Matthew Poremba has uploaded this change for review. (
https://gem5-review.googlesource.com/c/public/gem5/+/67411?usp=email )
Change subject: arch-vega: Implement ds_write_b8_d16_hi
......................................................................
arch-vega: Implement ds_write_b8_d16_hi
Writes a byte to the upper 16-bit input word to an address.
Change-Id: I0bfd573526b9c46585d0008cde07c769b1d29ebd
---
M src/arch/amdgpu/vega/decoder.cc
M src/arch/amdgpu/vega/insts/instructions.cc
M src/arch/amdgpu/vega/insts/instructions.hh
3 files changed, 108 insertions(+), 2 deletions(-)
diff --git a/src/arch/amdgpu/vega/decoder.cc
b/src/arch/amdgpu/vega/decoder.cc
index 18c72a4..291dd69 100644
--- a/src/arch/amdgpu/vega/decoder.cc
+++ b/src/arch/amdgpu/vega/decoder.cc
@@ -7706,8 +7706,7 @@
GPUStaticInst*
Decoder::decode_OP_DS__DS_WRITE_B8_D16_HI(MachInst iFmt)
{
- fatal("Trying to decode instruction without a class\n");
- return nullptr;
+ return new Inst_DS__DS_WRITE_B8_D16_HI(&iFmt->iFmt_DS);
}
GPUStaticInst*
diff --git a/src/arch/amdgpu/vega/insts/instructions.cc
b/src/arch/amdgpu/vega/insts/instructions.cc
index 6cf01fb..f019dfd 100644
--- a/src/arch/amdgpu/vega/insts/instructions.cc
+++ b/src/arch/amdgpu/vega/insts/instructions.cc
@@ -34877,6 +34877,68 @@
Inst_DS__DS_WRITE_B8::completeAcc(GPUDynInstPtr gpuDynInst)
{
} // completeAcc
+ // --- Inst_DS__DS_WRITE_B8_D16_HI class methods ---
+
+ Inst_DS__DS_WRITE_B8_D16_HI::Inst_DS__DS_WRITE_B8_D16_HI(InFmt_DS
*iFmt)
+ : Inst_DS(iFmt, "ds_write_b8_d16_hi")
+ {
+ setFlag(MemoryRef);
+ setFlag(Store);
+ } // Inst_DS__DS_WRITE_B8_D16_HI
+
+ Inst_DS__DS_WRITE_B8_D16_HI::~Inst_DS__DS_WRITE_B8_D16_HI()
+ {
+ } // ~Inst_DS__DS_WRITE_B8_D16_HI
+
+ // --- description from .arch file ---
+ // MEM[ADDR] = DATA[23:16].
+ // Byte write in to high word.
+ void
+ Inst_DS__DS_WRITE_B8_D16_HI::execute(GPUDynInstPtr gpuDynInst)
+ {
+ Wavefront *wf = gpuDynInst->wavefront();
+
+ if (gpuDynInst->exec_mask.none()) {
+ wf->decLGKMInstsIssued();
+ return;
+ }
+
+ gpuDynInst->execUnitId = wf->execUnitId;
+ gpuDynInst->latency.init(gpuDynInst->computeUnit());
+ gpuDynInst->latency.set(
+ gpuDynInst->computeUnit()->cyclesToTicks(Cycles(24)));
+ ConstVecOperandU32 addr(gpuDynInst, extData.ADDR);
+ ConstVecOperandU8 data(gpuDynInst, extData.DATA0);
+
+ addr.read();
+ data.read();
+
+ calcAddr(gpuDynInst, addr);
+
+ for (int lane = 0; lane < NumVecElemPerVecReg; ++lane) {
+ if (gpuDynInst->exec_mask[lane]) {
+ (reinterpret_cast<VecElemU8*>(gpuDynInst->d_data))[lane]
+ = bits(data[lane], 23, 16);
+ }
+ }
+
+
gpuDynInst->computeUnit()->localMemoryPipe.issueRequest(gpuDynInst);
+ } // execute
+
+ void
+ Inst_DS__DS_WRITE_B8_D16_HI::initiateAcc(GPUDynInstPtr gpuDynInst)
+ {
+ Addr offset0 = instData.OFFSET0;
+ Addr offset1 = instData.OFFSET1;
+ Addr offset = (offset1 << 8) | offset0;
+
+ initMemWrite<VecElemU8>(gpuDynInst, offset);
+ } // initiateAcc
+
+ void
+ Inst_DS__DS_WRITE_B8_D16_HI::completeAcc(GPUDynInstPtr gpuDynInst)
+ {
+ } // completeAcc
// --- Inst_DS__DS_WRITE_B16 class methods ---
Inst_DS__DS_WRITE_B16::Inst_DS__DS_WRITE_B16(InFmt_DS *iFmt)
diff --git a/src/arch/amdgpu/vega/insts/instructions.hh
b/src/arch/amdgpu/vega/insts/instructions.hh
index 2896732..dc2ee08 100644
--- a/src/arch/amdgpu/vega/insts/instructions.hh
+++ b/src/arch/amdgpu/vega/insts/instructions.hh
@@ -31934,6 +31934,40 @@
void completeAcc(GPUDynInstPtr) override;
}; // Inst_DS__DS_WRITE_B8
+ class Inst_DS__DS_WRITE_B8_D16_HI : public Inst_DS
+ {
+ public:
+ Inst_DS__DS_WRITE_B8_D16_HI(InFmt_DS*);
+ ~Inst_DS__DS_WRITE_B8_D16_HI();
+
+ int
+ getNumOperands() override
+ {
+ return numDstRegOperands() + numSrcRegOperands();
+ } // getNumOperands
+
+ int numDstRegOperands() override { return 0; }
+ int numSrcRegOperands() override { return 2; }
+
+ int
+ getOperandSize(int opIdx) override
+ {
+ switch (opIdx) {
+ case 0: //vgpr_a
+ return 4;
+ case 1: //vgpr_d0
+ return 1;
+ default:
+ fatal("op idx %i out of bounds\n", opIdx);
+ return -1;
+ }
+ } // getOperandSize
+
+ void execute(GPUDynInstPtr) override;
+ void initiateAcc(GPUDynInstPtr) override;
+ void completeAcc(GPUDynInstPtr) override;
+ }; // Inst_DS__DS_WRITE_B8_D16_HI
+
class Inst_DS__DS_WRITE_B16 : public Inst_DS
{
public:
--
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Gerrit-Project: public/gem5
Gerrit-Branch: develop
Gerrit-Change-Id: I0bfd573526b9c46585d0008cde07c769b1d29ebd
Gerrit-Change-Number: 67411
Gerrit-PatchSet: 1
Gerrit-Owner: Matthew Poremba <matthew.pore...@amd.com>
Gerrit-MessageType: newchange
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