Peter Maydell [Wed, 8 Sep 2021 15:43:58 +0000 (16:43 +0100)]
linux-user: Split strace prototypes into strace.h
The functions implemented in strace.c are only used in a few files in
linux-user; split them out of qemu.h and into a new strace.h header
which we include in the places that need it.
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: <20210908154405.15417-3-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Peter Maydell [Wed, 8 Sep 2021 15:43:57 +0000 (16:43 +0100)]
linux-user: Fix coding style nits in qemu.h
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>
* remotes/bonzini-gitlab/tags/for-upstream: (21 commits)
docs: link to archived Fedora code of conduct
Fix nvmm_ram_block_added() function arguments
Only check CONFIG_NVMM when NEED_CPU_H is defined
util: Suppress -Wstringop-overflow in qemu_thread_start
fw_cfg: add etc/msr_feature_control
meson: remove dead variable
meson: do not use python.full_path() unnecessarily
meson: look up cp and dtrace with find_program()
meson.build: Do not look for VNC-related libraries if have_system is not set
docs/system: move x86 CPU configuration to a separate document
docs/system: standardize man page sections to --- with overline
docs: standardize directory index to --- with overline
docs: standardize book titles to === with overline
target/i386: Added vVMLOAD and vVMSAVE feature
target/i386: Added changed priority check for VIRQ
target/i386: Added ignore TPR check in ctl_has_irq
target/i386: Added VGIF V_IRQ masking capability
target/i386: Moved int_ctl into CPUX86State structure
target/i386: Added VGIF feature
target/i386: VMRUN and VMLOAD canonicalizations
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Paolo Bonzini [Thu, 9 Sep 2021 14:25:55 +0000 (16:25 +0200)]
docs: link to archived Fedora code of conduct
Fedora has switched to a different CoC. QEMU's own code of conduct
is based on the previous version and cites it as a source. Replace
the link with one to the Wayback Machine.
Reviewed-by: Markus Armbruster <armbru@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
util: Suppress -Wstringop-overflow in qemu_thread_start
This seems to be either a glibc or gcc bug, but the code
appears to be fine with the warning suppressed.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210803211907.150525-1-richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Wed, 8 Sep 2021 10:13:14 +0000 (12:13 +0200)]
meson: do not use python.full_path() unnecessarily
The "python" variable is an external program and can be passed
directly to custom_target. This avoids the need to look it up
multiple times, which was previously silent but is now explicit
in recent Meson versions.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Thomas Huth [Mon, 6 Sep 2021 15:39:39 +0000 (17:39 +0200)]
meson.build: Do not look for VNC-related libraries if have_system is not set
When running "./configure --static --disable-system" there is currently
a warning if the static version of libpng is missing:
WARNING: Static library 'png16' not found for dependency 'libpng', may not
be statically linked
Since it does not make sense to look for the VNC-related libraries at all
when we're building without system emulator binaries, let's add a check
for have_system here to silence this warning.
Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20210906153939.165567-1-thuth@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 7 Sep 2021 14:08:59 +0000 (16:08 +0200)]
docs/system: move x86 CPU configuration to a separate document
Currently, cpu-models-x86.rst.inc is included in target-i386.rst directly.
To make the toctree more homogeneous when adding more documentation,
include it through a first-class .rst file.
Together with the previous changes to the man page skeletons, this also
frees "===" for the headings, so that cpu-models-x86.rst.inc need not
assume anything about the headings used by target-i386.rst.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 7 Sep 2021 15:33:27 +0000 (17:33 +0200)]
docs/system: standardize man page sections to --- with overline
Man pages in docs/system use file inclusion heavily. Use headings with
overlines in the main files, so that the same included file work well
from both manuals and man pages.
This style of heading is a bit more heavy-weight, so it is not used by
the other man pages in interop/ and tools/. If in the future they
are changed to use include files, for example to avoid having sections
named "synopsis" or "description", they can switch to --- with overline
as well.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Paolo Bonzini [Tue, 7 Sep 2021 14:01:28 +0000 (16:01 +0200)]
docs: standardize directory index to --- with overline
Use a standard heading format for the index.rst file in a directory.
