RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler-specific Features
4.2 __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;
Table 4-2 summarizes the available __declspec attributes. __declspec attributes are
storage class modifiers. They do not affect the type of a function or variable.
Table 4-2 __declspec attributes supported by the compiler and their equivalents
__declspec attribute
non __declspec equivalent
__declspec(dllexport) -
__declspec(dllimport) -
__declspec(noinline)
__declspec(noreturn)
__attribute__((noinline))
__attribute__((noreturn))
__declspec(nothrow) -
__declspec(notshared) -
__declspec(thread) -
4.2.1 __declspec(dllexport)
The __declspec(dllexport) attribute exports the definition of a symbol through the
dynamic symbol table when building DLL libraries.
Usage
When an inline function is marked __declspec(dllexport), the function definition might
be inlined, but an out-of-line instance of the function is always generated, and exported,
in the same way as for a non-inline function.
See also
• __declspec(dllimport) on page 4-25.
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