Refactoring, fix bugs, move loader to itcm (without overwriting exception handlers), support for running Luma standalone

loader/linker.ld

@@ -4,11 +4,18 @@ OUTPUT_ARCH(arm)
 ENTRY(_start)
 SECTIONS
 {
-    . = 0x27FFE000;
+    . = 0x01FF9000;
+    
+    __start__ = ABSOLUTE(.);
 
     .text   : ALIGN(4) { *(.text.start) *(.text*); . = ALIGN(4); }
     .rodata : ALIGN(4) { *(.rodata*); . = ALIGN(4); }
     .data   : ALIGN(4) { *(.data*); . = ALIGN(8); *(.bss* COMMON); . = ALIGN(8); }
 
     . = ALIGN(4);
+
+    __end__ = ABSOLUTE(.);
+
+    __stack_top__    = 0x01FFB800;
+    __stack_bottom__ = 0x01FFA800;
 }

loader/source/main.c

@@ -27,25 +27,29 @@
 void main(int argc, char **argv)
 {
     Firm *firm = (Firm *)0x20001000;
+    char *argvPassed[2],
+         absPath[24 + 255];
     struct fb fbs[2];
-    char absPath[24 + 255];
 
-    if(argc == 2)
-    {
-        struct fb *fbsrc = (struct fb *)argv[1];
-        fbs[0] = fbsrc[0];
-        fbs[1] = fbsrc[1];
-    }
-
-    if(argc >= 1)
+    if(argc > 0)
     {
         u32 i;
         for(i = 0; i < sizeof(absPath) - 1 && argv[0][i] != 0; i++)
             absPath[i] = argv[0][i];
         absPath[i] = 0;
+
+        argvPassed[0] = (char *)absPath;
     }
 
-    char *argvPassed[2] = {absPath, (char *)&fbs};
+    if(argc == 2)
+    {
+        struct fb *fbsrc = (struct fb *)argv[1];
+
+        fbs[0] = fbsrc[0];
+        fbs[1] = fbsrc[1];
+
+        argvPassed[1] = (char *)&fbs;
+    }
 
     launchFirm(firm, argc, argvPassed);
 }

loader/source/start.s

@@ -24,7 +24,7 @@
 .align 4
 .global _start
 _start:
-    ldr sp, =0x27ffe000
+    ldr sp, =__stack_top__
     b main
 
 .text