/**
* emitPreCall
*
* allocate AR
* store return address & fp
* save caller-saved regs
* jump to callee
*/
void emitPreCall(DList instList, SymTable symtab, int index){
//get name for func
char* funcName = (char*)SymGetFieldByIndex(symtab,index,SYM_NAME_FIELD);
//save $ra
char* inst = ssave("\tsw $ra,-4($sp)");
dlinkAppend(instList,dlinkNodeAlloc(inst));
char regN[5];
int si = 0;
//save t0-t9 regs
for( ; si<10; si++){
sprintf(regN,"$t%d,%d($sp)",si,(-si*4)-8);
inst = nssave(2,"\tsw ",regN);
dlinkAppend(instList,dlinkNodeAlloc(inst));
}
//allocate AR
inst = ssave("\taddi $sp,$sp,-80");
dlinkAppend(instList,dlinkNodeAlloc(inst));
//save fp
inst = ssave("\tsw $fp,0($sp)");
dlinkAppend(instList,dlinkNodeAlloc(inst));
//jump to callee
char * insta = nssave(2,"\tjal\t",funcName);
dlinkAppend(instList,dlinkNodeAlloc(insta));
}
/**
* Add the instructions needed to write a value using the print system call.
*
* @param instList a Dlist of instructions
* @param symtab a symbol table
* @param regIndex the symbol table index of the register to be printed (must be addres if string)
* @param syscallService the system call print service to use
*/
void emitWriteExpression(DList instList,SymTable symtab, int regIndex, char* syscallService) {
char *inst;
inst = nssave(2,"\tmove $a0, ",
(char*)SymGetFieldByIndex(symtab,regIndex,SYM_NAME_FIELD));
dlinkAppend(instList,dlinkNodeAlloc(inst));
freeIntegerRegister((int)SymGetFieldByIndex(symtab,regIndex,SYMTAB_REGISTER_INDEX_FIELD));
inst = nssave(2,"\tli $v0, ",syscallService);
dlinkAppend(instList,dlinkNodeAlloc(inst));
inst = ssave("\tsyscall");
dlinkAppend(instList,dlinkNodeAlloc(inst));
inst = nssave(2,"\tli $v0, ",SYSCALL_PRINT_STRING);
dlinkAppend(instList,dlinkNodeAlloc(inst));
inst = ssave("\tla, $a0, .newline");
dlinkAppend(instList,dlinkNodeAlloc(inst));
inst = ssave("\tsyscall");
dlinkAppend(instList,dlinkNodeAlloc(inst));
}
/**
* emitPreReturn
* restore callee-saved regs
* discard local data
* restore callers fp
* jump to return address
*/
void emitPreReturn(DList instList){
//discard local data
char* inst = ssave("\tmove $sp,$fp");
dlinkAppend(instList,dlinkNodeAlloc(inst));
int si = 0;
char regN[5];
//restore callee-saved regs ($s0-$s7)
for( ; si<8; si++)
{
sprintf(regN,"$s%d,%d($sp)",si,(si*4)+4);
inst = nssave(2,"\tlw ",regN);
dlinkAppend(instList,dlinkNodeAlloc(inst));
}
//restore callers fp
inst = ssave("\tlw $fp,($fp)");
dlinkAppend(instList,dlinkNodeAlloc(inst));
//load return address into $ra
inst = ssave("\tlw $ra,76($sp)");
dlinkAppend(instList,dlinkNodeAlloc(inst));
/*
//save return value from $v0 into stack where ra was before
inst = ssave("\tsw $v0 76($sp)");
dlinkAppend(instList,dlinkNodeAlloc(inst));
*/
//jump to return address
inst = ssave("\tjr\t$ra");
dlinkAppend(instList,dlinkNodeAlloc(inst));
}
void emitExit(DList instList) {
char *inst = nssave(2,"\tli $v0, ",SYSCALL_EXIT);
dlinkAppend(instList,dlinkNodeAlloc(inst));
inst = ssave("\tsyscall");
dlinkAppend(instList,dlinkNodeAlloc(inst));
}
/**
* emitPostReturn
* dallocate basic AR
* restore caller-saved regs
* restore reference parameters
*/
int emitPostReturn(DList instList,SymTable symtab){
//get new reg
int regIndex = getFreeIntegerRegisterIndex(symtab);
char* regName = (char*)SymGetFieldByIndex(symtab,regIndex,SYM_NAME_FIELD);
//deallocate basic AR
char* inst = ssave("\taddi $sp, $sp,80");
dlinkAppend(instList,dlinkNodeAlloc(inst));
//return
inst = nssave(3,"\tmove ",regName,", $v0");
dlinkAppend(instList,dlinkNodeAlloc(inst));
//restore t0-t9 regs
char regN[5];
int si = 0;
for( ; si<10; si++){
sprintf(regN,"$t%d,%d($sp)",si,(-si*4)-8);
inst = nssave(2,"\tlw ",regN);
dlinkAppend(instList,dlinkNodeAlloc(inst));
}
return regIndex;
}
static int SymFieldIndex(SymTable ip, char* field)
{
int i = 0, found;
found = SymFieldFind(ip, field, &i);
/* two possible cases
