void
makehdr(const char *filename, char *header)
{
char tmpstr[MAXLINE];
// header format: "-h- filename size\n"
clearstr(header);
strcat(header, archdr);
strcat(header, STR_BLANK);
strcat(header, filename);
strcat(header, STR_BLANK);
clearstr(tmpstr);
strcat(header, itoc(fsize(filename), tmpstr));
strcat(header, STR_NEWLINE);
}
static void init_user_struct(struct userNode *user) {
user->next = NULL;
user->prev = NULL;
user->chanlist_first = NULL;
user->chanlist_last = NULL;
clearstr(user->host, MAX_MASKLEN);
clearstr(user->hostmask, MAX_HOSTMASKLEN);
clearstr(user->info, MAX_INFOLEN);
clearstr(user->nick, MAX_NICKLEN);
clearstr(user->user, MAX_USERLEN);
user->user_mode = 0;
user->chan_count = 0;
return ;
}
int main(int argc, char **argv)
{
CREDUI_INFO cui;
DWORD err;
BOOL save_checkbox = FALSE;
TCHAR target[1] = TEXT("");
TCHAR user[3] = TEXT("NA");
TCHAR pw[PWLEN];
TCHAR *msg;
int noblank = argv[1][0] == 'T' ? 1 : 0;
if (argc == 2)
msg = (char*) std::string(MESSAGE_DEFAULT).c_str();
else
msg = TEXT(argv[2]);
cui.cbSize = sizeof(CREDUI_INFO);
cui.hwndParent = NULL;
cui.pszMessageText = TEXT(msg);
cui.pszCaptionText = TEXT(TITLEBAR_TEXT);
cui.hbmBanner = NULL;
int getpass = 1;
while (getpass)
{
clearstr(PWLEN, pw);
err = CredUIPromptForCredentials(&cui, target, NULL, 0, user, 0, pw, PWLEN, &save_checkbox, CREDENTIALS_FLAGS);
if (noblank && pw[0] == '\0')
MessageBox(NULL, "No blank input please!", TITLEBAR_TEXT, MB_ICONWARNING | MB_SETFOREGROUND);
else
getpass = 0;
}
printf("%s\n", pw);
clearstr(PWLEN, pw);
return 0;
}
char *my_strcut(char *str, char *cut)
{
int len;
char *dest;
len = my_strlen(cut);
if (len > my_strlen(str))
return (str);
if (!(dest = malloc(sizeof(char) * (my_strlen(str) + 1))))
{
my_fprintf(STDERR, "my_strcut : malloc failed\n");
return (NULL);
}
clearstr(dest, my_strlen(str));
my_strcut_cpy(str, dest, cut, len);
return (dest);
}
char* xstrcpy(char *dest, const char *src, size_t num) {
unsigned int i = 0;
if(dest == NULL)
return dest;
if(src == NULL)
clearstr(dest, num);
num--;
for(i = 0;i < num;i++) {
if(!src[i])
break;
dest[i] = src[i];
}
dest[i] = 0;
return dest;
}
//
// GetNextPortPath
// Get the path in /dev that represents the next eligible port.
//
// Muchas gracias to Apple for this code.
//
kern_return_t TMSerialPort::GetNextPortPath() {
io_object_t portService;
kern_return_t kernResult = KERN_FAILURE;
clearstr(deviceFilePath);
// Keep iterating until successful
while (portService = IOIteratorNext(serialPortIterator)) {
CFTypeRef deviceFilePathAsCFString;
// Get the callout device's path (/dev/cu.xxxxx).
deviceFilePathAsCFString = IORegistryEntryCreateCFProperty(
portService,
CFSTR(kIOCalloutDeviceKey),
kCFAllocatorDefault,
0);
if (deviceFilePathAsCFString) {
Boolean result;
// Convert the path from CFString to C string
result = CFStringGetCString((CFStringRef)deviceFilePathAsCFString,
deviceFilePath,
sizeof(deviceFilePath),
kCFStringEncodingASCII);
CFRelease(deviceFilePathAsCFString);
if (result) {
kernResult = KERN_SUCCESS;
break;
}
}
// Release the io_service_t now that we are done with it.
