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* log: do not use CONFIG_USER_ONLYPaolo Bonzini2016-05-191-0/+1
| | | | | | | This decouples logging further from config-target.h Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: arm: Handle (ignore) EXCP_YIELD in ARM cpu_loop()Peter Maydell2016-04-041-0/+6
| | | | | | | | | | | | | | | The new-in-ARMv8 YIELD instruction has been implemented to throw an EXCP_YIELD back up to the QEMU main loop. In system emulation we use this to decide to schedule a different guest CPU in SMP configurations. In usermode emulation there is nothing to do, so just ignore it and resume the guest. This prevents an abort with "unhandled CPU exception 0x10004" if the guest process uses the YIELD instruction. Reported-by: Hunter Laux <hunterlaux@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1456833171-31900-1-git-send-email-peter.maydell@linaro.org
* util: move declarations out of qemu-common.hVeronia Bahaa2016-03-224-1/+7
| | | | | | | | | | Move declarations out of qemu-common.h for functions declared in utils/ files: e.g. include/qemu/path.h for utils/path.c. Move inline functions out of qemu-common.h and into new files (e.g. include/qemu/bcd.h) Signed-off-by: Veronia Bahaa <veroniabahaa@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* osdep: add wrappers for socket functionsDaniel P. Berrange2016-03-101-1/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The windows socket functions look identical to the normal POSIX sockets functions, but instead of setting errno, the caller needs to call WSAGetLastError(). QEMU has tried to deal with this incompatibility by defining a socket_error() method that callers must use that abstracts the difference between WSAGetLastError() and errno. This approach is somewhat error prone though - many callers of the sockets functions are just using errno directly because it is easy to forget the need use a QEMU specific wrapper. It is not always immediately obvious that a particular function will in fact call into Windows sockets functions, so the dev may not even realize they need to use socket_error(). This introduces an alternative approach to portability inspired by the way GNULIB fixes portability problems. We use a macro to redefine the original socket function names to refer to a QEMU wrapper function. The wrapper function calls the original Win32 sockets method and then sets errno from the WSAGetLastError() value. Thus all code can simply call the normal POSIX sockets APIs are have standard errno reporting on error, even on Windows. This makes the socket_error() method obsolete. We also bring closesocket & ioctlsocket into this approach. Even though they are non-standard Win32 names, we can't wrap the normal close/ioctl methods since there's no reliable way to distinguish between a file descriptor and HANDLE in Win32. Signed-off-by: Daniel P. Berrange <berrange@redhat.com>
* linux-user: arm: handle CPSR.E correctly in strex emulationPaolo Bonzini2016-03-041-7/+43
| | | | | | | | | | | | | | | Now that CPSR.E is set correctly, prepare for when setend will be able to change it; bswap data in and out of strex manually by comparing SCTLR.B, CPSR.E and TARGET_WORDS_BIGENDIAN (we do not have the luxury of using TCGMemOps). Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [ PC changes: * Moved SCTLR/CPSR logic to arm_cpu_data_is_big_endian ] Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* linux-user: arm: set CPSR.E/SCTLR.E0E correctly for BE modePeter Crosthwaite2016-03-041-1/+2
| | | | | | | | | If doing big-endian linux-user mode, set both the CPSR.E and SCTLR.E0E bits. This sets big-endian mode for data accesses. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* target-arm: implement SCTLR.B, drop bswap_codePaolo Bonzini2016-03-041-3/+7
| | | | | | | | | | | | | | | | | | | | | bswap_code is a CPU property of sorts ("is the iside endianness the opposite way round to TARGET_WORDS_BIGENDIAN?") but it is not the actual CPU state involved here which is SCTLR.B (set for BE32 binaries, clear for BE8). Replace bswap_code with SCTLR.B, and pass that to arm_ld*_code. The next patches will make data fetches honor both SCTLR.B and CPSR.E appropriately. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> [PC changes: * rebased on master (Jan 2016) * s/TARGET_USER_ONLY/CONFIG_USER_ONLY * Use bswap_code() for disas_set_info() instead of raw sctlr_b ] Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* linux-user: arm: pass env to get_user_code_*Paolo Bonzini2016-03-041-11/+9Star
