; Acess2 x86_64 Port
;
[bits 64]
-KERNEL_BASE equ 0xFFFF800000000000
+;KERNEL_BASE equ 0xFFFF800000000000
+KERNEL_BASE equ 0xFFFFFFFF80000000
[extern kmain]
[global GetCPUNum]
GetCPUNum:
- str ax
- mov gs, ax
xor rax, rax
- mov al, [gs:104] ; End of TSS
+ str ax
+ sub ax, 0x38 ; TSS Base
+ shr ax, 4 ; One 16-byte TSS per CPU
ret
KSTACK_USERSTATE_SIZE equ (16+1+5)*8 ; GPRegs, CPU, IRET