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2022-09-27linux-user: Fix TARGET_PROT_SEM for XTENSAHelge Deller
The xtensa platform has a value of 0x10 for PROT_SEM. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220924114501.21767-2-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user: Passthrough MADV_DONTNEED for certain file mappingsIlya Leoshkevich
This is a follow-up for commit 892a4f6a750a ("linux-user: Add partial support for MADV_DONTNEED"), which added passthrough for anonymous mappings. File mappings can be handled in a similar manner. In order to do that, mark pages, for which mmap() was passed through, with PAGE_PASSTHROUGH, and then allow madvise() passthrough for these pages. Drop the explicit PAGE_ANON check, since anonymous mappings are expected to have PAGE_PASSTHROUGH anyway. Add PAGE_PASSTHROUGH to PAGE_STICKY in order to keep it on mprotect(). Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220725125043.43048-1-iii@linux.ibm.com> Message-Id: <20220906000839.1672934-5-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user: Implement stracing madvise()Ilya Leoshkevich
The default implementation has several problems: the first argument is not displayed as a pointer, making it harder to grep; the third argument is not symbolized; and there are several extra unused arguments. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220906000839.1672934-4-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user: Fix madvise(MADV_DONTNEED) on alphaIlya Leoshkevich
MADV_DONTNEED has a different value on alpha, compared to all the other architectures. Fix by using TARGET_MADV_DONTNEED instead of MADV_DONTNEED. Fixes: 892a4f6a750a ("linux-user: Add partial support for MADV_DONTNEED") Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220906000839.1672934-3-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user: Provide MADV_* definitionsIlya Leoshkevich
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>
2022-09-27linux-user: Show timespec on strace for futex()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-11-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user: Add strace for clock_nanosleep()Helge Deller
Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-10-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user/hppa: Set TASK_UNMAPPED_BASE to 0xfa000000 for hppa archHelge Deller
On the parisc architecture the stack grows upwards. Move the TASK_UNMAPPED_BASE to high memory area as it's done by the kernel on physical machines. Signed-off-by: Helge Deller <deller@gmx.de> Message-Id: <20220918194555.83535-9-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user: Fix strace of chmod() if mode == 0Helge Deller
If the mode parameter of chmod() is zero, this value isn't shown when stracing a program: chmod("filename",) This patch fixes it up to show the zero-value as well: chmod("filename",000) Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220918194555.83535-8-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user/hppa: Use EXCP_DUMP() to show enhanced debug infoHelge Deller
Enhance the hppa linux-user cpu_loop() to show more debugging info on hard errors. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-6-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user: Log failing executable in EXCP_DUMP()Helge Deller
Enhance the EXCP_DUMP() macro to print out the failing program too. During debugging it's sometimes hard to track down the actual failing program if you are e.g. building a whole debian package. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220918194555.83535-5-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user: Add pidfd_open(), pidfd_send_signal() and pidfd_getfd() syscallsHelge Deller
I noticed those were missing when running the glib2.0 testsuite. Add the syscalls including the strace output. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-4-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user: Add missing clock_gettime64() syscall straceHelge Deller
Allow linux-user to strace the clock_gettime64() syscall. This syscall is used a lot on 32-bit guest architectures which use newer glibc versions. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-3-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-27linux-user: Add missing signals in strace outputHelge Deller
Some of the guest signal numbers are currently not converted to their representative names in the strace output, e.g. SIGVTALRM. This patch introduces a smart way to generate and keep in sync the host-to-guest and guest-to-host signal conversion tables for usage in the qemu signal and strace code. This ensures that any signals will now show up in both tables. There is no functional change in this patch - with the exception that yet missing signal names now show up in the strace code too. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220918194555.83535-2-deller@gmx.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-23linux-user: fix readlinkat handling with magic exe symlinkJameson Nash
