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2021-06-20linux-user: Let sigaction query SIGKILL/SIGSTOPIlya Leoshkevich
The kernel allows doing this, so let's allow this in qemu as well. Valgrind relies on this. Signed-off-by: Ilya Leoshkevich <iii@linux.ibm.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20210601145600.3131040-2-iii@linux.ibm.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-06-15linux-user: Disable static assert involving __SIGRTMAX if it is missingMichael Forney
This check is to ensure that the loop in signal_table_init() from SIGRTMIN to SIGRTMAX falls within the bounds of host_to_target_signal_table (_NSIG). However, it is not critical, since _NSIG is already defined to be the one larger than the largest signal supported by the system (as specified in the upcoming POSIX revision[0]). musl libc does not define __SIGRTMAX, so disabling this check when it is missing fixes one of the last remaining errors when building qemu. [0] https://www.austingroupbugs.net/view.php?id=741 Signed-off-by: Michael Forney <mforney@mforney.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20210526190203.4255-1-mforney@mforney.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-18linux-user: Pass ka_restorer to do_sigactionRichard Henderson
The value of ka_restorer needs to be saved in sigact_table. At the moment, the attempt to save it in do_syscall is improperly clobbering user memory. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20210422230227.314751-4-richard.henderson@linaro.org> [lv: remove tab] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-15linux-user: Pass CPUArchState to target_restore_altstackRichard Henderson
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>
2021-05-15linux-user: Pass CPUArchState to do_sigaltstackRichard Henderson
Now that we have exactly one call, it's easy to pass in env instead of passing in the sp value. Use target_save_altstack, which required env. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210426025334.1168495-4-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-05-15linux-user: Split out target_restore_altstackRichard Henderson
Create a function to match target_save_altstack. Fix some style and unlock issues in do_sigaltstack. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20210426025334.1168495-2-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2021-02-13linux-user/signal: Decode waitid si_codeAlistair Francis
When mapping the host waitid status to the target status we previously just used decoding information in the status value. This doesn't follow what the waitid documentation describes, which instead suggests using the si_code value for the decoding. This results in the incorrect values seen when calling waitid. This is especially apparent on RV32 where all wait calls use waitid (see the bug case). This patch just passes the waitid status directly back to the guest. Buglink: https://bugs.launchpad.net/qemu/+bug/1906193 Signed-off-by: Alistair Francis <alistair.francis@wdc.com> Tested-by: Andreas K. Hüttel <dilfridge@gentoo.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <1fb2d56aa23a81f4473e638abe9e2d78c09a3d5b.1611080607.git.alistair.francis@wdc.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-09-23qemu/atomic.h: rename atomic_ to qatomic_Stefan Hajnoczi
clang's C11 atomic_fetch_*() functions only take a C11 atomic type pointer argument. QEMU uses direct types (int, etc) and this causes a compiler error when a QEMU code calls these functions in a source file that also included <stdatomic.h> via a system header file: $ CC=clang CXX=clang++ ./configure ... && make ../util/async.c:79:17: error: address argument to atomic operation must be a pointer to _Atomic type ('unsigned int *' invalid) Avoid using atomic_*() names in QEMU's atomic.h since that namespace is used by <stdatomic.h>. Prefix QEMU's APIs with 'q' so that atomic.h and <stdatomic.h> can co-exist. I checked /usr/include on my machine and searched GitHub for existing "qatomic_" users but there seem to be none. This patch was generated using: $ git grep -h -o '\<atomic\(64\)\?_[a-z0-9_]\+' include/qemu/atomic.h | \ sort -u >/tmp/changed_identifiers $ for identifier in $(</tmp/changed_identifiers); do sed -i "s%\<$identifier\>%q$identifier%g" \ $(git grep -I -l "\<$identifier\>") done I manually fixed line-wrap issues and misaligned rST tables. Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Acked-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20200923105646.47864-1-stefanha@redhat.com>
2020-02-19linux-user: Use `qemu_log' for straceJosh Kunz
