[PATCH] RISC-V: Add support for zama16b extension.

[Dongyan Chen]

This implements the zama16b extension, version 1.0[1].

[1]https://github.com/riscv/riscv-profiles/blob/main/src/rva23-profile.adoc

bfd/ChangeLog:

	* elfxx-riscv.c: Handle zama16b.

gas/ChangeLog:

	* NEWS: Updated.
	* testsuite/gas/riscv/march-help.l: Updated.

---
 bfd/elfxx-riscv.c                    | 1 +
 gas/NEWS                             | 2 ++
 gas/testsuite/gas/riscv/march-help.l | 1 +
 3 files changed, 4 insertions(+)

diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
index ec254915c76..28dde34a6e9 100644
--- a/bfd/elfxx-riscv.c
+++ b/bfd/elfxx-riscv.c
@@ -1369,6 +1369,7 @@ static struct riscv_supported_ext riscv_supported_std_z_ext[] =
   {"zaamo",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
   {"zabha",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
   {"zacas",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
+  {"zama16b",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
   {"zalrsc",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
   {"zawrs",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
   {"zfbfmin",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
diff --git a/gas/NEWS b/gas/NEWS
index b4fc2e9e9be..f1cb651a7fe 100644
--- a/gas/NEWS
+++ b/gas/NEWS
@@ -16,6 +16,8 @@

 * Add support for the x86 Zhaoxin PadLock XMODX instructions.

+* Add support for RISC-V zama16b extension with version 1.0.
+
 Changes in 2.44:

 * Add support for the x86 Intel Diamond Rapids AMX instructions, including
diff --git a/gas/testsuite/gas/riscv/march-help.l b/gas/testsuite/gas/riscv/march-help.l
index d77472fda9c..d406e9f9f64 100644
--- a/gas/testsuite/gas/riscv/march-help.l
+++ b/gas/testsuite/gas/riscv/march-help.l
@@ -35,6 +35,7 @@ All available -march extensions for RISC-V:
 	zabha                                   1.0
 	zacas                                   1.0
 	zalrsc                                  1.0
+	zama16b                                 1.0
 	zawrs                                   1.0
 	zfbfmin                                 1.0
 	zfa                                     1.0
--
2.43.0