/* cleanup all static data used during compilation */
static void tcc_cleanup(void)
{
int i, n;
if (NULL == tcc_state) {
return;
}
tcc_state = NULL;
/* free -D defines */
free_defines (NULL);
/* free tokens */
n = tok_ident - TOK_IDENT;
for (i = 0; i < n; i++) {
free (table_ident[i]);
}
free (table_ident);
/* free sym_pools */
dynarray_reset (&sym_pools, &nb_sym_pools);
/* string buffer */
cstr_free (&tokcstr);
/* reset symbol stack */
sym_free_first = NULL;
/* cleanup from error/setjmp */
macro_ptr = NULL;
}
void
end_new_file(void)
{
while (inctop)
{
struct incstate *p;
p = inctop;
(void)fclose(yyin);
free(current_file);
current_file = p->file;
yyin = p->yyin;
inctop = p->next;
if (p->outp != NULL)
{
free((char *)p->outp);
}
free((char *)p);
}
while (iftop)
{
struct ifstate *p;
p = iftop;
iftop = p->next;
free((char *)p);
}
free_defines();
}
void
start_new_file(FILE *f)
{
struct lpc_predef_s *tmpf;
free_defines();
add_define("_FUNCTION", -1, "");
add_define("LPC4", -1, ""); /* Tell coders this is LPC ver 4.0 */
add_define("CD_DRIVER", -1, "");
#ifdef DEBUG
add_define("DEBUG_DRIVER", -1, "");
#endif
add_define("T_INTEGER" , -1, ltoa(T_NUMBER));
add_define("T_FLOAT" , -1, ltoa(T_FLOAT));
add_define("T_STRING" , -1, ltoa(T_STRING));
add_define("T_OBJECT" , -1, ltoa(T_OBJECT));
add_define("T_FUNCTION", -1, ltoa(T_FUNCTION));
add_define("T_ARRAY" , -1, ltoa(T_POINTER));
add_define("T_MAPPING" , -1, ltoa(T_MAPPING));
for (tmpf = lpc_predefs; tmpf; tmpf = tmpf->next)
{
char namebuf[NSIZE];
char mtext[MLEN];
*mtext='\0';
(void)sscanf(tmpf->flag, "%[^=]=%[ -~=]", namebuf, mtext);
if (strlen(namebuf) >= NSIZE)
fatal("NSIZE exceeded\n");
if (strlen(mtext) >= MLEN)
fatal("MLEN exceeded\n");
add_define(namebuf,-1,mtext);
}
keep1.token = keep2.token = keep3.token = -47;
yyin = f;
slast = '\n';
lastchar = '\n';
inctop = 0; /* If not here, where? */
num_incfiles = 0;
current_incfile = 0;
current_line = 1;
lex_fatal = 0;
incdepth = 0;
nbuf = 0;
outp = defbuf+DEFMAX;
pragma_strict_types = 0;
pragma_no_inherit = pragma_no_clone = pragma_no_shadow = pragma_resident = 0;
nexpands = 0;
}
/*-------------------------------------------------------------------------*/
Bool
assert_simul_efun_object (void)
/* (Re)load the simul_efun object and extract all information we need.
* Result is TRUE if either the simul_efun object could be loaded, or if
* master::get_simul_efun() did not return a string/string vector to
* name the simul efun object. The result is FALSE if master::get_simul_efun()
* specified a simul efun object, which couldn't be found.
*
* In other words: after calling assert_simul_efun_object(), the caller
* still has to check if simul_efun_object is NULL.
*
* At the time of call, simul_efun_object must be NULL.
*/
{
svalue_t *svp;
object_t *ob;
program_t *progp;
CBool *visible; /* Flag for every function: visible or not */
string_t *name;
int i, j, num_fun;
invalidate_simul_efuns(); /* Invalidate the simul_efun information */
free_defines(); /* to prevent #defines hideing places for globals */
/* Get the name(s) of the simul_efun object. */
svp = apply_master(STR_GET_SEFUN, 0);
/* If a simul_efun_object appears during the GET_SEFUN call, it
* might have been due to a recursive get_simul_efun() call which may
* have gotten an old backup copy. This can lead to hard-to-debug
* variable and function definition inconsistencies.
