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Fix zero_ext documentation

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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.
This commit is contained in:
Antoine Tremblay 2016-04-13 12:36:24 -04:00
parent 1adc8a9a7f
commit b8162e5ac9
2 changed files with 5 additions and 2 deletions
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4
gdb/doc/ChangeLog
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@ -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.

3
gdb/doc/agentexpr.texi
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@ -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.