1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
|
#include "./prelude/kernel_prelude.hats"
staload "kernel/interrupts/idt.sats"
staload BOOT = "kernel/bootinfo/multiboot.sats"
staload FRAME = "kernel/memory/frame.sats"
staload ENTRY = "kernel/memory/paging/entry.sats"
staload PAGE = "kernel/memory/paging/page.sats"
staload "lib/SATS/valid.sats"
staload "lib/DATS/valid.dats"
staload "lib/SATS/writer.sats"
#define ATS_DYNLOADFLAG 0
%{^
void breakpoint(){
__asm__("int3");
}
%}
//NOTE: how to make sure ats checks 2 contstraints in one if statement?
//TODO: put in seperate utils module (just generic size function)
fn kernel_size(kernel_start : Ptr, kernel_end : Ptr) : size_t = let
extern castfn Ptr12size (a : Ptr1): size_t
in
if (kernel_end > the_null_ptr) then
if (kernel_start > the_null_ptr) then
Ptr12size(kernel_end) - Ptr12size(kernel_start)
else
i2sz(0)
else
i2sz(0)
end
fn test() : void = let
val a = sz_to_Ptr0(i2sz(42 * 512 * 512 * 4096)); // 42th P3 entry
val page = $PAGE.containing_address(a)
val () = println!("page num: ", page.num)
val frame = $FRAME.allocate_frame()
var flags = @[$ENTRY.entry_flag]($ENTRY.WRITABLE)
val () = $PAGE.map_to(page,frame,flags,i2sz(1))
val aframe = $PAGE.translate(a)
val frame2 = $FRAME.allocate_frame()
(* val () = println!("Map to ", frame.num) *)
in
if (is_valid(aframe)) then
let
val vframe = unwrap_valid(aframe)
in
println!("Got ",vframe)
end
else (
destroy_unvalid(aframe);
println!("Unvalid aframe")
);
println!("frame2: ", frame2.num)
end
extern fun breakpoint() :void = "mac#"
extern fun main(p : Ptr1) : void = "ext#"
implement main(p) = let
val () = $BOOT.init(p);
val (kernel_start,kernel_end) = $BOOT.get_kernel_ranges()
val (multiboot_start,multiboot_end) = $BOOT.get_multiboot_ranges()
val () = $FRAME.init(kernel_start,kernel_end,multiboot_start,multiboot_end);
in
(* $BOOT.print_memory_mappings(); *)
(* $BOOT.print_elf_headers(); *)
println!("Kernel Size: ", kernel_size(kernel_start,kernel_end));
test();
// Initialize interrupt table
idt_init();
// Throws breakpoint exception
breakpoint();
println!("End");
end
|