Using overlines makes it clear that individual documents can use e.g.
=== for chapter titles and --- for section titles, as suggested in the
Linux kernel guidelines[1]. They could do it anyway, because documents
included in a toctree are parsed separately and therefore are not tied
to the same conventions for headings. However, keeping some consistency is
useful since sometimes files are included from multiple places.
Paolo Bonzini [Tue, 7 Sep 2021 13:58:12 +0000 (15:58 +0200)]
docs: standardize book titles to === with overline
Documents within a Sphinx manual are separate files and therefore can use
different conventions for headings. However, keeping some consistency is
useful so that included files are easy to get right.
This patch uses a standard heading format for book titles, so that it is
obvious when a file sits at the top level toctree of a book or man page.
The heading is irrelevant for man pages, but keep it consistent as well.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Lara Lazier [Sat, 14 Aug 2021 07:51:00 +0000 (09:51 +0200)]
target/i386: Moved int_ctl into CPUX86State structure
Moved int_ctl into the CPUX86State structure. It removes some
unnecessary stores and loads, and prepares for tracking the vIRQ
state even when it is masked due to vGIF.
Signed-off-by: Lara Lazier <laramglazier@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
VGIF allows STGI and CLGI to execute in guest mode and control virtual
interrupts in guest mode.
When the VGIF feature is enabled then:
* executing STGI in the guest sets bit 9 of the VMCB offset 60h.
* executing CLGI in the guest clears bit 9 of the VMCB offset 60h.
Signed-off-by: Lara Lazier <laramglazier@gmail.com>
Message-Id: <20210730070742.9674-1-laramglazier@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Lara Lazier [Wed, 4 Aug 2021 11:30:58 +0000 (13:30 +0200)]
target/i386: VMRUN and VMLOAD canonicalizations
APM2 requires that VMRUN and VMLOAD canonicalize (sign extend to 63
from 48/57) all base addresses in the segment registers that have been
respectively loaded.
Signed-off-by: Lara Lazier <laramglazier@gmail.com>
Message-Id: <20210804113058.45186-1-laramglazier@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
All MBZ bits in CR4 must be zero. (APM2 15.5)
Added reserved bitmask and added checks in both
helper_vmrun and helper_write_crN.
Signed-off-by: Lara Lazier <laramglazier@gmail.com>
Message-Id: <20210721152651.14683-2-laramglazier@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
In this commit CR4_RESERVED_MASK is missing CR4_LA57_MASK and
two others. Adding this lets Fedora kernels boot once again.
Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Tested-by: Richard W.M. Jones <rjones@redhat.com>
Message-Id: <20210831175033.175584-1-berrange@redhat.com>
[Removed VMXE/SMXE, matching the commit message. - Paolo] Fixes: 213ff024a2 ("target/i386: Added consistency checks for CR4", 2021-07-22) Cc: qemu-stable@nongnu.org Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* remotes/armbru/tags/pull-qapi-2021-09-13:
qapi: Fix bogus error for 'if': { 'not': '' }
tests/qapi-schema: Cover 'not' condition with empty argument
qapi: Bury some unused code in class Indentation
qapi: Drop Indentation.__bool__()
qapi: Fix a botched type annotation
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Peter Maydell [Sat, 11 Sep 2021 13:00:39 +0000 (14:00 +0100)]
Merge remote-tracking branch 'remotes/bsdimp/tags/pull-bsd-user-20210910' into staging
This series of patches gets me to the point that I can run "Hello World" on i386
and x86_64. This is for static binaries only, that are relatively small, but
it's better than the 100% instant mmap failre that is the current state of all
things bsd-user in upstream qemu. Future patch sets will refine this, add
the missing system calls, fix bugs preventing more sophisticated programms
from running and add a bunch of new architecture support.
There's three large themes in these patches, though the changes that
represent them are interrelated making it hard to separate out further.
1. Reorganization to support multiple OS and architectures (though I've only
tested FreeBSD, other BSDs might not even compile yet).
