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4 Commits

Author SHA1 Message Date
Jon Medhurst
46589e2922 ARM: 7174/1: Fix build error in kprobes test code on Thumb2 kernels 
When compiling kprobes-test-thumb.c an error like below may occur:

/tmp/ccKcuJcG.s:19179: Error: offset out of range

This is caused by the compiler underestimating the size of the inline
assembler instructions containing ".space 0x1000" and failing to spill
the literal pool in time to prevent the generation of PC relative load
instruction with invalid offsets.

The fix implemented by this patch is to replace a single large .space
directive by a number of 4 byte .space's. This requires splitting the
macros which generate test cases for branch instructions into two forms:
one with, and one without support for inserting extra code between
branch and target.

Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
Signed-off-by: Jon Medhurst <jon.medhurst@linaro.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
 2011-11-26 21:58:53 +00:00
Jon Medhurst
c0cc6df163 ARM: kprobes: Add ARM instruction simulation test cases 
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
 2011-09-20 18:17:43 +00:00
Jon Medhurst
c7054aad53 ARM: kprobes: Add Thumb instruction simulation test cases 
Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
 2011-09-20 18:17:43 +00:00
Jon Medhurst
a43bc69b39 ARM: kprobes: Framework for instruction set test cases 
On ARM we have to simulate/emulate CPU instructions in order to
singlestep them. This patch adds a framework which can be used to
construct test cases for different instruction forms. It is described in
detail in the in-source comments of kprobes-test.c

Signed-off-by: Jon Medhurst <tixy@yxit.co.uk>
Acked-by: Nicolas Pitre <nicolas.pitre@linaro.org>
 2011-09-20 18:17:43 +00:00