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2018-07-03linux-user: Implement signals for openriscRichard Henderson
All of the existing code was boilerplate from elsewhere, and would crash the guest upon the first signal. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Stafford Horne <shorne@gmail.com> --- v2: Add a comment to the new definition of target_pt_regs. Install the signal mask into the ucontext. v3: Incorporate feedback from Laurent.
2018-06-04linux-user: move get_sp_from_cpustate() to target_cpu.hLaurent Vivier
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>
2018-05-03linux-user: introduce target_sigsp() and target_save_altstack()Laurent Vivier
Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411192347.30228-1-laurent@vivier.eu>
2018-04-30linux-user: define TARGET_ARCH_HAS_SETUP_FRAMELaurent Vivier
Instead of calling setup_frame() conditionally to a list of known targets, define TARGET_ARCH_HAS_SETUP_FRAME if the target provides the function and call it only if the macro is defined. Move declarations of setup_frame() and setup_rt_frame() to linux-user/signal-common.h Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-21-laurent@vivier.eu>
2018-04-30linux-user: move ppc/ppc64 signal.c parts to ppc directoryLaurent Vivier
No code change, only move code from signal.c to ppc/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-20-laurent@vivier.eu>
2018-04-30linux-user: move mips/mips64 signal.c parts to mips directoryLaurent Vivier
No code change, only move code from signal.c to mips/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). mips64/signal.c includes mips/signal.c Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-19-laurent@vivier.eu>
2018-04-30linux-user: move sparc/sparc64 signal.c parts to sparc directoryLaurent Vivier
No code change, only move code from signal.c to sparc/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). sparc64/signal.c includes sparc/signal.c Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-18-laurent@vivier.eu>
2018-04-30linux-user: move i386/x86_64 signal.c parts to i386 directoryLaurent Vivier
No code change, only move code from signal.c to i386/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). x86_64/signal.c includes i386/signal.c Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-17-laurent@vivier.eu>
2018-04-30linux-user: move xtensa signal.c parts to xtensa directoryLaurent Vivier
No code change, only move code from signal.c to xtensa/signal.c, except adding includes and exporting setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-16-laurent@vivier.eu>
2018-04-30linux-user: move hppa signal.c parts to hppa directoryLaurent Vivier
No code change, only move code from signal.c to hppa/signal.c, except adding includes and exporting setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-15-laurent@vivier.eu>
2018-04-30linux-user: move riscv signal.c parts to riscv directoryLaurent Vivier
No code change, only move code from signal.c to riscv/signal.c, except adding includes and exporting setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-14-laurent@vivier.eu>
2018-04-30linux-user: move tilegx signal.c parts to tilegx directoryLaurent Vivier
No code change, only move code from signal.c to tilegx/signal.c, except adding includes and exporting setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180424192635.6027-13-laurent@vivier.eu>
2018-04-30linux-user: move alpha signal.c parts to alpha directoryLaurent Vivier
No code change, only move code from signal.c to alpha/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-12-laurent@vivier.eu>
2018-04-30linux-user: move m68k signal.c parts to m68k directoryLaurent Vivier
No code change, only move code from signal.c to m68k/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-11-laurent@vivier.eu>
2018-04-30linux-user: move s390x signal.c parts to s390x directoryLaurent Vivier
No code change, only move code from signal.c to s390x/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-10-laurent@vivier.eu>
2018-04-30linux-user: move openrisc signal.c parts to openrisc directoryLaurent Vivier
No code change, only move code from signal.c to openrisc/signal.c, except adding includes and exporting setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-9-laurent@vivier.eu>
2018-04-30linux-user: move nios2 signal.c parts to nios2 directoryLaurent Vivier
No code change, only move code from signal.c to nios2/signal.c, except adding includes and exporting setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-8-laurent@vivier.eu>
2018-04-30linux-user: move cris signal.c parts to cris directoryLaurent Vivier
No code change, only move code from signal.c to cris/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-7-laurent@vivier.eu>
2018-04-30linux-user: move microblaze signal.c parts to microblaze directoryLaurent Vivier
No code change, only move code from signal.c to microblaze/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-6-laurent@vivier.eu>
2018-04-30linux-user: move sh4 signal.c parts to sh4 directoryLaurent Vivier
No code change, only move code from signal.c to sh4/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-5-laurent@vivier.eu>
2018-04-30linux-user: move arm signal.c parts to arm directoryLaurent Vivier
No code change, only move code from signal.c to arm/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-4-laurent@vivier.eu>
