diff options
Diffstat (limited to 'include/hw/core/cpu.h')
| -rw-r--r-- | include/hw/core/cpu.h | 22 |
1 files changed, 13 insertions, 9 deletions
diff --git a/include/hw/core/cpu.h b/include/hw/core/cpu.h index d0b17dcc4c..8cf5585db7 100644 --- a/include/hw/core/cpu.h +++ b/include/hw/core/cpu.h @@ -86,6 +86,19 @@ typedef struct TcgCpuOperations { * Called when the first CPU is realized. */ void (*initialize)(void); + /** + * @synchronize_from_tb: Synchronize state from a TCG #TranslationBlock + * + * This is called when we abandon execution of a TB before starting it, + * and must set all parts of the CPU state which the previous TB in the + * chain may not have updated. + * By default, when this is NULL, a call is made to @set_pc(tb->pc). + * + * If more state needs to be restored, the target must implement a + * function to restore all the state, and register it here. + */ + void (*synchronize_from_tb)(CPUState *cpu, + const struct TranslationBlock *tb); } TcgCpuOperations; @@ -119,13 +132,6 @@ typedef struct TcgCpuOperations { * If the target behaviour here is anything other than "set * the PC register to the value passed in" then the target must * also implement the synchronize_from_tb hook. - * @synchronize_from_tb: Callback for synchronizing state from a TCG - * #TranslationBlock. This is called when we abandon execution - * of a TB before starting it, and must set all parts of the CPU - * state which the previous TB in the chain may not have updated. - * This always includes at least the program counter; some targets - * will need to do more. If this hook is not implemented then the - * default is to call @set_pc(tb->pc). * @tlb_fill: Callback for handling a softmmu tlb miss or user-only * address fault. For system mode, if the access is valid, call * tlb_set_page and return true; if the access is invalid, and @@ -202,8 +208,6 @@ struct CPUClass { void (*get_memory_mapping)(CPUState *cpu, MemoryMappingList *list, Error **errp); void (*set_pc)(CPUState *cpu, vaddr value); - void (*synchronize_from_tb)(CPUState *cpu, - const struct TranslationBlock *tb); bool (*tlb_fill)(CPUState *cpu, vaddr address, int size, MMUAccessType access_type, int mmu_idx, bool probe, uintptr_t retaddr); |