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mgorny (Michał Górny)
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User Since
Aug 15 2016, 6:00 AM (232 w, 2 d)

Recent Activity

Yesterday

mgorny updated the diff for D95297: [lldb] [Process/FreeBSDRemote] Introduce arm64 support.

Remove unused copy-pasted class method declarations.

Wed, Jan 27, 7:01 AM

Mon, Jan 25

mgorny updated the diff for D95297: [lldb] [Process/FreeBSDRemote] Introduce arm64 support.

Removed unused REG_CONTEXT_SIZE.

Mon, Jan 25, 2:21 PM

Sat, Jan 23

mgorny requested review of D95297: [lldb] [Process/FreeBSDRemote] Introduce arm64 support.
Sat, Jan 23, 2:56 PM

Fri, Jan 22

mgorny added a comment to D67954: [LLDB] [Windows] Initial support for ARM64 register contexts.

Is there a specific reason you've only covered x0..x7 in the test?

Fri, Jan 22, 2:40 AM · Restricted Project, Restricted Project

Sun, Jan 17

mgorny added a comment to D94888: [lldb] Add -Wl,-rpath to make tests run with fresh built libc++.

You seem to be removing more than adding there.

Sun, Jan 17, 3:35 PM · Restricted Project

Tue, Jan 12

mgorny committed rG5aefc8dc4d14: [llvm] [cmake] Remove obsolete /usr/local hack for *BSD (authored by mgorny).
[llvm] [cmake] Remove obsolete /usr/local hack for *BSD
Tue, Jan 12, 10:26 AM
mgorny closed D94491: [llvm] [cmake] Remove obsolete /usr/local hack for *BSD.
Tue, Jan 12, 10:26 AM · Restricted Project
mgorny updated the diff for D94491: [llvm] [cmake] Remove obsolete /usr/local hack for *BSD.

Change the patch to remove the hack entirely.

Tue, Jan 12, 9:18 AM · Restricted Project
mgorny added a comment to D94491: [llvm] [cmake] Remove obsolete /usr/local hack for *BSD.

I can confirm that it builds fine without that block and that there are no changes in CMakeCache.txt.

Tue, Jan 12, 5:57 AM · Restricted Project
mgorny added reviewers for D94491: [llvm] [cmake] Remove obsolete /usr/local hack for *BSD: rnk, jrmarino.

Trying to add people responsible for the DragonFly part.

Tue, Jan 12, 5:38 AM · Restricted Project
mgorny added a comment to D94491: [llvm] [cmake] Remove obsolete /usr/local hack for *BSD.

What happens if you just drop this block unconditionally?

Tue, Jan 12, 5:04 AM · Restricted Project
mgorny requested review of D94491: [llvm] [cmake] Remove obsolete /usr/local hack for *BSD.
Tue, Jan 12, 4:47 AM · Restricted Project

Wed, Jan 6

mgorny committed rGb9bfe8a75306: [lldb] [debugserver] Add stN aliases for stmmN for compatibility (authored by mgorny).
[lldb] [debugserver] Add stN aliases for stmmN for compatibility
Wed, Jan 6, 5:11 PM
mgorny closed D91847: [lldb] [debugserver] Add stN aliases for stmmN for compatibility.
Wed, Jan 6, 5:11 PM · Restricted Project
mgorny added a comment to D91847: [lldb] [debugserver] Add stN aliases for stmmN for compatibility.

I suppose this has waited long enough to deserve another test run.

Wed, Jan 6, 3:48 PM · Restricted Project

Sat, Jan 2

mgorny committed rGd5317b41c585: [Process/NetBSD] Copy changes from FreeBSDRemote and reformat (authored by mgorny).
[Process/NetBSD] Copy changes from FreeBSDRemote and reformat
Sat, Jan 2, 10:15 AM
mgorny closed D93541: [Process/NetBSD] Copy changes from FreeBSDRemote and reformat.
Sat, Jan 2, 10:15 AM · Restricted Project

Dec 21 2020

mgorny updated the diff for D93541: [Process/NetBSD] Copy changes from FreeBSDRemote and reformat.

