1 files changed, 76 insertions, 5 deletions
diff --git a/include/exec/tswap.h b/include/exec/tswap.h
index ecd4faef01..84060a4999 100644
--- a/include/exec/tswap.h
+++ b/include/exec/tswap.h
@@ -13,13 +13,14 @@
 /**
  * target_words_bigendian:
  * Returns true if the (default) endianness of the target is big endian,
- * false otherwise. Note that in target-specific code, you can use
- * TARGET_BIG_ENDIAN directly instead. On the other hand, common
- * code should normally never need to know about the endianness of the
- * target, so please do *not* use this function unless you know very well
- * what you are doing!
+ * false otherwise. Common code should normally never need to know about the
+ * endianness of the target, so please do *not* use this function unless you
+ * know very well what you are doing!
  */
 bool target_words_bigendian(void);
+#ifdef COMPILING_PER_TARGET
+#define target_words_bigendian()  TARGET_BIG_ENDIAN
+#endif
 
 /*
  * If we're in target-specific code, we can hard-code the swapping
@@ -79,4 +80,74 @@ static inline void tswap64s(uint64_t *s)
     }
 }
 
+/* Return ld{word}_{le,be}_p following target endianness. */
+#define LOAD_IMPL(word, args...)                    \
+do {                                                \
+    if (target_words_bigendian()) {                 \
+        return glue(glue(ld, word), _be_p)(args);   \
+    } else {                                        \
+        return glue(glue(ld, word), _le_p)(args);   \
+    }                                               \
+} while (0)
+
+static inline int lduw_p(const void *ptr)
+{
+    LOAD_IMPL(uw, ptr);
+}
+
+static inline int ldsw_p(const void *ptr)
+{
+    LOAD_IMPL(sw, ptr);
+}
+
+static inline int ldl_p(const void *ptr)
+{
+    LOAD_IMPL(l, ptr);
+}
+
+static inline uint64_t ldq_p(const void *ptr)
+{
+    LOAD_IMPL(q, ptr);
+}
+
+static inline uint64_t ldn_p(const void *ptr, int sz)
+{
+    LOAD_IMPL(n, ptr, sz);
+}
+
+#undef LOAD_IMPL
+
+/* Call st{word}_{le,be}_p following target endianness. */
+#define STORE_IMPL(word, args...)           \
+do {                                        \
+    if (target_words_bigendian()) {         \
+        glue(glue(st, word), _be_p)(args);  \
+    } else {                                \
+        glue(glue(st, word), _le_p)(args);  \
+    }                                       \
+} while (0)
+
+
+static inline void stw_p(void *ptr, uint16_t v)
+{
+    STORE_IMPL(w, ptr, v);
+}
+
+static inline void stl_p(void *ptr, uint32_t v)
+{
+    STORE_IMPL(l, ptr, v);
+}
+
+static inline void stq_p(void *ptr, uint64_t v)
+{
+    STORE_IMPL(q, ptr, v);
+}
+
+static inline void stn_p(void *ptr, int sz, uint64_t v)
+{
+    STORE_IMPL(n, ptr, sz, v);
+}
+
+#undef STORE_IMPL
+
 #endif  /* TSWAP_H */