Initial revision

lib/bytesex_asm.h

@@ -0,0 +1,123 @@
+/*
+    $Id: bytesex_asm.h,v 1.1 2003/03/24 19:01:09 rocky Exp $
+
+    Copyright (C) 2001 Sven Ottemann <ac-logic@freenet.de>
+                  2001 Herbert Valerio Riedel <hvr@gnu.org>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU 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
+*/
+
+#ifndef __CDIO_BYTESEX_ASM_H__
+#define __CDIO_BYTESEX_ASM_H__
+#if !defined(DISABLE_ASM_OPTIMIZE)
+
+#include "cdio_types.h"
+
+#if defined(__powerpc__) && defined(__GNUC__)
+
+inline static
+uint32_t uint32_swap_le_be_asm(const uint32_t a)
+{
+  uint32_t b;
+
+  __asm__ ("lwbrx %0,0,%1"
+           :"=r"(b)
+           :"r"(&a), "m"(a));
+
+  return b;
+}
+
+inline static
+uint16_t uint16_swap_le_be_asm(const uint16_t a)
+{
+  uint32_t b;
+
+  __asm__ ("lhbrx %0,0,%1"
+           :"=r"(b)
+           :"r"(&a), "m"(a));
+
+  return b;
+}
+
+#define UINT16_SWAP_LE_BE uint16_swap_le_be_asm
+#define UINT32_SWAP_LE_BE uint32_swap_le_be_asm
+
+#elif defined(__mc68000__) &&  defined(__STORMGCC__)
+
+inline static 
+uint32_t uint32_swap_le_be_asm(uint32_t a __asm__("d0"))
+{
+  /* __asm__("rolw #8,%0; swap %0; rolw #8,%0" : "=d" (val) : "0" (val)); */
+
+  __asm__("move.l %1,d0;rol.w #8,d0;swap d0;rol.w #8,d0;move.l d0,%0"
+          :"=r"(a)
+          :"r"(a));
+
+  return(a);
+}
+
+inline static
+uint16_t uint16_swap_le_be_asm(uint16_t a __asm__("d0"))
+{
+  __asm__("move.l %1,d0;rol.w #8,d0;move.l d0,%0"
+          :"=r"(a)
+          :"r"(a));
+  
+  return(a);
+}
+
+#define UINT16_SWAP_LE_BE uint16_swap_le_be_asm
+#define UINT32_SWAP_LE_BE uint32_swap_le_be_asm
+
+#elif 0 && defined(__i386__) && defined(__GNUC__)
+
+inline static 
+uint32_t uint32_swap_le_be_asm(uint32_t a)
+{
+  __asm__("xchgb %b0,%h0\n\t"     /* swap lower bytes     */
+	  "rorl $16,%0\n\t"       /* swap words           */
+	  "xchgb %b0,%h0"         /* swap higher bytes    */
+	  :"=q" (a)
+	  : "0" (a));
+
+  return(a);
+}
+
+inline static
+uint16_t uint16_swap_le_be_asm(uint16_t a)
+{
+  __asm__("xchgb %b0,%h0"         /* swap bytes           */ 
+	  : "=q" (a) 
+	  :  "0" (a));
+  
+  return(a);
+}
+
+#define UINT16_SWAP_LE_BE uint16_swap_le_be_asm
+#define UINT32_SWAP_LE_BE uint32_swap_le_be_asm
+
+#endif
+
+#endif /* !defined(DISABLE_ASM_OPTIMIZE) */
+#endif /* __CDIO_BYTESEX_ASM_H__ */
+
+
+/* 
+ * Local variables:
+ *  c-file-style: "gnu"
+ *  tab-width: 8
+ *  indent-tabs-mode: nil
+ * End:
+ */