Fixed FPR writing bug, updated tests and removed anonymous namespace.

Dec 21 2020, 2:24 PM · Restricted Project
mgorny committed rGbd2e83333ece: [lldb] [Process/FreeBSDRemote] Remove anonymous namespace (authored by mgorny).
[lldb] [Process/FreeBSDRemote] Remove anonymous namespace
Dec 21 2020, 1:27 PM

Dec 20 2020

mgorny added inline comments to D93541: [Process/NetBSD] Copy changes from FreeBSDRemote and reformat.
Dec 20 2020, 3:47 AM · Restricted Project
mgorny committed rG99562332e3de: [lldb] [test] Update test status for NetBSD (authored by mgorny).
[lldb] [test] Update test status for NetBSD
Dec 20 2020, 2:33 AM

Dec 18 2020

mgorny requested review of D93541: [Process/NetBSD] Copy changes from FreeBSDRemote and reformat.
Dec 18 2020, 7:11 AM · Restricted Project

Dec 17 2020

mgorny committed rG835f8de85089: [lldb] [Process/FreeBSDRemote] Use RegSetKind consistently [NFC] (authored by mgorny).
[lldb] [Process/FreeBSDRemote] Use RegSetKind consistently [NFC]
Dec 17 2020, 9:02 AM
mgorny committed rG9ead4e7b4a68: [lldb] [Process/FreeBSDRemote] Replace GetRegisterSetCount() (authored by mgorny).
[lldb] [Process/FreeBSDRemote] Replace GetRegisterSetCount()
Dec 17 2020, 9:02 AM
mgorny closed D93450: [lldb] [Process/FreeBSDRemote] Use RegSetKind consistently [NFC].
Dec 17 2020, 9:02 AM · Restricted Project
mgorny closed D93396: [lldb] [Process/FreeBSDRemote] Replace GetRegisterSetCount().
Dec 17 2020, 9:02 AM · Restricted Project
mgorny committed rG37f99a560652: [lldb] [unittests] Filter FreeBSD through CMake rather than #ifdef (authored by mgorny).
[lldb] [unittests] Filter FreeBSD through CMake rather than #ifdef
Dec 17 2020, 4:56 AM
mgorny committed rG56440359d093: [lldb] [unittests] Add tests for NetBSD register offsets/sizes (authored by mgorny).
[lldb] [unittests] Add tests for NetBSD register offsets/sizes
Dec 17 2020, 4:56 AM
mgorny closed D93299: [lldb] [unittests] Add tests for NetBSD register offsets/sizes.
Dec 17 2020, 4:56 AM · Restricted Project
mgorny requested review of D93450: [lldb] [Process/FreeBSDRemote] Use RegSetKind consistently [NFC].
Dec 17 2020, 4:14 AM · Restricted Project
mgorny updated the diff for D93299: [lldb] [unittests] Add tests for NetBSD register offsets/sizes.

Made sources conditional to platform via CMake. If this is good, I'll update FreeBSD afterwards.

Dec 17 2020, 2:30 AM · Restricted Project
mgorny committed rGdbfdb139f754: [lldb] [POSIX-DYLD] Update the cached exe path after attach (authored by mgorny).
[lldb] [POSIX-DYLD] Update the cached exe path after attach
Dec 17 2020, 12:32 AM
mgorny committed rG8666b9057f23: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit (authored by mgorny).
[lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit
Dec 17 2020, 12:32 AM
mgorny closed D92264: [lldb] [POSIX-DYLD] Update the cached exe path after attach.
Dec 17 2020, 12:31 AM · Restricted Project
mgorny closed D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.
Dec 17 2020, 12:31 AM · Restricted Project
mgorny added inline comments to D93299: [lldb] [unittests] Add tests for NetBSD register offsets/sizes.
Dec 17 2020, 12:29 AM · Restricted Project

Dec 16 2020

mgorny requested review of D93396: [lldb] [Process/FreeBSDRemote] Replace GetRegisterSetCount().
Dec 16 2020, 6:54 AM · Restricted Project

Dec 15 2020

mgorny requested review of D93299: [lldb] [unittests] Add tests for NetBSD register offsets/sizes.
Dec 15 2020, 7:16 AM · Restricted Project

Dec 14 2020

mgorny updated the diff for D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

Compare using weak_ptr to the interpreter module.

