[PATCH v2 1/2] tcg: Add tcg_gen_{ld,st}_i128

[Richard Henderson <richard.henderson@linaro.org>]

Do not require the translators to jump through concat and
extract of i64 in order to move values to and from  env.

Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
---
 include/tcg/tcg-op-common.h |  3 +++
 tcg/tcg-op.c                | 22 ++++++++++++++++++++++
 2 files changed, 25 insertions(+)

diff --git a/include/tcg/tcg-op-common.h b/include/tcg/tcg-op-common.h
index 2048f92b5e..56d4e9cb9f 100644
--- a/include/tcg/tcg-op-common.h
+++ b/include/tcg/tcg-op-common.h
@@ -747,6 +747,9 @@ void tcg_gen_mov_i128(TCGv_i128 dst, TCGv_i128 src);
 void tcg_gen_extr_i128_i64(TCGv_i64 lo, TCGv_i64 hi, TCGv_i128 arg);
 void tcg_gen_concat_i64_i128(TCGv_i128 ret, TCGv_i64 lo, TCGv_i64 hi);
 
+void tcg_gen_ld_i128(TCGv_i128 ret, TCGv_ptr base, tcg_target_long offset);
+void tcg_gen_st_i128(TCGv_i128 val, TCGv_ptr base, tcg_target_long offset);
+
 static inline void tcg_gen_concat32_i64(TCGv_i64 ret, TCGv_i64 lo, TCGv_i64 hi)
 {
     tcg_gen_deposit_i64(ret, lo, hi, 32, 32);
diff --git a/tcg/tcg-op.c b/tcg/tcg-op.c
index 393dbcd01c..12bcedf42f 100644
--- a/tcg/tcg-op.c
+++ b/tcg/tcg-op.c
@@ -2880,6 +2880,28 @@ void tcg_gen_mov_i128(TCGv_i128 dst, TCGv_i128 src)
     }
 }
 
+void tcg_gen_ld_i128(TCGv_i128 ret, TCGv_ptr base, tcg_target_long offset)
+{
+    if (HOST_BIG_ENDIAN) {
+        tcg_gen_ld_i64(TCGV128_HIGH(ret), base, offset);
+        tcg_gen_ld_i64(TCGV128_LOW(ret), base, offset + 8);
+    } else {
+        tcg_gen_ld_i64(TCGV128_LOW(ret), base, offset);
+        tcg_gen_ld_i64(TCGV128_HIGH(ret), base, offset + 8);
+    }
+}
+
+void tcg_gen_st_i128(TCGv_i128 val, TCGv_ptr base, tcg_target_long offset)
+{
+    if (HOST_BIG_ENDIAN) {
+        tcg_gen_st_i64(TCGV128_HIGH(val), base, offset);
+        tcg_gen_st_i64(TCGV128_LOW(val), base, offset + 8);
+    } else {
+        tcg_gen_st_i64(TCGV128_LOW(val), base, offset);
+        tcg_gen_st_i64(TCGV128_HIGH(val), base, offset + 8);
+    }
+}
+
 /* QEMU specific operations.  */
 
 void tcg_gen_exit_tb(const TranslationBlock *tb, unsigned idx)
-- 
2.34.1