CODEWITHSUNDEEP
gdb
satveer singh
satveer singh

Reputation: 13

How to specify an offset with add-symbol-file command which get added to all sections in gdb

I have one shared object file which gets loaded in memory dynamically using add-symbol-file in gdb.

gdb) add-symbol-file shared.so 0x1234

Doing this .text section loaded at 0x1234 memory. We can specify a section-specific address also. Can we specify of offset which can get added to all section addresses?

Similar like --slide in lldb debugger. which slides LOAD address by offset.

Upvotes: 0

Views: 1617

Answers (1)

Employed Russian
Employed Russian

Reputation: 213375

I have one shared object file which gets loaded in memory dynamically

On most platforms, whey you dynamically load a shared object (e.g. via dlopen), GDB will automatically add symbols from it without the need to add-symbol-file.

If that isn't happening, you should describe your platform, and the mechanism by which the shared object gets loaded.

Can we specify of offset which can get added to all section addresses?

Yes.

Assuming the shared object was added with relocation 0x123456000, and that the .text section in that shared object starts at offset 0xabcd, add-symbol-file 0x123456000+0xabcd will do exactly what you want.

Upvotes: 0

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