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annotate include/SDL_atomic.h @ 3181:030899df1af5

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OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
author Bob Pendleton <bob@pendleton.com>
date Tue, 09 Jun 2009 19:39:23 +0000
parents 77d6336711fc
children 51750b7a966f
rev   line source
3180
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1 /*
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2 SDL - Simple DirectMedia Layer
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3 Copyright (C) 1997-2006 Sam Lantinga
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4
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5 This library is free software; you can redistribute it and/or
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6 modify it under the terms of the GNU Lesser General Public
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7 License as published by the Free Software Foundation; either
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8 version 2.1 of the License, or (at your option) any later version.
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9
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10 This library is distributed in the hope that it will be useful,
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11 but WITHOUT ANY WARRANTY; without even the implied warranty of
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12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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13 Lesser General Public License for more details.
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14
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15 You should have received a copy of the GNU Lesser General Public
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16 License along with this library; if not, write to the Free Software
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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18
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19 Sam Lantinga
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20 slouken@libsdl.org
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21 */
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22
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23 /**
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24 * \file SDL_atomic.h
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25 *
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26 * Atomic int and pointer magic
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27 */
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28
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29 #ifndef _SDL_atomic_h_
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30 #define _SDL_atomic_h_
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31
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32
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33 #include "SDL_stdinc.h"
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34 #include "SDL_platform.h"
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35
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36 #include "begin_code.h"
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37
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38 /* Set up for C function definitions, even when using C++ */
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39 #ifdef __cplusplus
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40 /* *INDENT-OFF* */
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41 extern "C" {
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42 /* *INDENT-ON* */
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43 #endif
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44
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45 #if defined(__GNUC__) && (defined(i386) || defined(__i386__) || defined(__x86_64__))
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46 static __inline__ void
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47 SDL_atomic_int_add(volatile int* atomic, int value)
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48 {
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49 __asm__ __volatile__("lock;"
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50 "addl %1, %0"
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51 : "=m" (*atomic)
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52 : "ir" (value),
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53 "m" (*atomic));
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54 }
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55
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56 static __inline__ int
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57 SDL_atomic_int_xchg_add(volatile int* atomic, int value)
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58 {
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59 int rv;
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60 __asm__ __volatile__("lock;"
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61 "xaddl %0, %1"
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62 : "=r" (rv),
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63 "=m" (*atomic)
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64 : "0" (value),
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65 "m" (*atomic));
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66 return rv;
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67 }
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68
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69 static __inline__ SDL_bool
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70 SDL_atomic_int_cmp_xchg(volatile int* atomic, int oldvalue, int newvalue)
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71 {
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72 int rv;
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73 __asm__ __volatile__("lock;"
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74 "cmpxchgl %2, %1"
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75 : "=a" (rv),
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76 "=m" (*atomic)
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77 : "r" (newvalue),
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78 "m" (*atomic),
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79 "0" (oldvalue));
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80 return (SDL_bool)(rv == oldvalue);
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81 }
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82
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83 static __inline__ SDL_bool
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84 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
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85 {
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86 void* rv;
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87 __asm__ __volatile__("lock;"
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88 # if defined(__x86_64__)
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89 "cmpxchgq %q2, %1"
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90 # else
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91 "cmpxchgl %2, %1"
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92 # endif
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93 : "=a" (rv),
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94 "=m" (*atomic)
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95 : "r" (newvalue),
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96 "m" (*atomic),
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97 "0" (oldvalue));
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98 return (SDL_bool)(rv == oldvalue);
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99 }
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100 #elif defined(__GNUC__) && defined(__alpha__)
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101 # define ATOMIC_MEMORY_BARRIER (__asm__ __volatile__ ("mb" : : : "memory"))
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102 # define ATOMIC_INT_CMP_XCHG(atomic,value) \
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103 ({ \
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104 int rv,prev; \
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105 __asm__ __volatile__(" mb\n" \
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106 "1: ldl_l %0,%2\n" \
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107 " cmpeq %0,%3,%1\n" \
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108 " beq %1,2f\n" \
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109 " mov %4,%1\n" \
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110 " stl_c %1,%2\n" \
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111 " beq %1,1b\n" \
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112 " mb\n" \
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113 "2:" \
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114 : "=&r" (prev), \
