Shell的Debug命令

Taishan3721

发布于 2021-01-08 15:39:50

6480

发布于 2021-01-08 15:39:50

使用Host的Target Server与Target的WDB Agent连接后，既可以使用Workbench的Debugger进行图形化的在线调试，也可以使用Host Shell的gdb进行命令行的调试。

如果没有Target Connection呢？其实VxWorks还提供了一个专门用在Shell里的dbgLib - debugging facilities(INCLUDE_DEBUG)

-> dbgHelp
b                               Display breakpoints and eventpoints
b         addr[,task[,count [,quiet]]]
                                Set breakpoint
bi        [bpId]                Display breakpoint(s) detailed information
e         addr[,eventNo[,task[,func[,arg]]]]] Set eventpoint
dprintf   addr,task,count,fmtStr[,args]
                                Set dynamic printf eventpoint
bd        addr[,task]           Delete breakpoint
bdall     [task]                Delete all breakpoints and eventpoints
c         [task[,addr[,addr1]]] Continue from breakpoint
cret      [task]                Continue to subroutine return
s         [task[,addr[,addr1]]] Single step
so        [task]                Single step/step over subroutine
l         [adr[,nInst]]         List disassembled memory
tt        [task]                Do stack trace on task
hdprintf  addr,access,task,count,fmtStr[,args]
                                Set hardware dynamic printf eventpoint
                                (bh() help entry lists access modes)
bh addr[,access[,task[,count[,quiet]]]] Set hardware breakpoint
         access :      0 - instruction        1 - write 1 byte
                       3 - read/write 1 byte  5 - write 2 bytes
                       7 - read/write 2 bytes d - write 4 bytes
                       f - read/write 4 bytes 9 - write 8 bytes
                       b - read/write 8 bytes

写个小栗子

#include <stdio.h>

void eee()
{
    printf("!%s\n", __FUNCTION__);
    }
void ddd()
{
    printf("!%s\n", __FUNCTION__);
    eee();
    }
void ccc()
{
    printf("!%s\n", __FUNCTION__);
    ddd();
    }
void bbb()
{
    printf("!%s\n", __FUNCTION__);
    ccc();
    }
void aaa()
{
    printf("!%s\n", __FUNCTION__);
    bbb();
    }

用它来试试这个dbgLib的操作

先加个断点，例如在bbb()的位置