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2013-07-29cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState"Andreas Färber
Commit c643bed99 moved qemu_init_vcpu() calls to common CPUState code. This causes x86 cpu-add to fail with "KVM: setting VAPIC address failed". The reason for the failure is that CPUClass::kvm_fd is not yet initialized in the following call graph: ->x86_cpu_realizefn ->x86_cpu_apic_realize ->qdev_init ->device_set_realized ->device_reset (hotplugged == 1) ->apic_reset_common ->vapic_base_update ->kvm_apic_vapic_base_update This causes attempted KVM vCPU ioctls to fail. By contrast, in the non-hotplug case the APIC is reset much later, when the vCPU is already initialized. As a quick and safe solution, move the qemu_init_vcpu() call back into the targets' realize functions. Reported-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com> Acked-by: Igor Mammedov <imammedo@redhat.com> (for i386) Tested-by: Jia Liu <proljc@gmail.com> (for openrisc) Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-27misc: Use g_assert_not_reached for code which is expected to be unreachableStefan Weil
The macro g_assert_not_reached is a better self documenting replacement for assert(0) or assert(false). Signed-off-by: Stefan Weil <sw@weilnetz.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-07-27cpu: Introduce CPUClass::gdb_core_xml_file for GDB_CORE_XMLAndreas Färber
Replace the GDB_CORE_XML define in gdbstub.c with a CPUClass field. Use first_cpu for qSupported and qXfer:features:read: for now. Add a stub for xml_builtin. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-27cpu: Introduce CPUClass::gdb_{read,write}_register()Andreas Färber
Completes migration of target-specific code to new target-*/gdbstub.c. Acked-by: Michael Walle <michael@walle.cc> (for lm32) Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa) Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-27gdbstub: Replace GET_REG*() macros with gdb_get_reg*() functionsAndreas Färber
This avoids polluting the global namespace with a non-prefixed macro and makes it obvious in the call sites that we return. Semi-automatic conversion using, e.g., sed -i 's/GET_REGL(/return gdb_get_regl(mem_buf, /g' target-*/gdbstub.c followed by manual tweaking for sparc's GET_REGA() and Coding Style. Acked-by: Michael Walle <michael@walle.cc> (for lm32) Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa) Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-26target-arm: Move cpu_gdb_{read,write}_register()Andreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-26cpu: Introduce CPUState::gdb_num_regs and CPUClass::gdb_num_core_regsAndreas Färber
CPUState::gdb_num_regs replaces num_g_regs. CPUClass::gdb_num_core_regs replaces NUM_CORE_REGS. Allows building gdb_register_coprocessor() for xtensa, too. As a side effect this should fix coprocessor register numbering for SMP. Acked-by: Michael Walle <michael@walle.cc> (for lm32) Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa) Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23gdbstub: Change gdb_register_coprocessor() argument to CPUStateAndreas Färber
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23exec: Change cpu_memory_rw_debug() argument to CPUStateAndreas Färber
Propagate X86CPU in kvmvapic for simplicity. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23cpu: Turn cpu_get_phys_page_debug() into a CPUClass hookAndreas Färber
Change breakpoint_invalidate() argument to CPUState alongside. Since all targets now assign a softmmu-only field, we can drop helpers cpu_class_set_{do_unassigned_access,vmsd}() and device_class_set_vmsd(). Prepares for changing cpu_memory_rw_debug() argument to CPUState. Acked-by: Max Filippov <jcmvbkbc@gmail.com> (for xtensa) Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23gdbstub: Change syscall callback argument to CPUStateAndreas Färber
Callback implementations were specific to arm and m68k, so can easily cast to ARMCPU and M68kCPU respectively. Prepares for changing GDBState::c_cpu to CPUState. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23cpu: Move singlestep_enabled field from CPU_COMMON to CPUStateAndreas Färber
Prepares for changing cpu_single_step() argument to CPUState. Acked-by: Michael Walle <michael@walle.cc> (for lm32) Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23cpu: Introduce CPUClass::synchronize_from_tb() for cpu_pc_from_tb()Andreas Färber
