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* linux-user: Add guest memory layout to exception dumpHelge Deller2022-10-251-4/+2Star
| | | | | | | | | | | | | | | | | | | | | | | | | When the emulation stops with a hard exception it's very useful for debugging purposes to dump the current guest memory layout (for an example see /proc/self/maps) beside the CPU registers. The open_self_maps() function provides such a memory dump, but since it's located in the syscall.c file, various changes (add #includes, make this function externally visible, ...) are needed to be able to call it from the existing EXCP_DUMP() macro. This patch takes another approach by re-defining EXCP_DUMP() to call target_exception_dump(), which is in syscall.c, consolidates the log print functions and allows to add the call to dump the memory layout. Beside a reduced code footprint, this approach keeps the changes across the various callers minimal, and keeps EXCP_DUMP() highlighted as important macro/function. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <Y1bzAWbw07WBKPxw@p100> [lv: remove pc declaration and setting] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: i386/signal: support XSAVE/XRSTOR for signal frame fpstatePaolo Bonzini2022-10-111-19/+100
| | | | | | | | | Add support for saving/restoring extended save states when signals are delivered. This allows using AVX, MPX or PKRU registers in signal handlers. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: i386/signal: support FXSAVE fpstate on 32-bit emulationPaolo Bonzini2022-10-111-51/+76
| | | | | | | | | | | Linux can use FXSAVE to save/restore XMM registers even on 32-bit systems. This requires some care in order to keep the FXSAVE area aligned to 16 bytes; for this reason, get_sigframe is changed to pass the offset into the FXSAVE area rather than the full frame size. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: i386/signal: move fpstate at the end of the 32-bit framesPaolo Bonzini2022-10-111-2/+9
| | | | | | | | | Recent versions of Linux moved the 32-bit fpstate towards the end of the frame, so that the variable-sized xsave data does not overwrite the (ABI-defined) extramask[] field. Follow suit in QEMU. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: Provide MADV_* definitionsIlya Leoshkevich2022-09-271-0/+1
| | | | | | | | | | | Provide MADV_* definitions using target_mman.h header, similar to what kernel does. Most architectures use the same values, with the exception of alpha and hppa. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220906000839.1672934-2-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: use 'max' instead of 'qemu32' / 'qemu64' by defaultDaniel P. Berrangé2022-09-231-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | The 'qemu64' CPU model implements the least featureful x86_64 CPU that's possible. Historically this hasn't been an issue since it was rare for OS distros to build with a higher mandatory CPU baseline. With RHEL-9, however, the entire distro is built for the x86_64-v2 ABI baseline: https://developers.redhat.com/blog/2021/01/05/building-red-hat-enterprise-linux-9-for-the-x86-64-v2-microarchitecture-level It is likely that other distros may take similar steps in the not too distant future. For example, it has been suggested for Fedora on a number of occasions. This new baseline is not compatible with the qemu64 CPU model though. While it is possible to pass a '-cpu xxx' flag to qemu-x86_64, the usage of QEMU doesn't always allow for this. For example, the args are typically controlled via binfmt rules that the user has no ability to change. This impacts users who are trying to use podman on aarch64 platforms, to run containers with x86_64 content. There's no arg to podman that can be used to change the qemu-x86_64 args, and a non-root user of podman can not change binfmt rules without elevating privileges: https://github.com/containers/podman/issues/15456#issuecomment-1228210973 Changing to the 'max' CPU model gives 'qemu-x86_64' maximum compatibility with binaries it is likely to encounter in the wild, and not likely to have a significant downside for existing usage. Most other architectures already use an 'any' CPU model, which is often mapped to 'max' (or similar) already, rather than the oldest possible CPU model. For the sake of consistency the 'i386' architecture is also changed from using 'qemu32' to 'max'. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20220923110413.70593-1-berrange@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* misc: fix commonly doubled up wordsDaniel P. Berrangé2022-08-011-1/+1
| | | | | | | Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Message-Id: <20220707163720.1421716-5-berrange@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
* Remove qemu-common.h include from most unitsMarc-André Lureau2022-04-061-1/+0Star
| | | | | | Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Message-Id: <20220323155743.1585078-33-marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: Add missing "qemu/timer.h" includePhilippe Mathieu-Daudé2022-02-211-0/+1
| | | | | | | | | | "qemu/timer.h" declares cpu_get_host_ticks(). Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Thomas Huth <thuth@redhat.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220207082756.82600-9-f4bug@amsat.org> Signed-off-by: Thomas Huth <thuth@redhat.com>
* linux-user: Move generic TARGET_RLIMIT* definitions to generic/target_resource.hSerge Belyshev2022-02-011-0/+1
| | | | | | Signed-off-by: Serge Belyshev <belyshev@depni.sinp.msu.ru> Message-Id: <87ee4ql3yk.fsf_-_@depni.sinp.msu.ru> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Move target_struct.h generic definitions to generic/Richard Henderson2022-01-111-58/+1Star
| | | | | | | | | | Most targets share the same generic ipc structure definitions. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220107042600.149852-3-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/i386: Use force_sig, force_sig_faultRichard Henderson2022-01-111-29/+18Star
| | | | | | | | | | Replace the local gen_signal with the generic functions that match how the kernel raises signals. Fill in the missing PC for SIGTRAP. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220107213243.212806-11-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/i386: Split out maybe_handle_vm86_trapRichard Henderson2022-01-111-16/+15Star
| | | | | | | | | Reduce the number of ifdefs within cpu_loop(). Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220107213243.212806-10-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Split out do_prctl and subroutinesRichard Henderson2022-01-061-0/+1
| | | | | | | | | | | | | | | | Since the prctl constants are supposed to be generic, supply any that are not provided by the host. Split out subroutines for PR_GET_FP_MODE, PR_SET_FP_MODE, PR_GET_VL, PR_SET_VL, PR_RESET_KEYS, PR_SET_TAGGED_ADDR_CTRL, PR_GET_TAGGED_ADDR_CTRL. Return EINVAL for guests that do not support these options rather than pass them on to the host. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20211227150127.2659293-2-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: target_syscall.h remove definition TARGET_MINSIGSTKSZSong Gao2022-01-061-1/+0Star
| | | | | | | | | | | | TARGET_MINSIGSTKSZ has been defined in generic/signal.h or target_signal.h, We don't need to define it again. Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <1637893388-10282-3-git-send-email-gaosong@loongson.cn> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Move target_signal.h generic definitions to generic/signal.hSong Gao2022-01-061-18/+0Star
| | | | | | | | | | | No code change Suggested-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <1637893388-10282-2-git-send-email-gaosong@loongson.cn> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Rename TARGET_QEMU_ESIGRETURN to QEMU_ESIGRETURNRichard Henderson2021-12-202-7/+7
| | | | | | | | This value is fully internal to qemu, and so is not a TARGET define. Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Rename TARGET_ERESTARTSYS to QEMU_ERESTARTSYSRichard Henderson2021-12-201-3/+3
| | | | | | | | | This value is fully internal to qemu, and so is not a TARGET define. We use this as an extra marker for both host and target errno. Reviewed-by: Warner Losh <imp@bsdimp.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user/x86_64: Raise SIGSEGV if SA_RESTORER not setRichard Henderson2021-10-011-6/+5Star
| | | | | | | | | | This has been a fixme for some time. The effect of returning -EFAULT from the kernel code is to raise SIGSEGV. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210929130553.121567-12-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/i386: Implement setup_sigtrampRichard Henderson2021-10-012-18/+40
| | | | | | | | | | | Create and record the two signal trampolines. Use them when the guest does not use SA_RESTORER. Note that x86_64 does not use this code. Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210929130553.121567-11-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Split linux-user internals out of qemu.hPeter Maydell2021-09-132-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | qemu.h is included in various non-linux-user files (which mostly want the TaskState struct and the functions for doing usermode access to guest addresses like lock_user(), unlock_user(), get_user*(), etc). Split out the parts that are only used in linux-user itself into a new user-internals.h. This leaves qemu.h with basically three things: * the definition of the TaskState struct * the user-access functions and macros * do_brk() all of which are needed by code outside linux-user that includes qemu.h. The addition of all the extra #include lines was done with sed -i '/include.*qemu\.h/a #include "user-internals.h"' $(git grep -l 'include.*qemu\.h' linux-user) (and then undoing the change to fpa11.h). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210908154405.15417-8-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Split mmap prototypes into user-mmap.hPeter Maydell2021-09-131-0/+1
