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2019-12-17target/ppc: Implement the VTB for HV accessSuraj Jitindar Singh
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>
2019-12-16target/arm: Add support for DC CVAP & DC CVADP insBeata Michalska
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>
2019-11-25linux-user: fix translation of statx structuresAriadne Conill
All timestamps were copied to atime instead of to their respective fields. Fixes: efa921845c03 ("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>
2019-11-12linux-user: remove host stime() syscallLaurent Vivier
stime() has been withdrawn from glibc (12cbde1dae6f "Use clock_settime to implement stime; withdraw stime.")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>
2019-11-12linux-user: fix missing breakLaurent Vivier
Reported by Coverity (CID 1407221) Fixes: a2d866827bd8 ("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>
2019-11-06linux-user/alpha: Set r20 secondary return valueRichard Henderson
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>
2019-11-06linux-user/sparc: Fix cpu_clone_regs_*Richard Henderson
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>
2019-11-06linux-user: Introduce cpu_clone_regs_parentRichard Henderson
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>
2019-11-06linux-user: Rename cpu_clone_regs to cpu_clone_regs_childRichard Henderson
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>
2019-11-06linux-user/sparc64: Fix target_signal_frameRichard Henderson
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>
2019-11-06linux-user/sparc: Fix WREG usage in setup_frameRichard Henderson
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>
2019-11-06linux-user/sparc: Use WREG_SP constant in sparc/signal.cRichard Henderson
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>
2019-11-06linux-user/sparc: Begin using WREG constants in sparc/signal.cRichard Henderson
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>
2019-11-06linux-user/sparc: Use WREG constants in sparc/target_cpu.hRichard Henderson
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>
2019-11-05linux-user: Support for NETLINK socket optionsJosh Kunz
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>
2019-10-30Merge remote-tracking branch ↵Peter Maydell
'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>
2019-10-28linux-user: support -plugin optionLluís Vilanova
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*-user: plugin syscallsEmilio G. Cota
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*-user: notify plugin of exitEmilio G. Cota
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>
2019-10-28linux-user/riscv: Propagate fault addressGiuseppe Musacchio
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>
2019-10-24linux-user/arm: Rebuild hflags for TARGET_WORDS_BIGENDIANRichard Henderson
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>
2019-10-24linux-user/aarch64: Rebuild hflags for TARGET_WORDS_BIGENDIANRichard Henderson
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>
2019-10-24target/arm: Rebuild hflags at EL changesRichard Henderson
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>
2019-10-21linux-user/syscall: Align target_sockaddr fields using ABI typesPhilippe Mathieu-Daudé
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>
2019-10-21linux-user/strace: Let print_sockaddr() have a 'last' argumentPhilippe Mathieu-Daudé
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>
2019-10-21linux-user/strace: Improve bind() outputPhilippe Mathieu-Daudé
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>
2019-10-21linux-user/strace: Add print_sockfd()Philippe Mathieu-Daudé
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>
2019-10-21linux-user/strace: Dump AF_NETLINK sockaddr contentPhilippe Mathieu-Daudé
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>
2019-10-21linux-user/syscall: Introduce target_sockaddr_nlPhilippe Mathieu-Daudé
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>
2019-10-21linux-user/strace: Improve settimeofday()Philippe Mathieu-Daudé
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>
2019-10-21linux-user/strace: Add print_timezone()Philippe Mathieu-Daudé
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>
2019-10-21linux-user/strace: Display invalid pointer in print_timeval()Philippe Mathieu-Daudé
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>
2019-10-21Fix unsigned integer underflow in fd-trans.cShu-Chun Weng
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>
2019-10-21linux-user: add strace for dup3Andreas Schwab
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>
2019-09-30Merge remote-tracking branch ↵Peter Maydell
'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
2019-09-27target/arm: remove run-time semihosting checks for linux-userAlex Bennée
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>
2019-09-26target/ppc: fix signal delivery for ppc64abi32Alex Bennée
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>
2019-09-11linux-user: Add support for FDRESET, FDRAWCMD, FDTWADDLE, and FDEJECT ioctlsAleksandar Markovic
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>
2019-09-11linux-user: Add support for FDMSGON and FDMSGOFF ioctlsAleksandar Markovic
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>
2019-09-11linux-user: Add support for FDFLUSH ioctlYunqiang Su
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>
2019-09-11linux-user: Add support for FIOGETOWN and FIOSETOWN ioctlsAleksandar Markovic
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>
2019-09-11linux-user: Add support for RNDRESEEDCRNG ioctlAleksandar Markovic
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>
2019-09-11linux-user: drop redundant handling of environment variablesMax Filippov
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>
2019-09-11target/xtensa: linux-user: add call0 ABI supportMax Filippov
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>
2019-09-11linux-user: Support gdb 'qOffsets' query for ELFJosh Kunz
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 (978efd6aac6), 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>
2019-09-11linux-user/arm: Adjust MAX_RESERVED_VA for M-profileRichard Henderson
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>
2019-09-11linux-user: Pass CPUState to MAX_RESERVED_VARichard Henderson
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>
2019-09-11linux-user: add memfd_createShu-Chun Weng
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>
2019-09-11linux-user: fail and report on bad dfilter specsAlex Bennée
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>
2019-09-11linux-user: erroneous fd_trans_unregister callShu-Chun Weng
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>
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