2018-04-30linux-user: move aarch64 signal.c parts to aarch64 directoryLaurent Vivier
No code change, only move code from signal.c to aarch64/signal.c, except adding includes and exporting setup_frame() and setup_rt_frame(). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-3-laurent@vivier.eu>
2018-04-30linux-user: create a dummy per arch signal.cLaurent Vivier
Create a signal-common.h for future use by these new files and use it in the existing signal.c Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180424192635.6027-2-laurent@vivier.eu>
2018-04-17linux-user: check that all of AArch64 SVE extended sigframe is writablePeter Maydell
In commit 8c5931de0ac7738809 we added support for SVE extended sigframe records. These mean that the signal frame might now be larger than the size of the target_rt_sigframe record, so make sure we call lock_user on the entire frame size when we're creating it. (The code for restoring the signal frame already correctly handles the extended records by locking the 'extra' section separately to the main section.) In particular, this fixes a bug even for non-SVE signal frames, because it extends the locked section to cover the target_rt_frame_record. Previously this was part of 'struct target_rt_sigframe', but in commit e1eecd1d9d4c1ade3 we pulled it out into its own struct, and so locking the target_rt_sigframe alone doesn't cover it. This bug would mean that we would fail to correctly handle the case where a signal was taken with SP pointing 16 bytes into an unwritable page, with the page immediately below it in memory being writable. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
2018-04-16linux-user/signal.c: Put AArch64 frame record in the right placePeter Maydell
AArch64 stack frames include a 'frame record' which holds a pointer to the next frame record in the chain and the LR on entry to the function. The procedure calling standard doesn't mandate where exactly this frame record is in the stack frame, but for signal frames the kernel puts it right at the top. We used to put it there too, but in commit 7f0f4208b3a96f22 we accidentally put the "enlarge to the 4K reserved space minimum" check after the "allow for the frame record" code, rather than before it, with the effect that the frame record would be inside the reserved space and immediately after the last used part of it. Move the frame record back out of the reserved space to where we used to put it. This bug shouldn't break any sensible guest code, but test programs that deliberately look at the internal details of the signal frame layout will not find what they are expecting to see. Fixes: 7f0f4208b3a96f22 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-id: 20180412140222.2096-1-peter.maydell@linaro.org
2018-04-10linux-user/signal.c: Ensure AArch64 signal frame isn't too smallPeter Maydell
The AArch64 signal frame design was extended for SVE in commit 8c5931de0ac77388096d79ceb, so that instead of having a fixed setup we now add various records to the frame, with some of them possibly overflowing into an extra space outside the original 4K reserved block in the target_sigcontext. However, we failed to ensure that we always at least allocate the 4K reserved block. This is ABI, and some userspace programs rely on it. In particular the dash shell would segfault if the frame wasn't as big enough. (Compare the kernel's sigframe_size() function in arch/arm64/kernel/signal.c.) Reported-by: Richard Henwood <richard.henwood@arm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180409140714.26841-1-peter.maydell@linaro.org Fixes: https://bugs.launchpad.net/bugs/1761535 Fixes: 8c5931de0ac77388096d79ceb Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-04-04Merge remote-tracking branch ↵Peter Maydell
'remotes/vivier2/tags/linux-user-for-2.12-pull-request' into staging # gpg: Signature made Tue 03 Apr 2018 11:33:31 BST # gpg: using RSA key F30C38BD3F2FBE3C # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" # gpg: aka "Laurent Vivier <laurent@vivier.eu>" # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier2/tags/linux-user-for-2.12-pull-request: linux-user: fix TARGET___O_TMPFILE for sparc linux-user: define TARGET_ARCH_HAS_KA_RESTORER linux-user: fix alpha signal emulation Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-04-03linux-user: define TARGET_ARCH_HAS_KA_RESTORERLaurent Vivier
Sparc as an extended sigaction structure containing the field ka_restorer used in place of sa_restorer. Define TARGET_ARCH_HAS_KA_RESTORER and use it with sparc. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180402102453.9883-2-laurent@vivier.eu>
2018-04-03linux-user: fix alpha signal emulationLaurent Vivier
setup_frame() doesn't set correctly the address of the trampoline code. The offset of retcode array must be added to the stack frame address. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180401204653.14211-1-laurent@vivier.eu>
2018-03-31target/xtensa: fix flush_window_regsMax Filippov
flush_window_regs uses wrong stack frame to save overflow registers in call8 and call12 frames, which results in wrong register values in callers of a function that received a signal. Reimplement flush_window_regs closely following window overflow sequence. Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-03-17Merge remote-tracking branch 'remotes/xtensa/tags/20180316-xtensa' into stagingPeter Maydell