* found = 1 ---> we've got a sparse index in i
* ip->FieldNames[i] == 0 ---> we've got a sparse index in i and
* we must initialize it
*/
#ifdef DEBUG
fprintf(stderr, "\n\tsuccess: %d.\n",i);
#endif
if (ip->FieldNames[i] == (char*)0)
{
ip->FieldNames[i] = ssave(field);
ip->FieldVals[i]= (Generic*) malloc(sizeof(Generic)*ip->NumSlots);
bzero((char *)ip->FieldVals[i], sizeof(Generic)*ip->NumSlots); /* JMC -- initially 0 */
ip->InitVals[i] = 0;
ip->CleanupFns[i] = (SymCleanupFunc)0;
}
return i;
}
void MultiNewton::step(doublereal* x, doublereal* step,
OneDim& r, MultiJac& jac, int loglevel)
{
size_t iok;
size_t sz = r.size();
r.eval(npos, x, step);
#undef DEBUG_STEP
#ifdef DEBUG_STEP
vector_fp ssave(sz, 0.0);
for (size_t n = 0; n < sz; n++) {
step[n] = -step[n];
ssave[n] = step[n];
}
#else
for (size_t n = 0; n < sz; n++) {
step[n] = -step[n];
}
#endif
iok = jac.solve(step, step);
// if iok is non-zero, then solve failed
if (iok != 0) {
iok--;
size_t nd = r.nDomains();
size_t n;
for (n = nd-1; n != npos; n--)
if (iok >= r.start(n)) {
break;
}
Domain1D& dom = r.domain(n);
size_t offset = iok - r.start(n);
size_t pt = offset/dom.nComponents();
size_t comp = offset - pt*dom.nComponents();
throw CanteraError("MultiNewton::step",
"Jacobian is singular for domain "+
dom.id() + ", component "
+dom.componentName(comp)+" at point "
+int2str(pt)+"\n(Matrix row "
+int2str(iok)+") \nsee file bandmatrix.csv\n");
} else if (int(iok) < 0)
throw CanteraError("MultiNewton::step",
"iok = "+int2str(iok));
#ifdef DEBUG_STEP
bool ok = false;
Domain1D* d;
if (!ok) {
for (size_t n = 0; n < sz; n++) {
d = r.pointDomain(n);
int nvd = d->nComponents();
int pt = (n - d->loc())/nvd;
cout << "step: " << pt << " " <<
r.pointDomain(n)->componentName(n - d->loc() - nvd*pt)
<< " " << x[n] << " " << ssave[n] << " " << step[n] << endl;
}
}
#endif
}
/**
* emitPostCall
*
* Save callee-saved regs
* extend AR for locals
* find static data area
* initialize locals
* fall through to code
* @return index to label in symbol table for caller methods
*/
void emitPostCall(DList instList, SymtabStack symtabStack, int index, int frameSize){
SymTable symtab = currentSymtab(symtabStack);
SymTable symtab_0 = lastSymtab(symtabStack);
char* name = (char*)SymGetFieldByIndex(symtab_0, index,SYM_NAME_FIELD);
char* inst = nssave(2,name,":");
dlinkAppend(instList,dlinkNodeAlloc(inst));
//save $ra
inst = ssave("\tsw $ra,76($sp)");
dlinkAppend(instList,dlinkNodeAlloc(inst));
char regN[5];
char frameStr[10];
int si = 0;
//save s0-s7 regs
for( ; si<8; si++){
sprintf(regN,"$s%d,%d($sp)",si,(si*4)+4);
inst = nssave(2,"\tsw ",regN);
dlinkAppend(instList,dlinkNodeAlloc(inst));
}
inst = ssave("\tmove $fp,$sp");
dlinkAppend(instList,dlinkNodeAlloc(inst));
//allocate room for any local variables
if (frameSize != 0) {
sprintf(frameStr,"%d",frameSize);
inst = nssave(2,"\taddi $sp,$sp,",frameStr);
dlinkAppend(instList,dlinkNodeAlloc(inst));
//store any local variables on the stack(kind of)
int i = 0;
int max = SymMaxIndex(symtab);
int offset = 0;
for(;i<=max;i++)
{
offset = -(int)SymGetFieldByIndex(symtab,i,SYMTAB_OFFSET_FIELD);
SymPutFieldByIndex(symtab,i,SYMTAB_OFFSET_FIELD,(Generic)offset);
}
}
}
void MainWindow::connections() {
connect(open, SIGNAL(triggered()), this, SLOT(sopen()));
connect(save, SIGNAL(triggered()), this, SLOT(ssave()));
connect(revert, SIGNAL(triggered()), this, SLOT(srevert()));
connect(close, SIGNAL(triggered()), this, SLOT(sclose()));
connect(calculator, SIGNAL(triggered()), this, SLOT(scalculator()));
connect(bnPlus, SIGNAL(pressed()), this, SLOT(plus()));
connect(bnMinus, SIGNAL(pressed()), this, SLOT(minus()));
connect(bnTimes, SIGNAL(pressed()), this, SLOT(times()));
connect(bnDivide, SIGNAL(pressed()), this, SLOT(divide()));
}
/**
* Add the instructions needed to read a variable using the read system call.
