very crude Windows build (WIP): disable fxlink TUI, gdb bridge

There is no direct replacement for poll() in the Windows API, so I'm
gonna disable the fxlink TUI for now and maybe later figure out how to
do something equivalent, even if more brute-forcey.

.gitignore

@@ -1,5 +1,6 @@
 # Build directory
 build/
+build-win64/
 
 # Documentation drafts
 doc/

CMakeLists.txt

@@ -15,7 +15,7 @@ endif()
 if(NOT FXLINK_DISABLE_SDL2)
   pkg_check_modules(sdl2 REQUIRED sdl2 IMPORTED_TARGET)
 endif()
-pkg_check_modules(ncurses REQUIRED ncurses IMPORTED_TARGET)
+pkg_check_modules(ncurses REQUIRED ncursesw IMPORTED_TARGET)
 
 set(CMAKE_INSTALL_MESSAGE LAZY)
 set(SRC "${CMAKE_CURRENT_SOURCE_DIR}")
@@ -30,8 +30,13 @@ target_include_directories(fxgxa PUBLIC fxgxa/)
 target_link_libraries(fxgxa PkgConfig::libpng)
 
 # fxg1a as a symlink (for compatibility)
-add_custom_target(fxg1a ALL
+if(WIN32)
+  add_custom_target(fxg1a ALL
+    COMMAND ${CMAKE_COMMAND} -E create_symlink "fxgxa.exe" "fxg1a.exe")
+else()
+  add_custom_target(fxg1a ALL
     COMMAND ${CMAKE_COMMAND} -E create_symlink "fxgxa" "fxg1a")
+endif()
 
 # fxsdk
 add_custom_command(OUTPUT "${BIN}/fxsdk.sh"
@@ -86,10 +91,12 @@ if(NOT FXLINK_DISABLE_SDL2)
 endif()
 
 # fxsdk-gdb-bridge
-add_executable(fxsdk-gdb-bridge fxsdk/gdb-bridge.c)
+if(NOT WIN32)
-target_link_libraries(fxsdk-gdb-bridge libfxlink)
+  add_executable(fxsdk-gdb-bridge fxsdk/gdb-bridge.c)
-target_include_directories(fxsdk-gdb-bridge PRIVATE
+  target_link_libraries(fxsdk-gdb-bridge libfxlink)
+  target_include_directories(fxsdk-gdb-bridge PRIVATE
     "${SRC}/fxlink/include")
+endif()
 
 # Install rules
 
@@ -98,7 +105,9 @@ install(PROGRAMS "${BIN}/fxsdk.sh" TYPE BIN RENAME fxsdk)
 install(DIRECTORY fxsdk/assets DESTINATION share/fxsdk)
 install(DIRECTORY fxsdk/scripts DESTINATION share/fxsdk USE_SOURCE_PERMISSIONS)
 install(DIRECTORY fxsdk/cmake/ DESTINATION lib/cmake/fxsdk)
-install(TARGETS fxsdk-gdb-bridge)
+if(NOT WIN32)
+  install(TARGETS fxsdk-gdb-bridge)
+endif()
 # fxgxa, fxg1a
 install(TARGETS fxgxa)
 install(FILES "${BIN}/fxg1a" TYPE BIN)

