random fixes (root path and mmap svp tcache)

git-svn-id: file:///home/notaz/opt/svn/PicoDrive/platform@714 be3aeb3a-fb24-0410-a615-afba39da0efa

common/emu.c

@@ -112,8 +112,7 @@ static int find_bios(int region, char **bios_file)
 
 	for (i = 0; i < count; i++)
 	{
-		plat_get_root_dir(bios_path, sizeof(bios_path));
-		strcat(bios_path, files[i]);
+		emu_make_path(bios_path, files[i], sizeof(bios_path) - 4);
 		strcat(bios_path, ".bin");
 		f = fopen(bios_path, "rb");
 		if (f) break;
@@ -533,18 +532,29 @@ static void romfname_ext(char *dst, const char *prefix, const char *ext)
 	if (ext) strcat(dst, ext);
 }
 
-static void make_config_cfg(char *cfg)
+void emu_make_path(char *buff, const char *end, int size)
 {
-	int len;
-	len = plat_get_root_dir(cfg, 512);
-	strncpy(cfg + len, PicoConfigFile, 512-6-1-len);
+	int pos, end_len;
+
+	end_len = strlen(end);
+	pos = plat_get_root_dir(buff, size);
+	strncpy(buff + pos, end, size - pos);
+	buff[size - 1] = 0;
+	if (pos + end_len > size - 1)
+		lprintf("Warning: path truncated: %s\n", buff);
+}
+
+static void make_config_cfg(char *cfg_buff_512)
+{
+	emu_make_path(cfg_buff_512, PicoConfigFile, 512-6);
 	if (config_slot != 0)
 	{
-		char *p = strrchr(cfg, '.');
-		if (p == NULL) p = cfg + strlen(cfg);
+		char *p = strrchr(cfg_buff_512, '.');
+		if (p == NULL)
+			p = cfg_buff_512 + strlen(cfg_buff_512);
 		sprintf(p, ".%i.cfg", config_slot);
 	}
-	cfg[511] = 0;
+	cfg_buff_512[511] = 0;
 }
 
 static void emu_setDefaultConfig(void)
@@ -650,16 +660,6 @@ int emu_write_config(int is_game)
 }
 
 
-void emu_writelrom(void)
-{
-	char cfg[512];
-	make_config_cfg(cfg);
-	config_writelrom(cfg);
-#ifndef NO_SYNC
-	sync();
-#endif
-}
-
 /* always using built-in font */
 
 #define mk_text_out(name, type, val) \
@@ -1152,14 +1152,17 @@ static void mkdir_path(char *path_with_reserve, int pos, const char *name)
 
 void emu_init(void)
 {
-	char dir[256];
+	char path[512];
 	int pos;
 
 	/* make dirs for saves */
-	pos = plat_get_root_dir(dir, sizeof(dir) - 4);
-	mkdir_path(dir, pos, "mds");
-	mkdir_path(dir, pos, "srm");
-	mkdir_path(dir, pos, "brm");
+	pos = plat_get_root_dir(path, sizeof(path) - 4);
+	mkdir_path(path, pos, "mds");
+	mkdir_path(path, pos, "srm");
+	mkdir_path(path, pos, "brm");
+
+	make_config_cfg(path);
+	config_readlrom(path);
 
 	PicoInit();
 	PicoMessage = plat_status_msg_busy_next;
@@ -1175,8 +1178,14 @@ void emu_finish(void)
 		SRam.changed = 0;
 	}
 
-	if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG))
-		emu_writelrom();
+	if (!(currentConfig.EmuOpt & EOPT_NO_AUTOSVCFG)) {
+		char cfg[512];
+		make_config_cfg(cfg);
+		config_writelrom(cfg);
+#ifndef NO_SYNC
+		sync();
+#endif
+	}
 
 	PicoExit();
 }

common/emu.h

@@ -105,12 +105,12 @@ void  emu_reset_game(void);
 
 int   emu_read_config(int game, int no_defaults);
 int   emu_write_config(int game);
-void  emu_writelrom(void);
 
 char *emu_get_save_fname(int load, int is_sram, int slot);
 int   emu_check_save_file(int slot);
 void  emu_setSaveStateCbs(int gz);
 
+void  emu_make_path(char *buff, const char *end, int size);
 void  emu_update_input(void);
 void  emu_textOut8 (int x, int y, const char *text);
 void  emu_textOut16(int x, int y, const char *text);

common/menu.c

@@ -262,14 +262,17 @@ void menu_init(void)
 	}
 
 	// load custom font and selector (stored as 1st symbol in font table)
-	readpng(menu_font_data, "skin/font.png", READPNG_FONT);
+	emu_make_path(buff, "skin/font.png", sizeof(buff));
+	readpng(menu_font_data, buff, READPNG_FONT);
 	// default selector symbol is '>'
 	memcpy(menu_font_data, menu_font_data + ((int)'>') * me_mfont_w * me_mfont_h / 2,
 		me_mfont_w * me_mfont_h / 2);
-	readpng(menu_font_data, "skin/selector.png", READPNG_SELECTOR);
+	emu_make_path(buff, "skin/selector.png", sizeof(buff));
+	readpng(menu_font_data, buff, READPNG_SELECTOR);
 
 	// load custom colors
-	f = fopen("skin/skin.txt", "r");
+	emu_make_path(buff, "skin/skin.txt", sizeof(buff));
+	f = fopen(buff, "r");
 	if (f != NULL)
 	{
 		lprintf("found skin.txt\n");

gp2x/940ctl.c

@@ -295,15 +295,10 @@ void YM2612Init_940(int baseclock, int rate)
 	{
 		unsigned char ucData[1024];
 		int nRead, i, nLen = 0;
-		char binpath[1024];
+		char binpath[512];
 		FILE *fp;
 
-		strncpy(binpath, g_argv[0], 1023);
-		binpath[1023] = 0;
-		for (i = strlen(binpath); i > 0; i--)
-			if (binpath[i] == '/') { binpath[i] = 0; break; }
-		strcat(binpath, "/" CODE940_FILE);
-
+		emu_make_path(binpath, CODE940_FILE, sizeof(binpath));
 		fp = fopen(binpath, "rb");
 		if(!fp)
 		{

gp2x/plat.c

@@ -78,8 +78,12 @@ void plat_video_menu_enter(int is_rom_loaded)
 	}
 	else
 	{
+		char buff[256];
+
 		// should really only happen once, on startup..
-		readpng(g_screen_ptr, "skin/background.png", READPNG_BG);
+		emu_make_path(buff, "skin/background.png", sizeof(buff));
+		if (readpng(g_screen_ptr, buff, READPNG_BG) < 0)
+			memset(g_screen_ptr, 0, 320*240*2);
 	}
 
 	// copy to buffer2

linux/gp2x.c

@@ -318,8 +318,12 @@ void plat_video_menu_enter(int is_rom_loaded)
 	}
 	else
 	{
+		char buff[256];
+
 		// should really only happen once, on startup..
-		readpng(g_screen_ptr, "skin/background.png", READPNG_BG);
+		emu_make_path(buff, "skin/background.png", sizeof(buff));
+		if (readpng(g_screen_ptr, buff, READPNG_BG) < 0)
+			memset(g_screen_ptr, 0, 320*240*2);
 	}
 
 	memcpy(menu_bg_buffer, g_screen_ptr, 320*240*2);