Exactly the same as f17f4989fa193fa8279474c5462289a3cfe69aea before was for readlink. I suppose this was simply missed at the time. Signed-off-by: Jameson Nash <vtjnash@gmail.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220808190727.875155-1-vtjnash@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-09-23linux-user/host/s390: Add vector instructions to host_signal_write()Ilya Leoshkevich
The new noexec test fails on s390x with "unexpected SEGV". This test overwrites code using libc's memcpy(), which uses VSTL instruction. host_signal_write() does not recognize it, which causes SEGV to be incorrectly forwarded to the test. Add all vector instructions that write to memory to host_signal_write(). Fixes: ab12c95d3f19 ("target/s390x: Make translator stop before the end of a page") Reported-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20220920113907.334144-1-iii@linux.ibm.com> Tested-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2022-09-23linux-user: use 'max' instead of 'qemu32' / 'qemu64' by defaultDaniel P. Berrangé
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>
2022-09-06linux-user: Clear translations on mprotect()Ilya Leoshkevich
Currently it's possible to execute pages that do not have PAGE_EXEC if there is an existing translation block. Fix by invalidating TBs that touch the affected pages. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Message-Id: <20220817150506.592862-2-iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06linux-user: Honor PT_GNU_STACKRichard Henderson
Map the stack executable if required by default or on demand. Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06linux-user/x86_64: Allocate vsyscall page as a commpageRichard Henderson
We're about to start validating PAGE_EXEC, which means that we've got to mark the vsyscall page executable. We had been special casing this entirely within translate. Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06linux-user/hppa: Allocate page zero as a commpageRichard Henderson
We're about to start validating PAGE_EXEC, which means that we've got to mark page zero executable. We had been special casing this entirely within translate. Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-09-06linux-user/arm: Mark the commpage executableRichard Henderson
We're about to start validating PAGE_EXEC, which means that we've got to mark the commpage executable. We had been placing the commpage outside of reserved_va, which was incorrect and lead to an abort. Acked-by: Ilya Leoshkevich <iii@linux.ibm.com> Tested-by: Ilya Leoshkevich <iii@linux.ibm.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-08-18Revert "linux-user: un-parent OBJECT(cpu) when closing thread"Richard Henderson
This reverts commit 52f0c1607671293afcdb2acc2f83e9bccbfa74bb. This caused a regression in arm/aarch64. We are hard-coding ARMCPRegInfo pointers into TranslationBlocks, for calling into helper_{get,set}cp_reg{,64}. So we have a race condition between whichever cpu thread translates the code first (encoding the pointer), and that cpu thread exiting, so that the next execution of the TB references a freed data structure. Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-08-16linux-user: un-parent OBJECT(cpu) when closing threadAlex Bennée
While forcing the CPU to unrealize by hand does trigger the clean-up code we never fully free resources because refcount never reaches zero. This is because QOM automatically added objects without an explicit parent to /unattached/, incrementing the refcount. Instead of manually triggering unrealization just unparent the object and let the device machinery deal with that for us. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/866 Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220811151413.3350684-2-alex.bennee@linaro.org>
2022-08-11linux-user/aarch64: Reset target data on MADV_DONTNEEDVitaly Buka
aarch64 stores MTE tags in target_date, and they should be reset by MADV_DONTNEED. Signed-off-by: Vitaly Buka <vitalybuka@google.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220711220028.2467290-1-vitalybuka@google.com> [lv: fix code style issues] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-08-10linux-user: fix compat with glibc >= 2.36 sys/mount.hDaniel P. Berrangé
The latest glibc 2.36 has extended sys/mount.h so that it defines the FSCONFIG_* enum constants. These are historically defined in linux/mount.h, and thus if you include both headers the compiler complains: In file included from /usr/include/linux/fs.h:19, from ../linux-user/syscall.c:98: /usr/include/linux/mount.h:95:6: error: redeclaration of 'enum fsconfig_command' 95 | enum fsconfig_command { | ^~~~~~~~~~~~~~~~ In file included from ../linux-user/syscall.c:31: /usr/include/sys/mount.h:189:6: note: originally defined here 189 | enum fsconfig_command | ^~~~~~~~~~~~~~~~ /usr/include/linux/mount.h:96:9: error: redeclaration of enumerator 'FSCONFIG_SET_FLAG' 96 | FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */ | ^~~~~~~~~~~~~~~~~ /usr/include/sys/mount.h:191:3: note: previous definition of 'FSCONFIG_SET_FLAG' with type 'enum fsconfig_command' 191 | FSCONFIG_SET_FLAG = 0, /* Set parameter, supplying no value */ | ^~~~~~~~~~~~~~~~~ ...snip... QEMU doesn't include linux/mount.h, but it does use linux/fs.h and thus gets linux/mount.h indirectly. glibc acknowledges this problem but does not appear to be intending to fix it in the forseeable future, simply documenting it as a known incompatibility with no workaround: https://sourceware.org/glibc/wiki/Release/2.36#Usage_of_.3Clinux.2Fmount.h.3E_and_.3Csys.2Fmount.h.3E https://sourceware.org/glibc/wiki/Synchronizing_Headers To address this requires either removing use of sys/mount.h or linux/fs.h, despite QEMU needing declarations from both. This patch removes linux/fs.h, meaning we have to define various FS_IOC constants that are now unavailable. Signed-off-by: Daniel P. Berrangé <berrange@redhat.com> Tested-by: Richard W.M. Jones <rjones@redhat.com> Message-Id: <20220802164134.1851910-1-berrange@redhat.