diff mbox series

[v2,06/24] target/arm: Adjust gen_aa32_{ld, st}_i64 for align+endianness

Message ID 20201208180118.157911-7-richard.henderson@linaro.org
State Superseded
Headers show
Series target/arm: enforce alignment | expand

Commit Message

Richard Henderson Dec. 8, 2020, 6:01 p.m. UTC 
Adjust the interface to match what has been done to the
TCGv_i32 load/store functions.

This is less obvious, because at present the only user of
these functions, trans_VLDST_multiple, also wants to manipulate
the endianness to speed up loading multiple bytes.  Thus we
retain an "internal" interface which is identical to the
current gen_aa32_{ld,st}_i64 interface.

The "new" interface will gain users as we remove the legacy
interfaces, gen_aa32_ld64 and gen_aa32_st64.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>

---
 target/arm/translate.c          | 78 +++++++++++++++++++--------------
 target/arm/translate-neon.c.inc |  6 ++-
 2 files changed, 49 insertions(+), 35 deletions(-)

-- 
2.25.1

Comments

Peter Maydell Jan. 7, 2021, 4:02 p.m. UTC | #1 
On Tue, 8 Dec 2020 at 18:01, Richard Henderson
<richard.henderson@linaro.org> wrote:
>

> Adjust the interface to match what has been done to the

> TCGv_i32 load/store functions.

>

> This is less obvious, because at present the only user of

> these functions, trans_VLDST_multiple, also wants to manipulate

> the endianness to speed up loading multiple bytes.  Thus we

> retain an "internal" interface which is identical to the

> current gen_aa32_{ld,st}_i64 interface.

>

> The "new" interface will gain users as we remove the legacy

> interfaces, gen_aa32_ld64 and gen_aa32_st64.

>

> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>



Reviewed-by: Peter Maydell <peter.maydell@linaro.org>


thanks
-- PMM
diff mbox series

Patch

diff --git a/target/arm/translate.c b/target/arm/translate.c
index ef9192cf6b..f6007c23a6 100644
--- a/target/arm/translate.c
+++ b/target/arm/translate.c
@@ -916,6 +916,37 @@  static void gen_aa32_st_internal_i32(DisasContext *s, TCGv_i32 val,
     tcg_temp_free(addr);
 }
 
+static void gen_aa32_ld_internal_i64(DisasContext *s, TCGv_i64 val,
+                                     TCGv_i32 a32, int index, MemOp opc)
+{
+    TCGv addr = gen_aa32_addr(s, a32, opc);
+
+    tcg_gen_qemu_ld_i64(val, addr, index, opc);
+
+    /* Not needed for user-mode BE32, where we use MO_BE instead.  */
+    if (!IS_USER_ONLY && s->sctlr_b && (opc & MO_SIZE) == MO_64) {
+        tcg_gen_rotri_i64(val, val, 32);
+    }
+    tcg_temp_free(addr);
+}
+
+static void gen_aa32_st_internal_i64(DisasContext *s, TCGv_i64 val,
+                                     TCGv_i32 a32, int index, MemOp opc)
+{
+    TCGv addr = gen_aa32_addr(s, a32, opc);
+
+    /* Not needed for user-mode BE32, where we use MO_BE instead.  */
+    if (!IS_USER_ONLY && s->sctlr_b && (opc & MO_SIZE) == MO_64) {
+        TCGv_i64 tmp = tcg_temp_new_i64();
+        tcg_gen_rotri_i64(tmp, val, 32);
+        tcg_gen_qemu_st_i64(tmp, addr, index, opc);
+        tcg_temp_free_i64(tmp);
+    } else {
+        tcg_gen_qemu_st_i64(val, addr, index, opc);
+    }
+    tcg_temp_free(addr);
+}
+
 static void gen_aa32_ld_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32,
                             int index, MemOp opc)
 {
@@ -928,6 +959,18 @@  static void gen_aa32_st_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32,
     gen_aa32_st_internal_i32(s, val, a32, index, finalize_memop(s, opc));
 }
 
