koniifer
96c2bd5cd5
restructure render lib add peony's render api additions and example add image example fix some dubious bugs i had made in unused code in mem_serve.rs remove tetris stub (now in peony's fork) update hblang
70 lines
1.9 KiB
Plaintext
70 lines
1.9 KiB
Plaintext
PAGE_SIZE := 4096
|
|
MAX_ALLOC := 0xFF
|
|
|
|
alloc := fn($Expr: type, bytes: int): ^Expr {
|
|
pages := (1 + bytes) / PAGE_SIZE
|
|
if pages <= MAX_ALLOC {
|
|
return @bitcast(@inline(request_page, pages))
|
|
}
|
|
ptr := @inline(request_page, 0xFF)
|
|
remaining := pages - MAX_ALLOC
|
|
loop if remaining <= 0 break else {
|
|
if remaining < MAX_ALLOC {
|
|
request_page(remaining)
|
|
} else {
|
|
request_page(MAX_ALLOC)
|
|
}
|
|
remaining -= MAX_ALLOC
|
|
}
|
|
return @bitcast(ptr)
|
|
}
|
|
|
|
request_page := fn(page_count: u8): ^u8 {
|
|
msg := "\{00}\{01}xxxxxxxx\0"
|
|
msg_page_count := msg + 1;
|
|
*msg_page_count = page_count
|
|
return @eca(3, 2, msg, 12)
|
|
}
|
|
|
|
release_page := fn(ptr: ^u8, page_count: u8): void {
|
|
msg := "\{01}\{00}xxxxxxxx\0"
|
|
|
|
msg_page_count := msg + 1;
|
|
*msg_page_count = page_count
|
|
|
|
msg_ptr := @as(^^u8, @bitcast(msg + 2));
|
|
*msg_ptr = ptr
|
|
|
|
return @eca(3, 2, msg, 12)
|
|
}
|
|
|
|
OutbMsg := packed struct {a: u8, b: u8, addr: u16, value: u8}
|
|
InbMsg := packed struct {a: u8, b: u8, addr: u16}
|
|
OutlMsg := packed struct {a: u8, b: u8, addr: u16, value: u32}
|
|
InlMsg := packed struct {a: u8, b: u8, addr: u16}
|
|
|
|
outb := fn(addr: u16, value: u8): void {
|
|
return @eca(3, 3, &OutbMsg.(1, 0, addr, value), @sizeof(OutbMsg))
|
|
}
|
|
|
|
inb := fn(addr: u16): u8 {
|
|
return @eca(3, 3, &InbMsg.(0, 0, addr), @sizeof(InbMsg))
|
|
}
|
|
|
|
outl := fn(addr: u16, value: u32): void {
|
|
return @eca(3, 3, &OutlMsg.(1, 2, addr, value), @sizeof(OutlMsg))
|
|
}
|
|
|
|
inl := fn(addr: u16): u32 {
|
|
return @eca(3, 3, &InlMsg.(0, 2, addr), @sizeof(InlMsg))
|
|
}
|
|
|
|
CopyMsg := packed struct {a: u8, count: uint, src: uint, dest: ^u8}
|
|
copy := fn($Expr: type, src: ^Expr, dest: ^Expr, count: uint): void {
|
|
return @eca(3, 2, &CopyMsg.(4, count * @sizeof(Expr), @bitcast(src), @bitcast(dest)), @sizeof(CopyMsg))
|
|
}
|
|
|
|
SetMsg := packed struct {a: u8, count: uint, size: uint, dest: ^u8, src: ^u8}
|
|
set := fn($Expr: type, src: ^Expr, dest: ^Expr, count: uint): void {
|
|
return @eca(3, 2, &SetMsg.(5, count, @sizeof(Expr), @bitcast(dest), @bitcast(src)), @sizeof(SetMsg))
|
|
} |