| | | | | | | | | | | Split out the mmap prototypes into a new header user-mmap.h which we only include where required. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210908154405.15417-6-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Split signal-related prototypes into signal-common.hPeter Maydell2021-09-131-0/+1
| | | | | | | | | | | Split the signal related prototypes into the existing header file signal-common.h, and include it in those places that now require it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210908154405.15417-4-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: fix guest/host address mixup in i386 setup_rt_frame()Ilya Leoshkevich2021-08-051-4/+4
| | | | | | | | | | setup_rt_frame() passes siginfo and ucontext host addresses to guest signal handlers, causing problems when e.g. emulating x86_64 on s390x. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210803171858.148394-1-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: update syscall.tbl to Linux v5.13Laurent Vivier2021-07-131-7/+14
| | | | | | | | Updated running scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20210708215756.268805-4-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Extract target errno to 'target_errno_defs.h'Philippe Mathieu-Daudé2021-07-121-0/+7
| | | | | | | | | | | | | | | We want to access the target errno indepently of the rest of the linux-user code. Move the header containing the generic errno definitions ('errno_defs.h') to 'generic/target_errno_defs.h', create a new 'target_errno_defs.h' in each target which itself includes 'generic/target_errno_defs.h'. Suggested-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20210708170550.1846343-4-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Pass CPUArchState to target_restore_altstackRichard Henderson2021-05-151-1/+1
| | | | | | | | | | | | | In most cases we were already passing get_sp_from_cpustate directly to the function. In other cases, we were passing a local variable which already contained the same value. In the rest of the cases, we were passing the stack pointer out of env directly. Reviewed by: Warner Losh <imp@bsdimp.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210426025334.1168495-5-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Use target_restore_altstack in all sigreturnRichard Henderson2021-05-151-4/+1Star
| | | | | | | | | | | | Note that target_restore_altstack uses the host memory pointer that we have already verified, so TARGET_EFAULT is not a possible return value. Note that using -EFAULT was a bug. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210426025334.1168495-3-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Use cpu_untagged_addr in access_ok; split out *_untaggedRichard Henderson2021-02-162-3/+4
| | | | | | | | | | | Provide both tagged and untagged versions of access_ok. In a few places use thread_cpu, as the user is several callees removed from do_syscall1. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210212184902.1251044-17-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* exec: Use cpu_untagged_addr in g2h; split out g2h_untaggedRichard Henderson2021-02-161-2/+2
| | | | | | | | | | | | | | | | | | | | | | | Use g2h_untagged in contexts that have no cpu, e.g. the binary loaders that operate before the primary cpu is created. As a colollary, target_mmap and friends must use untagged addresses, since they are used by the loaders. Use g2h_untagged on values returned from target_mmap, as the kernel never applies a tag itself. Use g2h_untagged on all pc values. The only current user of tags, aarch64, removes tags from code addresses upon branch, so "pc" is always untagged. Use g2h with the cpu context on hand wherever possible. Use g2h_untagged in lock_user, which will be updated soon. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210212184902.1251044-13-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
* linux user: Fix Lesser GPL version numberChetan Pant2020-11-152-2/+2
| | | | | | | | | | | | There is no "version 2" of the "Lesser" General Public License. It is either "GPL version 2.0" or "Lesser GPL version 2.1". This patch replaces all occurrences of "Lesser GPL version 2" with "Lesser GPL version 2.1" in comment section. Signed-off-by: Chetan Pant <chetan4windows@gmail.com> Message-Id: <20201023122455.19417-1-chetan4windows@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
* linux-user: Correct definition of stack_tLemonBoy2020-11-111-3/+3
