We're about to move a lot of the code in qemu.h out into different
header files; fix the coding style nits first so that checkpatch
is happy with the pure code-movement patches. This is mostly
block-comment style but also a few whitespace issues.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210908154405.15417-2-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Passing arguments to plugins had to be done through "arg=<argname>".
This is redundant and introduces confusion especially when the argument
has a name and value (e.g. `-plugin plugin_name,arg="argname=argvalue"`).
This allows passing plugin arguments directly e.g:
`-plugin plugin_name,argname=argvalue`
For now, passing arguments through "arg=" is still supports but outputs
a deprecation warning.
Also, this commit makes boolean arguments passed to plugins in the
`argname=on|off` form instead of the deprecated short-boolean form.
Signed-off-by: Mahmoud Mandour <ma.mandourr@gmail.com>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20210730135817.17816-2-ma.mandourr@gmail.com>
Currently we rely on all the callsites of cpsr_write() to rebuild the
cached hflags if they change one of the CPSR bits which we use as a
TB flag and cache in hflags. This is a bit awkward when we want to
change the set of CPSR bits that we cache, because it means we need
to re-audit all the cpsr_write() callsites to see which flags they
are writing and whether they now need to rebuild the hflags.
Switch instead to making cpsr_write() call arm_rebuild_hflags()
itself if one of the bits being changed is a cached bit.
We don't do the rebuild for the CPSRWriteRaw write type, because that
kind of write is generally doing something special anyway. For the
CPSRWriteRaw callsites in the KVM code and inbound migration we
definitely don't want to recalculate the hflags; the callsites in
boot.c and arm-powerctl.c have to do a rebuild-hflags call themselves
anyway because of other CPU state changes they make.
This allows us to drop explicit arm_rebuild_hflags() calls in a
couple of places where the only reason we needed to call it was the
CPSR write.
This fixes a bug where we were incorrectly failing to rebuild hflags
in the code path for a gdbstub write to CPSR, which meant that you
could make QEMU assert by breaking into a running guest, altering the
CPSR to change the value of, for example, CPSR.E, and then
continuing.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210817201843.3829-1-peter.maydell@linaro.org
From clang-13:
linux-user/syscall.c:8503:17: error: variable 'total_size' set but not used \
[-Werror,-Wunused-but-set-variable]
Acked-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
In user-mode emulation there is a small race between preexit_cleanup
and exit_group() which means we may end up calling instrumented
instructions before the kernel reaps child threads. To solve this we
implement a new helper which ensures the callbacks are flushed along
with any translations before we let the host do it's a thing.
While we are at it make the documentation of
qemu_plugin_register_atexit_cb clearer as to what the user can expect.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Mahmoud Mandour <ma.mandourr@gmail.com>
Acked-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20210720232703.10650-21-alex.bennee@linaro.org>
Use it to avoid some clang-12 -Watomic-alignment errors,
forcing some structures to be aligned and as a pointer when
we have ensured that the address is aligned.
Tested-by: Cole Robinson <crobinso@redhat.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Convert the host_to_target_errno_table[] array to a switch
case to allow compiler optimizations (such noticing the identity
function when host and guest errnos match). Extract the errnos
list as to a new includible unit, using a generic macro. Remove
the code related to target_to_host_errno_table[] initialization.
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210708170550.1846343-8-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
We want to access the target errno indepently of the rest of the
linux-user code. Move the header containing the generic errno
definitions ('errno_defs.h') to 'generic/target_errno_defs.h',
create a new 'target_errno_defs.h' in each target which itself
includes 'generic/target_errno_defs.h'.
Suggested-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210708170550.1846343-4-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
We want to have one generic target_errno.h (API to access target
errno), and will add target errno definitions in target_errno_defs.h.
The sparc target already have its errnos in an header, simply rename
it.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210708170550.1846343-3-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Linux-user pull request 20210621
# gpg: Signature made Mon 21 Jun 2021 12:03:53 BST
# gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C
# gpg: issuer "laurent@vivier.eu"
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C
* remotes/vivier2/tags/linux-user-for-6.1-pull-request:
linux-user: Use public sigev_notify_thread_id member if available
linux-user: Fix incorrect use of feature-test-macros
linux-user: Check for ieee128 fpbits in PPC64 HWCAP2 feature list
tests/tcg/linux-test: Check that sigaction can query SIGKILL/SIGSTOP
linux-user: Let sigaction query SIGKILL/SIGSTOP
linux-user: Implement pivot_root
linux-user/trace-events: fix minor typo in format string
linux-user: Disable static assert involving __SIGRTMAX if it is missing
linux-user: Set CF_PARALLEL when mapping shared memory
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
The _POSIX_C_SOURCE and _XOPEN_SOURCE macros are used by the
application to indicate to libc which declarations it should expose.
Since qemu does not define them anywhere, it does not make sense
to check their value.
Instead, since the intent is to determine whether the host struct
stat supports the st_*tim fields, use the configure test result
which does exactly that.
Signed-off-by: Michael Forney <mforney@mforney.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210526035531.7871-1-mforney@mforney.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This check is to ensure that the loop in signal_table_init() from
SIGRTMIN to SIGRTMAX falls within the bounds of host_to_target_signal_table
(_NSIG). However, it is not critical, since _NSIG is already defined
to be the one larger than the largest signal supported by the system
(as specified in the upcoming POSIX revision[0]).
musl libc does not define __SIGRTMAX, so disabling this check when
it is missing fixes one of the last remaining errors when building
qemu.
[0] https://www.austingroupbugs.net/view.php?id=741
Signed-off-by: Michael Forney <mforney@mforney.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210526190203.4255-1-mforney@mforney.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Instead of delaying tcg_region_init until after tcg_prologue_init
is complete, do tcg_region_init first and let tcg_prologue_init
shrink the first region by the size of the generated prologue.
Reviewed-by: Luis Pires <luis.pires@eldorado.org.br>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Commit e50caf4a5c ("tracing: convert documentation to rST")
converted docs/devel/tracing.txt to docs/devel/tracing.rst.
We still have several references to the old file, so let's fix them
with the following command:
sed -i s/tracing.txt/tracing.rst/ $(git grep -l docs/devel/tracing.txt)
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210517151702.109066-2-sgarzare@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
