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Read time: 2 minute(s)
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< div class = "- topic/p p" data-ofbid = "d140433e36__20250519091520" > 使用 JTAG 调试器连接 SoC，
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< span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > test_dm_lib< / span > 命令动态加载 < span class = "+ topic/ph sw-d/filepath ph filepath" > hello.so< / span >
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为例，整个调试过程如下所示：< ol class = "- topic/ol ol simple" id = "dm_app_gdb_debug__ul_dnk_2n5_fdc" data-ofbid = "dm_app_gdb_debug__ul_dnk_2n5_fdc" >
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< li class = "- topic/li li" data-ofbid = "d140433e46__20250519091520" >
< div class = "- topic/p p" data-ofbid = "d140433e48__20250519091520" > 在 GDB 中给系统函数 < span class = "+ topic/keyword pr-d/apiname keyword apiname" > dlmodule_load()< / span >
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打上断点：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_enk_2n5_fdc" data-ofbid = "dm_app_gdb_debug__codeblock_enk_2n5_fdc" > (gdb) b dlmodule_load
< / pre > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d140433e57__20250519091520" >
< div class = "- topic/p p" data-ofbid = "d140433e59__20250519091520" > 在串口 Shell
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中执行下列测试启动命令：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_gnk_2n5_fdc" data-ofbid = "dm_app_gdb_debug__codeblock_gnk_2n5_fdc" > test_dm_lib< / pre > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d140433e65__20250519091520" >
< div class = "- topic/p p" data-ofbid = "d140433e67__20250519091520" > GDB 中断在 < span class = "+ topic/keyword pr-d/apiname keyword apiname" > dlmodule_load()< / span > 入口以后，输入 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > finish< / span >
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命令让 < span class = "+ topic/keyword pr-d/apiname keyword apiname" > dlmodule_load()< / span >
执行完成：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_ink_2n5_fdc" data-ofbid = "dm_app_gdb_debug__codeblock_ink_2n5_fdc" > (gdb) finish< / pre > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d140433e82__20250519091520" >
< div class = "- topic/p p" data-ofbid = "d140433e84__20250519091520" > 记录串口 Shell
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上打印出来的模块动态加载基地址：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_knk_2n5_fdc" data-ofbid = "dm_app_gdb_debug__codeblock_knk_2n5_fdc" > test_dm_lib< / pre > < / div >
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< div class = "- topic/p p" data-ofbid = "d140433e89__20250519091520" > 动态模块的基地址会在加载函数 < code class = "+ topic/ph pr-d/codeph ph codeph" > dlmodule_load()< / code >
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加载完动态模块后，打印出当前模块的基地址。例如，下列输出示例中，基地址为
0x404f8c80： < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_wlk_hnm_tdc" data-ofbid = "dm_app_gdb_debug__codeblock_wlk_hnm_tdc" > < span class = "hl-number" > 01< / span > -< span class = "hl-number" > 01< / span > < span class = "hl-number" > 10< / span > :< span class = "hl-number" > 05< / span > :< span class = "hl-number" > 30< / span > I/NO_TAG: Module: load /sdcard/hello.so to < span class = "hl-number" > 0x404f8c80< / span > succeed.
[AIC-DM-APP] init!< / pre > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d140433e98__20250519091520" >
< div class = "- topic/p p" data-ofbid = "d140433e100__20250519091520" > 通过 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > readelf< / span > 命令读取 ELF 文件 < code class = "+ topic/ph pr-d/codeph ph codeph" > .text< / code >
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段的偏移：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_mnk_2n5_fdc" data-ofbid = "dm_app_gdb_debug__codeblock_mnk_2n5_fdc" > readelf -S hello/hello.so< / pre > < / div >
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< div class = "- topic/p p" data-ofbid = "d140433e111__20250519091520" > 输出示例如下，< code class = "+ topic/ph pr-d/codeph ph codeph" > .text< / code > 的 Address 字段为
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'0x550'： < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_ocb_3nm_tdc" data-ofbid = "dm_app_gdb_debug__codeblock_ocb_3nm_tdc" > Section Headers:
[Nr] Name Type Address Offset
Size EntSize Flags Link Info Align
...