*/
if (simul_efun_object)
{
printf("%s simul_efun object appeared while asking for it.\n", time_stamp());
return MY_TRUE;
}
if (svp == NULL)
{
printf("%s No simul_efun\n", time_stamp());
return MY_TRUE;
}
if (svp->type == T_POINTER)
{
simul_efun_vector = svp->u.vec;
svp->type = T_NUMBER;
if (VEC_SIZE(svp->u.vec))
svp = svp->u.vec->item;
}
if (svp->type != T_STRING)
{
printf("%s No simul_efun\n", time_stamp());
return MY_TRUE;
}
/* Make the (primary) simul_efun name */
name = del_slash(svp->u.str);
if (simul_efun_file_name)
free_mstring(simul_efun_file_name);
simul_efun_file_name = make_tabled(name);
/* Get the object and load the program */
ob = find_object(simul_efun_file_name);
if (ob == NULL)
{
fprintf(stderr, "%s The simul_efun file %s was not loaded.\n"
, time_stamp(), get_txt(simul_efun_file_name));
fprintf(stderr, "%s The function get_simul_efun() in the master must load it.\n"
, time_stamp());
return MY_FALSE;
}
if (O_PROG_SWAPPED(ob) && load_ob_from_swap(ob) < 0)
{
fprintf(stderr, "%s Out of memory (unswap object '%s') ==> "
"No simul_efun\n", time_stamp(), get_txt(ob->name));
return MY_TRUE;
}
reference_prog( (simul_efun_program = ob->prog), "get_simul_efun");
num_fun = ob->prog->num_function_names;
if (num_fun == 0)
return MY_TRUE;
if (!simul_efunp)
{
simul_efunp = xalloc(sizeof (function_t) * num_fun);
}
else
num_fun = total_simul_efun;
free_defines(); /* to prevent #defines hideing places for globals */
/* locals and defines are freed now. There are still reserved words,
* but it is impossible to define a function with the name being
* a reserved word, thus, there will be no clashes with higher-priority
* shared identifiers.
*/
progp = ob->prog;
visible = alloca((i = ob->prog->num_functions) * sizeof(*visible));
memset(visible, 0, i);
i = ob->prog->num_function_names;
while (--i >= 0)
visible[progp->function_names[i]] = MY_TRUE;
/* The functions .num_function_names+1 .. .num_functions are not
* visible by definition.
*/
/* Loop over the functions in the simul_efun object and
* copy the salient information.
*/
for (i = 0; i < ob->prog->num_functions; i++)
{
int ix;
funflag_t flags, flags2;
bytecode_p funstart;
mp_int fun_ix_offs, var_ix_offs;
program_t *inherit_progp;
function_t*funheader;
if (!visible[i])
continue;
ix = i;
flags2 = flags = progp->functions[ix];
flags &= ~FUNSTART_MASK;
/* Pinpoint the function, resolving inheritance where
* necessary.
*/
fun_ix_offs = ix;
var_ix_offs = 0;
inherit_progp = progp;
while (flags2 & NAME_INHERITED)
{
inherit_t *inheritp;
inheritp = &inherit_progp->inherit[flags2 & INHERIT_MASK];
ix -= inheritp->function_index_offset;
var_ix_offs += inheritp->variable_index_offset;
inherit_progp = inheritp->prog;
flags2 = inherit_progp->functions[ix];
}
fun_ix_offs -= ix;
funstart = inherit_progp->program + (flags2 & FUNSTART_MASK);
funheader = inherit_progp->function_headers + FUNCTION_HEADER_INDEX(funstart);
/* Don't stumble over undefined functions */
if (is_undef_function(funstart))
{
flags |= NAME_UNDEFINED;
}
/* If the function is __INIT, pretend it's a private function */
if ( !(flags & (TYPE_MOD_STATIC|TYPE_MOD_PRIVATE|NAME_UNDEFINED)) )
{
if (mstreq(funheader->name, STR_VARINIT))
flags |= TYPE_MOD_PRIVATE;
}
/* If the function is indeed visible, get its information */
if ( !(flags & (TYPE_MOD_STATIC|TYPE_MOD_PROTECTED|TYPE_MOD_PRIVATE|NAME_UNDEFINED)) )
{
string_t *function_name;
ident_t *p;
unsigned char num_arg;
function_name = funheader->name;
num_arg = funheader->num_arg;
/* Find or make the identifier for the function */
p = make_shared_identifier_mstr(function_name, I_TYPE_GLOBAL, 0);
if (p->type == I_TYPE_UNKNOWN)
{
init_global_identifier(p, /* bVariable: */ MY_FALSE);
p->next_all = all_simul_efuns;
all_simul_efuns = p;
}
if (flags & TYPE_MOD_VARARGS)
num_arg = SIMUL_EFUN_VARARGS;
/* Find the proper index in simul_efunp[] */
switch(0) { default: /* TRY... */
/* Try to find a discarded sefun entry with matching
* name, number of arguments and XVARARGS flag to reuse.
