diff --git a/include/functions.h b/include/functions.h
index a0156d314d1..79083ff4451 100644
--- a/include/functions.h
+++ b/include/functions.h
@@ -1272,42 +1272,7 @@ void* SysCfb_GetFbEnd(void);
 
 void Math3D_DrawSphere(PlayState* play, Sphere16* sph);
 void Math3D_DrawCylinder(PlayState* play, Cylinder16* cyl);
-void Matrix_Init(GameState* gameState);
-void Matrix_Push(void);
-void Matrix_Pop(void);
-void Matrix_Get(MtxF* dest);
-void Matrix_Put(MtxF* src);
-void Matrix_Mult(MtxF* mf, u8 mode);
-void Matrix_Translate(f32 x, f32 y, f32 z, u8 mode);
-void Matrix_Scale(f32 x, f32 y, f32 z, u8 mode);
-void Matrix_RotateX(f32 x, u8 mode);
-void Matrix_RotateY(f32 y, u8 mode);
-void Matrix_RotateZ(f32 z, u8 mode);
-void Matrix_RotateZYX(s16 x, s16 y, s16 z, u8 mode);
-void Matrix_TranslateRotateZYX(Vec3f* translation, Vec3s* rotation);
-void Matrix_SetTranslateRotateYXZ(f32 translateX, f32 translateY, f32 translateZ, Vec3s* rot);
-Mtx* Matrix_MtxFToMtx(MtxF* src, Mtx* dest);
-#if OOT_DEBUG
-Mtx* Matrix_ToMtx(Mtx* dest, const char* file, int line);
-Mtx* Matrix_NewMtx(GraphicsContext* gfxCtx, const char* file, int line);
-#else
-Mtx* Matrix_ToMtx(Mtx* dest);
-Mtx* Matrix_NewMtx(GraphicsContext* gfxCtx);
-#endif
-void Matrix_MultVec3f(Vec3f* src, Vec3f* dest);
-void Matrix_MtxFCopy(MtxF* dest, MtxF* src);
-void Matrix_MtxToMtxF(Mtx* src, MtxF* dest);
-void Matrix_MultVec3fExt(Vec3f* src, Vec3f* dest, MtxF* mf);
-void Matrix_Transpose(MtxF* mf);
-void Matrix_ReplaceRotation(MtxF* mf);
-void Matrix_MtxFToYXZRotS(MtxF* mf, Vec3s* rotDest, s32 flag);
-void Matrix_MtxFToZYXRotS(MtxF* mf, Vec3s* rotDest, s32 flag);
-void Matrix_RotateAxis(f32 angle, Vec3f* axis, u8 mode);
-#if OOT_DEBUG
-MtxF* Matrix_CheckFloats(MtxF* mf, const char* file, int line);
-#endif
-void Matrix_SetTranslateScaleMtx2(Mtx* mtx, f32 scaleX, f32 scaleY, f32 scaleZ, f32 translateX, f32 translateY,
-                                  f32 translateZ);
+
 u64* SysUcode_GetUCodeBoot(void);
 size_t SysUcode_GetUCodeBootSize(void);
 u64* SysUcode_GetUCode(void);
diff --git a/include/macros.h b/include/macros.h
index 50f8330282d..dab193146d2 100644
--- a/include/macros.h
+++ b/include/macros.h
@@ -189,9 +189,6 @@ extern struct GraphicsContext* __gfxCtx;
     (void)0
 
 #define GRAPH_ALLOC(gfxCtx, size) Graph_Alloc(gfxCtx, size)
-#define MATRIX_TO_MTX(gfxCtx, file, line) Matrix_ToMtx(gfxCtx, file, line)
-#define MATRIX_NEW(gfxCtx, file, line) Matrix_NewMtx(gfxCtx, file, line)
-#define MATRIX_CHECK_FLOATS(mtx, file, line) Matrix_CheckFloats(mtx, file, line)
 #define DMA_REQUEST_SYNC(ram, vrom, size, file, line) DmaMgr_RequestSyncDebug(ram, vrom, size, file, line)
 #define DMA_REQUEST_ASYNC(req, ram, vrom, size, unk5, queue, msg, file, line) DmaMgr_RequestAsyncDebug(req, ram, vrom, size, unk5, queue, msg, file, line)
 #define GAME_STATE_ALLOC(gameState, size, file, line) GameState_Alloc(gameState, size, file, line)
@@ -221,9 +218,6 @@ extern struct GraphicsContext* __gfxCtx;
     (void)0
 
