Compiler abstraction layer and code utilities

Compiler abstraction layer and code utilities for AT91SAM.

This module provides various abstraction layers and utilities to make code compatible between different compilers.

Modules
	Preprocessor - Macro Repeat
	Preprocessor - Stringize
	Preprocessor - Token Paste

Data Structures
struct	StructCPtr
	Structure of pointers to constant 64-, 32-, 16- and 8-bit unsigned integers. More...
struct	StructCVPtr
	Structure of pointers to constant volatile 64-, 32-, 16- and 8-bit unsigned integers. More...
struct	StructPtr
	Structure of pointers to 64-, 32-, 16- and 8-bit unsigned integers. More...
struct	StructVPtr
	Structure of pointers to volatile 64-, 32-, 16- and 8-bit unsigned integers. More...
union	Union16
	16-bit union. More...
union	Union32
	32-bit union. More...
union	Union64
	64-bit union. More...
union	UnionCPtr
	Union of pointers to constant 64-, 32-, 16- and 8-bit unsigned integers. More...
union	UnionCVPtr
	Union of pointers to constant volatile 64-, 32-, 16- and 8-bit unsigned integers. More...
union	UnionPtr
	Union of pointers to 64-, 32-, 16- and 8-bit unsigned integers. More...
union	UnionVPtr
	Union of pointers to volatile 64-, 32-, 16- and 8-bit unsigned integers. More...

Macros
#define	__always_inline   inline __attribute__((__always_inline__))
	The function should always be inlined. More...
#define	__no_inline   __attribute__((__noinline__))
	The function should not be inlined. More...
#define	ADDR_COPY_DST_SRC_16(dst, src)   ((dst) = (src))
#define	ADDR_COPY_DST_SRC_64(dst, src)   ((dst) = (src))
#define	Assert(expr)   ((void) 0)
	This macro is used to test fatal errors. More...
#define	barrier()   __DMB()
	Memory barrier. More...
#define	CCPU_ENDIAN_TO_LE16(x)   (x)
#define	CCPU_ENDIAN_TO_LE32(x)   (x)
#define	CCPU_ENDIAN_TO_LE64(x)   (x)
#define	CLE16_TO_CPU_ENDIAN(x)   (x)
#define	CLE32_TO_CPU_ENDIAN(x)   (x)
#define	CLE64_TO_CPU_ENDIAN(x)   (x)
#define	CMD_ID_OCTET   (0)
#define	COMPILER_ALIGNED(a)   __attribute__((__aligned__(a)))
	Set aligned boundary. More...
#define	COMPILER_PACK_RESET()   COMPILER_PRAGMA(pack())
	Set default alignment for subsequent struct and union definitions. More...
#define	COMPILER_PACK_SET(alignment)   COMPILER_PRAGMA(pack(alignment))
	Set maximum alignment for subsequent struct and union definitions to alignment. More...
#define	COMPILER_PRAGMA(arg)   _Pragma(#arg)
	Emit the compiler pragma arg. More...
#define	COMPILER_WORD_ALIGNED   __attribute__((__aligned__(4)))
	Set word-aligned boundary. More...
#define	CPU_ENDIAN_TO_LE16(x)   (x)
#define	CPU_ENDIAN_TO_LE32(x)   (x)
#define	CPU_ENDIAN_TO_LE64(x)   (x)
#define	div_ceil(a, b)   (((a) + (b) - 1) / (b))
	Calculate \( \left\lceil \frac{a}{b} \right\rceil \) using integer arithmetic. More...
#define	FLASH_DECLARE(x)   const x
#define	FLASH_EXTERN(x)   extern const x
#define	FUNC_PTR   void *
#define	LE16_TO_CPU_ENDIAN(x)   (x)
#define	LE32_TO_CPU_ENDIAN(x)   (x)
#define	LE64_TO_CPU_ENDIAN(x)   (x)
#define	Long_call(addr)   ((*(void (*)(void))(addr))())
	Calls the routine at address addr. More...
#define	MEMCPY_ENDIAN   memcpy
#define	NO_INIT   __attribute__((section(".no_init")))
#define	nop()   __NOP()
#define	OPTIMIZE_HIGH   __attribute__((optimize("s")))
#define	PGM_READ_BLOCK(dst, src, len)   memcpy((dst), (src), (len))
#define	PGM_READ_BYTE(x)   *(x)
#define	PGM_READ_DWORD(x)   *(x)
#define	PGM_READ_WORD(x)   *(x)
#define	RAMFUNC   __attribute__ ((section(".ramfunc")))
#define	SHORTENUM   __attribute__((packed))
#define	UNUSED(v)   (void)(v)
	Marking v as a unused parameter or value. More...
#define	unused(v)   do { (void)(v); } while(0)
	Marking v as a unused parameter or value. More...
#define	WEAK   __attribute__ ((weak))

Functions
static void	convert_16_bit_to_byte_address (uint16_t value, uint8_t *data)
static void	convert_16_bit_to_byte_array (uint16_t value, uint8_t *data)
	Converts a 16-Bit value into a 2 Byte array. More...
static void	convert_64_bit_to_byte_array (uint64_t value, uint8_t *data)
	Converts a 64-Bit value into a 8 Byte array. More...
static uint16_t	convert_byte_array_to_16_bit (uint8_t *data)
static uint32_t	convert_byte_array_to_32_bit (uint8_t *data)
static uint64_t	convert_byte_array_to_64_bit (uint8_t *data)
	Converts a 8 Byte array into a 64-Bit value. More...
static void	convert_spec_16_bit_to_byte_array (uint16_t value, uint8_t *data)

