src/lj_ctype.h

   1 /*
   2 ** C type management.
   3 ** Copyright (C) 2005-2011 Mike Pall. See Copyright Notice in luajit.h
   4 */
   5
   6 #ifndef _LJ_CTYPE_H
   7 #define _LJ_CTYPE_H
   8
   9 #include "lj_obj.h"
  10 #include "lj_gc.h"
  11
  12 #if LJ_HASFFI
  13
  14 /* -- C type definitions -------------------------------------------------- */
  15
  16 /* C type numbers. Highest 4 bits of C type info. ORDER CT. */
  17 enum {
  18   /* Externally visible types. */
  19   CT_NUM,               /* Integer or floating-point numbers. */
  20   CT_STRUCT,            /* Struct or union. */
  21   CT_PTR,               /* Pointer or reference. */
  22   CT_ARRAY,             /* Array or complex type. */
  23   CT_MAYCONVERT = CT_ARRAY,
  24   CT_VOID,              /* Void type. */
  25   CT_ENUM,              /* Enumeration. */
  26   CT_HASSIZE = CT_ENUM,  /* Last type where ct->size holds the actual size. */
  27   CT_FUNC,              /* Function. */
  28   CT_TYPEDEF,           /* Typedef. */
  29   CT_ATTRIB,            /* Miscellaneous attributes. */
  30   /* Internal element types. */
  31   CT_FIELD,             /* Struct/union field or function parameter. */
  32   CT_BITFIELD,          /* Struct/union bitfield. */
  33   CT_CONSTVAL,          /* Constant value. */
  34   CT_EXTERN,            /* External reference. */
  35   CT_KW                 /* Keyword. */
  36 };
  37
  38 LJ_STATIC_ASSERT(((int)CT_PTR & (int)CT_ARRAY) == CT_PTR);
  39 LJ_STATIC_ASSERT(((int)CT_STRUCT & (int)CT_ARRAY) == CT_STRUCT);
  40
  41 /*
  42 **  ---------- info ------------
  43 ** |type      flags...  A   cid | size   |  sib  | next  | name  |
  44 ** +----------------------------+--------+-------+-------+-------+--
  45 ** |NUM       BFvcUL..  A       | size   |       | type  |       |
  46 ** |STRUCT    ..vcU..V  A       | size   | field | name? | name? |
  47 ** |PTR       ..vcR...  A   cid | size   |       | type  |       |
  48 ** |ARRAY     VCvc...V  A   cid | size   |       | type  |       |
  49 ** |VOID      ..vc....  A       | size   |       | type  |       |
  50 ** |ENUM                A   cid | size   | const | name? | name? |
  51 ** |FUNC      ....VS.. cc   cid | nargs  | field | name? | name? |
  52 ** |TYPEDEF                 cid |        |       | name  | name  |
  53 ** |ATTRIB        attrnum   cid | attr   | sib?  | type? |       |
  54 ** |FIELD                   cid | offset | field |       | name? |
  55 ** |BITFIELD  B.vcU csz bsz pos | offset | field |       | name? |
  56 ** |CONSTVAL     c          cid | value  | const | name  | name  |
  57 ** |EXTERN                  cid |        | sib?  | name  | name  |
  58 ** |KW                      tok | size   |       | name  | name  |
  59 ** +----------------------------+--------+-------+-------+-------+--
  60 **        ^^  ^^--- bits used for C type conversion dispatch
  61 */
  62
  63 /* C type info flags.     TFFArrrr  */
  64 #define CTF_BOOL        0x08000000u     /* Boolean: NUM, BITFIELD. */
  65 #define CTF_FP          0x04000000u     /* Floating-point: NUM. */
  66 #define CTF_CONST       0x02000000u     /* Const qualifier. */
  67 #define CTF_VOLATILE    0x01000000u     /* Volatile qualifier. */
