Texas Instruments TMS320C6 Series, User Manual

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Description of the C Source Debugger
1-2
1.1 Description of the C Source Debugger
The ’C6x C source debugging interface improves productivity by allowing you
to debug a program in the language it was written in. You can choose to debug
your programs in C, assembly language, or both. And, unlike many other de-
buggers, the ’C6x debugger’s higher level features are available even when
you’re debugging assembly language code.
The Texas Instruments advanced programmer’s interface is easy to learn and
use. Its friendly window-, mouse-, and menu-oriented interface reduces learn-
ing time and eliminates the need to memorize complex commands. The
debugger’s customizable displays and flexible command entry let you develop
a debugging environment that suits your needs. A shortened learning curve
and increased productivity reduce the software development cycle, so you’ll
get to market faster.
Figure 1–1 identifies several features of the debugger display.
Figure 1–1. The Basic Debugger Display
DISASSEMBLY
0000681c 00000000 NOP
00006820 003c54f4 call: STW,D2 A0,*B15––[2]
00006824 013c22f4 STW,D2 A2,*B15[1]
00006828 00000d10 B,S1 call+104 (000
0000682c 00008000 NOP 5
00006830 003c22e4 LDW,D2 *+B15[1],A0
00006834 00006000 NOP 4
00006838 0008667c STW,D2 A0,*+B14(0x86
0000683c 00001410 B,S1 call+160(0006
00006840 00008000 NOP 5
00006844 003c22e4 LDW,D2 *+B15[1],A0
00006848 00006000 NOP 4
0000684c 00002058 SHL,S1 A0,0x01,A0
00006850 0008677c STW,D2 A0,*+B14(0x86
00006854 00001190 B,S1 call+172 (000
00006858 00008000 NOP 5
0000685c 003c22e4 LDW,D2 ++B15[1],A0
CALLS
2: call()
1: main()
CPU
A0 00006998
B0 00000000
A1 00000001
B1 00000000
A2 00000000
B2 00000000
A3 00000000
B3 00000000
A4 00002a28
B4 00000000
A5 00000000
B5 00000000
A6 00000000
B6 00000000
A7 00000000
WATCH
1: str.a 0
2: F0 1.000000e
3: color GREEN
FILE: sample.c
0038 int aai[10][5];
0039 int *pi;
0040 char *xpc;
0041
0042
call(newvalue)
0043 int newvalue;
0044 {
0045 static in value = 0;
0046
0047
switch (newvalue & 3)
0048 {
0049 case 0 : str.a = newvalue; break;
0050 case 1 : str.b = ne 1;
0051 case 2 : str.c = newvalue * 2;
0052 case 3 : xcall(newvalue); break;
COMMAND
>>>
whatis str
struct xxx str;
step
DISP: astr[7]
a 123
b 555
c 75435
f1 3
f2 6
f3 0x00f000a
f4 [...]
DISP: astr[7].f4
[0] 0
[1] 9
[2] 7
[3] 54
[4] 3
[5] 3
[6] 4
[7] 123
[8] 4
[9] 789
Load Break Watch Memory MoDe Run=F5
Step=F8 Next=F10
Color
Pulldown
menus
Disassembly
display
C source
display
Interactive
command
entry and
history window
Scrolling data
displays with
on-screen,
interactive
editing
Function call
traceback
Natural-format
data displays
MEMORY
00007cdc 00000000
00007ce0 07d5142a
00007ce4 0780606a
00007ce8 0007fe2a
00007cec 0000006a
00007cf0 07bc01e2
00007cf4 07bf07a2
00007cf8 0700002a
00007cfc 0700606a
00007d00 013fe428
00007d04 01000068
00007d08 0fffd410
00007d0c 00004000
00007d10 003e8c28
00007d14 00000068
00007d18 0ffd8610
00007d1c 00004000
00007d20 003e9428
00007d24 00000068