[OSy] gdb how

Adam Hornáček ado.hornacek at gmail.com
Tue Nov 8 11:40:14 CET 2016


Are you using /usr/local/cross/mips32/bin/mipsel-linux-gnu-gdb ?
> On 8 Nov 2016, at 11:37, Artur Finger <fingerartur at gmail.com> wrote:
> 
> I'm getting this:
> 
> target remote localhost:3000
> warning: No executable has been specified and target does not support
> determining executable automatically.  Try using the "file" command. 
> 0x00000000 in ?? ()
> (gdb) break frame_init
> Breakpoint 1 at 0x8000b150: file mm/falloc.c, line 100.
> (gdb) c
> Continuing.
> Warning:
> Cannot insert breakpoint 1.
> Cannot access memory at address 0x8000b150 
> Command aborted.
> 
> 
> On 8 November 2016 at 08:04, Jan Hrach <jenda at yakumo.hrach.eu <mailto:jenda at yakumo.hrach.eu>> wrote:
> $ msim -g 3000
> 
> $ gdb   (the mipsel version, of course)
> symbol-file kernel/kernel.raw
> set endian little
> target remote localhost:3000
> break frame_init
> c
> p npages
> 
> 
> On 8.11.2016 07:54, Artur Finger wrote:
> > Hello, could you please give me a simple example of how to debug function frame_init() (in mm/falloc.c) with gdb? (eg. look at the value of variable A in frame_init())
> >
> > Have a nice day,
> > Artur Finger
> >
> >
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> >
> 
> 
> --
> Jan Hrach | https://jenda.hrach.eu/ <https://jenda.hrach.eu/>
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> 
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