preadv/pwritev accept low and high parts of file offset in two separate
parameters. When host bitness doesn't match guest bitness these parts
must be appropriately recombined.
Introduce target_to_host_low_high that does this recombination and use
it in preadv/pwritev syscalls.
This fixes glibc testsuite test misc/tst-preadvwritev64.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Sparc as an extended sigaction structure containing
the field ka_restorer used in place of sa_restorer.
Define TARGET_ARCH_HAS_KA_RESTORER and use it
with sparc.
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180402102453.9883-2-laurent@vivier.eu>
fadvise64_64 on xtensa passes advice as the second argument and so must
be handled similar to PPC.
This fixes glibc testsuite tests posix/tst-posix_fadvise and
posix/tst-posix_fadvise64.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
host_to_target_timespec may return error if target address could not be
locked, but it is ignored.
Propagate return value of host_to_target_timespec to the caller of
clock_gettime.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
mq_getsetattr implementation does not set errno correctly in case of
error. Also in the presence of both 2nd and 3rd arguments it calls both
mq_getattr and mq_setattr, whereas only the latter call would suffice.
Don't call mq_getattr in the presence of the 2nd argument. Don't copy
output back to user in case of error. Use get_errno to set errno value.
This fixes test rt/tst-mqueue2 from the glibc testsuite.
Cc: Lionel Landwerlin <lionel.landwerlin@openwide.fr>
Cc: Kirill A. Shutemov <kirill.shutemov@linux.intel.com>
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Aurelien Jarno <aurelien@aurel32.net>
Cc: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
cpu_copy adds newly created CPU object to container/machine/unattached,
but does it w/o proper locking. As a result when multiple threads create
threads rapidly QEMU may abort with the following message:
GLib-CRITICAL **: g_hash_table_iter_next: assertion
'ri->version == ri->hash_table->version' failed
ERROR:qemu/qom/object.c:1663:object_get_canonical_path_component:
code should not be reached
E.g. this issue is observed when running glibc test nptl/tst-eintr1.
Move cpu_copy invocation under clone_lock to fix that.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
- small cleanup for xtensa registers dumping (-d cpu);
- add support for debugging linux-user process with xtensa-linux-gdb
(as opposed to xtensa-elf-gdb), which can only access unprivileged
registers;
- enable MTTCG for target/xtensa;
- cleanup in linux-user/mmap area making sure that it works correctly
with limited 30-bit-wide user address space;
- import xtensa-specific definitions from the linux kernel,
conditionalize user-only/softmmu-only code and add handlers for
signals, exceptions, process/thread creation and core registers dumping.
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Merge remote-tracking branch 'remotes/xtensa/tags/20180316-xtensa' into staging
target/xtensa linux-user support.
- small cleanup for xtensa registers dumping (-d cpu);
- add support for debugging linux-user process with xtensa-linux-gdb
(as opposed to xtensa-elf-gdb), which can only access unprivileged
registers;
- enable MTTCG for target/xtensa;
- cleanup in linux-user/mmap area making sure that it works correctly
with limited 30-bit-wide user address space;
- import xtensa-specific definitions from the linux kernel,
conditionalize user-only/softmmu-only code and add handlers for
signals, exceptions, process/thread creation and core registers dumping.
# gpg: Signature made Fri 16 Mar 2018 16:46:19 GMT
# gpg: using RSA key 51F9CC91F83FA044
# gpg: Good signature from "Max Filippov <filippov@cadence.com>"
# gpg: aka "Max Filippov <max.filippov@cogentembedded.com>"
# gpg: aka "Max Filippov <jcmvbkbc@gmail.com>"
# Primary key fingerprint: 2B67 854B 98E5 327D CDEB 17D8 51F9 CC91 F83F A044
* remotes/xtensa/tags/20180316-xtensa:
MAINTAINERS: fix W: address for xtensa
qemu-binfmt-conf.sh: add qemu-xtensa
target/xtensa: add linux-user support
linux-user: drop unused target_msync function
linux-user: fix target_mprotect/target_munmap error return values
linux-user: fix assertion in shmdt
linux-user: fix mmap/munmap/mprotect/mremap/shmat
target/xtensa: support MTTCG
target/xtensa: use correct number of registers in gdbstub
target/xtensa: mark register windows in the dump
target/xtensa: dump correct physical registers
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
# Conflicts:
# linux-user/syscall.c
Import list of syscalls from the kernel source. Conditionalize code/data
that is only used with softmmu. Implement exception handlers. Implement
signal hander (only the core registers for now, no coprocessors or TIE).
