# Vault 7: Projects

This publication series is about specific projects related to the Vault 7 main publication.

### Protego

# PIC24FJ64GA004 - Programmers Reference Manual

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© 2005-2011 Microchip Technology Inc. DS70157F-page 471
Section 6. Built-in Functions
Built-in Functions
6
__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” of the “MPLAB
®
C Compiler for PIC24
MCUs and dsPIC
®
DSCs User’s Guide” (DS51284).
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_readsfr
Description:
Reads the SFR.
Prototype:
unsigned int _ _builtin_readsfr(const void *p);
Argument:
p object address
Return Value:
Returns the SFR.
Assembler Operator / Machine Instruction:
readsfr
Error Messages:
The following error message is produced when this function is used incorrectly:

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