Texas Instruments TMS320C54x, User Manual

Page: 386 / 469

Define a Function
.func/.endfunc
B-5 Symbolic Debugging Directives
Resulting assembly language code:
8 .global _power
9 .sym _power,_power,36,2,0
10 .func 3
11
12
;***************************************************************
13 ;* FUNCTION DEF: _power *
14 ;***************************************************************
15 000000 _power:
16 000000 eefd FRAME #–3
17 000001 f495 nop
18 ;* A assigned to _x
19 .sym _x,0,4,17,16
20 .sym _n,4,4,9,16
21 .sym _x,0,4,1,16
22 .sym _i,1,4,1,16
23 .sym _p,2,4,1,16
24 .line 3
25 000002 8000 STL A,*SP(0)
26 .line 5
27 000003 7602 ST #1,*SP(2)
000004 0001
28 .line 6
29 000005 7601 ST #1,*SP(1)
000006 0001
30 000007 f7b8 SSBX SXM
31 000008 f495 nop
32 000009 1004 LD *SP(4),A
33 00000a 0801 SUB *SP(1),A
34 00000b f843 BC L3,ALT
00000c 0018’
35 ; branch occurs
36 00000d L2:
37 .line 7
38 00000d 4400 LD *SP(0),16,A
39 00000e 3102 MPYA *SP(2)
40 00000f 8102 STL B,*SP(2)
41 .line 6
42 000010 6b01 ADDM #1,*SP(1)
000011 0001
43 000012 f7b8 SSBX SXM
44 000013 f495 nop
45 000014 1004 LD *SP(4),A
46 000015 0801 SUB *SP(1),A
47 000016 f842 BC L2,AGEQ
000017 000d’
48 ; branch occurs
49 000018 L3:
50 .line 8
51 000018 1002 LD *SP(2),A
52 .line 9
53 000019 ee03 FRAME #3
54 00001a fc00 RET
55 ; return occurs
56 .endfunc 9,000000000h, 3