Access to dedicated instructions. More...
Modules | |
CMSIS SIMD Intrinsics | |
Access to dedicated SIMD instructions. | |
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() __isb(0xF) |
Instruction Synchronization Barrier. More... | |
#define | __DSB() __dsb(0xF) |
Data Synchronization Barrier. More... | |
#define | __DMB() __dmb(0xF) |
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_RW_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(value) __builtin_bswap32(value) |
Reverse byte order (32 bit) More... | |
#define | __REV16(value) __ROR(__REV(value), 16) |
Reverse byte order (16 bit) More... | |
#define | __REVSH(value) (int16_t)__builtin_bswap16(value) |
Reverse byte order (16 bit) More... | |
#define | __BKPT(value) __ASM volatile ("bkpt "#value) |
Breakpoint. More... | |
#define | __RBIT __builtin_arm_rbit |
Reverse bit order of value. 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(value) __builtin_bswap32(value) |
Reverse byte order (32 bit) More... | |
#define | __REV16(value) __ROR(__REV(value), 16) |
Reverse byte order (16 bit) More... | |
#define | __REVSH(value) (int16_t)__builtin_bswap16(value) |
Reverse byte order (16 bit) More... | |
#define | __BKPT(value) __ASM volatile ("bkpt "#value) |
Breakpoint. More... | |
#define | __RBIT __builtin_arm_rbit |
Reverse bit order of value. More... | |
#define | __CMSIS_GCC_OUT_REG(r) "=r" (r) |
#define | __CMSIS_GCC_RW_REG(r) "+r" (r) |
#define | __CMSIS_GCC_USE_REG(r) "r" (r) |
#define | __NOP() __ASM volatile ("nop") |
No Operation. More... | |
#define | __WFI() __ASM volatile ("wfi":::"memory") |
Wait For Interrupt. More... | |
#define | __WFE() __ASM volatile ("wfe":::"memory") |
Wait For Event. More... | |
#define | __SEV() __ASM volatile ("sev") |
Send Event. More... | |
#define | __BKPT(value) __ASM volatile ("bkpt "#value) |
Breakpoint. More... | |
Functions | |
static __inline __asm uint32_t | __REV16 (uint32_t value) |
Reverse byte order (16 bit) More... | |
static __inline __asm int16_t | __REVSH (int16_t value) |
Reverse byte order (16 bit) More... | |
static __inline uint32_t | __RBIT (uint32_t value) |
Reverse bit order of value. More... | |
static __inline int32_t | __SSAT (int32_t val, uint32_t sat) |
Signed Saturate. More... | |
static __inline uint32_t | __USAT (int32_t val, uint32_t sat) |
Unsigned Saturate. More... | |
static __inline uint32_t | __ROR (uint32_t op1, uint32_t op2) |
Rotate Right in unsigned value (32 bit) More... | |
static __inline uint8_t | __CLZ (uint32_t value) |
Count leading zeros. More... | |
static void | __ISB (void) |
Instruction Synchronization Barrier. More... | |
static void | __DSB (void) |
Data Synchronization Barrier. More... | |
static void | __DMB (void) |
Data Memory Barrier. More... | |
static uint32_t | __REV (uint32_t value) |
Reverse byte order (32 bit) More... | |
Access to dedicated instructions.
#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.
[in] | value | is ignored by the processor. If required, a debugger can use it to store additional information about the breakpoint. |
#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.
[in] | value | is ignored by the processor. If required, a debugger can use it to store additional information about the breakpoint. |
#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.
[in] | value | is ignored by the processor. If required, a debugger can use it to store additional information about the breakpoint. |
#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.
[in] | value | is ignored by the processor. If required, a debugger can use it to store additional information about the breakpoint. |
#define __CLZ __clz |
Count leading zeros.
Counts the number of leading zeros of a data value.
[in] | value | Value to count the leading zeros |
#define __DMB | ( | void | ) | __dmb(0xF) |
Data Memory Barrier.
Ensures the apparent order of the explicit memory operations before and after the instruction, without ensuring their completion.
#define __DMB | ( | void | ) | __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.
#define __DMB | ( | void | ) | __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.
#define __DSB | ( | void | ) | __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.
#define __DSB | ( | void | ) | __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.
#define __DSB | ( | void | ) | __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.
#define __ISB | ( | void | ) | __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.
#define __ISB | ( | void | ) | __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.
#define __ISB | ( | void | ) | __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.
#define __NOP __nop |
No Operation.
No Operation does nothing. This instruction can be used for code alignment purposes.
#define __NOP __builtin_arm_nop |
No Operation.
No Operation does nothing. This instruction can be used for code alignment purposes.