README.md

@@ -169,3 +169,24 @@ When configuring, you should set an install prefix that you have write access to
 ```
 
 You can then proceed to install the cross-compiler. If in doubt about the order in which you need to install repositories, refer to the [GiteaPC README](https://gitea.planet-casio.com/Lephenixnoir/GiteaPC) or check the `giteapc.make` files of each repository, where dependencies are listed.
+
+## Building for Windows from Arch Linux using a cross-compiler
+
+⚠️ This is experimental/not yet officially supported. Intended to build fxlink only.
+
+_Credits to [Cahute](https://cahuteproject.org/guides/build.html) from which this process is based._
+
+Install the cross-compiler and cross-libraries from AUR.
+
+```bash
+% yay -S python python-toml mingw-w64 \
+    mingw-w64-cmake mingw-w64-libusb mingw-w64-sdl2 mingw-w64-libpng \
+    mingw-w64-ncurses
+```
+
+Configure and build.
+
+```bash
+% x86_64-w64-mingw32-cmake -B build-win64 -DFXLINK_DISABLE_UDISKS2=1 -DFXLINK_DISABLE_POLL=1
+% make -C build-win64
+```

fxgxa/dump.c

@@ -53,7 +53,7 @@ static int check_g1a(int test, struct g1a const *g1a, size_t size,char *status)
 		m("Sequence 2   0x01          0x%02x", h->seq2);
 		return (h->seq2 != 0x01) ? 1:0;
 	case 5:
-		m("File size 1  %-8zu      %u", size,
+		m("File size 1  %-8lu      %u", (unsigned long)size,
 			be32toh(h->filesize_be1));
 		return (be32toh(h->filesize_be1) != size) ? 2:0;
 	case 6:
@@ -66,7 +66,7 @@ static int check_g1a(int test, struct g1a const *g1a, size_t size,char *status)
 			be16toh(h->checksum));
 		return (be16toh(h->checksum) != sum) ? 2:0;
 	case 8:
-		m("File size 2  %-8zu      %u", size,
+		m("File size 2  %-8lu      %u", (unsigned long)size,
 			be32toh(h->filesize_be2));
 		return (be32toh(h->filesize_be2) != size) ? 2:0;
 	default:
@@ -170,7 +170,7 @@ static int check_g3a(int test, struct g3a const *g3a, size_t size,char *status)
 		m("Sequence 2   0x01          0x%02x", h->seq2);
 		return (h->seq2 != 0x01) ? 1:0;
 	case 5:
-		m("File size 1  %-8zu      %u", size,
+		m("File size 1  %-8lu      %u", (unsigned long)size,
 			be32toh(h->filesize_be1));
 		return (be32toh(h->filesize_be1) != size) ? 2:0;
 	case 6:
@@ -183,7 +183,7 @@ static int check_g3a(int test, struct g3a const *g3a, size_t size,char *status)
 			be16toh(h->checksum));
 		return (be16toh(h->checksum) != sum) ? 2:0;
 	case 8:
-		m("File size 2  %-8zu      %u", size - 0x7004,
+		m("File size 2  %-8lu      %u", (unsigned long)size - 0x7004,
 			be32toh(h->filesize_be2));
 		return (be32toh(h->filesize_be2) != size - 0x7004) ? 2:0;
 	case 9:
@@ -192,7 +192,7 @@ static int check_g3a(int test, struct g3a const *g3a, size_t size,char *status)
 			be32toh(h->checksum_2));
 		return (be32toh(h->checksum_2) != sum2) ? 2:0;
 	case 10:
-		m("File size 1  %-8zu      %u", size,
+		m("File size 1  %-8lu      %u", (unsigned long)size,
 			be32toh(h->filesize_be3));
 		return (be32toh(h->filesize_be3) != size) ? 2:0;
 	case 11:

fxgxa/endianness.h

@@ -24,6 +24,42 @@
   #define be64toh(x) OSSwapBigToHostInt64(x)
   #define le64toh(x) OSSwapLittleToHostInt64(x)
 
+#elif defined(__WINDOWS__) || defined(_WIN16) || defined(_WIN32) || defined(_WIN64)
+
+  #include <winsock2.h>
+
+  #if BYTE_ORDER == LITTLE_ENDIAN
+    #define htobe16(x) __builtin_bswap16(x)
+    #define htole16(x) (x)
+    #define be16toh(x) __builtin_bswap16(x)
+    #define le16toh(x) (x)
+
+    #define htobe32(x) __builtin_bswap32(x)
+    #define htole32(x) (x)
+    #define be32toh(x) __builtin_bswap32(x)
+    #define le32toh(x) (x)
+
+    #define htobe64(x) __builtin_bswap64(x)
+    #define htole64(x) (x)
+    #define be64toh(x) __builtin_bswap64(x)
+    #define le64toh(x) (x)
+  #elif BYTE_ORDER == BIG_ENDIAN
+    #define htobe16(x) (x)
+    #define htole16(x) __builtin_bswap16(x)
+    #define be16toh(x) (x)
