Use ELFOSABI_NONE instead of ELFOSABI_LINUX.

[oota-llvm.git] / include / llvm / Support / Endian.h

diff --git a/include/llvm/Support/Endian.h b/include/llvm/Support/Endian.h
index 5256ef9fce59fb3314b763991ac1c5c0dbe6ab8c..fd59009e0d3a60f843c4573c255f5294b66b56eb 100644 (file)
--- a/include/llvm/Support/Endian.h
+++ b/include/llvm/Support/Endian.h
@@ -34,13 +34,15 @@ namespace detail {
 } // end namespace detail
 
 namespace endian {
+/// Swap the bytes of value to match the given endianness.
 template<typename value_type, endianness endian>
 inline value_type byte_swap(value_type value) {
   if (endian != native && sys::IsBigEndianHost != (endian == big))
-    return sys::SwapByteOrder(value);
+    sys::swapByteOrder(value);
   return value;
 }
 
+/// Read a value of a particular endianness from memory.
 template<typename value_type,
          endianness endian,
          std::size_t alignment>
@@ -54,6 +56,17 @@ inline value_type read(const void *memory) {
   return byte_swap<value_type, endian>(ret);
 }
 
+/// Read a value of a particular endianness from a buffer, and increment the
+/// buffer past that value.
+template<typename value_type, endianness endian, std::size_t alignment,
+         typename CharT>
+inline value_type readNext(const CharT *&memory) {
+  value_type ret = read<value_type, endian, alignment>(memory);
+  memory += sizeof(value_type);
+  return ret;
+}
+
+/// Write a value to memory with a particular endianness.
 template<typename value_type,
          endianness endian,
          std::size_t alignment>
@@ -81,14 +94,49 @@ struct packed_endian_specific_integral {
       (void*)Value.buffer, newValue);
   }
 
+  packed_endian_specific_integral &operator+=(value_type newValue) {
+    *this = *this + newValue;
+    return *this;
+  }
+
+  packed_endian_specific_integral &operator-=(value_type newValue) {
+    *this = *this - newValue;
+    return *this;
+  }
+
+  packed_endian_specific_integral &operator|=(value_type newValue) {
+    *this = *this | newValue;
+    return *this;
+  }
+
+  packed_endian_specific_integral &operator&=(value_type newValue) {
+    *this = *this & newValue;
+    return *this;
+  }
+
 private:
   AlignedCharArray<PickAlignment<value_type, alignment>::value,
                    sizeof(value_type)> Value;
+
+public:
+  struct ref {
+    explicit ref(void *Ptr) : Ptr(Ptr) {}
+
+    operator value_type() const {
+      return endian::read<value_type, endian, alignment>(Ptr);
+    }
+
+    void operator=(value_type NewValue) {
+      endian::write<value_type, endian, alignment>(Ptr, NewValue);
+    }
+
+  private:
+    void *Ptr;
+  };
 };
+
 } // end namespace detail
 
-typedef detail::packed_endian_specific_integral
-                  <uint8_t, little, unaligned>  ulittle8_t;
 typedef detail::packed_endian_specific_integral
                   <uint16_t, little, unaligned> ulittle16_t;
 typedef detail::packed_endian_specific_integral
@@ -96,8 +144,6 @@ typedef detail::packed_endian_specific_integral
 typedef detail::packed_endian_specific_integral
                   <uint64_t, little, unaligned> ulittle64_t;
 
-typedef detail::packed_endian_specific_integral
-                   <int8_t, little, unaligned>  little8_t;
 typedef detail::packed_endian_specific_integral
                    <int16_t, little, unaligned> little16_t;
 typedef detail::packed_endian_specific_integral
@@ -105,8 +151,6 @@ typedef detail::packed_endian_specific_integral
 typedef detail::packed_endian_specific_integral
                    <int64_t, little, unaligned> little64_t;
 
