eb2edc42b1
Guests can now be debugged through the gdbstub. Support is added for single-stepping, software breakpoints, hardware breakpoints and watchpoints. The code has been structured like the KVM counterpart. While guest debugging is enabled, the guest can still read and write the DBG*_EL1 registers but they don't have any effect. Signed-off-by: Francesco Cagnin <fcagnin@quarkslab.com> Message-id: 20230601153107.81955-5-fcagnin@quarkslab.com Reviewed-by: Peter Maydell <peter.maydell@linaro.org> Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
77 lines
2.1 KiB
C
77 lines
2.1 KiB
C
/*
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* QEMU Hypervisor.framework (HVF) support
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*
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* Copyright Google Inc., 2017
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*
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* This work is licensed under the terms of the GNU GPL, version 2 or later.
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* See the COPYING file in the top-level directory.
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*
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*/
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/* header to be included in non-HVF-specific code */
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#ifndef HVF_H
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#define HVF_H
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#include "qemu/accel.h"
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#include "qom/object.h"
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#ifdef NEED_CPU_H
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#include "cpu.h"
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#ifdef CONFIG_HVF
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uint32_t hvf_get_supported_cpuid(uint32_t func, uint32_t idx,
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int reg);
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extern bool hvf_allowed;
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#define hvf_enabled() (hvf_allowed)
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#else /* !CONFIG_HVF */
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#define hvf_enabled() 0
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#define hvf_get_supported_cpuid(func, idx, reg) 0
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#endif /* !CONFIG_HVF */
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#endif /* NEED_CPU_H */
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#define TYPE_HVF_ACCEL ACCEL_CLASS_NAME("hvf")
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typedef struct HVFState HVFState;
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DECLARE_INSTANCE_CHECKER(HVFState, HVF_STATE,
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TYPE_HVF_ACCEL)
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#ifdef NEED_CPU_H
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struct hvf_sw_breakpoint {
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target_ulong pc;
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target_ulong saved_insn;
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int use_count;
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QTAILQ_ENTRY(hvf_sw_breakpoint) entry;
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};
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struct hvf_sw_breakpoint *hvf_find_sw_breakpoint(CPUState *cpu,
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target_ulong pc);
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int hvf_sw_breakpoints_active(CPUState *cpu);
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int hvf_arch_insert_sw_breakpoint(CPUState *cpu, struct hvf_sw_breakpoint *bp);
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int hvf_arch_remove_sw_breakpoint(CPUState *cpu, struct hvf_sw_breakpoint *bp);
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int hvf_arch_insert_hw_breakpoint(target_ulong addr, target_ulong len,
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int type);
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int hvf_arch_remove_hw_breakpoint(target_ulong addr, target_ulong len,
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int type);
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void hvf_arch_remove_all_hw_breakpoints(void);
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/*
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* hvf_update_guest_debug:
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* @cs: CPUState for the CPU to update
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*
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* Update guest to enable or disable debugging. Per-arch specifics will be
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* handled by calling down to hvf_arch_update_guest_debug.
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*/
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int hvf_update_guest_debug(CPUState *cpu);
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void hvf_arch_update_guest_debug(CPUState *cpu);
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/*
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* Return whether the guest supports debugging.
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*/
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bool hvf_arch_supports_guest_debug(void);
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#endif /* NEED_CPU_H */
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#endif
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