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| | TEMU_IFACE_REFERENCE_TYPE (temu_MemAccess) |
| |
| | TEMU_IFACE_REFERENCE_TYPE (temu_Memory) |
| |
| | TEMU_IFACE_REFERENCE_TYPE (temu_MemoryMap) |
| |
| int | temu_mapMemorySpace (void *Obj, uint64_t Addr, uint64_t Len, void *MemObj) |
| |
| int | temu_mapMemorySpaceFlags (void *Obj, uint64_t Addr, uint64_t Len, void *MemObj, uint32_t Flags) |
| |
| void | temu_setMemAttr (void *Obj, uint64_t Addr, uint64_t Len, temu_MemoryAttr Attr) |
| |
| void | temu_clearMemAttr (void *Obj, uint64_t Addr, uint64_t Len, temu_MemoryAttr Attr) |
| |
| #define TEMU_MEM_ACCESS_IFACE_TYPE "MemAccessIface" |
| #define TEMU_MEMORY_IFACE_TYPE "MemoryIface" |
| #define TEMU_MEMORY_MAP_IFACE_TYPE "MemoryMapIface" |
| #define TEMU_MT_BYPASS_CACHE (1 << 1) |
| #define TEMU_MT_CACHE_HIT (1 << 4) |
| #define TEMU_MT_CACHEABLE 1 |
| #define TEMU_MT_FAILED (1 << 3) |
| #define TEMU_MT_FORCE_CACHE_MISS (1 << 2) |
| #define TEMU_MT_PRIV_HYPER (3 << 5) |
| #define TEMU_MT_PRIV_MASK (7 << 5) |
| #define TEMU_MT_PRIV_SUPER (2 << 5) |
| #define TEMU_MT_PRIV_USER (1 << 5) |
| #define TEMU_MT_PROBE (1 << 8) |
Memory access interface implemented by all memory mapped devices Exposed to the emulator core by a memory object.
For objects which have actual memory (not just registers) This is for the simulator (not the emu core). The procedures should write the data given in bytes to the given physical offset. The offset is a 64 bit uint to support 64 bit targets. The interface is used for example by DMA transactions.
The size argument is in bytes.
The swap argument is used to swap bytes to the host endianess. Specify the log size of the read data types.
- 0: We are reading bytes (bytes will be in target memory order)
- 1: We are reading half words (will be swapped to host order)
- 2: We are reading words (will be swapped)
- 3: We are reading double words (will be swapped) With 0 for swap, we are basically reading a byte array
readBytes and writeBytes should return the number of bytes read / written or negative on error.
Standard interface for memory space objects
Users should not implement their own memory spaces. No stability guarantees are made about this interface at the moment.
Generic memory transaction.
This type is kept in sync with the emulator core. The layout is guaranteed. and will remain as is, although more fields may be added (at the bottom).
When the emulator core issues a memory transaction (assuming no ATC hit), the core allocates this structure on the stack and fills in some of the fields with default values. The memory transaction is passed by pointer or reference. By filling in the different fields you can adapt the result of the memory transaction.
| Enumerator |
|---|
| teIT_Cpu |
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| teIT_Device |
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| teIT_Unknown |
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Definition at line 27 of file Memory.h.
| Enumerator |
|---|
| teMK_RAM |
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| teMK_ROM |
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| teMK_MMIO |
|
Definition at line 21 of file Memory.h.
| void temu_clearMemAttr |
( |
void * |
Obj, |
|
|
uint64_t |
Addr, |
|
|
uint64_t |
Len, |
|
|
temu_MemoryAttr |
Attr |
|
) |
| |
Clear attribute on memory space location
- Parameters
-
| Obj | The memory space object |
| Addr | Physical address where to map the device |
| Len | Length in bytes of area where the attribute should be set. |
| Attr | The attribute to clear. |
| TEMU_IFACE_REFERENCE_TYPE |
( |
temu_MemAccess |
| ) |
|
| TEMU_IFACE_REFERENCE_TYPE |
( |
temu_Memory |
| ) |
|
| TEMU_IFACE_REFERENCE_TYPE |
( |
temu_MemoryMap |
| ) |
|
| int temu_mapMemorySpace |
( |
void * |
Obj, |
|
|
uint64_t |
Addr, |
|
|
uint64_t |
Len, |
|
|
void * |
MemObj |
|
) |
| |
Map memory object into address space
- Parameters
-
| Obj | The memory space object |
| Addr | Physical address where to map the device |
| Len | Length in bytes of area where the object is mapped. |
| MemObj | The memory object. This object must correspond to the MemAccessIface |
- Returns
- Zero on success, other values indicates that the mapping failed
| int temu_mapMemorySpaceFlags |
( |
void * |
Obj, |
|
|
uint64_t |
Addr, |
|
|
uint64_t |
Len, |
|
|
void * |
MemObj, |
|
|
uint32_t |
Flags |
|
) |
| |
Map memory object into address space with flags
- Parameters
-
| Obj | The memory space object |
| Addr | Physical address where to map the device |
| Len | Length in bytes of area where the object is mapped. |
| MemObj | The memory object. This object must correspond to the MemAccessIface |
| Flags | Sticky flags for memory accesses to that object (e.g. cachable) |
- Returns
- Zero on success, other values indicates that the mapping failed
| void temu_setMemAttr |
( |
void * |
Obj, |
|
|
uint64_t |
Addr, |
|
|
uint64_t |
Len, |
|
|
temu_MemoryAttr |
Attr |
|
) |
| |
Set attribute on memory space location
- Parameters
-
| Obj | The memory space object |
| Addr | Physical address where to map the device |
| Len | Length in bytes of area where the attribute should be set. |
| Attr | The attribute to set. |
1.8.5 
