(gdb) disas chan_window_size
Dump of assembler code for function chan_window_size:
0x80026bd6 <chan_window_size+0>:        sub    $0x10,%esp
0x80026bd9 <chan_window_size+3>:        mov    0x14(%esp,1),%eax
0x80026bdd <chan_window_size+7>:        mov    (%eax),%edx
0x80026bdf <chan_window_size+9>:        cmp    %eax,%edx
0x80026be1 <chan_window_size+11>:       je     0x80026bef <chan_window_size+25>
0x80026be3 <chan_window_size+13>:       testb  $0x1,0xc(%edx)
0x80026be7 <chan_window_size+17>:       jne    0x80026bf5 <chan_window_size+31>
0x80026be9 <chan_window_size+19>:       mov    (%edx),%edx
0x80026beb <chan_window_size+21>:       cmp    %eax,%edx
0x80026bed <chan_window_size+23>:       jne    0x80026be3 <chan_window_size+13>
0x80026bef <chan_window_size+25>:       xor    %eax,%eax
0x80026bf1 <chan_window_size+27>:       add    $0x10,%esp
0x80026bf4 <chan_window_size+30>:       ret
0x80026bf5 <chan_window_size+31>:       mov    0x18(%edx),%ecx
0x80026bf8 <chan_window_size+34>:       mov    0x1c(%ecx),%eax
0x80026bfb <chan_window_size+37>:       test   %eax,%eax
0x80026bfd <chan_window_size+39>:       je     0x80026bef <chan_window_size+25>
0x80026bff <chan_window_size+41>:       mov    0x1c(%esp,1),%eax
0x80026c03 <chan_window_size+45>:       mov    %eax,0xc(%esp,1)
0x80026c07 <chan_window_size+49>:       mov    0x18(%esp,1),%eax
0x80026c0b <chan_window_size+53>:       mov    %eax,0x8(%esp,1)
0x80026c0f <chan_window_size+57>:       mov    0x1c(%edx),%eax
0x80026c12 <chan_window_size+60>:       mov    %eax,0x4(%esp,1)
0x80026c16 <chan_window_size+64>:       mov    0x10(%edx),%eax
0x80026c19 <chan_window_size+67>:       mov    %eax,(%esp,1)
0x80026c1c <chan_window_size+70>:       call   *0x1c(%ecx)
0x80026c1f <chan_window_size+73>:       jmp    0x80026bf1 <chan_window_size+27>
End of assembler dump.