RISC-V: Added half-precision floating-point v1.0 instructions.

bfd/
	* elfxx-riscv.c (riscv_implicit_subsets): Added implicit f
	and zicsr for zfh.
	(riscv_supported_std_z_ext): Added default v1.0 version for zfh.
	(riscv_multi_subset_supports): Handle INSN_CLASS_ZFH,
	INSN_CLASS_D_AND_ZFH and INSN_CLASS_Q_AND_ZFH.
gas/
	* config/tc-riscv.c (FLT_CHARS): Added "hH".
	(macro): Expand Pseudo M_FLH and M_FSH.
	(riscv_pseudo_table): Added .float16 directive.
	* testsuite/gas/riscv/float16-be.d: New testcase for .float16.
	* testsuite/gas/riscv/float16-le.d: Likewise.
	* testsuite/gas/riscv/float16.s: Likewise.
	* testsuite/gas/riscv/fp-zfh-insns.d: New testcase for zfh.
	* testsuite/gas/riscv/fp-zfh-insns.s: Likewise.
include/
	* opcode/riscv-opc.h: Added MASK and MATCH encodings for zfh.
	* opcode/riscv.h: Added INSN_CLASS and pseudo macros for zfh.
opcodes/
	* riscv-opc.c (riscv_opcodes): Added zfh instructions.

1 files changed, 65 insertions, 0 deletions

diff --git a/opcodes/riscv-opc.c b/opcodes/riscv-opc.c
index 00108ff..7524be7 100644
--- a/opcodes/riscv-opc.c
+++ b/opcodes/riscv-opc.c
@@ -572,6 +572,71 @@ const struct riscv_opcode riscv_opcodes[] =
 {"remw",      64, INSN_CLASS_M,   "d,s,t",     MATCH_REMW, MASK_REMW, match_opcode, 0 },
 {"remuw",     64, INSN_CLASS_M,   "d,s,t",     MATCH_REMUW, MASK_REMUW, match_opcode, 0 },
 
+/* Half-precision floating-point instruction subset.  */
+{"flh",        0, INSN_CLASS_ZFH,  "D,o(s)",    MATCH_FLH, MASK_FLH, match_opcode, INSN_DREF|INSN_2_BYTE },
+{"flh",        0, INSN_CLASS_ZFH,  "D,A,s",     0, (int) M_FLH, match_never, INSN_MACRO },
+{"fsh",        0, INSN_CLASS_ZFH,  "T,q(s)",    MATCH_FSH, MASK_FSH, match_opcode, INSN_DREF|INSN_2_BYTE },
+{"fsh",        0, INSN_CLASS_ZFH,  "T,A,s",     0, (int) M_FSH, match_never, INSN_MACRO },
+{"fmv.h",      0, INSN_CLASS_ZFH,  "D,U",       MATCH_FSGNJ_H, MASK_FSGNJ_H, match_rs1_eq_rs2, INSN_ALIAS },
+{"fneg.h",     0, INSN_CLASS_ZFH,  "D,U",       MATCH_FSGNJN_H, MASK_FSGNJN_H, match_rs1_eq_rs2, INSN_ALIAS },
+{"fabs.h",     0, INSN_CLASS_ZFH,  "D,U",       MATCH_FSGNJX_H, MASK_FSGNJX_H, match_rs1_eq_rs2, INSN_ALIAS },
+{"fsgnj.h",    0, INSN_CLASS_ZFH,  "D,S,T",     MATCH_FSGNJ_H, MASK_FSGNJ_H, match_opcode, 0 },
+{"fsgnjn.h",   0, INSN_CLASS_ZFH,  "D,S,T",     MATCH_FSGNJN_H, MASK_FSGNJN_H, match_opcode, 0 },
+{"fsgnjx.h",   0, INSN_CLASS_ZFH,  "D,S,T",     MATCH_FSGNJX_H, MASK_FSGNJX_H, match_opcode, 0 },
+{"fadd.h",     0, INSN_CLASS_ZFH,  "D,S,T",     MATCH_FADD_H|MASK_RM, MASK_FADD_H|MASK_RM, match_opcode, 0 },
+{"fadd.h",     0, INSN_CLASS_ZFH,  "D,S,T,m",   MATCH_FADD_H, MASK_FADD_H, match_opcode, 0 },
+{"fsub.h",     0, INSN_CLASS_ZFH,  "D,S,T",     MATCH_FSUB_H|MASK_RM, MASK_FSUB_H|MASK_RM, match_opcode, 0 },
