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Fixed emulator

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This commit is contained in:
felsabbagh3
2019-11-06 23:30:07 -05:00
parent 60e6ff0b42
commit 87ae5c8cdf
23 changed files with 947 additions and 793 deletions
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emulator/args.o
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17
emulator/core.cpp
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@@ -3,6 +3,7 @@
*******************************************************************************/
#include <iostream>
#include <iomanip>
// #define USE_DEBUG 7
// #define PRINT_ACTIVE_THREADS
@@ -36,7 +37,7 @@ Core::Core(const ArchDef &a, Decoder &d, MemoryUnit &mem, Word id):
a(a), iDec(d), mem(mem), steps(0)
{
for (unsigned i = 0; i < a.getNWarps(); ++i)
w.push_back(Warp(this));
w.push_back(Warp(this, i));
w[0].activeThreads = 1;
w[0].spawned = true;
@@ -53,6 +54,7 @@ void Core::step() {
cout << endl << "Threads:";
#endif
for (unsigned i = 0; i < w.size(); ++i) {
if (w[i].activeThreads) {
D(3, "Core step stepping warp " << i << '[' << w[i].activeThreads << ']');
@@ -93,11 +95,12 @@ void Core::printStats() const {
}
Warp::Warp(Core *c, Word id) :
core(c), pc(0), interruptEnable(true),
core(c), pc(0x80000000), interruptEnable(true),
supervisorMode(true), activeThreads(0), reg(0), pred(0),
shadowReg(core->a.getNRegs()), shadowPReg(core->a.getNPRegs()), id(id),
spawned(false), steps(0), insts(0), loads(0), stores(0)
{
D(3, "Creating a new thread with PC: " << hex << this->pc << '\n');
/* Build the register file. */
Word regNum(0);
for (Word j = 0; j < core->a.getNThds(); ++j) {
@@ -111,8 +114,10 @@ Warp::Warp(Core *c, Word id) :
pred[j].push_back(Reg<bool>(id, regNum++));
}
tmask.push_back(true);
shadowTmask.push_back(true);
bool act = false;
if (j == 0) act = true;
tmask.push_back(act);
shadowTmask.push_back(act);
}
Word csrNum(0);
@@ -197,9 +202,9 @@ void Warp::step() {
if (USE_DEBUG >= 3) {
D(3, "Register state:");
for (unsigned i = 0; i < reg[0].size(); ++i) {
D_RAW(" %r" << dec << i << ':');
D_RAW(" %r" << setfill(' ') << setw(2) << dec << i << ':');
for (unsigned j = 0; j < reg.size(); ++j)
D_RAW(' ' << hex << reg[j][i] << ' ');
D_RAW(' ' << setfill('0') << setw(8) << hex << reg[j][i] << setfill(' ') << ' ');
D_RAW('(' << shadowReg[i] << ')' << endl);
}
// D(3, "Predicate state:");

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emulator/core.o
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emulator/enc.o
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emulator/harptool
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emulator/harptool.o
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2
emulator/include/debug.h
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@@ -4,7 +4,7 @@
#ifndef __DEBUG_H
#define __DEBUG_H
// #define USE_DEBUG 9
#define USE_DEBUG 9
#ifdef USE_DEBUG
#include <iostream>

302
emulator/instruction.cpp
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@@ -138,18 +138,38 @@ void Instruction::executeOn(Warp &c) {
bool join = (op == GPGPU) && (func3 == 3);
predicated = (op == GPGPU) && ((func3 == 7) || (func3 == 2));
// predicated = (op == GPGPU) && ((func3 == 7) || (func3 == 2));
// bool is_branch = (op == B_INST);
// bool is_jump = (op == JAL_INST) || (op == JALR_INST);
bool is_gpgpu = (op == GPGPU);
bool is_tmc = is_gpgpu && (func3 == 0);
