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  25. <title>PowerPC Atomic Memory Operation Functions (Using the GNU Compiler Collection (GCC))</title>

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  75. <hr>

  76. <a name="PowerPC-Atomic-Memory-Operation-Functions-1"></a>

  77. <h4 class="subsection">6.60.25 PowerPC Atomic Memory Operation Functions</h4>

  78. <p>ISA 3.0 of the PowerPC added new atomic memory operation (amo)

  79. instructions.  GCC provides support for these instructions in 64-bit

  80. environments.  All of the functions are declared in the include file

  81. <code>amo.h</code>.

  82. </p>

  83. <p>The functions supported are:

  84. </p>

  85. <div class="smallexample">

  86. <pre class="smallexample">#include &lt;amo.h&gt;

  87. 

  88. uint32_t amo_lwat_add (uint32_t *, uint32_t);

  89. uint32_t amo_lwat_xor (uint32_t *, uint32_t);

  90. uint32_t amo_lwat_ior (uint32_t *, uint32_t);

  91. uint32_t amo_lwat_and (uint32_t *, uint32_t);

  92. uint32_t amo_lwat_umax (uint32_t *, uint32_t);

  93. uint32_t amo_lwat_umin (uint32_t *, uint32_t);

  94. uint32_t amo_lwat_swap (uint32_t *, uint32_t);

  95. 

  96. int32_t amo_lwat_sadd (int32_t *, int32_t);

  97. int32_t amo_lwat_smax (int32_t *, int32_t);

  98. int32_t amo_lwat_smin (int32_t *, int32_t);

  99. int32_t amo_lwat_sswap (int32_t *, int32_t);

  100. 

  101. uint64_t amo_ldat_add (uint64_t *, uint64_t);

  102. uint64_t amo_ldat_xor (uint64_t *, uint64_t);

  103. uint64_t amo_ldat_ior (uint64_t *, uint64_t);

  104. uint64_t amo_ldat_and (uint64_t *, uint64_t);

  105. uint64_t amo_ldat_umax (uint64_t *, uint64_t);

  106. uint64_t amo_ldat_umin (uint64_t *, uint64_t);

  107. uint64_t amo_ldat_swap (uint64_t *, uint64_t);

  108. 

  109. int64_t amo_ldat_sadd (int64_t *, int64_t);

  110. int64_t amo_ldat_smax (int64_t *, int64_t);

  111. int64_t amo_ldat_smin (int64_t *, int64_t);

  112. int64_t amo_ldat_sswap (int64_t *, int64_t);

  113. 

  114. void amo_stwat_add (uint32_t *, uint32_t);

  115. void amo_stwat_xor (uint32_t *, uint32_t);

  116. void amo_stwat_ior (uint32_t *, uint32_t);

  117. void amo_stwat_and (uint32_t *, uint32_t);

  118. void amo_stwat_umax (uint32_t *, uint32_t);

  119. void amo_stwat_umin (uint32_t *, uint32_t);

  120. 

  121. void amo_stwat_sadd (int32_t *, int32_t);

  122. void amo_stwat_smax (int32_t *, int32_t);

  123. void amo_stwat_smin (int32_t *, int32_t);

  124. 

  125. void amo_stdat_add (uint64_t *, uint64_t);

  126. void amo_stdat_xor (uint64_t *, uint64_t);

  127. void amo_stdat_ior (uint64_t *, uint64_t);

  128. void amo_stdat_and (uint64_t *, uint64_t);

  129. void amo_stdat_umax (uint64_t *, uint64_t);

  130. void amo_stdat_umin (uint64_t *, uint64_t);

  131. 

  132. void amo_stdat_sadd (int64_t *, int64_t);

  133. void amo_stdat_smax (int64_t *, int64_t);

  134. void amo_stdat_smin (int64_t *, int64_t);

  135. </pre></div>

  136. 

  137. 

  138. 

  139. 

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