m_DLF.c OK (#170)

* m_DLF.c OK

* added comment

5 files changed, 112 insertions, 12 deletions

diff --git a/include/6792F0.h b/include/6792F0.h
deleted file mode 100644
index 7101adc..0000000
--- a/include/6792F0.h
+++ /dev/null
@@ -1,9 +0,0 @@
-#ifndef C_6792F0_H
-#define C_6792F0_H
-
-#include "ultra64.h"
-
-// void func_80055650_jp();
-// void func_8005578C_jp();
-
-#endif
diff --git a/include/m_DLF.h b/include/m_DLF.h
new file mode 100644
index 0000000..c522580
--- /dev/null
+++ b/include/m_DLF.h
@@ -0,0 +1,12 @@
+#ifndef M_DLF_H
+#define M_DLF_H
+
+#include "global.h"
+#include "libc64/malloc.h"
+#include "game.h"
+#include "ovlmgr.h"
+
+void Overlay_LoadGameState(GameStateOverlay* overlayEntry);
+void Overlay_FreeGameState(GameStateOverlay* overlayEntry);
+
+#endif
diff --git a/linker_scripts/jp/symbol_addrs_code.txt b/linker_scripts/jp/symbol_addrs_code.txt
index 647d7da..30576ac 100644
--- a/linker_scripts/jp/symbol_addrs_code.txt
+++ b/linker_scripts/jp/symbol_addrs_code.txt
@@ -55,8 +55,8 @@ func_80055214_jp = 0x80055214; // type:func
 func_80055248_jp = 0x80055248; // type:func
 func_800554D8_jp = 0x800554D8; // type:func
 Evw_Anime_Set = 0x80055598; // type:func
-func_80055650_jp = 0x80055650; // type:func
-func_8005578C_jp = 0x8005578C; // type:func
+Overlay_LoadGameState = 0x80055650; // type:func
+Overlay_FreeGameState = 0x8005578C; // type:func
 mAGrw_ClearDebugData = 0x800558B0; // type:func
 mAGrw_CheckRegistedData_debug = 0x800558F8; // type:func
 mAGrw_SetBlockData_debug = 0x800559D4; // type:func
diff --git a/src/code/m_DLF.c b/src/code/m_DLF.c
new file mode 100644
index 0000000..0bfb4e9
--- /dev/null
+++ b/src/code/m_DLF.c
@@ -0,0 +1,97 @@
+#include "m_DLF.h"
+
+// Function names taken from Zelda64 Decompilation
+
+void Overlay_LoadGameState(GameStateOverlay* overlayEntry) {
+    void* vramStart;
+
+    if (overlayEntry->loadedRamAddr != NULL) {
+        return;
+    }
+
+    vramStart = overlayEntry->vramStart;
+    if (vramStart == NULL) {
+        overlayEntry->unk_28 = 0;
+        return;
+    }
+
+    overlayEntry->loadedRamAddr = malloc_r((uintptr_t)overlayEntry->vramEnd - (uintptr_t)vramStart);
+
+    if (overlayEntry->loadedRamAddr != NULL) {
+        ovlmgr_Load(overlayEntry->vromStart, overlayEntry->vromEnd, overlayEntry->vramStart, overlayEntry->vramEnd,
+                    overlayEntry->loadedRamAddr);
+        overlayEntry->unk_14 =
+            (void*)((overlayEntry->unk_14 != NULL)
+                        ? (void*)((uintptr_t)overlayEntry->unk_14 - (intptr_t)((uintptr_t)overlayEntry->vramStart -
+                                                                               (uintptr_t)overlayEntry->loadedRamAddr))
+                        : NULL);
+
+        overlayEntry->init =
+            (void*)((overlayEntry->init != NULL)
+                        ? (void*)((uintptr_t)overlayEntry->init - (intptr_t)((uintptr_t)overlayEntry->vramStart -
+                                                                             (uintptr_t)overlayEntry->loadedRamAddr))
+                        : NULL);
+
+        overlayEntry->destroy =
+            (void*)((overlayEntry->destroy != NULL)
+                        ? (void*)((uintptr_t)overlayEntry->destroy - (intptr_t)((uintptr_t)overlayEntry->vramStart -
+                                                                                (uintptr_t)overlayEntry->loadedRamAddr))
+                        : NULL);
+
+        overlayEntry->unk_20 =
+            (void*)((overlayEntry->unk_20 != NULL)