  68 #define CTF_UNSIGNED    0x00800000u     /* Unsigned: NUM, BITFIELD. */
  69 #define CTF_LONG        0x00400000u     /* Long: NUM. */
  70 #define CTF_VLA         0x00100000u     /* Variable-length: ARRAY, STRUCT. */
  71 #define CTF_REF         0x00800000u     /* Reference: PTR. */
  72 #define CTF_VECTOR      0x08000000u     /* Vector: ARRAY. */
  73 #define CTF_COMPLEX     0x04000000u     /* Complex: ARRAY. */
  74 #define CTF_UNION       0x00800000u     /* Union: STRUCT. */
  75 #define CTF_VARARG      0x00800000u     /* Vararg: FUNC. */
  76 #define CTF_SSEREGPARM  0x00400000u     /* SSE register parameters: FUNC. */
  77
  78 #define CTF_QUAL        (CTF_CONST|CTF_VOLATILE)
  79 #define CTF_ALIGN       (CTMASK_ALIGN<<CTSHIFT_ALIGN)
  80 #define CTF_UCHAR       ((char)-1 > 0 ? CTF_UNSIGNED : 0)
  81
  82 /* Flags used in parser.  .F.Ammvf   cp->attr  */
  83 #define CTFP_ALIGNED    0x00000001u     /* cp->attr + ALIGN */
  84 #define CTFP_PACKED     0x00000002u     /* cp->attr */
  85 /*                        ...C...f   cp->fattr */
  86 #define CTFP_CCONV      0x00000001u     /* cp->fattr + CCONV/[SSE]REGPARM */
  87
  88 /* C type info bitfields. */
  89 #define CTMASK_CID      0x0000ffffu     /* Max. 65536 type IDs. */
  90 #define CTMASK_NUM      0xf0000000u     /* Max. 16 type numbers. */
  91 #define CTSHIFT_NUM     28
  92 #define CTMASK_ALIGN    15              /* Max. alignment is 2^15. */
  93 #define CTSHIFT_ALIGN   16
  94 #define CTMASK_ATTRIB   255             /* Max. 256 attributes. */
  95 #define CTSHIFT_ATTRIB  16
  96 #define CTMASK_CCONV    3               /* Max. 4 calling conventions. */
  97 #define CTSHIFT_CCONV   16
  98 #define CTMASK_REGPARM  3               /* Max. 0-3 regparms. */
  99 #define CTSHIFT_REGPARM 18
 100 /* Bitfields only used in parser. */
 101 #define CTMASK_VSIZEP   15              /* Max. vector size is 2^15. */
 102 #define CTSHIFT_VSIZEP  4
 103 #define CTMASK_MSIZEP   255             /* Max. type size (via mode) is 128. */
 104 #define CTSHIFT_MSIZEP  8
 105
 106 /* Info bits for BITFIELD. Max. size of bitfield is 64 bits. */
 107 #define CTBSZ_MAX       32              /* Max. size of bitfield is 32 bit. */
 108 #define CTBSZ_FIELD     127             /* Temp. marker for regular field. */
 109 #define CTMASK_BITPOS   127
 110 #define CTMASK_BITBSZ   127
 111 #define CTMASK_BITCSZ   127
 112 #define CTSHIFT_BITPOS  0
 113 #define CTSHIFT_BITBSZ  8
 114 #define CTSHIFT_BITCSZ  16
 115
 116 #define CTF_INSERT(info, field, val) \
 117   info = (info & ~(CTMASK_##field<<CTSHIFT_##field)) | \
 118           (((CTSize)(val) & CTMASK_##field) << CTSHIFT_##field)
 119
 120 /* Calling conventions. */
 121 enum { CTCC_CDECL, CTCC_THISCALL, CTCC_FASTCALL, CTCC_STDCALL };
 122
 123 /* Attribute numbers. */
 124 enum {
 125   CTA_NONE,             /* Ignored attribute. Must be zero. */
 126   CTA_QUAL,             /* Unmerged qualifiers. */
 127   CTA_ALIGN,            /* Alignment override. */
 128   CTA_SUBTYPE,          /* Transparent sub-type. */
 129   CTA_REDIR,            /* Redirected symbol name. */
 130   CTA_BAD,              /* To catch bad IDs. */
 131   CTA__MAX
 132 };
 133
 134 /* Special sizes. */