*
* @param instList a DList of instructions
* @param symtab a symbol table
* @param addrIndex the symbol table index of the register holding the address that is to be read into
*/
void emitReadVariable(DList instList, SymTable symtab, int addrIndex) {
char* inst;
inst = nssave(2,"\tli $v0, ", SYSCALL_READ_INTEGER);
dlinkAppend(instList,dlinkNodeAlloc(inst));
inst = ssave("\tsyscall");
dlinkAppend(instList,dlinkNodeAlloc(inst));
inst = nssave(3,"\tsw $v0, 0(",
(char*)SymGetFieldByIndex(symtab,addrIndex,SYM_NAME_FIELD),")");
dlinkAppend(instList,dlinkNodeAlloc(inst));
freeIntegerRegister((int)SymGetFieldByIndex(symtab,addrIndex,SYMTAB_REGISTER_INDEX_FIELD));
}
/**
* Emit the assembly prologue for a procedure
*
* @param frameSize The number of bytes need for local variables declared in main
*/
void emitProcedurePrologue(DList instList,SymTable symtab, int index, int frameSize) {
char *name = (char*)SymGetFieldByIndex(symtab,index,SYM_NAME_FIELD);
char* inst = nssave(2,"\t.globl ",name);
dlinkAppend(instList,dlinkNodeAlloc(inst));
inst = nssave(2,name,":\tnop");
dlinkAppend(instList,dlinkNodeAlloc(inst));
char frameStr[10];
inst = ssave("\tmove $fp,$sp");
dlinkAppend(instList,dlinkNodeAlloc(inst));
if (frameSize != 0) {
sprintf(frameStr,"%d",frameSize);
inst = nssave(2,"\tadd $sp, $sp, ",frameStr);
dlinkAppend(instList,dlinkNodeAlloc(inst));
}
globalOffset = frameSize;
}
/**
*
* returns an index for "name". If "name" is not in the symbol table,
* then it is inserted in an empty slot.
*
* @param ip a symbol table
* @param name a key to lookup in 'ip'
* @return see above
*/
int SymIndex(SymTable ip, char* name)
{
register int i, initial, found, count;
char **Names;
Names = (char**) ip->FieldVals[ip->NameField];
initial = hash_string(name, ip->NumIndices);
i = initial;
found = 0;
count = 1;
#ifdef DEBUG
fprintf(stderr, "SymIndex(%d,%s).\n\tinitial probe: %d", ip, name, i);
#endif
while(ip->Index[i] != -1 && found == 0)
{
if (strcmp(name, Names[ip->Index[i]]) == 0)
found = 1;
else /* 16 is relatively prime to a Mersenne prime! */
{
count++;
i = (i + 16) % ip->NumIndices;
#ifdef DEBUG
fprintf(stderr, "\tre-probe: %d", i);
if ((count % 4) == 0)
fprintf(stderr,"\n");
#endif
if ((count > 10 && /* too many collisions! */
ip->NextSlot + ip->NextSlot > ip->NumIndices) || /* limit it!*/
(i == initial)) /* or a full table */
{
OverflowIndex(ip);
return SymIndex(ip,name); /* real sloppy loop exit - kdc */
}
}
}
/* two possible cases
* found = 1 ---> we've got a sparse index in i
* ip->Index[i] == -1 ---> we've got a sparse index in i and
* we must initialize it
*/
#ifdef DEBUG
fprintf(stderr, "\n\tsuccess: %d.\n", i);
#endif
if (ip->Index[i] == -1)
{
ip->Index[i] = ip->NextSlot++;
Names[ip->Index[i]] = ssave(name);
if (ip->NextSlot == ip->NumSlots)
OverflowVectors(ip);
}
return ip->Index[i];
}