Merge changes between 14282 and r14661 from /fsf/trunk.

git-svn-id: svn://svn.eglibc.org/trunk@14662 7b3dc134-2b1b-0410-93df-9e9f96275f8d

6 files changed, 88 insertions, 38 deletions

diff --git a/libc/crypt/md5.c b/libc/crypt/md5.c
index 922e7cc7e..9bdb8e6aa 100644
--- a/libc/crypt/md5.c
+++ b/libc/crypt/md5.c
@@ -1,6 +1,6 @@
 /* Functions to compute MD5 message digest of files or memory blocks.
    according to the definition of MD5 in RFC 1321 from April 1992.
-   Copyright (C) 1995,1996,1997,1999,2000,2001,2005
+   Copyright (C) 1995,1996,1997,1999,2000,2001,2005,2011
 	Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -123,9 +123,9 @@ md5_finish_ctx (ctx, resbuf)
   memcpy (&ctx->buffer[bytes], fillbuf, pad);
 
   /* Put the 64-bit file length in *bits* at the end of the buffer.  */
-  *(md5_uint32 *) &ctx->buffer[bytes + pad] = SWAP (ctx->total[0] << 3);
-  *(md5_uint32 *) &ctx->buffer[bytes + pad + 4] = SWAP ((ctx->total[1] << 3) |
-							(ctx->total[0] >> 29));
+  ctx->buffer32[(bytes + pad) / 4] = SWAP (ctx->total[0] << 3);
+  ctx->buffer32[(bytes + pad + 4) / 4] = SWAP ((ctx->total[1] << 3) |
+					       (ctx->total[0] >> 29));
 
   /* Process last bytes.  */
   md5_process_block (ctx->buffer, bytes + pad + 8, ctx);
@@ -168,7 +168,7 @@ md5_stream (stream, resblock)
 	}
       while (sum < BLOCKSIZE && n != 0);
       if (n == 0 && ferror (stream))
-        return 1;
+	return 1;
 
       /* If end of file is reached, end the loop.  */
       if (n == 0)
@@ -340,12 +340,12 @@ md5_process_block (buffer, len, ctx)
 
 #define OP(a, b, c, d, s, T)						\
       do								\
-        {								\
+	{								\
 	  a += FF (b, c, d) + (*cwp++ = SWAP (*words)) + T;		\
 	  ++words;							\
 	  CYCLIC (a, s);						\
 	  a += b;							\
-        }								\
+	}								\
       while (0)
 
       /* It is unfortunate that C does not provide an operator for
diff --git a/libc/crypt/md5.h b/libc/crypt/md5.h
index b474a84b8..64a73bdc8 100644
--- a/libc/crypt/md5.h
+++ b/libc/crypt/md5.h
@@ -1,6 +1,6 @@
 /* Declaration of functions and data types used for MD5 sum computing
    library functions.
-   Copyright (C) 1995-1997,1999,2000,2001,2004,2005
+   Copyright (C) 1995-1997,1999,2000,2001,2004,2005,2011
       Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
@@ -68,7 +68,7 @@ typedef uintptr_t md5_uintptr;
      typedef unsigned long md5_uint32;
 #   else
      /* The following line is intended to evoke an error.
-        Using #error is not portable enough.  */
+	Using #error is not portable enough.  */
      "Cannot determine unsigned 32-bit data type."
 #   endif
 #  endif
@@ -88,7 +88,11 @@ struct md5_ctx
 
   md5_uint32 total[2];
   md5_uint32 buflen;
-  char buffer[128] __attribute__ ((__aligned__ (__alignof__ (md5_uint32))));
+  union
+  {
+    char buffer[128];
+    md5_uint32 buffer32[32];
+  };
 };
 
