--- /dev/null
+/*
+** C type management.
+** Copyright (C) 2005-2010 Mike Pall. See Copyright Notice in luajit.h
+*/
+
+#include "lj_obj.h"
+
+#if LJ_HASFFI
+
+#include "lj_gc.h"
+#include "lj_err.h"
+#include "lj_str.h"
+#include "lj_tab.h"
+#include "lj_ctype.h"
+
+/* -- C type definitions -------------------------------------------------- */
+
+/* Predefined typedefs. */
+#define CTTDDEF(_) \
+ /* Vararg handling. */ \
+ _("va_list", P_VOID) \
+ _("__builtin_va_list", P_VOID) \
+ _("__gnuc_va_list", P_VOID) \
+ /* From stddef.h. */ \
+ _("ptrdiff_t", INT_PSZ) \
+ _("size_t", UINT_PSZ) \
+ _("wchar_t", WCHAR) \
+ /* Subset of stdint.h. */ \
+ _("int8_t", INT8) \
+ _("int16_t", INT16) \
+ _("int32_t", INT32) \
+ _("int64_t", INT64) \
+ _("uint8_t", UINT8) \
+ _("uint16_t", UINT16) \
+ _("uint32_t", UINT32) \
+ _("uint64_t", UINT64) \
+ _("intptr_t", INT_PSZ) \
+ _("uintptr_t", UINT_PSZ) \
+ /* End of typedef list. */
+
+/* Keywords (only the ones we actually care for). */
+#define CTKWDEF(_) \
+ /* Type specifiers. */ \
+ _("void", -1, CTOK_VOID) \
+ _("_Bool", 1, CTOK_BOOL) \
+ _("bool", 1, CTOK_BOOL) \
+ _("char", 1, CTOK_CHAR) \
+ _("int", 4, CTOK_INT) \
+ _("__int8", 1, CTOK_INT) \
+ _("__int16", 2, CTOK_INT) \
+ _("__int32", 4, CTOK_INT) \
+ _("__int64", 8, CTOK_INT) \
+ _("float", 4, CTOK_FP) \
+ _("double", 8, CTOK_FP) \
+ _("long", 0, CTOK_LONG) \
+ _("short", 0, CTOK_SHORT) \
+ _("_Complex", 0, CTOK_COMPLEX) \
+ _("complex", 0, CTOK_COMPLEX) \
+ _("__complex", 0, CTOK_COMPLEX) \
+ _("__complex__", 0, CTOK_COMPLEX) \
+ _("signed", 0, CTOK_SIGNED) \
+ _("__signed", 0, CTOK_SIGNED) \
+ _("__signed__", 0, CTOK_SIGNED) \
+ _("unsigned", 0, CTOK_UNSIGNED) \
+ /* Type qualifiers. */ \
+ _("const", 0, CTOK_CONST) \
+ _("__const", 0, CTOK_CONST) \
+ _("__const__", 0, CTOK_CONST) \
+ _("volatile", 0, CTOK_VOLATILE) \
+ _("__volatile", 0, CTOK_VOLATILE) \
+ _("__volatile__", 0, CTOK_VOLATILE) \
+ _("restrict", 0, CTOK_RESTRICT) \
+ _("__restrict", 0, CTOK_RESTRICT) \
+ _("__restrict__", 0, CTOK_RESTRICT) \
+ _("inline", 0, CTOK_INLINE) \
+ _("__inline", 0, CTOK_INLINE) \
+ _("__inline__", 0, CTOK_INLINE) \
+ /* Storage class specifiers. */ \
+ _("typedef", 0, CTOK_TYPEDEF) \
+ _("extern", 0, CTOK_EXTERN) \
+ _("static", 0, CTOK_STATIC) \
+ _("auto", 0, CTOK_AUTO) \
+ _("register", 0, CTOK_REGISTER) \
+ /* GCC Attributes. */ \
+ _("__extension__", 0, CTOK_EXTENSION) \
+ _("__attribute", 0, CTOK_ATTRIBUTE) \
+ _("__attribute__", 0, CTOK_ATTRIBUTE) \
+ _("asm", 0, CTOK_ASM) \
+ _("__asm", 0, CTOK_ASM) \
+ _("__asm__", 0, CTOK_ASM) \
+ /* MSVC Attributes. */ \
+ _("__declspec", 0, CTOK_DECLSPEC) \
+ _("__cdecl", CTCC_CDECL, CTOK_CCDECL) \
+ _("__thiscall", CTCC_THISCALL, CTOK_CCDECL) \
+ _("__fastcall", CTCC_FASTCALL, CTOK_CCDECL) \
+ _("__stdcall", CTCC_STDCALL, CTOK_CCDECL) \
+ _("__ptr32", 4, CTOK_PTRSZ) \
+ _("__ptr64", 8, CTOK_PTRSZ) \
+ /* Other type specifiers. */ \
+ _("struct", 0, CTOK_STRUCT) \
+ _("union", 0, CTOK_UNION) \
+ _("enum", 0, CTOK_ENUM) \
+ /* Operators. */ \
+ _("sizeof", 0, CTOK_SIZEOF) \
+ _("__alignof", 0, CTOK_ALIGNOF) \
+ _("__alignof__", 0, CTOK_ALIGNOF) \
+ /* End of keyword list. */
+
+/* Type info for predefined types. Size merged in. */
+static CTInfo lj_ctype_typeinfo[] = {
+#define CTTYINFODEF(id, sz, ct, info) CTINFO((ct),(((sz)&0x3fu)<<10)+(info)),
+#define CTTDINFODEF(name, id) CTINFO(CT_TYPEDEF, CTID_##id),
+#define CTKWINFODEF(name, sz, kw) CTINFO(CT_KW,(((sz)&0x3fu)<<10)+(kw)),
+CTTYDEF(CTTYINFODEF)
+CTTDDEF(CTTDINFODEF)
+CTKWDEF(CTKWINFODEF)
+#undef CTTYINFODEF
+#undef CTTDINFODEF
+#undef CTKWINFODEF
+ 0
+};
+
+/* Predefined type names collected in a single string. */
+static const char * const lj_ctype_typenames =
+#define CTTDNAMEDEF(name, id) name "\0"
+#define CTKWNAMEDEF(name, sz, cds) name "\0"
+CTTDDEF(CTTDNAMEDEF)
+CTKWDEF(CTKWNAMEDEF)
+#undef CTTDNAMEDEF
+#undef CTKWNAMEDEF
+;
+
+#define CTTYPEINFO_NUM (sizeof(lj_ctype_typeinfo)/sizeof(CTInfo)-1)
+#define CTTYPETAB_MIN 128
+
+/* -- C type interning ---------------------------------------------------- */
+
+#define ct_hashtype(info, size) (hashrot(info, size) & CTHASH_MASK)