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-08-05target/loongarch: Update gdb_set_fpu() and gdb_get_fpu()Song Gao
GDB LoongArch fpu use fcc register, update gdb_set_fpu() and gdb_get_fpu() to match it. Signed-off-by: Song Gao <gaosong@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20220805033523.1416837-6-gaosong@loongson.cn>
2022-08-03Merge tag 'linux-user-for-7.1-pull-request' of ↵Richard Henderson
https://gitlab.com/laurent_vivier/qemu into staging Pull request linux-user 20220803 # -----BEGIN PGP SIGNATURE----- # # iQJGBAABCAAwFiEEzS913cjjpNwuT1Fz8ww4vT8vvjwFAmLqjIMSHGxhdXJlbnRA # dml2aWVyLmV1AAoJEPMMOL0/L748bpAP/1HW4wQztNCDL2epXGtDMTHFIjsLlc05 # h/3BwnXXXbRv/m4+IEJLITI5WpyZ24CGgA5kIFPRDxLCIHxcTo5etzqkJzxhnRvU # MNP3m8L5gSAUUZhD8Xw2b95V8vOv4cu8J+sgub8ZaRXJpcHK1cuCF43OeI3bBuoz # HNVY8XHl0E46JyXQmK9/phBRSK8INhlMIORd+k/GzSx7+9/UdIqTj1kVpdgbQ8we # GqrnVW9hYA2T2vUL3SEV8t6GE6lSGRr9bvsyRRfLxJanUEQbGmbJPvqBwjamRwUF # xZOBou/cYQOoI9AVku9bL+h2ITGfrfNZ8Oo7r7oOrz+ZjBfL9hUQqhFhI/oI265n # 4ivzdOcsXH6OT7X+JdZRvyv6pxVL7ycu2KCKvmnNvQSocGHT1OvFqIHAWd+NAdEr # c4q1ob1QdUfZjrzjzLR/qY2NPZat1Ge5lSIXOwC1G3T5umuw8cV7BV9KJJRoQXfE # AWeXsLKqqByQ59z+qObnFIkUXLaUOzKMjHNFpDGSqk+dzXxQYJtBn+b8ZLoL9MLa # miIN9imVzI2gzolIBz9Za2pnBw72bIR2PdXd3zfKH0cqmytOhKlMIEK4KJcB6kMB # CNAbszUwrmBSopGGryf+hLMk9VsPLVUg+Yqnc6/GLY8LF9d8Xr5rd8UzelYowBuh # 3UR/V06U2Skv # =41sQ # -----END PGP SIGNATURE----- # gpg: Signature made Wed 03 Aug 2022 07:56:03 AM PDT # gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C # gpg: issuer "laurent@vivier.eu" # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [undefined] # gpg: aka "Laurent Vivier <laurent@vivier.eu>" [undefined] # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [undefined] # gpg: WARNING: This key is not certified with a trusted signature! # gpg: There is no indication that the signature belongs to the owner. # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * tag 'linux-user-for-7.1-pull-request' of https://gitlab.com/laurent_vivier/qemu: linux-user: Use memfd for open syscall emulation linux-user: Do not treat madvise()'s advice as a bitmask linux-user/flatload.c: Fix setting of image_info::end_code Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-08-02linux-user: Use memfd for open syscall emulationRainer Müller
For certain paths in /proc, the open syscall is intercepted and the returned file descriptor points to a temporary file with emulated contents. If TMPDIR is not accessible or writable for the current user (for example in a read-only mounted chroot or container) tools such as ps from procps may fail unexpectedly. Trying to read one of these paths such as /proc/self/stat would return an error such as ENOENT or EROFS. To relax the requirement on a writable TMPDIR, use memfd_create() instead to create an anonymous file and return its file descriptor. Signed-off-by: Rainer Müller <raimue@codingfarm.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220729154951.76268-1-raimue@codingfarm.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-08-02linux-user/riscv: Align signal frame to 16 bytesRichard Henderson
Follow the kernel's alignment, as we already noted. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1093 Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Message-Id: <20220729201942.30738-1-richard.henderson@linaro.org> Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
2022-08-01misc: fix commonly doubled up wordsDaniel P. Berrangé
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>
2022-07-29linux-user: Do not treat madvise()'s advice as a bitmaskIlya Leoshkevich
Advice is enum, not flags. Doing (advice & MADV_DONTNEED) also matches e.g. MADV_MERGEABLE. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20220725134100.128035-1-iii@linux.ibm.com> Fixes: 892a4f6a750a ("linux-user: Add partial support for MADV_DONTNEED") Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-07-28linux-user/flatload.c: Fix setting of image_info::end_codePeter Maydell
The flatload loader sets the end_code field in the image_info struct incorrectly, due to a typo. This is a very long-standing bug (dating all the way back to when the bFLT loader was added in 2006), but has gone unnoticed because (a) most people don't use bFLT binaries (b) we don't actually do anything with the end_code field, except print it in debugging traces and pass it to TCG plugins Fix the typo. Resolves: https://gitlab.com/qemu-project/qemu/-/issues/1119 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220728151406.2262862-1-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-07-25linux-user: Use target abi_int type for pipefd[1] in pipe()Helge Deller
