SW006012 Microchip Technology, SW006012 Datasheet - Page 141

• Manufacturer Part Number: SW006012
• Description: C COMPILER FOR DSPIC30F FAMILY
• Manufacturer: Microchip Technology
• Type: MPLAB® C30 Compilerr
• Series: PIC24 & DsPICr

Specifications of SW006012

• Supported Families: PIC24, DsPIC30F And DsPIC33F
• Core Architecture: PIC, DsPIC
• Kit Contents: Software And Docs
• Mcu Supported Families: PIC24 MCUs And DsPIC DSCs
• Tool Type: Compiler
• Processor Series: PIC24, dsPIC
• Lead Free Status / RoHS Status: Not applicable / Not applicable
• For Use With/related Products: dsPIC30F
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

© 2007 Microchip Technology Inc.
__
Description:
Prototype:
Argument:
Return Value:
Assembler Opera-
tor / Machine
Instruction:
Error Messages
__
Description:
Prototype:
Argument:
Return Value:
builtin_btg
builtin_clr
This function will generate a btg machine instruction.
Some examples include:
int i;
int l __attribute__((far));
struct foo {
} barbits;
int bar;
void some_bittoggles() {
}
Note that taking the address of a variable in a register will produce
warning by the compiler and cause the register to be saved onto the
stack (so that its address may be taken); this form is not recommended.
This caution only applies to variables explicitly placed in registers by
the programmer.
void __builtin_btg(unsigned int *, unsigned int
0xn);
*
0xn A literal value in the range of 0 to 15.
Returns a btg machine instruction.
btg
An error message will be displayed if the parameter values are not
within range
Clear the specified accumulator. For example:
will generate:
int __builtin_clr(void);
None
Returns the cleared value result to an accumulator.
int bit1:1;
register int j asm("w9");
int k;
k = i;
__builtin_btg(&i,1);
__builtin_btg(&j,3);
__builtin_btg(&k,4);
__builtin_btg(&l,11);
return j+k;
register int result asm("A");
result = __builtin_clr();
clr A
A pointer to the data item for which a bit should be toggled.
MPLAB C30 Built-in Functions
/* near by default */
DS51284F-page 135