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T32: Implement B, B.cond, BL, BLX (#3155)

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* Decoders: Make IsThumb a function of OpCode32

* OpCode32: Fix GetPc

* T32: Implement B, B.cond, BL, BLX

* rm usings
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merry 2022-03-04 22:05:08 +00:00 • committed by GitHub
parent ac21abbb9d
commit bd9ac0fdaa
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8 changed files with 253 additions and 9 deletions
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167
Ryujinx.Tests/Cpu/CpuTestT32Flow.cs Normal file
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using ARMeilleure.State;
using NUnit.Framework;
namespace Ryujinx.Tests.Cpu
{
[Category("T32Flow")]
public sealed class CpuTestT32Flow : CpuTest32
{
[Test]
public void TestT32B1()
{
// BNE label
ThumbOpcode(0xf040);
ThumbOpcode(0x8240);
for (int i = 0; i < 576; i++)
{
ThumbOpcode(0xe7fe);
}
// label: BX LR
ThumbOpcode(0x4770);
GetContext().SetPstateFlag(PState.TFlag, true);
ExecuteOpcodes(runUnicorn: false);
}
[Test]
public void TestT32B2()
{
// BNE label1
ThumbOpcode(0xf040);
ThumbOpcode(0x8242);
// label2: BNE label3
ThumbOpcode(0xf040);
ThumbOpcode(0x8242);
for (int i = 0; i < 576; i++)
{
ThumbOpcode(0xe7fe);
}
// label1: BNE label2
ThumbOpcode(0xf47f);
ThumbOpcode(0xadbc);
// label3: BX LR
ThumbOpcode(0x4770);
GetContext().SetPstateFlag(PState.TFlag, true);
ExecuteOpcodes(runUnicorn: false);
}
[Test]
public void TestT32B3()
{
// B.W label
ThumbOpcode(0xf000);
ThumbOpcode(0xba40);
for (int i = 0; i < 576; i++)
{
ThumbOpcode(0xe7fe);
}
// label: BX LR
ThumbOpcode(0x4770);
GetContext().SetPstateFlag(PState.TFlag, true);
ExecuteOpcodes(runUnicorn: false);
}
[Test]
public void TestT32B4()
{
// B.W label1
ThumbOpcode(0xf000);
ThumbOpcode(0xba42);
// label2: B.W label3
ThumbOpcode(0xf000);
ThumbOpcode(0xba42);
for (int i = 0; i < 576; i++)
{
ThumbOpcode(0xe7fe);
}
// label1: B.W label2
ThumbOpcode(0xf7ff);
ThumbOpcode(0xbdbc);
// label3: BX LR
ThumbOpcode(0x4770);
GetContext().SetPstateFlag(PState.TFlag, true);
ExecuteOpcodes(runUnicorn: false);
}
[Test]
public void TestT32Bl()
{
// BL label
ThumbOpcode(0xf000);
ThumbOpcode(0xf840);
for (int i = 0; i < 64; i++)
{
ThumbOpcode(0xe7fe);
}
ThumbOpcode(0x4670); // label: MOV R0, LR
ThumbOpcode(0x2100); // MOVS R1, #0
ThumbOpcode(0x468e); // MOV LR, R1
ThumbOpcode(0x4770); // BX LR
GetContext().SetPstateFlag(PState.TFlag, true);
ExecuteOpcodes(runUnicorn: false);
Assert.That(GetContext().GetX(0), Is.EqualTo(0x1005));
}
[Test]
public void TestT32Blx1()
{
// BLX label
ThumbOpcode(0xf000);
ThumbOpcode(0xe840);
for (int i = 0; i < 64; i++)
{
ThumbOpcode(0x4770);
}
// .arm ; label: MOV R0, LR
Opcode(0xe1a0000e);
// MOV LR, #0
Opcode(0xe3a0e000);
// BX LR
Opcode(0xe12fff1e);
GetContext().SetPstateFlag(PState.TFlag, true);
ExecuteOpcodes(runUnicorn: false);
Assert.That(GetContext().GetX(0), Is.EqualTo(0x1005));
Assert.That(GetContext().GetPstateFlag(PState.TFlag), Is.EqualTo(false));
}
[Test]
public void TestT32Blx2()
{
// NOP
ThumbOpcode(0xbf00);
// BLX label
ThumbOpcode(0xf000);
ThumbOpcode(0xe840);
for (int i = 0; i < 63; i++)
{
ThumbOpcode(0x4770);
}
// .arm ; label: MOV R0, LR
Opcode(0xe1a0000e);
// MOV LR, #0
Opcode(0xe3a0e000);
// BX LR
Opcode(0xe12fff1e);
GetContext().SetPstateFlag(PState.TFlag, true);
ExecuteOpcodes(runUnicorn: false);
Assert.That(GetContext().GetX(0), Is.EqualTo(0x1007));
Assert.That(GetContext().GetPstateFlag(PState.TFlag), Is.EqualTo(false));
}
}
}