Usual Types
typedef unsigned char	Bool
	Boolean. More...
typedef unsigned char	bool
	Boolean. More...
typedef int8_t	S8
	8-bit signed integer. More...
typedef uint8_t	U8
	8-bit unsigned integer. More...
typedef int16_t	S16
	16-bit signed integer. More...
typedef uint16_t	U16
	16-bit unsigned integer. More...
typedef uint16_t	le16_t
typedef uint16_t	be16_t
typedef int32_t	S32
	32-bit signed integer. More...
typedef uint32_t	U32
	32-bit unsigned integer. More...
typedef uint32_t	le32_t
typedef uint32_t	be32_t
typedef int64_t	S64
	64-bit signed integer. More...
typedef uint64_t	U64
	64-bit unsigned integer. More...
typedef float	F32
	32-bit floating-point number. More...
typedef double	F64
	64-bit floating-point number. More...
typedef uint32_t	iram_size_t

Status Types
typedef bool	Status_bool_t
	Boolean status. More...
typedef U8	Status_t
	8-bit-coded status. More...

Usual Constants
#define	DISABLE   0
#define	ENABLE   1
#define	false   0
#define	true   1
#define	PASS   0
#define	FAIL   1
#define	LOW   0
#define	HIGH   1

Optimization Control
#define	is_constant(exp)   __builtin_constant_p(exp)
	Determine if an expression evaluates to a constant value. More...

Bit-Field Handling
#define	Rd_bits(value, mask)   ((value) & (mask))
	Reads the bits of a value specified by a given bit-mask. More...
#define	Wr_bits(lvalue, mask, bits)
	Writes the bits of a C lvalue specified by a given bit-mask. More...
#define	Tst_bits(value, mask)   (Rd_bits(value, mask) != 0)
	Tests the bits of a value specified by a given bit-mask. More...
#define	Clr_bits(lvalue, mask)   ((lvalue) &= ~(mask))
	Clears the bits of a C lvalue specified by a given bit-mask. More...
#define	Set_bits(lvalue, mask)   ((lvalue) |= (mask))
	Sets the bits of a C lvalue specified by a given bit-mask. More...
#define	Tgl_bits(lvalue, mask)   ((lvalue) ^= (mask))
	Toggles the bits of a C lvalue specified by a given bit-mask. More...
#define	Rd_bitfield(value, mask)   (Rd_bits( value, mask) >> ctz(mask))
	Reads the bit-field of a value specified by a given bit-mask. More...
#define	Wr_bitfield(lvalue, mask, bitfield)   (Wr_bits(lvalue, mask, (U32)(bitfield) << ctz(mask)))
	Writes the bit-field of a C lvalue specified by a given bit-mask. More...

Zero-Bit Counting
Under GCC, __builtin_clz and __builtin_ctz behave like macros when applied to constant expressions (values known at compile time), so they are more optimized than the use of the corresponding assembly instructions and they can be used as constant expressions e.g. to initialize objects having static storage duration, and like the corresponding assembly instructions when applied to non-constant expressions (values unknown at compile time), so they are more optimized than an assembly periphrasis. Hence, clz and ctz ensure a possible and optimized behavior for both constant and non-constant expressions.
#define	clz(u)   ((u) ? __builtin_clz(u) : 32)
	Counts the leading zero bits of the given value considered as a 32-bit integer. More...
#define	ctz(u)   ((u) ? __builtin_ctz(u) : 32)
	Counts the trailing zero bits of the given value considered as a 32-bit integer. More...

Bit Reversing
#define	bit_reverse8(u8)   ((U8)(bit_reverse32((U8)(u8)) >> 24))
	Reverses the bits of u8. More...
#define	bit_reverse16(u16)   ((U16)(bit_reverse32((U16)(u16)) >> 16))
	Reverses the bits of u16. More...
#define	bit_reverse32(u32)   __RBIT(u32)
	Reverses the bits of u32. More...
#define	bit_reverse64(u64)
	Reverses the bits of u64. More...

Alignment
#define	Test_align(val, n)   (!Tst_bits( val, (n) - 1 ) )
	Tests alignment of the number val with the n boundary. More...
#define	Get_align(val, n)   ( Rd_bits( val, (n) - 1 ) )
	Gets alignment of the number val with respect to the n boundary. More...
#define	Set_align(lval, n, alg)   ( Wr_bits(lval, (n) - 1, alg) )
	Sets alignment of the lvalue number lval to alg with respect to the n boundary. More...
#define	Align_up(val, n)   (((val) + ((n) - 1)) & ~((n) - 1))
	Aligns the number val with the upper n boundary. More...
#define	Align_down(val, n)   ( (val) & ~((n) - 1))
	Aligns the number val with the lower n boundary. More...

Mathematics
The same considerations as for clz and ctz apply here but GCC does not provide built-in functions to access the assembly instructions abs, min and max and it does not produce them by itself in most cases, so two sets of macros are defined here: Abs, Min and Max to apply to constant expressions (values known at compile time); abs, min and max to apply to non-constant expressions (values unknown at compile time), abs is found in stdlib.h.
#define	Abs(a)   (((a) < 0 ) ? -(a) : (a))
	Takes the absolute value of a. More...
#define	Min(a, b)   (((a) < (b)) ? (a) : (b))
	Takes the minimal value of a and b. More...
#define	Max(a, b)   (((a) > (b)) ? (a) : (b))
	Takes the maximal value of a and b. More...
#define	min(a, b)   Min(a, b)
	Takes the minimal value of a and b. More...
#define	max(a, b)   Max(a, b)
	Takes the maximal value of a and b. More...

