Commit Graph

2314 Commits

Author SHA1 Message Date
Richard Henderson
29a0af618d cpu: Replace ENV_GET_CPU with env_cpu
Now that we have both ArchCPU and CPUArchState, we can define
this generically instead of via macro in each target's cpu.h.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Acked-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-06-10 07:03:34 -07:00
David Hildenbrand
6d88baf186 linux-user: elf: ELF_HWCAP for s390x
Let's add all HWCAPs that we can support under TCG right now, when the
respective CPU facilities are enabled.

Cc: Riku Voipio <riku.voipio@iki.fi>
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: Cornelia Huck <cohuck@redhat.com>
Cc: Laurent Vivier <laurent@vivier.eu>
Cc: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
2019-06-07 14:53:26 +02:00
David Hildenbrand
4f83d7d212 s390x: Use uint64_t for vector registers
CPU_DoubleU is primarily used to reinterpret between integer and floats.
We don't really need this functionality. So let's just keep it simple
and use an uint64_t.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: David Hildenbrand <david@redhat.com>
2019-06-07 14:53:25 +02:00
Peter Maydell
8c1ecb5904 Various testing updates
- semihosting re-factor (used in system tests)
   - aarch64 and alpha system tests
   - editorconfig tweak for .S
   - some docker image updates
   - iotests clean-up (without make check inclusion)
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-testing-next-280519-2' into staging

Various testing updates

  - semihosting re-factor (used in system tests)
  - aarch64 and alpha system tests
  - editorconfig tweak for .S
  - some docker image updates
  - iotests clean-up (without make check inclusion)

# gpg: Signature made Tue 28 May 2019 17:26:34 BST
# gpg:                using RSA key 6685AE99E75167BCAFC8DF35FBD0DB095A9E2A44
# gpg: Good signature from "Alex Bennée (Master Work Key) <alex.bennee@linaro.org>" [full]
# Primary key fingerprint: 6685 AE99 E751 67BC AFC8  DF35 FBD0 DB09 5A9E 2A44

* remotes/stsquad/tags/pull-testing-next-280519-2: (27 commits)
  tests/qemu-iotests: re-format output to for make check-block
  tests/qemu-iotests/group: Re-use the "auto" group for tests that can always run
  Makefile.target: support per-target coverage reports
  Makefile: include per-target build directories in coverage report
  Makefile: fix coverage-report reference to BUILD_DIR
  .travis.yml: enable aarch64-softmmu and alpha-softmmu tcg tests
  tests/tcg/alpha: add system boot.S
  tests/tcg/multiarch: expand system memory test to cover more
  tests/tcg/minilib: support %c format char
  tests/tcg/multiarch: move the system memory test
  tests/tcg/aarch64: add system boot.S
  editorconfig: add settings for .s/.S files
  tests/tcg/multiarch: add hello world system test
  tests/tcg/multiarch: add support for multiarch system tests
  tests/docker: Test more components on the Fedora default image
  tests/docker: add ubuntu 18.04
  MAINTAINERS: update for semihostings new home
  target/mips: convert UHI_plog to use common semihosting code
  target/mips: only build mips-semi for softmmu
  target/arm: correct return values for WRITE/READ in arm-semi
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-28 17:38:32 +01:00
Peter Maydell
4a1d38c440 MIPS queue for May 19th, 2019 - v3
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Merge remote-tracking branch 'remotes/amarkovic/tags/mips-queue-may-19-2019-v3' into staging

MIPS queue for May 19th, 2019 - v3

# gpg: Signature made Sun 26 May 2019 17:07:07 BST
# gpg:                using RSA key D4972A8967F75A65
# gpg: Good signature from "Aleksandar Markovic <amarkovic@wavecomp.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: 8526 FBF1 5DA3 811F 4A01  DD75 D497 2A89 67F7 5A65

* remotes/amarkovic/tags/mips-queue-may-19-2019-v3:
  BootLinuxSshTest: Test some userspace commands on Malta
  target/mips: realign comments to fix checkpatch warnings
  target/mips: add or remove space to fix checkpatch errors
  linux-user: fix __NR_semtimedop undeclared error
  mips: Decide to map PAGE_EXEC in map_address
  target/mips: Refactor and fix INSERT.<B|H|W|D> instructions
  target/mips: Refactor and fix COPY_U.<B|H|W> instructions
  target/mips: Refactor and fix COPY_S.<B|H|W|D> instructions
  target/mips: Fix MSA instructions ST.<B|H|W|D> on big endian host
  target/mips: Fix MSA instructions LD.<B|H|W|D> on big endian host
  target/mips: Make the results of MOD_<U|S>.<B|H|W|D> the same as on hardware
  target/mips: Make the results of DIV_<U|S>.<B|H|W|D> the same as on hardware

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-28 12:25:20 +01:00
Alex Bennée
0dc077212f target/arm: use the common interface for WRITE0/WRITEC in arm-semi
Now we have a common semihosting console interface use that for our
string output. However ARM is currently unique in also supporting
semihosting for linux-user so we need to replicate the API in
linux-user. If other architectures gain this support we can move the
file later.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-28 10:28:50 +01:00
Laurent Vivier
86e636951d linux-user: fix __NR_semtimedop undeclared error
In current code, __NR_msgrcv and__NR_semtimedop are supposed to be
defined if __NR_msgsnd is defined.

But linux headers 5.2-rc1 for MIPS define __NR_msgsnd without defining
__NR_semtimedop and it breaks the QEMU build.

__NR_semtimedop is defined in asm-mips/unistd_n64.h and asm-mips/unistd_n32.h
but not in asm-mips/unistd_o32.h.

Commit d9cb433615 ("linux headers: update against Linux 5.2-rc1") has
updated asm-mips/unistd_o32.h and added __NR_msgsnd but not __NR_semtimedop.
It introduces __NR_semtimedop_time64 instead.

This patch fixes the problem by checking for each __NR_XXX symbol
before defining the corresponding syscall.

Fixes: d9cb433615 ("linux headers: update against Linux 5.2-rc1")
Reported-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Tested-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20190523175413.14448-1-laurent@vivier.eu>
2019-05-26 17:44:33 +02:00
Alistair Francis
77c62400e5
linux-user/riscv: Add the CPU type as a comment
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-05-24 12:09:23 -07:00
Peter Maydell
a7b21f6762 Add /proc/hardware and /proc/cpuinfo,
update SIOCXXX ioctls,
 fix shmat emulation,
 add nanoseconds in stat,
 init field fp_abi on mips
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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-4.1-pull-request' into staging

Add /proc/hardware and /proc/cpuinfo,
update SIOCXXX ioctls,
fix shmat emulation,
add nanoseconds in stat,
init field fp_abi on mips

# gpg: Signature made Fri 24 May 2019 12:24:36 BST
# gpg:                using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-4.1-pull-request:
  linux-user: Pass through nanosecond timestamp components for stat syscalls
  linux-user: Align mmap_find_vma to host page size
  linux-user: Fix shmat emulation by honoring host SHMLBA
  linux-user: Sanitize interp_info and, for mips only, init field fp_abi
  linux-user: Add support for SIOC<G|S>IFPFLAGS ioctls for all targets
  linux-user: Add support for SIOCSPGRP ioctl for all targets
  linux-user: Fix support for SIOCATMARK and SIOCGPGRP ioctls for xtensa
  linux-user: add pseudo /proc/hardware for m68k
  linux-user: add pseudo /proc/cpuinfo for sparc

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-24 12:47:49 +01:00
Chen-Yu Tsai
5f992db605 linux-user: Pass through nanosecond timestamp components for stat syscalls
Since Linux 2.6 the stat syscalls have mostly supported nanosecond
components for each of the file-related timestamps.

QEMU user mode emulation currently does not pass through the nanosecond
portion of the timestamp, even when the host system fills in the value.
This results in a mismatch when run on subsecond resolution filesystems
such as ext4 or XFS.

An example of this leading to inconsistency is cross-debootstraping a
full desktop root filesystem of Debian Buster. Recent versions of
fontconfig store the full timestamp (instead of just the second portion)
of the directory in its per-directory cache file, and checks this against
the directory to see if the cache is up-to-date. With QEMU user mode
emulation, the timestamp stored is incorrect, and upon booting the rootfs
natively, fontconfig discovers the mismatch, and proceeds to rebuild the
cache on the comparatively slow machine (low-power ARM vs x86). This
stalls the first attempt to open whatever application that incorporates
fontconfig.

This patch renames the "unused" padding trailing each timestamp element
to its nanosecond counterpart name if such an element exists in the
kernel sources for the given platform. Not all do. Then have the syscall
wrapper fill in the nanosecond portion if the host supports it, as
specified by the _POSIX_C_SOURCE and _XOPEN_SOURCE feature macros.

Recent versions of glibc only use stat64 and newfstatat syscalls on
32-bit and 64-bit platforms respectively. The changes in this patch
were tested by directly calling the stat, stat64 and newfstatat syscalls
directly, in addition to the glibc wrapper, on arm and aarch64 little
endian targets.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Message-Id: <20190522162147.26303-1-wens@kernel.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-24 13:16:21 +02:00
Richard Henderson
443b7505c6 linux-user: Align mmap_find_vma to host page size
This can avoid stack allocation failures for i386 guest
on ppc64 (64k page) host.

Suggested-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20190519201953.20161-14-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-24 13:16:21 +02:00
Richard Henderson
30ab9ef296 linux-user: Fix shmat emulation by honoring host SHMLBA
For those hosts with SHMLBA > getpagesize, we don't automatically
select a guest address that is compatible with the host.  We can
achieve this by boosting the alignment of guest_base and by adding
an extra alignment argument to mmap_find_vma.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20190519201953.20161-13-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-24 13:16:21 +02:00
Daniel Santos
abcac736c1 linux-user: Sanitize interp_info and, for mips only, init field fp_abi
Sanitize interp_info structure in load_elf_binary() and, for MIPS only,
init its field fp_abi to MIPS_ABI_FP_UNKNOWN. This fixes appearances of
"Unexpected FPU mode" message in some MIPS use cases. Currently, this
bug is a complete stopper for some MIPS binaries.

In load_elf_binary(), struct image_info interp_info is used without
being properly initialized. One result is that when the ELF's program
header doesn't contain an entry for the ABI flags, then the value of
the struct image_info's fp_abi field is set to whatever happened to
be in stack memory at the time.

Backporting to 4.0 and, if possible, to 3.1 is recommended.

Fixes: https://bugs.launchpad.net/qemu/+bug/1825002

Signed-off-by: Daniel Santos <daniel.santos@pobox.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1558282527-22183-6-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-22 20:50:55 +02:00
Neng Chen
4bdcd79e3e linux-user: Add support for SIOC<G|S>IFPFLAGS ioctls for all targets
Add support for getting and setting extended private flags of a
network device via SIOCSIFPFLAGS and SIOCGIFPFLAGS ioctls.

The ioctl numeric values are platform-independent and determined by
the file include/uapi/linux/sockios.h in Linux kernel source code:

  #define SIOCSIFPFLAGS 0x8934
  #define SIOCGIFPFLAGS	0x8935

These ioctls get (or set) the field ifr_flags of type short in the
structure ifreq. Such functionality is achieved in QEMU by using
MK_STRUCT() and MK_PTR() macros with an appropriate argument, as
it was done for existing similar cases.

Signed-off-by: Neng Chen <nchen@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1554839486-3527-1-git-send-email-aleksandar.markovic@rt-rk.com>
Message-Id: <1558282527-22183-4-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-22 20:50:55 +02:00
Aleksandar Markovic
c495a79340 linux-user: Add support for SIOCSPGRP ioctl for all targets
Add support for setting the process (or process group) to receive SIGIO
or SIGURG signals when I/O becomes possible or urgent data is available,
using SIOCSPGRP ioctl.

