3 * - By John Hodge (thePowersGang)
6 * - ARM7 Process Switching
9 #include <threads_int.h>
13 extern tThread gThreadZero;
14 extern void SwitchTask(Uint32 NewSP, Uint32 *OldSP, Uint32 NewIP, Uint32 *OldIP, Uint32 MemPtr);
15 extern void KernelThreadHeader(void); // Actually takes args
16 extern tVAddr MM_NewKStack(int bGlobal); // TODO: Move out into a header
19 void Proc_IdleThread(void *unused);
20 tTID Proc_NewKThread( void (*Fnc)(void*), void *Ptr );
23 tThread *gpCurrentThread = &gThreadZero;
24 tThread *gpIdleThread = NULL;
27 void ArchThreads_Init(void)
31 void Proc_IdleThread(void *unused)
41 tid = Proc_NewKThread( Proc_IdleThread, NULL );
42 gpIdleThread = Threads_GetThread(tid);
50 tThread *Proc_GetCurThread(void)
52 return gpCurrentThread;
55 tTID Proc_Clone(Uint Flags)
60 void Proc_StartUser(Uint Entrypoint, Uint *Bases, int ArgC, char **ArgV, char **EnvP, int DataSize)
64 tTID Proc_SpawnWorker( void (*Fnc)(void*), void *Ptr )
69 tTID Proc_NewKThread( void (*Fnc)(void*), void *Ptr )
74 new = Threads_CloneTCB(NULL, 0);
77 new->KernelStack = MM_NewKStack(0);
78 if(!new->KernelStack) {
79 // TODO: Delete thread
83 sp = new->KernelStack;
85 *(Uint32*)(sp -= 4) = (Uint)new;
86 *(Uint32*)(sp -= 4) = (Uint)Fnc;
87 *(Uint32*)(sp -= 4) = 1;
88 *(Uint32*)(sp -= 4) = (Uint)Ptr;
90 new->SavedState.SP = sp;
91 new->SavedState.IP = (Uint)KernelThreadHeader;
93 Threads_AddActive(new);
98 void Proc_CallFaultHandler(tThread *Thread)
103 void Proc_Reschedule(void)
107 cur = gpCurrentThread;
109 next = Threads_GetNextToRun(0, cur);
110 if(!next) next = gpIdleThread;
111 if(!next || next == cur) return;
114 next->SavedState.SP, &cur->SavedState.SP,
115 next->SavedState.IP, &cur->SavedState.IP,
121 void Proc_DumpThreadCPUState(tThread *Thread)