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cmsis_gcc.h
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cmsis_gcc.h
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/**************************************************************************//**
* @file cmsis_gcc.h
* @brief CMSIS compiler GCC header file
* @version V5.4.2
* @date 17. December 2022
******************************************************************************/
/*
* Copyright (c) 2009-2021 Arm Limited. All rights reserved.
*
* SPDX-License-Identifier: Apache-2.0
*
* Licensed under the Apache License, Version 2.0 (the License); you may
* not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an AS IS BASIS, WITHOUT
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef __CMSIS_GCC_H
#define __CMSIS_GCC_H
/* ignore some GCC warnings */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wsign-conversion"
#pragma GCC diagnostic ignored "-Wconversion"
#pragma GCC diagnostic ignored "-Wunused-parameter"
/* Fallback for __has_builtin */
#ifndef __has_builtin
#define __has_builtin(x) (0)
#endif
/* CMSIS compiler specific defines */
#ifndef __ASM
#define __ASM __asm
#endif
#ifndef __INLINE
#define __INLINE inline
#endif
#ifndef __STATIC_INLINE
#define __STATIC_INLINE static inline
#endif
#ifndef __STATIC_FORCEINLINE
#define __STATIC_FORCEINLINE __attribute__((always_inline)) static inline
#endif
#ifndef __NO_RETURN
#define __NO_RETURN __attribute__((__noreturn__))
#endif
#ifndef __USED
#define __USED __attribute__((used))
#endif
#ifndef __WEAK
#define __WEAK __attribute__((weak))
#endif
#ifndef __PACKED
#define __PACKED __attribute__((packed, aligned(1)))
#endif
#ifndef __PACKED_STRUCT
#define __PACKED_STRUCT struct __attribute__((packed, aligned(1)))
#endif
#ifndef __PACKED_UNION
#define __PACKED_UNION union __attribute__((packed, aligned(1)))
#endif
#ifndef __UNALIGNED_UINT32 /* deprecated */
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpacked"
#pragma GCC diagnostic ignored "-Wattributes"
struct __attribute__((packed)) T_UINT32 { uint32_t v; };
#pragma GCC diagnostic pop
#define __UNALIGNED_UINT32(x) (((struct T_UINT32 *)(x))->v)
#endif
#ifndef __UNALIGNED_UINT16_WRITE
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpacked"
#pragma GCC diagnostic ignored "-Wattributes"
__PACKED_STRUCT T_UINT16_WRITE { uint16_t v; };
#pragma GCC diagnostic pop
#define __UNALIGNED_UINT16_WRITE(addr, val) (void)((((struct T_UINT16_WRITE *)(void *)(addr))->v) = (val))
#endif
#ifndef __UNALIGNED_UINT16_READ
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpacked"
#pragma GCC diagnostic ignored "-Wattributes"
__PACKED_STRUCT T_UINT16_READ { uint16_t v; };
#pragma GCC diagnostic pop
#define __UNALIGNED_UINT16_READ(addr) (((const struct T_UINT16_READ *)(const void *)(addr))->v)
#endif
#ifndef __UNALIGNED_UINT32_WRITE
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpacked"
#pragma GCC diagnostic ignored "-Wattributes"
__PACKED_STRUCT T_UINT32_WRITE { uint32_t v; };
#pragma GCC diagnostic pop
#define __UNALIGNED_UINT32_WRITE(addr, val) (void)((((struct T_UINT32_WRITE *)(void *)(addr))->v) = (val))
#endif
#ifndef __UNALIGNED_UINT32_READ
#pragma GCC diagnostic push
#pragma GCC diagnostic ignored "-Wpacked"
#pragma GCC diagnostic ignored "-Wattributes"
__PACKED_STRUCT T_UINT32_READ { uint32_t v; };
#pragma GCC diagnostic pop
#define __UNALIGNED_UINT32_READ(addr) (((const struct T_UINT32_READ *)(const void *)(addr))->v)
#endif
#ifndef __ALIGNED
#define __ALIGNED(x) __attribute__((aligned(x)))
#endif
#ifndef __RESTRICT
#define __RESTRICT __restrict
#endif
#ifndef __COMPILER_BARRIER
#define __COMPILER_BARRIER() __ASM volatile("":::"memory")
#endif
#ifndef __NO_INIT
#define __NO_INIT __attribute__ ((section (".bss.noinit")))
#endif
#ifndef __ALIAS
#define __ALIAS(x) __attribute__ ((alias(x)))
#endif
/* ######################### Startup and Lowlevel Init ######################## */
#ifndef __PROGRAM_START
/**
\brief Initializes data and bss sections
\details This default implementations initialized all data and additional bss
sections relying on .copy.table and .zero.table specified properly
in the used linker script.
