Merge tag 'bsd-user-mmap-pull-request' of https://gitlab.com/bsdimp/qemu into staging

bsd-user mmap and exec branches from gsoc

This pull request represents the mmap and exec changes from Karim Tah

Merge tag 'bsd-user-mmap-pull-request' of https://gitlab.com/bsdimp/qemu into staging

bsd-user mmap and exec branches from gsoc

This pull request represents the mmap and exec changes from Karim Taha
for his GSoC project.

They represent all the mmap and exec related system calls and get bsd-user to
the point that a dynamic hello-world works (at least for armv7).

There are a couple of patch check errors, but they are the lessor evil: I made
purposely bad style choices to ensure all the commits compiled (and i undid the
style choices in subsequent commits).

I pushed an earlier version to gitlab, and all but the riscv64 pipelines were
green. Since bsd-user doesn't change anything related to ricsv64 (there's no
support in qemu-project repo, though we do have it in the bsd-user fork: coming
soon).

I think this is good to go.

https://gitlab.com/bsdimp/qemu.git

Warner

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# gpg: Signature made Tue 03 Oct 2023 19:30:54 EDT
# 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-mmap-pull-request' of https://gitlab.com/bsdimp/qemu: (51 commits)
bsd-user: Add stubs for vadvise(), sbrk() and sstk()
bsd-user: Implement shmat(2) and shmdt(2)
bsd-user: Implement shmctl(2)
bsd-user: Implement shm_unlink(2) and shmget(2)
bsd-user: Implement shm_open(2)
bsd-user: Implement do_obreak function
bsd-user: Implement mincore(2)
bsd-user: Implment madvise(2) to match the linux-user implementation.
bsd-user: Implement mlock(2), munlock(2), mlockall(2), munlockall(2), minherit(2)
bsd-user: Implement msync(2)
bsd-user: Implement mprotect(2)
bsd-user: Implement mmap(2) and munmap(2)
bsd-user: Introduce bsd-mem.h to the source tree
bsd-user: Implement shmid_ds conversion between host and target.
bsd-user: Implement ipc_perm conversion between host and target.
bsd-user: Implement target_set_brk function in bsd-mem.c instead of os-syscall.c
bsd-user: Add bsd-mem.c to meson.build
bsd-user: Implement shm_rename(2) system call
bsd-user: Implement shm_open2(2) system call
bsd-user: Introduce freebsd/os-misc.h to the source tree
...

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

bsd-user: Implement host_to_target_siginfo.

Used in wait6 system call

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderso

bsd-user: Implement host_to_target_siginfo.

Used in wait6 system call

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Karim Taha <kariem.taha2.7@gmail.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>
Message-Id: <20230925182425.3163-4-kariem.taha2.7@gmail.com>

show more ...

Merge tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu into staging

trivial patches for 2023-09-21

# -----BEGIN PGP SIGNATURE-----
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Merge tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu into staging

trivial patches for 2023-09-21

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# gpg: Signature made Thu 21 Sep 2023 04:33:18 EDT
# gpg: using RSA key 7B73BAD68BE7A2C289314B22701B4F6B1A693E59
# gpg: issuer "mjt@tls.msk.ru"
# gpg: Good signature from "Michael Tokarev <mjt@tls.msk.ru>" [full]
# gpg: aka "Michael Tokarev <mjt@corpit.ru>" [full]
# gpg: aka "Michael Tokarev <mjt@debian.org>" [full]
# Primary key fingerprint: 6EE1 95D1 886E 8FFB 810D 4324 457C E0A0 8044 65C5
# Subkey fingerprint: 7B73 BAD6 8BE7 A2C2 8931 4B22 701B 4F6B 1A69 3E59