+{"fsub.h",     0, INSN_CLASS_ZFH,  "D,S,T,m",   MATCH_FSUB_H, MASK_FSUB_H, match_opcode, 0 },
+{"fmul.h",     0, INSN_CLASS_ZFH,  "D,S,T",     MATCH_FMUL_H|MASK_RM, MASK_FMUL_H|MASK_RM, match_opcode, 0 },
+{"fmul.h",     0, INSN_CLASS_ZFH,  "D,S,T,m",   MATCH_FMUL_H, MASK_FMUL_H, match_opcode, 0 },
+{"fdiv.h",     0, INSN_CLASS_ZFH,  "D,S,T",     MATCH_FDIV_H|MASK_RM, MASK_FDIV_H|MASK_RM, match_opcode, 0 },
+{"fdiv.h",     0, INSN_CLASS_ZFH,  "D,S,T,m",   MATCH_FDIV_H, MASK_FDIV_H, match_opcode, 0 },
+{"fsqrt.h",    0, INSN_CLASS_ZFH,  "D,S",       MATCH_FSQRT_H|MASK_RM, MASK_FSQRT_H|MASK_RM, match_opcode, 0 },
+{"fsqrt.h",    0, INSN_CLASS_ZFH,  "D,S,m",     MATCH_FSQRT_H, MASK_FSQRT_H, match_opcode, 0 },
+{"fmin.h",     0, INSN_CLASS_ZFH,  "D,S,T",     MATCH_FMIN_H, MASK_FMIN_H, match_opcode, 0 },
+{"fmax.h",     0, INSN_CLASS_ZFH,  "D,S,T",     MATCH_FMAX_H, MASK_FMAX_H, match_opcode, 0 },
+{"fmadd.h",    0, INSN_CLASS_ZFH,  "D,S,T,R",   MATCH_FMADD_H|MASK_RM, MASK_FMADD_H|MASK_RM, match_opcode, 0 },
+{"fmadd.h",    0, INSN_CLASS_ZFH,  "D,S,T,R,m", MATCH_FMADD_H, MASK_FMADD_H, match_opcode, 0 },
+{"fnmadd.h",   0, INSN_CLASS_ZFH,  "D,S,T,R",   MATCH_FNMADD_H|MASK_RM, MASK_FNMADD_H|MASK_RM, match_opcode, 0 },
+{"fnmadd.h",   0, INSN_CLASS_ZFH,  "D,S,T,R,m", MATCH_FNMADD_H, MASK_FNMADD_H, match_opcode, 0 },
+{"fmsub.h",    0, INSN_CLASS_ZFH,  "D,S,T,R",   MATCH_FMSUB_H|MASK_RM, MASK_FMSUB_H|MASK_RM, match_opcode, 0 },
+{"fmsub.h",    0, INSN_CLASS_ZFH,  "D,S,T,R,m", MATCH_FMSUB_H, MASK_FMSUB_H, match_opcode, 0 },
+{"fnmsub.h",   0, INSN_CLASS_ZFH,  "D,S,T,R",   MATCH_FNMSUB_H|MASK_RM, MASK_FNMSUB_H|MASK_RM, match_opcode, 0 },
+{"fnmsub.h",   0, INSN_CLASS_ZFH,  "D,S,T,R,m", MATCH_FNMSUB_H, MASK_FNMSUB_H, match_opcode, 0 },
+{"fcvt.w.h",   0, INSN_CLASS_ZFH,  "d,S",       MATCH_FCVT_W_H|MASK_RM, MASK_FCVT_W_H|MASK_RM, match_opcode, 0 },
+{"fcvt.w.h",   0, INSN_CLASS_ZFH,  "d,S,m",     MATCH_FCVT_W_H, MASK_FCVT_W_H, match_opcode, 0 },
+{"fcvt.wu.h",  0, INSN_CLASS_ZFH,  "d,S",       MATCH_FCVT_WU_H|MASK_RM, MASK_FCVT_WU_H|MASK_RM, match_opcode, 0 },
+{"fcvt.wu.h",  0, INSN_CLASS_ZFH,  "d,S,m",     MATCH_FCVT_WU_H, MASK_FCVT_WU_H, match_opcode, 0 },
+{"fcvt.h.w",   0, INSN_CLASS_ZFH,  "D,s",       MATCH_FCVT_H_W|MASK_RM, MASK_FCVT_H_W|MASK_RM, match_opcode, 0 },
+{"fcvt.h.w",   0, INSN_CLASS_ZFH,  "D,s,m",     MATCH_FCVT_H_W, MASK_FCVT_H_W, match_opcode, 0 },
+{"fcvt.h.wu",  0, INSN_CLASS_ZFH,  "D,s",       MATCH_FCVT_H_WU|MASK_RM, MASK_FCVT_H_WU|MASK_RM, match_opcode, 0 },
+{"fcvt.h.wu",  0, INSN_CLASS_ZFH,  "D,s,m",     MATCH_FCVT_H_WU, MASK_FCVT_H_WU, match_opcode, 0 },
+{"fcvt.s.h",   0, INSN_CLASS_ZFH,  "D,S",       MATCH_FCVT_S_H, MASK_FCVT_S_H|MASK_RM, match_opcode, 0 },
