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From: "robert.pirvu at cyberthorstudios dot com"
 <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug mi/31448] New: [Feature Request] Register's bitfields MI
 Commands
Date: Mon, 04 Mar 2024 14:16:23 +0000
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D31448

            Bug ID: 31448
           Summary: [Feature Request] Register's bitfields MI Commands
           Product: gdb
           Version: unknown
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: mi
          Assignee: unassigned at sourceware dot org
          Reporter: robert.pirvu at cyberthorstudios dot com
  Target Milestone: ---

I'm working on a new functionality for Eclipse to allow Register View to
display bitfields.

For this, I propose two GDB MI Command changes:

    1. A new command to return a list of bitfields' names, similar to
-data-list-register-name.

Command: -data-list-register-bitfield-name (regno)=20
Response: ^done,register-bitfield-names=3D[{name=3D"reg0",
bitfields=3D["A","B","C"]},{name=3D"reg1", bitfields=3D["D","E"]}]

If regno(register's number) is specified then the response will contain only
the specified register.

    2. A new option "--with-bitfields" for -data-list-register-values to
include a list of bitfields' values. This option was suggested by Guinevere
Larsen to receive the necessary data and not change the default response of
this command. A similar approach can be used for the bitfields' names MI
Command as well if is a better implementation.=20=20=20

Command: -data-list-register-values --with-bitfields
Respone:
^done,register-values=3D[{number=3D"0",value=3D"0x0",bitfields=3D[0,0,0]},{=
number=3D"1",value=3D"0x1",bitfields=3D[0,0]}]

Format of the response:=20
[{number=3D"regNo",value=3D"regValue",bitfields=3D[bitVal1,bitVal2,bitVal3]=
}]

Initial thread of this
request:https://sourceware.org/pipermail/gdb/2024-February/051071.html

Any feedback regarding this feature is greatly appreciated and we are=20
open to contribute to its implementation.

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