* tag 'pull-trivial-patches' of https://gitlab.com/mjt0k/qemu:
docs/devel/reset.rst: Correct function names
docs/cxl: Cleanout some more aarch64 examples.
hw/mem/cxl_type3: Add missing copyright and license notice
hw/cxl: Fix out of bound array access
docs/cxl: Change to lowercase as others
hw/cxl/cxl_device: Replace magic number in CXLError definition
hw/pci-bridge/cxl_upstream: Fix bandwidth entry base unit for SSLBIS
hw/cxl: Fix CFMW config memory leak
hw/i386/pc: fix code comment on cumulative flash size
subprojects: Use the correct .git suffix in the repository URLs
hw/other: spelling fixes
hw/tpm: spelling fixes
hw/pci: spelling fixes
hw/net: spelling fixes
i386: spelling fixes
bsd-user: spelling fixes
ppc: spelling fixes

Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>

show more ...

bsd-user: spelling fixes

Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Reviewed-by: Warner Losh <imp@bsdimp.com>

Merge remote-tracking branch 'remotes/bsdimp/tags/bsd-user-fix-pull-request' into staging

Pull request

Fix FreeBSD 12 and 13 builds.

# gpg: Signature made Tue 01 Feb 2022 21:58:37 GMT
# gpg:

Merge remote-tracking branch 'remotes/bsdimp/tags/bsd-user-fix-pull-request' into staging

Pull request

Fix FreeBSD 12 and 13 builds.

# gpg: Signature made Tue 01 Feb 2022 21:58:37 GMT
# 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

* remotes/bsdimp/tags/bsd-user-fix-pull-request:
bsd-user/signal.c: Only copy the _capsicum for FreeBSD_version > 1400026

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

bsd-user/signal.c: Only copy the _capsicum for FreeBSD_version > 1400026

The capsicum signal stuff is new with FreeBSD 14, rev 1400026, so only
define QEMU_SI_CAPSICUM there. Only copy _capsicum whe

bsd-user/signal.c: Only copy the _capsicum for FreeBSD_version > 1400026

The capsicum signal stuff is new with FreeBSD 14, rev 1400026, so only
define QEMU_SI_CAPSICUM there. Only copy _capsicum when QEMU_SI_CAPSICUM
is defined. Default to no info being passed for signals we make no guess
about.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

Merge remote-tracking branch 'remotes/bsdimp/tags/bsd-user-arm-2022q1-pull-request' into staging

bsd-user: upstream signal implementation

Upstream the bsd-user fork signal implementation, for the m

Merge remote-tracking branch 'remotes/bsdimp/tags/bsd-user-arm-2022q1-pull-request' into staging

bsd-user: upstream signal implementation

Upstream the bsd-user fork signal implementation, for the most part. This
series of commits represents nearly all of the infrastructure that surround
signals, except the actual system call glue (that was also reworked in the
fork and needs its own series). In addition, this adds the sigsegv and sigbus
code to arm. Even in the fork, we don't have good x86 signal implementation,
so there's little to upstream for that at the moment.

bsd-user's signal implementation is similar to linux-user's. The full context
can be found in the bsd-user's fork's 'blitz branch' at
https://github.com/qemu-bsd-user/qemu-bsd-user/tree/blitz which shows how these
are used to implement various system calls. Since this was built from
linux-user's stack stuff, evolved for BSD with the passage of a few years, it
no-doubt missed some bug fixes from linux-user (though nothing obvious stood out
in the quick comparison I made). After the first round of reviews, many of these
improvements have been incorporated.

