CMSIS-Core (Cortex-A)  
CMSIS-Core support for Cortex-A processor-based devices
 
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Coprocessor Access Control Register (CPACR)

The CPACR controls access to coprocessors CP0 to CP13. More...

Content

 CPACR Bits
 Bit position and mask macros.
 
 CPACR CP field values
 Valid values for CPACR CP field.
 

Data Structures

struct  CPACR_Type
 Bit field declaration for CPACR layout. More...
 

Functions

__STATIC_FORCEINLINE uint32_t __get_CPACR (void)
 Get CPACR.
 
__STATIC_FORCEINLINE void __set_CPACR (uint32_t cpacr)
 Set CPACR.
 

Description

The CPACR controls access to coprocessors CP0 to CP13.

The CPACR characteristics are:

Bits Name Function
[31] ASEDIS Disable Advanced SIMD functionality.
[30] D32DIS Disable use of D16-D31 of the Floating-point Extension register file.
[29] - Reserved.
[28] TRCDIS Disable CP14 access to trace registers.
[27:26] CP13 Access rights for coprocessor 13.
[25:24] CP12 Access rights for coprocessor 12.
[23:22] CP11 Access rights for coprocessor 11.
[21:20] CP10 Access rights for coprocessor 10.
[19:18] CP9 Access rights for coprocessor 9.
[17:16] CP8 Access rights for coprocessor 8.
[15:14] CP7 Access rights for coprocessor 7.
[13:12] CP6 Access rights for coprocessor 6.
[11:10] CP5 Access rights for coprocessor 5.
[9:8] CP4 Access rights for coprocessor 4.
[7:6] CP3 Access rights for coprocessor 3.
[5:4] CP2 Access rights for coprocessor 2.
[3:2] CP1 Access rights for coprocessor 1.
[1:0] CP0 Access rights for coprocessor 0.

Consider __get_CPACR and __set_CPACR to access this register.

Function Documentation

◆ __get_CPACR()

__STATIC_INLINE uint32_t __get_CPACR ( void  )

Get CPACR.

Returns
Coprocessor Access Control register value

This function returns the current value of the Coprocessor Access Control Register (CPACR).

◆ __set_CPACR()

__STATIC_INLINE void __set_CPACR ( uint32_t  cpacr)

Set CPACR.

Parameters
[in]cpacrCoprocessor Access Control value to set

This function assigns the given value to the Coprocessor Access Control Register (CPACR).