int term_print(FILE *outstream, struct term *t)
{
if(!t)
return -1;
switch(t->type) {
case TYPE_VAR:
if(0 <= fprintf(outstream, "%.*s", VAR_LEN, t->var))
break;
return -1;
case TYPE_LAMBDA:
if(0 <= fprintf(outstream, "\\%.*s", VAR_LEN, t->lambda.var))
if(0 <= fprintf(outstream, "."))
if(0 <= term_print(outstream, t->lambda.body))
break;
return -1;
case TYPE_APPL:
if(0 <= fprintf(outstream, "("))
if(0 <= term_print(outstream, t->appl.fun))
if(0 <= fprintf(outstream, " "))
if(0 <= term_print(outstream, t->appl.arg))
if(0 <= fprintf(outstream, ")"))
break;
return -1;
}
return 0;
}
int mm_init(multiboot_info_t *boot_info) {
if (!(boot_info->flags & MULTIBOOT_INFO_MEMORY)) {
term_print("Boot info memory entries invalid, bailing out\n");
return -1;
}
term_printf("Upper memory %dk\n", boot_info->mem_upper);
term_printf("Lower memory %dk\n", boot_info->mem_lower);
if (!(boot_info->flags & MULTIBOOT_INFO_MEM_MAP)) {
term_print("Boot info mem map invalid, bailing out\n");
return -1;
}
multiboot_memory_map_t *mmap = (void *)boot_info->mmap_addr;
term_print("Memory map:\n");
while ((multiboot_uint32_t)mmap < boot_info->mmap_addr + boot_info->mmap_length) {
const char *type =
mmap->type == MULTIBOOT_MEMORY_AVAILABLE ? "Available" : "Reserved ";
/*
* These are technically 64-bit values, so we need to convert them before passing
* them to printf
*/
uint32_t start = mmap->addr;
uint32_t len = mmap->len;
term_printf(" %s [0x%lx - 0x%lx]\n", type, start, start + len);
mmap = (void *)((uintptr_t)mmap + mmap->size + 4);
}
return 0;
}
void kern_main(multiboot_info_t *boot_info) {
term_clear();
term_color(TERM_GREEN, TERM_BLACK);
term_print("Booting\n");
term_print("Initializing memory manager\n");
if (mm_init(boot_info)) {
term_print("Failed to initialize memory manager\n");
return;
}
com_init();
com_print(COM1, "Hello COM1!\n");
log_info("This is a logging test!");
return;
}
/** Connect to server. */
void cmd_connect(char *x)
{
/* Variables. */
char *server, *nick;
if (strlen(x) < 1)
{
term_print("* No server address specified\n");
return;
}
server = x;
nick = strpbrk(x, " ");
if (nick)
{
while (strlen(nick) > 0 && nick[0] == ' ')
{
nick[0] = '\0';
nick = &nick[1];
}
if (strlen(nick) > 0) set_nick(nick);
}
term_mode = TERM_MODE_CLIENT;
term_set_server_addr(server);
term_client_init();
}
void *__server(void *ptr)
{
t_context *C=ctx_get();
char msg[30];
if(!server_init)
{
socket_connect(C->server->socket,9901);
server_init=1;
sprintf(msg,"listening on port %d",C->server->socket->portno);
term_print(C->term,msg);
if(C->app->off_screen)
{
printf("listening on port %d\n",C->server->socket->portno);
}
}
else
{
socket_listen(C->server->socket);
if(C->app->off_screen)
{
printf("waiting for connection");
}
}
return NULL;
}
int term_printf(const char *format, ...) {
/* This is a hack. Should probably be able to print directly to the term. */
char buf[256];
va_list ap;
va_start(ap, format);
int rv = vsnprintf(buf, sizeof(buf), format, ap);
term_print(buf);
va_end(ap);
return rv;
}
void term_log(char *fmt, ...)