The ioctl numeric values for SIOCSPGRP are platform-dependent and are
determined by following files in Linux kernel source tree:

arch/ia64/include/uapi/asm/sockios.h:#define SIOCSPGRP    0x8902
arch/mips/include/uapi/asm/sockios.h:#define SIOCSPGRP    _IOW('s', 8, pid_t)
arch/parisc/include/uapi/asm/sockios.h:#define SIOCSPGRP  0x8902
arch/sh/include/uapi/asm/sockios.h:#define SIOCSPGRP      _IOW('s', 8, pid_t)
arch/xtensa/include/uapi/asm/sockios.h:#define SIOCSPGRP  _IOW('s', 8, pid_t)
arch/alpha/include/uapi/asm/sockios.h:#define SIOCSPGRP   _IOW('s', 8, pid_t)
arch/sparc/include/uapi/asm/sockios.h:#define SIOCSPGRP   0x8902
include/uapi/asm-generic/sockios.h:#define SIOCSPGRP      0x8902

Hence the different definition for alpha, mips, sh4, and xtensa.

Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1558282527-22183-3-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-22 20:50:55 +02:00
Aleksandar Markovic
d14eabbee9 linux-user: Fix support for SIOCATMARK and SIOCGPGRP ioctls for xtensa
Fix support for the SIOCATMARK and SIOCGPGRP ioctls for xtensa by
correcting corresponding macro definition.

Values for TARGET_SIOCATMARK and TARGET_SIOCGPGRP are determined by
Linux kernel. Following relevant lines (obtained by grep) are from
the kernel source tree:

arch/ia64/include/uapi/asm/sockios.h:#define SIOCATMARK    0x8905
arch/mips/include/uapi/asm/sockios.h:#define SIOCATMARK    _IOR('s', 7, int)
arch/parisc/include/uapi/asm/sockios.h:#define SIOCATMARK  0x8905
arch/sh/include/uapi/asm/sockios.h:#define SIOCATMARK      _IOR('s', 7, int)
arch/xtensa/include/uapi/asm/sockios.h:#define SIOCATMARK  _IOR('s', 7, int)
arch/alpha/include/uapi/asm/sockios.h:#define SIOCATMARK   _IOR('s', 7, int)
arch/sparc/include/uapi/asm/sockios.h:#define SIOCATMARK   0x8905
include/uapi/asm-generic/sockios.h:#define SIOCATMARK	   0x8905

arch/ia64/include/uapi/asm/sockios.h:#define SIOCGPGRP     0x8904
arch/mips/include/uapi/asm/sockios.h:#define SIOCGPGRP     _IOR('s', 9, pid_t)
arch/parisc/include/uapi/asm/sockios.h:#define SIOCGPGRP   0x8904
arch/sh/include/uapi/asm/sockios.h:#define SIOCGPGRP       _IOR('s', 9, pid_t)
arch/xtensa/include/uapi/asm/sockios.h:#define SIOCGPGRP   _IOR('s', 9, pid_t)
arch/alpha/include/uapi/asm/sockios.h:#define SIOCGPGRP    _IOR('s', 9, pid_t)
arch/sparc/include/uapi/asm/sockios.h:#define SIOCGPGRP    0x8904
include/uapi/asm-generic/sockios.h:#define SIOCGPGRP       0x8904

It is visible from above that xtensa should have the same definitions
as alpha, mips and sh4 already do. This patch brings QEMU to the accurate
state wrt these two ioctls.

Acked-by: Max Filippov <jcmvbkbc@gmail.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1558282527-22183-2-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-22 20:50:55 +02:00
Laurent Vivier
4ab6713ef6 linux-user: add pseudo /proc/hardware for m68k
Debian console-setup uses /proc/hardware to guess the keyboard layout.
If the file /proc/hardware cannot be opened, the installation fails.

This patch adds a pseudo /proc/hardware file to report the model of
the machine. Instead of reporting a known and fake model, it
reports "qemu-m68k", which is true, and avoids to set the configuration
for an Amiga/Apple/Atari and let the user to chose the good one.

Bug: https://github.com/vivier/qemu-m68k/issues/34
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20190517133149.19593-3-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-22 20:50:55 +02:00
Laurent Vivier
fff6938264 linux-user: add pseudo /proc/cpuinfo for sparc
SPARC libc6 debian package wants to check the cpu level to be
installed or not:

  WARNING: This machine has a SPARC V8 or earlier class processor.
  Debian lenny and later does not support such old hardware
  any longer.

To avoid this, it only needs to know if the machine type is sun4u or sun4v,
for that it reads the information from /proc/cpuinfo.

Fixes: 9a93c152fc
       ("linux-user: fix UNAME_MACHINE for sparc/sparc64")
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20190517133149.19593-2-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-22 20:50:55 +02:00
Richard Henderson
108b3ba891 target/arm: Put all PAC keys into a structure
This allows us to use a single syscall to initialize them all.

Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-22 12:38:54 -04:00
Richard Henderson
79743bdbcb linux-user: Remove srand call
We no longer use rand() within linux-user.

Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-22 12:38:54 -04:00
Richard Henderson
51977e25f7 linux-user/aarch64: Use qemu_guest_getrandom for PAUTH keys
Use a better interface for random numbers than rand() * 3.

Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-22 12:38:54 -04:00
Richard Henderson
c6a2377fb2 linux-user: Use qemu_guest_getrandom_nofail for AT_RANDOM
Use a better interface for random numbers than rand * 16.

Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-22 12:38:54 -04:00
Richard Henderson
a573e9bac6 linux-user: Call qcrypto_init if not using -seed
When not using -seed, we will use the crypto subsystem
for random numbers.

Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-22 12:38:54 -04:00
Richard Henderson
5ebdd77494 linux-user: Initialize pseudo-random seeds for all guest cpus
When the -seed option is given, call qemu_guest_random_seed_main,
putting the subsystem into deterministic mode.  Pass derived seeds
to each cpu created during clone; which is a no-op unless the
subsystem is in deterministic mode.

Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-22 12:38:54 -04:00
Richard Henderson
21ba856499 target/alpha: Fix user-only floating-point exceptions
Record the software fp control register, as set by the
osf_setsysinfo syscall.  Add those masked exceptions
to fpcr_exc_enable.  Do not raise a signal for masked
fp exceptions.

Fixes: https://bugs.launchpad.net/bugs/1701835
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-19 07:30:03 -07:00
Markus Armbruster
a8b991b52d Clean up ill-advised or unusual header guards
Leading underscores are ill-advised because such identifiers are
reserved.  Trailing underscores are merely ugly.  Strip both.

Our header guards commonly end in _H.  Normalize the exceptions.

Done with scripts/clean-header-guards.pl.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190315145123.28030-7-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
[Changes to slirp/ dropped, as we're about to spin it off]
2019-05-13 08:58:55 +02:00
Markus Armbruster
43e0c3515d linux-user/nios2 linux-user/riscv: Clean up header guards
Reuse of the same guard symbol in multiple headers is okay as long as
they cannot be included together.  scripts/clean-header-guards.pl
can't tell, so it warns.

Since we can avoid guard symbol reuse easily, do so: use guard symbol
${target^^}_${fname^^} for linux-user/$target/$fname, just like we did
in commit a9c94277f0..3500385697.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190315145123.28030-4-armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
2019-05-13 08:58:55 +02:00
Peter Maydell
5f022626c8 GPROF fixes, GCC9 fixes, SIOCGIFNAME fix, new IPV6 sockopts, elf fix
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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-4.1-pull-request' into staging

GPROF fixes, GCC9 fixes, SIOCGIFNAME fix, new IPV6 sockopts, elf fix

# gpg: Signature made Fri 10 May 2019 11:45:23 BST
# gpg:                using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full]
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>" [full]
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full]
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-4.1-pull-request:
  linux-user: fix GPROF build failure
  linux-user: avoid treading on gprof's SIGPROF signals
  linux-user: elf: Map empty PT_LOAD segments
  The ioctl(SIOCGIFNAME) call requires a struct ifreq.
  linux-user: avoid string truncation warnings in uname field copying
  linux-user/elfload: Fix GCC 9 build warnings
  linux-user: Add missing IPV6 sockopts

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-05-10 12:49:13 +01:00
Alex Bennée
9b21a36cd3 linux-user: fix GPROF build failure
When linux-user/exit was introduced we failed to move the gprof
include at the same time. The CI didn't notice because it only builds
system emulation. Fix it for those that still find gprof useful.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Message-Id: <20190502092728.32727-1-alex.bennee@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-10 12:44:23 +02:00
Alex Bennée
716cdbe0e8 linux-user: avoid treading on gprof's SIGPROF signals
The guest tends to get confused when it receives signals it doesn't
know about. Given the gprof magic has also set up it's own handler we
would do well to avoid stomping on it as well.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-Id: <20190502145846.26226-1-alex.bennee@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-10 12:44:23 +02:00
Giuseppe Musacchio
d87146bce0 linux-user: elf: Map empty PT_LOAD segments
Some PT_LOAD segments may be completely zeroed out and their p_filesize
is zero, in that case the loader should just allocate a page that's at
least p_memsz bytes large (plus eventual alignment padding).

Calling zero_bss does this job for us, all we have to do is make sure we
don't try to mmap a zero-length page.

Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20190503122007.lkjsvztgt4ycovac@debian>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-10 12:44:22 +02:00
Erik Kline
43330b7169 The ioctl(SIOCGIFNAME) call requires a struct ifreq.
Signed-off-by: Erik Kline <ek@google.com>
Buglink: https://bugs.launchpad.net/qemu/+bug/1814352
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20190423222005.246981-1-ek@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-10 12:44:00 +02:00
Daniel P. Berrangé
b2acfb5596 linux-user: avoid string truncation warnings in uname field copying
In file included from /usr/include/string.h:494,
                 from include/qemu/osdep.h:101,
                 from linux-user/uname.c:20:
In function ‘strncpy’,
    inlined from ‘sys_uname’ at linux-user/uname.c:94:3:
/usr/include/bits/string_fortified.h:106:10: warning: ‘__builtin_strncpy’ output may be truncated copying 64 bytes from a string of length 64 [-Wstringop-truncation]
  106 |   return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

We don't care where the NUL terminator in the original uname
field was. It suffices to copy the entire original field and
simply force a NUL terminator at the end of the new field.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190501144646.4851-1-berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-09 17:27:38 +02:00
Alistair Francis
d7eb2b928a linux-user/elfload: Fix GCC 9 build warnings
Fix this warning when building with GCC9 on Fedora 30:
In function ‘strncpy’,
    inlined from ‘fill_psinfo’ at /home/alistair/qemu/linux-user/elfload.c:3208:12,
    inlined from ‘fill_note_info’ at /home/alistair/qemu/linux-user/elfload.c:3390:5,
    inlined from ‘elf_core_dump’ at /home/alistair/qemu/linux-user/elfload.c:3539:9:
/usr/include/bits/string_fortified.h:106:10: error: ‘__builtin_strncpy’ specified bound 16 equals destination size [-Werror=stringop-truncation]
  106 |   return __builtin___strncpy_chk (__dest, __src, __len, __bos (__dest));
      |          ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <c4d2b1de9efadcf1c900b91361af9302823a72a9.1556666645.git.alistair.francis@wdc.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-09 17:27:38 +02:00
Helge Deller
b9cce6d756 linux-user: Add missing IPV6 sockopts
When running ssh over IPv6 with linux-user I faced this warning:
 Unsupported setsockopt level=41 optname=67
 setsockopt IPV6_TCLASS 32: Protocol not available:

This patch adds code to the linux-user emulatation for setting and
retrieving of a few missing IPV6 options, including IPV6_TCLASS.

Signed-off-by: Helge Deller <deller@gmx.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-05-09 17:27:38 +02:00
Thomas Huth
6faf2b6c4d target/sh4: Fix LGPL information in the file headers
It's either "GNU *Library* General Public License version 2" or "GNU
Lesser General Public License version *2.1*", but there was no "version
2.0" of the "Lesser" license. So assume that version 2.1 is meant here.

