Re: Linux 2.6.3-rc1

[Andre Tomt]

Bartlomiej Zolnierkiewicz wrote:
> > > Can you disassemble ide_pci_register_host_proc using gdb?
> >
> > I'd need a walkthrough, not very familiar with gdb other than getting a
> > backtrace out of it
>
>
> Make sure to enable following options in kernel config:
> CONFIG_DEBUG_KERNEL ("Kernel hacking"->"Kernel debugging" ) and
> CONFIG_DEBUG_INFO ("Kernel debugging"->"Compile the kernel with debug info").
>
> Recompile kernel.
>
> $ gdb /usr/src/linux/vmlinux
> (gdb) disassemble ide_pci_register_host_proc
>
> That's all :-).

Ahh. However, as ide-core is a module in this case, I had to run gdb on 
the module instead. Anyway..

(gdb) disassemble ide_pci_register_host_proc
Dump of assembler code for function ide_pci_register_host_proc:
0xe940 <ide_pci_register_host_proc>:    mov    0x4(%esp,1),%ecx
0xe944 <ide_pci_register_host_proc+4>:  test   %ecx,%ecx
0xe946 <ide_pci_register_host_proc+6>:  je     0xe978 
<ide_pci_register_host_proc+56>
0xe948 <ide_pci_register_host_proc+8>:  movl   $0x0,0x10(%ecx)
0xe94f <ide_pci_register_host_proc+15>: movb   $0x1,0x4(%ecx)
0xe953 <ide_pci_register_host_proc+19>: mov    0x3910,%eax
0xe958 <ide_pci_register_host_proc+24>: test   %eax,%eax
0xe95a <ide_pci_register_host_proc+26>: je     0xe972 
<ide_pci_register_host_proc+50>
0xe95c <ide_pci_register_host_proc+28>: mov    %eax,%edx
0xe95e <ide_pci_register_host_proc+30>: mov    0x10(%eax),%eax
0xe961 <ide_pci_register_host_proc+33>: test   %eax,%eax
0xe963 <ide_pci_register_host_proc+35>: je     0xe96e 
<ide_pci_register_host_proc+46>
0xe965 <ide_pci_register_host_proc+37>: mov    %eax,%edx
0xe967 <ide_pci_register_host_proc+39>: mov    0x10(%eax),%eax
0xe96a <ide_pci_register_host_proc+42>: test   %eax,%eax
0xe96c <ide_pci_register_host_proc+44>: jne    0xe965 
<ide_pci_register_host_proc+37>
0xe96e <ide_pci_register_host_proc+46>: mov    %ecx,0x10(%edx)
0xe971 <ide_pci_register_host_proc+49>: ret
0xe972 <ide_pci_register_host_proc+50>: mov    %ecx,0x3910
0xe978 <ide_pci_register_host_proc+56>: ret
End of assembler dump.


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