[PULL,07/30] target/riscv: Add AMO instructions for Zabha

Commit Message

Alistair Francis July 18, 2024, 2:09 a.m. UTC

From: LIU Zhiwei <[e-mail]>

Signed-off-by: LIU Zhiwei <[e-mail]>
Acked-by: Alistair Francis <[e-mail]>
Message-ID: <[e-mail]>
Signed-off-by: Alistair Francis <[e-mail]>
---
 target/riscv/cpu_cfg.h                      |   1 +
 target/riscv/insn32.decode                  |  20 +++
 target/riscv/translate.c                    |   4 +-
 target/riscv/insn_trans/trans_rvzabha.c.inc | 131 ++++++++++++++++++++
 4 files changed, 155 insertions(+), 1 deletion(-)
 create mode 100644 target/riscv/insn_trans/trans_rvzabha.c.inc

Patch

diff --git a/target/riscv/cpu_cfg.h b/target/riscv/cpu_cfg.h
index ddbfae37e5..120905a254 100644
--- a/target/riscv/cpu_cfg.h
+++ b/target/riscv/cpu_cfg.h
@@ -84,6 +84,7 @@  struct RISCVCPUConfig {
     bool ext_zaamo;
     bool ext_zacas;
     bool ext_zama16b;
+    bool ext_zabha;
     bool ext_zalrsc;
     bool ext_zawrs;
     bool ext_zfa;
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 60da673153..3bad6372f2 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -1021,3 +1021,23 @@  amocas_q    00101 . . ..... ..... 100 ..... 0101111 @atom_st
 # *** Zimop may-be-operation extension ***
 mop_r_n     1 . 00 .. 0111 .. ..... 100 ..... 1110011 @mop5
 mop_rr_n    1 . 00 .. 1 ..... ..... 100 ..... 1110011 @mop3
+
+# *** Zabhb Standard Extension ***
+amoswap_b  00001 . . ..... ..... 000 ..... 0101111 @atom_st
+amoadd_b   00000 . . ..... ..... 000 ..... 0101111 @atom_st
+amoxor_b   00100 . . ..... ..... 000 ..... 0101111 @atom_st
+amoand_b   01100 . . ..... ..... 000 ..... 0101111 @atom_st
+amoor_b    01000 . . ..... ..... 000 ..... 0101111 @atom_st
+amomin_b   10000 . . ..... ..... 000 ..... 0101111 @atom_st
+amomax_b   10100 . . ..... ..... 000 ..... 0101111 @atom_st
+amominu_b  11000 . . ..... ..... 000 ..... 0101111 @atom_st
+amomaxu_b  11100 . . ..... ..... 000 ..... 0101111 @atom_st
+amoswap_h  00001 . . ..... ..... 001 ..... 0101111 @atom_st
+amoadd_h   00000 . . ..... ..... 001 ..... 0101111 @atom_st
+amoxor_h   00100 . . ..... ..... 001 ..... 0101111 @atom_st
+amoand_h   01100 . . ..... ..... 001 ..... 0101111 @atom_st
+amoor_h    01000 . . ..... ..... 001 ..... 0101111 @atom_st
+amomin_h   10000 . . ..... ..... 001 ..... 0101111 @atom_st
+amomax_h   10100 . . ..... ..... 001 ..... 0101111 @atom_st
+amominu_h  11000 . . ..... ..... 001 ..... 0101111 @atom_st
+amomaxu_h  11100 . . ..... ..... 001 ..... 0101111 @atom_st
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 133550d6e2..4a3e786560 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -1083,8 +1083,9 @@  static bool gen_amo(DisasContext *ctx, arg_atomic *a,
 {
     TCGv dest = dest_gpr(ctx, a->rd);
     TCGv src1, src2 = get_gpr(ctx, a->rs2, EXT_NONE);
+    MemOp size = mop & MO_SIZE;
 
