Minor stuff

injector/patches/romfsredir.s

@@ -14,8 +14,8 @@
 _start:
 
     ; Jumps here before the fsOpenFileDirectly call
-    _mountSd:
-        b       mountSd
+    _mountArchive:
+        b       mountArchive
         .word   0xdead0000  ; Substituted opcode
         .word   0xdead0001  ; Branch to hooked function
 
@@ -25,42 +25,43 @@ _start:
         .word   0xdead0002  ; Substituted opcode
         .word   0xdead0003  ; Branch to hooked function
 
-    ; Mounts SDMC and registers the archive as 'sdmc:'
-    mountSd:
+    ; Mounts the archive and registers it as 'lf:'
+    mountArchive:
         cmp     r3, #3
-        bne     _mountSd+4
+        bne     _mountArchive + 4
         stmfd   sp!, {r0-r4, lr}
         sub     sp, sp, #4
-        load    r1, archive
+        load    r1, archiveId
         mov     r0, sp
         load    r4, fsMountArchive
         blx     r4
         mov     r3, #0
         mov     r2, #0
         ldr     r1, [sp]
-        addr    r0, sdmcArchiveName
+        addr    r0, archiveName
         load    r4, fsRegisterArchive
         blx     r4
         add     sp, sp, #4
         ldmfd   sp!, {r0-r4, lr}
-        b       _mountSd+4
+        b       _mountArchive + 4
 
     ; Check the path passed to iFileOpen.
     ; If it is trying to access a RomFS file, we try to
-    ; open it from the title folder on the sdcard.
-    ; If the file cannot be opened from the sdcard, we just open
+    ; open it from the LayeredFS folder.
+    ; If the file cannot be opened, we just open
     ; it from its original archive like nothing happened
     fsRedir:
         stmfd   sp!, {r0-r12, lr}
         ldrb    r12, [r1]
-        cmp     r12, #0x72  ; 'r', should include "rom:" and "rom2:"
-        cmpne   r12, #0x70  ; 'p', should include "patch:"
+        cmp     r12, #0x72 ; 'r', should include "rom:", "rom2:" and "rex:"
+        cmpne   r12, #0x70 ; 'p', should include "patch:"
+        cmpne   r12, #0x65 ; 'e', should include "ext:"
         bne 	endRedir
         sub     sp, sp, #0x400
         pathRedir:
             stmfd   sp!, {r0-r3}
             add     r0, sp, #0x10
-            addr    r3, sdmcCustomPath
+            addr    r3, customPath
             pathRedir_1:
                 ldrb    r2, [r3], #1
                 strh    r2, [r0], #2
@@ -69,7 +70,7 @@ _start:
             sub     r0, r0, #2
             pathRedir_2:
                 ldrh    r2, [r1], #2
-                cmp     r2, #0x3A  ; ':'
+                cmp     r2, #0x3A ; ':'
                 bne     pathRedir_2
             pathRedir_3:
                 ldrh    r2, [r1], #2
@@ -78,7 +79,7 @@ _start:
                 bne     pathRedir_3
             ldmfd   sp!, {r0-r3}
         mov     r1, sp
-        bl      _fsRedir+4
+        bl      _fsRedir + 4
         add     sp, sp, #0x400
         cmp     r0, #0
 
@@ -86,16 +87,14 @@ _start:
         ldmfd   sp!, {r0-r12, lr}
         moveq   r0, #0
         bxeq    lr
-        b       _fsRedir+4
+        b       _fsRedir + 4
 
 .pool
 .align 4
-    sdmcArchiveName :       .word 0xdead0007
-                            .dcb ":", 0
-    .align 4
-    fsMountArchive :        .word 0xdead0005
-    fsRegisterArchive :     .word 0xdead0006
-    archive        :        .word 0xdead0008
-    sdmcCustomPath :        .word 0xdead0004
+    archiveName       : .dcb "lf:", 0
+    fsMountArchive    : .word 0xdead0005
+    fsRegisterArchive : .word 0xdead0006
+    archiveId         : .word 0xdead0007
+    customPath        : .word 0xdead0004
 
 .close

injector/source/patcher.c

@@ -278,7 +278,7 @@ static inline void patchCfgGetRegion(u8 *code, u32 size, u8 regionId, u32 CFGUHa
     }
 }
 
-static u32 findFunctionStart(u8* code, u32 pos)
+static u32 findFunctionStart(u8 *code, u32 pos)
 {
     while(pos >= 4)
     {
@@ -289,7 +289,7 @@ static u32 findFunctionStart(u8* code, u32 pos)
     return 0xFFFFFFFF;
 }
 
-static inline bool findLayeredFsSymbols(u8* code, u32 size, u32 *fsMountArchive, u32 *fsRegisterArchive, u32 *fsTryOpenFile, u32 *fsOpenFileDirectly)
+static inline bool findLayeredFsSymbols(u8 *code, u32 size, u32 *fsMountArchive, u32 *fsRegisterArchive, u32 *fsTryOpenFile, u32 *fsOpenFileDirectly)
 {
     for(u32 addr = 0; addr <= size - 4; addr += 4)
     {
@@ -307,12 +307,12 @@ static inline bool findLayeredFsSymbols(u8* code, u32 size, u32 *fsMountArchive,
             }
         }
 
