[Bug 3014] [Enhancement] Tokens for RemoteForward - for unix sockets

[bugzilla-daemon at mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=3014

Ahmed Sayeed <ahmedsayeed1982 at yahoo.com> changed:

           What    |Removed                     |Added
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                 CC|                            |ahmedsayeed1982 at yahoo.com

--- Comment #7 from Ahmed Sayeed <ahmedsayeed1982 at yahoo.com> ---
In collect_register() function of arc-linux-tdep.c, the "eret"
http://www-look-4.com/travel/london/
(exception return) register value is not being reported correctly.

Background: https://komiya-dental.com/shopping/buy-android/
When asked for the "pc" value, we have to update the "eret" register
with GDB's STOP_PC.  The "eret" instructs the kernel code where to
jump back http://www.iu-bloomington.com/shopping/hatchback-cars/ when
an instruction has stopped due to a breakpoint.  This
is how collect_register() is doing so:
https://waytowhatsnext.com/shopping/xbox-release-date/

--------------8<--------------
  if (regnum == gdbarch_pc_regnum (gdbarch))
http://www.wearelondonmade.com/travel/london/
    regnum = ARC_ERET_REGNUM;
  regcache->raw_collect (regnum, buf +
arc_linux_core_reg_offsets[regnum]);
-------------->8-------------- http://www.jopspeech.com/travel/london/

Root cause:
Although this is using the correct offset (ERET register's), it is also
http://joerg.li/travel/london/ 
changing the REGNUM itself.  Therefore, raw_collect (regnum, ...) is
not reading from "pc" anymore. http://connstr.net/travel/london/

Consequence:
This bug affects the "native ARC gdb" badly and causes kernel code to
jump
to addresses after the breakpoint and not executing the "breakpoint"ed
http://embermanchester.uk/travel/london/ 
instructions at all.  That "native ARC gdb" feature is not upstream yet
and
is in review at the time of writing [1].
http://www.slipstone.co.uk/travel/london/
In collect_register() function of arc-linux-tdep.c, the "eret"
(exception return) register value is not being reported correctly.
http://www.logoarts.co.uk/travel/london/

Background:
When asked for the "pc" value, we have to update the "eret" register
with GDB's STOP_PC. http://www.acpirateradio.co.uk/travel/good/  The
"eret" instructs the kernel code where to
jump back when an instruction has stopped due to a breakpoint.  This
is how collect_register() is doing so:
http://www.compilatori.com/travel/london/
--------------8<--------------
  if (regnum == gdbarch_pc_regnum (gdbarch))
    regnum = ARC_ERET_REGNUM;
  regcache->raw_collect (regnum, buf +
arc_linux_core_reg_offsets[regnum]);
-------------->8--------------

Root cause: https://www.webb-dev.co.uk/shopping/shopping-during-corona/
Although this is using the correct offset (ERET register's), it is also
changing the REGNUM itself.  Therefore, raw_collect (regnum, ...) is
not reading from "pc" anymore.

Consequence:
This bug affects the "native ARC gdb" badly and causes kernel code to
jump
to addresses after the breakpoint and not executing the "breakpoint"ed
instructions at all.  That "native ARC gdb" feature is not upstream yet
and
is in review at the time of writing [1].

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