gdb:在source和asm中显示相应的行 [英] gdb: show corresponding lines in source and asm

问题描述

在TUI模式下运行gdb时，显示源代码和汇编代码，是否可以突出显示映射到选定源代码行的指令集?

解决方案

您可以使用GDB仪表板部分完成它.

When running gdb in TUI mode, showing source and assembly, is there an option to highlight the set of instructions mapping to a selected source line?

解决方案

You can partially do it with GDB Dashboard.

https://github.com/cyrus-and/gdb-dashboard

From below screenshot you can see that the 1st call to operator<< in this line of code:

std::cout << a << std::endl;

is mapped to 4 assembly instructions:

0x00000000004011a2  main()+28 mov    -0x4(%rbp),%eax
0x00000000004011a5  main()+31 mov    %eax,%esi
0x00000000004011a7  main()+33 mov    $0x404060,%edi
0x00000000004011ac  main()+38 callq  0x401070 <_ZNSolsEi@plt>

They are highlighted with green color in Assembly section.

You can move to 2nd call to operator<< in the same line executing ni command several times and you will see the second mapping to 3 assembly instructions:

0x00000000004011b1  main()+43 mov    $0x401030,%esi
0x00000000004011b6  main()+48 mov    %rax,%rdi
0x00000000004011b9  main()+51 callq  0x401050 <_ZNSolsEPFRSoS_E@plt>

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