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1 /* -----------------------------------------------------------------------
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2 debug.c - Copyright (c) 1996 Red Hat, Inc.
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3
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4 Permission is hereby granted, free of charge, to any person obtaining
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5 a copy of this software and associated documentation files (the
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6 ``Software''), to deal in the Software without restriction, including
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7 without limitation the rights to use, copy, modify, merge, publish,
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8 distribute, sublicense, and/or sell copies of the Software, and to
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9 permit persons to whom the Software is furnished to do so, subject to
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10 the following conditions:
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11
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12 The above copyright notice and this permission notice shall be included
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13 in all copies or substantial portions of the Software.
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14
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15 THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND,
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16 EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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17 MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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18 NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
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19 HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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20 WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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21 OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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22 DEALINGS IN THE SOFTWARE.
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23 ----------------------------------------------------------------------- */
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24
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25 #include <ffi.h>
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26 #include <ffi_common.h>
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27 #include <stdlib.h>
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28 #include <stdio.h>
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29
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30 /* General debugging routines */
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31
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32 void ffi_stop_here(void)
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33 {
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34 /* This function is only useful for debugging purposes.
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35 Place a breakpoint on ffi_stop_here to be notified of
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36 significant events. */
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37 }
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38
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39 /* This function should only be called via the FFI_ASSERT() macro */
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40
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41 void ffi_assert(char *expr, char *file, int line)
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42 {
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43 fprintf(stderr, "ASSERTION FAILURE: %s at %s:%d\n", expr, file, line);
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44 ffi_stop_here();
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45 abort();
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46 }
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47
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48 /* Perform a sanity check on an ffi_type structure */
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49
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50 void ffi_type_test(ffi_type *a, char *file, int line)
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51 {
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52 FFI_ASSERT_AT(a != NULL, file, line);
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53
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54 FFI_ASSERT_AT(a->type <= FFI_TYPE_LAST, file, line);
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55 FFI_ASSERT_AT(a->type == FFI_TYPE_VOID || a->size > 0, file, line);
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56 FFI_ASSERT_AT(a->type == FFI_TYPE_VOID || a->alignment > 0, file, line);
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57 FFI_ASSERT_AT((a->type != FFI_TYPE_STRUCT && a->type != FFI_TYPE_COMPLEX)
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58 || a->elements != NULL, file, line);
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59 FFI_ASSERT_AT(a->type != FFI_TYPE_COMPLEX
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60 || (a->elements != NULL
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61 && a->elements[0] != NULL && a->elements[1] == NULL),
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62 file, line);
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63
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64 }
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