+#define ct_hashname(name) \
+ (hashrot(u32ptr(name), u32ptr(name) + HASH_BIAS) & CTHASH_MASK)
+
+/* Create new type element. */
+CTypeID lj_ctype_new(CTState *cts, CType **ctp)
+{
+ CTypeID id = cts->top;
+ CType *ct;
+ lua_assert(cts->L);
+ if (LJ_UNLIKELY(id >= cts->sizetab)) {
+ if (id >= CTID_MAX) lj_err_msg(cts->L, LJ_ERR_TABOV);
+ lj_mem_growvec(cts->L, cts->tab, cts->sizetab, CTID_MAX, CType);
+ }
+ cts->top = id+1;
+ *ctp = ct = &cts->tab[id];
+ ct->info = 0;
+ ct->size = 0;
+ ct->sib = 0;
+ ct->next = 0;
+ setgcrefnull(ct->name);
+ return id;
+}
+
+/* Intern a type element. */
+CTypeID lj_ctype_intern(CTState *cts, CTInfo info, CTSize size)
+{
+ uint32_t h = ct_hashtype(info, size);
+ CTypeID id = cts->hash[h];
+ lua_assert(cts->L);
+ while (id) {
+ CType *ct = ctype_get(cts, id);
+ if (ct->info == info && ct->size == size)
+ return id;
+ id = ct->next;
+ }
+ id = cts->top;
+ if (LJ_UNLIKELY(id >= cts->sizetab)) {
+ if (id >= CTID_MAX) lj_err_msg(cts->L, LJ_ERR_TABOV);
+ lj_mem_growvec(cts->L, cts->tab, cts->sizetab, CTID_MAX, CType);
+ }
+ cts->top = id+1;
+ cts->tab[id].info = info;
+ cts->tab[id].size = size;
+ cts->tab[id].sib = 0;
+ cts->tab[id].next = cts->hash[h];
+ setgcrefnull(cts->tab[id].name);
+ cts->hash[h] = (CTypeID1)id;
+ return id;
+}
+
+/* Add type element to hash table. */
+static void ctype_addtype(CTState *cts, CType *ct, CTypeID id)
+{
+ uint32_t h = ct_hashtype(ct->info, ct->size);
+ ct->next = cts->hash[h];
+ cts->hash[h] = (CTypeID1)id;
+}
+
+/* Add named element to hash table. */
+void lj_ctype_addname(CTState *cts, CType *ct, CTypeID id)
+{
+ uint32_t h = ct_hashname(gcref(ct->name));
+ ct->next = cts->hash[h];
+ cts->hash[h] = (CTypeID1)id;
+}
+
+/* Get a C type by name, matching the type mask. */
+CTypeID lj_ctype_getname(CTState *cts, CType **ctp, GCstr *name, uint32_t tmask)
+{
+ CTypeID id = cts->hash[ct_hashname(name)];
+ while (id) {
+ CType *ct = ctype_get(cts, id);
+ if (gcref(ct->name) == obj2gco(name) &&
+ ((tmask >> ctype_type(ct->info)) & 1)) {
+ *ctp = ct;
+ return id;
+ }
+ id = ct->next;
+ }
+ *ctp = &cts->tab[0]; /* Simplify caller logic. ctype_get() would assert. */
+ return 0;
+}
+
+/* Get a struct/union/enum/function field by name. */
+CType *lj_ctype_getfield(CTState *cts, CType *ct, GCstr *name, CTSize *ofs)
+{
+ while (ct->sib) {
+ ct = ctype_get(cts, ct->sib);
+ if (gcref(ct->name) == obj2gco(name)) {
+ *ofs = ct->size;
+ return ct;
+ }
+ if (ctype_isxattrib(ct->info, CTA_SUBTYPE)) {
+ CType *fct = lj_ctype_getfield(cts, ctype_child(cts, ct), name, ofs);
+ if (fct) {
+ *ofs += ct->size;
+ return fct;
+ }
+ }
+ }
+ return NULL; /* Not found. */
+}
+
+/* -- C type information -------------------------------------------------- */
+
+/* Follow references and get raw type for a C type ID. */
+CType *lj_ctype_rawref(CTState *cts, CTypeID id)
+{
+ CType *ct = ctype_get(cts, id);
+ while (ctype_isattrib(ct->info) || ctype_isref(ct->info))
+ ct = ctype_child(cts, ct);
+ return ct;
+}
+
+/* Get size for a C type ID. Does NOT support VLA/VLS. */
+CTSize lj_ctype_size(CTState *cts, CTypeID id)
+{
+ CType *ct = ctype_raw(cts, id);
+ return ctype_hassize(ct->info) ? ct->size : CTSIZE_INVALID;
+}
+
+/* Get size for a variable-length C type. Does NOT support other C types. */
+CTSize lj_ctype_vlsize(CTState *cts, CType *ct, CTSize nelem)
+{
+ uint64_t xsz = 0;
+ if (ctype_isstruct(ct->info)) {
+ CTypeID arrid = 0, fid = ct->sib;
+ xsz = ct->size; /* Add the struct size. */
+ while (fid) {
+ CType *ctf = ctype_get(cts, fid);
+ if (ctype_type(ctf->info) == CT_FIELD)
+ arrid = ctype_cid(ctf->info); /* Remember last field of VLS. */
+ fid = ctf->sib;
+ }
+ ct = ctype_raw(cts, arrid);
+ }
+ lua_assert(ctype_isvlarray(ct->info)); /* Must be a VLA. */
+ ct = ctype_rawchild(cts, ct); /* Get array element. */
+ lua_assert(ctype_hassize(ct->info));
+ /* Calculate actual size of VLA and check for overflow. */
+ xsz += (uint64_t)ct->size * nelem;
+ return xsz < 0x80000000u ? (CTSize)xsz : CTSIZE_INVALID;
+}
+
+/* Get type, qualifiers, size and alignment for a C type ID. */
