* config/tc-mips.c (file_mips_soft_float, file_mips_single_float):

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

diff --git a/gas/doc/c-mips.texi b/gas/doc/c-mips.texi
index 9f197268b016f59652c4f04ddbe3af980e166d97..136d2d22bff1a8d538c8134ef1c0ca6bc20db137 100644 (file)
--- a/gas/doc/c-mips.texi
+++ b/gas/doc/c-mips.texi
@@ -32,6 +32,7 @@ Assembly Language Programming'' in the same work.
 * MIPS option stack::  Directives to save and restore options
 * MIPS ASE instruction generation overrides:: Directives to control
                        generation of MIPS ASE instructions
+* MIPS floating-point:: Directives to override floating-point options
 @end menu
 
 @node MIPS Opts
@@ -270,7 +271,10 @@ m4kp,
 20kc,
 25kf,
 sb1,
-sb1a
+sb1a,
+loongson2e,
+loongson2f,
+octeon
 @end quotation
 
 For compatibility reasons, @samp{@var{n}x} and @samp{@var{b}fx} are
@@ -299,10 +303,21 @@ other assemblers, which use it to turn off C style preprocessing.  With
 @sc{gnu} @code{@value{AS}}, there is no need for @samp{-nocpp}, because the
 @sc{gnu} assembler itself never runs the C preprocessor.
 
+@item -msoft-float
+@itemx -mhard-float
+Disable or enable floating-point instructions.  Note that by default
+floating-point instructions are always allowed even with CPU targets
+that don't have support for these instructions.
+
+@item -msingle-float
+@itemx -mdouble-float
+Disable or enable double-precision floating-point operations.  Note
+that by default double-precision floating-point operations are always
+allowed even with CPU targets that don't have support for these
+operations.
+
 @item --construct-floats
 @itemx --no-construct-floats
-@cindex --construct-floats
-@cindex --no-construct-floats
 The @code{--no-construct-floats} option disables the construction of
 double width floating point constants by loading the two halves of the
 value into the two single width floating point registers that make up
@@ -577,3 +592,26 @@ in the assembly.  The @code{.set nomt} directive prevents MT
 instructions from being accepted.
 
 Traditional @sc{mips} assemblers do not support these directives.
+
+@node MIPS floating-point
+@section Directives to override floating-point options
+
+@cindex Disable floating-point instructions
+@kindex @code{.set softfloat}
+@kindex @code{.set hardfloat}
+The directives @code{.set softfloat} and @code{.set hardfloat} provide
+finer control of disabling and enabling float-point instructions.
+These directives always override the default (that hard-float
+instructions are accepted) or the command-line options
+(@samp{-msoft-float} and @samp{-mhard-float}).
+
+@cindex Disable single-precision floating-point operations
+@kindex @code{.set softfloat}
+@kindex @code{.set hardfloat}
+The directives @code{.set singlefloat} and @code{.set doublefloat}
+provide finer control of disabling and enabling double-precision
+float-point operations.  These directives always override the default
+(that double-precision operations are accepted) or the command-line
+options (@samp{-msingle-float} and @samp{-mdouble-float}).
+
+Traditional @sc{mips} assemblers do not support these directives.