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mono-jit

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- 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
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src/ARMeilleure/Translation/Cache/JitCache.cs
+6 -3
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@@ -129,8 +129,9 @@ namespace ARMeilleure.Translation.Cache
{
int endOffs = offset + size;
int regionStart = (offset % (int)CacheSize) & ~_pageMask;
int regionEnd = ((endOffs % (int)CacheSize) + _pageMask) & ~_pageMask;
int regionEnd = endOffs % (int)CacheSize == 0
? (((int)CacheSize) + _pageMask) & ~_pageMask
: ((endOffs % (int)CacheSize) + _pageMask) & ~_pageMask;
GetRegion(offset).Block.MapAsRwx((ulong)regionStart, (ulong)(regionEnd - regionStart));
}
@@ -138,7 +139,9 @@ namespace ARMeilleure.Translation.Cache
{
int endOffs = offset + size;
int regionStart = (offset % (int)CacheSize) & ~_pageMask;
int regionEnd = ((endOffs % (int)CacheSize) + _pageMask) & ~_pageMask;
int regionEnd = endOffs % (int)CacheSize == 0
? (((int)CacheSize) + _pageMask) & ~_pageMask
: ((endOffs % (int)CacheSize) + _pageMask) & ~_pageMask;
GetRegion(offset).Block.MapAsRx((ulong)regionStart, (ulong)(regionEnd - regionStart));
}