C++ (Cpp) PPCEmuAssembler::bind Examples

Example #1

File: jit_integer.cpp Project: archshift/decaf-emu

// Count Leading Zeroes Word
static bool
cntlzw(PPCEmuAssembler& a, Instruction instr)
{
   asmjit::Label lblZero(a);

   a.mov(a.ecx, a.ppcgpr[instr.rS]);
   a.mov(a.eax, 32);

   a.cmp(a.ecx, 0);
   a.je(lblZero);

   a.mov(a.edx, 0);
   a.bsr(a.edx, a.ecx);

   a.dec(a.eax);
   a.sub(a.eax, a.edx);

   a.bind(lblZero);
   a.mov(a.ppcgpr[instr.rA], a.eax);

   if (instr.rc) {
      updateConditionRegister(a, a.eax, a.ecx, a.edx);
   }

   return true;
}

Example #2

File: jit_system.cpp Project: achurch/decaf-emu

// Kernel call
static bool
kc(PPCEmuAssembler& a, Instruction instr)
{
   auto id = instr.kcn;
   auto kc = cpu::getKernelCall(id);
   decaf_assert(kc, fmt::format("Encountered invalid Kernel Call ID {}", id));

   // Evict all stored register as a KC might read or modify them.
   a.evictAll();

   // Save NIA back to memory in case KC reads/writes it
   a.mov(a.niaMem, a.genCia + 4);

   // Call the KC
   a.mov(a.sysArgReg[0], asmjit::Ptr(kc->func));
   a.mov(a.sysArgReg[1], asmjit::Ptr(kc->user_data));
   a.call(asmjit::Ptr(&kc_stub));
   a.mov(a.stateReg, asmjit::x86::rax);

   // Check if the KC adjusted nia.  If it has, we need to return
   //  to the dispatcher.  Note that we assume the cache was already
   //  cleared before this instruction since KC requires that anyways.
   auto niaUnchangedLbl = a.newLabel();

   a.cmp(a.niaMem, a.genCia + 4);
   a.je(niaUnchangedLbl);

   a.mov(a.finaleNiaArgReg, a.niaMem);
   a.mov(a.finaleJmpSrcArgReg, 0);
   a.jmp(asmjit::Ptr(gFinaleFn));

   a.bind(niaUnchangedLbl);

   return true;
}