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/* MSPDebug - debugging tool for MSP430 MCUs
* Copyright (C) 2009-2012 Daniel Beer
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "opdb.h"
#include "stab.h"
/* Buffer in which the demangler result will be constructed. */
struct dmbuf {
char *out;
size_t max_len;
size_t len;
};
/* Add a chunk of text to the buffer */
static int dm_append(struct dmbuf *d, const char *text, size_t len)
{
size_t i;
if (d->len + len + 1 > d->max_len)
return -1;
for (i = 0; i < len; i++) {
if (!text[i])
return -1;
d->out[d->len++] = text[i];
}
d->out[d->len] = 0;
return 0;
}
/* Demangle a single component (possibly part of a nested name). */
static int dm_component(struct dmbuf *d, const char *text, const char **out)
{
char *next;
unsigned int len = strtoul(text, &next, 10);
if (next == text)
return -1;
if (dm_append(d, next, len) < 0)
return -1;
if (out)
*out = next + len;
return 0;
}
/* Demangler interface */
int demangle(const char *raw, char *out, size_t max_len)
{
struct dmbuf d;
d.out = out;
d.max_len = max_len;
d.len = 0;
if (*raw != '_' || raw[1] != 'Z')
return -1;
raw += 2;
if (*raw == 'N') {
const char *next;
/* Skip CV qualifiers */
raw++;
while (*raw == 'v' || *raw == 'V' || *raw == 'K')
raw++;
next = raw;
while (*next != 'C' && *next != 'D' && *next != 'E') {
const char *comp = next;
if (d.len > 0 && dm_append(&d, "::", 2) < 0)
return -1;
if (dm_component(&d, comp, &next) < 0)
return -1;
if (*next == 'C' || *next == 'D') {
/* Constructor/Destructor */
if (dm_append(&d, "::", 2) < 0)
return -1;
if (*next == 'D' && dm_append(&d, "~", 1) < 0)
return -1;
if (dm_component(&d, comp, NULL) < 0)
return -1;
}
}
} else {
if (dm_component(&d, raw, NULL) < 0)
return -1;
}
return d.len;
}
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