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X-Received-From: 2607:f8b0:4864:20::541 Subject: [Qemu-devel] [PATCH v7 12/35] target/riscv: Convert RV32F insns to decodetree X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Bastian Koppelmann , Peer Adelt , qemu-devel@nongnu.org Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Bastian Koppelmann Acked-by: Alistair Francis Reviewed-by: Richard Henderson Signed-off-by: Bastian Koppelmann Signed-off-by: Peer Adelt --- target/riscv/insn32.decode | 35 +++ target/riscv/insn_trans/trans_rvf.inc.c | 353 ++++++++++++++++++++++++ target/riscv/translate.c | 1 + 3 files changed, 389 insertions(+) create mode 100644 target/riscv/insn_trans/trans_rvf.inc.c diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode index 00b9e2d9a508..e40836bf032f 100644 --- a/target/riscv/insn32.decode +++ b/target/riscv/insn32.decode @@ -17,12 +17,14 @@ # this program. If not, see . # Fields: +%rs3 27:5 %rs2 20:5 %rs1 15:5 %rd 7:5 %sh10 20:10 %csr 20:12 +%rm 12:3 # immediates: %imm_i 20:s12 @@ -50,6 +52,11 @@ @atom_ld ..... aq:1 rl:1 ..... ........ ..... ....... &atomic rs2=0 %rs1 %rd @atom_st ..... aq:1 rl:1 ..... ........ ..... ....... &atomic %rs2 %rs1 %rd +@r4_rm ..... .. ..... ..... ... ..... ....... %rs3 %rs2 %rs1 %rm %rd +@r_rm ....... ..... ..... ... ..... ....... %rs2 %rs1 %rm %rd +@r2_rm ....... ..... ..... ... ..... ....... %rs1 %rm %rd +@r2 ....... ..... ..... ... ..... ....... %rs1 %rd + # *** RV32I Base Instruction Set *** lui .................... ..... 0110111 @u auipc .................... ..... 0010111 @u @@ -119,3 +126,31 @@ amomin_w 10000 . . ..... ..... 010 ..... 0101111 @atom_st amomax_w 10100 . . ..... ..... 010 ..... 0101111 @atom_st amominu_w 11000 . . ..... ..... 010 ..... 0101111 @atom_st amomaxu_w 11100 . . ..... ..... 010 ..... 0101111 @atom_st + +# *** RV32F Standard Extension *** +flw ............ ..... 010 ..... 0000111 @i +fsw ....... ..... ..... 010 ..... 0100111 @s +fmadd_s ..... 00 ..... ..... ... ..... 1000011 @r4_rm +fmsub_s ..... 00 ..... ..... ... ..... 1000111 @r4_rm +fnmsub_s ..... 00 ..... ..... ... ..... 1001011 @r4_rm +fnmadd_s ..... 00 ..... ..... ... ..... 1001111 @r4_rm +fadd_s 0000000 ..... ..... ... ..... 1010011 @r_rm +fsub_s 0000100 ..... ..... ... ..... 1010011 @r_rm +fmul_s 0001000 ..... ..... ... ..... 1010011 @r_rm +fdiv_s 0001100 ..... ..... ... ..... 1010011 @r_rm +fsqrt_s 0101100 00000 ..... ... ..... 1010011 @r2_rm +fsgnj_s 0010000 ..... ..... 000 ..... 1010011 @r +fsgnjn_s 0010000 ..... ..... 001 ..... 1010011 @r +fsgnjx_s 0010000 ..... ..... 010 ..... 1010011 @r +fmin_s 0010100 ..... ..... 000 ..... 1010011 @r +fmax_s 0010100 ..... ..... 001 ..... 1010011 @r +fcvt_w_s 1100000 00000 ..... ... ..... 1010011 @r2_rm +fcvt_wu_s 1100000 00001 ..... ... ..... 1010011 @r2_rm +fmv_x_w 1110000 00000 ..... 000 ..... 1010011 @r2 +feq_s 1010000 ..... ..... 010 ..... 1010011 @r +flt_s 1010000 ..... ..... 001 ..... 