arm_attributes.h File Reference

ARM common compilers attributes. More...

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Macros
#define	__WEAK   __attribute__((weak))
	Weak attribute.
#define	__IRQ   __attribute__((interrupt_handler))
	Interrupt attribute.
#define	ATTR__(...)
	Macro to define one or multiple attribute(s) ... for a declaration.
#define	ALIGN__(n)
	Align attribute padded to n.
#define	COLD__   __attribute__((cold))
	Cold attribute.
#define	DEPRECATED__   __attribute__((deprecated))
	Deprecated attribute.
#define	HOT__   __attribute__((hot))
	Hot attribute.
#define	INLINE__   __attribute__((always_inline))
	Always inline attribute.
#define	NONNULL__   __attribute__((nonnull))
	Non null attribute (all pointers will be checked)
#define	NONNULLX__(...)
	Non null attribute for ... pointers indexes.
#define	NORETURN__   __attribute__((__noreturn__))
	No return attribute.
#define	PACK__   __attribute__((packed))
	Packed attribute.
#define	PURE__   __attribute__((pure))
	Pure attribute.
#define	SECTION__(s)
	Section attribute to place declaration into section s.
#define	USED__   __attribute__((used))
	Used attribute ensures declaration won't be removed by garbage collector.
#define	NONNULL_INLINE__   ATTR__(nonnull, always_inline)
	Non null and Always inline attributes.
#define	PRINTF__(x, y)
	Printf format attribute.
#define	FMT_ARG__(x)
	Format argument attribute.
#define	SSO(o)
	Alias for Scalar Storage Order.
#define	BIG_ENDIAN__   ATTR__(packed, SSO(big-endian))
	Force structure in Big-Endian (use wisely or not at all)
#define	LITTLE_ENDIAN__   ATTR__(packed, SSO(little-endian))
	Force structure in Little-Endian (use wisely or not at all)
#define	__NOOPT__
	No Optimizations attribute.

Detailed Description

ARM common compilers attributes.

Author

SMFSW

Copyright

MIT (c) 2017-2026, SMFSW

Set attributes following compiler

MISRA C:2012 Deviations

Header scope deviation has been granted for following rules:
Rule-20.5 - Advisory: #undef (misra-c2012-20.5)
Rule-20.10 - Advisory: # and ## preprocessor operators (misra-c2012-20.10)

Header scope legitimate use derogation authorized for:
Rule-21.1 - Required: #define and #undef on reserved identifiers (misra-c2012-21.1)
Justification: #define are generic reserved identifiers for attributes.

Macro Definition Documentation

__IRQ

#define __IRQ   __attribute__((interrupt_handler))

Interrupt attribute.

__NOOPT__

#define __NOOPT__

No Optimizations attribute.

__WEAK

#define __WEAK   __attribute__((weak))

Weak attribute.

ALIGN__

#define ALIGN__

(

n

)

Value:

__attribute__((align(n)))

Align attribute padded to n.

ATTR__

#define ATTR__

(

...

)

Value:

__attribute__((__VA_ARGS__))

Macro to define one or multiple attribute(s) ... for a declaration.

BIG_ENDIAN__

#define BIG_ENDIAN__   ATTR__(packed, SSO(big-endian))

Force structure in Big-Endian (use wisely or not at all)

COLD__

#define COLD__   __attribute__((cold))

Cold attribute.

DEPRECATED__

#define DEPRECATED__   __attribute__((deprecated))

Deprecated attribute.

FMT_ARG__

#define FMT_ARG__

(

x

)

Value:

__attribute__((format_arg(x)))

Format argument attribute.

HOT__

#define HOT__   __attribute__((hot))

Hot attribute.

INLINE__

#define INLINE__   __attribute__((always_inline))

Always inline attribute.

LITTLE_ENDIAN__

#define LITTLE_ENDIAN__   ATTR__(packed, SSO(little-endian))

Force structure in Little-Endian (use wisely or not at all)

NONNULL__

#define NONNULL__   __attribute__((nonnull))

Non null attribute (all pointers will be checked)

NONNULL_INLINE__

#define NONNULL_INLINE__   ATTR__(nonnull, always_inline)

Non null and Always inline attributes.

NONNULLX__

#define NONNULLX__

(

...

)

Value:

__attribute__((nonnull(__VA_ARGS__)))

Non null attribute for ... pointers indexes.

NORETURN__

#define NORETURN__   __attribute__((__noreturn__))

No return attribute.

PACK__

#define PACK__   __attribute__((packed))

Packed attribute.

PRINTF__

#define PRINTF__	(		x,
			y )

Value:

__attribute__((format(printf, x, y)))

Printf format attribute.

PURE__

#define PURE__   __attribute__((pure))

Pure attribute.

SECTION__

#define SECTION__

(

s

)

Value:

__attribute__((section(#s)))

Section attribute to place declaration into section s.

SSO

#define SSO

(

o

)

Value:

scalar_storage_order(#o)

Alias for Scalar Storage Order.

USED__

#define USED__   __attribute__((used))

Used attribute ensures declaration won't be removed by garbage collector.