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2014-06-09target-arm: A64: Implement two-register SHA instructionsPeter Maydell
Implement the two-register SHA instruction group from the optional Crypto Extensions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401458125-27977-10-git-send-email-peter.maydell@linaro.org
2014-06-09target-arm: A64: Implement AES instructionsPeter Maydell
Implement the AES instructions from the optional Crypto Extensions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401458125-27977-8-git-send-email-peter.maydell@linaro.org
2014-06-09target-arm: A64: Implement CRC instructionsPeter Maydell
Implement the optional A64 CRC instructions. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401458125-27977-6-git-send-email-peter.maydell@linaro.org
2014-06-09target-arm: A64: Use PMULL feature bit for PMULLPeter Maydell
Now that we have a separate ARM_FEATURE_V8_PMULL bit, use it for the A64 PMULL, not the AES feature bit. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-09target-arm: add support for v8 VMULL.P64 instructionPeter Maydell
Add support for the VMULL.P64 polynomial 64x64 to 128 bit multiplication instruction in the A32/T32 instruction sets; this is part of the v8 Crypto Extensions. To do this we have to move the neon_pmull_64_{lo,hi} helpers from helper-a64.c into neon_helper.c so they can be used by the AArch32 translator. Inspired-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401386724-26529-4-git-send-email-peter.maydell@linaro.org
2014-06-09target-arm: add support for v8 SHA1 and SHA256 instructionsArd Biesheuvel
This adds support for the SHA1 and SHA256 instructions that are available on some v8 implementations of Aarch32. Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1401386724-26529-2-git-send-email-peter.maydell@linaro.org [PMM: * rebase * fix bad indent * add a missing UNDEF check for Q!=1 in the 3-reg SHA1/SHA256 case * use g_assert_not_reached() * don't re-extract bit 6 for the 2-reg-misc encodings * set the ELF HWCAP2 bits for the new features ] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-05Merge remote-tracking branch 'remotes/bonzini/softmmu-smap' into stagingPeter Maydell
* remotes/bonzini/softmmu-smap: (33 commits) target-i386: cleanup x86_cpu_get_phys_page_debug target-i386: fix protection bits in the TLB for SMEP target-i386: support long addresses for 4MB pages (PSE-36) target-i386: raise page fault for reserved bits in large pages target-i386: unify reserved bits and NX bit check target-i386: simplify pte/vaddr calculation target-i386: raise page fault for reserved physical address bits target-i386: test reserved PS bit on PML4Es target-i386: set correct error code for reserved bit access target-i386: introduce support for 1 GB pages target-i386: introduce do_check_protect label target-i386: tweak handling of PG_NX_MASK target-i386: commonize checks for PAE and non-PAE target-i386: commonize checks for 4MB and 4KB pages target-i386: commonize checks for 2MB and 4KB pages target-i386: fix coding standards in x86_cpu_handle_mmu_fault target-i386: simplify SMAP handling in MMU_KSMAP_IDX target-i386: fix kernel accesses with SMAP and CPL = 3 target-i386: move check_io helpers to seg_helper.c target-i386: rename KSMAP to KNOSMAP ... Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-06-05softmmu: introduce cpu_ldst.hPaolo Bonzini
This will collect all load and store helpers soon. For now it is just a replacement for softmmu_exec.h, which this patch stops including directly, but we also include it where this will be necessary in order to simplify the next patch. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-21target-i386: fix segment flags for SMM and VM86 modePaolo Bonzini
With the next patch, these need to be correct or VM86 tasks have the wrong CPL. The flags are basically what the Intel VMX documentation say is mandatory for entry into a VM86 guest. For consistency, SMM ought to have the same flags except with CPL=0. Tested-by: Kevin O'Connor <kevin@koconnor.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-13target-i386: the x86 CPL is stored in CS.selector - auto update hflags ↵Kevin O'Connor
accordingly. Instead of manually calling cpu_x86_set_cpl() when the CPL changes, check for CPL changes on calls to cpu_x86_load_seg_cache(R_CS). Every location that called cpu_x86_set_cpl() also called cpu_x86_load_seg_cache(R_CS), so cpu_x86_set_cpl() is no longer required. This fixes the SMM handler code as it was not setting/restoring the CPL level manually. Signed-off-by: Kevin O'Connor <kevin@koconnor.net> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2014-05-05linux-user: fix getrusage and wait4 failures with invalid rusage structPetar Jovanovic
Implementations of system calls getrusage and wait4 have not previously handled correctly cases when incorrect address of struct rusage is passed. This change makes sure return values are correctly set for these cases. Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user/elfload.c: Support ARM HWCAP2 flagsPeter Maydell
