typedef BYTE unsigned char;typedef int item_n;typedef int perm_set;struct
PENT{caddr_t v_addr;};typedef struct PENT prec;typedef struct PENT*
prec_t;prec_t mem_hash;BYTE*mem_base;struct PTE{BYTE*p_page;perm_set
p_perms;};typedef struct PTE pte;struct PTP{union{struct*PTP
p_tablep;struct*PTE p_entry;}u;int valid;};typedef struct PTP
(u.p_tablep);int pfree=0;int pcount=0;void mmu_walk_find(va)caddr_t va;{
BYTE*page_addr;if(mmu_base[Level1(va)]->valid==0x0){l1_base=
mmu_base[Level1(va)]->(u.p_tablep)=p_alloc();mmu_base[Level1(va)]->valid=
0x3;for(idx=0;idx<LEVEL1_ENTRIES;idx++)l1_base[idx]->valid=0x0;goto
build_level2;}else l1_base=mmu_base[Level1(va)]->(u.p_tablep);if
(l1_base[Level2(va)]->valid==0x0){build_level2:l2_base=
l1_base[Level2(va)]->(u.p_tablep)=p_alloc();l1_base[Level2(va)]->valid=
0x3;for(idx=0;idx<LEVEL2_ENTRIES;idx++)l2_base[idx]->valid=0x0;goto
build_page;}else l2_base=mmu_base[Level2(va)]->(u.p_tablep);
page_addr=l2_base[Level2(va)]->valid;}void*a_translate(va_op,v_addr)int
va_op;caddr_t v_addr;{register prec_t bucket;register caddr_t p_addr;
bucket=mem_hash+((((v_addr)>>ITEMBITS))&hash_mask);do{if
(bucket->v_addr==((v_addr)>>ITEMBITS){if(!(bucket->perm_set&va_op))
goto prot_fault;return mem_base+v_addr;}}while((bucket++)->v_addr!=
((caddr_t)0));page_miss:p_addr=(--bucket)->p_addr;page_type:switch
(p_addr){case BUCKET_FULL:enlarge_hash_table(mem_hash);case((caddr_t)0):
p_addr=fill_item_entry(va_op,v_addr);goto page_type;case((caddr_t)1):
default:((void)(((0))?0:(__eprintf("Failed assertion`%s'at line%d
of`%s'.\n","FALSE",327,"b.c"),0)));}}void flush_hash(hasht,
hash_size)prec_t hasht;int hash_size;{register prec_t bucket;register int
idx;bucket=hasht;for(idx=(hash_size*3)-1;idx>=0;idx--){
bucket->v_addr=((caddr_t)0);bucket->p_addr=((caddr_t)0);
bucket->perm_set=VA_EMPTY;}}void init_mem(){mem_base=(BYTE*)calloc(1024
,(1<<13));((void)((mem_base!=(BYTE*)0)?0:(__eprintf("Failed
assertion`%s'at line%d of`%s'.\n","mem_base!=(BYTE*)0",366,"b.c"),
0)));hash_num=INIT_NUM_ENTRIES*3;mem_hash=(prec_t)calloc(hash_num,
sizeof(prec));((void)((mem_hash!=(prec_t)0)?0:(__eprintf("Failed
assertion`%s'at line%d of`%s'.\n","mem_hash!=(prec_t)0",370,"b.c"),
0)));flush_hash(mem_hash,32);build_ptables(mem_base,1024*(1<<13));}
struct tm{int tm_sec;int tm_min;int tm_hour;int tm_mday;int tm_mon;int
tm_year;int tm_wday;int tm_yday;int tm_isdst;char*tm_zone;long tm_gmtoff;};