2. Diff reduction with the bsd-user fork for several files. These diffs include
changes that borrowed from linux-user as well as changes to make things work
on FreeBSD. The records keeping when this was done, however, was poor at
best, so many of the specific borrowings are going unacknowledged here, apart
from this general ack. These diffs also include some minor code shuffling.
Some of the changes are done specifically to make it easier to rebase
the bsd-user fork's changes when these land in the tree (a number of changes
have been pushed there to make this more possible).
3. Filling in the missing pieces to make things work. There's many changes to
elfload to make it load things in the right places, to find the interpreter
better, etc. There's changes to mmap.c to make the mappings work better and
there's changes to main.c that were inspired, at least, by now-ancient changes
to linux-user's main.c.
I ran checkpatch.pl on this, and there's 350-odd errors it identifies (the vast
majoirty come from BSD's fetish for tabs), so there will need to be a V2 to fix
this at the very least. In addition, the change set is big (about +~4.5k/-~2.5k
lines), so I anticipate some iteration as well just based on its sheer
size. I've tried to keep each set small to make it easy to review in isolation,
but I've also allowed some interrelated ones to get a little bigger than I'd
normally like. I've not done the customary documentation of the expected
checkpatch.pl output because it is large, and because I wanted to get review
of the other parts rolling to get this project unstuck. Future versions of the
patch will document the expected output.
In addition, I noticed a number of places where I could modernize to make the
code match things like linux-user better. I've resisted the urge to do these at
this time, since it would complicate merging the other ~30k lines of diff that
remains after this batch. Future batches should generally be smaller once this
one has landed since they are, by and large, either a bunch of new files to
support armv7, aarch64, riscv64, mips, mipsel, mips64, ppc, ppc64 and ppc64le,
or are adding system calls, which can be done individually or small groups. I've
removed sparc and sparc64 support as they've been removed from FreeBSD and
have been near totally busted for years.
Stacey Son did the bulk of this work originally, but since I had to move things
around so much and/or retool that work in non-trivial ways, I've kept myself as
author, and added his signed-off-by line. I'm unsure of the qemu standard
practice for this, but am happy to learn if this is too far outside its current
mainstream. For a while Sean Bruno did the merges from upstream, and he's
credited using his signed-off-by in appropriate places, though for this patch
set there's only a few. I've tried to ensure that others who have work in
individual patches that I've aggregated together also are reflected in their
signed-off-by. Given the chaotic stat of the upstream repo for its early
history, this may be the best that can be reconstructed at this late date. Most
of these files are 'foundational' so have existed from the earliest days when
record keeping wasn't quite what I'd wish for in hindsight. There was only
really one change that I could easily cherry-pick (Colin's), so I did that.
# gpg: Signature made Fri 10 Sep 2021 21:24:08 BST
# 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/pull-bsd-user-20210910: (42 commits)
bsd-user: Update mapping to handle reserved and starting conditions
bsd-user: Add '-0 argv0' option to bsd-user/main.c
bsd-user: Implement interlock for atomic operations
bsd-user: move gemu_log to later in the file
bsd-user: Refactor load_elf_sections and is_target_elf_binary
bsd-user: elfload.c style catch up patch
bsd-user: add stubbed out core dump support
bsd-user: Add target_os_user.h to capture the user/kernel structures
bsd-user: Add target_arch_reg to describe a target's register set
bsd-user: update debugging in mmap.c
bsd-user: Rewrite target system call definintion glue
bsd-user: Remove dead #ifdefs from elfload.c
bsd-user: elf cleanup
bsd-user: Add architecture specific signal tramp code
bsd-user: Move stack initializtion into a per-os file.
bsd-user: Implement --seed and initialize random state
bsd-user: *BSD specific siginfo defintions
bsd-user: Add system independent stack, data and text limiting
bsd-user: Create target specific vmparam.h
bsd-user: define max args in terms of pages
...
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Warner Losh [Fri, 6 Aug 2021 00:15:47 +0000 (18:15 -0600)]
bsd-user: Update mapping to handle reserved and starting conditions
Update the reserved base based on what platform we're on, as well as the
start of the mmap range. Update routines that find va ranges to interact
with the reserved ranges as well as properly align the mapping (this is
especially important for targets whose page size does not match the
host's). Loop where appropriate when the initial address space offered
by mmap does not meet the contraints.
