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.text .globl _start _start: mov ip, sp stmdb sp!, {r11, ip, lr, pc} bl app_func ldmia sp, {r11, sp, lr} bx lr .globl app_func app_func: mov ip, sp stmdb sp!, {r11, ip, lr, pc} bl lib_func1 ldmia sp, {r11, sp, lr} bx lr .globl app_func2 app_func2: bx lr .data .long data_obj