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From: "rajesh.palla at amd dot com" <sourceware-bugzilla@sourceware.org>
To: gdb-prs@sourceware.org
Subject: [Bug gdb/30825] New: GDB doesn't send Hg packet when switching the
 inferiors
Date: Tue, 05 Sep 2023 10:54:34 +0000
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X-Bugzilla-Type: new
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X-Bugzilla-Product: gdb
X-Bugzilla-Component: gdb
X-Bugzilla-Version: 12.1
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X-Bugzilla-Severity: normal
X-Bugzilla-Who: rajesh.palla at amd dot com
X-Bugzilla-Status: UNCONFIRMED
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X-Bugzilla-Priority: P2
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https://sourceware.org/bugzilla/show_bug.cgi?id=3D30825

            Bug ID: 30825
           Summary: GDB doesn't send Hg packet when switching the
                    inferiors
           Product: gdb
           Version: 12.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: gdb
          Assignee: unassigned at sourceware dot org
          Reporter: rajesh.palla at amd dot com
  Target Milestone: ---

When we switch the inferiors using infe command, I am expecting GDB to send=
 Hg
Packet to the remote stub so that the remote stub can work on the selected
inferior.

But GDB isn't sending the Hg packet every time.=20
In a scenario where I have two inferiors, if I switch the inferiors without
doing any operation, I don't see Hg Packet after first time

infe 1
infe 2=20
infe 1
infe 2

Output log:
GDB -> $Hgp1.1#af
GDB <- $OK#9a
GDB -> $g#67
GDB <- $0000000000e0030000.....#49


Is it expected to invalidate the pc register from regcache in
<arch>_unwind_pc(). Because if I do so, it works but that will add more lat=
ency
when we give step command etc..(it sends more g packets)

Any solution?

--=20
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