Commit Graph

8 Commits

Author SHA1 Message Date
David A. Long b4cd605ca9 ARM: Make arch_specific_insn a define for new arch_probes_insn structure
Because the common underlying code for ARM kprobes and uprobes needs
to share a common architecrure-specific context structure, and because
the generic kprobes include file insists on defining this to a dummy
structure when kprobes is not configured, a new common structure is
required which can exist when uprobes is configured without kprobes.
In this case kprobes will define a dummy structure, but without the
define aliasing the two structure tags it will not affect uprobes and
the shared probes code.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
2014-03-18 16:39:40 -04:00
David A. Long 602cd2609e ARM: Add an emulate flag to the kprobes/uprobes instruction decode functions
Add an emulate flag into the instruction interpreter, primarily for uprobes
support.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
2014-03-18 16:39:39 -04:00
David A. Long 47e190fafd ARM: Change the remaining shared kprobes/uprobes symbols to something generic
Any more ARM kprobes/uprobes symbols which have "kprobe" in the name must be
changed to the more generic "probes" or other non-kprobes specific symbol.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
2014-03-18 16:39:39 -04:00
David A. Long 44a0a59c53 ARM: Rename the shared kprobes/uprobe return value enum
Change the name of kprobes_insn to probes_insn so it can be shared between
kprobes and uprobes without confusion.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
2014-03-18 16:39:38 -04:00
David A. Long f145d664df ARM: Make the kprobes condition_check symbol names more generic
In preparation for sharing the ARM kprobes instruction interpreting
code with uprobes, make the symbols names less kprobes-specific.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
2014-03-18 16:39:37 -04:00
David A. Long 7579f4b376 ARM: Remove use of struct kprobe from generic probes code
Change the generic ARM probes code to pass in the opcode and architecture-specific
structure separately instead of using struct kprobe, so we do not pollute
code being used only for uprobes or other non-kprobes instruction
interpretation.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
2014-03-18 16:39:37 -04:00
David A. Long 3e6cd394bb ARM: use a function table for determining instruction interpreter action
Make the instruction interpreter call back to semantic action functions
through a function pointer array provided by the invoker.  The interpreter
decodes the instructions into groups and uses the group number to index
into the supplied array.  kprobes and uprobes code will each supply their
own array of functions.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
2014-03-18 16:39:36 -04:00
David A. Long 87abef63ea ARM: move generic thumb instruction parsing code to new files for use by other feature
Move the thumb version of the kprobes instruction parsing code into more generic
files from where it can be used by uprobes and possibly other subsystems. The
symbol names will be made more generic in a subsequent part of this patchset.

Signed-off-by: David A. Long <dave.long@linaro.org>
Acked-by: Jon Medhurst <tixy@linaro.org>
2014-03-18 16:39:36 -04:00