 #define GRAPH_ALLOC(gfxCtx, size) ((void*)((gfxCtx)->polyOpa.d = (Gfx*)((u8*)(gfxCtx)->polyOpa.d - ALIGN16(size))))
-#define MATRIX_TO_MTX(gfxCtx, file, line) Matrix_ToMtx(gfxCtx)
-#define MATRIX_NEW(gfxCtx, file, line) Matrix_NewMtx(gfxCtx)
-#define MATRIX_CHECK_FLOATS(mtx, file, line) (mtx)
 #define DMA_REQUEST_SYNC(ram, vrom, size, file, line) DmaMgr_RequestSync(ram, vrom, size)
 #define DMA_REQUEST_ASYNC(req, ram, vrom, size, unk5, queue, msg, file, line) DmaMgr_RequestAsync(req, ram, vrom, size, unk5, queue, msg)
 #define GAME_STATE_ALLOC(gameState, size, file, line) THA_AllocTailAlign16(&(gameState)->tha, size)
diff --git a/include/sys_matrix.h b/include/sys_matrix.h
new file mode 100644
index 00000000000..91a2285d775
--- /dev/null
+++ b/include/sys_matrix.h
@@ -0,0 +1,85 @@
+#ifndef SYS_MATRIX_H
+#define SYS_MATRIX_H
+
+#include "z64math.h"
+
+struct GraphicsContext;
+struct GameState;
+
+typedef enum MatrixMode {
+    /* 0 */ MTXMODE_NEW,  // generates a new matrix
+    /* 1 */ MTXMODE_APPLY // applies transformation to the current matrix
+} MatrixMode;
+
+extern Mtx gMtxClear;
+extern MtxF gMtxFClear;
+
+/* Stack operations */
+
+void Matrix_Init(struct GameState* gameState);
+void Matrix_Push(void);
+void Matrix_Pop(void);
+void Matrix_Get(MtxF* dest);
+void Matrix_Put(MtxF* src);
+
+/* Basic operations */
+
+void Matrix_Mult(MtxF* mf, u8 mode);
+void Matrix_Translate(f32 x, f32 y, f32 z, u8 mode);
+void Matrix_Scale(f32 x, f32 y, f32 z, u8 mode);
+void Matrix_RotateX(f32 x, u8 mode);
+void Matrix_RotateY(f32 y, u8 mode);
+void Matrix_RotateZ(f32 z, u8 mode);
+
+/* Compound operations */
+
+void Matrix_RotateZYX(s16 x, s16 y, s16 z, u8 mode);
+void Matrix_TranslateRotateZYX(Vec3f* translation, Vec3s* rotation);
+void Matrix_SetTranslateRotateYXZ(f32 translateX, f32 translateY, f32 translateZ, Vec3s* rot);
+void Matrix_SetTranslateScaleMtx2(Mtx* mtx, f32 scaleX, f32 scaleY, f32 scaleZ, f32 translateX, f32 translateY,
+                                  f32 translateZ);
+
+/* Conversion and allocation operations */
+
+Mtx* Matrix_MtxFToMtx(MtxF* src, Mtx* dest);
+
+#if OOT_DEBUG
+
+Mtx* Matrix_ToMtx(Mtx* dest, const char* file, int line);
+Mtx* Matrix_NewMtx(struct GraphicsContext* gfxCtx, const char* file, int line);
+MtxF* Matrix_CheckFloats(MtxF* mf, const char* file, int line);
+
+#define MATRIX_TO_MTX(gfxCtx, file, line) Matrix_ToMtx(gfxCtx, file, line)
+#define MATRIX_NEW(gfxCtx, file, line) Matrix_NewMtx(gfxCtx, file, line)
+#define MATRIX_CHECK_FLOATS(mtx, file, line) Matrix_CheckFloats(mtx, file, line)
+
+#else
+
+Mtx* Matrix_ToMtx(Mtx* dest);
+Mtx* Matrix_NewMtx(struct GraphicsContext* gfxCtx);
+
+#define MATRIX_TO_MTX(gfxCtx, file, line) Matrix_ToMtx(gfxCtx)
+#define MATRIX_NEW(gfxCtx, file, line) Matrix_NewMtx(gfxCtx)
+#define MATRIX_CHECK_FLOATS(mtx, file, line) (mtx)
+
+#endif
+
+/* Vector operations */
+
+void Matrix_MultVec3f(Vec3f* src, Vec3f* dest);
+void Matrix_MultVec3fExt(Vec3f* src, Vec3f* dest, MtxF* mf);
+
+/* Copy and another conversion */
+
+void Matrix_MtxFCopy(MtxF* dest, MtxF* src);
+void Matrix_MtxToMtxF(Mtx* src, MtxF* dest);
+
+/* Miscellaneous */
+
+void Matrix_Transpose(MtxF* mf);
+void Matrix_ReplaceRotation(MtxF* mf);
+void Matrix_MtxFToYXZRotS(MtxF* mf, Vec3s* rotDest, s32 flag);
+void Matrix_MtxFToZYXRotS(MtxF* mf, Vec3s* rotDest, s32 flag);
+void Matrix_RotateAxis(f32 angle, Vec3f* axis, u8 mode);
+
+#endif
diff --git a/include/variables.h b/include/variables.h
index f7fc97a2305..bf4fb15c52e 100644
--- a/include/variables.h
+++ b/include/variables.h
@@ -104,8 +104,6 @@ extern u8 gBossMarkState;
 
