Re: Incorrect order of last two arguments of ptrace for requests PPC_PTRACE_GETREGS, SETREGS, GETFPREGS, SETFPREGS
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2006-11-22 21:36:53
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On Wed, 2006-11-22 at 18:36 +0000, David Woodhouse wrote:
Onquoted
This is because PPC_PTRACE_GETREGS option for powerpc is implemented such that general purpose registers of the child process get copied to the address variable instead of data variable. Same is the case with other PPC request options PPC_PTRACE_SETREGS, GETFPREGS and SETFPREGS. Prepared a patch for this problem and tested with 2.6.18-rc6 kernel. This patch can be applied directly to 2.6.19-rc3 kernel.A more appropriate place to send this would be the linux-ppc development list.
Also it's possible that existing code like gcc relies on that "feature" no ? Ben.