{
t_context *C = ctx_get();
char msg[40];
va_list ap;
va_start(ap,fmt);
vsprintf(msg,fmt,ap);
va_end(ap);
term_print(C->term,msg);
}
void plug_warning(t_plug *dst_plug,t_plug *src_plug)
{
t_context *C=ctx_get();
char msg[40];
char *src_plug_type=data_name_get(src_plug->data_type);
char *dst_plug_type=data_name_get(dst_plug->data_type);
sprintf(msg,"%d(%s)(%s)-(%s)(%s)",C->app->frame,src_plug->name,src_plug_type,dst_plug->name,dst_plug_type);
term_print(C->term,msg);
}
/** Help-command. */
void cmd_help(char *x)
{
term_print("\n"
"* HIP GUI terminal help:\n"
"* help - Prints this help.\n"
"* exec - Show application execute dialog.\n"
"* server [nick] - Create new server. Close old server/client\n"
" automatically. Nick is optional.\n"
"* connect server [nick]\n"
"* - Connect to server. Close old server/client\n"
" automatically. Nick is optional.\n"
"\n");
}
void obj_add(const char *object_name,int tot_vert,int tot_face,int tot_quad,int tot_tri)
{
//printf("adding object:%s\n",object_name);
t_context *C=ctx_get();
term_print(C->term,"+ obj");
t_obj *obj=obj_new(object_name);
obj->tot_vert=tot_vert;
obj->tot_face=tot_face;
obj->tot_quad=tot_quad;
obj->tot_tri=tot_tri;
if(tot_vert) obj->verts=(float *)malloc(sizeof(float)*obj->tot_vert*3);
if(tot_tri) obj->tris=(int *)malloc(sizeof(int)*obj->tot_tri*3);
if(tot_quad) obj->quads=(int *)malloc(sizeof(int)*obj->tot_quad*4);
lst_add(OBJECTS,obj,"obj");
}
/**
Execute command.
*/
void term_exec_command(char *cmd)
{
/* Variables. */
int i;
int k;
char b = 0;
/* Check empty command. */
if (strlen(cmd) < 1)
{
return;
}
/* Find space. */
for (k = 0;
cmd[k] != '\0' && cmd[k] != ' ';
k++);
cmd[k] = '\0';
k++;
/* Compare commands. */
for (i = 0; cmds[i].func != 0; i++)
{
if (strcmp(cmd, cmds[i].cmd) == 0)
{
cmds[i].func(&cmd[k]);
b = 1;
break;
}
}
/* If command not found. */
if (!b)
{
term_print("* Invalid command.\n");
}
/* Return. */
return;
}
void isr_handler(registers_t regs) {
term_print("Recieved interrupt!\n");
}
void bios_boot_demo(void)
{
VDP_clearPlan(VDP_PLAN_A, 0);
VDP_clearPlan(VDP_PLAN_B, 0);
VDP_setHInterrupt(0);
term_print(" ___ ___ ___ ___ ___ ___ ___ ___ ___", 1);
term_print(" |___ |__ | _ |___| | _ |__ |\\ | |__ |___ | |___ ", 1);
term_print(" ___| |___ |___| | | |___| |___ | \\| |___ ___| | ___|", 1);
term_print("", 20);
term_print(" Entry Vector 0x202", 2);
term_print(" CSHBIOS(C)2016 Computer Science House", 2);
term_print(" MD-VA6 BOOT ROM Revision 3", 30);
term_print("", 0);
term_print(" CPU1 : Motorola 68000 7.6MHz", 2);
term_print(" Speed : 7.61 MHz", 2);
term_print("", 0);
term_print(" CPU2 : Zilog Z80 3.8MHz", 2);
term_print(" Speed : 3.80 MHz", 60);
term_print("", 0);
term_print(" Press DEL to run Setup", 0);
term_print(" Press <F8> for BBS POPUP", 170);
term_print("", 0);
term_print(" SRAM Asynchronous 2 x 65256 (64k x 8), single channel, parallel", 16);
term_print(" Checking SRAM...", 60);
term_print(" 8K OK", 7);
term_print(" 16K OK", 7);
term_print(" 24K OK", 7);
term_print(" 32K OK", 7);
term_print(" 40K OK", 7);
term_print(" 48K OK", 7);
term_print(" 56K OK", 7);
term_print(" 64K OK", 60);
term_print("", 0);
term_print(" VDP : Sega 315-5313 (Yamaha YM7101)", 2);
term_print(" Speed: 56MHz", 2);
term_print(" VRAM: 64K Serial Out Parallel Load DRAM", 2);
term_print(" CRAM: 64 x 9", 2);
term_print(" TMSS Enabled", 1);
term_print("", 60);
term_print(" 0xC00000 : Data Port", 20);
