The original value of frame_addr is still required for
its use in the call to unlock_user_struct below.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-13-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
In order to properly present these arguments, we need to add
code to target/s390x to record LowCore parameters for user-only.
But in the meantime, at least zero the missing last_break
argument, and fixup the comment style in the vicinity.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-12-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Note that PSW_ADDR_{64,32} are called PSW_MASK_{EA,BA}
in the kernel source.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-11-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The "save" routines copied from the kernel, which are currently
commented out, are unnecessary in qemu. We can copy from env
where the kernel needs special instructions. Fix comment style.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-9-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Using the host address of &frame->sregs is incorrect.
We need the guest address.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Directly reading sc->regs.psw.addr misses the bswap
that may be performed by __get_user.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The function cannot fail.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This is an unnecessary complication since we only
support 64-bit mode.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Using the right type simplifies the frame setup.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Noticed via gitlab clang-user job:
TEST signals on s390x
../linux-user/s390x/signal.c:258:9: runtime error: \
1.84467e+19 is outside the range of representable values of \
type 'unsigned long'
Which points to the fact that we were performing a double-to-uint64_t
conversion while storing the fp registers, instead of just copying
the data across.
Turns out there are several errors:
target_ulong is the size of the target register, whereas abi_ulong
is the target 'unsigned long' type. Not a big deal here, since we
only support 64-bit s390x, but not correct either.
In target_sigcontext and target ucontext, we used a host pointer
instead of a target pointer, aka abi_ulong.
Fixing this allows the removal of a cast to __put_user.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: David Hildenbrand <david@redhat.com>
Message-Id: <20210428193408.233706-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
It passes now that we support signals properly.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-26-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The shape of the kernel's __siginfo_fpu_t is dependent on
the cpu type, not the abi. Which is weird, but there ya go.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-23-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Check that the input sp is 16 byte aligned, not 4.
Do that before the lock_user_struct check.
Validate the saved sp is 8 byte aligned.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-22-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Clean up a goto label with a single use. Remove #if 0.
Remove useless parentheses. Fold constants into __put_user.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-21-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Stub it out to zero, but at least include it.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-20-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Replace __siginfo_t with target_pt_regs, and move si_mask
into target_signal_frame directly.
Extract save/restore functions for target_pt_regs. Adjust
for sparc64 tstate. Use proper get/put functions for psr.
Turns out we were already writing to si_mask twice, so no
need to handle that in the new functions.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-16-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Move target_reg_window up and use it. Fold structptr and xxargs
into xargs -- the use of a host pointer was incorrect anyway.
Rename the structure to target_stackf for consistency.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-15-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
All of the source and header files already defer to sparc
via #include. The syscall.tbl and syscallhdr.sh files
could not do the same, but are identical.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-12-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
There are only a few differences in sparc32 vs sparc64.
This fixes target_shmlba for sparc32plus, which is v9.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-8-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Share code between sparc32 and sparc64, removing a bit of pointless
difference wrt psr/tstate. Use sizeof(abi_ulong) for allocating
initial register window. Use TARGET_STACK_BIAS.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Move TARGET_STACK_BIAS from signal.c. Generic code cares about the
logical stack pointer, not the physical one that has a bias applied
for sparc64.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
In most cases we were already passing get_sp_from_cpustate
directly to the function. In other cases, we were passing
a local variable which already contained the same value.
In the rest of the cases, we were passing the stack pointer
out of env directly.
Reviewed by: Warner Losh <imp@bsdimp.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Now that we have exactly one call, it's easy to pass
in env instead of passing in the sp value.
Use target_save_altstack, which required env.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Note that target_restore_altstack uses the host memory
pointer that we have already verified, so TARGET_EFAULT
is not a possible return value.
Note that using -EFAULT was a bug.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Create a function to match target_save_altstack.
Fix some style and unlock issues in do_sigaltstack.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20210426025334.1168495-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Some target are using llseek instead of _llseek like riscv,
nios2, hexagon, and openrisc.
Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210512101358.122781-1-kito.cheng@sifive.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Use bit masking instead of an if tree.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210423165413.338259-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
There is no such decoding in linux/arch/arm/nwfpe/fpmodule.c.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210423165413.338259-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Pull out the fpa11 emulation to a helper function.
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20210423165413.338259-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Syscall unshare did not have custom print function for strace, but it's argument is same as flags in clone syscall, so it can be easily implemented.
Also updated missing flags from clone_flags.
Signed-off-by: Matus Kysel <mkysel@tachyum.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20210406144203.1020598-1-mkysel@tachyum.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
We can not use watchpoints in user-mode emulation because we
need the softmmu slow path to detect accesses to watchpointed
memory. This code is expanded as empty stub in "hw/core/cpu.h"
anyway, so we can drop it.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20210303214708.1727801-18-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
As it's only used inside hw/virtio/vhost-vdpa.c.
Signed-off-by: Zenghui Yu <yuzenghui@huawei.com>
Message-Id: <20210413133737.1574-1-yuzenghui@huawei.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This patch adds ioeventfd flag for virtio-mmio configuration.
It allows switching ioeventfd on and off.
Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Message-Id: <161700379211.1135943.8859209566937991305.stgit@pasha-ThinkPad-X280>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Type 41 defines the attributes of devices that are onboard. The
original intent was to imply the BIOS had some level of control over
the enablement of the associated devices.
If network devices are present in this table, by default, udev will
name the corresponding interfaces enoX, X being the instance number.
Without such information, udev will fallback to using the PCI ID and
this usually gives ens3 or ens4. This can be a bit annoying as the
name of the network card may depend on the order of options and may
change if a new PCI device is added earlier on the commande line.
Being able to provide SMBIOS type 41 entry ensure the name of the
interface won't change and helps the user guess the right name without
booting a first time.
This can be invoked with:
$QEMU -netdev user,id=internet
-device virtio-net-pci,mac=50:54:00:00:00:42,netdev=internet,id=internet-dev \
-smbios type=41,designation='Onboard LAN',instance=1,kind=ethernet,pcidev=internet-dev
The PCI segment is assumed to be 0. This should hold true for most
cases.
$ dmidecode -t 41
# dmidecode 3.3
Getting SMBIOS data from sysfs.
SMBIOS 2.8 present.
Handle 0x2900, DMI type 41, 11 bytes
Onboard Device
Reference Designation: Onboard LAN
Type: Ethernet
Status: Enabled
Type Instance: 1
Bus Address: 0000:00:09.0
$ ip -brief a
lo UNKNOWN 127.0.0.1/8 ::1/128
eno1 UP 10.0.2.14/24 fec0::5254:ff:fe00:42/64 fe80::5254:ff:fe00:42/64
Signed-off-by: Vincent Bernat <vincent@bernat.ch>
Message-Id: <20210401171138.62970-1-vincent@bernat.ch>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>