(void) IOObjectRelease(portService);
}
return kernResult;
}
/*-----------------------------------------------
| expr_to_ir
+---------------------------------------------*/
struct irinfo *expr_to_ir(struct ast *subtree)
{
struct irinfo *left;
struct irinfo *right;
/* vars for dealing with loops */
struct flow *tflow;
struct ast *cond;
struct ast *thendo;
struct ast *elsedo;
struct ast *forinit;
struct ast *forupdate;
char elselabel[25]= "else";
char thenlabel[25]= "then";
char endlabel[25]= "end";
char testcondlabel[25]= "test";
struct ast *dstat;
struct decostat_list *dlist;
int i;
int tmpreg;
struct irinfo *tcresult= emalloc(sizeof(struct irinfo));
if(subtree == NULL)
{ printf("received a null subtree...\n");
return NULL;
}
else
{ printf("DEBUG: expr_to_ir: ENTERED with NON NULL subtree...\n");
}
/* figure out what type of node i'm looking at */
printf("\texpr_to_ir called with expr type: %d\n", subtree->nodetype);
switch(subtree->nodetype)
{
case DECL:
break;
case DECOSTAT_LIST:
printf("found a decostat_list...\n\n\n");
i=0;
dlist= (struct decostat_list *)subtree;
do
{ dstat= dlist->decostat;
printf("calling expr_to_ir from expr_to_ir\n");
left= expr_to_ir(dstat);
printf("dstat_list_element_%d\n", ++i);
}while( (dlist= dlist->next) != NULL);
tcresult->nodetype= left->nodetype;
tcresult->regnum= left->regnum;
return tcresult;
break;
case PARENTHESIZED_EXPR:
printf("found parenthsized expr... type of subtree->l: %d\n\n\n", subtree->l->nodetype);
left= expr_to_ir(subtree->l);
tcresult->nodetype= left->nodetype;
tcresult->regnum= left->regnum;
printf("DEBUG: PARENTHESIZED_EXPR returning tcresult nodetype %d and regnum %d\n",
tcresult->nodetype,
tcresult->regnum
);
return tcresult;
break;
case INTEGER_CONSTANT:
tcresult->nodetype= RVALUE;
tcresult->regnum= ++regnum;
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= LOADCONSTANT;
irlist->oprnd1= tcresult->regnum;
printf("DEBUG: loading constant: %d\n", (int)(long)((struct constant *)subtree)->value);
irlist->oprnd2= (int)(long)((struct constant *)subtree)->value;
return tcresult;
break;
case SIMPLE_DECLARATOR:
tcresult->nodetype= LVALUE;
tcresult->regnum= ++regnum;
printf("DEBUG: dealing with simple declarator, context clue is: %d\n", context_clue);
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
if(context_clue != 0)
{ irlist->ircode= LOADWORD;
printf("DEBUG: since context clue is %d, doing loadword...\n", context_clue);
}
else
{ irlist->ircode= LOADADDRESS;
printf("DEBUG: since context clue is %d, doing loadaddress...\n", context_clue);
}
irlist->oprnd1= tcresult->regnum;
irlist->symptr= (struct declarator *)subtree;
return tcresult;
break;
case OP_ASSIGNMENT:
printf("DEBUG: found an OP_ASSIGNMENT...\n\n\n");
left= expr_to_ir(subtree->l);
right= expr_to_ir(subtree->r);
if((left->nodetype == LVALUE) && (right->nodetype == RVALUE))
{ irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
/* add node for storewordindirect */
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= STOREWORDINDIRECT;
irlist->oprnd1= right->regnum;
irlist->oprnd2= left->regnum;
}
else if((left->nodetype == LVALUE) && (right->nodetype == LVALUE))
{ irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
/* add nodes for load/storewordindirect */
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= LOADWORDINDIRECT;
irlist->oprnd1= ++regnum;
irlist->oprnd2= right->regnum;
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= STOREWORDINDIRECT;
irlist->oprnd1= regnum;
irlist->oprnd2= left->regnum;
}
break;
case PLUS_SIGN:
context_clue= PLUS_SIGN;
printf("DEBUG: found an PLUS_SIGN...\n\n\n");
left= expr_to_ir(subtree->l);
right= expr_to_ir(subtree->r);
{ irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= ADD;
irlist->oprnd1= ++regnum;
irlist->oprnd2= left->regnum;
irlist->oprnd3= right->regnum;
tcresult->nodetype= RVALUE;
tcresult->regnum= irlist->oprnd1;
}
context_clue= 0;
return tcresult;
break;
case MINUS_SIGN:
context_clue= MINUS_SIGN;
printf("DEBUG: found a MINUS_SIGN...\n\n\n");
left= expr_to_ir(subtree->l);
right= expr_to_ir(subtree->r);
{ irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= SUBTRACT;
irlist->oprnd1= ++regnum;
irlist->oprnd2= left->regnum;
irlist->oprnd3= right->regnum;
tcresult->nodetype= RVALUE;
tcresult->regnum= irlist->oprnd1;
}
context_clue= 0;
return tcresult;
break;
case OP_REMAINDER:
context_clue= OP_REMAINDER;
printf("DEBUG: found an OP_REMAINDER...\n\n\n");
left= expr_to_ir(subtree->l);
right= expr_to_ir(subtree->r);
{ irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= REMAINDER;
irlist->oprnd1= ++regnum;
irlist->oprnd2= left->regnum;
irlist->oprnd3= right->regnum;
tcresult->nodetype= RVALUE;
tcresult->regnum= irlist->oprnd1;
}
context_clue= 0;
return tcresult;
break;
case POSTINCREMENT_EXPR:
context_clue= POSTINCREMENT_EXPR;
printf("DEBUG: found a POSTINCREMENT_EXPR...\n\n\n");
printf("\tDEBUG: subtree->l type: %d\n", subtree->l->nodetype);
left= expr_to_ir(subtree->l);
{ irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= ADD1;
tmpreg= ++regnum;
irlist->oprnd1= tmpreg;
irlist->oprnd2= left->regnum;
tcresult->nodetype= RVALUE;
tcresult->regnum= irlist->oprnd1;
context_clue= 0;
/* store result */
left= expr_to_ir(subtree->l);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= STOREWORDINDIRECT;
irlist->oprnd1= tmpreg;
irlist->oprnd2= left->regnum;
}
return tcresult;
break;
case POSTDECREMENT_EXPR:
context_clue= POSTDECREMENT_EXPR;
printf("DEBUG: found a POSTDECREMENT_EXPR...\n\n\n");
printf("\tDEBUG: subtree->l type: %d\n", subtree->l->nodetype);
left= expr_to_ir(subtree->l);
{ irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= SUB1;
tmpreg= ++regnum;
irlist->oprnd1= tmpreg;
irlist->oprnd2= left->regnum;
tcresult->nodetype= RVALUE;
tcresult->regnum= irlist->oprnd1;
context_clue= 0;
/* store result */
left= expr_to_ir(subtree->l);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= STOREWORDINDIRECT;
irlist->oprnd1= tmpreg;
irlist->oprnd2= left->regnum;
}
return tcresult;
break;
case IF_STATEMENT:
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
/* retrieve if statement components
+-----------------------------------*/
tflow= (struct flow *)subtree;
cond= tflow->cond;
thendo= tflow->thendo;
/* print C code to IR file.
