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From: Peter Maydell <peter.maydell@linaro.org>
To: qemu-arm@nongnu.org, qemu-devel@nongnu.org
Cc: Richard Henderson <richard.henderson@linaro.org>
Subject: [PATCH v2 45/57] target/arm: Implement MVE VQSHL (vector)
Date: Mon, 14 Jun 2021 16:09:55 +0100	[thread overview]
Message-ID: <20210614151007.4545-46-peter.maydell@linaro.org> (raw)
In-Reply-To: <20210614151007.4545-1-peter.maydell@linaro.org>

Implement the MVE VQSHL insn (encoding T4, which is the
vector-shift-by-vector version).

The DO_SQSHL_OP and DO_UQSHL_OP macros here are derived from
the neon_helper.c code for qshl_u{8,16,32} and qshl_s{8,16,32}.

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
---
 target/arm/helper-mve.h    |  8 ++++++++
 target/arm/mve.decode      | 12 ++++++++++++
 target/arm/mve_helper.c    | 34 ++++++++++++++++++++++++++++++++++
 target/arm/translate-mve.c |  2 ++
 4 files changed, 56 insertions(+)

diff --git a/target/arm/helper-mve.h b/target/arm/helper-mve.h
index 93847fc04ad..1c5626bb726 100644
--- a/target/arm/helper-mve.h
+++ b/target/arm/helper-mve.h
@@ -169,6 +169,14 @@ DEF_HELPER_FLAGS_4(mve_vqsubub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vqsubuh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 DEF_HELPER_FLAGS_4(mve_vqsubuw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
 
+DEF_HELPER_FLAGS_4(mve_vqshlsb, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vqshlsh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vqshlsw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
+DEF_HELPER_FLAGS_4(mve_vqshlub, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vqshluh, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+DEF_HELPER_FLAGS_4(mve_vqshluw, TCG_CALL_NO_WG, void, env, ptr, ptr, ptr)
+
 DEF_HELPER_FLAGS_4(mve_vadd_scalarb, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarh, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
 DEF_HELPER_FLAGS_4(mve_vadd_scalarw, TCG_CALL_NO_WG, void, env, ptr, ptr, i32)
diff --git a/target/arm/mve.decode b/target/arm/mve.decode
index 80fa647c08f..2c37e265765 100644
--- a/target/arm/mve.decode
+++ b/target/arm/mve.decode
@@ -40,6 +40,15 @@
 @2op .... .... .. size:2 .... .... .... .... .... &2op qd=%qd qm=%qm qn=%qn
 @2op_nosz .... .... .... .... .... .... .... .... &2op qd=%qd qm=%qm qn=%qn size=0
 
+# The _rev suffix indicates that Vn and Vm are reversed. This is
+# the case for shifts. In the Arm ARM these insns are documented
+# with the Vm and Vn fields in their usual places, but in the
+# assembly the operands are listed "backwards", ie in the order
+# Qd, Qm, Qn where other insns use Qd, Qn, Qm. For QEMU we choose
+# to consider Vm and Vn as being in different fields in the insn.
+# This gives us consistency with A64 and Neon.
+@2op_rev .... .... .. size:2 .... .... .... .... .... &2op qd=%qd qm=%qn qn=%qm
+
 @2scalar .... .... .. size:2 .... .... .... .... rm:4 &2scalar qd=%qd qn=%qn
 @2scalar_nosz .... .... .... .... .... .... .... rm:4 &2scalar qd=%qd qn=%qn
 
@@ -121,6 +130,9 @@ VQADD_U          111 1 1111 0 . .. ... 0 ... 0 0000 . 1 . 1 ... 0 @2op
 VQSUB_S          111 0 1111 0 . .. ... 0 ... 0 0010 . 1 . 1 ... 0 @2op
 VQSUB_U          111 1 1111 0 . .. ... 0 ... 0 0010 . 1 . 1 ... 0 @2op
 
+VQSHL_S          111 0 1111 0 . .. ... 0 ... 0 0100 . 1 . 1 ... 0 @2op_rev
+VQSHL_U          111 1 1111 0 . .. ... 0 ... 0 0100 . 1 . 1 ... 0 @2op_rev
+
 # Vector miscellaneous
 