+CTInfo lj_ctype_info(CTState *cts, CTypeID id, CTSize *szp)
+{
+ CTInfo qual = 0;
+ CType *ct = ctype_get(cts, id);
+ for (;;) {
+ CTInfo info = ct->info;
+ if (ctype_isenum(info)) {
+ /* Follow child. Need to look at its attributes, too. */
+ } else if (ctype_isattrib(info)) {
+ if (ctype_isxattrib(info, CTA_QUAL))
+ qual |= ct->size;
+ else if (ctype_isxattrib(info, CTA_ALIGN) && !(qual & CTFP_ALIGNED))
+ qual |= CTFP_ALIGNED + CTALIGN(ct->size);
+ } else {
+ if (!(qual & CTFP_ALIGNED)) qual |= (info & CTF_ALIGN);
+ qual |= (info & ~(CTF_ALIGN|CTMASK_CID));
+ lua_assert(ctype_hassize(info) || ctype_isfunc(info));
+ *szp = ctype_isfunc(info) ? CTSIZE_INVALID : ct->size;
+ break;
+ }
+ ct = ctype_get(cts, ctype_cid(info));
+ }
+ return qual;
+}
+
+/* -- C type representation ----------------------------------------------- */
+
+/* Fixed max. length of a C type representation. */
+#define CTREPR_MAX 512
+
+typedef struct CTRepr {
+ char *pb, *pe;
+ CTState *cts;
+ lua_State *L;
+ int needsp;
+ int ok;
+ char buf[CTREPR_MAX];
+} CTRepr;
+
+/* Prepend string. */
+static void ctype_prepstr(CTRepr *ctr, const char *str, MSize len)
+{
+ char *p = ctr->pb;
+ if (ctr->buf + len+1 > p) { ctr->ok = 0; return; }
+ if (ctr->needsp) *--p = ' ';
+ ctr->needsp = 1;
+ p -= len;
+ while (len-- > 0) p[len] = str[len];
+ ctr->pb = p;
+}
+
+#define ctype_preplit(ctr, str) ctype_prepstr((ctr), "" str, sizeof(str)-1)
+
+/* Prepend char. */
+static void ctype_prepc(CTRepr *ctr, int c)
+{
+ if (ctr->buf >= ctr->pb) { ctr->ok = 0; return; }
+ *--ctr->pb = c;
+}
+
+/* Prepend number. */
+static void ctype_prepnum(CTRepr *ctr, uint32_t n)
+{
+ char *p = ctr->pb;
+ if (ctr->buf + 10+1 > p) { ctr->ok = 0; return; }
+ do { *--p = (char)('0' + n % 10); } while (n /= 10);
+ ctr->pb = p;
+ ctr->needsp = 0;
+}
+
+/* Append char. */
+static void ctype_appc(CTRepr *ctr, int c)
+{
+ if (ctr->pe >= ctr->buf + CTREPR_MAX) { ctr->ok = 0; return; }
+ *ctr->pe++ = c;
+}
+
+/* Append number. */
+static void ctype_appnum(CTRepr *ctr, uint32_t n)
+{
+ char buf[10];
+ char *p = buf+sizeof(buf);
+ char *q = ctr->pe;
+ if (q > ctr->buf + CTREPR_MAX - 10) { ctr->ok = 0; return; }
+ do { *--p = (char)('0' + n % 10); } while (n /= 10);
+ do { *q++ = *p++; } while (p < buf+sizeof(buf));
+ ctr->pe = q;
+}
+
+/* Prepend qualifiers. */
+static void ctype_prepqual(CTRepr *ctr, CTInfo info)
+{
+ if ((info & CTF_VOLATILE)) ctype_preplit(ctr, "volatile");
+ if ((info & CTF_CONST)) ctype_preplit(ctr, "const");
+}
+
+/* Prepend named type. */
+static void ctype_preptype(CTRepr *ctr, CType *ct, CTInfo qual, const char *t)
+{
+ if (gcref(ct->name)) {
+ GCstr *str = gco2str(gcref(ct->name));
+ ctype_prepstr(ctr, strdata(str), str->len);
+ } else {
+ if (ctr->needsp) ctype_prepc(ctr, ' ');
+ ctype_prepnum(ctr, ctype_typeid(ctr->cts, ct));
+ ctr->needsp = 1;
+ }
+ ctype_prepstr(ctr, t, (MSize)strlen(t));
+ ctype_prepqual(ctr, qual);
+}
+
+void ctype_repr(CTRepr *ctr, CTypeID id)
+{
+ CType *ct = ctype_get(ctr->cts, id);
+ CTInfo qual = 0;
+ int ptrto = 0;
+ for (;;) {
+ CTInfo info = ct->info;
+ CTSize size = ct->size;
+ switch (ctype_type(info)) {
+ case CT_NUM:
+ if ((info & CTF_BOOL)) {
+ ctype_preplit(ctr, "bool");
+ } else if ((info & CTF_FP)) {
+ if (size == sizeof(double)) ctype_preplit(ctr, "double");
+ else if (size == sizeof(float)) ctype_preplit(ctr, "float");
+ else ctype_preplit(ctr, "long double");
+ } else if (size == 1) {
+ if (!((info ^ CTF_UCHAR) & CTF_UNSIGNED)) ctype_preplit(ctr, "char");
+ else if (CTF_UCHAR) ctype_preplit(ctr, "signed char");
+ else ctype_preplit(ctr, "unsigned char");
+ } else if (size < 8) {
+ if (size == 4) ctype_preplit(ctr, "int");
+ else ctype_preplit(ctr, "short");
+ if ((info & CTF_UNSIGNED)) ctype_preplit(ctr, "unsigned");
+ } else {
+ ctype_preplit(ctr, "_t");
+ ctype_prepnum(ctr, size*8);
+ ctype_preplit(ctr, "int");
+ if ((info & CTF_UNSIGNED)) ctype_prepc(ctr, 'u');
+ }
+ ctype_prepqual(ctr, (qual|info));
+ return;
+ case CT_VOID:
+ ctype_preplit(ctr, "void");
+ ctype_prepqual(ctr, (qual|info));
+ return;
+ case CT_STRUCT:
+ ctype_preptype(ctr, ct, qual, (info & CTF_UNION) ? "union" : "struct");
