o5r/plan9port
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions

Start working through proper handling of pthreads when

Browse source 
debugging Linux core dumps.  Pthreads for active processes
is still not supported, nor are other systems.
This commit is contained in:
rsc 2005-01-23 22:33:04 +00:00
parent a0e8d02d09
commit dd944ec72a
14 changed files with 528 additions and 415 deletions
Download patch file Download diff file Expand all files Collapse all files

109
src/libmach/elfcorelinux386.c
View file

@ -34,6 +34,10 @@ struct Status
UregLinux386 reg;
u32int fpvalid;
};
enum
{
StatusSize = sizeof(Status),
};
struct Psinfo
{
@ -51,6 +55,10 @@ struct Psinfo
char fname[16];
char psargs[80];
};
enum
{
PsinfoSize = sizeof(Psinfo),
};
int
coreregslinux386(Elf *elf, ElfNote *note, uchar **up)
@ -65,8 +73,9 @@ coreregslinux386(Elf *elf, ElfNote *note, uchar **up)
}
s = (Status*)note->desc;
l = &s->reg;
if((u = _linux2ureg386(l)) == nil)
if((u = malloc(sizeof *u)) == nil)
return -1;
linux2ureg386(l, u);
*up = (uchar*)u;
return sizeof(Ureg);
}
@ -93,3 +102,101 @@ corecmdlinux386(Elf *elf, ElfNote *note, char **pp)
return 0;
}
#define dprint if(0)print
void
elfcorelinux386(Fhdr *fp, Elf *elf, ElfNote *note)
{
int i;
Psinfo *ps;
Status *st;
Mach *m;
Ureg *u;
m = fp->mach;
dprint("%s ", note->name);
switch(note->type){
case ElfNotePrPsinfo:
ps = (Psinfo*)note->desc;
dprint("note info\n");
dprint("state=%d sname=%d zomb=%d nice=%d\n",
ps->state, ps->sname, ps->zomb, ps->nice);
dprint("flag=0x%ux uid=%ud gid=%ud pid=%ud ppid=%ud pgrp=%ud sid=%ud\n",
(uint)m->swap4(ps->flag),
(uint)m->swap2(ps->uid),
(uint)m->swap2(ps->gid),
(uint)m->swap4(ps->pid),
(uint)m->swap4(ps->ppid),
(uint)m->swap4(ps->pgrp),
(uint)m->swap4(ps->sid));
dprint("fname=%s psargs=%s\n", ps->fname, ps->psargs);
fp->pid = m->swap4(ps->pid);
if((fp->prog = strdup(ps->fname)) == nil)
fprint(2, "warning: out of memory saving core program name\n");
if((fp->cmdline = strdup(ps->psargs)) == nil)
fprint(2, "warning: out of memory saving core command line\n");
break;
case ElfNotePrTaskstruct:
dprint("note taskstruct\n");
break;
case ElfNotePrAuxv:
dprint("note auxv\n");
break;
case ElfNotePrStatus:
dprint("note status\n");
if(note->descsz < StatusSize){
dprint("too small\n");
break;
}
st = (Status*)note->desc;
dprint("sig=%ud code=%ud errno=%ud cursig=%ud sigpend=0x%ux sighold=0x%ux\n",
(uint)m->swap4(st->signo),
(uint)m->swap4(st->code),
(uint)m->swap4(st->errno),
(uint)m->swap4(st->cursig),
(uint)m->swap4(st->sigpend),
(uint)m->swap4(st->sighold));
dprint("pid=%ud ppid=%ud pgrp=%ud sid=%ud\n",
(uint)m->swap4(st->pid),
(uint)m->swap4(st->ppid),
(uint)m->swap4(st->pgrp),
(uint)m->swap4(st->sid));
dprint("utime=%ud.%06ud stime=%ud.%06ud cutime=%ud.%06ud cstime=%ud.%06ud\n",
(uint)m->swap4(st->utime[0]),
(uint)m->swap4(st->utime[1]),
(uint)m->swap4(st->stime[0]),
(uint)m->swap4(st->stime[1]),
(uint)m->swap4(st->cutime[0]),
(uint)m->swap4(st->cutime[1]),
(uint)m->swap4(st->cstime[0]),
(uint)m->swap4(st->cstime[1]));
dprint("fpvalid=%ud\n",
(uint)m->swap4(st->fpvalid));
if((fp->thread = realloc(fp->thread, (1+fp->nthread)*sizeof(fp->thread[0]))) == nil){
fprint(2, "warning: out of memory saving thread info\n");
return;
}
i = fp->nthread;
fp->thread[i].id = m->swap4(st->pid);
u = malloc(sizeof *u);
if(u == nil){
fprint(2, "warning: out of memory saving thread info\n");
return;
}
fp->thread[i].ureg = u;
linux2ureg386(&st->reg, u);
fp->nthread++;
break;
case ElfNotePrFpreg:
dprint("note fpreg\n");
/* XXX maybe record floating-point registers eventually */
break;
case ElfNotePrXfpreg:
dprint("note xfpreg\n");
/* XXX maybe record floating-point registers eventually */
break;
default:
dprint("note %d\n", note->type);
}
}