 VCLS             1111 1111 1 . 11 .. 00 ... 0 0100 01 . 0 ... 0 @1op
diff --git a/target/arm/mve_helper.c b/target/arm/mve_helper.c
index fc7e08d6128..31ee057db2e 100644
--- a/target/arm/mve_helper.c
+++ b/target/arm/mve_helper.c
@@ -404,6 +404,18 @@ DO_1OP(vfnegs, 8, uint64_t, DO_FNEGS)
         mve_advance_vpt(env);                                           \
     }
 
+/* provide unsigned 2-op helpers for all sizes */
+#define DO_2OP_SAT_U(OP, FN)                    \
+    DO_2OP_SAT(OP##b, 1, uint8_t, FN)           \
+    DO_2OP_SAT(OP##h, 2, uint16_t, FN)          \
+    DO_2OP_SAT(OP##w, 4, uint32_t, FN)
+
+/* provide signed 2-op helpers for all sizes */
+#define DO_2OP_SAT_S(OP, FN)                    \
+    DO_2OP_SAT(OP##b, 1, int8_t, FN)            \
+    DO_2OP_SAT(OP##h, 2, int16_t, FN)           \
+    DO_2OP_SAT(OP##w, 4, int32_t, FN)
+
 #define DO_AND(N, M)  ((N) & (M))
 #define DO_BIC(N, M)  ((N) & ~(M))
 #define DO_ORR(N, M)  ((N) | (M))
@@ -592,6 +604,28 @@ DO_2OP_SAT(vqsubsb, 1, int8_t, DO_SQSUB_B)
 DO_2OP_SAT(vqsubsh, 2, int16_t, DO_SQSUB_H)
 DO_2OP_SAT(vqsubsw, 4, int32_t, DO_SQSUB_W)
 
+/*
+ * This wrapper fixes up the impedance mismatch between do_sqrshl_bhs()
+ * and friends wanting a uint32_t* sat and our needing a bool*.
+ */
+#define WRAP_QRSHL_HELPER(FN, N, M, ROUND, satp)                        \
+    ({                                                                  \
+        uint32_t su32 = 0;                                              \
+        typeof(N) r = FN(N, (int8_t)(M), sizeof(N) * 8, ROUND, &su32);  \
+        if (su32) {                                                     \
+            *satp = true;                                               \
+        }                                                               \
+        r;                                                              \
+    })
+
+#define DO_SQSHL_OP(N, M, satp) \
+    WRAP_QRSHL_HELPER(do_sqrshl_bhs, N, M, false, satp)
+#define DO_UQSHL_OP(N, M, satp) \
+    WRAP_QRSHL_HELPER(do_uqrshl_bhs, N, M, false, satp)
+
+DO_2OP_SAT_S(vqshls, DO_SQSHL_OP)
+DO_2OP_SAT_U(vqshlu, DO_UQSHL_OP)
+
 #define DO_2OP_SCALAR(OP, ESIZE, TYPE, FN)                              \
     void HELPER(glue(mve_, OP))(CPUARMState *env, void *vd, void *vn,   \
                                 uint32_t rm)                            \
diff --git a/target/arm/translate-mve.c b/target/arm/translate-mve.c
index 2accc050708..bde62bf2445 100644
--- a/target/arm/translate-mve.c
+++ b/target/arm/translate-mve.c
@@ -402,6 +402,8 @@ DO_2OP(VQADD_S, vqadds)
 DO_2OP(VQADD_U, vqaddu)
 DO_2OP(VQSUB_S, vqsubs)
 DO_2OP(VQSUB_U, vqsubu)
+DO_2OP(VQSHL_S, vqshls)
+DO_2OP(VQSHL_U, vqshlu)
 
 static bool do_2op_scalar(DisasContext *s, arg_2scalar *a,
                           MVEGenTwoOpScalarFn fn)
-- 
2.20.1



  parent reply	other threads:[~2021-06-14 15:36 UTC|newest]

