os_kernel_lab/labcodes/lab7/user/libs/initcode.S

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ArmAsm
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2012-08-22 12:32:13 +08:00
.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