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2021-02-16linux-user: Use cpu_untagged_addr in access_ok; split out *_untaggedRichard Henderson2-3/+4
Provide both tagged and untagged versions of access_ok. In a few places use thread_cpu, as the user is several callees removed from do_syscall1. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210212184902.1251044-17-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2021-02-16exec: Use cpu_untagged_addr in g2h; split out g2h_untaggedRichard Henderson1-2/+2
Use g2h_untagged in contexts that have no cpu, e.g. the binary loaders that operate before the primary cpu is created. As a colollary, target_mmap and friends must use untagged addresses, since they are used by the loaders. Use g2h_untagged on values returned from target_mmap, as the kernel never applies a tag itself. Use g2h_untagged on all pc values. The only current user of tags, aarch64, removes tags from code addresses upon branch, so "pc" is always untagged. Use g2h with the cpu context on hand wherever possible. Use g2h_untagged in lock_user, which will be updated soon. Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20210212184902.1251044-13-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2020-11-15linux user: Fix Lesser GPL version numberChetan Pant2-2/+2
There is no "version 2" of the "Lesser" General Public License. It is either "GPL version 2.0" or "Lesser GPL version 2.1". This patch replaces all occurrences of "Lesser GPL version 2" with "Lesser GPL version 2.1" in comment section. Signed-off-by: Chetan Pant <chetan4windows@gmail.com> Message-Id: <20201023122455.19417-1-chetan4windows@gmail.com> Reviewed-by: Thomas Huth <thuth@redhat.com> Signed-off-by: Thomas Huth <thuth@redhat.com>
2020-11-11linux-user: Correct definition of stack_tLemonBoy1-3/+3
Some platforms used the wrong definition of stack_t where the flags and size fields were swapped or where the flags field had type ulong instead of int. Due to the presence of padding space in the structure and the prevalence of little-endian machines this problem went unnoticed for a long time. The type definitions have been cross-checked with the ones defined in the Linux kernel v5.9, plus some older versions for a few architecture that have been removed and Xilinx's kernel fork for NiosII [1]. The bsd-user headers remain unchanged as I don't know if they are wrong or not. [1] https://github.com/Xilinx/linux-xlnx/blob/master/arch/nios2/include/uapi/asm/signal.h Signed-off-by: Giuseppe Musacchio <thatlemon@gmail.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <e9d47692-ee92-009f-6007-0abc3f502b97@gmail.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-10-26linux-user: update syscall.tbl to Linux 5.9-rc7Laurent Vivier1-409/+411
Updated running scripts/update-syscalltbl.sh Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200930003033.554124-4-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-08-27linux-user: Add generic 'termbits.h' for some archsFilip Bozuta1-232/+1
This patch introduces a generic 'termbits.h' file for following archs: 'aarch64', 'arm', 'i386, 'm68k', 'microblaze', 'nios2', 'openrisc', 'riscv', 's390x', 'x86_64'. Since all of these archs have the same termios flag values and same ioctl_tty numbers, there is no need for a separate 'termbits.h' file for each one of them. For that reason one generic 'termbits.h' file was added for all of them and an '#include' directive was added for this generic file in every arch 'termbits.h' file. Also, some of the flag values that were missing were added in this generic file so that it matches the generic 'termibts.h' and 'ioctls.h' files from the kernel: 'asm-generic/termbits.h' and 'asm-generic/ioctls.h'. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200723210233.349690-2-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-08-27linux-user: Add strace support for printing arguments of syscalls used to ↵Filip Bozuta1-2/+3
