diff options
Diffstat (limited to 'gas/doc/c-sparc.texi')
| -rw-r--r-- | gas/doc/c-sparc.texi | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/gas/doc/c-sparc.texi b/gas/doc/c-sparc.texi index adbe299..ab54eb2 100644 --- a/gas/doc/c-sparc.texi +++ b/gas/doc/c-sparc.texi @@ -160,8 +160,11 @@ line is also ignored. @item .register This directive declares use of a global application or system register. It must be followed by a register name %g2, %g3, %g6 or %g7, comma and -the symbol name for that register or @code{#scratch} if it is a scratch -register. +the symbol name for that register. If symbol name is @code{#scratch}, +it is a scratch register, if it is @code{#ignore}, it just surpresses any +errors about using undeclared global register, but does not emit any +information about it into the object file. This can be useful e.g. if you +save the register before use and restore it after. @cindex @code{reserve} directive, SPARC @item .reserve |