Commit Graph

2309 Commits

Author SHA1 Message Date
Suraj Jitindar Singh 5d62725b2f target/ppc: Implement the VTB for HV access
The virtual timebase register (VTB) is a 64-bit register which
increments at the same rate as the timebase register, present on POWER8
and later processors.

The register is able to be read/written by the hypervisor and read by
the supervisor. All other accesses are illegal.

Currently the VTB is just an alias for the timebase (TB) register.

Implement the VTB so that is can be read/written independent of the TB.
Make use of the existing method for accessing timebase facilities where
by the compensation is stored and used to compute the value on reads/is
updated on writes.

Signed-off-by: Suraj Jitindar Singh <sjitindarsingh@gmail.com>
[ clg: rebased on current ppc tree ]
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20191128134700.16091-2-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2019-12-17 10:39:48 +11:00
Beata Michalska 0d57b49992 target/arm: Add support for DC CVAP & DC CVADP ins
ARMv8.2 introduced support for Data Cache Clean instructions
to PoP (point-of-persistence) - DC CVAP and PoDP (point-of-deep-persistence)
- DV CVADP. Both specify conceptual points in a memory system where all writes
that are to reach them are considered persistent.
The support provided considers both to be actually the same so there is no
distinction between the two. If none is available (there is no backing store
for given memory) both will result in Data Cache Clean up to the point of
coherency. Otherwise sync for the specified range shall be performed.

Signed-off-by: Beata Michalska <beata.michalska@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191121000843.24844-5-beata.michalska@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-12-16 10:46:35 +00:00
Ariadne Conill d1e2670741 linux-user: fix translation of statx structures
All timestamps were copied to atime instead of to their respective
fields.

Fixes: efa921845c ("linux-user: Add support for translation of statx() syscall")
Signed-off-by: Ariadne Conill <ariadne@dereferenced.org>
Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191122174040.569252-1-ariadne@dereferenced.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-25 12:57:58 +01:00
Laurent Vivier 0f1f2d4596 linux-user: remove host stime() syscall
stime() has been withdrawn from glibc
(12cbde1dae6f "Use clock_settime to implement stime; withdraw stime.")

Implement the target stime() syscall using host
clock_settime(CLOCK_REALTIME, ...) as it is done internally in glibc.

Tested qemu-ppc/x86_64 with:

	#include <time.h>
	#include <stdio.h>

	int main(void)
	{
		time_t t;
		int ret;

		/* date -u -d"2019-11-12T15:11:00" "+%s" */
		t = 1573571460;
		ret = stime(&t);
		printf("ret %d\n", ret);
		return 0;
	}

        # date; ./stime; date
        Tue Nov 12 14:18:32 UTC 2019
        ret 0
        Tue Nov 12 15:11:00 UTC 2019

Buglink: https://bugs.launchpad.net/qemu/+bug/1852115
Reported-by: Cole Robinson <crobinso@redhat.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20191112142556.6335-1-laurent@vivier.eu>
2019-11-12 17:05:57 +01:00
Laurent Vivier c0cb880153 linux-user: fix missing break
Reported by Coverity (CID 1407221)
Fixes: a2d866827b ("linux-user: Support for NETLINK socket options")
cc: Josh Kunz <jkz@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191112105055.32269-1-laurent@vivier.eu>
2019-11-12 17:05:24 +01:00
Richard Henderson 5849dfe410 linux-user/alpha: Set r20 secondary return value
This value is not, as far as I know, used by any linux software,
but it is set by the kernel and is part of the ABI.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-13-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 13:45:05 +01:00
Richard Henderson 2ad983e0f4 linux-user/sparc: Fix cpu_clone_regs_*
We failed to set the secondary return value in %o1
we failed to advance the PC past the syscall,
we failed to adjust regwptr into the new structure,
we stored the stack pointer into the wrong register.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191106113318.10226-12-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 13:44:19 +01:00
Richard Henderson 07a6ecf48f linux-user: Introduce cpu_clone_regs_parent
We will need a target-specific hook for adjusting registers
in the parent during clone.  Add an empty inline function for
each target, and invoke it from the proper places.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191106113318.10226-11-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 13:43:25 +01:00
Richard Henderson 608999d17c linux-user: Rename cpu_clone_regs to cpu_clone_regs_child
We will need a target-specific hook for adjusting registers
in the parent during clone.  To avoid confusion, rename the
one we have to make it clear it affects the child.