MCU Endianism Handling
ARM is MCU little endianism.
#define	MSB(u16)   (((U8 *)&(u16))[1])
	Most significant byte of u16. More...
#define	LSB(u16)   (((U8 *)&(u16))[0])
	Least significant byte of u16. More...
#define	MSH(u32)   (((U16 *)&(u32))[1])
	Most significant half-word of u32. More...
#define	LSH(u32)   (((U16 *)&(u32))[0])
	Least significant half-word of u32. More...
#define	MSB0W(u32)   (((U8 *)&(u32))[3])
	Most significant byte of 1st rank of u32. More...
#define	MSB1W(u32)   (((U8 *)&(u32))[2])
	Most significant byte of 2nd rank of u32. More...
#define	MSB2W(u32)   (((U8 *)&(u32))[1])
	Most significant byte of 3rd rank of u32. More...
#define	MSB3W(u32)   (((U8 *)&(u32))[0])
	Most significant byte of 4th rank of u32. More...
#define	LSB3W(u32)   MSB0W(u32)
	Least significant byte of 4th rank of u32. More...
#define	LSB2W(u32)   MSB1W(u32)
	Least significant byte of 3rd rank of u32. More...
#define	LSB1W(u32)   MSB2W(u32)
	Least significant byte of 2nd rank of u32. More...
#define	LSB0W(u32)   MSB3W(u32)
	Least significant byte of 1st rank of u32. More...
#define	MSW(u64)   (((U32 *)&(u64))[1])
	Most significant word of u64. More...
#define	LSW(u64)   (((U32 *)&(u64))[0])
	Least significant word of u64. More...
#define	MSH0(u64)   (((U16 *)&(u64))[3])
	Most significant half-word of 1st rank of u64. More...
#define	MSH1(u64)   (((U16 *)&(u64))[2])
	Most significant half-word of 2nd rank of u64. More...
#define	MSH2(u64)   (((U16 *)&(u64))[1])
	Most significant half-word of 3rd rank of u64. More...
#define	MSH3(u64)   (((U16 *)&(u64))[0])
	Most significant half-word of 4th rank of u64. More...
#define	LSH3(u64)   MSH0(u64)
	Least significant half-word of 4th rank of u64. More...
#define	LSH2(u64)   MSH1(u64)
	Least significant half-word of 3rd rank of u64. More...
#define	LSH1(u64)   MSH2(u64)
	Least significant half-word of 2nd rank of u64. More...
#define	LSH0(u64)   MSH3(u64)
	Least significant half-word of 1st rank of u64. More...
#define	MSB0D(u64)   (((U8 *)&(u64))[7])
	Most significant byte of 1st rank of u64. More...
#define	MSB1D(u64)   (((U8 *)&(u64))[6])
	Most significant byte of 2nd rank of u64. More...
#define	MSB2D(u64)   (((U8 *)&(u64))[5])
	Most significant byte of 3rd rank of u64. More...
#define	MSB3D(u64)   (((U8 *)&(u64))[4])
	Most significant byte of 4th rank of u64. More...
#define	MSB4D(u64)   (((U8 *)&(u64))[3])
	Most significant byte of 5th rank of u64. More...
#define	MSB5D(u64)   (((U8 *)&(u64))[2])
	Most significant byte of 6th rank of u64. More...
#define	MSB6D(u64)   (((U8 *)&(u64))[1])
	Most significant byte of 7th rank of u64. More...
#define	MSB7D(u64)   (((U8 *)&(u64))[0])
	Most significant byte of 8th rank of u64. More...
#define	LSB7D(u64)   MSB0D(u64)
	Least significant byte of 8th rank of u64. More...
#define	LSB6D(u64)   MSB1D(u64)
	Least significant byte of 7th rank of u64. More...
#define	LSB5D(u64)   MSB2D(u64)
	Least significant byte of 6th rank of u64. More...
#define	LSB4D(u64)   MSB3D(u64)
	Least significant byte of 5th rank of u64. More...
#define	LSB3D(u64)   MSB4D(u64)
	Least significant byte of 4th rank of u64. More...
#define	LSB2D(u64)   MSB5D(u64)
	Least significant byte of 3rd rank of u64. More...
#define	LSB1D(u64)   MSB6D(u64)
	Least significant byte of 2nd rank of u64. More...
#define	LSB0D(u64)   MSB7D(u64)
	Least significant byte of 1st rank of u64. More...
#define	BE16(x)   swap16(x)
#define	LE16(x)   (x)
#define	le16_to_cpu(x)   (x)
#define	cpu_to_le16(x)   (x)
#define	LE16_TO_CPU(x)   (x)
#define	CPU_TO_LE16(x)   (x)
#define	be16_to_cpu(x)   swap16(x)
#define	cpu_to_be16(x)   swap16(x)
#define	BE16_TO_CPU(x)   swap16(x)
#define	CPU_TO_BE16(x)   swap16(x)
#define	le32_to_cpu(x)   (x)
#define	cpu_to_le32(x)   (x)
#define	LE32_TO_CPU(x)   (x)
#define	CPU_TO_LE32(x)   (x)
#define	be32_to_cpu(x)   swap32(x)
#define	cpu_to_be32(x)   swap32(x)
#define	BE32_TO_CPU(x)   swap32(x)
#define	CPU_TO_BE32(x)   swap32(x)