This has 18e80c55bb6 from linux-user folded in to the upstream
bsd-user code as well.
Signed-off-by: Mikaël Urankar <mikael.urankar@gmail.com> Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Colin Percival [Sat, 7 Aug 2021 20:34:21 +0000 (14:34 -0600)]
bsd-user: Add '-0 argv0' option to bsd-user/main.c
Previously it was impossible to emulate a program with a file name
different from its argv[0]. With this change, you can run
qemu -0 fakename realname args
which runs the program "realname" with an argv of "fakename args".
Signed-off-by: Colin Percival <cperciva@tarsnap.com> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Warner Losh [Sat, 7 Aug 2021 20:22:34 +0000 (14:22 -0600)]
bsd-user: Implement interlock for atomic operations
Implement the internlock in fork_start() and fork_end() to properly cope
with atomic operations and to safely keep state for parent and child
processes.
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Warner Losh [Fri, 6 Aug 2021 20:20:16 +0000 (14:20 -0600)]
bsd-user: add stubbed out core dump support
Add a stubbed-out version of the bsd-user fork's core dump support. This
allows elfload.c to be almost the same between what's upstream and
what's in qemu-project upstream w/o the burden of reviewing the core
dump support.
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Warner Losh [Fri, 6 Aug 2021 20:05:41 +0000 (14:05 -0600)]
bsd-user: Add target_os_user.h to capture the user/kernel structures
This file evolved over the years to capture the user/kernel interfaces,
including those that changed over time.
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Michal Meloun <mmel@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Warner Losh [Fri, 6 Aug 2021 20:02:10 +0000 (14:02 -0600)]
bsd-user: Add target_arch_reg to describe a target's register set
target_reg_t is the normal register. target_fpreg_t is the floating
point registers. target_copy_regs copies the registers out of CPU
context for things like core dumps.
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Warner Losh [Thu, 5 Aug 2021 19:36:41 +0000 (13:36 -0600)]
bsd-user: Rewrite target system call definintion glue
Rewrite target definnitions to interface with the FreeBSD system calls.
This covers basic types (time_t, iovec, umtx_time, timespec, timeval,
rusage, rwusage) and basic defines (mmap, rusage). Also included are
FreeBSD version-specific variations.
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Warner Losh [Wed, 4 Aug 2021 23:13:24 +0000 (17:13 -0600)]
bsd-user: elf cleanup
Move OS-dependent defines into target_os_elf.h. Move the architectural
dependent stuff into target_arch_elf.h. Adjust elfload.c to use
target_create_elf_tables instead of create_elf_tables.
Signed-off-by: Warner Losh <imp@bsdimp.com> Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Kyle Evans <kevans@FreeBSD.org> Signed-off-by: Justin Hibbits <chmeeedalf@gmail.com> Signed-off-by: Alexander Kabaev <kan@FreeBSD.ORG> Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Warner Losh [Wed, 4 Aug 2021 19:34:05 +0000 (13:34 -0600)]
bsd-user: Add architecture specific signal tramp code
Add a stubbed out version of setup_sigtramp. This is not yet used for
x86, but is used for other architectures. This will be connected in
future commits.
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Warner Losh [Thu, 2 Sep 2021 22:52:45 +0000 (16:52 -0600)]
bsd-user: Implement --seed and initialize random state
Copy --seed implementation (translated from linux-user's newer command
line scheme to the older one bsd-user still uses). Initialize the
randomness with the glib if a specific seed is specified or use the
qcrypto library if not.
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Warner Losh [Thu, 5 Aug 2021 19:41:52 +0000 (13:41 -0600)]
bsd-user: *BSD specific siginfo defintions
Add FreeBSD, NetBSD and OpenBSD values for the various signal info types
and defines to decode different signals to discover more information
about the specific signal types.