The ARM kernel has chosen to spill into the HWCAP2 ELF feature bit flags early, even though it hasn't yet exhausted all 32 bits of the HWCAP word. Add support for setting this in the same way we do for HWCAP. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user/elfload.c: Fix A64 code which was incorrectly acting like A32Peter Maydell
The ARM target-specific code in elfload.c was incorrectly allowing the 64-bit ARM target to use most of the existing 32-bit definitions: most noticably this meant that our HWCAP bits passed to the guest were wrong, and register handling when dumping core was totally broken. Fix this by properly separating the 64 and 32 bit code, since they have more differences than similarities. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Cc: qemu-stable@nongnu.org Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user/elfload.c: Update ARM HWCAP bitsPeter Maydell
The kernel has added support for a number of new ARM HWCAP bits; add them to QEMU, including support for setting them where we have a corresponding CPU feature bit. We were also incorrectly setting the VFPv3D16 HWCAP -- this means "only 16 D registers", not "supports 16-bit floating point format"; since QEMU always has 32 D registers for VFPv3, we can just remove the line that incorrectly set this bit. The kernel does not set the HWCAP_FPA even if it is providing FPA emulation via nwfpe, so don't set this bit in QEMU either. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Cc: qemu-stable@nongnu.org Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user/elfload.c: Fix incorrect ARM HWCAP bitsPeter Maydell
The ELF HWCAP bits for ARM features THUMBEE, NEON, VFPv3 and VFPv3D16 are all off by one compared to the kernel definitions. Fix this discrepancy and add in the missing CRUNCH bit which was the cause of the off-by-one error. (We don't emulate any of the CPUs which have that weird hardware, so it's otherwise uninteresting to us.) Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user: remove configure option for setting uname releaseRiku Voipio
--enable-uname-release was a rather heavyweight hammer, as it allows providing values less that UNAME_MINIMUM_RELEASE. Also, it affects all built linux-user targets, which in most cases is not what user wants. Now that we have UNAME_MINIMUM_RELEASE for all linux-user platforms, we can drop --enable-uname-release and the related CONFIG_UNAME_RELEASE define. Users can still override the variable with QEMU_UNAME=2.6.32 or -r command line option. If distributors need to update a minimum version for a specific target, it can be done by updating UNAME_MINIMUM_RELEASE. Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user: move uname functions to uname.cRiku Voipio
Make syscall.c slightly smaller by moving uname-related functions to uname.c. Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user: rename cpu-uname -> unameRiku Voipio
To move more uname related functions out of syscall.c, rename cpu-uname.{c,h} to uname.{c.h} Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user/signal.c: Set fault address in AArch64 signal infoPeter Maydell
Set the fault address correctly in the signal information passed to a signal handler for AArch64 guests. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user: avoid using glibc internals in _syscall5 and in definition of ↵Natanael Copa
target_sigevent struct Use the public sigset_t instead of the glibc specific internal __sigset_t in _syscall. Calculate the sigevent pad size is calculated in similar way as kernel does it instead of using glibc internal field _pad. This is needed for building with musl libc. Signed-off-by: Natanael Copa <ncopa@alpinelinux.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2014-05-02linux-user: Handle arches with llseek instead of _llseekJames Hogan
Recently merged kernel ports (such as OpenRISC and Meta) have an llseek system call instead of _llseek. This is handled for the host architecture by defining __NR__llseek as __NR_llseek, but not for the target architecture. Handle it in the same way for these architectures, defining TARGET_NR__llseek as TARGET_NR_llseek. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Riku Voipio <riku.voipio@iki.fi> Cc: Jia Liu <proljc@gmail.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user: Add support for SCM_CREDENTIALS.Huw Davies
Signed-off-by: Huw Davies <huw@codeweavers.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user: Move if-elses to a switch statement.Huw Davies
This makes adding more message types cleaner. Signed-off-by: Huw Davies <huw@codeweavers.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user: Assert stack used for auxvec, envp, argvJames Hogan
Assert that the amount of stack space used for auxvec, envp & argv exactly matches the amount allocated. This catches if DLINFO_ITEMS isn't updated when another NEW_AUX_ENT is added. Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Riku Voipio <riku.voipio@iki.fi> Cc: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-05-02linux-user: Add /proc/self/exe open forwardingMaxim Ostapenko
QEMU already supports /proc/self/{maps,stat,auxv} so addition of /proc/self/exe is rather trivial. Fixes https://bugs.launchpad.net/qemu/+bug/1299190 Signed-off-by: Maxim Ostapenko <m.ostapenko@partner.samsung.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-04-17target-arm: Define exception record for AArch64 exceptionsPeter Maydell