*/
__STATIC_FORCEINLINE __NO_RETURN void __cmsis_start(void)
{
extern void _start(void) __NO_RETURN;
typedef struct __copy_table {
uint32_t const* src;
uint32_t* dest;
uint32_t wlen;
} __copy_table_t;
typedef struct __zero_table {
uint32_t* dest;
uint32_t wlen;
} __zero_table_t;
extern const __copy_table_t __copy_table_start__;
extern const __copy_table_t __copy_table_end__;
extern const __zero_table_t __zero_table_start__;
extern const __zero_table_t __zero_table_end__;
for (__copy_table_t const* pTable = &__copy_table_start__; pTable < &__copy_table_end__; ++pTable) {
for(uint32_t i=0u; i<pTable->wlen; ++i) {
pTable->dest[i] = pTable->src[i];
}
}
for (__zero_table_t const* pTable = &__zero_table_start__; pTable < &__zero_table_end__; ++pTable) {
for(uint32_t i=0u; i<pTable->wlen; ++i) {
pTable->dest[i] = 0u;
}
}
_start();
}
#define __PROGRAM_START __cmsis_start
#endif
#ifndef __INITIAL_SP
#define __INITIAL_SP __StackTop
#endif
#ifndef __STACK_LIMIT
#define __STACK_LIMIT __StackLimit
#endif
#ifndef __VECTOR_TABLE
#define __VECTOR_TABLE __Vectors
#endif
#ifndef __VECTOR_TABLE_ATTRIBUTE
#define __VECTOR_TABLE_ATTRIBUTE __attribute__((used, section(".vectors")))
#endif
#if defined (__ARM_FEATURE_CMSE) && (__ARM_FEATURE_CMSE == 3U)
#ifndef __STACK_SEAL
#define __STACK_SEAL __StackSeal
#endif
#ifndef __TZ_STACK_SEAL_SIZE
#define __TZ_STACK_SEAL_SIZE 8U
#endif
#ifndef __TZ_STACK_SEAL_VALUE
#define __TZ_STACK_SEAL_VALUE 0xFEF5EDA5FEF5EDA5ULL
#endif
__STATIC_FORCEINLINE void __TZ_set_STACKSEAL_S (uint32_t* stackTop) {
*((uint64_t *)stackTop) = __TZ_STACK_SEAL_VALUE;
}
#endif
/* ########################## Core Instruction Access ######################### */
/** \defgroup CMSIS_Core_InstructionInterface CMSIS Core Instruction Interface
Access to dedicated instructions
@{
*/
/* Define macros for porting to both thumb1 and thumb2.
* For thumb1, use low register (r0-r7), specified by constraint "l"
* Otherwise, use general registers, specified by constraint "r" */
#if defined (__thumb__) && !defined (__thumb2__)
#define __CMSIS_GCC_OUT_REG(r) "=l" (r)
#define __CMSIS_GCC_RW_REG(r) "+l" (r)
#define __CMSIS_GCC_USE_REG(r) "l" (r)
#else
#define __CMSIS_GCC_OUT_REG(r) "=r" (r)
#define __CMSIS_GCC_RW_REG(r) "+r" (r)
#define __CMSIS_GCC_USE_REG(r) "r" (r)
#endif
/**
\brief No Operation
\details No Operation does nothing. This instruction can be used for code alignment purposes.