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115 "=&r" (rv) \
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116 : "m" (*(atomic)), \
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117 "Ir" (oldvalue), \
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118 "Ir" (newvalue) \
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119 : "memory"); \
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120 (rv != 0); \
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121 })
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122
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123 # if (SIZEOF_VOIDP == 4)
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124 static __inline__ SDL_bool
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125 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
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126 {
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127 int rv;
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128 void* prev;
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129 __asm__ __volatile__(" mb\n"
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130 "1: ldl_l %0,%2\n"
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131 " cmpeq %0,%3,%1\n"
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132 " beq $1,2f\n"
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133 " mov %4,%1\n"
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134 " stl_c %1,%2\n"
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135 " beq %1,1b\n"
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136 " mb\n"
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137 "2:"
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138 : "=&r" (prev),
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139 "=&r" (rv)
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140 : "m" (*atomic),
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141 "Ir" (oldvalue),
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142 "Ir" (newvalue)
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143 : "memory");
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144 return (SDL_bool)(rv != 0);
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145 }
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146 # elif (SIZEOF_VOIDP == 8)
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147 static __inline__ SDL_bool
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148 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
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149 {
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150 int rv;
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151 void* prev;
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152 __asm__ __volatile__(" mb\n"
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153 "1: ldq_l %0,%2\n"
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154 " cmpeq %0,%3,%1\n"
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155 " beq %1,2f\n"
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156 " mov %4,%1\n"
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157 " stq_c %1,%2\n"
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158 " beq %1,1b\n"
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159 " mb\n"
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160 "2:"
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161 : "=&r" (prev),
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162 "=&r" (rv)
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163 : "m" (*atomic),
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164 "Ir" (oldvalue),
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165 "Ir" (newvalue)
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166 : "memory");
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167 return (SDL_bool)(rv != 0);
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168 }
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169 # else
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170 # error "Your system has an unsupported pointer size"
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171 # endif /* SIZEOF_VOIDP */
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172 #elif defined(__GNUC__) && defined(__sparc__)
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173 # define ATOMIC_MEMORY_BARRIER \
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174 (__asm__ __volatile__("membar #LoadLoad | #LoadStore" \
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175 " | #StoreLoad | #StoreStore" : : : "memory"))
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176 # define ATOMIC_INT_CMP_XCHG(atomic,oldvalue,newvalue) \
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177 ({ \
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178 int rv; \
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179 __asm__ __volatile__("cas [%4], %2, %0" \
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180 : "=r" (rv), "=m" (*(atomic)) \
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181 : "r" (oldvalue), "m" (*(atomic)), \
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182 "r" (atomic), "0" (newvalue)); \
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183 rv == oldvalue; \
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184 })
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185
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186 # if (SIZEOF_VOIDP == 4)
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187 static __inline__ SDL_bool
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188 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
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189 {
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190 void* rv;
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191 __asm__ __volatile__("cas [%4], %2, %0"
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192 : "=r" (rv),
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193 "=m" (*atomic)
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194 : "r" (oldvalue),
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195 "m" (*atomic),
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196 "r" (atomic),
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197 "0" (newvalue));
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198 return (SDL_bool)(rv == oldvalue);
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199 }
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200 # elif (SIZEOF_VOIDP == 8)
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201 static __inline__ SDL_bool
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202 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
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203 {
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204 void* rv;
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205 void** a = atomic;
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206 __asm__ __volatile__("casx [%4], %2, %0"
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207 : "=r" (rv),
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208 "=m" (*a)
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209 : "r" (oldvalue),
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210 "m" (*a),
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211 "r" (a),
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212 "0" (newvalue));
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213 return (SDL_bool)(rv == oldvalue);
3180
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214 }
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215 # else
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216 # error "Your system has an unsupported pointer size"
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217 # endif /* SIZEOF_VOIDP */
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218 #elif defined(__GNUC__) && (defined(__POWERPC__) || defined(__powerpc__) || defined(__ppc__) || defined(_M_PPC))
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219 # define ATOMIC_MEMORY_BARRIER \
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220 (__asm__ __volatile__ ("sync" : : : "memory"))
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221 static __inline__ void
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222 SDL_atomic_int_add(volatile int* atomic, int value)
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223 {
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224 int rv,tmp;
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225 __asm__ __volatile__("1: lwarx %0, 0, %3\n"
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226 " add %1, %0, %4\n"
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227 " stwcx. %1, 0, %3\n"
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228 " bne- 1b"
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229 : "=&b" (rv),
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230 "=&r" (tmp),
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231 "=m" (*atomic)
