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From: Alistair Francis <alistair.francis@opensource.wdc.com>
To: qemu-devel@nongnu.org
Cc: alistair23@gmail.com, Kito Cheng <kito.cheng@sifive.com>,
	Chih-Min Chao <chihmin.chao@sifive.com>,
	Frank Chang <frank.chang@sifive.com>,
	Richard Henderson <richard.henderson@linaro.org>,
	Alistair Francis <alistair.francis@wdc.com>
Subject: [PULL 01/88] target/riscv: zfh: half-precision load and store
Date: Mon, 20 Dec 2021 14:55:38 +1000	[thread overview]
Message-ID: <20211220045705.62174-2-alistair.francis@opensource.wdc.com> (raw)
In-Reply-To: <20211220045705.62174-1-alistair.francis@opensource.wdc.com>

From: Kito Cheng <kito.cheng@sifive.com>

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Chih-Min Chao <chihmin.chao@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20211210074329.5775-2-frank.chang@sifive.com
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/cpu.h                        |  1 +
 target/riscv/insn32.decode                |  4 ++
 target/riscv/translate.c                  |  8 +++
 target/riscv/insn_trans/trans_rvzfh.c.inc | 65 +++++++++++++++++++++++
 4 files changed, 78 insertions(+)
 create mode 100644 target/riscv/insn_trans/trans_rvzfh.c.inc

diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 0760c0af93..570c49f365 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -312,6 +312,7 @@ struct RISCVCPU {
         bool ext_counters;
         bool ext_ifencei;
         bool ext_icsr;
+        bool ext_zfh;
 
         char *priv_spec;
         char *user_spec;
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 2f251dac1b..b36a3d8dbf 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -726,3 +726,7 @@ binv       0110100 .......... 001 ..... 0110011 @r
 binvi      01101. ........... 001 ..... 0010011 @sh
 bset       0010100 .......... 001 ..... 0110011 @r
 bseti      00101. ........... 001 ..... 0010011 @sh
+
+# *** RV32 Zfh Extension ***
+flh        ............   ..... 001 ..... 0000111 @i
+fsh        .......  ..... ..... 001 ..... 0100111 @s
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 1d57bc97b5..bea87b31b5 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -73,6 +73,7 @@ typedef struct DisasContext {
     RISCVMXL ol;
     bool virt_enabled;
     bool ext_ifencei;
+    bool ext_zfh;
     bool hlsx;
     /* vector extension */
     bool vill;
@@ -134,6 +135,11 @@ static void gen_nanbox_s(TCGv_i64 out, TCGv_i64 in)
     tcg_gen_ori_i64(out, in, MAKE_64BIT_MASK(32, 32));
 }
 
+static void gen_nanbox_h(TCGv_i64 out, TCGv_i64 in)
+{
+    tcg_gen_ori_i64(out, in, MAKE_64BIT_MASK(16, 48));
+}
+
 /*
  * A narrow n-bit operation, where n < FLEN, checks that input operands
  * are correctly Nan-boxed, i.e., all upper FLEN - n bits are 1.
@@ -574,6 +580,7 @@ static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
 #include "insn_trans/trans_rvh.c.inc"
 #include "insn_trans/trans_rvv.c.inc"
 #include "insn_trans/trans_rvb.c.inc"
+#include "insn_trans/trans_rvzfh.c.inc"
 #include "insn_trans/trans_privileged.c.inc"
 