bool is_wspawn = is_gpgpu && (func3 == 1);
bool is_barrier = is_gpgpu && (func3 == 4);
bool is_split = is_gpgpu && (func3 == 2);
bool is_join = is_gpgpu && (func3 == 3);
bool gpgpu_zero = (is_tmc || is_barrier || is_wspawn) && (t != 0);
bool not_active = !c.tmask[t];
if (not_active || gpgpu_zero)
{
continue;
}
// printf("Predicated: %d, split: %d, join: %d\n",predicated, split, join );
// printf("%d && ((%d) || (%d))\n",(op == GPGPU), (func3 == 7), (func3 == 2) );
// cout << "before " << op << " = " << GPGPU << "\n";
if (((predicated && !reg[pred]) || !c.tmask[t]) && !split && !join)
{
// cout << "about to continue\n";
continue;
}
// if (((predicated && !reg[pred]) || !c.tmask[t]) && !split && !join)
// {
// // cout << "about to continue\n";
// continue;
// }
// cout << "after\n";
++c.insts;
@@ -163,6 +183,7 @@ void Instruction::executeOn(Warp &c) {
bool m_exten;
// std::cout << "op = " << op << "\n";
// std::cout << "R_INST: " << R_INST << "\n";
int num_to_wspawn;
switch (op) {
case NOP:
@@ -462,11 +483,11 @@ void Instruction::executeOn(Warp &c) {
//std::cout << "S_INST\n";
++c.stores;
memAddr = reg[rsrc[0]] + immsrc;
// //std::cout << "STORE MEM ADDRESS: " << std::hex << reg[rsrc[0]] << " + " << immsrc << "\n";
std::cout << "STORE MEM ADDRESS: " << std::hex << reg[rsrc[0]] << " + " << immsrc << "\n";
// //std::cout << "FUNC3: " << func3 << "\n";
if (memAddr == 0x00010000)
if ((memAddr == 0x00010000) && (t == 0))
{
std::cout << (char) reg[rsrc[1]];
fprintf(stderr, "%c", (char) reg[rsrc[1]]);
break;
}
switch (func3)
@@ -558,7 +579,7 @@ void Instruction::executeOn(Warp &c) {
case JAL_INST:
//std::cout << "JAL_INST\n";
if (!pcSet) nextPc = (c.pc - 4) + immsrc;
if (!pcSet) //std::cout << "JAL... SETTING PC: " << nextPc << "\n";
if (!pcSet) {/*std::cout << "JAL... SETTING PC: " << nextPc << "\n"; */}
if (rdest != 0)
{
reg[rdest] = c.pc;
@@ -566,9 +587,9 @@ void Instruction::executeOn(Warp &c) {
pcSet = true;
break;
case JALR_INST:
//std::cout << "JALR_INST\n";
std::cout << "JALR_INST\n";
if (!pcSet) nextPc = reg[rsrc[0]] + immsrc;
if (!pcSet) //std::cout << "JALR... SETTING PC: " << nextPc << "\n";
if (!pcSet) {/*std::cout << "JALR... SETTING PC: " << nextPc << "\n";*/ }
if (rdest != 0)
{
reg[rdest] = c.pc;
@@ -578,76 +599,85 @@ void Instruction::executeOn(Warp &c) {
case SYS_INST:
//std::cout << "SYS_INST\n";
temp = reg[rsrc[0]];
switch (func3)
if (immsrc == 0x20) // ThreadID
{
case 1:
// printf("Case 1\n");
if (rdest != 0)
{
reg[rdest] = c.csr[immsrc & 0x00000FFF];
}
c.csr[immsrc & 0x00000FFF] = temp;
break;
case 2:
// printf("Case 2\n");
if (rdest != 0)
{
// printf("Reading from CSR: %d = %d\n", (immsrc & 0x00000FFF), c.csr[immsrc & 0x00000FFF]);
reg[rdest] = c.csr[immsrc & 0x00000FFF];
}
// printf("Writing to CSR --> %d = %d\n", immsrc, (temp | c.csr[immsrc & 0x00000FFF]));
c.csr[immsrc & 0x00000FFF] = temp | c.csr[immsrc & 0x00000FFF];
break;
case 3:
// printf("Case 3\n");
if (rdest != 0)
{
reg[rdest] = c.csr[immsrc & 0x00000FFF];
}
c.csr[immsrc & 0x00000FFF] = temp & (~c.csr[immsrc & 0x00000FFF]);
break;
case 5:
// printf("Case 5\n");
if (rdest != 0)
{
reg[rdest] = c.csr[immsrc & 0x00000FFF];
}
c.csr[immsrc & 0x00000FFF] = rsrc[0];
break;
case 6:
// printf("Case 6\n");
if (rdest != 0)
{
reg[rdest] = c.csr[immsrc & 0x00000FFF];
}
c.csr[immsrc & 0x00000FFF] = rsrc[0] | c.csr[immsrc & 0x00000FFF];
break;
case 7:
// printf("Case 7\n");
if (rdest != 0)
{