Dec 14 2020, 4:46 AM · Restricted Project

Dec 13 2020

mgorny added a comment to D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

Another fix: we should only unload duplicate ld.so if it's actually a duplicate, i.e. the path differs. Otherwise, we've ended up unloading the only copy.

Would comparing the module shared_pointers work? I think that's exactly what we want here. I think it's possible for LoadModuleAtAddress to return the same module, even with paths which don't match exactly. But if it does that, then we will still end up unloading the original interpreter module...

Dec 13 2020, 2:43 PM · Restricted Project
mgorny committed rG0cd8686043f9: [lldb] [Process/FreeBSD] Add more 'override' keywords (authored by mgorny).
[lldb] [Process/FreeBSD] Add more 'override' keywords
Dec 13 2020, 12:59 AM

Dec 12 2020

mgorny updated the diff for D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

Another fix: we should only unload duplicate ld.so if it's actually a duplicate, i.e. the path differs. Otherwise, we've ended up unloading the only copy.

Dec 12 2020, 2:14 PM · Restricted Project

Dec 11 2020

mgorny updated the diff for D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

Updated to unload duplicate ld.so as suggested by @labath.

Dec 11 2020, 5:47 AM · Restricted Project

Dec 10 2020

mgorny updated the diff for D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

Avoid adding duplicate entry for ld-linux.

Dec 10 2020, 6:57 AM · Restricted Project
mgorny committed rG25c40a45999e: [lldb] [docs] Add a manpage for lldb-server (authored by mgorny).
[lldb] [docs] Add a manpage for lldb-server
Dec 10 2020, 6:03 AM
mgorny closed D92872: [lldb] [docs] Add a manpage for lldb-server.
Dec 10 2020, 6:03 AM · Restricted Project
mgorny added inline comments to D92872: [lldb] [docs] Add a manpage for lldb-server.
Dec 10 2020, 5:59 AM · Restricted Project
mgorny added a comment to D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

One possible hackaround would be to do this only if 1st breakpoint hit is consistent (vs add on Linux), or just make the whole logic #if defined(__FreeBSD__).

Dec 10 2020, 1:04 AM · Restricted Project
mgorny added a comment to D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

Actually, I can still reproduce the double symbol problem with Arch's ld-2.32.so. I can't figure out what's wrong.

Dec 10 2020, 1:03 AM · Restricted Project

Dec 8 2020

mgorny added a comment to D92872: [lldb] [docs] Add a manpage for lldb-server.

Nice!

Currently we have the lldb man page listed under "Reference" on the website. Do you think it would be worth creating a separate section for the man pages with lldb and lldb-server listed there? I thinking about adding a man page for debugserver as well.

Dec 8 2020, 11:50 AM · Restricted Project
mgorny added a comment to D92872: [lldb] [docs] Add a manpage for lldb-server.

This is half-guesswork since platform command seems to be undocumented, so I'd appreciate any suggestions what I got wrong.

Dec 8 2020, 10:58 AM · Restricted Project
mgorny requested review of D92872: [lldb] [docs] Add a manpage for lldb-server.
Dec 8 2020, 10:57 AM · Restricted Project

Dec 7 2020

mgorny updated the diff for D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

Updated to perform the logic inside DynamicLoaderPOSIXDYLD, without touching DYLDRendezvous. This is much safer, and does not cause the double-load of ld-linux.

Dec 7 2020, 10:33 AM · Restricted Project
mgorny reopened D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

This causes ld-linux to be added twice on Linux. I need to change the logic a bit.