target/xtensa linux-user support. - small cleanup for xtensa registers dumping (-d cpu); - add support for debugging linux-user process with xtensa-linux-gdb (as opposed to xtensa-elf-gdb), which can only access unprivileged registers; - enable MTTCG for target/xtensa; - cleanup in linux-user/mmap area making sure that it works correctly with limited 30-bit-wide user address space; - import xtensa-specific definitions from the linux kernel, conditionalize user-only/softmmu-only code and add handlers for signals, exceptions, process/thread creation and core registers dumping. # gpg: Signature made Fri 16 Mar 2018 16:46:19 GMT # gpg: using RSA key 51F9CC91F83FA044 # gpg: Good signature from "Max Filippov <filippov@cadence.com>" # gpg: aka "Max Filippov <max.filippov@cogentembedded.com>" # gpg: aka "Max Filippov <jcmvbkbc@gmail.com>" # Primary key fingerprint: 2B67 854B 98E5 327D CDEB 17D8 51F9 CC91 F83F A044 * remotes/xtensa/tags/20180316-xtensa: MAINTAINERS: fix W: address for xtensa qemu-binfmt-conf.sh: add qemu-xtensa target/xtensa: add linux-user support linux-user: drop unused target_msync function linux-user: fix target_mprotect/target_munmap error return values linux-user: fix assertion in shmdt linux-user: fix mmap/munmap/mprotect/mremap/shmat target/xtensa: support MTTCG target/xtensa: use correct number of registers in gdbstub target/xtensa: mark register windows in the dump target/xtensa: dump correct physical registers Signed-off-by: Peter Maydell <peter.maydell@linaro.org> # Conflicts: # linux-user/syscall.c
2018-03-16target/xtensa: add linux-user supportMax Filippov
Import list of syscalls from the kernel source. Conditionalize code/data that is only used with softmmu. Implement exception handlers. Implement signal hander (only the core registers for now, no coprocessors or TIE). Cc: Riku Voipio <riku.voipio@iki.fi> Cc: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
2018-03-15Merge remote-tracking branch ↵Peter Maydell
'remotes/vivier2/tags/linux-user-for-2.12-pull-request' into staging # gpg: Signature made Tue 13 Mar 2018 17:33:03 GMT # gpg: using RSA key F30C38BD3F2FBE3C # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" # gpg: aka "Laurent Vivier <laurent@vivier.eu>" # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier2/tags/linux-user-for-2.12-pull-request: linux-user: init_guest_space: Add a comment about search strategy linux-user: init_guest_space: Don't try to align if we'll reject it linux-user: init_guest_space: Clean up control flow a bit linux-user: init_guest_commpage: Add a comment about size check linux-user: init_guest_space: Clarify page alignment logic linux-user: init_guest_space: Correctly handle guest_start in commpage initialization linux-user: init_guest_space: Clean up if we can't initialize the commpage linux-user: Rename validate_guest_space => init_guest_commpage linux-user: Use #if to only call validate_guest_space for 32-bit ARM target qemu-binfmt-conf.sh: add qemu-xtensa linux-user: drop unused target_msync function linux-user: fix target_mprotect/target_munmap error return values linux-user: fix assertion in shmdt linux-user: fix mmap/munmap/mprotect/mremap/shmat linux-user: Support f_flags in statfs when available. linux-user: allows to use "--systemd ALL" with qemu-binfmt-conf.sh linux-user: Remove the unused "not implemented" signal handling stubs linux-user: Drop unicore32 code Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-09linux-user: Remove the unused "not implemented" signal handling stubsPeter Maydell
Now we've dropped unicore32, all of the architectures we support for linux-user implement the signal handling routines. The dummy "just print a message" versions are unimplemented, so we can drop them entirely. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180308144733.25615-3-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-09linux-user: Drop unicore32 codePeter Maydell
We dropped the unicore32-linux-user target in commit 5e2b40f7271cf9 in 2016. Nobody has made any attempt to fix the issues that caused us to drop it, so remove the associated code. (The system emulation parts of unicore32 remain.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180308144733.25615-2-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-03-09aarch64-linux-user: Add support for SVE signal frame recordsRichard Henderson
Depending on the currently selected size of the SVE vector registers, we can either store the data within the "standard" allocation, or we may beedn to allocate additional space with an EXTRA record. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180303143823.27055-6-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-09aarch64-linux-user: Add support for EXTRA signal frame recordsRichard Henderson
The EXTRA record allows for additional space to be allocated beyon what is currently reserved. Add code to emit and read this record type. Nothing uses extra space yet. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180303143823.27055-5-richard.henderson@linaro.org Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-09aarch64-linux-user: Remove struct target_aux_contextRichard Henderson