lock and unlock memory This patch implements strace argument printing functionality for following syscalls: * mlock, munlock, mlockall, munlockall - lock and unlock memory int mlock(const void *addr, size_t len) int munlock(const void *addr, size_t len) int mlockall(int flags) int munlockall(void) man page: https://man7.org/linux/man-pages/man2/mlock.2.html Implementation notes: Syscall mlockall() takes an argument that is composed of predefined values which represent flags that determine the type of locking operation that is to be performed. For that reason, a printing function "print_mlockall" was stated in file "strace.list". This printing function uses an already existing function "print_flags()" to print the "flags" argument. These flags are stated inside an array "mlockall_flags" that contains values of type "struct flags". These values are instantiated using an existing macro "FLAG_TARGET()" that crates aproppriate target flag values based on those defined in files '/target_syscall.h'. These target flag values were changed from "TARGET_MLOCKALL_MCL*" to "TARGET_MCL_*" so that they can be aproppriately set and recognised in "strace.c" with "FLAG_TARGET()". Value for "MCL_ONFAULT" was added in this patch. This value was also added in "syscall.c" in function "target_to_host_mlockall_arg()". Because this flag value was added in kernel version 4.4, it is enwrapped in an #ifdef directive (both in "syscall.c" and in "strace.c") as to support older kernel versions. The other syscalls have only primitive argument types, so the rest of the implementation was handled by stating an appropriate printing format in file "strace.list". Syscall mlock2() is not implemented in "syscall.c" and thus it's argument printing is not implemented in this patch. Signed-off-by: Filip Bozuta <Filip.Bozuta@syrmia.com> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20200811164553.27713-4-Filip.Bozuta@syrmia.com> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-08-21meson: linux-userMarc-André Lureau3-5/+6
The most interesting or most complicated part here is the syscall_nr.h generators. In order to keep the generation logic all in meson.build, I am adding to config_target the name of the .tbl file, and making the generated file syscall<SUFFIX>_nr.h for input file syscall<SUFFIX>.tbl. For architectures where the input file is not named syscall_nr.tbl, syscall_nr.h has to be a source file; it's just a forwarder for x86 (i386/x86_64), while for MIPS64 it chooses between N32 and N64 ABIs. Signed-off-by: Marc-André Lureau <marcandre.lureau@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2020-03-26linux-user/i386: Emulate x86_64 vsyscallsRichard Henderson1-0/+108
Notice the magic page during translate, much like we already do for the arm32 commpage. At runtime, raise an exception to return cpu_loop for emulation. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200213032223.14643-4-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-03-26linux-user/i386: Split out gen_signalRichard Henderson1-60/+33
This is a bit tidier than open-coding the 5 lines necessary to initialize the target_siginfo_t. In addition, this zeros the remaining bytes of the target_siginfo_t, rather than passing in garbage. Reviewed-by: Paolo Bonzini <pbonzini@redhat.com> Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20200213032223.14643-3-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-03-20linux-user: update syscall.tbl from linux 0bf999f9c5e7Laurent Vivier1-0/+2
Run scripts/update-syscalltbl.sh with linux commit 0bf999f9c5e7 Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <20200310103403.3284090-20-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-03-20linux-user, i386: add syscall table generation supportLaurent Vivier4-387/+475
Copy syscall_32.tbl and syscallhdr.sh from linux/arch/x86/kernel/syscalls v5.5 Update syscallhdr.sh to generate QEMU syscall_nr.h Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <20200310103403.3284090-15-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2020-03-20linux-user, x86_64, i386: cleanup TARGET_NR_arch_prctlLaurent Vivier1-2/+2
Define do_arch_prctl() for i386 and x86_64, but return -TARGET_ENOSYS for i386. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Taylor Simpson <tsimpson@quicinc.com> Message-Id: <20200310103403.3284090-14-laurent@vivier.eu> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06linux-user: Introduce cpu_clone_regs_parentRichard Henderson1-0/+4
We will need a target-specific hook for adjusting registers in the parent during clone. Add an empty inline function for each target, and invoke it from the proper places. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20191106113318.10226-11-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-11-06linux-user: Rename cpu_clone_regs to cpu_clone_regs_childRichard Henderson1-1/+2
