static void
eppic_prtarray(type_t*t, ull mem, int level, int idx)
{
int i;
int j, size=1;
for(j=idx+1; t->idxlst[j]; j++) size *= t->idxlst[j];
size *= t->type==V_REF ? eppic_defbsize() : t->size;
/* start printing */
eppic_msg("{");
eppic_msg("\n");
eppic_indent(level+1, 1);
for(i=0; i<t->idxlst[idx]; i++, mem += size) {
if(t->idxlst[idx+1]) {
eppic_msg("[%d] = ", i);
eppic_prtarray(t, mem, level+1, idx+1);
} else {
/* time to deref and print final type */
value_t *v=eppic_newval(), *vr=eppic_newval();
int *pi=t->idxlst;
t->idxlst=0;
eppic_duptype(&vr->type, t);
eppic_pushref(&vr->type, 1);
if(eppic_defbsize()==8) vr->v.ull=mem;
else vr->v.ul=(ul)mem;
eppic_do_deref(1, v, vr);
if(is_ctype(v->type.type) || !(i%NBUNDLE)) eppic_msg("[%2d] ", i);
eppic_ptype2(&v->type, v, level+1, 0, 0, 0, 1);
eppic_msg(", ");
/* anything else then struct/unions, print in buddles */
if(!is_ctype(v->type.type) && !((i+1)%NBUNDLE)) {
eppic_msg("\n");
eppic_indent(level+1, 1);
}
eppic_freeval(v);
eppic_freeval(vr);
t->idxlst=pi;
}
}
eppic_msg("\n");
eppic_indent(level, 1);
eppic_msg("}");
}
static value_t *
eppic_exeadrof(adrof *a)
{
value_t *rv, *v=NODE_EXE(a->expr);
#if 0
/* we can only do this op on something that came from system image
Must not allow creation of references to local variable */
if(!v->mem) {
eppic_freeval(v);
eppic_rerror(&a->pos, "Invalid operand to '&' operator");
}
#endif
/* create the reference */
rv=eppic_newval();
eppic_duptype(&rv->type, &v->type);
eppic_pushref(&rv->type, 1);
/* remmember position in image */
if(eppic_defbsize()==8) rv->v.ull=v->mem;
else rv->v.ul=v->mem;
rv->mem=0;
eppic_freeval(v);
return rv;
}
/* scan the current array for a specific index and return value_t
XXX should use some hashing tables here for speed and scalability */
array_t*
eppic_getarrval(array_t**app, value_t *idx)
{
array_t*ap, *apr;
/* eppic_setarray(app); AAA comment out */
apr=*app;
for(ap=apr->next; ap != apr; ap=ap->next) {
if(ap->idx->type.type == idx->type.type) {
int b=0;
switch(idx->type.type) {
case V_STRING: b=(!strcmp(ap->idx->v.data, idx->v.data));
break;
case V_BASE: b=(unival(ap->idx)==unival(idx));
break;
case V_REF:
if(eppic_defbsize()==4)
b=(ap->idx->v.ul==idx->v.ul);
else
b=(ap->idx->v.ull==idx->v.ull);
break;
default:
eppic_error("Invalid index type %d", idx->type.type);
}
if(b) {
return ap;
}
}
}
/* we have not found this index, create one */
ap=(array_t*)eppic_calloc(sizeof(array_t));
ap->idx=eppic_makebtype(0);
eppic_dupval(ap->idx, idx);
/* just give it a int value_t of 0 for now */
ap->val=eppic_makebtype(0);
/* we must set the same refenrence number as the
upper level array_t*/
ap->val->arr->ref=apr->ref;
/* link it in */
ap->prev=apr->prev;
ap->next=apr;
apr->prev->next=ap;
apr->prev=ap;
ap->ref=0;
return ap;
}
static int
eppic_reftobase(value_t *v)
{
int idx= v->type.idx;
if(v->type.type==V_REF) {
if(eppic_defbsize()==4)
v->type.idx=B_UL;
else
v->type.idx=B_ULL;
}
return idx;
}
static int
eppic_prtstr(value_t *v, int justv)
{
value_t *vs;
char *s, *p;
if(eppic_defbsize()==8) v->v.ull=v->mem;
else v->v.ul=v->mem;
vs=eppic_getstr(v);
s=eppic_getptr(vs, char);
for(p=s; *p; p++) if(!isprint(*p)) return 0;
if(p==s) { eppic_freeval(vs); return 0; }
if(!justv) eppic_msg("= ");
eppic_msg("\"%s\"", s);
eppic_freeval(vs);
return 1;
}
/*
* This function is a copy of eppic_setupidx() function in
* applications/crash/eppic.c file from eppic source code
* repository.
