int gdbr_write_memory(libgdbr_t *g, ut64 address, const uint8_t *data, ut64 len) {
int ret = 0;
int command_len, pkt, max_cmd_len = 64;
ut64 num_pkts, last, data_sz;
char *tmp;
if (!g || !data) {
return -1;
}
g->stub_features.pkt_sz = R_MAX (g->stub_features.pkt_sz, 64);
data_sz = g->stub_features.pkt_sz / 2;
if (data_sz < 1) {
return -1;
}
num_pkts = len / data_sz;
last = len % data_sz;
if (!(tmp = calloc (max_cmd_len + g->stub_features.pkt_sz, sizeof (char)))) {
return -1;
}
for (pkt = num_pkts - 1; pkt >= 0; pkt--) {
if ((command_len = snprintf (tmp, max_cmd_len,
"%s%016"PFMT64x ",%"PFMT64x ":", CMD_WRITEMEM,
address + (pkt * data_sz), data_sz)) < 0) {
goto fail;
}
pack_hex ((char *) data + (pkt * data_sz), data_sz, (tmp + command_len));
if ((ret = send_msg (g, tmp)) < 0) {
goto fail;
}
if ((ret = read_packet (g)) < 0) {
goto fail;
}
if ((ret = handle_M (g)) < 0) {
goto fail;
}
}
if (last) {
if ((command_len = snprintf (tmp, max_cmd_len,
"%s%016"PFMT64x ",%"PFMT64x ":", CMD_WRITEMEM,
address + (num_pkts * data_sz), last)) < 0) {
goto fail;
}
pack_hex ((char *) data + (num_pkts * data_sz), last, (tmp + command_len));
if ((ret = send_msg (g, tmp)) < 0) {
goto fail;
}
if ((ret = read_packet (g)) < 0) {
goto fail;
}
if ((ret = handle_M (g)) < 0) {
goto fail;
}
}
free (tmp);
return 0;
fail:
free (tmp);
return -1;
}
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_write_memory(libgdbr_t* g, uint64_t address, const uint8_t* data, uint64_t len) {
int ret = 0;
char command[255] = {};
int command_len = snprintf (command, 255, "%s%016lx,%ld:", CMD_WRITEMEM, address, len);
char* tmp = calloc (command_len + (len * 2), sizeof (uint8_t));
if (!tmp) return -1;
memcpy (tmp, command, command_len);
pack_hex ((char*)data, len, (tmp + command_len));
ret = send_command (g, tmp);
free (tmp);
if (ret < 0)
return ret;
if (read_packet (g) > 0) {
parse_packet (g, 0);
return handle_M (g);
}
return -1;
}