(PSP) add support for kernel-mode functions through a loadable module.

Makefile.psp1

@@ -1,5 +1,5 @@
 BUILD_PRX			= 1
-DEBUG			      = 0
+DEBUG			    = 0
 HAVE_FILE_LOGGER	= 0
 HAVE_THREADS 		= 0
 
@@ -15,11 +15,11 @@ INCDIR = $(PSPPATH)/include
 CFLAGS = $(OPTIMIZE_LV) -G0 -std=gnu99 -ffast-math
 ASFLAGS = $(CFLAGS)
 
-RARCH_DEFINES = -DPSP -DHAVE_LIBRETRO_MANAGEMENT -DHAVE_ZLIB -DWANT_MINIZ -DHAVE_GRIFFIN=1 -DRARCH_INTERNAL -DRARCH_CONSOLE -DHAVE_MENU -DHAVE_RGUI -DWANT_RPNG -DSINC_LOWEST_QUALITY -DHAVE_CC_RESAMPLER
+RARCH_DEFINES = -DPSP -D_MIPS_ARCH_ALLEGREX1 -DHAVE_LIBRETRO_MANAGEMENT -DHAVE_ZLIB -DWANT_MINIZ -DHAVE_GRIFFIN=1 -DRARCH_INTERNAL -DRARCH_CONSOLE -DHAVE_MENU -DHAVE_RGUI -DWANT_RPNG -DSINC_LOWEST_QUALITY -DHAVE_CC_RESAMPLER
 
 LIBDIR =
 LDFLAGS =
-LIBS = -lretro_psp1 -lstdc++ -lpspgu -lpspgum -lm -lpspaudio -lpspfpu -lpsppower
+LIBS = -lretro_psp1 -lstdc++ -lpspgu -lpspgum -lm -lpspaudio -lpspfpu -lpsppower -lpsprtc
 
 ifeq ($(HAVE_THREADS), 1)
 RARCH_DEFINES += -DHAVE_THREADS
@@ -36,7 +36,7 @@ CFLAGS += $(RARCH_DEFINES)
 EXTRA_TARGETS = EBOOT.PBP
 PSP_EBOOT_TITLE = RetroArch PSP1
 
-PSP_OBJECTS = griffin/griffin.o
+PSP_OBJECTS = griffin/griffin.o psp1/kernelFunctions.o
 
 OBJS = $(PSP_OBJECTS)
 

frontend/platform/platform_psp.c

@@ -18,6 +18,7 @@
 #include <pspdebug.h>
 #include <pspfpu.h>
 #include <psppower.h>
+#include <pspsdk.h>
 
 #include <stdint.h>
 #include "../../boolean.h"
@@ -61,7 +62,7 @@ static void frontend_psp_get_environment_settings(int *argc, char *argv[],
    fill_pathname_basedir(default_paths.port_dir, argv[0], sizeof(default_paths.port_dir));
    RARCH_LOG("port dir: [%s]\n", default_paths.port_dir);
 
-   fill_pathname_join(default_paths.asset_dir, default_paths.port_dir, "media", sizeof(default_paths.asset_dir));
+   fill_pathname_join(default_paths.assets_dir, default_paths.port_dir, "media", sizeof(default_paths.assets_dir));
    fill_pathname_join(default_paths.core_dir, default_paths.port_dir, "cores", sizeof(default_paths.core_dir));
    fill_pathname_join(default_paths.core_info_dir, default_paths.port_dir, "cores", sizeof(default_paths.core_info_dir));
    fill_pathname_join(default_paths.savestate_dir, default_paths.core_dir, "savestates", sizeof(default_paths.savestate_dir));
@@ -126,6 +127,8 @@ static void frontend_psp_init(void *data)
    
    pspFpuSetEnable(0);//disable FPU exceptions
    scePowerSetClockFrequency(333,333,166);
+
+   pspSdkLoadStartModule("kernelFunctions.prx", PSP_MEMORY_PARTITION_KERNEL);
 }
 
 static void frontend_psp_deinit(void *data)

input/psp_input.c

@@ -30,6 +30,7 @@
 #include "../driver.h"
 #include "../libretro.h"
 #include "../general.h"
+#include "../psp1/kernelFunctions.h"
 
 enum {
    PSP_GAMEPAD_CROSS =			      1ULL << 0,
@@ -128,6 +129,7 @@ static void psp_input_poll(void *data)
 #endif
    sceCtrlSetSamplingMode(DEFAULT_SAMPLING_MODE);
    ret = CtrlPeekBufferPositive(0, &state_tmp, 1);
+   state_tmp.Buttons = (state_tmp.Buttons&0x0000FFFF)|(readSystemButtons()&0xFFFF0000);
    (void)ret;
 
    psp->analog_state[0][0][0] = psp->analog_state[0][0][1] = psp->analog_state[0][1][0] = psp->analog_state[0][1][1] = 0;
@@ -159,12 +161,7 @@ static void psp_input_poll(void *data)
 
    *lifecycle_state &= ~((1ULL << RARCH_MENU_TOGGLE));
 