Dec 7 2020, 7:18 AM · Restricted Project
mgorny added a reverting change for rG09b08833f301: [lldb] [POSIX-DYLD] Add libraries from initial eTakeSnapshot action: rG733e2ae8cdf3: Revert "[lldb] [POSIX-DYLD] Add libraries from initial eTakeSnapshot action".
Dec 7 2020, 6:59 AM
mgorny committed rG733e2ae8cdf3: Revert "[lldb] [POSIX-DYLD] Add libraries from initial eTakeSnapshot action" (authored by mgorny).
Revert "[lldb] [POSIX-DYLD] Add libraries from initial eTakeSnapshot action"
Dec 7 2020, 6:59 AM
mgorny added a reverting change for D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit: rG733e2ae8cdf3: Revert "[lldb] [POSIX-DYLD] Add libraries from initial eTakeSnapshot action".
Dec 7 2020, 6:59 AM · Restricted Project
mgorny updated the diff for D92264: [lldb] [POSIX-DYLD] Update the cached exe path after attach.

Rewritten the test wrt comments, that is:

  1. Added a breakpoint-continue to ensure that the program is past all initial work before we test it.
  2. Print a global variable to test it.
Dec 7 2020, 4:23 AM · Restricted Project
mgorny committed rGcf884c1035c7: [lldb] [test] Remove duplicate xfail for Testtypedef (authored by mgorny).
[lldb] [test] Remove duplicate xfail for Testtypedef
Dec 7 2020, 2:23 AM
mgorny added a comment to D92264: [lldb] [POSIX-DYLD] Update the cached exe path after attach.

I am having second thoughts about the image list approach to testing this. The regex matching is somewhat messy.

A bad load address should manifest itself in plenty of other ways.. Could we print the value of some global variable to check that we got the correct one?

Dec 7 2020, 1:50 AM · Restricted Project
mgorny committed rG77f0ea4b5b97: [lldb] [test] Fix continue_to_breakpoint() args in TestThreadStepOut (authored by mgorny).
[lldb] [test] Fix continue_to_breakpoint() args in TestThreadStepOut
Dec 7 2020, 12:57 AM
mgorny committed rG276638ecaf22: [lldb] [Process/FreeBSDRemote] Implement GetLoadedModuleFileSpec() and… (authored by mgorny).
[lldb] [Process/FreeBSDRemote] Implement GetLoadedModuleFileSpec() and…
Dec 7 2020, 12:57 AM
mgorny committed rG09b08833f301: [lldb] [POSIX-DYLD] Add libraries from initial eTakeSnapshot action (authored by mgorny).
[lldb] [POSIX-DYLD] Add libraries from initial eTakeSnapshot action
Dec 7 2020, 12:57 AM
mgorny committed rG1a1cc0ba7db5: [lldb] [Platform/POSIX] Use gdb-remote plugin when attaching (authored by mgorny).
[lldb] [Platform/POSIX] Use gdb-remote plugin when attaching
Dec 7 2020, 12:57 AM
mgorny closed D92746: [lldb] [test] Fix continue_to_breakpoint() args in TestThreadStepOut.
Dec 7 2020, 12:57 AM · Restricted Project
mgorny committed rG266c90fec899: [lldb] [test] Link FreeBSD test failures to bugs (authored by mgorny).
[lldb] [test] Link FreeBSD test failures to bugs
Dec 7 2020, 12:57 AM
mgorny closed D92314: [lldb] [Process/FreeBSDRemote] Implement GetLoadedModuleFileSpec() and GetFileLoadAddress().
Dec 7 2020, 12:57 AM · Restricted Project
mgorny closed D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.
Dec 7 2020, 12:57 AM · Restricted Project
mgorny closed D92667: [lldb] [Platform/POSIX] Use gdb-remote plugin when attaching.
Dec 7 2020, 12:57 AM · Restricted Project
mgorny closed D92740: [lldb] [test] Link FreeBSD test failures to bugs.
Dec 7 2020, 12:57 AM · Restricted Project
mgorny requested review of D92746: [lldb] [test] Fix continue_to_breakpoint() args in TestThreadStepOut.
Dec 7 2020, 12:33 AM · Restricted Project

Dec 6 2020

mgorny requested review of D92740: [lldb] [test] Link FreeBSD test failures to bugs.
Dec 6 2020, 3:36 PM · Restricted Project
mgorny updated the diff for D92314: [lldb] [Process/FreeBSDRemote] Implement GetLoadedModuleFileSpec() and GetFileLoadAddress().

