free C type table and state. */
647 void lj_ctype_freestate(global_State *g)
648 {
649 CTState *cts = ctype_ctsG(g);
650 if (cts) {
651 lj_ccallback_mcode_free(cts);
652 lj_mem_freevec(g, cts->tab, cts->sizetab, CType);
653 lj_mem_freevec(g, cts->cb.cbid, cts->cb.sizeid, CTypeID1);
654 lj_mem_freet(g, cts);
655 }
656 }
657
658 #endif