Macros
#define	__NOP __nop
	No Operation. More...

#define	__WFI __wfi
	Wait For Interrupt. More...

#define	__WFE __wfe
	Wait For Event. More...

#define	__SEV __sev
	Send Event. More...

#define	__ISB()
	Instruction Synchronization Barrier. More...

#define	__DSB()
	Data Synchronization Barrier. More...

#define	__DMB()
	Data Memory Barrier. More...

#define	__REV __rev
	Reverse byte order (32 bit) More...

#define	__ROR __ror
	Rotate Right in unsigned value (32 bit) More...

#define	__BKPT(value) __breakpoint(value)
	Breakpoint. More...

#define	__CLZ __clz
	Count leading zeros. More...

#define	__CMSIS_GCC_OUT_REG(r) "=r" (r)

#define	__CMSIS_GCC_USE_REG(r) "r" (r)

#define	__NOP __builtin_arm_nop
	No Operation. More...

#define	__WFI __builtin_arm_wfi
	Wait For Interrupt. More...

#define	__WFE __builtin_arm_wfe
	Wait For Event. More...

#define	__SEV __builtin_arm_sev
	Send Event. More...

#define	__ISB() __builtin_arm_isb(0xF);
	Instruction Synchronization Barrier. More...

#define	__DSB() __builtin_arm_dsb(0xF);
	Data Synchronization Barrier. More...

#define	__DMB() __builtin_arm_dmb(0xF);
	Data Memory Barrier. More...

#define	__REV __builtin_bswap32
	Reverse byte order (32 bit) More...

#define	__REV16 __builtin_bswap16 /* ToDo: ARMCC_V6: check if __builtin_bswap16 could be used */
	Reverse byte order (16 bit) More...

#define	__BKPT(value) __ASM volatile ("bkpt "#value)
	Breakpoint. More...

#define	__CLZ __builtin_clz
	Count leading zeros. More...

#define	__CMSIS_GCC_OUT_REG(r) "=r" (r)

#define	__CMSIS_GCC_USE_REG(r) "r" (r)

#define	__BKPT(value) __ASM volatile ("bkpt "#value)
	Breakpoint. More...

#define	__CLZ __builtin_clz
	Count leading zeros. More...

Functions
	__attribute__ ((section(".rev16_text"))) __STATIC_INLINE __ASM uint32_t __REV16(uint32_t value)
	Reverse byte order (16 bit) More...

	__attribute__ ((section(".revsh_text"))) __STATIC_INLINE __ASM int32_t __REVSH(int32_t value)
	Reverse byte order in signed short value. More...

	__attribute__ ((always_inline)) __STATIC_INLINE uint32_t __RBIT(uint32_t value)
	Reverse bit order of value. More...

Variables
uint32_t	op2

uint32_t	op2

Detailed Description

Access to dedicated instructions

Macro Definition Documentation

◆ __BKPT [1/3]

#define __BKPT ( value ) __breakpoint(value)

Breakpoint.

Causes the processor to enter Debug state. Debug tools can use this to investigate system state when the instruction at a particular address is reached.

Parameters

[in] value is ignored by the processor. If required, a debugger can use it to store additional information about the breakpoint.

◆ __BKPT [2/3]

#define __BKPT ( value ) __ASM volatile ("bkpt "#value)

Breakpoint.

Causes the processor to enter Debug state. Debug tools can use this to investigate system state when the instruction at a particular address is reached.

Parameters

[in] value is ignored by the processor. If required, a debugger can use it to store additional information about the breakpoint.

◆ __BKPT [3/3]

#define __BKPT ( value ) __ASM volatile ("bkpt "#value)

Breakpoint.

Causes the processor to enter Debug state. Debug tools can use this to investigate system state when the instruction at a particular address is reached.

Parameters

[in] value is ignored by the processor. If required, a debugger can use it to store additional information about the breakpoint.

◆ __CLZ [1/3]

#define __CLZ __clz

Count leading zeros.

Counts the number of leading zeros of a data value.

Parameters

[in] value Value to count the leading zeros

Returns: number of leading zeros in value

◆ __CLZ [2/3]

#define __CLZ __builtin_clz

Count leading zeros.

Counts the number of leading zeros of a data value.

Parameters

[in] value Value to count the leading zeros

Returns: number of leading zeros in value

◆ __CLZ [3/3]

#define __CLZ __builtin_clz

Count leading zeros.

Counts the number of leading zeros of a data value.