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
In linux-user QEMU that runs for a target with TARGET_ABI_BITS bigger
than L1_MAP_ADDR_SPACE_BITS an assertion in page_set_flags fires when
mmap, munmap, mprotect, mremap or shmat is called for an address outside
the guest address space. mmap and mprotect should return ENOMEM in such
case.
Change definition of GUEST_ADDR_MAX to always be the last valid guest
address. Account for this change in open_self_maps.
Add macro guest_addr_valid that verifies if the guest address is valid.
Add function guest_range_valid that verifies if address range is within
guest address space and does not wrap around. Use that macro in
mmap/munmap/mprotect/mremap/shmat for error checking.
Cc: qemu-stable@nongnu.org
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
In linux-user QEMU that runs for a target with TARGET_ABI_BITS bigger
than L1_MAP_ADDR_SPACE_BITS an assertion in page_set_flags fires when
mmap, munmap, mprotect, mremap or shmat is called for an address outside
the guest address space. mmap and mprotect should return ENOMEM in such
case.
Change definition of GUEST_ADDR_MAX to always be the last valid guest
address. Account for this change in open_self_maps.
Add macro guest_addr_valid that verifies if the guest address is valid.
Add function guest_range_valid that verifies if address range is within
guest address space and does not wrap around. Use that macro in
mmap/munmap/mprotect/mremap/shmat for error checking.
Cc: qemu-stable@nongnu.org
Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180307215010.30706-1-jcmvbkbc@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
As an implementation choice, widening VL has zeroed the
previously inaccessible portion of the sve registers.
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20180303143823.27055-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Implementation of linux user emulation for RISC-V.
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Sagar Karandikar <sagark@eecs.berkeley.edu>
Signed-off-by: Michael Clark <mjc@sifive.com>
We properly computed the capped mask size to be put to the application
buffer, but didn't actually used it. Also, we need to return the capped mask
size instead of 0 on success.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180211174704.27441-1-samuel.thibault@ens-lyon.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
With glibc 2.27 the openpty function prefers the TIOCGPTPEER ioctl.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvmbmhdosb9.fsf_-_@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Clean up includes so that osdep.h is included first and headers
which it implies are not included manually.
This commit was created with scripts/clean-includes, with the change
to target/s390x/gen-features.c manually reverted, and blank lines
around deletions collapsed.
Reviewed-by: Eric Blake <eblake@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20180201111846.21846-3-armbru@redhat.com>
We dropped support for ia64 host CPUs in the 2.11 release (removing
the TCG backend for it, and advertising the support as being
completely removed in the changelog). However there are a few bits
and pieces of code still floating about. Remove those, too.
We can drop the check in configure for "ia64 or hppa host?"
entirely, because we don't support hppa hosts either any more.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1516897189-11035-1-git-send-email-peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This is needed for new architectures like RISC-V which do not provide any
other rename-like syscall.
Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvm607su9qs.fsf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
sched_get/setaffinity linux-user syscalls were missing conversions for
little/big endian, which is hairy since longs may not be the same size
either.
For simplicity, this just introduces loops to convert bit by bit like is
done for select.
Signed-off-by: Samuel Thibault <samuel.thibault@ens-lyon.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180109201643.1479-1-samuel.thibault@ens-lyon.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The third argument to dup3() is a flags word which may be
O_CLOEXEC. We weren't translating this flag from target to
host value, which meant that if the target used a different
value from the host (eg sparc guest and x86 host) the dup3()
call would fail EINVAL. Do the correct translation.
Fixes: https://bugs.launchpad.net/qemu/+bug/1704658
Reported-by: Bruno Haible <bruno@clisp.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1513351080-25917-1-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The Linux struct cmsghdr is already guaranteed to be sufficiently
aligned that CMSG_ALIGN(sizeof struct cmsghdr) is always equal
to sizeof struct cmsghdr. Stop doing the unnecessary alignment
arithmetic for host and target cmsghdr.
