[PATCH v5 00/17] support subsets of bitmanip extension

[PATCH v5 00/17] support subsets of bitmanip extension

[frank.chang]

From: Frank Chang <frank.chang@sifive.com>

This patchset implements RISC-V B-extension v0.93 version Zba, Zbb and
Zbs subset instructions. Some Zbp instructions are also implemented as
they have similar behavior with their Zba-, Zbb- and Zbs-family
instructions or for Zbb pseudo instructions (e.g. rev8, orc.b).

Specification:
https://github.com/riscv/riscv-bitmanip/blob/master/bitmanip-0.93.pdf

The port is available here:
https://github.com/sifive/qemu/tree/rvb-upstream-v5

To test rvb implementation, specify cpu argument with 'x-b=true' or
'x-b=true,bext_spec=v0.93'to enable B-extension support.

Changelog:

v5:
 * add bext_spec cpu option, default set to v0.93.
 * rebase master branch.

v4:
 * Remove 'rd != 0' checks from immediate shift instructions.

v3:
 * Convert existing immediate shift instructions to use gen_shifti()
   and gen_shiftiw() interfaces.
 * Rename *u.w instructions to *.uw.
 * Rename sb* instructions to b*.
 * Rename pcnt* instructions to cpop*.

v2:
 * Add gen_shifti(), gen_shiftw(), gen_shiftiw() helper functions.
 * Remove addwu, subwu and addiwu instructions as they are not longer
   exist in latest draft.
 * Optimize implementation with cleaner tcg ops.

Frank Chang (5):
  target/riscv: rvb: count bits set
  target/riscv: add gen_shifti() and gen_shiftiw() helper functions
  target/riscv: rvb: generalized reverse
  target/riscv: rvb: generalized or-combine
  target/riscv: rvb: add b-ext version cpu option

Kito Cheng (12):
  target/riscv: reformat @sh format encoding for B-extension
  target/riscv: rvb: count leading/trailing zeros
  target/riscv: rvb: logic-with-negate
  target/riscv: rvb: pack two words into one register
  target/riscv: rvb: min/max instructions
  target/riscv: rvb: sign-extend instructions
  target/riscv: rvb: single-bit instructions
  target/riscv: rvb: shift ones
  target/riscv: rvb: rotate (left/right)
  target/riscv: rvb: address calculation
  target/riscv: rvb: add/shift with prefix zero-extend
  target/riscv: rvb: support and turn on B-extension from command line

 target/riscv/bitmanip_helper.c          | 102 ++++++
 target/riscv/cpu.c                      |  27 ++
 target/riscv/cpu.h                      |   5 +
 target/riscv/helper.h                   |   9 +
 target/riscv/insn32-64.decode           |  33 ++
 target/riscv/insn32.decode              |  54 ++-
 target/riscv/insn_trans/trans_rvb.c.inc | 417 ++++++++++++++++++++++++
 target/riscv/insn_trans/trans_rvi.c.inc |  54 +--
 target/riscv/meson.build                |   1 +
 target/riscv/translate.c                | 314 ++++++++++++++++++
 10 files changed, 960 insertions(+), 56 deletions(-)
 create mode 100644 target/riscv/bitmanip_helper.c
 create mode 100644 target/riscv/insn_trans/trans_rvb.c.inc

--
2.17.1

[PATCH v5 01/17] target/riscv: reformat @sh format encoding for B-extension

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
---
 target/riscv/insn32.decode | 10 +++++-----
 1 file changed, 5 insertions(+), 5 deletions(-)

diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 84080dd18ca..3823b3ea800 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -22,7 +22,7 @@
 %rs1       15:5
 %rd        7:5
 
-%sh10    20:10
+%sh7    20:7
 %csr    20:12
 %rm     12:3
 %nf     29:3                     !function=ex_plus_1
@@ -58,7 +58,7 @@
 @u       ....................      ..... ....... &u      imm=%imm_u          %rd
 @j       ....................      ..... ....... &j      imm=%imm_j          %rd
 
-@sh      ......  ...... .....  ... ..... ....... &shift  shamt=%sh10      %rs1 %rd
+@sh      ......  ...... .....  ... ..... ....... &shift  shamt=%sh7     %rs1 %rd
 @csr     ............   .....  ... ..... .......               %csr     %rs1 %rd
 
 @atom_ld ..... aq:1 rl:1 ..... ........ ..... ....... &atomic rs2=0     %rs1 %rd
@@ -122,9 +122,9 @@ sltiu    ............     ..... 011 ..... 0010011 @i
 xori     ............     ..... 100 ..... 0010011 @i
 ori      ............     ..... 110 ..... 0010011 @i
 andi     ............     ..... 111 ..... 0010011 @i
-slli     00.... ......    ..... 001 ..... 0010011 @sh
-srli     00.... ......    ..... 101 ..... 0010011 @sh
-srai     01.... ......    ..... 101 ..... 0010011 @sh
+slli     00000. ......    ..... 001 ..... 0010011 @sh
+srli     00000. ......    ..... 101 ..... 0010011 @sh
+srai     01000. ......    ..... 101 ..... 0010011 @sh
 add      0000000 .....    ..... 000 ..... 0110011 @r
 sub      0100000 .....    ..... 000 ..... 0110011 @r
 sll      0000000 .....    ..... 001 ..... 0110011 @r
-- 
2.17.1

[PATCH v5 02/17] target/riscv: rvb: count leading/trailing zeros

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/insn32-64.decode           |  4 +++
 target/riscv/insn32.decode              |  7 +++-
 target/riscv/insn_trans/trans_rvb.c.inc | 47 +++++++++++++++++++++++++
 target/riscv/translate.c                | 42 ++++++++++++++++++++++
 4 files changed, 99 insertions(+), 1 deletion(-)
 create mode 100644 target/riscv/insn_trans/trans_rvb.c.inc

diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
index 8157dee8b7c..f4c42720fc7 100644
--- a/target/riscv/insn32-64.decode
+++ b/target/riscv/insn32-64.decode
@@ -86,3 +86,7 @@ fmv_d_x    1111001  00000 ..... 000 ..... 1010011 @r2
 hlv_wu    0110100  00001   ..... 100 ..... 1110011 @r2
 hlv_d     0110110  00000   ..... 100 ..... 1110011 @r2
 hsv_d     0110111  .....   ..... 100 00000 1110011 @r2_s
+
+# *** RV64B Standard Extension (in addition to RV32B) ***
+clzw       0110000 00000 ..... 001 ..... 0011011 @r2
+ctzw       0110000 00001 ..... 001 ..... 0011011 @r2
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 3823b3ea800..8fe838cf0d0 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -40,6 +40,7 @@
 &i    imm rs1 rd
 &j    imm rd
 &r    rd rs1 rs2
+&r2   rd rs1
 &s    imm rs1 rs2
 &u    imm rd
 &shift     shamt rs1 rd
@@ -67,7 +68,7 @@
 @r4_rm   ..... ..  ..... ..... ... ..... ....... %rs3 %rs2 %rs1 %rm %rd
 @r_rm    .......   ..... ..... ... ..... ....... %rs2 %rs1 %rm %rd
 @r2_rm   .......   ..... ..... ... ..... ....... %rs1 %rm %rd
-@r2      .......   ..... ..... ... ..... ....... %rs1 %rd
+@r2      .......   ..... ..... ... ..... ....... &r2 %rs1 %rd
 @r2_nfvm ... ... vm:1 ..... ..... ... ..... ....... &r2nfvm %nf %rs1 %rd
 @r2_vm   ...... vm:1 ..... ..... ... ..... ....... &rmr %rs2 %rd
 @r1_vm   ...... vm:1 ..... ..... ... ..... ....... %rd
@@ -592,3 +593,7 @@ vcompress_vm    010111 - ..... ..... 010 ..... 1010111 @r
 
 vsetvli         0 ........... ..... 111 ..... 1010111  @r2_zimm
 vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
+
+# *** RV32B Standard Extension ***
+clz        011000 000000 ..... 001 ..... 0010011 @r2
+ctz        011000 000001 ..... 001 ..... 0010011 @r2
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
new file mode 100644
index 00000000000..76788c2f353
--- /dev/null
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -0,0 +1,47 @@
+/*
+ * RISC-V translation routines for the RVB Standard Extension.
+ *
+ * Copyright (c) 2020 Kito Cheng, kito.cheng@sifive.com
+ * Copyright (c) 2020 Frank Chang, frank.chang@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/>.
+ */
+
+static bool trans_clz(DisasContext *ctx, arg_clz *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_unary(ctx, a, gen_clz);
+}
+
+static bool trans_ctz(DisasContext *ctx, arg_ctz *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_unary(ctx, a, gen_ctz);
+}
+
+/* RV64-only instructions */
+#ifdef TARGET_RISCV64
+
+static bool trans_clzw(DisasContext *ctx, arg_clzw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_unary(ctx, a, gen_clzw);
+}
+
+static bool trans_ctzw(DisasContext *ctx, arg_ctzw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_unary(ctx, a, gen_ctzw);
+}
+
+#endif
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 2f9f5ccc621..4648c422f42 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -536,6 +536,23 @@ static bool gen_arith_div_uw(DisasContext *ctx, arg_r *a,
 
 #endif
 
+#ifdef TARGET_RISCV64
+
+static void gen_ctzw(TCGv ret, TCGv arg1)
+{
+    tcg_gen_ori_i64(ret, arg1, MAKE_64BIT_MASK(32, 32));
+    tcg_gen_ctzi_i64(ret, ret, 64);
+}
+
+static void gen_clzw(TCGv ret, TCGv arg1)
+{
+    tcg_gen_ext32u_i64(ret, arg1);
+    tcg_gen_clzi_i64(ret, ret, 64);
+    tcg_gen_subi_i64(ret, ret, 32);
+}
+
+#endif
+
 static bool gen_arith(DisasContext *ctx, arg_r *a,
                       void(*func)(TCGv, TCGv, TCGv))
 {
@@ -581,6 +598,30 @@ static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
     return cpu_ldl_code(env, pc);
 }
 
+static void gen_ctz(TCGv ret, TCGv arg1)
+{
+    tcg_gen_ctzi_tl(ret, arg1, TARGET_LONG_BITS);
+}
+
+static void gen_clz(TCGv ret, TCGv arg1)
+{
+    tcg_gen_clzi_tl(ret, arg1, TARGET_LONG_BITS);
+}
+
+static bool gen_unary(DisasContext *ctx, arg_r2 *a,
+                      void(*func)(TCGv, TCGv))
+{
+    TCGv source = tcg_temp_new();
+
+    gen_get_gpr(source, a->rs1);
+
+    (*func)(source, source);
+
+    gen_set_gpr(a->rd, source);
+    tcg_temp_free(source);
+    return true;
+}
+
 /* Include insn module translation function */
 #include "insn_trans/trans_rvi.c.inc"
 #include "insn_trans/trans_rvm.c.inc"
@@ -589,6 +630,7 @@ static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
 #include "insn_trans/trans_rvd.c.inc"
 #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_privileged.c.inc"
 
 /* Include the auto-generated decoder for 16 bit insn */
-- 
2.17.1

[PATCH v5 03/17] target/riscv: rvb: count bits set

[frank.chang]

From: Frank Chang <frank.chang@sifive.com>

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
---
 target/riscv/insn32-64.decode           |  1 +
 target/riscv/insn32.decode              |  1 +
 target/riscv/insn_trans/trans_rvb.c.inc | 12 ++++++++++++
 target/riscv/translate.c                |  6 ++++++
 4 files changed, 20 insertions(+)

diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
index f4c42720fc7..89498a9a28a 100644
--- a/target/riscv/insn32-64.decode
+++ b/target/riscv/insn32-64.decode
@@ -90,3 +90,4 @@ hsv_d     0110111  .....   ..... 100 00000 1110011 @r2_s
 # *** RV64B Standard Extension (in addition to RV32B) ***
 clzw       0110000 00000 ..... 001 ..... 0011011 @r2
 ctzw       0110000 00001 ..... 001 ..... 0011011 @r2
+cpopw      0110000 00010 ..... 001 ..... 0011011 @r2
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 8fe838cf0d0..0e321da37f4 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -597,3 +597,4 @@ vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
 # *** RV32B Standard Extension ***
 clz        011000 000000 ..... 001 ..... 0010011 @r2
 ctz        011000 000001 ..... 001 ..... 0010011 @r2
+cpop       011000 000010 ..... 001 ..... 0010011 @r2
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index 76788c2f353..dbbd94e1015 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -29,6 +29,12 @@ static bool trans_ctz(DisasContext *ctx, arg_ctz *a)
     return gen_unary(ctx, a, gen_ctz);
 }
 
+static bool trans_cpop(DisasContext *ctx, arg_cpop *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_unary(ctx, a, tcg_gen_ctpop_tl);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
@@ -44,4 +50,10 @@ static bool trans_ctzw(DisasContext *ctx, arg_ctzw *a)
     return gen_unary(ctx, a, gen_ctzw);
 }
 
+static bool trans_cpopw(DisasContext *ctx, arg_cpopw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_unary(ctx, a, gen_cpopw);
+}
+
 #endif
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 4648c422f42..b20a58c63b4 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -551,6 +551,12 @@ static void gen_clzw(TCGv ret, TCGv arg1)
     tcg_gen_subi_i64(ret, ret, 32);
 }
 
