From 8e933fac9fd068343bb602f13175c8d70a6c5768 Mon Sep 17 00:00:00 2001 From: Jake Mannens Date: Wed, 1 Aug 2018 02:27:57 +1000 Subject: Defined EOF as -1 in stdio.h. Implemented the sprintf() library function in lib/stdio.c which uses the vsprintf() function. Implemented a very primative controlling TTY for each process. This is achieved by a switch in the sys_puts system call which uses the 'ctty' element of the process' task structure to determine an appropriate I/O channel. A negative ctty value doesn't equate to any I/O channel effectively disabling the process' output. Added the sys_ctty system call which allows a process to set it's own ctty value. Removed the sys_rsputs system call. Output to serial is now performed by the process first setting it's ctty value to 1, then invoking sys_puts. --- kernel/traps.s | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) (limited to 'kernel/traps.s') diff --git a/kernel/traps.s b/kernel/traps.s index 0a0d202..408a650 100644 --- a/kernel/traps.s +++ b/kernel/traps.s @@ -21,8 +21,8 @@ extern ticked ; too. %define ts_signal 6 -%define ts_sig_handlers 14 -%define ts_tss_esp0 146 +%define ts_sig_handlers 18 +%define ts_tss_esp0 150 %macro SAVE 0 pusha -- cgit v1.3