From 2c429f6e1ac51ea27f203005eeef20d2b05c759e Mon Sep 17 00:00:00 2001 From: Jake Mannens Date: Sat, 23 Jun 2018 08:28:19 +1000 Subject: Re-wrote interrupt handling. Now, flush_idt only initializes IDT entries 32-255. A separate routine in the new file traps.s initializes the first 32 entries with addresses pointing to exception handlers within said file. Modified the register_isr function to now accept a descriptor privilege level which it will assign to the modified IDT entry. Added a task state segment and corresponding entry to the GDT. The TSS will store the kernel's stack pointer and stack segment when switching to userspace. NOTE: The stack pointer MUST be saved manually before switching to userspace! Added the framework for a system call interface at interrupt vector 0x80 (128). --- kernel/kmain.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'kernel/kmain.c') diff --git a/kernel/kmain.c b/kernel/kmain.c index 81fe741..bf6b9ae 100644 --- a/kernel/kmain.c +++ b/kernel/kmain.c @@ -10,8 +10,8 @@ extern void userspace_init(void); void kmain(void) { con_init(); - printf("Kernel booting...\n\n"); - printf("\nKernel booted!\n"); + printf("Kernel booting...\n"); + printf("Kernel booted!\n\n"); userspace_init(); } -- cgit v1.3