void userinit(void) { Proc *p; Segment *s; KMap *k; char **av; Page *pg; p = newproc(); p->pgrp = newpgrp(); p->egrp = smalloc(sizeof(Egrp)); p->egrp->ref = 1; p->fgrp = dupfgrp(nil); p->rgrp = newrgrp(); p->procmode = 0640; kstrdup(&eve, ""); kstrdup(&p->text, "*init*"); kstrdup(&p->user, eve); procsetup(p); /* * Kernel Stack */ p->sched.pc = (ulong)init0; p->sched.sp = (ulong)p->kstack+KSTACK-MAXSYSARG*BY2WD; /* * User Stack, pass input arguments to boot process */ s = newseg(SG_STACK, USTKTOP-USTKSIZE, USTKSIZE/BY2PG); p->seg[SSEG] = s; pg = newpage(1, 0, USTKTOP-BY2PG); segpage(s, pg); k = kmap(pg); for(av = (char**)argbuf; *av; av++) *av += (USTKTOP - sizeof(argbuf)) - (ulong)argbuf; memmove((uchar*)VA(k) + BY2PG - sizeof(argbuf), argbuf, sizeof argbuf); kunmap(k); /* * Text */ s = newseg(SG_TEXT, UTZERO, 1); s->flushme++; p->seg[TSEG] = s; pg = newpage(1, 0, UTZERO); pg->txtflush = ~0; segpage(s, pg); k = kmap(s->map[0]->pages[0]); memmove((uchar*)VA(k), initcode, sizeof initcode); kunmap(k); ready(p); }
void userinit(void) { Proc *p; Segment *s; KMap *k; Page *pg; p = newproc(); p->pgrp = newpgrp(); p->egrp = smalloc(sizeof(Egrp)); p->egrp->ref = 1; p->fgrp = dupfgrp(nil); p->rgrp = newrgrp(); p->procmode = 0640; kstrdup(&eve, ""); kstrdup(&p->text, "*init*"); kstrdup(&p->user, eve); p->fpstate = FPinit; /* * Stack * * N.B. The -12 for the stack pointer is important. * 4 bytes for gotolabel's return PC */ p->sched.pc = (ulong)init0; p->sched.sp = (ulong)p->kstack+KSTACK-(sizeof(Sargs)+BY2WD); /* * User Stack */ s = newseg(SG_STACK, USTKTOP-USTKSIZE, USTKSIZE/BY2PG); p->seg[SSEG] = s; pg = newpage(1, 0, USTKTOP-BY2PG); segpage(s, pg); /* * Text */ s = newseg(SG_TEXT, UTZERO, 1); s->flushme++; p->seg[TSEG] = s; pg = newpage(1, 0, UTZERO); memset(pg->cachectl, PG_TXTFLUSH, sizeof(pg->cachectl)); segpage(s, pg); k = kmap(s->map[0]->pages[0]); memmove((ulong*)VA(k), initcode, sizeof initcode); kunmap(k); ready(p); }
/* * create the first process */ void userinit(void) { Proc *p; Segment *s; KMap *k; Page *pg; /* no processes yet */ up = nil; p = newproc(); p->pgrp = newpgrp(); p->egrp = smalloc(sizeof(Egrp)); p->egrp->ref = 1; p->fgrp = dupfgrp(nil); p->rgrp = newrgrp(); p->procmode = 0640; kstrdup(&eve, ""); kstrdup(&p->text, "*init*"); kstrdup(&p->user, eve); /* * Kernel Stack */ p->sched.pc = (ulong)init0; p->sched.sp = (ulong)p->kstack+KSTACK-(sizeof(Sargs)+BY2WD); /* * User Stack */ s = newseg(SG_STACK, USTKTOP-USTKSIZE, USTKSIZE/BY2PG); p->seg[SSEG] = s; pg = newpage(1, 0, USTKTOP-BY2PG); segpage(s, pg); k = kmap(pg); bootargs(VA(k)); kunmap(k); /* * Text */ s = newseg(SG_TEXT, UTZERO, 1); p->seg[TSEG] = s; pg = newpage(1, 0, UTZERO); memset(pg->cachectl, PG_TXTFLUSH, sizeof(pg->cachectl)); segpage(s, pg); k = kmap(s->map[0]->pages[0]); memmove((ulong*)VA(k), initcode, sizeof initcode); kunmap(k); ready(p); }