| | | | | | | | | | This matches the idiom used by get_user_data_* later in the series, and will help when bswap_code will be replaced by SCTLR.B. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* linux-user: arm: fix coding style for some linux-user signal functionsPaolo Bonzini2016-03-041-54/+56
| | | | | | | Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Peter Crosthwaite <crosthwaite.peter@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* linux-user: Use restrictive mask when calling cpsr_write()Peter Maydell2016-02-262-2/+3
| | | | | | | | | | When linux-user code is calling cpsr_write(), use a restrictive mask to ensure we are limiting the set of CPSR bits we update. In particular, don't allow the mode bits to be changed. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com> Message-id: 1455556977-3644-5-git-send-email-peter.maydell@linaro.org
* target-arm: Add write_type argument to cpsr_write()Peter Maydell2016-02-263-6/+6
| | | | | | | | | | Add an argument to cpsr_write() to indicate what kind of CPSR write is being requested, since the exact behaviour should differ for the different cases. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Sergey Fedorov <serge.fdrv@gmail.com> Message-id: 1455556977-3644-3-git-send-email-peter.maydell@linaro.org
* linux-user: add getrandom() syscallLaurent Vivier2016-02-241-0/+13
| | | | | | | | getrandom() has been introduced in kernel 3.17 and is now used during the boot sequence of Debian unstable (stretch/sid). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: correct timerfd_create syscall numbersRiku Voipio2016-02-236-6/+6
| | | | | | | | | | | | x86, m68k, ppc, sh4 and sparc failed to enable timerfd, because they didn't have timerfd_create system call defined. Instead QEMU defined timerfd syscall. Checking with kernel sources, it appears kernel developers reused timerfd syscall number with timerfd_create, presumably since no userspace called the old syscall number. Reported-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: remove unavailable syscalls from aarch64Riku Voipio2016-02-232-61/+0Star
| | | | | | | | | | QEMU lists deprecated system call numbers in for Aarch64. These are never enabled for Linux kernel, so don't define them in Qemu either. Remove the ifdef around host_to_target_stat64 since all architectures need it now. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: sync syscall numbers with kernelRiku Voipio2016-02-2313-17/+200
| | | | | | | Sync syscall numbers to match the linux v4.5-rc1 kernel. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: Don't assert if guest tries shmdt(0)Peter Maydell2016-02-231-5/+7
| | | | | | | | | | | | | | | | | Our implementation of shmat() and shmdt() for linux-user was using "zero guest address" as its marker for "entry in the shm_regions[] array is not in use". This meant that if the guest did a shmdt(0) we would match on an unused array entry and call page_set_flags() with both start and end addresses zero, which causes an assertion failure. Use an explicit in_use flag to manage the shm_regions[] array, so that we avoid this problem. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reported-by: Pavel Shamis <pasharesearch@gmail.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: set ppc64/ppc64le default CPU to POWER8Laurent Vivier2016-02-231-1/+1
| | | | | | | | | | | | | | | | Set the default to the latest CPU version to have the largest set of available features. It is also really needed in little-endian mode because POWER7 is not really supported in this mode and some distros (at least debian) generate POWER8 code for their ppc64le target. Fixes: https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=813698 Signed-off-by: Laurent Vivier <lvivier@redhat.com> Reviewed-by: Alexander Graf <agraf@suse.de> Reviewed-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* build: [linux-user] Rename "syscall.h" to "target_syscall.h" in target ↵Lluís Vilanova2016-02-2319-1/+67
