1 /* 2 * Machine dependent constants for powerpc64. 3 */ 4 5 #define USRSTACK VM_MAXUSER_ADDRESS 6 7 /* 8 * Virtual memory related constants, all in bytes 9 */ 10 #define MAXTSIZ ((paddr_t)256*1024*1024) /* max text size */ 11 #ifndef DFLDSIZ 12 #define DFLDSIZ ((paddr_t)512*1024*1024) /* initial data size limit */ 13 #endif 14 #ifndef MAXDSIZ 15 #define MAXDSIZ ((paddr_t)32*1024*1024*1024) /* max data size */ 16 #endif 17 #ifndef BRKSIZ 18 #define BRKSIZ ((paddr_t)16*1024*1024*1024) /* heap gap size */ 19 #endif 20 #ifndef DFLSSIZ 21 #define DFLSSIZ ((paddr_t)2*1024*1024) /* initial stack size limit */ 22 #endif 23 #ifndef MAXSSIZ 24 #define MAXSSIZ ((paddr_t)32*1024*1024) /* max stack size */ 25 #endif 26 27 #define STACKGAP_RANDOM 256*1024 28 29 /* 30 * Size of shared memory map 31 */ 32 #ifndef SHMMAXPGS 33 #define SHMMAXPGS 1024 34 #endif 35 36 /* 37 * Size of User Raw I/O map 38 */ 39 #define USRIOSIZE 300 40 41 #define VM_PHYS_SIZE (USRIOSIZE * PAGE_SIZE) 42 43 #define VM_PHYSSEG_MAX 32 44 #define VM_PHYSSEG_STRAT VM_PSTRAT_BSEARCH 45 46 #define VM_MIN_ADDRESS ((vaddr_t)PAGE_SIZE) 47 #define VM_MAXUSER_ADDRESS 0xbffffffffffff000UL 48 #define VM_MAX_ADDRESS 0xffffffffffffffffUL 49 #define VM_MIN_KERNEL_ADDRESS 0xc000000000000000UL 50 #define VM_MAX_KERNEL_ADDRESS 0xc0000007ffffffffUL 51