Endianism Conversion
The same considerations as for clz and ctz apply here but GCC's __builtin_bswap_32 and __builtin_bswap_64 do not behave like macros when applied to constant expressions, so two sets of macros are defined here: Swap16, Swap32 and Swap64 to apply to constant expressions (values known at compile time); swap16, swap32 and swap64 to apply to non-constant expressions (values unknown at compile time).
#define	Swap16(u16)
	Toggles the endianism of u16 (by swapping its bytes). More...
#define	Swap32(u32)
	Toggles the endianism of u32 (by swapping its bytes). More...
#define	Swap64(u64)
	Toggles the endianism of u64 (by swapping its bytes). More...
#define	swap16(u16)   Swap16(u16)
	Toggles the endianism of u16 (by swapping its bytes). More...
#define	swap32(u32)   ((U32)__builtin_bswap32((U32)(u32)))
	Toggles the endianism of u32 (by swapping its bytes). More...
#define	swap64(u64)   ((U64)__builtin_bswap64((U64)(u64)))
	Toggles the endianism of u64 (by swapping its bytes). More...

Target Abstraction
typedef U8	Byte
	8-bit unsigned integer. More...
#define	_GLOBEXT_   extern
	extern storage-class specifier. More...
#define	_CONST_TYPE_   const
	const type qualifier. More...
#define	_MEM_TYPE_SLOW_
	Slow memory type. More...
#define	_MEM_TYPE_MEDFAST_
	Fairly fast memory type. More...
#define	_MEM_TYPE_FAST_
	Fast memory type. More...
#define	memcmp_ram2ram   memcmp
	Target-specific memcmp of RAM to RAM. More...
#define	memcmp_code2ram   memcmp
	Target-specific memcmp of RAM to NVRAM. More...
#define	memcpy_ram2ram   memcpy
	Target-specific memcpy from RAM to RAM. More...
#define	memcpy_code2ram   memcpy
	Target-specific memcpy from NVRAM to RAM. More...
#define	LSB0(u32)   LSB0W(u32)
	Least significant byte of 1st rank of u32. More...
#define	LSB1(u32)   LSB1W(u32)
	Least significant byte of 2nd rank of u32. More...
#define	LSB2(u32)   LSB2W(u32)
	Least significant byte of 3rd rank of u32. More...
#define	LSB3(u32)   LSB3W(u32)
	Least significant byte of 4th rank of u32. More...
#define	MSB3(u32)   MSB3W(u32)
	Most significant byte of 4th rank of u32. More...
#define	MSB2(u32)   MSB2W(u32)
	Most significant byte of 3rd rank of u32. More...
#define	MSB1(u32)   MSB1W(u32)
	Most significant byte of 2nd rank of u32. More...
#define	MSB0(u32)   MSB0W(u32)
	Most significant byte of 1st rank of u32. More...

#define __always_inline   inline __attribute__((__always_inline__))

The function should always be inlined.

This annotation instructs the compiler to ignore its inlining heuristics and inline the function no matter how big it thinks it becomes.

#define __no_inline   __attribute__((__noinline__))

The function should not be inlined.

This annotation instructs the compiler to ignore its inlining heuristics and not inline the function.

#define _CONST_TYPE_   const

const type qualifier.

#define _GLOBEXT_   extern

extern storage-class specifier.

#define _MEM_TYPE_FAST_

Fast memory type.

#define _MEM_TYPE_MEDFAST_

Fairly fast memory type.

#define _MEM_TYPE_SLOW_

Slow memory type.

#define Abs

(

a

)

(((a) < 0 ) ? -(a) : (a))

Takes the absolute value of a.

Parameters

a	Input value.

Returns

Absolute value of a.

Note

More optimized if only used with values known at compile time.

#define ADDR_COPY_DST_SRC_16	(		dst,
			src
	)		((dst) = (src))

#define ADDR_COPY_DST_SRC_64	(		dst,
			src
	)		((dst) = (src))

#define Align_down	(		val,
			n
	)		( (val) & ~((n) - 1))

Aligns the number val with the lower n boundary.

Parameters

val	Input value.
n	Boundary.

Returns

Value resulting from the number val aligned with the lower n boundary.

#define Align_up	(		val,
			n
	)		(((val) + ((n) - 1)) & ~((n) - 1))

Aligns the number val with the upper n boundary.

Parameters

val	Input value.
n	Boundary.

Returns

Value resulting from the number val aligned with the upper n boundary.

#define Assert

(

expr

)

((void) 0)

This macro is used to test fatal errors.

The macro tests if the expression is false. If it is, a fatal error is detected and the application hangs up. If TEST_SUITE_DEFINE_ASSERT_MACRO is defined, a unit test version of the macro is used, to allow execution of further tests after a false expression.

Parameters

expr	Expression to evaluate and supposed to be nonzero.