When writing back the fd[1] pipe file handle to emulated userspace memory, use sizeof(abi_int) as offset insted of the hosts's int type. There is no functional change in this patch. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <YtQ3Id6z8slpVr7r@p100> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-07-25linux-user: Unconditionally use pipe2() syscallHelge Deller
The pipe2() syscall is available on all Linux platforms since kernel 2.6.27, so use it unconditionally to emulate pipe() and pipe2(). Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <YtbZ2ojisTnzxN9Y@p100> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-07-25linux-user/hppa: Fix segfaults on page zeroHelge Deller
This program: int main(void) { asm("bv %r0(%r0)"); return 0; } produces on real hppa hardware the expected segfault: SIGSEGV {si_signo=SIGSEGV, si_code=SEGV_MAPERR, si_addr=0x3} --- killed by SIGSEGV +++ Segmentation fault But when run on linux-user you get instead internal qemu errors: ERROR: linux-user/hppa/cpu_loop.c:172:cpu_loop: code should not be reached Bail out! ERROR: linux-user/hppa/cpu_loop.c:172:cpu_loop: code should not be reached ERROR: accel/tcg/cpu-exec.c:933:cpu_exec: assertion failed: (cpu == current_cpu) Bail out! ERROR: accel/tcg/cpu-exec.c:933:cpu_exec: assertion failed: (cpu == current_cpu) Fix it by adding the missing case for the EXCP_IMP trap in cpu_loop() and raise a segfault. Signed-off-by: Helge Deller <deller@gmx.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <YtWNC56seiV6VenA@p100> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2022-07-11linux-user/aarch64: Add SME related hwcap entriesRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-46-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Implement PR_SME_GET_VL, PR_SME_SET_VLRichard Henderson
These prctl set the Streaming SVE vector length, which may be completely different from the Normal SVE vector length. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-43-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user: Rename sve prctlsRichard Henderson
Add "sve" to the sve prctl functions, to distinguish them from the coming "sme" prctls with similar names. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-42-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Implement SME signal handlingRichard Henderson
Set the SM bit in the SVE record on signal delivery, create the ZA record. Restore SM and ZA state according to the records present on return. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-41-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Move sve record checks into restoreRichard Henderson
Move the checks out of the parsing loop and into the restore function. This more closely mirrors the code structure in the kernel, and is slightly clearer. Reject rather than silently skip incorrect VL and SVE record sizes, bringing our checks in to line with those the kernel does. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-40-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Verify extra record lock succeededRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-39-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Do not allow duplicate or short sve recordsRichard Henderson
In parse_user_sigframe, the kernel rejects duplicate sve records, or records that are smaller than the header. We were silently allowing these cases to pass, dropping the record. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-38-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Tidy target_restore_sigframe error returnRichard Henderson
Fold the return value setting into the goto, so each point of failure need not do both. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-37-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Add SM bit to SVE signal contextRichard Henderson
Make sure to zero the currently reserved fields. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-36-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Reset PSTATE.SM on syscallsRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-35-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-11linux-user/aarch64: Clear tpidr2_el0 if CLONE_SETTLSRichard Henderson
Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20220708151540.18136-34-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2022-07-04linux-user: Add LoongArch cpu_loop supportSong Gao
Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20220624031049.1716097-6-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-04linux-user: Add LoongArch syscall supportSong Gao
Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220624031049.1716097-5-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2022-07-04linux-user: Add LoongArch elf supportSong Gao
Signed-off-by: Song Gao <gaosong@loongson.cn> Signed-off-by: Xiaojuan Yang <yangxiaojuan@loongson.cn> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20220624031049.1716097-4-gaosong@loongson.cn> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
generated by cgit v1.2.3 (git 2.26.2) at 2025-03-15 20:18:50 +0000