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2017-02-22target-ppc, tcg: fix usermode segfault with pthread_create()Sam Bobroff1-1/+2
Programs run under qemu-ppc64 on an x86_64 host currently segfault if they use pthread_create() due to the adjustment made to the NIP in commit bd6fefe71cec5a0c7d2be4ac96307f25db56abf9. This patch changes cpu_loop() to set the NIP back to the pre-incremented value before calling do_syscall(), which causes the correct address to be used for the new thread and corrects the fault. Signed-off-by: Sam Bobroff <sam.bobroff@au1.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
2017-02-16linux-user: Add FICLONE and FICLONERANGE ioctlsHelge Deller3-0/+15
Add missing FICLONE and FICLONERANGE ioctls. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20170211222602.GA6399@ls3530.fritz.box> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-02-16linux-user: Use correct types in load_symbols()Peter Maydell1-7/+15
Coverity doesn't like the code in load_symbols() which assumes it can use 'int' for a variable that might hold an offset into the guest ELF file, because in a 64-bit guest that could overflow. Guest binaries with 2GB sections aren't very likely and this isn't a security issue because we fully trust the guest linux-user binary anyway, but we might as well use the right types, which will placate Coverity. Use uint64_t to hold section sizes, and bail out if the symbol table is too large rather than just overflowing an int. (Coverity issue CID1005776) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <1486249533-5260-1-git-send-email-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-02-16linux-user: fill target sigcontext struct accordinglyJose Ricardo Ziviani1-0/+5
A segfault is noticed when an emulated program uses any of ucontext regs fields. Risu detected this issue in the following operation when handling a signal: ucontext_t *uc = (ucontext_t*)uc; uc->uc_mcontext.regs->nip += 4; but this works fine: uc->uc_mcontext.gp_regs[PT_NIP] += 4; This patch set regs to a valid location as well as other sigcontext fields. Signed-off-by: Jose Ricardo Ziviani <joserz@linux.vnet.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <1485900317-3256-1-git-send-email-joserz@linux.vnet.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-02-16linux-user: fix tcg/mmap testMarc-André Lureau1-3/+3
tests/tcg/mmap test fails with values other than default target page size. When creating a map beyond EOF, extra anonymous pages are added up to the target page boundary. Currently, this operation is performed only when qemu_real_host_page_size < TARGET_PAGE_SIZE, but it should be performed if the configured page size (qemu -p) is larger than qemu_real_host_page_size too. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> [pranith: dropped checkpatch changes] Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20170119151533.29328-2-bobby.prani@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-02-16linux-user: fix settime old value locationMarc-André Lureau1-2/+6
old_value is the 4th argument of timer_settime(), not the 2nd. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Pranith Kumar <bobby.prani@gmail.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20170119151533.29328-1-bobby.prani@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-02-16linux-user: Update m68k syscall definitions to match Linux 4.6John Paul Adrian Glaubitz1-0/+3
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20170116224915.19430-2-glaubitz@physik.fu-berlin.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-02-16linux-user: Update sh4 syscall definitions to match Linux 4.8John Paul Adrian Glaubitz1-0/+14
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20170116223140.18634-2-glaubitz@physik.fu-berlin.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2017-02-14linux-user: manage two new IFLA host message typesLaurent Vivier1-0/+2
Add QEMU_IFLA_GSO_MAX_SEGS and QEMU_IFLA_GSO_MAX_SIZE in host_to_target_data_link_rtattr(). These two messages are sent by the host kernel when we use "sudo". Found with qemu-m68k and Debian etch-m68k (sudo 1.6.8p12-4) and host kernel 4.7.6-200.fc24.x86_64 Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <1477530049-15676-1-git-send-email-laurent@vivier.eu>
2017-02-14linux-user: Fix mq_openLena Djokic1-3/+8
If fourth argument is NULL it should be passed without using lock_user function which would, in that case, return EFAULT, and system call supports passing NULL as fourth argument. Signed-off-by: Lena Djokic <Lena.Djokic@rt-rk.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2017-02-14linux-user: Fix readaheadLena Djokic1-1/+1
Calculation of 64-bit offset was not correct for all cases. Signed-off-by: Lena Djokic <Lena.Djokic@rt-rk.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2017-02-14linux-user: Fix inotify_init1 supportLena Djokic1-1/+2
This commit adds necessary conversion of argument passed to inotify_init1. inotify_init1 flags can be IN_NONBLOCK and IN_CLOEXEC which rely on O_NONBLOCK and O_CLOEXEC and those can have different values on different platforms. Signed-off-by: Lena Djokic <Lena.Djokic@rt-rk.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2017-02-14linux-user: Fix s390x safe-syscall for z900Richard Henderson1-1/+1
The LT instruction was added in the extended immediate facility introduced with the z9-109 processor. Cc: Riku Voipio <riku.voipio@iki.fi> Reported-by: Michael Tokarev <mjt@tls.msk.ru> Fixes: c9bc3437a905b660561a26cd4ecc64579843267b Suggested-by: Aurelien Jarno <aurelien@aurel32.net> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2017-02-14linux-user: drop __cygwin__ ifdefRiku Voipio1-3/+0
