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* declare saved_env_reg as volatilePaolo Bonzini2010-02-231-1/+1
| | | | | | | | | | This ensures that the compiler does not move it away from the "env = env1;" assignment. Fixes a miscompilation on gcc 4.4, reported by Jay Foad. Cc: <jay.foad@gmail.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Merge remote branch 'qemu-kvm/uq/master' into stagingAnthony Liguori2010-02-221-5/+7
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| * kvm: Fix eflags corruption in kvm modeJan Kiszka2010-02-211-5/+7
| | | | | | | | | | | | | | | | | | | | | | This should explain a lot of the weird breakages of upstream KVM we've seen recently (actually we should have seen it much earlier): Stop translating eflags into TCG format when in kvm mode as we never translate it back and rather sync this broken state into the kernel. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Avi Kivity <avi@redhat.com>
* | Add FreeBSD/ppc host ucontext definitions.Juergen Lock2010-02-201-0/+18
| | | | | | | | | | | | | | Submitted by: Andreas Tobler <andreast@fgznet.ch> Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de> Signed-off-by: malc <av1474@comtv.ru>
* | get rid of hostregs_helper.hPaolo Bonzini2010-02-181-6/+9
|/ | | | | | | | | Since b567b38 (target-arm: remove T0 and T1, 2009-10-16) the only global register that is used is AREG0, so the complexity of hostregs_helper.h is unused. Use regular assignments and a compiler optimization barrier. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* cris: Prepare for CRISv10.Edgar E. Iglesias2010-02-151-1/+2
| | | | | | | | * Add prefix flag and special reg. * Add interrupt lockout. * Add CC_OP_MSTEP. Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
* avoid unreachable statement after breakPaolo Bonzini2010-01-191-1/+1
| | | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* remove assertionsPaolo Bonzini2010-01-191-4/+0
| | | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* change while to ifPaolo Bonzini2010-01-191-7/+3
| | | | | | | | The while loop will be executed exactly 0 or 1 times, depending on env->exit_request. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* add assertions about env->current_tbPaolo Bonzini2010-01-191-1/+5
| | | | | | | | | By virtue of the previous patch env->current_tb will always be NULL at the top of cpu_exec's outermost for loop, and at the end of the innermost while loop. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* clean up env->current_tbPaolo Bonzini2010-01-191-0/+2
| | | | | | | | | There are three paths from the innermost while loop of cpu_exec to the top of the outermost for loop. Two do not reset env->current_tb. Fix this. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* fix wrong indentationPaolo Bonzini2010-01-191-3/+1
| | | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* kill regs_to_env and env_to_regsPaolo Bonzini2010-01-191-9/+0
| | | | | Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* sparc64: interrupt trap handlingIgor V. Kovalenko2010-01-081-14/+14
| | | | | | | | | | | | | | cpu_check_irqs - handle SOFTINT register TICK and STICK timer bits - only check interrupt levels greater than PIL value - handle preemption by higher level traps cpu_exec - handle CPU_INTERRUPT_HARD only if interrupts are enabled - PIL 15 is not special level on sparcv9 Signed-off-by: Igor V. Kovalenko <igor.v.kovalenko@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* S/390 CPU fake emulationAlexander Graf2009-12-051-0/+2
| | | | | | | | | | | | Because Qemu currently requires a TCG target to exist and there are quite some useful helpers here to lay the groundwork for out KVM target, let's create a stub TCG emulation target for S390X CPUs. This is required to make tcg happy. The emulation target itself won't work though. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
* PPC: rename cpu_ppc_reset to cpu_reset for consistencyBlue Swirl2009-11-071-1/+1
| | | | Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* bsd-user: FreeBSD updateJuergen Lock2009-10-181-2/+25
