target/riscv: Move gen_* helpers for RVB

Move these helpers near their use by the trans_*
functions within insn_trans/trans_rvb.c.inc.

Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-id: 20210823195529.560295-11-richard.henderson@linaro.org
Signed-off-by: Alistair Francis <alistair.francis@wdc.com>

1 files changed, 234 insertions, 0 deletions

diff --git a/target/riscv/insn_trans/trans_rvb.c.inc b/target/riscv/insn_trans/trans_rvb.c.inc
index 217a7d1..73f088b 100644
--- a/target/riscv/insn_trans/trans_rvb.c.inc
+++ b/target/riscv/insn_trans/trans_rvb.c.inc
@@ -17,12 +17,23 @@
  * this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+
+static void gen_clz(TCGv ret, TCGv arg1)
+{
+    tcg_gen_clzi_tl(ret, arg1, TARGET_LONG_BITS);
+}
+
 static bool trans_clz(DisasContext *ctx, arg_clz *a)
 {
     REQUIRE_EXT(ctx, RVB);
     return gen_unary(ctx, a, gen_clz);
 }
 
+static void gen_ctz(TCGv ret, TCGv arg1)
+{
+    tcg_gen_ctzi_tl(ret, arg1, TARGET_LONG_BITS);
+}
+
 static bool trans_ctz(DisasContext *ctx, arg_ctz *a)
 {
     REQUIRE_EXT(ctx, RVB);
@@ -53,18 +64,41 @@ static bool trans_xnor(DisasContext *ctx, arg_xnor *a)
     return gen_arith(ctx, a, EXT_NONE, tcg_gen_eqv_tl);
 }
 
+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 bool trans_pack(DisasContext *ctx, arg_pack *a)
 {
     REQUIRE_EXT(ctx, RVB);
     return gen_arith(ctx, a, EXT_NONE, gen_pack);
 }
 
+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 bool trans_packu(DisasContext *ctx, arg_packu *a)
 {
     REQUIRE_EXT(ctx, RVB);
     return gen_arith(ctx, a, EXT_NONE, gen_packu);
 }
 
+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);
+}
+
 static bool trans_packh(DisasContext *ctx, arg_packh *a)
 {
     REQUIRE_EXT(ctx, RVB);
@@ -107,6 +141,22 @@ static bool trans_sext_h(DisasContext *ctx, arg_sext_h *a)
     return gen_unary(ctx, a, tcg_gen_ext16s_tl);
 }
 
+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 bool trans_bset(DisasContext *ctx, arg_bset *a)
 {
     REQUIRE_EXT(ctx, RVB);
@@ -119,6 +169,16 @@ static bool trans_bseti(DisasContext *ctx, arg_bseti *a)
     return gen_shifti(ctx, a, gen_bset);
 }
 
+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 bool trans_bclr(DisasContext *ctx, arg_bclr *a)
 {
     REQUIRE_EXT(ctx, RVB);
@@ -131,6 +191,16 @@ static bool trans_bclri(DisasContext *ctx, arg_bclri *a)
     return gen_shifti(ctx, a, gen_bclr);
 }
 
+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 bool trans_binv(DisasContext *ctx, arg_binv *a)
 {
     REQUIRE_EXT(ctx, RVB);
@@ -143,6 +213,12 @@ static bool trans_binvi(DisasContext *ctx, arg_binvi *a)
     return gen_shifti(ctx, a, gen_binv);
 }
 
+static void gen_bext(TCGv ret, TCGv arg1, TCGv shamt)
+{
+    tcg_gen_shr_tl(ret, arg1, shamt);
+    tcg_gen_andi_tl(ret, ret, 1);
+}
+
 static bool trans_bext(DisasContext *ctx, arg_bext *a)
 {
     REQUIRE_EXT(ctx, RVB);
@@ -155,6 +231,13 @@ static bool trans_bexti(DisasContext *ctx, arg_bexti *a)
     return gen_shifti(ctx, a, gen_bext);
 }
 
+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 bool trans_slo(DisasContext *ctx, arg_slo *a)
 {
     REQUIRE_EXT(ctx, RVB);
@@ -167,6 +250,13 @@ static bool trans_sloi(DisasContext *ctx, arg_sloi *a)
     return gen_shifti(ctx, a, gen_slo);
 }
 
+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);
+}
+
 static bool trans_sro(DisasContext *ctx, arg_sro *a)
 {
     REQUIRE_EXT(ctx, RVB);
@@ -203,6 +293,28 @@ static bool trans_grev(DisasContext *ctx, arg_grev *a)
     return gen_shift(ctx, a, gen_helper_grev);
 }
 
+static bool gen_grevi(DisasContext *ctx, arg_grevi *a)
+{
+    TCGv source1 = tcg_temp_new();
+    TCGv source2;
+
+    gen_get_gpr(ctx, 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(ctx, a->rd, source1);
+    tcg_temp_free(source1);
+    return true;
+}
+
 static bool trans_grevi(DisasContext *ctx, arg_grevi *a)
 {
     REQUIRE_EXT(ctx, RVB);
@@ -226,6 +338,21 @@ static bool trans_gorci(DisasContext *ctx, arg_gorci *a)
     return gen_shifti(ctx, a, gen_helper_gorc);
 }
 
