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2011-04-01Correct ppc popcntb logic, implement popcntw and popcntdDavid Gibson
qemu already includes support for the popcntb instruction introduced in POWER5 (although it doesn't actually allow you to choose POWER5). However, the logic is slightly incorrect: it will generate results truncated to 32-bits when the CPU is in 32-bit mode. This is not normal for powerpc - generally arithmetic instructions on a 64-bit powerpc cpu will generate full 64 bit results, it's just that only the low 32 bits will be significant for condition codes. This patch corrects this nit, which actually simplifies the code slightly. In addition, this patch implements the popcntw and popcntd instructions added in POWER7, in preparation for allowing POWER7 as an emulated CPU. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-04-01Implement missing parts of the logic for the POWER PURRDavid Gibson
The PURR (Processor Utilization Resource Register) is a register found on recent POWER CPUs. The guts of implementing it at least enough to get by are already present in qemu, however some of the helper functions needed to actually wire it up are missing. This patch adds the necessary glue, so that the PURR can be wired up when we implement newer POWER CPU targets which include it. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-04-01Implement PowerPC slbmfee and slbmfev instructionsDavid Gibson
For a 64-bit PowerPC target, qemu correctly implements translation through the segment lookaside buffer. Likewise it supports the slbmte instruction which is used to load entries into the SLB. However, it does not emulate the slbmfee and slbmfev instructions which read SLB entries back into registers. Because these are only occasionally used in guests (mostly for debugging) we get away with it. However, given the recent SLB cleanups, it becomes quite easy to implement these, and thereby allow, amongst other things, a guest Linux to use xmon's command to dump the SLB. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-04-01Add a hook to allow hypercalls to be emulated on PowerPCDavid Gibson
PowerPC and POWER chips since the POWER4 and 970 have a special hypervisor mode, and a corresponding form of the system call instruction which traps to the hypervisor. qemu currently has stub implementations of hypervisor mode. That is, the outline is there to allow qemu to run a PowerPC hypervisor under emulation. There are a number of details missing so this won't actually work at present, but the idea is there. What there is no provision at all, is for qemu to instead emulate the hypervisor itself. That is to have hypercalls trap into qemu and their result be emulated from qemu, rather than running hypervisor code within the emulated system. Hypervisor hardware aware KVM implementations are in the works and it would be useful for debugging and development to also allow full emulation of the same para-virtualized guests as such a KVM. Therefore, this patch adds a hook which will allow a machine to set up emulation of hypervisor calls. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-04-01Allow qemu_devtree_setprop() to take arbitrary valuesDavid Gibson
Currently qemu_devtree_setprop() expects the new property value to be given as a uint32_t *. While property values consisting of u32s are common, in general they can have any bytestring value. Therefore, this patch alters the function to take a void * instead, allowing callers to easily give anything as the property value. Signed-off-by: David Gibson <david@gibson.dropbear.id.au> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-04-01Clean up PowerPC SLB handling codeDavid Gibson
Currently the SLB information when emulating a PowerPC 970 is storeed in a structure with the unhelpfully named fields 'tmp' and 'tmp64'. While the layout in these fields does match the description of the SLB in the architecture document, it is not convenient either for looking up the SLB, or for emulating the slbmte instruction. This patch, therefore, reorganizes the SLB entry structure to be divided in the the "ESID related" and "VSID related" fields as they are divided in instructions accessing the SLB. In addition to making the code smaller and more readable, this will make it easier to implement for the 1TB segments used in more recent PowerPC chips. Signed-off-by: David Gibson <dwg@au1.ibm.com> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-04-01target-ppc: ext32u instead of andi with constantAurelien Jarno
Cc: Alexander Graf <agraf@suse.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net> Signed-off-by: Alexander Graf <agraf@suse.de>
2011-03-31lm32: use lookup table for opcodesMichael Walle
Instead of a for loop use a faster lookup table. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-03-31lm32: rename raise opcode to scallMichael Walle
To be consistent with the new reference manual. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
2011-03-29add a service to reap zombies, use it in SLIRPPaolo Bonzini
SLIRP -smb support wants to fork a process and forget about reaping it. To please it, add a generic service to register a process id and let QEMU reap it. In the future it could be enhanced to pass a status, but this would be unused. With this in place, the SIGCHLD signal handler would not stomp on pclose anymore. Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-29extract I/O handler lists to iohandler.cPaolo Bonzini
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-28vhost: fix dirty page handlingMichael S. Tsirkin
vhost was passing a physical address to cpu_physical_memory_set_dirty, which is wrong: we need to translate to ram address first. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Note: this lead to crashes during migration, so the patch is needed on the stable branch too.