+static void gen_cpopw(TCGv ret, TCGv arg1)
+{
+    tcg_gen_ext32u_tl(arg1, arg1);
+    tcg_gen_ctpop_tl(ret, arg1);
+}
+
 #endif
 
 static bool gen_arith(DisasContext *ctx, arg_r *a,
-- 
2.17.1

[PATCH v5 04/17] target/riscv: rvb: logic-with-negate

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/insn32.decode              |  4 ++++
 target/riscv/insn_trans/trans_rvb.c.inc | 18 ++++++++++++++++++
 2 files changed, 22 insertions(+)

diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 0e321da37f4..d0b3f109b4e 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -598,3 +598,7 @@ vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
 clz        011000 000000 ..... 001 ..... 0010011 @r2
 ctz        011000 000001 ..... 001 ..... 0010011 @r2
 cpop       011000 000010 ..... 001 ..... 0010011 @r2
+
+andn       0100000 .......... 111 ..... 0110011 @r
+orn        0100000 .......... 110 ..... 0110011 @r
+xnor       0100000 .......... 100 ..... 0110011 @r
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index dbbd94e1015..73c4693a263 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -35,6 +35,24 @@ static bool trans_cpop(DisasContext *ctx, arg_cpop *a)
     return gen_unary(ctx, a, tcg_gen_ctpop_tl);
 }
 
+static bool trans_andn(DisasContext *ctx, arg_andn *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, tcg_gen_andc_tl);
+}
+
+static bool trans_orn(DisasContext *ctx, arg_orn *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, tcg_gen_orc_tl);
+}
+
+static bool trans_xnor(DisasContext *ctx, arg_xnor *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, tcg_gen_eqv_tl);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
-- 
2.17.1

[PATCH v5 05/17] target/riscv: rvb: pack two words into one register

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/insn32-64.decode           |  3 ++
 target/riscv/insn32.decode              |  3 ++
 target/riscv/insn_trans/trans_rvb.c.inc | 30 +++++++++++++++++++
 target/riscv/translate.c                | 40 +++++++++++++++++++++++++
 4 files changed, 76 insertions(+)

diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
index 89498a9a28a..d28c0bcf2c1 100644
--- a/target/riscv/insn32-64.decode
+++ b/target/riscv/insn32-64.decode
@@ -91,3 +91,6 @@ hsv_d     0110111  .....   ..... 100 00000 1110011 @r2_s
 clzw       0110000 00000 ..... 001 ..... 0011011 @r2
 ctzw       0110000 00001 ..... 001 ..... 0011011 @r2
 cpopw      0110000 00010 ..... 001 ..... 0011011 @r2
+
+packw      0000100 .......... 100 ..... 0111011 @r
+packuw     0100100 .......... 100 ..... 0111011 @r
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index d0b3f109b4e..7f32b8c6d15 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -602,3 +602,6 @@ cpop       011000 000010 ..... 001 ..... 0010011 @r2
 andn       0100000 .......... 111 ..... 0110011 @r
 orn        0100000 .......... 110 ..... 0110011 @r
 xnor       0100000 .......... 100 ..... 0110011 @r
+pack       0000100 .......... 100 ..... 0110011 @r
+packu      0100100 .......... 100 ..... 0110011 @r
+packh      0000100 .......... 111 ..... 0110011 @r
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index 73c4693a263..2d24dafac09 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -53,6 +53,24 @@ static bool trans_xnor(DisasContext *ctx, arg_xnor *a)
     return gen_arith(ctx, a, tcg_gen_eqv_tl);
 }
 
+static bool trans_pack(DisasContext *ctx, arg_pack *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, gen_pack);
+}
+
+static bool trans_packu(DisasContext *ctx, arg_packu *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, gen_packu);
+}
+
+static bool trans_packh(DisasContext *ctx, arg_packh *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, gen_packh);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
@@ -74,4 +92,16 @@ static bool trans_cpopw(DisasContext *ctx, arg_cpopw *a)
     return gen_unary(ctx, a, gen_cpopw);
 }
 
+static bool trans_packw(DisasContext *ctx, arg_packw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, gen_packw);
+}
+
+static bool trans_packuw(DisasContext *ctx, arg_packuw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, gen_packuw);
+}
+
 #endif
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index b20a58c63b4..4333207aeff 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -536,6 +536,29 @@ static bool gen_arith_div_uw(DisasContext *ctx, arg_r *a,
 
 #endif
 
+static void gen_pack(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    tcg_gen_deposit_tl(ret, arg1, arg2,
+                       TARGET_LONG_BITS / 2,
+                       TARGET_LONG_BITS / 2);
+}
+
+static void gen_packu(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    TCGv t = tcg_temp_new();
+    tcg_gen_shri_tl(t, arg1, TARGET_LONG_BITS / 2);
+    tcg_gen_deposit_tl(ret, arg2, t, 0, TARGET_LONG_BITS / 2);
+    tcg_temp_free(t);
+}
+
+static void gen_packh(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    TCGv t = tcg_temp_new();
+    tcg_gen_ext8u_tl(t, arg2);
+    tcg_gen_deposit_tl(ret, arg1, t, 8, TARGET_LONG_BITS - 8);
+    tcg_temp_free(t);
+}
+
 #ifdef TARGET_RISCV64
 
 static void gen_ctzw(TCGv ret, TCGv arg1)
@@ -557,6 +580,23 @@ static void gen_cpopw(TCGv ret, TCGv arg1)
     tcg_gen_ctpop_tl(ret, arg1);
 }
 
+static void gen_packw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    TCGv t = tcg_temp_new();
+    tcg_gen_ext16s_i64(t, arg2);
+    tcg_gen_deposit_i64(ret, arg1, t, 16, 48);
+    tcg_temp_free(t);
+}
+
+static void gen_packuw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    TCGv t = tcg_temp_new();
+    tcg_gen_shri_i64(t, arg1, 16);
+    tcg_gen_deposit_i64(ret, arg2, t, 0, 16);
+    tcg_gen_ext32s_i64(ret, ret);
+    tcg_temp_free(t);
+}
+
 #endif
 
 static bool gen_arith(DisasContext *ctx, arg_r *a,
-- 
2.17.1

[PATCH v5 06/17] target/riscv: rvb: min/max instructions

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
---
 target/riscv/insn32.decode              |  4 ++++
 target/riscv/insn_trans/trans_rvb.c.inc | 24 ++++++++++++++++++++++++
 2 files changed, 28 insertions(+)

diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 7f32b8c6d15..d64326fd864 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -605,3 +605,7 @@ xnor       0100000 .......... 100 ..... 0110011 @r
 pack       0000100 .......... 100 ..... 0110011 @r
 packu      0100100 .......... 100 ..... 0110011 @r
 packh      0000100 .......... 111 ..... 0110011 @r
+min        0000101 .......... 100 ..... 0110011 @r
+minu       0000101 .......... 101 ..... 0110011 @r
+max        0000101 .......... 110 ..... 0110011 @r
+maxu       0000101 .......... 111 ..... 0110011 @r
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index 2d24dafac09..2aa4515fe31 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -71,6 +71,30 @@ static bool trans_packh(DisasContext *ctx, arg_packh *a)
     return gen_arith(ctx, a, gen_packh);
 }
 
+static bool trans_min(DisasContext *ctx, arg_min *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, tcg_gen_smin_tl);
+}
+
+static bool trans_max(DisasContext *ctx, arg_max *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, tcg_gen_smax_tl);
+}
+
+static bool trans_minu(DisasContext *ctx, arg_minu *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, tcg_gen_umin_tl);
+}
+
+static bool trans_maxu(DisasContext *ctx, arg_maxu *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, tcg_gen_umax_tl);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
-- 
2.17.1

[PATCH v5 07/17] target/riscv: rvb: sign-extend instructions

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
---
 target/riscv/insn32.decode              |  2 ++
 target/riscv/insn_trans/trans_rvb.c.inc | 12 ++++++++++++
 2 files changed, 14 insertions(+)

diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index d64326fd864..938c23088eb 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -598,6 +598,8 @@ vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
 clz        011000 000000 ..... 001 ..... 0010011 @r2
 ctz        011000 000001 ..... 001 ..... 0010011 @r2
 cpop       011000 000010 ..... 001 ..... 0010011 @r2
+sext_b     011000 000100 ..... 001 ..... 0010011 @r2
+sext_h     011000 000101 ..... 001 ..... 0010011 @r2
 
 andn       0100000 .......... 111 ..... 0110011 @r
 orn        0100000 .......... 110 ..... 0110011 @r
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index 2aa4515fe31..1496996a660 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -95,6 +95,18 @@ static bool trans_maxu(DisasContext *ctx, arg_maxu *a)
     return gen_arith(ctx, a, tcg_gen_umax_tl);
 }
 
+static bool trans_sext_b(DisasContext *ctx, arg_sext_b *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_unary(ctx, a, tcg_gen_ext8s_tl);
+}
+
+static bool trans_sext_h(DisasContext *ctx, arg_sext_h *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_unary(ctx, a, tcg_gen_ext16s_tl);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
-- 
2.17.1

[PATCH v5 08/17] target/riscv: add gen_shifti() and gen_shiftiw() helper functions

[frank.chang]

From: Frank Chang <frank.chang@sifive.com>

Add gen_shifti() and gen_shiftiw() helper functions to reuse the same
interfaces for immediate shift instructions.

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/insn_trans/trans_rvi.c.inc | 54 ++-----------------------
 target/riscv/translate.c                | 43 ++++++++++++++++++++
 2 files changed, 47 insertions(+), 50 deletions(-)

diff --git a/target/riscv/insn_trans/trans_rvi.c.inc b/target/riscv/insn_trans/trans_rvi.c.inc
index d04ca0394cf..7b894201840 100644
--- a/target/riscv/insn_trans/trans_rvi.c.inc
+++ b/target/riscv/insn_trans/trans_rvi.c.inc
@@ -261,54 +261,17 @@ static bool trans_andi(DisasContext *ctx, arg_andi *a)
 }
 static bool trans_slli(DisasContext *ctx, arg_slli *a)
 {
-    if (a->shamt >= TARGET_LONG_BITS) {
-        return false;
-    }
-
-    if (a->rd != 0) {
-        TCGv t = tcg_temp_new();
-        gen_get_gpr(t, a->rs1);
-
-        tcg_gen_shli_tl(t, t, a->shamt);
-
-        gen_set_gpr(a->rd, t);
-        tcg_temp_free(t);
-    } /* NOP otherwise */
-    return true;
+    return gen_shifti(ctx, a, tcg_gen_shl_tl);
 }
 
 static bool trans_srli(DisasContext *ctx, arg_srli *a)
 {
-    if (a->shamt >= TARGET_LONG_BITS) {
-        return false;
-    }
-
-    if (a->rd != 0) {
-        TCGv t = tcg_temp_new();
-        gen_get_gpr(t, a->rs1);
-
-        tcg_gen_shri_tl(t, t, a->shamt);
-        gen_set_gpr(a->rd, t);
-        tcg_temp_free(t);
-    } /* NOP otherwise */
-    return true;
+    return gen_shifti(ctx, a, tcg_gen_shr_tl);
 }
 
 static bool trans_srai(DisasContext *ctx, arg_srai *a)
 {
-    if (a->shamt >= TARGET_LONG_BITS) {
-        return false;
-    }
-
-    if (a->rd != 0) {
-        TCGv t = tcg_temp_new();
-        gen_get_gpr(t, a->rs1);
-
-        tcg_gen_sari_tl(t, t, a->shamt);
-        gen_set_gpr(a->rd, t);
-        tcg_temp_free(t);
-    } /* NOP otherwise */
-    return true;
+    return gen_shifti(ctx, a, tcg_gen_sar_tl);
 }
 
 static bool trans_add(DisasContext *ctx, arg_add *a)
@@ -369,16 +332,7 @@ static bool trans_addiw(DisasContext *ctx, arg_addiw *a)
 
 static bool trans_slliw(DisasContext *ctx, arg_slliw *a)
 {
-    TCGv source1;
-    source1 = tcg_temp_new();
-    gen_get_gpr(source1, a->rs1);
-
-    tcg_gen_shli_tl(source1, source1, a->shamt);
-    tcg_gen_ext32s_tl(source1, source1);
-    gen_set_gpr(a->rd, source1);
-
-    tcg_temp_free(source1);
-    return true;
+    return gen_shiftiw(ctx, a, tcg_gen_shl_tl);
 }
 
 static bool trans_srliw(DisasContext *ctx, arg_srliw *a)
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 4333207aeff..f8a2a137f27 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -644,6 +644,49 @@ static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
     return cpu_ldl_code(env, pc);
 }
 