-   if (
+   if (STATE_BUTTON(state_tmp) & PSP_CTRL_NOTE)
-            (psp->pad_state & (1ULL << RETRO_DEVICE_ID_JOYPAD_L))
-         && (psp->pad_state & (1ULL << RETRO_DEVICE_ID_JOYPAD_R))
-         && (psp->pad_state & (1ULL << RETRO_DEVICE_ID_JOYPAD_SELECT))
-         && (psp->pad_state & (1ULL << RETRO_DEVICE_ID_JOYPAD_START))
-         )
       *lifecycle_state |= (1ULL << RARCH_MENU_TOGGLE);
 
    if (g_settings.input.autodetect_enable)

psp1/kernelFunctionsPrx/Makefile

@@ -0,0 +1,30 @@
+TARGET = kernelFunctions
+OBJS = main.o
+PSP_FW_VERSION = 150
+
+INCDIR =
+CFLAGS = -O2 -G0 -Wall
+CXXFLAGS = $(CFLAGS) -fno-exceptions -fno-rtti
+ASFLAGS = $(CFLAGS)
+
+BUILD_PRX = 1
+PRX_EXPORTS = $(TARGET).exp
+
+USE_KERNEL_LIBC=1
+USE_KERNEL_LIBS=1
+
+LIBDIR =
+LDFLAGS = -mno-crt0 -nostartfiles
+LIBS = -lpspdebug -lpspge -lpspsdk -lc -lpspuser
+PSPSDK=$(shell psp-config --pspsdk-path)
+include $(PSPSDK)/lib/build.mak
+
+all:
+	psp-build-exports -s $(PRX_EXPORTS)
+	cp $(TARGET).prx ../../$(TARGET).prx
+	cp $(TARGET).S ../$(TARGET).S
+	cp $(TARGET).h ../$(TARGET).h
+	rm -f $(TARGET).prx
+	rm -f $(TARGET).S
+	rm -f *.o
+	rm -f *.elf

psp1/kernelFunctionsPrx/kernelFunctions.exp

@@ -0,0 +1,16 @@
+# Define the exports for the prx
+PSP_BEGIN_EXPORTS
+
+# These four lines are mandatory (although you can add other functions like module_stop)
+# syslib is a psynonym for the single mandatory export.
+PSP_EXPORT_START(syslib, 0, 0x8000)
+PSP_EXPORT_FUNC_HASH(module_start)
+PSP_EXPORT_VAR_HASH(module_info)
+PSP_EXPORT_END
+
+PSP_EXPORT_START(kernelFunctions, 0, 0x4001)
+PSP_EXPORT_FUNC(readSystemButtons)
+PSP_EXPORT_FUNC(loadGame)
+PSP_EXPORT_END
+
+PSP_END_EXPORTS

psp1/kernelFunctionsPrx/kernelFunctions.h

@@ -0,0 +1,15 @@
+#ifndef SYSTEMBUTTONS_PRX_H
+#define SYSTEMBUTTONS_PRX_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+unsigned int readSystemButtons(void);
+void loadGame( const char* fileName, void * argp);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* SYSTEMBUTTONS_PRX_H */

psp1/kernelFunctionsPrx/main.c

@@ -0,0 +1,88 @@
+#include <stdio.h>
+
+#include <pspdebug.h>
+#include <pspsdk.h>
+#include <pspctrl.h>
+#include <psploadexec_kernel.h>
+#include <pspthreadman_kernel.h>
+#include <string.h>
+
+PSP_MODULE_INFO("kernelFunctions", PSP_MODULE_KERNEL, 0, 0);
+PSP_MAIN_THREAD_ATTR(0);
+
+
+static volatile int thread_active;
+static unsigned int buttons;
+static SceUID main_thread;
+
+static int mainThread(SceSize args, void *argp)
+{
+	SceCtrlData paddata;
+
+	thread_active = 1;
+
+   while (thread_active)
+	{
+      sceCtrlPeekBufferPositive(&paddata, 1);
+		buttons = paddata.Buttons;
+		sceKernelDelayThread(1000000/60);
+	}
+
+	sceKernelExitThread(0);
+
+	return 0;
+}
+
+
+unsigned int readSystemButtons(void)
+{
+	return buttons;
+}
+
+void loadGame(const char* fileName, void * argp){
+   thread_active = 0;
+   struct SceKernelLoadExecVSHParam game_param;
+   pspDebugScreenClear();
+
+   memset(&game_param,0,sizeof(game_param));
+
+   game_param.size = sizeof(game_param);
+   game_param.args = strlen(argp)+1;
+   game_param.argp = argp;
+   game_param.key  = "game";
+   game_param.vshmain_args_size = 0;
+   game_param.vshmain_args = NULL;
+   game_param.configfile = 0;
+   game_param.unk4 = 0;
+   game_param.unk5 = 0x10000;
+
+   pspSdkSetK1(0);
+   sceKernelSuspendAllUserThreads();
+   sceKernelLoadExecVSHMs2(fileName, &game_param);
+}
+
+int module_start(SceSize args, void *argp)
+{
+   (void)args;
+   (void)argp;
+
+	buttons = 0;
+	thread_active = 0;   
+	main_thread = sceKernelCreateThread("main Thread", mainThread, 0x11, 0x200, 0, NULL);
+
+   if (main_thread >= 0)
+		sceKernelStartThread(main_thread, 0, 0);
+
+	return 0;
+}
+
+
+int module_stop(void)
+{
+	if (main_thread >= 0)
+	{
+		thread_active = 0;
+		sceKernelWaitThreadEnd(main_thread, NULL);
+	}
+	return 0;
+}

settings.c

@@ -487,8 +487,10 @@ void config_set_defaults(void)
       strlcpy(g_settings.libretro, default_paths.core_path, sizeof(g_settings.libretro));
    if (*default_paths.core_info_dir)
       strlcpy(g_settings.libretro_info_path, default_paths.core_info_dir, sizeof(g_settings.libretro_info_path));
+#ifdef HAVE_OVERLAY
    if (*default_paths.overlay_dir)
       strlcpy(g_extern.overlay_dir, default_paths.overlay_dir, sizeof(g_extern.overlay_dir));
+#endif
    if (*default_paths.shader_dir)
       strlcpy(g_settings.video.shader_dir, default_paths.shader_dir, sizeof(g_settings.video.shader_dir));
    if (*default_paths.savestate_dir)