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