+                        ? (void*)((uintptr_t)overlayEntry->unk_20 - (intptr_t)((uintptr_t)overlayEntry->vramStart -
+                                                                               (uintptr_t)overlayEntry->loadedRamAddr))
+                        : NULL);
+
+        overlayEntry->unk_24 =
+            (void*)((overlayEntry->unk_24 != NULL)
+                        ? (void*)((uintptr_t)overlayEntry->unk_24 - (intptr_t)((uintptr_t)overlayEntry->vramStart -
+                                                                               (uintptr_t)overlayEntry->loadedRamAddr))
+                        : NULL);
+
+        overlayEntry->unk_28 = 0;
+    }
+}
+
+void Overlay_FreeGameState(GameStateOverlay* overlayEntry) {
+    s32 var_v0;
+
+    if (overlayEntry->loadedRamAddr != NULL) {
+        var_v0 = (overlayEntry->unk_28 != 0) ? -1 : 0;
+        if (var_v0 == 0) {
+            overlayEntry->unk_14 =
+                (void*)((overlayEntry->unk_14 != NULL) ? (void*)((uintptr_t)overlayEntry->unk_14 +
+                                                                 (intptr_t)((uintptr_t)overlayEntry->vramStart -
+                                                                            (uintptr_t)overlayEntry->loadedRamAddr))
+                                                       : NULL);
+
+            overlayEntry->init =
+                (void*)((overlayEntry->init != NULL) ? (void*)((uintptr_t)overlayEntry->init +
+                                                               (intptr_t)((uintptr_t)overlayEntry->vramStart -
+                                                                          (uintptr_t)overlayEntry->loadedRamAddr))
+                                                     : NULL);
+
+            overlayEntry->destroy =
+                (void*)((overlayEntry->destroy != NULL) ? (void*)((uintptr_t)overlayEntry->destroy +
+                                                                  (intptr_t)((uintptr_t)overlayEntry->vramStart -
+                                                                             (uintptr_t)overlayEntry->loadedRamAddr))
+                                                        : NULL);
+
+            overlayEntry->unk_20 =
+                (void*)((overlayEntry->unk_20 != NULL) ? (void*)((uintptr_t)overlayEntry->unk_20 +
+                                                                 (intptr_t)((uintptr_t)overlayEntry->vramStart -
+                                                                            (uintptr_t)overlayEntry->loadedRamAddr))
+                                                       : NULL);
+
+            overlayEntry->unk_24 =
+                (void*)((overlayEntry->unk_24 != NULL) ? (void*)((uintptr_t)overlayEntry->unk_24 +
+                                                                 (intptr_t)((uintptr_t)overlayEntry->vramStart -
+                                                                            (uintptr_t)overlayEntry->loadedRamAddr))
+                                                       : NULL);
+
+            free(overlayEntry->loadedRamAddr);
+            overlayEntry->loadedRamAddr = NULL;
+        }
+    }
+}
diff --git a/yamls/jp/code.yaml b/yamls/jp/code.yaml
index 1c2e5ef..c4f22b9 100644
--- a/yamls/jp/code.yaml
+++ b/yamls/jp/code.yaml
@@ -8,7 +8,7 @@
     subsegments:
       - [0x675720, c, code/c_keyframe]
       - [0x678660, asm, code/evw_anime]
-      - [0x6792F0, asm, code/6792F0]
+      - [0x6792F0, c, code/m_DLF]
       - [0x679550, c, code/m_all_grow]
       - [0x67A020, c, code/m_actor]
       - [0x67C6B0, c, code/m_actor_dlftbls]