Adding upstream version 2.06.upstream/2.06upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 435 insertions, 0 deletions

diff --git a/grub-core/lib/libgcrypt-grub/cipher/bufhelp.h b/grub-core/lib/libgcrypt-grub/cipher/bufhelp.h
new file mode 100644
index 0000000..89471e6
--- /dev/null
+++ b/grub-core/lib/libgcrypt-grub/cipher/bufhelp.h
@@ -0,0 +1,435 @@
+/* This file was automatically imported with 
+   import_gcry.py. Please don't modify it */
+#include <grub/dl.h>
+/* bufhelp.h  -  Some buffer manipulation helpers
+ * Copyright (C) 2012 Jussi Kivilinna <jussi.kivilinna@mbnet.fi>
+ *
+ * This file is part of Libgcrypt.
+ *
+ * Libgcrypt is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Lesser General Public License as
+ * published by the Free Software Foundation; either version 2.1 of
+ * the License, or (at your option) any later version.
+ *
+ * Libgcrypt is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with this program; if not, see <http://www.gnu.org/licenses/>.
+ */
+#ifndef GCRYPT_BUFHELP_H
+#define GCRYPT_BUFHELP_H
+
+
+#include "bithelp.h"
+
+
+#undef BUFHELP_FAST_UNALIGNED_ACCESS
+#if defined(HAVE_GCC_ATTRIBUTE_PACKED) && \
+    defined(HAVE_GCC_ATTRIBUTE_ALIGNED) && \
+    (defined(__i386__) || defined(__x86_64__) || \
+     (defined(__arm__) && defined(__ARM_FEATURE_UNALIGNED)) || \
+     defined(__aarch64__))
+/* These architectures are able of unaligned memory accesses and can
+   handle those fast.
+ */
+# define BUFHELP_FAST_UNALIGNED_ACCESS 1
+#endif
+
+
+#ifdef BUFHELP_FAST_UNALIGNED_ACCESS
+/* Define type with one-byte alignment on architectures with fast unaligned
+   memory accesses.
+ */
+typedef struct bufhelp_int_s
+{
+  uintptr_t a;
+} __attribute__((packed, aligned(1))) bufhelp_int_t;
+#else
+/* Define type with default alignment for other architectures (unaligned
+   accessed handled in per byte loops).
+ */
+typedef struct bufhelp_int_s
+{
+  uintptr_t a;
+} bufhelp_int_t;
+#endif
+
+
+/* Optimized function for small buffer copying */
+static inline void
+buf_cpy(void *_dst, const void *_src, size_t len)
+{
+#if __GNUC__ >= 4 && (defined(__x86_64__) || defined(__i386__))
+  /* For AMD64 and i386, memcpy is faster.  */
+  memcpy(_dst, _src, len);
+#else
+  byte *dst = _dst;
+  const byte *src = _src;
+  bufhelp_int_t *ldst;
+  const bufhelp_int_t *lsrc;
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+  const unsigned int longmask = sizeof(bufhelp_int_t) - 1;
+
+  /* Skip fast processing if buffers are unaligned.  */
+  if (((uintptr_t)dst | (uintptr_t)src) & longmask)
+    goto do_bytes;
+#endif
+
+  ldst = (bufhelp_int_t *)(void *)dst;
+  lsrc = (const bufhelp_int_t *)(const void *)src;
+
+  for (; len >= sizeof(bufhelp_int_t); len -= sizeof(bufhelp_int_t))
+    (ldst++)->a = (lsrc++)->a;
+
+  dst = (byte *)ldst;
+  src = (const byte *)lsrc;
+
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+do_bytes:
+#endif
+  /* Handle tail.  */
+  for (; len; len--)
