Decompile a bunch of small files (#160)

* Decompile a bunch of small files

* Rename dacrate to dacRate

* Run format.sh

* Minor fixes in PR #160

18 files changed, 337 insertions, 12 deletions

diff --git a/src/code/mtxuty-cvt.c b/src/code/mtxuty-cvt.c
new file mode 100644
index 000000000..0f1f6a7ff
--- /dev/null
+++ b/src/code/mtxuty-cvt.c
@@ -0,0 +1,23 @@
+#include <global.h>
+
+void MtxConv_F2L(MatrixInternal* m1, MtxF* m2) {
+    s32 i;
+    s32 j;
+
+    LogUtils_CheckNullPointer("m1", m1, "../mtxuty-cvt.c", 31);
+    LogUtils_CheckNullPointer("m2", m2, "../mtxuty-cvt.c", 32);
+
+    for (i = 0; i < 4; i++) {
+        for (j = 0; j < 4; j++) {
+            s32 value = (m2->mf[i][j] * 0x10000);
+            m1->intPart[i][j] = value >> 16;
+            m1->fracPart[i][j] = value;
+        }
+    }
+}
+
+void MtxConv_L2F(MtxF* m1, Mtx* m2) {
+    LogUtils_CheckNullPointer("m1", m1, "../mtxuty-cvt.c", 55);
+    LogUtils_CheckNullPointer("m2", m2, "../mtxuty-cvt.c", 56);
+    func_80102FA0(m1, m2); // guMtxL2F ?
+}
diff --git a/src/code/padmgr.c b/src/code/padmgr.c
index 745c058e4..b81116e6a 100644
--- a/src/code/padmgr.c
+++ b/src/code/padmgr.c
@@ -272,7 +272,7 @@ void PadMgr_ProcessInputs(PadMgr* padmgr) {
         }
         input->press.in.button = input->cur.in.button & (input->prev.in.button ^ input->cur.in.button);
         input->rel.in.button = input->prev.in.button & (input->prev.in.button ^ input->cur.in.button);
-        func_800FCC6C(input);
+        PadUtils_UpdateRelXY(input);
         input->press.in.x = (input->cur.in.x - input->prev.in.x) + input->press.in.x;
         input->press.in.y = (input->cur.in.y - input->prev.in.y) + input->press.in.y;
     }
@@ -360,7 +360,7 @@ void PadMgr_RequestPadData(PadMgr* padmgr, Input* inputs, s32 mode) {
             newin->cur = pmInputs->cur;
             newin->press.in.button = newin->cur.in.button & (newin->prev.in.button ^ newin->cur.in.button);
             newin->rel.in.button = newin->prev.in.button & (newin->prev.in.button ^ newin->cur.in.button);
-            func_800FCC6C(newin);
+            PadUtils_UpdateRelXY(newin);
             newin->press.in.x = (newin->cur.in.x - newin->prev.in.x) + newin->press.in.x;
             newin->press.in.y = (newin->cur.in.y - newin->prev.in.y) + newin->press.in.y;
         }
diff --git a/src/code/padutils.c b/src/code/padutils.c
new file mode 100644
index 000000000..b19fdbf12
--- /dev/null
+++ b/src/code/padutils.c
@@ -0,0 +1,93 @@
+#include <global.h>
+
+void PadUtils_Init(Input* input) {
+    bzero(input, sizeof(Input));
+}
+
+void func_800FCB70() {
+}
+
+void PadUtils_ResetPressRel(Input* input) {
+    input->press.in.button = 0;
+    input->rel.in.button = 0;
+}
+
+u32 PadUtils_CheckCurExact(Input* input, u16 value) {
+    return value == input->cur.in.button;
+}
+
+u32 PadUtils_CheckCur(Input* input, u16 key) {
+    return key == (input->cur.in.button & key);
+}
+
+u32 PadUtils_CheckPressed(Input* input, u16 key) {
+    return key == (input->press.in.button & key);
+}
+
+u32 PadUtils_CheckReleased(Input* input, u16 key) {
+    return key == (input->rel.in.button & key);
+}
+
+u16 PadUtils_GetCurButton(Input* input) {
+    return input->cur.in.button;
+}
+
+u16 PadUtils_GetPressButton(Input* input) {
+    return input->press.in.button;
+}
+
+s8 PadUtils_GetCurX(Input* input) {
+    return input->cur.in.x;
+}
+
+s8 PadUtils_GetCurY(Input* input) {
+    return input->cur.in.y;
+}
+
+void PadUtils_SetRelXY(Input* input, s32 x, s32 y) {
+    input->rel.in.x = x;
+    input->rel.in.y = y;
+}
+
+s8 PadUtils_GetRelXImpl(Input* input) {
+    return input->rel.in.x;
+}
+
+s8 PadUtils_GetRelYImpl(Input* input) {
+    return input->rel.in.y;
+}
+
+s8 PadUtils_GetRelX(Input* input) {
+    return PadUtils_GetRelXImpl(input);
+}
+
+s8 PadUtils_GetRelY(Input* input) {
+    return PadUtils_GetRelYImpl(input);
+}
+
+void PadUtils_UpdateRelXY(Input* input) {
+    s32 curX, curY;
+    s32 relX, relY;
+
+    curX = PadUtils_GetCurX(input);
+    curY = PadUtils_GetCurY(input);
+
+    if (curX > 7) {
+        relX = (curX < 0x43) ? curX - 7 : 0x43 - 7;
+    } else if (curX < -7) {
+        relX = (curX > -0x43) ? curX + 7 : -0x43 + 7;
+    } else {
+        relX = 0;
+    }
+
+    if (curY > 7) {
+        relY = (curY < 0x43) ? curY - 7 : 0x43 - 7;
+
+    } else if (curY < -7) {
+        relY = (curY > -0x43) ? curY + 7 : -0x43 + 7;
+    } else {
+        relY = 0;
+    }
+
+    PadUtils_SetRelXY(input, relX, relY);
+}
diff --git a/src/code/sys_matrix.c b/src/code/sys_matrix.c
index f0b3e4005..487e1a841 100644
--- a/src/code/sys_matrix.c
+++ b/src/code/sys_matrix.c
@@ -935,7 +935,7 @@ void func_800D2A98(Mtx* mtx, f32 arg1, f32 arg2, f32 arg3, f32 arg4) {
     MtxF mf;
 