We will need a target-specific hook for adjusting registers in the parent during clone. To avoid confusion, rename the one we have to make it clear it affects the child. At the same time, pass in the flags from the clone syscall. We will need them for correct behaviour for Sparc. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Message-Id: <20191106113318.10226-10-richard.henderson@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2019-06-12Supply missing header guardsMarkus Armbruster2-0/+10
Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190604181618.19980-5-armbru@redhat.com>
2019-06-12Include qemu-common.h exactly where neededMarkus Armbruster1-0/+1
No header includes qemu-common.h after this commit, as prescribed by qemu-common.h's file comment. Signed-off-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190523143508.25387-5-armbru@redhat.com> [Rebased with conflicts resolved automatically, except for include/hw/arm/xlnx-zynqmp.h hw/arm/nrf51_soc.c hw/arm/msf2-soc.c block/qcow2-refcount.c block/qcow2-cluster.c block/qcow2-cache.c target/arm/cpu.h target/lm32/cpu.h target/m68k/cpu.h target/mips/cpu.h target/moxie/cpu.h target/nios2/cpu.h target/openrisc/cpu.h target/riscv/cpu.h target/tilegx/cpu.h target/tricore/cpu.h target/unicore32/cpu.h target/xtensa/cpu.h; bsd-user/main.c and net/tap-bsd.c fixed up]
2019-06-10target/i386: Use env_cpu, env_archcpuRichard Henderson2-2/+2
Cleanup in the boilerplate that each target must define. Replace x86_env_get_cpu with env_archcpu. The combination CPU(x86_env_get_cpu) should have used ENV_GET_CPU to begin; use env_cpu now. Reviewed-by: Alistair Francis <alistair.francis@wdc.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
2018-11-12linux-user: Don't call gdb_handlesig() before queue_signal()Peter Maydell1-12/+4
The CPU main-loop routines for linux-user generally call gdb_handlesig() when they're about to queue a SIGTRAP signal. This is wrong, because queue_signal() will cause us to pend a signal, and process_pending_signals() will then call gdb_handlesig() itself. So the effect is that we notify gdb of the SIGTRAP, and then if gdb says "OK, continue with signal X" we will incorrectly notify gdb of the signal X as well. We don't do this double-notify for anything else, only SIGTRAP. Remove this unnecessary and incorrect code from all the targets except for nios2 (whose main loop is doing something different and broken, and will be handled in a separate patch). This bug only manifests if the user responds to the reported SIGTRAP using "signal SIGFOO" rather than "continue"; since the latter is the overwhelmingly common thing to do after a breakpoint most people won't have hit this. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20181019174958.26616-2-peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2018-06-04linux-user: move generic signal definitions to generic/signal.hLaurent Vivier1-0/+2
No code change. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180529194207.31503-10-laurent@vivier.eu>
2018-06-04linux-user: move get_sp_from_cpustate() to target_cpu.hLaurent Vivier3-8/+4
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>
2018-06-04linux-user: move generic fcntl definitions to generic/fcntl.hLaurent Vivier1-0/+11
add a per target target_fcntl.h and include the generic one from them No code change. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180529194207.31503-2-laurent@vivier.eu>
2018-05-25linux-user: move socket.h generic definitions to generic/sockbits.hLaurent Vivier1-0/+1
and include the file from architectures without specific definitions Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20180519092956.15134-5-laurent@vivier.eu>
2018-05-03linux-user: introduce target_sigsp() and target_save_altstack()Laurent Vivier1-9/+3
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: move i386/x86_64 cpu loop to i386 directoryLaurent Vivier1-0/+343
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 Vivier1-0/+26
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 Vivier1-5/+1
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 i386/x86_64 signal.c parts to i386 directoryLaurent Vivier2-0/+589
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: create a dummy per arch signal.cLaurent Vivier1-0/+18
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>
2018-02-25linux-user: Move CPU type name selection to a functionLaurent Vivier1-0/+14
Instead of a sequence of "#if ... #endif" move the selection to a function in linux-user/*/target_elf.h We can't add them in linux-user/*/target_cpu.h because we will need to include "elf.h" to use ELF flags with eflags, and including "elf.h" in "target_cpu.h" introduces some conflicts in elfload.c Suggested-by: Richard Henderson <richard.henderson@linaro.org> 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: <20180220173307.25125-2-laurent@vivier.eu>
