powerpc: Fix ptrace compat wrapper for FPU register access

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The ptrace compat wrapper mishandles access to the fpu registers.  The
PTRACE_PEEKUSR and PTRACE_POKEUSR requests miscalculate the index into
the fpr array due to the broken FPINDEX macro.  The
PPC_PTRACE_PEEKUSR_3264 request needs to use the same formula that the
native ptrace interface uses when operating on the register number (as
opposed to the 4-byte offset).  The PPC_PTRACE_POKEUSR_3264 request
didn't take TS_FPRWIDTH into account.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Michael Neuling <mikey@neuling.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

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Michael Neuling 2009-04-05 20:59:39 +00:00 • committed by Paul Mackerras

parent c7d07fdd5a

commit bc826666e4

1 changed files with 11 additions and 4 deletions

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arch/powerpc/kernel/ptrace32.c

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