root/lib/csu/arm/crti.S
#include <machine/asm.h>
        .section .init,"ax",%progbits
        .align 4
        .globl  _init
        .type   _init,%function
_init:
        mov     ip, sp
        stmdb   sp!, {fp, ip, lr, pc}
        sub     fp, ip, #4

        .section .fini,"ax",%progbits
        .align 4
        .globl  _fini
        .type   _fini,%function
_fini:
        mov     ip, sp
        stmdb   sp!, {fp, ip, lr, pc}
        sub     fp, ip, #4

        .section .note.GNU-stack,"",%progbits