For AArch32 exceptions, the only information provided about the cause of an exception is the individual exception type (data abort, undef, etc), which we store in cs->exception_index. For AArch64, the CPU provides much more detail about the cause of the exception, which can be found in the syndrome register. Create a set of fields in CPUARMState which must be filled in whenever an exception is raised, so that exception entry can correctly fill in the syndrome register for the guest. This includes the information which in AArch32 appears in the DFAR and IFAR (fault address registers) and the DFSR and IFSR (fault status registers) for data aborts and prefetch aborts, since if we end up taking the MMU fault to AArch64 rather than AArch32 this will need to end up in different system registers. This patch does a refactoring which moves the setting of the AArch32 DFAR/DFSR/IFAR/IFSR from the point where the exception is raised to the point where it is taken. (This is no change for cores with an MMU, retains the existing clearly incorrect behaviour for ARM946 of trashing the MP access permissions registers which share the c5_data and c5_insn state fields, and has no effect for v7M because we don't implement its MPU fault status or address registers.) As a side effect of the cleanup we fix a bug in the AArch64 linux-user mode code where we were passing a 64 bit fault address through the 32 bit c6_data/c6_insn fields: it now goes via the always-64-bit exception.vaddress. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com>
2014-04-01linux-user: pass correct host flags to accept4()Petar Jovanovic
Flags NONBLOCK and CLOEXEC can have different values on the host and the guest, so set correct host values before calling accept4(). This fixes several issues with accept4 system call and user-mode of QEMU. Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-27linux-user: remove duplicate statementPrasad Joshi
Signed-off-by: Prasad Joshi <prasadjoshi.linux@gmail.com> Acked-by: Riku Voipio <riku.voipio@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2014-03-26linux-user: Correct DLINFO_ITEMSJames Hogan
Commit a07c67dfccb1 (Implement AT_CLKTCK.) back in March 2008 added a new auxvec entry but didn't increment DLINFO_ITEMS, so it's been out of sync ever since. Bump it up to 14 so that it matches the number of NEW_AUX_ENT's that need to be counted in create_elf_tables(). Signed-off-by: James Hogan <james.hogan@imgtec.com> Cc: Riku Voipio <riku.voipio@iki.fi> Cc: Paul Brook <paul@codesourcery.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-19linux-user: Fix build if headers don't define _LINUX_CAPABILITY_VERSION_1Peter Maydell
Older kernel headers don't define _LINUX_CAPABILITY_VERSION_1. Switch to using the older _LINUX_CAPABILITY_VERSION; newer headers still define this for source compatibility. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reported-by: Laurent Desnogues <laurent.desnogues@gmail.com> Reviewed-by: Laurent Desnogues <laurent.desnogues@gmail.com> Acked-by: Riku Voipio <riku.voipio@iki.fi>
2014-03-17linux-user: Implement capget, capsetPeter Maydell
Implement the capget and capset syscalls. This is useful because simple programs like 'ls' try to use it in AArch64, and otherwise we emit a lot of noise about it being unimplemented. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-17linux-user: Don't allow guest to block SIGSEGVPeter Maydell
Don't allow the linux-user guest to block SIGSEGV -- QEMU needs this signal to detect accesses to pages which it has marked read-only because it has cached translated code from them. We implement this by making the do_sigprocmask() wrapper suppress SIGSEGV when doing the host process signal mask manipulation; instead we store the current state of SIGSEGV in the TaskState struct. If we get a SIGSEGV for the guest when the guest has blocked the signal, we treat it as if the default SEGV handler was in place, as the kernel does for forced SIGSEGV delivery. This patch is based on an idea by Alex Barcelo, but rather than simply lying to the guest about the SIGSEGV state we track it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reported-by: Alex Barcelo <abarcelo@ac.upc.edu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-17signal: added a wrapper for sigprocmask functionAlex Barcelo
Create a wrapper for signal mask changes initiated by the guest; (this includes syscalls and also the sigreturns from signal.c) this will give us a place to put code which prevents the guest from changing the handling of signals used by QEMU itself internally. The wrapper is called from all the guest-initiated sigprocmask, but is not called from internal qemu sigprocmask calls. Signed-off-by: Alex Barcelo <abarcelo@ac.upc.edu> [PMM: Added calls to wrapper for sigprocmask uses in signal.c when setting the signal mask on entry and exit from signal handlers, since these also are guest-provided signal masks.] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-17linux-user: Don't reserve space for commpage for AArch64Peter Maydell