 /* Include the auto-generated decoder for 16 bit insn */
@@ -626,6 +633,7 @@ static void riscv_tr_init_disas_context(DisasContextBase *dcbase, CPUState *cs)
     ctx->misa_ext = env->misa_ext;
     ctx->frm = -1;  /* unknown rounding mode */
     ctx->ext_ifencei = cpu->cfg.ext_ifencei;
+    ctx->ext_zfh = cpu->cfg.ext_zfh;
     ctx->vlen = cpu->cfg.vlen;
     ctx->mstatus_hs_fs = FIELD_EX32(tb_flags, TB_FLAGS, MSTATUS_HS_FS);
     ctx->hlsx = FIELD_EX32(tb_flags, TB_FLAGS, HLSX);
diff --git a/target/riscv/insn_trans/trans_rvzfh.c.inc b/target/riscv/insn_trans/trans_rvzfh.c.inc
new file mode 100644
index 0000000000..dad1d703d7
--- /dev/null
+++ b/target/riscv/insn_trans/trans_rvzfh.c.inc
@@ -0,0 +1,65 @@
+/*
+ * RISC-V translation routines for the RV64Zfh Standard Extension.
+ *
+ * Copyright (c) 2020 Chih-Min Chao, chihmin.chao@sifive.com
+ *
+ * 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 <http://www.gnu.org/licenses/>.
+ */
+
+#define REQUIRE_ZFH(ctx) do { \
+    if (!ctx->ext_zfh) {      \
+        return false;         \
+    }                         \
+} while (0)
+
+static bool trans_flh(DisasContext *ctx, arg_flh *a)
+{
+    TCGv_i64 dest;
+    TCGv t0;
+
+    REQUIRE_FPU;
+    REQUIRE_ZFH(ctx);
+
+    t0 = get_gpr(ctx, a->rs1, EXT_NONE);
+    if (a->imm) {
+        TCGv temp = temp_new(ctx);
+        tcg_gen_addi_tl(temp, t0, a->imm);
+        t0 = temp;
+    }
+
+    dest = cpu_fpr[a->rd];
+    tcg_gen_qemu_ld_i64(dest, t0, ctx->mem_idx, MO_TEUW);
+    gen_nanbox_h(dest, dest);
+
+    mark_fs_dirty(ctx);
+    return true;
+}
+
+static bool trans_fsh(DisasContext *ctx, arg_fsh *a)
+{
+    TCGv t0;
+
+    REQUIRE_FPU;
+    REQUIRE_ZFH(ctx);
+
+    t0 = get_gpr(ctx, a->rs1, EXT_NONE);
+    if (a->imm) {
+        TCGv temp = tcg_temp_new();
+        tcg_gen_addi_tl(temp, t0, a->imm);
+        t0 = temp;
+    }
+
+    tcg_gen_qemu_st_i64(cpu_fpr[a->rs2], t0, ctx->mem_idx, MO_TEUW);
+
+    return true;
+}
-- 
2.31.1



  reply	other threads:[~2021-12-20  4:59 UTC|newest]

