Decompile osPiStartDma

src/libultra/io/pidma.c

@@ -1,3 +1,42 @@
-#include "common.h"
+#include "global.h"
 
-#pragma GLOBAL_ASM("asm/us/nonmatchings/libultra/io/pidma/osPiStartDma.s")
+typedef struct {
+    s16 unk0;
+    s8 unk2;
+    s8 pad;
+    s32 unk4;
+    s32 unk8;
+    s32 unkC;
+    s32 unk10;
+    s32 unk14;
+} test;
+
+extern s32 __osPiDevMgr;
+
+s32 osPiStartDma(test* arg0, s32 arg1, s32 arg2, s32 arg3, s32 arg4, s32 arg5, s32 arg6) {
+    register s32 result;
+
+    if (__osPiDevMgr == 0) {
+        return -1;
+    }
+    
+    if (arg2 == 0) {
+        arg0->unk0 = 0xB;
+    } else {
+        arg0->unk0 = 0xC;
+    }
+    
+    arg0->unk2 = (s8) arg1;
+    arg0->unk4 = arg6;
+    arg0->unk8 = arg4;
+    arg0->unkC = arg3;
+    arg0->unk10 = arg5;
+    arg0->unk14 = 0;
+    
+    if (arg1 == 1) {
+        result = osJamMesg(osPiGetCmdQueue(), arg0, 0);
+    } else {
+        result = osSendMesg(osPiGetCmdQueue(), arg0, 0);
+    }
+    return result;
+}