+    *dst++ = *src++;
+#endif /*__GNUC__ >= 4 && (__x86_64__ || __i386__)*/
+}
+
+
+/* Optimized function for buffer xoring */
+static inline void
+buf_xor(void *_dst, const void *_src1, const void *_src2, size_t len)
+{
+  byte *dst = _dst;
+  const byte *src1 = _src1;
+  const byte *src2 = _src2;
+  bufhelp_int_t *ldst;
+  const bufhelp_int_t *lsrc1, *lsrc2;
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+  const unsigned int longmask = sizeof(bufhelp_int_t) - 1;
+
+  /* Skip fast processing if buffers are unaligned.  */
+  if (((uintptr_t)dst | (uintptr_t)src1 | (uintptr_t)src2) & longmask)
+    goto do_bytes;
+#endif
+
+  ldst = (bufhelp_int_t *)(void *)dst;
+  lsrc1 = (const bufhelp_int_t *)(const void *)src1;
+  lsrc2 = (const bufhelp_int_t *)(const void *)src2;
+
+  for (; len >= sizeof(bufhelp_int_t); len -= sizeof(bufhelp_int_t))
+    (ldst++)->a = (lsrc1++)->a ^ (lsrc2++)->a;
+
+  dst = (byte *)ldst;
+  src1 = (const byte *)lsrc1;
+  src2 = (const byte *)lsrc2;
+
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+do_bytes:
+#endif
+  /* Handle tail.  */
+  for (; len; len--)
+    *dst++ = *src1++ ^ *src2++;
+}
+
+
+/* Optimized function for in-place buffer xoring. */
+static inline void
+buf_xor_1(void *_dst, const void *_src, size_t len)
+{
+  byte *dst = _dst;
+  const byte *src = _src;
+  bufhelp_int_t *ldst;
+  const bufhelp_int_t *lsrc;
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+  const unsigned int longmask = sizeof(bufhelp_int_t) - 1;
+
+  /* Skip fast processing if buffers are unaligned.  */
+  if (((uintptr_t)dst | (uintptr_t)src) & longmask)
+    goto do_bytes;
+#endif
+
+  ldst = (bufhelp_int_t *)(void *)dst;
+  lsrc = (const bufhelp_int_t *)(const void *)src;
+
+  for (; len >= sizeof(bufhelp_int_t); len -= sizeof(bufhelp_int_t))
+    (ldst++)->a ^= (lsrc++)->a;
+
+  dst = (byte *)ldst;
+  src = (const byte *)lsrc;
+
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+do_bytes:
+#endif
+  /* Handle tail.  */
+  for (; len; len--)
+    *dst++ ^= *src++;
+}
+
+
+/* Optimized function for buffer xoring with two destination buffers.  Used
+   mainly by CFB mode encryption.  */
+static inline void
+buf_xor_2dst(void *_dst1, void *_dst2, const void *_src, size_t len)
+{
+  byte *dst1 = _dst1;
+  byte *dst2 = _dst2;
+  const byte *src = _src;
+  bufhelp_int_t *ldst1, *ldst2;
+  const bufhelp_int_t *lsrc;
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+  const unsigned int longmask = sizeof(bufhelp_int_t) - 1;
+
+  /* Skip fast processing if buffers are unaligned.  */
+  if (((uintptr_t)src | (uintptr_t)dst1 | (uintptr_t)dst2) & longmask)
+    goto do_bytes;
+#endif
+
+  ldst1 = (bufhelp_int_t *)(void *)dst1;
+  ldst2 = (bufhelp_int_t *)(void *)dst2;
+  lsrc = (const bufhelp_int_t *)(const void *)src;
+
+  for (; len >= sizeof(bufhelp_int_t); len -= sizeof(bufhelp_int_t))
+    (ldst1++)->a = ((ldst2++)->a ^= (lsrc++)->a);
+
+  dst1 = (byte *)ldst1;
+  dst2 = (byte *)ldst2;
