Decompile GF funcs responsible for overlays

9 files changed, 331 insertions, 0 deletions

diff --git a/arm9/lib/include/CARD_rom.h b/arm9/lib/include/CARD_rom.h
new file mode 100644
index 00000000..327bc995
--- /dev/null
+++ b/arm9/lib/include/CARD_rom.h
@@ -0,0 +1,11 @@
+#ifndef NITRO_CARD_ROM_H_
+#define NITRO_CARD_ROM_H_
+
+typedef struct
+{
+    u32 offset;
+    u32 length;
+}
+CARDRomRegion;
+
+#endif //NITRO_CARD_ROM_H_
diff --git a/arm9/lib/include/FS_archive.h b/arm9/lib/include/FS_archive.h
new file mode 100644
index 00000000..65bb2ea1
--- /dev/null
+++ b/arm9/lib/include/FS_archive.h
@@ -0,0 +1,90 @@
+#ifndef NITRO_FS_ARCHIVE_H_
+#define NITRO_FS_ARCHIVE_H_
+
+#include "nitro.h"
+
+#include "OS_thread.h"
+
+struct FSFile;
+struct FSArchive;
+
+typedef enum {
+    FS_COMMAND_ASYNC_BEGIN = 0,
+    FS_COMMAND_READFILE = FS_COMMAND_ASYNC_BEGIN,
+    FS_COMMAND_WRITEFILE,
+    FS_COMMAND_ASYNC_END,
+
+    FS_COMMAND_SYNC_BEGIN = FS_COMMAND_ASYNC_END,
+    FS_COMMAND_SEEKDIR = FS_COMMAND_SYNC_BEGIN,
+    FS_COMMAND_READDIR,
+    FS_COMMAND_FINDPATH,
+    FS_COMMAND_GETPATH,
+    FS_COMMAND_OPENFILEFAST,
+    FS_COMMAND_OPENFILEDIRECT,
+    FS_COMMAND_CLOSEFILE,
+    FS_COMMAND_SYNC_END,
+
+    FS_COMMAND_STATUS_BEGIN = FS_COMMAND_SYNC_END,
+    FS_COMMAND_ACTIVATE = FS_COMMAND_STATUS_BEGIN,
+    FS_COMMAND_IDLE,
+    FS_COMMAND_SUSPEND,
+    FS_COMMAND_RESUME,
+    FS_COMMAND_STATUS_END,
+
+    FS_COMMAND_INVALID
+} FSCommandType;
+
+typedef enum {
+    FS_RESULT_SUCCESS = 0,
+    FS_RESULT_FAILURE,
+    FS_RESULT_BUSY,
+    FS_RESULT_CANCELED,
+    FS_RESULT_CANCELLED = FS_RESULT_CANCELED, // SDK alias
+    FS_RESULT_UNSUPPORTED,
+    FS_RESULT_ERROR,
+    FS_RESULT_PROC_ASYNC,
+    FS_RESULT_PROC_DEFAULT,
+    FS_RESULT_PROC_UNKNOWN
+}
+FSResult;
+
+typedef FSResult (*FS_ARCHIVE_READ_FUNC) (struct FSArchive *p, void *dst, u32 pos, u32 size);
+typedef FSResult (*FS_ARCHIVE_WRITE_FUNC) (struct FSArchive *p, const void *src, u32 pos, u32 size);
+typedef FSResult (*FS_ARCHIVE_PROC_FUNC) (struct FSFile *, FSCommandType);
+
+typedef struct
+{
+    struct FSFile * prev;
+    struct FSFile * next;
+}
+FSFileLink;
+
+typedef struct FSArchive
+{
+    union
+    {
+        char ptr[4];
+        u32 pack;
+    } name;
+    struct FSArchive * prev;
+    struct FSArchive * next;
+    OSThreadQueue sync_q;
+    OSThreadQueue stat_q;
+    u32 flag;
+    FSFileLink list;
+    u32 base;
+    u32 fat;
+    u32 fat_size;
+    u32 fnt;
+    u32 fnt_size;
+    u32 fat_bak;
+    u32 fnt_bak;
+    void * load_mem;
+    FS_ARCHIVE_READ_FUNC read_func;
+    FS_ARCHIVE_WRITE_FUNC write_func;
+    FS_ARCHIVE_READ_FUNC table_func;
+    FS_ARCHIVE_PROC_FUNC proc;
+    u32 proc_flag;
+} FSArchive;
+
+#endif //NITRO_FS_ARCHIVE_H_
diff --git a/arm9/lib/include/FS_file.h b/arm9/lib/include/FS_file.h
new file mode 100644
index 00000000..08a698d0
--- /dev/null
+++ b/arm9/lib/include/FS_file.h
@@ -0,0 +1,164 @@
+#ifndef NITRO_FS_FILE_H_
+#define NITRO_FS_FILE_H_
+
+#include "nitro.h"
+
+#include "FS_archive.h"
+
+struct FSFile;
+
+#define FS_DMA_NOT_USE ((u32)~0)
+
+typedef struct FSDirPos
+{
+    struct FSArchive *arc;
+    u16 own_id;
+    u16 index;
+    u32 pos;
+}
+FSDirPos;
+
+typedef struct FSFileID
+{
+    struct FSArchive *arc;
+    u32 file_id;
+}
+FSFileID;
+
+typedef struct
+{
+    union
+    {
+        FSFileID file_id;
+        FSDirPos dir_id;
+    };
+    u32 is_directory;
+    u32 name_len;
+    char name[128];
+}
+FSDirEntry;
+
+
+typedef struct
+{
+    FSDirPos pos;
+}
+FSSeekDirInfo;
+
+
+typedef struct
+{
+    FSDirEntry *p_entry;
+    BOOL skip_string;
+}
+FSReadDirInfo;
+
+
+typedef struct