+ return;
+ case CT_ENUM:
+ ctype_preptype(ctr, ct, qual, "enum");
+ return;
+ case CT_ATTRIB:
+ if (ctype_attrib(info) == CTA_QUAL) qual |= size;
+ break;
+ case CT_PTR:
+ if ((info & CTF_REF)) {
+ ctype_prepc(ctr, '&');
+ } else {
+ ctype_prepqual(ctr, (qual|info));
+ if (LJ_64 && size == 4) ctype_preplit(ctr, "__ptr32");
+ ctype_prepc(ctr, '*');
+ }
+ qual = 0;
+ ptrto = 1;
+ ctr->needsp = 1;
+ break;
+ case CT_ARRAY:
+ ctr->needsp = 1;
+ if (ctype_isrefarray(info)) {
+ if (ptrto) { ptrto = 0; ctype_prepc(ctr, '('); ctype_appc(ctr, ')'); }
+ ctype_appc(ctr, '[');
+ if (size != CTSIZE_INVALID) {
+ CTSize csize = ctype_child(ctr->cts, ct)->size;
+ ctype_appnum(ctr, csize ? size/csize : 0);
+ } else if ((info & CTF_VLA)) {
+ ctype_appc(ctr, '?');
+ }
+ ctype_appc(ctr, ']');
+ } else if ((info & CTF_COMPLEX)) {
+ if (size == 2*sizeof(float)) ctype_preplit(ctr, "float");
+ ctype_preplit(ctr, "complex");
+ return;
+ } else {
+ ctype_preplit(ctr, ")))");
+ ctype_prepnum(ctr, size);
+ ctype_preplit(ctr, "__attribute__((vector_size(");
+ }
+ break;
+ case CT_FUNC:
+ ctr->needsp = 1;
+ if (ptrto) { ptrto = 0; ctype_prepc(ctr, '('); ctype_appc(ctr, ')'); }
+ ctype_appc(ctr, '(');
+ ctype_appc(ctr, ')');
+ break;
+ default:
+ lua_assert(0);
+ break;
+ }
+ ct = ctype_get(ctr->cts, ctype_cid(info));
+ }
+}
+
+/* Return a printable representation of a C type. */
+GCstr *lj_ctype_repr(lua_State *L, CTypeID id, GCstr *name)
+{
+ global_State *g = G(L);
+ CTRepr ctr;
+ ctr.pb = ctr.pe = &ctr.buf[CTREPR_MAX/2];
+ ctr.cts = ctype_ctsG(g);
+ ctr.L = L;
+ ctr.ok = 1;
+ ctr.needsp = 0;
+ if (name) ctype_prepstr(&ctr, strdata(name), name->len);
+ ctype_repr(&ctr, id);
+ if (LJ_UNLIKELY(!ctr.ok)) return lj_str_newlit(L, "?");
+ return lj_str_new(L, ctr.pb, ctr.pe - ctr.pb);
+}
+
+/* Convert int64_t/uint64_t to string with 'LL' or 'ULL' suffix. */
+GCstr *lj_ctype_repr_int64(lua_State *L, uint64_t n, int isunsigned)
+{
+ char buf[1+20+3];
+ char *p = buf+sizeof(buf);
+ int sign = 0;
+ *--p = 'L'; *--p = 'L';
+ if (isunsigned) {
+ *--p = 'U';
+ } else if ((int64_t)n < 0) {
+ n = (uint64_t)-(int64_t)n;
+ sign = 1;
+ }
+ do { *--p = (char)('0' + n % 10); } while (n /= 10);
+ if (sign) *--p = '-';
+ return lj_str_new(L, p, (size_t)(buf+sizeof(buf)-p));
+}
+
+/* Convert complex to string with 'i' or 'I' suffix. */
+GCstr *lj_ctype_repr_complex(lua_State *L, void *sp, CTSize size)
+{
+ char buf[2*LUAI_MAXNUMBER2STR+2+1];
+ TValue re, im;
+ size_t len;
+ if (size == 2*sizeof(double)) {
+ re.n = *(double *)sp; im.n = ((double *)sp)[1];
+ } else {
+ re.n = (double)*(float *)sp; im.n = (double)((float *)sp)[1];
+ }
+ len = lj_str_bufnum(buf, &re);
+ if (!(im.u32.hi & 0x80000000u) || im.n != im.n) buf[len++] = '+';
+ len += lj_str_bufnum(buf+len, &im);
+ buf[len] = buf[len-1] >= 'a' ? 'I' : 'i';
+ return lj_str_new(L, buf, len+1);
+}
+
+/* -- C type state -------------------------------------------------------- */
+
+/* Initialize C type table and state. */
+void lj_ctype_init(lua_State *L)
+{
+ CTState *cts = lj_mem_newt(L, sizeof(CTState), CTState);
+ CType *ct = lj_mem_newvec(L, CTTYPETAB_MIN, CType);
+ const char *name = lj_ctype_typenames;
+ CTypeID id;
+ memset(cts, 0, sizeof(CTState));
+ cts->tab = ct;
+ cts->sizetab = CTTYPETAB_MIN;
+ cts->top = CTTYPEINFO_NUM;
+ cts->L = NULL;
+ cts->g = G(L);
+ for (id = 0; id < CTTYPEINFO_NUM; id++, ct++) {
+ CTInfo info = lj_ctype_typeinfo[id];
+ ct->size = (CTSize)((int32_t)(info << 16) >> 26);
+ ct->info = info & 0xffff03ffu;
+ if (ctype_type(info) == CT_KW || ctype_istypedef(info)) {
+ size_t len = strlen(name);
+ GCstr *str = lj_str_new(L, name, len);
+ ctype_setname(ct, str);
+ name += len+1;
+ lj_ctype_addname(cts, ct, id);
+ } else {
+ setgcrefnull(ct->name);
+ if (!ctype_isenum(info)) ctype_addtype(cts, ct, id);
+ }
+ }
+ setmref(G(L)->ctype_state, cts);
+}
+
+/* Free C type table and state. */
+void lj_ctype_freestate(global_State *g)
+{
+ CTState *cts = ctype_ctsG(g);
+ if (cts) {
+ lj_mem_freevec(g, cts->tab, cts->sizetab, CType);
+ lj_mem_freet(g, cts);
+ }
+}
+
+#endif
--- /dev/null
+/*
+** C type management.
