3
** Copyright (C) 2005-2013 Mike Pall. See Copyright Notice in luajit.h
14
/* -- C type definitions -------------------------------------------------- */
16
/* C type numbers. Highest 4 bits of C type info. ORDER CT. */
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. */
38
LJ_STATIC_ASSERT(((int)CT_PTR & (int)CT_ARRAY) == CT_PTR);
39
LJ_STATIC_ASSERT(((int)CT_STRUCT & (int)CT_ARRAY) == CT_STRUCT);
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
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. */
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)
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 */
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
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
116
#define CTF_INSERT(info, field, val) \
117
info = (info & ~(CTMASK_##field<<CTSHIFT_##field)) | \
118
(((CTSize)(val) & CTMASK_##field) << CTSHIFT_##field)
120
/* Calling conventions. ORDER CC */
121
enum { CTCC_CDECL, CTCC_THISCALL, CTCC_FASTCALL, CTCC_STDCALL };
123
/* Attribute numbers. */
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. */
135
#define CTSIZE_INVALID 0xffffffffu
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. */
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). */
151
#define CTHASH_SIZE 128 /* Number of hash anchors. */
152
#define CTHASH_MASK (CTHASH_SIZE-1)
154
/* Simplify target-specific configuration. Checked in lj_ccall.h. */
155
#define CCALL_MAX_GPR 8
156
#define CCALL_MAX_FPR 8
158
typedef LJ_ALIGN(8) union FPRCBArg { double d; float f[2]; } FPRCBArg;
160
/* C callback state. Defined here, to avoid dragging in lj_ccall.h. */
162
typedef LJ_ALIGN(8) struct CCallback {
163
FPRCBArg fpr[CCALL_MAX_FPR]; /* Arguments/results in FPRs. */
164
intptr_t gpr[CCALL_MAX_GPR]; /* Arguments/results in GPRs. */
165
intptr_t *stack; /* Pointer to arguments on stack. */
166
void *mcode; /* Machine code for callback func. pointers. */
167
CTypeID1 *cbid; /* Callback type table. */
168
MSize sizeid; /* Size of callback type table. */
169
MSize topid; /* Highest unused callback type table slot. */
170
MSize slot; /* Current callback slot. */
174
typedef struct CTState {
175
CType *tab; /* C type table. */
176
CTypeID top; /* Current top of C type table. */
177
MSize sizetab; /* Size of C type table. */
178
lua_State *L; /* Lua state (needed for errors and allocations). */
179
global_State *g; /* Global state. */
180
GCtab *finalizer; /* Map of cdata to finalizer. */
181
GCtab *miscmap; /* Map of -CTypeID to metatable and cb slot to func. */
182
CCallback cb; /* Temporary callback state. */
183
CTypeID1 hash[CTHASH_SIZE]; /* Hash anchors for C type table. */
186
#define CTINFO(ct, flags) (((CTInfo)(ct) << CTSHIFT_NUM) + (flags))
187
#define CTALIGN(al) ((CTSize)(al) << CTSHIFT_ALIGN)
188
#define CTATTRIB(at) ((CTInfo)(at) << CTSHIFT_ATTRIB)
190
#define ctype_type(info) ((info) >> CTSHIFT_NUM)
191
#define ctype_cid(info) ((CTypeID)((info) & CTMASK_CID))
192
#define ctype_align(info) (((info) >> CTSHIFT_ALIGN) & CTMASK_ALIGN)
193
#define ctype_attrib(info) (((info) >> CTSHIFT_ATTRIB) & CTMASK_ATTRIB)
194