At the same time, pass in the flags from the clone syscall.
We will need them for correct behaviour for Sparc.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20191106113318.10226-10-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 13:42:34 +01:00
Richard Henderson b220cbcf25 linux-user/sparc64: Fix target_signal_frame
Instructions are always 4 bytes; use uint32_t not abi_ulong.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-9-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 13:40:15 +01:00
Richard Henderson 9c226a1107 linux-user/sparc: Fix WREG usage in setup_frame
Use WREG_I0 not WREG_O0 in order to properly save the "ins".
The "outs" were saved separately in setup___siginfo.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20191106113318.10226-8-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 13:39:26 +01:00
Richard Henderson 8d9c72a2e2 linux-user/sparc: Use WREG_SP constant in sparc/signal.c
s/UREG_FP/WREG_SP/g

This is non-obvious because the UREG_FP constant is fact wrong.
However, the previous search-and-replace patch made it clear that
UREG_FP expands to WREG_O6, and we can see from the enumeration in
target/sparc/cpu.h that WREG_O6 is in fact WREG_SP, the stack pointer.

The UREG_SP define is unused; remove it.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-7-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 13:38:42 +01:00
Richard Henderson 80180eb2ca linux-user/sparc: Begin using WREG constants in sparc/signal.c
This is non-obvious because the UREG constants are in fact wrong.

s/UREG_I/WREG_O/g
s/UREG_O/WREG_I/g
s/UREG_L/WREG_L/g

These substitutions have identical integer values.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-6-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 13:37:59 +01:00
Richard Henderson 083244d320 linux-user/sparc: Use WREG constants in sparc/target_cpu.h
This fixes a naming bug wherein we used "UREG_FP" to access the
stack pointer.  OTOH, the "UREG_FP" constant was also defined
incorrectly such that it *did* reference the stack pointer.

Note that the kernel legitimately uses the name "FP", because it
utilizes the rolled stack window in processing the system call.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191106113318.10226-5-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06 13:36:32 +01:00
Josh Kunz a2d866827b linux-user: Support for NETLINK socket options
This change includes support for all AF_NETLINK socket options up to about
kernel version 5.4 (5.4 is not formally released at the time of writing).
Socket options that were introduced in kernel versions before the oldest
currently stable kernel version are guarded by kernel version macros.

This change has been built under gcc 8.3, and clang 9.0, and it passes
`make check`. The netlink options have been tested by emulating some
non-trival software that uses NETLINK socket options, but they have
not been exaustively verified.

Signed-off-by: Josh Kunz <jkz@google.com>
Message-Id: <20191029224310.164025-1-jkz@google.com>
[lv: updated patch according to CODING_STYLE]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-05 10:19:29 +01:00
Peter Maydell 68d8ef4ec5 TCG Plugins initial implementation
- use --enable-plugins @ configure
   - low impact introspection (-plugin empty.so to measure overhead)
   - plugins cannot alter guest state
   - example plugins included in source tree (tests/plugins)
   - -d plugin to enable plugin output in logs
   - check-tcg runs extra tests when plugins enabled
   - documentation in docs/devel/plugins.rst
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Merge remote-tracking branch 'remotes/stsquad/tags/pull-tcg-plugins-281019-4' into staging

TCG Plugins initial implementation

  - use --enable-plugins @ configure
  - low impact introspection (-plugin empty.so to measure overhead)
  - plugins cannot alter guest state
  - example plugins included in source tree (tests/plugins)
  - -d plugin to enable plugin output in logs
  - check-tcg runs extra tests when plugins enabled
  - documentation in docs/devel/plugins.rst

# gpg: Signature made Mon 28 Oct 2019 15:13:23 GMT
# 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-tcg-plugins-281019-4: (57 commits)
  travis.yml: enable linux-gcc-debug-tcg cache
  MAINTAINERS: add me for the TCG plugins code
  scripts/checkpatch.pl: don't complain about (foo, /* empty */)
  .travis.yml: add --enable-plugins tests
  include/exec: wrap cpu_ldst.h in CONFIG_TCG
  accel/stubs: reduce headers from tcg-stub
  tests/plugin: add hotpages to analyse memory access patterns
  tests/plugin: add instruction execution breakdown
  tests/plugin: add a hotblocks plugin
  tests/tcg: enable plugin testing
  tests/tcg: drop test-i386-fprem from TESTS when not SLOW
  tests/tcg: move "virtual" tests to EXTRA_TESTS
  tests/tcg: set QEMU_OPTS for all cris runs
  tests/tcg/Makefile.target: fix path to config-host.mak
  tests/plugin: add sample plugins
  linux-user: support -plugin option
  vl: support -plugin option
  plugin: add qemu_plugin_outs helper
  plugin: add qemu_plugin_insn_disas helper
  plugin: expand the plugin_init function to include an info block
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-10-30 14:10:32 +00:00
Lluís Vilanova f308f64e76 linux-user: support -plugin option
Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu>
[ cota: s/instrument/plugin ]
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-10-28 15:12:38 +00:00
Emilio G. Cota c36f7a642c *-user: plugin syscalls
To avoid too much duplication add a wrapper that the existing trace
and the new plugin calls can live in. We could move the -strace code
here as well but that is left for a future series as the code is
subtly different between the bsd and linux.

Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
[AJB: wrap in syscall-trace.h, expand commit msg]
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-10-28 15:12:38 +00:00
Emilio G. Cota 8634d77bdb *-user: notify plugin of exit
Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Emilio G. Cota <cota@braap.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
2019-10-28 15:12:38 +00:00
Giuseppe Musacchio 2921343b3d
linux-user/riscv: Propagate fault address
The CPU loop tagged all the queued signals as QEMU_SI_KILL while it was
filling the `_sigfault` part of `siginfo`: this caused QEMU to copy the
wrong fields over to the userspace program.

Make sure the fault address recorded by the MMU is is stored in the CPU
environment structure.

In case of memory faults store the exception address into `siginfo`.

Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com>
Reviewed-by: Palmer Dabbelt <palmer@sifive.com>
Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
2019-10-28 07:47:27 -07:00
Richard Henderson 37bf16c645 linux-user/arm: Rebuild hflags for TARGET_WORDS_BIGENDIAN
Continue setting, but not relying upon, env->hflags.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-24-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-10-24 17:16:28 +01:00
Richard Henderson 62fb8a4789 linux-user/aarch64: Rebuild hflags for TARGET_WORDS_BIGENDIAN
Continue setting, but not relying upon, env->hflags.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-23-richard.henderson@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-10-24 17:16:28 +01:00
Richard Henderson a8a79c7a07 target/arm: Rebuild hflags at EL changes
Begin setting, but not relying upon, env->hflags.

Reviewed-by: Alex Bennée <alex.bennee@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20191023150057.25731-17-richard.henderson@linaro.org
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-10-24 17:16:28 +01:00
Philippe Mathieu-Daudé 9a68960d8e linux-user/syscall: Align target_sockaddr fields using ABI types
Target architectures align types differently for instance m68k
aligns on 16bit whereas others on 32bit).
Use ABI types to keep alignments good.

Suggested-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191021114857.20538-10-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 15:37:04 +02:00
Philippe Mathieu-Daudé 42b15d70cf linux-user/strace: Let print_sockaddr() have a 'last' argument
If the format is not the syscall last argument, a comma is append.

Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191021114857.20538-9-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 15:37:04 +02:00
Philippe Mathieu-Daudé bb10540e76 linux-user/strace: Improve bind() output
Tested-By: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20191021114857.20538-8-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 15:37:04 +02:00
Philippe Mathieu-Daudé d84fe1ede7 linux-user/strace: Add print_sockfd()
Extract common print_sockfd() from various socket related syscalls.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20191021114857.20538-7-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 15:37:04 +02:00
Philippe Mathieu-Daudé 814ae70ff9 linux-user/strace: Dump AF_NETLINK sockaddr content
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-By: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191021114857.20538-6-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 15:36:59 +02:00
Philippe Mathieu-Daudé a47401bca7 linux-user/syscall: Introduce target_sockaddr_nl
Tested-By: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20191021114857.20538-5-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 15:25:59 +02:00
Philippe Mathieu-Daudé 0d2187c4e0 linux-user/strace: Improve settimeofday()
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Tested-By: Guido Günther <agx@sigxcpu.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191021114857.20538-4-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 15:25:20 +02:00
Philippe Mathieu-Daudé 6d33e03611 linux-user/strace: Add print_timezone()
Suggested-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191021114857.20538-3-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 15:24:26 +02:00
Philippe Mathieu-Daudé 8f93089d0a linux-user/strace: Display invalid pointer in print_timeval()
Suggested-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20191021114857.20538-2-f4bug@amsat.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 15:22:37 +02:00
Shu-Chun Weng 1645fb5a1e Fix unsigned integer underflow in fd-trans.c
In any of these `*_for_each_*` functions, the last entry in the buffer (so the
"remaining length in the buffer" `len` is equal to the length of the
entry `nlmsg_len`/`nla_len`/etc) has size that is not a multiple of the
alignment, the aligned lengths `*_ALIGN(*_len)` will be greater than `len`.
Since `len` is unsigned (`size_t`), it underflows and the loop will read
pass the buffer.