+static bool gen_shifti(DisasContext *ctx, arg_shift *a,
+                       void(*func)(TCGv, TCGv, TCGv))
+{
+    if (a->shamt >= TARGET_LONG_BITS) {
+        return false;
+    }
+
+    TCGv source1 = tcg_temp_new();
+    TCGv source2 = tcg_temp_new();
+
+    gen_get_gpr(source1, a->rs1);
+
+    tcg_gen_movi_tl(source2, a->shamt);
+    (*func)(source1, source1, source2);
+
+    gen_set_gpr(a->rd, source1);
+    tcg_temp_free(source1);
+    tcg_temp_free(source2);
+    return true;
+}
+
+#ifdef TARGET_RISCV64
+
+static bool gen_shiftiw(DisasContext *ctx, arg_shift *a,
+                        void(*func)(TCGv, TCGv, TCGv))
+{
+    TCGv source1 = tcg_temp_new();
+    TCGv source2 = tcg_temp_new();
+
+    gen_get_gpr(source1, a->rs1);
+    tcg_gen_movi_tl(source2, a->shamt);
+
+    (*func)(source1, source1, source2);
+    tcg_gen_ext32s_tl(source1, source1);
+
+    gen_set_gpr(a->rd, source1);
+    tcg_temp_free(source1);
+    tcg_temp_free(source2);
+    return true;
+}
+
+#endif
+
 static void gen_ctz(TCGv ret, TCGv arg1)
 {
     tcg_gen_ctzi_tl(ret, arg1, TARGET_LONG_BITS);
-- 
2.17.1

[PATCH v5 09/17] target/riscv: rvb: single-bit instructions

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/insn32-64.decode           |  8 +++
 target/riscv/insn32.decode              |  9 +++
 target/riscv/insn_trans/trans_rvb.c.inc | 90 +++++++++++++++++++++++++
 target/riscv/translate.c                | 61 +++++++++++++++++
 4 files changed, 168 insertions(+)

diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
index d28c0bcf2c1..f6c63c31b03 100644
--- a/target/riscv/insn32-64.decode
+++ b/target/riscv/insn32-64.decode
@@ -94,3 +94,11 @@ cpopw      0110000 00010 ..... 001 ..... 0011011 @r2
 
 packw      0000100 .......... 100 ..... 0111011 @r
 packuw     0100100 .......... 100 ..... 0111011 @r
+bsetw      0010100 .......... 001 ..... 0111011 @r
+bclrw      0100100 .......... 001 ..... 0111011 @r
+binvw      0110100 .......... 001 ..... 0111011 @r
+bextw      0100100 .......... 101 ..... 0111011 @r
+
+bsetiw     0010100 .......... 001 ..... 0011011 @sh5
+bclriw     0100100 .......... 001 ..... 0011011 @sh5
+binviw     0110100 .......... 001 ..... 0011011 @sh5
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 938c23088eb..64d2b057764 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -611,3 +611,12 @@ min        0000101 .......... 100 ..... 0110011 @r
 minu       0000101 .......... 101 ..... 0110011 @r
 max        0000101 .......... 110 ..... 0110011 @r
 maxu       0000101 .......... 111 ..... 0110011 @r
+bset       0010100 .......... 001 ..... 0110011 @r
+bclr       0100100 .......... 001 ..... 0110011 @r
+binv       0110100 .......... 001 ..... 0110011 @r
+bext       0100100 .......... 101 ..... 0110011 @r
+
+bseti      00101. ........... 001 ..... 0010011 @sh
+bclri      01001. ........... 001 ..... 0010011 @sh
+binvi      01101. ........... 001 ..... 0010011 @sh
+bexti      01001. ........... 101 ..... 0010011 @sh
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index 1496996a660..0c41f135dc6 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -107,6 +107,54 @@ static bool trans_sext_h(DisasContext *ctx, arg_sext_h *a)
     return gen_unary(ctx, a, tcg_gen_ext16s_tl);
 }
 
+static bool trans_bset(DisasContext *ctx, arg_bset *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shift(ctx, a, gen_bset);
+}
+
+static bool trans_bseti(DisasContext *ctx, arg_bseti *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shifti(ctx, a, gen_bset);
+}
+
+static bool trans_bclr(DisasContext *ctx, arg_bclr *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shift(ctx, a, gen_bclr);
+}
+
+static bool trans_bclri(DisasContext *ctx, arg_bclri *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shifti(ctx, a, gen_bclr);
+}
+
+static bool trans_binv(DisasContext *ctx, arg_binv *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shift(ctx, a, gen_binv);
+}
+
+static bool trans_binvi(DisasContext *ctx, arg_binvi *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shifti(ctx, a, gen_binv);
+}
+
+static bool trans_bext(DisasContext *ctx, arg_bext *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shift(ctx, a, gen_bext);
+}
+
+static bool trans_bexti(DisasContext *ctx, arg_bexti *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shifti(ctx, a, gen_bext);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
@@ -140,4 +188,46 @@ static bool trans_packuw(DisasContext *ctx, arg_packuw *a)
     return gen_arith(ctx, a, gen_packuw);
 }
 
+static bool trans_bsetw(DisasContext *ctx, arg_bsetw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftw(ctx, a, gen_bset);
+}
+
+static bool trans_bsetiw(DisasContext *ctx, arg_bsetiw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftiw(ctx, a, gen_bset);
+}
+
+static bool trans_bclrw(DisasContext *ctx, arg_bclrw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftw(ctx, a, gen_bclr);
+}
+
+static bool trans_bclriw(DisasContext *ctx, arg_bclriw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftiw(ctx, a, gen_bclr);
+}
+
+static bool trans_binvw(DisasContext *ctx, arg_binvw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftw(ctx, a, gen_binv);
+}
+
+static bool trans_binviw(DisasContext *ctx, arg_binviw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftiw(ctx, a, gen_binv);
+}
+
+static bool trans_bextw(DisasContext *ctx, arg_bextw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftw(ctx, a, gen_bext);
+}
+
 #endif
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index f8a2a137f27..28fb843a261 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -559,6 +559,48 @@ static void gen_packh(TCGv ret, TCGv arg1, TCGv arg2)
     tcg_temp_free(t);
 }
 
+static void gen_sbop_mask(TCGv ret, TCGv shamt)
+{
+    tcg_gen_movi_tl(ret, 1);
+    tcg_gen_shl_tl(ret, ret, shamt);
+}
+
+static void gen_bset(TCGv ret, TCGv arg1, TCGv shamt)
+{
+    TCGv t = tcg_temp_new();
+
+    gen_sbop_mask(t, shamt);
+    tcg_gen_or_tl(ret, arg1, t);
+
+    tcg_temp_free(t);
+}
+
+static void gen_bclr(TCGv ret, TCGv arg1, TCGv shamt)
+{
+    TCGv t = tcg_temp_new();
+
+    gen_sbop_mask(t, shamt);
+    tcg_gen_andc_tl(ret, arg1, t);
+
+    tcg_temp_free(t);
+}
+
+static void gen_binv(TCGv ret, TCGv arg1, TCGv shamt)
+{
+    TCGv t = tcg_temp_new();
+
+    gen_sbop_mask(t, shamt);
+    tcg_gen_xor_tl(ret, arg1, t);
+
+    tcg_temp_free(t);
+}
+
+static void gen_bext(TCGv ret, TCGv arg1, TCGv shamt)
+{
+    tcg_gen_shr_tl(ret, arg1, shamt);
+    tcg_gen_andi_tl(ret, ret, 1);
+}
+
 #ifdef TARGET_RISCV64
 
 static void gen_ctzw(TCGv ret, TCGv arg1)
@@ -667,6 +709,25 @@ static bool gen_shifti(DisasContext *ctx, arg_shift *a,
 
 #ifdef TARGET_RISCV64
 
+static bool gen_shiftw(DisasContext *ctx, arg_r *a,
+                       void(*func)(TCGv, TCGv, TCGv))
+{
+    TCGv source1 = tcg_temp_new();
+    TCGv source2 = tcg_temp_new();
+
+    gen_get_gpr(source1, a->rs1);
+    gen_get_gpr(source2, a->rs2);
+
+    tcg_gen_andi_tl(source2, source2, 31);
+    (*func)(source1, source1, source2);
+    tcg_gen_ext32s_tl(source1, source1);
+
+    gen_set_gpr(a->rd, source1);
+    tcg_temp_free(source1);
+    tcg_temp_free(source2);
+    return true;
+}
+
 static bool gen_shiftiw(DisasContext *ctx, arg_shift *a,
                         void(*func)(TCGv, TCGv, TCGv))
 {
-- 
2.17.1

[PATCH v5 10/17] target/riscv: rvb: shift ones

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/insn32-64.decode           |  4 +++
 target/riscv/insn32.decode              |  4 +++
 target/riscv/insn_trans/trans_rvb.c.inc | 48 +++++++++++++++++++++++++
 target/riscv/translate.c                | 14 ++++++++
 4 files changed, 70 insertions(+)

diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
index f6c63c31b03..8c3ed33077e 100644
--- a/target/riscv/insn32-64.decode
+++ b/target/riscv/insn32-64.decode
@@ -98,7 +98,11 @@ bsetw      0010100 .......... 001 ..... 0111011 @r
 bclrw      0100100 .......... 001 ..... 0111011 @r
 binvw      0110100 .......... 001 ..... 0111011 @r
 bextw      0100100 .......... 101 ..... 0111011 @r
+slow       0010000 .......... 001 ..... 0111011 @r
+srow       0010000 .......... 101 ..... 0111011 @r
 
 bsetiw     0010100 .......... 001 ..... 0011011 @sh5
 bclriw     0100100 .......... 001 ..... 0011011 @sh5
 binviw     0110100 .......... 001 ..... 0011011 @sh5
+sloiw      0010000 .......... 001 ..... 0011011 @sh5
+sroiw      0010000 .......... 101 ..... 0011011 @sh5
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 64d2b057764..0ea92312372 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -615,8 +615,12 @@ bset       0010100 .......... 001 ..... 0110011 @r
 bclr       0100100 .......... 001 ..... 0110011 @r
 binv       0110100 .......... 001 ..... 0110011 @r
 bext       0100100 .......... 101 ..... 0110011 @r
+slo        0010000 .......... 001 ..... 0110011 @r
+sro        0010000 .......... 101 ..... 0110011 @r
 
 bseti      00101. ........... 001 ..... 0010011 @sh
 bclri      01001. ........... 001 ..... 0010011 @sh
 binvi      01101. ........... 001 ..... 0010011 @sh
 bexti      01001. ........... 101 ..... 0010011 @sh
+sloi       00100. ........... 001 ..... 0010011 @sh
+sroi       00100. ........... 101 ..... 0010011 @sh
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index 0c41f135dc6..44f9f639240 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -155,6 +155,30 @@ static bool trans_bexti(DisasContext *ctx, arg_bexti *a)
     return gen_shifti(ctx, a, gen_bext);
 }
 
+static bool trans_slo(DisasContext *ctx, arg_slo *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shift(ctx, a, gen_slo);
+}
+
+static bool trans_sloi(DisasContext *ctx, arg_sloi *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shifti(ctx, a, gen_slo);
+}
+
+static bool trans_sro(DisasContext *ctx, arg_sro *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shift(ctx, a, gen_sro);
+}
+
+static bool trans_sroi(DisasContext *ctx, arg_sroi *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shifti(ctx, a, gen_sro);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
@@ -230,4 +254,28 @@ static bool trans_bextw(DisasContext *ctx, arg_bextw *a)
     return gen_shiftw(ctx, a, gen_bext);
 }
 
+static bool trans_slow(DisasContext *ctx, arg_slow *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftw(ctx, a, gen_slo);
+}
+
+static bool trans_sloiw(DisasContext *ctx, arg_sloiw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftiw(ctx, a, gen_slo);
+}
+
+static bool trans_srow(DisasContext *ctx, arg_srow *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftw(ctx, a, gen_sro);
+}
+
+static bool trans_sroiw(DisasContext *ctx, arg_sroiw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftiw(ctx, a, gen_sro);
+}
+
 #endif
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 28fb843a261..c7457553673 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -601,6 +601,20 @@ static void gen_bext(TCGv ret, TCGv arg1, TCGv shamt)
     tcg_gen_andi_tl(ret, ret, 1);
 }
 
+static void gen_slo(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    tcg_gen_not_tl(ret, arg1);
+    tcg_gen_shl_tl(ret, ret, arg2);
+    tcg_gen_not_tl(ret, ret);
+}
+
+static void gen_sro(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    tcg_gen_not_tl(ret, arg1);
+    tcg_gen_shr_tl(ret, ret, arg2);
+    tcg_gen_not_tl(ret, ret);
+}
+
 #ifdef TARGET_RISCV64
 
 static void gen_ctzw(TCGv ret, TCGv arg1)
-- 
2.17.1

[PATCH v5 11/17] target/riscv: rvb: rotate (left/right)

