sm64

A Super Mario 64 decompilation
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osCreatePiManager.c (2063B)

      1 #include "libultra_internal.h"
      2 #include "PR/os.h"
      3 #include "piint.h"
      4 
      5 #include "macros.h"
      6 
      7 #define OS_PI_MGR_MESG_BUFF_SIZE 1
      8 
      9 OSDevMgr __osPiDevMgr = { 0 };
     10 
     11 #if defined(VERSION_EU) || defined(VERSION_SH) || defined(VERSION_CN)
     12 OSPiHandle *__osPiTable = NULL;
     13 #endif
     14 
     15 #if defined(VERSION_SH) || defined(VERSION_CN)
     16 OSPiHandle *__osCurrentHandle[2] = { &__Dom1SpeedParam, &__Dom2SpeedParam };
     17 #endif
     18 
     19 FORCE_BSS OSThread piMgrThread;
     20 FORCE_BSS u32 piMgrStack[0x400]; // stack bottom
     21 FORCE_BSS OSMesgQueue piEventQueue;
     22 FORCE_BSS OSMesg piEventBuf[OS_PI_MGR_MESG_BUFF_SIZE + 1];
     23 
     24 extern u32 gOsPiAccessQueueCreated;
     25 extern OSMesgQueue gOsPiMessageQueue;
     26 void __osDevMgrMain(void *);
     27 
     28 void osCreatePiManager(OSPri pri, OSMesgQueue *cmdQ, OSMesg *cmdBuf, s32 cmdMsgCnt) {
     29     u32 int_disabled;
     30     OSPri newPri;
     31     OSPri currentPri;
     32 
     33     if (!__osPiDevMgr.active) {
     34         osCreateMesgQueue(cmdQ, cmdBuf, cmdMsgCnt);
     35         osCreateMesgQueue(&piEventQueue, &piEventBuf[0], OS_PI_MGR_MESG_BUFF_SIZE);
     36         if (!gOsPiAccessQueueCreated) {
     37             __osPiCreateAccessQueue();
     38         } // what is this constant geez
     39         osSetEventMesg(OS_EVENT_PI, &piEventQueue, (void *) 0x22222222);
     40         newPri = -1;
     41         currentPri = osGetThreadPri(NULL);
     42         if (currentPri < pri) {
     43             newPri = currentPri;
     44             osSetThreadPri(NULL, pri);
     45         }
     46         int_disabled = __osDisableInt();
     47         __osPiDevMgr.active = TRUE;
     48         __osPiDevMgr.thread = &piMgrThread;
     49         __osPiDevMgr.cmdQueue = cmdQ;
     50         __osPiDevMgr.evtQueue = &piEventQueue;
     51         __osPiDevMgr.acsQueue = &gOsPiMessageQueue;
     52         __osPiDevMgr.dma = osPiRawStartDma;
     53 #if defined(VERSION_EU) || defined(VERSION_SH) || defined(VERSION_CN)
     54         __osPiDevMgr.edma = osEPiRawStartDma;
     55 #endif
     56         osCreateThread(&piMgrThread, 0, __osDevMgrMain, (void *) &__osPiDevMgr, &piMgrStack[0x400], pri);
     57         osStartThread(&piMgrThread);
     58         __osRestoreInt(int_disabled);
     59         if (newPri != -1) {
     60             osSetThreadPri(NULL, newPri);
     61         }
     62     }
     63 }