8 * This file provides two assertion macros: assert() (for run-time
9 * assertions) and linker_assert() (for link-time assertions).
19 /** printf() for assertions
21 * This function exists so that the assert() macro can expand to
22 * printf() calls without dragging the printf() prototype into scope.
24 * As far as the compiler is concerned, assert_printf() and printf() are
25 * completely unrelated calls; it's only at the assembly stage that
26 * references to the assert_printf symbol are collapsed into references
27 * to the printf symbol.
29 extern int __attribute__ (( format ( printf, 1, 2 ) ))
30 assert_printf ( const char *fmt, ... ) asm ( "printf" );
33 * Assert a condition at run-time.
35 * If the condition is not true, a debug message will be printed.
36 * Assertions only take effect in debug-enabled builds (see DBG()).
38 * @todo Make an assertion failure abort the program
41 #define assert( condition ) \
43 if ( ASSERTING && ! (condition) ) { \
44 assert_printf ( "assert(%s) failed at %s line " \
45 "%d [%s]\n", #condition, __FILE__, \
46 __LINE__, __FUNCTION__ ); \
51 * Assert a condition at link-time.
53 * If the condition is not true, the link will fail with an unresolved
54 * symbol (error_symbol).
56 * This macro is gPXE-specific. Do not use this macro in code
57 * intended to be portable.
60 #define linker_assert( condition, error_symbol ) \
61 if ( ! (condition) ) { \
62 extern void error_symbol ( void ); \
66 #endif /* _ASSERT_H */