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/insn32-64.decode           |  3 +++
 target/riscv/insn32.decode              |  3 +++
 target/riscv/insn_trans/trans_rvb.c.inc | 36 +++++++++++++++++++++++++
 target/riscv/translate.c                | 36 +++++++++++++++++++++++++
 4 files changed, 78 insertions(+)

diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
index 8c3ed33077e..8f9ba21b352 100644
--- a/target/riscv/insn32-64.decode
+++ b/target/riscv/insn32-64.decode
@@ -100,9 +100,12 @@ binvw      0110100 .......... 001 ..... 0111011 @r
 bextw      0100100 .......... 101 ..... 0111011 @r
 slow       0010000 .......... 001 ..... 0111011 @r
 srow       0010000 .......... 101 ..... 0111011 @r
+rorw       0110000 .......... 101 ..... 0111011 @r
+rolw       0110000 .......... 001 ..... 0111011 @r
 
 bsetiw     0010100 .......... 001 ..... 0011011 @sh5
 bclriw     0100100 .......... 001 ..... 0011011 @sh5
 binviw     0110100 .......... 001 ..... 0011011 @sh5
 sloiw      0010000 .......... 001 ..... 0011011 @sh5
 sroiw      0010000 .......... 101 ..... 0011011 @sh5
+roriw      0110000 .......... 101 ..... 0011011 @sh5
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 0ea92312372..6d1b604c800 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -617,6 +617,8 @@ binv       0110100 .......... 001 ..... 0110011 @r
 bext       0100100 .......... 101 ..... 0110011 @r
 slo        0010000 .......... 001 ..... 0110011 @r
 sro        0010000 .......... 101 ..... 0110011 @r
+ror        0110000 .......... 101 ..... 0110011 @r
+rol        0110000 .......... 001 ..... 0110011 @r
 
 bseti      00101. ........... 001 ..... 0010011 @sh
 bclri      01001. ........... 001 ..... 0010011 @sh
@@ -624,3 +626,4 @@ binvi      01101. ........... 001 ..... 0010011 @sh
 bexti      01001. ........... 101 ..... 0010011 @sh
 sloi       00100. ........... 001 ..... 0010011 @sh
 sroi       00100. ........... 101 ..... 0010011 @sh
+rori       01100. ........... 101 ..... 0010011 @sh
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index 44f9f639240..8a46fde4767 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -179,6 +179,24 @@ static bool trans_sroi(DisasContext *ctx, arg_sroi *a)
     return gen_shifti(ctx, a, gen_sro);
 }
 
+static bool trans_ror(DisasContext *ctx, arg_ror *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shift(ctx, a, tcg_gen_rotr_tl);
+}
+
+static bool trans_rori(DisasContext *ctx, arg_rori *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shifti(ctx, a, tcg_gen_rotr_tl);
+}
+
+static bool trans_rol(DisasContext *ctx, arg_rol *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shift(ctx, a, tcg_gen_rotl_tl);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
@@ -278,4 +296,22 @@ static bool trans_sroiw(DisasContext *ctx, arg_sroiw *a)
     return gen_shiftiw(ctx, a, gen_sro);
 }
 
+static bool trans_rorw(DisasContext *ctx, arg_rorw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftw(ctx, a, gen_rorw);
+}
+
+static bool trans_roriw(DisasContext *ctx, arg_roriw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftiw(ctx, a, gen_rorw);
+}
+
+static bool trans_rolw(DisasContext *ctx, arg_rolw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftw(ctx, a, gen_rolw);
+}
+
 #endif
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index c7457553673..5f62fbb6964 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -653,6 +653,42 @@ static void gen_packuw(TCGv ret, TCGv arg1, TCGv arg2)
     tcg_temp_free(t);
 }
 
+static void gen_rorw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    TCGv_i32 t1 = tcg_temp_new_i32();
+    TCGv_i32 t2 = tcg_temp_new_i32();
+
+    /* truncate to 32-bits */
+    tcg_gen_trunc_tl_i32(t1, arg1);
+    tcg_gen_trunc_tl_i32(t2, arg2);
+
+    tcg_gen_rotr_i32(t1, t1, t2);
+
+    /* sign-extend 64-bits */
+    tcg_gen_ext_i32_tl(ret, t1);
+
+    tcg_temp_free_i32(t1);
+    tcg_temp_free_i32(t2);
+}
+
+static void gen_rolw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    TCGv_i32 t1 = tcg_temp_new_i32();
+    TCGv_i32 t2 = tcg_temp_new_i32();
+
+    /* truncate to 32-bits */
+    tcg_gen_trunc_tl_i32(t1, arg1);
+    tcg_gen_trunc_tl_i32(t2, arg2);
+
+    tcg_gen_rotl_i32(t1, t1, t2);
+
+    /* sign-extend 64-bits */
+    tcg_gen_ext_i32_tl(ret, t1);
+
+    tcg_temp_free_i32(t1);
+    tcg_temp_free_i32(t2);
+}
+
 #endif
 
 static bool gen_arith(DisasContext *ctx, arg_r *a,
-- 
2.17.1

[PATCH v5 12/17] target/riscv: rvb: generalized reverse

[frank.chang]

From: Frank Chang <frank.chang@sifive.com>

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/bitmanip_helper.c          | 71 +++++++++++++++++++++++++
 target/riscv/helper.h                   |  7 +++
 target/riscv/insn32-64.decode           |  2 +
 target/riscv/insn32.decode              |  2 +
 target/riscv/insn_trans/trans_rvb.c.inc | 29 ++++++++++
 target/riscv/meson.build                |  1 +
 target/riscv/translate.c                | 28 ++++++++++
 7 files changed, 140 insertions(+)
 create mode 100644 target/riscv/bitmanip_helper.c

diff --git a/target/riscv/bitmanip_helper.c b/target/riscv/bitmanip_helper.c
new file mode 100644
index 00000000000..1d3235bc0d6
--- /dev/null
+++ b/target/riscv/bitmanip_helper.c
@@ -0,0 +1,71 @@
+/*
+ * RISC-V Bitmanip Extension Helpers for QEMU.
+ *
+ * Copyright (c) 2020 Kito Cheng, kito.cheng@sifive.com
+ * Copyright (c) 2020 Frank Chang, frank.chang@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/>.
+ */
+
+#include "qemu/osdep.h"
+#include "qemu/host-utils.h"
+#include "exec/exec-all.h"
+#include "exec/helper-proto.h"
+#include "tcg/tcg.h"
+
+static const uint64_t adjacent_masks[] = {
+    dup_const(MO_8, 0x55),
+    dup_const(MO_8, 0x33),
+    dup_const(MO_8, 0x0f),
+    dup_const(MO_16, 0xff),
+    dup_const(MO_32, 0xffff),
+#ifdef TARGET_RISCV64
+    UINT32_MAX
+#endif
+};
+
+static inline target_ulong do_swap(target_ulong x, uint64_t mask, int shift)
+{
+    return ((x & mask) << shift) | ((x & ~mask) >> shift);
+}
+
+static target_ulong do_grev(target_ulong rs1,
+                            target_ulong rs2,
+                            int bits)
+{
+    target_ulong x = rs1;
+    int i, shift;
+
+    for (i = 0, shift = 1; shift < bits; i++, shift <<= 1) {
+        if (rs2 & shift) {
+            x = do_swap(x, adjacent_masks[i], shift);
+        }
+    }
+
+    return x;
+}
+
+target_ulong HELPER(grev)(target_ulong rs1, target_ulong rs2)
+{
+    return do_grev(rs1, rs2, TARGET_LONG_BITS);
+}
+
+/* RV64-only instruction */
+#ifdef TARGET_RISCV64
+
+target_ulong HELPER(grevw)(target_ulong rs1, target_ulong rs2)
+{
+    return do_grev(rs1, rs2, 32);
+}
+
+#endif
diff --git a/target/riscv/helper.h b/target/riscv/helper.h
index e3f3f41e891..db8b770f1aa 100644
--- a/target/riscv/helper.h
+++ b/target/riscv/helper.h
@@ -58,6 +58,13 @@ DEF_HELPER_FLAGS_2(fcvt_d_l, TCG_CALL_NO_RWG, i64, env, i64)
 DEF_HELPER_FLAGS_2(fcvt_d_lu, TCG_CALL_NO_RWG, i64, env, i64)
 DEF_HELPER_FLAGS_1(fclass_d, TCG_CALL_NO_RWG_SE, tl, i64)
 
+/* Bitmanip */
+DEF_HELPER_FLAGS_2(grev, TCG_CALL_NO_RWG_SE, tl, tl, tl)
+
+#if defined(TARGET_RISCV64)
+DEF_HELPER_FLAGS_2(grevw, TCG_CALL_NO_RWG_SE, tl, tl, tl)
+#endif
+
 /* Special functions */
 DEF_HELPER_3(csrrw, tl, env, tl, tl)
 DEF_HELPER_4(csrrs, tl, env, tl, tl, tl)
diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
index 8f9ba21b352..38ceadd4553 100644
--- a/target/riscv/insn32-64.decode
+++ b/target/riscv/insn32-64.decode
@@ -102,6 +102,7 @@ slow       0010000 .......... 001 ..... 0111011 @r
 srow       0010000 .......... 101 ..... 0111011 @r
 rorw       0110000 .......... 101 ..... 0111011 @r
 rolw       0110000 .......... 001 ..... 0111011 @r
+grevw      0110100 .......... 101 ..... 0111011 @r
 
 bsetiw     0010100 .......... 001 ..... 0011011 @sh5
 bclriw     0100100 .......... 001 ..... 0011011 @sh5
@@ -109,3 +110,4 @@ binviw     0110100 .......... 001 ..... 0011011 @sh5
 sloiw      0010000 .......... 001 ..... 0011011 @sh5
 sroiw      0010000 .......... 101 ..... 0011011 @sh5
 roriw      0110000 .......... 101 ..... 0011011 @sh5
+greviw     0110100 .......... 101 ..... 0011011 @sh5
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 6d1b604c800..fa4bba4f0ee 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -619,6 +619,7 @@ slo        0010000 .......... 001 ..... 0110011 @r
 sro        0010000 .......... 101 ..... 0110011 @r
 ror        0110000 .......... 101 ..... 0110011 @r
 rol        0110000 .......... 001 ..... 0110011 @r
+grev       0110100 .......... 101 ..... 0110011 @r
 
 bseti      00101. ........... 001 ..... 0010011 @sh
 bclri      01001. ........... 001 ..... 0010011 @sh
@@ -627,3 +628,4 @@ bexti      01001. ........... 101 ..... 0010011 @sh
 sloi       00100. ........... 001 ..... 0010011 @sh
 sroi       00100. ........... 101 ..... 0010011 @sh
 rori       01100. ........... 101 ..... 0010011 @sh
+grevi      01101. ........... 101 ..... 0010011 @sh
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index 8a46fde4767..286643cd183 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -197,6 +197,23 @@ static bool trans_rol(DisasContext *ctx, arg_rol *a)
     return gen_shift(ctx, a, tcg_gen_rotl_tl);
 }
 
+static bool trans_grev(DisasContext *ctx, arg_grev *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shift(ctx, a, gen_helper_grev);
+}
+
+static bool trans_grevi(DisasContext *ctx, arg_grevi *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+
+    if (a->shamt >= TARGET_LONG_BITS) {
+        return false;
+    }
+
+    return gen_grevi(ctx, a);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
@@ -314,4 +331,16 @@ static bool trans_rolw(DisasContext *ctx, arg_rolw *a)
     return gen_shiftw(ctx, a, gen_rolw);
 }
 
+static bool trans_grevw(DisasContext *ctx, arg_grevw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftw(ctx, a, gen_grevw);
+}
+
+static bool trans_greviw(DisasContext *ctx, arg_greviw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftiw(ctx, a, gen_grevw);
+}
+
 #endif
diff --git a/target/riscv/meson.build b/target/riscv/meson.build
index 88ab8506821..f7f921ab491 100644
--- a/target/riscv/meson.build
+++ b/target/riscv/meson.build
@@ -21,6 +21,7 @@ riscv_ss.add(files(
   'gdbstub.c',
   'op_helper.c',
   'vector_helper.c',
+  'bitmanip_helper.c',
   'translate.c',
 ))
 
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 5f62fbb6964..e47bae3ab2b 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -615,6 +615,28 @@ static void gen_sro(TCGv ret, TCGv arg1, TCGv arg2)
     tcg_gen_not_tl(ret, ret);
 }
 
+static bool gen_grevi(DisasContext *ctx, arg_grevi *a)
+{
+    TCGv source1 = tcg_temp_new();
+    TCGv source2;
+
+    gen_get_gpr(source1, a->rs1);
+
+    if (a->shamt == (TARGET_LONG_BITS - 8)) {
+        /* rev8, byte swaps */
+        tcg_gen_bswap_tl(source1, source1);
+    } else {
+        source2 = tcg_temp_new();
+        tcg_gen_movi_tl(source2, a->shamt);
+        gen_helper_grev(source1, source1, source2);
+        tcg_temp_free(source2);
+    }
+
+    gen_set_gpr(a->rd, source1);
+    tcg_temp_free(source1);
+    return true;
+}
+
 #ifdef TARGET_RISCV64
 
 static void gen_ctzw(TCGv ret, TCGv arg1)
@@ -689,6 +711,12 @@ static void gen_rolw(TCGv ret, TCGv arg1, TCGv arg2)
     tcg_temp_free_i32(t2);
 }
 
+static void gen_grevw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    tcg_gen_ext32u_tl(arg1, arg1);
+    gen_helper_grev(ret, arg1, arg2);
+}
+
 #endif
 
 static bool gen_arith(DisasContext *ctx, arg_r *a,
-- 
2.17.1

[PATCH v5 13/17] target/riscv: rvb: generalized or-combine

[frank.chang]