void userinit(void) { Proc *p; Segment *s; KMap *k; Page *pg; p = newproc(); p->pgrp = newpgrp(); p->egrp = smalloc(sizeof(Egrp)); p->egrp->ref = 1; p->fgrp = dupfgrp(nil); p->rgrp = newrgrp(); p->procmode = 0640; kstrdup(&eve, ""); kstrdup(&p->text, "*init*"); kstrdup(&p->user, eve); /* * Kernel Stack * * N.B. make sure there's enough space for syscall to check * for valid args and * space for gotolabel's return PC * AMD64 stack must be quad-aligned. */ p->sched.pc = PTR2UINT(init0); p->sched.sp = PTR2UINT(p->kstack+KSTACK-sizeof(up->arg)-sizeof(uintptr)); p->sched.sp = STACKALIGN(p->sched.sp); /* * User Stack * * Technically, newpage can't be called here because it * should only be called when in a user context as it may * try to sleep if there are no pages available, but that * shouldn't be the case here. */ s = newseg(SG_STACK, USTKTOP-USTKSIZE, USTKSIZE/BIGPGSZ); p->seg[SSEG] = s; pg = newpage(1, 0, USTKTOP-BIGPGSZ, BIGPGSZ, -1); segpage(s, pg); k = kmap(pg); bootargs(VA(k)); kunmap(k); /* * Text */ s = newseg(SG_TEXT, UTZERO, 1); s->flushme++; p->seg[TSEG] = s; pg = newpage(1, 0, UTZERO, BIGPGSZ, -1); memset(pg->cachectl, PG_TXTFLUSH, sizeof(pg->cachectl)); segpage(s, pg); k = kmap(s->map[0]->pages[0]); memmove(UINT2PTR(VA(k)), initcode, sizeof initcode); kunmap(k); ready(p); }
void userinit(void) { void *v; Proc *p; Segment *s; Page *pg; p = newproc(); p->pgrp = newpgrp(); p->egrp = smalloc(sizeof(Egrp)); p->egrp->ref = 1; p->fgrp = dupfgrp(nil); p->rgrp = newrgrp(); p->procmode = 0640; kstrdup(&eve, ""); kstrdup(&p->text, "*init*"); kstrdup(&p->user, eve); p->fpstate = FPinit; fpoff(); /* * Kernel Stack * * N.B. make sure there's enough space for syscall to check * for valid args and * 4 bytes for gotolabel's return PC */ p->sched.pc = (ulong)init0; p->sched.sp = (ulong)p->kstack+KSTACK-(sizeof(Sargs)+BY2WD); /* * User Stack * * N.B. cannot call newpage() with clear=1, because pc kmap * requires up != nil. use tmpmap instead. */ s = newseg(SG_STACK, USTKTOP-USTKSIZE, USTKSIZE/BY2PG); p->seg[SSEG] = s; pg = newpage(0, 0, USTKTOP-BY2PG); v = tmpmap(pg); memset(v, 0, BY2PG); segpage(s, pg); bootargs(v); tmpunmap(v); /* * Text */ s = newseg(SG_TEXT, UTZERO, 1); s->flushme++; p->seg[TSEG] = s; pg = newpage(0, 0, UTZERO); memset(pg->cachectl, PG_TXTFLUSH, sizeof(pg->cachectl)); segpage(s, pg); v = tmpmap(pg); memset(v, 0, BY2PG); memmove(v, initcode, sizeof initcode); tmpunmap(v); ready(p); }
