translate_insn() implementations fetch instruction bytes piecemeal,
which can cause qemu-user to generate inconsistent translations if
another thread modifies them concurrently [1].
Fix by making pages containing translated instruction non-writable
right before loading instruction bytes from them.
Peter Maydell [Mon, 13 Sep 2021 10:19:48 +0000 (11:19 +0100)]
gitlab-ci: Make more custom runner jobs manual, and don't allow failure
Currently we define a lot of jobs for our custom runners:
for both aarch64 and s390x we have
- all-linux-static
- all
- alldbg
- clang (manual)
- tci
- notcg (manual)
This is overkill. The main reason to run on these hosts is to get
coverage for the host architecture; we can leave the handling of
differences like debug vs non-debug to the x86 CI jobs.
The jobs are also generally running OK; they occasionally fail due to
timeouts, which is likely because we're overloading the machine by
asking it to run 4 CI jobs at once plus the ad-hoc CI.
Remove the 'allow_failure' tag from all these jobs, and switch the
s390x-alldbg, aarch64-all, s390x-tci and aarch64-tci jobs to manual.
(We keep -all on s390x and -alldbg on aarch64 just for diversity
of coverage.)
This will let us make the switch for s390x and aarch64 hosts from
the ad-hoc CI to gitlab.
Peter Maydell [Mon, 13 Sep 2021 20:06:15 +0000 (21:06 +0100)]
Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20210913-3' into staging
target-arm queue:
* mark MPS2/MPS3 board-internal i2c buses as 'full' so that command
line user-created devices are not plugged into them
* Take an exception if PSTATE.IL is set
* Support an emulated ITS in the virt board
* Add support for kudo-bmc board
* Probe for KVM_CAP_ARM_VM_IPA_SIZE when creating scratch VM
* cadence_uart: Fix clock handling issues that prevented
u-boot from running
* remotes/pmaydell/tags/pull-target-arm-20210913-3: (23 commits)
hw/arm/mps2.c: Mark internal-only I2C buses as 'full'
hw/arm/mps2-tz.c: Mark internal-only I2C buses as 'full'
hw/arm/mps2-tz.c: Add extra data parameter to MakeDevFn
qdev: Support marking individual buses as 'full'
target/arm: Merge disas_a64_insn into aarch64_tr_translate_insn
target/arm: Take an exception if PSTATE.IL is set
tests/data/acpi/virt: Update IORT files for ITS
hw/arm/virt: add ITS support in virt GIC
tests/data/acpi/virt: Add IORT files for ITS
hw/intc: GICv3 redistributor ITS processing
hw/intc: GICv3 ITS Feature enablement
hw/intc: GICv3 ITS Command processing
hw/intc: GICv3 ITS command queue framework
hw/intc: GICv3 ITS register definitions added
hw/intc: GICv3 ITS initial framework
hw/arm: Add support for kudo-bmc board.
hw/arm/virt: KVM: Probe for KVM_CAP_ARM_VM_IPA_SIZE when creating scratch VM
hw/char: cadence_uart: Log a guest error when device is unclocked or in reset
hw/char: cadence_uart: Ignore access when unclocked or in reset for uart_{read, write}()
hw/char: cadence_uart: Convert to memop_with_attrs() ops
...
Peter Maydell [Mon, 13 Sep 2021 15:07:25 +0000 (16:07 +0100)]
hw/arm/mps2.c: Mark internal-only I2C buses as 'full'
The various MPS2 boards implemented in mps2.c have multiple I2C
buses: a bus dedicated to the audio configuration, one for the LCD
touchscreen controller, and two which are connected to the external
Shield expansion connector. Mark the buses which are used only for
board-internal devices as 'full' so that if the user creates i2c
devices on the commandline without specifying a bus name then they
will be connected to the I2C controller used for the Shield
connector, where guest software will expect them.