-typedef detail::packed_endian_specific_integral
-                    <uint8_t, little, aligned>  aligned_ulittle8_t;
 typedef detail::packed_endian_specific_integral
                     <uint16_t, little, aligned> aligned_ulittle16_t;
 typedef detail::packed_endian_specific_integral
@@ -114,8 +158,6 @@ typedef detail::packed_endian_specific_integral
 typedef detail::packed_endian_specific_integral
                     <uint64_t, little, aligned> aligned_ulittle64_t;
 
-typedef detail::packed_endian_specific_integral
-                     <int8_t, little, aligned>  aligned_little8_t;
 typedef detail::packed_endian_specific_integral
                      <int16_t, little, aligned> aligned_little16_t;
 typedef detail::packed_endian_specific_integral
@@ -123,8 +165,6 @@ typedef detail::packed_endian_specific_integral
 typedef detail::packed_endian_specific_integral
                      <int64_t, little, aligned> aligned_little64_t;
 
-typedef detail::packed_endian_specific_integral
-                  <uint8_t, big, unaligned>     ubig8_t;
 typedef detail::packed_endian_specific_integral
                   <uint16_t, big, unaligned>    ubig16_t;
 typedef detail::packed_endian_specific_integral
@@ -132,8 +172,6 @@ typedef detail::packed_endian_specific_integral
 typedef detail::packed_endian_specific_integral
                   <uint64_t, big, unaligned>    ubig64_t;
 
-typedef detail::packed_endian_specific_integral
-                   <int8_t, big, unaligned>     big8_t;
 typedef detail::packed_endian_specific_integral
                    <int16_t, big, unaligned>    big16_t;
 typedef detail::packed_endian_specific_integral
@@ -141,8 +179,6 @@ typedef detail::packed_endian_specific_integral
 typedef detail::packed_endian_specific_integral
                    <int64_t, big, unaligned>    big64_t;
 
-typedef detail::packed_endian_specific_integral
-                    <uint8_t, big, aligned>     aligned_ubig8_t;
 typedef detail::packed_endian_specific_integral
                     <uint16_t, big, aligned>    aligned_ubig16_t;
 typedef detail::packed_endian_specific_integral
@@ -150,8 +186,6 @@ typedef detail::packed_endian_specific_integral
 typedef detail::packed_endian_specific_integral
                     <uint64_t, big, aligned>    aligned_ubig64_t;
 
-typedef detail::packed_endian_specific_integral
-                     <int8_t, big, aligned>     aligned_big8_t;
 typedef detail::packed_endian_specific_integral
                      <int16_t, big, aligned>    aligned_big16_t;
 typedef detail::packed_endian_specific_integral
@@ -172,7 +206,23 @@ typedef detail::packed_endian_specific_integral
                    <int32_t, native, unaligned> unaligned_int32_t;
 typedef detail::packed_endian_specific_integral
                    <int64_t, native, unaligned> unaligned_int64_t;
-} // end namespace llvm
+
+namespace endian {
+inline uint16_t read16le(const void *p) { return *(const ulittle16_t *)p; }
+inline uint32_t read32le(const void *p) { return *(const ulittle32_t *)p; }
+inline uint64_t read64le(const void *p) { return *(const ulittle64_t *)p; }
+inline uint16_t read16be(const void *p) { return *(const ubig16_t *)p; }
+inline uint32_t read32be(const void *p) { return *(const ubig32_t *)p; }
+inline uint64_t read64be(const void *p) { return *(const ubig64_t *)p; }
+
+inline void write16le(void *p, uint16_t v) { *(ulittle16_t *)p = v; }
+inline void write32le(void *p, uint32_t v) { *(ulittle32_t *)p = v; }
+inline void write64le(void *p, uint64_t v) { *(ulittle64_t *)p = v; }
+inline void write16be(void *p, uint16_t v) { *(ubig16_t *)p = v; }
+inline void write32be(void *p, uint32_t v) { *(ubig32_t *)p = v; }
+inline void write64be(void *p, uint64_t v) { *(ubig64_t *)p = v; }
+} // end namespace endian
 } // end namespace support
+} // end namespace llvm
 
 #endif