| Table 1 Transcript of a typical gdb session
|
| What the user enters
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What happens on the serial port gdb sends...
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target responds with...
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| host>gdb myprogram
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|
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| gdb> target remote
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+$Hc1#09
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+$OK#9a
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| /dev/ttyS0
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+$qOffsets#4b
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+$Text=0;Data=0;Bss=0#04
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|
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+$?#3f
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+$S05#b8
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|
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+$g#67
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+$00001a00ffff81b200000020...
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| gdb> load
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$M401054,10:004020240040
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+$OK#
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|
|
20240040202400402024#72
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|
|
|
... [lots more M messages]
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|
| gdb> breakpoint main
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[nothing— gdb physically sets the breakpoint
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|
|
|
immediately before the continue command is sent]"
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|
| gdb> continue
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+$M4015cc,2:c320#6d
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+$OK#9a
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|
|
+$c#63
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+
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|
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[gdb places a
breakpoint
opcode at main()]"
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|
|
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[program runs until it reaches main()]"
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|
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$T050:00401400;1:00404850
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|
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;2:00000001;3:00000030;
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|
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4:ffffffff;5:00000000;6:00000
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|
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010;7:00000010;8:0040161c;
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9:00002070;a:00404068;b:
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|
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004015bc;c:ffffffff;d:ffffffef;
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|
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e:00404840;f:00404840;10:
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|
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004015cc;11:004015cc;12:
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|
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d04001e2;13:00401000;14:
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|
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00000000;15:00ffffff;16:0000
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|
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00f0;#d1
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|
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[target stopped at main(),
address 0x4015cc]"
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| gdb> display foo
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+$m4015bc,2#5a
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+$2f86#06
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|
|
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[foo is at address 0x4015bc;
its value is 0x2f86]"
|
| gdb> stepi
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$s#73
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+
|
|
|
|
[target executes one instruction]
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|
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$T050:00401400;1:00404840
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|
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;2:00000001;3:00000030;4:ff
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|
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ffffff;5:00000000;6:00000010
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;7:00000010;8:0040161c;9:0
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|
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0002070;a:00404068;b:0040
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|
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15bc;c:ffffffff;d:ffffffef;e:0040
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|
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4840;f:00404840;10:004015c
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|
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e;11:004015cc;12:d04001e2;
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|
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13:00401000;14:00000000;
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|
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15:00ffffff;16:000000f0;#d2
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|
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[PC is now 0x4015ce]
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|
|
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|
| gdb> quit
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$k#6b
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+
|
