Files
jsix/src/kernel/debug.s
Justin C. Miller 972a35bdef [kernel] Add get_grandcaller debug function
This should probably be replaced with a function taking the number of
steps back, but this is quick and useful.
2021-07-15 23:34:35 -07:00

34 lines
473 B
ArmAsm

global get_rsp
get_rsp:
mov rax, rsp
ret
global get_rip
get_rip:
pop rax ; do the same thing as 'ret', except with 'jmp'
jmp rax ; with the return address still in rax
global get_caller
get_caller:
; No prelude - don't touch rsp or rbp
mov rax, [rbp+8]
ret
global get_grandcaller
get_grandcaller:
; No prelude - don't touch rsp or rbp
mov rax, [rbp]
mov rax, [rax+8]
ret
global get_gsbase
get_gsbase:
rdgsbase rax
ret
global _halt
_halt:
hlt
jmp _halt