Message-Id: <1550073530-4138-1-git-send-email-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2019-05-08 17:45:54 +02:00
Thomas Huth
198a2d214f target/openrisc: Fix LGPL information in the file headers
It's either "GNU *Library* General Public License version 2" or "GNU
Lesser General Public License version *2.1*", but there was no "version
2.0" of the "Lesser" license. So assume that version 2.1 is meant here.

Acked-by: Stafford Horne <shorne@gmail.com>
Message-Id: <1550073577-4248-1-git-send-email-thuth@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2019-05-08 17:45:54 +02:00
Eduardo Habkost
c1c8cfe5f9 cpu: Rename parse_cpu_model() to parse_cpu_option()
The "model[,option...]" string parsed by the function is not just
a CPU model.  Rename the function and its argument to indicate it
expects the full "-cpu" option to be provided.

Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
Message-Id: <20190417025944.16154-2-ehabkost@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Eduardo Habkost <ehabkost@redhat.com>
2019-04-25 14:17:35 -03:00
Markus Armbruster
90c84c5600 qom/cpu: Simplify how CPUClass:cpu_dump_state() prints
CPUClass method dump_statistics() takes an fprintf()-like callback and
a FILE * to pass to it.  Most callers pass fprintf() and stderr.
log_cpu_state() passes fprintf() and qemu_log_file.
hmp_info_registers() passes monitor_fprintf() and the current monitor
cast to FILE *.  monitor_fprintf() casts it right back, and is
otherwise identical to monitor_printf().

The callback gets passed around a lot, which is tiresome.  The
type-punning around monitor_fprintf() is ugly.

Drop the callback, and call qemu_fprintf() instead.  Also gets rid of
the type-punning, since qemu_fprintf() takes NULL instead of the
current monitor cast to FILE *.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Message-Id: <20190417191805.28198-15-armbru@redhat.com>
2019-04-18 22:18:59 +02:00
Markus Armbruster
0442428a89 target: Simplify how the TARGET_cpu_list() print
The various TARGET_cpu_list() take an fprintf()-like callback and a
FILE * to pass to it.  Their callers (vl.c's main() via list_cpus(),
bsd-user/main.c's main(), linux-user/main.c's main()) all pass
fprintf() and stdout.  Thus, the flexibility provided by the (rather
tiresome) indirection isn't actually used.

Drop the callback, and call qemu_printf() instead.

Calling printf() would also work, but would make the code unsuitable
for monitor context without making it simpler.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-Id: <20190417191805.28198-10-armbru@redhat.com>
Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
2019-04-18 22:18:59 +02:00
Christophe Fergeau
f5852efa29 log: Make glib logging go through QEMU
This commit adds a error_init() helper which calls
g_log_set_default_handler() so that glib logs (g_log, g_warning, ...)
are handled similarly to other QEMU logs. This means they will get a
timestamp if timestamps are enabled, and they will go through the
HMP monitor if one is configured.

This commit also adds a call to error_init() to the binaries
installed by QEMU. Since error_init() also calls error_set_progname(),
this means that *-linux-user, *-bsd-user and qemu-pr-helper messages
output with error_report, info_report, ... will slightly change: they
will be prefixed by the binary name.

glib debug messages are enabled through G_MESSAGES_DEBUG similarly to
the glib default log handler.

At the moment, this change will mostly impact SPICE logging if your
spice version is >= 0.14.1. With older spice versions, this is not going
to work as expected, but will not have any ill effect, so this call is
not conditional on the SPICE version.

Signed-off-by: Christophe Fergeau <cfergeau@redhat.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-Id: <20190131164614.19209-3-cfergeau@redhat.com>
Reviewed-by: Markus Armbruster <armbru@redhat.com>
Signed-off-by: Markus Armbruster <armbru@redhat.com>
2019-04-17 19:08:27 +02:00
Daniel P. Berrangé
71ba74f67e linux-user: rename gettid() to sys_gettid() to avoid clash with glibc
The glibc-2.29.9000-6.fc31.x86_64 package finally includes the gettid()
function as part of unistd.h when __USE_GNU is defined. This clashes
with linux-user code which unconditionally defines this function name
itself.

/home/berrange/src/virt/qemu/linux-user/syscall.c:253:16: error: static declaration of ‘gettid’ follows non-static declaration
  253 | _syscall0(int, gettid)
      |                ^~~~~~
/home/berrange/src/virt/qemu/linux-user/syscall.c:184:13: note: in definition of macro ‘_syscall0’
  184 | static type name (void)   \
      |             ^~~~
In file included from /usr/include/unistd.h:1170,
                 from /home/berrange/src/virt/qemu/include/qemu/osdep.h:107,
                 from /home/berrange/src/virt/qemu/linux-user/syscall.c:20:
/usr/include/bits/unistd_ext.h:34:16: note: previous declaration of ‘gettid’ was here
   34 | extern __pid_t gettid (void) __THROW;
      |                ^~~~~~
  CC      aarch64-linux-user/linux-user/signal.o
make[1]: *** [/home/berrange/src/virt/qemu/rules.mak:69: linux-user/syscall.o] Error 1
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:449: subdir-aarch64-linux-user] Error 2

While we could make our definition conditional and rely on glibc's impl,
this patch simply renames our definition to sys_gettid() which is a
common pattern in this file.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190320161842.13908-3-berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-04-08 17:27:13 +02:00
Daniel P. Berrangé
184943d827 linux-user: assume __NR_gettid always exists
The gettid syscall was introduced in Linux 2.4.11. This is old enough
that we can assume it always exists and thus not bother with the
conditional backcompat logic.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190320161842.13908-2-berrange@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-04-08 17:26:44 +02:00
Markus Armbruster
dec9776049 trace-events: Fix attribution of trace points to source
Some trace points are attributed to the wrong source file.  Happens
when we neglect to update trace-events for code motion, or add events
in the wrong place, or misspell the file name.

Clean up with help of cleanup-trace-events.pl.  Same funnies as in the
previous commit, of course.  Manually shorten its change to
linux-user/trace-events to */signal.c.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Message-id: 20190314180929.27722-6-armbru@redhat.com
Message-Id: <20190314180929.27722-6-armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-03-22 16:18:07 +00:00
Markus Armbruster
500016e5db trace-events: Shorten file names in comments
We spell out sub/dir/ in sub/dir/trace-events' comments pointing to
source files.  That's because when trace-events got split up, the
comments were moved verbatim.

Delete the sub/dir/ part from these comments.  Gets rid of several
misspellings.

Signed-off-by: Markus Armbruster <armbru@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-id: 20190314180929.27722-3-armbru@redhat.com
Message-Id: <20190314180929.27722-3-armbru@redhat.com>
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
2019-03-22 16:18:07 +00:00
Kito Cheng
5836c3ecce
RISC-V: linux-user support for RVE ABI
This change checks elf_flags for EF_RISCV_RVE and if
present uses the RVE linux syscall ABI which uses t0
for the syscall number instead of a7.

Warn and exit if a non-RVE ABI binary is run on a
cpu with the RVE extension as it is incompatible.

Cc: Palmer Dabbelt <palmer@sifive.com>
Cc: Sagar Karandikar <sagark@eecs.berkeley.edu>
Cc: Bastian Koppelmann <kbastian@mail.uni-paderborn.de>
Cc: Alistair Francis <Alistair.Francis@wdc.com>
Co-authored-by: Kito Cheng <kito.cheng@gmail.com>
Co-authored-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-03-19 05:14:39 -07:00
Laurent Vivier
61b463fbf6 linux-user: add new netlink types
Add QEMU_IFLA_BR_VLAN_STATS_PER_PORT (from linux v4.20),
    QEMU_IFLA_BR_MULTI_BOOLOPT (from linux v5.0).

The first new entry fixes the following error:

  Unknown QEMU_IFLA_BR type 45

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190306200925.17605-1-laurent@vivier.eu>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-07 11:02:33 +01:00
Helge Deller
1b7695fe5f linux-user: Nicer strace output of chroot() syscall
Signed-off-by: Helge Deller <deller@gmx.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>

Message-Id: <20190227191115.GA20163@ls3530.dellerweb.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-07 10:57:29 +01:00
Marc-André Lureau
b78c522ab9 linux-user: fix "may be used uninitialized" warnings
Fixes:

/home/elmarco/src/qemu/linux-user/syscall.c: In function ‘do_ioctl_rt’:
/home/elmarco/src/qemu/linux-user/syscall.c:4773:9: error: ‘host_rt_dev_ptr’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
     if (*host_rt_dev_ptr != 0) {
         ^~~~~~~~~~~~~~~~
/home/elmarco/src/qemu/linux-user/syscall.c:4774:9: error: ‘target_rt_dev_ptr’ may be used uninitialized in this function [-Werror=maybe-uninitialized]
         unlock_user((void *)*host_rt_dev_ptr,
         ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                     *target_rt_dev_ptr, 0);
                     ~~~~~~~~~~~~~~~~~~~~~~

Based on previous discussion from patch "linux-users/syscall: make
do_ioctl_rt safer" by Alex Bennée.

Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190305151500.25038-1-marcandre.lureau@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-07 10:57:29 +01:00
Andreas Schwab
ba584f1de3 linux-user: don't short-circuit read with zero length
A zero-length read still needs to do the usual checks, thus it may return
errors like EBADF.  This makes the read syscall emulation consistent with
the pread64 syscall emulation.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvm5zsxz2we.fsf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-07 10:57:29 +01:00
Sandra Loosemore
14c8a3a157 Fix breakpoint support in Nios II user-mode emulation.
Nios II user-mode emulation was missing handling for EXCP_DEBUG,
making the gdb stub essentially useless.  This patch adds the missing
piece.  The new code was copied from the existing EXCP_TRAP handling
and is also similar to what other targets (e.g., arm) do with EXCP_DEBUG.

Signed-off-by: Sandra Loosemore <sandra@codesourcery.com>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <1550076626-7202-1-git-send-email-sandra@codesourcery.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-07 10:57:29 +01:00
Andreas Schwab
cd8133679f linux-user: fix emulation of accept4/getpeername/getsockname/recvfrom syscalls
System calls that return a socket address do so by writing the (possibly
truncated) address into the provided buffer space, but setting the
addrlen parameter to the actual size of the address.  To determine how
much to copy back to the target memory the emulation needs to remember
the incoming value of the addrlen parameter, so that it doesn't write
past the buffer limits.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <mvmimxmppcj.fsf_-_@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-07 10:57:29 +01:00
Richard Henderson
e20e3ec928 linux-user: Fix ELF_PLATFORM for aarch64_be-linux-user
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190212074840.13542-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-07 10:57:29 +01:00
Richard Henderson
13ec4ec3e1 linux-user: Add ELF_PLATFORM for arm
The 32-bit kernel has strings for v4, v5, v6, v7, v7m.
The 64-bit kernel, in compat mode, has strings for v8.

Fixes: https://bugs.launchpad.net/bugs/1813034
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190212074840.13542-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-07 10:57:29 +01:00
Andreas Schwab
24894f39c6 linux-user: fix recvmsg emulation
Set msg_flags in the returned struct msghdr.

Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <mvmimxprmn8.fsf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-03-07 10:57:28 +01:00
Richard Henderson
b89d9c988a target/arm: Implement ARMv8.4-CondM
Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190301200501.16533-8-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
[PMM: fixed up block comment style]
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-03-05 15:55:08 +00:00
Richard Henderson
9888bd1e20 target/arm: Implement ARMv8.0-SB
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190301200501.16533-3-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-03-05 15:55:07 +00:00
Richard Henderson
1c9af3a9e0 linux-user: Enable HWCAP_ASIMDFHM, HWCAP_JSCVT
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190219222952.22183-6-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-02-28 11:03:05 +00:00
Thomas Huth
44699e1c94 s390x: Fix the confusing contributions-after-2012 license statements
The license information in these files is rather confusing. The text
declares LGPL first, but then says that contributions after 2012 are
licensed under the GPL instead. How should the average user who just
downloaded the release tarball know which part is now GPL and which
is LGPL?