Patchew history: https://patchew.org/QEMU/20220125012947.14974-1-imp@bsdimp.com/

# gpg: Signature made Mon 31 Jan 2022 19:55:51 GMT
# 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

* remotes/bsdimp/tags/bsd-user-arm-2022q1-pull-request: (40 commits)
bsd-user/freebsd/target_os_ucontext.h: Prefer env as arg name for CPUArchState args
bsd-user: Rename arg name for target_cpu_reset to env
MAINTAINERS: Add tests/vm/*bsd to the list to get reviews on
bsd-user/signal.c: do_sigaltstack
bsd-user/signal.c: implement do_sigaction
bsd-user/signal.c: implement do_sigreturn
bsd-user/signal.c: process_pending_signals
bsd-user/signal.c: tswap_siginfo
bsd-user/signal.c: handle_pending_signal
bsd-user/signal.c: setup_frame
bsd-user/signal.c: sigset manipulation routines.
bsd-user/signal.c: Fill in queue_signal
bsd-user/signal.c: Implement dump_core_and_abort
bsd-user/strace.c: print_taken_signal
bsd-user/signal.c: Implement host_signal_handler
bsd-user/signal.c: Implement rewind_if_in_safe_syscall
bsd-user/signal.c: host_to_target_siginfo_noswap
bsd-user: Add trace events for bsd-user
bsd-user: Add host signals to the build
bsd-user/host/x86_64/host-signal.h: Implement host_signal_*
...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

show more ...

bsd-user/signal.c: implement do_sigaction

Implement the meat of the sigaction(2) system call with do_sigaction and
helper routiner block_signals (which is also used to implemement signal
masking so

bsd-user/signal.c: implement do_sigaction

Implement the meat of the sigaction(2) system call with do_sigaction and
helper routiner block_signals (which is also used to implemement signal
masking so it's global).

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

bsd-user/signal.c: implement do_sigreturn

Implements the meat of a sigreturn(2) system call via do_sigreturn, and
helper reset_signal_mask. Fix the prototype of do_sigreturn in qemu.h
and remove do_

bsd-user/signal.c: implement do_sigreturn

Implements the meat of a sigreturn(2) system call via do_sigreturn, and
helper reset_signal_mask. Fix the prototype of do_sigreturn in qemu.h
and remove do_rt_sigreturn since it's linux only.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

bsd-user/signal.c: sigset manipulation routines.

target_sigemptyset: resets a set to having no bits set
target_sigaddset: adds a signal to a set
target_sigismember: returns true when signal is a m

bsd-user/signal.c: sigset manipulation routines.

target_sigemptyset: resets a set to having no bits set
target_sigaddset: adds a signal to a set
target_sigismember: returns true when signal is a member
host_to_target_sigset_internal: convert host sigset to target
host_to_target_sigset: convert host sigset to target
target_to_host_sigset_internal: convert target sigset to host
target_to_host_sigset: convert target sigset to host

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

bsd-user/signal.c: Add si_type argument to queue_signal

Mirror the linux-user practice and add a si_type argument to queue
signal. This will be transported as the upper 8 bits in the si_type
element

bsd-user/signal.c: Add si_type argument to queue_signal

Mirror the linux-user practice and add a si_type argument to queue
signal. This will be transported as the upper 8 bits in the si_type
element of siginfo so that we know what bits of the structure are valid
and so we can properly implement host_to_target_siginfo_noswap and
tswap_siginfo. Adapt the one caller of queue_signal to the new
interface. Use all the same names as Linux (except _RT which we don't
treat differently, unlike Linux), though some are unused. Place this
into signal-common.h since that's a better place given bsd-user's
structure. Move prototype of queue_signal to signal-common.h to mirror
linux-user's location.

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

bsd-user/signal.c: implement abstract target / host signal translation

Implement host_to_target_signal and target_to_host_signal.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Ev

bsd-user/signal.c: implement abstract target / host signal translation

Implement host_to_target_signal and target_to_host_signal.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

show more ...

bsd-user/signal-common.h: Move signal functions prototypes to here

Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

bsd-user/signal.c: implement force_sig_fault

Start to implement the force_sig_fault code. This currently just calls
queue_signal(). The bsd-user fork version of that will handle this the
synchronous

bsd-user/signal.c: implement force_sig_fault

Start to implement the force_sig_fault code. This currently just calls
queue_signal(). The bsd-user fork version of that will handle this the
synchronous nature of this call. Add signal-common.h to hold signal
helper functions like force_sig_fault.

Signed-off-by: Stacey Son <sson@FreeBSD.org>
Signed-off-by: Kyle Evans <kevans@freebsd.org>
Signed-off-by: Warner Losh <imp@bsdimp.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

show more ...