[RFC PATCH 1/5] RISC-V: Add 'Zfh' and 'Zfhmin' extensions

[Tsukasa OI]

This commit adds 'Zfh' and 'Zfhmin' extensions.

bfd/ChangeLog:

	* elfxx-riscv.c (riscv_implicit_subsets): Add implicit subsets.
	(riscv_supported_std_z_ext): Add 'Zfh' and 'Zfhmin' extensions.
---
 bfd/elfxx-riscv.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
index 9f52bb545ac..dbe3611304b 100644
--- a/bfd/elfxx-riscv.c
+++ b/bfd/elfxx-riscv.c
@@ -1100,6 +1100,8 @@ static struct riscv_implicit_subset riscv_implicit_subsets[] =
   {"zvl64b", "zvl32b",		check_implicit_always},
   {"d", "f",		check_implicit_always},
   {"f", "zicsr",	check_implicit_always},
+  {"zfh", "zfhmin",	check_implicit_always},
+  {"zfhmin", "f",	check_implicit_always},
   {"zqinx", "zdinx",	check_implicit_always},
   {"zdinx", "zfinx",	check_implicit_always},
   {"zk", "zkn",		check_implicit_always},
@@ -1184,6 +1186,8 @@ static struct riscv_supported_ext riscv_supported_std_z_ext[] =
   {"zifencei",		ISA_SPEC_CLASS_20191213,	2, 0,  0 },
   {"zifencei",		ISA_SPEC_CLASS_20190608,	2, 0,  0 },
   {"zihintpause",	ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
+  {"zfh",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
+  {"zfhmin",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
   {"zfinx",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
   {"zdinx",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
   {"zqinx",		ISA_SPEC_CLASS_DRAFT,		1, 0,  0 },
-- 
2.32.0