[POWERPC] Make syscall restart code more common

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This patch moves the code in signal_32.c and signal_64.c for handling
syscall restart into a common signal.c file and converge around a single
implementation that is based on the 32 bits one, using trap, ccr
and r3 rather than the special "result" field for deciding what to do.

The "result" field is now pretty much deprecated. We still set it for
the sake of whatever might rely on it in userland but we no longer use
it's content.

This, along with a previous patch that enables ptracers to write to
"trap" and "orig_r3" should allow gdb to properly handle syscall
restarting.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>

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This commit is contained in:

Benjamin Herrenschmidt 2007-06-04 15:15:49 +10:00 • committed by Paul Mackerras

parent 791cc501d4

commit 22e38f2932

5 changed files with 94 additions and 77 deletions

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3

arch/powerpc/kernel/Makefile

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65

arch/powerpc/kernel/signal.c

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16

arch/powerpc/kernel/signal.h

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28

arch/powerpc/kernel/signal_32.c

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59

arch/powerpc/kernel/signal_64.c

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