Thread overview: 77+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-06-14 15:09 [PATCH v2 00/57] target/arm: First slice of MVE implementation Peter Maydell
2021-06-14 15:09 ` [PATCH v2 01/57] target/arm: Provide and use H8 and H1_8 macros Peter Maydell
2021-06-14 15:09 ` [PATCH v2 02/57] target/arm: Enable FPSCR.QC bit for MVE Peter Maydell
2021-06-14 15:09 ` [PATCH v2 03/57] target/arm: Handle VPR semantics in existing code Peter Maydell
2021-06-14 15:09 ` [PATCH v2 04/57] target/arm: Add handling for PSR.ECI/ICI Peter Maydell
2021-06-14 19:15   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 05/57] target/arm: Let vfp_access_check() handle late NOCP checks Peter Maydell
2021-06-14 15:09 ` [PATCH v2 06/57] target/arm: Implement MVE LCTP Peter Maydell
2021-06-14 15:09 ` [PATCH v2 07/57] target/arm: Implement MVE WLSTP insn Peter Maydell
2021-06-14 19:20   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 08/57] target/arm: Implement MVE DLSTP Peter Maydell
2021-06-14 15:09 ` [PATCH v2 09/57] target/arm: Implement MVE LETP insn Peter Maydell
2021-06-14 15:09 ` [PATCH v2 10/57] target/arm: Add framework for MVE decode Peter Maydell
2021-06-14 15:09 ` [PATCH v2 11/57] target/arm: Implement MVE VLDR/VSTR (non-widening forms) Peter Maydell
2021-06-14 19:29   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 12/57] target/arm: Implement widening/narrowing MVE VLDR/VSTR insns Peter Maydell
2021-06-14 19:39   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 13/57] target/arm: Move expand_pred_b() data to translate.c Peter Maydell
2021-06-14 19:41   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 14/57] target/arm: Implement MVE VCLZ Peter Maydell
2021-06-14 20:00   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 15/57] target/arm: Implement MVE VCLS Peter Maydell
2021-06-14 15:09 ` [PATCH v2 16/57] bitops.h: Provide hswap32(), hswap64(), wswap64() swapping operations Peter Maydell
2021-06-14 15:09 ` [PATCH v2 17/57] target/arm: Implement MVE VREV16, VREV32, VREV64 Peter Maydell
2021-06-14 20:03   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 18/57] target/arm: Implement MVE VMVN (register) Peter Maydell
2021-06-14 15:09 ` [PATCH v2 19/57] target/arm: Implement MVE VABS Peter Maydell
2021-06-14 20:06   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 20/57] target/arm: Implement MVE VNEG Peter Maydell
2021-06-14 15:09 ` [PATCH v2 21/57] tcg: Make gen_dup_i32() public Peter Maydell
2021-06-14 20:12   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 22/57] target/arm: Implement MVE VDUP Peter Maydell
2021-06-14 20:15   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 23/57] target/arm: Implement MVE VAND, VBIC, VORR, VORN, VEOR Peter Maydell
2021-06-14 15:09 ` [PATCH v2 24/57] target/arm: Implement MVE VADD, VSUB, VMUL Peter Maydell
2021-06-14 15:09 ` [PATCH v2 25/57] target/arm: Implement MVE VMULH Peter Maydell
2021-06-14 15:09 ` [PATCH v2 26/57] target/arm: Implement MVE VRMULH Peter Maydell
2021-06-14 15:09 ` [PATCH v2 27/57] target/arm: Implement MVE VMAX, VMIN Peter Maydell
2021-06-14 15:09 ` [PATCH v2 28/57] target/arm: Implement MVE VABD Peter Maydell
