Add compiler.h macro header extracted from build.h

All this is just standard C that the user should not touch, so it doesn't
really make sense to have it in the build.h template file.

Remove BOTAN_TARGET_CPU_HAS_KNOWN_ENDIANESS - only used twice (in loadstor.h)
and that code is clearer without it.

1 files changed, 6 insertions, 10 deletions

diff --git a/src/lib/utils/loadstor.h b/src/lib/utils/loadstor.h
index 9ae9fda0e..15ff6a708 100644
--- a/src/lib/utils/loadstor.h
+++ b/src/lib/utils/loadstor.h
@@ -324,10 +324,10 @@ inline void load_le(T out[],
    {
    if(count > 0)
       {
-#if defined(BOTAN_TARGET_CPU_HAS_KNOWN_ENDIANNESS)
+#if defined(BOTAN_TARGET_CPU_IS_LITTLE_ENDIAN)
+      std::memcpy(out, in, sizeof(T)*count);
+#elif defined(BOTAN_TARGET_CPU_IS_BIG_ENDIAN)
       std::memcpy(out, in, sizeof(T)*count);
-
-#if defined(BOTAN_TARGET_CPU_IS_BIG_ENDIAN)
       const size_t blocks = count - (count % 4);
       const size_t left = count - blocks;
 
@@ -336,8 +336,6 @@ inline void load_le(T out[],
 
       for(size_t i = 0; i != left; ++i)
          out[blocks+i] = reverse_bytes(out[blocks+i]);
-#endif
-
 #else
       for(size_t i = 0; i != count; ++i)
          out[i] = load_le<T>(in, i);
@@ -416,10 +414,10 @@ inline void load_be(T out[],
    {
    if(count > 0)
       {
-#if defined(BOTAN_TARGET_CPU_HAS_KNOWN_ENDIANNESS)
+#if defined(BOTAN_TARGET_CPU_IS_BIG_ENDIAN)
+      std::memcpy(out, in, sizeof(T)*count);
+#elif defined(BOTAN_TARGET_CPU_IS_LITTLE_ENDIAN)
       std::memcpy(out, in, sizeof(T)*count);
-
-#if defined(BOTAN_TARGET_CPU_IS_LITTLE_ENDIAN)
       const size_t blocks = count - (count % 4);
       const size_t left = count - blocks;
 
@@ -428,8 +426,6 @@ inline void load_be(T out[],
 
       for(size_t i = 0; i != left; ++i)
          out[blocks+i] = reverse_bytes(out[blocks+i]);
-#endif
-
 #else
       for(size_t i = 0; i != count; ++i)
          out[i] = load_be<T>(in, i);