+{
+    FSDirPos pos;
+    const char *path;
+    BOOL find_directory;
+    union
+    {
+        FSFileID *file;
+        FSDirPos *dir;
+    }
+        result;
+}
+FSFindPathInfo;
+
+
+typedef struct
+{
+    u8 *buf;
+    u32 buf_len;
+    u16 total_len;
+    u16 dir_id;
+}
+FSGetPathInfo;
+
+
+typedef struct
+{
+    FSFileID id;
+}
+FSOpenFileFastInfo;
+
+
+typedef struct
+{
+    u32 top;
+    u32 bottom;
+    u32 index;
+}
+FSOpenFileDirectInfo;
+
+
+typedef struct
+{
+    u32 reserved;
+}
+FSCloseFileInfo;
+
+
+typedef struct
+{
+    void *dst;
+    u32 len_org;
+    u32 len;
+}
+FSReadFileInfo;
+
+
+typedef struct
+{
+    const void *src;
+    u32 len_org;
+    u32 len;
+}
+FSWriteFileInfo;
+
+typedef struct FSFile
+{
+    FSFileLink link;
+    struct FSArchive *arc;
+    u32 stat;
+    FSCommandType command;
+    FSResult error;
+    OSThreadQueue queue[1];
+    u32 filler; // Figure out what this actually is
+    union {
+        struct
+        {
+            u32 own_id;
+            u32 top;
+            u32 bottom;
+            u32 pos;
+        } file;
+        struct
+        {
+            FSDirPos pos;
+            u32 parent;
+        } dir;
+    } prop;
+
+    union {
+        FSReadFileInfo readfile;
+        FSWriteFileInfo writefile;
+
+        FSSeekDirInfo seekdir;
+        FSReadDirInfo readdir;
+        FSFindPathInfo findpath;
+        FSGetPathInfo getpath;
+        FSOpenFileFastInfo openfilefast;
+        FSOpenFileDirectInfo openfiledirect;
+        FSCloseFileInfo closefile;
+    };
+}
+FSFile;
+
+u32 FS_SetDefaultDMA(u32 dma_no); // returns the previous selection
+void FS_InitFile(FSFile * p_file);
+
+#endif //NITRO_FS_FILE_H_
diff --git a/arm9/lib/include/FS_overlay.h b/arm9/lib/include/FS_overlay.h
new file mode 100644
index 00000000..967169aa
--- /dev/null
+++ b/arm9/lib/include/FS_overlay.h
@@ -0,0 +1,42 @@
+#ifndef NITRO_FS_OVERLAY_H_
+#define NITRO_FS_OVERLAY_H_
+
+#include "nitro.h"
+#include "MI_exMemory.h"
+#include "FS_file.h"
+#include "CARD_rom.h"
+
+typedef u32 FSOverlayID;
+
+typedef void (*FSOverlayInitFunc) (void);
+
+typedef struct FSOverlayInfoHeader
+{
+    u32 id;
+    u8 *ram_address;
+    u32 ram_size;
+    u32 bss_size;
+    FSOverlayInitFunc *sinit_init;
+    FSOverlayInitFunc *sinit_init_end;
+    u32 file_id;
+    u32 compressed:24;
+    u32 flag:8;
+} FSOverlayInfoHeader;
+
+typedef struct FSOverlayInfo
+{
+    FSOverlayInfoHeader header;
+    MIProcessor target;
+    CARDRomRegion file_pos;
+} FSOverlayInfo;
+
+BOOL    FS_LoadOverlayInfo(FSOverlayInfo *p_ovi, MIProcessor target, FSOverlayID id);
+BOOL    FS_LoadOverlay(MIProcessor target, FSOverlayID id);
+BOOL    FS_UnloadOverlay(MIProcessor target, FSOverlayID id);
+BOOL    FS_LoadOverlayImage(FSOverlayInfo *p_ovi);
+void    FS_StartOverlay(FSOverlayInfo *p_ovi);
+BOOL    FS_LoadOverlayImageAsync(FSOverlayInfo *p_ovi, FSFile *p_file);
+void    FS_WaitAsync(FSFile *p_file);
+void    FS_CloseFile(FSFile *p_file);
+
+#endif //NITRO_FS_OVERLAY_H_
diff --git a/arm9/lib/include/MI_exMemory.h b/arm9/lib/include/MI_exMemory.h
new file mode 100644
index 00000000..4a8a10a8
--- /dev/null
+++ b/arm9/lib/include/MI_exMemory.h
@@ -0,0 +1,9 @@
+#ifndef NITRO_MI_EXMEMORY_H_
+#define NITRO_MI_EXMEMORY_H_
+
+typedef enum {
+    MI_PROCESSOR_ARM9 = 0,
+    MI_PROCESSOR_ARM7 = 1
+} MIProcessor;
+
+#endif //NITRO_MI_EXMEMORY_H_
diff --git a/arm9/lib/include/OS_system.h b/arm9/lib/include/OS_system.h
index 93903315..794e16d2 100644
--- a/arm9/lib/include/OS_system.h
+++ b/arm9/lib/include/OS_system.h
@@ -5,6 +5,7 @@
 #ifndef POKEDIAMOND_OS_SYSTEM_H
 #define POKEDIAMOND_OS_SYSTEM_H
 
