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1 /* Supply a set of generic atomic functions to test the compiler make the
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2 calls properly. */
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3 /* { dg-do compile } */
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4 /* { dg-options "-w" } */
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5
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6 /* Test that the generic builtins make calls as expected. */
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7
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8 #include <stdlib.h>
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9 #include <stdbool.h>
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10 #include <string.h>
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11
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12 void
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13 __atomic_exchange (size_t size, void *obj, void *val, void *ret, int model)
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14 {
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15 /* Copy old value into *ret. */
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16 memcpy (ret, obj, size);
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17 /* Copy val into object. */
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18 memcpy (obj, val, size);
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19 }
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20
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21
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22 /* Note that the external version of this routine has the boolean weak/strong
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23 parameter removed. This is required by the external library. */
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24 bool
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25 __atomic_compare_exchange (size_t size, void *obj, void *expected,
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26 void *desired, int model1, int model2)
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27 {
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28 bool ret;
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29 if (!memcmp (obj, expected, size))
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30 {
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31 memcpy (obj, desired, size);
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32 ret = true;
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33 }
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34 else
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35 {
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36 memcpy (expected, obj, size);
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37 ret = false;
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38 }
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39
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40 /* Make sure the parameters have been properly adjusted for the external
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41 function call (no weak/strong parameter. */
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42 if (model1 != __ATOMIC_SEQ_CST || model2 != __ATOMIC_ACQUIRE)
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43 ret = !ret;
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44
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45 return ret;
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46 }
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47
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48
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49 void __atomic_load (size_t size, void *obj, void *ret, int model)
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50 {
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51 memcpy (ret, obj, size);
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52 }
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53
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54
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55 void __atomic_store (size_t size, void *obj, void *val, int model)
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56 {
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57 memcpy (obj, val, size);
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58 }
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