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2010-01-19add assertions about env->current_tbPaolo Bonzini1-1/+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>
2010-01-19clean up env->current_tbPaolo Bonzini1-0/+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>
2010-01-19fix wrong indentationPaolo Bonzini1-3/+1
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-19kill regs_to_env and env_to_regsPaolo Bonzini1-9/+0
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2010-01-08sparc64: interrupt trap handlingIgor V. Kovalenko1-14/+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>
2009-12-05S/390 CPU fake emulationAlexander Graf1-0/+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>
2009-11-07PPC: rename cpu_ppc_reset to cpu_reset for consistencyBlue Swirl1-1/+1
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-10-18bsd-user: FreeBSD updateJuergen Lock1-2/+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>
2009-09-12Fix sys-queue.h conflict for goodBlue Swirl1-1/+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>
2009-08-24cleanup cpu-exec.c, part 0/N: consolidate handle_cpu_signalNathan Froyd1-409/+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>
2009-08-24Unbreak large mem support by removing kqemuAnthony Liguori1-37/+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>
2009-08-22sparc32 remove an unnecessary cpu irq setBlue Swirl1-3/+0
Signed-off-by: Artyom Tarasenko <atar4qemu@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-07-27rename DEBUG_EXEC to CONFIG_DEBUG_EXECJuan Quintela1-3/+3
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-27change HOST_SOLARIS to CONFIG_SOLARIS{_VERSION}Juan Quintela1-5/+5
Signed-off-by: Juan Quintela <quintela@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2009-07-16Update to a hopefully more future proof FSF addressBlue Swirl1-2/+1
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-07-12sparc64: trap handling correctionsIgor Kovalenko1-2/+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
2009-07-09QEMU: MCE: Add MCE simulation to qemu/tcgHuang Ying1-0/+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>
2009-06-22Handle init/sipi in a main cpu exec loop. (v2)Gleb Natapov1-1/+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>
2009-05-26microblaze: linux-user support.Edgar E. Iglesias1-1/+67
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2009-04-25Recognize V9 stores and CAS accesses as writesBlue Swirl1-0/+12
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2009-04-24qemu: per-arch cpu_has_work (Marcelo Tosatti)aliguori1-0/+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
2009-04-19kqemu: merge CONFIG_KQEMU and USE_KQEMUblueswir11-3/+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
2009-04-10BSD user: add support for OpenBSD/amd64 hostblueswir11-11/+19
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7066 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-10BSD user: add support for OpenBSD/i386 hostblueswir11-1/+12
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@7065 c046a42c-6fe2-441c-8c8c-71466251a162
2009-04-04Make i386-softmmu boot on Sparc hostblueswir11-0/+10
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6971 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-16Delete some unused macros detected with -Wp,-Wunused-macros useblueswir11-1/+0
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@6856 c046a42c-6fe2-441c-8c8c-71466251a162
2009-03-06Fix race condition on access to env->interrupt_requestaurel321-8/+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
2009-01-15global s/loglevel & X/qemu_loglevel_mask(X)/ (Eduardo Habkost)aliguori1-1/+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
2009-01-15Convert references to logfile/loglevel to use qemu_log*() macrosaliguori1-19/+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
2009-01-14Get rid of user_mode_onlyaurel321-2/+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
2009-01-14Remove all traces of __powerpc__malc1-1/+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
2009-01-04Update FSF address in GPL/LGPL boilerplateaurel321-1/+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
2008-12-20Fix remaining compiler warnings for mips targets.ths1-1/+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
2008-12-19When -icount is used and a TB is recompiled due to an IO access pbrook1-0/+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
2008-12-13target-i386: SVM: acknowledge interrupt only after it is takenaurel321-1/+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
2008-12-11target-ppc: rework exception codeaurel321-1/+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
2008-12-05Attached patch make cpu-exec.c compile on NetBSD.blueswir11-4/+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
2008-11-25Use sys-queue.h for break/watchpoint managment (Jan Kiszka)aliguori1-1/+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
2008-11-22target-ppc: convert exceptions generation to TCGaurel321-1/+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
2008-11-18Add debug exception hook (Jan Kiszka)aliguori1-0/+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
2008-11-18Introduce BP_WATCHPOINT_HIT flag (Jan Kiszka)aliguori1-0/+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
2008-11-18Refactor translation block CPU state handling (Jan Kiszka)aliguori1-61/+2
This patch refactors the way the CPU state is handled that is associated with a TB. The basic motivation is to move more arch specific code out of generic files. Specifically the long #ifdef clutter in tb_find_fast() has to be overcome in order to avoid duplicating it for the gdb watchpoint fixes (patch "Restore pc on watchpoint hits"). 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@5736 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-18Convert CPU_PC_FROM_TB to static inline (Jan Kiszka)aliguori1-2/+2
as macros should be avoided when 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@5735 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-17TCG variable type checking.pbrook1-3/+3
Signed-off-by: Paul Brook <paul@codesourcery.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5729 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-10KVM: simplify kvm_cpu_exec hookaliguori1-10/+2
We don't need to use cpu_loop_exit() because we never use the condition codes so everything can be folded into a single case. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5669 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-06Fix interrupt exclusion via SSTEP_NOIRQmalc1-2/+8
Commit #5620 revealed an issue of the SSTEP_NOIRQ masking that was applied on all interrupt sources (including internal ones) when single stepping through the guest. Due to that commit, we now ended up in an infinite loop when CPU_INTERRUPT_EXIT was pending on SSTEP resume. That was due to #5620 eating all TBs while CPU_INTERRUPT_EXIT is pending, but SSTEP_NOIRQ preventing CPU_INTERRUPT_EXIT to be processed. What SSTEP_NOIRQ should actually do is to block the delivery of all external, guest visible interrupts. With the fix below applied, single stepping now works again. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5643 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-06Remove unused reg_T2 definitionaurel321-4/+0
No longer used, remove it. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5641 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-05Add KVM support to QEMUaliguori1-0/+14
This patch adds very basic KVM support. KVM is a kernel module for Linux that allows userspace programs to make use of hardware virtualization support. It current supports x86 hardware virtualization using Intel VT-x or AMD-V. It also supports IA64 VT-i, PPC 440, and S390. This patch only implements the bare minimum support to get a guest booting. It has very little impact the rest of QEMU and attempts to integrate nicely with the rest of QEMU. Even though this implementation is basic, it is significantly faster than TCG. Booting and shutting down a Linux guest: w/TCG: 1:32.36 elapsed 84% CPU w/KVM: 0:31.14 elapsed 59% CPU Right now, KVM is disabled by default and must be explicitly enabled with -enable-kvm. We can enable it by default later when we have had better testing. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com> git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5627 c046a42c-6fe2-441c-8c8c-71466251a162
2008-11-04Add safety net against potential infinite loopmalc1-0/+8
cpu_interrupt might be called while translating the TB, but before it is linked into a potentially infinite loop and becomes env->current_tb. Currently this can (and does) cause huge problems only when using dyntick clock, with other (periodic) clocks host_alarm_handler will eventually be executed resulting in a call to cpu_interrupt which will reset the recursion of running TB and the damage is "only" latency. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5620 c046a42c-6fe2-441c-8c8c-71466251a162
2008-10-26Preliminary BSD user emulator supportblueswir11-0/+16
git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@5544 c046a42c-6fe2-441c-8c8c-71466251a162
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