Looking at the text of the LGPL (see COPYING.LIB in the top directory),
the license clearly states how this should be done instead:

"3. You may opt to apply the terms of the ordinary GNU General Public
 License instead of this License to a given copy of the Library. To do
 this, you must alter all the notices that refer to this License, so
 that they refer to the ordinary GNU General Public License, version 2,
 instead of to this License."

Thus let's clean up the confusing statements and use the proper GPL
text only.

Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1549456893-16589-1-git-send-email-thuth@redhat.com>
Acked-by: Laurent Vivier <laurent@vivier.eu>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
2019-02-18 11:25:43 +01:00
Alex Bennée
37020ff153 linux-user/elfload: enable HWCAP_CPUID for AArch64
Userspace programs should (in theory) query the ELF HWCAP before
probing these registers. Now we have implemented them all make it
public.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190205190224.2198-6-alex.bennee@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-02-15 09:56:39 +00:00
Leon Alrae
33a07fa2db target/mips: reimplement SC instruction emulation and use cmpxchg
Completely rewrite conditional stores handling. Use cmpxchg.

This eliminates need for separate implementations of SC instruction
emulation for user and system emulation.

Signed-off-by: Leon Alrae <leon.alrae@imgtec.com>
Signed-off-by: Miodrag Dinic <miodrag.dinic@imgtec.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Acked-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2019-02-14 17:47:28 +01:00
Michael Clark
fb73883964
RISC-V: Use riscv prefix consistently on cpu helpers
* Add riscv prefix to raise_exception function
* Add riscv prefix to CSR read/write functions
* Add riscv prefix to signal handler function
* Add riscv prefix to get fflags function
* Remove redundant declaration of riscv_cpu_init
  and rename cpu_riscv_init to riscv_cpu_init
* rename riscv_set_mode to riscv_cpu_set_mode

Signed-off-by: Michael Clark <mjc@sifive.com>
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-02-11 15:56:21 -08:00
Laurent Vivier
0f5faca782 linux-user: add new netlink types
Add QEMU_IFLA_MIN_MTU, QEMU_IFLA_MAX_MTU (from linux v4.19)
    QEMU_IFLA_BRPORT_ISOLATED (from linux v4.18) and
    QEMU_IFLA_BRPORT_BACKUP_PORT (from linux v4.19).

These new types fix this error flow with sudo:
...
Unknown host QEMU_IFLA type: 50
Unknown host QEMU_IFLA type: 51
Unknown QEMU_IFLA_BRPORT type 33
...

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190206193211.6683-1-laurent@vivier.eu>
2019-02-07 14:11:19 +01:00
Peter Maydell
9d0bd0cdd0 linux-user: Check sscanf return value in open_net_route()
Coverity warns (CID 1390634) that open_net_route() is not
checking the return value from sscanf(), which means that
it might then use values that aren't initialized.

Errors here should in general not happen since we're passing
an assumed-good /proc/net/route from the host kernel, but
if we do fail to parse a line then just skip it in the output
we pass to the guest.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190205174207.9278-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-02-07 14:11:19 +01:00
Kan Li
22e4a267a6 Fix linux-user crashes in ioctl(SIOCGIFCONF) when ifc_buf is NULL.
Summary:
This is to fix bug https://bugs.launchpad.net/qemu/+bug/1796754.
It is valid for ifc_buf to be NULL according to
http://man7.org/linux/man-pages/man7/netdevice.7.html.

Signed-off-by: Kan Li <likan_999.student@sina.com>
Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Message-Id: <20181024201303.114-1-likan_999.student@sina.com>
[lv: fix errors reported by checkpatch.pl]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-02-07 14:04:03 +01:00
Richard Henderson
bff63fbf97 linux-user: Implement PR_PAC_RESET_KEYS
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20190201195404.30486-2-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-02-05 16:52:39 +00:00
Richard Henderson
87877543b1 linux-user: Initialize aarch64 pac keys
Initialize the keys to a non-zero value on process start.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-02-01 15:05:22 +00:00
Richard Henderson
29d26ab2b0 aarch64-linux-user: Enable HWCAP bits for PAuth
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-02-01 15:05:10 +00:00
Richard Henderson
0083a1fad6 aarch64-linux-user: Update HWCAP bits from linux 5.0-rc1
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-02-01 15:05:04 +00:00
Thomas Huth
d749fb85bd target/m68k: Fix LGPL information in the file headers
It's either "GNU *Library* General Public License version 2" or
"GNU Lesser General Public License version *2.1*", but there was
no "version 2.0" of the "Lesser" license. So assume that version
2.1 is meant here.
Also some files mention the GPL instead of the LGPL after declaring
that the files are licensed under the LGPL, so change these spots to
use LGPL, too.

Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
Message-Id: <1548769438-28942-1-git-send-email-thuth@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-01-30 14:20:13 +01:00
Thomas Huth
798b858130 linux-user: Fix compilation with clang 3.4
Clang version 3.4.2 does not know the -Wpragmas option yet and bails
out with an error when we try to disable it in linux-user/qemu.h.
Fortunately, clang has a __has_warning() macro which allows us to add
an explicit check for the option that we want to ignore. With that we
can check for the availability of "-Waddress-of-packed-member" properly
and do not need the "-Wpragmas" at all here.

Fixes: 850d5e330a
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Thomas Huth <thuth@redhat.com>
2019-01-22 06:26:31 +01:00
Paolo Bonzini
7d37435bd5 avoid TABs in files that only contain a few
Most files that have TABs only contain a handful of them.  Change
them to spaces so that we don't confuse people.

disas, standard-headers, linux-headers and libdecnumber are imported
from other projects and probably should be exempted from the check.
Outside those, after this patch the following files still contain both
8-space and TAB sequences at the beginning of the line.  Many of them
have a majority of TABs, or were initially committed with all tabs.

    bsd-user/i386/target_syscall.h
    bsd-user/x86_64/target_syscall.h
    crypto/aes.c
    hw/audio/fmopl.c
    hw/audio/fmopl.h
    hw/block/tc58128.c
    hw/display/cirrus_vga.c
    hw/display/xenfb.c
    hw/dma/etraxfs_dma.c
    hw/intc/sh_intc.c
    hw/misc/mst_fpga.c
    hw/net/pcnet.c
    hw/sh4/sh7750.c
    hw/timer/m48t59.c
    hw/timer/sh_timer.c
    include/crypto/aes.h
    include/disas/bfd.h
    include/hw/sh4/sh.h
    libdecnumber/decNumber.c
    linux-headers/asm-generic/unistd.h
    linux-headers/linux/kvm.h
    linux-user/alpha/target_syscall.h
    linux-user/arm/nwfpe/double_cpdo.c
    linux-user/arm/nwfpe/fpa11_cpdt.c
    linux-user/arm/nwfpe/fpa11_cprt.c
    linux-user/arm/nwfpe/fpa11.h
    linux-user/flat.h
    linux-user/flatload.c
    linux-user/i386/target_syscall.h
    linux-user/ppc/target_syscall.h
    linux-user/sparc/target_syscall.h
    linux-user/syscall.c
    linux-user/syscall_defs.h
    linux-user/x86_64/target_syscall.h
    slirp/cksum.c
    slirp/if.c
    slirp/ip.h
    slirp/ip_icmp.c
    slirp/ip_icmp.h
    slirp/ip_input.c
    slirp/ip_output.c
    slirp/mbuf.c
    slirp/misc.c
    slirp/sbuf.c
    slirp/socket.c
    slirp/socket.h
    slirp/tcp_input.c
    slirp/tcpip.h
    slirp/tcp_output.c
    slirp/tcp_subr.c
    slirp/tcp_timer.c
    slirp/tftp.c
    slirp/udp.c
    slirp/udp.h
    target/cris/cpu.h
    target/cris/mmu.c
    target/cris/op_helper.c
    target/sh4/helper.c
    target/sh4/op_helper.c
    target/sh4/translate.c
    tcg/sparc/tcg-target.inc.c
    tests/tcg/cris/check_addo.c
    tests/tcg/cris/check_moveq.c
    tests/tcg/cris/check_swap.c
    tests/tcg/multiarch/test-mmap.c
    ui/vnc-enc-hextile-template.h
    ui/vnc-enc-zywrle.h
    util/envlist.c
    util/readline.c

The following have only TABs:

    bsd-user/i386/target_signal.h
    bsd-user/sparc64/target_signal.h
    bsd-user/sparc64/target_syscall.h
    bsd-user/sparc/target_signal.h
    bsd-user/sparc/target_syscall.h
    bsd-user/x86_64/target_signal.h
    crypto/desrfb.c
    hw/audio/intel-hda-defs.h
    hw/core/uboot_image.h
    hw/sh4/sh7750_regnames.c
    hw/sh4/sh7750_regs.h
    include/hw/cris/etraxfs_dma.h
    linux-user/alpha/termbits.h
    linux-user/arm/nwfpe/fpopcode.h
    linux-user/arm/nwfpe/fpsr.h
    linux-user/arm/syscall_nr.h
    linux-user/arm/target_signal.h
    linux-user/cris/target_signal.h
    linux-user/i386/target_signal.h
    linux-user/linux_loop.h
    linux-user/m68k/target_signal.h
    linux-user/microblaze/target_signal.h
    linux-user/mips64/target_signal.h
    linux-user/mips/target_signal.h
    linux-user/mips/target_syscall.h
    linux-user/mips/termbits.h
    linux-user/ppc/target_signal.h
    linux-user/sh4/target_signal.h
    linux-user/sh4/termbits.h
    linux-user/sparc64/target_syscall.h
    linux-user/sparc/target_signal.h
    linux-user/x86_64/target_signal.h
    linux-user/x86_64/termbits.h
    pc-bios/optionrom/optionrom.h
    slirp/mbuf.h
    slirp/misc.h
    slirp/sbuf.h
    slirp/tcp.h
    slirp/tcp_timer.h
    slirp/tcp_var.h
    target/i386/svm.h
    target/sparc/asi.h
    target/xtensa/core-dc232b/xtensa-modules.inc.c
    target/xtensa/core-dc233c/xtensa-modules.inc.c
    target/xtensa/core-de212/core-isa.h
    target/xtensa/core-de212/xtensa-modules.inc.c
    target/xtensa/core-fsf/xtensa-modules.inc.c
    target/xtensa/core-sample_controller/core-isa.h
    target/xtensa/core-sample_controller/xtensa-modules.inc.c
    target/xtensa/core-test_kc705_be/core-isa.h
    target/xtensa/core-test_kc705_be/xtensa-modules.inc.c
    tests/tcg/cris/check_abs.c
    tests/tcg/cris/check_addc.c
    tests/tcg/cris/check_addcm.c
    tests/tcg/cris/check_addoq.c
    tests/tcg/cris/check_bound.c
    tests/tcg/cris/check_ftag.c
    tests/tcg/cris/check_int64.c
    tests/tcg/cris/check_lz.c
    tests/tcg/cris/check_openpf5.c
    tests/tcg/cris/check_sigalrm.c
    tests/tcg/cris/crisutils.h
    tests/tcg/cris/sys.c
    tests/tcg/i386/test-i386-ssse3.c
    ui/vgafont.h

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20181213223737.11793-3-pbonzini@redhat.com>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Eric Blake <eblake@redhat.com>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:56 +01:00
Paolo Bonzini
72e21db7ea remove space-tab sequences
There are not many, and they are all simple mistakes that ended up
being committed.  Remove them.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Message-Id: <20181213223737.11793-2-pbonzini@redhat.com>
Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com>
Acked-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:55 +01:00
Paolo Bonzini
b58deb344d qemu/queue.h: leave head structs anonymous unless necessary
Most list head structs need not be given a name.  In most cases the
name is given just in case one is going to use QTAILQ_LAST, QTAILQ_PREV
or reverse iteration, but this does not apply to lists of other kinds,
and even for QTAILQ in practice this is only rarely needed.  In addition,
we will soon reimplement those macros completely so that they do not
need a name for the head struct.  So clean up everything, not giving a
name except in the rare case where it is necessary.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-01-11 15:46:55 +01:00
Peter Maydell
a311f891ab Minor linux-user update (2019-01-10)
Fixes LTP tests pwrite03 and pwrite03_64
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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-4.0-pull-request' into staging

Minor linux-user update (2019-01-10)
Fixes LTP tests pwrite03 and pwrite03_64

# gpg: Signature made Thu 10 Jan 2019 08:37:04 GMT
# gpg:                using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>"
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-4.0-pull-request:
  linux-user: make pwrite64/pread64(fd, NULL, 0, offset) return 0
  Add getsockopt for settable SOL_IPV6 options

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-01-10 17:49:54 +00:00
Peter Maydell
2bd3f8998e linux-user: make pwrite64/pread64(fd, NULL, 0, offset) return 0
Linux returns success if pwrite64() or pread64() are called with a
zero length NULL buffer, but QEMU was returning -TARGET_EFAULT.