2018-02-18linux-user: Implement ioctl cmd TIOCGPTPEERAndreas Schwab1-0/+1
With glibc 2.27 the openpty function prefers the TIOCGPTPEER ioctl. Signed-off-by: Andreas Schwab <schwab@suse.de> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <mvmbmhdosb9.fsf_-_@suse.de> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
2016-09-22linux-user: fix TARGET_NR_selectLaurent Vivier1-0/+1
TARGET_NR_select can have three different implementations: 1- to always return -ENOSYS microblaze, ppc, ppc64 -> TARGET_WANT_NI_OLD_SELECT 2- to take parameters from a structure pointed by arg1 (kernel sys_old_select) i386, arm, m68k -> TARGET_WANT_OLD_SYS_SELECT 3- to take parameters from arg[1-5] (kernel sys_select) x86_64, alpha, s390x, cris, sparc, sparc64 Some (new) architectures don't define NR_select, 4- but only NR__newselect with sys_select: mips, mips64, sh 5- don't define NR__newselect, and use pselect6 syscall: aarch64, openrisc, tilegx, unicore32 Reported-by: Timothy Pearson <tpearson@raptorengineering.com> Reported-by: Allan Wirth <awirth@akamai.com> Suggested-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-07-12linux-user: Clean up target_structs.h header guardsMarkus Armbruster1-2/+2
These headers all use TARGET_STRUCTS_H as header guard symbol. Reuse of the same guard symbol in multiple headers is okay as long as they cannot be included together. Since we can avoid guard symbol reuse easily, do so: use guard symbol $target_TARGET_STRUCTS_H for linux-user/$target/target_structs.h. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-07-12linux-user: Clean up target_signal.h header guardsMarkus Armbruster1-3/+3
These headers all use TARGET_SIGNAL_H as header guard symbol. Reuse of the same guard symbol in multiple headers is okay as long as they cannot be included together. Since we can avoid guard symbol reuse easily, do so: use guard symbol $target_TARGET_SIGNAL_H for linux-user/$target/target_signal.h. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-07-12linux-user: Clean up target_cpu.h header guardsMarkus Armbruster1-3/+3
These headers all use TARGET_CPU_H as header guard symbol. Reuse of the same guard symbol in multiple headers is okay as long as they cannot be included together. Since we can avoid guard symbol reuse easily, do so: use guard symbol $target_TARGET_CPU_H for linux-user/$target/target_cpu.h. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-07-12linux-user: Clean up target_syscall.h header guardsMarkus Armbruster1-3/+3
Some of them use guard symbol TARGET_SYSCALL_H, but we also have CRIS_SYSCALL_H, MICROBLAZE_SYSCALLS_H, TILEGX_SYSCALLS_H and __UC32_SYSCALL_H__. They all upset scripts/clean-header-guards.pl. Reuse of the same guard symbol TARGET_SYSCALL_H in multiple headers is okay as long as they cannot be included together. The script can't tell, so it warns. The script dislikes the other guard symbols, too. They don't match their file name (they should, to make guard collisions less likely), and __UC32_SYSCALL_H__ is a reserved identifier. Clean them all up: use guard symbol $target_TARGET_SYSCALL_H for linux-user/$target/target_sycall.h. Signed-off-by: Markus Armbruster <armbru@redhat.com> Reviewed-by: Richard Henderson <rth@twiddle.net>
2016-02-23linux-user: correct timerfd_create syscall numbersRiku Voipio1-1/+1
x86, m68k, ppc, sh4 and sparc failed to enable timerfd, because they didn't have timerfd_create system call defined. Instead QEMU defined timerfd syscall. Checking with kernel sources, it appears kernel developers reused timerfd syscall number with timerfd_create, presumably since no userspace called the old syscall number. Reported-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-02-23linux-user: sync syscall numbers with kernelRiku Voipio1-0/+27
Sync syscall numbers to match the linux v4.5-rc1 kernel. Reviewed-by: Laurent Vivier <laurent@vivier.eu> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2016-02-23build: [linux-user] Rename "syscall.h" to "target_syscall.h" in target ↵Lluís Vilanova1-0/+5
directories This fixes double-definitions in linux-user builds when using the UST tracing backend (which indirectly includes the system's "syscall.h"). Signed-off-by: Lluís Vilanova <vilanova@ac.upc.edu> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-08-22linux-user: Support target-to-host translation of mlockall argumentTom Musta1-0/+2