Added an explanatory comment.

Dec 6 2020, 3:36 PM · Restricted Project
mgorny added a comment to D92314: [lldb] [Process/FreeBSDRemote] Implement GetLoadedModuleFileSpec() and GetFileLoadAddress().

No objection, but maybe add a comment explaining the status of this implementation? Does/will NetBSD do the same?

Dec 6 2020, 3:27 PM · Restricted Project

Dec 4 2020

mgorny updated the diff for D92264: [lldb] [POSIX-DYLD] Update the cached exe path after attach.

With D92667, I've finally found a way to reproduce this without running lldb-server explicitly — we need to spawn the program via relative path though. I've added a test that does that, and compares the address from image list with the one gotten after explicitly creating target via file path. This clearly reproduces the problem if you don't modify the sources (i.e. mismatch between 0x400000 and 0x200000).

Dec 4 2020, 3:41 PM · Restricted Project
mgorny added a comment to D85278: [lld] Support building shared libLLD.so.

From what I understand, linking lld as a shared library is an explicit non-goal of lld. It trusts inputs and crashes on bad inputs, since it's designed to be run as a separate process.

Can you say more about what you want this for? It seems like something we don't want to do.

Dec 4 2020, 3:37 PM · lld
mgorny added a comment to D92667: [lldb] [Platform/POSIX] Use gdb-remote plugin when attaching.

No objection here. I'm curious why the two modified tests work on Linux or NetBSD today though?

Dec 4 2020, 2:58 PM · Restricted Project
mgorny updated the diff for D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

Updated as discussed on IRC, to instead add libs returned by the first 'take snapshot' action.

Dec 4 2020, 11:14 AM · Restricted Project
mgorny requested review of D92667: [lldb] [Platform/POSIX] Use gdb-remote plugin when attaching.
Dec 4 2020, 9:54 AM · Restricted Project
mgorny added inline comments to D85278: [lld] Support building shared libLLD.so.
Dec 4 2020, 9:30 AM · lld
mgorny added a reviewer for D85278: [lld] Support building shared libLLD.so: thakis.

@thakis, you seem to have been touching lld recently.

Dec 4 2020, 12:58 AM · lld

Dec 1 2020

mgorny committed rGe1f613ce3c61: [lldb] [test] Reenable two passing tests on FreeBSD (authored by mgorny).
[lldb] [test] Reenable two passing tests on FreeBSD
Dec 1 2020, 2:26 PM
mgorny added a comment to D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

I've added some more debug as requested, and it confirmed that Linux and FreeBSD dyld are behaving differently here.

Linux triggers the breakpoint twice: first time in add state, including only /lib64/ld-linux-x86-64.so.2 and linux-vdso.so.1 in module list, and the second time in consistent state, adding soentries for all shared libraries.

FreeBSD triggers it only once, in consistent state and the remote list includes all libraries immediately

Thanks for investigating this. And I'm sorry for being so picky -- this is all very messy, and I am trying to understand things to avoid making an even bigger mess.

When you say "FreeBSD triggers it only once", which breakpoint are you referring to? The "rendezvous" breakpoint? Judging by the log's, I would say yes.

Dec 1 2020, 8:07 AM · Restricted Project
mgorny added a comment to D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

Full logs below.

Dec 1 2020, 4:06 AM · Restricted Project
mgorny added a comment to D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

I've added some more debug as requested, and it confirmed that Linux and FreeBSD dyld are behaving differently here.

