Radare2: drt with some options doesn't show registers

[j123123]

drt mmx, drt xmm and drt flg doesn't show any register in r2 debug mode

[radare]

Pla specify arch/os pair where this bug can be reproduced

On 25 Dec 2016, at 13:04, szt [e-mail] wrote:

drt mmx, drt xmm and drt flg doesn't show any register in r2 debug mode

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[j123123]

radare2 1.2.0-git 13307 @ linux-x86-64 git.1.1.0-37-gbc766ba
commit: bc766baf7375a1aa5151cd13ba354429aa0caa72 build: 2016-12-25

Ubuntu 16.04.1 LTS x86_64

$ r2 -d /bin/ls
...
[0x7f8571231cc0]> drt mmx
[0x7f8571231cc0]> drt xmm
[0x7f8571231cc0]> drt flg
[0x7f8571231cc0]> 

[sanguinawer]

Linux reg profile have all xmm,mmx,st grouped in fpu.
Theses command show it:
drt fpu
dr st0
dr xmm0h
drf
and u can modify using:
drm
Note: dr cant use in linux to modify fpu registers yet ...

Also u can use 'drp' to show the loaded profile.

[j123123]

@skuater OK, but what if I want to see only XMM, MMX or FLAGS register?
For exampe, drt drx works correctly and shows me all debug registers. When I type drt flg I expect to get something like
rflags = 0x00000200 eflags = 0x00000200 cf = 0x00000000 pf = 0x00000000 af = 0x00000000 zf = 0x00000000 sf = 0x00000000 tf = 0x00000000 if = 0x00000001 df = 0x00000000 of = 0x00000000
but I get nothing

[sanguinawer]

@j123123 no way , to solve this is needed do some changes into reg profile for linux. Ill try to implement when get some free time

[sanguinawer]

working on it

[XVilka]

@RKX1209 @SrimantaBarua FYI.

[ret2libc]

@abcSup could you please have a quick look at this when you have some time? It may be they are already fixed, but you know for sure better those parts of the code. Thanks!

[abcSup]

drt mmx and drt xmm work. But, drt flg does not work because it is skipped.
https://github.com/radareorg/radare2/blob/a64cd129511c178851f385e97759a2012ef71d0f/libr/debug/dreg.c#L151-L153
I think I could remove those lines and make a PR to close this issue if there is no issue along the way.