Serial port used for writing kernel output.

Project: give total control to userland over display/input devices.

3 files changed, 13 insertions, 19 deletions

diff --git a/src/kernel/task/idt.cpp b/src/kernel/task/idt.cpp
index 94a31b7..782bbd6 100644
--- a/src/kernel/task/idt.cpp
+++ b/src/kernel/task/idt.cpp
@@ -80,9 +80,7 @@ static struct irq_waiter {
 extern "C" void idt_isrHandler(registers regs) {
 	if (regs.int_no != 14 || paging_fault(&regs)) {
 		if (tasking_handleException(&regs) == 0) {
-			*ke_vt << "\nREALLY BAD THIS TIME\t\tUnhandled exception\t#";
-			*ke_vt << regs.int_no;
-			*ke_vt << "\t@" << regs.eip;
+			dbg_printf("REALLY BAD THIS TIME: Unhandled exception #%d @%p\n", regs.int_no, regs.eip);
 			PANIC("Unhandled Exception");
 		}
 	}
diff --git a/src/kernel/task/syscall.cpp b/src/kernel/task/syscall.cpp
index 9e7c089..a3074b8 100644
--- a/src/kernel/task/syscall.cpp
+++ b/src/kernel/task/syscall.cpp
@@ -33,7 +33,7 @@ CALL2(process_waitpid, waitpid_sc);
 CALL1V(close, close_sc);
 
 static void printk_sc(registers *r) {
-	ke_vt->writeStr((char*)r->ebx);
+	dbg_printf("%s", (char*)r->ebx);
 }
 
 static void thread_new_sc(registers* r) {
diff --git a/src/kernel/task/task.cpp b/src/kernel/task/task.cpp
index 2af0441..2ad5447 100644
--- a/src/kernel/task/task.cpp
+++ b/src/kernel/task/task.cpp
@@ -104,40 +104,36 @@ void schedule() {
 /*	Called when an exception happens. Provides a stack trace if it was in kernel land.
 	Ends the thread for most exceptions, ends the whole process for page faults. */
 uint32_t tasking_handleException(registers *regs) {
-	node *n = current_thread->process->fd.at(0);
-	vt *vt = (n && n->as_vt() ? n->as_vt() : ke_vt);
-
 	if (current_thread == 0) return 0;	//No tasking yet
 	
-	vt->writeStr("\n");
-	vt->writeStr("[ke:"); vt->writeStr(__FILE__); vt->writeStr(":");
-	vt->writeDec(__LINE__); vt->writeStr("] ");
-	vt->writeStr("Exception: ");
+	dbg_printf("[ke:%s:%d] Exception: ", __FILE__, __LINE__);
 
 	char *exception_messages[] = {"Division By Zero","Debug","Non Maskable Interrupt","Breakpoint",
     "Into Detected Overflow","Out of Bounds","Invalid Opcode","No Coprocessor", "Double Fault",
     "Coprocessor Segment Overrun","Bad TSS","Segment Not Present","Stack Fault","General Protection Fault",
     "Page Fault","Unknown Interrupt","Coprocessor Fault","Alignment Check","Machine Check"};
-	*vt << exception_messages[regs->int_no];;
-	*vt << "\n\tPID: " << (int)current_thread->process->pid;
-	*vt << "\n\teip: " << regs->eip;
+
+	dbg_printf("%s\n", exception_messages[regs->int_no]);
+	dbg_printf("\tPID: %d\n", current_thread->process->pid);
+	dbg_printf("\teip: %p\n", regs->eip);
+	
 
 	if (regs->eip >= K_HIGHHALF_ADDR) {
-		*vt << "\n\tException in kernel.";
+		dbg_printf("\tException in kernel\n");
 		stack_trace(regs->ebp);	// useless
 	}
-	*vt << "\n\tTrace:";
+	dbg_printf("\tTrace:\n");
 	uint32_t *stack = (uint32_t*)regs->ebp, i;
 	for (i = 0; i < 7 && (size_t)stack < (regs->ebp + 0x4000) && (size_t) stack >= regs->ebp; i++) {
-		*vt << "\n\t  " << (size_t)stack << "    next: " << stack[0] << "    ret: " << stack[1];
+		dbg_printf("\t%p\tnext: %p\tret: %p\n", stack, stack[0], stack[1]);
 		stack = (uint32_t*)stack[0];
 	}
 
 	if (regs->int_no == 14) {
-		*vt << "\n\tKilling process.\n";
+		dbg_printf("\tKilling process.\n");
 		thread_exit_stackJmp(EX_PAGEFAULT);
 	} else {
-		*vt << "\n\tKilling thread.\n";
+		dbg_printf("\tKilling thread.\n");
 		thread_exit_stackJmp(EX_EXCEPTION);
 	}
 	PANIC("This should never have happened. Please report this.");