Correct way to use L2_PRIV0 and L2_SHARED naturally

[2080fresh]

Hi, I'm working on academic research on pulpissimo. Thank you for the open-source nature.

I've found that pulpissimo has a memory map with

L2_PRIV0 (expected to be L1D cache 0x1c000000 ~ 0x1c008000) - 32kB
L2_PRIV1 (L1I cache 0x1c008000 ~ 0x1c010000) - 32kB
L2_SHARED (0x1c010000 ~ 0x1c080000)
The problem is that if I use an array or 'malloc' above a certain level, it seems the data overflows L2_PRIV0(L1D) and uses L2_PRIV1(which is the space of the PC address). So when the pulpissimo starts to read the first PC address (which is set on ENTRY_POINT=0x1c008080), it spits an illegal instruction error on 0x1c008080.

I wonder why when the data is flushed on L2_PRIV0, it uses L2_PRIV1, not L2_SHARED. It is common that It uses L2 when the L1D is full.

I want to know the way how to use L2_PRIV0 and L2_SHARED naturally for using lots of mallocs.