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- Rewrite arch.Stack.{Push,Pop}. For the most part, stack now
implements marshal.CopyContext and can be used as the target of
marshal operations. Stack.Push had some extra logic for
automatically null-terminating slices. This was only used for two
specific types of slices, and is now handled explicitly.
- Delete usermem.CopyObject{In,Out}.
- Replace most remaining uses of the encoding/binary package with
go-marshal. Most of these were using the binary package to compute
the size of a struct, which go-marshal can directly replace. ~3 uses
of the binary package remain. These aren't reasonably replaceable by
go-marshal: for example one use is to construct the syscall
trampoline for systrap.
- Fill out remaining convenience wrappers in the primitive package.
PiperOrigin-RevId: 334502375
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PiperOrigin-RevId: 331940975
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PiperOrigin-RevId: 331256608
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Signed-off-by: Bin Lu <bin.lu@arm.com>
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This patch load/save TLS for the container application.
Related issue: full context-switch supporting for Arm64 #1238
COPYBARA_INTEGRATE_REVIEW=https://github.com/google/gvisor/pull/2761 from lubinszARM:pr_tls_2 cb5dbca1c9c3f378002406da7a58887f9b5032b3
PiperOrigin-RevId: 322887044
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We need to initialize an empty fp state area for the sentry.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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* Aggregate architecture Overview in "What is gVisor?" as it makes more sense
in one place.
* Drop "user-space kernel" and use "application kernel". The term "user-space
kernel" is confusing when some platform implementation do not run in
user-space (instead running in guest ring zero).
* Clear up the relationship between the Platform page in the user guide and the
Platform page in the architecture guide, and ensure they are cross-linked.
* Restore the call-to-action quick start link in the main page, and drop the
GitHub link (which also appears in the top-right).
* Improve image formatting by centering all doc and blog images, and move the
image captions to the alt text.
PiperOrigin-RevId: 311845158
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Signed-off-by: Bin Lu <bin.lu@arm.com>
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Signed-off-by: Bin Lu <bin.lu@arm.com>
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PiperOrigin-RevId: 308472331
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PiperOrigin-RevId: 308100771
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PiperOrigin-RevId: 306306809
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The comments in the ticket indicate that this behavior
is fine and that the ticket should be closed, so we shouldn't
need pointers to the ticket.
PiperOrigin-RevId: 306266071
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Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: I5bb8fa7d580d173b1438d6465e1adb442216c8fa
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The build tag for 32-bit x86 is 386, not i386.
Updates #2298
PiperOrigin-RevId: 304206373
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SA_RESTORER is always used on Intel platform.
But this flag is optional on other platforms.
The vdso is enabled, so we can use the sigreturn trampolines
the vdso provides instead on Arm platform.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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PiperOrigin-RevId: 301700868
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This issue was caused by 'restart_syscall'.
The value of Register R0 should be stored after finishing sysemu.
So that we can restore the value and restart syscall.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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Linux use the task.thread.uw.tp_value field to store the
TLS pointer on arm64 platform, and we use a similar way
in gvisor to store it in the arch/State struct.
Signed-off-by: Haibo Xu <haibo.xu@arm.com>
Change-Id: Ie76b5c6d109bc27ccfd594008a96753806db7764
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There is no cpuid instruction on arm64, so we need to defined it
just to avoid a compile time error.
Signed-off-by: Andrei Vagin <avagin@gmail.com>
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PiperOrigin-RevId: 297674924
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This patch defines the structures and
adds the implementations for fpsimd initialization.
Signed-off-by: Bin Lu <bin.lu@arm.com>
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Fixes #1708
Signed-off-by: Haibo Xu haibo.xu@arm.com
Change-Id: Ib15768692ead17c81c06f7666ca3f0a14064c3a0
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