| | | | | | | | | | | directories This fixes double-definitions in linux-user builds when using the UST tracing backend (which indirectly includes the system's "syscall.h"). Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: fix realloc size of target_fd_trans.Laurent Vivier2016-02-231-2/+2
| | | | | | | | | target_fd_trans is an array of "TargetFdTrans *": compute size accordingly. Use g_renew() as proposed by Paolo. Reported-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* all: Clean up includesPeter Maydell2016-02-232-6/+0Star
| | | | | | | | | | Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Eric Blake <eblake@redhat.com>
* log: do not unnecessarily include qom/cpu.hPaolo Bonzini2016-02-031-0/+1
| | | | | | | | | | Split the bits that require it to exec/log.h. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Denis V. Lunev <den@openvz.org> Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Message-id: 1452174932-28657-8-git-send-email-den@openvz.org Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
* linux-user: Clean up includesPeter Maydell2016-01-2920-74/+20Star
| | | | | | | | | | Clean up includes so that osdep.h is included first and headers which it implies are not included manually. This commit was created with scripts/clean-includes. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1453832250-766-10-git-send-email-peter.maydell@linaro.org
* Merge remote-tracking branch 'remotes/riku/tags/pull-linux-user-20160111' ↵Peter Maydell2016-01-115-51/+310
|\ | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | into staging January 2016 Linux-user queque # gpg: Signature made Mon 11 Jan 2016 14:13:57 GMT using RSA key ID DE3C9BC0 # gpg: Good signature from "Riku Voipio <riku.voipio@iki.fi>" # gpg: aka "Riku Voipio <riku.voipio@linaro.org>" * remotes/riku/tags/pull-linux-user-20160111: linux-user/mmap.c: Use end instead of real_end in target_mmap linux-user: Add SOCKOP_sendmmsg and SOCKOP_recvmmsg socket call, wire them up. linux-user: Update m68k syscall definitions to match Linux 4.4. linux-user/syscall.c: Use SOL_SOCKET instead of level for setsockopt() linux-user: enable sigaltstack for all architectures unicore32: convert get_sp_from_cpustate from macro to inline linux-user/mmap.c: Always zero MAP_ANONYMOUS memory in mmap_frag() linux-user,sh4: fix signal retcode address linux-user: check fd is >= 0 in fd_trans_host_to_target_data/fd_trans_host_to_target_addr linux-user: manage bind with a socket of SOCK_PACKET type. linux-user: add a function hook to translate sockaddr linux-user: rename TargetFdFunc to TargetFdDataFunc, and structure fields accordingly linux-user: SOCK_PACKET uses network endian to encode protocol in socket() linux-user/syscall.c: malloc()/calloc() to g_malloc()/g_try_malloc()/g_new0() linux-user: in poll(), if nfds is 0, pfd can be NULL linux-user: correctly align target_epoll_event linux-user: add signalfd/signalfd4 syscalls Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
| * linux-user/mmap.c: Use end instead of real_end in target_mmapChen Gang2016-01-111-1/+1
| | | | | | | | | | | | | | | | | | | | The fragment must effectively be mapped only to "end" not to "real_end" (which is a host page aligned address, and thus this is not a fragment). It is consistent with what it is done in the case of one single page. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: Add SOCKOP_sendmmsg and SOCKOP_recvmmsg socket call, wire them up.John Paul Adrian Glaubitz2016-01-112-2/+8
| | | | | | | | | | | | | | | | | | | | | | | | | | | | Adds the definitions for the socket calls SOCKOP_sendmmsg and SOCKOP_recvmmsg and wires them up with the rest of the code. The necessary function do_sendrecvmmsg() is already present in linux-user/syscall.c. After adding these two definitions and wiring them up, I no longer receive an error message about the unimplemented socket calls when running "apt-get update" on Debian unstable running on qemu with glibc_2.21 on m68k. Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: Update m68k syscall definitions to match Linux 4.4.John Paul Adrian Glaubitz2016-01-111-0/+27
| | | | | | | | | | | | Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user/syscall.c: Use SOL_SOCKET instead of level for setsockopt()Chen Gang2016-01-111-1/+2