*/
if (all_discarded_simul_efun >= 0)
{
int last;
j = all_discarded_simul_efun;
while ( (j = simul_efunp[last = j].offset.next_sefun) >= 0)
{
if (num_arg != simul_efunp[j].num_arg
|| 0 != ((simul_efunp[j].flags ^ flags) & TYPE_MOD_XVARARGS)
)
continue;
if (!mstreq(function_name, simul_efunp[j].name))
continue;
/* Found one: remove it from the 'discarded' list */
simul_efunp[last].offset.next_sefun =
simul_efunp[j].offset.next_sefun;
break;
}
if (j >= 0)
break; /* switch */
}
/* New simul_efun: make a new entry */
(void)ref_mstring(function_name);
j = num_simul_efun++;
if (num_simul_efun > num_fun)
{
num_fun = num_simul_efun + 12;
simul_efunp = rexalloc(simul_efunp
, sizeof (function_t) * num_fun
);
}
simul_efunp[j].name = function_name;
simul_efunp[j].num_arg = num_arg;
} /* switch() */
/* j now indexes the simul_efunp[] entry to use */
p->u.global.sim_efun = j;
simul_efunp[j].flags = funheader->flags;
simul_efunp[j].type = funheader->type;
simul_efunp[j].num_locals = funheader->num_locals;
/* If possible, make an entry in the simul_efun table */
if ((size_t)j < SEFUN_TABLE_SIZE)
{
simul_efun_table[j].funstart = funstart;
simul_efun_table[j].program = inherit_progp;
simul_efun_table[j].function_index_offset = fun_ix_offs;
simul_efun_table[j].variable_index_offset = var_ix_offs;
}
} /* if (function visible) */
} /* for ( all functions) */
total_simul_efun = num_fun;
simul_efun_object = ob;
return MY_TRUE;
} /* get_simul_efun_object() */
/* compile the C file opened in 'file'. Return non zero if errors. */
static int tcc_compile(TCCState *s1)
{
Sym *define_start;
#ifdef INC_DEBUG
printf ("%s: **** new file\n", file->filename);
#endif
preprocess_init (s1);
funcname = "";
/* define some often used types */
int8_type.t = VT_INT8;
int16_type.t = VT_INT16;
int32_type.t = VT_INT32;
int64_type.t = VT_INT64;
char_pointer_type.t = VT_INT8;
mk_pointer (&char_pointer_type);
if (tcc_state->bits != 64) {
size_type.t = VT_INT32;
} else {
size_type.t = VT_INT64;
}
func_old_type.t = VT_FUNC;
func_old_type.ref = sym_push (SYM_FIELD, &int32_type, FUNC_CDECL, FUNC_OLD);
// FIXME: Should depend on the target options too
#ifdef TCC_TARGET_ARM
arm_init_types ();
#endif
#if 0
/* define 'void *alloca(unsigned int)' builtin function */
{
Sym *s1;
p = anon_sym++;
sym = sym_push (p, mk_pointer (VT_VOID), FUNC_CDECL, FUNC_NEW);
s1 = sym_push (SYM_FIELD, VT_UNSIGNED | VT_INT, 0, 0);
s1->next = NULL;
sym->next = s1;
sym_push (TOK_alloca, VT_FUNC | (p << VT_STRUCT_SHIFT), VT_CONST, 0);
}
#endif
define_start = define_stack;
nocode_wanted = 1;
if (setjmp (s1->error_jmp_buf) == 0) {
s1->nb_errors = 0;
s1->error_set_jmp_enabled = 1;
ch = file->buf_ptr[0];
tok_flags = TOK_FLAG_BOL | TOK_FLAG_BOF;
parse_flags = PARSE_FLAG_PREPROCESS | PARSE_FLAG_TOK_NUM;
// pvtop = vtop;
next ();
decl (VT_CONST);
if (tok != TOK_EOF) {
expect ("declaration");
}
#if 0
if (pvtop != vtop) {
fprintf (stderr, "internal compiler error:"
" vstack leak? (%d)", vtop - pvtop);
}
#endif
}
s1->error_set_jmp_enabled = 0;
/* reset define stack, but leave -Dsymbols (may be incorrect if
they are undefined) */
free_defines (define_start);
sym_pop (&global_stack, NULL);
sym_pop (&local_stack, NULL);
return s1->nb_errors != 0? -1: 0;
}