RISC-V: Add zhinx extension supports.

The zhinx extension is a sub-extension in zfinx, corresponding to
zfh extension but use GPRs instead of FPRs.

This patch expanded the zfh insn class define, since zfh and zhinx
use the same opcodes, thanks for Nelson's works.

changelog in V2: Add missing classes of 'zfh' and 'zhinx' in
"riscv_multi_subset_supports_ext".

bfd/ChangeLog:

        * elfxx-riscv.c (riscv_multi_subset_supports): New extensions.
        (riscv_multi_subset_supports_ext): New extensions.

gas/ChangeLog:

        * testsuite/gas/riscv/fp-zhinx-insns.d: New test.
        * testsuite/gas/riscv/fp-zhinx-insns.s: New test.

include/ChangeLog:

        * opcode/riscv.h (enum riscv_insn_class): New INSN classes.

opcodes/ChangeLog:

        * riscv-opc.c: Modify INSN_CLASS.

2 files changed, 125 insertions, 0 deletions

diff --git a/gas/testsuite/gas/riscv/fp-zhinx-insns.d b/gas/testsuite/gas/riscv/fp-zhinx-insns.d
new file mode 100644
index 0000000..6e1c40e
--- /dev/null
+++ b/gas/testsuite/gas/riscv/fp-zhinx-insns.d
@@ -0,0 +1,66 @@
+#as: -march=rv64ima_zhinx
+#source: fp-zhinx-insns.s
+#objdump: -dr
+
+.*:[ 	]+file format .*
+
+
+Disassembly of section .text:
+
+0+000 <.text>:
+[ 	]+[0-9a-f]+:[ 	]+24b59553[ 	]+fneg.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+24b5a553[ 	]+fabs.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+24c58553[ 	]+fsgnj.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+24c59553[ 	]+fsgnjn.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+24c5a553[ 	]+fsgnjx.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+04c5f553[ 	]+fadd.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+04c58553[ 	]+fadd.h[ 	]+a0,a1,a2,rne
+[ 	]+[0-9a-f]+:[ 	]+0cc5f553[ 	]+fsub.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+0cc58553[ 	]+fsub.h[ 	]+a0,a1,a2,rne
+[ 	]+[0-9a-f]+:[ 	]+14c5f553[ 	]+fmul.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+14c58553[ 	]+fmul.h[ 	]+a0,a1,a2,rne
+[ 	]+[0-9a-f]+:[ 	]+1cc5f553[ 	]+fdiv.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+1cc58553[ 	]+fdiv.h[ 	]+a0,a1,a2,rne
+[ 	]+[0-9a-f]+:[ 	]+5c05f553[ 	]+fsqrt.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+5c058553[ 	]+fsqrt.h[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+2cc58553[ 	]+fmin.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+2cc59553[ 	]+fmax.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+6cc5f543[ 	]+fmadd.h[ 	]+a0,a1,a2,a3
+[ 	]+[0-9a-f]+:[ 	]+6cc58543[ 	]+fmadd.h[ 	]+a0,a1,a2,a3,rne
+[ 	]+[0-9a-f]+:[ 	]+6cc5f54f[ 	]+fnmadd.h[ 	]+a0,a1,a2,a3
+[ 	]+[0-9a-f]+:[ 	]+6cc5854f[ 	]+fnmadd.h[ 	]+a0,a1,a2,a3,rne
+[ 	]+[0-9a-f]+:[ 	]+6cc5f547[ 	]+fmsub.h[ 	]+a0,a1,a2,a3
+[ 	]+[0-9a-f]+:[ 	]+6cc58547[ 	]+fmsub.h[ 	]+a0,a1,a2,a3,rne
+[ 	]+[0-9a-f]+:[ 	]+6cc5f54b[ 	]+fnmsub.h[ 	]+a0,a1,a2,a3
+[ 	]+[0-9a-f]+:[ 	]+6cc5854b[ 	]+fnmsub.h[ 	]+a0,a1,a2,a3,rne
