Fix zero_ext documentation

This patch fixes the documentation for the zero_ext bytecode description.

It removes parts that seemed like a copy/paste from ext, since zero_ext
zeros the bits to the left.

gdb/doc/ChangeLog:

	* agentexpr.texi (zero_ext): Fix zero_ext description.

diff --git a/gdb/doc/ChangeLog b/gdb/doc/ChangeLog
index d113c62..59956ef 100644 (file)
--- a/gdb/doc/ChangeLog
+++ b/gdb/doc/ChangeLog
@@ -1,3 +1,7 @@
+2016-04-13  Antoine Tremblay  <antoine.tremblay@ericsson.com>
+
+       * agentexpr.texi (byte): Fix zero_ext description.
+
 2016-03-31  Pedro Alves  <palves@redhat.com>
 
        * gdb.texinfo (M32R/SDI): Delete node.

diff --git a/gdb/doc/agentexpr.texi b/gdb/doc/agentexpr.texi
index 731234d..ade7638 100644 (file)
--- a/gdb/doc/agentexpr.texi
+++ b/gdb/doc/agentexpr.texi
@@ -353,8 +353,7 @@ byte unsigned integer following the @code{ext} bytecode.
 
 @item @code{zero_ext} (0x2a) @var{n}: @var{a} @result{} @var{a}, zero-extended from @var{n} bits
 Pop an unsigned value from the stack; zero all but the bottom @var{n}
-bits.  This means that all bits to the left of bit @var{n-1} (where the
-least significant bit is bit 0) are set to the value of bit @var{n-1}.
+bits.
 
 The number of source bits to preserve, @var{n}, is encoded as a single
 byte unsigned integer following the @code{zero_ext} bytecode.