This is the same bug that we fixed in commit 58cfa6c2e6
for the write syscall, and long before that in 38d840e679
for the read syscall.

Fixes: https://bugs.launchpad.net/qemu/+bug/1810433

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190108184900.9654-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-01-10 09:36:41 +01:00
Tom Deseyn
bd8ed48549 Add getsockopt for settable SOL_IPV6 options
Signed-off-by: Tom Deseyn <tom.deseyn@gmail.com>
Message-Id: <20181213130611.7496-1-tom.deseyn@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-01-10 09:36:31 +01:00
Mark Cave-Ayland
ef96e3ae96 target/ppc: move FP and VMX registers into aligned vsr register array
The VSX register array is a block of 64 128-bit registers where the first 32
registers consist of the existing 64-bit FP registers extended to 128-bit
using new VSR registers, and the last 32 registers are the VMX 128-bit
registers as show below:

            64-bit               64-bit
    +--------------------+--------------------+
    |        FP0         |                    |  VSR0
    +--------------------+--------------------+
    |        FP1         |                    |  VSR1
    +--------------------+--------------------+
    |        ...         |        ...         |  ...
    +--------------------+--------------------+
    |        FP30        |                    |  VSR30
    +--------------------+--------------------+
    |        FP31        |                    |  VSR31
    +--------------------+--------------------+
    |                  VMX0                   |  VSR32
    +-----------------------------------------+
    |                  VMX1                   |  VSR33
    +-----------------------------------------+
    |                  ...                    |  ...
    +-----------------------------------------+
    |                  VMX30                  |  VSR62
    +-----------------------------------------+
    |                  VMX31                  |  VSR63
    +-----------------------------------------+

In order to allow for future conversion of VSX instructions to use TCG vector
operations, recreate the same layout using an aligned version of the existing
vsr register array.

Since the old fpr and avr register arrays are removed, the existing callers
must also be updated to use the correct offset in the vsr register array. This
also includes switching the relevant VMState fields over to using subarrays
to make sure that migration is preserved.

Signed-off-by: Mark Cave-Ayland <mark.cave-ayland@ilande.co.uk>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2019-01-09 09:28:14 +11:00
Richard Henderson
b8c92c6d29 linux-user: Add safe_syscall for riscv64 host
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26 06:40:02 +11:00
Alistair Francis
511f3138e4 linux-user: Add host dependency for RISC-V 64-bit
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <9d777f619840a8dd8e4f3834dcfc3bd28e052ccd.1545246859.git.alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26 06:40:02 +11:00
Alistair Francis
f936eac808 linux-user: Add host dependency for RISC-V 32-bit
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Michael Clark <mjc@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <76f8f9383a766dbcade883e897dec8cfef669799.1545246859.git.alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-12-26 06:40:02 +11:00
Stefan Markovic
6456c51081 linux-user: Update MIPS specific prctl() implementation
Perform needed checks before actual prctl() PR_SET_FP_MODE and
PR_GET_FP_MODE work based on kernel implementation. Also, update
necessary hflags.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
2018-11-17 19:29:34 +01:00
Peter Maydell
bba390cb9e linux-user/sparc/signal.c: Remove dead code
Coverity complains (CID 1390847) about some dead code in
do_sigreturn(). This is an if (err) clause that can never be
true, copied from the kernel (where __get_user returns an error).
The one code path that could report an error is in the
currently commented-out pseudocode for handling FPU register
restoring, so move the if into that comment (and fix the
broken indent in the comment in the process).

(The new position for the error check is also the semantically
correct one -- we should not restore the signal mask from
the signal frame if we get an error here, so the check must
be done before set_sigmask(), not after.)

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-id: 20181115114616.26265-1-peter.maydell@linaro.org
2018-11-15 13:06:40 +00:00
Yunqiang Su
113a9dd73f linux-user: Add support for SO_REUSEPORT
Add support for SO_REUSEPORT, including strace support. SO_REUSEPORT
was introduced relatively recently, since Linux 3.9, so use
'#if defined SO_REUSEPORT'.

Signed-off-by: Yunqiang Su <ysu@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1540904108-30873-4-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-11-12 16:38:26 +01:00
Peter Maydell
9f214bd390 linux-user: Clean up nios2 main loop signal handling
The nios2 main loop code's code does some odd
things with gdb_handlesig() that no other target
CPU does: it has some signals that are delivered
to gdb and only to gdb. Stop doing this, and instead
behave like all the other targets:
 * a trap instruction becomes a SIGTRAP
 * an unhandled exception type returned from cpu_exec()
   causes us to abort(), not to try to hand gdb a SIGILL

This fixes in passing Coverity issue CID 1390853,
which was a complaint that the old code failed to
check the return value from gdb_handlesig().

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20181019174958.26616-3-peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[lv: removed gdbsig unused variable]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-11-12 16:02:10 +01:00
Peter Maydell
b10089a14c linux-user: Don't call gdb_handlesig() before queue_signal()
The CPU main-loop routines for linux-user generally
call gdb_handlesig() when they're about to queue a
SIGTRAP signal. This is wrong, because queue_signal()
will cause us to pend a signal, and process_pending_signals()
will then call gdb_handlesig() itself. So the effect is that
we notify gdb of the SIGTRAP, and then if gdb says "OK,
continue with signal X" we will incorrectly notify
gdb of the signal X as well. We don't do this double-notify
for anything else, only SIGTRAP.

Remove this unnecessary and incorrect code from all
the targets except for nios2 (whose main loop is
doing something different and broken, and will be handled
in a separate patch).

This bug only manifests if the user responds to the reported
SIGTRAP using "signal SIGFOO" rather than "continue"; since
the latter is the overwhelmingly common thing to do after a
breakpoint most people won't have hit this.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20181019174958.26616-2-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-11-12 15:48:00 +01:00
Peter Maydell
e285977e77 linux-user: Remove dead error-checking code
Remove some dead code spotted by Coverity (CID 1009855,
1390854, 1390847). The underlying cause in all these cases
is the same: QEMU's put_user operations can't result in
errors, but the kernel's equivalent does. So when code
was copied from the kernel signal-frame-setup/teardown
code, checks on error flags that were needed in the kernel
became dead code for us.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20181019161715.12122-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-11-12 15:43:07 +01:00
Laurent Vivier
b9f8e55bf7 target/m68k: use EXCP_ILLEGAL instead of EXCP_UNSUPPORTED
Coldfire defines an "Unsupported instruction" exception if execution
of a valid instruction is attempted but the required hardware is not
present in the processor.

We use it with instructions that are in fact undefined or illegal,
and the exception expected in this case by the kernel is the
illegal exception, so this patch fixes that.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20181030165554.5761-1-laurent@vivier.eu>
2018-11-01 12:12:24 +01:00
Peter Maydell
7d51a855cd target/xtensa: support for bFLT binaries
- add support for bFLT binaries for target/xtensa
 - fix per-architecture target_flat.h customization
 - fix initial stack pointer for bFLT
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Merge remote-tracking branch 'remotes/xtensa/tags/20181030-xtensa' into staging

target/xtensa: support for bFLT binaries

- add support for bFLT binaries for target/xtensa
- fix per-architecture target_flat.h customization
- fix initial stack pointer for bFLT

# gpg: Signature made Tue 30 Oct 2018 18:27:42 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/20181030-xtensa:
  linux-user/flatload: fix initial stack pointer alignment
  linux-user: xtensa: enable bFLT support

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-31 16:11:43 +00:00
Max Filippov
5c76d652ab linux-user/flatload: fix initial stack pointer alignment
Stack pointer alignment code incorrectly adds stack_size to sp instead
of subtracting it. It also does not take flat_argvp_envp_on_stack() into
account when calculating stack_size. This results in initial stack
pointer misalignment with certain set of command line arguments and
environment variables and correct alignment for the same binary with a
different set of arguments. This misalignment causes failures in the
following tests in the testsuite of gcc built for xtensa uclinux:

  gcc.dg/torture/vshuf-v64qi.c
  gcc.dg/torture/vshuf-v8sf.c
  gcc.dg/torture/vshuf-v8si.c

Reviewed-by: Laurent Vivier <lvivier@redhat.com>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-10-30 11:23:32 -07:00
Peter Maydell
a2e002ff79 QEMU trivial patches collected between June and October 2018
(Thank you to Thomas Huth)
 
 v2: fix 32bit build with updated patch (v3) from Philippe Mathieu-Daudé
     built in a 32bit debian sid chroot
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Merge remote-tracking branch 'remotes/vivier2/tags/qemu-trivial-for-3.1-pull-request' into staging

QEMU trivial patches collected between June and October 2018
(Thank you to Thomas Huth)

v2: fix 32bit build with updated patch (v3) from Philippe Mathieu-Daudé
    built in a 32bit debian sid chroot

# gpg: Signature made Tue 30 Oct 2018 11:23:01 GMT
# gpg:                using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>"
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/qemu-trivial-for-3.1-pull-request:
  milkymist-minimac2: Use qemu_log_mask(GUEST_ERROR) instead of error_report
  ppc: move at24c to its own CONFIG_ symbol
  hw/intc/gicv3: Remove useless parenthesis around DIV_ROUND_UP macro
  hw/pci-host: Remove useless parenthesis around DIV_ROUND_UP macro
  tests/bios-tables-test: Remove an useless cast
  xen: Use the PCI_DEVICE macro
  qobject: Catch another straggler for use of qdict_put_str()
  configure: Support pkg-config for zlib
  tests: Fix typos in comments and help message (found by codespell)
  cpu.h: fix a typo in comment
  linux-user: fix comment s/atomic_write/atomic_set/
  qemu-iotests: make 218 executable
  scripts/qemu.py: remove trailing quotes on docstring
  scripts/decodetree.py: remove unused imports
  docs/devel/testing.rst: add missing newlines after code block
  qemu-iotests: fix filename containing checks
  tests/tcg/README: fix location for lm32 tests
  memory.h: fix typos in comments
  vga_int: remove unused function protype
  configs/alpha: Remove unused CONFIG_PARALLEL_ISA switch

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-30 15:49:55 +00:00
Stefan Markovic
64ea3d676d linux-user: Add prctl() PR_SET_FP_MODE and PR_GET_FP_MODE implementations
Implement MIPS specific prctl() PR_SET_FP_MODE and PR_GET_FP_MODE emulation.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-10-29 15:50:31 +01:00
Stefan Markovic
0c1bbedc10 linux-user: Determine the desired FPU mode from MIPS.abiflags
Floating-point mode is calculated from MIPS.abiflags FP ABI value
(based on kernel implementation). Illegal combinations are rejected.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-10-29 15:50:31 +01:00
Stefan Markovic
c94cb6c946 linux-user: Read and set FP ABI value from MIPS abiflags
Set fp_abi and interp_fp_abi values to current fp_abi value read from
MIPS.abiflags.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-10-29 15:50:31 +01:00
Stefan Markovic
5dd0db52e6 linux-user: Extract MIPS abiflags from ELF file
Read MIPS.abiflags section from ELF file into Mips_elf_abiflags_v0 struct.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-10-29 15:50:31 +01:00
Stefan Markovic
74cfc704e5 linux-user: Extend image_info struct with MIPS fp_abi and interp_fp_abi fields
Add MIPS specific image_info struct fields fp_abi and interp_fp_abi
to store executable and interpreter fp_abi values (based on kernel
struct arch_elf_state in mips/include/asm/elf.h).