Where no extra implementation is needed, fall back to CPUClass::set_pc(). Acked-by: Michael Walle <michael@walle.cc> (for lm32) Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-23cpu: Introduce CPUClass::set_pc() for gdb_set_cpu_pc()Andreas Färber
This moves setting the Program Counter from gdbstub into target code. Use vaddr type as upper-bound replacement for target_ulong. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-15target-arm: Avoid g_hash_table_get_keys()Peter Maydell
g_hash_table_get_keys() was only introduced in glib 2.14, and we're still targeting a minimum version of 2.12. Rewrite the offending code (introduced in commit 721fae1) to use g_hash_table_foreach() to build the list of keys. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Tested-by: Laurent Desnogues <laurent.desnogues@gmail.com> Tested-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 1372678819-8633-1-git-send-email-peter.maydell@linaro.org
2013-07-15target-arm: avoid undefined behaviour when writing TTBCRPeter Maydell
LPAE CPUs have more potentially valid bits in the TTBCR, and so the simple masking out of invalid bits is no longer sufficient to obtain the base address width field of the register, which is what we use to precalculate c2_mask and c2_base_mask. Explicitly extract the relevant register field rather than simply shifting by the register value. This bug would have had no ill effects in practice, since if the EAE bit (TTBCR bit 31) is set then we don't use the precalculated masks, and if EAE is zero then bits 30..3 are all UNK/SBZP, so well-behaved guests won't set them. However the shift is undefined behaviour, so we should avoid it. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Message-id: 1372347527-4428-1-git-send-email-peter.maydell@linaro.org
2013-07-15target-arm/helper.c: Allow const opaques in arm CPPeter Crosthwaite
Allow for defining const opaque data in ARM CP register definitions by setting .opaque = foo. If non null opaque is passed into define_one_arm_cp_reg_with_opaque then that opaque will take precedence, otherwise if null opaque is passed, the original opaque data will be used. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: cf0a3ac3438d97464240db9f5f4ef1585cbc1d77.1373429432.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-07-15target-arm/helper.c: Implement MIDR aliasesPeter Crosthwaite
Unimplemented registers in the cp15, CRn=0, opc1=0, CRm=0 space default to aliasing the MIDR register. Set all registers in the space to access MIDR by default. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 6127846712b7ad2727354a4f5e1d809451f1e859.1373429432.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-07-15target-arm/helper.c: OMAP/StrongARM cp15 crn=0 cleanupPeter Crosthwaite
The if block detecting OMAP/StrongARM modifies the id_cp_reginfo .access fields in place. So there is no need to replicate the call to define_arm_cp_reg(). Dropped, and let the OMAP case fall through to the normal behaviour after the in-place modification. Signed-off-by: Peter Crosthwaite <peter.crosthwaite@xilinx.com> Message-id: 72aae9b8ebbc9a76d2b06faf8666ef8a4b34b92a.1373429432.git.peter.crosthwaite@xilinx.com Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-07-15target-arm: explicitly decode SEVL instructionMans Rullgard
The ARMv8 SEVL instruction is in the architectural hint space already emulated as nop. This makes the decoding of SEVL explicit for clarity. Signed-off-by: Mans Rullgard <mans@mansr.com> Message-id: 1370606786-5650-3-git-send-email-mans@mansr.com [PMM: added 'SEVL' to the TODO comment] Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-07-15target-arm: implement LDA/STL instructionsMans Rullgard
This adds support for the ARMv8 load acquire/store release instructions. Since qemu does nothing special for memory barriers, these can be emulated like their non-acquire/release counterparts. Signed-off-by: Mans Rullgard <mans@mansr.com> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-07-15target-arm: add feature flag for ARMv8Mans Rullgard
Signed-off-by: Mans Rullgard <mans@mansr.com> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-07-09cpu: Move reset logging to CPUStateAndreas Färber
x86 was using additional CPU_DUMP_* flags, so make that configurable in CPUClass::reset_dump_flags. This adds reset logging for alpha, unicore32 and xtensa. Acked-by: Michael Walle <michael@walle.cc> (for lm32) Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09log: Change log_cpu_state[_mask]() argument to CPUStateAndreas Färber
