void define_common(char *label, int32_t segment, int32_t size, char *special)
{
union label *lptr;
lptr = find_label(label, 1);
if (!lptr)
return;
if ((lptr->defn.is_global & DEFINED_BIT) &&
(passn == 1 || !(lptr->defn.is_global & COMMON_BIT))) {
nasm_error(ERR_NONFATAL, "symbol `%s' redefined", label);
return;
}
lptr->defn.is_global |= DEFINED_BIT|COMMON_BIT;
if (!islocalchar(label[0])) {
prevlabel = lptr->defn.label;
} else {
nasm_error(ERR_NONFATAL, "attempt to define a local label as a "
"common variable");
return;
}
lptr->defn.segment = segment;
lptr->defn.offset = 0;
if (pass0 == 0)
return;
ofmt->symdef(lptr->defn.label, segment, size, 2,
special ? special : lptr->defn.special);
ofmt->current_dfmt->debug_deflabel(lptr->defn.label, segment, size, 2,
special ? special : lptr->defn.special);
}
void define_common(char *label, long segment, long size, char *special,
struct ofmt *ofmt, efunc error)
{
union label *lptr;
lptr = find_label(label, 1);
if (lptr->defn.is_global & DEFINED_BIT) {
error(ERR_NONFATAL, "symbol `%s' redefined", label);
return;
}
lptr->defn.is_global |= DEFINED_BIT;
if (!islocalchar(label[0])) /* not local, but not special either */
prevlabel = lptr->defn.label;
else
error(ERR_NONFATAL, "attempt to define a local label as a "
"common variable");
lptr->defn.segment = segment;
lptr->defn.offset = 0;
ofmt->symdef(lptr->defn.label, segment, size, 2,
special ? special : lptr->defn.special);
ofmt->current_dfmt->debug_deflabel(lptr->defn.label, segment, size, 2,
special ? special : lptr->defn.
special);
}
void define_label(char *label, int32_t segment, int64_t offset, char *special,
bool is_norm, bool isextrn)
{
union label *lptr;
int exi;
#ifdef DEBUG
#if DEBUG<3
if (!strncmp(label, "debugdump", 9))
#endif
nasm_error(ERR_DEBUG, "define_label (%s, %"PRIx32", %"PRIx64", %s, %d, %d)",
label, segment, offset, special, is_norm, isextrn);
#endif
lptr = find_label(label, 1);
if (!lptr)
return;
if (lptr->defn.is_global & DEFINED_BIT) {
nasm_error(ERR_NONFATAL, "symbol `%s' redefined", label);
return;
}
lptr->defn.is_global |= DEFINED_BIT;
if (isextrn)
lptr->defn.is_global |= EXTERN_BIT;
if (!islocalchar(label[0]) && is_norm) {
/* not local, but not special either */
prevlabel = lptr->defn.label;
} else if (islocal(label) && !*prevlabel) {
nasm_error(ERR_NONFATAL, "attempt to define a local label before any"
" non-local labels");
}
lptr->defn.segment = segment;
lptr->defn.offset = offset;
lptr->defn.is_norm = (!islocalchar(label[0]) && is_norm);
if (pass0 == 1 || (!is_norm && !isextrn && (segment > 0) && (segment & 1))) {
exi = !!(lptr->defn.is_global & GLOBAL_BIT);
if (exi) {
char *xsymbol;
int slen;
slen = strlen(lprefix);
slen += strlen(lptr->defn.label);
slen += strlen(lpostfix);
slen++; /* room for that null char */
xsymbol = nasm_malloc(slen);
snprintf(xsymbol, slen, "%s%s%s", lprefix, lptr->defn.label,
lpostfix);
ofmt->symdef(xsymbol, segment, offset, exi,
special ? special : lptr->defn.special);
ofmt->current_dfmt->debug_deflabel(xsymbol, segment, offset, exi,
special ? special : lptr->defn.special);
/** nasm_free(xsymbol); ! outobj.c stores the pointer; ouch!!! **/
} else {
if ((lptr->defn.is_global & (GLOBAL_BIT | EXTERN_BIT)) != EXTERN_BIT) {
ofmt->symdef(lptr->defn.label, segment, offset, exi,
special ? special : lptr->defn.special);
ofmt->current_dfmt->debug_deflabel(label, segment, offset, exi,
special ? special : lptr->defn.special);
}
}
} /* if (pass0 == 1) */
}
void redefine_label(char *label, int32_t segment, int64_t offset, char *special,
bool is_norm, bool isextrn)
{
union label *lptr;
int exi;
/* This routine possibly ought to check for phase errors. Most assemblers
* check for phase errors at this point. I don't know whether phase errors
* are even possible, nor whether they are checked somewhere else
*/
(void)special; /* Don't warn that this parameter is unused */
(void)is_norm; /* Don't warn that this parameter is unused */
(void)isextrn; /* Don't warn that this parameter is unused */
#ifdef DEBUG
#if DEBUG < 3
if (!strncmp(label, "debugdump", 9))
#endif
nasm_error(ERR_DEBUG, "redefine_label (%s, %"PRIx32", %"PRIx64", %s, %d, %d)",
label, segment, offset, special, is_norm, isextrn);
#endif
lptr = find_label(label, 1);
if (!lptr)
nasm_error(ERR_PANIC, "can't find label `%s' on pass two", label);
if (!islocal(label)) {
if (!islocalchar(*label) && lptr->defn.is_norm)
prevlabel = lptr->defn.label;
}
if (lptr->defn.offset != offset)
global_offset_changed++;
lptr->defn.offset = offset;
lptr->defn.segment = segment;
if (pass0 == 1) {
exi = !!(lptr->defn.is_global & GLOBAL_BIT);
if (exi) {
char *xsymbol;
int slen;
slen = strlen(lprefix);
slen += strlen(lptr->defn.label);
slen += strlen(lpostfix);
slen++; /* room for that null char */
xsymbol = nasm_malloc(slen);
snprintf(xsymbol, slen, "%s%s%s", lprefix, lptr->defn.label,
lpostfix);
ofmt->symdef(xsymbol, segment, offset, exi,
special ? special : lptr->defn.special);
ofmt->current_dfmt->debug_deflabel(xsymbol, segment, offset, exi,
special ? special : lptr->defn.special);
/** nasm_free(xsymbol); ! outobj.c stores the pointer; ouch!!! **/
} else {
if ((lptr->defn.is_global & (GLOBAL_BIT | EXTERN_BIT)) != EXTERN_BIT) {
ofmt->symdef(lptr->defn.label, segment, offset, exi,
special ? special : lptr->defn.special);
ofmt->current_dfmt->debug_deflabel(label, segment, offset, exi,
special ? special : lptr->defn.special);
}
}
} /* if (pass0 == 1) */
}