 extern s32 gScreenWidth;
 extern s32 gScreenHeight;
-extern Mtx gMtxClear;
-extern MtxF gMtxFClear;
 #if OOT_DEBUG
 extern u32 gIsCtrlr2Valid;
 #endif
diff --git a/include/z64.h b/include/z64.h
index 0ee9f4f0808..7a6187a485b 100644
--- a/include/z64.h
+++ b/include/z64.h
@@ -66,6 +66,7 @@
 #include "sys_math.h"
 #include "sys_math3d.h"
 #include "fp_math.h"
+#include "sys_matrix.h"
 
 #define SCREEN_WIDTH  320
 #define SCREEN_HEIGHT 240
@@ -390,11 +391,6 @@ typedef struct DebugDispObject {
     /* 0x28 */ struct DebugDispObject* next;
 } DebugDispObject; // size = 0x2C
 
-typedef enum MatrixMode {
-    /* 0 */ MTXMODE_NEW,  // generates a new matrix
-    /* 1 */ MTXMODE_APPLY // applies transformation to the current matrix
-} MatrixMode;
-
 typedef struct StackEntry {
     /* 0x00 */ struct StackEntry* next;
     /* 0x04 */ struct StackEntry* prev;
diff --git a/src/overlays/actors/ovl_Fishing/z_fishing.c b/src/overlays/actors/ovl_Fishing/z_fishing.c
index 34237596e5d..1a2e28f3efb 100644
--- a/src/overlays/actors/ovl_Fishing/z_fishing.c
+++ b/src/overlays/actors/ovl_Fishing/z_fishing.c
@@ -14,7 +14,7 @@
 #include "cic6105.h"
 #endif
 
-#pragma increment_block_number "gc-eu:154 gc-eu-mq:154 gc-jp:156 gc-jp-ce:156 gc-jp-mq:156 gc-us:156 gc-us-mq:156"
+#pragma increment_block_number "gc-eu:153 gc-eu-mq:153 gc-jp:155 gc-jp-ce:155 gc-jp-mq:155 gc-us:155 gc-us-mq:155"
 
 #define FLAGS ACTOR_FLAG_4