uint32
paint2(Reg *r, int bn)
{
Reg *r1;
int z;
uint32 bb, vreg, x;
z = bn/32;
bb = 1L << (bn%32);
vreg = regbits;
if(!(r->act.b[z] & bb))
return vreg;
for(;;) {
if(!(r->refbehind.b[z] & bb))
break;
r1 = (Reg*)r->f.p1;
if(r1 == R)
break;
if(!(r1->refahead.b[z] & bb))
break;
if(!(r1->act.b[z] & bb))
break;
r = r1;
}
for(;;) {
r->act.b[z] &= ~bb;
vreg |= r->regu;
if(r->refbehind.b[z] & bb)
for(r1 = (Reg*)r->f.p2; r1 != R; r1 = (Reg*)r1->f.p2link)
if(r1->refahead.b[z] & bb)
vreg |= paint2(r1, bn);
if(!(r->refahead.b[z] & bb))
break;
r1 = (Reg*)r->f.s2;
if(r1 != R)
if(r1->refbehind.b[z] & bb)
vreg |= paint2(r1, bn);
r = (Reg*)r->f.s1;
if(r == R)
break;
if(!(r->act.b[z] & bb))
break;
if(!(r->refbehind.b[z] & bb))
break;
}
bb = vreg;
for(; r; r=(Reg*)r->f.s1) {
x = r->regu & ~bb;
if(x) {
vreg |= reguse(r, x);
bb |= regset(r, x);
}
}
return vreg;
}
//
// Process all register sets in the definition file.
//
static bool ProcessRegisterSets(Context &ctx, JSDictionary const *d) {
for (auto name : *d) {
if (ctx.RegisterSets.find(name) != ctx.RegisterSets.end()) {
fprintf(stderr, "error: register set '%s' is already defined\n",
name.c_str());
return false;
}
RegisterSet::shared_ptr regset(new RegisterSet);
if (!regset->parse(ctx, name, d->value<JSDictionary>(name)))
return false;
ctx.RegisterSets[name] = regset;
//
// Now merge the registers into the global registers map,
// we need to check that the register name is unique across
// all the register sets, this is due to avoid conflicts in
// the resulting C++ and Header files.
//
for (auto reg : *regset) {
if (reg->Private)
continue;
if (ctx.PublicRegisters.find(reg->Name) != ctx.PublicRegisters.end()) {
fprintf(stderr, "error: register '%s' in register set '%s' "
"is already defined\n",
reg->Name.c_str(), regset->name().c_str());
return false;
}
if (!reg->LLDBName.empty() &&
ctx.PublicRegisters.find(reg->LLDBName) !=
ctx.PublicRegisters.end()) {
fprintf(stderr, "error: register '%s' in register set '%s' "
"is already defined\n",
reg->LLDBName.c_str(), regset->name().c_str());
return false;
}
reg->Index = ctx.PublicRegisters.size();
ctx.PublicRegisters[reg->Name] = reg;
if (!reg->LLDBName.empty()) {
ctx.PublicRegisters[reg->LLDBName] = reg;
}
}
}
return true;
}
