os_kernel_lab/labcodes_answer/lab7_result/user/libs/initcode.S
2014-08-20 15:42:20 +08:00

15 lines
241 B
ArmAsm

.text
.globl _start
_start:
# set ebp for backtrace
movl $0x0, %ebp
# move down the esp register
# since it may cause page fault in backtrace
subl $0x20, %esp
# call user-program function
call umain
1: jmp 1b