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From: Nick Roberts <nick@nick.uklinux.net>
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Message-ID: <15936.19654.642542.951794@nick.uklinux.net>
Date: Tue, 04 Feb 2003 23:32:00 -0000
To: gdb@sources.redhat.com
Subject: Questions about GDB/MI
X-SW-Source: 2003-02/txt/msg00090.txt.bz2


I'm trying to get my head round GDB/MI and have a few simple/dumb questions:

Simple example in info pages:

You say:

>    -> -stop
>    <- (gdb)
> 
> and later: 
>
>    <- *stop,reason="stop",address="0x123",source="a.c:123"
>    <- (gdb)

I get:

-> -stop
<- ^error,msg="Undefined MI command: stop"
<- (gdb) 

You say:

>     -> print 1+2
>     <- ~3\n
>     <- (gdb)

I get:

-> print 1+2
<- &"print 1+2\n"
<- ~"$1 = 3"
<- ~"\n"
<- ^done
<- (gdb) 

Running a simple program, I get a sequence like:

-> -exec-next
<- ^running
<- (gdb) 
<- *stopped,reason="end-stepping-range",thread-id="0",frame={addr="0x08048578",func="main",args=[],file="myprog.c",line="18"}
<- (gdb) 

According to the GDB/MI Output Syntax shouldn't that be:

-> -exec-next
<- ^running
<- *stopped,reason="end-stepping-range",thread-id="0",frame={addr="0x08048578",func="main",args=[],file="myprog.c",line="18"}
<- (gdb) 

i.e isn't that one (gdb) too many?

My simple program prints out:

a[0]=0

shouldn't that be:

@"a[0]=0"

Annotation uses ^Z^Z to flag things which I guess is not normal output. What
would happen if the program being debugged printed out strings like *stopped
or ^running? These only contain ASCII characters after all.

And one question about the repository. I've checked out as Elena advised. I've
got the interp branch but every time I use `cvs update' in src, even without
the -d option it keeps on trying to give me other directories like binutils. I
have to go into gdb and do `cvs update' there where I just get gdbtk but I'm
worried that then I might be missing other files that I need..

Nick