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This patch adds instruction generator for ARM64 based on the descriptions
provided as part of Go's arm64asm package. It also implements support for
pseudo-instructions for calling ARM64 hypercalls.
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ifuzzimpl is too lenghty and too clumsy on my taste
(nm/vmimpl worked better b/c it's shorter and used less).
I've tried to come up with something shorter and nicer.
We could use "insn" as a common name for "instruction" in ifuzz,
but it's a commonly used name already so would cause lots of conflicts.
"iset" is somewhat descriptive, short and nice.
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ifuzzimpl imports the public interface package ifuzz
and prog package needs to import ifuzzimpl (implementation guts that
nobody outside of ifuzz should care about). This is not right.
Invert everything so that prog package only needs to import ifuzz
and ifuzz imports ifuzzimpl.
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This adds KVM's syz_kvm_setup_cpu pseudo syscall. This adds placeholder
for options (none implemented yet).
This adds instruction generator for ifuzz; this also adds a few pseudo
instructions to simulate super/hyper/ultracalls
(a PPC64/pseries platform thing).
The insns.go is generated from PowerISA_public.v3.0B.pdf [1] by
a horrendous python3 script on top of pdftotext. The ISA covers POWER9
which is the latest available POWER CPU at the moment. The next ISA
for POWER10 is quite different and we will deal with it later.
The // comment after every instruction is a fixed opcode list for
verification purposes.
This does not define DecodeExt as there is no obvious replacement of
the Intel XED library for POWERPC (gapstone-capstone, later, may be).
[1] https://openpowerfoundation.org/?resource_lib=power-isa-version-3-0
Signed-off-by: Alexey Kardashevskiy <aik@linux.ibm.com>
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At the moment ifuzz only generates x86 instructions. In order to support
instruction fuzzing for others (ARM, POWERPC), some separation of
the common and arch layers is needed.
This adds 2 packages:
1. "x86" where x86 instruction generator goes to
2. "ifuzzimpl which contains some common code.
The goal was to keep changes to the rand.go to the minimum.
The next patch will use this when adding PPC64.
This should cause no behavioural change.
Signed-off-by: Alexey Kardashevskiy <aik@linux.ibm.com>
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Fix capitalization, dots at the end
and two spaces after a period.
Update #1876
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This just cleans up existing warnings.
vetshadow is not enabled yet because it crashes.
Update #538
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This helps to ignore generated code with gometalinter.
There is currently no other way:
https://github.com/alecthomas/gometalinter/issues/270
Update #538
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Not tested, but const extraction and build works.
Update #324
Update #191
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