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Optimization: Implement Return Stack Buffer

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This commit is contained in:
MerryMage
2016-08-13 00:10:23 +01:00
parent 8e68e6fdd9
commit 960d14d18e
18 changed files with 167 additions and 31 deletions
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10
src/frontend/translate/translate_arm/load_store.cpp
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@@ -44,7 +44,10 @@ bool ArmTranslatorVisitor::arm_LDR_imm(Cond cond, bool P, bool U, bool W, Reg n,
if (d == Reg::PC) {
ir.BXWritePC(data);
ir.SetTerm(IR::Term::ReturnToDispatch{});
if (!P && W && n == Reg::R13)
ir.SetTerm(IR::Term::PopRSBHint{});
else
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
@@ -413,7 +416,10 @@ static bool LDMHelper(IREmitter& ir, bool W, Reg n, RegList list, IR::Value star
}
if (Common::Bit<15>(list)) {
ir.LoadWritePC(ir.ReadMemory32(address));
ir.SetTerm(IR::Term::ReturnToDispatch{});
if (n == Reg::R13)
ir.SetTerm(IR::Term::PopRSBHint{});
else
ir.SetTerm(IR::Term::ReturnToDispatch{});
return false;
}
return true;