Add support for the Q extension to the RISCV ISA.

gas    * config/tc-riscv.c (riscv_set_arch): Whitelist the "q" ISA
        extension.
        (riscv_after_parse_args): Set FLOAT_ABI_QUAD when the Q ISA is
        enabled and no other ABI is specified.

include * opcode/riscv-opc.h: Add support for the "q" ISA extension.

opcodes * riscv-opc.c (riscv-opcodes): Add support for the "q" ISA
        extension.
        * riscv-opcodes/all-opcodes: Likewise.

include/opcode/riscv-opc.h

@@ -285,6 +285,34 @@
 #define MASK_FCVT_D_S  0xfff0007f
 #define MATCH_FSQRT_D 0x5a000053
 #define MASK_FSQRT_D  0xfff0007f
+#define MATCH_FADD_Q 0x6000053
+#define MASK_FADD_Q  0xfe00007f
+#define MATCH_FSUB_Q 0xe000053
+#define MASK_FSUB_Q  0xfe00007f
+#define MATCH_FMUL_Q 0x16000053
+#define MASK_FMUL_Q  0xfe00007f
+#define MATCH_FDIV_Q 0x1e000053
+#define MASK_FDIV_Q  0xfe00007f
+#define MATCH_FSGNJ_Q 0x26000053
+#define MASK_FSGNJ_Q  0xfe00707f
+#define MATCH_FSGNJN_Q 0x26001053
+#define MASK_FSGNJN_Q  0xfe00707f
+#define MATCH_FSGNJX_Q 0x26002053
+#define MASK_FSGNJX_Q  0xfe00707f
+#define MATCH_FMIN_Q 0x2e000053
+#define MASK_FMIN_Q  0xfe00707f
+#define MATCH_FMAX_Q 0x2e001053
+#define MASK_FMAX_Q  0xfe00707f
+#define MATCH_FCVT_S_Q 0x40300053
+#define MASK_FCVT_S_Q  0xfff0007f
+#define MATCH_FCVT_Q_S 0x46000053
+#define MASK_FCVT_Q_S  0xfff0007f
+#define MATCH_FCVT_D_Q 0x42300053
+#define MASK_FCVT_D_Q  0xfff0007f
+#define MATCH_FCVT_Q_D 0x46100053
+#define MASK_FCVT_Q_D  0xfff0007f
+#define MATCH_FSQRT_Q 0x5e000053
+#define MASK_FSQRT_Q  0xfff0007f
 #define MATCH_FLE_S 0xa0000053
 #define MASK_FLE_S  0xfe00707f
 #define MATCH_FLT_S 0xa0001053
@@ -297,6 +325,12 @@
 #define MASK_FLT_D  0xfe00707f
 #define MATCH_FEQ_D 0xa2002053
 #define MASK_FEQ_D  0xfe00707f
+#define MATCH_FLE_Q 0xa6000053
+#define MASK_FLE_Q  0xfe00707f
+#define MATCH_FLT_Q 0xa6001053
+#define MASK_FLT_Q  0xfe00707f
+#define MATCH_FEQ_Q 0xa6002053
+#define MASK_FEQ_Q  0xfe00707f
 #define MATCH_FCVT_W_S 0xc0000053
 #define MASK_FCVT_W_S  0xfff0007f
 #define MATCH_FCVT_WU_S 0xc0100053
@@ -321,6 +355,18 @@
 #define MASK_FMV_X_D  0xfff0707f
 #define MATCH_FCLASS_D 0xe2001053
 #define MASK_FCLASS_D  0xfff0707f
+#define MATCH_FCVT_W_Q 0xc6000053
+#define MASK_FCVT_W_Q  0xfff0007f
+#define MATCH_FCVT_WU_Q 0xc6100053
+#define MASK_FCVT_WU_Q  0xfff0007f
+#define MATCH_FCVT_L_Q 0xc6200053
+#define MASK_FCVT_L_Q  0xfff0007f
+#define MATCH_FCVT_LU_Q 0xc6300053
+#define MASK_FCVT_LU_Q  0xfff0007f
+#define MATCH_FMV_X_Q 0xe6000053
+#define MASK_FMV_X_Q  0xfff0707f
+#define MATCH_FCLASS_Q 0xe6001053
+#define MASK_FCLASS_Q  0xfff0707f
 #define MATCH_FCVT_S_W 0xd0000053
 #define MASK_FCVT_S_W  0xfff0007f
