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LightningJit: Add a limit on the number of instructions per function for Arm64 (#6328)

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gdkchan 2024-02-17 17:30:54 -03:00 committed by GitHub
parent 103e7cb021
commit 42340fc743
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GPG key ID: B5690EEEBB952194
1 changed files with 5 additions and 3 deletions
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8
src/Ryujinx.Cpu/LightningJit/Arm64/Target/Arm64/Decoder.cs
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@ -8,7 +8,7 @@ namespace Ryujinx.Cpu.LightningJit.Arm64.Target.Arm64
{
static class Decoder
{
private const int MaxInstructionsPerBlock = 1000;
private const int MaxInstructionsPerFunction = 10000;
private const uint NzcvFlags = 0xfu << 28;
private const uint CFlag = 0x1u << 29;
@ -22,10 +22,11 @@ namespace Ryujinx.Cpu.LightningJit.Arm64.Target.Arm64
bool hasHostCall = false;
bool hasMemoryInstruction = false;
int totalInsts = 0;
while (true)
{
Block block = Decode(cpuPreset, memoryManager, address, ref useMask, ref hasHostCall, ref hasMemoryInstruction);
Block block = Decode(cpuPreset, memoryManager, address, ref totalInsts, ref useMask, ref hasHostCall, ref hasMemoryInstruction);
if (!block.IsTruncated && TryGetBranchTarget(block, out ulong targetAddress))
{
@ -230,6 +231,7 @@ namespace Ryujinx.Cpu.LightningJit.Arm64.Target.Arm64
CpuPreset cpuPreset,
IMemoryManager memoryManager,
ulong address,
ref int totalInsts,
ref RegisterMask useMask,
ref bool hasHostCall,
ref bool hasMemoryInstruction)
@ -272,7 +274,7 @@ namespace Ryujinx.Cpu.LightningJit.Arm64.Target.Arm64
uint tempGprUseMask = gprUseMask | instGprReadMask | instGprWriteMask;
if (CalculateAvailableTemps(tempGprUseMask) < CalculateRequiredGprTemps(tempGprUseMask) || insts.Count >= MaxInstructionsPerBlock)
if (CalculateAvailableTemps(tempGprUseMask) < CalculateRequiredGprTemps(tempGprUseMask) || totalInsts++ >= MaxInstructionsPerFunction)
{
isTruncated = true;
address -= 4UL;