Referenced by cpu_irq_leave_critical(), genclk_enable_source(), pdc_disable_transfer(), pdc_enable_transfer(), pdc_read_rx_counter(), pdc_read_rx_next_counter(), pdc_read_rx_next_ptr(), pdc_read_rx_ptr(), pdc_read_status(), pdc_read_tx_counter(), pdc_read_tx_next_counter(), pdc_read_tx_next_ptr(), pdc_read_tx_ptr(), pdc_rx_clear_cnt(), pdc_rx_init(), pdc_tx_init(), pll_config_init(), pll_config_read(), pll_config_write(), pll_disable(), pll_enable(), pll_enable_config_defaults(), pll_enable_source(), pll_is_locked(), pll_wait_for_lock(), sysclk_enable_usb(), uart_config_optical_interface(), uart_disable_optical_interface(), uart_enable_optical_interface(), and uart_set_sleepwalking().

#define barrier

(

)

__DMB()

Memory barrier.

#define BE16

(

x

)

swap16(x)

#define be16_to_cpu

(

x

)

swap16(x)

#define BE16_TO_CPU

(

x

)

swap16(x)

#define be32_to_cpu

(

x

)

swap32(x)

#define BE32_TO_CPU

(

x

)

swap32(x)

#define bit_reverse16

(

u16

)

((U16)(bit_reverse32((U16)(u16)) >> 16))

Reverses the bits of u16.

Parameters

u16	U16 of which to reverse the bits.

Returns

Value resulting from u16 with reversed bits.

#define bit_reverse32

(

u32

)

__RBIT(u32)

Reverses the bits of u32.

Parameters

u32	U32 of which to reverse the bits.

Returns

Value resulting from u32 with reversed bits.

#define bit_reverse64

(

u64

)

Value:

((U64)(((U64)bit_reverse32((U64)(u64) >> 32)) |\
                                   ((U64)bit_reverse32((U64)(u64)) << 32)))

Reverses the bits of u64.

Parameters

u64	U64 of which to reverse the bits.

Returns

Value resulting from u64 with reversed bits.

#define bit_reverse8

(

u8

)

((U8)(bit_reverse32((U8)(u8)) >> 24))

Reverses the bits of u8.

Parameters

u8	U8 of which to reverse the bits.

Returns

Value resulting from u8 with reversed bits.

#define CCPU_ENDIAN_TO_LE16

(

x

)

(x)

#define CCPU_ENDIAN_TO_LE32

(

x

)

(x)

#define CCPU_ENDIAN_TO_LE64

(

x

)

(x)

#define CLE16_TO_CPU_ENDIAN

(

x

)

(x)

#define CLE32_TO_CPU_ENDIAN

(

x

)

(x)

#define CLE64_TO_CPU_ENDIAN

(

x

)

(x)

#define Clr_bits	(		lvalue,
			mask
	)		((lvalue) &= ~(mask))

Clears the bits of a C lvalue specified by a given bit-mask.

Parameters

lvalue	C lvalue of which to clear bits.
mask	Bit-mask indicating bits to clear.

Returns

Resulting value with cleared bits.

#define clz

(

u

)

((u) ? __builtin_clz(u) : 32)

Counts the leading zero bits of the given value considered as a 32-bit integer.

Parameters

u	Value of which to count the leading zero bits.

Returns

The count of leading zero bits in u.

#define CMD_ID_OCTET   (0)

#define COMPILER_ALIGNED

(

a

)

__attribute__((__aligned__(a)))

Set aligned boundary.

#define COMPILER_PACK_RESET

(

)

COMPILER_PRAGMA(pack())

Set default alignment for subsequent struct and union definitions.

#define COMPILER_PACK_SET

(

alignment

)

COMPILER_PRAGMA(pack(alignment))

Set maximum alignment for subsequent struct and union definitions to alignment.

#define COMPILER_PRAGMA

(

arg

)

_Pragma(#arg)

Emit the compiler pragma arg.

Parameters

arg	The pragma directive as it would appear after #pragma (i.e. not stringified).

#define COMPILER_WORD_ALIGNED   __attribute__((__aligned__(4)))

Set word-aligned boundary.

#define CPU_ENDIAN_TO_LE16

(

x

)

(x)

#define CPU_ENDIAN_TO_LE32

(

x

)

(x)

#define CPU_ENDIAN_TO_LE64

(

x

)

(x)

#define cpu_to_be16

(

x

)

swap16(x)

#define CPU_TO_BE16

(

x

)

swap16(x)

#define cpu_to_be32

(

x

)

swap32(x)

#define CPU_TO_BE32

(

x

)

swap32(x)

#define cpu_to_le16

(

x

)

(x)

#define CPU_TO_LE16

(

x

)

(x)

#define cpu_to_le32

(

x

)

(x)

#define CPU_TO_LE32

(

x

)

(x)

#define ctz

(

u

)

((u) ? __builtin_ctz(u) : 32)

Counts the trailing zero bits of the given value considered as a 32-bit integer.

Parameters

u	Value of which to count the trailing zero bits.

Returns

The count of trailing zero bits in u.

#define DISABLE   0

#define div_ceil	(		a,
			b
	)		(((a) + (b) - 1) / (b))

Calculate \( \left\lceil \frac{a}{b} \right\rceil \) using integer arithmetic.

Parameters

a	An integer
b	Another integer

Returns

(a / b) rounded up to the nearest integer.

Referenced by spi_calc_baudrate_div().

#define ENABLE   1

#define FAIL   1

#define false   0

#define FLASH_DECLARE

(

x

)

const x

#define FLASH_EXTERN

(

x

)

extern const x

#define FUNC_PTR   void *

#define Get_align	(		val,
			n
	)		( Rd_bits( val, (n) - 1 ) )

Gets alignment of the number val with respect to the n boundary.