 #define MATCH_FCVT_S_WU 0xd0100053
@@ -341,14 +387,28 @@
 #define MASK_FCVT_D_LU  0xfff0007f
 #define MATCH_FMV_D_X 0xf2000053
 #define MASK_FMV_D_X  0xfff0707f
+#define MATCH_FCVT_Q_W 0xd6000053
+#define MASK_FCVT_Q_W  0xfff0007f
+#define MATCH_FCVT_Q_WU 0xd6100053
+#define MASK_FCVT_Q_WU  0xfff0007f
+#define MATCH_FCVT_Q_L 0xd6200053
+#define MASK_FCVT_Q_L  0xfff0007f
+#define MATCH_FCVT_Q_LU 0xd6300053
+#define MASK_FCVT_Q_LU  0xfff0007f
+#define MATCH_FMV_Q_X 0xf6000053
+#define MASK_FMV_Q_X  0xfff0707f
 #define MATCH_FLW 0x2007
 #define MASK_FLW  0x707f
 #define MATCH_FLD 0x3007
 #define MASK_FLD  0x707f
+#define MATCH_FLQ 0x4007
+#define MASK_FLQ  0x707f
 #define MATCH_FSW 0x2027
 #define MASK_FSW  0x707f
 #define MATCH_FSD 0x3027
 #define MASK_FSD  0x707f
+#define MATCH_FSQ 0x4027
+#define MASK_FSQ  0x707f
 #define MATCH_FMADD_S 0x43
 #define MASK_FMADD_S  0x600007f
 #define MATCH_FMSUB_S 0x47
@@ -365,6 +425,14 @@
 #define MASK_FNMSUB_D  0x600007f
 #define MATCH_FNMADD_D 0x200004f
 #define MASK_FNMADD_D  0x600007f
+#define MATCH_FMADD_Q 0x6000043
+#define MASK_FMADD_Q  0x600007f
+#define MATCH_FMSUB_Q 0x6000047
+#define MASK_FMSUB_Q  0x600007f
+#define MATCH_FNMSUB_Q 0x600004b
+#define MASK_FNMSUB_Q  0x600007f
+#define MATCH_FNMADD_Q 0x600004f
+#define MASK_FNMADD_Q  0x600007f
 #define MATCH_C_ADDI4SPN 0x0
 #define MASK_C_ADDI4SPN  0xe003
 #define MATCH_C_FLD 0x2000
@@ -844,12 +912,29 @@ DECLARE_INSN(fmax_d, MATCH_FMAX_D, MASK_FMAX_D)
 DECLARE_INSN(fcvt_s_d, MATCH_FCVT_S_D, MASK_FCVT_S_D)
 DECLARE_INSN(fcvt_d_s, MATCH_FCVT_D_S, MASK_FCVT_D_S)
 DECLARE_INSN(fsqrt_d, MATCH_FSQRT_D, MASK_FSQRT_D)
+DECLARE_INSN(fadd_q, MATCH_FADD_Q, MASK_FADD_Q)
+DECLARE_INSN(fsub_q, MATCH_FSUB_Q, MASK_FSUB_Q)
+DECLARE_INSN(fmul_q, MATCH_FMUL_Q, MASK_FMUL_Q)
+DECLARE_INSN(fdiv_q, MATCH_FDIV_Q, MASK_FDIV_Q)
+DECLARE_INSN(fsgnj_q, MATCH_FSGNJ_Q, MASK_FSGNJ_Q)
+DECLARE_INSN(fsgnjn_q, MATCH_FSGNJN_Q, MASK_FSGNJN_Q)
+DECLARE_INSN(fsgnjx_q, MATCH_FSGNJX_Q, MASK_FSGNJX_Q)
+DECLARE_INSN(fmin_q, MATCH_FMIN_Q, MASK_FMIN_Q)
+DECLARE_INSN(fmax_q, MATCH_FMAX_Q, MASK_FMAX_Q)
+DECLARE_INSN(fcvt_s_q, MATCH_FCVT_S_Q, MASK_FCVT_S_Q)
+DECLARE_INSN(fcvt_q_s, MATCH_FCVT_Q_S, MASK_FCVT_Q_S)
+DECLARE_INSN(fcvt_d_q, MATCH_FCVT_D_Q, MASK_FCVT_D_Q)
+DECLARE_INSN(fcvt_q_d, MATCH_FCVT_Q_D, MASK_FCVT_Q_D)
+DECLARE_INSN(fsqrt_q, MATCH_FSQRT_Q, MASK_FSQRT_Q)
 DECLARE_INSN(fle_s, MATCH_FLE_S, MASK_FLE_S)
 DECLARE_INSN(flt_s, MATCH_FLT_S, MASK_FLT_S)
 DECLARE_INSN(feq_s, MATCH_FEQ_S, MASK_FEQ_S)
 DECLARE_INSN(fle_d, MATCH_FLE_D, MASK_FLE_D)
 DECLARE_INSN(flt_d, MATCH_FLT_D, MASK_FLT_D)
 DECLARE_INSN(feq_d, MATCH_FEQ_D, MASK_FEQ_D)
+DECLARE_INSN(fle_q, MATCH_FLE_Q, MASK_FLE_Q)