+** Copyright (C) 2005-2010 Mike Pall. See Copyright Notice in luajit.h
+*/
+
+#ifndef _LJ_CTYPE_H
+#define _LJ_CTYPE_H
+
+#include "lj_obj.h"
+#include "lj_gc.h"
+
+#if LJ_HASFFI
+
+/* -- C type definitions -------------------------------------------------- */
+
+/* C type numbers. Highest 4 bits of C type info. ORDER CT. */
+enum {
+ /* Externally visible types. */
+ CT_NUM, /* Integer or floating-point numbers. */
+ CT_STRUCT, /* Struct or union. */
+ CT_PTR, /* Pointer or reference. */
+ CT_ARRAY, /* Array or complex type. */
+ CT_MAYCONVERT = CT_ARRAY,
+ CT_VOID, /* Void type. */
+ CT_ENUM, /* Enumeration. */
+ CT_HASSIZE = CT_ENUM, /* Last type where ct->size holds the actual size. */
+ CT_FUNC, /* Function. */
+ CT_TYPEDEF, /* Typedef. */
+ CT_ATTRIB, /* Miscellaneous attributes. */
+ /* Internal element types. */
+ CT_FIELD, /* Struct/union field or function parameter. */
+ CT_BITFIELD, /* Struct/union bitfield. */
+ CT_CONSTVAL, /* Constant value. */
+ CT_EXTERN, /* External reference. */
+ CT_KW /* Keyword. */
+};
+
+/*
+** ---------- info ------------
+** |type flags... A cid | size | sib | next | name |
+** +----------------------------+--------+-------+-------+-------+--
+** |NUM BFvcUL.. A | size | | type | |
+** |STRUCT ..vcU..V A | size | field | name? | name? |
+** |PTR ..vcR... A cid | size | | type | |
+** |ARRAY VCvc...V A cid | size | | type | |
+** |VOID ..vc.... A | size | | type | |
+** |ENUM A cid | size | const | name? | name? |
+** |FUNC ....VS.. cc cid | nargs | field | name? | name? |
+** |TYPEDEF cid | | | name | name |
+** |ATTRIB attrnum cid | attr | sib? | type? | |
+** |FIELD cid | offset | field | | name? |
+** |BITFIELD B.vcU csz bsz pos | offset | field | | name? |
+** |CONSTVAL c cid | value | const | name | name |
+** |EXTERN cid | | | name | name |
+** |KW tok | size | | name | name |
+** +----------------------------+--------+-------+-------+-------+--
+** ^^ ^^--- bits used for C type conversion dispatch
+*/
+
+/* C type info flags. TFFArrrr */
+#define CTF_BOOL 0x08000000u /* Boolean: NUM, BITFIELD. */
+#define CTF_FP 0x04000000u /* Floating-point: NUM. */
+#define CTF_CONST 0x02000000u /* Const qualifier. */
+#define CTF_VOLATILE 0x01000000u /* Volatile qualifier. */
+#define CTF_UNSIGNED 0x00800000u /* Unsigned: NUM, BITFIELD. */
+#define CTF_LONG 0x00400000u /* Long: NUM. */
+#define CTF_VLA 0x00100000u /* Variable-length: ARRAY, STRUCT. */
+#define CTF_REF 0x00800000u /* Reference: PTR. */
+#define CTF_VECTOR 0x08000000u /* Vector: ARRAY. */
+#define CTF_COMPLEX 0x04000000u /* Complex: ARRAY. */
+#define CTF_UNION 0x00800000u /* Union: STRUCT. */
+#define CTF_VARARG 0x00800000u /* Vararg: FUNC. */
+#define CTF_SSEREGPARM 0x00400000u /* SSE register parameters: FUNC. */
+
+#define CTF_QUAL (CTF_CONST|CTF_VOLATILE)
+#define CTF_ALIGN (CTMASK_ALIGN<<CTSHIFT_ALIGN)
+#define CTF_UCHAR ((char)-1 > 0 ? CTF_UNSIGNED : 0)
+
+/* Flags used in parser. .F.Ammvf cp->attr */
+#define CTFP_ALIGNED 0x00000001u /* cp->attr + ALIGN */
+#define CTFP_PACKED 0x00000002u /* cp->attr */
+/* ...C...f cp->fattr */
+#define CTFP_CCONV 0x00000001u /* cp->fattr + CCONV/[SSE]REGPARM */
+
+/* C type info bitfields. */
+#define CTMASK_CID 0x0000ffffu /* Max. 65536 type IDs. */
+#define CTMASK_NUM 0xf0000000u /* Max. 16 type numbers. */
+#define CTSHIFT_NUM 28
+#define CTMASK_ALIGN 15 /* Max. alignment is 2^15. */
+#define CTSHIFT_ALIGN 16
+#define CTMASK_ATTRIB 255 /* Max. 256 attributes. */
+#define CTSHIFT_ATTRIB 16
+#define CTMASK_CCONV 3 /* Max. 4 calling conventions. */
+#define CTSHIFT_CCONV 16
+#define CTMASK_REGPARM 3 /* Max. 0-3 regparms. */
+#define CTSHIFT_REGPARM 18
+/* Bitfields only used in parser. */
+#define CTMASK_VSIZEP 15 /* Max. vector size is 2^15. */
+#define CTSHIFT_VSIZEP 4
+#define CTMASK_MSIZEP 255 /* Max. type size (via mode) is 128. */
+#define CTSHIFT_MSIZEP 8
+
+/* Info bits for BITFIELD. Max. size of bitfield is 64 bits. */