+  src = (const byte *)lsrc;
+
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+do_bytes:
+#endif
+  /* Handle tail.  */
+  for (; len; len--)
+    *dst1++ = (*dst2++ ^= *src++);
+}
+
+
+/* Optimized function for combined buffer xoring and copying.  Used by mainly
+   CBC mode decryption.  */
+static inline void
+buf_xor_n_copy_2(void *_dst_xor, const void *_src_xor, void *_srcdst_cpy,
+		 const void *_src_cpy, size_t len)
+{
+  byte *dst_xor = _dst_xor;
+  byte *srcdst_cpy = _srcdst_cpy;
+  const byte *src_xor = _src_xor;
+  const byte *src_cpy = _src_cpy;
+  byte temp;
+  bufhelp_int_t *ldst_xor, *lsrcdst_cpy;
+  const bufhelp_int_t *lsrc_cpy, *lsrc_xor;
+  uintptr_t ltemp;
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+  const unsigned int longmask = sizeof(bufhelp_int_t) - 1;
+
+  /* Skip fast processing if buffers are unaligned.  */
+  if (((uintptr_t)src_cpy | (uintptr_t)src_xor | (uintptr_t)dst_xor |
+       (uintptr_t)srcdst_cpy) & longmask)
+    goto do_bytes;
+#endif
+
+  ldst_xor = (bufhelp_int_t *)(void *)dst_xor;
+  lsrc_xor = (const bufhelp_int_t *)(void *)src_xor;
+  lsrcdst_cpy = (bufhelp_int_t *)(void *)srcdst_cpy;
+  lsrc_cpy = (const bufhelp_int_t *)(const void *)src_cpy;
+
+  for (; len >= sizeof(bufhelp_int_t); len -= sizeof(bufhelp_int_t))
+    {
+      ltemp = (lsrc_cpy++)->a;
+      (ldst_xor++)->a = (lsrcdst_cpy)->a ^ (lsrc_xor++)->a;
+      (lsrcdst_cpy++)->a = ltemp;
+    }
+
+  dst_xor = (byte *)ldst_xor;
+  src_xor = (const byte *)lsrc_xor;
+  srcdst_cpy = (byte *)lsrcdst_cpy;
+  src_cpy = (const byte *)lsrc_cpy;
+
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+do_bytes:
+#endif
+  /* Handle tail.  */
+  for (; len; len--)
+    {
+      temp = *src_cpy++;
+      *dst_xor++ = *srcdst_cpy ^ *src_xor++;
+      *srcdst_cpy++ = temp;
+    }
+}
+
+
+/* Optimized function for combined buffer xoring and copying.  Used by mainly
+   CFB mode decryption.  */
+static inline void
+buf_xor_n_copy(void *_dst_xor, void *_srcdst_cpy, const void *_src, size_t len)
+{
+  buf_xor_n_copy_2(_dst_xor, _src, _srcdst_cpy, _src, len);
+}
+
+
+/* Constant-time compare of two buffers.  Returns 1 if buffers are equal,
+   and 0 if buffers differ.  */
+static inline int
+buf_eq_const(const void *_a, const void *_b, size_t len)
+{
+  const byte *a = _a;
+  const byte *b = _b;
+  size_t diff, i;
+
+  /* Constant-time compare. */
+  for (i = 0, diff = 0; i < len; i++)
+    diff -= !!(a[i] - b[i]);
+
+  return !diff;
+}
+
+
+#ifndef BUFHELP_FAST_UNALIGNED_ACCESS
+
+/* Functions for loading and storing unaligned u32 values of different
+   endianness.  */
+static inline u32 buf_get_be32(const void *_buf)
+{
+  const byte *in = _buf;
+  return ((u32)in[0] << 24) | ((u32)in[1] << 16) | \
+         ((u32)in[2] << 8) | (u32)in[3];
+}
+
+static inline u32 buf_get_le32(const void *_buf)
+{
+  const byte *in = _buf;
+  return ((u32)in[3] << 24) | ((u32)in[2] << 16) | \
+         ((u32)in[1] << 8) | (u32)in[0];
+}
