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 for(i=0, pp=s->pg, p=*pp; i<npg; i++, pp++, p=*pp) { 33 if(p->written) { 34 if(p->type == 'z') { 35 Bprint(b, "z"); 36 continue; 37 } 38 Bprint(b, "%c%-11ld %-11lud ", p->type, p->pid, p->offset); 39 } else { 40 Bprint(b, "r"); 41 Bwrite(b, p->data, p->len); 42 if(p->len != Pagesize && i != npg-1) 43 abort(); 44 p->written = 1; 45 p->type = type; 46 p->offset = s->offset + i*Pagesize; 47 p->pid = proc->pid; 48 } 49 } 50 } 51 52 53 void 54 writesnap(Biobuf *b, Proc *p) 55 { 56 int i, n; 57 Data *d; 58 59 for(i=0; i<Npfile; i++) 60 if(d = p->d[i]) { 61 Bprint(b, "%-11ld %s\n%-11lud ", p->pid, pfile[i], d->len); 62 Bwrite(b, d->data, d->len); 63 } 64 65 if(p->text) { 66 Bprint(b, "%-11ld text\n", p->pid); 67 writeseg(b, p, p->text); 68 } 69 70 if(n = p->nseg) { 71 Bprint(b, "%-11ld mem\n%-11d ", p->pid, n); 72 for(i=0; i<n; i++) 73 writeseg(b, p, p->seg[i]); 74 } 75 } 76