+---------------------------*/
printf("DEBUG: cond type: %d\n", cond->nodetype);
printf("DEBUG: thendo type: %d\n", thendo->nodetype);
clearstr(tmpstr);
sprintf(tmpstr,"#");
indent(tmpstr);
sprintf(&tmpstr[strlen(tmpstr)], "if(");
print_expr(cond->l,tmpstr);
sprintf(&tmpstr[strlen(tmpstr)], ")\n");
fprintf(irout,tmpstr); clearstr(tmpstr);
/* Generate necessary labels
+----------------------------*/
sprintf(&elselabel[strlen(elselabel)], "%d", ++labelnum);
sprintf(&endlabel[strlen(endlabel)], "%d", ++labelnum);
printf("\t\tDEBUG: type of condition: %d\n", cond->l->nodetype);
printf("\t\tDEBUG: type of thendo: %d\n", thendo->nodetype);
/* create node for conditional statement
+-----------------------------------------*/
expr_to_ir(cond->l);
sprintf(&thenlabel[strlen(thenlabel)], "%d", labelnum);
/* create node for empty else block
+-----------------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, elselabel);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= JUMP;
strcpy(irlist->label, endlabel);
/* create nodes for then block */
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, thenlabel);
expr_to_ir(thendo);
/* create node for end block
+-----------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, endlabel);
break;
case IF_ELSE_STATEMENT:
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
/* retrieve if statement components
+-----------------------------------*/
tflow= (struct flow *)subtree;
cond= tflow->cond;
thendo= tflow->thendo;
elsedo= tflow->elsedo;
/* Generate necessary labels
+----------------------------*/
sprintf(&elselabel[strlen(elselabel)], "%d", ++labelnum);
sprintf(&endlabel[strlen(endlabel)], "%d", ++labelnum);
printf("\t\tDEBUG: type of condition: %d\n", cond->l->nodetype);
printf("\t\tDEBUG: type of thendo: %d\n", thendo->nodetype);
/* create node for conditional statement
+-----------------------------------------*/
expr_to_ir(cond->l);
sprintf(&thenlabel[strlen(thenlabel)], "%d", labelnum);
/* create nodes for else block
+------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, elselabel);
expr_to_ir(elsedo);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= JUMP;
strcpy(irlist->label, endlabel);
/* create nodes for then block */
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, thenlabel);
expr_to_ir(thendo);
/* create node for end block
+-----------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, endlabel);
break;
case FOR_STATEMENT:
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
/* retrieve for statement components
+-----------------------------------*/
tflow = (struct flow *)subtree;
forinit = tflow->forinit;
cond = tflow->cond;
forupdate = tflow->forupdate;
thendo = tflow->thendo;
/* Generate necessary labels
+----------------------------*/
sprintf(elselabel, "forelse%d", ++labelnum);
sprintf(&thenlabel[strlen(thenlabel)], "%d", ++labelnum);
sprintf(&endlabel[strlen(endlabel)], "%d", ++labelnum);
sprintf(&testcondlabel[strlen(testcondlabel)], "%d", ++labelnum);
/*
printf("\t\tDEBUG: type of forinit: %d\n", forinit->l->nodetype);
printf("\t\tDEBUG: type of condition: %d\n", cond->l->nodetype);
printf("\t\tDEBUG: type of thendo: %d\n", thendo->nodetype);
printf("\t\tDEBUG: type of forupdate: %d\n", forupdate->l->nodetype);
*/
/* create nodes for init statement
+-----------------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= COMMENT;
strncpy(irlist->label, "For Loop Initialization",49);
if(forinit != NULL)
{ expr_to_ir(forinit->l);
}
/* create nodes for conditional statement
+-----------------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= COMMENT;
strncpy(irlist->label, "For Loop Test Condition",49);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, testcondlabel);
forjump= atoi(&thenlabel[strlen(thenlabel)-1]);
if(cond != NULL)
{ expr_to_ir(cond->l);
}
forjump= 0;
/* create node for empty else block
+-----------------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, elselabel);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= JUMP;
strcpy(irlist->label, endlabel);
/* create nodes for then block
