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-rw-r--r--gas/doc/c-rl78.texi14
1 files changed, 12 insertions, 2 deletions
diff --git a/gas/doc/c-rl78.texi b/gas/doc/c-rl78.texi
index dce833b..a714548 100644
--- a/gas/doc/c-rl78.texi
+++ b/gas/doc/c-rl78.texi
@@ -32,6 +32,14 @@ Enable support for link-time relaxation.
Mark the generated binary as targeting the G10 variant of the RL78
architecture.
+@item m32bit-doubles
+Mark the generated binary as one that uses 32-bits to hold the
+@code{double} floating point type. This is the default.
+
+@item m64bit-doubles
+Mark the generated binary as one that uses 64-bits to hold the
+@code{double} floating point type.
+
@end table
@node RL78-Modifiers
@@ -85,8 +93,10 @@ In addition to the common directives, the RL78 adds these:
@table @code
@item .double
-Output a constant in ``double'' format, which is a 32-bit floating
-point value on RL78.
+Output a constant in ``double'' format, which is either a 32-bit
+or a 64-bit floating point value, depending upon the setting of the
+@option{-m32bit-doubles}|@option{-m64bit-doubles} command line
+option.
@item .bss
Select the BSS section.