aarch64 - Update gdb python to use ARMv8 registers

[swalk-cavium]

This updates the register usage so these macros can be used on ARMv8 hosts.

[swalk-cavium]

@mxw - Hi Max, Can you review? These changes allow the C++/PHP stack walk to work. Evidence below.

cat t | cut -c1-100
(gdb) walkstk
#0 {inline frame} @ 0x072b4148: HPHP::jit::tc::addrToOffset() at /mnt/cdn/hhvm/play.083017a/hhvm/hp
#1 0xffffffffced0 @ 0x072b4148: HPHP::jit::FixupMap::(anonymous namespace)::getFrameRegs() at /mnt/
#2 0xffffffffcf60 @ 0x072b45b8: HPHP::jit::FixupMap::fixupWork() at /mnt/cdn/hhvm/play.083017a/hhvm
#3 0xffffffffcfe0 @ 0x072b48a8: HPHP::jit::detail::syncVMRegsWork() at /mnt/cdn/hhvm/play.083017a/h
#4 0xffffffffd040 @ 0x063bef48: HPHP::jit::syncVMRegs() at /mnt/cdn/hhvm/play.083017a/hhvm/hphp/run
#5 0xffffffffd050 @ 0x063bef84: HPHP::VMRegAnchor::VMRegAnchor() at /mnt/cdn/hhvm/play.083017a/hhvm
#6 {inline frame} @ 0x05be1230: HPHP::ExecutionContext::invokeFuncImpl<HPHP::ExecutionContext::invo
#7 0xffffffffd070 @ 0x05be1230: HPHP::ExecutionContext::invokeFuncFew() at /mnt/cdn/hhvm/play.08301
#8 0xffffffffd1e0 @ 0x05c2b1f8: HPHP::ExecutionContext::invokeMethod() at /mnt/cdn/hhvm/play.083017
#9 0xffffffffd230 @ 0x05c2b254: HPHP::ExecutionContext::invokeMethodV() at /mnt/cdn/hhvm/play.08301
#10 {inline frame} @ 0x05c2b9e0: HPHP::invoke_destructor() at /mnt/cdn/hhvm/play.083017a/hhvm/hphp/r
#11 0xffffffffd290 @ 0x05c2b9e0: HPHP::ObjectData::destructImpl() at /mnt/cdn/hhvm/play.083017a/hhvm
#12 0xffffffffd3b0 @ 0x05c2c3c8: HPHP::ObjectData::releaseNoObjDestructCheck() at /mnt/cdn/hhvm/play
#13 0xffffffffd4c0 @ 0x05c2c878: HPHP::tail_call_remove_live_bc_obj() at /mnt/cdn/hhvm/play.083017a/
#14 0xffffffffd4e0 @ 0x05c2c920: HPHP::ObjectData::release() at /mnt/cdn/hhvm/play.083017a/hhvm/hphp
#15 0xffffacefff90 @ 0x14000228: [PHP] d::foo() at /mnt/cdn/hhvm/play.083017a/hhvm/hphp/test/quick/s
#16 0xffffacefffc0 @ 0x0f000954: [PHP] () at /mnt/cdn/hhvm/play.083017a/hhvm/hphp/test/q

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@swalk-cavium updated the pull request - view changes