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Compiler-specific Features
Where:
val
is a compile-time constant integer whose range is:
0 ... 65535 if you are compiling source as ARM code
0 ... 255 if you are compiling source as Thumb code.
Errors
The compiler does not recognize the __breakpoint intrinsic when compiling for a target
that does not support the BKPT instruction. The compiler generates either a warning or
an error in this case.
The undefined instruction trap is taken if a BKPT instruction is executed on an
architecture that does not support it.
Example
void func(void)
{
...
__breakpoint(0xF02C);
...
}
See also
• BKPT on page 4-132 in the Assembler Guide.
4.7.2 __cdp
This intrinsic inserts a CDP or CDP2 instruction into the instruction stream generated by
the compiler. It enables you to include coprocessor data operations in your C or C++
code.
Syntax
__cdp(unsigned int coproc, unsigned int opcode1, unsigned int opcode2)
Where:
coproc
opcode1
Identifies the coprocessor the instruction is for.
coproc must be an integer in the range 0 to 15.
Is a coprocessor-specific opcode.
Add 0x100 to the opcode to generate a CDP2 instruction.
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