+--------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, thenlabel);
if(thendo != NULL)
{ expr_to_ir(thendo);
}
/* create nodes for for loop update
+-----------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= COMMENT;
strncpy(irlist->label, "For Loop Update Statement",49);
if(forupdate != NULL)
{ expr_to_ir(forupdate->l);
}
/* jump back to test condition
+-------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= JUMP;
strcpy(irlist->label, testcondlabel);
/* create node for end block
+-----------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, endlabel);
break;
case WHILE_STATEMENT:
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
/* retrieve for statement components
+-----------------------------------*/
tflow = (struct flow *)subtree;
cond = tflow->cond;
thendo = tflow->thendo;
/* Generate necessary labels
+----------------------------*/
sprintf(elselabel, "whileelse%d", ++labelnum);
sprintf(&thenlabel[strlen(thenlabel)], "%d", ++labelnum);
sprintf(&endlabel[strlen(endlabel)], "%d", ++labelnum);
sprintf(&testcondlabel[strlen(testcondlabel)], "%d", ++labelnum);
/* create nodes for conditional statement
+-----------------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= COMMENT;
strncpy(irlist->label, "WHILE Loop Test Condition",49);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, testcondlabel);
forjump= atoi(&thenlabel[strlen(thenlabel)-1]);
if(cond != NULL)
{ expr_to_ir(cond->l);
}
forjump= 0;
/* create node for empty else block
+-----------------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, elselabel);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= JUMP;
strcpy(irlist->label, endlabel);
/* create nodes for then block
+--------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, thenlabel);
if(thendo != NULL)
{ expr_to_ir(thendo);
}
/* jump back to test condition
+-------------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= JUMP;
strcpy(irlist->label, testcondlabel);
/* create node for end block
+-----------------------------*/
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= MIPSLABEL;
strcpy(irlist->label, endlabel);
break;
case RW_BREAK:
printf("DEBUG: found a RW_BREAK...\n\n\n");
;
char tlabel[50];
{ irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
while( (strstr(irlist->label,"forelse")) == NULL && (irlist != NULL))
{ irlist=irlist->prev;
printf("rewinding from irnode %d\n", irlist->sid);
}
if(irlist != NULL)
{ strcpy(tlabel,irlist->label);
printf("tlabel set to: %s\n", tlabel);
}
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= JUMP;
strcpy(irlist->label,tlabel);
}
break;
case OP_EQUALITY:
printf("DEBUG: found a OP_EQUALITY...\n\n\n");
context_clue= OP_EQUALITY;
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
left = expr_to_ir(subtree->l);
right = expr_to_ir(subtree->r);
printf("DEBUG: expr_to_ir(): left regnum: %d\n", left->regnum);
printf("DEBUG: expr_to_ir(): right regnum: %d\n", right->regnum);
char eqthenlabel[25]= "then";
sprintf(&eqthenlabel[strlen(eqthenlabel)], "%d", ++labelnum);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= BRANCH_EQ;
irlist->oprnd1= left->regnum;
irlist->oprnd2= right->regnum;
strcpy(irlist->label, eqthenlabel);
context_clue= 0;
tcresult->nodetype= RVALUE;
tcresult->regnum= irlist->oprnd1;
return tcresult;
break;
case GREATER_THAN_SYMBOL:
context_clue= CONDITIONAL_STATEMENT;
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
printf("DEBUG: expr_to_ir(): received a greater than symbol....\n");
left = expr_to_ir(subtree->l);
right = expr_to_ir(subtree->r);
char gtthenlabel[25]= "then";
sprintf(>thenlabel[strlen(gtthenlabel)], "%d", (forjump > 0)? forjump : ++labelnum);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= BRANCH_GT;
irlist->oprnd1= left->regnum;
irlist->oprnd2= right->regnum;
strcpy(irlist->label, gtthenlabel);
context_clue= 0;
break;
case OP_RELATIONAL_GTE:
context_clue= CONDITIONAL_STATEMENT;
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
printf("DEBUG: expr_to_ir(): received a greater than symbol....\n");
left = expr_to_ir(subtree->l);
right = expr_to_ir(subtree->r);