| | | | | | | | basic FreeBSD sysarch(2) handling fixed syscall errno return Signed-off-by: Juergen Lock <nox@jelal.kn-bremen.de> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* Fix sys-queue.h conflict for goodBlue Swirl2009-09-121-1/+1
| | | | | | | | | | | | | | | Problem: Our file sys-queue.h is a copy of the BSD file, but there are some additions and it's not entirely compatible. Because of that, there have been conflicts with system headers on BSD systems. Some hacks have been introduced in the commits 15cc9235840a22c289edbe064a9b3c19c5f49896, f40d753718c72693c5f520f0d9899f6e50395e94, 96555a96d724016e13190b28cffa3bc929ac60dc and 3990d09adf4463eca200ad964cc55643c33feb50 but the fixes were fragile. Solution: Avoid the conflict entirely by renaming the functions and the file. Revert the previous hacks. Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* cleanup cpu-exec.c, part 0/N: consolidate handle_cpu_signalNathan Froyd2009-08-241-409/+6
| | | | | | | | | | | | | | | handle_cpu_signal is very nearly copy-paste code for each target, with a few minor variations. This patch sets up appropriate defaults for a generic handle_cpu_signal and provides overrides for particular targets that did things differently. Fixing things like the persistent (XXX: use sigsetjmp) should now become somewhat easier. Previous comments on this patch suggest that the "activate soft MMU for this block" comments refer to defunct functionality. I have removed such blocks for the appropriate targets in this patch. Signed-off-by: Nathan Froyd <froydnj@codesourcery.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Unbreak large mem support by removing kqemuAnthony Liguori2009-08-241-37/+1
| | | | | | | | | | | | | | | | | | | | | | kqemu introduces a number of restrictions on the i386 target. The worst is that it prevents large memory from working in the default build. Furthermore, kqemu is fundamentally flawed in a number of ways. It relies on the TSC as a time source which will not be reliable on a multiple processor system in userspace. Since most modern processors are multicore, this severely limits the utility of kqemu. kvm is a viable alternative for people looking to accelerate qemu and has the benefit of being supported by the upstream Linux kernel. If someone can implement work arounds to remove the restrictions introduced by kqemu, I'm happy to avoid and/or revert this patch. N.B. kqemu will still function in the 0.11 series but this patch removes it from the 0.12 series. Paul, please Ack or Nack this patch. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* sparc32 remove an unnecessary cpu irq setBlue Swirl2009-08-221-3/+0
| | | | | Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* rename DEBUG_EXEC to CONFIG_DEBUG_EXECJuan Quintela2009-07-271-3/+3
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* change HOST_SOLARIS to CONFIG_SOLARIS{_VERSION}Juan Quintela2009-07-271-5/+5
| | | | | Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Update to a hopefully more future proof FSF addressBlue Swirl2009-07-161-2/+1
| | | | Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* sparc64: trap handling correctionsIgor Kovalenko2009-07-121-2/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | On Sun, Jul 12, 2009 at 12:09 PM, Blue Swirl<blauwirbel@gmail.com> wrote: > On 7/12/09, Igor Kovalenko <igor.v.kovalenko@gmail.com> wrote: >> Good trap handling is required to process interrupts. >>  This patch fixes the following: >> >>  - sparc64 has no wim register >>  - sparc64 has no psret register, use IE bit of pstate >>   extract IE checking code to cpu_interrupts_enabled >>  - alternate globals are not available if cpu has GL feature >>   in this case bit AG of pstate is constant zero >>  - write to pstate must actually write pstate >>   even if cpu has GL feature >> >>  Also timer interrupt is handled using do_interrupt. > > A bit too much for one patch. Please also remove the code instead of > commenting out. I now excluded timer interrupt related part. To my mind other changes are essentially tied together. > PUT_PSR for Sparc64 needs CC_OP = CC_OP_FLAGS; like Sparc32. Fixed, please find attached the updated version. -- Kind regards, Igor V. Kovalenko