 135 #define CTSIZE_INVALID  0xffffffffu
 136
 137 typedef uint32_t CTInfo;        /* Type info. */
 138 typedef uint32_t CTSize;        /* Type size. */
 139 typedef uint32_t CTypeID;       /* Type ID. */
 140 typedef uint16_t CTypeID1;      /* Minimum-sized type ID. */
 141
 142 /* C type table element. */
 143 typedef struct CType {
 144   CTInfo info;          /* Type info. */
 145   CTSize size;          /* Type size or other info. */
 146   CTypeID1 sib;         /* Sibling element. */
 147   CTypeID1 next;        /* Next element in hash chain. */
 148   GCRef name;           /* Element name (GCstr). */
 149 } CType;
 150
 151 #define CTHASH_SIZE     128     /* Number of hash anchors. */
 152 #define CTHASH_MASK     (CTHASH_SIZE-1)
 153
 154 /* C type state. */
 155 typedef struct CTState {
 156   CType *tab;           /* C type table. */
 157   CTypeID top;          /* Current top of C type table. */
 158   MSize sizetab;        /* Size of C type table. */
 159   lua_State *L;         /* Lua state (needed for errors and allocations). */
 160   global_State *g;      /* Global state. */
 161   GCtab *finalizer;     /* Map of cdata to finalizer. */
 162   GCtab *metatype;      /* Map of CTypeID to metatable. */
 163   CTypeID1 hash[CTHASH_SIZE];  /* Hash anchors for C type table. */
 164 } CTState;
 165
 166 #define CTINFO(ct, flags)       (((CTInfo)(ct) << CTSHIFT_NUM) + (flags))
 167 #define CTALIGN(al)             ((CTSize)(al) << CTSHIFT_ALIGN)
 168 #define CTATTRIB(at)            ((CTInfo)(at) << CTSHIFT_ATTRIB)
 169
 170 #define ctype_type(info)        ((info) >> CTSHIFT_NUM)
 171 #define ctype_cid(info)         ((CTypeID)((info) & CTMASK_CID))
 172 #define ctype_align(info)       (((info) >> CTSHIFT_ALIGN) & CTMASK_ALIGN)
 173 #define ctype_attrib(info)      (((info) >> CTSHIFT_ATTRIB) & CTMASK_ATTRIB)
 174 #define ctype_bitpos(info)      (((info) >> CTSHIFT_BITPOS) & CTMASK_BITPOS)
 175 #define ctype_bitbsz(info)      (((info) >> CTSHIFT_BITBSZ) & CTMASK_BITBSZ)
 176 #define ctype_bitcsz(info)      (((info) >> CTSHIFT_BITCSZ) & CTMASK_BITCSZ)
 177 #define ctype_vsizeP(info)      (((info) >> CTSHIFT_VSIZEP) & CTMASK_VSIZEP)
 178 #define ctype_msizeP(info)      (((info) >> CTSHIFT_MSIZEP) & CTMASK_MSIZEP)
 179 #define ctype_cconv(info)       (((info) >> CTSHIFT_CCONV) & CTMASK_CCONV)
 180
 181 /* Simple type checks. */
 182 #define ctype_isnum(info)       (ctype_type((info)) == CT_NUM)
 183 #define ctype_isvoid(info)      (ctype_type((info)) == CT_VOID)
 184 #define ctype_isptr(info)       (ctype_type((info)) == CT_PTR)
 185 #define ctype_isarray(info)     (ctype_type((info)) == CT_ARRAY)
 186 #define ctype_isstruct(info)    (ctype_type((info)) == CT_STRUCT)
 187 #define ctype_isfunc(info)      (ctype_type((info)) == CT_FUNC)
 188 #define ctype_isenum(info)      (ctype_type((info)) == CT_ENUM)
 189 #define ctype_istypedef(info)   (ctype_type((info)) == CT_TYPEDEF)
 190 #define ctype_isattrib(info)    (ctype_type((info)) == CT_ATTRIB)
 191 #define ctype_isfield(info)     (ctype_type((info)) == CT_FIELD)
 192 #define ctype_isbitfield(info)  (ctype_type((info)) == CT_BITFIELD)
 193 #define ctype_isconstval(info)  (ctype_type((info)) == CT_CONSTVAL)
