[Valgrind-developers] Syscall pre_mem_read context

[Siddharth N. <si...@gm...>]

Hi All,

I am trying to instrument syscalls that read from and modify memory. I
want to use the pre_mem_read and post_mem_write functions, but I also
need the correct function execution context when the read and write
occurs (user program function where the syscall occurs).

So my idea was to use Callgrind, record all pre_mem_reads and query
the context during the next syscall and similarly during
post_mem_writes query the context of the previous syscall that has
occurred. I couldn't find any documentation on how pre_mem_read
functions work in conjunction with syscalls. Am I going about this
right?

Thanks,
Siddharth