+    #define le16toh(x) __builtin_bswap16(x)
+
+    #define htobe32(x) (x)
+    #define htole32(x) __builtin_bswap32(x)
+    #define be32toh(x) (x)
+    #define le32toh(x) __builtin_bswap32(x)
+
+    #define htobe64(x) (x)
+    #define htole64(x) __builtin_bswap64(x)
+    #define be64toh(x) (x)
+    #define le64toh(x) __builtin_bswap64(x)
+  #endif
+
 #elif defined(__linux__)
 
   #include <sys/types.h>

fxlink/main.c

@@ -237,7 +237,9 @@ int main(int argc, char **argv)
 		while(repeat);
 	}
 	else if(mode == 't') {
+#ifndef FXLINK_DISABLE_POLL
 		rc = main_tui_interactive(context);
+#endif
 	}
 	else if(mode == 'p') {
 		rc = main_push(filter, &delay, context, argv + optind);

fxlink/tui/command-util.c

@@ -4,6 +4,9 @@
 //    \___/   License: MIT <https://opensource.org/licenses/MIT>             //
 //---------------------------------------------------------------------------//
 
+#include <fxlink/config.h>
+#ifndef FXLINK_DISABLE_POLL
+
 #include "tui.h"
 #include "command-util.h"
 #include <string.h>
@@ -377,3 +380,5 @@ FXLINK_COMMAND("?cmdtree")
     node_dump(cmdtree, 0);
     return 0;
 }
+
+#endif

fxlink/tui/commands.c

@@ -4,6 +4,9 @@
 //    \___/   License: MIT <https://opensource.org/licenses/MIT>             //
 //---------------------------------------------------------------------------//
 
+#include <fxlink/config.h>
+#ifndef FXLINK_DISABLE_POLL
+
 #include "tui.h"
 #include "command-util.h"
 #include <string.h>
@@ -271,3 +274,5 @@ FXLINK_COMMAND("gintctl test all", DEVICE(fdev))
     test_read_unaligned(fdev);
     return 0;
 }
+
+#endif

fxlink/tui/tui-interactive.c

@@ -4,6 +4,9 @@
 //    \___/   License: MIT <https://opensource.org/licenses/MIT>             //
 //---------------------------------------------------------------------------//
 
+#include <fxlink/config.h>
+#ifndef FXLINK_DISABLE_POLL
+
 #include "../fxlink.h"
 #include "tui.h"
 #include <fxlink/tooling/libpng.h>
@@ -202,24 +205,24 @@ static void TUI_render_transfers(void)
         if(!comm)
             continue;
 
-        struct fxlink_transfer *IN = comm->ftransfer_IN;
+        struct fxlink_transfer *in = comm->ftransfer_IN;
-        struct fxlink_transfer *OUT = comm->ftransfer_OUT;
+        struct fxlink_transfer *out = comm->ftransfer_OUT;
 
-        if(IN) {
+        if(in) {
             mvwaddstr(win, y, 1, fxlink_device_id(fdev));
             mvwaddstr(win, y, 10, "IN");
-            mvwaddstr(win, y, 16, fxlink_size_string(IN->msg.size));
+            mvwaddstr(win, y, 16, fxlink_size_string(in->msg.size));
 
             wmove(win, y, 26);
-            progress_bar(win, 32, IN->processed_size, IN->msg.size);
+            progress_bar(win, 32, in->processed_size, in->msg.size);
 
             has_transfers = true;
             y++;
         }
-        if(OUT) {
+        if(out) {
             mvwaddstr(win, y, 1, fxlink_device_id(fdev));
             mvwaddstr(win, y, 10, "OUT");
-            mvwaddstr(win, y, 16, fxlink_size_string(OUT->msg.size));
+            mvwaddstr(win, y, 16, fxlink_size_string(out->msg.size));
             has_transfers = true;
             y++;
         }
@@ -259,10 +262,12 @@ static bool TUI_setup(void)
     memset(&TUI, 0, sizeof TUI);
 
     /* Set up the SINGWINCH handler */
+#if !defined(_WIN16) && !defined(_WIN32) && !defined(_WIN64)
     struct sigaction WINCH;
     sigaction(SIGWINCH, NULL, &WINCH);
     WINCH.sa_handler = TUI_SIGWINCH_handler;
     sigaction(SIGWINCH, &WINCH, NULL);
+#endif
 
     /* Initialize the main screen */
     initscr();
@@ -590,3 +595,5 @@ int main_tui_interactive(libusb_context *ctx)
     TUI_quit();
     return 0;
 }
+
+#endif

libfxlink/defs.c

@@ -47,7 +47,11 @@ char *fxlink_gen_file_name(char const *path, char const *name,
     time_t time_raw;
     struct tm time_bd;
     time(&time_raw);
