jdk8-mips64-public/hotspot: src/share/vm/libadt/port.cpp@c760f78e0a53

7003125: precompiled.hpp is included when precompiled headers are not used
Summary: Added an ifndef DONT_USE_PRECOMPILED_HEADER to precompiled.hpp. Set up DONT_USE_PRECOMPILED_HEADER when compiling with Sun Studio or when the user specifies USE_PRECOMPILED_HEADER=0. Fixed broken include dependencies.
Reviewed-by: coleenp, kvn

     1 /*

     2  * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.

     8  *

     9  * This code is distributed in the hope that it will be useful, but WITHOUT

    10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    12  * version 2 for more details (a copy is included in the LICENSE file that

    13  * accompanied this code).

    14  *

    15  * You should have received a copy of the GNU General Public License version

    16  * 2 along with this work; if not, write to the Free Software Foundation,

    17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    18  *

    19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    20  * or visit www.oracle.com if you need additional information or have any

    21  * questions.

    22  *

    23  */

    25 #include "precompiled.hpp"

    26 #include "libadt/port.hpp"

    28 // Code for portable compiling

    30 #ifdef __GNUC__

    31 #pragma implementation

    32 #endif

    34 // %%%%% includes not needed with AVM framework - Ungar

    35 // #include "port.hpp"

    37 // This is only used if turboc is used and it causes problems with

    38 // gcc.

    39 #ifdef __TURBOC__

    40 #include <iostream.h>

    41 #endif

    43 #include <stdio.h>

    45 //------------------------------gcd--------------------------------------------

    46 // Greatest common divisor

    47 uint32 gcd( register uint32 x, register uint32 y )

    48 {

    49   register uint32 tmp;

    50   while( x ) {                  // While not zero

    51     tmp = x;                    // Hold onto smaller x value

    52     x = y % x;                  // Compute modulus; since y>=x, 0 <= mod < x

    53     y = tmp;                    // y = old x

    54   }

    55   return y;

    56 }

    58 //-----------------------------------------------------------------------------

    59 // Find first 1, or return 32 if empty

    60 int ff1( uint32 mask )

    61 {

    62   unsigned i, n = 0;

    64   for( i=1, n=0; i; i<<=1, n++)

    65     if( mask&i ) return n;

    66   return 32;

    67 }

    69 //-----------------------------------------------------------------------------

    70 // Find highest 1, or return 32 if empty

    71 int fh1( uint32 mask )

    72 {

    73   unsigned i, n = 0;

    75   for( i=((uint32)1<<31), n=31; i; i>>=1, n--)

    76     if( mask&i ) return n;

    77   return 32;

    78 }

    80 //------------------------------rotate32---------------------------------------

    81 // Rotate 32bits.  Postive rotates left (bits move toward high-order bit),

    82 // negative rotates right.

    83 uint32 rotate32( register uint32 x, register int32 cnt )

    84 {

    85   if( cnt >= 0 ) {              // Positive rotates left

    86     cnt &= 31;                  // Mask off extra shift bits

    87   } else {                      // Negative rotates right

    88     cnt = (-cnt)&31;            // Flip sign; mask extra shift bits

    89     cnt = 32-cnt;               // Rotate right by big left rotation

    90   }

    91   return (x << cnt) | (x >> (32-cnt));

    92 }

    94 /* Disabled - we have another log2 in the system.

    95    This function doesn't work if used as substitute

    96    for the existing log2. Keep around until we have

    97    verified all uses of log2 do the correct thing!

    98 //------------------------------log2-------------------------------------------

    99 // Log base 2.  Might also be called 'count leading zeros'.  Log2(x) returns

   100 // an l such that (1L<<l) <= x < (2L<<l).  log2(x) returns 32.

   101 uint log2( uint32 x )

   102 {

   103   register uint l = 32;         // Log bits

   104   register int32 sx = x;        // Treat as signed number

   105   while( sx >= 0 )              // While high bit is clear

   106     sx <<= 1, l--;              // Shift bits left, count down log2

   107   return l;

   108 }

   109 */

   111 //------------------------------print------------------------------------------

   112 // Print a pointer without modifying the contents

   113 #ifdef __TURBOC__

   114 ostream &ostream::operator << (const void *ptr)

   115 {

   116   return (*this) << "0x" << hex << (uint)ptr << dec;

   117 }

   118 #else

   119 /*ostream &operator << (ostream &os, const void *ptr)

   120 {

   121   return os << "0x" << hex << (uint)ptr << dec;

   122 }*/

   123 #endif

Mercurial > jdk8-mips64-public > hotspot / file revision

src/share/vm/libadt/port.cpp@c760f78e0a53

src/share/vm/libadt/port.cpp