+DECLARE_INSN(flt_q, MATCH_FLT_Q, MASK_FLT_Q)
+DECLARE_INSN(feq_q, MATCH_FEQ_Q, MASK_FEQ_Q)
 DECLARE_INSN(fcvt_w_s, MATCH_FCVT_W_S, MASK_FCVT_W_S)
 DECLARE_INSN(fcvt_wu_s, MATCH_FCVT_WU_S, MASK_FCVT_WU_S)
 DECLARE_INSN(fcvt_l_s, MATCH_FCVT_L_S, MASK_FCVT_L_S)
@@ -862,6 +947,12 @@ DECLARE_INSN(fcvt_l_d, MATCH_FCVT_L_D, MASK_FCVT_L_D)
 DECLARE_INSN(fcvt_lu_d, MATCH_FCVT_LU_D, MASK_FCVT_LU_D)
 DECLARE_INSN(fmv_x_d, MATCH_FMV_X_D, MASK_FMV_X_D)
 DECLARE_INSN(fclass_d, MATCH_FCLASS_D, MASK_FCLASS_D)
+DECLARE_INSN(fcvt_w_q, MATCH_FCVT_W_Q, MASK_FCVT_W_Q)
+DECLARE_INSN(fcvt_wu_q, MATCH_FCVT_WU_Q, MASK_FCVT_WU_Q)
+DECLARE_INSN(fcvt_l_q, MATCH_FCVT_L_Q, MASK_FCVT_L_Q)
+DECLARE_INSN(fcvt_lu_q, MATCH_FCVT_LU_Q, MASK_FCVT_LU_Q)
+DECLARE_INSN(fmv_x_q, MATCH_FMV_X_Q, MASK_FMV_X_Q)
+DECLARE_INSN(fclass_q, MATCH_FCLASS_Q, MASK_FCLASS_Q)
 DECLARE_INSN(fcvt_s_w, MATCH_FCVT_S_W, MASK_FCVT_S_W)
 DECLARE_INSN(fcvt_s_wu, MATCH_FCVT_S_WU, MASK_FCVT_S_WU)
 DECLARE_INSN(fcvt_s_l, MATCH_FCVT_S_L, MASK_FCVT_S_L)
@@ -872,10 +963,17 @@ DECLARE_INSN(fcvt_d_wu, MATCH_FCVT_D_WU, MASK_FCVT_D_WU)
 DECLARE_INSN(fcvt_d_l, MATCH_FCVT_D_L, MASK_FCVT_D_L)
 DECLARE_INSN(fcvt_d_lu, MATCH_FCVT_D_LU, MASK_FCVT_D_LU)
 DECLARE_INSN(fmv_d_x, MATCH_FMV_D_X, MASK_FMV_D_X)
+DECLARE_INSN(fcvt_q_w, MATCH_FCVT_Q_W, MASK_FCVT_Q_W)
+DECLARE_INSN(fcvt_q_wu, MATCH_FCVT_Q_WU, MASK_FCVT_Q_WU)
+DECLARE_INSN(fcvt_q_l, MATCH_FCVT_Q_L, MASK_FCVT_Q_L)
+DECLARE_INSN(fcvt_q_lu, MATCH_FCVT_Q_LU, MASK_FCVT_Q_LU)
+DECLARE_INSN(fmv_q_x, MATCH_FMV_Q_X, MASK_FMV_Q_X)
 DECLARE_INSN(flw, MATCH_FLW, MASK_FLW)
 DECLARE_INSN(fld, MATCH_FLD, MASK_FLD)
+DECLARE_INSN(flq, MATCH_FLQ, MASK_FLQ)
 DECLARE_INSN(fsw, MATCH_FSW, MASK_FSW)
 DECLARE_INSN(fsd, MATCH_FSD, MASK_FSD)
+DECLARE_INSN(fsq, MATCH_FSQ, MASK_FSQ)
 DECLARE_INSN(fmadd_s, MATCH_FMADD_S, MASK_FMADD_S)
 DECLARE_INSN(fmsub_s, MATCH_FMSUB_S, MASK_FMSUB_S)
 DECLARE_INSN(fnmsub_s, MATCH_FNMSUB_S, MASK_FNMSUB_S)
@@ -884,6 +982,10 @@ DECLARE_INSN(fmadd_d, MATCH_FMADD_D, MASK_FMADD_D)
 DECLARE_INSN(fmsub_d, MATCH_FMSUB_D, MASK_FMSUB_D)
 DECLARE_INSN(fnmsub_d, MATCH_FNMSUB_D, MASK_FNMSUB_D)
 DECLARE_INSN(fnmadd_d, MATCH_FNMADD_D, MASK_FNMADD_D)
+DECLARE_INSN(fmadd_q, MATCH_FMADD_Q, MASK_FMADD_Q)
+DECLARE_INSN(fmsub_q, MATCH_FMSUB_Q, MASK_FMSUB_Q)
+DECLARE_INSN(fnmsub_q, MATCH_FNMSUB_Q, MASK_FNMSUB_Q)
+DECLARE_INSN(fnmadd_q, MATCH_FNMADD_Q, MASK_FNMADD_Q)
 DECLARE_INSN(c_addi4spn, MATCH_C_ADDI4SPN, MASK_C_ADDI4SPN)
 DECLARE_INSN(c_fld, MATCH_C_FLD, MASK_C_FLD)
 DECLARE_INSN(c_lw, MATCH_C_LW, MASK_C_LW)

include/opcode/riscv.h

@@ -323,8 +323,10 @@ enum
   M_SD,
   M_FLW,
   M_FLD,
+  M_FLQ,
   M_FSW,
   M_FSD,
+  M_FSQ,
   M_CALL,
   M_J,
   M_LI,