User mode code can now run !

We have a sample process (hardcoded in ASM in Task.wtf.asm) that
displays a's and sleeps 20ms, but it's on a hidden virtual terminal so
it's useless :D

1 files changed, 10 insertions, 1 deletions

diff --git a/Source/Kernel/SyscallManager/IDT.ns.cpp b/Source/Kernel/SyscallManager/IDT.ns.cpp
index fcab741..fcdf2ff 100644
--- a/Source/Kernel/SyscallManager/IDT.ns.cpp
+++ b/Source/Kernel/SyscallManager/IDT.ns.cpp
@@ -55,6 +55,7 @@ extern "C" void irq13();
 extern "C" void irq14();
 extern "C" void irq15();
 
+extern "C" void int64();		//Main syscall
 extern "C" void int65();		//Syscall to request a task switch
 extern "C" void int66();		//Syscall to signal that thread ended
 
@@ -73,6 +74,13 @@ extern "C" void interrupt_handler(registers_t regs) {
 		Dev::handleIRQ(regs, (regs.int_no - 32));
 		doSwitch = doSwitch or Task::IRQwakeup(regs.int_no - 32);
 	}
+	if (regs.int_no == 64) {
+		if (regs.eax == 1) {
+			Task::currProcess()->getVirtualTerminal()->put(WChar(regs.ebx));
+		} else if (regs.eax == 2) {
+			Task::currThread()->sleep(regs.ebx);
+		}
+	}
 	if (regs.int_no == 66) {	//This syscall signals to kernel that thread ended.
 		Task::currentThreadExits(regs.eax);	//DO NOT COUNT ON COMMING BACK FROM HERE
 	}
@@ -89,7 +97,7 @@ void setGate(u8int num, u32int base, u16int sel, u8int flags) {
 	idt_entries[num].base_hi = (base >> 16) & 0xFFFF;
 
 	idt_entries[num].sel = sel;
-	idt_entries[num].flags = flags;
+	idt_entries[num].flags = flags | 0x60;
 	idt_entries[num].always0 = 0;
 }
 
@@ -161,6 +169,7 @@ void init() {
 	setGate(46, (u32int)irq14, 0x08, 0x8E);
 	setGate(47, (u32int)irq15, 0x08, 0x8E);
 
+	setGate(64, (u32int)int64, 0x08, 0x8E);
 	setGate(65, (u32int)int65, 0x08, 0x8E);
 	setGate(66, (u32int)int66, 0x08, 0x8E);