- fix alignment issue with jitcache that could cause a crash.
- Reimplement sparse-jit to only use 1 layer.
    - the old 2 layer approach basically only ever used 1 path due to the bottom-layer size, so doing a double look-up seemed wasteful.
    - changed memory block allocation stategy to allocate based on requested code range instead of the possible address-space.

Co-authored-by: LotP1 <68976644+LotP1@users.noreply.github.com>
This commit is contained in:
LotP
2026-07-10 10:03:48 -05:00
committed by KeatonTheBot
co-authored by LotP1
parent b362f837c5
commit 6c47892b94
8 changed files with 89 additions and 97 deletions
@@ -3,6 +3,7 @@ using Ryujinx.Cpu.LightningJit.CodeGen;
using Ryujinx.Cpu.LightningJit.CodeGen.Arm64;
using System;
using System.Diagnostics;
using System.Linq;
using System.Numerics;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;
@@ -354,7 +355,7 @@ namespace Ryujinx.Cpu.LightningJit.Arm64.Target.Arm64
}
else if (inlineLookup)
{
// Inline table lookup. Only enabled when the sparse function table is enabled with 2 levels.
// Inline table lookup. Only enabled when the sparse function table is enabled with 1 level.
Operand indexReg = Register(NextFreeRegister(tempRegister + 1, tempGuestAddress));
@@ -368,18 +369,15 @@ namespace Ryujinx.Cpu.LightningJit.Arm64.Target.Arm64
// Index into the table.
asm.Mov(rn, tableBase);
for (int i = 0; i < funcTable.Levels.Length; i++)
{
AddressTableLevel level = funcTable.Levels[i];
asm.Ubfx(indexReg, guestAddress, level.Index, level.Length);
asm.Lsl(indexReg, indexReg, Const(3));
AddressTableLevel level = funcTable.Levels.Last();
asm.Ubfx(indexReg, guestAddress, level.Index, level.Length);
asm.Lsl(indexReg, indexReg, Const(3));
// Index into the page.
asm.Add(rn, rn, indexReg);
// Index into the page.
asm.Add(rn, rn, indexReg);
// Load the page address.
asm.LdrRiUn(rn, rn, 0);
}
// Load the page address.
asm.LdrRiUn(rn, rn, 0);
if (tempGuestAddress != -1)
{