Re: [Valgrind-developers] headaches abound.. platform support

[Tom H. <to...@co...>]

On 10/06/2025 00:30, John Reiser wrote:
>> It looks like just about every platform except alpha is supported, so 
>> how much work is it to get a new platform supported (not sure how much 
>> needs to be added/modified)?
> 
> Choose a supported $ARCH with 64-bit words and fixed-width instructions:
> 
>     $ grep -i arm64 $(find valgrind -name '*.[ch]')  |  wc -l
>     5214
> 
> So that's an estimate of how much you have to add/modify.
> Of course not all of it must be done "by hand", but still
> there probably are a couple thousand lines of code.

That's also a serious underestimate as there are whole files that
are processor specific, like the basic CPU emulation:

     595 VEX/priv/guest_amd64_defs.h
    4938 VEX/priv/guest_amd64_helpers.c
   32801 VEX/priv/guest_amd64_toIR.c
    4344 VEX/priv/host_amd64_defs.c
     875 VEX/priv/host_amd64_defs.h
    5461 VEX/priv/host_amd64_isel.c
   49014 total

and OS interfaces:

   319 coregrind/m_dispatch/dispatch-amd64-linux.S
   606 coregrind/m_sigframe/sigframe-amd64-linux.c
   253 coregrind/m_syswrap/syscall-amd64-linux.S
   915 coregrind/m_syswrap/syswrap-amd64-linux.c
  2093 total

Tom

-- 
Tom Hughes (to...@co...)
http://compton.nu/