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2018-04-30linux-user: Add ARM get_tls syscall supportChristophe Lyon
Co-Authored-By: Mickaël Guêné <mickael.guene@st.com> Signed-off-by: Christophe Lyon <christophe.lyon@st.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20180416091845.7315-1-christophe.lyon@st.com> [lv: moved the change to linux-user/arm/cpu_loop.c] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-04-30linux-user: move xtensa cpu loop to xtensa directoryLaurent Vivier
No code change, only move code from main.c to xtensa/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411185651.21351-20-laurent@vivier.eu>
2018-04-30linux-user: move hppa cpu loop to hppa directoryLaurent Vivier
No code change, only move code from main.c to hppa/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-19-laurent@vivier.eu>
2018-04-30linux-user: move riscv cpu loop to riscv directoryLaurent Vivier
No code change, only move code from main.c to riscv/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Michael Clark <mjc@sifive.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-18-laurent@vivier.eu>
2018-04-30linux-user: move tilegx cpu loop to tilegx directoryLaurent Vivier
No code change, only move code from main.c to tilegx/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411185651.21351-17-laurent@vivier.eu>
2018-04-30linux-user: move s390x cpu loop to s390x directoryLaurent Vivier
No code change, only move code from main.c to s390x/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Cornelia Huck <cohuck@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-16-laurent@vivier.eu>
2018-04-30linux-user: move alpha cpu loop to alpha directoryLaurent Vivier
No code change, only move code from main.c to alpha/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-15-laurent@vivier.eu>
2018-04-30linux-user: move m68k cpu loop to m68k directoryLaurent Vivier
No code change, only move code from main.c to m68k/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411185651.21351-14-laurent@vivier.eu>
2018-04-30linux-user: move microblaze cpu loop to microblaze directoryLaurent Vivier
No code change, only move code from main.c to microblaze/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-13-laurent@vivier.eu>
2018-04-30linux-user: move cris cpu loop to cris directoryLaurent Vivier
No code change, only move code from main.c to cris/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-12-laurent@vivier.eu>
2018-04-30linux-user: move sh4 cpu loop to sh4 directoryLaurent Vivier
No code change, only move code from main.c to sh4/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-11-laurent@vivier.eu>
2018-04-30linux-user: move openrisc cpu loop to openrisc directoryLaurent Vivier
No code change, only move code from main.c to openrisc/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411185651.21351-10-laurent@vivier.eu>
2018-04-30linux-user: move nios2 cpu loop to nios2 directoryLaurent Vivier
No code change, only move code from main.c to nios2/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411185651.21351-9-laurent@vivier.eu>
2018-04-30linux-user: move mips/mips64 cpu loop to mips directoryLaurent Vivier
No code change, only move code from main.c to mips/cpu_loop.c. Include mips/cpu_loop.c in mips64/cpu_loop.c to avoid to duplicate code. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-8-laurent@vivier.eu>
2018-04-30linux-user: move ppc/ppc64 cpu loop to ppc directoryLaurent Vivier
No code change, only move code from main.c to ppc/cpu_loop.c. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411185651.21351-7-laurent@vivier.eu>
2018-04-30linux-user: move sparc/sparc64 cpu loop to sparc directoryLaurent Vivier
No code change, only move code from main.c to sparc/cpu_loop.c. Include sparc/cpu_loop.c in sparc64/cpu_loop.c to avoid to duplicate code. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180411185651.21351-6-laurent@vivier.eu>
2018-04-30linux-user: move arm cpu loop to arm directoryLaurent Vivier
No code change, only move code from main.c to arm/cpu_loop.c and duplicate some macro defined for both arm and aarch64. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411185651.21351-5-laurent@vivier.eu>
2018-04-30linux-user: move aarch64 cpu loop to aarch64 directoryLaurent Vivier
No code change, only move code from main.c to aarch64/cpu_loop.c and duplicate some macro defined for both arm and aarch64. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411185651.21351-4-laurent@vivier.eu>
