[Mesa-dev] [PATCH 03/18] gallium: add PIPE_OS_ANDROID support

[Chia-I Wu]

Android uses Linux kernel and its own C runtime.  It resembles
PIPE_OS_LINUX a lot with some minor exceptions.
---
 src/gallium/auxiliary/os/os_thread.h  |    2 +-
 src/gallium/auxiliary/util/u_math.h   |   12 +++++++++++-
 src/gallium/include/pipe/p_compiler.h |    2 ++
 src/gallium/include/pipe/p_config.h   |    8 ++++++++
 4 files changed, 22 insertions(+), 2 deletions(-)

diff --git a/src/gallium/auxiliary/os/os_thread.h b/src/gallium/auxiliary/os/os_thread.h
index 8f1245b..d830129 100644
--- a/src/gallium/auxiliary/os/os_thread.h
+++ b/src/gallium/auxiliary/os/os_thread.h
@@ -314,7 +314,7 @@ typedef int64_t pipe_condvar;
  * pipe_barrier
  */
 
-#if defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD) || defined(PIPE_OS_SOLARIS) || defined(PIPE_OS_HAIKU)
+#if (defined(PIPE_OS_LINUX) || defined(PIPE_OS_BSD) || defined(PIPE_OS_SOLARIS) || defined(PIPE_OS_HAIKU)) && !defined(PIPE_OS_ANDROID)
 
 typedef pthread_barrier_t pipe_barrier;
 
diff --git a/src/gallium/auxiliary/util/u_math.h b/src/gallium/auxiliary/util/u_math.h
index 0b52844..837238b 100644
--- a/src/gallium/auxiliary/util/u_math.h
+++ b/src/gallium/auxiliary/util/u_math.h
@@ -199,6 +199,16 @@ roundf(float x)
 #endif /* _MSC_VER */
 
 
+#ifdef PIPE_OS_ANDROID
+
+static INLINE
+double log2(double d)
+{
+   return log(d) / M_LN2;
+}
+
+#endif
+
 
 
 
@@ -409,7 +419,7 @@ unsigned ffs( unsigned u )
 
    return i;
 }
-#elif defined(__MINGW32__)
+#elif defined(__MINGW32__) || defined(PIPE_OS_ANDROID)
 #define ffs __builtin_ffs
 #endif
 
diff --git a/src/gallium/include/pipe/p_compiler.h b/src/gallium/include/pipe/p_compiler.h
index 8c788f4..05de9ff 100644
--- a/src/gallium/include/pipe/p_compiler.h
+++ b/src/gallium/include/pipe/p_compiler.h
@@ -67,7 +67,9 @@ extern "C" {
 
 
 #if !defined(__HAIKU__) && !defined(__USE_MISC)
+#if !defined(PIPE_OS_ANDROID)
 typedef unsigned int       uint;
+#endif
 typedef unsigned short     ushort;
 #endif
 typedef unsigned char      ubyte;
diff --git a/src/gallium/include/pipe/p_config.h b/src/gallium/include/pipe/p_config.h
index 8a5d892..b3a7b33 100644
--- a/src/gallium/include/pipe/p_config.h
+++ b/src/gallium/include/pipe/p_config.h
@@ -154,6 +154,14 @@
 #define PIPE_OS_UNIX
 #endif
 
+/*
+ * Android defines __linux__ so PIPE_OS_LINUX and PIPE_OS_UNIX will also be
+ * defined.
+ */
+#if defined(ANDROID)
+#define PIPE_OS_ANDROID
+#endif
+
 #if defined(__FreeBSD__)
 #define PIPE_OS_FREEBSD
 #define PIPE_OS_BSD
-- 
1.7.5.4