#define ctype_bitpos(info) (((info) >> CTSHIFT_BITPOS) & CTMASK_BITPOS)
195
#define ctype_bitbsz(info) (((info) >> CTSHIFT_BITBSZ) & CTMASK_BITBSZ)
196
#define ctype_bitcsz(info) (((info) >> CTSHIFT_BITCSZ) & CTMASK_BITCSZ)
197
#define ctype_vsizeP(info) (((info) >> CTSHIFT_VSIZEP) & CTMASK_VSIZEP)
198
#define ctype_msizeP(info) (((info) >> CTSHIFT_MSIZEP) & CTMASK_MSIZEP)
199
#define ctype_cconv(info) (((info) >> CTSHIFT_CCONV) & CTMASK_CCONV)
201
/* Simple type checks. */
202
#define ctype_isnum(info) (ctype_type((info)) == CT_NUM)
203
#define ctype_isvoid(info) (ctype_type((info)) == CT_VOID)
204
#define ctype_isptr(info) (ctype_type((info)) == CT_PTR)
205
#define ctype_isarray(info) (ctype_type((info)) == CT_ARRAY)
206
#define ctype_isstruct(info) (ctype_type((info)) == CT_STRUCT)
207
#define ctype_isfunc(info) (ctype_type((info)) == CT_FUNC)
208
#define ctype_isenum(info) (ctype_type((info)) == CT_ENUM)
209
#define ctype_istypedef(info) (ctype_type((info)) == CT_TYPEDEF)
210
#define ctype_isattrib(info) (ctype_type((info)) == CT_ATTRIB)
211
#define ctype_isfield(info) (ctype_type((info)) == CT_FIELD)
212
#define ctype_isbitfield(info) (ctype_type((info)) == CT_BITFIELD)
213
#define ctype_isconstval(info) (ctype_type((info)) == CT_CONSTVAL)
214
#define ctype_isextern(info) (ctype_type((info)) == CT_EXTERN)
215
#define ctype_hassize(info) (ctype_type((info)) <= CT_HASSIZE)
217
/* Combined type and flag checks. */
218
#define ctype_isinteger(info) \
219
(((info) & (CTMASK_NUM|CTF_BOOL|CTF_FP)) == CTINFO(CT_NUM, 0))
220
#define ctype_isinteger_or_bool(info) \
221
(((info) & (CTMASK_NUM|CTF_FP)) == CTINFO(CT_NUM, 0))
222
#define ctype_isbool(info) \
223
(((info) & (CTMASK_NUM|CTF_BOOL)) == CTINFO(CT_NUM, CTF_BOOL))
224
#define ctype_isfp(info) \
225
(((info) & (CTMASK_NUM|CTF_FP)) == CTINFO(CT_NUM, CTF_FP))
227
#define ctype_ispointer(info) \
228
((ctype_type(info) >> 1) == (CT_PTR >> 1)) /* Pointer or array. */
229
#define ctype_isref(info) \
230
(((info) & (CTMASK_NUM|CTF_REF)) == CTINFO(CT_PTR, CTF_REF))
232
#define ctype_isrefarray(info) \
233
(((info) & (CTMASK_NUM|CTF_VECTOR|CTF_COMPLEX)) == CTINFO(CT_ARRAY, 0))
234
#define ctype_isvector(info) \
235
(((info) & (CTMASK_NUM|CTF_VECTOR)) == CTINFO(CT_ARRAY, CTF_VECTOR))
236
#define ctype_iscomplex(info) \
237
(((info) & (CTMASK_NUM|CTF_COMPLEX)) == CTINFO(CT_ARRAY, CTF_COMPLEX))
239
#define ctype_isvltype(info) \
240
(((info) & ((CTMASK_NUM|CTF_VLA) - (2u<<CTSHIFT_NUM))) == \
241
CTINFO(CT_STRUCT, CTF_VLA)) /* VL array or VL struct. */
242
#define ctype_isvlarray(info) \
243
(((info) & (CTMASK_NUM|CTF_VLA)) == CTINFO(CT_ARRAY, CTF_VLA))
245
#define ctype_isxattrib(info, at) \
246
(((info) & (CTMASK_NUM|CTATTRIB(CTMASK_ATTRIB))) == \
247
CTINFO(CT_ATTRIB, CTATTRIB(at)))
249
/* Target-dependent sizes and alignments. */
252
#define CTALIGN_PTR CTALIGN(3)
255
#define CTALIGN_PTR CTALIGN(2)
258
#define CTINFO_REF(ref) \
259
CTINFO(CT_PTR, (CTF_CONST|CTF_REF|CTALIGN_PTR) + (ref))
261
#define CT_MEMALIGN 3 /* Alignment guaranteed by memory allocator. */
263
/* -- Predefined types ---------------------------------------------------- */
