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CPU: Fix PC alignment for ADR thumb instruction (#6613)

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* Fix PC alignment for ADR thumb instruction

* PPTC version bump
This commit is contained in:
gdkchan 2024-04-07 18:17:49 -03:00 committed by GitHub
parent ead9a25141
commit 808803d97a
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GPG key ID: B5690EEEBB952194
2 changed files with 13 additions and 1 deletions
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12
src/ARMeilleure/Instructions/InstEmitAlu32.cs
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@ -19,6 +19,12 @@ namespace ARMeilleure.Instructions
Operand n = GetAluN(context); Operand n = GetAluN(context);
Operand m = GetAluM(context, setCarry: false); Operand m = GetAluM(context, setCarry: false);
if (op.Rn == RegisterAlias.Aarch32Pc && op is OpCodeT32AluImm12)
{
// For ADR, PC is always 4 bytes aligned, even in Thumb mode.
n = context.BitwiseAnd(n, Const(~3u));
}
Operand res = context.Add(n, m); Operand res = context.Add(n, m);
if (ShouldSetFlags(context)) if (ShouldSetFlags(context))
@ -467,6 +473,12 @@ namespace ARMeilleure.Instructions
Operand n = GetAluN(context); Operand n = GetAluN(context);
Operand m = GetAluM(context, setCarry: false); Operand m = GetAluM(context, setCarry: false);
if (op.Rn == RegisterAlias.Aarch32Pc && op is OpCodeT32AluImm12)
{
// For ADR, PC is always 4 bytes aligned, even in Thumb mode.
n = context.BitwiseAnd(n, Const(~3u));
}
Operand res = context.Subtract(n, m); Operand res = context.Subtract(n, m);
if (ShouldSetFlags(context)) if (ShouldSetFlags(context))

2
src/ARMeilleure/Translation/PTC/Ptc.cs
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@ -29,7 +29,7 @@ namespace ARMeilleure.Translation.PTC
private const string OuterHeaderMagicString = "PTCohd\0\0"; private const string OuterHeaderMagicString = "PTCohd\0\0";
private const string InnerHeaderMagicString = "PTCihd\0\0"; private const string InnerHeaderMagicString = "PTCihd\0\0";
private const uint InternalVersion = 5518; //! To be incremented manually for each change to the ARMeilleure project. private const uint InternalVersion = 6613; //! To be incremented manually for each change to the ARMeilleure project.
private const string ActualDir = "0"; private const string ActualDir = "0";
private const string BackupDir = "1"; private const string BackupDir = "1";