summaryrefslogtreecommitdiff
path: root/plugins/mms/libmms/bswap.h
diff options
context:
space:
mode:
Diffstat (limited to 'plugins/mms/libmms/bswap.h')
-rw-r--r--plugins/mms/libmms/bswap.h280
1 files changed, 280 insertions, 0 deletions
diff --git a/plugins/mms/libmms/bswap.h b/plugins/mms/libmms/bswap.h
new file mode 100644
index 00000000..a24460ab
--- /dev/null
+++ b/plugins/mms/libmms/bswap.h
@@ -0,0 +1,280 @@
+#ifndef BSWAP_H_INCLUDED
+#define BSWAP_H_INCLUDED
+
+/*
+ * Copyright (C) 2004 Maciej Katafiasz <mathrick@users.sourceforge.net>
+ *
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU Library General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program 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 General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+ */
+
+
+/* NOTE:
+ * Now, to clear up confusion: LE_XX means "from LE to native, XX bits wide"
+ * I know it's not very clear naming (tell me about it, I
+ * misinterpreted in first version and caused bad nasty bug, *sigh*),
+ * but that's inherited code, will clean up as things go
+ * Oh, and one more thing -- they take *pointers*, not actual ints
+ */
+
+/* Basic bit swapping functions
+ */
+#define GUINT16_SWAP_LE_BE_CONSTANT(val) ((guint16) ( \
+ (guint16) ((guint16) (val) >> 8) | \
+ (guint16) ((guint16) (val) << 8)))
+
+#define GUINT32_SWAP_LE_BE_CONSTANT(val) ((guint32) ( \
+ (((guint32) (val) & (guint32) 0x000000ffU) << 24) | \
+ (((guint32) (val) & (guint32) 0x0000ff00U) << 8) | \
+ (((guint32) (val) & (guint32) 0x00ff0000U) >> 8) | \
+ (((guint32) (val) & (guint32) 0xff000000U) >> 24)))
+
+#define GUINT64_SWAP_LE_BE_CONSTANT(val) ((guint64) ( \
+ (((guint64) (val) & \
+ (guint64) G_GINT64_CONSTANT (0x00000000000000ffU)) << 56) | \
+ (((guint64) (val) & \
+ (guint64) G_GINT64_CONSTANT (0x000000000000ff00U)) << 40) | \
+ (((guint64) (val) & \
+ (guint64) G_GINT64_CONSTANT (0x0000000000ff0000U)) << 24) | \
+ (((guint64) (val) & \
+ (guint64) G_GINT64_CONSTANT (0x00000000ff000000U)) << 8) | \
+ (((guint64) (val) & \
+ (guint64) G_GINT64_CONSTANT (0x000000ff00000000U)) >> 8) | \
+ (((guint64) (val) & \
+ (guint64) G_GINT64_CONSTANT (0x0000ff0000000000U)) >> 24) | \
+ (((guint64) (val) & \
+ (guint64) G_GINT64_CONSTANT (0x00ff000000000000U)) >> 40) | \
+ (((guint64) (val) & \
+ (guint64) G_GINT64_CONSTANT (0xff00000000000000U)) >> 56)))
+
+/* Arch specific stuff for speed
+ */
+#if defined (__GNUC__) && (__GNUC__ >= 2) && defined (__OPTIMIZE__)
+# if defined (__i386__)
+# define GUINT16_SWAP_LE_BE_IA32(val) \
+ (__extension__ \
+ ({ register guint16 __v, __x = ((guint16) (val)); \
+ if (__builtin_constant_p (__x)) \
+ __v = GUINT16_SWAP_LE_BE_CONSTANT (__x); \
+ else \
+ __asm__ ("rorw $8, %w0" \
+ : "=r" (__v) \
+ : "0" (__x) \
+ : "cc"); \
+ __v; }))
+# if !defined (__i486__) && !defined (__i586__) \
+ && !defined (__pentium__) && !defined (__i686__) \
+ && !defined (__pentiumpro__) && !defined (__pentium4__)
+# define GUINT32_SWAP_LE_BE_IA32(val) \
+ (__extension__ \
+ ({ register guint32 __v, __x = ((guint32) (val)); \
+ if (__builtin_constant_p (__x)) \
+ __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \
+ else \
+ __asm__ ("rorw $8, %w0\n\t" \
+ "rorl $16, %0\n\t" \
+ "rorw $8, %w0" \
+ : "=r" (__v) \
+ : "0" (__x) \
+ : "cc"); \
+ __v; }))
+# else /* 486 and higher has bswap */
+# define GUINT32_SWAP_LE_BE_IA32(val) \
+ (__extension__ \
+ ({ register guint32 __v, __x = ((guint32) (val)); \
+ if (__builtin_constant_p (__x)) \
+ __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \
+ else \
+ __asm__ ("bswap %0" \
+ : "=r" (__v) \
+ : "0" (__x)); \
+ __v; }))
+# endif /* processor specific 32-bit stuff */
+# define GUINT64_SWAP_LE_BE_IA32(val) \
