From d8015068aa66910cc4659345fa8e87abcd2a0659 Mon Sep 17 00:00:00 2001
From: Yanis002 <35189056+Yanis002@users.noreply.github.com>
Date: Mon, 17 Feb 2025 16:11:10 +0100
Subject: [PATCH] started main functions

---
 config/eur/arm9/delinks.txt |   3 +
 config/eur/arm9/symbols.txt |   2 +-
 config/jp/arm9/symbols.txt  |   2 +-
 src/Main/Main.cpp           | 134 ++++++++++++++++++++++++++++++++++++
 4 files changed, 139 insertions(+), 2 deletions(-)
 create mode 100644 src/Main/Main.cpp

diff --git a/config/eur/arm9/delinks.txt b/config/eur/arm9/delinks.txt
index 8a91900f..c2a612f5 100644
--- a/config/eur/arm9/delinks.txt
+++ b/config/eur/arm9/delinks.txt
@@ -9,3 +9,6 @@ libs/cpp/src/__register_global_object.c:
     complete
     .text       start:0x0203ce74 end:0x0203ce94
     .bss        start:0x02051ad4 end:0x02051ad8
+
+src/Main/Main.cpp:
+    .text       start:0x02000800 end:0x02000bdc
diff --git a/config/eur/arm9/symbols.txt b/config/eur/arm9/symbols.txt
index ff6f16d8..0d5de340 100644
--- a/config/eur/arm9/symbols.txt
+++ b/config/eur/arm9/symbols.txt
@@ -23,7 +23,7 @@ func_020009fc kind:function(arm,size=0x78) addr:0x020009fc
 AutoloadCallback kind:function(arm,size=0x4) addr:0x02000a74
 func_02000a78 kind:function(arm,size=0xe8) addr:0x02000a78
 func_02000b60 kind:function(arm,size=0x4) addr:0x02000b60
-BuildInfo kind:data(any) addr:0x02000b64
+gBuildInfo kind:data(any) addr:0x02000b64
 main kind:function(arm,size=0x14) addr:0x02000bc8
 func_02000bdc kind:function(thumb,size=0x34) addr:0x02000bdc
 func_02000c10 kind:function(thumb,size=0xcc) addr:0x02000c10
diff --git a/config/jp/arm9/symbols.txt b/config/jp/arm9/symbols.txt
index 51e756a7..f60db802 100644
--- a/config/jp/arm9/symbols.txt
+++ b/config/jp/arm9/symbols.txt
@@ -23,7 +23,7 @@ func_020009fc kind:function(arm,size=0x78) addr:0x020009fc
 AutoloadCallback kind:function(arm,size=0x4) addr:0x02000a74
 func_02000a78 kind:function(arm,size=0xe8) addr:0x02000a78
 func_02000b60 kind:function(arm,size=0x4) addr:0x02000b60
-BuildInfo kind:data(any) addr:0x02000b64
+gBuildInfo kind:data(any) addr:0x02000b64
 main kind:function(arm,size=0x14) addr:0x02000bc8
 func_02000bdc kind:function(thumb,size=0x34) addr:0x02000bdc
 func_02000c10 kind:function(thumb,size=0xcc) addr:0x02000c10
diff --git a/src/Main/Main.cpp b/src/Main/Main.cpp
new file mode 100644
index 00000000..73cecdb7
--- /dev/null
+++ b/src/Main/Main.cpp
@@ -0,0 +1,134 @@
+#include "global.h"
+#include "types.h"
+
+void func_0203b920(void);
+void func_02011da0(void);
+void func_0203cdb8(void);
+void main(void);
+
+void func_02000a78(void);
+void* func_0200093c(unk32, u32*, unk32);
+void func_020009fc(void);
+void func_02000950(unk32*);
+void func_01ffbd70(void);
+
+#define UNK_027FFF9C (*(u32*)0x027FFF9C)
+#define REG_IME (*(u32*)0x04000208)
