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113 lines
4.6 KiB
C++
113 lines
4.6 KiB
C++
#include "StallTest.h"
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#include "VuAssembler.h"
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void CStallTest::Execute(CTestVm& virtualMachine)
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{
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virtualMachine.Reset();
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auto microMem = reinterpret_cast<uint32*>(virtualMachine.m_microMem);
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//Inspired by Rogue Galaxy - Looks like a FMAC stall with an impact, but not really
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CVuAssembler assembler(microMem);
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//pipeTime = 0
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assembler.Write(
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CVuAssembler::Upper::MULAbc(CVuAssembler::DEST_XYZW, CVuAssembler::VF1, CVuAssembler::VF10, CVuAssembler::BC_X),
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CVuAssembler::Lower::DIV(CVuAssembler::VF0, CVuAssembler::FVF_W, CVuAssembler::VF9, CVuAssembler::FVF_W));
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//pipeTime = 1
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assembler.Write(
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CVuAssembler::Upper::MADDAbc(CVuAssembler::DEST_XYZW, CVuAssembler::VF2, CVuAssembler::VF10, CVuAssembler::BC_Y),
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CVuAssembler::Lower::NOP());
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//pipeTime = 2
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assembler.Write(
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CVuAssembler::Upper::MADDAbc(CVuAssembler::DEST_XYZW, CVuAssembler::VF3, CVuAssembler::VF10, CVuAssembler::BC_Z),
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CVuAssembler::Lower::NOP());
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//pipeTime = 3
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//Writing to VF10xyzw, result will be available at pipeTime 7
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assembler.Write(
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CVuAssembler::Upper::MADDbc(CVuAssembler::DEST_XYZW, CVuAssembler::VF10, CVuAssembler::VF5, CVuAssembler::VF10, CVuAssembler::BC_W),
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CVuAssembler::Lower::NOP());
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//pipeTime = 4, 5, 6, 7
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//The DIV here will wait for the result to be written to VF10 (by previous instruction), causing a FMAC stall
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//But it won't disrupt the execution, we will get 3 different values in the 3 MULq instructions below
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assembler.Write(
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CVuAssembler::Upper::MULAbc(CVuAssembler::DEST_XYZW, CVuAssembler::VF1, CVuAssembler::VF11, CVuAssembler::BC_X),
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CVuAssembler::Lower::DIV(CVuAssembler::VF0, CVuAssembler::FVF_W, CVuAssembler::VF10, CVuAssembler::FVF_W));
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//pipeTime = 8
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assembler.Write(
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CVuAssembler::Upper::MADDAbc(CVuAssembler::DEST_XYZW, CVuAssembler::VF2, CVuAssembler::VF11, CVuAssembler::BC_Y),
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CVuAssembler::Lower::NOP());
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//pipeTime = 9
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assembler.Write(
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CVuAssembler::Upper::MADDAbc(CVuAssembler::DEST_XYZW, CVuAssembler::VF3, CVuAssembler::VF11, CVuAssembler::BC_Z),
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CVuAssembler::Lower::NOP());
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//pipeTime = 10
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assembler.Write(
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CVuAssembler::Upper::MADDbc(CVuAssembler::DEST_XYZW, CVuAssembler::VF11, CVuAssembler::VF5, CVuAssembler::VF11, CVuAssembler::BC_W),
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CVuAssembler::Lower::NOP());
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assembler.Write(
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CVuAssembler::Upper::NOP(),
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CVuAssembler::Lower::NOP());
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assembler.Write(
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CVuAssembler::Upper::NOP(),
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CVuAssembler::Lower::NOP());
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assembler.Write(
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CVuAssembler::Upper::MULq(CVuAssembler::DEST_XYZ, CVuAssembler::VF12, CVuAssembler::VF9),
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CVuAssembler::Lower::NOP());
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assembler.Write(
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CVuAssembler::Upper::MULq(CVuAssembler::DEST_XYZ, CVuAssembler::VF9, CVuAssembler::VF10),
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CVuAssembler::Lower::DIV(CVuAssembler::VF0, CVuAssembler::FVF_W, CVuAssembler::VF11, CVuAssembler::FVF_W));
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assembler.Write(
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CVuAssembler::Upper::NOP(),
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CVuAssembler::Lower::NOP());
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assembler.Write(
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CVuAssembler::Upper::MULq(CVuAssembler::DEST_XYZ, CVuAssembler::VF11, CVuAssembler::VF11),
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CVuAssembler::Lower::WAITQ());
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assembler.Write(
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CVuAssembler::Upper::NOP() | CVuAssembler::Upper::E_BIT,
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CVuAssembler::Lower::NOP());
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assembler.Write(
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CVuAssembler::Upper::NOP(),
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CVuAssembler::Lower::NOP());
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//Some transformation matrix (identity)
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virtualMachine.m_cpu.m_State.nCOP2[1] = uint128{Float::_1, Float::_0, Float::_0, Float::_0};
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virtualMachine.m_cpu.m_State.nCOP2[2] = uint128{Float::_0, Float::_1, Float::_0, Float::_0};
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virtualMachine.m_cpu.m_State.nCOP2[3] = uint128{Float::_0, Float::_0, Float::_1, Float::_0};
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virtualMachine.m_cpu.m_State.nCOP2[5] = uint128{Float::_0, Float::_0, Float::_0, Float::_1};
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//Some vectors that will be normalized
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virtualMachine.m_cpu.m_State.nCOP2[9] = uint128{Float::_2, Float::_2, Float::_2, Float::_2};
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virtualMachine.m_cpu.m_State.nCOP2[10] = uint128{Float::_4, Float::_4, Float::_4, Float::_4};
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virtualMachine.m_cpu.m_State.nCOP2[11] = uint128{Float::_8, Float::_8, Float::_8, Float::_8};
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virtualMachine.ExecuteTest(0);
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TEST_VERIFY(virtualMachine.m_cpu.m_State.nCOP2[12].nV0 == Float::_1);
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TEST_VERIFY(virtualMachine.m_cpu.m_State.nCOP2[12].nV1 == Float::_1);
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TEST_VERIFY(virtualMachine.m_cpu.m_State.nCOP2[12].nV2 == Float::_1);
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TEST_VERIFY(virtualMachine.m_cpu.m_State.nCOP2[9].nV0 == Float::_1);
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TEST_VERIFY(virtualMachine.m_cpu.m_State.nCOP2[9].nV1 == Float::_1);
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TEST_VERIFY(virtualMachine.m_cpu.m_State.nCOP2[9].nV2 == Float::_1);
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TEST_VERIFY(virtualMachine.m_cpu.m_State.nCOP2[11].nV0 == Float::_1);
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TEST_VERIFY(virtualMachine.m_cpu.m_State.nCOP2[11].nV1 == Float::_1);
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TEST_VERIFY(virtualMachine.m_cpu.m_State.nCOP2[11].nV2 == Float::_1);
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}
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