+static void gen_aa32_ld_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32,
+                            int index, MemOp opc)
+{
+    gen_aa32_ld_internal_i64(s, val, a32, index, finalize_memop(s, opc));
+}
+
+static void gen_aa32_st_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32,
+                            int index, MemOp opc)
+{
+    gen_aa32_st_internal_i64(s, val, a32, index, finalize_memop(s, opc));
+}
+
 #define DO_GEN_LD(SUFF, OPC)                                            \
     static inline void gen_aa32_ld##SUFF(DisasContext *s, TCGv_i32 val, \
                                          TCGv_i32 a32, int index)       \
@@ -942,47 +985,16 @@  static void gen_aa32_st_i32(DisasContext *s, TCGv_i32 val, TCGv_i32 a32,
         gen_aa32_st_i32(s, val, a32, index, OPC);                       \
     }
 
-static void gen_aa32_ld_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32,
-                            int index, MemOp opc)
-{
-    TCGv addr = gen_aa32_addr(s, a32, opc);
-    tcg_gen_qemu_ld_i64(val, addr, index, opc);
-
-    /* Not needed for user-mode BE32, where we use MO_BE instead.  */
-    if (!IS_USER_ONLY && s->sctlr_b && (opc & MO_SIZE) == MO_64) {
-        tcg_gen_rotri_i64(val, val, 32);
-    }
-
-    tcg_temp_free(addr);
-}
-
 static inline void gen_aa32_ld64(DisasContext *s, TCGv_i64 val,
                                  TCGv_i32 a32, int index)
 {
-    gen_aa32_ld_i64(s, val, a32, index, MO_Q | s->be_data);
-}
-
-static void gen_aa32_st_i64(DisasContext *s, TCGv_i64 val, TCGv_i32 a32,
-                            int index, MemOp opc)
-{
-    TCGv addr = gen_aa32_addr(s, a32, opc);
-
-    /* Not needed for user-mode BE32, where we use MO_BE instead.  */
-    if (!IS_USER_ONLY && s->sctlr_b && (opc & MO_SIZE) == MO_64) {
-        TCGv_i64 tmp = tcg_temp_new_i64();
-        tcg_gen_rotri_i64(tmp, val, 32);
-        tcg_gen_qemu_st_i64(tmp, addr, index, opc);
-        tcg_temp_free_i64(tmp);
-    } else {
-        tcg_gen_qemu_st_i64(val, addr, index, opc);
-    }
-    tcg_temp_free(addr);
+    gen_aa32_ld_i64(s, val, a32, index, MO_Q);
 }
 
 static inline void gen_aa32_st64(DisasContext *s, TCGv_i64 val,
                                  TCGv_i32 a32, int index)
 {
-    gen_aa32_st_i64(s, val, a32, index, MO_Q | s->be_data);
+    gen_aa32_st_i64(s, val, a32, index, MO_Q);
 }
 
 DO_GEN_LD(8u, MO_UB)
diff --git a/target/arm/translate-neon.c.inc b/target/arm/translate-neon.c.inc
index c82aa1412e..18d9042130 100644
--- a/target/arm/translate-neon.c.inc
+++ b/target/arm/translate-neon.c.inc
@@ -494,11 +494,13 @@  static bool trans_VLDST_multiple(DisasContext *s, arg_VLDST_multiple *a)
                 int tt = a->vd + reg + spacing * xs;
 
                 if (a->l) {
-                    gen_aa32_ld_i64(s, tmp64, addr, mmu_idx, endian | size);
+                    gen_aa32_ld_internal_i64(s, tmp64, addr, mmu_idx,
+                                             endian | size);
                     neon_store_element64(tt, n, size, tmp64);
                 } else {
                     neon_load_element64(tmp64, tt, n, size);
-                    gen_aa32_st_i64(s, tmp64, addr, mmu_idx, endian | size);
+                    gen_aa32_st_internal_i64(s, tmp64, addr, mmu_idx,
+                                             endian | size);
                 }
                 tcg_gen_add_i32(addr, addr, tmp);
             }