+
+static inline void buf_put_be32(void *_buf, u32 val)
+{
+  byte *out = _buf;
+  out[0] = val >> 24;
+  out[1] = val >> 16;
+  out[2] = val >> 8;
+  out[3] = val;
+}
+
+static inline void buf_put_le32(void *_buf, u32 val)
+{
+  byte *out = _buf;
+  out[3] = val >> 24;
+  out[2] = val >> 16;
+  out[1] = val >> 8;
+  out[0] = val;
+}
+
+
+/* Functions for loading and storing unaligned u64 values of different
+   endianness.  */
+static inline u64 buf_get_be64(const void *_buf)
+{
+  const byte *in = _buf;
+  return ((u64)in[0] << 56) | ((u64)in[1] << 48) | \
+         ((u64)in[2] << 40) | ((u64)in[3] << 32) | \
+         ((u64)in[4] << 24) | ((u64)in[5] << 16) | \
+         ((u64)in[6] << 8) | (u64)in[7];
+}
+
+static inline u64 buf_get_le64(const void *_buf)
+{
+  const byte *in = _buf;
+  return ((u64)in[7] << 56) | ((u64)in[6] << 48) | \
+         ((u64)in[5] << 40) | ((u64)in[4] << 32) | \
+         ((u64)in[3] << 24) | ((u64)in[2] << 16) | \
+         ((u64)in[1] << 8) | (u64)in[0];
+}
+
+static inline void buf_put_be64(void *_buf, u64 val)
+{
+  byte *out = _buf;
+  out[0] = val >> 56;
+  out[1] = val >> 48;
+  out[2] = val >> 40;
+  out[3] = val >> 32;
+  out[4] = val >> 24;
+  out[5] = val >> 16;
+  out[6] = val >> 8;
+  out[7] = val;
+}
+
+static inline void buf_put_le64(void *_buf, u64 val)
+{
+  byte *out = _buf;
+  out[7] = val >> 56;
+  out[6] = val >> 48;
+  out[5] = val >> 40;
+  out[4] = val >> 32;
+  out[3] = val >> 24;
+  out[2] = val >> 16;
+  out[1] = val >> 8;
+  out[0] = val;
+}
+
+#else /*BUFHELP_FAST_UNALIGNED_ACCESS*/
+
+typedef struct bufhelp_u32_s
+{
+  u32 a;
+} __attribute__((packed, aligned(1))) bufhelp_u32_t;
+
+/* Functions for loading and storing unaligned u32 values of different
+   endianness.  */
+static inline u32 buf_get_be32(const void *_buf)
+{
+  return be_bswap32(((const bufhelp_u32_t *)_buf)->a);
+}
+
+static inline u32 buf_get_le32(const void *_buf)
+{
+  return le_bswap32(((const bufhelp_u32_t *)_buf)->a);
+}
+
+static inline void buf_put_be32(void *_buf, u32 val)
+{
+  bufhelp_u32_t *out = _buf;
+  out->a = be_bswap32(val);
+}
+
+static inline void buf_put_le32(void *_buf, u32 val)
+{
+  bufhelp_u32_t *out = _buf;
+  out->a = le_bswap32(val);
+}
+
+
+typedef struct bufhelp_u64_s
+{
+  u64 a;
+} __attribute__((packed, aligned(1))) bufhelp_u64_t;
+
+/* Functions for loading and storing unaligned u64 values of different
+   endianness.  */
+static inline u64 buf_get_be64(const void *_buf)
+{
+  return be_bswap64(((const bufhelp_u64_t *)_buf)->a);
+}
+
+static inline u64 buf_get_le64(const void *_buf)
+{
+  return le_bswap64(((const bufhelp_u64_t *)_buf)->a);
+}
+
+static inline void buf_put_be64(void *_buf, u64 val)
+{
+  bufhelp_u64_t *out = _buf;
+  out->a = be_bswap64(val);
+}
+
+static inline void buf_put_le64(void *_buf, u64 val)
+{
+  bufhelp_u64_t *out = _buf;
+  out->a = le_bswap64(val);
+}
+
+
+#endif /*BUFHELP_FAST_UNALIGNED_ACCESS*/
+
+#endif /*GCRYPT_BUFHELP_H*/