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Diffstat (limited to 'src/kernel/arch/amd64/boot64.s')
| -rw-r--r-- | src/kernel/arch/amd64/boot64.s | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/src/kernel/arch/amd64/boot64.s b/src/kernel/arch/amd64/boot64.s new file mode 100644 index 0000000..1dca0ca --- /dev/null +++ b/src/kernel/arch/amd64/boot64.s @@ -0,0 +1,13 @@ +.global boot64 +boot64: + lgdt (lgdt_arg) // try reloading gdt again + mov $(5 << 3 | 3), %ax // SEG_TSS + ltr %ax + + xchgw %bx, %bx + push %rdi // preserve multiboot struct + call sysenter_setup + pop %rdi + + // multiboot struct in %rdi + jmp kmain_early |