Parameters

[in] value Value to count the leading zeros

Returns: number of leading zeros in value

◆ __DMB [1/2]

#define __DMB ( )

Value:

do {\
                   __schedule_barrier();\
                   __dmb(0xF);\
                   __schedule_barrier();\
                } while (0U)

Data Memory Barrier.

Ensures the apparent order of the explicit memory operations before and after the instruction, without ensuring their completion.

◆ __DMB [2/2]

#define __DMB ( ) __builtin_arm_dmb(0xF);

Data Memory Barrier.

Ensures the apparent order of the explicit memory operations before and after the instruction, without ensuring their completion.

◆ __DSB [1/2]

#define __DSB ( )

Value:

do {\
                   __schedule_barrier();\
                   __dsb(0xF);\
                   __schedule_barrier();\
                } while (0U)

Data Synchronization Barrier.

Acts as a special kind of Data Memory Barrier. It completes when all explicit memory accesses before this instruction complete.

◆ __DSB [2/2]

#define __DSB ( ) __builtin_arm_dsb(0xF);

Data Synchronization Barrier.

Acts as a special kind of Data Memory Barrier. It completes when all explicit memory accesses before this instruction complete.

◆ __ISB [1/2]

#define __ISB ( )

Value:

do {\
                   __schedule_barrier();\
                   __isb(0xF);\
                   __schedule_barrier();\
                } while (0U)

Instruction Synchronization Barrier.

Instruction Synchronization Barrier flushes the pipeline in the processor, so that all instructions following the ISB are fetched from cache or memory, after the instruction has been completed.

◆ __ISB [2/2]

#define __ISB ( ) __builtin_arm_isb(0xF);

Instruction Synchronization Barrier.

Instruction Synchronization Barrier flushes the pipeline in the processor, so that all instructions following the ISB are fetched from cache or memory, after the instruction has been completed.

◆ __NOP [1/2]

#define __NOP __nop

No Operation.

No Operation does nothing. This instruction can be used for code alignment purposes.

◆ __NOP [2/2]

#define __NOP __builtin_arm_nop

No Operation.

No Operation does nothing. This instruction can be used for code alignment purposes.

◆ __REV [1/2]

#define __REV __rev

Reverse byte order (32 bit)

Reverses the byte order in integer value.

Parameters

[in] value Value to reverse

Returns: Reversed value

◆ __REV [2/2]

#define __REV __builtin_bswap32

Reverse byte order (32 bit)

Reverses the byte order in integer value.

Parameters

[in] value Value to reverse

Returns: Reversed value

◆ __REV16

#define __REV16 __builtin_bswap16 /* ToDo: ARMCC_V6: check if __builtin_bswap16 could be used */

Reverse byte order (16 bit)

Reverses the byte order in two unsigned short values.

Parameters

[in] value Value to reverse

Returns: Reversed value

◆ __ROR

#define __ROR __ror

Rotate Right in unsigned value (32 bit)

Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.

Parameters

[in]	value	Value to rotate
[in]	value	Number of Bits to rotate

Returns: Rotated value

◆ __SEV [1/2]

#define __SEV __sev

Send Event.

Send Event is a hint instruction. It causes an event to be signaled to the CPU.

◆ __SEV [2/2]

#define __SEV __builtin_arm_sev

Send Event.

Send Event is a hint instruction. It causes an event to be signaled to the CPU.

◆ __WFE [1/2]

#define __WFE __wfe

Wait For Event.

Wait For Event is a hint instruction that permits the processor to enter a low-power state until one of a number of events occurs.

◆ __WFE [2/2]

#define __WFE __builtin_arm_wfe

Wait For Event.

Wait For Event is a hint instruction that permits the processor to enter a low-power state until one of a number of events occurs.

◆ __WFI [1/2]

#define __WFI __wfi

Wait For Interrupt.

Wait For Interrupt is a hint instruction that suspends execution until one of a number of events occurs.

◆ __WFI [2/2]

#define __WFI __builtin_arm_wfi

Wait For Interrupt.

Wait For Interrupt is a hint instruction that suspends execution until one of a number of events occurs.

Function Documentation

◆ attribute() [1/3]

__attribute__ ( (section(".rev16_text")) )

Reverse byte order (16 bit)

Reverses the byte order in two unsigned short values.

Parameters

[in] value Value to reverse

Returns: Reversed value

◆ attribute() [2/3]

__attribute__ ( (section(".revsh_text")) )

Reverse byte order in signed short value.

Reverses the byte order in a signed short value with sign extension to integer.

Parameters

[in] value Value to reverse

Returns: Reversed value

◆ attribute() [3/3]

__attribute__ ( (always_inline) )

Reverse bit order of value.