+#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)
+
 #define GEN_TRANS_SHADD(SHAMT)                                             \
 static bool trans_sh##SHAMT##add(DisasContext *ctx, arg_sh##SHAMT##add *a) \
 {                                                                          \
@@ -237,6 +364,13 @@ GEN_TRANS_SHADD(1)
 GEN_TRANS_SHADD(2)
 GEN_TRANS_SHADD(3)
 
+static void gen_clzw(TCGv ret, TCGv arg1)
+{
+    tcg_gen_ext32u_tl(ret, arg1);
+    tcg_gen_clzi_tl(ret, ret, 64);
+    tcg_gen_subi_tl(ret, ret, 32);
+}
+
 static bool trans_clzw(DisasContext *ctx, arg_clzw *a)
 {
     REQUIRE_64BIT(ctx);
@@ -244,6 +378,12 @@ static bool trans_clzw(DisasContext *ctx, arg_clzw *a)
     return gen_unary(ctx, a, gen_clzw);
 }
 
+static void gen_ctzw(TCGv ret, TCGv arg1)
+{
+    tcg_gen_ori_tl(ret, arg1, (target_ulong)MAKE_64BIT_MASK(32, 32));
+    tcg_gen_ctzi_tl(ret, ret, 64);
+}
+
 static bool trans_ctzw(DisasContext *ctx, arg_ctzw *a)
 {
     REQUIRE_64BIT(ctx);
@@ -251,6 +391,12 @@ static bool trans_ctzw(DisasContext *ctx, arg_ctzw *a)
     return gen_unary(ctx, a, gen_ctzw);
 }
 
+static void gen_cpopw(TCGv ret, TCGv arg1)
+{
+    tcg_gen_ext32u_tl(arg1, arg1);
+    tcg_gen_ctpop_tl(ret, arg1);
+}
+
 static bool trans_cpopw(DisasContext *ctx, arg_cpopw *a)
 {
     REQUIRE_64BIT(ctx);
@@ -258,6 +404,14 @@ static bool trans_cpopw(DisasContext *ctx, arg_cpopw *a)
     return gen_unary(ctx, a, gen_cpopw);
 }
 
+static void gen_packw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    TCGv t = tcg_temp_new();
+    tcg_gen_ext16s_tl(t, arg2);
+    tcg_gen_deposit_tl(ret, arg1, t, 16, 48);
+    tcg_temp_free(t);
+}
+
 static bool trans_packw(DisasContext *ctx, arg_packw *a)
 {
     REQUIRE_64BIT(ctx);
@@ -265,6 +419,15 @@ static bool trans_packw(DisasContext *ctx, arg_packw *a)
     return gen_arith(ctx, a, EXT_NONE, gen_packw);
 }
 
+static void gen_packuw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    TCGv t = tcg_temp_new();
+    tcg_gen_shri_tl(t, arg1, 16);
+    tcg_gen_deposit_tl(ret, arg2, t, 0, 16);
+    tcg_gen_ext32s_tl(ret, ret);
+    tcg_temp_free(t);
+}
+
 static bool trans_packuw(DisasContext *ctx, arg_packuw *a)
 {
     REQUIRE_64BIT(ctx);
@@ -349,6 +512,24 @@ static bool trans_sroiw(DisasContext *ctx, arg_sroiw *a)
     return gen_shiftiw(ctx, a, gen_sro);
 }
 
+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 bool trans_rorw(DisasContext *ctx, arg_rorw *a)
 {
     REQUIRE_64BIT(ctx);
@@ -363,6 +544,24 @@ static bool trans_roriw(DisasContext *ctx, arg_roriw *a)
     return gen_shiftiw(ctx, a, gen_rorw);
 }
 
+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);
+}
+
 static bool trans_rolw(DisasContext *ctx, arg_rolw *a)
 {
     REQUIRE_64BIT(ctx);
@@ -370,6 +569,12 @@ static bool trans_rolw(DisasContext *ctx, arg_rolw *a)
     return gen_shiftw(ctx, a, gen_rolw);
 }
 
+static void gen_grevw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    tcg_gen_ext32u_tl(arg1, arg1);
+    gen_helper_grev(ret, arg1, arg2);
+}
+
 static bool trans_grevw(DisasContext *ctx, arg_grevw *a)
 {
     REQUIRE_64BIT(ctx);
@@ -384,6 +589,12 @@ static bool trans_greviw(DisasContext *ctx, arg_greviw *a)
     return gen_shiftiw(ctx, a, gen_grevw);
 }
 
+static void gen_gorcw(TCGv ret, TCGv arg1, TCGv arg2)
+{
+    tcg_gen_ext32u_tl(arg1, arg1);
+    gen_helper_gorcw(ret, arg1, arg2);
+}
+
 static bool trans_gorcw(DisasContext *ctx, arg_gorcw *a)
 {
     REQUIRE_64BIT(ctx);
@@ -398,6 +609,23 @@ static bool trans_gorciw(DisasContext *ctx, arg_gorciw *a)
     return gen_shiftiw(ctx, a, gen_gorcw);
 }
 
+#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)
+
 #define GEN_TRANS_SHADD_UW(SHAMT)                             \
 static bool trans_sh##SHAMT##add_uw(DisasContext *ctx,        \
                                     arg_sh##SHAMT##add_uw *a) \
@@ -411,6 +639,12 @@ GEN_TRANS_SHADD_UW(1)
 GEN_TRANS_SHADD_UW(2)
 GEN_TRANS_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);
+}
+
 static bool trans_add_uw(DisasContext *ctx, arg_add_uw *a)
 {
     REQUIRE_64BIT(ctx);