Since commit 878096eeb278a8ac1ccd6667af73e026f29b4cf5 (cpu: Turn cpu_dump_{state,statistics}() into CPUState hooks) CPUArchState is no longer needed. Add documentation and make the functions available through qemu/log.h outside NEED_CPU_H to allow use in qom/cpu.c. Moving them to qom/cpu.h was not yet possible due to convoluted include paths, so that some devices grow an implicit and unneeded dependency on qom/cpu.h for now. Acked-by: Michael Walle <michael@walle.cc> (for lm32) Reviewed-by: Richard Henderson <rth@twiddle.net> [AF: Simplified mb_cpu_do_interrupt() and do_interrupt_all() changes] Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09target-arm: Change gen_intermediate_code_internal() argument to ARMCPUAndreas Färber
Also use bool type while at it. Prepares for moving singlestep_enabled field to CPUState. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09cpu: Drop unnecessary dynamic casts in *_env_get_cpu()Andreas Färber
A transition from CPUFooState to FooCPU can be considered safe, just like FooCPU::env access in the opposite direction. The only benefit of the FOO_CPU() casts would be protection against bogus CPUFooState pointers, but then surrounding code would likely break, too. This should slightly improve interrupt etc. performance when going from CPUFooState to FooCPU. For any additional CPU() casts see 3556c233d931ad5ffa46a35cb25cfc057732ebb8 (qom: allow turning cast debugging off). Reported-by: Anthony Liguori <aliguori@us.ibm.com> Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-07-09linux-user: Move cpu_clone_regs() and cpu_set_tls() into linux-userPeter Maydell
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>
2013-07-04memory: add ref/unref callsPaolo Bonzini
Add ref/unref calls at the following places: - places where memory regions are stashed by a listener and used outside the BQL (including in Xen or KVM). - memory_region_find callsites - creation of aliases and containers (only the aliased/contained region gets a reference to avoid loops) - around calls to del_subregion/add_subregion, where the region could disappear after the first call Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
2013-06-28cpu: Change qemu_init_vcpu() argument to CPUStateAndreas Färber
This allows to move the call into CPUState's realizefn. Therefore move the stub into libqemustub.a. Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-28cpu: Turn cpu_dump_{state,statistics}() into CPUState hooksAndreas Färber
Make cpustats monitor command available unconditionally. Prepares for changing kvm_handle_internal_error() and kvm_cpu_exec() arguments to CPUState. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-06-25target-arm: Make LPAE feature imply V7MPPeter Maydell
The v7 ARM ARM specifies that the Large Physical Address Extension requires implementation of the Multiprocessing Extensions, so make our LPAE feature imply V7MP rather than specifying both in the A15 CPU initfn. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Message-id: 1371127899-10364-1-git-send-email-peter.maydell@linaro.org
2013-06-25target-arm: Use tuple list to sync cp regs with KVMPeter Maydell
Use the tuple list of cp registers for syncing KVM state to QEMU, rather than only syncing a very minimal set by hand. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-06-25target-arm: Reinitialize all KVM VCPU registers on resetPeter Maydell
Since the ARM KVM API doesn't include a "reset this VCPU" ioctl, we have to capture the initial values of every register it knows about so that we can reset the VCPU by feeding those values back again. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-06-25target-arm: Initialize cpreg list from KVM when using KVMPeter Maydell
When using KVM, use the kernel's initial state to set up the cpreg list, and sync to and from the kernel when doing migration. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-06-25target-arm: Convert TCG to using (index,value) list for cp migrationPeter Maydell
Convert the TCG ARM target to using an (index,value) list for migrating coprocessors. The primary benefit of the (index,value) list is for passing state between KVM and QEMU, but it works for TCG-to-TCG migration as well and is a useful self-contained first step. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-06-25target-arm: mark up cpregs for no-migrate or raw accessPeter Maydell
Mark up coprocessor register definitions to add raw access functions or mark the register as non-migratable where necessary. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-06-25target-arm: Add raw_readfn and raw_writefn to ARMCPRegInfoPeter Maydell
