diff options
Diffstat (limited to 'src/stem/task/task.c')
| -rw-r--r-- | src/stem/task/task.c | 12 |
1 files changed, 7 insertions, 5 deletions
diff --git a/src/stem/task/task.c b/src/stem/task/task.c index 0352308..804adc2 100644 --- a/src/stem/task/task.c +++ b/src/stem/task/task.c @@ -85,6 +85,7 @@ void tasking_switch() { } void tasking_updateKernelPagetable(uint32_t idx, struct page_table *table, uint32_t tablephysical) { + if (idx < 896) return; struct process* it = processes; while (it != 0) { it->pagedir->tables[idx] = table; @@ -94,16 +95,17 @@ void tasking_updateKernelPagetable(uint32_t idx, struct page_table *table, uint3 } uint32_t tasking_handleException(struct registers *regs) { - if (threads == 0) return 0; //No tasking yet - monitor_write("\nUnhandled exception : "); + if (current_thread == 0) return 0; //No tasking yet + monitor_write("\n(task.c:99) Unhandled 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"}; monitor_write(exception_messages[regs->int_no]); - monitor_write("\nThread exiting.\n"); + monitor_write(" at "); monitor_writeHex(regs->eip); + monitor_write(" >>> Thread exiting.\n"); thread_exit_stackJmp(EX_TH_EXCEPTION); - return 0; + PANIC("This should never have happened. Please report this."); } void thread_sleep(uint32_t msecs) { @@ -225,7 +227,7 @@ static void thread_delete(struct thread *th) { static void process_delete(struct process *pr) { struct thread *it; - while (threads->process == pr) thread_delete(threads); + while (threads != 0 && threads->process == pr) thread_delete(threads); it = threads; while (it != 0) { while (it->next->process == pr) thread_delete(it->next); |