Many bug corrections.

5 files changed, 42 insertions, 18 deletions

diff --git a/src/kernel/core/main.cpp b/src/kernel/core/main.cpp
new file mode 100644
index 0000000..e69de29
--- /dev/null
+++ b/src/kernel/core/main.cpp
diff --git a/src/kernel/mem/paging.cpp b/src/kernel/mem/paging.cpp
index 2ac190f..5c5a929 100644
--- a/src/kernel/mem/paging.cpp
+++ b/src/kernel/mem/paging.cpp
@@ -136,14 +136,22 @@ uint32_t paging_fault(registers *regs) {
 	}
 
 	if (seg == 0) {
-		NL; WHERE; *ke_vt << "Unhandled Page Fault (PID " << current_thread->process->pid << ")\t";
-		*ke_vt << "cr2:" << addr;
-		NL; TAB;
-		if (regs->err_code & 0x1) *ke_vt << "present"; TAB;
-		if (regs->err_code & 0x2) *ke_vt << "write"; TAB;
-		if (regs->err_code & 0x4) *ke_vt << "user"; TAB;
-		if (regs->err_code & 0x8) *ke_vt << "rsvd"; TAB;
-		if (regs->err_code & 0x10) *ke_vt << "opfetch";
+		node *n = current_thread->process->fd.at(0);
+		vt *vt = (n && n->as_vt() ? n->as_vt() : ke_vt);
+
+		vt->writeStr("\n");
+		vt->writeStr("[ke:"); vt->writeStr(__FILE__); vt->writeStr(":");
+		vt->writeDec(__LINE__); vt->writeStr("] ");
+		vt->writeStr("Unhandled Page Fault");
+
+		*vt << "\n\tPID: " << (int)current_thread->process->pid;
+		*vt << "\n\tcr2: " << addr;
+		*vt << "\n\tflags: ";
+		if (regs->err_code & 0x1) *vt << "present ";
+		if (regs->err_code & 0x2) *vt << "write ";
+		if (regs->err_code & 0x4) *vt << "user ";
+		if (regs->err_code & 0x8) *vt << "rsvd ";
+		if (regs->err_code & 0x10) *vt << "opfetch ";
 		return 1;
 	}
 	return 0;
diff --git a/src/kernel/task/idt.cpp b/src/kernel/task/idt.cpp
index e56a51b..94a31b7 100644
--- a/src/kernel/task/idt.cpp
+++ b/src/kernel/task/idt.cpp
@@ -78,7 +78,7 @@ static struct irq_waiter {
 /*	Called in idt_.asm when an exception fires (interrupt 0 to 31).
 	Tries to handle the exception, panics if fails. */
 extern "C" void idt_isrHandler(registers regs) {
-	if ((regs.int_no == 14 && paging_fault(&regs) != 0) || regs.int_no != 14) {
+	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;
diff --git a/src/kernel/task/task.cpp b/src/kernel/task/task.cpp
index 91f802d..2af0441 100644
--- a/src/kernel/task/task.cpp
+++ b/src/kernel/task/task.cpp
@@ -104,24 +104,40 @@ 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
-	NL; WHERE; ke_vt->writeStr("Exception: `");
+	
+	vt->writeStr("\n");
+	vt->writeStr("[ke:"); vt->writeStr(__FILE__); vt->writeStr(":");
+	vt->writeDec(__LINE__); vt->writeStr("] ");
+	vt->writeStr("Exception: ");
+
 	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"};
-	*ke_vt << exception_messages[regs->int_no];
-	*ke_vt << "'\teip:" << regs->eip;
+	*vt << exception_messages[regs->int_no];;
+	*vt << "\n\tPID: " << (int)current_thread->process->pid;
+	*vt << "\n\teip: " << regs->eip;
+
 	if (regs->eip >= K_HIGHHALF_ADDR) {
-		*ke_vt << "\nException in kernel. Stack trace:\n";
-		stack_trace(regs->ebp);
+		*vt << "\n\tException in kernel.";
+		stack_trace(regs->ebp);	// useless
+	}
+	*vt << "\n\tTrace:";
+	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];
+		stack = (uint32_t*)stack[0];
 	}
-	*ke_vt << "\n (PID " << current_thread->process->pid << ")  ";
+
 	if (regs->int_no == 14) {
-		*ke_vt << ">>> Process exiting.\n";
+		*vt << "\n\tKilling process.\n";
 		thread_exit_stackJmp(EX_PAGEFAULT);
 	} else {
-		*ke_vt << ">>> Thread exiting.\n";
+		*vt << "\n\tKilling thread.\n";
 		thread_exit_stackJmp(EX_EXCEPTION);
 	}
 	PANIC("This should never have happened. Please report this.");
diff --git a/src/kernel/ui/vt.cpp b/src/kernel/ui/vt.cpp
index 6876806..ec18808 100644
--- a/src/kernel/ui/vt.cpp
+++ b/src/kernel/ui/vt.cpp
@@ -310,7 +310,7 @@ int vt::write(size_t offset, size_t len, char* buffer) {
 						fgcolor &= TC_MAKE_DARK;
 					} else if (n >= 30 && n <= 37) {
 						fgcolor = (fgcolor & TC_MAKE_LIGHT) | (n - 30);
-					} else if (n >= 40 && n <= 47) {
+					} else if (n >= 40 && n <= 55) {
 						bgcolor = (n - 40);
 					} else {
 						// others to do.