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#include <u.h>
#include <libc.h>
#include <mach.h>
Fhdr *symhdr;
Fhdr *corhdr;
char *symfil;
char *corfil;
int corpid;
Regs *correg;
Map *symmap;
Map *cormap;
static int
alldigs(char *s)
{
while(*s){
if(*s<'0' || '9'<*s)
return 0;
s++;
}
return 1;
}
/*
* attach to arguments in argc, argv
*/
int
attachargs(int argc, char **argv, int omode, int verbose)
{
int i;
Fhdr *hdr;
char *s, *t;
symhdr = nil;
corhdr = nil;
symfil = nil;
corfil = nil;
corpid = 0;
correg = nil;
for(i=0; i<argc; i++){
if(alldigs(argv[i])){
if(corpid){
fprint(2, "already have corpid %d; ignoring corpid %d\n", corpid, argv[i]);
continue;
}
if(corhdr){
fprint(2, "already have core %s; ignoring corpid %d\n", corfil, corpid);
continue;
}
corpid = atoi(argv[i]);
continue;
}
if((hdr = crackhdr(argv[i], omode)) == nil){
fprint(2, "crackhdr %s: %r\n", argv[i]);
continue;
}
if(verbose)
fprint(2, "%s: %s %s %s\n", argv[i], hdr->aname, hdr->mname, hdr->fname);
if(hdr->ftype == FCORE){
if(corpid){
fprint(2, "already have corpid %d; ignoring core %s\n", corpid, argv[i]);
uncrackhdr(hdr);
continue;
}
if(corhdr){
fprint(2, "already have core %s; ignoring core %s\n", corfil, argv[i]);
uncrackhdr(hdr);
continue;
}
corhdr = hdr;
corfil = argv[i];
}else{
if(symhdr){
fprint(2, "already have text %s; ignoring text %s\n", symfil, argv[i]);
uncrackhdr(hdr);
continue;
}
symhdr = hdr;
symfil = argv[i];
}
}
if(symhdr == nil){
symfil = "a.out"; /* default */
if(corpid){ /* try from corpid */
if((s = proctextfile(corpid)) != nil){
if(verbose)
fprint(2, "corpid %d: text %s\n", corpid, s);
symfil = s;
}
}
if(corhdr && corhdr->cmdline){ /* try from core */
/*
* prog gives only the basename of the command,
* so try the command line for a path.
*/
if((s = strdup(corhdr->cmdline)) != nil){
t = strchr(s, ' ');
if(t)
*t = 0;
if((t = searchpath(s)) != nil){
if(verbose)
fprint(2, "core: text %s\n", t);
symfil = t;
}
free(s);
}
}
if((symhdr = crackhdr(symfil, omode)) == nil){
fprint(2, "crackhdr %s: %r\n", symfil);
symfil = nil;
}
}
if(symhdr)
symopen(symhdr);
if(!mach)
mach = machcpu;
/*
* Set up maps
*/
symmap = allocmap();
cormap = allocmap();
if(symmap == nil || cormap == nil)
sysfatal("allocating maps: %r");
if(symhdr){
if(mapfile(symhdr, 0, symmap, nil) < 0)
fprint(2, "mapfile %s: %r\n", symfil);
mapfile(symhdr, 0, cormap, nil);
}
if(corpid)
attachproc(corpid);
if(corhdr)
attachcore(corhdr);
attachdynamic(verbose);
return 0;
}
static int thecorpid;
static Fhdr *thecorhdr;
static void
unattach(void)
{
unmapproc(cormap);
unmapfile(corhdr, cormap);
free(correg);
correg = nil;
thecorpid = 0;
thecorhdr = nil;
corpid = 0;
corhdr = nil;
corfil = nil;
}
int
attachproc(int pid)
{
unattach();
if(pid == 0)
return 0;
if(mapproc(pid, cormap, &correg) < 0){
fprint(2, "attachproc %d: %r\n", pid);
return -1;
}
thecorpid = pid;
corpid = pid;
return 0;
}
int
attachcore(Fhdr *hdr)
{
unattach();
if(hdr == nil)
return 0;
if(mapfile(hdr, 0, cormap, &correg) < 0){
fprint(2, "attachcore %s: %r\n", hdr->filename);
return -1;
}
thecorhdr = hdr;
corhdr = hdr;
corfil = hdr->filename;
return 0;
}
int
attachdynamic(int verbose)
{
extern void elfdl386mapdl(int);
if(mach && mach->type == M386 && symhdr && symhdr->elf)
elfdl386mapdl(verbose);
return 0;
}
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