X-Git-Url: https://git.ucc.asn.au/?a=blobdiff_plain;f=Kernel%2Farch%2Farmv7%2Fproc.c;h=c3cb226cfba0c73c092dc280651946235308df43;hb=2905fecbe9bf464d09d5f2a29cdc8655d7cc0b45;hp=08257d99c1d909d11b2cf85153c591701b7e04d7;hpb=95a9132bcc024715a0a87cb323d58967ea5b1803;p=tpg%2Facess2.git

diff --git a/Kernel/arch/armv7/proc.c b/Kernel/arch/armv7/proc.c
index 08257d99..c3cb226c 100644
--- a/Kernel/arch/armv7/proc.c
+++ b/Kernel/arch/armv7/proc.c
@@ -13,7 +13,8 @@
 extern tThread	gThreadZero;
 extern void	SwitchTask(Uint32 NewSP, Uint32 *OldSP, Uint32 NewIP, Uint32 *OldIP, Uint32 MemPtr);
 extern void	KernelThreadHeader(void);	// Actually takes args on stack
-extern void	Proc_int_DropToUser(Uint32 IP, Uint32 SP) NORETURN;
+extern void	Proc_int_DropToUser(Uint32 IP, Uint32 SP) NORETURN __attribute__((long_call));
+extern Uint32	Proc_int_SwapUserSP(Uint32 NewSP);
 extern Uint32	Proc_CloneInt(Uint32 *SP, Uint32 *MemPtr);
 extern tVAddr	MM_NewKStack(int bGlobal);	// TODO: Move out into a header
 extern tVAddr	MM_NewUserStack(void);
@@ -67,8 +68,8 @@ void Proc_StartUser(Uint Entrypoint, Uint Base, int ArgC, char **ArgV, int DataS
 	char	**envp;
 	tVAddr	delta;
 
-	Log_Debug("Proc", "Proc_StartUser: (Entrypoint=%p, Base=%p, ArgC=%i, ArgV=%p, DataSize=0x%x)",
-		Entrypoint, Base, ArgC, ArgV, DataSize);
+//	Log_Debug("Proc", "Proc_StartUser: (Entrypoint=%p, Base=%p, ArgC=%i, ArgV=%p, DataSize=0x%x)",
+//		Entrypoint, Base, ArgC, ArgV, DataSize);
 
 	// Write data to the user's stack
 	usr_sp = (void*)MM_NewUserStack();
@@ -78,12 +79,10 @@ void Proc_StartUser(Uint Entrypoint, Uint Base, int ArgC, char **ArgV, int DataS
 
 	// Adjust user's copy of the arguments
 	delta = (tVAddr)usr_sp -  (tVAddr)ArgV;
-	Log("delta = %x", delta);
 	ArgV = (void*)usr_sp;
 	for(i = 0; ArgV[i]; i ++)	ArgV[i] += delta;
 	envp = &ArgV[i+1];
 	for(i = 0; envp[i]; i ++)	envp[i] += delta;
-	Log("envp = %p", envp);
 	
 	*--usr_sp = (Uint32)envp;
 	*--usr_sp = (Uint32)ArgV;
@@ -95,6 +94,11 @@ void Proc_StartUser(Uint Entrypoint, Uint Base, int ArgC, char **ArgV, int DataS
 	Proc_int_DropToUser(Entrypoint, (Uint32)usr_sp);
 }
 
+void Proc_ClearThread(tThread *Thread)
+{
+	Log_Warning("Proc", "TODO: Nuke address space etc");
+}
+
 tTID Proc_Clone(Uint Flags)
 {
 	tThread	*new;
@@ -112,6 +116,8 @@ tTID Proc_Clone(Uint Flags)
 	
 	new->SavedState.IP = pc;
 	new->SavedState.SP = sp;
+	new->SavedState.UserSP = Proc_int_SwapUserSP(0);
+	new->SavedState.UserIP = Proc_GetCurThread()->SavedState.UserIP;
 	new->MemState.Base = mem;
 
 	Threads_AddActive(new);
@@ -197,14 +203,18 @@ void Proc_Reschedule(void)
 	if(!next)	next = gpIdleThread;
 	if(!next || next == cur)	return;
 
-	Log("Switching to %p (%i %s) IP=%p SP=%p TTBR0=%p",
+	Log("Switching to %p (%i %s) IP=%p SP=%p TTBR0=%p UsrSP=%p",
 		next, next->TID, next->ThreadName,
-		next->SavedState.IP, next->SavedState.SP, next->MemState.Base
+		next->SavedState.IP, next->SavedState.SP, next->MemState.Base,
+		next->SavedState.UserSP
 		);
+
 	Log("Requested by %p", __builtin_return_address(0));
 	
 	gpCurrentThread = next;
 
+	cur->SavedState.UserSP = Proc_int_SwapUserSP( next->SavedState.UserSP );
+
 	SwitchTask(
 		next->SavedState.SP, &cur->SavedState.SP,
 		next->SavedState.IP, &cur->SavedState.IP,