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Warner Losh [Sat, 7 Aug 2021 00:48:37 +0000 (18:48 -0600)]
bsd-user: Add system independent stack, data and text limiting
Eliminate the x86 specific stack stuff in favor of more generic control
over the process size:
target_maxtsiz max text size
target_dfldsiz initial data size limit
target_maxdsiz max data size
target_dflssiz initial stack size limit
target_maxssiz max stack size
target_sgrowsiz amount to grow stack
These can be set on a per-arch basis, and the stack size can be set
on the command line. Adjust the stack size parameters at startup.
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Warner Losh [Wed, 4 Aug 2021 04:04:20 +0000 (22:04 -0600)]
bsd-user: pull in target_arch_thread.h update target_arch_elf.h
Update target_arch_elf.h to remove thread_init. Move its contents to
target_arch_thread.h and rename to target_thread_init(). Update
elfload.c to call it. Create thread_os_thread.h to hold the os specific
parts of the thread and threat manipulation routines. Currently, it just
includes target_arch_thread.h. target_arch_thread.h contains the at the
moment unused target_thread_set_upcall which will be used in the future
when creating actual thread (i386 has this stubbed, but other
architectures in the bsd-user tree have real ones). FreeBSD doesn't do
AT_HWCAP, so remove that code. Linux does, and this code came from there.
These changes are all interrelated and could be brokend down, but seem
to represent a reviewable changeset since most of the change is boiler
plate.
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Kyle Evans <kevans@FreeBSD.org>
Warner Losh [Tue, 3 Aug 2021 18:34:52 +0000 (12:34 -0600)]
bsd-user: assume pthreads and support of __thread
All compilers for some time have supported this. Follow linux-user and
eliminate the #define THREAD and unconditionally insert __thread where
needed. Please insert: "(see 24cb36a61c6: "configure: Make NPTL
non-optional")"
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Warner Losh [Fri, 30 Apr 2021 14:17:23 +0000 (08:17 -0600)]
bsd-user: remove a.out support
Remove still-born a.out support. The BSDs switched from a.out to ELF 20+ years
ago. It's out of scope for bsd-user, and what little support there was would
simply wind up at a not-implemented message. Simplify the whole mess by removing
it entirely. Should future support be required, it would be better to start from
scratch.
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Warner Losh [Fri, 30 Apr 2021 04:25:36 +0000 (22:25 -0600)]
bsd-user: Eliminate elf personality
The linux kernel supports a number of different ELF binaries. The Linux userland
emulator inheritted some of that. And we inheritted it from there. However, for
BSD there's only one kind of ELF file supported per platform, so there's no need
to cope with historical quirks. Simply the code as a result.
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Warner Losh [Fri, 30 Apr 2021 01:34:34 +0000 (19:34 -0600)]
bsd-user: implement path searching
Use the PATH to find the executable given a bare argument. We need to do
this so we can implement mixing native and emulated binaries (e.g.,
execing a x86 native binary from an emulated arm binary to optimize
parts of the build). By finding the binary, we will know how to exec it.
Signed-off-by: Stacey Son <sson@FreeBSD.org> Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Warner Losh [Fri, 30 Apr 2021 00:47:51 +0000 (18:47 -0600)]
bsd-user: Fix calculation of size to allocate
It was incorrect to subtract off the size of an unsigned int here. In
bsd-user fork, this change was made when moving the arch specific items
to specific files. The size in BSD that's available for the arguments
does not need a return address subtracted from it.
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Warner Losh [Fri, 30 Apr 2021 00:45:13 +0000 (18:45 -0600)]
bsd-user: pass the bsd_param into loader_exec
Pass the bsd_param into loader_exec, and adjust. We use it to track the
inital stack allocation and to set stack, open files, and other state
shared between bsdload.c and elfload.c
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Warner Losh [Thu, 29 Apr 2021 16:41:29 +0000 (10:41 -0600)]
bsd-user: move arch specific defines out of elfload.c
Move the architecture specific defines to target_arch_elf.h and delete
them from elfload.c. Only retain ifdefs appropriate for i386 and x86_64.
Add the copyright/license comments, and guard ifdefs.