linux-user doesn't work on cygwin anyways. Cc: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2017-02-14linux-user: remove ifdef __USER_MISCRiku Voipio1-2/+0
This preprocessor macro isn't set anywhere. Remove the check so -strace can show these options. Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2017-02-14target/openrisc: Keep SR_F in a separate variableRichard Henderson2-4/+2
This avoids having to keep merging and extracting the flag from SR. Reviewed-by: Bastian Koppelmann <kbastian@mail.uni-paderborn.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-02-14linux-user: Honor CLONE_SETTLS for openriscRichard Henderson1-3/+1
Threads work much better when you set the TLS register. This was fixed in the upstream kernel for Linux 4.9. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-02-14linux-user: Fix openrisc cpu_loopRichard Henderson1-54/+41
We need to handle EXCP_DEBUG and EXCP_INTERRUPT. We need to send signals to the guest using queue_signal. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-02-14linux-user: Add MMAP_SHIFT for openriscRichard Henderson1-0/+2
The page size on openrisc is 8k. Sync the shift required for the mmap2 syscall. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-02-06linux-user: define correct UTS machine name for hppaLaurent Vivier1-1/+1
the correct UTS machine name (as expected by systemd) is "parisc", not "hppa". Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20170126080449.28255-4-laurent@vivier.eu> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-02-06linux-user: fix "apt-get update" on linux-user hppaLaurent Vivier1-1/+0
apt-get was hanging on linux-user hppa. strace has shown the netlink data stream was not correctly byte swapped. It appears the fd translator function is unregistered just after it has been registered, so the translator function is not called. This patch removes the fd_trans_unregister() after the do_socket() in the TARGET_NR_socket case. This fd_trans_unregister() was added by commit e36800c linux-user: add signalfd/signalfd4 syscalls when do_socket() was not registering any fd translator. And as now it is, we must remove this fd_trans_unregister() to keep them. Reported-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Message-Id: <20170126080449.28255-3-laurent@vivier.eu> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-02-01target/s390x: use "qemu" cpu model in user modeDavid Hildenbrand1-0/+2
"any" does not exist, therefore resulting in a misleading error message. Reported-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: David Hildenbrand <david@redhat.com> Message-Id: <20170130145025.26475-1-david@redhat.com> Reviewed-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Alexander Graf <agraf@suse.de> Cc: qemu-stable@nongnu.org
2017-01-27armv7m: Report no-coprocessor faults correctlyPeter Maydell1-0/+1
For v7M attempts to access a nonexistent coprocessor are reported differently from plain undefined instructions (as UsageFaults of type NOCP rather than type UNDEFINSTR). Split them out into a new EXCP_NOCP so we can report the FSR value correctly. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-id: 1485285380-10565-8-git-send-email-peter.maydell@linaro.org
2017-01-24nios2: Add usermode binaries emulationMarek Vasut10-7/+1146
Add missing bits for qemu-user required for emulating Altera Nios2 userspace binaries. Signed-off-by: Marek Vasut <marex@denx.de> Cc: Chris Wulff <crwulff@gmail.com> Cc: Jeff Da Silva <jdasilva@altera.com> Cc: Ley Foon Tan <lftan@altera.com> Cc: Sandra Loosemore <sandra@codesourcery.com> Cc: Yves Vandervennet <yvanderv@altera.com> Reviewed-by: Alexander Graf <agraf@suse.de> Message-Id: <20170118220146.489-4-marex@denx.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-23linux-user: Add HPPA startup and main loopRichard Henderson2-0/+196
Including support for the atomic memory op syscalls. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-23linux-user: Add HPPA signal handlingRichard Henderson1-1/+190
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-23linux-user: Add HPPA target_signal.h and target_cpu.hRichard Henderson2-0/+64
The cpu.h structure that these manipulate hasn't been defined yet, but we haven't enabled compilation yet either. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-23linux-user: Add HPPA target_structs.hRichard Henderson1-0/+54
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-23linux-user: Add HPPA definitions to syscall_defs.hRichard Henderson1-1/+130
2017-01-23linux-user: Add HPPA target_syscall.hRichard Henderson1-0/+237
Which is primarily a re-definition of errno numbers. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-23linux-user: Add HPPA termbits.hRichard Henderson1-0/+219
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-23linux-user: Add HPPA syscall numbersRichard Henderson1-0/+353
Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-23linux-user: Add HPPA socket.h definitionsRichard Henderson2-0/+99
Split this out into a "cpu/sockbits.h" file now, like we ought to do for all of the other targets. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-23linux-user: Add some hppa ioctlsHelge Deller1-0/+15
Add F_GETLK, F_SETLK, F_SETLKW, F_GETOWN, F_SETOWN, F_SETSIG, F_GETSIG, F_GETLK64, F_SETLK64 and F_SETLKW64 for hppa. Signed-off-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-22linux-user: Handle ERFKILL and EHWPOISONRichard Henderson5-0/+21
With definitions for generic, alpha and mips taken from 4.9-rc2. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-22linux-user: Add SIOCGPGRP, SIOCGSTAMP, SIOCGSTAMPNSHelge Deller3-0/+13
