text: Decompile InitGraphics

Co-authored-by: Seth Barberee <seth.barberee@gmail.com>

asm/text.s

@@ -1,102 +0,0 @@
-	#include "asm/constants/gba_constants.inc"
-	#include "asm/macros.inc"
-
-	.syntax unified
-
-	.text
-
-
-
-	thumb_func_start InitGraphics
-InitGraphics:
-	push {r4-r6,lr}
-	ldr r1, _0800978C
-	movs r0, 0x1
-	strb r0, [r1]
-	movs r1, 0xC0
-	lsls r1, 19
-	movs r5, 0
-	ldr r3, _08009790
-	ldr r0, _08009794
-	movs r2, 0
-_080096F4:
-	stm r1!, {r2}
-	adds r5, 0x1
-	cmp r5, r3
-	bls _080096F4
-	movs r1, 0xA0
-	lsls r1, 19
-	movs r5, 0
-	movs r2, 0
-_08009704:
-	stm r1!, {r2}
-	adds r5, 0x1
-	cmp r5, 0xFF
-	bls _08009704
-	movs r1, 0xE0
-	lsls r1, 19
-	movs r5, 0
-	ldr r2, _08009798
-_08009714:
-	stm r1!, {r2}
-	adds r5, 0x1
-	cmp r5, 0xFF
-	bls _08009714
-	ldr r4, _0800979C
-	adds r1, r4, 0
-	bl OpenFileAndGetFileDataPtr
-	adds r6, r0, 0
-	ldr r1, [r6, 0x4]
-	ldm r1!, {r5}
-	ldr r0, _080097A0
-	lsls r2, r5, 5
-	bl CpuCopy
-	adds r0, r6, 0
-	bl CloseFile
-	ldr r0, _080097A4
-	adds r1, r4, 0
-	bl OpenFileAndGetFileDataPtr
-	adds r6, r0, 0
-	ldr r1, [r6, 0x4]
-	ldm r1!, {r5}
-	ldr r0, _080097A8
-	lsls r2, r5, 5
-	bl CpuCopy
-	adds r0, r6, 0
-	bl CloseFile
-	bl InitFontPalette
-	ldr r0, _080097AC
-	adds r1, r4, 0
-	bl OpenFileAndGetFileDataPtr
-	adds r6, r0, 0
-	ldr r4, [r6, 0x4]
-	movs r5, 0
-_08009766:
-	movs r1, 0xF8
-	lsls r1, 1
-	adds r0, r5, r1
-	adds r1, r4, 0
-	bl SetBGPaletteBufferColorArray
-	adds r4, 0x4
-	adds r5, 0x1
-	cmp r5, 0xF
-	ble _08009766
-	adds r0, r6, 0
-	bl CloseFile
-	bl TransferBGPaletteBuffer
-	pop {r4-r6}
-	pop {r0}
-	bx r0
-	.align 2, 0
-_0800978C: .4byte gUnknown_203B090
-_08009790: .4byte 0x00005fff
-_08009794: .4byte gUnknown_80B88B0
-_08009798: .4byte 0x00a000a0
-_0800979C: .4byte gSystemFileArchive
-_080097A0: .4byte 0x06004f00
-_080097A4: .4byte gUnknown_80B88B8
-_080097A8: .4byte 0x06017e00
-_080097AC: .4byte gUnknown_80B88C0
-	thumb_func_end InitGraphics
-
-	.align 2, 0 @ Don't pad with nop.

ld_script.txt

@@ -68,7 +68,6 @@ SECTIONS {
         src/code_800558C.o(.text);
         src/random.o(.text);
         src/text.o(.text);
-        asm/text.o(.text);
         src/code_8009804.o(.text);
         asm/code_8009804.o(.text);
         src/math.o(.text);

src/text.c

@@ -1,5 +1,6 @@
 #include "global.h"
 #include "globaldata.h"
+#include "bg_palette_buffer.h"
 #include "text.h"
 #include "decompress.h"
 #include "code_8009804.h"
@@ -16,6 +17,10 @@ struct CharMapStruct
 
 // data.s
 
+// data2.s
+extern const char gUnknown_80B88B0[]; // "font"
+extern const char gUnknown_80B88B8[]; // "fontsp"
+extern const char gUnknown_80B88C0[]; // "fontsppa"
 
 // system_sbin.s
 extern const struct FileArchive gSystemFileArchive;
@@ -3566,6 +3571,78 @@ static s32 InterpretColorChar(u8 a0)
     return 7;
 }
 
+struct FontData {
+    u32 size;
+    u8 dataArray[136 * 32];
+};
+
+struct FontSpData {
+    u32 size;
+    u8 dataArray[16 * 32];
+};
+
+void InitGraphics(void)
+{
+    u32 count;
+    OpenedFile *file;
+    u32 *dest;
+    struct FontData *font;
+    struct FontSpData *fontSp;
+#ifdef NONMATCHING
+    RGB *data;
+    u32 size;
+    const struct FileArchive *arc;
+#else
+    register RGB *data asm("r4");
+    register u32 size asm("r5");
+    register const struct FileArchive *arc asm("r4");
+#endif
+
+    gUnknown_203B090 = 1;
+    dest = (u32 *)VRAM;
+    for(count = 0; count < 0x6000; count++)
+    {
+        *dest++ = 0;
+    }
+
+    dest = (u32 *)PLTT;
+    for(count = 0; count < 0x100; count++)
+    {
+        *dest++ = 0;
+    }
+
+    dest = (u32 *)OAM;
+    for(count = 0; count < 0x100; count++)
+    {
+         *dest++ = 0x00a000a0;
+    }
+
+    arc = &gSystemFileArchive;
+
+    file = OpenFileAndGetFileDataPtr(gUnknown_80B88B0, arc);
+    font = (struct FontData *)(file->data);
+    size = font->size;
+    CpuCopy((u32 *)0x06004f00, font->dataArray, size * 32);
+    CloseFile(file);
+
+    file = OpenFileAndGetFileDataPtr(gUnknown_80B88B8, arc);
+    fontSp = (struct FontSpData *)(file->data);
+    size = fontSp->size;
+    CpuCopy((u32 *)0x06017e00, fontSp->dataArray, size * 32);
+    CloseFile(file);
+
+    InitFontPalette();
+    file = OpenFileAndGetFileDataPtr(gUnknown_80B88C0, arc);
+    data = (RGB *)file->data;
+
+    for(count = 0; (s32)count < 0x10; data++, count++)
+    {
+        SetBGPaletteBufferColorArray(0x1F0 + count, data);
+    }
+    CloseFile(file);
+    TransferBGPaletteBuffer();
+}
+
 // These functions run from IWRAM for improved performance.
 IWRAM_INIT void sub_8272760(s32 id)
 {