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| author | Loic Guegan <manzerbredes@mailbox.org> | 2021-05-02 14:46:18 +0200 |
|---|---|---|
| committer | Loic Guegan <manzerbredes@mailbox.org> | 2021-05-02 14:46:18 +0200 |
| commit | e59104ffb55abe522c82d658f1f285149cca2cb1 (patch) | |
| tree | eb3cc1e46d0dd5b684864903b95ae32e245010da /src/core/scheduler_asm.S | |
| parent | 4f08ba2b1d0ad7ea90d4d97a483b56b891b9c902 (diff) | |
Debug GDT enable multitasking
Diffstat (limited to 'src/core/scheduler_asm.S')
| -rw-r--r-- | src/core/scheduler_asm.S | 27 |
1 files changed, 17 insertions, 10 deletions
diff --git a/src/core/scheduler_asm.S b/src/core/scheduler_asm.S index fc8bc50..8f417c4 100644 --- a/src/core/scheduler_asm.S +++ b/src/core/scheduler_asm.S @@ -2,26 +2,33 @@ - +.extern kvar_stack_pma switch: - - mov $0x23, %ax + # TODO: Check if we come from kernel mode (use kernel stack) + # TODO: restore all registers + + mov 96(%rdi), %ax mov %ax, %ds mov %ax, %es mov %ax, %fs mov %ax, %gs - push $0x23 # - push $0x80 + mov (%rdi), %rax + mov %rax, %cr3 + + push 96(%rdi) + push 64(%rdi) pushf pop %rax - #orl $0x200, %%eax - mov $0xffffbfff, %rbx + or $0x200, %rax # Enable interrupt + mov $0xffffffffbfff, %rbx # NT flag and %rbx, %rax push %rax - push $0x1B - push $0x0 - + push 40(%rdi) + push 48(%rdi) + + + # Perform task switching iretq |