[< span class = "hl-number" > 7< / span > ] .text PROGBITS < span class = "hl-number" > 000000000000055000000550< / span >
< span class = "hl-number" > 000000000000008e< / span > < span class = "hl-number" > 0000000000000000< / span > AX < span class = "hl-number" > 002< / span >
...
< / pre > < / div >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d140433e121__20250519091520" >
< div class = "- topic/p p" data-ofbid = "d140433e123__20250519091520" > 根据已经获得的动态加载地址和 < code class = "+ topic/ph pr-d/codeph ph codeph" > .text< / code > 段偏移，使用下列公式计算出 < code class = "+ topic/ph pr-d/codeph ph codeph" > add-symbol-file
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hello.so xxx< / code >
的基地址：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_jfj_dp5_fdc" data-ofbid = "dm_app_gdb_debug__codeblock_jfj_dp5_fdc" > < span class = "hl-number" > 0x404f8c80< / span > + < span class = "hl-number" > 0x550< / span > = < span class = "hl-number" > 0x404F91D0< / span > < / pre > < / div >
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< p class = "- topic/p p" data-ofbid = "d140433e134__20250519091520" > 计算出 < code class = "+ topic/ph pr-d/codeph ph codeph" > .text< / code > 的动态基地址为 0x404F91D0， < / p >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d140433e141__20250519091520" >
< div class = "- topic/p p" data-ofbid = "d140433e143__20250519091520" > 使用 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > add-symbol-file< / span > 命令在 GDB 中加载
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< span class = "+ topic/ph sw-d/filepath ph filepath" > hello.so< / span >
符号表：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_pnk_2n5_fdc" data-ofbid = "dm_app_gdb_debug__codeblock_pnk_2n5_fdc" > (gdb) add-symbol-file aic-dm-apps/hello/hello.so < span class = "hl-number" > 0x404F91D0< / span >
< / pre > < / div >
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< p class = "- topic/p p" data-ofbid = "d140433e154__20250519091520" > GDB 就会根据给定的基地址加载 < span class = "+ topic/ph sw-d/filepath ph filepath" > hello.so< / span > 的符号表。< / p >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d140433e161__20250519091520" >
< p class = "- topic/p p" data-ofbid = "d140433e163__20250519091520" > 为了能够调试动态模块，需要在编译时保留原始 ELF 文件中的调试信息，详情可查看 < a class = "- topic/xref xref" href = "dm_app_gdb_debug.html#dm_app_gdb_debug__elf" > 保留 ELF 调试信息< / a > 。< / p >
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< / li >
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< li class = "- topic/li li" data-ofbid = "d140433e171__20250519091520" >
< div class = "- topic/p p" data-ofbid = "d140433e173__20250519091520" > 在 GDB 中跳转到 < span class = "+ topic/keyword pr-d/apiname keyword apiname" > my_thread_init()< / span >
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函数，并根据需求开始调试：< pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_rnk_2n5_fdc" data-ofbid = "dm_app_gdb_debug__codeblock_rnk_2n5_fdc" > (gdb) n
< span class = "hl-number" > 30< / span > func();(gdb) s
my_thread_init () at hello/rtt_api_test.c:< span class = "hl-number" > 18< / span >
< span class = "hl-number" > 18< / span > tid= rt_thread_create(< span class = "hl-string" > "tMyTask"< / span > , my_thread_entry, RT_NULL< / pre > < / div >
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< / li >
< / ol > < / div >
< section class = "- topic/section section" id = "dm_app_gdb_debug__elf" data-ofbid = "dm_app_gdb_debug__elf" > < h2 class = "- topic/title title sectiontitle" > 保留 ELF 调试信息< / h2 >
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< p class = "- topic/p p" data-ofbid = "d140433e188__20250519091520" > 为了能够调试动态模块，需要在编译时保留原始 ELF 文件中的调试信息。< / p >
< div class = "- topic/p p" data-ofbid = "d140433e191__20250519091520" > < span class = "+ topic/ph sw-d/filepath ph filepath" > hello.mo< / span > 和 < span class = "+ topic/ph sw-d/filepath ph filepath" > hello.so< / span > 原始 ELF 文件中含有 debug
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信息，为了减少动态加载时的内存大小，需要临时注释掉 < span class = "+ topic/ph sw-d/filepath ph filepath" > rtconfig.py< / span > 文件中的
< span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > strip< / span > 动作