From: Frank Chang <frank.chang@sifive.com>

Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/bitmanip_helper.c          | 31 +++++++++++++++++++++++++
 target/riscv/helper.h                   |  2 ++
 target/riscv/insn32-64.decode           |  2 ++
 target/riscv/insn32.decode              |  2 ++
 target/riscv/insn_trans/trans_rvb.c.inc | 24 +++++++++++++++++++
 target/riscv/translate.c                |  6 +++++
 6 files changed, 67 insertions(+)

diff --git a/target/riscv/bitmanip_helper.c b/target/riscv/bitmanip_helper.c
index 1d3235bc0d6..389b52eccd9 100644
--- a/target/riscv/bitmanip_helper.c
+++ b/target/riscv/bitmanip_helper.c
@@ -69,3 +69,34 @@ target_ulong HELPER(grevw)(target_ulong rs1, target_ulong rs2)
 }
 
 #endif
+
+static target_ulong do_gorc(target_ulong rs1,
+                            target_ulong rs2,
+                            int bits)
+{
+    target_ulong x = rs1;
+    int i, shift;
+
+    for (i = 0, shift = 1; shift < bits; i++, shift <<= 1) {
+        if (rs2 & shift) {
+            x |= do_swap(x, adjacent_masks[i], shift);
+        }
+    }
+
+    return x;
+}
+
+target_ulong HELPER(gorc)(target_ulong rs1, target_ulong rs2)
+{
+    return do_gorc(rs1, rs2, TARGET_LONG_BITS);
+}
+
+/* RV64-only instruction */
+#ifdef TARGET_RISCV64
+
+target_ulong HELPER(gorcw)(target_ulong rs1, target_ulong rs2)
+{
+    return do_gorc(rs1, rs2, 32);
+}
+
+#endif
diff --git a/target/riscv/helper.h b/target/riscv/helper.h
index db8b770f1aa..7ddaea61798 100644
--- a/target/riscv/helper.h
+++ b/target/riscv/helper.h
@@ -60,9 +60,11 @@ DEF_HELPER_FLAGS_1(fclass_d, TCG_CALL_NO_RWG_SE, tl, i64)
 
 /* Bitmanip */
 DEF_HELPER_FLAGS_2(grev, TCG_CALL_NO_RWG_SE, tl, tl, tl)
+DEF_HELPER_FLAGS_2(gorc, TCG_CALL_NO_RWG_SE, tl, tl, tl)
 
 #if defined(TARGET_RISCV64)
 DEF_HELPER_FLAGS_2(grevw, TCG_CALL_NO_RWG_SE, tl, tl, tl)
+DEF_HELPER_FLAGS_2(gorcw, TCG_CALL_NO_RWG_SE, tl, tl, tl)
 #endif
 
 /* Special functions */
diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
index 38ceadd4553..894db5e3abf 100644
--- a/target/riscv/insn32-64.decode
+++ b/target/riscv/insn32-64.decode
@@ -103,6 +103,7 @@ srow       0010000 .......... 101 ..... 0111011 @r
 rorw       0110000 .......... 101 ..... 0111011 @r
 rolw       0110000 .......... 001 ..... 0111011 @r
 grevw      0110100 .......... 101 ..... 0111011 @r
+gorcw      0010100 .......... 101 ..... 0111011 @r
 
 bsetiw     0010100 .......... 001 ..... 0011011 @sh5
 bclriw     0100100 .......... 001 ..... 0011011 @sh5
@@ -111,3 +112,4 @@ sloiw      0010000 .......... 001 ..... 0011011 @sh5
 sroiw      0010000 .......... 101 ..... 0011011 @sh5
 roriw      0110000 .......... 101 ..... 0011011 @sh5
 greviw     0110100 .......... 101 ..... 0011011 @sh5
+gorciw     0010100 .......... 101 ..... 0011011 @sh5
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index fa4bba4f0ee..0756ea5cc28 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -620,6 +620,7 @@ sro        0010000 .......... 101 ..... 0110011 @r
 ror        0110000 .......... 101 ..... 0110011 @r
 rol        0110000 .......... 001 ..... 0110011 @r
 grev       0110100 .......... 101 ..... 0110011 @r
+gorc       0010100 .......... 101 ..... 0110011 @r
 
 bseti      00101. ........... 001 ..... 0010011 @sh
 bclri      01001. ........... 001 ..... 0010011 @sh
@@ -629,3 +630,4 @@ sloi       00100. ........... 001 ..... 0010011 @sh
 sroi       00100. ........... 101 ..... 0010011 @sh
 rori       01100. ........... 101 ..... 0010011 @sh
 grevi      01101. ........... 101 ..... 0010011 @sh
+gorci      00101. ........... 101 ..... 0010011 @sh
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index 286643cd183..a4181dbf0de 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -214,6 +214,18 @@ static bool trans_grevi(DisasContext *ctx, arg_grevi *a)
     return gen_grevi(ctx, a);
 }
 
+static bool trans_gorc(DisasContext *ctx, arg_gorc *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shift(ctx, a, gen_helper_gorc);
+}
+
+static bool trans_gorci(DisasContext *ctx, arg_gorci *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shifti(ctx, a, gen_helper_gorc);
+}
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
@@ -343,4 +355,16 @@ static bool trans_greviw(DisasContext *ctx, arg_greviw *a)
     return gen_shiftiw(ctx, a, gen_grevw);
 }
 
+static bool trans_gorcw(DisasContext *ctx, arg_gorcw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftw(ctx, a, gen_gorcw);
+}
+
+static bool trans_gorciw(DisasContext *ctx, arg_gorciw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_shiftiw(ctx, a, gen_gorcw);
+}
+
 #endif
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index e47bae3ab2b..e1e8315ccbd 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -717,6 +717,12 @@ static void gen_grevw(TCGv ret, TCGv arg1, TCGv arg2)
     gen_helper_grev(ret, arg1, arg2);
 }
 
+static void gen_gorcw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    tcg_gen_ext32u_tl(arg1, arg1);
+    gen_helper_gorcw(ret, arg1, arg2);
+}
+
 #endif
 
 static bool gen_arith(DisasContext *ctx, arg_r *a,
-- 
2.17.1

[PATCH v5 14/17] target/riscv: rvb: address calculation

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/insn32-64.decode           |  3 +++
 target/riscv/insn32.decode              |  3 +++
 target/riscv/insn_trans/trans_rvb.c.inc | 23 ++++++++++++++++++
 target/riscv/translate.c                | 32 +++++++++++++++++++++++++
 4 files changed, 61 insertions(+)

diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
index 894db5e3abf..2f80b0c07ae 100644
--- a/target/riscv/insn32-64.decode
+++ b/target/riscv/insn32-64.decode
@@ -104,6 +104,9 @@ rorw       0110000 .......... 101 ..... 0111011 @r
 rolw       0110000 .......... 001 ..... 0111011 @r
 grevw      0110100 .......... 101 ..... 0111011 @r
 gorcw      0010100 .......... 101 ..... 0111011 @r
+sh1add_uw  0010000 .......... 010 ..... 0111011 @r
+sh2add_uw  0010000 .......... 100 ..... 0111011 @r
+sh3add_uw  0010000 .......... 110 ..... 0111011 @r
 
 bsetiw     0010100 .......... 001 ..... 0011011 @sh5
 bclriw     0100100 .......... 001 ..... 0011011 @sh5
diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
index 0756ea5cc28..b90c1c0a350 100644
--- a/target/riscv/insn32.decode
+++ b/target/riscv/insn32.decode
@@ -621,6 +621,9 @@ ror        0110000 .......... 101 ..... 0110011 @r
 rol        0110000 .......... 001 ..... 0110011 @r
 grev       0110100 .......... 101 ..... 0110011 @r
 gorc       0010100 .......... 101 ..... 0110011 @r
+sh1add     0010000 .......... 010 ..... 0110011 @r
+sh2add     0010000 .......... 100 ..... 0110011 @r
+sh3add     0010000 .......... 110 ..... 0110011 @r
 
 bseti      00101. ........... 001 ..... 0010011 @sh
 bclri      01001. ........... 001 ..... 0010011 @sh
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index a4181dbf0de..ca987f2705f 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -226,6 +226,17 @@ static bool trans_gorci(DisasContext *ctx, arg_gorci *a)
     return gen_shifti(ctx, a, gen_helper_gorc);
 }
 
+#define GEN_TRANS_SHADD(SHAMT)                                             \
+static bool trans_sh##SHAMT##add(DisasContext *ctx, arg_sh##SHAMT##add *a) \
+{                                                                          \
+    REQUIRE_EXT(ctx, RVB);                                                 \
+    return gen_arith(ctx, a, gen_sh##SHAMT##add);                          \
+}
+
+GEN_TRANS_SHADD(1)
+GEN_TRANS_SHADD(2)
+GEN_TRANS_SHADD(3)
+
 /* RV64-only instructions */
 #ifdef TARGET_RISCV64
 
@@ -367,4 +378,16 @@ static bool trans_gorciw(DisasContext *ctx, arg_gorciw *a)
     return gen_shiftiw(ctx, a, gen_gorcw);
 }
 
+#define GEN_TRANS_SHADD_UW(SHAMT)                             \
+static bool trans_sh##SHAMT##add_uw(DisasContext *ctx,        \
+                                    arg_sh##SHAMT##add_uw *a) \
+{                                                             \
+    REQUIRE_EXT(ctx, RVB);                                    \
+    return gen_arith(ctx, a, gen_sh##SHAMT##add_uw);          \
+}
+
+GEN_TRANS_SHADD_UW(1)
+GEN_TRANS_SHADD_UW(2)
+GEN_TRANS_SHADD_UW(3)
+
 #endif
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index e1e8315ccbd..7e92cd87851 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -637,6 +637,21 @@ static bool gen_grevi(DisasContext *ctx, arg_grevi *a)
     return true;
 }
 
+#define GEN_SHADD(SHAMT)                                       \
+static void gen_sh##SHAMT##add(TCGv ret, TCGv arg1, TCGv arg2) \
+{                                                              \
+    TCGv t = tcg_temp_new();                                   \
+                                                               \
+    tcg_gen_shli_tl(t, arg1, SHAMT);                           \
+    tcg_gen_add_tl(ret, t, arg2);                              \
+                                                               \
+    tcg_temp_free(t);                                          \
+}
+
+GEN_SHADD(1)
+GEN_SHADD(2)
+GEN_SHADD(3)
+
 #ifdef TARGET_RISCV64
 
 static void gen_ctzw(TCGv ret, TCGv arg1)
@@ -723,6 +738,23 @@ static void gen_gorcw(TCGv ret, TCGv arg1, TCGv arg2)
     gen_helper_gorcw(ret, arg1, arg2);
 }
 
+#define GEN_SHADD_UW(SHAMT)                                       \
+static void gen_sh##SHAMT##add_uw(TCGv ret, TCGv arg1, TCGv arg2) \
+{                                                                 \
+    TCGv t = tcg_temp_new();                                      \
+                                                                  \
+    tcg_gen_ext32u_tl(t, arg1);                                   \
+                                                                  \
+    tcg_gen_shli_tl(t, t, SHAMT);                                 \
+    tcg_gen_add_tl(ret, t, arg2);                                 \
+                                                                  \
+    tcg_temp_free(t);                                             \
+}
+
+GEN_SHADD_UW(1)
+GEN_SHADD_UW(2)
+GEN_SHADD_UW(3)
+
 #endif
 
 static bool gen_arith(DisasContext *ctx, arg_r *a,
-- 
2.17.1

[PATCH v5 15/17] target/riscv: rvb: add/shift with prefix zero-extend

[frank.chang]

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

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/insn32-64.decode           |  3 +++
 target/riscv/insn_trans/trans_rvb.c.inc | 24 ++++++++++++++++++++++++
 target/riscv/translate.c                |  6 ++++++
 3 files changed, 33 insertions(+)

diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
index 2f80b0c07ae..01b28718af5 100644
--- a/target/riscv/insn32-64.decode
+++ b/target/riscv/insn32-64.decode
@@ -107,6 +107,7 @@ gorcw      0010100 .......... 101 ..... 0111011 @r
 sh1add_uw  0010000 .......... 010 ..... 0111011 @r
 sh2add_uw  0010000 .......... 100 ..... 0111011 @r
 sh3add_uw  0010000 .......... 110 ..... 0111011 @r
+add_uw     0000100 .......... 000 ..... 0111011 @r
 
 bsetiw     0010100 .......... 001 ..... 0011011 @sh5
 bclriw     0100100 .......... 001 ..... 0011011 @sh5
@@ -116,3 +117,5 @@ sroiw      0010000 .......... 101 ..... 0011011 @sh5
 roriw      0110000 .......... 101 ..... 0011011 @sh5
 greviw     0110100 .......... 101 ..... 0011011 @sh5
 gorciw     0010100 .......... 101 ..... 0011011 @sh5
+
+slli_uw    00001. ........... 001 ..... 0011011 @sh
diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index ca987f2705f..d69bda2f7b3 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -390,4 +390,28 @@ GEN_TRANS_SHADD_UW(1)
 GEN_TRANS_SHADD_UW(2)
 GEN_TRANS_SHADD_UW(3)
 
+static bool trans_add_uw(DisasContext *ctx, arg_add_uw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+    return gen_arith(ctx, a, gen_add_uw);
+}
+
+static bool trans_slli_uw(DisasContext *ctx, arg_slli_uw *a)
+{
+    REQUIRE_EXT(ctx, RVB);
+
+    TCGv source1 = tcg_temp_new();
+    gen_get_gpr(source1, a->rs1);
+
+    if (a->shamt < 32) {
+        tcg_gen_deposit_z_i64(source1, source1, a->shamt, 32);
+    } else {
+        tcg_gen_shli_i64(source1, source1, a->shamt);
+    }
+
+    gen_set_gpr(a->rd, source1);
+    tcg_temp_free(source1);
+    return true;
+}
+
 #endif
diff --git a/target/riscv/translate.c b/target/riscv/translate.c
index 7e92cd87851..764e8f8cb0d 100644
--- a/target/riscv/translate.c
+++ b/target/riscv/translate.c
@@ -755,6 +755,12 @@ GEN_SHADD_UW(1)
 GEN_SHADD_UW(2)
 GEN_SHADD_UW(3)
 
+static void gen_add_uw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    tcg_gen_ext32u_tl(arg1, arg1);
+    tcg_gen_add_tl(ret, arg1, arg2);
+}
+
 #endif
 
 static bool gen_arith(DisasContext *ctx, arg_r *a,
-- 
2.17.1

[PATCH v5 16/17] target/riscv: rvb: support and turn on B-extension from command line

[frank.chang]

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

B-extension is default off, use cpu rv32 or rv64 with x-b=true to
enable B-extension.

Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
Signed-off-by: Frank Chang <frank.chang@sifive.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
---
 target/riscv/cpu.c | 4 ++++
 target/riscv/cpu.h | 2 ++
 2 files changed, 6 insertions(+)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 7d6ed80f6b6..8464a152d14 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -473,6 +473,9 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
         if (cpu->cfg.ext_h) {
             target_misa |= RVH;
         }
+        if (cpu->cfg.ext_b) {
+            target_misa |= RVB;
+        }
         if (cpu->cfg.ext_v) {
             target_misa |= RVV;
             if (!is_power_of_2(cpu->cfg.vlen)) {
@@ -543,6 +546,7 @@ static Property riscv_cpu_properties[] = {
     DEFINE_PROP_BOOL("s", RISCVCPU, cfg.ext_s, true),
     DEFINE_PROP_BOOL("u", RISCVCPU, cfg.ext_u, true),
     /* This is experimental so mark with 'x-' */
+    DEFINE_PROP_BOOL("x-b", RISCVCPU, cfg.ext_b, false),
     DEFINE_PROP_BOOL("x-h", RISCVCPU, cfg.ext_h, false),
     DEFINE_PROP_BOOL("x-v", RISCVCPU, cfg.ext_v, false),
     DEFINE_PROP_BOOL("Counters", RISCVCPU, cfg.ext_counters, true),
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 0a33d387ba8..97073bb8e27 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -72,6 +72,7 @@
 #define RVS RV('S')
 #define RVU RV('U')
 #define RVH RV('H')
+#define RVB RV('B')
 
 /* S extension denotes that Supervisor mode exists, however it is possible
    to have a core that support S mode but does not have an MMU and there
@@ -288,6 +289,7 @@ struct RISCVCPU {
         bool ext_f;
         bool ext_d;
         bool ext_c;
+        bool ext_b;
         bool ext_s;
         bool ext_u;
         bool ext_h;
-- 
2.17.1

[PATCH v5 17/17] target/riscv: rvb: add b-ext version cpu option

[frank.chang]

From: Frank Chang <frank.chang@sifive.com>

Default b-ext version is v0.93.

Signed-off-by: Frank Chang <frank.chang@sifive.com>
---
 target/riscv/cpu.c | 23 +++++++++++++++++++++++
 target/riscv/cpu.h |  3 +++
 2 files changed, 26 insertions(+)

diff --git a/target/riscv/cpu.c b/target/riscv/cpu.c
index 8464a152d14..b76c3c07c5f 100644
--- a/target/riscv/cpu.c
+++ b/target/riscv/cpu.c
@@ -127,6 +127,11 @@ static void set_priv_version(CPURISCVState *env, int priv_ver)
     env->priv_ver = priv_ver;
 }
 
+static void set_bext_version(CPURISCVState *env, int bext_ver)
+{
+    env->bext_ver = bext_ver;
+}
+
 static void set_vext_version(CPURISCVState *env, int vext_ver)
 {
     env->vext_ver = vext_ver;
@@ -380,6 +385,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
     CPURISCVState *env = &cpu->env;
     RISCVCPUClass *mcc = RISCV_CPU_GET_CLASS(dev);
     int priv_version = PRIV_VERSION_1_11_0;
+    int bext_version = BEXT_VERSION_0_93_0;
     int vext_version = VEXT_VERSION_0_07_1;
     target_ulong target_misa = env->misa;
     Error *local_err = NULL;
@@ -404,6 +410,7 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
     }
 
     set_priv_version(env, priv_version);
+    set_bext_version(env, bext_version);
     set_vext_version(env, vext_version);
 
     if (cpu->cfg.mmu) {
@@ -475,6 +482,21 @@ static void riscv_cpu_realize(DeviceState *dev, Error **errp)
         }
         if (cpu->cfg.ext_b) {
             target_misa |= RVB;
+
+            if (cpu->cfg.bext_spec) {
+                if (!g_strcmp0(cpu->cfg.bext_spec, "v0.93")) {
+                    bext_version = BEXT_VERSION_0_93_0;
+                } else {
+                    error_setg(errp,
+                           "Unsupported bitmanip spec version '%s'",
+                           cpu->cfg.bext_spec);
+                    return;
+                }
+            } else {
+                qemu_log("bitmanip version is not specified, "
+                         "use the default value v0.93\n");
+            }
+            set_bext_version(env, bext_version);
         }
         if (cpu->cfg.ext_v) {
             target_misa |= RVV;
@@ -553,6 +575,7 @@ static Property riscv_cpu_properties[] = {
     DEFINE_PROP_BOOL("Zifencei", RISCVCPU, cfg.ext_ifencei, true),
     DEFINE_PROP_BOOL("Zicsr", RISCVCPU, cfg.ext_icsr, true),
     DEFINE_PROP_STRING("priv_spec", RISCVCPU, cfg.priv_spec),
+    DEFINE_PROP_STRING("bext_spec", RISCVCPU, cfg.bext_spec),
     DEFINE_PROP_STRING("vext_spec", RISCVCPU, cfg.vext_spec),
     DEFINE_PROP_UINT16("vlen", RISCVCPU, cfg.vlen, 128),
     DEFINE_PROP_UINT16("elen", RISCVCPU, cfg.elen, 64),
diff --git a/target/riscv/cpu.h b/target/riscv/cpu.h
index 97073bb8e27..56de8cb5edd 100644
--- a/target/riscv/cpu.h
+++ b/target/riscv/cpu.h
@@ -87,6 +87,7 @@ enum {
 #define PRIV_VERSION_1_10_0 0x00011000
 #define PRIV_VERSION_1_11_0 0x00011100
 
+#define BEXT_VERSION_0_93_0 0x00009300
 #define VEXT_VERSION_0_07_1 0x00000701
 
 enum {
@@ -134,6 +135,7 @@ struct CPURISCVState {
     target_ulong guest_phys_fault_addr;
 
     target_ulong priv_ver;
+    target_ulong bext_ver;
     target_ulong vext_ver;
     target_ulong misa;
     target_ulong misa_mask;
@@ -300,6 +302,7 @@ struct RISCVCPU {
 
         char *priv_spec;
         char *user_spec;
+        char *bext_spec;
         char *vext_spec;
         uint16_t vlen;
         uint16_t elen;
-- 
2.17.1

Re: [PATCH v5 02/17] target/riscv: rvb: count leading/trailing zeros

[Alistair Francis]

On Wed, Apr 21, 2021 at 2:14 PM <frank.chang@sifive.com> wrote:
>
> From: Kito Cheng <kito.cheng@sifive.com>
>
> Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
> Signed-off-by: Frank Chang <frank.chang@sifive.com>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> ---
>  target/riscv/insn32-64.decode           |  4 +++
>  target/riscv/insn32.decode              |  7 +++-
>  target/riscv/insn_trans/trans_rvb.c.inc | 47 +++++++++++++++++++++++++
>  target/riscv/translate.c                | 42 ++++++++++++++++++++++
>  4 files changed, 99 insertions(+), 1 deletion(-)
>  create mode 100644 target/riscv/insn_trans/trans_rvb.c.inc
>
> diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
> index 8157dee8b7c..f4c42720fc7 100644
> --- a/target/riscv/insn32-64.decode
> +++ b/target/riscv/insn32-64.decode
> @@ -86,3 +86,7 @@ fmv_d_x    1111001  00000 ..... 000 ..... 1010011 @r2
>  hlv_wu    0110100  00001   ..... 100 ..... 1110011 @r2
>  hlv_d     0110110  00000   ..... 100 ..... 1110011 @r2
>  hsv_d     0110111  .....   ..... 100 00000 1110011 @r2_s
> +
> +# *** RV64B Standard Extension (in addition to RV32B) ***
> +clzw       0110000 00000 ..... 001 ..... 0011011 @r2
> +ctzw       0110000 00001 ..... 001 ..... 0011011 @r2
> diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
> index 3823b3ea800..8fe838cf0d0 100644
> --- a/target/riscv/insn32.decode
> +++ b/target/riscv/insn32.decode
> @@ -40,6 +40,7 @@
>  &i    imm rs1 rd
>  &j    imm rd
>  &r    rd rs1 rs2
> +&r2   rd rs1
>  &s    imm rs1 rs2
>  &u    imm rd
>  &shift     shamt rs1 rd
> @@ -67,7 +68,7 @@
>  @r4_rm   ..... ..  ..... ..... ... ..... ....... %rs3 %rs2 %rs1 %rm %rd
>  @r_rm    .......   ..... ..... ... ..... ....... %rs2 %rs1 %rm %rd
>  @r2_rm   .......   ..... ..... ... ..... ....... %rs1 %rm %rd
> -@r2      .......   ..... ..... ... ..... ....... %rs1 %rd
> +@r2      .......   ..... ..... ... ..... ....... &r2 %rs1 %rd
>  @r2_nfvm ... ... vm:1 ..... ..... ... ..... ....... &r2nfvm %nf %rs1 %rd
>  @r2_vm   ...... vm:1 ..... ..... ... ..... ....... &rmr %rs2 %rd
>  @r1_vm   ...... vm:1 ..... ..... ... ..... ....... %rd
> @@ -592,3 +593,7 @@ vcompress_vm    010111 - ..... ..... 010 ..... 1010111 @r
>
>  vsetvli         0 ........... ..... 111 ..... 1010111  @r2_zimm
>  vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
> +
> +# *** RV32B Standard Extension ***
> +clz        011000 000000 ..... 001 ..... 0010011 @r2
> +ctz        011000 000001 ..... 001 ..... 0010011 @r2
> diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
> new file mode 100644
> index 00000000000..76788c2f353
> --- /dev/null
> +++ b/target/riscv/insn_trans/trans_rvb.c.inc
> @@ -0,0 +1,47 @@
> +/*
> + * RISC-V translation routines for the RVB Standard Extension.
> + *
> + * Copyright (c) 2020 Kito Cheng, kito.cheng@sifive.com
> + * Copyright (c) 2020 Frank Chang, frank.chang@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/>.
> + */
> +
> +static bool trans_clz(DisasContext *ctx, arg_clz *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_unary(ctx, a, gen_clz);
> +}
> +
> +static bool trans_ctz(DisasContext *ctx, arg_ctz *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_unary(ctx, a, gen_ctz);
> +}
> +
> +/* RV64-only instructions */
> +#ifdef TARGET_RISCV64
> +
> +static bool trans_clzw(DisasContext *ctx, arg_clzw *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_unary(ctx, a, gen_clzw);
> +}
> +
> +static bool trans_ctzw(DisasContext *ctx, arg_ctzw *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_unary(ctx, a, gen_ctzw);
> +}
> +
> +#endif
> diff --git a/target/riscv/translate.c b/target/riscv/translate.c
> index 2f9f5ccc621..4648c422f42 100644
> --- a/target/riscv/translate.c
> +++ b/target/riscv/translate.c
> @@ -536,6 +536,23 @@ static bool gen_arith_div_uw(DisasContext *ctx, arg_r *a,
>
>  #endif
>
> +#ifdef TARGET_RISCV64

Thanks for the patches!

Unfortunately this will need to be rebased and updated. We don't want
any more #ifdef's on the RISC-V xlen. The idea is to make the XLEN not
just a compile time constant.

The latest riscv-to-apply.next tree has changes to allow you to do
this. See this commit for what this will look like:
https://github.com/alistair23/qemu/commit/4965ae3f6f3838e651d1a33050b15b4ca3d822a0

The changes should be in master after the 6.0 release.