Signed-off-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
* remotes/kraxel/tags/input-20210910-pull-request:
ps2: migration support for command reply queue
ps2: use a separate keyboard command reply queue
ps2: use the whole ps2 buffer but keep queue size
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Volker Rümelin [Tue, 10 Aug 2021 13:32:57 +0000 (15:32 +0200)]
ps2: use a separate keyboard command reply queue
A PS/2 keyboard has a separate command reply queue that is
independent of the key queue. This prevents that command replies
and keyboard input mix. Keyboard command replies take precedence
over queued keystrokes. A new keyboard command removes any
remaining command replies from the command reply queue.
Implement a separate keyboard command reply queue and clear the
command reply queue before command execution. This brings the
PS/2 keyboard emulation much closer to a real PS/2 keyboard.
The command reply queue is located in a few free bytes directly
in front of the scancode queue. Because the scancode queue has
a maximum length of 16 bytes there are 240 bytes available for
the command reply queue. At the moment only a maximum of 3 bytes
are required. For compatibility reasons rptr, wptr and count kept
their function. rptr is the start, wptr is the end and count is
the length of the entire keyboard queue. The new variable cwptr
is the end of the command reply queue or -1 if the queue is
empty. To write to the command reply queue, rptr is moved
backward by the number of required bytes and the command replies
are written to the buffer starting at the new rptr position.
After writing, cwptr is at the old rptr position. Copying cwptr
to rptr clears the command reply queue. The command reply queue
can't overflow because each new keyboard command clears the
command reply queue.
* remotes/mcayland/tags/qemu-sparc-20210908:
escc: fix STATUS_SYNC bit in R_STATUS register
escc: re-use escc_reset_chn() for soft reset
escc: remove register changes from escc_reset_chn()
escc: implement hard reset as described in the datasheet
escc: implement soft reset as described in the datasheet
escc: introduce escc_hard_reset_chn() for hardware reset
escc: introduce escc_soft_reset_chn() for software reset
escc: reset register values to zero in escc_reset()
escc: checkpatch fixes
sun4m: fix setting CPU id when more than one CPU is present
tcg: Drop gen_io_end()
target/sparc: Drop use of gen_io_end()
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Mark Cave-Ayland [Mon, 30 Aug 2021 10:24:45 +0000 (11:24 +0100)]
mac_via: remove explicit viaN prefix from VIA IRQ gpios
Now that q800 VIA1 and VIA2 are completely separate devices there is no need to
add a specific device prefix to ensure that the IRQ lines remain separate.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210830102447.10806-11-mark.cave-ayland@ilande.co.uk> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Mark Cave-Ayland [Mon, 30 Aug 2021 10:24:36 +0000 (11:24 +0100)]
mac_via: introduce new VMStateDescription for q800 VIA1 and VIA2
Move the parent mos6522 objects from vmstate_mac_via into the new VMStateDescription
structures to begin the process of splitting MacVIAState into separate VIA1 and
VIA2 devices.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210908045428.2689093-6-armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
[check_infix()'s type hint fixed]
.decrease() raises ArithmeticError when asked to decrease indentation
level below zero. Nothing catches it. It's a programming error.
Dumb down to assert.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210908045428.2689093-4-armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
$ mypy --config-file=scripts/qapi/mypy.ini `git-ls-files scripts/qapi/\*py`
scripts/qapi/common.py:208: error: Function is missing a return type annotation
scripts/qapi/common.py:227: error: Returning Any from function declared to return "str"
Messed up in commit ccea6a8637 "qapi: Factor common recursion out of
cgen_ifcond(), docgen_ifcond()". Tidy up.