char gtethenlabel[25]= "then";
sprintf(>ethenlabel[strlen(gtethenlabel)], "%d", (forjump > 0)? forjump : ++labelnum);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= BRANCH_GTE;
irlist->oprnd1= left->regnum;
irlist->oprnd2= right->regnum;
strcpy(irlist->label, gtethenlabel);
context_clue= 0;
break;
case OP_RELATIONAL_LT:
context_clue= OP_RELATIONAL_LT;
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
printf("DEBUG: expr_to_ir(): received a greater than symbol....\n");
left = expr_to_ir(subtree->l);
right = expr_to_ir(subtree->r);
char ltthenlabel[25]= "then";
sprintf(<thenlabel[strlen(ltthenlabel)], "%d", (forjump > 0)? forjump : ++labelnum);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= BRANCH_LT;
irlist->oprnd1= left->regnum;
irlist->oprnd2= right->regnum;
strcpy(irlist->label, ltthenlabel);
context_clue= 0;
break;
case OP_RELATIONAL_LTE:
context_clue= OP_RELATIONAL_LTE;
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
printf("DEBUG: expr_to_ir(): received a greater than symbol....\n");
left = expr_to_ir(subtree->l);
right = expr_to_ir(subtree->r);
char ltethenlabel[25]= "then";
sprintf(<ethenlabel[strlen(ltethenlabel)], "%d", (forjump > 0)? forjump : ++labelnum);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= BRANCH_LTE;
irlist->oprnd1= left->regnum;
irlist->oprnd2= right->regnum;
strcpy(irlist->label, ltethenlabel);
context_clue= 0;
break;
case COMPOUND_STATEMENT:
printf("DEBUG: expr_to_ir() called with compound statement ...\n");
printf("\tDEBUG: subtree type: %d\n", subtree->nodetype);
compound_to_ir(subtree);
break;
case FUNCTION_CALL:
;
char funcname[40];
struct declarator *d= (struct declarator *)subtree->l;
struct parameter_list *plist;
plist=d->plist;
if(d->nodetype == SIMPLE_DECLARATOR)
{ strcpy(funcname,d->id);
}
else
{ strcpy(funcname,d->adeclarator->id);
}
printf("DEBUG: expr_to_ir FUNCTION CALL: %s\n", funcname);
/* If this is a built-in function...
+-----------------------------------------*/
if( (!strcmp(funcname,"printint")) ||
(!strcmp(funcname,"printstring")) ||
(!strcmp(funcname,"readint"))
)
{
/* printint function...
+-------------------------*/
if(! strcmp(funcname,"printint"))
{ printf("printint invoked...\n");
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
/* add nodes for printint */
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= PRINTINT;
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= LOADWORD;
irlist->oprnd1= SYSCALL_ARG_REG;
irlist->symptr= (struct declarator *)subtree->r->l;
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= SYSCALL;
}
/* printstring function...
+--------------------------*/
if(! strcmp(funcname,"printstring"))
{
/* Retrieve parameter
+----------------------*/
struct constant *k= (struct constant *)subtree->r->l;
char *param= k->value;
printf("param: %s (%ld)\n", param, param);
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
/* add nodes for printstring */
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= PRINTSTRING;
irlist->oprnd1= ++regnum;
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= CREATE_STRINGVAR;
irlist->symptr= (struct declarator *)param;
sprintf(irlist->label,"stringvar%d", ++stringvarnum);
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= SYSCALL;
}
/* readint function...
+--------------------------*/
if(! strcmp(funcname,"readint"))
{
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
/* add nodes for readint */
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= READINT;
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= SYSCALL;
/* add nodes for result storage */
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= LOADADDRESS;
irlist->oprnd1= ++regnum;
irlist->symptr= (struct declarator *)subtree->r->l;
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= STOREWORDINDIRECT;
irlist->oprnd1= SYSCALL_REG;
irlist->oprnd2= regnum;
irlist->symptr= (struct declarator *)subtree->r->l;
}
}
/* If it's not a builtin function
+---------------------------------*/
else
{ printf("function '%s' has been called...\n",funcname);
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