 /*
diff --git a/libc/crypt/sha256.c b/libc/crypt/sha256.c
index 941612e17..c00cfe215 100644
--- a/libc/crypt/sha256.c
+++ b/libc/crypt/sha256.c
@@ -1,6 +1,6 @@
 /* Functions to compute SHA256 message digest of files or memory blocks.
    according to the definition of SHA256 in FIPS 180-2.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -35,12 +35,23 @@
 # ifdef _LIBC
 #  include <byteswap.h>
 #  define SWAP(n) bswap_32 (n)
+#  define SWAP64(n) bswap_64 (n)
 # else
 #  define SWAP(n) \
     (((n) << 24) | (((n) & 0xff00) << 8) | (((n) >> 8) & 0xff00) | ((n) >> 24))
+#  define SWAP64(n) \
+  (((n) << 56)					\
+   | (((n) & 0xff00) << 40)			\
+   | (((n) & 0xff0000) << 24)			\
+   | (((n) & 0xff000000) << 8)			\
+   | (((n) >> 8) & 0xff000000)			\
+   | (((n) >> 24) & 0xff0000)			\
+   | (((n) >> 40) & 0xff00)			\
+   | ((n) >> 56))
 # endif
 #else
 # define SWAP(n) (n)
+# define SWAP64(n) (n)
 #endif
 
 
@@ -89,10 +100,8 @@ sha256_process_block (const void *buffer, size_t len, struct sha256_ctx *ctx)
 
   /* First increment the byte count.  FIPS 180-2 specifies the possible
      length of the file up to 2^64 bits.  Here we only compute the
-     number of bytes.  Do a double word increment.  */
-  ctx->total[0] += len;
-  if (ctx->total[0] < len)
-    ++ctx->total[1];
+     number of bytes.  */
+  ctx->total64 += len;
 
   /* Process all bytes in the buffer with 64 bytes in each round of
      the loop.  */
@@ -186,7 +195,7 @@ __sha256_init_ctx (ctx)
   ctx->H[6] = 0x1f83d9ab;
   ctx->H[7] = 0x5be0cd19;
 
-  ctx->total[0] = ctx->total[1] = 0;
+  ctx->total64 = 0;
   ctx->buflen = 0;
 }
 
@@ -206,17 +215,19 @@ __sha256_finish_ctx (ctx, resbuf)
   size_t pad;
 
   /* Now count remaining bytes.  */
-  ctx->total[0] += bytes;
-  if (ctx->total[0] < bytes)
-    ++ctx->total[1];
+  ctx->total64 += bytes;
 
   pad = bytes >= 56 ? 64 + 56 - bytes : 56 - bytes;
   memcpy (&ctx->buffer[bytes], fillbuf, pad);
 
   /* Put the 64-bit file length in *bits* at the end of the buffer.  */
-  *(uint32_t *) &ctx->buffer[bytes + pad + 4] = SWAP (ctx->total[0] << 3);
-  *(uint32_t *) &ctx->buffer[bytes + pad] = SWAP ((ctx->total[1] << 3) |
-						  (ctx->total[0] >> 29));
+#ifdef _STRING_ARCH_unaligned
+  ctx->buffer64[(bytes + pad) / 8] = SWAP64 (ctx->total64 << 3);
+#else
+  ctx->buffer32[(bytes + pad + 4) / 4] = SWAP (ctx->total[TOTAL64_low] << 3);
+  ctx->buffer32[(bytes + pad) / 4] = SWAP ((ctx->total[TOTAL64_high] << 3) |
+					   (ctx->total[TOTAL64_low] >> 29));
+#endif
 
   /* Process last bytes.  */
   sha256_process_block (ctx->buffer, bytes + pad + 8, ctx);
diff --git a/libc/crypt/sha256.h b/libc/crypt/sha256.h
index be8b0772c..05f2db57e 100644
--- a/libc/crypt/sha256.h
+++ b/libc/crypt/sha256.h
@@ -1,6 +1,6 @@
 /* Declaration of functions and data types used for SHA256 sum computing
    library functions.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -24,6 +24,7 @@
 #include <limits.h>
 #include <stdint.h>
 #include <stdio.h>
+#include <endian.h>
 
 
 /* Structure to save state of computation between the single steps.  */
@@ -31,9 +32,20 @@ struct sha256_ctx
 {
   uint32_t H[8];
 
-  uint32_t total[2];
+  union
+  {
+    uint64_t total64;
+#define TOTAL64_low (1 - (BYTE_ORDER == LITTLE_ENDIAN))
+#define TOTAL64_high (BYTE_ORDER == LITTLE_ENDIAN)
+    uint32_t total[2];
+  };
   uint32_t buflen;
-  char buffer[128] __attribute__ ((__aligned__ (__alignof__ (uint32_t))));
+  union
+  {
+    char buffer[128];
+    uint32_t buffer32[32];
+    uint64_t buffer64[16];
+  };
 };
 