*
* set idx value to actual array indexes from specified size
*/
static void
eppic_setupidx(TYPE_S *t, int ref, int nidx, int *idxlst)
{
/* put the idxlst in index size format */
if (nidx) {
int i;
for (i = 0; i < nidx - 1; i++) {
/* kludge for array dimensions of [1] */
if (idxlst[i + 1] == 0)
idxlst[i + 1] = 1;
idxlst[i] = idxlst[i] / idxlst[i + 1];
}
/* divide by element size for last element bound */
if (ref)
idxlst[i] /= eppic_defbsize();
else
idxlst[i] /= eppic_type_getsize(t);
eppic_type_setidxlst(t, idxlst);
}
}
ul
eppic_bool(value_t *v)
{
switch(v->type.type) {
case V_BASE:
switch(v->type.size) {
case 1: return !(!(v->v.uc));
case 2: return !(!(v->v.us));
case 4: return !(!(v->v.ul));
case 8: return !(!(v->v.ull));
default: eppic_error("Oops eppic_bool()[%d]", v->type.size); break;
}
case V_STRING : return !(!(*((char*)(v->v.data))));
case V_REF: return eppic_defbsize()==8?(!(!(v->v.ull))):(!(!(v->v.ul)));
default :
eppic_error("Invalid operand for boolean expression");
return 0;
}
}
/*
called by the 'var in array' bool expression.
*/
int
eppic_lookuparray(node_t*vnode, node_t*arrnode)
{
value_t *varr=NODE_EXE(arrnode);
array_t*ap, *apr=varr->arr;
value_t *val;
int b=0;
val=NODE_EXE(vnode);
if(apr) {
for(ap=apr->next; ap != apr; ap=ap->next) {
if(VAL_TYPE(ap->idx) == VAL_TYPE(val)) {
switch(VAL_TYPE(val)) {
case V_STRING: b=(!strcmp(ap->idx->v.data, val->v.data)); break;
case V_BASE: b=(unival(ap->idx)==unival(val)); break;
case V_REF:
if(eppic_defbsize()==4)
b=(ap->idx->v.ul==val->v.ul);
else
b=(ap->idx->v.ull==val->v.ull);
break;
default:
eppic_rerror(&vnode->pos, "Invalid indexing type %d", VAL_TYPE(val));
}
if(b) break;
}
}
}
eppic_freeval(val);
eppic_freeval(varr);
return b;
}
void
eppic_do_deref(int n, value_t *v, value_t *ref)
{
ull madr, new_madr;
if(n > ref->type.ref) {
eppic_error("Too many levels of dereference");
}else {
if(eppic_defbsize()==4) madr=(ull)ref->v.ul;
else madr=ref->v.ull;
/* copy the target type to the returned value_t's type_t*/
eppic_duptype(&v->type, &ref->type);
/* do a number of deferences according to PTR value_t */
while(n--) {
eppic_popref(&v->type, 1);
if(!v->type.ref) {
/* make sure the pointer is pointing into the vmcore */
if(is_ctype(v->type.type)) {
v->v.data=eppic_alloc(v->type.size);
eppic_getmem(madr, v->v.data, v->type.size);
} else {
/* get the data from the system image */
switch(TYPE_SIZE(&v->type)) {
case 1: eppic_getmem(madr, &v->v.uc, 1);
break;
case 2: eppic_getmem(madr, &v->v.us, 2);
break;
case 4: eppic_getmem(madr, &v->v.ul, 4);
break;
case 8: eppic_getmem(madr, &v->v.ull, 8);
break;
}
}
}
else {
/* get the pointer at this address */
if(eppic_defbsize()==4) {
eppic_getmem(madr, &v->v.ul, 4);
new_madr=v->v.ul;
} else {
eppic_getmem(madr, &v->v.ull, 8);
new_madr=v->v.ull;
}
}
/* remember this address. For the '&' operator */
v->mem=madr;
madr=new_madr;
}
}
/* we can always assign to a reference */
v->set=1;
v->setval=v;
v->setfct=eppic_setderef;
}
static value_t *
eppic_exeindex(index_t *i)
{
value_t *var;
value_t *vi=NODE_EXE(i->index);
value_t *v;
srcpos_t p;
eppic_curpos(&i->pos, &p);
/* we need to make believe it's been initiazed */
eppic_setini(i->var);
var=NODE_EXE(i->var);
/* check the type of the variable */
/* if it's a pointer then index through the image */
if(var->type.type==V_REF) {
int size;
int n=eppic_getval(vi);
value_t *ref;
/* if this is an array and we're not at the rightmost index */
if(var->type.idxlst && var->type.idxlst[1]) {
int i, size=var->type.size;
v=eppic_cloneval(var);
v->type.idxlst[0]=0;
for(i=1; var->type.idxlst[i]; i++) {
size *= var->type.idxlst[i];
v->type.idxlst[i]=var->type.idxlst[i+1];
}
if(eppic_defbsize()==4) {
v->v.ul+=size*n;
v->mem=v->v.ul;
} else {
v->v.ull+=size*n;
v->mem=v->v.ull;
}
} else {
v=eppic_newval();
ref=eppic_cloneval(var);
if(var->type.ref==1) size=var->type.size;
else size=eppic_defbsize();
if(eppic_defbsize()==4) {
ref->v.ul+=size*n;
ref->mem=ref->v.ul;
} else {
ref->v.ull+=size*n;
ref->mem=ref->v.ull;
}
eppic_do_deref(1, v, ref);
eppic_freeval(ref);
}
} else {
v=eppic_newval();
/* use dynamic indexing aka awk indexing */
eppic_valindex(var, vi, v);
}
/* discard expression results */
eppic_freeval(var);
eppic_freeval(vi);
eppic_curpos(&p, 0);
return v;
}
/*
Print a type.