/* add nodes for printint */
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= FUNCTIONCALL;
strcpy(irlist->label,"_VAR_");
strcat(irlist->label,funcname);
irlist->symptr= d;
}
break;
default:
printf("DEBUG: expr_to_ir: NOT SURE WHAT TO DO WITH TYPE: %d\n", subtree->nodetype);
break;
}
return tcresult;
}
/*-----------------------------------------------
| compound_to_ir
+---------------------------------------------*/
void compound_to_ir(struct ast *cstmt)
{ char genstr[TMPSTRSZ];
struct ast *decostat;
struct decostat_list *dlist= (struct decostat_list *) cstmt->l;
struct flow *tflow;
struct ast *cond;
struct ast *thendo;
printf("DEBUG: compound_to_ir called with nodetype: %d\n", cstmt->nodetype);
sprintf(&genstr[strlen(genstr)],"#");
indent(genstr);
sprintf(&genstr[strlen(genstr)],"{\n");
fprintf(irout,"%s",genstr); clearstr(genstr);
++indent_count;
do
{ decostat= dlist->decostat;
/* Generate IR node
+--------------------*/
regnum=0; /* reset register count to 0 */
printf("c2ir calling e2ir...\n");
expr_to_ir(decostat);
/* write C statement to file
+----------------------------*/
clearstr(genstr);
sprintf(genstr,"#");
indent(genstr);
if(decostat->nodetype == COMPOUND_STATEMENT)
{ clearstr(genstr);
compound_to_ir(decostat);
}
else
{ print_expr(dlist->decostat,genstr);
}
/* no semicolons after compound statements */
if( (dlist->decostat->nodetype == COMPOUND_STATEMENT) ||
( (dlist->decostat->nodetype == LABELED_STATEMENT) &&
(dlist->decostat->r->nodetype == COMPOUND_STATEMENT)
)
)
{ fprintf(irout,"\n\n");
}
else
{ fprintf(irout,"%s;\n",genstr); clearstr(genstr);
}
fprintf(irout,"%s",genstr); clearstr(genstr);
/* write IR nodes to file
+----------------------------*/
statement_end_sid= irnodenum;
print_irnode_sids(statement_begin_sid,statement_end_sid);
statement_begin_sid= ++statement_end_sid;
fprintf(irout,"\n\n\n");
} while( (dlist= dlist->next) != NULL);
--indent_count;
sprintf(&genstr[strlen(genstr)],"#");
indent(genstr);
sprintf(&genstr[strlen(genstr)],"}\n\n\n");
fprintf(irout,"%s",genstr); clearstr(genstr);
}
/*-----------------------------------------------
| generate_ir
+---------------------------------------------*/
void generate_ir(struct ast *parse_tree)
{
struct decl *tdecl;
struct function_def *funcdef;
struct declarator *d;
struct ast *decostat;
char genstr[TMPSTRSZ];
struct symtabl *curr_symtab= global_top_level;
struct irnode *irlist;
char symtab_name[100];
/* initialize ircodenames
+--------------------------*/
{ ircodenames[0] = "UNINITIALIZED";
ircodenames[100]= "BEGINPROC";
ircodenames[101]= "LOADADDRESS";
ircodenames[102]= "LOADCONSTANT";
ircodenames[103]= "STOREWORDINDIRECT";
ircodenames[104]= "LOADWORDINDIRECT";
ircodenames[105]= "ENDPROC";
ircodenames[106]= "PRINTINT";
ircodenames[107]= "SYSCALL";
ircodenames[108]= "LOADWORD";
ircodenames[109]= "MIPSLABEL";
ircodenames[110]= "BRANCH_GT";
ircodenames[111]= "BRANCH_LT";
ircodenames[112]= "JUMP";
ircodenames[113]= "COMMENT";
ircodenames[114]= "ADD";
ircodenames[115]= "ADD1";
ircodenames[116]= "PRINTSTRING";
ircodenames[117]= "CREATE_STRINGVAR";
ircodenames[118]= "READINT";
ircodenames[119]= "BRANCH_GTE";
ircodenames[120]= "BRANCH_LTE";
ircodenames[121]= "BRANCH_EQ";
ircodenames[122]= "REMAINDER";
ircodenames[123]= "SUBTRACT";
ircodenames[124]= "SUB1";
ircodenames[125]= "FUNCTIONCALL";
};
/* initialize irlist_front and irlist.
+---------------------------------------*/
irlist_front= emalloc(sizeof(struct irnode));
irlist_front->prev=NULL;
irlist_front->next=NULL;
irlist_front->sid= ++irnodenum;
irlist= irlist_front;
/* initialize label num, used to avoid label name
| collisions.
+------------------------------------------------*/
labelnum=0;
/* Open IR output file
+-------------------------*/
strcpy(irfname,"out.ir"); /* update later to create an IR file
based on input filename. */
irout= fopen(irfname,"w+");
if(irout == NULL)
{ printf("Error opening IR output file: %s\n", irfname);
}
/* generate_ir() accepts the root of parse tree as its param.
| The root of the parse tree is a *tld_list so we'll cast the param
| into a *tld_list.
+--------------------------------------------------------------------*/
struct tld_list *tldlist= (struct tld_list *)parse_tree;
/* A tld_list has a series of tld nodes; each node pointing to either
| a decl or a funcdef. We'll create and populate symtabs as We cycle
| through all of the TLD's in a do-while loop.
+---------------------------------------------------------------------*/
do
{ curr_symtab= global_top_level; /* always start with the global symtab */
/*--------------------------------------------+
| if TLD is a DECL
+---------------------------------------------*/
if(tldlist->tld->datatype == DECL)
{ tdecl= (struct decl *)tldlist->tld->d;
print_expr((struct ast *)tdecl,genstr);
fprintf(irout,"# %s\n", genstr);
clearstr(genstr);
}
/*--------------------------------------------+
| if TLD is a FUNCTION_DEFINITION
+---------------------------------------------*/
if(tldlist->tld->datatype == FUNCTION_DEFINITION)
{
/* retrieve function definition */
struct function_def *funcdef= (struct function_def *)tldlist->tld->f;
/* a function defintion is composed of a
| fuction_defspec and a compound statement.
| A compound statement has a decostat_list.
+---------------------------------------------*/
struct function_defspec *fdspec= funcdef->fdspec;
struct ast *cstmt= funcdef->cstmt;
struct decostat_list *dlist;
/*
| fdspec contains the function declarator.
+-------------------------------------------*/
struct declarator *d= fdspec->d;
printf("\n\n\nDEBUG: generate_mips() encountered a function definition: %s\n", print_declarator_id(d));
/* print function return type */
fprintf(irout,"\n\n# %s ", print_type(fdspec->typespec));
/* Retrieve and print function name from this declarator,
| considering that pointers may be present. Also grab
| the parameter_list.
+------------------------------------------------------------*/
struct parameter_list *plist;
if(d->nodetype == POINTER_DECLARATOR)
{ while(d->next)
{ d= d->next;
sprintf(&genstr[strlen(genstr)],"*");
}
plist= d->plist;
if(!d->id)
{ d= d->adeclarator;
}
}
else
{ d= d->adeclarator;
plist= fdspec->d->plist;
}
char *funcname= d->id;
strcpy(symtab_name,funcname);
strcat(symtab_name,"_funcdef");
/* Generate IR node for function
+----------------------------------*/
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
if(irnodenum != 1)
{
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
}
printf("\tDEBUG: current irnode sid: %d\n", irlist->sid);
irlist->ircode= BEGINPROC;
irlist->symptr= fdspec->d;
irlist->sid= (irnodenum == 1) ? 1 : ++irnodenum;
sprintf(&genstr[strlen(genstr)]," %s(", funcname);
fprintf(irout,"%s", genstr); clearstr(genstr);
/* print parameter list
+-------------------------*/
print_parameter_list(plist,genstr);
sprintf(&genstr[strlen(genstr)],")");
sprintf(&genstr[strlen(genstr)],"\n");
fprintf(irout,"%s",genstr); clearstr(genstr);
/* print IR for entering function
+----------------------------------*/
statement_begin_sid= irnodenum + 1;
print_irnode_sids(irlist->sid,irlist->sid); /* DEBUG */
fprintf(irout,"\n\n");
/* Generate IR for compound statement block
+-------------------------------------------*/
compound_to_ir(cstmt);
/* Generate endproc node for function.
+---------------------------------------*/
printf("DEBUG: about to add ENDPROC node for function '%s'\n", print_declarator_id(irlist->symptr));
irlist= irlist_front;
while(irlist->next != NULL)
{ irlist= irlist->next;
}
irlist->next= emalloc(sizeof(struct irnode));
irlist->next->prev= irlist;
irlist= irlist->next;
irlist->sid= ++irnodenum;
irlist->ircode= ENDPROC;
irlist->symptr= fdspec->d;
print_irnode_sids(irlist->sid,irlist->sid); /* DEBUG */
}
}while( (tldlist= tldlist->next) != NULL );
fclose(irout);
printf("EXITING\n");
print_irnodes();
}