*/
#define __NOP() __ASM volatile ("nop")
/**
\brief Wait For Interrupt
\details Wait For Interrupt is a hint instruction that suspends execution until one of a number of events occurs.
*/
#define __WFI() __ASM volatile ("wfi":::"memory")
/**
\brief Wait For Event
\details 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")
/**
\brief Send Event
\details Send Event is a hint instruction. It causes an event to be signaled to the CPU.
*/
#define __SEV() __ASM volatile ("sev")
/**
\brief Instruction Synchronization Barrier
\details 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.
*/
__STATIC_FORCEINLINE void __ISB(void)
{
__ASM volatile ("isb 0xF":::"memory");
}
/**
\brief Data Synchronization Barrier
\details Acts as a special kind of Data Memory Barrier.
It completes when all explicit memory accesses before this instruction complete.
*/
__STATIC_FORCEINLINE void __DSB(void)
{
__ASM volatile ("dsb 0xF":::"memory");
}
/**
\brief Data Memory Barrier
\details Ensures the apparent order of the explicit memory operations before
and after the instruction, without ensuring their completion.
*/
__STATIC_FORCEINLINE void __DMB(void)
{
__ASM volatile ("dmb 0xF":::"memory");
}
/**
\brief Reverse byte order (32 bit)
\details Reverses the byte order in unsigned integer value. For example, 0x12345678 becomes 0x78563412.
\param [in] value Value to reverse
\return Reversed value
*/
__STATIC_FORCEINLINE uint32_t __REV(uint32_t value)
{
#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
return __builtin_bswap32(value);
#else
uint32_t result;
__ASM ("rev %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
return result;
#endif
}
/**
\brief Reverse byte order (16 bit)
\details Reverses the byte order within each halfword of a word. For example, 0x12345678 becomes 0x34127856.
\param [in] value Value to reverse
\return Reversed value
*/
__STATIC_FORCEINLINE uint32_t __REV16(uint32_t value)
{
uint32_t result;
__ASM ("rev16 %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
return result;
}
/**
\brief Reverse byte order (16 bit)
\details Reverses the byte order in a 16-bit value and returns the signed 16-bit result. For example, 0x0080 becomes 0x8000.
\param [in] value Value to reverse
\return Reversed value
*/
__STATIC_FORCEINLINE int16_t __REVSH(int16_t value)
{
#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
return (int16_t)__builtin_bswap16(value);
#else
int16_t result;
__ASM ("revsh %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
return result;
#endif
}
/**
\brief Rotate Right in unsigned value (32 bit)
\details Rotate Right (immediate) provides the value of the contents of a register rotated by a variable number of bits.
\param [in] op1 Value to rotate
\param [in] op2 Number of Bits to rotate
\return Rotated value
*/
__STATIC_FORCEINLINE uint32_t __ROR(uint32_t op1, uint32_t op2)
{
op2 %= 32U;
if (op2 == 0U)
{
return op1;
}
return (op1 >> op2) | (op1 << (32U - op2));
}
/**
\brief Breakpoint
\details 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.
\param [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)
/**
\brief Reverse bit order of value
\details Reverses the bit order of the given value.
\param [in] value Value to reverse
\return Reversed value
*/
__STATIC_FORCEINLINE uint32_t __RBIT(uint32_t value)
{
uint32_t result;
#if ((defined (__ARM_ARCH_7M__ ) && (__ARM_ARCH_7M__ == 1)) || \
(defined (__ARM_ARCH_7EM__ ) && (__ARM_ARCH_7EM__ == 1)) || \
(defined (__ARM_ARCH_8M_MAIN__ ) && (__ARM_ARCH_8M_MAIN__ == 1)) )
__ASM ("rbit %0, %1" : "=r" (result) : "r" (value) );
#else
uint32_t s = (4U /*sizeof(v)*/ * 8U) - 1U; /* extra shift needed at end */
result = value; /* r will be reversed bits of v; first get LSB of v */
for (value >>= 1U; value != 0U; value >>= 1U)
{
result <<= 1U;
result |= value & 1U;
s--;
}
result <<= s; /* shift when v's highest bits are zero */
#endif
return result;
}
/**
\brief Count leading zeros
\details Counts the number of leading zeros of a data value.