265
/* Target-dependent types. */
266
#if LJ_TARGET_PPC || LJ_TARGET_PPCSPE
267
#define CTTYDEFP(_) \
268
_(LINT32, 4, CT_NUM, CTF_LONG|CTALIGN(2))
275
_(NONE, 0, CT_ATTRIB, CTATTRIB(CTA_BAD)) \
276
_(VOID, -1, CT_VOID, CTALIGN(0)) \
277
_(CVOID, -1, CT_VOID, CTF_CONST|CTALIGN(0)) \
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_(BOOL, 1, CT_NUM, CTF_BOOL|CTF_UNSIGNED|CTALIGN(0)) \
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_(CCHAR, 1, CT_NUM, CTF_CONST|CTF_UCHAR|CTALIGN(0)) \
280
_(INT8, 1, CT_NUM, CTALIGN(0)) \
281
_(UINT8, 1, CT_NUM, CTF_UNSIGNED|CTALIGN(0)) \
282
_(INT16, 2, CT_NUM, CTALIGN(1)) \
283
_(UINT16, 2, CT_NUM, CTF_UNSIGNED|CTALIGN(1)) \
284
_(INT32, 4, CT_NUM, CTALIGN(2)) \
285
_(UINT32, 4, CT_NUM, CTF_UNSIGNED|CTALIGN(2)) \
286
_(INT64, 8, CT_NUM, CTF_LONG|CTALIGN(3)) \
287
_(UINT64, 8, CT_NUM, CTF_UNSIGNED|CTF_LONG|CTALIGN(3)) \
288
_(FLOAT, 4, CT_NUM, CTF_FP|CTALIGN(2)) \
289
_(DOUBLE, 8, CT_NUM, CTF_FP|CTALIGN(3)) \
290
_(COMPLEX_FLOAT, 8, CT_ARRAY, CTF_COMPLEX|CTALIGN(2)|CTID_FLOAT) \
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_(COMPLEX_DOUBLE, 16, CT_ARRAY, CTF_COMPLEX|CTALIGN(3)|CTID_DOUBLE) \
292
_(P_VOID, CTSIZE_PTR, CT_PTR, CTALIGN_PTR|CTID_VOID) \
293
_(P_CVOID, CTSIZE_PTR, CT_PTR, CTALIGN_PTR|CTID_CVOID) \
294
_(P_CCHAR, CTSIZE_PTR, CT_PTR, CTALIGN_PTR|CTID_CCHAR) \
295
_(A_CCHAR, -1, CT_ARRAY, CTF_CONST|CTALIGN(0)|CTID_CCHAR) \
296
_(CTYPEID, 4, CT_ENUM, CTALIGN(2)|CTID_INT32) \
298
/* End of type list. */
300
/* Public predefined type IDs. */
302
#define CTTYIDDEF(id, sz, ct, info) CTID_##id,
305
/* Predefined typedefs and keywords follow. */
309
/* Target-dependent type IDs. */
311
#define CTID_INT_PSZ CTID_INT64
312
#define CTID_UINT_PSZ CTID_UINT64
314
#define CTID_INT_PSZ CTID_INT32
315
#define CTID_UINT_PSZ CTID_UINT32
319
#define CTID_WCHAR CTID_UINT16
321
#define CTID_WCHAR CTID_LINT32
323
#define CTID_WCHAR CTID_INT32
326
/* -- C tokens and keywords ----------------------------------------------- */
328
/* C lexer keywords. */
330
_(IDENT, "<identifier>") _(STRING, "<string>") \
331
_(INTEGER, "<integer>") _(EOF, "<eof>") \
332
_(OROR, "||") _(ANDAND, "&&") _(EQ, "==") _(NE, "!=") \
333
_(LE, "<=") _(GE, ">=") _(SHL, "<<") _(SHR, ">>") _(DEREF, "->")
335
/* Simple declaration specifiers. */
337
_(VOID) _(BOOL) _(CHAR) _(INT) _(FP) \
338
_(LONG) _(LONGLONG) _(SHORT) _(COMPLEX) _(SIGNED) _(UNSIGNED) \
339
_(CONST) _(VOLATILE) _(RESTRICT) _(INLINE) \
340
_(TYPEDEF) _(EXTERN) _(STATIC) _(AUTO) _(REGISTER)
344
CDSDEF(_) _(EXTENSION) _(ASM) _(ATTRIBUTE) \
345
_(DECLSPEC) _(CCDECL) _(PTRSZ) \
346
_(STRUCT) _(UNION) _(ENUM) \
349
/* C token numbers. */
352
#define CTOKNUM(name, sym) CTOK_##name,
353
#define CKWNUM(name) CTOK_##name,
358
CTOK_FIRSTDECL = CTOK_VOID,
359
CTOK_FIRSTSCL = CTOK_TYPEDEF,
360
CTOK_LASTDECLFLAG = CTOK_REGISTER,
361
CTOK_LASTDECL = CTOK_ENUM
364
/* Declaration specifier flags. */
366
#define CDSFLAG(name) CDF_##name = (1u << (CTOK_##name - CTOK_FIRSTDECL)),
372
#define CDF_SCL (CDF_TYPEDEF|CDF_EXTERN|CDF_STATIC|CDF_AUTO|CDF_REGISTER)
374