     func_800D2A34(&mf, arg1, arg2, arg3, arg4);
-    func_801064E0(&mf, mtx);
+    guMtxF2L(&mf, mtx);
 }
 
 void func_800D2AE4(Mtx* mtx, f32 arg1, f32 arg2, f32 arg3, f32 arg4) {
diff --git a/src/code/z_room.c b/src/code/z_room.c
index 233cbdc39..90ca8ce64 100644
--- a/src/code/z_room.c
+++ b/src/code/z_room.c
@@ -299,7 +299,7 @@ void func_8009638C(Gfx** displayList, u32 source, u32 tlut, u16 width, u16 heigh
     if ((fmt == G_IM_FMT_RGBA) && (SREG(26) == 0)) {
         bg->b.frameW = width * 4;
         bg->b.frameH = height * 4;
-        func_80104B00(bg);
+        guS2DInitBg(bg);
         gDPSetOtherMode(displayListHead++, mode0 | G_TL_TILE | G_TD_CLAMP | G_TP_NONE | G_CYC_COPY | G_PM_NPRIMITIVE,
                         G_AC_THRESHOLD | G_ZS_PIXEL | G_RM_NOOP | G_RM_NOOP2);
         gSPBgRectCopy(displayListHead++, bg);
diff --git a/src/libultra_boot_O1/initialize.c b/src/libultra_boot_O1/initialize.c
index 3683ad3b8..29d484661 100644
--- a/src/libultra_boot_O1/initialize.c
+++ b/src/libultra_boot_O1/initialize.c
@@ -9,7 +9,7 @@ typedef struct {
 } struct_exceptionPreamble;
 
