diff options
Diffstat (limited to 'include/exec/memory.h')
| -rw-r--r-- | include/exec/memory.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/exec/memory.h b/include/exec/memory.h index 37f8e78e71..8503685455 100644 --- a/include/exec/memory.h +++ b/include/exec/memory.h @@ -137,6 +137,15 @@ struct MemoryRegionOps { uint64_t data, unsigned size, MemTxAttrs attrs); + /* Instruction execution pre-callback: + * @addr is the address of the access relative to the @mr. + * @size is the size of the area returned by the callback. + * @offset is the location of the pointer inside @mr. + * + * Returns a pointer to a location which contains guest code. + */ + void *(*request_ptr)(void *opaque, hwaddr addr, unsigned *size, + unsigned *offset); enum device_endian endianness; /* Guest-visible constraints: */ @@ -1363,6 +1372,32 @@ void memory_global_dirty_log_stop(void); void mtree_info(fprintf_function mon_printf, void *f, bool flatview); /** + * memory_region_request_mmio_ptr: request a pointer to an mmio + * MemoryRegion. If it is possible map a RAM MemoryRegion with this pointer. + * When the device wants to invalidate the pointer it will call + * memory_region_invalidate_mmio_ptr. + * + * @mr: #MemoryRegion to check + * @addr: address within that region + * + * Returns true on success, false otherwise. + */ +bool memory_region_request_mmio_ptr(MemoryRegion *mr, hwaddr addr); + +/** + * memory_region_invalidate_mmio_ptr: invalidate the pointer to an mmio + * previously requested. + * In the end that means that if something wants to execute from this area it + * will need to request the pointer again. + * + * @mr: #MemoryRegion associated to the pointer. + * @addr: address within that region + * @size: size of that area. + */ +void memory_region_invalidate_mmio_ptr(MemoryRegion *mr, hwaddr offset, + unsigned size); + +/** * memory_region_dispatch_read: perform a read directly to the specified * MemoryRegion. * |