Dec 1 2020, 4:05 AM · Restricted Project

Nov 30 2020

mgorny requested review of D92314: [lldb] [Process/FreeBSDRemote] Implement GetLoadedModuleFileSpec() and GetFileLoadAddress().
Nov 30 2020, 5:47 AM · Restricted Project
mgorny added a comment to D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

GDB indeed handles it somehow. I'm going to investigate.

Nov 30 2020, 2:58 AM · Restricted Project
mgorny added a comment to D92264: [lldb] [POSIX-DYLD] Update the cached exe path after attach.

Seems reasonable(ish), but needs a test case. Do you need to launch a separate server instance, or would just a plain attach work?

Nov 30 2020, 2:05 AM · Restricted Project
mgorny added a comment to D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.

What's the state of TestBreakpointInGlobalConstructor.py after this change? Does it continue to fail?

Nov 30 2020, 12:24 AM · Restricted Project

Nov 29 2020

mgorny added reviewers for D85278: [lld] Support building shared libLLD.so: espindola, grimar, atanasyan, MaskRay.
Nov 29 2020, 9:09 AM · lld

Nov 28 2020

mgorny requested review of D92264: [lldb] [POSIX-DYLD] Update the cached exe path after attach.
Nov 28 2020, 4:12 AM · Restricted Project

Nov 26 2020

mgorny requested review of D92187: [lldb] [POSIX-DYLD] Add libraries from initial rendezvous brkpt hit.
Nov 26 2020, 8:56 AM · Restricted Project
mgorny added a comment to D92063: [LLDB] RegisterInfoPOSIX_arm64 remove unused bytes from g/G packet.

I was referring to:

Nov 26 2020, 1:56 AM · Restricted Project
mgorny added a comment to D92063: [LLDB] RegisterInfoPOSIX_arm64 remove unused bytes from g/G packet.

I disagree. Since we're repeating gdb protocol, it would be nice to use offsets consistent with the gdb protocol, even if it means some extra padding. I do realize that this is broken right now and not trivially fixable but I don't think we should make things worse.

Nov 26 2020, 1:35 AM · Restricted Project
mgorny added a comment to D92063: [LLDB] RegisterInfoPOSIX_arm64 remove unused bytes from g/G packet.

+@mgorny, as he's been navigating these waters lately...

So... I presume we can't just slap __attribute__((packed)) on the structure, because the kernel actually expects that the data structure will have the extra space for the padding. Is that so?

Even if we can't, I'm wondering if it wouldn't be cleaner to use two structures for this. Something like:

LLVM_PACKED_START
struct GPR {
  // as before...
};
/// Big comment explaining the purpose of padding
struct GPRBuffer: GPR {
  uint32_t pad;
};
LLVM_PACKED_END

and then using GPR or GPRBuffer accordingly. What do you think?

Nov 26 2020, 12:24 AM · Restricted Project

Nov 23 2020

mgorny requested review of D91963: [lldb] [test/Register] Initial tests for regsets in core dumps [WIP].
Nov 23 2020, 6:55 AM
mgorny committed rGa8f6f4e8733c: [lldb] [test] Restore Windows-skip on 'process connect' tests (authored by mgorny).
[lldb] [test] Restore Windows-skip on 'process connect' tests
Nov 23 2020, 5:28 AM
mgorny updated the diff for D91847: [lldb] [debugserver] Add stN aliases for stmmN for compatibility.

Added system-debugserver feature to skip tests.

Nov 23 2020, 3:16 AM · Restricted Project
mgorny added a comment to D91847: [lldb] [debugserver] Add stN aliases for stmmN for compatibility.

Still looks good to me. :) Jason, do you have any concerns?

Unfortunately, we still need a @skipIfOutOfTreeDebugserver equivalent....

Nov 23 2020, 1:38 AM · Restricted Project
mgorny updated the diff for D91847: [lldb] [debugserver] Add stN aliases for stmmN for compatibility.

Rebase and fix TestRegisters.

Nov 23 2020, 1:37 AM · Restricted Project