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20210908045428.2689093-2-armbru@redhat.com> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
After an SDLC "Enter hunt" command has been sent the STATUS_SYNC bit should remain
high until the flag byte has been detected. Whilst the ESCC device doesn't yet
implement SDLC mode, without this change the active low STATUS_SYNC is constantly
asserted causing the MacOS OpenTransport extension to hang on startup as it thinks
it is constantly receiving LocalTalk responses during its initial negotiation
phase.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210903113223.19551-10-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
This removes duplication of the internal device state initialisation between
device reset and soft reset.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210903113223.19551-9-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
escc: remove register changes from escc_reset_chn()
Now that register values at reset are handled elsewhere for all of device reset,
soft reset and hard reset, escc_reset_chn() only needs to handle initialisation
of internal device state.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210903113223.19551-8-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
escc: implement hard reset as described in the datasheet
The hardware reset differs from a device reset in that it only changes the contents
of specific registers. Remove the code that resets all the registers to zero during
hardware reset and implement the default values using the existing soft reset code
with the additional changes listed in the table in the "Z85C30 Reset" section.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210903113223.19551-7-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
escc: implement soft reset as described in the datasheet
The software reset differs from a device reset in that it only changes the contents
of specific registers. Remove the code that resets all the registers to zero during
soft reset and implement the default values listed in the table in the "Z85C30 Reset"
section.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210903113223.19551-6-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
escc: introduce escc_hard_reset_chn() for hardware reset
This new hardware reset function is to be called for both channels when the
hardware reset bit is written to register WR9. Its initial implementation is
the same as the existing escc_reset_chn() function used for device reset.
Add a new trace event when the guest initiates a hard reset via the WR9 register
to help diagnose guest reset issues.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210903113223.19551-5-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
escc: introduce escc_soft_reset_chn() for software reset
This new software reset function is to be called when the appropriate channel
software reset bit is written to register WR9. Its initial implementation is
the same as the existing escc_reset_chn() function used for device reset.
Add a new trace event when the guest initiates a soft reset via the WR9 register
to help diagnose guest reset issues.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210903113223.19551-4-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
escc: reset register values to zero in escc_reset()
This is to ensure that a device reset always returns the ESCC to a known state.
Note that this is currently redundant with the same code in escc_reset_chn()
but that will change shortly.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210903113223.19551-3-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Also fix a couple of spelling mistakes in comments.
Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210903113223.19551-2-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Mark Cave-Ayland [Wed, 25 Aug 2021 09:51:00 +0000 (10:51 +0100)]
sun4m: fix setting CPU id when more than one CPU is present
Commit 24f675cd3b ("sparc/sun4m: Use start-powered-off CPUState property") changed
the sun4m CPU reset code to use the start-powered-off property and so split the
creation of the CPU into separate instantiation and realization phases to enable
the new start-powered-off property to be set.
This accidentally broke sun4m machines with more than one CPU present since
sparc_cpu_realizefn() sets a default CPU id, and now that realization occurs after
calling cpu_sparc_set_id() in cpu_devinit() the CPU id gets reset back to the
default instead of being uniquely encoded based upon the CPU number. As soon as
another CPU is brought online, the OS gets confused between them and promptly
panics.
Resolve the issue by moving the cpu_sparc_set_id() call in cpu_devinit() to after
the point where the CPU device has been realized as before.
Fixes: 24f675cd3b ("sparc/sun4m: Use start-powered-off CPUState property") Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210825095100.20180-1-mark.cave-ayland@ilande.co.uk> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Peter Maydell [Sat, 24 Jul 2021 13:49:02 +0000 (14:49 +0100)]
tcg: Drop gen_io_end()
Now we have removed all the uses of gen_io_end() from target frontends,
the only callsite is inside gen_tb_start(). Inline the code there,
and remove the reference to it from the documentation.
While we are inlining the code, switch it to use tcg_constant_i32()
so we don't have to manually create and destroy a TCG temporary.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210724134902.7785-3-peter.maydell@linaro.org> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Peter Maydell [Sat, 24 Jul 2021 13:49:01 +0000 (14:49 +0100)]
target/sparc: Drop use of gen_io_end()
The gen_io_end() function is obsolete (as documented in
docs/devel/tcg-icount.rst). Where an instruction is an I/O
operation, the translator frontend should call gen_io_start()
before generating the code which does the I/O, and then
end the TB immediately after this insn.
Remove the calls to gen_io_end() in the SPARC frontend,
and ensure that the insns which were calling it end the
TB if they didn't do so already.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210724134902.7785-2-peter.maydell@linaro.org> Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
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