mirror of
https://github.com/tailix/libkernaux.git
synced 2024-11-13 11:04:27 -05:00
38 lines
499 B
ArmAsm
38 lines
499 B
ArmAsm
|
.section .init
|
||
|
|
|
||
|
|
.option norvc
|
||
|
|
|
||
|
|
.type _start, @function
|
||
|
|
.global _start
|
||
|
|
_start:
|
||
|
|
.cfi_startproc
|
||
|
|
|
||
|
|
.option push
|
||
|
|
.option norelax
|
||
|
|
la gp, global_pointer
|
||
|
|
.option pop
|
||
|
|
|
||
|
|
/* Reset satp */
|
||
|
|
csrw satp, zero
|
||
|
|
|
||
|
|
/* Setup stack */
|
||
|
|
la sp, stack_top
|
||
|
|
|
||
|
|
/* Clear the BSS section */
|
||
|
|
la t5, bss_start
|
||
|
|
la t6, bss_end
|
||
|
|
bss_clear:
|
||
|
|
sd zero, (t5)
|
||
|
|
addi t5, t5, 8
|
||
|
|
bgeu t5, t6, bss_clear
|
||
|
|
|
||
|
|
la t0, main
|
||
|
|
csrw mepc, t0
|
||
|
|
|
||
|
|
/* Jump to kernel! */
|
||
|
|
tail main
|
||
|
|
|
||
|
|
.cfi_endproc
|
||
|
|
|
||
|
|
.end
|