build, add windows (very experimental)

.github/workflows/ci.yml

@@ -25,6 +25,26 @@ jobs:
     - name: make
       run: LDFLAGS=-Wl,--no-undefined make -j$(getconf _NPROCESSORS_ONLN) -f Makefile.libretro
 
+  build-win32:
+    runs-on: ubuntu-latest
+    container: ghcr.io/irixxxx/toolchain-win32
+    steps:
+    - uses: actions/checkout@v4
+      with:
+        submodules: true
+    - name: build
+      run: |
+        git config --global --add safe.directory $PWD
+        ver=$(cut -d'"' -f2 platform/common/version.h)-$(git rev-parse --short HEAD)
+        ./configure --platform=win32
+        make -j$(getconf _NPROCESSORS_ONLN)
+        mv PicoDrive.zip PicoDrive-win32-$ver.zip
+    - name: artifacts
+      uses: actions/upload-artifact@v4
+      with:
+        name: Win32
+        path: PicoDrive-win32*.zip
+
 
   build-gp2x:
     runs-on: ubuntu-latest

Makefile

@@ -123,6 +123,17 @@ PicoDrive.zip: $(TARGET)
 all: PicoDrive.zip
 endif
 
+ifeq "$(PLATFORM)" "win32"
+PicoDrive.zip: $(TARGET)
+	$(RM) -rf .od_data
+	mkdir .od_data
+	cp -r platform/linux/skin .od_data
+	cp platform/game_def.cfg .od_data
+	$(STRIP) $< -o .od_data/PicoDrive.exe
+	cd .od_data && zip -9 -r ../$@ *
+all: PicoDrive.zip
+endif
+
 ifeq "$(PLATFORM)" "opendingux"
 .od_data: $(TARGET)
 	$(RM) -rf .od_data
@@ -247,6 +258,14 @@ OBJS += platform/ps2/emu.o
 OBJS += platform/ps2/in_ps2.o
 USE_FRONTEND = 1
 endif
+ifeq "$(PLATFORM)" "win32"
+CFLAGS += -DSDL_OVERLAY_2X -DSDL_BUFFER_3X -DSDL_REDRAW_EVT
+OBJS += platform/win32/plat.o
+OBJS += platform/linux/emu.o platform/linux/blit.o # FIXME
+OBJS += platform/common/plat_sdl.o platform/common/inputmap_kbd.o
+OBJS += platform/libpicofe/plat_sdl.o platform/libpicofe/in_sdl.o
+USE_FRONTEND = 1
+endif
 ifeq "$(PLATFORM)" "libretro"
 OBJS += platform/libretro/libretro.o
 ifneq ($(STATIC_LINKING), 1)

configure

@@ -39,7 +39,7 @@ check_define()
 # "" means "autodetect".
 
 # TODO this is annoyingly messy. should have platform and device
-platform_list="generic pandora gph dingux retrofw opendingux[-gcw0] odbeta[-gcw0] miyoo rpi1 rpi2 ps2 psp"
+platform_list="generic pandora gph dingux retrofw opendingux[-gcw0] odbeta[-gcw0] miyoo rpi1 rpi2 ps2 psp win32"
 platform="generic"
 sound_driver_list="oss alsa sdl"
 sound_drivers=""
@@ -160,6 +160,9 @@ set_platform()
     CFLAGS="$CFLAGS -D_EE -G0 -I${PS2SDK}/ee/include -I${PS2SDK}/common/include -I${PS2DEV}/gsKit/include -I${PS2SDK}/ports/include"
     LDFLAGS="$LDFLAGS -Wl,-zmax-page-size=128 -T${PS2SDK}/ee/startup/linkfile -L${PS2SDK}/ee/lib -L${PS2DEV}/gsKit/lib -L${PS2SDK}/ports/lib"
     ;;
+  win32)
+    MFLAGS=""
+    ;;
   *)
     fail "unsupported platform: $platform"
     ;;
@@ -286,7 +289,7 @@ arm*)
 esac
 
 case "$platform" in
-rpi1 | rpi2 | generic | opendingux)
+rpi1 | rpi2 | generic | opendingux | win32)
   need_sdl="yes"
   ;;
 esac

platform/common/menu_pico.c

@@ -103,16 +103,25 @@ static void make_bg(int no_scale, int from_screen)
 
 	if (!no_scale && g_menuscreen_w / w >= 2 && g_menuscreen_h / h >= 2)
 	{
-		u32 t, *d = g_menubg_ptr;
-		d += (g_menuscreen_h / 2 - h * 2 / 2)
-			* g_menuscreen_w / 2;
-		d += (g_menuscreen_w / 2 - w * 2 / 2) / 2;
-		for (y = 0; y < h; y++, src += pp, d += g_menuscreen_w*2/2) {
-			for (x = 0; x < w; x++) {
-				t = src[x];
-				t = (PXMASKH(t,1)>>1) - (PXMASKH(t,3)>>3);
-				t |= t << 16;
-				d[x] = d[x + g_menuscreen_w / 2] = t;
+		int xf = g_menuscreen_w / w, yf = g_menuscreen_h / h;
+		int f = no_scale ? 1 : xf < yf ? xf : yf;
+		int xs = f * w, ys = f * h;
+		unsigned short t;
+		int i, j, k, l;
+
+		x = (g_menuscreen_w - xs)/2, y = (g_menuscreen_h - ys)/2;
+		dst = (short *)g_menubg_ptr + y * g_menuscreen_w + x;
+		for (i = 0; i < h; i++) {
+			for (j = 0; j < w; j++, src++) {
+				t = (PXMASKH(*src,1)>>1) - (PXMASKH(*src,3)>>3);
+				for (l = 0; l < f; l++)
+					*dst++ = t;
+			}
+			src += pp - w;
+			dst += g_menuscreen_w - xs;
+			for (k = 1; k < f; k++) {
+				memcpy(dst, dst-g_menuscreen_w, g_menuscreen_w*2);
+				dst += g_menuscreen_w;
 			}
 		}
 		return;

platform/linux/emu.c

@@ -9,7 +9,9 @@
 
 #include <stdio.h>
 #include <unistd.h>
-#include <sys/mman.h>
+#ifndef __MINGW32__
+#include <sys/mman.h> // MAP_JIT
+#endif
 
 #include "../libpicofe/menu.h"
 #include "../libpicofe/plat.h"