Fix the compile errors for mesa on Android

There are some compile errors for mesa when trying to build gpu_tests
on Android. They were fixed in the mesa upstream.
So this patch combines 3 commits from mesa upstream. They are:
1) Commit eb0ff1a1c0 by chad@chad-versace.us: remove the use of
fpu_control.h
2) Commit 504f92c739 by olvaffe@gmail.com: android has no log2f
nor ffs
3) Commit 497baf4e4a by ian.d.romanick@intel.com: Use C-style
system headers in C++ code to avoid issues with std:: namespace

BUG=138226
TEST=


Review URL: https://chromiumcodereview.appspot.com/10825442

git-svn-id: svn://svn.chromium.org/chrome/trunk/src@152502 0039d316-1c4b-4281-b951-d872f2087c98

6 files changed, 11 insertions, 18 deletions

diff --git a/third_party/mesa/MesaLib/src/glsl/glsl_parser_extras.h b/third_party/mesa/MesaLib/src/glsl/glsl_parser_extras.h
index ddc2138..44e789a 100644
--- a/third_party/mesa/MesaLib/src/glsl/glsl_parser_extras.h
+++ b/third_party/mesa/MesaLib/src/glsl/glsl_parser_extras.h
@@ -31,7 +31,7 @@
 #ifdef __cplusplus
 
 
-#include <cstdlib>
+#include <stdlib.h>
 #include "glsl_symbol_table.h"
 
 enum _mesa_glsl_parser_targets {
diff --git a/third_party/mesa/MesaLib/src/glsl/ir.h b/third_party/mesa/MesaLib/src/glsl/ir.h
index 5aa7c6d..456c43f 100644
--- a/third_party/mesa/MesaLib/src/glsl/ir.h
+++ b/third_party/mesa/MesaLib/src/glsl/ir.h
@@ -26,8 +26,8 @@
 #ifndef IR_H
 #define IR_H
 
-#include <cstdio>
-#include <cstdlib>
+#include <stdio.h>
+#include <stdlib.h>
 
 extern "C" {
 #include <talloc.h>
diff --git a/third_party/mesa/MesaLib/src/mesa/main/compiler.h b/third_party/mesa/MesaLib/src/mesa/main/compiler.h
index 668fd09..907796f 100644
--- a/third_party/mesa/MesaLib/src/mesa/main/compiler.h
+++ b/third_party/mesa/MesaLib/src/mesa/main/compiler.h
@@ -45,9 +45,6 @@
 #include <stdlib.h>
 #include <stdio.h>
 #include <string.h>
-#if defined(__linux__) && defined(__i386__)
-#include <fpu_control.h>
-#endif
 #include <float.h>
 #include <stdarg.h>
 
diff --git a/third_party/mesa/MesaLib/src/mesa/main/debug.c b/third_party/mesa/MesaLib/src/mesa/main/debug.c
index 526145a..bcbd837 100644
--- a/third_party/mesa/MesaLib/src/mesa/main/debug.c
+++ b/third_party/mesa/MesaLib/src/mesa/main/debug.c
@@ -216,17 +216,6 @@ static void add_debug_flags( const char *debug )
    if (strstr(debug, "flush"))
       MESA_DEBUG_FLAGS |= DEBUG_ALWAYS_FLUSH;
 
-#if defined(_FPU_GETCW) && defined(_FPU_SETCW)
-   if (strstr(debug, "fpexceptions")) {
-      /* raise FP exceptions */
-      fpu_control_t mask;
-      _FPU_GETCW(mask);
-      mask &= ~(_FPU_MASK_IM | _FPU_MASK_DM | _FPU_MASK_ZM
-                | _FPU_MASK_OM | _FPU_MASK_UM);
-      _FPU_SETCW(mask);
-   }
-#endif
-
 #else
    (void) debug;
 #endif
diff --git a/third_party/mesa/MesaLib/src/mesa/main/imports.c b/third_party/mesa/MesaLib/src/mesa/main/imports.c
index 46e5c93..2cbb09d 100644
--- a/third_party/mesa/MesaLib/src/mesa/main/imports.c
+++ b/third_party/mesa/MesaLib/src/mesa/main/imports.c
@@ -756,7 +756,8 @@ _mesa_strdup( const char *s )
 float
 _mesa_strtof( const char *s, char **end )
 {
-#if defined(_GNU_SOURCE) && !defined(__CYGWIN__) && !defined(__FreeBSD__)
+#if defined(_GNU_SOURCE) && !defined(__CYGWIN__) && !defined(__FreeBSD__) && \
+    !defined(ANDROID)
    static locale_t loc = NULL;
    if (!loc) {
       loc = newlocale(LC_CTYPE_MASK, "C", NULL);
diff --git a/third_party/mesa/MesaLib/src/mesa/main/imports.h b/third_party/mesa/MesaLib/src/mesa/main/imports.h
index 751f206..3136b1e 100644
--- a/third_party/mesa/MesaLib/src/mesa/main/imports.h
+++ b/third_party/mesa/MesaLib/src/mesa/main/imports.h
@@ -134,7 +134,13 @@ typedef union { GLfloat f; GLint i; } fi_type;
 #define exp2f(f) ((float) exp2(f))
 #define floorf(f) ((float) floor(f))
 #define logf(f) ((float) log(f))
+
+#if defined(ANDROID)
+#define log2f(f) (logf(f) * (float) (1.0 / M_LN2))
+#else
 #define log2f(f) ((float) log2(f))
+#endif
+
 #define powf(x,y) ((float) pow(x,y))
 #define sinf(f) ((float) sin(f))
 #define sinhf(f) ((float) sinh(f))