[binutils-gdb] gdb: Document floating-point support for LoongArch

[Tiezhu Yang <yangtiezhu@sourceware.org>]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e24500cbab783d42656d3b745947c98d7d5bdd83

commit e24500cbab783d42656d3b745947c98d7d5bdd83
Author: Tiezhu Yang <yangtiezhu@loongson.cn>
Date:   Thu Jul 14 15:00:00 2022 +0800

    gdb: Document floating-point support for LoongArch
    
    Update NEWS and gdb.texinfo to document floating-point support
    for LoongArch.
    
    Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>

Diff:
---
 gdb/NEWS            | 4 ++++
 gdb/doc/gdb.texinfo | 4 ++++
 2 files changed, 8 insertions(+)

diff --git a/gdb/NEWS b/gdb/NEWS
index 742f4fe47fb..3c82d6d8cb0 100644
--- a/gdb/NEWS
+++ b/gdb/NEWS
@@ -153,6 +153,10 @@ GNU/Linux/LoongArch (gdbserver)	loongarch*-*-linux*
 
   ** GDBserver is now supported on LoongArch GNU/Linux.
 
+* LoongArch floating-point support
+
+GDB now supports floating-point on LoongArch GNU/Linux.
+
 *** Changes in GDB 12
 
 * DBX mode is deprecated, and will be removed in GDB 13
diff --git a/gdb/doc/gdb.texinfo b/gdb/doc/gdb.texinfo
index 9a8b010476a..1c017e44b37 100644
--- a/gdb/doc/gdb.texinfo
+++ b/gdb/doc/gdb.texinfo
@@ -47174,6 +47174,10 @@ targets.  It should contain the registers @samp{r0} through @samp{r31},
 @samp{pc}, and @samp{badv}.  Either the architectural names (@samp{r0},
 @samp{r1}, etc) can be used, or the ABI names (@samp{zero}, @samp{ra}, etc).
 
+The @samp{org.gnu.gdb.loongarch.fpu} feature is optional.  If present,
+it should contain registers @samp{f0} through @samp{f31}, @samp{fcc},
+and @samp{fcsr}.
+
 @node MicroBlaze Features
 @subsection MicroBlaze Features
 @cindex target descriptions, MicroBlaze features