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* linux-user: Don't call gdb_handlesig() before queue_signal()Peter Maydell2018-11-121-12/+4Star
| | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* linux-user: Report error message on stderr, rather than stdoutPhilippe Mathieu-Daudé2018-07-091-3/+3
| | | | | | | | | | | | Code change produced with: git ls-files linux-user | \ xargs sed -i -E 's/(\s+)printf\s*\(("Unhandled.*)\);/\1fprintf(stderr, \2);/g' Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Message-Id: <20180706155127.7483-4-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: Do not report "syscall not implemented" by defaultPhilippe Mathieu-Daudé2018-07-091-2/+2
| | | | | | | | | | | | | This can still be reported using the "-d unimp" command line option. Code change produced with: git ls-files linux-user | \ xargs sed -i -E 's/fprintf\(stderr,\s?(".*not implemented\\n")\);/qemu_log_mask(LOG_UNIMP, \1);/g' Signed-off-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Message-Id: <20180706155127.7483-3-f4bug@amsat.org> Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user/microblaze: Fix typo in accept4 syscallRichard Henderson2018-06-111-1/+1
| | | | | | | | | Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org> Reviewed-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180607184844.30126-4-richard.henderson@linaro.org> [lv: replace tabs by spaces] Signed-off-by: Laurent Vivier <laurent@vivier.eu>
* linux-user: move generic signal definitions to generic/signal.hLaurent Vivier2018-06-041-0/+2
| | | | | | | No code change. Signed-off-by: Laurent Vivier <laurent@vivier.eu> Message-Id: <20180529194207.31503-10-laurent@vivier.eu>
* linux-user: move get_sp_from_cpustate() to target_cpu.hLaurent Vivier2018-06-043-8/+4Star
| | | | | | | | | 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>
* linux-user: move generic fcntl definitions to generic/fcntl.hLaurent Vivier2018-06-041-0/+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>
* target-microblaze: Make special registers 64-bitEdgar E. Iglesias2018-05-291-2/+2
| | | | | | | | Extend special registers to 64-bits. This is in preparation for MFSE/MTSE, moves to and from extended special registers. Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
* linux-user: move socket.h generic definitions to generic/sockbits.hLaurent Vivier2018-05-251-0/+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>
* linux-user: introduce target_sigsp() and target_save_altstack()Laurent Vivier2018-05-031-3/+1Star
| | | | | | Signed-off-by: Laurent Vivier <laurent@vivier.eu> Reviewed-by: Richard Henderson <richard.henderson@linaro.org> Message-Id: <20180411192347.30228-1-laurent@vivier.eu>
* linux-user: move microblaze cpu loop to microblaze directoryLaurent Vivier2018-04-301-0/+150
| | | | | | | | | | 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>
* linux-user: create a dummy per arch cpu_loop.cLaurent Vivier2018-04-301-0/+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>
* linux-user: define TARGET_ARCH_HAS_SETUP_FRAMELaurent Vivier2018-04-301-5/+1Star
| | | | | | | | | | | | | 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>
* linux-user: move microblaze signal.c parts to microblaze directoryLaurent Vivier2018-04-302-1/+235
| | | | | | | | | | | 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>
* linux-user: create a dummy per arch signal.cLaurent Vivier2018-04-301-0/+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>
* linux-user: fix microblaze get_sp_from_cpustate()Laurent Vivier2018-04-101-1/+1
| | | | | | | 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>
* linux-user: Move CPU type name selection to a functionLaurent Vivier2018-02-251-0/+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>
* linux-user: Implement ioctl cmd TIOCGPTPEERAndreas Schwab2018-02-181-0/+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>
* linux-user: fix TARGET_NR_selectLaurent Vivier2016-09-221-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | 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>
* linux-user: Clean up target_structs.h header guardsMarkus Armbruster2016-07-121-2/+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>
* linux-user: Clean up target_signal.h header guardsMarkus Armbruster2016-07-121-3/+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>
* linux-user: Clean up target_cpu.h header guardsMarkus Armbruster2016-07-121-2/+2
| | | | | | | | | | | | 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>
* linux-user: Clean up target_syscall.h header guardsMarkus Armbruster2016-07-121-2/+2
| | | | | | | | | | | | | | | | | | | | 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>
* linux-user: Support for restarting system calls for Microblaze targetsTimothy E Baldwin2016-05-271-0/+1
| | | | | | | | | | | | | | | | | | | | | | Update the Microblaze main loop and sigreturn code: * on TARGET_ERESTARTSYS, wind guest PC backwards to repeat syscall insn * set all guest CPU state within signal.c code on sigreturn * handle TARGET_QEMU_ESIGRETURN in the main loop as the indication that the main loop should not touch any guest CPU state Note that this in passing fixes a bug where we were corrupting the guest r[3] on sigreturn with the guest's r[10] because do_sigreturn() was returning env->regs[10] but the register for syscall return values is env->regs[3]. Signed-off-by: Timothy Edward Baldwin <T.E.Baldwin99@members.leeds.ac.uk> Message-id: 1441497448-32489-11-git-send-email-T.E.Baldwin99@members.leeds.ac.uk Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> [PMM: Commit message tweaks; drop TARGET_USE_ERESTARTSYS define; drop whitespace changes] Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: sync syscall numbers with kernelRiku Voipio2016-02-231-0/+8
| | | | | | | 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>
* build: [linux-user] Rename "syscall.h" to "target_syscall.h" in target ↵Lluís Vilanova2016-02-231-0/+0
| | | | | | | | | | | 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>
* linux-user: Support target-to-host translation of mlockall argumentTom Musta2014-08-221-0/+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>
* linux-user: Minimum Sig Handler Stack Size for PPC64 ELF V2Tom Musta2014-08-221-0/+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>
* linux-user: set minimum kernel version to 2.6.32Riku Voipio2014-03-101-1/+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>
* linux-user: sync syscall numbers upto 3.13Riku Voipio2014-02-181-1/+6
| | | | | | | All others updated except unicore, which doesn't look right to begin with. Signed-off-by: Riku Voipio <riku.voipio@linaro.org>
* linux-user: create target_structs header to place ipc_perm and shmid_dsPetar Jovanovic2013-11-291-0/+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>
* linux-user: Clean up handling of clone() argument orderPeter Maydell2013-07-221-0/+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>
* linux-user: Move cpu_clone_regs() and cpu_set_tls() into linux-userPeter Maydell2013-07-091-0/+35
| | | | | | | | | | | | | 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>
* janitor: add guards to headersPaolo Bonzini2012-12-191-0/+6
| | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
* linux-user: Add syscall numbers from kernel 2.6.39.2Peter Maydell2011-07-111-2/+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>
* Revert "Get rid of _t suffix"Anthony Liguori2009-10-011-1/+1
| | | | | | | | | | | | In the very least, a change like this requires discussion on the list. The naming convention is goofy and it causes a massive merge problem. Something like this _must_ be presented on the list first so people can provide input and cope with it. This reverts commit 99a0949b720a0936da2052cb9a46db04ffc6db29. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Get rid of _t suffixmalc2009-10-011-1/+1
| | | | | | | Some not so obvious bits, slirp and Xen were left alone for the time being. Signed-off-by: malc <av1474@comtv.ru>
* microblaze: Add syscall, signal and termbits defs for linux-user.Edgar E. Iglesias2009-05-264-0/+656
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
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