 194 #define ctype_isextern(info)    (ctype_type((info)) == CT_EXTERN)
 195 #define ctype_hassize(info)     (ctype_type((info)) <= CT_HASSIZE)
 196
 197 /* Combined type and flag checks. */
 198 #define ctype_isinteger(info) \
 199   (((info) & (CTMASK_NUM|CTF_BOOL|CTF_FP)) == CTINFO(CT_NUM, 0))
 200 #define ctype_isinteger_or_bool(info) \
 201   (((info) & (CTMASK_NUM|CTF_FP)) == CTINFO(CT_NUM, 0))
 202 #define ctype_isbool(info) \
 203   (((info) & (CTMASK_NUM|CTF_BOOL)) == CTINFO(CT_NUM, CTF_BOOL))
 204 #define ctype_isfp(info) \
 205   (((info) & (CTMASK_NUM|CTF_FP)) == CTINFO(CT_NUM, CTF_FP))
 206
 207 #define ctype_ispointer(info) \
 208   ((ctype_type(info) >> 1) == (CT_PTR >> 1))  /* Pointer or array. */
 209 #define ctype_isref(info) \
 210   (((info) & (CTMASK_NUM|CTF_REF)) == CTINFO(CT_PTR, CTF_REF))
 211
 212 #define ctype_isrefarray(info) \
 213   (((info) & (CTMASK_NUM|CTF_VECTOR|CTF_COMPLEX)) == CTINFO(CT_ARRAY, 0))
 214 #define ctype_isvector(info) \
 215   (((info) & (CTMASK_NUM|CTF_VECTOR)) == CTINFO(CT_ARRAY, CTF_VECTOR))
 216 #define ctype_iscomplex(info) \
 217   (((info) & (CTMASK_NUM|CTF_COMPLEX)) == CTINFO(CT_ARRAY, CTF_COMPLEX))
 218
 219 #define ctype_isvltype(info) \
 220   (((info) & ((CTMASK_NUM|CTF_VLA) - (2u<<CTSHIFT_NUM))) == \
 221    CTINFO(CT_STRUCT, CTF_VLA))  /* VL array or VL struct. */
 222 #define ctype_isvlarray(info) \
 223   (((info) & (CTMASK_NUM|CTF_VLA)) == CTINFO(CT_ARRAY, CTF_VLA))
 224
 225 #define ctype_isxattrib(info, at) \
 226   (((info) & (CTMASK_NUM|CTATTRIB(CTMASK_ATTRIB))) == \
 227    CTINFO(CT_ATTRIB, CTATTRIB(at)))
 228
 229 /* Target-dependent sizes and alignments. */
 230 #if LJ_64
 231 #define CTSIZE_PTR      8
 232 #define CTALIGN_PTR     CTALIGN(3)
 233 #else
 234 #define CTSIZE_PTR      4
 235 #define CTALIGN_PTR     CTALIGN(2)
 236 #endif
 237
 238 #define CTINFO_REF(ref) \
 239   CTINFO(CT_PTR, (CTF_CONST|CTF_REF|CTALIGN_PTR) + (ref))
 240
 241 #define CT_MEMALIGN     3       /* Alignment guaranteed by memory allocator. */
 242
 243 /* -- Predefined types ---------------------------------------------------- */
 244
 245 /* Target-dependent types. */
 246 #if LJ_TARGET_PPC || LJ_TARGET_PPCSPE
 247 #define CTTYDEFP(_) \
 248   _(LINT32,             4,      CT_NUM, CTF_LONG|CTALIGN(2))
 249 #else
 250 #define CTTYDEFP(_)
 251 #endif
 252
 253 /* Common types. */
 254 #define CTTYDEF(_) \
 255   _(NONE,               0,      CT_ATTRIB, CTATTRIB(CTA_BAD)) \
 256   _(VOID,               -1,     CT_VOID, CTALIGN(0)) \
 257   _(CVOID,              -1,     CT_VOID, CTF_CONST|CTALIGN(0)) \
 258   _(BOOL,               1,      CT_NUM, CTF_BOOL|CTF_UNSIGNED|CTALIGN(0)) \
 259   _(CCHAR,              1,      CT_NUM, CTF_CONST|CTF_UCHAR|CTALIGN(0)) \
 260   _(INT8,               1,      CT_NUM, CTALIGN(0)) \
 261   _(UINT8,              1,      CT_NUM, CTF_UNSIGNED|CTALIGN(0)) \
 262   _(INT16,              2,      CT_NUM, CTALIGN(1)) \
 263   _(UINT16,             2,      CT_NUM, CTF_UNSIGNED|CTALIGN(1)) \
 264   _(INT32,              4,      CT_NUM, CTALIGN(2)) \
 265   _(UINT32,             4,      CT_NUM, CTF_UNSIGNED|CTALIGN(2)) \
 266   _(INT64,              8,      CT_NUM, CTF_LONG|CTALIGN(3)) \
 267   _(UINT64,             8,      CT_NUM, CTF_UNSIGNED|CTF_LONG|CTALIGN(3)) \