/* * create the first process */ void userinit(void) { Proc *p; Segment *s; KMap *k; Page *pg; /* no processes yet */ up = nil; p = newproc(); p->pgrp = newpgrp(); p->egrp = smalloc(sizeof(Egrp)); p->egrp->ref = 1; p->fgrp = dupfgrp(nil); p->rgrp = newrgrp(); p->procmode = 0640; kstrdup(&eve, ""); kstrdup(&p->text, "*init*"); kstrdup(&p->user, eve); /* * Kernel Stack */ p->sched.pc = PTR2UINT(init0); p->sched.sp = PTR2UINT(p->kstack+KSTACK-sizeof(up->s.args)-sizeof(uintptr)); p->sched.sp = STACKALIGN(p->sched.sp); /* * User Stack * * Technically, newpage can't be called here because it * should only be called when in a user context as it may * try to sleep if there are no pages available, but that * shouldn't be the case here. */ s = newseg(SG_STACK, USTKTOP-USTKSIZE, USTKSIZE/BY2PG); p->seg[SSEG] = s; pg = newpage(1, 0, USTKTOP-BY2PG); segpage(s, pg); k = kmap(pg); bootargs(VA(k)); kunmap(k); /* * Text */ s = newseg(SG_TEXT, UTZERO, 1); s->flushme++; p->seg[TSEG] = s; pg = newpage(1, 0, UTZERO); memset(pg->cachectl, PG_TXTFLUSH, sizeof(pg->cachectl)); segpage(s, pg); k = kmap(s->map[0]->pages[0]); memmove(UINT2PTR(VA(k)), initcode, sizeof initcode); kunmap(k); ready(p); }
void userinit(void) { Mach *m = machp(); Proc *p; Segment *s; KMap *k; Page *pg; int sno; p = newproc(); p->pgrp = newpgrp(); p->egrp = smalloc(sizeof(Egrp)); p->egrp->ref = 1; p->fgrp = dupfgrp(nil); p->rgrp = newrgrp(); p->procmode = 0640; kstrdup(&eve, ""); kstrdup(&p->text, "*init*"); kstrdup(&p->user, eve); /* * Kernel Stack * * N.B. make sure there's enough space for syscall to check * for valid args and * space for gotolabel's return PC * AMD64 stack must be quad-aligned. */ p->sched.pc = PTR2UINT(init0); p->sched.sp = PTR2UINT(p->kstack+KSTACK-sizeof(m->externup->arg)-sizeof(uintptr_t)); p->sched.sp = STACKALIGN(p->sched.sp); /* * User Stack * * Technically, newpage can't be called here because it * should only be called when in a user context as it may * try to sleep if there are no pages available, but that * shouldn't be the case here. */ sno = 0; s = newseg(SG_STACK|SG_READ|SG_WRITE, USTKTOP-USTKSIZE, USTKSIZE/ BIGPGSZ); p->seg[sno++] = s; pg = newpage(1, 0, USTKTOP-BIGPGSZ, BIGPGSZ, -1); segpage(s, pg); k = kmap(pg); bootargs(VA(k)); kunmap(k); /* * Text */ s = newseg(SG_TEXT|SG_READ|SG_EXEC, UTZERO, 1); s->flushme++; p->seg[sno++] = s; pg = newpage(1, 0, UTZERO, BIGPGSZ, -1); memset(pg->cachectl, PG_TXTFLUSH, sizeof(pg->cachectl)); segpage(s, pg); k = kmap(s->map[0]->pages[0]); /* UTZERO is only needed until we make init not have 2M block of zeros at the front. */ memmove(UINT2PTR(VA(k) + init_code_start - UTZERO), init_code_out, sizeof(init_code_out)); kunmap(k); /* * Data */ s = newseg(SG_DATA|SG_READ|SG_WRITE, UTZERO + BIGPGSZ, 1); s->flushme++; p->seg[sno++] = s; pg = newpage(1, 0, UTZERO + BIGPGSZ, BIGPGSZ, -1); memset(pg->cachectl, PG_TXTFLUSH, sizeof(pg->cachectl)); segpage(s, pg); k = kmap(s->map[0]->pages[0]); /* This depends on init having a text segment < 2M. */ memmove(UINT2PTR(VA(k) + init_data_start - (UTZERO + BIGPGSZ)), init_data_out, sizeof(init_data_out)); kunmap(k); ready(p); }