Parameters

val	Input value.
n	Boundary.

Returns

Alignment of the number val with respect to the n boundary.

#define HIGH   1

#define is_constant

(

exp

)

__builtin_constant_p(exp)

Determine if an expression evaluates to a constant value.

Parameters

exp	Any expression

Returns

true if exp is constant, false otherwise.

#define LE16

(

x

)

(x)

#define le16_to_cpu

(

x

)

(x)

#define LE16_TO_CPU

(

x

)

(x)

#define LE16_TO_CPU_ENDIAN

(

x

)

(x)

#define le32_to_cpu

(

x

)

(x)

#define LE32_TO_CPU

(

x

)

(x)

#define LE32_TO_CPU_ENDIAN

(

x

)

(x)

#define LE64_TO_CPU_ENDIAN

(

x

)

(x)

#define Long_call

(

addr

)

((*(void (*)(void))(addr))())

Calls the routine at address addr.

It generates a long call opcode.

For example, `Long_call(0x80000000)' generates a software reset on a UC3 if it is invoked from the CPU supervisor mode.

Parameters

addr	Address of the routine to call.

Note

It may be used as a long jump opcode in some special cases.

#define LOW   0

#define LSB

(

u16

)

(((U8 *)&(u16))[0])

Least significant byte of u16.

#define LSB0

(

u32

)

LSB0W(u32)

Least significant byte of 1st rank of u32.

#define LSB0D

(

u64

)

MSB7D(u64)

Least significant byte of 1st rank of u64.

#define LSB0W

(

u32

)

MSB3W(u32)

Least significant byte of 1st rank of u32.

#define LSB1

(

u32

)

LSB1W(u32)

Least significant byte of 2nd rank of u32.

#define LSB1D

(

u64

)

MSB6D(u64)

Least significant byte of 2nd rank of u64.

#define LSB1W

(

u32

)

MSB2W(u32)

Least significant byte of 2nd rank of u32.

#define LSB2

(

u32

)

LSB2W(u32)

Least significant byte of 3rd rank of u32.

#define LSB2D

(

u64

)

MSB5D(u64)

Least significant byte of 3rd rank of u64.

#define LSB2W

(

u32

)

MSB1W(u32)

Least significant byte of 3rd rank of u32.

#define LSB3

(

u32

)

LSB3W(u32)

Least significant byte of 4th rank of u32.

#define LSB3D

(

u64

)

MSB4D(u64)

Least significant byte of 4th rank of u64.

#define LSB3W

(

u32

)

MSB0W(u32)

Least significant byte of 4th rank of u32.

#define LSB4D

(

u64

)

MSB3D(u64)

Least significant byte of 5th rank of u64.

#define LSB5D

(

u64

)

MSB2D(u64)

Least significant byte of 6th rank of u64.

#define LSB6D

(

u64

)

MSB1D(u64)

Least significant byte of 7th rank of u64.

#define LSB7D

(

u64

)

MSB0D(u64)

Least significant byte of 8th rank of u64.

#define LSH

(

u32

)

(((U16 *)&(u32))[0])

Least significant half-word of u32.

#define LSH0

(

u64

)

MSH3(u64)

Least significant half-word of 1st rank of u64.

#define LSH1

(

u64

)

MSH2(u64)

Least significant half-word of 2nd rank of u64.

#define LSH2

(

u64

)

MSH1(u64)

Least significant half-word of 3rd rank of u64.

#define LSH3

(

u64

)

MSH0(u64)

Least significant half-word of 4th rank of u64.

#define LSW

(

u64

)

(((U32 *)&(u64))[0])

Least significant word of u64.

#define Max	(		a,
			b
	)		(((a) > (b)) ? (a) : (b))

Takes the maximal value of a and b.

Parameters

a	Input value.
b	Input value.

Returns

Maximal value of a and b.

Note

More optimized if only used with values known at compile time.

#define max	(		a,
			b
	)		Max(a, b)

Takes the maximal value of a and b.

Parameters

a	Input value.
b	Input value.

Returns

Maximal value of a and b.

Note

More optimized if only used with values unknown at compile time.

Referenced by wdt_get_timeout_value().

#define memcmp_code2ram   memcmp

Target-specific memcmp of RAM to NVRAM.

#define memcmp_ram2ram   memcmp

Target-specific memcmp of RAM to RAM.

#define memcpy_code2ram   memcpy

Target-specific memcpy from NVRAM to RAM.

#define MEMCPY_ENDIAN   memcpy

#define memcpy_ram2ram   memcpy

Target-specific memcpy from RAM to RAM.

#define Min	(		a,
			b
	)		(((a) < (b)) ? (a) : (b))

Takes the minimal value of a and b.

Parameters

a	Input value.
b	Input value.

Returns

Minimal value of a and b.

Note

More optimized if only used with values known at compile time.

#define min	(		a,
			b
	)		Min(a, b)

Takes the minimal value of a and b.

Parameters

a	Input value.
b	Input value.

Returns

Minimal value of a and b.

Note

More optimized if only used with values unknown at compile time.

Referenced by m2m_ssl_send_certs_to_winc(), and wdt_get_timeout_value().

#define MSB

(

u16

)

(((U8 *)&(u16))[1])

Most significant byte of u16.