2011-03-28virtio-serial: don't crash on invalid inputMichael S. Tsirkin
Fix crash on invalid input in virtio-serial. Discovered by code review, untested. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-03-28e1000: check buffer availabilityMichael S. Tsirkin
Reduce spurious packet drops on RX ring empty by verifying that we have at least 1 buffer ahead of the time. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-03-28virtio-pci: fix bus master work around on loadMichael S. Tsirkin
Commit c81131db15dd1844d0db1d51f3cd7a105cfd2cf3 detects old guests by comparing virtio and PCI status. It attempts to do this on load, as well, but load_config callback in a binding is invoked too early and so the virtio status isn't set yet. We could add yet another callback to the binding, to invoke after load, but it seems easier to reuse the existing vmstate callback. Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Cc: Alexander Graf <agraf@suse.de>
2011-03-28pci: use uint8_t for devfn_minIsaku Yamahata
use uint8_t for devfn_min instead of int. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-03-28pci: use PCI_DEVFN in pci_get_bus_devfn()Isaku Yamahata
Replace hardcoded logic by a common macro. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-03-28pci: use devfn for pci_find_device() instead of (slot, fn) pairIsaku Yamahata
(slot, fn) pair is somewhat confusing because of ARI. So use devfn for pci_find_device() instead of (slot, fn). Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-03-28pci: replace the magic, 256, for the maximum of devfnIsaku Yamahata
Introduce symbol PCI_SLOT_MAX for the # of slots, and replace the magic, 256. Signed-off-by: Isaku Yamahata <yamahata@valinux.co.jp> Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
2011-03-26report that QEMU process was killed by a signalGleb Natapov
Currently when rogue script kills QEMU process (using TERM/INT/HUP signal) it looks indistinguishable from system shutdown. Lets report that QEMU was killed and leave some clues about the killer identity. Signed-off-by: Gleb Natapov <gleb@redhat.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-03-26rtl8139: add vlan tag insertionBenjamin Poirier
Add support to the emulated hardware to insert vlan tags in packets going from the guest to the network. Signed-off-by: Benjamin Poirier <benjamin.poirier@gmail.com> Cc: Igor V. Kovalenko <igor.v.kovalenko@gmail.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-03-26rtl8139: add vlan tag extractionBenjamin Poirier
Add support to the emulated hardware to extract vlan tags in packets going from the network to the guest. Signed-off-by: Benjamin Poirier <benjamin.poirier@gmail.com> Cc: Igor V. Kovalenko <igor.v.kovalenko@gmail.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Blue Swirl <blauwirbel@gmail.com> -- AFAIK, extraction is optional to get vlans working. The driver requests rx detagging but should not assume that it was done. Under Linux, the mac layer will catch the vlan ethertype. I only added this part for completeness (to emulate the hardware more truthfully...) Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-03-26rtl8139: cleanup FCS calculationBenjamin Poirier
clean out ifdef's around ethernet checksum calculation Signed-off-by: Benjamin Poirier <benjamin.poirier@gmail.com> Acked-by: Igor V. Kovalenko <igor.v.kovalenko@gmail.com> Cc: Jason Wang <jasowang@redhat.com> Cc: Michael S. Tsirkin <mst@redhat.com> Cc: Blue Swirl <blauwirbel@gmail.com> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2011-03-25severe memory leak caused by broken palette_destroy() functionUlrich Obergfell
The following commit breaks the code of the function palette_destroy(). http://git.kernel.org/?p=virt/kvm/qemu-kvm.git;a=commit;h=e31e3694afef58ba191cbcc6875ec243e5971268 The broken code causes a severe memory leak of 'VncPalette' structures because it never frees anything: 70 void palette_destroy(VncPalette *palette) 71 { 72 if (palette == NULL) { 73 qemu_free(palette); 74 } 75 } Version 2 of the patch calls qemu_free() unconditionally. Signed-off-by: Ulrich Obergfell <uobergfe@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-25vl.c: Fix compilation failure if CONFIG_SDL isn't definedPeter Maydell
Fix a compilation failure if CONFIG_SDL isn't defined (gcc complained that the label 'invalid_display' wasn't used). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-24Merge remote branch 'amit/for-anthony' into stagingAnthony Liguori
2011-03-24tcg/arm: Support host code being compiled for ThumbPeter Maydell
Although the TCG generated code is always in ARM mode, it is possible that the host code was compiled by gcc in Thumb mode (this is often the default for Linux distributions targeting ARM v7 only). Handle this by using BLX imm when doing a call from ARM into Thumb mode. Since BLX imm is not a conditionalisable instruction, we make tcg_out_call() no longer take a condition code; we were only ever using it with COND_AL anyway. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Andrzej Zaborowski <andrew.zaborowski@intel.com>
2011-03-22Revert "x86: Save/restore PAT MSR"Anthony Liguori
This reverts commit c995b495b9d6e60ab1e390bd398a22425d0b3c8c. From Jan Kiszka: Ouch, indeed. Moreover, CPU_SAVE_VERSION was not updated (likely the reason for the breakage). Thanks for debugging this! Anthony (or whoever), please revert this unneeded commit in qemu.git. Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22vnc: fix build error from VNC_DIRTY_WORDSAnthony Liguori