+ (__extension__ \
+ ({ union { guint64 __ll; \
+ guint32 __l[2]; } __w, __r; \
+ __w.__ll = ((guint64) (val)); \
+ if (__builtin_constant_p (__w.__ll)) \
+ __r.__ll = GUINT64_SWAP_LE_BE_CONSTANT (__w.__ll); \
+ else \
+ { \
+ __r.__l[0] = GUINT32_SWAP_LE_BE (__w.__l[1]); \
+ __r.__l[1] = GUINT32_SWAP_LE_BE (__w.__l[0]); \
+ } \
+ __r.__ll; }))
+ /* Possibly just use the constant version and let gcc figure it out? */
+# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_IA32 (val))
+# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_IA32 (val))
+# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_IA32 (val))
+# elif defined (__ia64__)
+# define GUINT16_SWAP_LE_BE_IA64(val) \
+ (__extension__ \
+ ({ register guint16 __v, __x = ((guint16) (val)); \
+ if (__builtin_constant_p (__x)) \
+ __v = GUINT16_SWAP_LE_BE_CONSTANT (__x); \
+ else \
+ __asm__ __volatile__ ("shl %0 = %1, 48 ;;" \
+ "mux1 %0 = %0, @rev ;;" \
+ : "=r" (__v) \
+ : "r" (__x)); \
+ __v; }))
+# define GUINT32_SWAP_LE_BE_IA64(val) \
+ (__extension__ \
+ ({ register guint32 __v, __x = ((guint32) (val)); \
+ if (__builtin_constant_p (__x)) \
+ __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \
+ else \
+ __asm__ __volatile__ ("shl %0 = %1, 32 ;;" \
+ "mux1 %0 = %0, @rev ;;" \
+ : "=r" (__v) \
+ : "r" (__x)); \
+ __v; }))
+# define GUINT64_SWAP_LE_BE_IA64(val) \
+ (__extension__ \
+ ({ register guint64 __v, __x = ((guint64) (val)); \
+ if (__builtin_constant_p (__x)) \
+ __v = GUINT64_SWAP_LE_BE_CONSTANT (__x); \
+ else \
+ __asm__ __volatile__ ("mux1 %0 = %1, @rev ;;" \
+ : "=r" (__v) \
+ : "r" (__x)); \
+ __v; }))
+# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_IA64 (val))
+# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_IA64 (val))
+# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_IA64 (val))
+# elif defined (__x86_64__)
+# define GUINT32_SWAP_LE_BE_X86_64(val) \
+ (__extension__ \
+ ({ register guint32 __v, __x = ((guint32) (val)); \
+ if (__builtin_constant_p (__x)) \
+ __v = GUINT32_SWAP_LE_BE_CONSTANT (__x); \
+ else \
+ __asm__ ("bswapl %0" \
+ : "=r" (__v) \
+ : "0" (__x)); \
+ __v; }))
+# define GUINT64_SWAP_LE_BE_X86_64(val) \
+ (__extension__ \
+ ({ register guint64 __v, __x = ((guint64) (val)); \
+ if (__builtin_constant_p (__x)) \
+ __v = GUINT64_SWAP_LE_BE_CONSTANT (__x); \
+ else \
+ __asm__ ("bswapq %0" \
+ : "=r" (__v) \
+ : "0" (__x)); \
+ __v; }))
+ /* gcc seems to figure out optimal code for this on its own */
+# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val))
+# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_X86_64 (val))
+# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_X86_64 (val))
+# else /* generic gcc */
+# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val))
+# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val))
+# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT (val))
+# endif
+#else /* generic */
+# define GUINT16_SWAP_LE_BE(val) (GUINT16_SWAP_LE_BE_CONSTANT (val))
+# define GUINT32_SWAP_LE_BE(val) (GUINT32_SWAP_LE_BE_CONSTANT (val))
+# define GUINT64_SWAP_LE_BE(val) (GUINT64_SWAP_LE_BE_CONSTANT (val))
+#endif /* generic */
+
+#define GUINT16_SWAP_LE_PDP(val) ((guint16) (val))
+#define GUINT16_SWAP_BE_PDP(val) (GUINT16_SWAP_LE_BE (val))
+#define GUINT32_SWAP_LE_PDP(val) ((guint32) ( \
+ (((guint32) (val) & (guint32) 0x0000ffffU) << 16) | \
+ (((guint32) (val) & (guint32) 0xffff0000U) >> 16)))
+#define GUINT32_SWAP_BE_PDP(val) ((guint32) ( \
+ (((guint32) (val) & (guint32) 0x00ff00ffU) << 8) | \
+ (((guint32) (val) & (guint32) 0xff00ff00U) >> 8)))
+
+
+/* The G*_TO_?E() macros are defined in glibconfig.h.
+ * The transformation is symmetric, so the FROM just maps to the TO.