\param [in] value Value to count the leading zeros
\return number of leading zeros in value
*/
__STATIC_FORCEINLINE uint8_t __CLZ(uint32_t value)
{
/* Even though __builtin_clz produces a CLZ instruction on ARM, formally
__builtin_clz(0) is undefined behaviour, so handle this case specially.
This guarantees ARM-compatible results if happening to compile on a non-ARM
target, and ensures the compiler doesn't decide to activate any
optimisations using the logic "value was passed to __builtin_clz, so it
is non-zero".
ARM GCC 7.3 and possibly earlier will optimise this test away, leaving a
single CLZ instruction.
*/
if (value == 0U)
{
return 32U;
}
return __builtin_clz(value);
}
#if ((defined (__ARM_ARCH_7M__ ) && (__ARM_ARCH_7M__ == 1)) || \
(defined (__ARM_ARCH_7EM__ ) && (__ARM_ARCH_7EM__ == 1)) || \
(defined (__ARM_ARCH_8M_MAIN__ ) && (__ARM_ARCH_8M_MAIN__ == 1)) || \
(defined (__ARM_ARCH_8M_BASE__ ) && (__ARM_ARCH_8M_BASE__ == 1)) )
/**
\brief LDR Exclusive (8 bit)
\details Executes a exclusive LDR instruction for 8 bit value.
\param [in] ptr Pointer to data
\return value of type uint8_t at (*ptr)
*/
__STATIC_FORCEINLINE uint8_t __LDREXB(volatile uint8_t *addr)
{
uint32_t result;
#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
__ASM volatile ("ldrexb %0, %1" : "=r" (result) : "Q" (*addr) );
#else
/* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
accepted by assembler. So has to use following less efficient pattern.
*/
__ASM volatile ("ldrexb %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
#endif
return ((uint8_t) result); /* Add explicit type cast here */
}
/**
\brief LDR Exclusive (16 bit)
\details Executes a exclusive LDR instruction for 16 bit values.
\param [in] ptr Pointer to data
\return value of type uint16_t at (*ptr)
*/
__STATIC_FORCEINLINE uint16_t __LDREXH(volatile uint16_t *addr)
{
uint32_t result;
#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
__ASM volatile ("ldrexh %0, %1" : "=r" (result) : "Q" (*addr) );
#else
/* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
accepted by assembler. So has to use following less efficient pattern.
*/
__ASM volatile ("ldrexh %0, [%1]" : "=r" (result) : "r" (addr) : "memory" );
#endif
return ((uint16_t) result); /* Add explicit type cast here */
}
/**
\brief LDR Exclusive (32 bit)
\details Executes a exclusive LDR instruction for 32 bit values.
\param [in] ptr Pointer to data
\return value of type uint32_t at (*ptr)
*/
__STATIC_FORCEINLINE uint32_t __LDREXW(volatile uint32_t *addr)
{
uint32_t result;
__ASM volatile ("ldrex %0, %1" : "=r" (result) : "Q" (*addr) );
return(result);
}
/**
\brief STR Exclusive (8 bit)
\details Executes a exclusive STR instruction for 8 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
\return 0 Function succeeded
\return 1 Function failed
*/
__STATIC_FORCEINLINE uint32_t __STREXB(uint8_t value, volatile uint8_t *addr)
{
uint32_t result;
__ASM volatile ("strexb %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
return(result);
}
/**
\brief STR Exclusive (16 bit)
\details Executes a exclusive STR instruction for 16 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
\return 0 Function succeeded
\return 1 Function failed
*/
__STATIC_FORCEINLINE uint32_t __STREXH(uint16_t value, volatile uint16_t *addr)
{
uint32_t result;
__ASM volatile ("strexh %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" ((uint32_t)value) );
return(result);
}
/**
\brief STR Exclusive (32 bit)
\details Executes a exclusive STR instruction for 32 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
\return 0 Function succeeded
\return 1 Function failed
*/
__STATIC_FORCEINLINE uint32_t __STREXW(uint32_t value, volatile uint32_t *addr)
{
uint32_t result;
__ASM volatile ("strex %0, %2, %1" : "=&r" (result), "=Q" (*addr) : "r" (value) );
return(result);
}
/**
\brief Remove the exclusive lock
\details Removes the exclusive lock which is created by LDREX.
