Jakub Jelinek <jj@ultra.linux.cz>

[deliverable/binutils-gdb.git] / gas / doc / c-sparc.texi

diff --git a/gas/doc/c-sparc.texi b/gas/doc/c-sparc.texi
index adbe29956a018453ad36175c4b665189349baf25..ab54eb2d8895aa62f9d1a5d2e8f9b392da2415e8 100644 (file)
--- 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