This follows kernel commit 1ff8cebf49ed9e9ca2 and brings our
TARGET_CMSG_* macros back into line with the kernel ones,
as well as making them easier to understand.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1513345976-22958-3-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
The handling of length calculations in host_to_target_cmsg()
was rather confused:
* when checking for whether the target cmsg header fit in
the remaining buffer, we were using the host struct size,
not the target size
* we were setting tgt_len to "target payload + header length"
but then using it as if it were the target payload length alone
* in various message type cases we weren't handling the possibility
that host or target buffers were truncated
Fix these problems. The second one in particular is liable
to result in us overrunning the guest provided buffer,
since we will try to convert more data than is actually
present.
Fixes: https://bugs.launchpad.net/qemu/+bug/1701808
Reported-by: Bruno Haible <bruno@clisp.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1513345976-22958-2-git-send-email-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
SPARC is like Alpha in its handling of the rt_sigaction syscall:
it takes an extra parameter 'restorer' which needs to be copied
into the sa_restorer field of the sigaction struct. The order
of the arguments differs slightly between SPARC and Alpha but
the implementation is otherwise the same. (Compare the
rt_sigaction() functions in arch/sparc/kernel/sys_sparc_64.c
and arch/alpha/kernel/signal.c.)
Note that this change is somewhat moot until SPARC acquires
support for actually delivering RT signals.
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
If an application tries to install a seccomp filter using
prctl(PR_SET_SECCOMP), the filter is likely for the target instead of the host
architecture. This will probably cause qemu to be immediately killed when it
executes another syscall.
Prevent this from happening by returning EINVAL from both seccomp prctl
calls. This is the error returned by the kernel when seccomp support is
disabled.
Fixes: https://bugs.launchpad.net/qemu/+bug/1726394
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: James Cowgill <james.cowgill@mips.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Fixes: https://bugs.launchpad.net/qemu/+bug/1716767
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-By: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: James Clarke <jrtc27@jrtc27.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Add the missing defines and for TARGET_MAP_STACK and TARGET_MAP_HUGETLB
for alpha, mips, ppc, x86, hppa. Fix the mmap_flags translation table
to translate MAP_HUGETLB between host and target architecture, and to
drop MAP_STACK.
Signed-off-by: Helge Deller <deller@gmx.de>
Message-Id: <20170311183016.GA20514@ls3530.fritz.box>
[rth: Drop MAP_STACK instead of translating it, since it is ignored
in the kernel anyway. Fix tabs to spaces.]
Signed-off-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
This enables parallel TCG code generation. However, we do not take
advantage of it yet since tb_lock is still held during tb_gen_code.
In user-mode we use a single TCG context; see the documentation
added to tcg_region_init for the rationale.
Note that targets do not need any conversion: targets initialize a
TCGContext (e.g. defining TCG globals), and after this initialization
has finished, the context is cloned by the vCPU threads, each of
them keeping a separate copy.
TCG threads claim one entry in tcg_ctxs[] by atomically increasing
n_tcg_ctxs. Do not be too annoyed by the subsequent atomic_read's
of that variable and tcg_ctxs; they are there just to play nice with
analysis tools such as thread sanitizer.
Note that we do not allocate an array of contexts (we allocate
an array of pointers instead) because when tcg_context_init
is called, we do not know yet how many contexts we'll use since
the bool behind qemu_tcg_mttcg_enabled() isn't set yet.
Previous patches folded some TCG globals into TCGContext. The non-const
globals remaining are only set at init time, i.e. before the TCG
threads are spawned. Here is a list of these set-at-init-time globals
under tcg/:
Only written by tcg_context_init:
- indirect_reg_alloc_order
- tcg_op_defs
Only written by tcg_target_init (called from tcg_context_init):
- tcg_target_available_regs
- tcg_target_call_clobber_regs
- arm: arm_arch, use_idiv_instructions
- i386: have_cmov, have_bmi1, have_bmi2, have_lzcnt,
have_movbe, have_popcnt
- mips: use_movnz_instructions, use_mips32_instructions,
use_mips32r2_instructions, got_sigill (tcg_target_detect_isa)
- ppc: have_isa_2_06, have_isa_3_00, tb_ret_addr
- s390: tb_ret_addr, s390_facilities
- sparc: qemu_ld_trampoline, qemu_st_trampoline (build_trampolines),
use_vis3_instructions
Only written by tcg_prologue_init:
- 'struct jit_code_entry one_entry'
- aarch64: tb_ret_addr
- arm: tb_ret_addr
- i386: tb_ret_addr, guest_base_flags
- ia64: tb_ret_addr
- mips: tb_ret_addr, bswap32_addr, bswap32u_addr, bswap64_addr
Reviewed-by: Richard Henderson <rth@twiddle.net>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Since O_TMPFILE might differ between guest and host,
add it to the bitmask_transtbl. While at it, fix the definitions
of O_DIRECTORY etc which should arm32 according to kernel sources.
