Texas Instruments TMS320C28x Reference Manual page 252

FFC XAR7,22bit
SYNTAX OPTIONS
FFC XAR7,22bit
Operands XAR7
22bit
Description
Flags and
Modes
Repeat
Example
;
Fast function call of FuncA:
FFC
FuncA:
LB
Auxiliary register XAR7
22-bit program-address (0x00 0000 to 0x3F FFFF range)
Fast function call. The return PC value is stored into the XAR7 register and
the 22-bit immediate destination address is loaded into the PC:
XAR7(21:0) = PC + 2;
XAR7(31:22) = 0;
PC = 22 bit;
None
This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only once.
XAR7,FuncA
.
.
.
.
*XAR7
OPCODE
0000 0000 11CC CCCC
CCCC CCCC CCCC CCCC
; Call FuncA, return address in XAR7
; Function A:
; Return: branch to address in XAR7
FFC XAR7,22bit
Fast Function Call
OBJMODE RPT CYC
X − 4
6-95