 /* Initialize structure containing state of computation.
diff --git a/libc/crypt/sha512.c b/libc/crypt/sha512.c
index 02127476f..0720b0903 100644
--- a/libc/crypt/sha512.c
+++ b/libc/crypt/sha512.c
@@ -1,6 +1,6 @@
 /* Functions to compute SHA512 message digest of files or memory blocks.
    according to the definition of SHA512 in FIPS 180-2.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -121,9 +121,13 @@ sha512_process_block (const void *buffer, size_t len, struct sha512_ctx *ctx)
   /* First increment the byte count.  FIPS 180-2 specifies the possible
      length of the file up to 2^128 bits.  Here we only compute the
      number of bytes.  Do a double word increment.  */
-  ctx->total[0] += len;
-  if (ctx->total[0] < len)
-    ++ctx->total[1];
+#ifdef USE_TOTAL128
+  ctx->total128 += len;
+#else
+  ctx->total[TOTAL128_low] += len;
+  if (ctx->total[TOTAL128_low] < len)
+    ++ctx->total[TOTAL128_high];
+#endif
 
   /* Process all bytes in the buffer with 128 bytes in each round of
      the loop.  */
@@ -237,17 +241,21 @@ __sha512_finish_ctx (ctx, resbuf)
   size_t pad;
 
   /* Now count remaining bytes.  */
-  ctx->total[0] += bytes;
-  if (ctx->total[0] < bytes)
-    ++ctx->total[1];
+#ifdef USE_TOTAL128
+  ctx->total128 += bytes;
+#else
+  ctx->total[TOTAL128_low] += bytes;
+  if (ctx->total[TOTAL128_low] < bytes)
+    ++ctx->total[TOTAL128_high];
+#endif
 
   pad = bytes >= 112 ? 128 + 112 - bytes : 112 - bytes;
   memcpy (&ctx->buffer[bytes], fillbuf, pad);
 
   /* Put the 128-bit file length in *bits* at the end of the buffer.  */
-  *(uint64_t *) &ctx->buffer[bytes + pad + 8] = SWAP (ctx->total[0] << 3);
-  *(uint64_t *) &ctx->buffer[bytes + pad] = SWAP ((ctx->total[1] << 3) |
-						  (ctx->total[0] >> 61));
+  ctx->buffer64[(bytes + pad + 8) / 8] = SWAP (ctx->total[TOTAL128_low] << 3);
+  ctx->buffer64[(bytes + pad) / 8] = SWAP ((ctx->total[TOTAL128_high] << 3) |
+					   (ctx->total[TOTAL128_low] >> 61));
 
   /* Process last bytes.  */
   sha512_process_block (ctx->buffer, bytes + pad + 16, ctx);
diff --git a/libc/crypt/sha512.h b/libc/crypt/sha512.h
index 9952c5f86..28d63fcfd 100644
--- a/libc/crypt/sha512.h
+++ b/libc/crypt/sha512.h
@@ -1,6 +1,6 @@
 /* Declaration of functions and data types used for SHA512 sum computing
    library functions.
-   Copyright (C) 2007 Free Software Foundation, Inc.
+   Copyright (C) 2007, 2011 Free Software Foundation, Inc.
    This file is part of the GNU C Library.
 
    The GNU C Library is free software; you can redistribute it and/or
@@ -24,6 +24,8 @@
 #include <limits.h>
 #include <stdint.h>
 #include <stdio.h>
+#include <endian.h>
+#include <bits/wordsize.h>
 
 
 /* Structure to save state of computation between the single steps.  */
@@ -31,9 +33,22 @@ struct sha512_ctx
 {
   uint64_t H[8];
 
-  uint64_t total[2];
+  union
+  {
+#if defined __GNUC__ && __WORDSIZE == 64
+# define USE_TOTAL128
+    unsigned int total128 __attribute__ ((__mode__ (TI)));
+#endif
+#define TOTAL128_low (1 - (BYTE_ORDER == LITTLE_ENDIAN))
+#define TOTAL128_high (BYTE_ORDER == LITTLE_ENDIAN)
+    uint64_t total[2];
+  };
   uint64_t buflen;
-  char buffer[256] __attribute__ ((__aligned__ (__alignof__ (uint64_t))));
+  union
+  {
+    char buffer[256];
+    uint64_t buffer64[32];
+  };
 };
 
 /* Initialize structure containing state of computation.