topic Re: Asking about pragma memory section in GCC build 1620 in S32DS 3.3 in S32 Design Studio

Asking about pragma memory section in GCC build 1620 in S32DS 3.3

namnguyenviet — Fri, 14 Aug 2020 13:00:09 GMT

Hello guys,

In NXP GCC build 1620 integrated in S32DS 3.3, is that pragma for memory section has already supported? If yes, then do we have a note in the release note for that update? My customer in concern whether it's supported in our NXP GCC, as it's required in AUTOSAR OS concept.

Many thanks,

Nam

Re: Asking about pragma memory section in GCC build 1620 in S32DS 3.3

alexanderfedoto — Mon, 17 Aug 2020 20:37:29 GMT

According to release notes in compiler directory (see <>/S32DS.3.3/S32DS/build_tools/gcc_b1620/gcc-6.3-arm32-eabi/releasenotes.pdf) - yes it is:

Re: Asking about pragma memory section in GCC build 1620 in S32DS 3.3

comsytec — Tue, 03 May 2022 07:21:39 GMT

In version of 9.2.0 #pragma GCC section text ".mcal_text" has no effect for functions like snprintf, vsnprintf ... (standard functions) despite there is custom implementation of them and there is no prototype include before using desired mapping

#define ETH_43_PFE_START_SEC_CODE
#include "Eth_43_PFE_MemMap.h"

extern int snprintf(char_t *str, size_t size, const char_t *pcocStr, ...);
extern int vsnprintf(char_t *str, size_t size, const char_t *pcocStr, va_list VarArg);

Only __attribute__ is solution. Perhaps this is a bug.

Re: Asking about pragma memory section in GCC build 1620 in S32DS 3.3

comsytec — Tue, 03 May 2022 08:19:46 GMT

For builtin functions need to add options like
-fno-builtin-memcpy
-fno-builtin-memset
-fno-builtin-memcmp
-fno-builtin-memmove
-fno-builtin-strcmp
-fno-builtin-strcpy
-fno-builtin-strncpy
-fno-builtin-strlen
-fno-builtin-abs
-fno-builtin-snprintf
-fno-builtin-vsnprintf

and then the

#define ETH_43_PFE_START_SEC_CODE
#include "Eth_43_PFE_MemMap.h"

achieving desired effect