3 Commits

Author	SHA1	Message	Date
Gunar Schorcht	bf331bd54b	cpu/esp32: use printf/puts from newlib ... Initializing the stdio file descriptors in global reent structure with newlib fake stdio file descriptors led to the problem that newlib stdio functions printf and puts were not working since they can't operate on these fake stdio file descriptors. Therefore, this initialization was removed. Now, the real stdio file descriptors as created automatically by newlib are used. Specific functions `printf`, `puts`, `getchar`and `putchar` are not required any longer and are removed now.	2019-08-19 15:14:32 +02:00
Gunar Schorcht	2215f29883	cpu/esp32: add memset that cannot be optimized out ... Adds a memset function `system_secure_memset` which cannot be optimized out by the compiler. It uses the libsodium approach of weak symbols. Function system_secure_memset calls the standard memset. Calling an empty function declared with weak attribute after the memset call, prevents the compiler to optimize it out. The overhead is only one function call.	2019-01-17 13:50:56 +01:00
Schorcht	3ac99877ac	cpu: add esp32	2018-10-08 12:20:49 +02:00