Commit e2a7f286 authored by Michael S. Tsirkin's avatar Michael S. Tsirkin
Browse files

cpu: add APIs to allocate/free CPU environment 



These will be implemented and then used by follow-up patches.

Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
parent a41c78c1

include/qom/cpu.h

+31 −0
Original line number Diff line number Diff line
@@ -162,6 +162,10 @@ typedef struct CPUClass { 
    void (*dump_statistics)(CPUState *cpu, FILE *f,

                            fprintf_function cpu_fprintf, int flags);

    int64_t (*get_arch_id)(CPUState *cpu);

    void * (*alloc_env)(CPUState *cpu);

    void (*get_env)(CPUState *cpu, void *env);

    void (*set_env)(CPUState *cpu, void *env);

    void (*free_env)(CPUState *cpu, void *env);

    bool (*get_paging_enabled)(const CPUState *cpu);

    void (*get_memory_mapping)(CPUState *cpu, MemoryMappingList *list,

                               Error **errp);
@@ -439,6 +443,33 @@ static inline void cpu_tb_jmp_cache_clear(CPUState *cpu) 
extern bool mttcg_enabled;

#define qemu_tcg_mttcg_enabled() (mttcg_enabled)



/**

 * cpu_alloc_env: allocate CPU environment structure

 * @cpu: allocate environment structure for this CPU

 */

void *cpu_alloc_env(CPUState *cpu);



/**

 * cpu_get_env: retrieve CPU environment structure

 * @cpu: CPU to use

 * @env: environment structure to use

 */

void cpu_get_env(CPUState *cpu, void *env);



/**

 * cpu_set_env: switch to given CPU environment

 * @cpu: CPU to use

 * @env: environment structure to use

 */

void cpu_set_env(CPUState *cpu, void *env);



/**

 * cpu_free_env: free CPU environment structure

 * @cpu: free environment structure for this CPU

 * @env: structure to free

 */

void cpu_free_env(CPUState *cpu, void *env);



/**

 * cpu_paging_enabled:

 * @cpu: The CPU whose state is to be inspected.

qom/cpu.c

+34 −0
Original line number Diff line number Diff line
@@ -89,6 +89,40 @@ out: 
    return cpu;

}



void *cpu_alloc_env(CPUState *cpu)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);



    return cc->alloc_env ? cc->alloc_env(cpu) : NULL;

}



void cpu_get_env(CPUState *cpu, void *env)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);



    if (cc->get_env) {

        cc->get_env(cpu, env);

    }

}



void cpu_set_env(CPUState *cpu, void *env)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);



    if (cc->set_env) {

        cc->set_env(cpu, env);

    }

}



void cpu_free_env(CPUState *cpu, void *env)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);



    if (cc->free_env) {

        cc->free_env(cpu, env);

    }

}



bool cpu_paging_enabled(const CPUState *cpu)

{

    CPUClass *cc = CPU_GET_CLASS(cpu);