| | | | | | | | | | | | | | | | | | In this case, level is TARGET_SOL_SOCKET, but we need SOL_SOCKET for setsockopt(). Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: enable sigaltstack for all architecturesMichael Tokarev2016-01-081-6/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | There is no reason to limit sigaltstack syscall to just a few architectures and pretend it is not implemented for others. If some architecture is not ready for this, that architecture should be fixed instead. This fixes LP#1516408. Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * unicore32: convert get_sp_from_cpustate from macro to inlineMichael Tokarev2016-01-081-1/+5
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | All other architectures define get_sp_from_cpustate as an inline function, only unicore32 uses a #define. With this, some usages are impossible, for example, enabling sigaltstack in linux-user/syscall.c results in linux-user/syscall.c: In function ‘do_syscall’: linux-user/syscall.c:8299:39: error: dereferencing ‘void *’ pointer [-Werror] get_sp_from_cpustate(arg1, arg2, get_sp_from_cpustate((CPUArchState *)cpu_env)); ^ linux-user/syscall.c:8299:39: error: request for member ‘regs’ in something not a structure or union Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user/mmap.c: Always zero MAP_ANONYMOUS memory in mmap_frag()Chen Gang2016-01-081-1/+3
| | | | | | | | | | | | | | | | | | When mapping MAP_ANONYMOUS memory fragments, still need notice about to set it zero, or it will cause issues. Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user,sh4: fix signal retcode addressLaurent Vivier2016-01-081-10/+6Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | To return from a signal, setup_frame() puts an instruction to be executed in the stack. This sequence calls the syscall sigreturn(). The address of the instruction must be set in the PR register to be executed. This patch fixes this: the current code sets the register to the address of the instruction in the host address space (which can be 64bit whereas PR is only 32bit), but the virtual CPU can't access this address space, so we put in PR the address of the instruction in the guest address space. This patch also removes an useless variable (ret) in the modified functions. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: check fd is >= 0 in ↵Laurent Vivier2016-01-081-2/+2
| | | | | | | | | | | | | | fd_trans_host_to_target_data/fd_trans_host_to_target_addr Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: manage bind with a socket of SOCK_PACKET type.Laurent Vivier2016-01-081-0/+30
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This is obsolete, but if we want to use dhcp with an old distro (like debian etch), we need it. Some users (like dhclient) use SOCK_PACKET with AF_PACKET and the kernel allows that. packet(7) In Linux 2.0, the only way to get a packet socket was by calling socket(AF_INET, SOCK_PACKET, protocol). This is still supported but strongly deprecated. The main difference between the two methods is that SOCK_PACKET uses the old struct sockaddr_pkt to specify an inter‐ face, which doesn't provide physical layer independence. struct sockaddr_pkt { unsigned short spkt_family; unsigned char spkt_device[14]; unsigned short spkt_protocol; }; spkt_family contains the device type, spkt_protocol is the IEEE 802.3 protocol type as defined in <sys/if_ether.h> and spkt_device is the device name as a null-terminated string, for example, eth0. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: add a function hook to translate sockaddrLaurent Vivier2016-01-081-6/+21
| | | | | | | | | | Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: rename TargetFdFunc to TargetFdDataFunc, and structure fields ↵Laurent Vivier2016-01-081-9/+9
