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| author | H.J. Lu <hjl.tools@gmail.com> | 2003-06-10 06:46:34 +0000 |
|---|---|---|
| committer | H.J. Lu <hjl.tools@gmail.com> | 2003-06-10 06:46:34 +0000 |
| commit | 12b55ccc43340fd281f4eb8f4e6287f069799eab (patch) | |
| tree | 07448b880bb99a1529d20db334a82434b9918eb3 /gas/doc/c-i386.texi | |
| parent | 81cacc150bd3f44d24302def2fdb6cd86e36ace2 (diff) | |
| download | gdb-12b55ccc43340fd281f4eb8f4e6287f069799eab.zip gdb-12b55ccc43340fd281f4eb8f4e6287f069799eab.tar.gz gdb-12b55ccc43340fd281f4eb8f4e6287f069799eab.tar.bz2 | |
2003-06-09 H.J. Lu <hongjiu.lu@intel.com>
* NEWS: Updated for the new -n option for the i386 assembler.
* config/tc-i386.c (optimize_align_code): New.
(md_shortopts): Add 'n'.
(md_parse_option): Handle 'n'.
(md_show_usage): Add '-n'.
* config/tc-i386.h (optimize_align_code): Declared.
(md_do_align): Optimize code alignment only if optimize_align_code
is not 0.
* doc/as.texinfo: Add the new -n option.
* doc/c-i386.texi: Document the new -n option.
Diffstat (limited to 'gas/doc/c-i386.texi')
| -rw-r--r-- | gas/doc/c-i386.texi | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gas/doc/c-i386.texi b/gas/doc/c-i386.texi index 1527c8d..f0047f9 100644 --- a/gas/doc/c-i386.texi +++ b/gas/doc/c-i386.texi @@ -61,6 +61,11 @@ These options are only available with the ELF object file format, and require that the necessary BFD support has been included (on a 32-bit platform you have to add --enable-64-bit-bfd to configure enable 64-bit 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. @end table @node i386-Syntax |