Fix <endian.h> and <sys/endian.h>

See 4fa35d8ae80c175425e9525831d7b6a71a3ada60 Change-Id: Ia14386f2e762fd7c0a1fc8f3e7cf8c0ce05b1dd5
2012-12-12 10:04:53 +08:00
parent d8aa2895f4
commit ab13dd0e7a
7 changed files with 12 additions and 14 deletions
--- a/ndk/platforms/android-3/arch-arm/include/machine/endian.h
+++ b/ndk/platforms/android-3/arch-arm/include/machine/endian.h
@@ -0,0 +1,89 @@
+/*	$OpenBSD: endian.h,v 1.3 2005/12/13 00:35:23 millert Exp $	*/
+
+/*
+ * Copyright (C) 2010 The Android Open Source Project
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *  * Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *  * Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
+ * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
+ * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
+ * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
+ * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
+ * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
+ * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ */
+
+#ifndef _ARM_ENDIAN_H_
+#define _ARM_ENDIAN_H_
+
+#ifdef __GNUC__
+
+/*
+ * REV and REV16 weren't available on ARM5 or ARM4.
+ * We don't include <machine/cpu-features.h> because it pollutes the
+ * namespace with macros like PLD.
+ */
+#if !defined __ARM_ARCH_5__ && !defined __ARM_ARCH_5T__ && \
+    !defined __ARM_ARCH_5TE__ && !defined __ARM_ARCH_5TEJ__ && \
+    !defined __ARM_ARCH_4T__ && !defined __ARM_ARCH_4__
+
+/* According to RealView Assembler User's Guide, REV and REV16 are available
+ * in Thumb code and 16-bit instructions when used in Thumb-2 code.
+ *
+ * REV Rd, Rm
+ *   Rd and Rm must both be Lo registers.
+ *
+ * REV16 Rd, Rm
+ *   Rd and Rm must both be Lo registers.
+ *
+ * The +l constraint takes care of this without constraining us in ARM mode.
+ */
+#define __swap16md(x) ({                                        \
+    register u_int16_t _x = (x);                                \
+    __asm volatile ("rev16 %0, %0" : "+l" (_x));                \
+    _x;                                                         \
+})
+
+#define __swap32md(x) ({                                        \
+    register u_int32_t _x = (x);                                \
+    __asm volatile ("rev %0, %0" : "+l" (_x));                  \
+    _x;                                                         \
+})
+
+#define __swap64md(x) ({                                        \
+    u_int64_t _swap64md_x = (x);                                \
+    (u_int64_t) __swap32md(_swap64md_x >> 32) |                 \
+        (u_int64_t) __swap32md(_swap64md_x & 0xffffffff) << 32; \
+})
+
+/* Tell sys/endian.h we have MD variants of the swap macros.  */
+#define MD_SWAP
+
+#endif  /* __ARM_ARCH__ */
+#endif  /* __GNUC__ */
+
+#if defined(__ARMEB__)
+#define _BYTE_ORDER _BIG_ENDIAN
+#else
+#define _BYTE_ORDER _LITTLE_ENDIAN
+#endif
+#define __STRICT_ALIGNMENT
+#include <sys/types.h>
+#include <sys/endian.h>
+
+#endif  /* !_ARM_ENDIAN_H_ */