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tccasm: Support refs to anon symbols from asm

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This happens when e.g. string constants (or other static data)
are passed as operands to inline asm as immediates.  The produced
symbol ref wouldn't be found.  So tighten the connection between
C and asm-local symbol table even more.
This commit is contained in:
Michael Matz
2016-08-26 18:11:19 +02:00
parent dd57a34866
commit 5bd8aeb917
4 changed files with 52 additions and 13 deletions
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13
i386-asm.c
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@ -1437,10 +1437,19 @@ ST_FUNC void subst_asm_operand(CString *add_str,
modifier != 'P')
cstr_ccat(add_str, '$');
if (r & VT_SYM) {
cstr_cat(add_str, get_tok_str(sv->sym->v, NULL), -1);
const char *name = get_tok_str(sv->sym->v, NULL);
if (sv->sym->v >= SYM_FIRST_ANOM) {
/* In case of anonymuous symbols ("L.42", used
for static data labels) we can't find them
in the C symbol table when later looking up
this name. So enter them now into the asm label
list when we still know the symbol. */
get_asm_sym(tok_alloc(name, strlen(name))->tok, sv->sym);
}
cstr_cat(add_str, name, -1);
if ((uint32_t)sv->c.i == 0)
goto no_offset;
cstr_ccat(add_str, '+');
cstr_ccat(add_str, '+');
}
val = sv->c.i;
if (modifier == 'n')