*/
__STATIC_FORCEINLINE void __CLREX(void)
{
__ASM volatile ("clrex" ::: "memory");
}
#endif /* ((defined (__ARM_ARCH_7M__ ) && (__ARM_ARCH_7M__ == 1)) || \
(defined (__ARM_ARCH_7EM__ ) && (__ARM_ARCH_7EM__ == 1)) || \
(defined (__ARM_ARCH_8M_MAIN__ ) && (__ARM_ARCH_8M_MAIN__ == 1)) || \
(defined (__ARM_ARCH_8M_BASE__ ) && (__ARM_ARCH_8M_BASE__ == 1)) ) */
#if ((defined (__ARM_ARCH_7M__ ) && (__ARM_ARCH_7M__ == 1)) || \
(defined (__ARM_ARCH_7EM__ ) && (__ARM_ARCH_7EM__ == 1)) || \
(defined (__ARM_ARCH_8M_MAIN__ ) && (__ARM_ARCH_8M_MAIN__ == 1)) )
/**
\brief Signed Saturate
\details Saturates a signed value.
\param [in] ARG1 Value to be saturated
\param [in] ARG2 Bit position to saturate to (1..32)
\return Saturated value
*/
#define __SSAT(ARG1, ARG2) \
__extension__ \
({ \
int32_t __RES, __ARG1 = (ARG1); \
__ASM volatile ("ssat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) : "cc" ); \
__RES; \
})
/**
\brief Unsigned Saturate
\details Saturates an unsigned value.
\param [in] ARG1 Value to be saturated
\param [in] ARG2 Bit position to saturate to (0..31)
\return Saturated value
*/
#define __USAT(ARG1, ARG2) \
__extension__ \
({ \
uint32_t __RES, __ARG1 = (ARG1); \
__ASM volatile ("usat %0, %1, %2" : "=r" (__RES) : "I" (ARG2), "r" (__ARG1) : "cc" ); \
__RES; \
})
/**
\brief Rotate Right with Extend (32 bit)
\details Moves each bit of a bitstring right by one bit.
The carry input is shifted in at the left end of the bitstring.
\param [in] value Value to rotate
\return Rotated value
*/
__STATIC_FORCEINLINE uint32_t __RRX(uint32_t value)
{
uint32_t result;
__ASM volatile ("rrx %0, %1" : __CMSIS_GCC_OUT_REG (result) : __CMSIS_GCC_USE_REG (value) );
return(result);
}
/**
\brief LDRT Unprivileged (8 bit)
\details Executes a Unprivileged LDRT instruction for 8 bit value.
\param [in] ptr Pointer to data
\return value of type uint8_t at (*ptr)
*/
__STATIC_FORCEINLINE uint8_t __LDRBT(volatile uint8_t *ptr)
{
uint32_t result;
#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
__ASM volatile ("ldrbt %0, %1" : "=r" (result) : "Q" (*ptr) );
#else
/* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
accepted by assembler. So has to use following less efficient pattern.
*/
__ASM volatile ("ldrbt %0, [%1]" : "=r" (result) : "r" (ptr) : "memory" );
#endif
return ((uint8_t) result); /* Add explicit type cast here */
}
/**
\brief LDRT Unprivileged (16 bit)
\details Executes a Unprivileged LDRT instruction for 16 bit values.
