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| author | Joursoir <chat@joursoir.net> | 2021-08-30 12:54:55 +0000 |
|---|---|---|
| committer | Joursoir <chat@joursoir.net> | 2021-08-30 12:54:55 +0000 |
| commit | 657cbdedb6edeec1340fa36b501c3b2e9fc6df0a (patch) | |
| tree | 1399b0f7c9816170942e10811e9594ac77fc0e54 /arch/x86 | |
| parent | d835cae0968ea5d6e9989dac637449b8d403ac5e (diff) | |
| download | mfsos-657cbdedb6edeec1340fa36b501c3b2e9fc6df0a.tar.gz mfsos-657cbdedb6edeec1340fa36b501c3b2e9fc6df0a.tar.bz2 mfsos-657cbdedb6edeec1340fa36b501c3b2e9fc6df0a.zip | |
x86/boot: add asm routine for entering the kernel
Diffstat (limited to 'arch/x86')
| -rw-r--r-- | arch/x86/boot/kernel_entry.s | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/x86/boot/kernel_entry.s b/arch/x86/boot/kernel_entry.s new file mode 100644 index 0000000..e0fd132 --- /dev/null +++ b/arch/x86/boot/kernel_entry.s @@ -0,0 +1,12 @@ +# bootsect.s loads the kernel and transfers control to SYSSEG address. +# We cannot be sure that the main() function will be exactly at this +# address. + +# Therefore, we will use a small trick for entering the kernel correctly: +# Locate this small assembly routine at the beginning of the SYSSEG +# address => we can be sure that control will transfer to main() + +.code32 +.extern kernel_main + call kernel_main + jmp . |