_MoveFromCoProcessor, _MoveFromCoProcessor2 (Windows Embedded CE 6.0)
1/5/2010
These intrinsic functions read data from ARM coprocessors via the coprocessor data transfer instructions.
Syntax
int _MoveFromCoprocessor(
unsigned int coproc,
unsigned int opcode1,
unsigned int crn,
unsigned int crm,
unsigned int opcode2
);
int _MoveFromCoprocessor2(
unsigned int coproc,
unsigned int opcode1,
unsigned int crn,
unsigned int crm,
unsigned int opcode2
);
Parameters
- coproc
Coprocessor number in the range 0 to 15.
- opcode1
Coprocessor-specific opcode in the range 0 to 7.
- crn
Coprocessor register number in the range 0 to 15,**which specifies the first operand to the instruction.
- crm
Coprocessor register number in the range 0 to 15, which specifies an additional source or destination operand*.*
- opcode2
Additional coprocessor-specific opcode in the range 0 to 7*.*
Return Values
The value read from the coprocessor.
Remarks
The values of all five parameters to this intrinsic must be constant expressions known at compile time.
_MoveFromCoprocessor uses the MRC instruction; _MoveFromCoprocessor2 uses MRC2. The parameters correspond to bitfields encoded directly into the instruction word. The interpretation of the parameters is coprocessor-dependent. For more information, see the manual for the coprocessor in question.
These intrinsics are not available when generating Thumb instructions, such as when /QRthumb is specified.
Requirements
| Architecture | ARM |
| Header | armintr.h |
| Routine | _MoveFromCoprocessor, _MoveFromCoprocessor2 |