Luma3DS-3GX/diffs/1.diff

diff -uNr a/include/brahma.h b/include/brahma.h
--- a/include/brahma.h	2016-09-21 16:18:56.246840000 +0200
+++ b/include/brahma.h	2016-09-21 16:20:28.975957322 +0200
@@ -4,7 +4,7 @@
 
 u32 brahma_init (void);
 u32 brahma_exit (void);
-s32 load_arm9_payload_offset (char *filename, u32 offset, u32 max_psize);
+s32 load_arm9_payload_offset (void);
 s32 load_arm9_payload_from_mem (u8* data, u32 dsize);
 void redirect_codeflow (u32 *dst_addr, u32 *src_addr);
 s32 map_arm9_payload (void);
@@ -13,8 +13,6 @@
 s32 get_exploit_data (struct exploit_data *data);
 s32 firm_reboot ();
 
-#define load_arm9_payload(filename) load_arm9_payload_offset(filename, 0, 0)
-
 #define BRAHMA_NETWORK_PORT 80
 
 #define ARM_JUMPOUT 0xE51FF004 // LDR PC, [PC, -#04]
diff -uNr a/source/brahma.c b/source/brahma.c
--- a/source/brahma.c	2016-09-21 16:18:56.246840000 +0200
+++ b/source/brahma.c	2016-09-21 16:21:33.240730777 +0200
@@ -179,39 +179,56 @@
 	return g_ext_arm9_loaded;
 }
 
-/* reads ARM9 payload from a given path.
-   filename: full path of payload
-   offset: offset of the payload in the file
-   max_psize: the maximum size of the payload that should be loaded (if 0, ARM9_MAX_PAYLOAD_SIZE. Should be smaller than ARM9_MAX_PAYLOAD_SIZE)
+/* reads Luma payload
    returns: 0 on failure, 1 on success */
-s32 load_arm9_payload_offset (char *filename, u32 offset, u32 max_psize) {
+s32 load_arm9_payload_offset (void) {
 	s32 result = 0;
 	u32 fsize = 0;
 	u32 psize = 0;
+	bool use_default = true;
+	FILE *f;
 
-	if (max_psize == 0 || max_psize > ARM9_PAYLOAD_MAX_SIZE)
-		max_psize = ARM9_PAYLOAD_MAX_SIZE;
+	FILE *p = fopen("/luma/path.txt", "r");
 
-	if (!filename)
-		return result;
+	if (p) {
+		fseek(p , 0, SEEK_END);
+		psize = ftell(p);
+		if (psize < 39 && psize > 5) {
+			char path[psize + 1];
+
+			fseek(p, 0, SEEK_SET);
+			u32 bytes_read = fread(path, 1, psize, p);
+
+			if (bytes_read == psize) {
+				if (path[psize - 1] == 0xA) psize--;
+				if (path[psize - 1] == 0xD) psize--;
+				if (psize > 5 && path[0] == '/' && memcmp(&path[psize - 4], ".bin", 4)) {
+					path[psize] = 0;
+					f = fopen(path, "rb");
+					use_default = false;
+				}
+			}
+		}
+	fclose(p);
+	}
+
+	if (use_default) f = fopen("/arm9loaderhax.bin", "rb");
+
+	u32 max_size = ARM9_PAYLOAD_MAX_SIZE;
 
-	FILE *f = fopen(filename, "rb");
 	if (f) {
-		fseek(f , 0, SEEK_END);
+		fseek(f, 0, SEEK_END);
 		fsize = ftell(f);
 
-		if (offset < fsize) {
-			psize = fsize - offset;
-			if (psize > max_psize)
-				psize = max_psize;
-
-			g_ext_arm9_size = psize;
-
-			fseek(f, offset, SEEK_SET);
-			if (psize >= 8) {
-				u32 bytes_read = fread(g_ext_arm9_buf, 1, psize, f);
-				result = (g_ext_arm9_loaded = (bytes_read == psize));
-			}
+		if (fsize > max_size)
+			fsize = max_size;
+
+		g_ext_arm9_size = fsize;
+
+		fseek(f, 0, SEEK_SET);
+		if (fsize >= 8) {
+			u32 bytes_read = fread(g_ext_arm9_buf, 1, fsize, f);
+			result = (g_ext_arm9_loaded = (bytes_read == fsize));
 		}
 		fclose(f);
 	}
diff -uNr a/source/main.c b/source/main.c
--- a/source/main.c	2016-09-21 16:18:56.246840000 +0200
+++ b/source/main.c	2016-09-21 16:20:28.979957377 +0200
@@ -10,7 +10,7 @@
 
 int main (void) {
     if (brahma_init()) {
-        if (load_arm9_payload_offset("/" LAUNCHER_PATH, 0x12000, 0x10000) != 1)
+        if (load_arm9_payload_offset() != 1)
             goto error;
         firm_reboot();
         brahma_exit();