80 lines
2.0 KiB
C
80 lines
2.0 KiB
C
/*
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* KVM guest kernel processes debugging support
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* Copyright 2011 Salavat S. Guiliazov (atic@mcst.ru)
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*/
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#ifndef _E2K_KVM_GUEST_DEBUG_H
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#define _E2K_KVM_GUEST_DEBUG_H
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#include <linux/types.h>
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/* Read instruction word (two syllables) from IP address */
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static inline unsigned long
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kvm_read_instr_on_IP(e2k_addr_t ip, e2k_addr_t phys_ip)
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{
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/* guest image should be read on virtual physical IP */
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return *((u64 *)pa_to_vpa(phys_ip));
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}
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/* Write modified instruction word at IP address */
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static inline void
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kvm_modify_instr_on_IP(e2k_addr_t ip, e2k_addr_t phys_ip,
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unsigned long instr_word)
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{
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/* guest image should be writed on virtual physical IP */
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*((u64 *)pa_to_vpa(phys_ip)) = instr_word;
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}
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#ifdef CONFIG_KVM_GUEST_KERNEL
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/* it is pure guest kernel (not paravirtualized based on pv_ops) */
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#include <asm/kvm/vcpu-regs-debug-inline.h>
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#define GET_PHYS_ADDR(task, addr) GUEST_GET_PHYS_ADDR(task, addr)
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#define debug_guest_regs(task) false /* none any guests */
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#define get_cpu_type_name() "VCPU" /* virtual CPU */
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static inline void print_all_guest_stacks(void)
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{
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/* nothing to do, guest has not other guest processes */
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}
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static inline void print_guest_vcpu_stack(struct kvm_vcpu *vcpu)
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{
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/* nothing to do, guest has not other guest processes */
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}
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static inline void
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print_guest_stack(struct task_struct *task,
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stack_regs_t *const regs, bool show_reg_window)
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{
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/* nothing to do, guest has not other guest processes */
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}
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static inline void
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host_ftrace_stop(void)
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{
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HYPERVISOR_ftrace_stop();
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}
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static inline void
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host_ftrace_dump(void)
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{
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HYPERVISOR_ftrace_dump();
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}
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/* Read instruction word (two syllables) from IP address */
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static inline unsigned long
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read_instr_on_IP(e2k_addr_t ip, e2k_addr_t phys_ip)
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{
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return kvm_read_instr_on_IP(ip, phys_ip);
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}
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/* Write modified instruction word at IP address */
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static inline void
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modify_instr_on_IP(e2k_addr_t ip, e2k_addr_t phys_ip,
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unsigned long instr_word)
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{
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kvm_modify_instr_on_IP(ip, phys_ip, instr_word);
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}
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#endif /* CONFIG_KVM_GUEST_KERNEL */
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#endif /* ! _E2K_KVM_GUEST_DEBUG_H */
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