AArch64 Linux, unlike AArch32, doesn't use a commpage. This means we should not be reserving room in the guest address space for one. Fixes LP:1287195. Reported-by: Amanieu d'Antras <amanieu@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-17linux-user: implement F_[GS]ETOWN_EXAndreas Schwab
F_GETOWN is replaced by F_GETOWN_EX inside the glibc fcntl wrapper Signed-off-by: Andreas Schwab <schwab@suse.de> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-17linux-user: Don't return uninitialized value for atomic_barrier syscallPeter Maydell
QEMU's implementation of the m68k atomic_barrier syscall, like the kernel's, is just a no-op. However we still need to return a result code from it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-17linux-user/signal.c: Correct error path for AArch64 do_rt_sigreturnPeter Maydell
The error path in AArch64 do_rt_sigreturn() which fails before attempting lock_user_struct() was doing an unlock_user_struct() on an uninitialized variable. Initialize frame to NULL so we can use the same error-exit path in all cases (unlock of NULL is permitted and does nothing). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-13exec: Change cpu_abort() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13exec: Change cpu_breakpoint_{insert,remove{,_by_ref,_all}} argumentAndreas Färber
Use CPUState. Allows to clean up CPUArchState in gdbstub. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13exec: Change cpu_watchpoint_{insert,remove{,_by_ref,_all}} argumentAndreas Färber
Use CPUState. This lets us drop a few local env usages. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move breakpoints field from CPU_COMMON to CPUStateAndreas Färber
Most targets were using offsetof(CPUFooState, breakpoints) to determine how much of CPUFooState to clear on reset. Use the next field after CPU_COMMON instead, if any, or sizeof(CPUFooState) otherwise. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move watchpoint fields from CPU_COMMON to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move opaque field from CPU_COMMON to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move exception_index field from CPU_COMMON to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-10Merge remote-tracking branch 'remotes/riku/linux-user-for-upstream' into stagingPeter Maydell
* remotes/riku/linux-user-for-upstream: linux-user: set minimum kernel version to 2.6.32 linux-user: correct handling of break exception for MIPS linux-user: translate signal number on return from sigtimedwait linux-user: Implement sendmmsg syscall linux-user: Fix getresuid, getresgid if !USE_UID16 linux-user: Don't use UID16 on AArch64 linux-user: AArch64: Implement SA_RESTORER for signal handlers linux-user/signal.c: Fix AArch64 big-endian FP register restore Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-03-10linux-user: set minimum kernel version to 2.6.32Riku Voipio
Popular glibc based distributions[1] require minimum 2.6.32 as kernel version. For some targets 2.6.18 would be enough, but dropping so low would mean some suboptimal system calls could get used. Set the minimum kernel advertized to 2.6.32 for all architectures but aarch64 to ensure working qemu linux-user in case host kernel is older. [1] https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/921078 Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-05target-ppc: Add Store Quadword ConditionalTom Musta
This patch adds the Store Quadword Conditionl (stqcx.) instruction which is introduced in Power ISA 2.07. Signed-off-by: Tom Musta <tommusta@gmail.com> [agraf: fix compile error when !TARGET_PPC64] Signed-off-by: Alexander Graf <agraf@suse.de>
2014-03-03linux-user: correct handling of break exception for MIPSPetar Jovanovic
Exception with break instruction has not been correctly propagated as SIGTRAP. This resolves crash issues with examples that use break instruction on MIPS. Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-03linux-user: translate signal number on return from sigtimedwaitPetar Jovanovic
On success, sigtimedwait() returns a signal number that needs to be translated from a host value to a target value. This change also fixes issues with sigwait (that is implemented using sigtimedwait()). Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
2014-03-03linux-user: Implement sendmmsg syscallAlexander Graf
Glibc when built for newer kernels assumes that the sendmmsg syscall is available. Without it, dns resolution simply fails to work. Wrap the syscall with existing infrastructure so that we don't have a host dependency on sendmmsg. To avoid locking the same area of guest memory twice (which will break if DEBUG_REMAP is defined) we pull the lock/unlock part of do_sendrecvmsg() out into its own function so the actual implementation can be shared. Signed-off-by: Alexander Graf <agraf@suse.de> [PMM: add recvmmsg support; handle errors (which also implies support for non-blocking operations); cap the vector length as the kernel implementation does; don't lock guest memory twice; support MSG_WAITFORONE flag] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net>
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