get rid of JIT and other things

2023-06-04 22:28:23 +02:00
parent 1ed2506523
commit 30fce7ecf7
36 changed files with 143 additions and 3602 deletions
--- a/src/backend/core/JIT.cpp
+++ b/src/backend/core/JIT.cpp
@@ -1,133 +0,0 @@
-#include <Registers.hpp>
-#include <filesystem>
-#include <JIT.hpp>
-
-namespace n64 {
-namespace fs = std::filesystem;
-
-JIT::~JIT() {
-  Util::aligned_free(codeCache);
-  dump.close();
-}
-
-JIT::JIT() : code(CODECACHE_SIZE, codeCache) {
-  codeCache = (u8*)Util::aligned_alloc(4096, CODECACHE_SIZE);
-  CodeArray::protect(
-    codeCache,
-    CODECACHE_SIZE,
-    CodeArray::PROTECT_RWE
-  );
-
-  if(fs::exists("jit.dump")) {
-    fs::remove("jit.dump");
-  }
-
-  dump.open("jit.dump", std::ios::ate | std::ios::binary);
-  dump.unsetf(std::ios::skipws);
-  regs.Reset();
-}
-
-inline bool ShouldServiceInterrupt(Registers& regs) {
-  bool interrupts_pending = (regs.cop0.status.im & regs.cop0.cause.interruptPending) != 0;
-  bool interrupts_enabled = regs.cop0.status.ie == 1;
-  bool currently_handling_exception = regs.cop0.status.exl == 1;
-  bool currently_handling_error = regs.cop0.status.erl == 1;
-
-  return interrupts_pending && interrupts_enabled &&
-         !currently_handling_exception && !currently_handling_error;
-}
-
-inline void CheckCompareInterrupt(MI& mi, Registers& regs) {
-  regs.cop0.count++;
-  regs.cop0.count &= 0x1FFFFFFFF;
-  if(regs.cop0.count == (u64)regs.cop0.compare << 1) {
-    regs.cop0.cause.ip7 = 1;
-    UpdateInterrupt(mi, regs);
-  }
-}
-
-void JIT::Recompile(Mem& mem, u32 pc) {
-  bool branch = false, prevBranch = false;
-  u32 startPC = pc;
-  u32 loopPC = pc;
-  Fn block = code.getCurr<Fn>();
-
-  if(code.getSize() >= CODECACHE_OVERHEAD) {
-    Util::debug("Code cache overflow!\n");
-    code.setSize(0);
-    InvalidateCache();
-  }
-
-  code.sub(rsp, 8);
-
-  while(!prevBranch) {
-    instrInBlock++;
-    prevBranch = branch;
-    u32 instr = mem.Read32(regs, loopPC);
-    loopPC += 4;
-
-    code.mov(rdi, (uintptr_t)this);
-    code.mov(qword[rdi + GPR_OFFSET(0, this)], 0);
-    code.mov(r8, qword[rdi + REG_OFFSET(oldPC, this)]);
-    code.mov(r9, qword[rdi + REG_OFFSET(pc, this)]);
-    code.mov(r10, qword[rdi + REG_OFFSET(nextPC, this)]);
-    code.mov(r8, r9);
-    code.mov(r9, r10);
-    code.add(r10, 4);
-    code.mov(qword[rdi + REG_OFFSET(oldPC, this)], r8);
-    code.mov(qword[rdi + REG_OFFSET(pc, this)], r9);
-    code.mov( qword[rdi + REG_OFFSET(nextPC, this)], r10);
-
-    code.mov(esi, instr);
-    branch = Exec(mem, instr);
-  }
-
-  code.add(rsp, 8);
-  code.ret();
-  dump.write(code.getCode<char*>(), code.getSize());
-
-  blockCache[startPC >> 20][startPC & 0xFFF] = block;
-}
-
-void JIT::AllocateOuter(u32 pc) {
-  blockCache[pc >> 20] = (Fn*)bumpAlloc(0x1000 * sizeof(Fn));
-}
-
-int JIT::Run() {
-  instrInBlock = 0;
-  regs.prevDelaySlot = regs.delaySlot;
-  regs.delaySlot = false;
-
-  u32 pc{};
-
-  if(!MapVAddr(regs, LOAD, regs.pc, pc)) {
-    HandleTLBException(regs, regs.pc);
-    FireException(regs, GetTLBExceptionCode(regs.cop0.tlbError, LOAD), 0, false);
-    return 0;
-  }
-
-  if(!blockCache[pc >> 20]) {
-    AllocateOuter(pc);
-  }
-
-  if(!blockCache[pc >> 20][pc & 0xfff]) {
-    Recompile(mem, pc);
-  }
-
-  CheckCompareInterrupt(mem.mmio.mi, regs);
-  if(ShouldServiceInterrupt(regs)) {
-    FireException(regs, ExceptionCode::Interrupt, 0, false);
-    return 0;
-  }
-
-  blockCache[pc >> 20][pc & 0xfff]();
-
-  return instrInBlock;
-}
-
-void JIT::Reset() {
-  code.reset();
-  regs.Reset();
-  InvalidateCache();
-}
-}