ARM Compiler armcc User Guide : 10.22 _

10.22 __declspec attributes

The __declspec keyword enables you to specify special attributes of objects and functions.

For example, you can use the __declspec keyword to declare imported or exported functions and variables, or to declare Thread Local Storage (TLS) objects.

The __declspec keyword must prefix the declaration specification. For example:

__declspec(noreturn) void overflow(void);
__declspec(thread) int i;

The following table summarizes the available __declspec attributes. __declspec attributes are storage class modifiers. They do not affect the type of a function or variable.

Table 10-2 __declspec attributes that the compiler supports, and their equivalents

__declspec attribute	non __declspec equivalent
`__declspec(dllexport)`	-
`__declspec(dllimport)`	-
`__declspec(noinline)`	`__attribute__((noinline))`
`__declspec(noreturn)`	`__attribute__((noreturn))` ^a
`__declspec(nothrow)`	-
`__declspec(notshared)`	-
`__declspec(thread)`	-

A GNU compiler extension that the ARM compiler supports.

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