M2-Planet/test/common_knight/libc-core.M1

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## Copyright (C) 2016 Jeremiah Orians
## This file is part of M2-Planet.
##
## M2-Planet is free software: you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation, either version 3 of the License, or
## (at your option) any later version.
##
## M2-Planet is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with M2-Planet. If not, see <http://www.gnu.org/licenses/>.
:_start
;; Kernel Setup R12 as HEAP pointer after end of the stack
;; Kernel Setup R15 as Stack pointer after the initial stack frame
;; Default stack frame is:
;; ARGC, ARGV, ENVP, NULL
SUBI R14 R15 16 ; Set our base pointer
;; Perform the main loop
LOADR R0 4
JUMP 4
&FUNCTION_main
CALL R0 R15
;; Exit to kernel
EXIT ; Return what is in R0