term_print(" 0xC00004 : Control Port", 20);
term_print(" 0xC00008 : H/V counter", 20);
term_print(" 0xC00011 : SN76489", 20);
term_print(" 0xC0001C : Debug Register", 70);
term_print("", 0);
term_print(" Starting demo...", 120);
}
void server_print(char *msg)
{
t_context *C=ctx_get();
t_term *term = C->term;
term_print(term,msg);
}
int main(int argc, char *argv[])
{
if(argc == 1) {
printf("usage: %s <cmds> ...\n", argv[0]);
printf("<cmds> is one of:\n");
printf("<expr> -- push <expr> onto stack\n");
printf("<expr> <name> -alpha -- push alpha rename of <expr> using <name>\n");
printf("<expr> -beta -- push beta reduce of <expr>\n");
printf("<expr> -eta -- push eta convert of <expr>\n");
printf("<body> <var> -lambda -- push lambda binding free <var> in <body>\n");
printf("<fun> <arg> -apply -- push apply of <fun> and <arg>\n");
printf("<expr1> <expr2> -alpheq -- push \\x.\\y.x (true) or \\x.\\y.y (false) if <expr1> and <expr2> are alpha equivalent\n");
printf("-body -- move cursor into body of lambda\n");
printf("-fun -- move cursor into func of apply\n");
printf("-arg -- move cursor into arg of apply\n");
printf("-up -- move cursor up one level\n");
printf("-top -- move cursor to top level\n");
printf("<expr1> <expr2> -swap -- swap <expr1> and <expr2>\n");
printf("<expr> -dup -- duplicate <expr>\n");
printf("<expr1> <expr2> -repl -- replace <expr1> with <expr2> and remove <expr2>\n");
printf("-print -- print expression stack\n");
return 0;
}
struct termnode *term_top = NULL;
struct term *church_true, *church_false;
{
enum term_parse_res res;
char *expr = "\\a.\\b.a";
FILE *stream = fmemopen(expr, strlen(expr), "r");
church_true = term_parse(stream, &res);
fclose(stream);
expr = "\\a.\\b.b";
stream = fmemopen(expr, strlen(expr), "r");
church_false = term_parse(stream, &res);
fclose(stream);
}
for(int i = 1; i < argc; i++) {
if(strcmp(argv[i], "-alpha") == 0) {
if(! termstack_get(term_top, 1)) {
fprintf(stderr, "stack underflow\n");
break;
}
struct term *var = termstack_get(term_top, 0);
if(var->type != TYPE_VAR) {
fprintf(stderr, "alpha requires second arg VAR, got ");
term_print(stderr, var);
fputc('\n', stderr);
break;
}
struct term *expr = termstack_get(term_top, 1);
struct term *renamed = alpha_rename(expr, var->var);
if(renamed) {
termstack_push(&term_top, renamed);
} else {
fprintf(stderr, "alpha rename failed\n");
break;
}
} else if(strcmp(argv[i], "-beta") == 0) {
if(! termstack_get(term_top, 0)) {
fprintf(stderr, "stack underflow\n");
break;
}
struct term *term = termstack_get(term_top, 0);
struct term *reduced = beta_reduce(term);
if(reduced) {
termstack_push(&term_top, reduced);
} else {
fprintf(stderr, "beta reduction failed\n");
break;
}
} else if(strcmp(argv[i], "-eta") == 0) {
if(! termstack_get(term_top, 0)) {
fprintf(stderr, "stack underflow\n");
break;
}
struct term *converted = eta_convert(term_top->t);
if(converted) {
termstack_push(&term_top, converted);
} else {
fprintf(stderr, "eta conversion failed\n");
break;
}
} else if(strcmp(argv[i], "-lambda") == 0) {
if(! termstack_get(term_top, 1)) {
fprintf(stderr, "stack underflow\n");
break;
}
struct term *var = termstack_get(term_top, 0);
struct term *body = termstack_get(term_top, 1);
if(var->type != TYPE_VAR) {
fprintf(stderr, "lambda requires VAR, got ");
term_print(stderr, var);
fputc('\n', stderr);
break;
}
struct term *lambda = make_lambda(var->var, body);