This changes the qemu signal frame layout to be more like the kernel's, in that the various records are dynamically allocated rather than fixed in place by a structure. For now, all of the allocation is out of uc.tuc_mcontext.__reserved, so the allocation is actually trivial. That will change with SVE support. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180303143823.27055-4-richard.henderson@linaro.org Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-09aarch64-linux-user: Split out helpers for guest signal handlingRichard Henderson
Split out helpers from target_setup_frame and target_restore_sigframe for dealing with general registers, fpsimd registers, and the end record. When we add support for sve registers, the relative positions of these will change. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180303143823.27055-3-richard.henderson@linaro.org Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-03-07RISC-V Linux User EmulationMichael Clark
Implementation of linux user emulation for RISC-V. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Sagar Karandikar <sagark@eecs.berkeley.edu> Signed-off-by: Michael Clark <mjc@sifive.com>
2018-01-30target/hppa: Add control registersRichard Henderson
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-01-30linux-user/signal.c: Rename MC_* definesPeter Maydell
The SPARC code in linux-user/signal.c defines a set of MC_* constants. On some SPARC hosts these are also defined by sys/ucontext.h, resulting in build failures: linux-user/signal.c:2786:0: error: "MC_NGREG" redefined [-Werror] #define MC_NGREG 19 In file included from /usr/include/signal.h:302:0, from include/qemu/osdep.h:86, from linux-user/signal.c:19: /usr/include/sparc64-linux-gnu/sys/ucontext.h:59:0: note: this is the location of the previous definition # define MC_NGREG __MC_NGREG Rename all these constants to SPARC_MC_* to avoid the clash. Cc: qemu-stable@nongnu.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1517318239-15764-1-git-send-email-peter.maydell@linaro.org
2018-01-25target/arm: Add aa{32, 64}_vfp_{dreg, qreg} helpersRichard Henderson
Helpers that return a pointer into env->vfp.regs so that we isolate the logic of how to index the regs array for different cpu modes. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20180119045438.28582-7-richard.henderson@linaro.org Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-11linux-user: Fix endianess of aarch64 signal trampolineMichael Weiser
Since for aarch64 the signal trampoline is synthesized directly into the signal frame we need to make sure the instructions end up little-endian. Otherwise the wrong endianness will cause a SIGILL upon return from the signal handler on big-endian targets. Signed-off-by: Michael Weiser <michael.weiser@gmx.de> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20171220212308.12614-4-michael.weiser@gmx.de Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-01-04linux-user, m68k: correctly manage SR in contextLaurent Vivier
Use cpu_m68k_get_ccr()/cpu_m68k_set_ccr() to setup and restore correctly the value of SR in the context structure. Fix target_rt_setup_ucontext(). Fixes: 3219de458c ("linux-user: correctly manage SR in ucontext") Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180104012913.30763-4-laurent@vivier.eu>
2017-12-18Remove empty statementsLadi Prosek
Thanks to Laszlo Ersek for spotting the double semicolon in target/i386/kvm.c I have trivially grepped the tree for ';;' in C files. Suggested-by: Laszlo Ersek <lersek@redhat.com> Signed-off-by: Ladi Prosek <lprosek@redhat.com> Reviewed-by: Laszlo Ersek <lersek@redhat.com> Reviewed-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2017-11-07linux-user: Restrict usage of sa_restorerRichard Henderson
Reading and writing to an sa_restorer member that isn't supposed to exist corrupts user memory. Introduce TARGET_ARCH_HAS_SA_RESTORER, similar to the kernel's __ARCH_HAS_SA_RESTORER. Reported-by: Helge Deller <deller@gmx.de> Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2017-10-16target/m68k,linux-user: manage FP registers in ucontextLaurent Vivier
Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2017-07-20Replace 'struct ucontext' with 'ucontext_t' typeKhem Raj
glibc used to have: typedef struct ucontext { ... } ucontext_t; glibc now has: typedef struct ucontext_t { ... } ucontext_t; (See https://sourceware.org/bugzilla/show_bug.cgi?id=21457 for detail and rationale for the glibc change) However, QEMU used "struct ucontext" in declarations. This is a private name and compatibility cannot be guaranteed. Switch to only using the standardized type name. Signed-off-by: Khem Raj <raj.khem@gmail.com> Message-id: 20170628204452.41230-1-raj.khem@gmail.com Cc: Kamil Rytarowski <kamil@netbsd.org> Cc: Riku Voipio <riku.voipio@iki.fi> Cc: Laurent Vivier <laurent@vivier.eu> Cc: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Eric Blake <eblake@redhat.com> [PMM: Rewrote commit message, based mostly on the one from Nathaniel McCallum] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2017-07-18linux-user/sh4: Clean env->flags on signal boundariesRichard Henderson
If a signal is delivered during the execution of a delay slot, or a gUSA region, clear those bits from the environment so that the signal handler does not start in that same state. Cleaning the bits on signal return is paranoid good sense. Reviewed-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Richard Henderson <rth@twiddle.net> Message-Id: <20170718200255.31647-10-rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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