To examine individual registers, use the print command with the register name prepended with the dollar sign ($). Commands showing all (or a subset of) the registers are specific for the mode; see examples below.
GDB Mode
The following command allows you to examine sets of registers:
info registers
For example:
(idb) print $sp
$14 = (void *) 0xbfffe2cc
(idb) print /x $sp
$15 = 0xbfffe2cc
(idb) info registers
$eax 0x1 1
$ecx 0xbfffe42c -1073748948
$edx 0xbfffe3b0 -1073749072
$ebx 0xb74e7d98 -1219592808
$esp [$sp] 0xbfffe2cc (void *) 0xbfffe2cc
$ebp [$fp] 0xbfffe398 (void *) 0xbfffe398
$esi 0xbfffe424 -1073748956
$edi 0xb74e567c -1219602820
$eip [$pc] 0x8051603 (void *) 0x8051603
$eflags 0x296 662
$cs 0x23 35
$ss 0x2b 43
$ds 0x2b 43
$es 0x2b 43
$fs 0x0 0
$gs 0x33 51
$orig_eax 0xffffffff -1
$fctrl 0x37f 895
$fstat 0x0 0
$ftag 0x0 0
$fiseg 0x0 0
$fioff 0x0 0
$foseg 0x0 0
$fooff 0x0 0
$fop 0x0 0
DBX Mode
To look at all the registers, use the printregs command. For example:
(idb) print $sp
-1073759092
(idb) printx $sp
0xbfffbc8c
(idb) printregs
$eax 0x1 1
$ecx 0xbfffbdec -1073758740
$edx 0xbfffbd70 -1073758864
$ebx 0xb74e7d98 -1219592808
$esp [$sp] 0xbfffbc8c -1073759092
$ebp [$fp] 0xbfffbd58 -1073758888
$esi 0xbfffbde4 -1073758748
$edi 0xb74e567c -1219602820
$eip [$pc] 0x8051603 134551043
$eflags 0x292 658
$cs 0x23 35
$ss 0x2b 43
$ds 0x2b 43
$es 0x2b 43
$fs 0x0 0
$gs 0x33 51
$orig_eax 0xffffffff -1
$fctrl 0x37f 895
$fstat 0x0 0
$ftag 0x0 0
$fiseg 0x0 0
$fioff 0x0 0
$foseg 0x0 0
$fooff 0x0 0
$fop 0x0 0
$f0 0x0 0
$f1 0x0 0
$f2 0x0 0
$f3 0x0 0
$f4 0x0 0
$f5 0x0 0
$f6 0x0 0
$f7 0x0 0
$xmm0 0x0 union {
v4_float = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_double = [0] = 0,[1] = 0;
v16_int8 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0,[8] = 0,[9] = 0,[10] = 0,[11] = 0,[12] = 0,[13] = 0,[14] = 0,[15] = 0;
v8_int16 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0;
v4_int32 = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_int64 = [0] = 0,[1] = 0;
}
$xmm1 0x0 union {
v4_float = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_double = [0] = 0,[1] = 0;
v16_int8 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0,[8] = 0,[9] = 0,[10] = 0,[11] = 0,[12] = 0,[13] = 0,[14] = 0,[15] = 0;
v8_int16 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0;
v4_int32 = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_int64 = [0] = 0,[1] = 0;
}
$xmm2 0x0 union {
v4_float = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_double = [0] = 0,[1] = 0;
v16_int8 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0,[8] = 0,[9] = 0,[10] = 0,[11] = 0,[12] = 0,[13] = 0,[14] = 0,[15] = 0;
v8_int16 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0;
v4_int32 = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_int64 = [0] = 0,[1] = 0;
}
$xmm3 0x0 union {
v4_float = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_double = [0] = 0,[1] = 0;
v16_int8 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0,[8] = 0,[9] = 0,[10] = 0,[11] = 0,[12] = 0,[13] = 0,[14] = 0,[15] = 0;
v8_int16 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0;
v4_int32 = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_int64 = [0] = 0,[1] = 0;
}
$xmm4 0x0 union {
v4_float = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_double = [0] = 0,[1] = 0;
v16_int8 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0,[8] = 0,[9] = 0,[10] = 0,[11] = 0,[12] = 0,[13] = 0,[14] = 0,[15] = 0;
v8_int16 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0;
v4_int32 = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_int64 = [0] = 0,[1] = 0;
}
$xmm5 0x0 union {
v4_float = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_double = [0] = 0,[1] = 0;
v16_int8 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0,[8] = 0,[9] = 0,[10] = 0,[11] = 0,[12] = 0,[13] = 0,[14] = 0,[15] = 0;
v8_int16 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0;
v4_int32 = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_int64 = [0] = 0,[1] = 0;
}
$xmm6 0x0 union {
v4_float = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_double = [0] = 0,[1] = 0;
v16_int8 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0,[8] = 0,[9] = 0,[10] = 0,[11] = 0,[12] = 0,[13] = 0,[14] = 0,[15] = 0;
v8_int16 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0;
v4_int32 = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_int64 = [0] = 0,[1] = 0;
}
$xmm7 0x0 union {
v4_float = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_double = [0] = 0,[1] = 0;
v16_int8 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0,[8] = 0,[9] = 0,[10] = 0,[11] = 0,[12] = 0,[13] = 0,[14] = 0,[15] = 0;
v8_int16 = [0] = 0,[1] = 0,[2] = 0,[3] = 0,[4] = 0,[5] = 0,[6] = 0,[7] = 0;
v4_int32 = [0] = 0,[1] = 0,[2] = 0,[3] = 0;
v2_int64 = [0] = 0,[1] = 0;
}
$mxcsr 0x1f80 8064
$vfp 0xbfffbd60 -1073758880
See also