WINCE下从data abort 找到崩溃的代码

傷城~ 2022-08-11 12:28 143阅读 0赞

<table style="table-layout: fixed;"> 
 <tbody> 
  <tr> 
   <td> 
    <div> 
     <p><span style="word-spacing: 0px; font: 13px/19px Verdana; text-transform: none; color: #000000; text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0;">编译的时候注意先在project settings里的Link页里勾选“Generate mapfile”，会生成一个map文件。</span></p> 
     <p>&nbsp;</p> 
     <p>&nbsp;</p> 
     <span style="word-spacing: 0px; font: 13px/19px Verdana; text-transform: none; color: #000000; text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0;"><span style="word-spacing: 0px; font: 13px/19px Verdana; text-transform: none; color: #000000; text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0;"> <p style="margin: 0px auto 10px;">把编译出来的RELEASE版本可执行文件放到CE5平台下运行。出错的时候串口打印了一句</p> <p style="margin: 0px auto 10px;">Data Abort: Thread=83ad1d38 Proc=820266d0 'walzer_leak.exe'<br>AKY=00000021 PC=00011008(walzer_leak.exe+0x00001008) RA=00011030(walzer_leak.exe+0x00001030) BVA=81000000 FSR=0000000d</p> <p style="margin: 0px auto 10px;">这句是系统自动输出的。我们得到了一个关键的信息：PC指针。和PC指针在walzer_leak.exe中的偏移量。然后打开编译时生成的walzer_leak.map文件<br>，</p> <p style="margin: 0px auto 10px;">&nbsp;</p> <span style="word-spacing: 0px; font: 13px/19px Verdana; text-transform: none; color: #000000; text-indent: 0px; white-space: normal; letter-spacing: normal; border-collapse: separate; orphans: 2; widows: 2; -webkit-border-horizontal-spacing: 0px; -webkit-border-vertical-spacing: 0px; -webkit-text-decorations-in-effect: none; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0;"> <p style="margin: 0px auto 10px;">OK，首先，里面有一句“Preferred load address is 00010000”，这意味着DATA ABORT那句的PC=00011008(walzer_leak.exe+0x00001008) 我们必须把括</p> <p style="margin: 0px auto 10px;">号里的0x1008加上这个load address的偏移量，得到0x11008（注意不能直接用PC，一会儿再给个案例就知道了），然后我们在函数偏移列表里看Rva+Base</p> <p style="margin: 0px auto 10px;">这栏，找到0x11008落在了DoLeak函数的地址范围里，所以是DoLeak函数泄漏了</p> </span></span></span> 
    </div> </td> 
  </tr> 
 </tbody> 
</table>