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232 : "b" (atomic),
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233 "r" (value),
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234 "m" (*atomic)
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235 : "cr0",
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236 "memory");
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237 }
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238
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239 static __inline__ int
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240 SDL_atomic_int_xchg_add(volatile int* atomic, int value)
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241 {
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242 int rv,tmp;
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243 __asm__ __volatile__("1: lwarx %0, 0, %3\n"
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244 " add %1, %0, %4\n"
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245 " stwcx. %1, 0, %3\n"
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246 " bne- 1b"
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247 : "=&b" (rv),
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248 "=&r" (tmp),
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249 "=m" (*atomic)
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250 : "b" (atomic),
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251 "r" (value),
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252 "m" (*atomic)
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253 : "cr0",
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254 "memory");
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255 return rv;
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256 }
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257
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258 # if (SIZEOF_VOIDP == 4)
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259 static __inline__ SDL_bool
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260 SDL_atomic_int_cmp_xchg(volatile int* atomic, int oldvalue, int newvalue)
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261 {
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262 int rv;
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263 __asm__ __volatile__(" sync\n"
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264 "1: lwarx %0, 0, %1\n"
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265 " subf. %0, %2, %0\n"
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266 " bne 2f\n"
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267 " stwcx. %3, 0, %1\n"
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268 " bne- 1b\n"
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269 "2: isync"
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270 : "=&r" (rv)
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271 : "b" (atomic),
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272 "r" (oldvalue),
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273 "r"
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274 : "cr0",
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275 "memory");
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276 return (SDL_bool)(rv == 0);
3180
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277 }
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278
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279 static __inline__ SDL_bool
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280 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
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281 {
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282 void* rv;
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283 __asm__ __volatile__("sync\n"
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284 "1: lwarx %0, 0, %1\n"
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285 " subf. %0, %2, %0\n"
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286 " bne 2f\n"
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287 " stwcx. %3, 0, %1\n"
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288 " bne- 1b\n"
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289 "2: isync"
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290 : "=&r" (rv)
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291 : "b" (atomic),
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292 "r" (oldvalue),
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293 "r" (newvalue)
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294 : "cr0",
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295 "memory");
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030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
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296 return (SDL_bool)(rv == 0);
3180
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297 }
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298 # elif (SIZEOF_VOIDP == 8)
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299 static __inline__ SDL_bool
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300 SDL_atomic_int_cmp_xchg(volatile int* atomic, int oldvalue, int newvalue)
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301 {
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302 int rv;
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303 __asm__ __volatile__(" sync\n"
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304 "1: lwarx %0, 0, %1\n"
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305 " extsw %0, %0\n"
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306 " subf. %0, %2, %0\n"
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307 " bne 2f\n"
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diff changeset
308 " stwcx. %3, 0, %1\n"
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309 " bne- 1b\n"
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310 "2: isync"
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311 : "=&r" (rv)
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312 : "b" (atomic),
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313 "r" (oldvalue),
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314 "r"
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315 : "cr0",
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316 "memory");
3181
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317 return (SDL_bool)(rv == 0);
3180
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318 }
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319
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320 static __inline__ SDL_bool
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321 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
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322 {
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323 void* rv;
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parents:
diff changeset
324 __asm__ __volatile__("sync\n"
77d6336711fc First commit for SDL atomic operations.
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parents:
diff changeset
325 "1: ldarx %0, 0, %1\n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
326 " subf. %0, %2, %0\n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
327 " bne 2f\n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
328 " stdcx. %3, 0, %1\n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
329 " bne- 1b\n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
330 "2: isync"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
331 : "=&r" (rv)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
332 : "b" (atomic),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
333 "r" (oldvalue),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
334 "r" (newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
335 : "cr0",
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
336 "memory");
3181
030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
Bob Pendleton <bob@pendleton.com>
parents: 3180
diff changeset
337 return (SDL_bool)(rv == 0);
3180
77d6336711fc First commit for SDL atomic operations.
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parents:
diff changeset
338 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
339 # else
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
340 # error "Your system has an unsupported pointer size"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
341 # endif /* SIZEOF_VOIDP */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
342 #elif defined(__GNUC__) && (defined(__IA64__) || defined(__ia64__))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
343 # define ATOMIC_MEMORY_BARRIER (__sync_synchronize())
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
344 # define SDL_atomic_int_xchg_add(atomic, value) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
345 (__sync_fetch_and_add((atomic),(value)))
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Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
346 # define SDL_atomic_int_add(atomic, value) \
77d6336711fc First commit for SDL atomic operations.