Typical output of the 'whatis' command.
*/
static
void eppic_ptype2(type_t*t, value_t*v, int level, int indent, char *name, int ref, int justv)
{
int type=t->type;
eppic_indent(level, indent);
switch(type) {
case V_STRUCT: case V_UNION:
/* make sure we have all the member info */
eppic_print_ctype(t, v, level, 0, name, ref, justv);
break;
case V_TYPEDEF:
/* no typedef should get here */
eppic_warning("Typedef in print!");
break;
case V_ENUM:
/* no enum should get here */
eppic_warning("ENUM in print!");
break;
case V_REF:
{
int refi=t->ref, ref=refi;
/* decrement ref if this was declared as a array */
if(t->idxlst) ref--;
/* print the referenced type */
eppic_popref(t, t->ref);
eppic_ptype2(t, 0, level, 0, 0, 1, justv);
eppic_pushref(t, refi);
if(!justv) {
char buf[100], buf2[100];
int pos=0, len=sizeof(buf);
buf[0]='\0';
if(t->fct) buf[pos++]='(';
if(pos < len)
pos += snprintf(buf+pos, len-pos, "%s%s", eppic_getref(ref), name?name:"");
if(pos < len)
pos += snprintf(buf+pos, len-pos, "%s", eppic_getidx(t, buf2, sizeof(buf2)));
if(pos < len && t->fct)
pos += snprintf(buf+pos, len-pos, "%s", ")()");
eppic_msg("%*s ", NAMESPACE, buf);
}
/* arrays are ref with boundaries... */
if(t->idxlst && v) {
if(t->idxlst[1] || t->rtype!=V_BASE || t->size!=1 || !eppic_prtstr(v, justv))
{
if(!justv) eppic_msg("= ");
eppic_popref(t, 1);
eppic_prtarray(t, v->mem, level, 0);
eppic_pushref(t, 1);
}
} else if(v) {
if(!justv) eppic_msg("= ");
if(!eppic_getval(v)) eppic_msg("(nil)");
else {
if(eppic_defbsize()==8) eppic_msg("0x%016llx", eppic_getval(v));
else eppic_msg("0x%08x", eppic_getval(v));
}
if(t->ref==1 && t->rtype==V_BASE && t->size==1) {
(void)eppic_prtstr(v, justv);
}
}
}
break;
case V_BASE:
{
if(eppic_isenum(t->typattr)) {
stinfo_t *st=eppic_getstbyindex(t->rtype, V_ENUM);
if(!justv) {
char buf[200];
snprintf(buf, sizeof(buf), "enum %s", st->name?st->name:"");
eppic_msg("%-*s ", SPACER, buf);
eppic_msg("%*s ", NAMESPACE, (name&&v)?name:"");
}
if(v) {
enum_t *e=st->enums;
eppic_msg("= ");
eppic_prbval(v);
while(e) {
if(e->value==eppic_getval(v)) {
eppic_msg(" [%s]", e->name);
break;
}
e=e->next;
}
if(!e) eppic_msg(" [???]");
}else{
enum_t *e=st->enums;
int count=0;
eppic_msg(" {");
while(e) {
if(!(count%4)) {
eppic_msg("\n");
eppic_indent(level+1, 1);
}
count ++;
eppic_msg("%s = %d, ", e->name, e->value);
e=e->next;
}
eppic_msg("\n");
eppic_indent(level, 1);
eppic_msg("%-*s ", SPACER, "}");
if(ref) return;
eppic_msg("%*s ", NAMESPACE, name?name:"");
}
} else {
if(!justv) {
eppic_msg("%-*s " , SPACER , eppic_getbtypename(t->typattr));
if(ref) return;
eppic_msg("%s%*s ", eppic_getref(t->ref), NAMESPACE, name?name:"");
}
if(v) {
if(!justv) eppic_msg("= ");
eppic_prbval(v);
}
}
}
break;
case V_STRING:
if(!justv) {
eppic_msg("%-*s " , SPACER , "string");
eppic_msg("%*s ", NAMESPACE, name?name:"");
}
if(v) {
if(!justv) eppic_msg("= ");
eppic_msg("\"%s\"", v->v.data);
}
break;
}
if(indent) eppic_msg("\n");
}