2018-04-30linux-user: move i386/x86_64 cpu loop to i386 directoryLaurent Vivier
No code change, only move code from main.c to i386/cpu_loop.c. Include i386/cpu_loop.c in x86_64/cpu_loop.c to avoid to duplicate code. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411185651.21351-3-laurent@vivier.eu>
2018-04-30linux-user: create a dummy per arch cpu_loop.cLaurent Vivier
Create a cpu_loop-common.h for future use by these new files and use it in the existing main.c Introduce target_cpu_copy_regs(): declare the function in cpu_loop-common.h and an empty function for each target, to move all the cpu_loop prologues to this function. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411185651.21351-2-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>
2018-04-30linux-user: Fix getdents emulation for 64 bit guest on 32 bit hostPeter Maydell
Currently we mishandle emulation of the getdents syscall for the case of a 64 bit guest on a 32 bit host -- it defaults into the 'host and guest same size' codepath and generates incorrect structures in the guest buffer. We can't easily handle the 64-on-32 case using the host getdents syscall, because the guest struct dirent is bigger than the host struct dirent, and we might find the host syscall has handed us back more records than we can fit in the guest buffer after conversion. Instead, always emulate 64-on-32 getdents with the host getdents64. This avoids the buffer-overrun problem because a dirent64 struct is always the same size on any host and always larger than any architecture's dirent struct. Reported-by: Henry Wertz <hwertz10@gmail.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20180419125740.2695-1-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-04-30linux-user: set minimum uname for RISC-VAlex Bennée
As support for RISC-V was only merged into the mainline kernel at 4.15 it is unlikely that glibc will be happy with a reported kernel version of 3.8.0. Indeed when I testing binaries created by the current Debian Sid compiler the tests failed with: FATAL: kernel too old Bump the version to the minimum a RISC-V glibc would expect: https://sourceware.org/git/?p=glibc.git;a=blob;f=sysdeps/unix/sysv/linux/riscv/configure.ac Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Palmer Dabbelt <palmer@sifive.com> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180425100218.24785-1-alex.bennee@linaro.org> Signed-off-by: Laurent Vivier <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
2018-04-11Merge remote-tracking branch ↵Peter Maydell
'remotes/vivier2/tags/linux-user-for-2.12-pull-request' into staging # gpg: Signature made Tue 10 Apr 2018 17:00:19 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: implement HWCAP bits on MIPS linux-user: add microblaze/microblazeel magic numbers in qemu-binfmt-conf.sh linux-user: fix microblaze get_sp_from_cpustate() Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-04-10linux-user: implement HWCAP bits on MIPSJames Cowgill
Add support for the two currently defined HWCAP bits on MIPS - R6 and MSA. Buglink: https://bugs.launchpad.net/qemu/+bug/1754372 Signed-off-by: James Cowgill <james.cowgill@mips.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180315151348.6451-1-james.cowgill@mips.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-04-10linux-user: fix microblaze get_sp_from_cpustate()Laurent Vivier
get_sigframe() uses regs[1] and this is actual SP. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180409115212.875-1-laurent@vivier.eu>
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>
2018-04-10Merge remote-tracking branch 'remotes/xtensa/tags/20180409-xtensa' into stagingPeter Maydell
Fix file offset for preadv/pwritev linux-user syscalls. # gpg: Signature made Tue 10 Apr 2018 03:04:24 BST # 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/20180409-xtensa: linux-user: fix preadv/pwritev offsets Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2018-04-09linux-user: fix preadv/pwritev offsetsMax Filippov
preadv/pwritev accept low and high parts of file offset in two separate parameters. When host bitness doesn't match guest bitness these parts must be appropriately recombined. Introduce target_to_host_low_high that does this recombination and use it in preadv/pwritev syscalls. This fixes glibc testsuite test misc/tst-preadvwritev64. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
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