On Thursday 11 February 2010 19:39:50 David Miller wrote: > From: Mike Frysinger <vapier@xxxxxxxxxx> > > when i ported the Blackfin code to the tracehook framework, i copied a > > latent bug from the sparc port. trying to trace another process while > > handling signals no longer worked (and subsequently broke some of the gdb > > tests). > > What you seem to be missing is that on Sparc TIF_SINGLESTEP will never > be set, because it does not support hardware single step. > > This thread flag is not even defined on that platform. my point is that these arches never call ptrace_notify(SIGTRAP) from their signal handlers. maybe the arch is unable to due to some port/hardware limitation and this is currently the expected behavior. dont get me wrong ... i dont particularly care if your arch has a bug in it here. my arch did have a bug and on the off chance that others did too, i thought i'd drop an e-mail to people. if your arch is in the "limited" category, feel free to ignore this. -mike
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