Alistair

> +
> +static void gen_ctzw(TCGv ret, TCGv arg1)
> +{
> +    tcg_gen_ori_i64(ret, arg1, MAKE_64BIT_MASK(32, 32));
> +    tcg_gen_ctzi_i64(ret, ret, 64);
> +}
> +
> +static void gen_clzw(TCGv ret, TCGv arg1)
> +{
> +    tcg_gen_ext32u_i64(ret, arg1);
> +    tcg_gen_clzi_i64(ret, ret, 64);
> +    tcg_gen_subi_i64(ret, ret, 32);
> +}
> +
> +#endif
> +
>  static bool gen_arith(DisasContext *ctx, arg_r *a,
>                        void(*func)(TCGv, TCGv, TCGv))
>  {
> @@ -581,6 +598,30 @@ static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
>      return cpu_ldl_code(env, pc);
>  }
>
> +static void gen_ctz(TCGv ret, TCGv arg1)
> +{
> +    tcg_gen_ctzi_tl(ret, arg1, TARGET_LONG_BITS);
> +}
> +
> +static void gen_clz(TCGv ret, TCGv arg1)
> +{
> +    tcg_gen_clzi_tl(ret, arg1, TARGET_LONG_BITS);
> +}
> +
> +static bool gen_unary(DisasContext *ctx, arg_r2 *a,
> +                      void(*func)(TCGv, TCGv))
> +{
> +    TCGv source = tcg_temp_new();
> +
> +    gen_get_gpr(source, a->rs1);
> +
> +    (*func)(source, source);
> +
> +    gen_set_gpr(a->rd, source);
> +    tcg_temp_free(source);
> +    return true;
> +}
> +
>  /* Include insn module translation function */
>  #include "insn_trans/trans_rvi.c.inc"
>  #include "insn_trans/trans_rvm.c.inc"
> @@ -589,6 +630,7 @@ static uint32_t opcode_at(DisasContextBase *dcbase, target_ulong pc)
>  #include "insn_trans/trans_rvd.c.inc"
>  #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_privileged.c.inc"
>
>  /* Include the auto-generated decoder for 16 bit insn */
> --
> 2.17.1
>
>

Re: [PATCH v5 03/17] target/riscv: rvb: count bits set

[Alistair Francis]

On Wed, Apr 21, 2021 at 2:18 PM <frank.chang@sifive.com> wrote:
>
> From: Frank Chang <frank.chang@sifive.com>
>
> Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> Signed-off-by: Frank Chang <frank.chang@sifive.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/riscv/insn32-64.decode           |  1 +
>  target/riscv/insn32.decode              |  1 +
>  target/riscv/insn_trans/trans_rvb.c.inc | 12 ++++++++++++
>  target/riscv/translate.c                |  6 ++++++
>  4 files changed, 20 insertions(+)
>
> diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
> index f4c42720fc7..89498a9a28a 100644
> --- a/target/riscv/insn32-64.decode
> +++ b/target/riscv/insn32-64.decode
> @@ -90,3 +90,4 @@ hsv_d     0110111  .....   ..... 100 00000 1110011 @r2_s
>  # *** RV64B Standard Extension (in addition to RV32B) ***
>  clzw       0110000 00000 ..... 001 ..... 0011011 @r2
>  ctzw       0110000 00001 ..... 001 ..... 0011011 @r2
> +cpopw      0110000 00010 ..... 001 ..... 0011011 @r2
> diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
> index 8fe838cf0d0..0e321da37f4 100644
> --- a/target/riscv/insn32.decode
> +++ b/target/riscv/insn32.decode
> @@ -597,3 +597,4 @@ vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
>  # *** RV32B Standard Extension ***
>  clz        011000 000000 ..... 001 ..... 0010011 @r2
>  ctz        011000 000001 ..... 001 ..... 0010011 @r2
> +cpop       011000 000010 ..... 001 ..... 0010011 @r2
> diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
> index 76788c2f353..dbbd94e1015 100644
> --- a/target/riscv/insn_trans/trans_rvb.c.inc
> +++ b/target/riscv/insn_trans/trans_rvb.c.inc
> @@ -29,6 +29,12 @@ static bool trans_ctz(DisasContext *ctx, arg_ctz *a)
>      return gen_unary(ctx, a, gen_ctz);
>  }
>
> +static bool trans_cpop(DisasContext *ctx, arg_cpop *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_unary(ctx, a, tcg_gen_ctpop_tl);
> +}
> +
>  /* RV64-only instructions */
>  #ifdef TARGET_RISCV64
>
> @@ -44,4 +50,10 @@ static bool trans_ctzw(DisasContext *ctx, arg_ctzw *a)
>      return gen_unary(ctx, a, gen_ctzw);
>  }
>
> +static bool trans_cpopw(DisasContext *ctx, arg_cpopw *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_unary(ctx, a, gen_cpopw);
> +}
> +
>  #endif
> diff --git a/target/riscv/translate.c b/target/riscv/translate.c
> index 4648c422f42..b20a58c63b4 100644
> --- a/target/riscv/translate.c
> +++ b/target/riscv/translate.c
> @@ -551,6 +551,12 @@ static void gen_clzw(TCGv ret, TCGv arg1)
>      tcg_gen_subi_i64(ret, ret, 32);
>  }
>
> +static void gen_cpopw(TCGv ret, TCGv arg1)
> +{
> +    tcg_gen_ext32u_tl(arg1, arg1);
> +    tcg_gen_ctpop_tl(ret, arg1);
> +}
> +
>  #endif
>
>  static bool gen_arith(DisasContext *ctx, arg_r *a,
> --
> 2.17.1
>
>

Re: [PATCH v5 04/17] target/riscv: rvb: logic-with-negate

[Alistair Francis]

On Wed, Apr 21, 2021 at 2:17 PM <frank.chang@sifive.com> wrote:
>
> From: Kito Cheng <kito.cheng@sifive.com>
>
> Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
> Signed-off-by: Frank Chang <frank.chang@sifive.com>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/riscv/insn32.decode              |  4 ++++
>  target/riscv/insn_trans/trans_rvb.c.inc | 18 ++++++++++++++++++
>  2 files changed, 22 insertions(+)
>
> diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
> index 0e321da37f4..d0b3f109b4e 100644
> --- a/target/riscv/insn32.decode
> +++ b/target/riscv/insn32.decode
> @@ -598,3 +598,7 @@ vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
>  clz        011000 000000 ..... 001 ..... 0010011 @r2
>  ctz        011000 000001 ..... 001 ..... 0010011 @r2
>  cpop       011000 000010 ..... 001 ..... 0010011 @r2
> +
> +andn       0100000 .......... 111 ..... 0110011 @r
> +orn        0100000 .......... 110 ..... 0110011 @r
> +xnor       0100000 .......... 100 ..... 0110011 @r
> diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
> index dbbd94e1015..73c4693a263 100644
> --- a/target/riscv/insn_trans/trans_rvb.c.inc
> +++ b/target/riscv/insn_trans/trans_rvb.c.inc
> @@ -35,6 +35,24 @@ static bool trans_cpop(DisasContext *ctx, arg_cpop *a)
>      return gen_unary(ctx, a, tcg_gen_ctpop_tl);
>  }
>
> +static bool trans_andn(DisasContext *ctx, arg_andn *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, tcg_gen_andc_tl);
> +}
> +
> +static bool trans_orn(DisasContext *ctx, arg_orn *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, tcg_gen_orc_tl);
> +}
> +
> +static bool trans_xnor(DisasContext *ctx, arg_xnor *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, tcg_gen_eqv_tl);
> +}
> +
>  /* RV64-only instructions */
>  #ifdef TARGET_RISCV64
>
> --
> 2.17.1
>
>

Re: [PATCH v5 05/17] target/riscv: rvb: pack two words into one register

[Alistair Francis]

On Wed, Apr 21, 2021 at 2:17 PM <frank.chang@sifive.com> wrote:
>
> From: Kito Cheng <kito.cheng@sifive.com>
>
> Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
> Signed-off-by: Frank Chang <frank.chang@sifive.com>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/riscv/insn32-64.decode           |  3 ++
>  target/riscv/insn32.decode              |  3 ++
>  target/riscv/insn_trans/trans_rvb.c.inc | 30 +++++++++++++++++++
>  target/riscv/translate.c                | 40 +++++++++++++++++++++++++
>  4 files changed, 76 insertions(+)
>
> diff --git a/target/riscv/insn32-64.decode b/target/riscv/insn32-64.decode
> index 89498a9a28a..d28c0bcf2c1 100644
> --- a/target/riscv/insn32-64.decode
> +++ b/target/riscv/insn32-64.decode
> @@ -91,3 +91,6 @@ hsv_d     0110111  .....   ..... 100 00000 1110011 @r2_s
>  clzw       0110000 00000 ..... 001 ..... 0011011 @r2
>  ctzw       0110000 00001 ..... 001 ..... 0011011 @r2
>  cpopw      0110000 00010 ..... 001 ..... 0011011 @r2
> +
> +packw      0000100 .......... 100 ..... 0111011 @r
> +packuw     0100100 .......... 100 ..... 0111011 @r
> diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
> index d0b3f109b4e..7f32b8c6d15 100644
> --- a/target/riscv/insn32.decode
> +++ b/target/riscv/insn32.decode
> @@ -602,3 +602,6 @@ cpop       011000 000010 ..... 001 ..... 0010011 @r2
>  andn       0100000 .......... 111 ..... 0110011 @r
>  orn        0100000 .......... 110 ..... 0110011 @r
>  xnor       0100000 .......... 100 ..... 0110011 @r
> +pack       0000100 .......... 100 ..... 0110011 @r
> +packu      0100100 .......... 100 ..... 0110011 @r
> +packh      0000100 .......... 111 ..... 0110011 @r
> diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
> index 73c4693a263..2d24dafac09 100644
> --- a/target/riscv/insn_trans/trans_rvb.c.inc
> +++ b/target/riscv/insn_trans/trans_rvb.c.inc
> @@ -53,6 +53,24 @@ static bool trans_xnor(DisasContext *ctx, arg_xnor *a)
>      return gen_arith(ctx, a, tcg_gen_eqv_tl);
>  }
>
> +static bool trans_pack(DisasContext *ctx, arg_pack *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, gen_pack);
> +}
> +
> +static bool trans_packu(DisasContext *ctx, arg_packu *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, gen_packu);
> +}
> +
> +static bool trans_packh(DisasContext *ctx, arg_packh *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, gen_packh);
> +}
> +
>  /* RV64-only instructions */
>  #ifdef TARGET_RISCV64
>
> @@ -74,4 +92,16 @@ static bool trans_cpopw(DisasContext *ctx, arg_cpopw *a)
>      return gen_unary(ctx, a, gen_cpopw);
>  }
>
> +static bool trans_packw(DisasContext *ctx, arg_packw *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, gen_packw);
> +}
> +
> +static bool trans_packuw(DisasContext *ctx, arg_packuw *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, gen_packuw);
> +}
> +
>  #endif
> diff --git a/target/riscv/translate.c b/target/riscv/translate.c
> index b20a58c63b4..4333207aeff 100644
> --- a/target/riscv/translate.c
> +++ b/target/riscv/translate.c
> @@ -536,6 +536,29 @@ static bool gen_arith_div_uw(DisasContext *ctx, arg_r *a,
>
>  #endif
>
> +static void gen_pack(TCGv ret, TCGv arg1, TCGv arg2)
> +{
> +    tcg_gen_deposit_tl(ret, arg1, arg2,
> +                       TARGET_LONG_BITS / 2,
> +                       TARGET_LONG_BITS / 2);
> +}
> +
> +static void gen_packu(TCGv ret, TCGv arg1, TCGv arg2)
> +{
> +    TCGv t = tcg_temp_new();
> +    tcg_gen_shri_tl(t, arg1, TARGET_LONG_BITS / 2);
> +    tcg_gen_deposit_tl(ret, arg2, t, 0, TARGET_LONG_BITS / 2);
> +    tcg_temp_free(t);
> +}
> +
> +static void gen_packh(TCGv ret, TCGv arg1, TCGv arg2)
> +{
> +    TCGv t = tcg_temp_new();
> +    tcg_gen_ext8u_tl(t, arg2);
> +    tcg_gen_deposit_tl(ret, arg1, t, 8, TARGET_LONG_BITS - 8);
> +    tcg_temp_free(t);
> +}
> +
>  #ifdef TARGET_RISCV64
>
>  static void gen_ctzw(TCGv ret, TCGv arg1)
> @@ -557,6 +580,23 @@ static void gen_cpopw(TCGv ret, TCGv arg1)
>      tcg_gen_ctpop_tl(ret, arg1);
>  }
>
> +static void gen_packw(TCGv ret, TCGv arg1, TCGv arg2)
> +{
> +    TCGv t = tcg_temp_new();
> +    tcg_gen_ext16s_i64(t, arg2);
> +    tcg_gen_deposit_i64(ret, arg1, t, 16, 48);
> +    tcg_temp_free(t);
> +}
> +
> +static void gen_packuw(TCGv ret, TCGv arg1, TCGv arg2)
> +{
> +    TCGv t = tcg_temp_new();
> +    tcg_gen_shri_i64(t, arg1, 16);
> +    tcg_gen_deposit_i64(ret, arg2, t, 0, 16);
> +    tcg_gen_ext32s_i64(ret, ret);
> +    tcg_temp_free(t);
> +}
> +
>  #endif
>
>  static bool gen_arith(DisasContext *ctx, arg_r *a,
> --
> 2.17.1
>
>

Re: [PATCH v5 06/17] target/riscv: rvb: min/max instructions

[Alistair Francis]

