root/lib/libc/arm/gen/_ctx_start.S
#include <machine/asm.h>

ENTRY(_ctx_start)
        mov     lr, pc
        mov     pc, r4
        mov     r0, r5
        bl      _C_LABEL(ctx_done)
        bl      _C_LABEL(abort)
END(_ctx_start)

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