This may manifest as random EINVAL or EOPNOTSUPP error on IO or network
system calls.

Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20191018001920.178283-1-scw@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 11:34:18 +02:00
Andreas Schwab 53bdbfdf53 linux-user: add strace for dup3
Signed-off-by: Andreas Schwab <schwab@suse.de>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <mvmsgoe17l5.fsf@suse.de>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-10-21 11:30:04 +02:00
Peter Maydell 786d36ad41 target-arm queue:
* Fix the CBAR register implementation for Cortex-A53,
    Cortex-A57, Cortex-A72
  * Fix direct booting of Linux kernels on emulated CPUs
    which have an AArch32 EL3 (incorrect NSACR settings
    meant they could not access the FPU)
  * semihosting cleanup: do more work at translate time
    and less work at runtime
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Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20190927' into staging

target-arm queue:
 * Fix the CBAR register implementation for Cortex-A53,
   Cortex-A57, Cortex-A72
 * Fix direct booting of Linux kernels on emulated CPUs
   which have an AArch32 EL3 (incorrect NSACR settings
   meant they could not access the FPU)
 * semihosting cleanup: do more work at translate time
   and less work at runtime

# gpg: Signature made Fri 27 Sep 2019 15:32:43 BST
# gpg:                using RSA key E1A5C593CD419DE28E8315CF3C2525ED14360CDE
# gpg:                issuer "peter.maydell@linaro.org"
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@gmail.com>" [ultimate]
# gpg:                 aka "Peter Maydell <pmaydell@chiark.greenend.org.uk>" [ultimate]
# Primary key fingerprint: E1A5 C593 CD41 9DE2 8E83  15CF 3C25 25ED 1436 0CDE

* remotes/pmaydell/tags/pull-target-arm-20190927:
  hw/arm/boot: Use the IEC binary prefix definitions
  hw/arm/boot.c: Set NSACR.{CP11,CP10} for NS kernel boots
  tests/tcg: add linux-user semihosting smoke test for ARM
  target/arm: remove run-time semihosting checks for linux-user
  target/arm: remove run time semihosting checks
  target/arm: handle A-profile semihosting at translate time
  target/arm: handle M-profile semihosting at translate time
  tests/tcg: clean-up some comments after the de-tangling
  target/arm: fix CBAR register for AArch64 CPUs

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

# Conflicts:
#	tests/tcg/arm/Makefile.target
2019-09-30 11:02:22 +01:00
Alex Bennée e267255957 target/arm: remove run-time semihosting checks for linux-user
Now we do all our checking at translate time we can make cpu_loop a
little bit simpler. We also introduce a simple linux-user semihosting
test case to defend the functionality. The out-of-tree softmmu based
semihosting tests are still more comprehensive.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Message-id: 20190913151845.12582-6-alex.bennee@linaro.org
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2019-09-27 11:41:32 +01:00
Alex Bennée 2762f04d50 target/ppc: fix signal delivery for ppc64abi32
We were incorrectly using the 64-bit AIX ABI instead of the 32-bit
SYSV ABI for setting NIP for the signal handler.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
2019-09-26 19:00:53 +01:00
Aleksandar Markovic 5eea942900 linux-user: Add support for FDRESET, FDRAWCMD, FDTWADDLE, and FDEJECT ioctls
FDRESET, FDRAWCMD, FDTWADDLE, and FDEJECT ioctls are misc commands
for controlling a floppy drive.

Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1567601968-26946-7-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:47:06 +02:00
Aleksandar Markovic 7e35fc8b1e linux-user: Add support for FDMSGON and FDMSGOFF ioctls
FDMSGON and FDMSGOFF switch informational messages of floppy drives
on and off.

Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1567601968-26946-6-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:47:06 +02:00
Yunqiang Su ab22b4dd74 linux-user: Add support for FDFLUSH ioctl
FDFLUSH is used for flushing buffers of floppy drives. Support in
QEMU is needed because some of Debian packages use this ioctl while
running post-build tests. One such example is 'tar' package.

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: <1567601968-26946-5-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:47:06 +02:00
Aleksandar Markovic 4e4b173fa1 linux-user: Add support for FIOGETOWN and FIOSETOWN ioctls
FIOGETOWN and FIOSETOWN ioctls have platform-specific definitions,
hence non-standard definition in QEMU too.