-    if (ctx->cfg_ptr->ext_zama16b) {
+    if (ctx->cfg_ptr->ext_zama16b && size >= MO_32) {
         mop |= MO_ATOM_WITHIN16;
     } else {
         mop |= MO_ALIGN;
@@ -1118,6 +1119,7 @@  static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
 #include "insn_trans/trans_rvb.c.inc"
 #include "insn_trans/trans_rvzicond.c.inc"
 #include "insn_trans/trans_rvzacas.c.inc"
+#include "insn_trans/trans_rvzabha.c.inc"
 #include "insn_trans/trans_rvzawrs.c.inc"
 #include "insn_trans/trans_rvzicbo.c.inc"
 #include "insn_trans/trans_rvzimop.c.inc"
diff --git a/target/riscv/insn_trans/trans_rvzabha.c.inc b/target/riscv/insn_trans/trans_rvzabha.c.inc
new file mode 100644
index 0000000000..9093a1cfc1
--- /dev/null
+++ b/target/riscv/insn_trans/trans_rvzabha.c.inc
@@ -0,0 +1,131 @@ 
+/*
+ * RISC-V translation routines for the Zabha Standard Extension.
+ *
+ * Copyright (c) 2024 Alibaba Group
+ *
+ * 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_ZABHA(ctx) do {           \
+    if (!ctx->cfg_ptr->ext_zabha) {       \
+        return false;                     \
+    }                                     \
+} while (0)
+
+static bool trans_amoswap_b(DisasContext *ctx, arg_amoswap_b *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_xchg_tl, MO_SB);
+}
+
+static bool trans_amoadd_b(DisasContext *ctx, arg_amoadd_b *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_add_tl, MO_SB);
+}
+
+static bool trans_amoxor_b(DisasContext *ctx, arg_amoxor_b *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_xor_tl, MO_SB);
+}
+
+static bool trans_amoand_b(DisasContext *ctx, arg_amoand_b *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_and_tl, MO_SB);
+}
+
+static bool trans_amoor_b(DisasContext *ctx, arg_amoor_b *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_or_tl, MO_SB);
+}
+
+static bool trans_amomin_b(DisasContext *ctx, arg_amomin_b *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_smin_tl, MO_SB);
+}
+
+static bool trans_amomax_b(DisasContext *ctx, arg_amomax_b *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_smax_tl, MO_SB);
+}
+
+static bool trans_amominu_b(DisasContext *ctx, arg_amominu_b *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_umin_tl, MO_SB);
+}
+
+static bool trans_amomaxu_b(DisasContext *ctx, arg_amomaxu_b *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_umax_tl, MO_SB);
+}
+
+static bool trans_amoswap_h(DisasContext *ctx, arg_amoswap_h *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_xchg_tl, MO_TESW);
+}
+
+static bool trans_amoadd_h(DisasContext *ctx, arg_amoadd_h *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_add_tl, MO_TESW);
+}
+
+static bool trans_amoxor_h(DisasContext *ctx, arg_amoxor_h *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_xor_tl, MO_TESW);
+}
+
+static bool trans_amoand_h(DisasContext *ctx, arg_amoand_h *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_and_tl, MO_TESW);
+}
+
+static bool trans_amoor_h(DisasContext *ctx, arg_amoor_h *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_or_tl, MO_TESW);
+}
+
+static bool trans_amomin_h(DisasContext *ctx, arg_amomin_h *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_smin_tl, MO_TESW);
+}
+
+static bool trans_amomax_h(DisasContext *ctx, arg_amomax_h *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_smax_tl, MO_TESW);
+}
+
+static bool trans_amominu_h(DisasContext *ctx, arg_amominu_h *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_umin_tl, MO_TESW);
+}
+
+static bool trans_amomaxu_h(DisasContext *ctx, arg_amomaxu_h *a)
+{
+    REQUIRE_ZABHA(ctx);
+    return gen_amo(ctx, a, &tcg_gen_atomic_fetch_umax_tl, MO_TESW);
+}