Thread overview: 90+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-12-20  4:55 [PULL 00/88] riscv-to-apply queue Alistair Francis
2021-12-20  4:55 ` Alistair Francis [this message]
2021-12-20  4:55 ` [PULL 02/88] target/riscv: zfh: half-precision computational Alistair Francis
2021-12-20  4:55 ` [PULL 03/88] target/riscv: zfh: half-precision convert and move Alistair Francis
2021-12-20  4:55 ` [PULL 04/88] target/riscv: zfh: half-precision floating-point compare Alistair Francis
2021-12-20  4:55 ` [PULL 05/88] target/riscv: zfh: half-precision floating-point classify Alistair Francis
2021-12-20  4:55 ` [PULL 06/88] target/riscv: zfh: add Zfh cpu property Alistair Francis
2021-12-20  4:55 ` [PULL 07/88] target/riscv: zfh: implement zfhmin extension Alistair Francis
2021-12-20  4:55 ` [PULL 08/88] target/riscv: zfh: add Zfhmin cpu property Alistair Francis
2021-12-20  4:55 ` [PULL 09/88] target/riscv: drop vector 0.7.1 and add 1.0 support Alistair Francis
2021-12-20  4:55 ` [PULL 10/88] target/riscv: Use FIELD_EX32() to extract wd field Alistair Francis
2021-12-20  4:55 ` [PULL 11/88] target/riscv: rvv-1.0: add mstatus VS field Alistair Francis
2021-12-20  4:55 ` [PULL 12/88] target/riscv: rvv-1.0: set mstatus.SD bit if mstatus.VS is dirty Alistair Francis
2021-12-20  4:55 ` [PULL 13/88] target/riscv: rvv-1.0: add sstatus VS field Alistair Francis
2021-12-20  4:55 ` [PULL 14/88] target/riscv: rvv-1.0: introduce writable misa.v field Alistair Francis
2021-12-20  4:55 ` [PULL 15/88] target/riscv: rvv-1.0: add translation-time vector context status Alistair Francis
2021-12-20  4:55 ` [PULL 16/88] target/riscv: rvv-1.0: remove rvv related codes from fcsr registers Alistair Francis
2021-12-20  4:55 ` [PULL 17/88] target/riscv: rvv-1.0: add vcsr register Alistair Francis
2021-12-20  4:55 ` [PULL 18/88] target/riscv: rvv-1.0: add vlenb register Alistair Francis
2021-12-20  4:55 ` [PULL 19/88] target/riscv: rvv-1.0: check MSTATUS_VS when accessing vector csr registers Alistair Francis
2021-12-20  4:55 ` [PULL 20/88] target/riscv: rvv-1.0: remove MLEN calculations Alistair Francis
2021-12-20  4:55 ` [PULL 21/88] target/riscv: rvv-1.0: add fractional LMUL Alistair Francis
2021-12-20  4:55 ` [PULL 22/88] target/riscv: rvv-1.0: add VMA and VTA Alistair Francis
2021-12-20  4:56 ` [PULL 23/88] target/riscv: rvv-1.0: update check functions Alistair Francis
2021-12-20  4:56 ` [PULL 24/88] target/riscv: introduce more imm value modes in translator functions Alistair Francis
2021-12-20  4:56 ` [PULL 25/88] target/riscv: rvv:1.0: add translation-time nan-box helper function Alistair Francis
2021-12-20  4:56 ` [PULL 26/88] target/riscv: rvv-1.0: remove amo operations instructions Alistair Francis
2021-12-20  4:56 ` [PULL 27/88] target/riscv: rvv-1.0: configure instructions Alistair Francis
2021-12-20  4:56 ` [PULL 28/88] target/riscv: rvv-1.0: stride load and store instructions Alistair Francis
2021-12-20  4:56 ` [PULL 29/88] target/riscv: rvv-1.0: index " Alistair Francis
2021-12-20  4:56 ` [PULL 30/88] target/riscv: rvv-1.0: fix address index overflow bug of indexed load/store insns Alistair Francis
2021-12-20  4:56 ` [PULL 31/88] target/riscv: rvv-1.0: fault-only-first unit stride load Alistair Francis
2021-12-20  4:56 ` [PULL 32/88] target/riscv: rvv-1.0: load/store whole register instructions Alistair Francis
2021-12-20  4:56 ` [PULL 33/88] target/riscv: rvv-1.0: update vext_max_elems() for load/store insns Alistair Francis
2021-12-20  4:56 ` [PULL 34/88] target/riscv: rvv-1.0: take fractional LMUL into vector max elements calculation Alistair Francis
2021-12-20  4:56 ` [PULL 35/88] target/riscv: rvv-1.0: floating-point square-root instruction Alistair Francis
2021-12-20  4:56 ` [PULL 36/88] target/riscv: rvv-1.0: floating-point classify instructions Alistair Francis
2021-12-20  4:56 ` [PULL 37/88] target/riscv: rvv-1.0: count population in mask instruction Alistair Francis
2021-12-20  4:56 ` [PULL 38/88] target/riscv: rvv-1.0: find-first-set mask bit instruction Alistair Francis
2021-12-20  4:56 ` [PULL 39/88] target/riscv: rvv-1.0: set-X-first mask bit instructions Alistair Francis
2021-12-20  4:56 ` [PULL 40/88] target/riscv: rvv-1.0: iota instruction Alistair Francis
2021-12-20  4:56 ` [PULL 41/88] target/riscv: rvv-1.0: element index instruction Alistair Francis
2021-12-20  4:56 ` [PULL 42/88] target/riscv: rvv-1.0: allow load element with sign-extended Alistair Francis
2021-12-20  4:56 ` [PULL 43/88] target/riscv: rvv-1.0: register gather instructions Alistair Francis
2021-12-20  4:56 ` [PULL 44/88] target/riscv: rvv-1.0: integer scalar move instructions Alistair Francis
2021-12-20  4:56 ` [PULL 45/88] target/riscv: rvv-1.0: floating-point move instruction Alistair Francis
2021-12-20  4:56 ` [PULL 46/88] target/riscv: rvv-1.0: floating-point scalar move instructions Alistair Francis