+{"fcvt.d.h",   0, INSN_CLASS_D_AND_ZFH,  "D,S",       MATCH_FCVT_D_H, MASK_FCVT_D_H|MASK_RM, match_opcode, 0 },
+{"fcvt.q.h",   0, INSN_CLASS_Q_AND_ZFH,  "D,S",       MATCH_FCVT_Q_H, MASK_FCVT_Q_H|MASK_RM, match_opcode, 0 },
+{"fcvt.h.s",   0, INSN_CLASS_ZFH,  "D,S",       MATCH_FCVT_H_S|MASK_RM, MASK_FCVT_H_S|MASK_RM, match_opcode, 0 },
+{"fcvt.h.s",   0, INSN_CLASS_ZFH,  "D,S,m",     MATCH_FCVT_H_S, MASK_FCVT_H_S, match_opcode, 0 },
+{"fcvt.h.d",   0, INSN_CLASS_D_AND_ZFH,  "D,S",       MATCH_FCVT_H_D|MASK_RM, MASK_FCVT_H_D|MASK_RM, match_opcode, 0 },
+{"fcvt.h.d",   0, INSN_CLASS_D_AND_ZFH,  "D,S,m",     MATCH_FCVT_H_D, MASK_FCVT_H_D, match_opcode, 0 },
+{"fcvt.h.q",   0, INSN_CLASS_Q_AND_ZFH,  "D,S",       MATCH_FCVT_H_Q|MASK_RM, MASK_FCVT_H_Q|MASK_RM, match_opcode, 0 },
+{"fcvt.h.q",   0, INSN_CLASS_Q_AND_ZFH,  "D,S,m",     MATCH_FCVT_H_Q, MASK_FCVT_H_Q, match_opcode, 0 },
+{"fclass.h",   0, INSN_CLASS_ZFH,  "d,S",       MATCH_FCLASS_H, MASK_FCLASS_H, match_opcode, 0 },
+{"feq.h",      0, INSN_CLASS_ZFH,  "d,S,T",     MATCH_FEQ_H, MASK_FEQ_H, match_opcode, 0 },
+{"flt.h",      0, INSN_CLASS_ZFH,  "d,S,T",     MATCH_FLT_H, MASK_FLT_H, match_opcode, 0 },
+{"fle.h",      0, INSN_CLASS_ZFH,  "d,S,T",     MATCH_FLE_H, MASK_FLE_H, match_opcode, 0 },
+{"fgt.h",      0, INSN_CLASS_ZFH,  "d,T,S",     MATCH_FLT_H, MASK_FLT_H, match_opcode, 0 },
+{"fge.h",      0, INSN_CLASS_ZFH,  "d,T,S",     MATCH_FLE_H, MASK_FLE_H, match_opcode, 0 },
+{"fmv.x.h",    0, INSN_CLASS_ZFH,  "d,S",       MATCH_FMV_X_H, MASK_FMV_X_H, match_opcode, 0 },
+{"fmv.h.x",    0, INSN_CLASS_ZFH,  "D,s",       MATCH_FMV_H_X, MASK_FMV_H_X, match_opcode, 0 },
+{"fcvt.l.h",  64, INSN_CLASS_ZFH,  "d,S",       MATCH_FCVT_L_H|MASK_RM, MASK_FCVT_L_H|MASK_RM, match_opcode, 0 },
+{"fcvt.l.h",  64, INSN_CLASS_ZFH,  "d,S,m",     MATCH_FCVT_L_H, MASK_FCVT_L_H, match_opcode, 0 },
+{"fcvt.lu.h", 64, INSN_CLASS_ZFH,  "d,S",       MATCH_FCVT_LU_H|MASK_RM, MASK_FCVT_LU_H|MASK_RM, match_opcode, 0 },
+{"fcvt.lu.h", 64, INSN_CLASS_ZFH,  "d,S,m",     MATCH_FCVT_LU_H, MASK_FCVT_LU_H, match_opcode, 0 },
+{"fcvt.h.l",  64, INSN_CLASS_ZFH,  "D,s",       MATCH_FCVT_H_L|MASK_RM, MASK_FCVT_H_L|MASK_RM, match_opcode, 0 },
+{"fcvt.h.l",  64, INSN_CLASS_ZFH,  "D,s,m",     MATCH_FCVT_H_L, MASK_FCVT_H_L, match_opcode, 0 },
+{"fcvt.h.lu", 64, INSN_CLASS_ZFH,  "D,s",       MATCH_FCVT_H_LU|MASK_RM, MASK_FCVT_H_L|MASK_RM, match_opcode, 0 },
+{"fcvt.h.lu", 64, INSN_CLASS_ZFH,  "D,s,m",     MATCH_FCVT_H_LU, MASK_FCVT_H_LU, match_opcode, 0 },
+
 /* Single-precision floating-point instruction subset.  */
 {"frcsr",      0, INSN_CLASS_F,   "d",         MATCH_FRCSR, MASK_FRCSR, match_opcode, INSN_ALIAS },
 {"frsr",       0, INSN_CLASS_F,   "d",         MATCH_FRCSR, MASK_FRCSR, match_opcode, INSN_ALIAS },