Re: Reverse debugging

[nickrob at snap dot net dot nz (Nick Roberts)]

 > That's because target exec does not support reverse,
 > but target record does.  Reverse is also potentially
 > supported under target remote, depending on what remote
 > target you're connected to.
 > 
 > > In the "Reverse Execution" node of the GDB manual it talks about
 > > "a target environment that supports reverse execution" but doesn't clarify
 > > what those targets are.  The node "Process Record and Replay" comes next
 > > in the manual but these two seem to be inimately related.
 > 
 > Process record (target record) is one of a small number of
 > targets that currently support reverse debugging.  The others,
 > so far, are all remote targets (eg. SID from Red Hat, and
 > Simics from Virtutech).
 >...

Thanks for these answers, I find them more lucid than the manual.  If I try
to reverse a remote target using gdbserver (actually on host/local machine -
x86_64 this time), I'm not told that the target doesn't support this command
but reverse-next works just like next until I hit a function:

(gdb) reverse-next

Program received signal SIGTRAP, Trace/breakpoint trap.
0x0000000000400521 in printf@plt ()
Current language:  auto; currently asm
(gdb) 

-- 
Nick                                           http://www.inet.net.nz/~nickrob