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sortix--sortix/kernel/x86/base.S

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/*******************************************************************************
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Copyright(C) Jonas 'Sortie' Termansen 2011.
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This file is part of Sortix.
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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.
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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.
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You should have received a copy of the GNU General Public License along with
Sortix. If not, see <http://www.gnu.org/licenses/>.
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x86/base.S
Bootstraps the kernel and passes over control from the boot-loader to the
kernel main function.
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*******************************************************************************/
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.section .text
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.global beginkernel
.type beginkernel, @function
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beginkernel:
# Initialize the stack pointer. The magic value is from kernel.cpp.
movl $stack, %esp
addl $65536, %esp # 64 KiB, see kernel.cpp
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# 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
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.size beginkernel, . - beginkernel
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.global HaltKernel
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HaltKernel:
cli
hlt
jmp HaltKernel
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.size HaltKernel, . - HaltKernel
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.global WaitForInterrupt
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.type WaitForInterrupt, @function # void WaitForInterrupt();
WaitForInterrupt:
hlt
ret
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.size WaitForInterrupt, . - WaitForInterrupt