int stub_main(int arch_reason)
{
int ret;
int gdb_signal;
gdb_signal = decode_signal(arch_reason);
/* Do not announce stop reply if we were detached. */
if (isattached) {
send_stop_reply(gdb_signal);
}
/* We are now attached. */
isattached = 1;
do {
int cmd;
char *p;
while (getpkt(&pktbuf[0], sizeof(pktbuf)) < 1);
p = &pktbuf[0];
cmd = *p;
if ('?' == cmd) {
send_stop_reply(gdb_signal);
ret = 0;
} else if ('c' == cmd) {
ret = handle_c(p);
} else if ('s' == cmd) {
ret = handle_s(p);
} else if ('D' == cmd) {
ret = handle_D(p);
if (ret & CMD_LEAVE) {
isattached = 0;
}
} else if ('g' == cmd) {
ret = handle_g(p);
} else if ('G' == cmd) {
ret = handle_G(p);
} else if ('P' == cmd) {
ret = handle_P(p);
} else if ('m' == cmd) {
ret = handle_m(p);
} else if ('M' == cmd) {
ret = handle_M(p);
} else {
/*
* For any command not supported by the stub, an empty
* response ('$#00') should be returned.
*/
p = "";
ret = CMD_REPLY;
}
if (ret & CMD_REPLY) {
putpkt(p);
}
} while (!(ret & CMD_LEAVE));
return ret;
}
int gdbr_read_memory(libgdbr_t* g, uint64_t address, uint64_t len) {
char command[255] = {};
int ret = snprintf (command, 255, "%s%016lx,%ld", CMD_READMEM, address, len);
if (ret < 0) return ret;
ret = send_command(g, command);
if (ret < 0) return ret;
if (read_packet (g) > 0) {
parse_packet (g, 0);
return handle_m (g);
}
return -1;
}
int gdbr_read_memory(libgdbr_t* g, ut64 address, ut64 len) {
char command[255] = {};
int ret = snprintf(command, 255, "%s%016"PFMT64x",%"PFMT64d, CMD_READMEM, address, len);
if (ret < 0)
return ret;
ret = send_command(g, command);
if (ret < 0)
return ret;
int read_len = read_packet(g);
if (read_len > 0) {
parse_packet(g, 0);
return handle_m(g);
}
return -1;
}
int gdbr_read_memory(libgdbr_t *g, ut64 address, ut64 len) {
char command[64] = {0};
int ret;
ut64 num_pkts, last, data_sz, ret_len;
int pkt;
if (!g) {
return -1;
}
if (len > g->data_max) {
eprintf ("%s: Requested read too long: (%d bytes)\n", __func__, (unsigned) len);
return -1;
}
g->stub_features.pkt_sz = R_MAX (g->stub_features.pkt_sz, 64);
data_sz = g->stub_features.pkt_sz / 2;
num_pkts = len / data_sz;
last = len % data_sz;
ret_len = 0;
ret = 0;
if (last) {
if ((ret = snprintf (command, sizeof (command) - 1,
"%s%016"PFMT64x ",%"PFMT64x, CMD_READMEM,
address + (num_pkts * data_sz),
last)) < 0) {
return -1;
}
if ((ret = send_msg (g, command)) < 0) {
return -1;
}
if ((ret = read_packet (g)) < 0) {
return -1;
}
if ((ret = handle_m (g)) < 0) {
return -1;
}
if (num_pkts) {
memmove (g->data + (num_pkts * data_sz), g->data, g->data_len);
}
ret_len += g->data_len;
}
for (pkt = num_pkts - 1; pkt >= 0; pkt--) {
if ((ret = snprintf (command, sizeof (command) - 1,
"%s%016"PFMT64x ",%"PFMT64x, CMD_READMEM,
address + (pkt * data_sz),
data_sz)) < 0) {
return -1;
}
if ((ret = send_msg (g, command)) < 0) {
return -1;
}
if ((ret = read_packet (g)) < 0) {
return -1;
}
if ((ret = handle_m (g)) < 0) {
return -1;
}
if (pkt) {
memmove (g->data + (pkt * data_sz), g->data, g->data_len);
}
ret_len += g->data_len;
}
g->data_len = ret_len;
return ret;
}
static int gdbr_read_memory_page(libgdbr_t *g, ut64 address, ut8 *buf, int len) {
char command[128] = {0};
int last, ret_len, pkt;
if (!g) {
return -1;
}
if (len < 1) {
return len;
}
g->stub_features.pkt_sz = R_MAX (g->stub_features.pkt_sz, GDB_MAX_PKTSZ);
int data_sz = g->stub_features.pkt_sz / 2;
int num_pkts = len / data_sz;
last = len % data_sz;
ret_len = 0;
for (pkt = 0; pkt < num_pkts; pkt++) {
if (snprintf (command, sizeof (command) - 1,
"%s%"PFMT64x ",%"PFMT64x, CMD_READMEM,
(ut64)address + (pkt * data_sz),
(ut64)data_sz) < 0) {
return -1;
}
if (send_msg (g, command) < 0) {
return -1;
}
if (read_packet (g, false) < 0) {
return -1;
}
if (handle_m (g) < 0) {
return -1;
}
int delta = (pkt * data_sz);
if (delta > len) {
eprintf ("oops\n");
break;
}
int left = R_MIN (g->data_len, len - delta);
if (left > 0) {
memcpy (buf + delta, g->data, left);
ret_len += g->data_len;
}
}
if (last) {
if (snprintf (command, sizeof (command) - 1,
"%s%016"PFMT64x ",%"PFMT64x, CMD_READMEM,
(ut64)(address + (num_pkts * data_sz)),
(ut64)last) < 0) {
return -1;
}
if (send_msg (g, command) < 0) {
return -1;
}
if (read_packet (g, false) < 0) {
return -1;
}
if (handle_m (g) < 0) {
return -1;
}
int delta = num_pkts * data_sz;
int left = R_MIN (g->data_len, len - delta);
if (left > 0) {
memcpy (buf + delta, g->data, left);
ret_len += g->data_len;
}
}
return ret_len;
}
