On some architectures, ARM for instance, the data and instruction caches
are not coherent with each other. This is a problem for the -run feature
since instructions are written in memory, and are thus written in the
data cache first and then later flushed to the main memory. If the
instructions are executed before they are pushed out of the cache, then
the processor will fetch the old content from the memory and not the
newly generated code. The solution is to flush from the data cache all
the data in the memory region containing the instructions and to
invalidate the same region in the instruction cache.
- except for CONFIG_SYSROOT and CONFIG_TCCDIR
Strictly neccessary it is only for CONFIG_MULTIARCHDIR
because otherwise if it's in config.h it is impossible to
leave it undefined.
But it is also nicer not to use these definitions for
cross-compilers.
- Also:
lib/Makefile : include ../Makefile for CFLAGS
lib/libtcc1.c : fix an issue compiling tcc with tcc on x64
- add __builtin_va_arg_types to check how arguments were passed
- move most code of stdarg into libtcc1.c
- remove __builtin_malloc and __builtin_free
- add a test case based on the bug report
(http://www.mail-archive.com/tinycc-devel@nongnu.org/msg03036.html)
