Why sram_bss is 16 bytes aligned?

luhaiou — Mon, 14 Aug 2023 13:03:50 GMT

I use s32k3 RTD2.01,

file .ld in demo

Why sram_bss is 16 bytes aligned? But sram_data is 4byte aligned.

I wonder if sram_bss can be set to 4byte alignment, and if so, is there any bad effect?

Looking forward to your reply, thank you very much

Re: Why sram_bss is 16 bytes aligned?

Mehul_Patel_NXP — Thu, 26 Oct 2023 21:18:17 GMT

Hi, @luhaiou ,

Very sorry to replying very lately.

Please let us know if the issue is resolved or not.

.bss is uninitialized data and .data is initialized data - so, to initialize data, if you want to use memset(3) (or some such typical routine), to initialize in bulk, then, the 16 byte alignment is likely to facilitate the use of an optimized version of the routine.

I hope this may help.

Thank you. Best regards.

- Mehul Patel

topic Re: Why sram_bss is 16 bytes aligned? in S32K

Why sram_bss is 16 bytes aligned?

Re: Why sram_bss is 16 bytes aligned?