void
main()
{
int c;
int i, j;
u16int *p;
reg = segattach(0, "axi", nil, 4096);
if(reg == (int*)-1)
sysfatal("segattach: %r");
*reg = 0;
cmd("CL");
cmd("DIM");
*reg = 80-24;
*reg = 60-24;
*reg = 48;
*reg = 48;
p = face;
for(i = 0; i < 48; i++){
for(j = 0; j < 3; j++){
*reg = ~*p >> 8;
*reg = ~*p;
p++;
}
}
}
uintptr
syssegattach(va_list list)
{
ulong attr;
char *name;
uintptr va;
ulong len;
attr = va_arg(list, ulong);
name = va_arg(list, char*);
va = va_arg(list, uintptr);
len = va_arg(list, ulong);
return segattach(up, attr, name, va, len);
}
/*
* create a shared segment. Make is start 2 meg higher than the current
* end of process memory.
*/
void*
share(ulong len)
{
uchar *vastart;
vastart = sbrk(0);
if(vastart == (void*)-1)
return 0;
vastart += 2*1024*1024;
if(segattach(0, "shared", vastart, len) == (void*)-1)
return 0;
return vastart;
}
uintptr
syssegattach(va_list list)
{
ulong attr;
char *name;
uintptr va;
ulong len;
attr = va_arg(list, ulong);
name = va_arg(list, char*);
va = va_arg(list, uintptr);
len = va_arg(list, ulong);
validaddr((uintptr)name, 1, 0);
name = validnamedup(name, 1);
if(waserror()){
free(name);
nexterror();
}
va = segattach(up, attr, name, va, len);
free(name);
poperror();
return va;
}
long
syssegattach(ulong *arg)
{
return segattach(up, arg[0], (char*)arg[1], arg[2], arg[3]);
}
/*
* bind a pipe onto consctl and keep reading it to
* get changes to console state.
*/
Consstate*
consctl(void)
{
int i, n, fd, tries;
char buf[128];
Consstate *x;
char *field[10];
x = segattach(0, "shared", 0, sizeof *x);
if(x == (void*)-1)
sysfatal("segattach: %r");
/* a pipe to simulate consctl */
if(bind("#|", "/mnt/cons/consctl", MBEFORE) < 0
|| bind("/mnt/cons/consctl/data1", "/dev/consctl", MREPL) < 0)
sysfatal("bind consctl: %r");
/* a pipe to simulate the /dev/cons */
if(bind("#|", "/mnt/cons/cons", MREPL) < 0
|| bind("/mnt/cons/cons/data1", "/dev/cons", MREPL) < 0)
sysfatal("bind cons: %r");
switch(fork()){
case -1:
sysfatal("fork: %r");
case 0:
break;
default:
return x;
}
notify(0);
for(tries = 0; tries < 100; tries++){
x->raw = 0;
x->hold = 0;
fd = open("/mnt/cons/consctl/data", OREAD);
if(fd < 0)
break;
tries = 0;
for(;;){
n = read(fd, buf, sizeof(buf)-1);
if(n <= 0)
break;
buf[n] = 0;
n = getfields(buf, field, 10, 1, " ");
for(i = 0; i < n; i++){
if(strcmp(field[i], "rawon") == 0)
x->raw = 1;
else if(strcmp(field[i], "rawoff") == 0)
x->raw = 0;
else if(strcmp(field[i], "holdon") == 0)
x->hold = 1;
else if(strcmp(field[i], "holdoff") == 0)
x->hold = 0;
}
}
close(fd);
}
exits(0);
return 0; /* dummy to keep compiler quiet*/
}