#define MSB0

(

u32

)

MSB0W(u32)

Most significant byte of 1st rank of u32.

#define MSB0D

(

u64

)

(((U8 *)&(u64))[7])

Most significant byte of 1st rank of u64.

#define MSB0W

(

u32

)

(((U8 *)&(u32))[3])

Most significant byte of 1st rank of u32.

#define MSB1

(

u32

)

MSB1W(u32)

Most significant byte of 2nd rank of u32.

#define MSB1D

(

u64

)

(((U8 *)&(u64))[6])

Most significant byte of 2nd rank of u64.

#define MSB1W

(

u32

)

(((U8 *)&(u32))[2])

Most significant byte of 2nd rank of u32.

#define MSB2

(

u32

)

MSB2W(u32)

Most significant byte of 3rd rank of u32.

#define MSB2D

(

u64

)

(((U8 *)&(u64))[5])

Most significant byte of 3rd rank of u64.

#define MSB2W

(

u32

)

(((U8 *)&(u32))[1])

Most significant byte of 3rd rank of u32.

#define MSB3

(

u32

)

MSB3W(u32)

Most significant byte of 4th rank of u32.

#define MSB3D

(

u64

)

(((U8 *)&(u64))[4])

Most significant byte of 4th rank of u64.

#define MSB3W

(

u32

)

(((U8 *)&(u32))[0])

Most significant byte of 4th rank of u32.

#define MSB4D

(

u64

)

(((U8 *)&(u64))[3])

Most significant byte of 5th rank of u64.

#define MSB5D

(

u64

)

(((U8 *)&(u64))[2])

Most significant byte of 6th rank of u64.

#define MSB6D

(

u64

)

(((U8 *)&(u64))[1])

Most significant byte of 7th rank of u64.

#define MSB7D

(

u64

)

(((U8 *)&(u64))[0])

Most significant byte of 8th rank of u64.

#define MSH

(

u32

)

(((U16 *)&(u32))[1])

Most significant half-word of u32.

#define MSH0

(

u64

)

(((U16 *)&(u64))[3])

Most significant half-word of 1st rank of u64.

#define MSH1

(

u64

)

(((U16 *)&(u64))[2])

Most significant half-word of 2nd rank of u64.

#define MSH2

(

u64

)

(((U16 *)&(u64))[1])

Most significant half-word of 3rd rank of u64.

#define MSH3

(

u64

)

(((U16 *)&(u64))[0])

Most significant half-word of 4th rank of u64.

#define MSW

(

u64

)

(((U32 *)&(u64))[1])

Most significant word of u64.

#define NO_INIT   __attribute__((section(".no_init")))

#define nop

(

)

__NOP()

#define OPTIMIZE_HIGH   __attribute__((optimize("s")))

#define PASS   0

#define PGM_READ_BLOCK	(		dst,
			src,
			len
	)		memcpy((dst), (src), (len))

#define PGM_READ_BYTE

(

x

)

*(x)

#define PGM_READ_DWORD

(

x

)

*(x)

#define PGM_READ_WORD

(

x

)

*(x)

#define RAMFUNC   __attribute__ ((section(".ramfunc")))

#define Rd_bitfield	(		value,
			mask
	)		(Rd_bits( value, mask) >> ctz(mask))

Reads the bit-field of a value specified by a given bit-mask.

Parameters

value	Value to read a bit-field from.
mask	Bit-mask indicating the bit-field to read.

Returns

Read bit-field.

#define Rd_bits	(		value,
			mask
	)		((value) & (mask))

Reads the bits of a value specified by a given bit-mask.

Parameters

value	Value to read bits from.
mask	Bit-mask indicating bits to read.

Returns

Read bits.

#define Set_align	(		lval,
			n,
			alg
	)		( Wr_bits(lval, (n) - 1, alg) )

Sets alignment of the lvalue number lval to alg with respect to the n boundary.

Parameters

lval	Input/output lvalue.
n	Boundary.
alg	Alignment.

Returns

New value of lval resulting from its alignment set to alg with respect to the n boundary.

#define Set_bits	(		lvalue,
			mask
	)		((lvalue) |= (mask))

Sets the bits of a C lvalue specified by a given bit-mask.

Parameters

lvalue	C lvalue of which to set bits.
mask	Bit-mask indicating bits to set.

Returns

Resulting value with set bits.

#define SHORTENUM   __attribute__((packed))

#define Swap16

(

u16

)

Value:

((U16)(((U16)(u16) >> 8) |\
                           ((U16)(u16) << 8)))

Toggles the endianism of u16 (by swapping its bytes).

Parameters

u16	U16 of which to toggle the endianism.

Returns

Value resulting from u16 with toggled endianism.

Note

More optimized if only used with values known at compile time.

#define swap16

(

u16

)

Swap16(u16)

Toggles the endianism of u16 (by swapping its bytes).

Parameters

u16	U16 of which to toggle the endianism.

Returns

Value resulting from u16 with toggled endianism.

Note

More optimized if only used with values unknown at compile time.

#define Swap32

(

u32

)

Value:

((U32)(((U32)Swap16((U32)(u32) >> 16)) |\
                           ((U32)Swap16((U32)(u32)) << 16)))

Toggles the endianism of u32 (by swapping its bytes).

Parameters

u32	U32 of which to toggle the endianism.

Returns

Value resulting from u32 with toggled endianism.

Note

More optimized if only used with values known at compile time.