The argument to the mlockall system call is not necessarily the same on all platforms and thus may require translation prior to passing to the host. For example, PowerPC 64 bit platforms define values for MCL_CURRENT (0x2000) and MCL_FUTURE (0x4000) which are different from Intel platforms (0x1 and 0x2, respectively) Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-08-22linux-user: Minimum Sig Handler Stack Size for PPC64 ELF V2Tom Musta1-0/+1
The ELF V2 ABI for PPC64 defines MINSIGSTKSZ as 4096 bytes whereas it was 2048 previously. Signed-off-by: Tom Musta <tommusta@gmail.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-03-10linux-user: set minimum kernel version to 2.6.32Riku Voipio1-0/+1
Popular glibc based distributions[1] require minimum 2.6.32 as kernel version. For some targets 2.6.18 would be enough, but dropping so low would mean some suboptimal system calls could get used. Set the minimum kernel advertized to 2.6.32 for all architectures but aarch64 to ensure working qemu linux-user in case host kernel is older. [1] https://bugs.launchpad.net/ubuntu/+source/eglibc/+bug/921078 Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2014-02-18linux-user: sync syscall numbers upto 3.13Riku Voipio1-0/+6
All others updated except unicore, which doesn't look right to begin with. Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2013-11-29linux-user: create target_structs header to place ipc_perm and shmid_dsPetar Jovanovic1-0/+58
Creating target_structs header in linux-user/$arch/ and making target_ipc_perm and target_shmid_ds its first inhabitants. The struct defintions may/should be further fine-tuned by arch maintainers. Signed-off-by: Petar Jovanovic <petar.jovanovic@imgtec.com> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2013-07-22linux-user: Enable NPTL for x86-64Peter Maydell1-0/+7
Add x86-64 implementation of cpu_set_tls() (like the kernel, we just have to call do_arch_prctl() to set FS); this allows us to enable NPTL. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2013-07-22linux-user: Add i386 TLS setterAlexander Graf1-2/+10
We can easily set the TLS on i386. Add code to do so. Signed-off-by: Alexander Graf <agraf@suse.de> [PMM: also remove "target_nptl=no" line from configure, for consistency with other patches in this series] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2013-07-22linux-user: Clean up handling of clone() argument orderPeter Maydell1-0/+2
Linux manages to have three separate orderings of the arguments to the clone() syscall on different architectures. In the kernel these are selected via CONFIG_CLONE_BACKWARDS and CONFIG_CLONE_BACKWARDS2. Clean up our implementation of this to use similar #define names rather than a TARGET_* ifdef ladder. This includes behaviour changes fixing bugs on cris, x86-64, m68k, openrisc and unicore32. cris had explicit but wrong handling; the others were just incorrectly using QEMU's default, which happened to be the equivalent of CONFIG_CLONE_BACKWARDS. (unicore32 appears to be broken in the mainline kernel in that it tries to use arg3 for both parent_tidptr and newtls simultaneously -- we don't attempt to emulate this bug...) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
2013-07-09linux-user: Move cpu_clone_regs() and cpu_set_tls() into linux-userPeter Maydell1-0/+33
The functions cpu_clone_regs() and cpu_set_tls() are not purely CPU related -- they are specific to the TLS ABI for a a particular OS. Move them into the linux-user/ tree where they belong. target-lm32 had entirely unused implementations, since it has no linux-user target; just drop them. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-12-08linux-user: Merge pread/pwrite into pread64/pwrite64Peter Maydell1-2/+2
The Linux syscalls underlying pread() and pwrite() take a 64 bit offset on all architectures, even if some of them name the syscall "pread/pwrite" rather than "pread64/pwrite64" for historical reasons. So move the four QEMU target architectures (arm, i386, sparc, unicore32) which were defining TARGET_NR_pread/pwrite to define TARGET_NR_pread64/pwrite64 instead, and drop the TARGET_NR_pread/pwrite implementation code completely. (Based on examination of the kernel sources for the four architectures this patch affects.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-07-11linux-user: Add syscall numbers from kernel 2.6.39.2Peter Maydell1-0/+12
Add syscall numbers for new syscall numbers; this brings us into line with Linux 2.6.39.2. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
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