Re: [patch] Relocate phdr in read_program_header

Aleksandar Ristovski
2011-10-12T18:50:33Z

ping?

On 11-09-30 03:31 PM, Aleksandar Ristovski wrote:
> Hello,
>
> When attaching to a process without the executable file, gdb reads
> pheaders from the target (solib-svr4.c: read_program_header).
>
> However, it does not take into account possibility of having PIE
> executable on the other end, resulting in trying to read from
> unrelocated phdr address.
>
> This patch addresses the issue by looking for PT_PHDR; if found, uses it
> to determine relocation and adjusts address before reading it from
> target memory.
>
> Testsuite on x86_64-unknown-linux-gnu did not show any regressions.
>
>
> Thanks,
>
>
> Aleksandar Ristovski
> QNX Software Systems
>
>
>
> ... Aleksandar Ristovski <aristovski@qnx.com>
>
> * solib-svr4.c (read_program_header): If PT_PHDR is present, use it
> to calculate correct address in case of PIE.
>