 u64 osClockRate = OS_CLOCK_RATE;
-u32 osViClock = VI_NTSC_CLOCK;
+s32 osViClock = VI_NTSC_CLOCK;
 u32 __osShutdown = 0;
 u32 __OSGlobalIntMask = 0x003FFF01;
 
diff --git a/src/libultra_code/absf.c b/src/libultra_code/absf.c
new file mode 100644
index 000000000..d78355af5
--- /dev/null
+++ b/src/libultra_code/absf.c
@@ -0,0 +1,5 @@
+#include <global.h>
+
+f32 absf(f32 a) {
+    return fabsf(a);
+}
diff --git a/src/libultra_code/guS2DInitBg.c b/src/libultra_code/guS2DInitBg.c
new file mode 100644
index 000000000..32c46f169
--- /dev/null
+++ b/src/libultra_code/guS2DInitBg.c
@@ -0,0 +1,28 @@
+#include <global.h>
+
+void guS2DInitBg(uObjBg* bg) {
+    u16 shift;
+    u32 size;
+    s32 tmem;
+
+    tmem = (bg->b.imageFmt == G_IM_FMT_CI) ? 0x100 : 0x200;
+
+    shift = (6 - bg->b.imageSiz);
+    if (bg->b.imageLoad == G_BGLT_LOADBLOCK) {
+        bg->b.tmemW = bg->b.imageW >> shift;
+        bg->b.tmemH = (tmem / bg->b.tmemW) * 4;
+        bg->b.tmemSizeW = bg->b.tmemW * 2;
+        bg->b.tmemSize = bg->b.tmemH * bg->b.tmemSizeW;
+        bg->b.tmemLoadSH = (bg->b.tmemSize >> 1) - 1;
+        bg->b.tmemLoadTH = (0x7FF / bg->b.tmemW) + 1;
+    } else { // G_BGLT_LOADTILE
+        bg->b.tmemW = (bg->b.frameW >> shift) + 3;
+        bg->b.tmemH = (tmem / bg->b.tmemW) * 4;
+        bg->b.tmemSizeW = (bg->b.imageW >> shift) * 2;
+
+        size = bg->b.tmemH * bg->b.tmemSizeW;
+        bg->b.tmemSize = (size >> 16);
+        bg->b.tmemLoadSH = (size >> 0) & 0xFFFF;
+        bg->b.tmemLoadTH = bg->b.tmemH - 1;
+    }
+}
diff --git a/src/libultra_code/libultra_internal.h b/src/libultra_code/libultra_internal.h
index fe9b29abb..6a6e7caac 100644
--- a/src/libultra_code/libultra_internal.h
+++ b/src/libultra_code/libultra_internal.h
@@ -4,8 +4,6 @@
 
