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cpu: add APIs to allocate/free CPU environment
These will be implemented and then used by follow-up patches. Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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@ -162,6 +162,10 @@ typedef struct CPUClass {
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void (*dump_statistics)(CPUState *cpu, FILE *f,
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fprintf_function cpu_fprintf, int flags);
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int64_t (*get_arch_id)(CPUState *cpu);
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void * (*alloc_env)(CPUState *cpu);
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void (*get_env)(CPUState *cpu, void *env);
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void (*set_env)(CPUState *cpu, void *env);
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void (*free_env)(CPUState *cpu, void *env);
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bool (*get_paging_enabled)(const CPUState *cpu);
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void (*get_memory_mapping)(CPUState *cpu, MemoryMappingList *list,
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Error **errp);
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@ -439,6 +443,33 @@ static inline void cpu_tb_jmp_cache_clear(CPUState *cpu)
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extern bool mttcg_enabled;
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#define qemu_tcg_mttcg_enabled() (mttcg_enabled)
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/**
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* cpu_alloc_env: allocate CPU environment structure
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* @cpu: allocate environment structure for this CPU
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*/
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void *cpu_alloc_env(CPUState *cpu);
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/**
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* cpu_get_env: retrieve CPU environment structure
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* @cpu: CPU to use
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* @env: environment structure to use
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*/
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void cpu_get_env(CPUState *cpu, void *env);
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/**
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* cpu_set_env: switch to given CPU environment
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* @cpu: CPU to use
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* @env: environment structure to use
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*/
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void cpu_set_env(CPUState *cpu, void *env);
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/**
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* cpu_free_env: free CPU environment structure
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* @cpu: free environment structure for this CPU
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* @env: structure to free
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*/
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void cpu_free_env(CPUState *cpu, void *env);
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/**
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* cpu_paging_enabled:
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* @cpu: The CPU whose state is to be inspected.
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34
qom/cpu.c
34
qom/cpu.c
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@ -89,6 +89,40 @@ out:
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return cpu;
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}
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void *cpu_alloc_env(CPUState *cpu)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu);
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return cc->alloc_env ? cc->alloc_env(cpu) : NULL;
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}
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void cpu_get_env(CPUState *cpu, void *env)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu);
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if (cc->get_env) {
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cc->get_env(cpu, env);
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}
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}
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void cpu_set_env(CPUState *cpu, void *env)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu);
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if (cc->set_env) {
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cc->set_env(cpu, env);
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}
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}
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void cpu_free_env(CPUState *cpu, void *env)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu);
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if (cc->free_env) {
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cc->free_env(cpu, env);
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}
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}
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bool cpu_paging_enabled(const CPUState *cpu)
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{
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CPUClass *cc = CPU_GET_CLASS(cpu);
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