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UserspaceEmulator: Devirtualize read/write/execute region permissions

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These are getting quite hot (~4% of general emulation profile combined)
so let's just devirtualize them and turn the function calls into simple
boolean checks.
This commit is contained in:
Andreas Kling 2020-11-16 09:44:30 +01:00
parent f41b9946e2
commit 3c64cec4d7
3 changed files with 17 additions and 10 deletions
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2
DevTools/UserspaceEmulator/MmapRegion.cpp
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@ -50,8 +50,8 @@ NonnullOwnPtr<MmapRegion> MmapRegion::create_file_backed(u32 base, u32 size, u32
MmapRegion::MmapRegion(u32 base, u32 size, int prot)
: Region(base, size)
, m_prot(prot)
{
set_prot(prot);
m_shadow_data = (u8*)malloc(size);
memset(m_shadow_data, 1, size);
}