From 666b42f73bd1f516657b206ef738108825bf239f Mon Sep 17 00:00:00 2001
From: Behdad Esfahbod <behdad@behdad.org>
Date: Tue, 14 Oct 2014 21:24:59 -0700
Subject: [PATCH] Move macros around

Fixes https://bugs.freedesktop.org/show_bug.cgi?id=84491
---
 src/hb-open-type-private.hh | 63 ++++++++++++++++++++++++++++++++++++++-------
 src/hb-private.hh           | 41 -----------------------------
 src/hb-uniscribe.cc         |  6 +++++
 3 files changed, 60 insertions(+), 50 deletions(-)

diff --git a/src/hb-open-type-private.hh b/src/hb-open-type-private.hh
index 475187b..9807569 100644
--- a/src/hb-open-type-private.hh
+++ b/src/hb-open-type-private.hh
@@ -533,9 +533,21 @@ template <typename Type>
 struct BEInt<Type, 2>
 {
   public:
-  inline void set (Type i) { hb_be_uint16_put (v,i); }
-  inline operator Type (void) const { return hb_be_uint16_get (v); }
-  inline bool operator == (const BEInt<Type, 2>& o) const { return hb_be_uint16_eq (v, o.v); }
+  inline void set (Type V)
+  {
+    v[0] = (V >>  8) & 0xFF;
+    v[1] = (V      ) & 0xFF;
+  }
+  inline operator Type (void) const
+  {
+    return (v[0] <<  8)
+         + (v[1]      );
+  }
+  inline bool operator == (const BEInt<Type, 2>& o) const
+  {
+    return v[0] == o.v[0]
+        && v[1] == o.v[1];
+  }
   inline bool operator != (const BEInt<Type, 2>& o) const { return !(*this == o); }
   private: uint8_t v[2];
 };
@@ -543,9 +555,27 @@ template <typename Type>
 struct BEInt<Type, 4>
 {
   public:
-  inline void set (Type i) { hb_be_uint32_put (v,i); }
-  inline operator Type (void) const { return hb_be_uint32_get (v); }
-  inline bool operator == (const BEInt<Type, 4>& o) const { return hb_be_uint32_eq (v, o.v); }
+  inline void set (Type V)
+  {
+    v[0] = (V >> 24) & 0xFF;
+    v[1] = (V >> 16) & 0xFF;
+    v[2] = (V >>  8) & 0xFF;
+    v[3] = (V      ) & 0xFF;
+  }
+  inline operator Type (void) const
+  {
+    return (v[0] << 24)
+         + (v[1] << 16)
+         + (v[2] <<  8)
+         + (v[3]      );
+  }
+  inline bool operator == (const BEInt<Type, 4>& o) const
+  {
+    return v[0] == o.v[0]
+        && v[1] == o.v[1]
+        && v[2] == o.v[2]
+        && v[3] == o.v[3];
+  }
   inline bool operator != (const BEInt<Type, 4>& o) const { return !(*this == o); }
   private: uint8_t v[4];
 };
@@ -553,9 +583,24 @@ template <typename Type>
 struct BEInt<Type, 3>
 {
   public:
-  inline void set (Type i) { hb_be_uint24_put (v,i); }
-  inline operator Type (void) const { return hb_be_uint24_get (v); }
-  inline bool operator == (const BEInt<Type, 3>& o) const { return hb_be_uint24_eq (v, o.v); }
+  inline void set (Type V)
+  {
+    v[0] = (V >> 16) & 0xFF;
+    v[1] = (V >>  8) & 0xFF;
+    v[2] = (V      ) & 0xFF;
+  }
+  inline operator Type (void) const
+  {
+    return (v[0] << 16)
+         + (v[1] <<  8)
+         + (v[2]      );
+  }
+  inline bool operator == (const BEInt<Type, 3>& o) const
+  {
+    return v[0] == o.v[0]
+        && v[1] == o.v[1]
+        && v[2] == o.v[2];
+  }
   inline bool operator != (const BEInt<Type, 3>& o) const { return !(*this == o); }
   private: uint8_t v[3];
 };
diff --git a/src/hb-private.hh b/src/hb-private.hh
index 40d02ea..cd02e2b 100644
--- a/src/hb-private.hh
+++ b/src/hb-private.hh
@@ -539,47 +539,6 @@ struct hb_lockable_set_t
 };
 
 
-
-
-/* Big-endian handling */
-
-static inline uint16_t hb_be_uint16 (const uint16_t v)
-{
-  const uint8_t *V = (const uint8_t *) &v;
-  return (V[0] << 8) | V[1];
-}
-
-static inline uint16_t hb_uint16_swap (const uint16_t v)
-{
-  return (v >> 8) | (v << 8);
-}
-
-static inline uint32_t hb_uint32_swap (const uint32_t v)
-{
-  return (hb_uint16_swap (v) << 16) | hb_uint16_swap (v >> 16);
-}
-
-/* Note, of the following macros, uint16_get is the one called many many times.
- * If there is any optimizations to be done, it's in that macro.  However, I
- * already confirmed that on my T400 ThinkPad at least, using bswap_16(), which
- * results in a single ror instruction, does NOT speed this up.  In fact, it
- * resulted in a minor slowdown.  At any rate, note that v may not be correctly
- * aligned, so I think the current implementation is optimal.
- */
-
-#define hb_be_uint16_put(v,V)	HB_STMT_START { v[0] = (V>>8); v[1] = (V); } HB_STMT_END
-#define hb_be_uint16_get(v)	(uint16_t) ((v[0] << 8) + v[1])
-#define hb_be_uint16_eq(a,b)	(a[0] == b[0] && a[1] == b[1])
-
-#define hb_be_uint32_put(v,V)	HB_STMT_START { v[0] = (V>>24); v[1] = (V>>16); v[2] = (V>>8); v[3] = (V); } HB_STMT_END
-#define hb_be_uint32_get(v)	(uint32_t) ((v[0] << 24) + (v[1] << 16) + (v[2] << 8) + v[3])
-#define hb_be_uint32_eq(a,b)	(a[0] == b[0] && a[1] == b[1] && a[2] == b[2] && a[3] == b[3])
-
-#define hb_be_uint24_put(v,V)	HB_STMT_START { v[0] = (V>>16); v[1] = (V>>8); v[2] = (V); } HB_STMT_END
-#define hb_be_uint24_get(v)	(uint32_t) ((v[0] << 16) + (v[1] << 8) + v[2])
-#define hb_be_uint24_eq(a,b)	(a[0] == b[0] && a[1] == b[1] && a[2] == b[2])
-
-
 /* ASCII tag/character handling */
 
 static inline bool ISALPHA (unsigned char c)
diff --git a/src/hb-uniscribe.cc b/src/hb-uniscribe.cc
index 74ae3a3..e7bcad2 100644
--- a/src/hb-uniscribe.cc
+++ b/src/hb-uniscribe.cc
@@ -43,6 +43,12 @@
 #endif
 
 
+static inline uint16_t hb_uint16_swap (const uint16_t v)
+{ return (v >> 8) | (v << 8); }
+static inline uint32_t hb_uint32_swap (const uint32_t v)
+{ return (hb_uint16_swap (v) << 16) | hb_uint16_swap (v >> 16); }
+
+
 typedef HRESULT (WINAPI *SIOT) /*ScriptItemizeOpenType*/(
   const WCHAR *pwcInChars,
   int cInChars,
-- 
2.7.4