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Bugfix-- registers now appropriately truncated.

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git-svn-id: http://www.cdkersey.com/harp/harptool@117 0246edb2-e076-4747-b392-db732a341fa2
This commit is contained in:
chad
2013-01-18 04:32:23 +00:00
parent afe15f4ff1
commit ea03ccb47d
8 changed files with 45 additions and 22 deletions
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1
src/BUGS
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@@ -1,2 +1,3 @@
_ The assembly writer for the disassembler uses the old assembly format.
_ The BYTE directive was not updated when the word directive was; inconsistent
behavior.

10
src/Makefile
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@@ -1,7 +1,7 @@
################################################################################
# HARPtools by Chad D. Kersey, Summer 2011 #
################################################################################
CXXFLAGS=-g -DUSE_DEBUG=1 #-fPIC
CXXFLAGS=-g #-DUSE_DEBUG=3 #-fPIC
LIB_OBJS=args.o obj.o mem.o core.o instruction.o enc.o util.o lex.yy.o
@@ -24,13 +24,15 @@ enc.o : enc.cpp include/types.h include/util.h include/enc.h include/archdef.h\
harptool.o : harptool.cpp include/types.h include/core.h include/enc.h \
include/instruction.h include/mem.h include/obj.h \
include/archdef.h include/args.h include/help.h
instruction.o : instruction.cpp include/instruction.h include/obj.h
instruction.o : instruction.cpp include/instruction.h include/obj.h \
include/core.h
obj.o : obj.cpp include/types.h include/obj.h include/util.h \
include/asm-tokens.h include/debug.h
util.o : util.cpp include/types.h include/util.h
mem.o : mem.cpp include/types.h include/util.h include/mem.h include/debug.h
mem.o : mem.cpp include/types.h include/util.h include/mem.h include/debug.h \
include/core.h
core.o : core.cpp include/types.h include/util.h include/mem.h \
include/debug.h include/archdef.h
include/debug.h include/archdef.h include/core.h
QSIM_CXXFLAGS=-DEMU_INSTRUMENTATION

18
src/core.cpp
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@@ -116,16 +116,22 @@ void Core::step() {
#ifdef USE_DEBUG
if (USE_DEBUG >= 3) {
D(3, "Register state:");
for (unsigned i = 0; i < reg[0].size(); ++i)
D_RAW(" %r" << i << ": " << hex << reg[0][i]
<< '(' << shadowReg[i] << ')' << endl);
for (unsigned i = 0; i < reg[0].size(); ++i) {
D_RAW(" %r" << i << ':');
for (unsigned j = 0; j < reg.size(); ++j)
D_RAW(' ' << hex << reg[j][i] << ' ');
D_RAW('(' << shadowReg[i] << ')' << endl);
}
D(3, "Predicate state:");
D_RAW(" ");
for (unsigned i = 0; i < pred[0].size(); ++i) D_RAW(pred[0][i]);
D_RAW(endl << " (");
for (unsigned i = 0; i < shadowPReg.size(); ++i) D_RAW(shadowPReg[i]);
for (unsigned j = 0; j < pred.size(); ++j) {
for (unsigned i = 0; i < pred[j].size(); ++i) D_RAW(pred[0][i]);
D_RAW(endl);
}
D_RAW(" (");
for (unsigned i = 0; i < shadowPReg.size(); ++i) D_RAW(shadowPReg[i]);
D_RAW(')' << endl);
}
#endif
// Clean up.

4
src/include/archdef.h
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@@ -4,7 +4,6 @@
#ifndef __ARCHDEF_H
#define __ARCHDEF_H
#include <iostream>
#include <string>
#include <sstream>
@@ -16,7 +15,6 @@ namespace Harp {
struct Undefined {};
ArchDef(const std::string &s) {
std::cout << "New archdef for \"" << s << "\"\n";
std::istringstream iss(s.c_str());
iss >> wordSize;
@@ -31,8 +29,6 @@ namespace Harp {
iss >> sep >> nThds;
if (!iss || sep != '/') { extent = EXT_PREGS; return; }
extent = EXT_THDS;
std::cout << nRegs << " regs, " << nPRegs << " pred regs.\n";
}
operator std::string () const {

6
src/include/core.h
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@@ -24,8 +24,14 @@ namespace Harp {
Reg(Word c, Word n): cpuId(c), regNum(n), val(0) {}
Reg &operator=(T r) { val = r; doWrite(); return *this; }
operator T() { doRead(); return val; }
void trunc(Size s) {
Word mask((~0ull >> (sizeof(Word)-s)*8));
val &= mask;
}
private:
Word cpuId, regNum;
T val;