Peter Maydell [Mon, 13 Sep 2021 15:07:25 +0000 (16:07 +0100)]
hw/arm/mps2-tz.c: Mark internal-only I2C buses as 'full'
The various MPS2 boards have multiple I2C buses: typically a bus
dedicated to the audio configuration, one for the LCD touchscreen
controller, one for a DDR4 EEPROM, and two which are connected to the
external Shield expansion connector. Mark the buses which are used
only for board-internal devices as 'full' so that if the user creates
i2c devices on the commandline without specifying a bus name then
they will be connected to the I2C controller used for the Shield
connector, where guest software will expect them.
Peter Maydell [Mon, 13 Sep 2021 15:07:25 +0000 (16:07 +0100)]
hw/arm/mps2-tz.c: Add extra data parameter to MakeDevFn
The mps2-tz boards use a data-driven structure to create the devices
that sit behind peripheral protection controllers. Currently the
functions which create these devices are passed an 'opaque' pointer
which is always the address within the machine struct of the device
to create, and some "all devices need this" information like irqs and
addresses.
If a specific device needs more information than this, it is
currently not possible to pass that through from the PPCInfo
data structure. Add support for passing an extra data parameter,
so that we can more flexibly handle the needs of specific
device types. To provide some type-safety we make this extra
parameter a pointer to a union (which initially has no members).
In particular, we would like to be able to indicate which of the
i2c controllers are for on-board devices only and which are
connected to the external 'shield' expansion port; a subsequent
patch will use this mechanism for that purpose.
Peter Maydell [Mon, 13 Sep 2021 15:07:25 +0000 (16:07 +0100)]
qdev: Support marking individual buses as 'full'
By default, QEMU will allow devices to be plugged into a bus up to
the bus class's device count limit. If the user creates a device on
the command line or via the monitor and doesn't explicitly specify
the bus to plug it in, QEMU will plug it into the first non-full bus
that it finds.
This is fine in most cases, but some machines have multiple buses of
a given type, some of which are dedicated to on-board devices and
some of which have an externally exposed connector for user-pluggable
devices. One example is I2C buses.
Provide a new function qbus_mark_full() so that a machine model can
mark this kind of "internal only" bus as 'full' after it has created
all the devices that should be plugged into that bus. The "find a
non-full bus" algorithm will then skip the internal-only bus when
looking for a place to plug in user-created devices.
Peter Maydell [Mon, 13 Sep 2021 15:07:24 +0000 (16:07 +0100)]
target/arm: Take an exception if PSTATE.IL is set
In v8A, the PSTATE.IL bit is set for various kinds of illegal
exception return or mode-change attempts. We already set PSTATE.IL
(or its AArch32 equivalent CPSR.IL) in all those cases, but we
weren't implementing the part of the behaviour where attempting to
execute an instruction with PSTATE.IL takes an immediate exception
with an appropriate syndrome value.
Add a new TB flags bit tracking PSTATE.IL/CPSR.IL, and generate code
to take an exception instead of whatever the instruction would have
been.
PSTATE.IL and CPSR.IL change only on exception entry, attempted
exception exit, and various AArch32 mode changes via cpsr_write().
These places generally already rebuild the hflags, so the only place
we need an extra rebuild_hflags call is in the illegal-return
codepath of the AArch64 exception_return helper.
Included creation of ITS as part of virt platform GIC
initialization. This Emulated ITS model now co-exists with kvm
ITS and is enabled in absence of kvm irq kernel support in a
platform.
Implemented lpi processing at redistributor to get lpi config info
from lpi configuration table,determine priority,set pending state in
lpi pending table and forward the lpi to cpuif.Added logic to invoke
redistributor lpi processing with translated LPI which set/clear LPI
from ITS device as part of ITS INT,CLEAR,DISCARD command and
GITS_TRANSLATER processing.
Added properties to enable ITS feature and define qemu system
address space memory in gicv3 common,setup distributor and
redistributor registers to indicate LPI support.
Added ITS command queue handling for MAPTI,MAPI commands,handled ITS
translation which triggers an LPI via INT command as well as write
to GITS_TRANSLATER register,defined enum to differentiate between ITS
command interrupt trigger and GITS_TRANSLATER based interrupt trigger.
