Since we are always building with LFS enabled, in particular
with -D_FILE_OFFSET_BITS=64, we should always have struct flock
mapped to the 64bit variant (with off64_t), and F_GETLK mapped
to F_GETLK64 etc, automatically.
So there should be no need to explicitly use the "64" suffix
for these things anymore.
Also fix a misleading comment near safe_fcntl telling us to
always use flock64 (since v2.6.0-1311-g435da5e7092a "linux-user:
Use safe_syscall wrapper for fcntl").
Reference: https://gitlab.com/qemu-project/qemu/-/issues/2215
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
As per the deprecation notice in commit c7bbef4023:
The CRIS architecture was pulled from Linux in 4.17 and
the compiler is no longer packaged in any distro making
it harder to run the `check-tcg` tests. Unless we can
improve the testing situation there is a chance the code
will bitrot without anyone noticing.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Edgar E. Iglesias <edgar.iglesias@amd.com>
Message-ID: <20240904143603.52934-5-philmd@linaro.org>
Analyzing qemu-produced core dumps of multi-threaded apps runs into:
(gdb) info threads
[...]
21 Thread 0x3ff83cc0740 (LWP 9295) warning: Couldn't find general-purpose registers in core file.
<unavailable> in ?? ()
The reason is that all pr_pid values are the same, because the same
TaskState is used for all CPUs when generating NT_PRSTATUS notes.
Fix by using TaskStates associated with individual CPUs.
Cc: qemu-stable@nongnu.org
Fixes: 243c470662 ("linux-user/elfload: Write corefile elf header in one block")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-ID: <20240801202340.21845-1-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
For arm32 host and arm64 guest we get
.../main.c:851:32: error: result of comparison of constant 70368744177664 with expression of type 'unsigned long' is always false [-Werror,-Wtautological-constant-out-of-range-compare]
if (TASK_UNMAPPED_BASE < reserved_va) {
~~~~~~~~~~~~~~~~~~ ^ ~~~~~~~~~~~
We already disable -Wtype-limits here, for this exact comparison, but
that is not enough for clang. Disable -Wtautological-compare as well,
which is a superset. GCC ignores the unknown warning flag.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Akihiko Odaki <akihiko.odaki@daynix.com>
Message-Id: <20240630190050.160642-15-richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20240705084047.857176-20-alex.bennee@linaro.org>
This struct is unused since Peter's
Commit b8ae597f0e ("linux-user/sparc: Fix errors in target_ucontext
structures")
However, hmm, I'm a bit confused since that commit modifies the
structure and then removes it, was that intentional?
Signed-off-by: Dr. David Alan Gilbert <dave@treblig.org>
Reviewed-by: Michael Tokarev <mjt@tls.msk.ru>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
bsd-user: Baby Steps towards eliminating qemu_host_page_size, et al
First baby-steps towards eliminating qemu_host_page_size: tackle the reserve_va
calculation (which is easier to copy from linux-user than to fix).
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# gpg: aka "Warner Losh <imp@bsdimp.com>" [unknown]
# gpg: aka "Warner Losh <imp@freebsd.org>" [unknown]
# gpg: aka "Warner Losh <imp@village.org>" [unknown]
# gpg: aka "Warner Losh <wlosh@bsdimp.com>" [unknown]
# gpg: WARNING: This key is not certified with a trusted signature!
# gpg: There is no indication that the signature belongs to the owner.
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* tag 'bsd-user-misc-2024q2-pull-request' of gitlab.com:bsdimp/qemu:
bsd-user: Catch up to run-time reserved_va math
bsd-user: port linux-user:ff8a8bbc2ad1 for variable page sizes
linux-user: Adjust comment to reflect the code.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
If the user didn't specify reserved_va, there's an else for 64-bit host
32-bit (or fewer) target to reserve 32-bits of address space. Update the
comments to reflect this, and rejustify comment to 80 columns.
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Rearrange PDIST so that do_dddd is general purpose and may
be re-used for FMADDd etc. Add pickNaN and pickNaNMulAdd.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We have already validated the memory region in the course of
validating the signal frame. No need to do it again within
the helper function.
In addition, return failure when the header contains invalid
xstate_bv. The kernel handles this via exception handling
within XSTATE_OP within xrstor_from_user_sigframe.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We have already validated the memory region in the course of
validating the signal frame. No need to do it again within
the helper function.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
We have already validated the memory region in the course of
validating the signal frame. No need to do it again within
the helper function.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
For modern cpus, the kernel uses xsave to store all extra
cpu state across the signal handler. For xsave/xrstor to
work, the pointer must be 64 byte aligned. Moreover, the
regular part of the signal frame must be 16 byte aligned.
Attempt to mirror the kernel code as much as possible.
Use enum FPStateKind instead of use_xsave() and use_fxsr().
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1648
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Use the structure definition from target/i386/cpu.h.
The only minor quirk is re-casting the sw_reserved
area to the OS specific struct target_fpx_sw_bytes.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This is easily computed by advancing past the structure.
At the same time, replace the magic number "64".
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This is subtracting sizeof(target_fpstate_fxsave) in
TARGET_FXSAVE_SIZE, then adding it again via &fxsave->xfeatures.
Perform the same computation using xstate_size alone.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
qemu-sparc queue
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# gpg: Signature made Mon 06 May 2024 04:40:07 AM PDT
# gpg: using RSA key CC621AB98E82200D915CC9C45BC2C56FAE0F321F
# gpg: issuer "mark.cave-ayland@ilande.co.uk"
# gpg: Good signature from "Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>" [full]
* tag 'qemu-sparc-20240506' of https://github.com/mcayland/qemu:
target/sparc: Split out do_ms16b
target/sparc: Fix FPMERGE
target/sparc: Fix FMULD8*X16
target/sparc: Fix FMUL8x16A{U,L}
target/sparc: Fix FMUL8x16
target/sparc: Fix FEXPAND
linux-user/sparc: Add more hwcap bits for sparc64
hw/sparc64: set iommu_platform=on for virtio devices attached to the sun4u machine
docs/about: Deprecate the old "UltraSparc" CPU names that contain a "+"
docs/system/target-sparc: Improve the Sparc documentation
target/sparc/cpu: Avoid spaces by default in the CPU names
target/sparc/cpu: Rename the CPU models with a "+" in their names
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
While each user emulation implentation defines its own
TaskState structure, both use the same get_task_state()
declaration, in particular in common code (such gdbstub).
Declare the method once in "accel/tcg/vcpu-state.h".
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240428221450.26460-10-philmd@linaro.org>
Extract page-protection definitions from "exec/cpu-all.h"
to "exec/page-protection.h".
The list of files requiring the new header was generated
using:
$ git grep -wE \
'PAGE_(READ|WRITE|EXEC|RWX|VALID|ANON|RESERVED|TARGET_.|PASSTHROUGH)'
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Nicholas Piggin <npiggin@gmail.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240427155714.53669-3-philmd@linaro.org>
Declare 'have_guest_base' in "user/guest-base.h".
Very few files require this header, so explicitly include
it there instead of "exec/cpu-all.h" which is used in many
source files.
Assert this user-specific header is only included from user
emulation.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20231211212003.21686-23-philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