-        if(addr <= size - 12 && *fsRegisterArchive == 0xFFFFFFFF && *(u32 *)(code + addr) == 0xE3500008 && (*(u32 *)(code + addr + 4) & 0xFFF00FF0) == 0xE1800400 && (*(u32 *)(code + addr + 8) & 0xFFF00FF0) == 0xE1800FC0)
+        if(addr <= size - 12 && *fsRegisterArchive == 0xFFFFFFFF && *(u32 *)(code + addr) == 0xE3500008 &&
+           (*(u32 *)(code + addr + 4) & 0xFFF00FF0) == 0xE1800400 && (*(u32 *)(code + addr + 8) & 0xFFF00FF0) == 0xE1800FC0)
             *fsRegisterArchive = findFunctionStart(code, addr);
 
-        if(addr <= size - 16 && *fsTryOpenFile == 0xFFFFFFFF && *(u32 *)(code + addr + 0xC) == 0xE12FFF3C &&
-           ((*(u32 *)(code + addr) == 0xE1A0100D) || (*(u32 *)(code + addr) == 0xE28D1010)) && (*(u32 *)(code + addr + 4) == 0xE590C000) &&
-           ((*(u32 *)(code + addr + 8) == 0xE1A00004) || (*(u32 *)(code + addr + 8) == 0xE1A00005)))
+        if(addr <= size - 0x40 && *fsTryOpenFile == 0xFFFFFFFF && *(u32 *)(code + addr + 4) == 0x1AFFFFFC && *(u32 *)(code + addr) == 0xE351003A &&
+           *(u32 *)(code + addr + 0x34) == 0xE590C000 && *(u32 *)(code + addr + 0x3C) == 0xE12FFF3C)
             *fsTryOpenFile = findFunctionStart(code, addr);
 
         if(*fsOpenFileDirectly == 0xFFFFFFFF && *(u32 *)(code + addr) == 0x08030204)
@@ -324,12 +324,13 @@ static inline bool findLayeredFsSymbols(u8* code, u32 size, u32 *fsMountArchive,
     return false;
 }
 
-static inline bool findLayeredFsPayloadOffset(u8* code, u32 size, u32 *payloadOffset)
+static inline bool findLayeredFsPayloadOffset(u8 *code, u32 size, u32 *payloadOffset)
 {
     //First check for sufficient padding at the end of the .text segment
-    if(((size + 4095) & 0xfffff000) - size >= romfsredir_bin_size)
+    if(((size + 4095) & 0xFFFFF000) - size >= romfsredir_bin_size)
     {
         *payloadOffset = size;
+
         return true;
     }
 
@@ -359,6 +360,7 @@ static inline bool findLayeredFsPayloadOffset(u8* code, u32 size, u32 *payloadOf
         if(func != 0xFFFFFFFF)
         {
             *payloadOffset = func;
+
             return true;
         }
     }
@@ -508,7 +510,7 @@ exit:
     return ret;
 }
 
-static inline bool patchLayeredFs(u64 progId, u8* code, u32 size)
+static inline bool patchLayeredFs(u64 progId, u8 *code, u32 size)
 {
     /* Here we look for "/luma/titles/[u64 titleID in hex, uppercase]/romfs"
        If it exists it should be a folder containing ROMFS files */
@@ -516,11 +518,11 @@ static inline bool patchLayeredFs(u64 progId, u8* code, u32 size)
     char path[] = "/luma/titles/0000000000000000/romfs";
     progIdToStr(path + 28, progId);
 
-    u32 archive = checkLumaDir(path);
+    u32 archiveId = checkLumaDir(path);
 
-    if(!archive) return true;
+    if(!archiveId) return true;
 
-    const char *mount = archive == ARCHIVE_SDMC ? "sdmc:" : "nand:";
+    static const char *archiveName = "lf:";
 
     u32 fsMountArchive = 0xFFFFFFFF,
         fsRegisterArchive = 0xFFFFFFFF,
@@ -554,8 +556,8 @@ static inline bool patchLayeredFs(u64 progId, u8* code, u32 size)
                 payload32[i] = MAKE_BRANCH(payloadOffset + i * 4, fsTryOpenFile + 4);
                 break;
             case 0xdead0004:
-                memcpy(payload32 + i, mount, 5);
-                memcpy((u8 *)(payload32 + i) + 5, path, sizeof(path));
+                memcpy(payload32 + i, archiveName, 3);
+                memcpy((u8 *)(payload32 + i) + 3, path, sizeof(path));
                 break;
             case 0xdead0005:
                 payload32[i] = 0x100000 + fsMountArchive;
@@ -564,10 +566,7 @@ static inline bool patchLayeredFs(u64 progId, u8* code, u32 size)
                 payload32[i] = 0x100000 + fsRegisterArchive;
                 break;
             case 0xdead0007:
-                memcpy(payload32 + i, mount, 4);
-                break;
-            case 0xdead0008:
-                payload32[i] = archive;
+                payload32[i] = archiveId;
                 break;
         }
     }

source/main.c

@@ -240,7 +240,8 @@ boot:
     bool loadFromStorage = CONFIG(LOADEXTFIRMSANDMODULES);
     u32 firmVersion = loadFirm(&firmType, firmSource, loadFromStorage, isSafeMode);
 
-    bool doUnitinfoPatch = CONFIG(PATCHUNITINFO), enableExceptionHandlers = CONFIG(ENABLEEXCEPTIONHANDLERS);
+    bool doUnitinfoPatch = CONFIG(PATCHUNITINFO),
+         enableExceptionHandlers = CONFIG(ENABLEEXCEPTIONHANDLERS);
     u32 res;
     switch(firmType)
     {