RealView Compilation Tools Compiler Reference Guide - ARM ...

Compiler-specific Features
The __ldrex intrinsic does not support access to doubleword data. The compiler
generates an error if you specify an access width that is not supported.
Example
int foo(void)
{
int loc = 0xff;
return __ldrex((volatile char *)loc);
}
Compiling this code with the command-line option --cpu=6k produces
||foo|| PROC
MOV
LDREXB
BX
ENDP
r0,#0xff
r0,[r0]
lr
See also
• __strex on page 4-89
• LDREX and STREX on page 4-35 in the Assembler Guide.
4.7.21 __ldrt
This intrinsic inserts an assembly language instruction of the form LDR{size}T into the
instruction stream generated by the compiler. It enables you to load data from memory
in your C or C++ code using an LDRT instruction.
Syntax
unsigned int __ldrt(const volatile void *ptr)
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