Import perl-5.28.1

looking good sthen@, Great! bluhm@

1 files changed, 52 insertions, 0 deletions

diff --git a/gnu/usr.bin/perl/stadtx_hash.h b/gnu/usr.bin/perl/stadtx_hash.h
index 5ee879485df..bd09c2f9389 100644
--- a/gnu/usr.bin/perl/stadtx_hash.h
+++ b/gnu/usr.bin/perl/stadtx_hash.h
@@ -43,6 +43,58 @@
 #define STMT_END while(0)
 #endif
 
+#ifndef STADTX_ALLOW_UNALIGNED_AND_LITTLE_ENDIAN
+/* STADTX_ALLOW_UNALIGNED_AND_LITTLE_ENDIAN only matters if nothing has defined U8TO64_LE etc,
+ * and when built with Perl these should be defined before this file is loaded.
+ */
+#ifdef U32_ALIGNMENT_REQUIRED
+#define STADTX_ALLOW_UNALIGNED_AND_LITTLE_ENDIAN 0
+#else
+#define STADTX_ALLOW_UNALIGNED_AND_LITTLE_ENDIAN 1
+#endif
+#endif
+
+#ifndef U8TO64_LE
+#if STADTX_ALLOW_UNALIGNED_AND_LITTLE_ENDIAN
+#define U8TO64_LE(ptr)  (*((const U64 *)(ptr)))
+#else
+#define U8TO64_LE(ptr)  (\
+    (U64)(ptr)[7] << 56 | \
+    (U64)(ptr)[6] << 48 | \
+    (U64)(ptr)[5] << 40 | \
+    (U64)(ptr)[4] << 32 | \
+    (U64)(ptr)[3] << 24 | \
+    (U64)(ptr)[2] << 16 | \
+    (U64)(ptr)[1] << 8  | \
+    (U64)(ptr)[0]         \
+)
+#endif
+#endif
+
+#ifndef U8TO32_LE
+#if STADTX_ALLOW_UNALIGNED_AND_LITTLE_ENDIAN
+#define U8TO32_LE(ptr)  (*((const U32 *)(ptr)))
+#else
+#define U8TO32_LE(ptr)  (\
+    (U32)(ptr)[3] << 24 | \
+    (U32)(ptr)[2] << 16 | \
+    (U32)(ptr)[1] << 8  | \
+    (U32)(ptr)[0]         \
+)
+#endif
+#endif
+
+#ifndef U8TO16_LE
+#if STADTX_ALLOW_UNALIGNED_AND_LITTLE_ENDIAN
+#define U8TO16_LE(ptr)  (*((const U16 *)(ptr)))
+#else
+#define U8TO16_LE(ptr)  (\
+    (U16)(ptr)[1] << 8  | \
+    (U16)(ptr)[0]         \
+)
+#endif
+#endif
+
 /* Find best way to ROTL32/ROTL64 */
 #if defined(_MSC_VER)
   #include <stdlib.h>  /* Microsoft put _rotl declaration in here */