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-10-29 15:50:23 +01:00
Emilio G. Cota
83f164bd5a linux-user: fix comment s/atomic_write/atomic_set/
Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180811211011.6277-1-cota@braap.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-10-26 17:17:32 +02:00
Peter Maydell
c96292036a MIPS queue for October 2018 - part 2 - v2
-----BEGIN PGP SIGNATURE-----
 Version: GnuPG v1
 
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Merge remote-tracking branch 'remotes/amarkovic/tags/mips-queue-oct-2018-part-2-v2' into staging

MIPS queue for October 2018 - part 2 - v2

# gpg: Signature made Wed 24 Oct 2018 14:22:54 BST
# gpg:                using RSA key D4972A8967F75A65
# gpg: Good signature from "Aleksandar Markovic <amarkovic@wavecomp.com>"
# 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: 8526 FBF1 5DA3 811F 4A01  DD75 D497 2A89 67F7 5A65

* remotes/amarkovic/tags/mips-queue-oct-2018-part-2-v2: (33 commits)
  target/mips: Fix decoding of ALIGN and DALIGN instructions
  target/mips: Fix the title of translate.c
  linux-user/mips: Recognize the R5900 CPU model
  target/mips: Define the R5900 CPU
  tests/tcg/mips: Add tests for R5900 DIVU1
  tests/tcg/mips: Add tests for R5900 DIV1
  tests/tcg/mips: Add tests for R5900 MTLO1 and MTHI1
  tests/tcg/mips: Add tests for R5900 MFLO1 and MFHI1
  tests/tcg/mips: Add tests for R5900 three-operand MULTU1
  tests/tcg/mips: Add tests for R5900 three-operand MULT1
  tests/tcg/mips: Add tests for R5900 three-operand MULTU
  tests/tcg/mips: Add tests for R5900 three-operand MULT
  target/mips: Make R5900 DMULT[U], DDIV[U], LL[D] and SC[D] user only
  target/mips: Support R5900 MOVN, MOVZ and PREF instructions from MIPS IV
  target/mips: Support R5900 DIV1 and DIVU1 instructions
  target/mips: Support R5900 MFLO1, MTLO1, MFHI1 and MTHI1 instructions
  target/mips: Support R5900 three-operand MULT1 and MULTU1 instructions
  target/mips: Support R5900 three-operand MULT and MULTU instructions
  target/mips: Add a placeholder for R5900 MMI3 instruction subclass
  target/mips: Add a placeholder for R5900 MMI2 instruction subclass
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-24 16:31:40 +01:00
Fredrik Noring
4d9e5a0eb7 linux-user/mips: Recognize the R5900 CPU model
This kind of ELF for the R5900 relies on an IEEE 754-1985 compliant FPU.
The R5900 FPU hardware is noncompliant and it is therefore emulated in
software by the Linux kernel. QEMU emulates a compliant FPU accordingly.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Fredrik Noring <noring@nocrew.org>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
2018-10-24 15:20:31 +02:00
Richard Henderson
5763190fa8 target/arm: Convert v8.2-fp16 from feature bit to aa64pfr0 test
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181016223115.24100-9-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-24 07:51:31 +01:00
Richard Henderson
cd208a1c39 target/arm: Convert sve from feature bit to aa64pfr0 test
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181016223115.24100-8-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-24 07:51:29 +01:00
Richard Henderson
7e0cf8b47f target/arm: Convert division from feature bits to isar0 tests
Both arm and thumb2 division are controlled by the same ISAR field,
which takes care of the arm implies thumb case.  Having M imply
thumb2 division was wrong for cortex-m0, which is v6m and does not
have thumb2 at all, much less thumb2 division.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181016223115.24100-5-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-24 07:50:16 +01:00
Richard Henderson
962fcbf2ef target/arm: Convert v8 extensions from feature bits to isar tests
Most of the v8 extensions are self-contained within the ISAR
registers and are not implied by other feature bits, which
makes them the easiest to convert.

Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20181016223115.24100-4-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-24 07:50:16 +01:00
Max Filippov
02e33e9ffd linux-user: xtensa: enable bFLT support
- request bflt support in configure;
- implement custom linux-user/xtensa/target_flat.h that doesn't put envp
  on stack;
- fix #include "target_flat.h" in flatload.c so that it first search for
  arch-customized version of the header.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-10-19 18:40:20 -07:00
Cortland Tölva
a133367ec1 linux-user: Implement special usbfs ioctls.
Userspace submits a USB Request Buffer to the kernel, optionally
discards it, and finally reaps the URB.  Thunk buffers from target
to host and back.

Tested by running an i386 scanner driver on ARMv7 and by running
the PowerPC lsusb utility on x86_64.  The discardurb ioctl is
not exercised in these tests.

Signed-off-by: Cortland Tölva <cst@tolva.net>
Message-Id: <20181008163521.17341-4-cst@tolva.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-10-19 14:05:10 +02:00
Cortland Tölva
6c753a63ed linux-user: Define ordinary usbfs ioctls.
Provide ioctl definitions for the generic thunk mechanism to
convert most usbfs calls.  Calculate arg size at runtime.

Signed-off-by: Cortland Tölva <cst@tolva.net>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20181008163521.17341-3-cst@tolva.net>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-10-19 14:04:17 +02:00
Peter Maydell
1b7490446b Add a workaround for clang bug and remove misleading comment (sparc)
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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-3.1-pull-request' into staging

Add a workaround for clang bug and remove misleading comment (sparc)

# gpg: Signature made Thu 18 Oct 2018 20:00:17 BST
# gpg:                using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>"
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-3.1-pull-request:
  linux-user/sparc/signal.c: Remove unnecessary comment
  linux-user: Suppress address-of-packed-member warnings in __get/put_user_e

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-10-19 11:20:05 +01:00
Stefan Markovic
5b702ffd42 linux-user: Add infrastructure for handling MIPS-specific prctl()
Add infrastructure for handling MIPS-specific prctl(). This is,
for now, just an empty placeholder. The real handling will be
implemented in subsequent patches.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
2018-10-18 20:37:20 +02:00
Stefan Markovic
a2b9a10e94 linux-user: Add MIPS-specific prctl() options
Add MIPS-specific prctl() options TARGET_PR_SET_FP_MODE	and
TARGET_PR_SET_FP_MODE. These values are essentially copied from
linux kernel header include/uapi/linux/prctl.h.

This is done in a way consistent with a similar case of
aarch64-specific prctl() options TARGET_PR_SVE_SET_VL and
TARGET_PR_SVE_GET_VL.

Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
2018-10-18 20:37:20 +02:00
Peter Maydell
6d5bb0b896 linux-user/sparc/signal.c: Remove unnecessary comment
Remove a comment suggesting that we need to call tb_flush()
after writing the SPARC signal frame trampoline insns.
This isn't necessary in QEMU, because (even if the guest
architecture requires explicit icache maintenance) we
ensure that memory writes result in invalidation of
translated code from that memory.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20181009184017.15675-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-10-18 20:17:49 +02:00
Peter Maydell
850d5e330a linux-user: Suppress address-of-packed-member warnings in __get/put_user_e
Our __get_user_e() and __put_user_e() macros cause newer versions
of clang to generate false-positive -Waddress-of-packed-member
warnings if they are passed the address of a member of a packed
struct (see https://bugs.llvm.org/show_bug.cgi?id=39113).
Suppress these using the _Pragma() operator. Unfortunately
_Pragma() support in gcc is broken in some gcc versions and
in some usage contexts, so we limit the pragma usage here to clang.

To put in the pragmas we need to convert the macros from
expressions to statements, but all the callsites effectively
treat them as statements already so this is OK.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20181009161814.21257-1-peter.maydell@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-10-18 20:17:49 +02:00
Peter Maydell
aa8e26de96 - some fixes for setrlimit() and write()
- fixes ELF loader when host page size is greater than target page size
 - add SO_LINGER to getsockopt()/setsockopt()
 - move TargetFdTrans from syscall.c
   v2: add "#include <linux/netlink.h>" in linux-user/fd-trans.c
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Merge remote-tracking branch 'remotes/vivier2/tags/linux-user-for-3.1-pull-request' into staging

- some fixes for setrlimit() and write()
- fixes ELF loader when host page size is greater than target page size
- add SO_LINGER to getsockopt()/setsockopt()
- move TargetFdTrans from syscall.c
  v2: add "#include <linux/netlink.h>" in linux-user/fd-trans.c

# gpg: Signature made Tue 25 Sep 2018 21:51:13 BST
# gpg:                using RSA key F30C38BD3F2FBE3C
# gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>"
# gpg:                 aka "Laurent Vivier <laurent@vivier.eu>"
# gpg:                 aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>"
# Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F  5173 F30C 38BD 3F2F BE3C

* remotes/vivier2/tags/linux-user-for-3.1-pull-request:
  linux-user: do setrlimit selectively
  linux-user: write(fd, NULL, 0) parity with linux's treatment of same
  linux-user: elf: mmap all the target-pages of hostpage for data segment
  linux-user: add SO_LINGER to {g,s}etsockopt
  linux-user: move TargetFdTrans functions to their own file

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-09-28 11:22:36 +01:00
Max Filippov
5dfa88f716 linux-user: do setrlimit selectively
setrlimit guest calls that affect memory resources
(RLIMIT_{AS,DATA,STACK}) may interfere with QEMU internal memory
management. They may result in QEMU lockup because mprotect call in
page_unprotect would fail with ENOMEM error code, causing infinite loop
of SIGSEGV. E.g. it happens when running libstdc++ testsuite for xtensa
target on x86_64 host.

Don't call host setrlimit for memory-related resources.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Message-Id: <20180917181314.22551-1-jcmvbkbc@gmail.com>
[lv: rebase on master]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-09-25 22:36:49 +02:00
Tony Garnock-Jones
58cfa6c2e6 linux-user: write(fd, NULL, 0) parity with linux's treatment of same
Bring linux-user write(2) handling into line with linux for the case
of a 0-byte write with a NULL buffer. Based on a patch originally
written by Zhuowei Zhang.

Addresses https://bugs.launchpad.net/qemu/+bug/1716292.

>From Zhuowei Zhang's patch (https://lists.gnu.org/archive/html/qemu-devel/2017-09/msg08073.html):

    Linux returns success for the special case of calling write with a
    zero-length NULL buffer: compiling and running

    int main() {
       ssize_t ret = write(STDOUT_FILENO, NULL, 0);
       fprintf(stderr, "write returned %ld\n", ret);
       return 0;
    }

    gives "write returned 0" when run directly, but "write returned
    -1" in QEMU.

    This commit checks for this situation and returns success if
    found.

Subsequent discussion raised the following questions (and my answers):

 - Q. Should TARGET_NR_read pass through to safe_read in this
      situation too?
   A. I'm wary of changing unrelated code to the specific problem I'm
      addressing. TARGET_NR_read is already consistent with Linux for
      this case.

 - Q. Do pread64/pwrite64 need to be changed similarly?
   A. Experiment suggests not: both linux and linux-user yield -1 for
      NULL 0-length reads/writes.

