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| author | Jim Wilson <jimw@sifive.com> | 2017-11-29 10:22:26 -0800 |
|---|---|---|
| committer | Jim Wilson <jimw@sifive.com> | 2017-11-29 10:22:26 -0800 |
| commit | f923328821e2e835c725822bce2aac6e10c52dd9 (patch) | |
| tree | 04469c8fdde414d8c6eb775806bd36b1e1b22d52 /gas/doc | |
| parent | f10e937a1cdcffcca748c226ed78d09369fc4cd0 (diff) | |
| download | gdb-f923328821e2e835c725822bce2aac6e10c52dd9.zip gdb-f923328821e2e835c725822bce2aac6e10c52dd9.tar.gz gdb-f923328821e2e835c725822bce2aac6e10c52dd9.tar.bz2 | |
In x86 -n docs, mention that you need an explicit nop fill byte.
gas/
PR gas/22464
* doc/c-i386.texi (-n): Clarify docs.
Diffstat (limited to 'gas/doc')
| -rw-r--r-- | gas/doc/c-i386.texi | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi index a1d33bd..a0e280c 100644 --- a/gas/doc/c-i386.texi +++ b/gas/doc/c-i386.texi @@ -74,7 +74,8 @@ usage and use x86-64 as target platform). @item -n By default, x86 GAS replaces multiple nop instructions used for alignment within code sections with multi-byte nop instructions such -as leal 0(%esi,1),%esi. This switch disables the optimization. +as leal 0(%esi,1),%esi. This switch disables the optimization if a single +byte nop (0x90) is explicitly specified as the fill byte for alignment. @cindex @samp{--divide} option, i386 @item --divide |