Function unwind_backtrace

libcpu/arm/cortex-a/backtrace.c:482–510

}

void unwind_backtrace(struct pt_regs *regs, const struct unwind_idx exidx_start[], const struct unwind_idx exidx_end[])
{
    struct stackframe frame;
    const struct unwind_idx *origin_idx = RT_NULL;

    LOG_D("%s(regs = %x)", __func__, regs);

    arm_get_current_stackframe(regs, &frame);

#ifndef RT_BACKTRACE_FUNCTION_NAME
    rt_kprintf("please use: addr2line -e rtthread.elf -a -f %08x\n", frame.pc);
#endif
    LOG_D("pc = %08x, sp = %08x", frame.pc, frame.sp);

    while (1)
    {
        int urc;

        urc = unwind_frame(&frame, &origin_idx, exidx_start, exidx_end);
        if (urc < 0)
            break;
        //dump_backtrace_entry(where, frame.pc, frame.sp - 4);
#ifndef RT_BACKTRACE_FUNCTION_NAME
        rt_kprintf(" %08x", frame.pc);
#endif
        LOG_D("from: pc = %08x, frame = %08x", frame.pc, frame.sp - 4);
    }
    rt_kprintf("\n");
}

extern const struct unwind_idx __exidx_start[];
extern const struct unwind_idx __exidx_end[];