Other than that, they both have a single integer argument, and their
functionality is emulated in a straightforward way.

Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1567601968-26946-4-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:47:06 +02:00
Aleksandar Markovic 92c096f0aa linux-user: Add support for RNDRESEEDCRNG ioctl
RNDRESEEDCRNG is a newer ioctl (added in kernel 4.17), and an
"ifdef" guard is used for that reason in this patch.

Signed-off-by: Aleksandar Markovic <amarkovic@wavecomp.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <1567601968-26946-3-git-send-email-aleksandar.markovic@rt-rk.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:47:06 +02:00
Max Filippov 1cc5274016 linux-user: drop redundant handling of environment variables
QEMU_STRACE and QEMU_RAND_SEED are handled by the parse_args, no need to
do it again in main.

Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190906165736.5612-1-jcmvbkbc@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:47:06 +02:00
Max Filippov 130ea8322b target/xtensa: linux-user: add call0 ABI support
Xtensa binaries built for call0 ABI don't rotate register window on
function calls and returns. Invocation of signal handlers from the
kernel is therefore different in windowed and call0 ABIs.
There's currently no way to determine xtensa ELF binary ABI from the
binary itself. Add handler for the -xtensa-abi-call0 command line
parameter/QEMU_XTENSA_ABI_CALL0 envitonment variable to the qemu-user
and record ABI choice. Use it to initialize PS.WOE in xtensa_cpu_reset.
Check PS.WOE in setup_rt_frame to determine how a signal should be
delivered.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Message-Id: <20190906165713.5558-1-jcmvbkbc@gmail.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:47:06 +02:00
Josh Kunz dc12567a53 linux-user: Support gdb 'qOffsets' query for ELF
This is needed to support debugging PIE ELF binaries running under QEMU
user mode. Currently, `code_offset` and `data_offset` remain unset for
all ELF binaries, so GDB is unable to correctly locate the position of
the binary's text and data.

The fields `code_offset`, and `data_offset` were originally added way
back in 2006 to support debugging of bFMT executables (978efd6aac),
and support was just never added for ELF. Since non-PIE binaries are
loaded at exactly the address specified in the binary, GDB does not need
to relocate any symbols, so the buggy behavior is not normally observed.

http://sourceware.org/gdb/onlinedocs/gdb/General-Query-Packets.html#index-qOffsets-packet

Buglink: https://bugs.launchpad.net/qemu/+bug/1528239
Signed-off-by: Josh Kunz <jkz@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20190816233422.16715-1-jkz@google.com>
[lv: added link to documentation]
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:46:52 +02:00
Richard Henderson 0b689da375 linux-user/arm: Adjust MAX_RESERVED_VA for M-profile
Limit the virtual address space for M-profile cpus to 2GB,
so that we avoid all of the magic addresses in the top half
of the M-profile system map.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20190822185929.16891-3-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:46:34 +02:00
Richard Henderson 8f67b9c694 linux-user: Pass CPUState to MAX_RESERVED_VA
Turn the scalar macro into a functional macro.  Move the creation
of the cpu up a bit within main() so that we can pass it to the
invocation of MAX_RESERVED_VA.  Delay the validation of the -R
parameter until MAX_RESERVED_VA is computed.

So far no changes to any of the MAX_RESERVED_VA macros to actually
use the cpu in any way, but ARM will need it.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Message-Id: <20190822185929.16891-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:46:34 +02:00
Shu-Chun Weng 9bdfa4d23f linux-user: add memfd_create
Add support for the memfd_create syscall. If the host does not have the
libc wrapper, translate to a direct syscall with NC-macro.

Buglink: https://bugs.launchpad.net/qemu/+bug/1734792
Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190819180947.180725-1-scw@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:46:17 +02:00
Alex Bennée 7f4341e84b linux-user: fail and report on bad dfilter specs
Just passing NULL means we end up ignoring the bad dfilter spec
instead of reporting it and exiting as we should.

Signed-off-by: Alex Bennée <alex.bennee@linaro.org>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190830143648.2967-1-alex.bennee@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:46:05 +02:00
Shu-Chun Weng 895e2ef521 linux-user: erroneous fd_trans_unregister call
timer_getoverrun returns the "overrun count" for the timer, which is not
a file descriptor and thus should not call fd_trans_unregister on it.

Signed-off-by: Shu-Chun Weng <scw@google.com>
Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Message-Id: <20190819185348.221825-1-scw@google.com>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-09-11 08:45:57 +02:00