\param [in] ptr Pointer to data
\return value of type uint16_t at (*ptr)
*/
__STATIC_FORCEINLINE uint16_t __LDRHT(volatile uint16_t *ptr)
{
uint32_t result;
#if (__GNUC__ > 4) || (__GNUC__ == 4 && __GNUC_MINOR__ >= 8)
__ASM volatile ("ldrht %0, %1" : "=r" (result) : "Q" (*ptr) );
#else
/* Prior to GCC 4.8, "Q" will be expanded to [rx, #0] which is not
accepted by assembler. So has to use following less efficient pattern.
*/
__ASM volatile ("ldrht %0, [%1]" : "=r" (result) : "r" (ptr) : "memory" );
#endif
return ((uint16_t) result); /* Add explicit type cast here */
}
/**
\brief LDRT Unprivileged (32 bit)
\details Executes a Unprivileged LDRT instruction for 32 bit values.
\param [in] ptr Pointer to data
\return value of type uint32_t at (*ptr)
*/
__STATIC_FORCEINLINE uint32_t __LDRT(volatile uint32_t *ptr)
{
uint32_t result;
__ASM volatile ("ldrt %0, %1" : "=r" (result) : "Q" (*ptr) );
return(result);
}
/**
\brief STRT Unprivileged (8 bit)
\details Executes a Unprivileged STRT instruction for 8 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
*/
__STATIC_FORCEINLINE void __STRBT(uint8_t value, volatile uint8_t *ptr)
{
__ASM volatile ("strbt %1, %0" : "=Q" (*ptr) : "r" ((uint32_t)value) );
}
/**
\brief STRT Unprivileged (16 bit)
\details Executes a Unprivileged STRT instruction for 16 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
*/
__STATIC_FORCEINLINE void __STRHT(uint16_t value, volatile uint16_t *ptr)
{
__ASM volatile ("strht %1, %0" : "=Q" (*ptr) : "r" ((uint32_t)value) );
}
/**
\brief STRT Unprivileged (32 bit)
\details Executes a Unprivileged STRT instruction for 32 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
*/
__STATIC_FORCEINLINE void __STRT(uint32_t value, volatile uint32_t *ptr)
{
__ASM volatile ("strt %1, %0" : "=Q" (*ptr) : "r" (value) );
}
#else /* ((defined (__ARM_ARCH_7M__ ) && (__ARM_ARCH_7M__ == 1)) || \
(defined (__ARM_ARCH_7EM__ ) && (__ARM_ARCH_7EM__ == 1)) || \
(defined (__ARM_ARCH_8M_MAIN__ ) && (__ARM_ARCH_8M_MAIN__ == 1)) ) */
/**
\brief Signed Saturate
\details Saturates a signed value.
\param [in] value Value to be saturated
\param [in] sat Bit position to saturate to (1..32)
\return Saturated value
*/
__STATIC_FORCEINLINE int32_t __SSAT(int32_t val, uint32_t sat)
{
if ((sat >= 1U) && (sat <= 32U))
{
const int32_t max = (int32_t)((1U << (sat - 1U)) - 1U);
const int32_t min = -1 - max ;
if (val > max)
{
return max;
}
else if (val < min)
{
return min;
}
}
return val;
}
/**
\brief Unsigned Saturate
\details Saturates an unsigned value.