 // TODO: rename these
 //      SM64                OOT
-#define guMtxF2L            func_801064E0 // believed to be correct name, needs confirmation.
-
 s32 __osDisableInt();
 void __osRestoreInt(s32);
 void __osEnqueueAndYield(OSThread**);
diff --git a/src/libultra_code/osAiSetFrequency.c b/src/libultra_code/osAiSetFrequency.c
new file mode 100644
index 000000000..f16d8cec3
--- /dev/null
+++ b/src/libultra_code/osAiSetFrequency.c
@@ -0,0 +1,24 @@
+#include <global.h>
+#include <ultra64/hardware.h>
+
+s32 osAiSetFrequency(u32 frequency) {
+    u32 dacRate;
+    u8 bitrate;
+    f32 dacRateF;
+
+    dacRateF = ((f32)osViClock / frequency) + 0.5f;
+    dacRate = dacRateF;
+
+    if (dacRate < 132) {
+        return -1;
+    }
+
+    bitrate = (dacRate / 66);
+    if (bitrate > 16) {
+        bitrate = 16;
+    }
+
+    HW_REG(AI_DACRATE_REG, u32) = dacRate - 1;
+    HW_REG(AI_BITRATE_REG, u32) = bitrate - 1;
+    return osViClock / (s32)dacRate;
+}
diff --git a/src/libultra_code/osSetTimer.c b/src/libultra_code/osSetTimer.c
new file mode 100644
index 000000000..fd78ba184
--- /dev/null
+++ b/src/libultra_code/osSetTimer.c
@@ -0,0 +1,42 @@
+#include <global.h>
+
+s32 osSetTimer(OSTimer* timer, OSTime countdown, OSTime interval, OSMesgQueue* mq, OSMesg msg) {
+    OSTime time;
+    OSTimer* next;
+    u32 count;
+    u32 value;
+    s32 prevInt;
+
+    timer->next = NULL;
+    timer->prev = NULL;
+    timer->interval = interval;
+    if (countdown != 0) {
+        timer->value = countdown;
+    } else {
+        timer->value = interval;
+    }
+    timer->mq = mq;
+    timer->msg = msg;
+
+    prevInt = __osDisableInt();
+    if (__osTimerList->next != __osTimerList) {
+
+        if (1) {}
+        next = __osTimerList->next;
+        count = osGetCount();
+        value = count - __osTimerCounter;
+
+        if (value < next->value) {
+            next->value -= value;
+        } else {
+            next->value = 1;
+        }
+    }
+
+    time = __osInsertTimer(timer);
+    __osSetTimerIntr(__osTimerList->next->value);
+
+    __osRestoreInt(prevInt);
+
+    return 0;
+}
diff --git a/src/libultra_code/osSpTaskYield.c b/src/libultra_code/osSpTaskYield.c
new file mode 100644
index 000000000..ec98ec332
--- /dev/null
+++ b/src/libultra_code/osSpTaskYield.c
@@ -0,0 +1,5 @@
+#include <global.h>
+
+void osSpTaskYield() {
+    __osSpSetStatus(SP_STATUS_SIG3);
+}
diff --git a/src/libultra_code/osSpTaskYielded.c b/src/libultra_code/osSpTaskYielded.c
new file mode 100644
index 000000000..ed151a615
--- /dev/null
+++ b/src/libultra_code/osSpTaskYielded.c
@@ -0,0 +1,21 @@
+#include <global.h>
+
+u32 osSpTaskYielded(OSTask* task) {
+    u32 ret;
+    u32 status;
+
+    status = __osSpGetStatus();
+
+    if (status & SP_STATUS_YIELDED) {
+        ret = OS_TASK_YIELDED;
+    } else {
+        ret = 0;
+    }
+
+    if (status & SP_STATUS_YIELD) {
+        task->t.flags |= ret;
+        task->t.flags &= ~OS_TASK_DP_WAIT;
+    }
+
+    return ret;
+}
diff --git a/src/libultra_code/osStopTimer.c b/src/libultra_code/osStopTimer.c
new file mode 100644
index 000000000..6e8a94fc8
--- /dev/null
+++ b/src/libultra_code/osStopTimer.c
@@ -0,0 +1,28 @@
+#include <global.h>
+
+s32 osStopTimer(OSTimer* timer) {
+    register s32 prevInt;
+    OSTimer* next;
+
+    if (!timer->next) {
+        return -1;
+    }
+
+    prevInt = __osDisableInt();
+
+    next = timer->next;
+    if (next != __osTimerList) {
+        next->value += timer->value;
+    }
+
+    timer->prev->next = timer->next;
+    timer->next->prev = timer->prev;
+    timer->next = NULL;
+    timer->prev = NULL;
+    if (__osTimerList->next == __osTimerList) {
+        __osSetCompare(0);
+    }
+
+    __osRestoreInt(prevInt);
+    return 0;
+}
diff --git a/src/libultra_code/rotate.c b/src/libultra_code/rotate.c
new file mode 100644
index 000000000..79752bfa6
--- /dev/null
+++ b/src/libultra_code/rotate.c
@@ -0,0 +1,50 @@
+#include <global.h>
+
+void guRotateF(f32 m[4][4], f32 a, f32 x, f32 y, f32 z) {
+    static f32 D_80134D10 = M_PI / 180.0f;
+    f32 sine;
+    f32 cosine;
+    f32 ab;
+    f32 bc;
+    f32 ca;
+    f32 t;
+    f32 xs;
+    f32 ys;
+    f32 zs;
+
+    guNormalize(&x, &y, &z);
+
+    a = a * D_80134D10;
+
+    sine = sinf(a);
+    cosine = cosf(a);
+
+    ab = x * y * (1 - cosine);
+    bc = y * z * (1 - cosine);
+    ca = z * x * (1 - cosine);
+
+    guMtxIdentF(m);
+
+    xs = x * sine;
+    ys = y * sine;
+    zs = z * sine;
+
+    t = x * x;
+    m[0][0] = (1 - t) * cosine + t;
+    m[2][1] = bc - xs;
+    m[1][2] = bc + xs;
+    t = y * y;
+    m[1][1] = (1 - t) * cosine + t;
+    m[2][0] = ca + ys;
+    m[0][2] = ca - ys;
+    t = z * z;
+    m[2][2] = (1 - t) * cosine + t;
+    m[1][0] = ab - zs;
+    m[0][1] = ab + zs;
+}
+
+void guRotate(Mtx* m, f32 a, f32 x, f32 y, f32 z) {
+    f32 mf[4][4];
+    guRotateF(mf, a, x, y, z);
+    guMtxF2L(mf, m);
+}
diff --git a/src/libultra_code/sqrt.c b/src/libultra_code/sqrt.c
new file mode 100644
index 000000000..98b338362
--- /dev/null
+++ b/src/libultra_code/sqrt.c
@@ -0,0 +1,10 @@
+#include <global.h>
+
+#ifndef __GNUC__
+#pragma intrinsic(sqrt)
+#define __builtin_sqrt sqrt
+#endif
+
+f64 sqrt(f64 f) {
+    return __builtin_sqrt(f);
+}
diff --git a/src/libultra_code/sqrtf.c b/src/libultra_code/sqrtf.c
index c582b7f6d..59ab57ce8 100644
--- a/src/libultra_code/sqrtf.c
+++ b/src/libultra_code/sqrtf.c
@@ -1,12 +1,10 @@
-#include <math.h>
-
-float sqrtf(float f);
+#include <global.h>
 