+#include "function_target.h"
 #include "consts.h"
 
 typedef enum {
diff --git a/arm9/lib/include/OS_thread.h b/arm9/lib/include/OS_thread.h
index 4fb70bf7..207dac1b 100644
--- a/arm9/lib/include/OS_thread.h
+++ b/arm9/lib/include/OS_thread.h
@@ -7,6 +7,14 @@
 
 typedef struct _OSThread OSThread;
 
+struct _OSThreadQueue
+{
+    OSThread *head;
+    OSThread *tail;
+};
+
+typedef struct _OSThreadQueue OSThreadQueue;
+
 typedef struct OSThreadInfo {
     u16 isNeedRescheduling;
     u16 irqDepth;
diff --git a/arm9/lib/include/mmap.h b/arm9/lib/include/mmap.h
index d94df843..56ae08c8 100644
--- a/arm9/lib/include/mmap.h
+++ b/arm9/lib/include/mmap.h
@@ -12,8 +12,10 @@ extern u32 SDK_AUTOLOAD_DTCM_START[];
 #define HW_MAIN_MEM_SHARED_SIZE 0x00001000
 #define HW_MAIN_MEM_DEBUGGER_OFFSET     0x00700000
 
+#define HW_ITCM_IMAGE 0x01000000
 #define HW_ITCM                 0x01FF8000
 #define HW_ITCM_SIZE            0x00008000
+#define HW_ITCM_END (HW_ITCM + HW_ITCM_SIZE)
 
 #define HW_WRAM                 0x037F8000
 
diff --git a/arm9/lib/include/mmap_global.h b/arm9/lib/include/mmap_global.h
new file mode 100644
index 00000000..e657e46f
--- /dev/null
+++ b/arm9/lib/include/mmap_global.h
@@ -0,0 +1,4 @@
+#ifndef NITRO_MMAP_GLOBAL_H_
+#define NITRO_MMAP_GLOBAL_H_
+
+#endif //NITRO_MMAP_GLOBAL_H_