Port libretro reios params with less intrusive query

core/nullDC.cpp

@@ -15,6 +15,7 @@
 
 #include "webui/server.h"
 #include "hw/naomi/naomi_cart.h"
+#include "reios/reios.h"
 
 settings_t settings;
 
@@ -241,9 +242,12 @@ void dc_stop()
 	sh4_cpu.Stop();
 }
 
+char *configFile;
+
 void LoadCustom()
 {
-	char *configFile = ""; // Replace with code to get a per-game config file
+
+	configFile = reios_disk_id();
 	
 	settings.dynarec.Enable			= cfgLoadInt(configFile,"Dynarec.Enabled", settings.dynarec.Enable ? 1 : 0) != 0;
 	settings.dynarec.idleskip		= cfgLoadInt(configFile,"Dynarec.idleskip", settings.dynarec.idleskip ? 1 : 0) != 0;
@@ -335,6 +339,16 @@ void LoadSettings()
 
 	LoadCustom();
 }
+
+void SaveCustom()
+{
+	cfgSaveInt(configFile,"Dynarec.Enabled",	settings.dynarec.Enable);
+	cfgSaveInt(configFile,"Dreamcast.Cable",	settings.dreamcast.cable);
+	cfgSaveInt(configFile,"Dreamcast.RTC",	settings.dreamcast.RTC);
+	cfgSaveInt(configFile,"Dreamcast.Region",	settings.dreamcast.region);
+	cfgSaveInt(configFile,"Dreamcast.Broadcast",settings.dreamcast.broadcast);
+}
+
 void SaveSettings()
 {
 	cfgSaveInt("config","Dynarec.Enabled",	settings.dynarec.Enable);
@@ -342,4 +356,6 @@ void SaveSettings()
 	cfgSaveInt("config","Dreamcast.RTC",	settings.dreamcast.RTC);
 	cfgSaveInt("config","Dreamcast.Region",	settings.dreamcast.region);
 	cfgSaveInt("config","Dreamcast.Broadcast",settings.dreamcast.broadcast);
+	
+	SaveCustom();
 }

core/reios/reios.cpp

@@ -97,7 +97,52 @@ bool reios_locate_bootfile(const char* bootfile="1ST_READ.BIN") {
 	return false;
 }
 
+char ip_bin[256];
+char reios_hardware_id[17];
+char reios_maker_id[17];
+char reios_device_info[17];
+char reios_area_symbols[9];
+char reios_peripherals[9];
+char reios_product_number[11];
+char reios_product_version[7];
+char reios_releasedate[17];
+char reios_boot_filename[17];
+char reios_software_company[17];
+char reios_software_name[129];
 char reios_bootfile[32];
+
+char* reios_disk_id() {
+
+	if (libGDR_GetDiscType() == GdRom) {
+		base_fad = 45150;
+		descrambl = false;
+	}
+	else {
+		u8 ses[6];
+		libGDR_GetSessionInfo(ses, 0);
+		libGDR_GetSessionInfo(ses, ses[2]);
+		base_fad = (ses[3] << 16) | (ses[4] << 8) | (ses[5] << 0);
+		descrambl = true;
+	}
+	
+	libGDR_ReadSector(GetMemPtr(0x8c008000, 0), base_fad, 256, 2048);
+	memset(ip_bin, 0, sizeof(ip_bin));
+	memcpy(ip_bin, GetMemPtr(0x8c008000, 0), 256);
+	memcpy(&reios_hardware_id[0], &ip_bin[0], 16 * sizeof(char));
+	memcpy(&reios_maker_id[0], &ip_bin[16],   16 * sizeof(char));
+	memcpy(&reios_device_info[0], &ip_bin[32],   16 * sizeof(char));
+	memcpy(&reios_area_symbols[0], &ip_bin[48],   8 * sizeof(char));
+	memcpy(&reios_peripherals[0], &ip_bin[56],   8 * sizeof(char));
+	memcpy(&reios_product_number[0], &ip_bin[64],   10 * sizeof(char));
+	memcpy(&reios_product_version[0], &ip_bin[74],   6 * sizeof(char));
+	memcpy(&reios_releasedate[0], &ip_bin[80],   16 * sizeof(char));
+	memcpy(&reios_boot_filename[0], &ip_bin[96],   16 * sizeof(char));
+	memcpy(&reios_software_company[0], &ip_bin[112],   16 * sizeof(char));
+	memcpy(&reios_software_name[0], &ip_bin[128],   128 * sizeof(char));
+
+	return reios_product_number;
+}
+
 const char* reios_locate_ip() {
 
 	if (libGDR_GetDiscType() == GdRom) {

core/reios/reios.h

@@ -9,4 +9,6 @@ void reios_term();
 
 void DYNACALL reios_trap(u32 op);
 
-#define REIOS_OPCODE 0x085B
+char* reios_disk_id();
+
+#define REIOS_OPCODE 0x085B