Signed-off-by: Tony Garnock-Jones <tonygarnockjones@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180908182205.GB409@mornington.dcs.gla.ac.uk>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-09-25 22:36:49 +02:00
Shivaprasad G Bhat
94894ff2d1 linux-user: elf: mmap all the target-pages of hostpage for data segment
If the hostpage size is greater than the TARGET_PAGESIZE, the
target-pages of size TARGET_PAGESIZE are marked valid only till the
length requested during the elfload. The glibc attempts to consume unused
space in the last page of data segment(__libc_memalign() in
elf/dl-minimal.c). If PT_LOAD p_align is greater than or
equal to hostpage size, the GLRO(dl_pagesize) is actually the host pagesize
as set in the auxillary vectors. So, there is no explicit mmap request for
the remaining target-pages on the last hostpage. The glibc assumes that
particular space as available and subsequent attempts to use
those addresses lead to crash as the target_mmap has not marked them valid
for those target-pages.

The issue is seen when trying to chroot to 16.04-x86_64 ubuntu on a PPC64
host where the fork fails to access the thread_id as it is allocated on a
page not marked valid. The recent glibc doesn't have checks for thread-id in
fork, but the issue can manifest somewhere else, none the less.

The fix here is to map all the target-pages of the hostpage during the
elfload if the p_align is greater than or equal to hostpage size, for
data segment to allow the glibc for proper consumption.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <153553435604.51992.5640085189104207249.stgit@lep8c.aus.stglabs.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-09-25 22:36:49 +02:00
Carlo Marcelo Arenas Belón
83eb6e5090 linux-user: add SO_LINGER to {g,s}etsockopt
Original implementation for setsockopt by Chen Gang[1]; all bugs mine,
including removing assignment for optname which hopefully makes the
logic easier to follow and moving some variables to make the code
more selfcontained.

[1] http://patchwork.ozlabs.org/patch/565659/

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Co-Authored-By: Chen Gang <gang.chen.5i5j@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180824085601.6259-1-carenas@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-09-25 22:36:49 +02:00
Laurent Vivier
f7e6a401fe linux-user: move TargetFdTrans functions to their own file
This will ease to move out syscall functions from syscall.c

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180823222215.13781-1-laurent@vivier.eu>
2018-09-25 22:36:47 +02:00
Sandipan Das
be0c46d464 target-ppc: Extend HWCAP2 bits for ISA 3.0
This adds the HWCAP2 bit to detect if a linux user process is
running on an ISA 3.0 compliant cpu like POWER9. This can be
verified using a simple test program that prints the value in
the auxiliary vector for AT_HWCAP2 as shown below.

Before:
  $ qemu-ppc64le -cpu power8 test
  0x8c000000

  $ qemu-ppc64le -cpu power9 test
  0x8c000000

After:
  $ qemu-ppc64le -cpu power8 test
  0x8c000000

  $ qemu-ppc64le -cpu power9 test
  0x8c800000

Signed-off-by: Sandipan Das <sandipan@linux.ibm.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2018-09-07 11:29:50 +10:00
Aleksandar Markovic
722ac96cd6 elf: Don't check FCR31_NAN2008 bit for nanoMIPS
nanoMIPS is always NaN2008 compliant, and rules for checking
FCR31's NAN2008 bit are obsoleted.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-08-24 17:51:59 +02:00
Aleksandar Markovic
f72541f3a5 elf: Relax MIPS' elf_check_arch() to accept EM_NANOMIPS too
Starting from nanoMIPS introduction, machine variant can be
EM_MIPS or EM_NANOMIPS.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-08-24 17:51:59 +02:00
Aleksandar Rikalo
0b16dcd180 target/mips: Implement emulation of nanoMIPS LLWP/SCWP pair
Implement support for nanoMIPS LLWP/SCWP instructions. Beside
adding core functionality of these instructions, this patch adds
support for availability control via configuration bit XNP.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Dimitrije Nikolic <dnikolic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-08-24 17:51:59 +02:00
Peter Maydell
3c825bb7c1 * x86 TCG fixes for 64-bit call gates (Andrew)
* qumu-guest-agent freeze-hook tweak (Christian)
 * pm_smbus improvements (Corey)
 * Move validation to pre_plug for pc-dimm (David)
 * Fix memory leaks (Eduardo, Marc-André)
 * synchronization profiler (Emilio)
 * Convert the CPU list to RCU (Emilio)
 * LSI support for PPR Extended Message (George)
 * vhost-scsi support for protection information (Greg)
 * Mark mptsas as a storage device in the help (Guenter)
 * checkpatch tweak cherry-picked from Linux (me)
 * Typos, cleanups and dead-code removal (Julia, Marc-André)
 * qemu-pr-helper support for old libmultipath (Murilo)
 * Annotate fallthroughs (me)
 * MemoryRegionOps cleanup (me, Peter)
 * Make s390 qtests independent from libqos, which doesn't actually support it (me)
 * Make cpu_get_ticks independent from BQL (me)
 * Introspection fixes (Thomas)
 * Support QEMU_MODULE_DIR environment variable (ryang)
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Merge remote-tracking branch 'remotes/bonzini/tags/for-upstream' into staging

* x86 TCG fixes for 64-bit call gates (Andrew)
* qumu-guest-agent freeze-hook tweak (Christian)
* pm_smbus improvements (Corey)
* Move validation to pre_plug for pc-dimm (David)
* Fix memory leaks (Eduardo, Marc-André)
* synchronization profiler (Emilio)
* Convert the CPU list to RCU (Emilio)
* LSI support for PPR Extended Message (George)
* vhost-scsi support for protection information (Greg)
* Mark mptsas as a storage device in the help (Guenter)
* checkpatch tweak cherry-picked from Linux (me)
* Typos, cleanups and dead-code removal (Julia, Marc-André)
* qemu-pr-helper support for old libmultipath (Murilo)
* Annotate fallthroughs (me)
* MemoryRegionOps cleanup (me, Peter)
* Make s390 qtests independent from libqos, which doesn't actually support it (me)
* Make cpu_get_ticks independent from BQL (me)
* Introspection fixes (Thomas)
* Support QEMU_MODULE_DIR environment variable (ryang)

# gpg: Signature made Thu 23 Aug 2018 17:46:30 BST
# gpg:                using RSA key BFFBD25F78C7AE83
# gpg: Good signature from "Paolo Bonzini <bonzini@gnu.org>"
# gpg:                 aka "Paolo Bonzini <pbonzini@redhat.com>"
# Primary key fingerprint: 46F5 9FBD 57D6 12E7 BFD4  E2F7 7E15 100C CD36 69B1
#      Subkey fingerprint: F133 3857 4B66 2389 866C  7682 BFFB D25F 78C7 AE83

* remotes/bonzini/tags/for-upstream: (69 commits)
  KVM: cleanup unnecessary #ifdef KVM_CAP_...
  target/i386: update MPX flags when CPL changes
  i2c: pm_smbus: Add the ability to force block transfer enable
  i2c: pm_smbus: Don't delay host status register busy bit when interrupts are enabled
  i2c: pm_smbus: Add interrupt handling
  i2c: pm_smbus: Add block transfer capability
  i2c: pm_smbus: Make the I2C block read command read-only
  i2c: pm_smbus: Fix the semantics of block I2C transfers
  i2c: pm_smbus: Clean up some style issues
  pc-dimm: assign and verify the "addr" property during pre_plug
  pc: drop memory region alignment check for 0
  util/oslib-win32: indicate alignment for qemu_anon_ram_alloc()
  pc-dimm: assign and verify the "slot" property during pre_plug
  ipmi: Use proper struct reference for BT vmstate
  vhost-scsi: expose 't10_pi' property for VIRTIO_SCSI_F_T10_PI
  vhost-scsi: unify vhost-scsi get_features implementations
  vhost-user-scsi: move host_features into VHostSCSICommon
  cpus: allow cpu_get_ticks out of BQL
  cpus: protect TimerState writes with a spinlock
  seqlock: add QemuLockable support
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-08-23 19:03:54 +01:00
Emilio G. Cota
068a5ea02f qom: convert the CPU list to RCU
Iterating over the list without using atomics is undefined behaviour,
since the list can be modified concurrently by other threads (e.g.
every time a new thread is created in user-mode).

Fix it by implementing the CPU list as an RCU QTAILQ. This requires
a little bit of extra work to traverse list in reverse order (see
previous patch), but other than that the conversion is trivial.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Message-Id: <20180819091335.22863-12-cota@braap.org>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2018-08-23 18:46:25 +02:00
Richard Henderson
259841c153 linux-user: Propagate goto fail to return
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180818190118.12911-8-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-08-21 23:54:48 +02:00
Richard Henderson
1a7b2b13c9 linux-user: Propagate goto unimplemented to default
There is no point in listing a syscall if you want the same effect as
not listing it.  In one less trivial case, the goto was demonstrably
not reachable.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180818190118.12911-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-08-21 23:55:14 +02:00
Richard Henderson
10f45d98f2 linux-user: Propagate goto unimplemented_nowarn to return
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180818190118.12911-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-08-21 23:54:48 +02:00
Richard Henderson
2852aafd9d linux-user: Propagate goto efault to return
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180818190118.12911-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-08-21 23:54:48 +02:00
Richard Henderson
72eb7ea8f9 linux-user: Relax single exit from "break"
Transform outermost "break" to "return ret".  If the immediately
preceeding statement was an assignment to ret, return the value
directly.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180818190118.12911-4-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-08-21 23:54:48 +02:00
Richard Henderson
dc1ce18b2b linux-user: Split out do_syscall1
There was supposed to be a single point of return for do_syscall
so that tracing works properly.  However, there are a few bugs
in that area.  It is significantly simpler to simply split out
an inner function to enforce this.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180818190118.12911-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-08-21 19:42:52 +02:00
Richard Henderson
8a85e5dd3b linux-user: Remove DEBUG
This is redundant with both -strace and actual tracing.

Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180818190118.12911-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-08-21 19:42:23 +02:00
Laurent Vivier
70c61d4f78 linux-user: add QEMU_IFLA_INFO_KIND nested type for tun
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180820171557.7734-5-laurent@vivier.eu>
2018-08-20 22:07:40 +02:00
Laurent Vivier
90cce2a106 linux-user: update netlink route types
Add RTA_PREF and RTA_CACHEINFO.

Fix following errors when we start gedit:

  Unknown host RTA type: 12
  Unknown host RTA type: 20

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180820171557.7734-4-laurent@vivier.eu>
2018-08-20 22:07:19 +02:00
Laurent Vivier
3c3ab559c1 linux-user: introduce QEMU_RTA_* to use with rtattr_type_t
Following commit will introduce RTA_PREF that appears only with
kernel v4.1. To avoid to manage a specific case for it, this patch
introduces the full list of rtattr_type_t prefixed with QEMU_ (as we
did for IFLA values)

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180820171557.7734-3-laurent@vivier.eu>
[lv: added more RTA_* from linux v4.18]
2018-08-20 22:05:42 +02:00
Laurent Vivier
2a03d3e6ae linux-user: fix recvmsg()/recvfrom() with netlink and MSG_TRUNC
If recvmsg()/recvfrom() are used with the MSG_TRUNC flag, they return the
real length even if it was longer than the passed buffer.
So when we translate the buffer we must check we don't go beyond the
end of the buffer.

Bug: https://github.com/vivier/qemu-m68k/issues/33
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180820171557.7734-2-laurent@vivier.eu>
2018-08-20 22:03:49 +02:00
Laurent Vivier
3e23de1523 linux-user: fix 32bit g2h()/h2g()
sparc32plus has 64bit long type but only 32bit virtual address space.

For instance, "apt-get upgrade" failed because of a mmap()/msync()
sequence.

mmap() returned 0xff252000 but msync() used g2h(0xffffffffff252000)
to find the host address. The "(target_ulong)" in g2h() doesn't fix the
address because it is 64bit long.