reg[rdest] = c.csr[immsrc & 0x00000FFF];
}
c.csr[immsrc & 0x00000FFF] = rsrc[0] & (~c.csr[immsrc & 0x00000FFF]);
break;
case 0:
if (immsrc < 2)
{
//std::cout << "INTERRUPT ECALL/EBREAK\n";
nextActiveThreads = 0;
c.spawned = false;
// c.interrupt(0);
}
break;
default:
break;
reg[rdest] = t;
D(2, "CSR Reading tid " << hex << immsrc << dec << " and returning " << reg[rdest]);
} else if (immsrc == 0x21) // WarpID
{
reg[rdest] = c.id;
D(2, "CSR Reading wid " << hex << immsrc << dec << " and returning " << reg[rdest]);
}
// switch (func3)
// {
// case 1:
// // printf("Case 1\n");
// if (rdest != 0)
// {
// reg[rdest] = c.csr[immsrc & 0x00000FFF];
// }
// c.csr[immsrc & 0x00000FFF] = temp;
// break;
// case 2:
// // printf("Case 2\n");
// if (rdest != 0)
// {
// // printf("Reading from CSR: %d = %d\n", (immsrc & 0x00000FFF), c.csr[immsrc & 0x00000FFF]);
// reg[rdest] = c.csr[immsrc & 0x00000FFF];
// }
// // printf("Writing to CSR --> %d = %d\n", immsrc, (temp | c.csr[immsrc & 0x00000FFF]));
// c.csr[immsrc & 0x00000FFF] = temp | c.csr[immsrc & 0x00000FFF];
// break;
// case 3:
// // printf("Case 3\n");
// if (rdest != 0)
// {
// reg[rdest] = c.csr[immsrc & 0x00000FFF];
// }
// c.csr[immsrc & 0x00000FFF] = temp & (~c.csr[immsrc & 0x00000FFF]);
// break;
// case 5:
// // printf("Case 5\n");
// if (rdest != 0)
// {
// reg[rdest] = c.csr[immsrc & 0x00000FFF];
// }
// c.csr[immsrc & 0x00000FFF] = rsrc[0];
// break;
// case 6:
// // printf("Case 6\n");
// if (rdest != 0)
// {
// reg[rdest] = c.csr[immsrc & 0x00000FFF];
// }
// c.csr[immsrc & 0x00000FFF] = rsrc[0] | c.csr[immsrc & 0x00000FFF];
// break;
// case 7:
// // printf("Case 7\n");
// if (rdest != 0)
// {
// reg[rdest] = c.csr[immsrc & 0x00000FFF];
// }
// c.csr[immsrc & 0x00000FFF] = rsrc[0] & (~c.csr[immsrc & 0x00000FFF]);
// break;
// case 0:
// if (immsrc < 2)
// {
// //std::cout << "INTERRUPT ECALL/EBREAK\n";
// nextActiveThreads = 0;
// c.spawned = false;
// // c.interrupt(0);
// }
// break;
// default:
// break;
// }
break;
case TRAP:
//std::cout << "INTERRUPT TRAP\n";
@@ -670,30 +700,44 @@ void Instruction::executeOn(Warp &c) {
//std::cout << "GPGPU\n";
switch(func3)
{
case 0:
case 1:
// WSPAWN
//std::cout << "WSPAWN\n";
std::cout << "WSPAWN\n";
if (sjOnce)
{
sjOnce = false;
D(0, "Spawning a new warp.");
// //std::cout << "SIZE: " << c.core->w.size() << "\n";
for (unsigned i = 0; i < c.core->w.size(); ++i)
num_to_wspawn = reg[rsrc[0]];
D(0, "Spawning " << num_to_wspawn << " new warps at PC: " << hex << reg[rsrc[1]]);
for (unsigned i = 1; i < num_to_wspawn; ++i)
{
// std::cout << "SPAWNING WARP\n";
Warp &newWarp(c.core->w[i]);
// //std::cout << "STARTING\n";
if (newWarp.spawned == false) {
// if (newWarp.spawned == false)
{
// //std::cout << "ABOUT TO START\n";
newWarp.pc = reg[rsrc[0]];
newWarp.reg[0] = reg;
newWarp.csr = c.csr;
newWarp.pc = reg[rsrc[1]];
// newWarp.reg[0] = reg;
// newWarp.csr = c.csr;
for (int kk = 0; kk < newWarp.tmask.size(); kk++)
{
if (kk == 0)
{
newWarp.tmask[kk] = true;
}
else
{
newWarp.tmask[kk] = false;
}
}
newWarp.activeThreads = 1;
newWarp.supervisorMode = false;
newWarp.spawned = true;
break;
}
}
break;
}
break;
case 2:
@@ -704,12 +748,16 @@ void Instruction::executeOn(Warp &c) {
{
sjOnce = false;
if (checkUnanimous(pred, c.reg, c.tmask)) {
//std::cout << "Unanimous pred: " << pred << " val: " << reg[pred] << "\n";
std::cout << "Unanimous pred: " << pred << " val: " << reg[pred] << "\n";