#define __NOP __builtin_arm_nop |
No Operation.
No Operation does nothing. This instruction can be used for code alignment purposes.
#define __NOP | ( | ) | __ASM volatile ("nop") |
No Operation.
No Operation does nothing. This instruction can be used for code alignment purposes.
#define __RBIT __builtin_arm_rbit |
Reverse bit order of value.
Reverses the bit order of the given value.
[in] | value | Value to reverse |
#define __RBIT __builtin_arm_rbit |
Reverse bit order of value.
Reverses the bit order of the given value.
[in] | value | Value to reverse |
#define __REV __rev |
Reverse byte order (32 bit)
Reverses the byte order in unsigned integer value. For example, 0x12345678 becomes 0x78563412.
[in] | value | Value to reverse |
#define __REV | ( | value | ) | __builtin_bswap32(value) |
Reverse byte order (32 bit)
Reverses the byte order in unsigned integer value. For example, 0x12345678 becomes 0x78563412.
[in] | value | Value to reverse |
#define __REV | ( | value | ) | __builtin_bswap32(value) |
Reverse byte order (32 bit)
Reverses the byte order in unsigned integer value. For example, 0x12345678 becomes 0x78563412.
[in] | value | Value to reverse |
Reverse byte order (16 bit)
Reverses the byte order within each halfword of a word. For example, 0x12345678 becomes 0x34127856.
[in] | value | Value to reverse |
Reverse byte order (16 bit)
Reverses the byte order within each halfword of a word. For example, 0x12345678 becomes 0x34127856.
[in] | value | Value to reverse |
#define __REVSH | ( | value | ) | (int16_t)__builtin_bswap16(value) |
Reverse byte order (16 bit)
Reverses the byte order in a 16-bit value and returns the signed 16-bit result. For example, 0x0080 becomes 0x8000.
[in] | value | Value to reverse |
#define __REVSH | ( | value | ) | (int16_t)__builtin_bswap16(value) |
Reverse byte order (16 bit)
Reverses the byte order in a 16-bit value and returns the signed 16-bit result. For example, 0x0080 becomes 0x8000.
[in] | value | Value to reverse |
#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.
[in] | op1 | Value to rotate |
[in] | op2 | Number of Bits to rotate |
#define __SEV __sev |
Send Event.
Send Event is a hint instruction. It causes an event to be signaled to the CPU.
#define __SEV __builtin_arm_sev |
Send Event.
Send Event is a hint instruction. It causes an event to be signaled to the CPU.
#define __SEV __builtin_arm_sev |
Send Event.
Send Event is a hint instruction. It causes an event to be signaled to the CPU.
#define __SEV | ( | ) | __ASM volatile ("sev") |
Send Event.
Send Event is a hint instruction. It causes an event to be signaled to the CPU.
#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.
#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.
#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.
#define __WFE | ( | ) | __ASM volatile ("wfe":::"memory") |
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.
#define __WFI __wfi |
Wait For Interrupt.
Wait For Interrupt is a hint instruction that suspends execution until one of a number of events occurs.
#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.
#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.
#define __WFI | ( | ) | __ASM volatile ("wfi":::"memory") |
Wait For Interrupt.
Wait For Interrupt is a hint instruction that suspends execution until one of a number of events occurs.
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Count leading zeros.
Counts the number of leading zeros of a data value.
[in] | value | Value to count the leading zeros |
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Data Memory Barrier.
Ensures the apparent order of the explicit memory operations before and after the instruction, without ensuring their completion.
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Data Synchronization Barrier.
Acts as a special kind of Data Memory Barrier. It completes when all explicit memory accesses before this instruction complete.
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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.
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Reverse bit order of value.
Reverses the bit order of the given value.
[in] | value | Value to reverse |
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Reverse byte order (32 bit)
Reverses the byte order in unsigned integer value. For example, 0x12345678 becomes 0x78563412.
[in] | value | Value to reverse |
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Reverse byte order (16 bit)
Reverses the byte order within each halfword of a word. For example, 0x12345678 becomes 0x34127856.
[in] | value | Value to reverse |
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Reverse byte order (16 bit)
Reverses the byte order in a 16-bit value and returns the signed 16-bit result. For example, 0x0080 becomes 0x8000.
[in] | value | Value to reverse |
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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.
[in] | op1 | Value to rotate |
[in] | op2 | Number of Bits to rotate |
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Signed Saturate.
Saturates a signed value.
[in] | value | Value to be saturated |
[in] | sat | Bit position to saturate to (1..32) |
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Unsigned Saturate.
Saturates an unsigned value.
[in] | value | Value to be saturated |
[in] | sat | Bit position to saturate to (0..31) |