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2014-10-06gdbstub: Allow target CPUs to specify watchpoint STOP_BEFORE_ACCESS flagPeter Maydell1-0/+1
GDB assumes that watchpoint set via the gdbstub remote protocol will behave in the same way as hardware watchpoints for the target. In particular, whether the CPU stops with the PC before or after the insn which triggers the watchpoint is target dependent. Allow guest CPU code to specify which behaviour to use. This fixes a bug where with guest CPUs which stop before the accessing insn GDB would manually step forward over what it thought was the insn and end up one insn further forward than it should be. We set this flag for the CPU architectures which set gdbarch_have_nonsteppable_watchpoint in gdb 7.7: ARM, CRIS, LM32, MIPS and Xtensa. Signed-off-by: Peter Maydell <peter.maydell@linaro.org> Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Tested-by: Max Filippov <jcmvbkbc@gmail.com> Tested-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com> Tested-by: Michael Walle <michael@walle.cc> (for lm32) Message-id: 1410545057-14014-1-git-send-email-peter.maydell@linaro.org
2014-09-25target-lm32: Use cpu_exec_interrupt qom hookRichard Henderson1-0/+1
Cc: Michael Walle <michael@walle.cc> Signed-off-by: Richard Henderson <rth@twiddle.net> Acked-by: Michael Walle <michael@walle.cc> Message-id: 1410626734-3804-21-git-send-email-rth@twiddle.net Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-09-12cpu-exec: Make debug_excp_handler a QOM CPU methodPeter Maydell1-1/+1
Make the debug_excp_handler target specific hook into a QOM CPU method. Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
2014-03-13cputlb: Change tlb_flush() argument to CPUStateAndreas Färber1-1/+1
Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Move breakpoints field from CPU_COMMON to CPUStateAndreas Färber1-1/+1
Most targets were using offsetof(CPUFooState, breakpoints) to determine how much of CPUFooState to clear on reset. Use the next field after CPU_COMMON instead, if any, or sizeof(CPUFooState) otherwise. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Turn cpu_handle_mmu_fault() into a CPUClass hookAndreas Färber1-1/+3
Note that while such functions may exist both for *-user and softmmu, only *-user uses the CPUState hook, while softmmu reuses the prototype for calling it directly. Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-03-13cpu: Turn cpu_has_work() into a CPUClass hookAndreas Färber1-0/+6
Default to false. Tidy variable naming and inline cast uses while at it. Tested-by: Jia Liu <proljc@gmail.com> (or32) Signed-off-by: Andreas Färber <afaerber@suse.de>
2014-02-04target-lm32: add breakpoint/watchpoint supportMichael Walle1-0/+1
This patch adds in-target breakpoint and watchpoint support. Signed-off-by: Michael Walle <michael@walle.cc>
2014-02-04target-lm32: move model features to LM32CPUMichael Walle1-1/+186
This allows us to completely remove CPULM32State from DisasContext. Instead, copy the fields we need to DisasContext. Reviewed-by: Andreas Färber <afaerber@suse.de> Signed-off-by: Michael Walle <michael@walle.cc>
2013-07-29cpu: Partially revert "cpu: Change qemu_init_vcpu() argument to CPUState"Andreas Färber1-2/+4
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>
2013-07-27cpu: Introduce CPUClass::gdb_{read,write}_register()Andreas Färber1-0/+2
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>
2013-07-26cpu: Introduce CPUState::gdb_num_regs and CPUClass::gdb_num_core_regsAndreas Färber1-0/+1
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>
2013-07-23cpu: Turn cpu_get_phys_page_debug() into a CPUClass hookAndreas Färber1-1/+4
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>
2013-07-23cpu: Introduce CPUClass::set_pc() for gdb_set_cpu_pc()Andreas Färber1-0/+8
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>
2013-07-09cpu: Move reset logging to CPUStateAndreas Färber1-5/+0
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 Färber1-1/+1
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>
2013-06-28cpu: Change qemu_init_vcpu() argument to CPUStateAndreas Färber1-2/+0
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 Färber1-0/+1
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>
2013-03-18target-lm32: flush tlb after clearing envMichael Walle1-2/+2
The tlb data is stored within the CPU env. Therefore, the initialization has to be done after we clear the environment. Otherwise the tlb will have a valid entry for address 0x0. Signed-off-by: Michael Walle <michael@walle.cc>
2013-03-12target-lm32: Update VMStateDescription to LM32CPUAndreas Färber1-0/+1
Add a vmstate_lm32_cpu referencing the previous VMStateDescription as a sub-struct and hook it up to CPUClass::vmsd. Drop cpu_{save,load}(). Acked-by: Michael Walle <michael@walle.cc> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-03-12cpu: Replace do_interrupt() by CPUClass::do_interrupt methodAndreas Färber1-0/+2
This removes a global per-target function and thus takes us one step closer to compiling multiple targets into one executable. It will also allow to override the interrupt handling for certain CPU families. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-16cpu: Add CPUArchState pointer to CPUStateAndreas Färber1-0/+2
The target-specific ENV_GET_CPU() macros have allowed us to navigate from CPUArchState to CPUState. The reverse direction was not supported. Avoid introducing CPU_GET_ENV() macros by initializing an untyped pointer that is initialized in derived instance_init functions. The field may not be called "env" due to it being poisoned. Acked-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-16target-lm32: Move TCG initialization to LM32CPU initfnAndreas Färber1-0/+6
Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-02-16target-lm32: Introduce QOM realizefn for LM32CPUAndreas Färber1-2/+16
Introduce a realizefn and set realized = true in cpu_lm32_init(). Also move cpu_reset() call from initfn to realizefn. Signed-off-by: Andreas Färber <afaerber@suse.de>
2013-01-15cpu: Move cpu_index field to CPUStateAndreas Färber1-1/+1
Note that target-alpha accesses this field from TCG, now using a negative offset. Therefore the field is placed last in CPUState. Pass PowerPCCPU to [kvm]ppc_fixup_cpu() to facilitate this change. Move common parts of mips cpu_state_reset() to mips_cpu_reset(). Acked-by: Richard Henderson <rth@twiddle.net> (for alpha) [AF: Rebased onto ppc CPU subclasses and openpic changes] Signed-off-by: Andreas Färber <afaerber@suse.de>
2012-06-04target-lm32: Let cpu_lm32_init() return LM32CPUAndreas Färber1-1/+1
Make the include paths for cpu-qom.h consistent to allow using LM32CPU in cpu.h. Turn cpu_init macro into a static inline function returning CPULM32State for backwards compatibility. Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Michael Walle <michael@walle.cc>
2012-04-12target-lm32: QOM'ify CPU resetAndreas Färber1-1/+9
Move code from cpu_state_reset() into QOM lm32_cpu_reset(). Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Michael Walle <michael@walle.cc>
2012-04-12target-lm32: QOM'ify CPU initAndreas Färber1-0/+13
Move code from cpu_lm32_init() to an initfn; call cpu_reset() instead of cpu_state_reset(). Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Michael Walle <michael@walle.cc>
2012-04-12target-lm32: QOM'ify CPUAndreas Färber1-0/+60
Embed CPULM32State as first member of QOM LM32CPU. Let CPUClass::reset() call cpu_state_reset() for now. Signed-off-by: Andreas Färber <afaerber@suse.de> Acked-by: Michael Walle <michael@walle.cc>
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