This is the display of my gdb
(gdb) x/20bx 0xbffff2c0
0xbffff2c0: 0xd4 0xf2 0xff 0xbf 0x16 0x8f 0x04 0x08
0xbffff2c8: 0x05 0x00 0x00 0x00 0x00 0x00 0x0c 0x42
0xbffff2d0: 0x6b 0x00 0x00 0x00
Is is possible to change it to 4 bytes in a row?
gdb (at least in the 7.1 and 7.6 source I looked at) hard-wires the maximum number of elements per line that x will print, based on the format.
maxelts = 8;
if (size == 'w')
maxelts = 4;
if (size == 'g')
maxelts = 2;
if (format == 's' || format == 'i')
maxelts = 1;
A workaround to get what you want is to type x/4bx 0xbffff2c0 to print 4 elements and then type just enter to print each successive set of 4 elements.
Use x/20wx
(gdb) x/20bx &result
0x7fff5fbff5f4: 0xff 0x7f 0x00 0x00 0x5e 0x10 0xc0 0x5f
0x7fff5fbff5fc: 0xff 0x7f 0x00 0x00 0x10 0xf6 0xbf 0x5f
0x7fff5fbff604: 0xff 0x7f 0x00 0x00
(gdb) x/20wx &result
0x7fff5fbff5f4: 0x00007fff 0x5fc0105e 0x00007fff 0x5fbff610
0x7fff5fbff604: 0x00007fff 0x8994d5fd 0x00007fff 0x00000000
0x7fff5fbff614: 0x00000000 0x00000001 0x00000000 0x5fbff7e8
0x7fff5fbff624: 0x00007fff 0x00000000 0x00000000 0x5fbff804
0x7fff5fbff634: 0x00007fff 0x5fbff830 0x00007fff 0x5fbff847
0xbffff2c0' row 2 start from 0xbffff2c4`.. Sorry for didn't make things clearI use python to wrap the original output from gdb, then adjust it's format as requested in the question, then output to the console.
@user229044 I think you should focus on the method I provide.