\param [in] value Value to be saturated
\param [in] sat Bit position to saturate to (0..31)
\return Saturated value
*/
__STATIC_FORCEINLINE uint32_t __USAT(int32_t val, uint32_t sat)
{
if (sat <= 31U)
{
const uint32_t max = ((1U << sat) - 1U);
if (val > (int32_t)max)
{
return max;
}
else if (val < 0)
{
return 0U;
}
}
return (uint32_t)val;
}
#endif /* ((defined (__ARM_ARCH_7M__ ) && (__ARM_ARCH_7M__ == 1)) || \
(defined (__ARM_ARCH_7EM__ ) && (__ARM_ARCH_7EM__ == 1)) || \
(defined (__ARM_ARCH_8M_MAIN__ ) && (__ARM_ARCH_8M_MAIN__ == 1)) ) */
#if ((defined (__ARM_ARCH_8M_MAIN__ ) && (__ARM_ARCH_8M_MAIN__ == 1)) || \
(defined (__ARM_ARCH_8M_BASE__ ) && (__ARM_ARCH_8M_BASE__ == 1)) )
/**
\brief Load-Acquire (8 bit)
\details Executes a LDAB instruction for 8 bit value.
\param [in] ptr Pointer to data
\return value of type uint8_t at (*ptr)
*/
__STATIC_FORCEINLINE uint8_t __LDAB(volatile uint8_t *ptr)
{
uint32_t result;
__ASM volatile ("ldab %0, %1" : "=r" (result) : "Q" (*ptr) : "memory" );
return ((uint8_t) result);
}
/**
\brief Load-Acquire (16 bit)
\details Executes a LDAH instruction for 16 bit values.
\param [in] ptr Pointer to data
\return value of type uint16_t at (*ptr)
*/
__STATIC_FORCEINLINE uint16_t __LDAH(volatile uint16_t *ptr)
{
uint32_t result;
__ASM volatile ("ldah %0, %1" : "=r" (result) : "Q" (*ptr) : "memory" );
return ((uint16_t) result);
}
/**
\brief Load-Acquire (32 bit)
\details Executes a LDA instruction for 32 bit values.
\param [in] ptr Pointer to data
\return value of type uint32_t at (*ptr)
*/
__STATIC_FORCEINLINE uint32_t __LDA(volatile uint32_t *ptr)
{
uint32_t result;
__ASM volatile ("lda %0, %1" : "=r" (result) : "Q" (*ptr) : "memory" );
return(result);
}
/**
\brief Store-Release (8 bit)
\details Executes a STLB instruction for 8 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
*/
__STATIC_FORCEINLINE void __STLB(uint8_t value, volatile uint8_t *ptr)
{
__ASM volatile ("stlb %1, %0" : "=Q" (*ptr) : "r" ((uint32_t)value) : "memory" );
}
/**
\brief Store-Release (16 bit)
\details Executes a STLH instruction for 16 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
*/
__STATIC_FORCEINLINE void __STLH(uint16_t value, volatile uint16_t *ptr)
{
__ASM volatile ("stlh %1, %0" : "=Q" (*ptr) : "r" ((uint32_t)value) : "memory" );
}
/**
\brief Store-Release (32 bit)
\details Executes a STL instruction for 32 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
*/
__STATIC_FORCEINLINE void __STL(uint32_t value, volatile uint32_t *ptr)
{
__ASM volatile ("stl %1, %0" : "=Q" (*ptr) : "r" ((uint32_t)value) : "memory" );
}
/**
\brief Load-Acquire Exclusive (8 bit)
\details Executes a LDAB exclusive instruction for 8 bit value.
\param [in] ptr Pointer to data
\return value of type uint8_t at (*ptr)
*/
__STATIC_FORCEINLINE uint8_t __LDAEXB(volatile uint8_t *ptr)
{
uint32_t result;
__ASM volatile ("ldaexb %0, %1" : "=r" (result) : "Q" (*ptr) : "memory" );
return ((uint8_t) result);
}
/**
\brief Load-Acquire Exclusive (16 bit)
\details Executes a LDAH exclusive instruction for 16 bit values.
\param [in] ptr Pointer to data
\return value of type uint16_t at (*ptr)
*/
__STATIC_FORCEINLINE uint16_t __LDAEXH(volatile uint16_t *ptr)
{
uint32_t result;
__ASM volatile ("ldaexh %0, %1" : "=r" (result) : "Q" (*ptr) : "memory" );
return ((uint16_t) result);
}
/**
\brief Load-Acquire Exclusive (32 bit)
\details Executes a LDA exclusive instruction for 32 bit values.
