newlib-cygwin/newlib/libc/sys/arc/mem-layout.c

22 lines
765 B
C

/* Ideally this kind of stuff is specified in a linker script. It's not clear
what the default linker script should do, so for now we have this. */
/* Keep this file separate from sbrk.c so the programmer can supply his/her
own _sbrk_r. This file could go in crt0.S, but I want to keep this in C.
This is all just an experiment anyway. */
#ifndef STACK_SIZE
/* Cache lines recycle at 4096 I think, and 4096 is listed as the page size,
so we make the stack size a multiple of it. Not that it's relevant or
anything, but why not base it on *something*? */
#define STACK_SIZE (4096 * 4)
#endif
int stack_size asm ("stack_size") = STACK_SIZE;
#ifndef SBRK_SIZE
#define SBRK_SIZE (4096 * 32)
#endif
int sbrk_size asm ("sbrk_size") = SBRK_SIZE;