MPLAB C Compiler for PIC24 MCUs and dsPIC DSCs ... - Microchip

16-Bit C Compiler User’s Guide
__builtin_muluu
Assembler Operator
/ Machine
Instruction:
__builtin_nop
mul.uu
Description: Generates a nop instruction.
Prototype: void __builtin_nop(void);
Argument: None.
Return Value: Returns a no operation (nop).
Assembler Operator
/ Machine
Instruction:
nop
__builtin_psvpage
Description: Returns the psv page number of the object whose address is given as a
parameter. The argument p must be the address of an object in an EE
data, PSV or executable memory space; otherwise an error message is
produced and the compilation fails. See the space attribute in
Section 2.3.1 “Specifying Attributes of Variables”.
Prototype: unsigned int __builtin_psvpage(const void *p);
Argument: p object address
Return Value: Returns the psv page number of the object whose address is given as a
parameter.
Assembler Operator
/ Machine
Instruction:
psvpage
Error Messages The following error message is produced when this function is used
incorrectly:
“Argument to __builtin_psvpage() is not the address of an object
in code, psv, or eedata section”.
The argument must be an explicit object address.
For example, if obj is object in an executable or read-only section, the
following syntax is valid:
unsigned page = __builtin_psvpage(&obj);
__builtin_psvoffset
Description: Returns the psv page offset of the object whose address is given as a
parameter. The argument p must be the address of an object in an EE
data, PSV or executable memory space; otherwise an error message is
produced and the compilation fails. See the space attribute in
Section 2.3.1 “Specifying Attributes of Variables”.
Prototype: unsigned int __builtin_psvoffset(const void *p);
Argument: p object address
Return Value: Returns the psv page number offset of the object whose address is
given as a parameter.
Assembler Operator
/ Machine
Instruction:
psvoffset
DS51284G-page 156 © 2008 Microchip Technology Inc.