extern void do_endwhile(void)
{
if (in_false_if())
{
do_endif(0);
input_unmark();
#ifdef DEBUG_WHILE
if (debugging)
{
outputs("//endwhile:");
outputd(curline());
outputs(",");
outputs(curfile());
outputs("\\\\");
}
#endif
out_at(curline(), curfile());
}
else
{
do_endif(0);
input_recover();
input_mark();
do_if(0);
}
}
/* start simulation, program loaded, processor precise state initialized */
void
sim_main(void)
{
fprintf(stderr, "sim: ** starting *pipe* functional simulation **\n");
/* must have natural byte/word ordering */
if (sim_swap_bytes || sim_swap_words)
fatal("sim: *pipe* functional simulation cannot swap bytes or words");
/* set up initial default next PC */
regs.regs_NPC = regs.regs_PC + sizeof(md_inst_t);
/* maintain $r0 semantics */
regs.regs_R[MD_REG_ZERO] = 0;
fd.PC = regs.regs_PC - sizeof(md_inst_t);
while (TRUE)
{
//handle the pipeline in reverse so that the instruction could be handled in ascending order
sim_num_insn++;
do_stall();
do_wb();
do_mem();
do_ex();
do_id();
do_if();
dump_pipeline();
}
}
/* start simulation, program loaded, processor precise state initialized */
void
sim_main(void)
{
fprintf(stderr, "sim: ** starting *pipe* functional simulation **\n");
/* must have natural byte/word ordering */
if (sim_swap_bytes || sim_swap_words)
fatal("sim: *pipe* functional simulation cannot swap bytes or words");
/* set up initial default next PC */
/* maintain $r0 semantics */
regs.regs_R[MD_REG_ZERO] = 0;
regs.regs_PC -= sizeof(md_inst_t);
while (TRUE)
{
do_if();
do_wb();
do_id();
do_ex();
do_mem();
print_env();
write_buf();
#ifndef NO_INSN_COUNT
sim_num_insn++;
#endif /* !NO_INSN_COUNT */
}
}
extern void do_while (void)
{
input_mark();
do_if(0);
}
extern void do_sharp (void)
{
char *w;
char c;
w = read_ctrl();
if (strcmp(w, "ifdef") == 0)
{
do_ifdef(1);
}
else if (strcmp(w, "ifndef") == 0)
{
do_ifndef(1);
}
else if (strcmp(w, "if") == 0)
{
do_if(1);
}
else if (strcmp(w, "else") == 0)
{
do_else(1);
}
else if (strcmp(w, "elif") == 0)
{
do_elif(1);
}
else if (strcmp(w, "endif") == 0)
{
do_endif(1);
}
else if (strcmp(w, "include") == 0)
{
do_include(1);
}
else if (strcmp(w, "define") == 0)
{
do_define(1, 0);
}
else if (strcmp(w, "undef") == 0)
{
do_undef(1);
}
else if (strcmp(w, "line") == 0)
{
do_line();
}
else if (strcmp(w, "pragma") == 0)
{
do_pragma();
}
else if (strcmp(w, "") == 0)
{}
else
{
int isnull;
isnull = 0;
if (strcmp(w, "") == 0)
{
c = Get();
if (c != '\n')
{
Push(c);
}
else
{
isnull = 1;
}
}
if (!isnull && !in_false_if())
{
err_head();
fprintf(stderr, "unknown control `%s'\n", w);
flush_sharp_line();
}
}
maybe_print('\n');
os_free(w);
}
static Token next_token (void)
{
Token token;
restart:
outbuffer_off();
outbuffer_on();
token.startindex = out.buffindex;
{
int c = next_char();
switch (c) {
case EOF:
/* EOF */
token.type = eof;
goto done;
case ' ': case '\v': case '\t': case '\n':
/* whitespace, ignore */
goto restart;
case '\\':
if (peek_char()=='\n') {
/* backslash newline, ignore */
next_char();
goto restart;
}
goto separator;
case '/':
if (peek_char() == '*') {
/* Comment */
next_char();
while (1) {
c = next_char();
if (c==EOF) {
fprintf(stderr,"Unfinished comment\n");
break;
}
if ((c=='*') && (peek_char()=='/')) {
next_char();
break;
}
}
goto restart;
}
goto separator;
case '*':
if (peek_char() == '/')
fprintf(stderr,"End of comment outside comment in line %lu\n",input_line);
goto separator;
case '#':
/* preprocessor directive */
{
char* line = next_line();
if (line) {
char* old_line = line;
line = concat2("#",line);
xfree(old_line);
} else
line = concat1("#");
while (line[strlen(line)-1] == '\\') {
char* continuation_line = next_line();
line[strlen(line)-1] = '\0';
if (continuation_line) {
char* old_line = line;
line = concat2(line,continuation_line);
xfree(old_line);
xfree(continuation_line);
}
}
{
const char* condition;
long line_directive;
if ((condition = is_if(line)) != NULL) {
do_if(condition);
} else if (is_else(line)) {
do_else();
line_repeat_else();
} else if ((condition = is_elif(line)) != NULL) {
do_elif(condition);
line_repeat_else();
} else if (is_endif(line)) {
do_endif();
line_repeat_endif();
} else if ((line_directive = decode_line_directive(line)) >= 0)
input_line = line_directive;
#ifdef SPLIT_OBJECT_INITIALIZATIONS
else {
/* Replace "var object foo = ..." with "var object foo; foo = ..."