+#define CTBSZ_MAX 32 /* Max. size of bitfield is 32 bit. */
+#define CTBSZ_FIELD 127 /* Temp. marker for regular field. */
+#define CTMASK_BITPOS 127
+#define CTMASK_BITBSZ 127
+#define CTMASK_BITCSZ 127
+#define CTSHIFT_BITPOS 0
+#define CTSHIFT_BITBSZ 8
+#define CTSHIFT_BITCSZ 16
+
+#define CTF_INSERT(info, field, val) \
+ info = (info & ~(CTMASK_##field<<CTSHIFT_##field)) | \
+ (((CTSize)(val) & CTMASK_##field) << CTSHIFT_##field)
+
+/* Calling conventions. */
+enum { CTCC_CDECL, CTCC_THISCALL, CTCC_FASTCALL, CTCC_STDCALL };
+
+/* Attribute numbers. */
+enum {
+ CTA_NONE, /* Ignored attribute. Must be zero. */
+ CTA_QUAL, /* Unmerged qualifiers. */
+ CTA_ALIGN, /* Alignment override. */
+ CTA_SUBTYPE, /* Transparent sub-type. */
+ CTA_BAD, /* To catch bad IDs. */
+ CTA__MAX
+};
+
+/* Special sizes. */
+#define CTSIZE_INVALID 0xffffffffu
+
+typedef uint32_t CTInfo; /* Type info. */
+typedef uint32_t CTSize; /* Type size. */
+typedef uint32_t CTypeID; /* Type ID. */
+typedef uint16_t CTypeID1; /* Minimum-sized type ID. */
+
+/* C type table element. */
+typedef struct CType {
+ CTInfo info; /* Type info. */
+ CTSize size; /* Type size or other info. */
+ CTypeID1 sib; /* Sibling element. */
+ CTypeID1 next; /* Next element in hash chain. */
+ GCRef name; /* Element name (GCstr). */
+} CType;
+
+#define CTHASH_SIZE 128 /* Number of hash anchors. */
+#define CTHASH_MASK (CTHASH_SIZE-1)
+
+/* C type state. */
+typedef struct CTState {
+ CType *tab; /* C type table. */
+ CTypeID top; /* Current top of C type table. */
+ MSize sizetab; /* Size of C type table. */
+ lua_State *L; /* Lua state (needed for errors and allocations). */
+ global_State *g; /* Global state. */
+ CTypeID1 hash[CTHASH_SIZE]; /* Hash anchors for C type table. */
+} CTState;
+
+#define CTINFO(ct, flags) (((CTInfo)(ct) << CTSHIFT_NUM) + (flags))
+#define CTALIGN(al) ((CTSize)(al) << CTSHIFT_ALIGN)
+#define CTATTRIB(at) ((CTInfo)(at) << CTSHIFT_ATTRIB)
+
+#define ctype_type(info) ((info) >> CTSHIFT_NUM)
+#define ctype_cid(info) ((CTypeID)((info) & CTMASK_CID))
+#define ctype_align(info) (((info) >> CTSHIFT_ALIGN) & CTMASK_ALIGN)
+#define ctype_attrib(info) (((info) >> CTSHIFT_ATTRIB) & CTMASK_ATTRIB)
+#define ctype_bitpos(info) (((info) >> CTSHIFT_BITPOS) & CTMASK_BITPOS)
+#define ctype_bitbsz(info) (((info) >> CTSHIFT_BITBSZ) & CTMASK_BITBSZ)
+#define ctype_bitcsz(info) (((info) >> CTSHIFT_BITCSZ) & CTMASK_BITCSZ)
+#define ctype_vsizeP(info) (((info) >> CTSHIFT_VSIZEP) & CTMASK_VSIZEP)
+#define ctype_msizeP(info) (((info) >> CTSHIFT_MSIZEP) & CTMASK_MSIZEP)
+
+/* Simple type checks. */
+#define ctype_isnum(info) (ctype_type((info)) == CT_NUM)
+#define ctype_isvoid(info) (ctype_type((info)) == CT_VOID)
+#define ctype_isptr(info) (ctype_type((info)) == CT_PTR)
+#define ctype_isarray(info) (ctype_type((info)) == CT_ARRAY)
+#define ctype_isstruct(info) (ctype_type((info)) == CT_STRUCT)
+#define ctype_isfunc(info) (ctype_type((info)) == CT_FUNC)
+#define ctype_isenum(info) (ctype_type((info)) == CT_ENUM)
+#define ctype_istypedef(info) (ctype_type((info)) == CT_TYPEDEF)
+#define ctype_isattrib(info) (ctype_type((info)) == CT_ATTRIB)
+#define ctype_isfield(info) (ctype_type((info)) == CT_FIELD)
+#define ctype_isbitfield(info) (ctype_type((info)) == CT_BITFIELD)
+#define ctype_isconstval(info) (ctype_type((info)) == CT_CONSTVAL)
+#define ctype_hassize(info) (ctype_type((info)) <= CT_HASSIZE)
+
+/* Combined type and flag checks. */
+#define ctype_isinteger(info) \
+ (((info) & (CTMASK_NUM|CTF_BOOL|CTF_FP)) == CTINFO(CT_NUM, 0))
+#define ctype_isinteger_or_bool(info) \
+ (((info) & (CTMASK_NUM|CTF_FP)) == CTINFO(CT_NUM, 0))
+#define ctype_isbool(info) \
+ (((info) & (CTMASK_NUM|CTF_BOOL)) == CTINFO(CT_NUM, CTF_BOOL))
+#define ctype_isconstchar(ct) \
+ (((ct)->info & (CTMASK_NUM|CTF_CONST|CTF_BOOL|CTF_FP)) == \
+ CTINFO(CT_NUM, CTF_CONST) && (ct)->size == 1)
+
+#define ctype_ispointer(info) \