* QEMU: MCE: Add MCE simulation to qemu/tcgHuang Ying2009-07-091-0/+4
| | | | | | | | | | | - MCE features are initialized when VCPU is intialized according to CPUID. - A monitor command "mce" is added to inject a MCE. - A new interrupt mask: CPU_INTERRUPT_MCE is added to inject the MCE. aliguori: fix build for linux-user Signed-off-by: Huang Ying <ying.huang@intel.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* Handle init/sipi in a main cpu exec loop. (v2)Gleb Natapov2009-06-221-1/+8
| | | | | | | | | | | | | This should fix compilation problem in case of CONFIG_USER_ONLY. Currently INIT/SIPI is handled in the context of CPU that sends IPI. This patch changes this to handle them like all other events in a main cpu exec loop. When KVM will gain thread per vcpu capability it will be much more clear to handle those event by cpu thread itself and not modify one cpu's state from the context of the other. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
* microblaze: linux-user support.Edgar E. Iglesias2009-05-261-1/+67
| | | | Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
* Recognize V9 stores and CAS accesses as writesBlue Swirl2009-04-251-0/+12
| | | | Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
* qemu: per-arch cpu_has_work (Marcelo Tosatti)aliguori2009-04-241-0/+5
| | | | | | | | | | Blue Swirl: fix Sparc32 breakage Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7238 c046a42c-6fe2-441c-8c8c-71466251a162
* kqemu: merge CONFIG_KQEMU and USE_KQEMUblueswir12009-04-191-3/+3
| | | | | | | | | | Basically a recursive ":%s/USE_KQEMU/CONFIG_KQEMU/g". Signed-off-by: Paul Bolle <pebolle@tiscali.nl> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7189 c046a42c-6fe2-441c-8c8c-71466251a162
* BSD user: add support for OpenBSD/amd64 hostblueswir12009-04-101-11/+19
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7066 c046a42c-6fe2-441c-8c8c-71466251a162
* BSD user: add support for OpenBSD/i386 hostblueswir12009-04-101-1/+12
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7065 c046a42c-6fe2-441c-8c8c-71466251a162
* Make i386-softmmu boot on Sparc hostblueswir12009-04-041-0/+10
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6971 c046a42c-6fe2-441c-8c8c-71466251a162
* Delete some unused macros detected with -Wp,-Wunused-macros useblueswir12009-03-161-1/+0
| | | | git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6856 c046a42c-6fe2-441c-8c8c-71466251a162
* Fix race condition on access to env->interrupt_requestaurel322009-03-061-8/+8
| | | | | | | | | | | | | | | | | | | env->interrupt_request is accessed as the bit level from both main code and signal handler, making a race condition possible even on CISC CPU. This causes freeze of QEMU under high load when running the dyntick clock. The patch below move the bit corresponding to CPU_INTERRUPT_EXIT in a separate variable, declared as volatile sig_atomic_t, so it should be work even on RISC CPU. We may want to move the cpu_interrupt(env, CPU_INTERRUPT_EXIT) case in its own function and get rid of CPU_INTERRUPT_EXIT. That can be done later, I wanted to keep the patch short for easier review. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6728 c046a42c-6fe2-441c-8c8c-71466251a162
* global s/loglevel & X/qemu_loglevel_mask(X)/ (Eduardo Habkost)aliguori2009-01-151-1/+1
| | | | | | | | | | | | These are references to 'loglevel' that aren't on a simple 'if (loglevel & X) qemu_log()' statement. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6340 c046a42c-6fe2-441c-8c8c-71466251a162
* Convert references to logfile/loglevel to use qemu_log*() macrosaliguori2009-01-151-19/+14
| | | | | | | | | | | | This is a large patch that changes all occurrences of logfile/loglevel global variables to use the new qemu_log*() macros. Signed-off-by: Eduardo Habkost <ehabkost@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6338 c046a42c-6fe2-441c-8c8c-71466251a162
* Get rid of user_mode_onlyaurel322009-01-141-2/+4
| | | | | | Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6305 c046a42c-6fe2-441c-8c8c-71466251a162
* Remove all traces of __powerpc__malc2009-01-141-1/+1
| | | | | | | | According to $GCC/gcc/config/rs6000/rs6000-c.c _ARCH_PPC is the ubiquitous define which should be used to test whether gcc targets PowerPC, on 64bit platforms _ARCH_PPC64 will be also defined. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6301 c046a42c-6fe2-441c-8c8c-71466251a162
* Update FSF address in GPL/LGPL boilerplateaurel322009-01-041-1/+1
| | | | | | | | | | The attached patch updates the FSF address in the GPL/LGPL boilerplate in most GPL/LGPLed files, and also in COPYING.LIB. Signed-off-by: Stuart Brady <stuart.brady@gmail.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6162 c046a42c-6fe2-441c-8c8c-71466251a162
* Fix remaining compiler warnings for mips targets.ths2008-12-201-1/+1
| | | | | | | Signed-off-by: Stefan Weil <weil@mail.berlios.de> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6111 c046a42c-6fe2-441c-8c8c-71466251a162
* When -icount is used and a TB is recompiled due to an IO access pbrook2008-12-191-0/+1
| | | | | | | | | | | | | | | | shortly after an IRQ has been raised, env->exception_index will still be set to EXCP_IRQ when cpu_io_recompile calls cpu_resume_from_signal. This causes qemu to repeat the IRQ trap, with disasterous consequences. I suspect this "works" most of the time because linux tends to drop back to svc mode before doing actual IRQ processing, and be fairly tolerant of spurious IRQ traps. Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6100 c046a42c-6fe2-441c-8c8c-71466251a162
* target-i386: SVM: acknowledge interrupt only after it is takenaurel322008-12-131-1/+1
| | | | | | | | | | | | | | | | | | | SVM specifies that the V_IRQ mask is only to be removed, if the interrupt that is to be delivered actually is delivered. As of the SVM rewrite, this mask is always unmasked when the main cpu loop is processed, leaving a corner case where calling the interrupt handler causes a #PF. In that case (booting Linux / starting gfxboot) the current implementation tells the VMM the interrupt is taken, even though it is not. This patch modifies the VIRQ unmasking to occur after do_interrupt, making gfxboot work again. Signed-off-by: Alexander Graf <agraf@suse.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6008 c046a42c-6fe2-441c-8c8c-71466251a162
* target-ppc: rework exception codeaurel322008-12-111-1/+1
| | | | | | | | ... also remove two warnings. Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5989 c046a42c-6fe2-441c-8c8c-71466251a162
* Attached patch make cpu-exec.c compile on NetBSD.blueswir12008-12-051-4/+19
| | | | | | | Signed-off-by: Christoph Egger <Christoph.Egger@amd.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5887 c046a42c-6fe2-441c-8c8c-71466251a162
* Use sys-queue.h for break/watchpoint managment (Jan Kiszka)aliguori2008-11-251-1/+1
| | | | | | | | | | | | | This switches cpu_break/watchpoint_* to TAILQ wrappers, simplifying the code and also fixing a use after release issue in cpu_break/watchpoint_remove_all. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5799 c046a42c-6fe2-441c-8c8c-71466251a162
* target-ppc: convert exceptions generation to TCGaurel322008-11-221-1/+1
| | | | | | Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5772 c046a42c-6fe2-441c-8c8c-71466251a162
* Add debug exception hook (Jan Kiszka)aliguori2008-11-181-0/+13
| | | | | | | | | | | | This patch allows to hook into the delivery of EXCP_DEBUG so that other use beyond guest debugging becomes possible. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5745 c046a42c-6fe2-441c-8c8c-71466251a162
* Introduce BP_WATCHPOINT_HIT flag (Jan Kiszka)aliguori2008-11-181-0/+11
| | | | | | | | | | | | | When one watchpoint is hit, others might have triggered as well. To support users of the watchpoint API which need to detect such cases, the BP_WATCHPOINT_HIT flag is introduced and maintained. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5744 c046a42c-6fe2-441c-8c8c-71466251a162
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