| | | | | | | | | | | | | | | | | | | | | | | Some platforms used the wrong definition of stack_t where the flags and size fields were swapped or where the flags field had type ulong instead of int. Due to the presence of padding space in the structure and the prevalence of little-endian machines this problem went unnoticed for a long time. The type definitions have been cross-checked with the ones defined in the Linux kernel v5.9, plus some older versions for a few architecture that have been removed and Xilinx's kernel fork for NiosII [1]. The bsd-user headers remain unchanged as I don't know if they are wrong or not. [1] https://github.com/Xilinx/linux-xlnx/blob/master/arch/nios2/include/uapi/asm/signal.h Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <e9d47692-ee92-009f-6007-0abc3f502b97@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: update syscall.tbl to Linux 5.9-rc7Laurent Vivier2020-10-261-409/+411
| | | | | | | | | Updated running scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200930003033.554124-4-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add generic 'termbits.h' for some archsFilip Bozuta2020-08-271-232/+1Star
| | | | | | | | | | | | | | | | | | | | | This patch introduces a generic 'termbits.h' file for following archs: 'aarch64', 'arm', 'i386, 'm68k', 'microblaze', 'nios2', 'openrisc', 'riscv', 's390x', 'x86_64'. Since all of these archs have the same termios flag values and same ioctl_tty numbers, there is no need for a separate 'termbits.h' file for each one of them. For that reason one generic 'termbits.h' file was added for all of them and an '#include' directive was added for this generic file in every arch 'termbits.h' file. Also, some of the flag values that were missing were added in this generic file so that it matches the generic 'termibts.h' and 'ioctls.h' files from the kernel: 'asm-generic/termbits.h' and 'asm-generic/ioctls.h'. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200723210233.349690-2-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Add strace support for printing arguments of syscalls used to ↵Filip Bozuta2020-08-271-2/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | lock and unlock memory This patch implements strace argument printing functionality for following syscalls: * mlock, munlock, mlockall, munlockall - lock and unlock memory int mlock(const void *addr, size_t len) int munlock(const void *addr, size_t len) int mlockall(int flags) int munlockall(void) man page: https://man7.org/linux/man-pages/man2/mlock.2.html Implementation notes: Syscall mlockall() takes an argument that is composed of predefined values which represent flags that determine the type of locking operation that is to be performed. For that reason, a printing function "print_mlockall" was stated in file "strace.list". This printing function uses an already existing function "print_flags()" to print the "flags" argument. These flags are stated inside an array "mlockall_flags" that contains values of type "struct flags". These values are instantiated using an existing macro "FLAG_TARGET()" that crates aproppriate target flag values based on those defined in files '/target_syscall.h'. These target flag values were changed from "TARGET_MLOCKALL_MCL*" to "TARGET_MCL_*" so that they can be aproppriately set and recognised in "strace.c" with "FLAG_TARGET()". Value for "MCL_ONFAULT" was added in this patch. This value was also added in "syscall.c" in function "target_to_host_mlockall_arg()". Because this flag value was added in kernel version 4.4, it is enwrapped in an #ifdef directive (both in "syscall.c" and in "strace.c") as to support older kernel versions. The other syscalls have only primitive argument types, so the rest of the implementation was handled by stating an appropriate printing format in file "strace.list". Syscall mlock2() is not implemented in "syscall.c" and thus it's argument printing is not implemented in this patch. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200811164553.27713-4-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* meson: linux-userMarc-André Lureau2020-08-213-5/+6
| | | | | | | | | | | | | | The most interesting or most complicated part here is the syscall_nr.h generators. In order to keep the generation logic all in meson.build, I am adding to config_target the name of the .tbl file, and making the generated file syscall<SUFFIX>_nr.h for input file syscall<SUFFIX>.tbl. For architectures where the input file is not named syscall_nr.tbl, syscall_nr.h has to be a source file; it's just a forwarder for x86 (i386/x86_64), while for MIPS64 it chooses between N32 and N64 ABIs. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user/i386: Emulate x86_64 vsyscallsRichard Henderson2020-03-261-0/+108
| | | | | | | | | | | Notice the magic page during translate, much like we already do for the arm32 commpage. At runtime, raise an exception to return cpu_loop for emulation. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200213032223.14643-4-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/i386: Split out gen_signalRichard Henderson2020-03-261-60/+33Star