+#if defined(_WIN16) || defined(_WIN32) || defined(_WIN64)
+    time_bd = *localtime(&time_raw);
+#else
     localtime_r(&time_raw, &time_bd);
+#endif
 
     while(1) {
         asprintf(&filename, "%s/fxlink-%.16s-%04d.%02d.%02d-%02dh%02d-%d%s",
@@ -67,6 +71,7 @@ char *fxlink_gen_file_name(char const *path, char const *name,
     return filename;
 }
 
+#ifndef FXLINK_DISABLE_POLL
 int fxlink_multipoll(int timeout, struct pollfd *fds1, int count1, ...)
 {
     /* Convenience macro to iterate on file descriptor arrays */
@@ -104,6 +109,7 @@ int fxlink_multipoll(int timeout, struct pollfd *fds1, int count1, ...)
     free(concat);
     return rc;
 }
+#endif /* FXLINK_DISABLE_POLL */
 
 char const *fxlink_size_string(int bytes)
 {

libfxlink/devices.c

@@ -635,6 +635,8 @@ bool fxlink_device_start_bulk_OUT(struct fxlink_device *fdev,
 // Polled file descriptor tracking
 //---
 
+#ifndef FXLINK_DISABLE_POLL
+
 static void generate_poll_fds(struct fxlink_pollfds *tracker)
 {
     /* Get the set of libusb file descriptors to poll for news */
@@ -705,6 +707,8 @@ void fxlink_pollfds_stop(struct fxlink_pollfds *tracker)
     memset(tracker, 0, sizeof *tracker);
 }
 
+#endif /* FXLINK_DISABLE_POLL */
+
 //---
 // Device tracking
 //---

libfxlink/filter.c

@@ -29,7 +29,13 @@ static char *read_word(char const **input)
 {
 	char const *str = *input;
 	while(**input && isword(**input)) (*input)++;
-	return strndup(str, *input - str);
+
+	char *rc = malloc(*input - str + 1);
+	if(!rc)
+		return NULL;
+	memcpy(rc, str, *input - str);
+	rc[*input - str] = 0;
+	return rc;
 }
 
 /* Reads a property from the input source. Advances *input and sets *name and

libfxlink/include/fxlink/config.h.in

@@ -13,5 +13,8 @@
 /* Disable SDL2 interfaces. */
 #cmakedefine FXLINK_DISABLE_SDL2
 
+/* Disable poll-based interfaces. */
+#cmakedefine FXLINK_DISABLE_POLL
+
 /* fxSDK version */
 #define FXLINK_VERSION "@CMAKE_PROJECT_VERSION@"

libfxlink/include/fxlink/defs.h

@@ -12,7 +12,10 @@
 #include <stdint.h>
 #include <stdarg.h>
 #include <stdio.h>
-#include <poll.h>
+
+#ifndef FXLINK_DISABLE_POLL
+# include <poll.h>
+#endif
 
 static inline int min(int x, int y)
 {
@@ -84,8 +87,10 @@ char const *fmt_to_ANSI(int format);
 char *fxlink_gen_file_name(char const *path, char const *name,
     char const *suffix);
 
+#ifndef FXLINK_DISABLE_POLL
 /* Modified poll with a variable number of arrays. */
 int fxlink_multipoll(int timeout, struct pollfd *fds1, int count1, ...);
+#endif
 
 /* Write out the given size (in bytes) in a human-readable form. Returns a
    pointer to a statically-allocated string. */

libfxlink/include/fxlink/devices.h

@@ -48,8 +48,8 @@
 #pragma once
 #include <fxlink/protocol.h>
 #include <fxlink/filter.h>
+#include <fxlink/defs.h>
 #include <libusb.h>
-#include <poll.h>
 
 /* Device information tracked for every USB device. */
 struct fxlink_device {
@@ -255,6 +255,8 @@ void fxlink_device_cleanup(struct fxlink_device *fdev);
 // notification API.
 //---
 
+#ifndef FXLINK_DISABLE_POLL
+
 /* Tracker for libusb file descriptors to be polled in a main loop. */
 struct fxlink_pollfds {
     /* libusb context to be tracked (must remain constant) */
@@ -274,6 +276,8 @@ void fxlink_pollfds_track(struct fxlink_pollfds *tracker, libusb_context *ctx);
    called before the tracker structure gets destroyed. */
 void fxlink_pollfds_stop(struct fxlink_pollfds *tracker);
 
+#endif /* FXLINK_DISABLE_POLL */
+
 //---
 // Device tracking
 //

libfxlink/logging.c

@@ -84,7 +84,11 @@ int hlog(char const *fmt, ...)
 {
     time_t t = time(NULL);
     struct tm tm;
+#if defined(_WIN16) || defined(_WIN32) || defined(_WIN64)
+    tm = *localtime(&t);
+#else
     localtime_r(&t, &tm);
+#endif
 
     flog(FMT_WHITE | FMT_DIM, "[%02d:%02d] ", tm.tm_hour, tm.tm_min);
     LOG_VA_ARGS(fmt, flogv(FMT_YELLOW | FMT_DIM, fmt, _args));