static void rcc_element(REgg *egg, char *str) {
REggEmit *e = egg->remit;
char *p = strrchr (str, ',');
int num, num2;
if (CTX) {
nargs = 0;
if (mode == GOTO)
mode = NORMAL; // XXX
while (p) {
*p = '\0';
p = (char *)skipspaces (p+1);
rcc_pusharg (egg, p);
p = strrchr (str, ',');
}
if (callname)
rcc_pusharg (egg, str);
else
if (mode == NORMAL) {
if (!atoi (str)) {
if (dstvar == NULL) /* return string */
dstvar = strdup (".fix0");
rcc_pushstr (egg, str, 1);
}
}
} else {
switch (mode) {
case ALIAS:
e->equ (egg, dstvar, str);
R_FREE (dstvar);
mode = NORMAL;
break;
case SYSCALL:
syscalls[nsyscalls].name = strdup (dstvar);
syscalls[nsyscalls].arg = strdup (str);
nsyscalls++;
R_FREE (dstvar);
break;
case GOTO:
elem[elem_n] = 0;
e->jmp (egg, elem, 0);
break;
default:
p = strchr (str, ',');
if (p) {
*p='\0';
num2 = atoi (p+1);
} else num2 = 0;
num = atoi (str) + num2;
stackframe = num;
stackfixed = num2;
if (mode != NAKED)
e->frame (egg, stackframe+stackfixed);
}
elem[0] = 0;
elem_n = 0;
}
}
R_API char *r_egg_mkvar(REgg *egg, char *out, const char *_str, int delta) {
int i, idx, len, qi;
char *oldstr = NULL, *str = NULL, foo[32], *q, *ret = NULL;
delta += stackfixed; // XXX can be problematic
if (!_str)
return NULL; /* fix segfault, but not badparsing */
/* XXX memory leak */
ret = str = oldstr = strdup (skipspaces (_str));
//if (num || str[0]=='0') { sprintf(out, "$%d", num); ret = out; }
if ( (q = strchr (str, ':')) ) {
*q = '\0';
qi = atoi (q+1);
varsize = (qi==1)? 'b': 'l';
} else varsize='l';
if (*str == '*' || *str == '&') {
varxs = *str;
str++;
} else varxs = 0;
if (str[0] == '.') {
REggEmit *e = egg->remit;
idx = atoi (str+4) + delta + e->size;
if (!strncmp (str+1, "ret", 3)) {
strcpy (out, e->retvar);
} else
if (!strncmp (str+1, "fix", 3)) {
e->get_var (egg, 0, out, idx-stackfixed);
//sprintf(out, "%d(%%"R_BP")", -(atoi(str+4)+delta+R_SZ-stackfixed));
} else
if (!strncmp (str+1, "var", 3)) {
e->get_var (egg, 0, out, idx);
//sprintf(out, "%d(%%"R_BP")", -(atoi(str+4)+delta+R_SZ));
} else
if (!strncmp (str+1, "arg", 3)) {
if (str[4]) {
if (stackframe == 0) {
e->get_var (egg, 1, out, 4); //idx-4);
} else {
e->get_var (egg, 2, out, idx+4);
}
} else {
/* TODO: return size of syscall */
if (callname) {
for (i=0; i<nsyscalls; i++)
if (!strcmp (syscalls[i].name, callname)) {
free (oldstr);
return strdup(syscalls[i].arg);
}
eprintf ("Unknown arg for syscall '%s'\n", callname);
} else eprintf ("NO CALLNAME '%s'\n", callname);
}
} else
if (!strncmp (str+1, "reg", 3)) {
// XXX: can overflow if out is small
if (attsyntax)
snprintf (out, 32, "%%%s", e->regs (egg, atoi (str+4)));
else snprintf (out, 32, "%s", e->regs (egg, atoi (str+4)));
} else {
out = str; /* TODO: show error, invalid var name? */
eprintf ("Something is really wrong\n");
}
ret = strdup(out);
free (oldstr);
} else if (*str=='"' || *str=='\'') {
int mustfilter = *str=='"';
/* TODO: check for room in stackfixed area */
str++;
len = strlen (str)-1;
if (!stackfixed || stackfixed <len)
eprintf ("WARNING: No room in the static stackframe! (%d must be %d)\n",
stackfixed, len);
str[len]='\0';
snprintf (foo, sizeof (foo)-1, ".fix%d", nargs*16); /* XXX FIX DELTA !!!1 */
free(dstvar);
dstvar = strdup (skipspaces (foo));
rcc_pushstr (egg, str, mustfilter);
ret = r_egg_mkvar (egg, out, foo, 0);
free (oldstr);
}
return ret;
}