+ ((ctype_type(info) >> 1) == (CT_PTR >> 1)) /* Pointer or array. */
+#define ctype_isref(info) \
+ (((info) & (CTMASK_NUM|CTF_REF)) == CTINFO(CT_PTR, CTF_REF))
+
+#define ctype_isrefarray(info) \
+ (((info) & (CTMASK_NUM|CTF_VECTOR|CTF_COMPLEX)) == CTINFO(CT_ARRAY, 0))
+#define ctype_isvalarray(info) \
+ (ctype_isarray(info) && (info & (CTF_VECTOR|CTF_COMPLEX)))
+#define ctype_isvector(info) \
+ (((info) & (CTMASK_NUM|CTF_VECTOR)) == CTINFO(CT_ARRAY, CTF_VECTOR))
+#define ctype_iscomplex(info) \
+ (((info) & (CTMASK_NUM|CTF_COMPLEX)) == CTINFO(CT_ARRAY, CTF_COMPLEX))
+
+#define ctype_isvltype(info) \
+ (((info) & ((CTMASK_NUM|CTF_VLA) - (2u<<CTSHIFT_NUM))) == \
+ CTINFO(CT_STRUCT, CTF_VLA)) /* VL array or VL struct. */
+#define ctype_isvlarray(info) \
+ (((info) & (CTMASK_NUM|CTF_VLA)) == CTINFO(CT_ARRAY, CTF_VLA))
+#define ctype_isvlstruct(info) \
+ (((info) & (CTMASK_NUM|CTF_VLA)) == CTINFO(CT_STRUCT, CTF_VLA))
+
+#define ctype_isxattrib(info, at) \
+ (((info) & (CTMASK_NUM|CTATTRIB(CTMASK_ATTRIB))) == \
+ CTINFO(CT_ATTRIB, CTATTRIB(at)))
+
+LJ_STATIC_ASSERT(((int)CT_PTR & (int)CT_ARRAY) == CT_PTR);
+LJ_STATIC_ASSERT(((int)CT_STRUCT & (int)CT_ARRAY) == CT_STRUCT);
+
+/* Target-dependent sizes and alignments. */
+#if LJ_64
+#define CTSIZE_PTR 8
+#define CTALIGN_PTR CTALIGN(3)
+#else
+#define CTSIZE_PTR 4
+#define CTALIGN_PTR CTALIGN(2)
+#endif
+
+#define CTINFO_REF(ref) \
+ CTINFO(CT_PTR, (CTF_CONST|CTF_REF|CTALIGN_PTR) + (ref))
+
+#define CT_MEMALIGN 3 /* Alignment guaranteed by memory allocator. */
+
+/* -- Predefined types ---------------------------------------------------- */
+
+/* Target-dependent types. */
+#if LJ_TARGET_PPC
+#define CTTYDEFP(_) \
+ _(LINT32, 4, CT_NUM, CTF_LONG|CTALIGN(2))
+#else
+#define CTTYDEFP(_)
+#endif
+
+/* Common types. */
+#define CTTYDEF(_) \
+ _(NONE, 0, CT_ATTRIB, CTATTRIB(CTA_BAD)) \
+ _(VOID, -1, CT_VOID, CTALIGN(0)) \
+ _(CVOID, -1, CT_VOID, CTF_CONST|CTALIGN(0)) \
+ _(BOOL, 1, CT_NUM, CTF_BOOL|CTF_UNSIGNED|CTALIGN(0)) \
+ _(CCHAR, 1, CT_NUM, CTF_CONST|CTF_UCHAR|CTALIGN(0)) \
+ _(INT8, 1, CT_NUM, CTALIGN(0)) \
+ _(UINT8, 1, CT_NUM, CTF_UNSIGNED|CTALIGN(0)) \
+ _(INT16, 2, CT_NUM, CTALIGN(1)) \
+ _(UINT16, 2, CT_NUM, CTF_UNSIGNED|CTALIGN(1)) \
+ _(INT32, 4, CT_NUM, CTALIGN(2)) \
+ _(UINT32, 4, CT_NUM, CTF_UNSIGNED|CTALIGN(2)) \
+ _(INT64, 8, CT_NUM, CTF_LONG|CTALIGN(3)) \
+ _(UINT64, 8, CT_NUM, CTF_UNSIGNED|CTF_LONG|CTALIGN(3)) \
+ _(FLOAT, 4, CT_NUM, CTF_FP|CTALIGN(2)) \
+ _(DOUBLE, 8, CT_NUM, CTF_FP|CTALIGN(3)) \
+ _(COMPLEX_FLOAT, 8, CT_ARRAY, CTF_COMPLEX|CTALIGN(2)|CTID_FLOAT) \
+ _(COMPLEX_DOUBLE, 16, CT_ARRAY, CTF_COMPLEX|CTALIGN(3)|CTID_DOUBLE) \
+ _(P_VOID, CTSIZE_PTR, CT_PTR, CTALIGN_PTR|CTID_VOID) \
+ _(P_CVOID, CTSIZE_PTR, CT_PTR, CTALIGN_PTR|CTID_CVOID) \
+ _(P_CCHAR, CTSIZE_PTR, CT_PTR, CTALIGN_PTR|CTID_CCHAR) \
+ _(A_CCHAR, -1, CT_ARRAY, CTF_CONST|CTALIGN(0)|CTID_CCHAR) \
+ _(CTYPEID, 4, CT_ENUM, CTALIGN(2)|CTID_INT32) \
+ CTTYDEFP(_) \
+ /* End of type list. */
+
+/* Public predefined type IDs. */
+enum {
+#define CTTYIDDEF(id, sz, ct, info) CTID_##id,
+CTTYDEF(CTTYIDDEF)
+#undef CTTYIDDEF
+ /* Predefined typedefs and keywords follow. */
+ CTID_MAX = 65536
+};
+
+/* Target-dependent type IDs. */
+#if LJ_64
+#define CTID_INT_PSZ CTID_INT64
+#define CTID_UINT_PSZ CTID_UINT64
+#else
+#define CTID_INT_PSZ CTID_INT32
+#define CTID_UINT_PSZ CTID_UINT32
+#endif
+
+#if LJ_ABI_WIN
+#define CTID_WCHAR CTID_UINT16
+#elif LJ_TARGET_PPC
+#define CTID_WCHAR CTID_LINT32
+#else
+#define CTID_WCHAR CTID_INT32
+#endif
+
+/* -- C tokens and keywords ----------------------------------------------- */
+
+/* C lexer keywords. */
+#define CTOKDEF(_) \
+ _(IDENT, "<identifier>") _(STRING, "<string>") \
+ _(INTEGER, "<integer>") _(EOF, "<eof>") \
+ _(OROR, "||") _(ANDAND, "&&") _(EQ, "==") _(NE, "!=") \
+ _(LE, "<=") _(GE, ">=") _(SHL, "<<") _(SHR, ">>") _(DEREF, "->")
+
+/* Simple declaration specifiers. */
+#define CDSDEF(_) \
