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/usrbin/usrbin.bin | Bin 76 -> 59 bytes 1 file changed, 0 insertions(+), 0 deletions(-) (limited to 'kernel/usrbin/usrbin.bin') diff --git a/kernel/usrbin/usrbin.bin b/kernel/usrbin/usrbin.bin index a7d7730..bdf8c29 100644 Binary files a/kernel/usrbin/usrbin.bin and b/kernel/usrbin/usrbin.bin differ -- cgit v1.3