\param [in] ptr Pointer to data
\return value of type uint32_t at (*ptr)
*/
__STATIC_FORCEINLINE uint32_t __LDAEX(volatile uint32_t *ptr)
{
uint32_t result;
__ASM volatile ("ldaex %0, %1" : "=r" (result) : "Q" (*ptr) : "memory" );
return(result);
}
/**
\brief Store-Release Exclusive (8 bit)
\details Executes a STLB exclusive instruction for 8 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
\return 0 Function succeeded
\return 1 Function failed
*/
__STATIC_FORCEINLINE uint32_t __STLEXB(uint8_t value, volatile uint8_t *ptr)
{
uint32_t result;
__ASM volatile ("stlexb %0, %2, %1" : "=&r" (result), "=Q" (*ptr) : "r" ((uint32_t)value) : "memory" );
return(result);
}
/**
\brief Store-Release Exclusive (16 bit)
\details Executes a STLH exclusive instruction for 16 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
\return 0 Function succeeded
\return 1 Function failed
*/
__STATIC_FORCEINLINE uint32_t __STLEXH(uint16_t value, volatile uint16_t *ptr)
{
uint32_t result;
__ASM volatile ("stlexh %0, %2, %1" : "=&r" (result), "=Q" (*ptr) : "r" ((uint32_t)value) : "memory" );
return(result);
}
/**
\brief Store-Release Exclusive (32 bit)
\details Executes a STL exclusive instruction for 32 bit values.
\param [in] value Value to store
\param [in] ptr Pointer to location
\return 0 Function succeeded
\return 1 Function failed
*/
__STATIC_FORCEINLINE uint32_t __STLEX(uint32_t value, volatile uint32_t *ptr)
{
uint32_t result;
__ASM volatile ("stlex %0, %2, %1" : "=&r" (result), "=Q" (*ptr) : "r" ((uint32_t)value) : "memory" );
return(result);
}
#endif /* ((defined (__ARM_ARCH_8M_MAIN__ ) && (__ARM_ARCH_8M_MAIN__ == 1)) || \
(defined (__ARM_ARCH_8M_BASE__ ) && (__ARM_ARCH_8M_BASE__ == 1)) ) */
/*@}*/ /* end of group CMSIS_Core_InstructionInterface */
/* ########################### Core Function Access ########################### */
/** \ingroup CMSIS_Core_FunctionInterface
\defgroup CMSIS_Core_RegAccFunctions CMSIS Core Register Access Functions
@{
*/
/**
\brief Enable IRQ Interrupts
\details Enables IRQ interrupts by clearing special-purpose register PRIMASK.
Can only be executed in Privileged modes.
*/
__STATIC_FORCEINLINE void __enable_irq(void)
{
__ASM volatile ("cpsie i" : : : "memory");
}
/**
\brief Disable IRQ Interrupts
\details Disables IRQ interrupts by setting special-purpose register PRIMASK.
Can only be executed in Privileged modes.
*/
__STATIC_FORCEINLINE void __disable_irq(void)
{
__ASM volatile ("cpsid i" : : : "memory");
}
/**
\brief Get Control Register
\details Returns the content of the Control Register.
\return Control Register value
*/
__STATIC_FORCEINLINE uint32_t __get_CONTROL(void)
{
uint32_t result;
__ASM volatile ("MRS %0, control" : "=r" (result) );
return(result);
}
#if (defined (__ARM_FEATURE_CMSE ) && (__ARM_FEATURE_CMSE == 3))
/**
\brief Get Control Register (non-secure)
\details Returns the content of the non-secure Control Register when in secure mode.
\return non-secure Control Register value
*/
__STATIC_FORCEINLINE uint32_t __TZ_get_CONTROL_NS(void)
{
uint32_t result;
__ASM volatile ("MRS %0, control_ns" : "=r" (result) );
return(result);
}
#endif