* gdb.texinfo (Packets): Clarify lack of restrictions on behavior

of stub when processing an 'm' packet.

diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index 5af5143e47a56524e2662fffa7e43589f16674bf..fd6d5c1656e4f85dcac04e9a6a2295b401bb65d4 100644 (file)
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,5 +1,8 @@
 2005-11-15  Jim Blandy  <jimb@redhat.com>
 
+       * gdb.texinfo (Packets): Clarify lack of restrictions on behavior
+       of stub when processing an 'm' packet.
+
        * gdb.texinfo (Packets): Mention that packets beginning with
        letters are reserved once, at the top, instead of actually listing
        them all and saying "reserved".

diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 8b2e7c33922c5dff3ea2c5bd43b421a0e1b8ced6..a6b97b9d7a6147610ede37144e8e58bb133c6262 100644 (file)
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -22325,18 +22325,19 @@ thread?)}.
 @cindex @code{m} packet
 
 Read @var{length} bytes of memory starting at address @var{addr}.
-Neither @value{GDBN} nor the stub assume that sized memory transfers are
-assumed using word aligned accesses. FIXME: @emph{A word aligned memory
-transfer mechanism is needed.}
+Note that @var{addr} may not be aligned to any particular boundary.
+
+The stub need not use any particular size or alignment when gathering
+data from memory for the response; even if @var{addr} is word-aligned
+and @var{length} is a multiple of the word size, the stub is free to
+use byte accesses, or not.  For this reason, this packet may not be
+suitable for accessing memory-mapped I/O devices.
 
 Reply:
 @table @samp
 @item @var{XX@dots{}}
 @var{XX@dots{}} is mem contents. Can be fewer bytes than requested if able
-to read only part of the data.  Neither @value{GDBN} nor the stub assume
-that sized memory transfers are assumed using word aligned
-accesses. FIXME: @emph{A word aligned memory transfer mechanism is
-needed.}
+to read only part of the data.
 @item E@var{NN}
 @var{NN} is errno
 @end table