1 #include <u.h> 2 #include <libc.h> 3 #include <bio.h> 4 #include "snap.h" 5 6 char *pfile[Npfile] = { 7 [Psegment] "segment", 8 [Pfd] "fd", 9 [Pfpregs] "fpregs", 10 [Pnoteid] "noteid", 11 [Pkregs] "kregs", 12 [Pns] "ns", 13 [Pproc] "proc", 14 [Pregs] "regs", 15 [Pstatus] "status", 16 }; 17 18 static void 19 writeseg(Biobuf *b, Proc *proc, Seg *s) 20 { 21 int i, npg; 22 Page **pp, *p; 23 int type; 24 25 type = proc->text == s ? 't' : 'm'; 26 27 npg = (s->len+Pagesize-1)/Pagesize; 28 if(npg != s->npg) 29 abort(); 30 31 Bprint(b, "%-11lud %-11lud ", s->offset, s->len); 32 if(s->len == 0) 33 return; 34 35 for(i=0, pp=s->pg, p=*pp; i<npg; i++, pp++, p=*pp) { 36 if(p->written) { 37 if(p->type == 'z') { 38 Bprint(b, "z"); 39 continue; 40 } 41 Bprint(b, "%c%-11ld %-11lud ", p->type, p->pid, p->offset); 42 } else { 43 Bprint(b, "r"); 44 Bwrite(b, p->data, p->len); 45 if(p->len != Pagesize && i != npg-1) 46 abort(); 47 p->written = 1; 48 p->type = type; 49 p->offset = s->offset + i*Pagesize; 50 p->pid = proc->pid; 51 } 52 } 53 } 54 55 56 void 57 writesnap(Biobuf *b, Proc *p) 58 { 59 int i, n; 60 Data *d; 61 62 for(i=0; i<Npfile; i++) 63 if(d = p->d[i]) { 64 Bprint(b, "%-11ld %s\n%-11lud ", p->pid, pfile[i], d->len); 65 Bwrite(b, d->data, d->len); 66 } 67 68 if(p->text) { 69 Bprint(b, "%-11ld text\n", p->pid); 70 writeseg(b, p, p->text); 71 } 72 73 if(n = p->nseg) { 74 Bprint(b, "%-11ld mem\n%-11d ", p->pid, n); 75 for(i=0; i<n; i++) 76 writeseg(b, p, p->seg[i]); 77 } 78 } 79