remote/1187: 'call' attempts additional remote 's'tep

[baccala at freesoft dot org]

>Number:         1187
>Category:       remote
>Synopsis:       'call' attempts additional remote 's'tep
>Confidential:   no
>Severity:       non-critical
>Priority:       low
>Responsible:    unassigned
>State:          open
>Class:          sw-bug
>Submitter-Id:   net
>Arrival-Date:   Thu Apr 24 00:38:00 UTC 2003
>Closed-Date:
>Last-Modified:
>Originator:     baccala at freesoft dot org
>Release:        gdb-5.2.1 gdb-5.3
>Organization:
>Environment:
i386 Linux host / powerpc remote stub
>Description:
after building either gdb-5.2.1 or gdb-5.3 for an Intel
host and powerpc target, then connecting to a remote
powerpc Linux kernel via serial stub, 'call' command
fails.  After creating a dummy stack frame, calling it,
returning, and getting the breakpoint, debugger attempts
to continue to program from that point (end of dummy)
resulting in various bizarre malfunctions
>How-To-Repeat:
compile gdb 5.2.1 or gdb 5.3 for intel host, powerpc target
connect to remote powerpc stub (linux-2.4.20 has a bug in
powerpc stub handling, requiring attached patch before it
works) then attempt 'call' command (with remote debugging on)
>Fix:
patch infrun.c at line 2563 (gdb-5.2) adding following code:
   if (stop_stack_dummy) { stop_stepping(ecs);  return; }
code probably should not reach this point during a stack
dummy call, but does
>Release-Note:
>Audit-Trail:
>Unformatted: