CODEWITHSUNDEEP
cgdb
Bhubhu Hbuhdbus
Bhubhu Hbuhdbus

Reputation: 1519

gdb disassemble by line number

Say I want to disassemble lines m-n of file x, where file x is not in the current context. Is this operation possible, and if so, how? Note: I am working on x86 Linux.

Upvotes: 5

Views: 7336

Answers (3)

xealits
xealits

Reputation: 4556

As a quite late and maybe redundant answer, but hopefully useful for someone like me, I would like to put together a complete response to this and your other question on getting the address of a line number.

The disassemble command can disassemble address ranges: disassemble [Start],[End]. But you want to disassemble line ranges.

To get the addresses of the source code lines you can use the info line command: info line [File]:[Line].

Upvotes: 3

undercat
undercat

Reputation: 548

You can use the disassemble command with the /m key to display original C lines in front of their assembly counterparts:

disassemble /m 'my_file.c'::my_function

This does not require any preliminary steps, although it doesn't seem to accept source line ranges as you asked.

Upvotes: 9

Alan Curry
Alan Curry

Reputation: 14721

Here's a kludgy way to do it: set a breakpoint on the line you're interested in, and the breakpoint acknowledgement gives you an address. Then clear the breakpoint and run disas or x/20i on that address.

Upvotes: 1

Related Questions