2021-06-14 15:09 ` [PATCH v2 29/57] target/arm: Implement MVE VHADD, VHSUB Peter Maydell
2021-06-14 15:09 ` [PATCH v2 30/57] target/arm: Implement MVE VMULL Peter Maydell
2021-06-14 15:09 ` [PATCH v2 31/57] target/arm: Implement MVE VMLALDAV Peter Maydell
2021-06-14 15:09 ` [PATCH v2 32/57] target/arm: Implement MVE VMLSLDAV Peter Maydell
2021-06-14 15:09 ` [PATCH v2 33/57] include/qemu/int128.h: Add function to create Int128 from int64_t Peter Maydell
2021-06-14 15:09 ` [PATCH v2 34/57] target/arm: Implement MVE VRMLALDAVH, VRMLSLDAVH Peter Maydell
2021-06-14 21:27   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 35/57] target/arm: Implement MVE VADD (scalar) Peter Maydell
2021-06-14 21:30   ` Richard Henderson
2021-06-14 15:09 ` [PATCH v2 36/57] target/arm: Implement MVE VSUB, VMUL (scalar) Peter Maydell
2021-06-14 15:09 ` [PATCH v2 37/57] target/arm: Implement MVE VHADD, VHSUB (scalar) Peter Maydell
2021-06-14 15:09 ` [PATCH v2 38/57] target/arm: Implement MVE VBRSR Peter Maydell
2021-06-14 15:09 ` [PATCH v2 39/57] target/arm: Implement MVE VPST Peter Maydell
2021-06-14 15:09 ` [PATCH v2 40/57] target/arm: Implement MVE VQADD and VQSUB Peter Maydell
2021-06-14 15:09 ` [PATCH v2 41/57] target/arm: Implement MVE VQDMULH and VQRDMULH (scalar) Peter Maydell
2021-06-14 15:09 ` [PATCH v2 42/57] target/arm: Implement MVE VQDMULL scalar Peter Maydell
2021-06-14 15:09 ` [PATCH v2 43/57] target/arm: Implement MVE VQDMULH, VQRDMULH (vector) Peter Maydell
2021-06-14 15:09 ` [PATCH v2 44/57] target/arm: Implement MVE VQADD, VQSUB (vector) Peter Maydell
2021-06-14 15:09 ` Peter Maydell [this message]
2021-06-14 21:43   ` [PATCH v2 45/57] target/arm: Implement MVE VQSHL (vector) Richard Henderson
2021-06-14 15:09 ` [PATCH v2 46/57] target/arm: Implement MVE VQRSHL Peter Maydell
2021-06-14 15:09 ` [PATCH v2 47/57] target/arm: Implement MVE VSHL insn Peter Maydell
2021-06-14 15:09 ` [PATCH v2 48/57] target/arm: Implmement MVE VRSHL Peter Maydell
2021-06-14 15:09 ` [PATCH v2 49/57] target/arm: Implement MVE VQDMLADH and VQRDMLADH Peter Maydell
2021-06-14 15:10 ` [PATCH v2 50/57] target/arm: Implement MVE VQDMLSDH and VQRDMLSDH Peter Maydell
2021-06-14 15:10 ` [PATCH v2 51/57] target/arm: Implement MVE VQDMULL (vector) Peter Maydell
2021-06-14 15:10 ` [PATCH v2 52/57] target/arm: Implement MVE VRHADD Peter Maydell
2021-06-14 15:10 ` [PATCH v2 53/57] target/arm: Implement MVE VADC, VSBC Peter Maydell
2021-06-14 21:58   ` Richard Henderson
2021-06-14 15:10 ` [PATCH v2 54/57] target/arm: Implement MVE VCADD Peter Maydell
2021-06-14 15:10 ` [PATCH v2 55/57] target/arm: Implement MVE VHCADD Peter Maydell
2021-06-14 22:01   ` Richard Henderson
2021-06-14 15:10 ` [PATCH v2 56/57] target/arm: Implement MVE VADDV Peter Maydell
2021-06-14 15:10 ` [PATCH v2 57/57] target/arm: Make VMOV scalar <-> gpreg beatwise for MVE Peter Maydell
2021-06-14 22:20 ` [PATCH v2 00/57] target/arm: First slice of MVE implementation no-reply
2021-06-14 22:22 ` Richard Henderson
2021-06-21 16:37   ` Peter Maydell
2021-06-21 17:13     ` Richard Henderson

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