/* -- C type management --------------------------------------------------- */
376
#define ctype_ctsG(g) (mref((g)->ctype_state, CTState))
378
/* Get C type state. */
379
static LJ_AINLINE CTState *ctype_cts(lua_State *L)
381
CTState *cts = ctype_ctsG(G(L));
382
cts->L = L; /* Save L for errors and allocations. */
386
/* Save and restore state of C type table. */
387
#define LJ_CTYPE_SAVE(cts) CTState savects_ = *(cts)
388
#define LJ_CTYPE_RESTORE(cts) \
389
((cts)->top = savects_.top, \
390
memcpy((cts)->hash, savects_.hash, sizeof(savects_.hash)))
392
/* Check C type ID for validity when assertions are enabled. */
393
static LJ_AINLINE CTypeID ctype_check(CTState *cts, CTypeID id)
395
lua_assert(id > 0 && id < cts->top); UNUSED(cts);
399
/* Get C type for C type ID. */
400
static LJ_AINLINE CType *ctype_get(CTState *cts, CTypeID id)
402
return &cts->tab[ctype_check(cts, id)];
405
/* Get C type ID for a C type. */
406
#define ctype_typeid(cts, ct) ((CTypeID)((ct) - (cts)->tab))
408
/* Get child C type. */
409
static LJ_AINLINE CType *ctype_child(CTState *cts, CType *ct)
411
lua_assert(!(ctype_isvoid(ct->info) || ctype_isstruct(ct->info) ||
412
ctype_isbitfield(ct->info))); /* These don't have children. */
413
return ctype_get(cts, ctype_cid(ct->info));
416
/* Get raw type for a C type ID. */
417
static LJ_AINLINE CType *ctype_raw(CTState *cts, CTypeID id)
419
CType *ct = ctype_get(cts, id);
420
while (ctype_isattrib(ct->info)) ct = ctype_child(cts, ct);
424
/* Get raw type of the child of a C type. */
425
static LJ_AINLINE CType *ctype_rawchild(CTState *cts, CType *ct)
427
do { ct = ctype_child(cts, ct); } while (ctype_isattrib(ct->info));
431
/* Set the name of a C type table element. */
432
static LJ_AINLINE void ctype_setname(CType *ct, GCstr *s)
434
/* NOBARRIER: mark string as fixed -- the C type table is never collected. */
436
setgcref(ct->name, obj2gco(s));
439
LJ_FUNC CTypeID lj_ctype_new(CTState *cts, CType **ctp);
440
LJ_FUNC CTypeID lj_ctype_intern(CTState *cts, CTInfo info, CTSize size);
441
LJ_FUNC void lj_ctype_addname(CTState *cts, CType *ct, CTypeID id);
442
LJ_FUNC CTypeID lj_ctype_getname(CTState *cts, CType **ctp, GCstr *name,
444
LJ_FUNC CType *lj_ctype_getfieldq(CTState *cts, CType *ct, GCstr *name,
445
CTSize *ofs, CTInfo *qual);
446
#define lj_ctype_getfield(cts, ct, name, ofs) \
447
lj_ctype_getfieldq((cts), (ct), (name), (ofs), NULL)
448
LJ_FUNC CType *lj_ctype_rawref(CTState *cts, CTypeID id);
449
LJ_FUNC CTSize lj_ctype_size(CTState *cts, CTypeID id);
450
LJ_FUNC CTSize lj_ctype_vlsize(CTState *cts, CType *ct, CTSize nelem);
451
LJ_FUNC CTInfo lj_ctype_info(CTState *cts, CTypeID id, CTSize *szp);
452
LJ_FUNC cTValue *lj_ctype_meta(CTState *cts, CTypeID id, MMS mm);
453
LJ_FUNC GCstr *lj_ctype_repr(lua_State *L, CTypeID id, GCstr *name);
454
LJ_FUNC GCstr *lj_ctype_repr_int64(lua_State *L, uint64_t n, int isunsigned);
455
LJ_FUNC GCstr *lj_ctype_repr_complex(lua_State *L, void *sp, CTSize size);
456
LJ_FUNC CTState *lj_ctype_init(lua_State *L);
457
LJ_FUNC void lj_ctype_freestate(global_State *g);
added
removed
third-party/LuaJIT-2.0.2/src/lj_ctype.h