This change switches linux-user strace logging to use the newer `qemu_log` logging subsystem rather than the older `gemu_log` (notice the "g") logger. `qemu_log` has several advantages, namely that it allows logging to a file, and provides a more unified interface for configuration of logging (via the QEMU_LOG environment variable or options). This change introduces a new log mask: `LOG_STRACE` which is used for logging of user-mode strace messages. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Josh Kunz <jkz@google.com> Message-Id: <20200204025416.111409-3-jkz@google.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-02-14Merge remote-tracking branch ↵Peter Maydell
'remotes/vivier2/tags/linux-user-for-5.0-pull-request' into staging Implement TARGET_SO_PEERSEC Fix rt signals management # gpg: Signature made Thu 13 Feb 2020 12:20:50 GMT # gpg: using RSA key CD2F75DDC8E3A4DC2E4F5173F30C38BD3F2FBE3C # gpg: issuer "laurent@vivier.eu" # gpg: Good signature from "Laurent Vivier <lvivier@redhat.com>" [full] # gpg: aka "Laurent Vivier <laurent@vivier.eu>" [full] # gpg: aka "Laurent Vivier (Red Hat) <lvivier@redhat.com>" [full] # Primary key fingerprint: CD2F 75DD C8E3 A4DC 2E4F 5173 F30C 38BD 3F2F BE3C * remotes/vivier2/tags/linux-user-for-5.0-pull-request: linux-user: implement TARGET_SO_PEERSEC linux-user: fix use of SIGRTMIN linux-user: fix TARGET_NSIG and _NSIG uses linux-user: cleanup signal.c linux-user: add missing TARGET_SIGRTMIN for hppa Signed-off-by: Peter Maydell <peter.maydell@linaro.org> # Conflicts: # linux-user/signal.c
2020-02-12linux-user: fix use of SIGRTMINLaurent Vivier
Some RT signals can be in use by glibc, it's why SIGRTMIN (34) is generally greater than __SIGRTMIN (32). So SIGRTMIN cannot be mapped to TARGET_SIGRTMIN. Instead of swapping only SIGRTMIN and SIGRTMAX, map all the range [TARGET_SIGRTMIN ... TARGET_SIGRTMAX - X] to [__SIGRTMIN + X ... SIGRTMAX ] (SIGRTMIN is __SIGRTMIN + X). Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Taylor Simson <tsimpson@quicinc.com> Tested-by: Taylor Simpson <tsimpson@quicinc.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20200212125658.644558-5-laurent@vivier.eu>
2020-02-12linux-user: fix TARGET_NSIG and _NSIG usesLaurent Vivier
Valid signal numbers are between 1 (SIGHUP) and SIGRTMAX. System includes define _NSIG to SIGRTMAX + 1, but QEMU (like kernel) defines TARGET_NSIG to TARGET_SIGRTMAX. Fix all the checks involving the signal range. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Tested-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <20200212125658.644558-4-laurent@vivier.eu>
2020-02-12linux-user: cleanup signal.cLaurent Vivier
No functional changes. Prepare the field for future fixes. Remove memset(.., 0, ...) that is useless on a static array Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Tested-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <20200212125658.644558-3-laurent@vivier.eu>
2020-02-12build: move TARGET_GPROF to config-host.makPaolo Bonzini
TARGET_GPROF is the same for all targets, write it to config-host.mak instead. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-id: <20200204161104.21077-1-pbonzini@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2019-07-26linux-user: Make sigaltstack stacks per-threadPeter Maydell
The alternate signal stack set up by the sigaltstack syscall is supposed to be per-thread. We were incorrectly implementing it as process-wide. This causes problems for guest binaries that rely on this. Notably the Go runtime does, and so we were seeing crashes caused by races where two guest threads might incorrectly both execute on the same stack simultaneously. Replace the global target_sigaltstack_used with a field sigaltstack_used in the TaskState, and make all the references to the old global instead get a pointer to the TaskState and use the field. Fixes: https://bugs.launchpad.net/qemu/+bug/1696773 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Tested-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20190725131645.19501-1-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-06-12Include qemu-common.h exactly where neededMarkus Armbruster
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]
2019-06-10cpu: Replace ENV_GET_CPU with env_cpuRichard Henderson
Now that we have both ArchCPU and CPUArchState, we can define this generically instead of via macro in each target's cpu.h. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Alistair Francis <alistair.francis@wdc.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2019-05-10linux-user: avoid treading on gprof's SIGPROF signalsAlex Bennée
The guest tends to get confused when it receives signals it doesn't know about. Given the gprof magic has also set up it's own handler we would do well to avoid stomping on it as well. Signed-off-by: Alex Bennée <alex.bennee@linaro.org> Message-Id: <20190502145846.26226-1-alex.bennee@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-01-11avoid TABs in files that only contain a fewPaolo Bonzini