| | | | | | | | | | | | | | | | accordingly Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: SOCK_PACKET uses network endian to encode protocol in socket()Laurent Vivier2016-01-081-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | in PACKET(7) : packet_socket = socket(AF_PACKET, int socket_type, int protocol); [...] protocol is the IEEE 802.3 protocol number in network order. See the <linux/if_ether.h> include file for a list of allowed protocols. When protocol is set to htons(ETH_P_ALL) then all protocols are received. All incoming packets of that protocol type will be passed to the packet socket before they are passed to the protocols implemented in the kernel. [...] Compatibility In Linux 2.0, the only way to get a packet socket was by calling socket(AF_INET, SOCK_PACKET, protocol). We need to tswap16() the protocol because on big-endian, the ABI is waiting for, for instance for ETH_P_ALL, 0x0003 (big endian == network order), whereas on little-endian it is waiting for 0x0300. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user/syscall.c: malloc()/calloc() to g_malloc()/g_try_malloc()/g_new0()Harmandeep Kaur2016-01-081-15/+15
| | | | | | | | | | | | | | | | | | | | | | Convert malloc()/ calloc() calls to g_malloc()/ g_try_malloc()/ g_new0() All heap memory allocation should go through glib so that we can take advantage of a single memory allocator and its debugging/tracing features. Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Signed-off-by: Harmandeep Kaur <write.harmandeep@gmail.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: in poll(), if nfds is 0, pfd can be NULLLaurent Vivier2016-01-081-7/+13
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This problem appears with yum in Fedora 20 / PPC64 container. test case: #include <stdio.h> #include <poll.h> int main(void) { int ret; ret = poll(NULL, 0, 1000); printf("%d\n", ret); } target test environment: Fedora 20 / PPC64 host test environment: Ubuntu 14.0.2 / x86_64 original test result: -1 13451 poll(0,0,1000,274886297496,268566664,268566648) = -1 errno=14 (Bad address) patched test result: 0 13536 poll(0,0,1000,274886297496,268566664,268566648) = 0 Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: correctly align target_epoll_eventLaurent Vivier2016-01-081-8/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | According to comments in /usr/include/linux/eventpoll.h, poll_event is packed only on x86_64. And to be sure fields are correctly aligned in epoll_data, use abi_XXX types for all of them. Moreover, fd type is wrong: fd is int, not ulong. This has been tested with a ppc guest on an x86_64 host: without this patch, systemd crashes (core). CC: Alexander Graf <agraf@suse.de> CC: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
| * linux-user: add signalfd/signalfd4 syscallsLaurent Vivier2016-01-081-0/+167
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | This patch introduces a system very similar to the one used in the kernel to attach specific functions to a given file descriptor. In this case, we attach a specific "host_to_target()" translator to the fd returned by signalfd() to be able to byte-swap the signalfd_siginfo structure provided by read(). This patch allows to execute the example program given by man signalfd(2): #include <sys/signalfd.h> #include <signal.h> #include <unistd.h> #include <stdlib.h> #include <stdio.h> #define handle_error(msg) \ do { perror(msg); exit(EXIT_FAILURE); } while (0) int main(int argc, char *argv[]) { sigset_t mask; int sfd; struct signalfd_siginfo fdsi; ssize_t s; sigemptyset(&mask); sigaddset(&mask, SIGINT); sigaddset(&mask, SIGQUIT); /* Block signals so that they aren't handled according to their default dispositions */ if (sigprocmask(SIG_BLOCK, &mask, NULL) == -1) handle_error("sigprocmask"); sfd = signalfd(-1, &mask, 0); if (sfd == -1) handle_error("signalfd"); for (;;) { s = read(sfd, &fdsi, sizeof(struct signalfd_siginfo)); if (s != sizeof(struct signalfd_siginfo)) handle_error("read"); if (fdsi.ssi_signo == SIGINT) { printf("Got SIGINT\n"); } else if (fdsi.ssi_signo == SIGQUIT) { printf("Got SIGQUIT\n"); exit(EXIT_SUCCESS); } else { printf("Read unexpected signal\n"); } } } $ ./signalfd_demo ^CGot SIGINT ^CGot SIGINT ^\Got SIGQUIT Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* | Add missing syscall nrs. according to more recent Linux kernelsJohan Ouwerkerk2016-01-113-0/+37
| | | | | | | | | | | | | | | | | | | | | | This change covers arm, aarch64, mips. Others to follow? The change was prompted by QEMU warning about a syscall 384 (get_random()) with Debian armhf binaries (ARMv7). Signed-off-by: Johan Ouwerkerk <jm.ouwerkerk@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* | linux-user: enable sigaltstack for all architecturesMichael Tokarev2016-01-111-6/+0Star