in macros as well. */
if (out.buffindex < MAXHEADERLEN) {
uintB* p;
out.buffer[out.buffindex] = '\0';
for (p = &out.buffer[token.startindex]; ; p++) {
p = (uintB*) strstr((char*)p,"var ");
if (p == NULL)
break;
if ((strncmp((char*)p,"var object ",
strlen("var object "))==0
|| strncmp((char*)p,"var chart ",
strlen("var chart "))==0)
&& (p[-1] == ' ' || p[-1] == '{')) {
if (strncmp((char*)p,"var object ",
strlen("var object "))==0)
p += strlen("var object ");
else if (strncmp((char*)p,"var chart ",
strlen("var chart "))==0)
p += strlen("var chart ");
{ uintB* q = p;
if ((*q >= 'A' && *q <= 'Z')
|| (*q >= 'a' && *q <= 'z')
|| *q == '_') {
do q++;
while ((*q >= 'A' && *q <= 'Z')
|| (*q >= 'a' && *q <= 'z')
|| (*q >= '0' && *q <= '9')
|| *q == '_');
while (*q == ' ')
q++;
if (*q == '=') {
uintL insertlen = 2+(q-p);
if (out.buffindex + insertlen < MAXHEADERLEN) {
memmove(q+insertlen,q,
&out.buffer[out.buffindex]-q+1);
q[0] = ';'; q[1] = ' ';
memcpy(q+2, p, q-p);
out.buffindex += insertlen;
}
}
}
}
}
}
}
}
#endif
}
xfree(line);
}
goto separator;
case '.':
c = peek_char();
if (!(((c>='0') && (c<='9')) || (c=='.')))
goto separator;
case '0': case '1': case '2': case '3': case '4':
case '5': case '6': case '7': case '8': case '9':
/* Digit. Continue reading as long as alphanumeric or '.'. */
while (1) {
c = peek_char();
if (((c>='0') && (c<='9')) || ((c>='A') && (c<='Z')) || ((c>='a') && (c<='z')) || (c=='.'))
next_char();
else
break;
}
token.type = number;
goto done;
case '\'':
/* Character constant */
while (1) {
c = next_char();
if (c==EOF) {
fprintf(stderr,"Unterminated character constant\n");
break;
}
if (c=='\'')
break;
if (c=='\\')
c = next_char();
}
token.type = charconst;
goto done;
case '\"':
/* String constant */
while (1) {
c = next_char();
if (c==EOF) {
fprintf(stderr,"Unterminated string constant\n");
break;
}
if (c=='\"')
break;
if (c=='\\')
c = next_char();
}
token.type = stringconst;
goto done;
case 'A': case 'B': case 'C': case 'D': case 'E': case 'F':
case 'G': case 'H': case 'I': case 'J': case 'K': case 'L':
case 'M': case 'N': case 'O': case 'P': case 'Q': case 'R':
case 'S': case 'T': case 'U': case 'V': case 'W': case 'X':
case 'Y': case 'Z':
case 'a': case 'b': case 'c': case 'd': case 'e': case 'f':
case 'g': case 'h': case 'i': case 'j': case 'k': case 'l':
case 'm': case 'n': case 'o': case 'p': case 'q': case 'r':
case 's': case 't': case 'u': case 'v': case 'w': case 'x':
case 'y': case 'z':
case '_':
/* Identifier. */
while (1) {
c = peek_char();
if (((c>='0') && (c<='9')) || ((c>='A') && (c<='Z')) || ((c>='a') && (c<='z')) || (c=='_'))
next_char();
else
break;
}
token.type = ident;
goto done;
default:
separator:
token.type = sep;
token.ch = c;
goto done;
}
}
done:
token.endindex = out.buffindex;
return token;
}