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parents:
diff changeset
347 ((void)__sync_fetch_and_add((atomic),(value)))
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Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
348 # define SDL_atomic_int_cmp_xchg(atomic,oldvalue,newvalue) \
77d6336711fc First commit for SDL atomic operations.
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parents:
diff changeset
349 (__sync_bool_compare_and_swap((atomic),(oldvalue),(newvalue)))
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Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
350 # define SDL_atomic_ptr_cmp_xchg(atomic,oldvalue,newvalue) \
77d6336711fc First commit for SDL atomic operations.
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parents:
diff changeset
351 (__sync_bool_compare_and_swap((long*)(atomic),(long)(oldvalue),(long)(newvalue)))
77d6336711fc First commit for SDL atomic operations.
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parents:
diff changeset
352 #elif defined(__GNUC__) && defined(__LINUX__) && (defined(__mips__) || defined(__MIPS__))
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
353 static __inline__ int
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
354 SDL_atomic_int_xchg_add(volatile int* atomic, int value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
355 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
356 int rv,tmp;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
357 __asm__ __volatile__("1: \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
358 ".set push \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
359 ".set mips2 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
360 "ll %0,%3 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
361 "addu %1,%4,%0 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
362 "sc %1,%2 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
363 ".set pop \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
364 "beqz %1,1b \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
365 : "=&r" (rv),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
366 "=&r" (tmp),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
367 "=m" (*atomic)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
368 : "m" (*atomic),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
369 "r" (value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
370 : "memory");
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
371 return rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
372 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
373
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
374 static __inline__ void
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
375 SDL_atomic_int_add(volatile int* atomic, int value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
376 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
377 int rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
378 __asm__ __volatile__("1: \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
379 ".set push \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
380 ".set mips2 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
381 "ll %0,%2 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
382 "addu %0,%3,%0 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
383 "sc %0,%1 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
384 ".set pop \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
385 "beqz %0,1b \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
386 : "=&r" (rv),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
387 "=m" (*atomic)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
388 : "m" (*atomic),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
389 "r" (value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
390 : "memory");
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
391 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
392
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
393 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
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parents:
diff changeset
394 SDL_atomic_int_cmp_xchg(volatile int* atomic, int oldvalue, int newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
395 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
396 int rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
397 __asm__ __volatile__(" .set push \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
398 " .set noat \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
399 " .set mips3 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
400 "1: ll %0, %2 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
401 " bne %0, %z3, 2f \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
402 " .set mips0 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
403 " move $1, %z4 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
404 " .set mips3 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
405 " sc $1, %1 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
406 " beqz $1, 1b \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
407 " sync \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
408 "2: \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
409 " .set pop \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
410 : "=&r" (rv),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
411 "=R" (*atomic)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
412 : "R" (*atomic),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
413 "Jr" (oldvalue),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
414 "Jr" (newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
415 : "memory");
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
416 return (SDL_bool)rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
417 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
418
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
419 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
420 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
421 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
422 int rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
423 __asm__ __volatile__(" .set push \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
424 " .set noat \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
425 " .set mips3 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
426 # if defined(__mips64)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
427 "1: lld %0, %2 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
428 # else
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
429 "1: ll %0, %2 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
430 # endif
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
431 " bne %0, %z3, 2f \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
432 " move $1, %z4 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
433 # if defined(__mips64)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
434 " sc $1, %1 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
435 # else
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
436 " scd $1, %1 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
437 # endif
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
438 " beqz $1, 1b \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
439 " sync \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
440 "2: \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
441 " .set pop \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
442 : "=&r" (rv),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
443 "=R" (*atomic)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
444 : "R" (*atomic),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
445 "Jr" (oldvalue),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
446 "Jr" (newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
447 : "memory");
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
448 return (SDL_bool)rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
449 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
450 #elif defined(__GNUC__) && defined(__m68k__)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
451 static __inline__ int
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
452 SDL_atomic_int_xchg_add(volatile int* atomic, int value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
453 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
454 int rv = *atomic;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
455 int tmp;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
456 __asm__ __volatile__("1: move%.l %0,%1 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
457 " add%.l %2,%1 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
458 " cas%.l %0,%1,%3 \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
459 " jbne 1b \n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
460 : "=d" (rv),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
461 "=&d" (tmp)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
462 : "d" (value),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
463 "m" (*atomic),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
464 "0" (rv)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
465 : "memory");
3181
030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
Bob Pendleton <bob@pendleton.com>
parents: 3180
diff changeset
466 return (SDL_bool)rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
467 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
468
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
469 static __inline__ void
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
470 SDL_atomic_int_add(volatile int* atomic, int value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
471 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
472 __asm__ __volatile__("add%.l %0,%1"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
473 :
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