+[ 	]+[0-9a-f]+:[ 	]+c405f553[ 	]+fcvt.w.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+c4058553[ 	]+fcvt.w.h[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+c415f553[ 	]+fcvt.wu.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+c4158553[ 	]+fcvt.wu.h[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+d405f553[ 	]+fcvt.h.w[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+d4058553[ 	]+fcvt.h.w[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+d415f553[ 	]+fcvt.h.wu[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+d4158553[ 	]+fcvt.h.wu[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+c425f553[ 	]+fcvt.l.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+c4258553[ 	]+fcvt.l.h[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+c435f553[ 	]+fcvt.lu.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+c4358553[ 	]+fcvt.lu.h[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+d425f553[ 	]+fcvt.h.l[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+d4258553[ 	]+fcvt.h.l[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+d435f553[ 	]+fcvt.h.lu[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+d4358553[ 	]+fcvt.h.lu[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+40258553[ 	]+fcvt.s.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+42258553[ 	]+fcvt.d.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+46258553[ 	]+fcvt.q.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+4405f553[ 	]+fcvt.h.s[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+44058553[ 	]+fcvt.h.s[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+4415f553[ 	]+fcvt.h.d[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+44158553[ 	]+fcvt.h.d[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+4435f553[ 	]+fcvt.h.q[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+44358553[ 	]+fcvt.h.q[ 	]+a0,a1,rne
+[ 	]+[0-9a-f]+:[ 	]+e4059553[ 	]+fclass.h[ 	]+a0,a1
+[ 	]+[0-9a-f]+:[ 	]+a4c5a553[ 	]+feq.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+a4c59553[ 	]+flt.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+a4c58553[ 	]+fle.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+a4c59553[ 	]+flt.h[ 	]+a0,a1,a2
+[ 	]+[0-9a-f]+:[ 	]+a4c58553[ 	]+fle.h[ 	]+a0,a1,a2
diff --git a/gas/testsuite/gas/riscv/fp-zhinx-insns.s b/gas/testsuite/gas/riscv/fp-zhinx-insns.s
new file mode 100644
index 0000000..75e2d5a
--- /dev/null
+++ b/gas/testsuite/gas/riscv/fp-zhinx-insns.s
@@ -0,0 +1,59 @@
+	fneg.h		a0, a1
+	fabs.h		a0, a1
+	fsgnj.h		a0, a1, a2
+	fsgnjn.h	a0, a1, a2
+	fsgnjx.h	a0, a1, a2
+	fadd.h		a0, a1, a2
+	fadd.h		a0, a1, a2, rne
+	fsub.h		a0, a1, a2
+	fsub.h		a0, a1, a2, rne
+	fmul.h		a0, a1, a2
+	fmul.h		a0, a1, a2, rne
+	fdiv.h		a0, a1, a2
+	fdiv.h		a0, a1, a2, rne
+	fsqrt.h		a0, a1
+	fsqrt.h		a0, a1, rne
+	fmin.h		a0, a1, a2
+	fmax.h		a0, a1, a2
+	fmadd.h		a0, a1, a2, a3
+	fmadd.h		a0, a1, a2, a3, rne
+	fnmadd.h	a0, a1, a2, a3
+	fnmadd.h	a0, a1, a2, a3, rne
+	fmsub.h		a0, a1, a2, a3
+	fmsub.h		a0, a1, a2, a3, rne
+	fnmsub.h	a0, a1, a2, a3
+	fnmsub.h	a0, a1, a2, a3, rne
+
+	fcvt.w.h	a0, a1
+	fcvt.w.h	a0, a1, rne
+	fcvt.wu.h	a0, a1
+	fcvt.wu.h	a0, a1, rne
+	fcvt.h.w	a0, a1
+	fcvt.h.w	a0, a1, rne
+	fcvt.h.wu	a0, a1
+	fcvt.h.wu	a0, a1, rne
+	fcvt.l.h	a0, a1
+	fcvt.l.h	a0, a1, rne
+	fcvt.lu.h	a0, a1
+	fcvt.lu.h	a0, a1, rne
+	fcvt.h.l	a0, a1
+	fcvt.h.l	a0, a1, rne
+	fcvt.h.lu	a0, a1
+	fcvt.h.lu	a0, a1, rne
+
+	fcvt.s.h	a0, a1
+	fcvt.d.h	a0, a1
+	fcvt.q.h	a0, a1
+	fcvt.h.s	a0, a1
+	fcvt.h.s	a0, a1, rne
+	fcvt.h.d	a0, a1
+	fcvt.h.d	a0, a1, rne
+	fcvt.h.q	a0, a1
+	fcvt.h.q	a0, a1, rne
+	fclass.h	a0, a1
+
+	feq.h		a0, a1, a2
+	flt.h		a0, a1, a2
+	fle.h		a0, a1, a2
+	fgt.h		a0, a2, a1
+	fge.h		a0, a2, a1