ARM: make it one-personality arch

ARM in fact _is_ one personality.

We had two personalities for it because it has a handful of
syscalls with huge scnos (0x000f00xx).

Extending syscall table to have [0x000f0005] index is of course
not a good idea.

Someone decided to handle that by having a separate personality
just for these syscalls.

But multi-personality arch does a bit more work in other parts.

This patch is another alternative: "move" 0x000f00nn syscalls
down to the entries just above last ordinary syscall,
by manipulating scno if it falls into the 0x000f00xx range.

In order to not worsen genuine undefined scnos' printing,
the code remaps scno back to actual value before printing
"syscall_NNN" string.

* defs.h: Remove multi-reprsonality defines from ARM.
* syscall.c (shuffle_scno): New function.
(undefined_scno_name): New function.
(get_scno): [ARM] Replace personality setting with scno shuffling.
(trace_syscall_entering): Print unknown syscall name using
undefined_scno_name().
(trace_syscall_exiting): Likewise.
* linux/arm/syscallent.h: Add ARM specific syscalls at the end.
* linux/arm/errnoent1.h: Deleted.
* linux/arm/ioctlent1.h: Deleted.
* linux/arm/signalent1.h: Deleted.
* linux/arm/syscallent1.h: Deleted.

Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>

1 files changed, 1 insertions, 3 deletions

diff --git a/defs.h b/defs.h
index 8f39712..fc8f8e7 100644
--- a/defs.h
+++ b/defs.h
@@ -318,9 +318,7 @@ struct arm_pt_regs {
 #endif
 
 #ifdef ARM
-# define SUPPORTED_PERSONALITIES 2
-# define PERSONALITY0_WORDSIZE 4
-# define PERSONALITY1_WORDSIZE 4
+/* one personality */
 #endif
 
 #ifdef AARCH64