RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler-specific Features
Although related, this function attribute is not equivalent to the __pure keyword. The
function attribute equivalent to __pure is __attribute__((const)).
Example
int Function_Attributes_pure_0(int b) __attribute__ ((pure));
int Function_Attributes_pure_0(int b)
{
static int aStatic;
aStatic++;
return b++;
}
int Function_Attributes_pure_2(int b)
{
int aLocal=0;
aLocal += Function_Attributes_pure_0(b);
return 0;
}
The call to Function_Attributes_pure_0 in this example might be eliminated because its
result is not used.
4.3.9 __attribute__((section))
The section function attribute enables you to place code in different sections of the
image.
Note
This function attribute is a GNU compiler extension that is supported by the ARM
compiler.
Example
In the following example, Function_Attributes_section_0 is placed into the RO section
new_section rather than .text.
void Function_Attributes_section_0 (void)
__attribute__ ((section ("new_section")));
void Function_Attributes_section_0 (void)
{
static int aStatic =0;
aStatic++;
}
4-34 Copyright © 2007, 2010 ARM Limited. All rights reserved. ARM DUI 0348A
Non-Confidential