Like TARGET_NR_setuid, TARGET_NR_setgroups should affect only the
calling thread, and not the entire process. Therefore, implement it
using a syscall, and not a libc call.
Cc: qemu-stable@nongnu.org
Fixes: 19b84f3c35 ("added setgroups and getgroups syscalls")
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-Id: <20240614154710.1078766-1-iii@linux.ibm.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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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Merge tag 'bsd-user-misc-2024q2-pull-request' of gitlab.com:bsdimp/qemu into staging
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: Signature made Sun 09 Jun 2024 09:55:52 AM PDT
# gpg: using RSA key 2035F894B00AA3CF7CCDE1B76C1CD1287DB01100
# gpg: Good signature from "Warner Losh <wlosh@netflix.com>" [unknown]
# 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.
# Primary key fingerprint: 2035 F894 B00A A3CF 7CCD E1B7 6C1C D128 7DB0 1100
* 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>
The Hexagon Programmer's Reference Manual says that the exception 0x1e
should be raised upon an unaligned program counter. Let's implement that
and also add some tests.
Signed-off-by: Matheus Tavares Bernardino <quic_mathbern@quicinc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Taylor Simpson <ltaylorsimpson@gmail.com>
Reviewed-by: Brian Cain <bcain@quicinc.com>
Message-Id: <277b7aeda2c717a96d4dde936b3ac77707cb6517.1714755107.git.quic_mathbern@quicinc.com>
Signed-off-by: Brian Cain <bcain@quicinc.com>
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>
Tiny patch to add the ioctl wrapper definition for BLKBSZSET.
Signed-off-by: Michael Vogt <mvogt@redhat.com>
Message-Id: <20240423152438.19841-2-mvogt@redhat.com>
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>
Invert the sense of the return value and use bool.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Invert the sense of the return value and use bool.
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>
For now, continue to pass all 1's from signal.c.
Reviewed-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The kernel does this along the return path to user mode.
Reviewed-by: Helge Deller <deller@gmx.de>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
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Merge tag 'qemu-sparc-20240506' of https://github.com/mcayland/qemu into staging
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>
Get the TaskState pointer calling get_task_state().
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240428221450.26460-11-philmd@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>
Forward declare TaskState in "qemu/typedefs.h" so we can
use it in generic headers like "hw/cpu/core.h".
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240428221450.26460-9-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>
This macro can be used to abbreviate PAGE_READ | PAGE_WRITE | PAGE_EXEC
for which PAGE_RWX is a better name and renaming it also shows it is
not related to TARGET_PAGE_BITS.
Signed-off-by: BALATON Zoltan <balaton@eik.bme.hu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-ID: <20240505121008.44A0D4E602D@zero.eik.bme.hu>
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Keep all user emulation headers under the same user/ directory.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240428221450.26460-2-philmd@linaro.org>
Keep all user emulation headers under the same user/ directory.
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240503125202.35667-1-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>
tswapl() and bswaptls() are target-dependent and only used
by user emulation. Move their definitions to a new header:
"exec/user/tswap-target.h".
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Anton Johansson <anjo@rev.ng>
Message-Id: <20231212123401.37493-17-philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Since commit 139c1837db ("meson: rename included C source files
to .c.inc"), QEMU standard procedure for included C files is to
use *.c.inc.
Besides, since commit 6a0057aa22 ("docs/devel: make a statement
about includes") this is documented in the Coding Style:
If you do use template header files they should be named with
the ``.c.inc`` or ``.h.inc`` suffix to make it clear they are
being included for expansion.
Therefore rename "hw/elf_ops.h" as "hw/elf_ops.h.inc".
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20240424173333.96148-2-philmd@linaro.org>
Ever since the bFLT format support was added in 2006, there has been
a chunk of code in the file guarded by CONFIG_BINFMT_SHARED_FLAT
which is supposedly for shared library support. This is not enabled
and it's not possible to enable it, because if you do you'll run into
the "#error needs checking" in the calc_reloc() function.