+ _(VOID) _(BOOL) _(CHAR) _(INT) _(FP) \
+ _(LONG) _(LONGLONG) _(SHORT) _(COMPLEX) _(SIGNED) _(UNSIGNED) \
+ _(CONST) _(VOLATILE) _(RESTRICT) _(INLINE) \
+ _(TYPEDEF) _(EXTERN) _(STATIC) _(AUTO) _(REGISTER)
+
+/* C keywords. */
+#define CKWDEF(_) \
+ CDSDEF(_) _(EXTENSION) _(ASM) _(ATTRIBUTE) \
+ _(DECLSPEC) _(CCDECL) _(PTRSZ) \
+ _(STRUCT) _(UNION) _(ENUM) \
+ _(SIZEOF) _(ALIGNOF)
+
+/* C token numbers. */
+enum {
+ CTOK_OFS = 255,
+#define CTOKNUM(name, sym) CTOK_##name,
+#define CKWNUM(name) CTOK_##name,
+CTOKDEF(CTOKNUM)
+CKWDEF(CKWNUM)
+#undef CTOKNUM
+#undef CKWNUM
+ CTOK_FIRSTDECL = CTOK_VOID,
+ CTOK_FIRSTSCL = CTOK_TYPEDEF,
+ CTOK_LASTDECLFLAG = CTOK_REGISTER,
+ CTOK_LASTDECL = CTOK_ENUM
+};
+
+/* Declaration specifier flags. */
+enum {
+#define CDSFLAG(name) CDF_##name = (1u << (CTOK_##name - CTOK_FIRSTDECL)),
+CDSDEF(CDSFLAG)
+#undef CDSFLAG
+ CDF__END
+};
+
+#define CDF_SCL (CDF_TYPEDEF|CDF_EXTERN|CDF_STATIC|CDF_AUTO|CDF_REGISTER)
+
+/* -- C type management --------------------------------------------------- */
+
+#define ctype_ctsG(g) (mref((g)->ctype_state, CTState))
+
+/* Get C type state. */
+static LJ_AINLINE CTState *ctype_cts(lua_State *L)
+{
+ CTState *cts = ctype_ctsG(G(L));
+ cts->L = L; /* Save L for errors and allocations. */
+ return cts;
+}
+
+/* Save and restore state of C type table. */
+#define LJ_CTYPE_SAVE(cts) CTState savects_ = *(cts)
+#define LJ_CTYPE_RESTORE(cts) \
+ ((cts)->top = savects_.top, \
+ memcpy((cts)->hash, savects_.hash, sizeof(savects_.hash)))
+
+/* Check C type ID for validity when assertions are enabled. */
+static LJ_AINLINE CTypeID ctype_check(CTState *cts, CTypeID id)
+{
+ lua_assert(id > 0 && id < cts->top); UNUSED(cts);
+ return id;
+}
+
+/* Get C type for C type ID. */
+static LJ_AINLINE CType *ctype_get(CTState *cts, CTypeID id)
+{
+ return &cts->tab[ctype_check(cts, id)];
+}
+
+/* Get C type ID for a C type. */
+#define ctype_typeid(cts, ct) ((CTypeID)((ct) - (cts)->tab))
+
+/* Get child C type. */
+static LJ_AINLINE CType *ctype_child(CTState *cts, CType *ct)
+{
+ lua_assert(!(ctype_isvoid(ct->info) || ctype_isstruct(ct->info) ||
+ ctype_isbitfield(ct->info))); /* These don't have children. */
+ return ctype_get(cts, ctype_cid(ct->info));
+}
+
+/* Get raw type for a C type ID. */
+static LJ_AINLINE CType *ctype_raw(CTState *cts, CTypeID id)
+{
+ CType *ct = ctype_get(cts, id);
+ while (ctype_isattrib(ct->info)) ct = ctype_child(cts, ct);
+ return ct;
+}
+
+/* Get raw type of the child of a C type. */
+static LJ_AINLINE CType *ctype_rawchild(CTState *cts, CType *ct)
+{
+ do { ct = ctype_child(cts, ct); } while (ctype_isattrib(ct->info));
+ return ct;
+}
+
+/* Set the name of a C type table element. */
+static LJ_AINLINE void ctype_setname(CType *ct, GCstr *s)
+{
+ /* NOBARRIER: mark string as fixed -- the C type table is never collected. */
+ fixstring(s);
+ setgcref(ct->name, obj2gco(s));
+}
+
+LJ_FUNC CTypeID lj_ctype_new(CTState *cts, CType **ctp);
+LJ_FUNC CTypeID lj_ctype_intern(CTState *cts, CTInfo info, CTSize size);
+LJ_FUNC void lj_ctype_addname(CTState *cts, CType *ct, CTypeID id);
+LJ_FUNC CTypeID lj_ctype_getname(CTState *cts, CType **ctp, GCstr *name,
+ uint32_t tmask);
+LJ_FUNC CType *lj_ctype_getfield(CTState *cts, CType *ct, GCstr *name,
+ CTSize *ofs);
+LJ_FUNC CType *lj_ctype_rawref(CTState *cts, CTypeID id);
+LJ_FUNC CTSize lj_ctype_size(CTState *cts, CTypeID id);
+LJ_FUNC CTSize lj_ctype_vlsize(CTState *cts, CType *ct, CTSize nelem);
+LJ_FUNC CTInfo lj_ctype_info(CTState *cts, CTypeID id, CTSize *szp);
+LJ_FUNC GCstr *lj_ctype_repr(lua_State *L, CTypeID id, GCstr *name);
+LJ_FUNC GCstr *lj_ctype_repr_int64(lua_State *L, uint64_t n, int isunsigned);
+LJ_FUNC GCstr *lj_ctype_repr_complex(lua_State *L, void *sp, CTSize size);
+LJ_FUNC void lj_ctype_init(lua_State *L);
+LJ_FUNC void lj_ctype_freestate(global_State *g);
+
+#endif
+
+#endif
projects / thirdparty / LuaJIT.git / commitdiff