1010011 @r +fle_s 1010000 ..... ..... 000 ..... 1010011 @r +fclass_s 1110000 00000 ..... 001 ..... 1010011 @r2 +fcvt_s_w 1101000 00000 ..... ... ..... 1010011 @r2_rm +fcvt_s_wu 1101000 00001 ..... ... ..... 1010011 @r2_rm +fmv_w_x 1111000 00000 ..... 000 ..... 1010011 @r2 diff --git a/target/riscv/insn_trans/trans_rvf.inc.c b/target/riscv/insn_trans/trans_rvf.inc.c new file mode 100644 index 000000000000..bce4da0e79e9 --- /dev/null +++ b/target/riscv/insn_trans/trans_rvf.inc.c @@ -0,0 +1,353 @@ +/* + * RISC-V translation routines for the RV64F Standard Extension. + * + * Copyright (c) 2016-2017 Sagar Karandikar, sagark@eecs.berkeley.edu + * Copyright (c) 2018 Peer Adelt, peer.adelt@hni.uni-paderborn.de + * Bastian Koppelmann, kbastian@mail.uni-paderborn.de + * + * This program is free software; you can redistribute it and/or modify it + * under the terms and conditions of the GNU General Public License, + * version 2 or later, as published by the Free Software Foundation. + * + * This program is distributed in the hope it will be useful, but WITHOUT + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for + * more details. + * + * You should have received a copy of the GNU General Public License along with + * this program. If not, see . + */ + +#define REQUIRE_FPU do {\ + if (!(ctx->flags & TB_FLAGS_FP_ENABLE)) \ + return false; \ +} while (0) + +static bool trans_flw(DisasContext *ctx, arg_flw *a) +{ + TCGv t0 = tcg_temp_new(); + gen_get_gpr(t0, a->rs1); + REQUIRE_FPU; + tcg_gen_addi_tl(t0, t0, a->imm); + + tcg_gen_qemu_ld_i64(cpu_fpr[a->rd], t0, ctx->mem_idx, MO_TEUL); + /* RISC-V requires NaN-boxing of narrower width floating point values */ + tcg_gen_ori_i64(cpu_fpr[a->rd], cpu_fpr[a->rd], 0xffffffff00000000ULL); + + tcg_temp_free(t0); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fsw(DisasContext *ctx, arg_fsw *a) +{ + TCGv t0 = tcg_temp_new(); + gen_get_gpr(t0, a->rs1); + + REQUIRE_FPU; + tcg_gen_addi_tl(t0, t0, a->imm); + + tcg_gen_qemu_st_i64(cpu_fpr[a->rs2], t0, ctx->mem_idx, MO_TEUL); + + tcg_temp_free(t0); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fmadd_s(DisasContext *ctx, arg_fmadd_s *a) +{ + REQUIRE_FPU; + gen_set_rm(ctx, a->rm); + gen_helper_fmadd_s(cpu_fpr[a->rd], cpu_env, cpu_fpr[a->rs1], + cpu_fpr[a->rs2], cpu_fpr[a->rs3]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fmsub_s(DisasContext *ctx, arg_fmsub_s *a) +{ + REQUIRE_FPU; + gen_set_rm(ctx, a->rm); + gen_helper_fmsub_s(cpu_fpr[a->rd], cpu_env, cpu_fpr[a->rs1], + cpu_fpr[a->rs2], cpu_fpr[a->rs3]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fnmsub_s(DisasContext *ctx, arg_fnmsub_s *a) +{ + REQUIRE_FPU; + gen_set_rm(ctx, a->rm); + gen_helper_fnmsub_s(cpu_fpr[a->rd], cpu_env, cpu_fpr[a->rs1], + cpu_fpr[a->rs2], cpu_fpr[a->rs3]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fnmadd_s(DisasContext *ctx, arg_fnmadd_s *a) +{ + REQUIRE_FPU; + gen_set_rm(ctx, a->rm); + gen_helper_fnmadd_s(cpu_fpr[a->rd], cpu_env, cpu_fpr[a->rs1], + cpu_fpr[a->rs2], cpu_fpr[a->rs3]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fadd_s(DisasContext *ctx, arg_fadd_s *a) +{ + REQUIRE_FPU; + + gen_set_rm(ctx, a->rm); + gen_helper_fadd_s(cpu_fpr[a->rd], cpu_env, + cpu_fpr[a->rs1], cpu_fpr[a->rs2]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fsub_s(DisasContext *ctx, arg_fsub_s *a) +{ + REQUIRE_FPU; + + gen_set_rm(ctx, a->rm); + gen_helper_fsub_s(cpu_fpr[a->rd], cpu_env, + cpu_fpr[a->rs1], cpu_fpr[a->rs2]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fmul_s(DisasContext *ctx, arg_fmul_s *a) +{ + REQUIRE_FPU; + + gen_set_rm(ctx, a->rm); + gen_helper_fmul_s(cpu_fpr[a->rd], cpu_env, + cpu_fpr[a->rs1], cpu_fpr[a->rs2]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fdiv_s(DisasContext *ctx, arg_fdiv_s *a) +{ + REQUIRE_FPU; + + gen_set_rm(ctx, a->rm); + gen_helper_fdiv_s(cpu_fpr[a->rd], cpu_env, + cpu_fpr[a->rs1], cpu_fpr[a->rs2]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fsqrt_s(DisasContext *ctx, arg_fsqrt_s *a) +{ + REQUIRE_FPU; + + gen_set_rm(ctx, a->rm); + gen_helper_fsqrt_s(cpu_fpr[a->rd], cpu_env, cpu_fpr[a->rs1]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fsgnj_s(DisasContext *ctx, arg_fsgnj_s *a) +{ + REQUIRE_FPU; + if (a->rs1 == a->rs2) { /* FMOV */ + tcg_gen_mov_i64(cpu_fpr[a->rd], cpu_fpr[a->rs1]); + } else { /* FSGNJ */ + tcg_gen_deposit_i64(cpu_fpr[a->rd], cpu_fpr[a->rs2], cpu_fpr[a->rs1], + 0, 31); + } + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fsgnjn_s(DisasContext *ctx, arg_fsgnjn_s *a) +{ + REQUIRE_FPU; + if (a->rs1 == a->rs2) { /* FNEG */ + tcg_gen_xori_i64(cpu_fpr[a->rd], cpu_fpr[a->rs1], INT32_MIN); + } else { + TCGv_i64 t0 = tcg_temp_new_i64(); + tcg_gen_not_i64(t0, cpu_fpr[a->rs2]); + tcg_gen_deposit_i64(cpu_fpr[a->rd], t0, cpu_fpr[a->rs1], 0, 31); + tcg_temp_free_i64(t0); + } + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fsgnjx_s(DisasContext *ctx, arg_fsgnjx_s *a) +{ + REQUIRE_FPU; + if (a->rs1 == a->rs2) { /* FABS */ + tcg_gen_andi_i64(cpu_fpr[a->rd], cpu_fpr[a->rs1], ~INT32_MIN); + } else { + TCGv_i64 t0 = tcg_temp_new_i64(); + tcg_gen_andi_i64(t0, cpu_fpr[a->rs2], INT32_MIN); + tcg_gen_xor_i64(cpu_fpr[a->rd], cpu_fpr[a->rs1], t0); + tcg_temp_free_i64(t0); + } + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fmin_s(DisasContext *ctx, arg_fmin_s *a) +{ + REQUIRE_FPU; + + gen_helper_fmin_s(cpu_fpr[a->rd], cpu_env, cpu_fpr[a->rs1], + cpu_fpr[a->rs2]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fmax_s(DisasContext *ctx, arg_fmax_s *a) +{ + REQUIRE_FPU; + + gen_helper_fmax_s(cpu_fpr[a->rd], cpu_env, cpu_fpr[a->rs1], + cpu_fpr[a->rs2]); + mark_fs_dirty(ctx); + return true; +} + +static bool trans_fcvt_w_s(DisasContext *ctx, arg_fcvt_w_s *a) +{ + REQUIRE_FPU; + + TCGv t0 = tcg_temp_new(); + gen_set_rm(ctx, a->rm); + gen_helper_fcvt_w_s(t0, cpu_env, cpu_fpr[a->rs1]); + gen_set_gpr(a->rd, t0); + tcg_temp_free(t0); + + return true; +} + +static bool trans_fcvt_wu_s(DisasContext *ctx, arg_fcvt_wu_s *a) +{ + REQUIRE_FPU; + + TCGv t0 = tcg_temp_new(); + gen_set_rm(ctx, a->rm); + gen_helper_fcvt_wu_s(t0, cpu_env, cpu_fpr[a->rs1]); + gen_set_gpr(a->rd, t0); + tcg_temp_free(t0); + + return true; +} + +static bool trans_fmv_x_w(DisasContext *ctx, arg_fmv_x_w *a) +{ + /* NOTE: This was FMV.X.S in an earlier version of the ISA spec! */ + REQUIRE_FPU; + + TCGv t0 = tcg_temp_new(); + +#if defined(TARGET_RISCV64) + tcg_gen_ext32s_tl(t0, cpu_fpr[a->rs1]); +#else + tcg_gen_extrl_i64_i32(t0, cpu_fpr[a->rs1]); +#endif + + gen_set_gpr(a->rd, t0); + tcg_temp_free(t0); + + return true; +} + +static bool trans_feq_s(DisasContext *ctx, arg_feq_s *a) +{ + REQUIRE_FPU; + TCGv t0 = tcg_temp_new(); + gen_helper_feq_s(t0, cpu_env, cpu_fpr[a->rs1], cpu_fpr[a->rs2]); + gen_set_gpr(a->rd, t0); + tcg_temp_free(t0); + return true; +} + +static bool trans_flt_s(DisasContext *ctx, arg_flt_s *a) +{ + REQUIRE_FPU; + TCGv t0 = tcg_temp_new(); + gen_helper_flt_s(t0, cpu_env, cpu_fpr[a->rs1], cpu_fpr[a->rs2]); + gen_set_gpr(a->rd, t0); + tcg_temp_free(t0); + return true; +} + +static bool trans_fle_s(DisasContext *ctx, arg_fle_s *a) +{ + REQUIRE_FPU; + TCGv t0 = tcg_temp_new(); + gen_helper_fle_s(t0, cpu_env, cpu_fpr[a->rs1], cpu_fpr[a->rs2]); + gen_set_gpr(a->rd, t0); + tcg_temp_free(t0); + return true; +} + +static bool trans_fclass_s(DisasContext *ctx, arg_fclass_s *a) +{ + REQUIRE_FPU; + + TCGv t0 = tcg_temp_new(); + + gen_helper_fclass_s(t0, cpu_fpr[a->rs1]); + + gen_set_gpr(a->rd, t0); + tcg_temp_free(t0); + + return true; +} + +static bool trans_fcvt_s_w(DisasContext *ctx, arg_fcvt_s_w *a) +{ + REQUIRE_FPU; + + TCGv t0 = tcg_temp_new(); + gen_get_gpr(t0, a->rs1); + + gen_set_rm(ctx, a->rm); + gen_helper_fcvt_s_w(cpu_fpr[a->rd], cpu_env, t0); + + mark_fs_dirty(ctx); + tcg_temp_free(t0); + + return true; +} + +static bool trans_fcvt_s_wu(DisasContext *ctx, arg_fcvt_s_wu *a) +{ + REQUIRE_FPU; + + TCGv t0 = tcg_temp_new(); + gen_get_gpr(t0, a->rs1); + + gen_set_rm(ctx, a->rm); + gen_helper_fcvt_s_wu(cpu_fpr[a->rd], cpu_env, t0); + + mark_fs_dirty(ctx); + tcg_temp_free(t0); + + return true; +} + +static bool trans_fmv_w_x(DisasContext *ctx, arg_fmv_w_x *a) +{ + /* NOTE: This was FMV.S.X in an earlier version of the ISA spec! */ + REQUIRE_FPU; + + TCGv t0 = tcg_temp_new(); + gen_get_gpr(t0, a->rs1); + +#if defined(TARGET_RISCV64) + tcg_gen_mov_i64(cpu_fpr[a->rd], t0); +#else + tcg_gen_extu_i32_i64(cpu_fpr[a->rd], t0); +#endif + + mark_fs_dirty(ctx); + tcg_temp_free(t0); + + return true; +} diff --git a/target/riscv/translate.c b/target/riscv/translate.c index 570d27a2d3c3..1bc2b136fbaf 100644 --- a/target/riscv/translate.c +++ b/target/riscv/translate.c @@ -1712,6 +1712,7 @@ bool decode_insn32(DisasContext *ctx, uint32_t insn); #include "insn_trans/trans_rvi.inc.c" #include "insn_trans/trans_rvm.inc.c" #include "insn_trans/trans_rva.inc.c" +#include "insn_trans/trans_rvf.inc.c" static void decode_RV32_64G(DisasContext *ctx) {