 #ifndef __GNUC__
 #pragma intrinsic(sqrtf)
 #define __builtin_sqrtf sqrtf
 #endif
 
-float sqrtf(float f) {
+f32 sqrtf(f32 f) {
     return __builtin_sqrtf(f);
 }
diff --git a/src/overlays/actors/ovl_En_Hintnuts/z_en_hintnuts.c b/src/overlays/actors/ovl_En_Hintnuts/z_en_hintnuts.c
index 20a90a02a..aeaa0eb99 100644
--- a/src/overlays/actors/ovl_En_Hintnuts/z_en_hintnuts.c
+++ b/src/overlays/actors/ovl_En_Hintnuts/z_en_hintnuts.c
@@ -234,7 +234,7 @@ void EnHintnuts_Wait(EnHintnuts* this, GlobalContext* globalCtx) {
     if (func_800A56C8(&this->skelAnime, 9.0f) != 0) {
         this->collider.base.acFlags |= 1;
     } else if (func_800A56C8(&this->skelAnime, 8.0f) != 0) {
-            Audio_PlayActorSound2(&this->actor, NA_SE_EN_NUTS_UP);
+        Audio_PlayActorSound2(&this->actor, NA_SE_EN_NUTS_UP);
     }
     if (this->skelAnime.animCurrentFrame < 9.0f) {
         boundedCurrentFrame = 9.0f;