 268   _(FLOAT,              4,      CT_NUM, CTF_FP|CTALIGN(2)) \
 269   _(DOUBLE,             8,      CT_NUM, CTF_FP|CTALIGN(3)) \
 270   _(COMPLEX_FLOAT,      8,      CT_ARRAY, CTF_COMPLEX|CTALIGN(2)|CTID_FLOAT) \
 271   _(COMPLEX_DOUBLE,     16,     CT_ARRAY, CTF_COMPLEX|CTALIGN(3)|CTID_DOUBLE) \
 272   _(P_VOID,     CTSIZE_PTR,     CT_PTR, CTALIGN_PTR|CTID_VOID) \
 273   _(P_CVOID,    CTSIZE_PTR,     CT_PTR, CTALIGN_PTR|CTID_CVOID) \
 274   _(P_CCHAR,    CTSIZE_PTR,     CT_PTR, CTALIGN_PTR|CTID_CCHAR) \
 275   _(A_CCHAR,            -1,     CT_ARRAY, CTF_CONST|CTALIGN(0)|CTID_CCHAR) \
 276   _(CTYPEID,            4,      CT_ENUM, CTALIGN(2)|CTID_INT32) \
 277   CTTYDEFP(_) \
 278   /* End of type list. */
 279
 280 /* Public predefined type IDs. */
 281 enum {
 282 #define CTTYIDDEF(id, sz, ct, info)     CTID_##id,
 283 CTTYDEF(CTTYIDDEF)
 284 #undef CTTYIDDEF
 285   /* Predefined typedefs and keywords follow. */
 286   CTID_MAX = 65536
 287 };
 288
 289 /* Target-dependent type IDs. */
 290 #if LJ_64
 291 #define CTID_INT_PSZ    CTID_INT64
 292 #define CTID_UINT_PSZ   CTID_UINT64
 293 #else
 294 #define CTID_INT_PSZ    CTID_INT32
 295 #define CTID_UINT_PSZ   CTID_UINT32
 296 #endif
 297
 298 #if LJ_ABI_WIN
 299 #define CTID_WCHAR      CTID_UINT16
 300 #elif LJ_TARGET_PPC
 301 #define CTID_WCHAR      CTID_LINT32
 302 #else
 303 #define CTID_WCHAR      CTID_INT32
 304 #endif
 305
 306 /* -- C tokens and keywords ----------------------------------------------- */
 307
 308 /* C lexer keywords. */
 309 #define CTOKDEF(_) \
 310   _(IDENT, "<identifier>") _(STRING, "<string>") \
 311   _(INTEGER, "<integer>") _(EOF, "<eof>") \
 312   _(OROR, "||") _(ANDAND, "&&") _(EQ, "==") _(NE, "!=") \
 313   _(LE, "<=") _(GE, ">=") _(SHL, "<<") _(SHR, ">>") _(DEREF, "->")
 314
 315 /* Simple declaration specifiers. */
 316 #define CDSDEF(_) \
 317   _(VOID) _(BOOL) _(CHAR) _(INT) _(FP) \
 318   _(LONG) _(LONGLONG) _(SHORT) _(COMPLEX) _(SIGNED) _(UNSIGNED) \
 319   _(CONST) _(VOLATILE) _(RESTRICT) _(INLINE) \
 320   _(TYPEDEF) _(EXTERN) _(STATIC) _(AUTO) _(REGISTER)
 321
 322 /* C keywords. */
 323 #define CKWDEF(_) \
 324   CDSDEF(_) _(EXTENSION) _(ASM) _(ATTRIBUTE) \
 325   _(DECLSPEC) _(CCDECL) _(PTRSZ) \
 326   _(STRUCT) _(UNION) _(ENUM) \
 327   _(SIZEOF) _(ALIGNOF)
 328
 329 /* C token numbers. */
 330 enum {
 331   CTOK_OFS = 255,
 332 #define CTOKNUM(name, sym)      CTOK_##name,
 333 #define CKWNUM(name)            CTOK_##name,
 334 CTOKDEF(CTOKNUM)
 335 CKWDEF(CKWNUM)
 336 #undef CTOKNUM
 337 #undef CKWNUM
 338   CTOK_FIRSTDECL = CTOK_VOID,
 339   CTOK_FIRSTSCL = CTOK_TYPEDEF,
 340   CTOK_LASTDECLFLAG = CTOK_REGISTER,
 341   CTOK_LASTDECL = CTOK_ENUM
 342 };
 343
 344 /* Declaration specifier flags. */
 345 enum {
 346 #define CDSFLAG(name)   CDF_##name = (1u << (CTOK_##name - CTOK_FIRSTDECL)),
 347 CDSDEF(CDSFLAG)
 348 #undef CDSFLAG
 349   CDF__END
 350 };
 351
 352 #define CDF_SCL  (CDF_TYPEDEF|CDF_EXTERN|CDF_STATIC|CDF_AUTO|CDF_REGISTER)
 353
 354 /* -- C type management --------------------------------------------------- */
 355
 356 #define ctype_ctsG(g)           (mref((g)->ctype_state, CTState))
 357
 358 /* Get C type state. */