if(lambda) {
termstack_push(&term_top, lambda);
} else {
fprintf(stderr, "create lambda failed\n");
break;
}
} else if(strcmp(argv[i], "-apply") == 0) {
if(! termstack_get(term_top, 1)) {
fprintf(stderr, "stack underflow\n");
break;
}
struct term *arg = termstack_get(term_top, 0);
struct term *fun = termstack_get(term_top, 1);
struct term *appl = make_appl(fun, arg);
if(appl) {
termstack_push(&term_top, appl);
} else {
fprintf(stderr, "create apply failed\n");
break;
}
} else if(strcmp(argv[i], "-alpheq") == 0) {
if(! termstack_get(term_top, 1)) {
fprintf(stderr, "stack underflow\n");
break;
}
struct term *t1_term = termstack_get(term_top, 0);
struct term *t2_term = termstack_get(term_top, 1);
if(alpha_eq(t1_term, t2_term)) {
termstack_push(&term_top, term_duplicate(church_true));
} else {
termstack_push(&term_top, term_duplicate(church_false));
}
} else if(strcmp(argv[i], "-print") == 0) {
for(struct termnode *n = term_top; n; n = n->next) {
term_print(stdout, termtrace_current(n->trace));
fprintf(stdout, "\n");
}
} else if(strcmp(argv[i], "-body") == 0) {
if(! termstack_get(term_top, 0)) {
fprintf(stderr, "stack underflow\n");
break;
}
if(termtrace_current(term_top->trace)->type != TYPE_LAMBDA) {
fprintf(stderr, "not a lambda\n");
break;
}
termtrace_go_body(&term_top->trace);
} else if(strcmp(argv[i], "-fun") == 0) {
if(! termstack_get(term_top, 0)) {
fprintf(stderr, "stack underflow\n");
break;
}
if(termtrace_current(term_top->trace)->type != TYPE_APPL) {
fprintf(stderr, "not an apply\n");
break;
}
termtrace_go_fun(&term_top->trace);
} else if(strcmp(argv[i], "-arg") == 0) {
if(! termstack_get(term_top, 0)) {
fprintf(stderr, "stack underflow\n");
break;
}
if(termtrace_current(term_top->trace)->type != TYPE_APPL) {
fprintf(stderr, "not an apply\n");
break;
}
termtrace_go_arg(&term_top->trace);
} else if(strcmp(argv[i], "-up") == 0) {
if(term_top->trace->prev)
termtrace_go_prev(&term_top->trace);
} else if(strcmp(argv[i], "-top") == 0) {
while(term_top->trace->prev)
termtrace_go_prev(&term_top->trace);
} else if(strcmp(argv[i], "-swap") == 0) {
if(! termstack_get(term_top, 1)) {
fprintf(stderr, "stack underflow\n");
break;
}
struct termnode *next = term_top->next;
term_top->next = next->next;
next->next = term_top;
term_top = next;
} else if(strcmp(argv[i], "-dup") == 0) {
if(! termstack_get(term_top, 0)) {
fprintf(stderr, "stack underflow\n");
break;
}
termstack_push(&term_top,
term_duplicate(termtrace_current(term_top->trace)));
} else if(strcmp(argv[i], "-repl") == 0) {
if(! termstack_get(term_top, 1)) {
fprintf(stderr, "stack underflow\n");
break;
}
struct term *newterm = term_duplicate(termtrace_current(term_top->trace));
destroy_term(termstack_pop(&term_top));
destroy_term(termtrace_replace(term_top->trace, newterm));
} else {
FILE *stream = fmemopen(argv[i], strlen(argv[i]), "r");
if(! stream)
continue;
enum term_parse_res res;
struct term *term = term_parse(stream, &res);
fclose(stream);
if(term == NULL) {
long loc = ftell(stream);
if(! feof(stream))
loc--;
printf("parse error: %s at char %lu\n", term_parse_str(res), loc+1);
printf("%s\n", argv[i]);
for(long i = 0; i < loc; i++)
printf(" ");
printf("^\n");
break;
}
termstack_push(&term_top, term);
}
}
struct term *t;
while(NULL != (t = termstack_get(term_top, 0))) {
destroy_term(termstack_pop(&term_top));
}
destroy_term(church_true);
destroy_term(church_false);
return 0;
}