Most files that have TABs only contain a handful of them. Change them to spaces so that we don't confuse people. disas, standard-headers, linux-headers and libdecnumber are imported from other projects and probably should be exempted from the check. Outside those, after this patch the following files still contain both 8-space and TAB sequences at the beginning of the line. Many of them have a majority of TABs, or were initially committed with all tabs. bsd-user/i386/target_syscall.h bsd-user/x86_64/target_syscall.h crypto/aes.c hw/audio/fmopl.c hw/audio/fmopl.h hw/block/tc58128.c hw/display/cirrus_vga.c hw/display/xenfb.c hw/dma/etraxfs_dma.c hw/intc/sh_intc.c hw/misc/mst_fpga.c hw/net/pcnet.c hw/sh4/sh7750.c hw/timer/m48t59.c hw/timer/sh_timer.c include/crypto/aes.h include/disas/bfd.h include/hw/sh4/sh.h libdecnumber/decNumber.c linux-headers/asm-generic/unistd.h linux-headers/linux/kvm.h linux-user/alpha/target_syscall.h linux-user/arm/nwfpe/double_cpdo.c linux-user/arm/nwfpe/fpa11_cpdt.c linux-user/arm/nwfpe/fpa11_cprt.c linux-user/arm/nwfpe/fpa11.h linux-user/flat.h linux-user/flatload.c linux-user/i386/target_syscall.h linux-user/ppc/target_syscall.h linux-user/sparc/target_syscall.h linux-user/syscall.c linux-user/syscall_defs.h linux-user/x86_64/target_syscall.h slirp/cksum.c slirp/if.c slirp/ip.h slirp/ip_icmp.c slirp/ip_icmp.h slirp/ip_input.c slirp/ip_output.c slirp/mbuf.c slirp/misc.c slirp/sbuf.c slirp/socket.c slirp/socket.h slirp/tcp_input.c slirp/tcpip.h slirp/tcp_output.c slirp/tcp_subr.c slirp/tcp_timer.c slirp/tftp.c slirp/udp.c slirp/udp.h target/cris/cpu.h target/cris/mmu.c target/cris/op_helper.c target/sh4/helper.c target/sh4/op_helper.c target/sh4/translate.c tcg/sparc/tcg-target.inc.c tests/tcg/cris/check_addo.c tests/tcg/cris/check_moveq.c tests/tcg/cris/check_swap.c tests/tcg/multiarch/test-mmap.c ui/vnc-enc-hextile-template.h ui/vnc-enc-zywrle.h util/envlist.c util/readline.c The following have only TABs: bsd-user/i386/target_signal.h bsd-user/sparc64/target_signal.h bsd-user/sparc64/target_syscall.h bsd-user/sparc/target_signal.h bsd-user/sparc/target_syscall.h bsd-user/x86_64/target_signal.h crypto/desrfb.c hw/audio/intel-hda-defs.h hw/core/uboot_image.h hw/sh4/sh7750_regnames.c hw/sh4/sh7750_regs.h include/hw/cris/etraxfs_dma.h linux-user/alpha/termbits.h linux-user/arm/nwfpe/fpopcode.h linux-user/arm/nwfpe/fpsr.h linux-user/arm/syscall_nr.h linux-user/arm/target_signal.h linux-user/cris/target_signal.h linux-user/i386/target_signal.h linux-user/linux_loop.h linux-user/m68k/target_signal.h linux-user/microblaze/target_signal.h linux-user/mips64/target_signal.h linux-user/mips/target_signal.h linux-user/mips/target_syscall.h linux-user/mips/termbits.h linux-user/ppc/target_signal.h linux-user/sh4/target_signal.h linux-user/sh4/termbits.h linux-user/sparc64/target_syscall.h linux-user/sparc/target_signal.h linux-user/x86_64/target_signal.h linux-user/x86_64/termbits.h pc-bios/optionrom/optionrom.h slirp/mbuf.h slirp/misc.h slirp/sbuf.h slirp/tcp.h slirp/tcp_timer.h slirp/tcp_var.h target/i386/svm.h target/sparc/asi.h target/xtensa/core-dc232b/xtensa-modules.inc.c target/xtensa/core-dc233c/xtensa-modules.inc.c target/xtensa/core-de212/core-isa.h target/xtensa/core-de212/xtensa-modules.inc.c target/xtensa/core-fsf/xtensa-modules.inc.c target/xtensa/core-sample_controller/core-isa.h target/xtensa/core-sample_controller/xtensa-modules.inc.c target/xtensa/core-test_kc705_be/core-isa.h target/xtensa/core-test_kc705_be/xtensa-modules.inc.c tests/tcg/cris/check_abs.c tests/tcg/cris/check_addc.c tests/tcg/cris/check_addcm.c tests/tcg/cris/check_addoq.c tests/tcg/cris/check_bound.c tests/tcg/cris/check_ftag.c tests/tcg/cris/check_int64.c tests/tcg/cris/check_lz.c tests/tcg/cris/check_openpf5.c tests/tcg/cris/check_sigalrm.c tests/tcg/cris/crisutils.h tests/tcg/cris/sys.c tests/tcg/i386/test-i386-ssse3.c ui/vgafont.h Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Message-Id: <20181213223737.11793-3-pbonzini@redhat.com> Reviewed-by: Aleksandar Markovic <amarkovic@wavecomp.com> Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com> Reviewed-by: Wainer dos Santos Moschetta <wainersm@redhat.com> Acked-by: Richard Henderson <richard.henderson@linaro.org> Acked-by: Eric Blake <eblake@redhat.com> Acked-by: David Gibson <david@gibson.dropbear.id.au> Reviewed-by: Stefan Markovic <smarkovic@wavecomp.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
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
generated by cgit v1.2.3 (git 2.26.2) at 2025-01-06 17:38:46 +0000