Hi guys,

This drops the last bits of ONE_PROCESS_WRITETEXT macro from the
codebase, since no target/host actually defines this by now.

The "It might be running in another process" notice in normal_stop
when breakpoints fail to be removed is quite likelly related to this, and
although wasn't conditionalized on ONE_PROCESS_WRITETEXT, should be dropped as
well IMO, as it is confusing.  Would anyone miss it?  This was the 
reason I haven't checked it in as obvious yet.

The most complete description I could find of this macro was in gdb 4.6
sources:

 gdb/xm-hp300bsd.h-64-/* Kernel is a bit tenacious about sharing text segments, disallowing bpts.  */
 gdb/xm-hp300bsd.h:65:#define    ONE_PROCESS_WRITETEXT

 @c FIXME: "cannot insert breakpoints" error, v unclear.
 @c        Q in pending mail to Gilmore. ---pesch@cygnus.com, 26mar91
 @c        some light may be shed by looking at instances of
 @c        ONE_PROCESS_WRITETEXT.  But error message seems possible otherwise
 @c        too.  pesch, 20sep91
 Under some operating systems, breakpoints cannot be used in a program if
 any other process is running that program.  In this situation,
 attempting to run or continue a program with a breakpoint causes _GDBN__
 to stop the other process.

 When this happens, you have three ways to proceed:

 @enumerate
 @item
 Remove or disable the breakpoints, then continue.

 @item
 Suspend _GDBN__, and copy the file containing your program to a new name.
 Resume _GDBN__ and use the @code{exec-file} command to specify that _GDBN__
 should run your program under that name.  Then start your program again.

 @c FIXME: RMS commented here "Show example".  Maybe when someone
 @c explains the first FIXME: in this section...

And in this 1991 ChangeLog entry:

 Mon Sep  9 13:45:57 1991  John Gilmore  (gnu at cygint.cygnus.com)

        * breakpoint.c (insert_breakpoints):  Restore warning about
        the program might be running in another process, but only for
        systems with this brain death (#ifdef ONE_PROCESS_WRITETEXT).
        * xm-hp300bsd.h, xm-mips.h, xm-vax.h:  Define it.

I don't think we care about systems with this brain death anymore ...

-- 
Pedro Alves