This fixes open14 and openat03 ltp testcases. Fixes:
https://bugs.launchpad.net/qemu/+bug/1709170
This reverts commit a59629fcc6.
This is not needed anymore because the IOThread mutex is not
"magic" anymore (need not kick the CPU thread)and also because
fork callbacks are only enabled at the very beginning of
QEMU's execution.
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
This reverts commit bc658e4a2e.
Some versions of gcc warn about this:
linux-user/syscall.c: In function ‘do_ioctl_rt’:
linux-user/syscall.c:5577:37: error: ‘host_rt_dev_ptr’ may be used uninitialized in this function [-Werror=uninitialized]
and in particular the Travis builds fail; they use
gcc (Ubuntu/Linaro 4.6.3-1ubuntu5) 4.6.3.
Revert the change to fix the travis builds.
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
linux-user/syscall.c:1627:35: warning: 1st function call argument is an uninitialized value
target_saddr->sa_family = tswap16(addr->sa_family);
^~~~~~~~~~~~~~~~~~~~~~~~
linux-user/syscall.c:1629:25: warning: The left operand of '==' is a garbage value
if (addr->sa_family == AF_NETLINK && len >= sizeof(struct sockaddr_nl)) {
~~~~~~~~~~~~~~~ ^
Reported-by: Clang Static Analyzer
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
This was only used by the gdbstub and even then was only being set for
subsequent threads. Rather the continue duplicating the number just
make the gdbstub get the information from TaskState structure.
Now the tid is correctly reported for all threads the bug I was seeing
with "vCont;C04:0;c" packets is fixed as the correct tid is reported
to gdb.
I moved cpu_gdb_index into the gdbstub to facilitate easy access to
the TaskState which is used elsewhere in gdbstub.
To prevent BSD failing to build I've included ts_tid into its
TaskStruct but not populated it - which was the same state as the old
cpu->host_tid. I'll leave it up to the BSD maintainers to actually
populate this properly if they want a working gdbstub with
user-threads.
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Claudio Imbrenda <imbrenda@linux.vnet.ibm.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20170712105216.747-4-alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Add a new system call: rt_tgsigqueueinfo().
This system call is similar to rt_sigqueueinfo(), but instead of
sending the signal and data to the whole thread group with the ID
equal to the argument tgid, it sends it to a single thread within
that thread group. The ID of the thread is specified by the tid
argument.
The implementation is based on the rt_sigqueueinfo() in linux-user
mode, where the tid is added as the second argument and the
previous second and third argument become arguments three and four,
respectively.
Signed-off-by: Miloš Stojanović <Milos.Stojanovic@rt-rk.com>
Conflicts:
linux-user/syscall.c
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Change the type of the first argument of rt_sigqueinfo() from int to pid_t
in the syscall declaration to match specifications of the system call.
Proper spacing is added to satisfy checkpatch.pl.
Signed-off-by: Miloš Stojanović <Milos.Stojanovic@rt-rk.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Change the unlock_user() argument from arg1 to arg3 to match with
lock_user(), since arg3 contains the pointer to the siginfo_t structure.
Signed-off-by: Miloš Stojanović <Milos.Stojanovic@rt-rk.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
Fix the ssetmask() system call by removing the invocation of sigorset().
The ssetmask() system call should replace the old signal mask
with the new and return the old mask. It shouldn't combine
the old and the new mask with sigorset(). Fetching the old
mask for sigorset() is also no longer needed.
The problem was detected after running LTP test group syscalls
for the MIPS EL 32 R2 architecture where the test ssetmask01 failed
with exit code 1. The test passes now that the ssetmask() system call
is fixed.
Signed-off-by: Miloš Stojanović <Milos.Stojanovic@rt-rk.com>
Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