Enable IRQ Interrupts.

Set Priority Mask.

Get Priority Mask.

Set Main Stack Pointer.

Get Main Stack Pointer.

Set Process Stack Pointer.

Get Process Stack Pointer.

Get xPSR Register.

Get APSR Register.

Get IPSR Register.

Set Control Register.

Get Control Register.

Disable IRQ Interrupts.

Reverse byte order (16 bit)

Reverse byte order (32 bit)

Data Memory Barrier.

Data Synchronization Barrier.

Instruction Synchronization Barrier.

Send Event.

Wait For Event.

Wait For Interrupt.

No Operation.

Rotate Right in unsigned value (32 bit)

Reverse byte order in signed short value.

Reverses the bit order of the given value.

Parameters

[in] value Value to reverse

Returns: Reversed value

Reverses the byte order in a signed short value with sign extension to integer.

Parameters

[in] value Value to reverse

Returns: Reversed value

Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.

Parameters

[in]	op1	Value to rotate
[in]	op2	Number of Bits to rotate

Returns: Rotated value

No Operation does nothing. This instruction can be used for code alignment purposes.

Wait For Interrupt is a hint instruction that suspends execution until one of a number of events occurs.

Wait For Event is a hint instruction that permits the processor to enter a low-power state until one of a number of events occurs.

Send Event is a hint instruction. It causes an event to be signaled to the CPU.

Instruction Synchronization Barrier flushes the pipeline in the processor, so that all instructions following the ISB are fetched from cache or memory, after the instruction has been completed.

Acts as a special kind of Data Memory Barrier. It completes when all explicit memory accesses before this instruction complete.

Ensures the apparent order of the explicit memory operations before and after the instruction, without ensuring their completion.

Reverses the byte order in integer value.

Parameters

[in] value Value to reverse

Returns: Reversed value

Reverses the byte order in two unsigned short values.

Parameters

[in] value Value to reverse

Returns: Reversed value

Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.

Parameters

[in]	value	Value to rotate
[in]	value	Number of Bits to rotate

Returns: Rotated value

Disables IRQ interrupts by setting the I-bit in the CPSR. Can only be executed in Privileged modes.

Returns the content of the Control Register.

Returns: Control Register value

Writes the given value to the Control Register.

Parameters

[in] control Control Register value to set

Returns the content of the IPSR Register.

Returns: IPSR Register value

Returns the content of the APSR Register.

Returns: APSR Register value

Returns the content of the xPSR Register.

Returns: xPSR Register value

Returns the current value of the Process Stack Pointer (PSP).

Returns: PSP Register value

Assigns the given value to the Process Stack Pointer (PSP).

Parameters

[in] topOfProcStack Process Stack Pointer value to set

Returns the current value of the Main Stack Pointer (MSP).

Returns: MSP Register value

Assigns the given value to the Main Stack Pointer (MSP).

Parameters

[in] topOfMainStack Main Stack Pointer value to set

Returns the current state of the priority mask bit from the Priority Mask Register.

Returns: Priority Mask value

Assigns the given value to the Priority Mask Register.

Parameters

[in] priMask Priority Mask

Enables IRQ interrupts by clearing the I-bit in the CPSR. Can only be executed in Privileged modes.

Variable Documentation

◆ op2 [1/2]

uint32_t op2

Initial value:

{

return (op1 >> op2) | (op1 << (32U - op2))

◆ op2 [2/2]

uint32_t op2

Initial value:

{

return (op1 >> op2) | (op1 << (32U - op2))

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ __BKPT [1/3]

◆ __BKPT [2/3]

◆ __BKPT [3/3]

◆ __CLZ [1/3]

◆ __CLZ [2/3]

◆ __CLZ [3/3]

◆ __DMB [1/2]

◆ __DMB [2/2]

◆ __DSB [1/2]

◆ __DSB [2/2]

◆ __ISB [1/2]

◆ __ISB [2/2]

◆ __NOP [1/2]

◆ __NOP [2/2]

◆ __REV [1/2]

◆ __REV [2/2]

◆ __REV16

◆ __ROR

◆ __SEV [1/2]

◆ __SEV [2/2]

◆ __WFE [1/2]

◆ __WFE [2/2]

◆ __WFI [1/2]

◆ __WFI [2/2]

Function Documentation

◆ __attribute__() [1/3]

◆ __attribute__() [2/3]

◆ __attribute__() [3/3]

Variable Documentation

◆ op2 [1/2]

◆ op2 [2/2]

◆ attribute() [1/3]

◆ attribute() [2/3]

◆ attribute() [3/3]