#define swap32

(

u32

)

((U32)__builtin_bswap32((U32)(u32)))

Toggles the endianism of u32 (by swapping its bytes).

Parameters

u32	U32 of which to toggle the endianism.

Returns

Value resulting from u32 with toggled endianism.

Note

More optimized if only used with values unknown at compile time.

#define Swap64

(

u64

)

Value:

((U64)(((U64)Swap32((U64)(u64) >> 32)) |\
                           ((U64)Swap32((U64)(u64)) << 32)))

Toggles the endianism of u64 (by swapping its bytes).

Parameters

u64	U64 of which to toggle the endianism.

Returns

Value resulting from u64 with toggled endianism.

Note

More optimized if only used with values known at compile time.

#define swap64

(

u64

)

((U64)__builtin_bswap64((U64)(u64)))

Toggles the endianism of u64 (by swapping its bytes).

Parameters

u64	U64 of which to toggle the endianism.

Returns

Value resulting from u64 with toggled endianism.

Note

More optimized if only used with values unknown at compile time.

#define Test_align	(		val,
			n
	)		(!Tst_bits( val, (n) - 1 ) )

Tests alignment of the number val with the n boundary.

Parameters

val	Input value.
n	Boundary.

Returns

1 if the number val is aligned with the n boundary, else 0.

#define Tgl_bits	(		lvalue,
			mask
	)		((lvalue) ^= (mask))

Toggles the bits of a C lvalue specified by a given bit-mask.

Parameters

lvalue	C lvalue of which to toggle bits.
mask	Bit-mask indicating bits to toggle.

Returns

Resulting value with toggled bits.

#define true   1

#define Tst_bits	(		value,
			mask
	)		(Rd_bits(value, mask) != 0)

Tests the bits of a value specified by a given bit-mask.

Parameters

value	Value of which to test bits.
mask	Bit-mask indicating bits to test.

Returns

1 if at least one of the tested bits is set, else 0.

#define UNUSED

(

v

)

(void)(v)

Marking v as a unused parameter or value.

Referenced by pmc_enable_backupmode(), pmc_enable_sleepmode(), portable_delay_cycles(), spi_disable_clock(), spi_enable_clock(), sysclk_get_peripheral_bus_hz(), and usart_serial_getchar().

#define unused

(

v

)

do { (void)(v); } while(0)

Marking v as a unused parameter or value.

#define WEAK   __attribute__ ((weak))

#define Wr_bitfield	(		lvalue,
			mask,
			bitfield
	)		(Wr_bits(lvalue, mask, (U32)(bitfield) << ctz(mask)))

Writes the bit-field of a C lvalue specified by a given bit-mask.

Parameters

lvalue	C lvalue to write a bit-field to.
mask	Bit-mask indicating the bit-field to write.
bitfield	Bit-field to write.

Returns

Resulting value with written bit-field.

#define Wr_bits	(		lvalue,
			mask,
			bits
	)

Value:

((lvalue) = ((lvalue) & ~(mask)) |\
                                                 ((bits  ) &  (mask)))

Writes the bits of a C lvalue specified by a given bit-mask.

Parameters

lvalue	C lvalue to write bits to.
mask	Bit-mask indicating bits to write.
bits	Bits to write.

Returns

Resulting value with written bits.

typedef uint16_t be16_t

typedef uint32_t be32_t

typedef unsigned char Bool

Boolean.

typedef unsigned char bool

Boolean.

typedef U8 Byte

8-bit unsigned integer.

typedef float F32

32-bit floating-point number.

typedef double F64

64-bit floating-point number.

typedef uint32_t iram_size_t

typedef uint16_t le16_t

typedef uint32_t le32_t

typedef int16_t S16

16-bit signed integer.

typedef int32_t S32

32-bit signed integer.

typedef int64_t S64

64-bit signed integer.

typedef int8_t S8

8-bit signed integer.

typedef bool Status_bool_t

Boolean status.

typedef U8 Status_t

8-bit-coded status.

typedef uint16_t U16

16-bit unsigned integer.

typedef uint32_t U32

32-bit unsigned integer.

typedef uint64_t U64

64-bit unsigned integer.

typedef uint8_t U8

8-bit unsigned integer.

static void convert_16_bit_to_byte_address ( uint16_t  value, uint8_t *  data  )

inlinestatic

static void convert_16_bit_to_byte_array ( uint16_t  value, uint8_t *  data  )

inlinestatic

Converts a 16-Bit value into a 2 Byte array.

Parameters

[in]	value	16-Bit value
[out]	data	Pointer to the 2 Byte array to be updated with 16-Bit value

static void convert_64_bit_to_byte_array ( uint64_t  value, uint8_t *  data  )

inlinestatic

Converts a 64-Bit value into a 8 Byte array.

Parameters

[in]	value	64-Bit value
[out]	data	Pointer to the 8 Byte array to be updated with 64-Bit value

static uint16_t convert_byte_array_to_16_bit ( uint8_t *  data )

inlinestatic

static uint32_t convert_byte_array_to_32_bit ( uint8_t *  data )

inlinestatic

static uint64_t convert_byte_array_to_64_bit ( uint8_t *  data )

inlinestatic

Converts a 8 Byte array into a 64-Bit value.

Parameters

data	Specifies the pointer to the 8 Byte array

Returns

64-Bit value

static void convert_spec_16_bit_to_byte_array ( uint16_t  value, uint8_t *  data  )

inlinestatic