| | | | | | | | | | | | | | This is a bit tidier than open-coding the 5 lines necessary to initialize the target_siginfo_t. In addition, this zeros the remaining bytes of the target_siginfo_t, rather than passing in garbage. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200213032223.14643-3-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: update syscall.tbl from linux 0bf999f9c5e7Laurent Vivier2020-03-201-0/+2
| | | | | | | | | Run scripts/update-syscalltbl.sh with linux commit 0bf999f9c5e7 Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <20200310103403.3284090-20-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user, i386: add syscall table generation supportLaurent Vivier2020-03-204-387/+475
| | | | | | | | | | Copy syscall_32.tbl and syscallhdr.sh from linux/arch/x86/kernel/syscalls v5.5 Update syscallhdr.sh to generate QEMU syscall_nr.h Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <20200310103403.3284090-15-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user, x86_64, i386: cleanup TARGET_NR_arch_prctlLaurent Vivier2020-03-201-2/+2
| | | | | | | | | | Define do_arch_prctl() for i386 and x86_64, but return -TARGET_ENOSYS for i386. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <20200310103403.3284090-14-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Introduce cpu_clone_regs_parentRichard Henderson2019-11-061-0/+4
| | | | | | | | | | | | 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>
* linux-user: Rename cpu_clone_regs to cpu_clone_regs_childRichard Henderson2019-11-061-1/+2
| | | | | | | | | | | | | | | 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>
* Supply missing header guardsMarkus Armbruster2019-06-122-0/+10
| | | | | Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190604181618.19980-5-armbru@redhat.com>
* Include qemu-common.h exactly where neededMarkus Armbruster2019-06-121-0/+1
| | | | | | | | | | | | | | | | No header includes qemu-common.h after this commit, as prescribed by qemu-common.h's file comment. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-5-armbru@redhat.com> [Rebased with conflicts resolved automatically, except for include/hw/arm/xlnx-zynqmp.h hw/arm/nrf51_soc.c hw/arm/msf2-soc.c block/qcow2-refcount.c block/qcow2-cluster.c block/qcow2-cache.c target/arm/cpu.h target/lm32/cpu.h target/m68k/cpu.h target/mips/cpu.h target/moxie/cpu.h target/nios2/cpu.h target/openrisc/cpu.h target/riscv/cpu.h target/tilegx/cpu.h target/tricore/cpu.h target/unicore32/cpu.h target/xtensa/cpu.h; bsd-user/main.c and net/tap-bsd.c fixed up]
* target/i386: Use env_cpu, env_archcpuRichard Henderson2019-06-102-2/+2
| | | | | | | | | | | Cleanup in the boilerplate that each target must define. Replace x86_env_get_cpu with env_archcpu. The combination CPU(x86_env_get_cpu) should have used ENV_GET_CPU to begin; use env_cpu now. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
* linux-user: Don't call gdb_handlesig() before queue_signal()Peter Maydell2018-11-121-12/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | The CPU main-loop routines for linux-user generally call gdb_handlesig() when they're about to queue a SIGTRAP signal. This is wrong, because queue_signal() will cause us to pend a signal, and process_pending_signals() will then call gdb_handlesig() itself. So the effect is that we notify gdb of the SIGTRAP, and then if gdb says "OK, continue with signal X" we will incorrectly notify gdb of the signal X as well. We don't do this double-notify for anything else, only SIGTRAP. Remove this unnecessary and incorrect code from all the targets except for nios2 (whose main loop is doing something different and broken, and will be handled in a separate patch). This bug only manifests if the user responds to the reported SIGTRAP using "signal SIGFOO" rather than "continue"; since the latter is the overwhelmingly common thing to do after a breakpoint most people won't have hit this. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20181019174958.26616-2-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: move generic signal definitions to generic/signal.hLaurent Vivier2018-06-041-0/+2
| | | | | | | No code change. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180529194207.31503-10-laurent@vivier.eu>
* linux-user: move get_sp_from_cpustate() to target_cpu.hLaurent Vivier2018-06-043-8/+4Star
| | | | | | | | | Remove useless includes Fix HPPA include guard. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Acked-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180529194207.31503-9-laurent@vivier.eu>
* linux-user: move generic fcntl definitions to generic/fcntl.hLaurent Vivier2018-06-041-0/+11
| | | | | | | | | add a per target target_fcntl.h and include the generic one from them No code change. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180529194207.31503-2-laurent@vivier.eu>
generated by cgit v1.2.3-55-g7522 (git 2.39.0) at 2024-11-06 16:42:04 +0100