 359 static LJ_AINLINE CTState *ctype_cts(lua_State *L)
 360 {
 361   CTState *cts = ctype_ctsG(G(L));
 362   cts->L = L;  /* Save L for errors and allocations. */
 363   return cts;
 364 }
 365
 366 /* Save and restore state of C type table. */
 367 #define LJ_CTYPE_SAVE(cts)      CTState savects_ = *(cts)
 368 #define LJ_CTYPE_RESTORE(cts) \
 369   ((cts)->top = savects_.top, \
 370    memcpy((cts)->hash, savects_.hash, sizeof(savects_.hash)))
 371
 372 /* Check C type ID for validity when assertions are enabled. */
 373 static LJ_AINLINE CTypeID ctype_check(CTState *cts, CTypeID id)
 374 {
 375   lua_assert(id > 0 && id < cts->top); UNUSED(cts);
 376   return id;
 377 }
 378
 379 /* Get C type for C type ID. */
 380 static LJ_AINLINE CType *ctype_get(CTState *cts, CTypeID id)
 381 {
 382   return &cts->tab[ctype_check(cts, id)];
 383 }
 384
 385 /* Get C type ID for a C type. */
 386 #define ctype_typeid(cts, ct)   ((CTypeID)((ct) - (cts)->tab))
 387
 388 /* Get child C type. */
 389 static LJ_AINLINE CType *ctype_child(CTState *cts, CType *ct)
 390 {
 391   lua_assert(!(ctype_isvoid(ct->info) || ctype_isstruct(ct->info) ||
 392              ctype_isbitfield(ct->info)));  /* These don't have children. */
 393   return ctype_get(cts, ctype_cid(ct->info));
 394 }
 395
 396 /* Get raw type for a C type ID. */
 397 static LJ_AINLINE CType *ctype_raw(CTState *cts, CTypeID id)
 398 {
 399   CType *ct = ctype_get(cts, id);
 400   while (ctype_isattrib(ct->info)) ct = ctype_child(cts, ct);
 401   return ct;
 402 }
 403
 404 /* Get raw type of the child of a C type. */
 405 static LJ_AINLINE CType *ctype_rawchild(CTState *cts, CType *ct)
 406 {
 407   do { ct = ctype_child(cts, ct); } while (ctype_isattrib(ct->info));
 408   return ct;
 409 }
 410
 411 /* Set the name of a C type table element. */
 412 static LJ_AINLINE void ctype_setname(CType *ct, GCstr *s)
 413 {
 414   /* NOBARRIER: mark string as fixed -- the C type table is never collected. */
 415   fixstring(s);
 416   setgcref(ct->name, obj2gco(s));
 417 }
 418
 419 LJ_FUNC CTypeID lj_ctype_new(CTState *cts, CType **ctp);
 420 LJ_FUNC CTypeID lj_ctype_intern(CTState *cts, CTInfo info, CTSize size);
 421 LJ_FUNC void lj_ctype_addname(CTState *cts, CType *ct, CTypeID id);
 422 LJ_FUNC CTypeID lj_ctype_getname(CTState *cts, CType **ctp, GCstr *name,
 423                                  uint32_t tmask);
 424 LJ_FUNC CType *lj_ctype_getfield(CTState *cts, CType *ct, GCstr *name,
 425                                  CTSize *ofs);
 426 LJ_FUNC CType *lj_ctype_rawref(CTState *cts, CTypeID id);
 427 LJ_FUNC CTSize lj_ctype_size(CTState *cts, CTypeID id);
 428 LJ_FUNC CTSize lj_ctype_vlsize(CTState *cts, CType *ct, CTSize nelem);
 429 LJ_FUNC CTInfo lj_ctype_info(CTState *cts, CTypeID id, CTSize *szp);
 430 LJ_FUNC cTValue *lj_ctype_meta(CTState *cts, CTypeID id, MMS mm);
 431 LJ_FUNC GCstr *lj_ctype_repr(lua_State *L, CTypeID id, GCstr *name);
 432 LJ_FUNC GCstr *lj_ctype_repr_int64(lua_State *L, uint64_t n, int isunsigned);
 433 LJ_FUNC GCstr *lj_ctype_repr_complex(lua_State *L, void *sp, CTSize size);
 434 LJ_FUNC CTState *lj_ctype_init(lua_State *L);
 435 LJ_FUNC void lj_ctype_freestate(global_State *g);
 436
 437 #endif
 438
 439 #endif