Commit 304e0f4e authored by Jens Gustedt's avatar Jens Gustedt
Browse files

introduce P99_MARK to mark assembler

parent 884b5b42
......@@ -74,6 +74,28 @@ P99_PREFER( \
** @brief mark the produced assembler with a comment that contains
** the source line number and the token @a X
#ifdef __GNUC__
# define P99_MARK(X) ({ __asm__ volatile ("# " P99_STRINGIFY(__LINE__: X)); })
# define P99_MARK(X) P99_NOP
** @brief mark the assembler of a block just before and after
** @remark @a X should be an identifier token
#define P99_BLK_MARK(X) \
P00_BLK_BEFAFT(P99_MARK(P99_PASTE2(X, _bef)), \
P99_MARK(P99_PASTE2(X, _end)))
/** @warning Utilities that change control flow in an unexpected way may result in the loss of some modifications that are effected on variables. A modern compiler should tell you when you are in such a situation. If it is the case you'd have to declare the variable in question with the @c volatile qualifier. For an explanation see ::P99_UNWIND_PROTECT. **/
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