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Compiler-specific Features
ptr
points to the address of the data to be written to in memory. To specify
the size of the data to be written, cast the parameter to an appropriate
integral type.
Table 4-12 Access widths supported by the __strexd intrinsic
Instruction Size of data stored C cast
STREXD unsigned long long (unsigned long long *)
STREXD signed long long (signed long long *)
Return value
The __strexd intrinsic returns:
0 if the STREXD instruction succeeds
1 if the STREXD instruction is locked out.
Errors
The compiler does not recognize the __strexd intrinsic when compiling for a target that
does not support the STREXD instruction. The compiler generates either a warning or an
error in this case.
The __strexd intrinsic only supports access to doubleword data. The compiler generates
an error if you specify an access width that is not supported.
See also
• __ldrex on page 4-84
• __ldrexd on page 4-86
• __strex on page 4-101
• LDREX and STREX on page 4-36 in the Assembler Guide.
4.7.38 __strt
This intrinsic inserts an assembly language instruction of the form STR{size}T into the
instruction stream generated by the compiler. It enables you to store data to memory in
your C or C++ code using an STRT instruction.
Syntax
void __strt(unsigned int val, volatile void *ptr)
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