gdb: add original gdb bridge by @redoste
Authored-by: redoste <redoste@redoste.xyz>
This commit is contained in:
parent
0134f37f7d
commit
87a2feff15
GPG Key ID:
1BBA026E13FC0495
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@ -85,12 +85,19 @@ if(NOT FXLINK_DISABLE_SDL2)
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target_link_libraries(fxlink PkgConfig::sdl2)
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endif()
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# fxsdk-gdb-bridge
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add_executable(fxsdk-gdb-bridge fxsdk/gdb-bridge.c)
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target_link_libraries(fxsdk-gdb-bridge libfxlink)
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target_include_directories(fxsdk-gdb-bridge PRIVATE
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"${SRC}/fxlink/include")
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# Install rules
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# fxsdk
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install(PROGRAMS "${BIN}/fxsdk.sh" TYPE BIN RENAME fxsdk)
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install(DIRECTORY fxsdk/assets DESTINATION share/fxsdk)
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install(DIRECTORY fxsdk/cmake/ DESTINATION lib/cmake/fxsdk)
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install(TARGETS fxsdk-gdb-bridge)
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# fxgxa, fxg1a
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install(TARGETS fxgxa)
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install(FILES "${BIN}/fxg1a" TYPE BIN)
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@ -0,0 +1,170 @@
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#include <assert.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <sys/ioctl.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#include <unistd.h>
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#include <libusb.h>
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#include <fxlink/devices.h>
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#include <fxlink/filter.h>
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#include <fxlink/logging.h>
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static struct fxlink_device* setup_calc(libusb_context* context) {
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struct fxlink_filter filter = {
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.intf_fxlink = true,
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};
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delay_t delay = delay_infinite();
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fxlink_filter_clean_libusb(&filter);
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hlog("calculators");
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log_("wating for fxlink capable device...\n");
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struct fxlink_device* dev = fxlink_device_find_wait(context, &filter, &delay);
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if (!dev) {
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elog("unable to open fxlink_device\n");
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return NULL;
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}
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if (!fxlink_device_claim_fxlink(dev)) {
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elog("unable to claim fxlink\n");
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return NULL;
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}
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return dev;
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}
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static int setup_socket(const char* listen_path) {
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int listen_socket = socket(AF_UNIX, SOCK_STREAM, 0);
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if (listen_socket < 0) {
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perror("socket");
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return -1;
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}
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struct sockaddr_un listen_address = {
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.sun_family = AF_UNIX,
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.sun_path = {0},
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};
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strncpy(listen_address.sun_path, listen_path, sizeof(listen_address.sun_path) - 1);
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if (bind(listen_socket, (struct sockaddr*)&listen_address, sizeof(listen_address)) < 0) {
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close(listen_socket);
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perror("bind");
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return -1;
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}
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if (listen(listen_socket, 1024) < 0) {
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close(listen_socket);
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perror("listen");
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return -1;
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}
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hlog("socket");
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log_("wating for client on \"%s\"...\n", listen_address.sun_path);
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int client_socket = accept(listen_socket, NULL, NULL);
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if (client_socket < 0) {
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close(listen_socket);
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perror("accept");
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return -1;
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}
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close(listen_socket);
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return client_socket;
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}
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int main(int argc, char* argv[]) {
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if (argc != 2) {
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elog("Usage : %s [listen path]\n", argv[0]);
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return -1;
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}
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libusb_context* context = NULL;
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int err = libusb_init(&context);
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if (err != 0) {
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elog_libusb(err, "libusb_init");
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return -1;
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}
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struct fxlink_device* dev = setup_calc(context);
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if (dev == NULL) {
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return -1;
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}
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int client_socket = setup_socket(argv[1]);
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if (client_socket < 0) {
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return -1;
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}
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struct pollfd client_socket_pollfd = {.fd = client_socket, .events = POLLIN};
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struct fxlink_pollfds fxlink_polled_fds;
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fxlink_pollfds_track(&fxlink_polled_fds, context);
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if (!fxlink_device_start_bulk_IN(dev)) {
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elog("unable to start bulk IN trasfer\n");
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return -1;
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}
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// TODO : find a way to properly close socket or USB interface when the other side is disconnected
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int ret = 0;
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while (1) {
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int err = fxlink_multipoll(-1, fxlink_polled_fds.fds, fxlink_polled_fds.count,
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&client_socket_pollfd, 1,
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NULL);
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if (err < 0) {
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perror("poll");
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ret = -1;
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break;
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}
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struct timeval zero = {0};
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libusb_handle_events_timeout(context, &zero);
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struct fxlink_message* msg;
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while ((msg = fxlink_device_finish_bulk_IN(dev)) != NULL) {
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if (!fxlink_message_is_apptype(msg, "gdb", "remote")) {
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elog("unknown fxlink message type\n");
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ret = -1;
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break;
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}
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ssize_t send_ret = send(client_socket, msg->data, msg->size, 0);
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if (send_ret != msg->size) {
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perror("send");
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ret = -1;
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break;
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}
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fxlink_message_free(msg, true);
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fxlink_device_start_bulk_IN(dev);
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}
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if (ret != 0) {
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break;
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}
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// We don't want to start a new OUT transfer if another one is still in progress
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if (!dev->comm->ftransfer_OUT) {
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int bytes_socket;
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if (ioctl(client_socket, FIONREAD, &bytes_socket) < 0) {
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perror("ioctl");
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ret = -1;
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break;
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}
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if (bytes_socket > 0) {
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char buf[1024];
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ssize_t recv_ret = recv(client_socket, buf, sizeof(buf), 0);
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if (recv_ret < 0) {
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perror("recv");
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ret = -1;
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break;
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}
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if (!fxlink_device_start_bulk_OUT(dev, "gdb", "remote", buf, recv_ret, false)) {
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elog("unable to start bulk OUT trasfer\n");
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ret = -1;
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break;
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}
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}
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}
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}
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fxlink_pollfds_stop(&fxlink_polled_fds);
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fxlink_device_cleanup(dev);
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free(dev);
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libusb_exit(context);
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return ret;
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}
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