+#define REG_VCOUNT (*(u32*)0x04000006)
+#define RAM_PALETTES ((u32*)0x05000000)
+#define RAM_OAM ((u32*)0x07000000)
+
+typedef void (*UnkStruct_027e0000_Callback)(void);
+struct UnkStruct_027e0000 {
+    unk8 mUnk_00[0x3FFC];
+    UnkStruct_027e0000_Callback mUnk_3FFC;
+};
+extern UnkStruct_027e0000* data_027e0000;
+
+extern unk32* data_0204cde0;
+extern unk32* data_0204cdf8;
+extern unk32* data_02044dc0;
+extern unk32* data_02044dc0;
+
+struct BuildInfo {
+    /* 00 */ unk32* mUnk_00;
+    /* 04 */ unk32* mUnk_04;
+    /* 08 */ unk32* mUnk_08;
+    /* 0C */ unk32* mUnk_0C;
+    /* 10 */ unk32* mUnk_10;
+    /* 14 */ unk32* mUnk_14;
+    /* 18 */ unk32 mUnk_18;
+    /* 1C */ unk32 mUnk_1C;
+    /* 20 */ unk32 mUnk_20;
+    /* 24 */ char mUnk_24[28];
+    /* 3D */ char mUnk_3D[40];
+};
+extern BuildInfo gBuildInfo;
+
+struct UnkStruct_02049a2c {
+    /* 00 */ unk8 mUnk_00[0xE8];
+    /* E8 */
+
+    void func_02013394(void);
+};
+extern UnkStruct_02049a2c* data_02049a2c;
+
+// non-matching
+ARM void Entry(void) {
+    unk32* puVar1;
+    unk32* puVar2;
+    u32 uVar3;
+    unk32* puVar4;
+
+    REG_IME = 0x04000000;
+
+    do {
+    } while (REG_VCOUNT != 0x0);
+
+    func_02000a78();
+    func_0200093c(0, (u32*)data_027e0000, 0x4000);
+    func_0200093c(0, RAM_PALETTES, 0x400);
+    func_0200093c(0x200, RAM_OAM, 0x400);
+    func_02000950(gBuildInfo.mUnk_14);
+    func_020009fc();
+    puVar4 = gBuildInfo.mUnk_10;
+    puVar1 = gBuildInfo.mUnk_0C;
+
+    for (puVar2 = puVar1; puVar2 < puVar4; puVar2 = puVar2 + 0x1) {
+        *puVar2 = 0x0;
+    }
+
+    uVar3 = (u32)puVar1 & 0xFFFFFFE0;
+
+    do {
+        // inline asm?
+        // coproc_moveto_Data_Synchronization(0x0);
+        // coproc_moveto_Invalidate_Instruction_Cache_by_MVA(uVar3);
+        // coproc_moveto_Invalidate_Data_Cache_by_MVA(uVar3);
+        uVar3 = uVar3 + 0x20;
+    } while ((int)uVar3 < (int)puVar4);
+
+    UNK_027FFF9C = 0x0;
+    data_027e0000->mUnk_3FFC = func_01ffbd70;
+
+    func_0203b920();
+    func_02011da0();
+    func_0203cdb8();
+    main();
+}
+
+// non-matching
+ARM void* func_0200093c(unk32 param1, u32* param2, unk32 param3) {
+    u32* p = param2 + param3;
+
+    while (param2 < p) {
+        *p++ = param1;
+    }
+
+    return param2;
+}
+
+void AutoloadCallback(void) {
+}
+
+void func_02000b60(void) {
+}
+
+BuildInfo gBuildInfo = {
+    .mUnk_00 = data_0204cde0,
+    .mUnk_04 = data_0204cdf8,
+    .mUnk_08 = data_02044dc0,
+    .mUnk_0C = data_02044dc0,
+    .mUnk_10 = (unk32*)0x02051AE0,
+    .mUnk_14 = NULL,
+    .mUnk_18 = 0x04027539,
+    .mUnk_1C = 0x04027539,
+    .mUnk_20 = 0xDEC00621,
+    "\xDE\xC0\x06![SDK+NINTENDO:BACKUP]",
+    "[SDK+MEI:libASR_V1.0.5-CW2.0-SDK4.0]"
+};
+
+// non-matching
+void main(void) {
+    data_02049a2c->func_02013394();
+}