RFA: GDB manual: document restrictions on 'r' actions

[Jim Blandy <jimb@red-bean.com>]

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As per <http://sourceware.org/ml/gdb/2005-11/msg00419.html>.

gdb/doc/ChangeLog:
2005-11-21  Jim Blandy  <jimb@redhat.com>

	* gdb.texinfo (Tracepoint Packets): Document restrictions on
	placement of 'R' actions in tracepoint action packets; document
	dependence of 'X' and 'M' actions on a preceding 'R' action for
	their registers.

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gdb/doc/ChangeLog:
2005-11-21  Jim Blandy  <jimb@redhat.com>

	* gdb.texinfo (Tracepoint Packets): Document restrictions on
	placement of 'R' actions in tracepoint action packets; document
	dependence of 'X' and 'M' actions on a preceding 'R' action for
	their registers.

Index: gdb/doc/gdb.texinfo
===================================================================
RCS file: /cvs/src/src/gdb/doc/gdb.texinfo,v
retrieving revision 1.296
diff -c -p -r1.296 gdb.texinfo
*** gdb/doc/gdb.texinfo	20 Nov 2005 06:12:59 -0000	1.296
--- gdb/doc/gdb.texinfo	22 Nov 2005 04:56:24 -0000
*************** packet).
*** 23165,23171 ****
  
  Any number of actions may be packed together in a single @samp{QTDP}
  packet, as long as the packet does not exceed the maximum packet
! length (400 bytes, for many stubs).
  
  Replies:
  @table @samp
--- 23165,23176 ----
  
  Any number of actions may be packed together in a single @samp{QTDP}
  packet, as long as the packet does not exceed the maximum packet
! length (400 bytes, for many stubs).  There may be only one @samp{R}
! action per tracepoint, and it must precede any @samp{M} or @samp{X}
! actions.  Any registers referred to by @samp{M} and @samp{X} actions
! must be collected by a preceding @samp{R} action.  (The
! ``while-stepping'' actions are treated as if they were attached to a
! separate tracepoint, as far as these restrictions are concerned.)
  
  Replies:
  @table @samp