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< span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > M_POST_ACTION< / span > ： < pre class = "+ topic/pre pr-d/codeblock pre codeblock language-c" id = "dm_app_gdb_debug__codeblock_zmk_2n5_fdc" data-ofbid = "dm_app_gdb_debug__codeblock_zmk_2n5_fdc" > M_POST_ACTION = M_STRIP + < span class = "hl-string" > ' -R .hash $TARGET\n'< / span > + M_SIZE + < span class = "hl-string" > ' $TARGET \n'< / span > < / pre > < ul class = "- topic/ul ul" id = "dm_app_gdb_debug__ul_pqw_s5s_vcc" data-ofbid = "dm_app_gdb_debug__ul_pqw_s5s_vcc" >
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< li class = "- topic/li li" data-ofbid = "d140433e212__20250519091520" > 如果 < code class = "+ topic/ph pr-d/codeph ph codeph" > aic-dm-apps< / code > 位于 < span class = "- topic/ph ph" > Luban-Lite< / span > 项目的
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< span class = "+ topic/ph sw-d/filepath ph filepath" > \bsp\artinchip\sys\dm\< / span > 目录下，修改该目录下的
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< span class = "+ topic/ph sw-d/filepath ph filepath" > rtconfig.py< / span > 文件。< / li >
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< li class = "- topic/li li" data-ofbid = "d140433e227__20250519091520" > 如果 < code class = "+ topic/ph pr-d/codeph ph codeph" > aic-dm-apps< / code > 已从 Luban-Lite 项目中拷贝出来，则修改该文件
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< span class = "+ topic/ph sw-d/filepath ph filepath" > aic-dm-apps\tools\sdk\< / span > 目录下的
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< span class = "+ topic/ph sw-d/filepath ph filepath" > rtconfig.py< / span > 文件。< / li >
< / ul > < / div >
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< p class = "- topic/p p" data-ofbid = "d140433e240__20250519091520" > 重新运行 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > scons --app=hello< / span > 或者 < span class = "+ topic/keyword sw-d/cmdname keyword cmdname" > scons --lib=hello< / span >
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，编译出来的 < span class = "+ topic/ph sw-d/filepath ph filepath" > hello.mo< / span > 或者 < span class = "+ topic/ph sw-d/filepath ph filepath" > hello.so< / span > ELF 文件就会带
debug 调试信息。< / p >
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< / section >
< / div >
< / article > < / main > < / div >
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< / div >
< / div >
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< / div >
< footer class = "navbar navbar-default wh_footer" >
< div class = " footer-container mx-auto " >
< title > footer def< / title >
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< style >
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.p1 {
font-family: FangZhengShuSong, Times, serif;
}
.p2 {
font-family: Arial, Helvetica, sans-serif;
}
.p3 {
font-family: "Lucida Console", "Courier New", monospace;
}
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< / style >
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< div class = "webhelp.fragment.footer" >
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< p class = "p1" > Copyright © 2019-2025 广东匠芯创科技有限公司. All rights reserved.< / p >
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< div >
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< div class = "generation_time" >
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Update Time: 2025-05-19
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< / div >
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< div id = "go2top" class = "d-print-none" >
< span class = "oxy-icon oxy-icon-up" > < / span >
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< div id = "modal_img_large" class = "modal" >
< span class = "close oxy-icon oxy-icon-remove" > < / span >
< div id = "modal_img_container" > < / div >
< div id = "caption" > < / div >
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< script src = "${pd}/publishing/publishing-styles-AIC-template/js/custom.js" defer = "defer" > < / script >
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