2021-12-20  4:56 ` [PULL 47/88] target/riscv: rvv-1.0: whole register " Alistair Francis
2021-12-20  4:56 ` [PULL 48/88] target/riscv: rvv-1.0: integer extension instructions Alistair Francis
2021-12-20  4:56 ` [PULL 49/88] target/riscv: rvv-1.0: single-width averaging add and subtract instructions Alistair Francis
2021-12-20  4:56 ` [PULL 50/88] target/riscv: rvv-1.0: single-width bit shift instructions Alistair Francis
2021-12-20  4:56 ` [PULL 51/88] target/riscv: rvv-1.0: integer add-with-carry/subtract-with-borrow Alistair Francis
2021-12-20  4:56 ` [PULL 52/88] target/riscv: rvv-1.0: narrowing integer right shift instructions Alistair Francis
2021-12-20  4:56 ` [PULL 53/88] target/riscv: rvv-1.0: widening integer multiply-add instructions Alistair Francis
2021-12-20  4:56 ` [PULL 54/88] target/riscv: rvv-1.0: single-width saturating add and subtract instructions Alistair Francis
2021-12-20  4:56 ` [PULL 55/88] target/riscv: rvv-1.0: integer comparison instructions Alistair Francis
2021-12-20  4:56 ` [PULL 56/88] target/riscv: rvv-1.0: floating-point compare instructions Alistair Francis
2021-12-20  4:56 ` [PULL 57/88] target/riscv: rvv-1.0: mask-register logical instructions Alistair Francis
2021-12-20  4:56 ` [PULL 58/88] target/riscv: rvv-1.0: slide instructions Alistair Francis
2021-12-20  4:56 ` [PULL 59/88] target/riscv: rvv-1.0: floating-point " Alistair Francis
2021-12-20  4:56 ` [PULL 60/88] target/riscv: rvv-1.0: narrowing fixed-point clip instructions Alistair Francis
2021-12-20  4:56 ` [PULL 61/88] target/riscv: rvv-1.0: single-width floating-point reduction Alistair Francis
2021-12-20  4:56 ` [PULL 62/88] target/riscv: rvv-1.0: widening floating-point reduction instructions Alistair Francis
2021-12-20  4:56 ` [PULL 63/88] target/riscv: rvv-1.0: single-width scaling shift instructions Alistair Francis
2021-12-20  4:56 ` [PULL 64/88] target/riscv: rvv-1.0: remove widening saturating scaled multiply-add Alistair Francis
2021-12-20  4:56 ` [PULL 65/88] target/riscv: rvv-1.0: remove vmford.vv and vmford.vf Alistair Francis
2021-12-20  4:56 ` [PULL 66/88] target/riscv: rvv-1.0: remove integer extract instruction Alistair Francis
2021-12-20  4:56 ` [PULL 67/88] target/riscv: rvv-1.0: floating-point min/max instructions Alistair Francis
2021-12-20  4:56 ` [PULL 68/88] target/riscv: introduce floating-point rounding mode enum Alistair Francis
2021-12-20  4:56 ` [PULL 69/88] target/riscv: rvv-1.0: floating-point/integer type-convert instructions Alistair Francis
2021-12-20  4:56 ` [PULL 70/88] target/riscv: rvv-1.0: widening floating-point/integer type-convert Alistair Francis
2021-12-20  4:56 ` [PULL 71/88] target/riscv: add "set round to odd" rounding mode helper function Alistair Francis
2021-12-20  4:56 ` [PULL 72/88] target/riscv: rvv-1.0: narrowing floating-point/integer type-convert Alistair Francis
2021-12-20  4:56 ` [PULL 73/88] target/riscv: rvv-1.0: relax RV_VLEN_MAX to 1024-bits Alistair Francis
2021-12-20  4:56 ` [PULL 74/88] target/riscv: rvv-1.0: implement vstart CSR Alistair Francis
2021-12-20  4:56 ` [PULL 75/88] target/riscv: rvv-1.0: trigger illegal instruction exception if frm is not valid Alistair Francis
2021-12-20  4:56 ` [PULL 76/88] target/riscv: gdb: support vector registers for rv64 & rv32 Alistair Francis
2021-12-20  4:56 ` [PULL 77/88] target/riscv: rvv-1.0: floating-point reciprocal square-root estimate instruction Alistair Francis
2021-12-20  4:56 ` [PULL 78/88] target/riscv: rvv-1.0: floating-point reciprocal " Alistair Francis
2021-12-20  4:56 ` [PULL 79/88] target/riscv: rvv-1.0: rename r2_zimm to r2_zimm11 Alistair Francis
2021-12-20  4:56 ` [PULL 80/88] target/riscv: rvv-1.0: add vsetivli instruction Alistair Francis
2021-12-20  4:56 ` [PULL 81/88] target/riscv: rvv-1.0: add evl parameter to vext_ldst_us() Alistair Francis
2021-12-20  4:56 ` [PULL 82/88] target/riscv: rvv-1.0: add vector unit-stride mask load/store insns Alistair Francis
2021-12-20  4:57 ` [PULL 83/88] target/riscv: rvv-1.0: rename vmandnot.mm and vmornot.mm to vmandn.mm and vmorn.mm Alistair Francis
2021-12-20  4:57 ` [PULL 84/88] target/riscv: rvv-1.0: update opivv_vadc_check() comment Alistair Francis
2021-12-20  4:57 ` [PULL 85/88] target/riscv: rvv-1.0: Add ELEN checks for widening and narrowing instructions Alistair Francis
2021-12-20  4:57 ` [PULL 86/88] riscv: Set 5.4 as minimum kernel version for riscv32 Alistair Francis via
2021-12-20  4:57 ` [PULL 87/88] target/riscv: Enable bitmanip Zb[abcs] instructions Alistair Francis
2021-12-20  4:57 ` [PULL 88/88] hw/riscv: Use load address rather than entry point for fw_dynamic next_addr Alistair Francis
2021-12-20 21:19 ` [PULL 00/88] riscv-to-apply queue Richard Henderson

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