| | | | | | | | | | | | | | | | | | | | | | | | | | There is no reason to limit sigaltstack syscall to just a few architectures and pretend it is not implemented for others. If some architecture is not ready for this, that architecture should be fixed instead. This fixes LP#1516408. Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
* | unicore32: convert get_sp_from_cpustate from macro to inlineMichael Tokarev2016-01-101-1/+5
|/ | | | | | | | | | | | | | | All other architectures define get_sp_from_cpustate as an inline function, only unicore32 uses a #define. With this, some usages are impossible, for example, enabling sigaltstack in linux-user/syscall.c results in linux-user/syscall.c: In function ‘do_syscall’: linux-user/syscall.c:8299:39: error: dereferencing ‘void *’ pointer [-Werror] get_sp_from_cpustate(arg1, arg2, get_sp_from_cpustate((CPUArchState *)cpu_env)); ^ linux-user/syscall.c:8299:39: error: request for member ‘regs’ in something not a structure or union Signed-off-by: Michael Tokarev <mjt@tls.msk.ru> Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
* linux-user: convert DEBUG_SIGNAL logging to tracepointsPaolo Bonzini2015-12-171-60/+58Star
| | | | | | | "Unimplemented" messages go to stderr, everything else goes to tracepoints Reviewed-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: avoid "naked" qemu_logPaolo Bonzini2015-12-171-40/+31Star
| | | | | | | | Ensure that all log writes are protected by qemu_loglevel_mask or, in serious cases, go to both the log and stderr. Reviewed-by: Laurent Vivier <lvivier@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* user: introduce "-d page"Paolo Bonzini2015-12-172-6/+6
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* qemu-log: introduce qemu_log_separatePaolo Bonzini2015-12-171-2/+2
| | | | | | | | In some cases, the same message is printed both on stderr and in the log. Avoid duplicate output in the default case where stderr _is_ the log, and standardize this to stderr+log where it used to use stdio+log. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* translate-all: ensure host page mask is always extended with 1'sPaolo Bonzini2015-12-022-5/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | Anthony reported that >4GB guests on Xen with 32bit QEMU broke after commit 4ed023c ("Round up RAMBlock sizes to host page sizes", 2015-11-05). In that patch sizes are masked against qemu_host_page_size/mask which are uintptr_t, and thus 32bit on a 32bit QEMU, even though the ram space might be bigger than 4GB on Xen. Since ram_addr_t is not available on user-mode emulation targets, ensure that we get a sign extension when masking away the low bits of the address. Remove the ~10 year old scary comment that the type of these variables is probably wrong, with another equally scary comment. The new comment however does not have "???" in it, which is arguably an improvement. For completeness use the alignment macros in linux-user and bsd-user instead of manually doing an &. linux-user and bsd-user are not affected by the Xen issue, however. Reviewed-by: Juan Quintela <quintela@redhat.com> Reported-by: Anthony PERARD <anthony.perard@citrix.com> Fixes: 4ed023ce2a39ab5812d33cf4d819def168965a7f Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user/syscall: Replace g_malloc0 + memcpy with g_memdupThomas Huth2015-11-061-2/+1Star
| | | | | | | | | | | No need to use g_malloc0 to zero the memory if we memcpy to the whole buffer afterwards anyway. Actually, there is even a function which combines both steps, g_memdup, so let's use this function here instead. Signed-off-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
* linux-user: Remove type casts to union typeStefan Weil2015-10-081-4/+4
| | | | | | | | | | | | | Casting to a union type is a gcc (and clang) extension. Other compilers might not support it. This is not a problem today, but the type casts can be removed easily. Smatch now no longer complains like before: linux-user/syscall.c:3190:18: warning: cast to non-scalar linux-user/syscall.c:7348:44: warning: cast to non-scalar Cc: Riku Voipio <riku.voipio@iki.fi> Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
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