// === GLOBALS ===
MODULE_DEFINE(0, 0x100, VM8086, VM8086_Install, NULL, NULL);
tMutex glVM8086_Process;
// === GLOBALS ===
MODULE_DEFINE(0, 0x100, VM8086, VM8086_Install, NULL, NULL);
tMutex glVM8086_Process;
tPID gVM8086_WorkerPID;
tTID gVM8086_CallingThread;
tVM8086 volatile * volatile gpVM8086_State = (void*)-1; // Set to -1 to avoid race conditions
tPID gVM8086_WorkerPID;
tTID gVM8086_CallingThread;
tVM8086 volatile * volatile gpVM8086_State = (void*)-1; // Set to -1 to avoid race conditions
// Map ROM Area
for(i=0xA0;i<0x100;i++) {
MM_Map( i * 0x1000, i * 0x1000 );
// Map ROM Area
for(i=0xA0;i<0x100;i++) {
MM_Map( i * 0x1000, i * 0x1000 );
}
Log_Debug("VM8086", "ROM area mapped");
MM_Map( 0, 0 ); // IVT / BDA
}
Log_Debug("VM8086", "ROM area mapped");
MM_Map( 0, 0 ); // IVT / BDA
for(i=1;i<0x9F;i++) {
MM_Map( i * 0x1000, i * 0x1000 );
MM_DerefPhys( i * 0x1000 ); // Above
for(i=1;i<0x9F;i++) {
MM_Map( i * 0x1000, i * 0x1000 );
MM_DerefPhys( i * 0x1000 ); // Above
MM_DerefPhys( i * 0x1000 ); // Phys setup
}
MM_Map( 0x9F000, 0x9F000 ); // Stack / EBDA
MM_DerefPhys( i * 0x1000 ); // Phys setup
}
MM_Map( 0x9F000, 0x9F000 ); // Stack / EBDA
}
//Log_Log("VM8086", "Waiting for something to do");
__asm__ __volatile__ ("sti");
}
//Log_Log("VM8086", "Waiting for something to do");
__asm__ __volatile__ ("sti");
- // Wait for a new task
- while(!gpVM8086_State) {
- Threads_Sleep();
- //Log_Log("VM8086", "gpVM8086_State = %p", gpVM8086_State);
- }
+ Semaphore_Wait(&gVM8086_TasksToDo, 1);
//Log_Log("VM8086", "We have a task (%p)", gpVM8086_State);
Regs->esp -= 2; *(Uint16*volatile)( (Regs->ss<<4) + (Regs->esp&0xFFFF) ) = VM8086_MAGIC_CS;
//Log_Log("VM8086", "We have a task (%p)", gpVM8086_State);
Regs->esp -= 2; *(Uint16*volatile)( (Regs->ss<<4) + (Regs->esp&0xFFFF) ) = VM8086_MAGIC_CS;
- Threads_WakeTID( gVM8086_WorkerPID );
- Threads_Sleep();
- while( gpVM8086_State != NULL ) Threads_Sleep();
+ Semaphore_Signal(&gVM8086_TasksToDo, 1);
+
+ Semaphore_Wait(&gVM8086_TaskComplete, 1);