-
-void PPCJITInfo::resolveBBRefs(MachineCodeEmitter &MCE) {
- // Resolve branches to BasicBlocks for the entire function
- for (unsigned i = 0, e = BBRefs.size(); i != e; ++i) {
- intptr_t Location = MCE.getMachineBasicBlockAddress(BBRefs[i].first);
- unsigned *Ref = (unsigned *)BBRefs[i].second;
- DEBUG(std::cerr << "Fixup @ " << (void*)Ref << " to " << (void*)Location
- << "\n");
- unsigned Instr = *Ref;
- intptr_t BranchTargetDisp = (Location - (intptr_t)Ref) >> 2;
-
- switch (Instr >> 26) {
- default: assert(0 && "Unknown branch user!");
- case 18: // This is B or BL
- *Ref |= (BranchTargetDisp & ((1 << 24)-1)) << 2;
- break;
- case 16: // This is BLT,BLE,BEQ,BGE,BGT,BNE, or other bcx instruction
- *Ref |= (BranchTargetDisp & ((1 << 14)-1)) << 2;
- break;
- }
- }
- BBRefs.clear();
-}