For reading and writing register values from the kernel for KVM, we need to provide accessor functions which are guaranteed to succeed and don't impose access checks, mask out unwritable bits, etc. Define new fields raw_readfn and raw_writefn for this purpose; these only need to be provided if there is a readfn or writefn already and it is not suitable. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-06-25target-arm: Allow special cpregs to have flags setPeter Maydell
Relax the "is this a valid ARMCPRegInfo type value?" check to permit "special" cpregs to have flags other than ARM_CP_SPECIAL set. At the moment none of the other flags are relevant for special regs, but the migration related flag we're about to introduce can apply here too. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-06-14Merge remote-tracking branch 'mjt/trivial-patches-next' into stagingAnthony Liguori
# By Michael Tokarev (4) and others # Via Michael Tokarev * mjt/trivial-patches-next: (26 commits) piix: fix some printf errors when debug is enabled cputlb: fix debug logs create qemu_openpty_raw() helper function and move it to a separate file main-loop: do not include slirp/slirp.h, use libslirp.h instead libcacard/vscclient: fix leakage of socket on error paths linux-headers: Update to v3.10-rc5 KVM: PPC: Add dummy kvm_arch_init_irq_routing() KVM: S390: Add dummy kvm_arch_init_irq_routing() KVM: ARM: Add dummy kvm_arch_init_irq_routing() ivshmem: add missing error exit(2) hw/xen: Use g_free instead of free and fix potential memory leaks target-sparc: Replace free by g_free hw/scsi: Don't increment a boolean value device tree: Fix cppcheck warning Makefile: Install qemu-img and qemu-nbd man pages only if built Unbreak -no-quit for GTK, validate SDL options gtk: implement -full-screen char/serial: serial_ioport_write: Factor out common code char/serial: Use generic Fifo8 char/serial: cosmetic fixes. ... Message-id: 1371207042-17980-1-git-send-email-mjt@msgid.tls.msk.ru Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-06-14Merge remote-tracking branch 'pmaydell/target-arm.next' into stagingAnthony Liguori
# By Peter Chubb # Via Peter Maydell * pmaydell/target-arm.next: Fix rfe instruction Message-id: 1370268884-25945-1-git-send-email-peter.maydell@linaro.org Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>
2013-06-12KVM: ARM: Add dummy kvm_arch_init_irq_routing()Alexey Kardashevskiy
The common KVM code insists on calling kvm_arch_init_irq_routing() as soon as it sees kernel header support for it (regardless of whether QEMU supports it). Provide a dummy function to satisfy this. Signed-off-by: Alexey Kardashevskiy <aik@ozlabs.ru> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-06-03Fix rfe instructionPeter Chubb
The rfe instruction has been broken since patch 5a839c0d54fac9db0516904db873a4fe01f50f4b because of a typo. Signed-off-by: Peter Chubb <peter.chubb@nicta.com.au> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2013-06-01Remove unnecessary break statementsStefan Weil
Fix these warnings from cppcheck: hw/display/cirrus_vga.c:2603: hw/sd/sd.c:348: hw/timer/exynos4210_mct.c:1033: target-arm/translate.c:9886: target-s390x/mem_helper.c:518: target-unicore32/translate.c:1936: style: Consecutive return, break, continue, goto or throw statements are unnecessary. Signed-off-by: Stefan Weil <sw@weilnetz.de> Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
2013-05-26target-arm: Remove gen_{ld,st}* definitionsPeter Maydell
All the uses of the gen_{ld,st}* functions are gone now, so remove the functions themselves. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-05-26target-arm: Remove gen_{ld,st}* from thumb2 decoderPeter Maydell
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-05-26target-arm: Remove gen_{ld,st}* from Thumb insnsPeter Maydell
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-05-26target-arm: Remove gen_{ld,st}* from basic ARM insnsPeter Maydell
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-05-26target-arm: Remove use of gen_{ld,st}* from ldrex/strexPeter Maydell
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-05-26target-arm: Remove uses of gen_{ld,st}* from Neon codePeter Maydell
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
2013-05-26target-arm: Remove uses of gen_{ld,st}* from iWMMXt codePeter Maydell
Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
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