On Wed, Apr 21, 2021 at 2:19 PM <frank.chang@sifive.com> wrote:
>
> From: Kito Cheng <kito.cheng@sifive.com>
>
> Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> Signed-off-by: Frank Chang <frank.chang@sifive.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/riscv/insn32.decode              |  4 ++++
>  target/riscv/insn_trans/trans_rvb.c.inc | 24 ++++++++++++++++++++++++
>  2 files changed, 28 insertions(+)
>
> diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
> index 7f32b8c6d15..d64326fd864 100644
> --- a/target/riscv/insn32.decode
> +++ b/target/riscv/insn32.decode
> @@ -605,3 +605,7 @@ xnor       0100000 .......... 100 ..... 0110011 @r
>  pack       0000100 .......... 100 ..... 0110011 @r
>  packu      0100100 .......... 100 ..... 0110011 @r
>  packh      0000100 .......... 111 ..... 0110011 @r
> +min        0000101 .......... 100 ..... 0110011 @r
> +minu       0000101 .......... 101 ..... 0110011 @r
> +max        0000101 .......... 110 ..... 0110011 @r
> +maxu       0000101 .......... 111 ..... 0110011 @r
> diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
> index 2d24dafac09..2aa4515fe31 100644
> --- a/target/riscv/insn_trans/trans_rvb.c.inc
> +++ b/target/riscv/insn_trans/trans_rvb.c.inc
> @@ -71,6 +71,30 @@ static bool trans_packh(DisasContext *ctx, arg_packh *a)
>      return gen_arith(ctx, a, gen_packh);
>  }
>
> +static bool trans_min(DisasContext *ctx, arg_min *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, tcg_gen_smin_tl);
> +}
> +
> +static bool trans_max(DisasContext *ctx, arg_max *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, tcg_gen_smax_tl);
> +}
> +
> +static bool trans_minu(DisasContext *ctx, arg_minu *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, tcg_gen_umin_tl);
> +}
> +
> +static bool trans_maxu(DisasContext *ctx, arg_maxu *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_arith(ctx, a, tcg_gen_umax_tl);
> +}
> +
>  /* RV64-only instructions */
>  #ifdef TARGET_RISCV64
>
> --
> 2.17.1
>
>

Re: [PATCH v5 07/17] target/riscv: rvb: sign-extend instructions

[Alistair Francis]

On Wed, Apr 21, 2021 at 2:20 PM <frank.chang@sifive.com> wrote:
>
> From: Kito Cheng <kito.cheng@sifive.com>
>
> Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
> Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> Signed-off-by: Frank Chang <frank.chang@sifive.com>

Reviewed-by: Alistair Francis <alistair.francis@wdc.com>

Alistair

> ---
>  target/riscv/insn32.decode              |  2 ++
>  target/riscv/insn_trans/trans_rvb.c.inc | 12 ++++++++++++
>  2 files changed, 14 insertions(+)
>
> diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
> index d64326fd864..938c23088eb 100644
> --- a/target/riscv/insn32.decode
> +++ b/target/riscv/insn32.decode
> @@ -598,6 +598,8 @@ vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
>  clz        011000 000000 ..... 001 ..... 0010011 @r2
>  ctz        011000 000001 ..... 001 ..... 0010011 @r2
>  cpop       011000 000010 ..... 001 ..... 0010011 @r2
> +sext_b     011000 000100 ..... 001 ..... 0010011 @r2
> +sext_h     011000 000101 ..... 001 ..... 0010011 @r2
>
>  andn       0100000 .......... 111 ..... 0110011 @r
>  orn        0100000 .......... 110 ..... 0110011 @r
> diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
> index 2aa4515fe31..1496996a660 100644
> --- a/target/riscv/insn_trans/trans_rvb.c.inc
> +++ b/target/riscv/insn_trans/trans_rvb.c.inc
> @@ -95,6 +95,18 @@ static bool trans_maxu(DisasContext *ctx, arg_maxu *a)
>      return gen_arith(ctx, a, tcg_gen_umax_tl);
>  }
>
> +static bool trans_sext_b(DisasContext *ctx, arg_sext_b *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_unary(ctx, a, tcg_gen_ext8s_tl);
> +}
> +
> +static bool trans_sext_h(DisasContext *ctx, arg_sext_h *a)
> +{
> +    REQUIRE_EXT(ctx, RVB);
> +    return gen_unary(ctx, a, tcg_gen_ext16s_tl);
> +}
> +
>  /* RV64-only instructions */
>  #ifdef TARGET_RISCV64
>
> --
> 2.17.1
>
>

Re: [PATCH v5 02/17] target/riscv: rvb: count leading/trailing zeros

[Frank Chang]

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Alistair Francis <alistair23@gmail.com> 於 2021年4月27日 週二 下午2:05寫道：

> On Wed, Apr 21, 2021 at 2:14 PM <frank.chang@sifive.com> wrote:
> >
> > From: Kito Cheng <kito.cheng@sifive.com>
> >
> > Signed-off-by: Kito Cheng <kito.cheng@sifive.com>
> > Signed-off-by: Frank Chang <frank.chang@sifive.com>
> > Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
> > ---
> >  target/riscv/insn32-64.decode           |  4 +++
> >  target/riscv/insn32.decode              |  7 +++-
> >  target/riscv/insn_trans/trans_rvb.c.inc | 47 +++++++++++++++++++++++++
> >  target/riscv/translate.c                | 42 ++++++++++++++++++++++
> >  4 files changed, 99 insertions(+), 1 deletion(-)
> >  create mode 100644 target/riscv/insn_trans/trans_rvb.c.inc
> >
> > diff --git a/target/riscv/insn32-64.decode
> b/target/riscv/insn32-64.decode
> > index 8157dee8b7c..f4c42720fc7 100644
> > --- a/target/riscv/insn32-64.decode
> > +++ b/target/riscv/insn32-64.decode
> > @@ -86,3 +86,7 @@ fmv_d_x    1111001  00000 ..... 000 ..... 1010011 @r2
> >  hlv_wu    0110100  00001   ..... 100 ..... 1110011 @r2
> >  hlv_d     0110110  00000   ..... 100 ..... 1110011 @r2
> >  hsv_d     0110111  .....   ..... 100 00000 1110011 @r2_s
> > +
> > +# *** RV64B Standard Extension (in addition to RV32B) ***
> > +clzw       0110000 00000 ..... 001 ..... 0011011 @r2
> > +ctzw       0110000 00001 ..... 001 ..... 0011011 @r2
> > diff --git a/target/riscv/insn32.decode b/target/riscv/insn32.decode
> > index 3823b3ea800..8fe838cf0d0 100644
> > --- a/target/riscv/insn32.decode
> > +++ b/target/riscv/insn32.decode
> > @@ -40,6 +40,7 @@
> >  &i    imm rs1 rd
> >  &j    imm rd
> >  &r    rd rs1 rs2
> > +&r2   rd rs1
> >  &s    imm rs1 rs2
> >  &u    imm rd
> >  &shift     shamt rs1 rd
> > @@ -67,7 +68,7 @@
> >  @r4_rm   ..... ..  ..... ..... ... ..... ....... %rs3 %rs2 %rs1 %rm %rd
> >  @r_rm    .......   ..... ..... ... ..... ....... %rs2 %rs1 %rm %rd
> >  @r2_rm   .......   ..... ..... ... ..... ....... %rs1 %rm %rd
> > -@r2      .......   ..... ..... ... ..... ....... %rs1 %rd
> > +@r2      .......   ..... ..... ... ..... ....... &r2 %rs1 %rd
> >  @r2_nfvm ... ... vm:1 ..... ..... ... ..... ....... &r2nfvm %nf %rs1 %rd
> >  @r2_vm   ...... vm:1 ..... ..... ... ..... ....... &rmr %rs2 %rd
> >  @r1_vm   ...... vm:1 ..... ..... ... ..... ....... %rd
> > @@ -592,3 +593,7 @@ vcompress_vm    010111 - ..... ..... 010 .....
> 1010111 @r
> >
> >  vsetvli         0 ........... ..... 111 ..... 1010111  @r2_zimm
> >  vsetvl          1000000 ..... ..... 111 ..... 1010111  @r
> > +
> > +# *** RV32B Standard Extension ***
> > +clz        011000 000000 ..... 001 ..... 0010011 @r2
> > +ctz        011000 000001 ..... 001 ..... 0010011 @r2
> > diff --git a/target/riscv/insn_trans/trans_rvb.c.inc
> b/target/riscv/insn_trans/trans_rvb.c.inc
> > new file mode 100644
> > index 00000000000..76788c2f353
> > --- /dev/null
> > +++ b/target/riscv/insn_trans/trans_rvb.c.inc
> > @@ -0,0 +1,47 @@
> > +/*
> > + * RISC-V translation routines for the RVB Standard Extension.
> > + *
> > + * Copyright (c) 2020 Kito Cheng, kito.cheng@sifive.com
> > + * Copyright (c) 2020 Frank Chang, frank.chang@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/>.
> > + */
> > +
> > +static bool trans_clz(DisasContext *ctx, arg_clz *a)
> > +{
> > +    REQUIRE_EXT(ctx, RVB);
> > +    return gen_unary(ctx, a, gen_clz);
> > +}
> > +
> > +static bool trans_ctz(DisasContext *ctx, arg_ctz *a)
> > +{
> > +    REQUIRE_EXT(ctx, RVB);
> > +    return gen_unary(ctx, a, gen_ctz);
> > +}
> > +
> > +/* RV64-only instructions */
> > +#ifdef TARGET_RISCV64
> > +
> > +static bool trans_clzw(DisasContext *ctx, arg_clzw *a)
> > +{
> > +    REQUIRE_EXT(ctx, RVB);
> > +    return gen_unary(ctx, a, gen_clzw);
> > +}
> > +
> > +static bool trans_ctzw(DisasContext *ctx, arg_ctzw *a)
> > +{
> > +    REQUIRE_EXT(ctx, RVB);
> > +    return gen_unary(ctx, a, gen_ctzw);
> > +}
> > +
> > +#endif
> > diff --git a/target/riscv/translate.c b/target/riscv/translate.c
> > index 2f9f5ccc621..4648c422f42 100644
> > --- a/target/riscv/translate.c
> > +++ b/target/riscv/translate.c
> > @@ -536,6 +536,23 @@ static bool gen_arith_div_uw(DisasContext *ctx,
> arg_r *a,
> >
> >  #endif
> >
> > +#ifdef TARGET_RISCV64
>
> Thanks for the patches!
>
> Unfortunately this will need to be rebased and updated. We don't want
> any more #ifdef's on the RISC-V xlen. The idea is to make the XLEN not
> just a compile time constant.
>
> The latest riscv-to-apply.next tree has changes to allow you to do
> this. See this commit for what this will look like:
>
> https://github.com/alistair23/qemu/commit/4965ae3f6f3838e651d1a33050b15b4ca3d822a0
>
> The changes should be in master after the 6.0 release.
>
> Alistair
>

Thanks, I will rebase my patchset.

Frank Chang


>
> > +
> > +static void gen_ctzw(TCGv ret, TCGv arg1)
> > +{
> > +    tcg_gen_ori_i64(ret, arg1, MAKE_64BIT_MASK(32, 32));
> > +    tcg_gen_ctzi_i64(ret, ret, 64);
> > +}
> > +
> > +static void gen_clzw(TCGv ret, TCGv arg1)
> > +{
> > +    tcg_gen_ext32u_i64(ret, arg1);
> > +    tcg_gen_clzi_i64(ret, ret, 64);
> > +    tcg_gen_subi_i64(ret, ret, 32);
> > +}
> > +
> > +#endif
> > +
> >  static bool gen_arith(DisasContext *ctx, arg_r *a,
> >                        void(*func)(TCGv, TCGv, TCGv))
> >  {
> > @@ -581,6 +598,30 @@ static uint32_t opcode_at(DisasContextBase *dcbase,
> target_ulong pc)
> >      return cpu_ldl_code(env, pc);
> >  }
> >
> > +static void gen_ctz(TCGv ret, TCGv arg1)
> > +{
> > +    tcg_gen_ctzi_tl(ret, arg1, TARGET_LONG_BITS);
> > +}
> > +
> > +static void gen_clz(TCGv ret, TCGv arg1)
> > +{
> > +    tcg_gen_clzi_tl(ret, arg1, TARGET_LONG_BITS);
> > +}
> > +
> > +static bool gen_unary(DisasContext *ctx, arg_r2 *a,
> > +                      void(*func)(TCGv, TCGv))
> > +{
> > +    TCGv source = tcg_temp_new();
> > +
> > +    gen_get_gpr(source, a->rs1);
> > +
> > +    (*func)(source, source);
> > +
> > +    gen_set_gpr(a->rd, source);
> > +    tcg_temp_free(source);
> > +    return true;
> > +}
> > +
> >  /* Include insn module translation function */
> >  #include "insn_trans/trans_rvi.c.inc"
> >  #include "insn_trans/trans_rvm.c.inc"
> > @@ -589,6 +630,7 @@ static uint32_t opcode_at(DisasContextBase *dcbase,
> target_ulong pc)
> >  #include "insn_trans/trans_rvd.c.inc"
> >  #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_privileged.c.inc"
> >
> >  /* Include the auto-generated decoder for 16 bit insn */
> > --
> > 2.17.1
> >
> >
>
>

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