Similarly, CONFIG_BINFMT_ZFLAT exists but can't be enabled because of
an "#error code needs checking" in load_flat_file().
This code is obviously unfinished and has never been used; nobody in
the intervening 18 years has complained about this or fixed it, so
just delete the dead code. If anybody ever wants the feature they
can always pull it out of git, or (perhaps better) write it from
scratch based on the current Linux bFLT loader rather than the one of
18 years ago.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Message-id: 20240411115313.680433-1-peter.maydell@linaro.org
Tiny patch to add the missing FITRIM ioctl.
Signed-off-by: Michael Vogt <mvogt@redhat.com>
Message-Id: <20240403092048.16023-2-michael.vogt@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
There's identical code for SO_SNDTIMEO and SO_RCVTIMEO, currently
implemented using an ugly goto into another switch case. Eliminate
that using arithmetic if, making code flow more natural.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Message-Id: <20240331100737.2724186-5-mjt@tls.msk.ru>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Message-Id: <20240331100737.2724186-4-mjt@tls.msk.ru>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
ip_mreq is declared at the beginning of do_setsockopt(), while
it is used in only one place. Move its declaration to that very
place and replace pointer to alloca()-allocated memory with the
structure itself.
target_to_host_ip_mreq() is used only once, inline it.
This change also properly handles TARGET_EFAULT when the address
is wrong.
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Message-Id: <20240331100737.2724186-3-mjt@tls.msk.ru>
[rth: Fix braces, adjust optlen to match host structure size]
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
This setsockopt accepts zero-lengh optlen (current qemu implementation
does not allow this). Also, there's no need to make a copy of the key,
it is enough to use lock_user() (which accepts zero length already).
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2197
Fixes: f31dddd2fc "linux-user: Add support for setsockopt() option SOL_ALG"
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Message-Id: <20240331100737.2724186-2-mjt@tls.msk.ru>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Currently DEBUG_REMAP is a macro that needs to be manually #defined to
be activated, which makes it hard to have separate build directories
dedicated to testing the code with it. Promote it to a meson option.
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240312002402.14344-1-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The Nios II target is deprecated since v8.2 in commit 9997771bc1
("target/nios2: Deprecate the Nios II architecture").
Remove:
- Buildsys / CI infra
- User emulation
- System emulation (10m50-ghrd & nios2-generic-nommu machines)
- Tests
Signed-off-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Marek Vasut <marex@denx.de>
Message-Id: <20240327144806.11319-3-philmd@linaro.org>
Passing the tswapped structure to strace means that
our internal si_type is also gone, which then aborts
in print_siginfo.
Fixes: 4d6d8a05a0 ("linux-user: Move tswap_siginfo out of target code")
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Use glib allocation as recommended by the coding convention
Signed-off-by: Nguyen Dinh Phi <phind.uet@gmail.com>
Message-Id: <20240317171747.1642207-1-phind.uet@gmail.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The copy back to siginfo_t should be conditional only on arg3,
not the specific values that might have been written.
The copy back to rusage was missing entirely.
Resolves: https://gitlab.com/qemu-project/qemu/-/issues/2262
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Alex Fan <alex.fan.q@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@linaro.org>
In the h != g && shmaddr == NULL && !reserved_va case, target_shmat()
incorrectly mmap()s the initial anonymous range with
MAP_FIXED_NOREPLACE, even though the earlier mmap_find_vma() has
already reserved the respective address range.
Fix by using MAP_FIXED when "mapped", which is set after
mmap_find_vma(), is true.
Fixes: 78bc8ed9a8 ("linux-user: Rewrite target_shmat")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240325192436.561154-4-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
The indices of arguments passed to print_shmat() are all off-by-1,
because arg1 is the ipc() command. Fix them.
New output for linux-shmat-maps test:
3501769 shmat(4784214,0x0000000000800000,SHM_RND) = 0
Fixes: 9f7c97324c ("linux-user: Add strace for shmat")
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com>
Message-Id: <20240325192436.561154-3-iii@linux.ibm.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
