[PATCH] RISC-V: Add Zama16b extension support

[Wang Yaduo]

bfd/ChangeLog:

	* elfxx-riscv.c (riscv_supported_std_z_ext): Add Zama16b.

gas/ChangeLog:

	* NEWS: Mention Zama16b.
	* testsuite/gas/riscv/march-help.l: Add Zama16b.
---
Hi all,

I noticed that using -march with zama16b on current trunk triggers an
assembler error(https://godbolt.org/z/ed1EdfaKr). GCC has supported the
extension but it seems that the binutils misses it.

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

diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
index c3cb4197ba8..0895128c048 100644
--- a/bfd/elfxx-riscv.c
+++ b/bfd/elfxx-riscv.c
@@ -1494,6 +1494,7 @@ static const struct riscv_supported_ext riscv_supported_std_z_ext[] =
   {"zacas",		ISA_SPEC_CLASS_DRAFT,		1, 0, 0 },
   {"zalasr",           ISA_SPEC_CLASS_DRAFT,           1, 0,  0 },
   {"zalrsc",		ISA_SPEC_CLASS_DRAFT,		1, 0, 0 },
+  {"zama16b",		ISA_SPEC_CLASS_DRAFT,		1, 0, 0 },
   {"zawrs",		ISA_SPEC_CLASS_DRAFT,		1, 0, 0 },
   {"zfbfmin",		ISA_SPEC_CLASS_DRAFT,		1, 0, 0 },
   {"zfa",		ISA_SPEC_CLASS_DRAFT,		1, 0, 0 },
diff --git a/gas/NEWS b/gas/NEWS
index 165e23361bb..940e8f9dd19 100644
--- a/gas/NEWS
+++ b/gas/NEWS
@@ -19,6 +19,7 @@ Changes in 2.47:
 
 * Add support for RISC-V standard extensions:
   zalasr v1.0, svrsw60t59b v1.0, zvabd v1.0, smpmpmt v1.0,
+  zama16b v1.0,
   zvqwdota8i, zvqwdota16i, zvfwdota16bf and zvfqwdota8f v1.0,
   zvqwbdota8i, zvqwbdota16i, zvfwbdota16bf, zvfqwbdota8f and
   zvfbdota32f v1.0.
diff --git a/gas/testsuite/gas/riscv/march-help.l b/gas/testsuite/gas/riscv/march-help.l
index 142369b6b1d..0ad33ddc9f9 100644
--- a/gas/testsuite/gas/riscv/march-help.l
+++ b/gas/testsuite/gas/riscv/march-help.l
@@ -37,6 +37,7 @@ All available -march extensions for RISC-V:
 	zacas                                   1.0
 	zalasr                                  1.0
 	zalrsc                                  1.0
+	zama16b                                 1.0
 	zawrs                                   1.0
 	zfbfmin                                 1.0
 	zfa                                     1.0
-- 
2.47.1