Mirror syscall_defs.h for the element type of struct timeval and struct timespec, even though that's not 100% accurate for each guest. Signed-off-by: Helge Deller <deller@gmx.de> [rth: Changed the MK_ARRAY types as per above; added ioctl.h entries.] Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-22linux-user: Handle TIOCSTART and TIOCSTOPHelge Deller2-0/+11
Some architectures (ppc, alpha, sparc, parisc, sh and xtensa) define the BSD TIOCSTART and TIOCSTOP ioctls in their kernel headers to provide compatibility to other operating systems. Those ioctls are not implemented in Linux, nevertheless, bash will use this ioctl if it's available on those architectures. To avoid false warnings, add code to simply ignore those ioctls. Signed-off-by: Helge Deller <deller@gmx.de> Message-Id: <20161206152403.GA6651@ls3530> Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-22linux-user: Support stack-grows-up in elfload.cRichard Henderson3-71/+180
HPPA is a (the) stack-grows-up target, and supporting that requires rearranging how we compute addresses while laying out the initial program stack. In addition, hppa32 requires 64-byte stack alignment so parameterize that as well. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-22Revert "Remove remainders of HPPA backend"Richard Henderson1-2/+2
This reverts commit d41f3c3cc7a5fb9de144cc4022da14a9ff010671. Signed-off-by: Richard Henderson <rth@twiddle.net>
2017-01-18target-sparc: use SparcV9MMU type for sparc64 I/D-MMUsArtyom Tarasenko1-1/+1
Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com>
2016-12-27target-m68k: add 680x0 divu/divs variantsLaurent Vivier1-0/+7
Update helper to set the throwing location in case of div-by-0. Cleanup divX.w and add quad word variants of divX.l. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <rth@twidle.net> [laurent: modified to clear Z on overflow, as found with risu]
2016-10-31linux-user/elfload: ensure mmap_lock() held while setting upAlex Bennée1-0/+4
Future patches will enforce the holding of mmap_lock() when we are manipulating internal memory structures. Technically it doesn't matter in the case of elfload as we haven't started executing yet. However it is easier to grab the lock when required than special case the translate-all API. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Message-Id: <20161027151030.20863-8-alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-31translate-all: add DEBUG_LOCKING assertsAlex Bennée1-0/+5
This adds asserts to check the locking on the various translation engines structures. There are two sets of structures that are protected by locks. The first the l1map and PageDesc structures used to track which translation blocks are associated with which physical addresses. In user-mode this is covered by the mmap_lock. The second case are TB context related structures which are protected by tb_lock which is also user-mode only. Currently the asserts do nothing in SoftMMU mode but this will change for MTTCG. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Message-Id: <20161027151030.20863-4-alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2016-10-26target-alpha: Emulate LL/SC using cmpxchg helpersRichard Henderson1-49/+0
Emulating LL/SC with cmpxchg is not correct, since it can suffer from the ABA problem. However, portable parallel code is written assuming only cmpxchg which means that in practice this is a viable alternative. Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-10-26linux-user: remove handling of aarch64's EXCP_STREXEmilio G. Cota1-125/+0
The exception is not emitted anymore. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <rth@twiddle.net> Message-Id: <1467054136-10430-30-git-send-email-cota@braap.org>
2016-10-26linux-user: remove handling of ARM's EXCP_STREXEmilio G. Cota1-93/+0
The exception is not emitted anymore. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Richard Henderson <rth@twidle.net> Message-Id: <1467054136-10430-29-git-send-email-cota@braap.org>
2016-10-26linux-user: enable parallel code generation on cloneAlex Bennée1-0/+8
The variable parallel_cpus controls the generation of thread aware atomic code. We only need to set it once we clone our first thread. At this point any existing translations need to be thrown away. Reviewed-by: Emilio G. Cota <cota@braap.org> Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-10-26tcg: Add EXCP_ATOMICRichard Henderson1-0/+45
When we cannot emulate an atomic operation within a parallel context, this exception allows us to stop the world and try again in a serial context. Reviewed-by: Emilio G. Cota <cota@braap.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <rth@twiddle.net>
2016-10-24target-arm: Implement new HLT trap for semihostingPeter Maydell1-0/+3
Version 2.0 of the semihosting specification introduces new trap instructions for AArch32: HLT 0xF000 for A32 and HLT 0x3C for T32. Implement these (in the same way we implement the existing HLT semihosting trap for A64). The old traps via SVC and BKPT are unaffected. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1476792973-18508-1-git-send-email-peter.maydell@linaro.org
2016-10-24Put the copyright information on a separate lineThomas Huth1-1/+1
The output string QEMU with "--version" is very long, it does not fit into a normal line of a terminal window anymore. By putting the copyright information on a separate line instead, the output looks much nicer. Signed-off-by: Thomas Huth <thuth@redhat.com> Message-Id: <1475661284-30153-1-git-send-email-thuth@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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