11
src/instruction.cpp
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@@ -145,15 +145,19 @@ void Instruction::executeOn(Core &c) {
case TLBFLUSH: c.mem.tlbFlush();
break;
case ADD: reg[rdest] = reg[rsrc[0]] + reg[rsrc[1]];
reg[rdest].trunc(wordSz);
break;
case SUB: reg[rdest] = reg[rsrc[0]] - reg[rsrc[1]];
reg[rdest].trunc(wordSz);
break;
case MUL: reg[rdest] = reg[rsrc[0]] + reg[rsrc[1]];
reg[rdest].trunc(wordSz);
break;
case DIV: if (reg[rsrc[1]] == 0) throw DomainException();
reg[rdest] = reg[rsrc[0]] / reg[rsrc[1]];
break;
case SHL: reg[rdest] = reg[rsrc[0]] << reg[rsrc[1]];
reg[rdest].trunc(wordSz);
break;
case MOD: if (reg[rsrc[1]] == 0) throw DomainException();
reg[rdest] = reg[rsrc[0]] % reg[rsrc[1]];
@@ -161,12 +165,16 @@ void Instruction::executeOn(Core &c) {
case AND: reg[rdest] = reg[rsrc[0]] & reg[rsrc[1]];
break;
case NEG: reg[rdest] = -(Word_s)reg[rsrc[0]];
reg[rdest].trunc(wordSz);
break;
case ADDI: reg[rdest] = reg[rsrc[0]] + immsrc;
reg[rdest].trunc(wordSz);
break;
case SUBI: reg[rdest] = reg[rsrc[0]] - immsrc;
reg[rdest].trunc(wordSz);
break;
case MULI: reg[rdest] = reg[rsrc[0]] * immsrc;
reg[rdest].trunc(wordSz);
break;
case DIVI: if (immsrc == 0) throw DomainException();
reg[rdest] = reg[rsrc[0]] / immsrc;
@@ -177,6 +185,7 @@ void Instruction::executeOn(Core &c) {
case SHRI: reg[rdest] = reg[rsrc[0]] >> immsrc;
break;
case SHLI: reg[rdest] = reg[rsrc[0]] << immsrc;
reg[rdest].trunc(wordSz);
break;
case ANDI: reg[rdest] = reg[rsrc[0]] & immsrc;
break;
@@ -211,6 +220,7 @@ void Instruction::executeOn(Core &c) {
#endif
break;
case LDI: reg[rdest] = immsrc;
reg[rdest].trunc(wordSz);
break;
case RTOP: pReg[pdest] = reg[rsrc[0]];
break;
@@ -242,6 +252,7 @@ void Instruction::executeOn(Core &c) {
case ITOF: reg[rdest] = Float(double(reg[rsrc[0]]), wordSz);
break;
case FTOI: reg[rdest] = Word_s(double(Float(reg[rsrc[0]], wordSz)));
reg[rdest].trunc(wordSz);
break;
case FNEG: reg[rdest] = Float(-double(Float(reg[rsrc[0]],wordSz)),wordSz);
break;

6
src/obj.cpp
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@@ -46,6 +46,7 @@ static uint64_t readParenExpression(const string &s, const map<string, Word> &d,
{
uint64_t (* const rPE)(const string&, const map<string, Word>&, int, int)
= readParenExpression;
if (end == start) return 0;
if (end==-1) end = s.length();
@@ -75,6 +76,9 @@ static uint64_t readParenExpression(const string &s, const map<string, Word> &d,
if (s[i] == '&') return rPE(s, d, start, i) & rPE(s, d, i+1, end);
}
// Unary -
if (s[start] == '-') return -rPE(s, d, start+1, end);
if (isdigit(s[start])) {
unsigned long long u;
sscanf(s.substr(start, end-start).c_str(), "%lli", &u);
@@ -86,7 +90,7 @@ static uint64_t readParenExpression(const string &s, const map<string, Word> &d,
map<string, Word>::const_iterator it = d.find(s.substr(start, end-start));
if (it != d.end()) return it->second;
cout << "TODO: Error message.\n";
cout << "Error on " << yyline << ": ";
exit(1);
}

11
src/test/2thread.s
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@@ -24,16 +24,13 @@ sumArr: ldi %r3, #0;
ldi %r4, #8;
loop: ld %r2, %r1, #0;
add %r3, %r3, %r2;
addi %r1, %r1, #8;
addi %r1, %r1, __WORD;
subi %r4, %r4, #1;
rtop @p0, %r4;
@p0 ? jmpi loop;
st %r3, %r1, #-64;
st %r3, %r1, (-__WORD*8)
jmprt %r5;
.perm rw
Array1:
.word -1 -2 -3 -4 -5 -6 -7 -8
Array2:
.word 1 2 3 4 5 6 7 8
Array1: .word -1 -2 -3 -4 -5 -6 -7 -8
Array2: .word 1 2 3 4 5 6 7 8