ntoskrnl/ex/i386/interlck.c

   1 /* $Id$
   2  *
   3  * reactos/ntoskrnl/ex/i386/interlck.c
   4  *
   5  */
   6 #include <ddk/ntddk.h>
   7
   8
   9 INTERLOCKED_RESULT FASTCALL
  10 Exfi386InterlockedIncrementLong(IN PLONG Addend);
  11
  12 __asm__("\n\t.global @Exfi386InterlockedIncrementLong@4\n\t"
  13         "@Exfi386InterlockedIncrementLong@4:\n\t"
  14         "addl $1,(%ecx)\n\t"
  15         "lahf\n\t"
  16         "andl $0xC000, %eax\n\t"
  17         "ret\n\t");
  18
  19
  20 INTERLOCKED_RESULT FASTCALL
  21 Exfi386InterlockedDecrementLong(IN PLONG Addend);
  22
  23 __asm__("\n\t.global @Exfi386InterlockedDecrementLong@4\n\t"
  24         "@Exfi386InterlockedDecrementLong@4:\n\t"
  25         "subl $1,(%ecx)\n\t"
  26         "lahf\n\t"
  27         "andl $0xC000, %eax\n\t"
  28         "ret\n\t");
  29
  30
  31 ULONG FASTCALL
  32 Exfi386InterlockedExchangeUlong(IN PULONG Target,
  33                                 IN ULONG Value);
  34
  35 __asm__("\n\t.global @Exfi386InterlockedExchangeUlong@8\n\t"
  36         "@Exfi386InterlockedExchangeUlong@8:\n\t"
  37         "xchgl %edx,(%ecx)\n\t"
  38         "movl  %edx,%eax\n\t"
  39         "ret\n\t");
  40
  41
  42
  43 INTERLOCKED_RESULT STDCALL
  44 Exi386InterlockedIncrementLong(IN PLONG Addend);
  45
  46 __asm__("\n\t.global _Exi386InterlockedIncrementLong@4\n\t"
  47         "_Exi386InterlockedIncrementLong@4:\n\t"
  48         "movl 4(%esp),%eax\n\t"
  49         "addl $1,(%eax)\n\t"
  50         "lahf\n\t"
  51         "andl $0xC000, %eax\n\t"
  52         "ret $4\n\t");
  53
  54
  55 INTERLOCKED_RESULT STDCALL
  56 Exi386InterlockedDecrementLong(IN PLONG Addend);
  57
  58 __asm__("\n\t.global _Exi386InterlockedDecrementLong@4\n\t"
  59         "_Exi386InterlockedDecrementLong@4:\n\t"
  60         "movl 4(%esp),%eax\n\t"
  61         "subl $1,(%eax)\n\t"
  62         "lahf\n\t"
  63         "andl $0xC000, %eax\n\t"
  64         "ret $4\n\t");
  65
  66
  67 ULONG STDCALL
  68 Exi386InterlockedExchangeUlong(IN PULONG Target,
  69                                IN ULONG Value);
  70
  71 __asm__("\n\t.global _Exi386InterlockedExchangeUlong@8\n\t"
  72         "_Exi386InterlockedExchangeUlong@8:\n\t"
  73         "movl 4(%esp),%edx\n\t"
  74         "movl 8(%esp),%eax\n\t"
  75         "xchgl %eax,(%edx)\n\t"
  76         "ret $8\n\t");
  77
  78
  79 /**********************************************************************
  80  * FASTCALL: @InterlockedIncrement@4
  81  * STDCALL : _InterlockedIncrement@4
  82  */
  83 LONG FASTCALL
  84 InterlockedIncrement(PLONG Addend);
  85 /*
  86  * FUNCTION: Increments a caller supplied variable of type LONG as an
  87  * atomic operation
  88  * ARGUMENTS:
  89  *     Addend = Points to a variable whose value is to be increment
  90  * RETURNS: The incremented value
  91  */
  92
  93 __asm__("\n\t.global @InterlockedIncrement@4\n\t"
  94         "@InterlockedIncrement@4:\n\t"
  95         "movl $1,%eax\n\t"
  96         "xaddl %eax,(%ecx)\n\t"
  97         "incl %eax\n\t"
  98         "ret\n\t");
  99
 100
 101 /**********************************************************************
 102  * FASTCALL: @InterlockedDecrement@4
 103  * STDCALL : _InterlockedDecrement@4
 104  */
 105 LONG FASTCALL
 106 InterlockedDecrement(PLONG Addend);
 107
 108 __asm__("\n\t.global @InterlockedDecrement@4\n\t"
 109         "@InterlockedDecrement@4:\n\t"
 110         "movl $-1,%eax\n\t"
 111         "xaddl %eax,(%ecx)\n\t"
 112         "decl %eax\n\t"
 113         "ret\n\t");
 114
 115
 116 /**********************************************************************
 117  * FASTCALL: @InterlockedExchange@8
 118  * STDCALL : _InterlockedExchange@8
 119  */
 120
 121 LONG FASTCALL
 122 InterlockedExchange(PLONG Target,
 123                     LONG Value);
 124
 125 __asm__("\n\t.global @InterlockedExchange@8\n\t"
 126         "@InterlockedExchange@8:\n\t"
 127         "xchgl %edx,(%ecx)\n\t"
 128         "movl  %edx,%eax\n\t"
 129         "ret\n\t");
 130
 131
 132 /**********************************************************************
 133  * FASTCALL: @InterlockedExchangeAdd@8
 134  * STDCALL: _InterlockedExchangeAdd@8
 135  */
 136 LONG FASTCALL
 137 InterlockedExchangeAdd(PLONG Addend,
 138                        LONG Value);
 139
 140 __asm__("\n\t.global @InterlockedExchangeAdd@8\n\t"
 141         "@InterlockedExchangeAdd@8:\n\t"
 142         "xaddl %edx,(%ecx)\n\t"
 143         "movl %edx,%eax\n\t"
 144         "ret\n\t");
 145
 146
 147 /**********************************************************************
 148  * FASTCALL: @InterlockedCompareExchange@12
 149  * STDCALL: _InterlockedCompareExchange@12
 150  */
 151 LONG FASTCALL
 152 InterlockedCompareExchange(PLONG Destination,
 153                            LONG Exchange,
 154                            LONG Comperand);
 155
 156 __asm__("\n\t.global @InterlockedCompareExchange@12\n\t"
 157         "@InterlockedCompareExchange@12:\n\t"
 158         "movl 4(%esp),%eax\n\t"
 159         "cmpxchg %edx,(%ecx)\n\t"
 160         "ret $4\n\t");
 161
 162 /* EOF */