474 : "id" (value),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
475 "m" (*atomic)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
476 : "memory");
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
477 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
478
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
479 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
480 SDL_atomic_int_cmp_xchg(volatile int* atomic, int oldvalue, int newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
481 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
482 char rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
483 int readvalue;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
484 __asm__ __volatile__("cas%.l %2,%3,%1\n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
485 "seq %0"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
486 : "=dm" (rv),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
487 "=m" (*atomic),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
488 "=d" (readvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
489 : "d" (newvalue),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
490 "m" (*atomic),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
491 "2" (oldvalue));
3181
030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
Bob Pendleton <bob@pendleton.com>
parents: 3180
diff changeset
492 return (SDL_bool)rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
493 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
494
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
495 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
496 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
497 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
498 char rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
499 int readvalue;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
500 __asm__ __volatile__("cas%.l %2,%3,%1\n"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
501 "seq %0"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
502 : "=dm" (rv),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
503 "=m" (*atomic),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
504 "=d" (readvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
505 : "d" (newvalue),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
506 "m" (*atomic),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
507 "2" (oldvalue));
3181
030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
Bob Pendleton <bob@pendleton.com>
parents: 3180
diff changeset
508 return (SDL_bool)rv;
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
509 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
510 #elif defined(__GNUC__) && defined(__s390__)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
511 # define ATOMIC_INT_CMP_XCHG(atomic,oldvalue,newvalue) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
512 ({ \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
513 int rv = oldvalue; \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
514 __asm__ __volatile__("cs %0, %2, %1" \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
515 : "+d" (rv), \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
516 "=Q" (*(atomic)) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
517 : "d" (newvalue), \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
518 "m" (*(atomic)) \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
519 : "cc"); \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
520 rv == oldvalue; \
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
521 })
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
522 # if (SIZEOF_VOIDP == 4)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
523 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
524 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
525 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
526 void* rv = oldvalue;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
527 __asm__ __volatile__("cs %0, %2, %1"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
528 : "+d" (rv),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
529 "=Q" (*atomic)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
530 : "d" (newvalue),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
531 "m" (*atomic)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
532 : "cc");
3181
030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
Bob Pendleton <bob@pendleton.com>
parents: 3180
diff changeset
533 return (SDL_bool)(rv == oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
534 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
535 # elif (SIZEOF_VOIDP == 8)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
536 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
537 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
538 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
539 void* rv = oldvalue;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
540 void** a = atomic;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
541 __asm__ __volatile__("csg %0, %2, %1"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
542 : "+d" (rv),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
543 "=Q" (*a)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
544 : "d" ((long)(newvalue)),
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
545 "m" (*a)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
546 : "cc");
3181
030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
Bob Pendleton <bob@pendleton.com>
parents: 3180
diff changeset
547 return (SDL_bool)(rv == oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
548 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
549 # else
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
550 # error "Your system has an unsupported pointer size"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
551 # endif /* SIZEOF_VOIDP */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
552 #elif defined(__WIN32__)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
553 # include <windows.h>
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
554 static __inline__ int
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
555 SDL_atomic_int_xchg_add(volatile int* atomic, int value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
556 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
557 return InterlockedExchangeAdd(atomic, value);
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
558 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
559
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
560 static __inline__ void
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
561 SDL_atomic_int_add(volatile int* atomic, int value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
562 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
563 InterlockedExchangeAdd(atomic, value);
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
564 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
565
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
566 # if (WINVER > 0X0400)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
567 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
568 SDL_atmoic_int_cmp_xchg(volatile int* atomic, int oldvalue, int newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
569 {
3181
030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
Bob Pendleton <bob@pendleton.com>
parents: 3180
diff changeset
570 return (SDL_bool)(InterlockedCompareExchangePointer((PVOID*)atomic,
030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
Bob Pendleton <bob@pendleton.com>
parents: 3180
diff changeset
571 (PVOID)newvalue,
030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
Bob Pendleton <bob@pendleton.com>
parents: 3180
diff changeset
572 (PVOID)oldvalue) == oldvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
573 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
574
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
575
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
576 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
577 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
578 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
579 return (InterlockedCompareExchangePointer(atomic, newvalue, oldvalue) == oldvalue);
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
580 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
581 # else /* WINVER <= 0x0400 */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
582 # if (SIZEOF_VOIDP != 4)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
583 # error "InterlockedCompareExchangePointer needed"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
584 # endif
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
585
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
586 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
587 SDL_atomic_int_cmp_xchg(volatile int* atomic, int oldvalue, int newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
588 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
589 return (InterlockedCompareExchange(atomic, newvalue, oldvalue) == oldvalue);
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
590 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
591
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
592 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
593 SDL_atomic_ptr_cmp_xchg(volatile void** atomic, void* oldvalue, void* newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
594 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
595 return (InterlockedCompareExchange(atomic, newvalue, oldvalue) == oldvalue);
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
596 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
597 # endif
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
598 #else /* when all else fails */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
599 # define SDL_ATOMIC_OPS_NOT_SUPPORTED
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
600 # warning "Atomic Ops for this platform not supported!"