Each of these commands make use of other functionalities implemented to
get device table entry,collection table entry or interrupt translation
table entry required for their processing.
Added functionality to trigger ITS command queue processing on
write to CWRITE register and process each command queue entry to
identify the command type and handle commands like MAPD,MAPC,SYNC.
Defined descriptors for ITS device table,collection table and ITS
command queue entities.Implemented register read/write functions,
extract ITS table parameters and command queue parameters,extended
gicv3 common to capture qemu address space(which host the ITS table
platform memories required for subsequent ITS processing) and
initialize the same in ITS device.
Added register definitions relevant to ITS,implemented overall
ITS device framework with stubs for ITS control and translater
regions read/write,extended ITS common to handle mmio init between
existing kvm device and newer qemu device.
Marc Zyngier [Mon, 13 Sep 2021 15:07:22 +0000 (16:07 +0100)]
hw/arm/virt: KVM: Probe for KVM_CAP_ARM_VM_IPA_SIZE when creating scratch VM
Although we probe for the IPA limits imposed by KVM (and the hardware)
when computing the memory map, we still use the old style '0' when
creating a scratch VM in kvm_arm_create_scratch_host_vcpu().
On systems that are severely IPA challenged (such as the Apple M1),
this results in a failure as KVM cannot use the default 40bit that
'0' represents.
Instead, probe for the extension and use the reported IPA limit
if available.
Bin Meng [Mon, 13 Sep 2021 15:07:21 +0000 (16:07 +0100)]
hw/char: cadence_uart: Log a guest error when device is unclocked or in reset
We've got SW that expects FSBL (Bootlooader) to setup clocks and
resets. It's quite common that users run that SW on QEMU without
FSBL (FSBL typically requires the Xilinx tools installed). That's
fine, since users can stil use -device loader to enable clocks etc.
To help folks understand what's going, a log (guest-error) message
would be helpful here. In particular with the serial port since
things will go very quiet if they get things wrong.
Bin Meng [Mon, 13 Sep 2021 15:07:21 +0000 (16:07 +0100)]
hw/char: cadence_uart: Ignore access when unclocked or in reset for uart_{read, write}()
Read or write to uart registers when unclocked or in reset should be
ignored. Add the check there, and as a result of this, the check in
uart_write_tx_fifo() is now unnecessary.
Bin Meng [Mon, 13 Sep 2021 15:07:20 +0000 (16:07 +0100)]
hw/misc: zynq_slcr: Correctly compute output clocks in the reset exit phase
As of today, when booting upstream U-Boot for Xilinx Zynq, the UART
does not receive anything. Debugging shows that the UART input clock
frequency is zero which prevents the UART from receiving anything as
per the logic in uart_receive().
From zynq_slcr_reset_exit() comment, it intends to compute output
clocks according to ps_clk and registers. zynq_slcr_compute_clocks()
is called to accomplish the task, inside which device_is_in_reset()
is called to actually make the attempt in vain.
Rework reset_hold() and reset_exit() so that in the reset exit phase,
the logic can really compute output clocks in reset_exit().
With this change, upstream U-Boot boots properly again with:
* 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
...
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.
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.
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.
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.
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.
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.
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.
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.
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.
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 <[email protected]>
Message-Id: <20210721152651[email protected]> Signed-off-by: Paolo Bonzini <[email protected]>
In this commit CR4_RESERVED_MASK is missing CR4_LA57_MASK and
two others. Adding this lets Fedora kernels boot once again.
* 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
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 <[email protected]>" [unknown]
# gpg: aka "Warner Losh <[email protected]>" [unknown]
# gpg: aka "Warner Losh <[email protected]>" [unknown]
# gpg: aka "Warner Losh <[email protected]>" [unknown]
# gpg: aka "Warner Losh <[email protected]>" [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
...
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.
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".
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.
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.
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.
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.
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.
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.
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.
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.
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.
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.
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")"
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.
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.
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.
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.
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
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.
* 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
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()
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