[PATCH v2 41/50] target/hexagon: Add get_tb_mmu_index()

Adds a functions to return the current mmu index given tb_flags of the
current translation block.  Required by helper-to-tcg in order to
retrieve the mmu index for memory operations without changing the
signature of helper functions.

Signed-off-by: Anton Johansson <[email protected]>
---
 target/hexagon/translate.c | 12 ++++++++++++
 target/hexagon/translate.h |  4 ++++
 2 files changed, 16 insertions(+)

diff --git a/target/hexagon/translate.c b/target/hexagon/translate.c
index 199b4f8c2e..bfd84bba4e 100644
--- a/target/hexagon/translate.c
+++ b/target/hexagon/translate.c
@@ -128,6 +128,18 @@ intptr_t ctx_tmp_vreg_off(DisasContext *ctx, int regnum,
     return offset;
 }
 
+#if defined(TARGET_HELPER_TO_TCG)
+/*
+ * Returns the current mmu index given tb_flags of the current translation
+ * block.  Required by helper-to-tcg in order to retrieve the mmu index for
+ * memory operations without changing the signature of helper functions.
+ */
+int get_tb_mmu_index(uint32_t flags)
+{
+    return FIELD_EX32(flags, TB_FLAGS, MMU_INDEX);
+}
+#endif
+
 static void gen_exception(int excp, uint32_t PC)
 {
     gen_helper_raise_exception(tcg_env, tcg_constant_i32(excp),
diff --git a/target/hexagon/translate.h b/target/hexagon/translate.h
index 2fca157553..6cf3b2fe3b 100644
--- a/target/hexagon/translate.h
+++ b/target/hexagon/translate.h
@@ -345,4 +345,8 @@ FIELD(PROBE_PKT_SCALAR_HVX_STORES, MMU_IDX,        5, 2)
 
 void gen_framecheck(DisasContext *ctx, TCGv_i32 addr, TCGv_i32 ea);
 
+#if defined(TARGET_HELPER_TO_TCG)
+int get_tb_mmu_index(uint32_t flags);
+#endif
+
 #endif
-- 
2.52.0