DomStackEntry e(c.tmask);
e.uni = true;
c.domStack.push(e);
break;
}
cout << "Split: Original TM: ";
for (auto y : c.tmask) cout << y << " ";
cout << "\n";
DomStackEntry e(pred, c.reg, c.tmask, c.pc);
c.domStack.push(c.tmask);
c.domStack.push(e);
@@ -717,49 +765,79 @@ void Instruction::executeOn(Warp &c) {
{
c.tmask[i] = !e.tmask[i] && c.tmask[i];
}
cout << "Split: New TM\n";
for (auto y : c.tmask) cout << y << " ";
cout << "\n";
cout << "Split: Pushed TM PC: " << hex << e.pc << dec << "\n";
for (auto y : e.tmask) cout << y << " ";
cout << "\n";
}
}
break;
}
case 3:
// JOIN
//std::cout << "JOIN\n";
D(3, "JOIN INSTRUCTION");
if (sjOnce)
{
sjOnce = false;
if (!c.domStack.empty() && c.domStack.top().uni) {
D(2, "Uni branch at join");
printf("NEW DOMESTACK: \n");
c.tmask = c.domStack.top().tmask;
c.domStack.pop();
break;
}
if (!c.domStack.top().fallThrough) {
if (!pcSet) nextPc = c.domStack.top().pc;
if (!pcSet) {
nextPc = c.domStack.top().pc;
cout << "join: NOT FALLTHROUGH PC: " << hex << nextPc << dec << '\n';
}
pcSet = true;
}
cout << "Join: Old TM: ";
for (auto y : c.tmask) cout << y << " ";
cout << "\n";
c.tmask = c.domStack.top().tmask;
cout << "Join: New TM: " << '\n';
for (auto y : c.tmask) cout << y << " ";
cout << "\n";
c.domStack.pop();
}
break;
case 4:
// JMPRT
//std::cout << "JMPRT\n";
nextActiveThreads = 1;
if (!pcSet) nextPc = reg[rsrc[0]];
pcSet = true;
// is_barrier
break;
case 5:
// CLONE
//std::cout << "CLONE\n";
// //std::cout << "CLONING REG: " << rsrc[0] << " lane: " << reg[rsrc[0]] << "\n";
c.reg[reg[rsrc[0]]] = reg;
break;
case 6:
// JALRS
case 0:
// TMC
//std::cout << "JALRS\n";
nextActiveThreads = reg[rsrc[1]];
reg[rdest] = c.pc;
if (!pcSet) nextPc = reg[rsrc[0]];
pcSet = true;
nextActiveThreads = reg[rsrc[0]];
{
for (int ff = 0; ff < c.tmask.size(); ff++)
{
if (ff < nextActiveThreads)
{
c.tmask[ff] = true;
}
else
{
c.tmask[ff] = false;
}
}
}
if (nextActiveThreads == 0)
{
c.spawned = false;
}
// reg[rdest] = c.pc;
// if (!pcSet) nextPc = reg[rsrc[0]];
// pcSet = true;
// //std::cout << "ACTIVE_THREDS: " << rsrc[1] << " val: " << reg[rsrc[1]] << "\n";
// //std::cout << "nextPC: " << rsrc[0] << " val: " << std::hex << reg[rsrc[0]] << "\n";
break;
@@ -794,7 +872,11 @@ void Instruction::executeOn(Warp &c) {
// This way, if pc was set by a side effect (such as interrupt), it will
// retain its new value.
if (pcSet) c.pc = nextPc;
if (pcSet)
{
c.pc = nextPc;
cout << "Next PC: " << hex << nextPc << dec << "\n";
}
if (nextActiveThreads > c.reg.size()) {
cerr << "Error: attempt to spawn " << nextActiveThreads << " threads. "

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emulator/mem.cpp
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@@ -102,10 +102,10 @@ void MemoryUnit::ADecoder::write(Addr a, Word w, bool sup, Size wordSize) {
Word before = m.read(a);
Word new_word = w;
if (a == 0x8000012c)
{
printf("WRITING TO 0x8000012c -> %d\n", w);
}
// if (a == 0x00010000)
// {
// fprintf(stderr, "%c", w);
// }
if (wordSize == 8)
{

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emulator/test_riscv.sh
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@@ -1,4 +1,4 @@
echo start > results.txt
echo ../kernel/vortex_test.hex
./harptool -E -a rv32i --core ../kernel/vortex_test.hex -s -b
./harptool -E -a rv32i --core ../runtime/vortex_runtime.hex -s -b 1> emulator.debug

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