LC 22bit
6-122
LC 22bit
Long Call
SYNTAX OPTIONS
OPCODE
OBJMODE
RPT
CYC
LC 22bit
0000 0000 10CC CCCC
CCCC CCCC CCCC CCCC
X
−
4
Operands
22bit
22-bit program-address (0x00 0000 to 0x3F FFFF range)
Description
Long function call. The return PC value is pushed onto the software stack,
pointed to by SP register, in two 16-bit operations. Next, the immediate 22-bit
destination address is loaded onto the PC:
temp(21:0) = PC + 2;
[SP] = temp(15:0);
SP = SP + 1;
[SP] = temp(21:16)
SP = SP + 1;
PC = 22bit;
Note:
For more efficient function calls when operating with OBJMODE = 1, use the LCR and
LRETR instructions instead of the LC and LRET instructions.
Flags and
Modes
None
Repeat
This instruction is not repeatable. If this instruction follows the RPT
instruction, it resets the repeat counter (RPTC) and executes only once.
Example
; Standard function call of FuncA:
LC FuncA
; Call FuncA, return address on stack
.
.
FuncA:
; Function A:
.
.
LRET
; Return from address on stack
Содержание TMS320C28x
Страница 30: ...1 12...
Страница 80: ...This page intentionally left blank 2 50 This page intentionally left blank...
Страница 269: ...IN loc16 PA 6 112 MOV AL 0 AL 0 UOUT IORegC AL IOspace IORegC AL 10...
Страница 308: ...MAXCUL P loc32 6 151 Saturate MOVL Var64 2 ACC Store result into Var64 MOVL Var64 P...
Страница 509: ...SUBL ACC P PM 6 352 SUBL ACC P PM ACC S B 11 M X 4 MOVH Y ACC 5 Store Q15 result into Y...
Страница 585: ...This page intentionally left blank 7 32 This page intentionally left blank...