This patch introduces an "abi_ptr" that is set to uint32_t
if the virtual address space is addressed using 32bit in the linux-user
case. It stays set to target_ulong with softmmu case.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180814171217.14680-1-laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[lv: added "%" in TARGET_ABI_FMT_ptr "%"PRIx64]
2018-08-17 13:56:33 +02:00
Peter Maydell
b8f7ff1e10 MIPS queue Aug 16, 2018
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Merge remote-tracking branch 'remotes/amarkovic/tags/mips-queue-aug-2018' into staging

MIPS queue Aug 16, 2018

# gpg: Signature made Thu 16 Aug 2018 18:19:36 BST
# gpg:                using RSA key D4972A8967F75A65
# gpg: Good signature from "Aleksandar Markovic <amarkovic@wavecomp.com>"
# 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: 8526 FBF1 5DA3 811F 4A01  DD75 D497 2A89 67F7 5A65

* remotes/amarkovic/tags/mips-queue-aug-2018:
  qemu-doc: Amend MIPS-related items
  linux-user: Add preprocessor availability control to some syscalls
  linux-user: Update MIPS syscall numbers up to kernel 4.18 headers
  elf: Add ELF flags for MIPS machine variants
  elf: Remove duplicate preprocessor constant definition
  target/mips: Check ELPA flag only in some cases of MFHC0 and MTHC0
  target/mips: Don't update BadVAddr register in Debug Mode
  target/mips: Implement CP0 Config1.WR bit functionality
  target/mips: Add CP0 BadInstrX register
  target/mips: Update some CP0 registers bit definitions
  target/mips: Fix two instances of shadow variables
  target/mips: Mark switch fallthroughs with interpretable comments
  target/mips: Avoid case statements formulated by ranges - part 2
  target/mips: Avoid case statements formulated by ranges - part 1
  MAINTAINERS: Update target/mips maintainer's email addresses

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-08-16 19:02:21 +01:00
Aleksandar Rikalo
4f7f892420 linux-user: Add preprocessor availability control to some syscalls
Add ability to target platforms to individually include user-mode
support for system calls from "stat" group of system calls.

This change is related to new nanoMIPS platform in the sense that
it supports a different set of "stat" system calls than any other
target. nanoMIPS does not support structures stat and stat64 at
all. Also, support for certain number of other system calls is
dropped in nanoMIPS (those are most of the time obsoleted system
calls).

Without this patch, build for nanoMIPS would fail.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-08-16 19:18:45 +02:00
Aleksandar Markovic
977324ac8c linux-user: Update MIPS syscall numbers up to kernel 4.18 headers
Synchronize content of linux-user/mips/syscall_nr.h and
linux-user/mips64/syscall_nr.h with Linux kernel 4.18 headers.
This adds 9 new syscall numbers, the last being NR_io_pgetevents.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Signed-off-by: Stefan Markovic <smarkovic@wavecomp.com>
2018-08-16 19:18:45 +02:00
Richard Henderson
adf92eab90 target/arm: Add sve-max-vq cpu property to -cpu max
This allows the default (and maximum) vector length to be set
from the command-line.  Which is extraordinarily helpful in
debugging problems depending on vector length without having to
bake knowledge of PR_SET_SVE_VL into every guest binary.

Cc: qemu-stable@nongnu.org (3.0.1)
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-08-16 14:05:28 +01:00
Shivaprasad G Bhat
5d9f3ea081 linux-user: ppc64: don't use volatile register during safe_syscall
r11 is a volatile register on PPC as per calling conventions.
The safe_syscall code uses it to check if the signal_pending
is set during the safe_syscall. When a syscall is interrupted
on return from signal handling, the r11 might be corrupted
before we retry the syscall leading to a crash. The registers
r0-r13 are not to be used here as they have
volatile/designated/reserved usages.

Change the code to use r14 which is non-volatile.
Use SP+16 which is a slot for LR, for save/restore of previous value
of r14. SP+16 can be used, as LR is preserved across the syscall.

Steps to reproduce:
On PPC host, issue `qemu-x86_64 /usr/bin/cc -E -`
Attempt Ctrl-C, the issue is reproduced.

Reference:
https://refspecs.linuxfoundation.org/ELF/ppc64/PPC-elf64abi-1.9.html#REG
https://openpowerfoundation.org/wp-content/uploads/2016/03/ABI64BitOpenPOWERv1.1_16July2015_pub4.pdf

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com>
Tested-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <153301568965.30312.10498134581068746871.stgit@dhcp-9-109-246-16>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-07-31 09:57:43 +02:00
Alex Bennée
38138fab93 linux-user/mmap.c: handle invalid len maps correctly
I've slightly re-organised the check to more closely match the
sequence that the kernel uses in do_mmap(). We check for both the zero
case (EINVAL) and the overflow length case (ENOMEM).

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Cc: umarcor <1783362@bugs.launchpad.net>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180730134321.19898-2-alex.bennee@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-07-31 09:57:25 +02:00
Richard Henderson
fa97e38eed linux-user/ppc: Implement swapcontext syscall
This allows the tests generated by debian-powerpc-user-cross
to function properly, especially tests/test-coroutine.

Technically this syscall is available to both ppc32 and ppc64,
but only ppc32 glibc actually uses it.  Thus the ppc64 path is
untested.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Tested-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180718200648.22529-1-richard.henderson@linaro.org>
2018-07-22 21:33:45 +02:00
Laurent Vivier
33143c446e linux-user: fix ELF load alignment error
When we try to use some targets on ppc64, it can happen the target
doesn't support the host page size to align ELF load sections and
fails with:

  ELF load command alignment not page-aligned

Since commit a70daba377 ("linux-user: Tell guest about big host
page sizes") the host page size is used to align ELF sections, but
this doesn't work if the alignment required by the load section is
smaller than the host one.  For these cases, we continue to use the
TARGET_PAGE_SIZE instead of the host one.

I have tested this change on ppc64, and it fixes qemu linux-user for:
  s390x, m68k, i386, arm, aarch64, hppa
and I have tested it doesn't break the following targets:
  x86_64, mips64el, sh4
mips and mipsel abort, but I think for another reason.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[lv: fixed "info->alignment = 0"]
Message-Id: <20180716195349.29959-1-laurent@vivier.eu>
2018-07-22 21:32:50 +02:00
Jonas Schievink
1d3d1b23e1 Zero out the host's msg_control buffer
If this is not done, qemu would drop any control message after the first
one.

This is because glibc's `CMSG_NXTHDR` macro accesses the uninitialized
cmsghdr's length field in order to find out if the message fits into the
`msg_control` buffer, wrongly assuming that it doesn't because the
length field contains garbage. Accessing the length field is fine for
completed messages we receive from the kernel, but is - as far as I know
- not needed since the kernel won't return such an invalid cmsghdr in
the first place.

This is tracked as this glibc bug:
https://sourceware.org/bugzilla/show_bug.cgi?id=13500

It's probably also a good idea to bail with an error if `CMSG_NXTHDR`
returns NULL but `TARGET_CMSG_NXTHDR` doesn't (ie. we still expect
cmsgs).

Signed-off-by: Jonas Schievink <jonasschievink@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180711221244.31869-1-jonasschievink@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-07-15 16:04:38 +02:00
Laurent Vivier
dc18baaef3 linux-user: fix mmap_find_vma_reserved()
The value given by mmap_find_vma_reserved() is used with mmap(),
so it is needed to be aligned with the host page size.

Since commit 18e80c55bb, reserved_va is only aligned to TARGET_PAGE_SIZE,
and it works well if this size is greater or equal to the host page size.

But ppc64 hosts have 64kB page size and when we start a 4kiB page size
guest (like i386), it fails when it tries to mmap the stack:

    mmap stack: Invalid argument

Fixes: 18e80c55bb (linux-user: Tidy and enforce reserved_va initialization)
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20180714193553.30846-1-laurent@vivier.eu>
2018-07-15 16:01:31 +02:00
Laurent Vivier
af8ab2bf22 linux-user: convert remaining fcntl() to safe_fcntl()
Commit 435da5e709 didn't convert a fcntl() call to safe_fcntl()
for TARGET_NR_fcntl64 case. There is no reason to not use it
in this case.

Fixes: 435da5e709 linux-user: Use safe_syscall wrapper for fcntl
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20180713125805.10749-1-laurent@vivier.eu>
2018-07-15 16:01:15 +02:00
Shivaprasad G Bhat
4a5457616d linux-user: ppc64: use the correct values for F_*LK64s
Qemu includes the glibc headers for the host defines and target headers are
part of the qemu source themselves. The glibc has the F_GETLK64, F_SETLK64
and F_SETLKW64 defined to 12, 13 and 14 for all archs in
sysdeps/unix/sysv/linux/bits/fcntl-linux.h. The linux kernel generic
definition for F_*LK is 5, 6 & 7 and F_*LK64* is 12,13, and 14 as seen in
include/uapi/asm-generic/fcntl.h. On 64bit machine, by default the kernel
assumes all F_*LK to 64bit calls and doesnt support use of F_*LK64* as
can be seen in include/linux/fcntl.h in linux source.

On x86_64 host, the values for F_*LK64* are set to 5, 6 and 7
explicitly in /usr/include/x86_64-linux-gnu/bits/fcntl.h by the glibc.
Whereas, a PPC64 host doesn't have such a definition in
/usr/include/powerpc64le-linux-gnu/bits/fcntl.h by the glibc. So,
the sources on PPC64 host sees the default value of F_*LK64*
as 12, 13 & 14(fcntl-linux.h).

Since the 64bit kernel doesnt support 12, 13 & 14; the glibc fcntl syscall
implementation(__libc_fcntl*(), __fcntl64_nocancel) does the F_*LK64* value
convertion back to F_*LK* values on PPC64 as seen in
sysdeps/unix/sysv/linux/powerpc/powerpc64/sysdep.h with FCNTL_ADJUST_CMD()
macro. Whereas on x86_64 host the values for F_*LK64* are set to 5, 6 and 7
and no adjustments are needed.

Since qemu doesnt use the glibc fcntl, but makes the safe_syscall* on its
own, the PPC64 qemu is calling the syscall with 12, 13, and 14(without
adjustment) and they all fail. The fcntl calls to F_GETLK/F_SETLK|W all
fail by all pplications run on PPC64 host user emulation.

The fix here could be to see why on PPC64 the glibc is still keeping
F_*LK64* different from F_*LK and why adjusting them to 5, 6 and 7 before
the syscall for PPC only. See if we can make the
/usr/include/powerpc64le-linux-gnu/bits/fcntl.h to have the values
5, 6 & 7 just like x86_64 and remove the adjustment code in glibc. That
way, qemu sources see the kernel supported values in glibc headers.

OR

On PPC64 host, qemu sources see both F_*LK & F_*LK64* as same and set to
12, 13 and 14 because __USE_FILE_OFFSET64 is defined in qemu
sources(also refer sysdeps/unix/sysv/linux/bits/fcntl-linux.h).
Do the value adjustment just like it is done by glibc source by using
F_GETLK value of 5. That way, we make the syscalls with the actual
supported values in Qemu. The patch is taking this approach.

Signed-off-by: Shivaprasad G Bhat <sbhat@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <153148521235.87746.14142430397318741182.stgit@lep8c.aus.stglabs.ibm.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-07-15 16:00:49 +02:00
Philippe Mathieu-Daudé
84ca4fa99d linux-user: Report error message on stderr, rather than stdout
Code change produced with:

  git ls-files linux-user | \
  xargs sed -i -E 's/(\s+)printf\s*\(("Unhandled.*)\);/\1fprintf(stderr, \2);/g'

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180706155127.7483-4-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-07-09 00:52:50 +02:00
Philippe Mathieu-Daudé
8f0ea81643 linux-user: Do not report "syscall not implemented" by default
This can still be reported using the "-d unimp" command line option.

Code change produced with:

  git ls-files linux-user | \
  xargs sed -i -E 's/fprintf\(stderr,\s?(".*not implemented\\n")\);/qemu_log_mask(LOG_UNIMP, \1);/g'

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180706155127.7483-3-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-07-09 00:52:04 +02:00
Philippe Mathieu-Daudé
122f9c83f2 linux-user: Do not report "Unsupported syscall" by default
This can still be reported using the "-d unimp" command line option.

Fixes: https://bugs.launchpad.net/qemu/+bug/1777226
Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Suggested-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20180706155127.7483-2-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-07-09 00:51:05 +02:00