/*******************************************************************************

    Copyright(C) Jonas 'Sortie' Termansen 2011.

    This file is part of Sortix.

    Sortix 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.

    Sortix 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
    Sortix. If not, see <http://www.gnu.org/licenses/>.

    x86/base.s
    Bootstraps the kernel and passes over control from the boot-loader to the
    kernel main function.

*******************************************************************************/

.section .text

.global beginkernel
.type beginkernel, @function
beginkernel:
	# Initialize the stack pointer. The magic value is from kernel.cpp.
	movl $stack, %esp
	addl $65536, %esp # 64 KiB, see kernel.cpp

	# Reset EFLAGS.
	# pushl	$0
	# popf

	# Push the pointer to the Multiboot information structure.
	push	%ebx
	# Push the magic value.
	push	%eax

	## Disable interrupts.
	cli

	call KernelInit
.size beginkernel, . - beginkernel

.global HaltKernel
HaltKernel:
	cli
	hlt
	jmp HaltKernel
.size HaltKernel, . - HaltKernel

.global WaitForInterrupt
.type WaitForInterrupt, @function # void WaitForInterrupt();
WaitForInterrupt:
	hlt
	ret
.size WaitForInterrupt, . - WaitForInterrupt