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
601 static __inline__ int
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
602 SDL_atomic_int_xchg_add(volatile int* atomic, int value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
603 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
604 int rv = *atomic;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
605 *(atomic) += value;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
606 return rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
607 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
608
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
609 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
610 SDL_atomic_int_cmp_xchg(volatile int* atomic, int oldvalue, int newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
611 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
612 return (*atomic == oldvalue) ?
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
613 ((*atomic = newvalue), SDL_TRUE) : SDL_FALSE;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
614 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
615
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
616 static __inline__ void
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
617 SDL_atomic_int_add(volatile int* atomic, int value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
618 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
619 *atomic += value;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
620 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
621 #endif /* arch & platforms */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
622
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
623 #ifdef ATOMIC_INT_CMP_XCHG
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
624 static __inline__ SDL_bool
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
625 SDL_atomic_int_cmp_xchg(volatile int* atomic, int oldvalue, int newvalue)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
626 {
3181
030899df1af5 OK, had to add some casts to get SDL_atomic.h to compile with C++. testatomic still compiles and runs.
Bob Pendleton <bob@pendleton.com>
parents: 3180
diff changeset
627 return (SDL_bool)ATOMIC_INT_CMP_XCHG(atomic,oldvalue,newvalue);
3180
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
628 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
629
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
630 static __inline__ int
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
631 SDL_atomic_int_xchg_add(volatile int* atomic, int value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
632 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
633 int rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
634 do
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
635 rv = *atomic;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
636 while(!ATOMIC_INT_CMP_XCHG(atomic,rv,rv+value));
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
637 return rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
638 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
639
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
640 static __inline__ void
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
641 SDL_atomic_int_add(volatile int* atomic, int value)
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
642 {
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
643 int rv;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
644 do
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
645 rv = *atomic;
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
646 while(!ATOMIC_INT_CMP_XCHG(atomic,rv,rv+value));
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
647 }
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
diff changeset
648 #endif /* ATOMIC_CMP_XCHG */
77d6336711fc First commit for SDL atomic operations.
Bob Pendleton <bob@pendleton.com>
parents:
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649
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650 #ifdef ATOMIC_MEMORY_BARRIER
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651 # define SDL_atomic_int_get(atomic) \
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652 (ATOMIC_MEMORY_BARRIER,*(atomic))
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653 # define SDL_atomic_int_set(atomic,value) \
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654 (*(atomic)=value,ATOMIC_MEMORY_BARRIER)
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655 #else
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656 # define SDL_atomic_int_get(atomic) (*(atomic))
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657 # define SDL_atomic_int_set(atomic, newvalue) ((void)(*(atomic) = (newvalue)))
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658 #endif /* MEMORY_BARRIER_NEEDED */
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659
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660 #define SDL_atomic_int_inc(atomic) (SDL_atomic_int_add((atomic),1))
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661 #define SDL_atomic_int_dec_test(atomic) (SDL_atomic_int_xchg_add((atomic),-1) == 1)
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662
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663 /* Ends C function definitions when using C++ */
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664 #ifdef __cplusplus
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665 /* *INDENT-OFF* */
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666 }
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667 /* *INDENT-ON* */
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668 #endif
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669
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670 #include "close_code.h"
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671
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672 #endif /* _SDL_atomic_h_ */
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673
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674 /* vi: set ts=4 sw=4 expandtab: */