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22fix vnc regressionWen Congyang
This patch fix the following regression: 1. we should use bitmap_set() and bitmap_clear() to replace vnc_set_bits(). Signed-off-by: Wen Congyang <wency@cn.fujitsu.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22qmp-commands.hx: Clean up mess of client_migrate_infoJes Sorensen
client_migrate_info was put into qmp-commands.hx in the middle of migrate_set_speed, between the command and it's description. In addition client_migrate_info put the description before the command itself, which is the wrong order. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22Make VNC support optionalJes Sorensen
Per default VNC is enabled. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22error message if user specifies curses on cmd line when curses is disabledJes Sorensen
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22error message if user specifies SDL cmd line option when SDL is disabledJes Sorensen
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22Add support for -display vncJes Sorensen
Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22Introduce -display noneJes Sorensen
New option -display none. This option differs from -nographic by not trying to take control of stdio etc. but instead behaves as if a graphics display is enabled, except that it doesn't show one. Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22Introduce -display argumentJes Sorensen
This patch introduces a -display argument which consolidates the setting of the display mode. Valid options are: sdl/curses/default Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22Consolidate DisplaySurface allocation in qemu_alloc_display()Jes Sorensen
This removes various code duplication from console.e and sdl.c Signed-off-by: Jes Sorensen <Jes.Sorensen@redhat.com> Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2011-03-22target-arm: use make_float32() to make constant floats for VRSQRTSPeter Maydell
The preferred way to create a constant floating point value is to use make_float32() rather than doing a runtime int32_to_float32(). Convert the code in the VRSQRTS helper to work this way. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22target-arm: Fix VRECPS edge cases handlingPeter Maydell
Correct the handling of edge cases for the VRECPS instruction: * this is a Neon instruction so uses the "standard FPSCR value" * (zero, inf) is a special case which returns 2.0 Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22target-arm: Fix TCG temporary leaks for scalar VMULLPeter Maydell
Fix a TCG temporary leak when translating 32-bit scalar VMULL. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22target-arm: Set Q bit for overflow in SMUAD and SMLADPeter Maydell
SMUAD and SMLAD are supposed to set the Q bit if the addition of the two 16x16 multiply products and optional accumulator overflows considered as a signed value. However we were only doing this check for the addition of the accumulator, not when adding the products, with the effect that we were mishandling the edge case where both inputs are 0x80008000. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22target-arm: Fix GE bits for v6media signed modulo arithmeticPeter Maydell
Fix the signed modulo arithmetic helpers for the v6media instructions (SADD8, SSUB8, SADD16, SSUB16, SASX, SSAX) to set the GE bits correctly (based on the result of the add or subtract before it is truncated to 16 bits, not after). Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22target-arm: Fix UNDEF cases in Thumb load/storePeter Maydell
Decode of Thumb load/store was merging together the cases of 'bit 11==0' (reg+reg LSL imm) and 'bit 11==1' (reg+imm). This happens to work for valid instruction patterns but meant that we would not UNDEF for the cases the architecture mandates that we must. Make the decode actually look at bit 11 as well as [10..8] so that we UNDEF in the right places. This change also removes what was a spurious unreachable 'case 8', and correctly frees TCG temporaries on the illegal-insn codepaths. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22linux-user: Fix unlock_user() call in return from poll()Peter Maydell
Correct the broken attempt to calculate the third argument to unlock_user() in the code path which unlocked the pollfd array on return from poll() and ppoll() emulation. (This only caused a problem if unlock_user() wasn't a no-op, eg if DEBUG_REMAP is defined.) Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22vmmouse: Register vmstate via qdevJan Kiszka
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22vmmouse: Fix initializationJan Kiszka
Latest refactorings left vmmouse nonfunctional behind. Fix it by adding the required device initialization. Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22vmmouse: Fix typo preventing x86-64 buildJan Kiszka
Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22fix applesmc REV keyRené Rebe
Fix applesmc REV key string literal hex encoding. Signed-off-by: René Rebe <rene@exactcode.de> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
2011-03-22enable kvm for ppc(32) on ppc64René Rebe
ppc64 is backward compatible, likewise. Signed-off-by: René Rebe <rene@exactcode.de> Acked-by: Alexander Graf <agraf@suse.de> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
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