+ */
+#define GINT16_FROM_LE(val) (GINT16_TO_LE (val))
+#define GUINT16_FROM_LE(val) (GUINT16_TO_LE (val))
+#define GINT16_FROM_BE(val) (GINT16_TO_BE (val))
+#define GUINT16_FROM_BE(val) (GUINT16_TO_BE (val))
+#define GINT32_FROM_LE(val) (GINT32_TO_LE (val))
+#define GUINT32_FROM_LE(val) (GUINT32_TO_LE (val))
+#define GINT32_FROM_BE(val) (GINT32_TO_BE (val))
+#define GUINT32_FROM_BE(val) (GUINT32_TO_BE (val))
+
+#define GINT64_FROM_LE(val) (GINT64_TO_LE (val))
+#define GUINT64_FROM_LE(val) (GUINT64_TO_LE (val))
+#define GINT64_FROM_BE(val) (GINT64_TO_BE (val))
+#define GUINT64_FROM_BE(val) (GUINT64_TO_BE (val))
+
+#define GLONG_FROM_LE(val) (GLONG_TO_LE (val))
+#define GULONG_FROM_LE(val) (GULONG_TO_LE (val))
+#define GLONG_FROM_BE(val) (GLONG_TO_BE (val))
+#define GULONG_FROM_BE(val) (GULONG_TO_BE (val))
+
+#define GINT_FROM_LE(val) (GINT_TO_LE (val))
+#define GUINT_FROM_LE(val) (GUINT_TO_LE (val))
+#define GINT_FROM_BE(val) (GINT_TO_BE (val))
+#define GUINT_FROM_BE(val) (GUINT_TO_BE (val))
+
+#define GSIZE_FROM_LE(val) (GSIZE_TO_LE (val))
+#define GSSIZE_FROM_LE(val) (GSSIZE_TO_LE (val))
+#define GSIZE_FROM_BE(val) (GSIZE_TO_BE (val))
+#define GSSIZE_FROM_BE(val) (GSSIZE_TO_BE (val))
+
+
+/* Portable versions of host-network order stuff
+ */
+#define g_ntohl(val) (GUINT32_FROM_BE (val))
+#define g_ntohs(val) (GUINT16_FROM_BE (val))
+#define g_htonl(val) (GUINT32_TO_BE (val))
+#define g_htons(val) (GUINT16_TO_BE (val))
+
+#if WORDS_BIGENDIAN
+#define GUINT64_TO_BE(val) (val)
+#define GUINT32_TO_BE(val) (val)
+#define GUINT16_TO_BE(val) (val)
+#define GUINT64_TO_LE(val) GUINT64_SWAP_LE_BE(val)
+#define GUINT32_TO_LE(val) GUINT32_SWAP_LE_BE(val)
+#define GUINT16_TO_LE(val) GUINT16_SWAP_LE_BE(val)
+#define GINT64_TO_BE(val) (val)
+#define GINT32_TO_BE(val) (val)
+#define GINT16_TO_BE(val) (val)
+#define GINT64_TO_LE(val) GUINT64_SWAP_LE_BE(val)
+#define GINT32_TO_LE(val) GUINT32_SWAP_LE_BE(val)
+#define GINT16_TO_LE(val) GUINT16_SWAP_LE_BE(val)
+#else
+#define GUINT64_TO_BE(val) GUINT64_SWAP_LE_BE(val)
+#define GUINT32_TO_BE(val) GUINT32_SWAP_LE_BE(val)
+#define GUINT16_TO_BE(val) GUINT16_SWAP_LE_BE(val)
+#define GUINT64_TO_LE(val) (val)
+#define GUINT32_TO_LE(val) (val)
+#define GUINT16_TO_LE(val) (val)
+#define GINT64_TO_BE(val) GUINT64_SWAP_LE_BE(val)
+#define GINT32_TO_BE(val) GUINT32_SWAP_LE_BE(val)
+#define GINT16_TO_BE(val) GUINT16_SWAP_LE_BE(val)
+#define GINT64_TO_LE(val) (val)
+#define GINT32_TO_LE(val) (val)
+#define GINT16_TO_LE(val) (val)
+#endif
+
+#define LE_16(val) (GINT16_FROM_LE (*((u_int16_t*)(val))))
+#define BE_16(val) (GINT16_FROM_BE (*((u_int16_t*)(val))))
+#define LE_32(val) (GINT32_FROM_LE (*((u_int32_t*)(val))))
+#define BE_32(val) (GINT32_FROM_BE (*((u_int32_t*)(val))))
+
+#define LE_64(val) (GINT64_FROM_LE (*((u_int64_t*)(val))))
+#define BE_64(val) (GINT64_FROM_BE (*((u_int64_t*)(val))))
+
+#endif /* BSWAP_H_INCLUDED */
generated by cgit v1.2.3 (git 2.39.1) at 2024-06-27 04:00:34 +0000