Eugene Rossokha
29 lines
719 B
Zig
29 lines
719 B
Zig
pub const PAGE_SIZE: usize = 0x1000;
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pub fn TranslationLevel(comptime shift: usize) type {
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return struct {
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pub const SHIFT: usize = shift;
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pub const SIZE: usize = 1 << shift;
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pub inline fn index(addr: usize) usize {
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return (addr >> shift) & 511;
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}
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pub inline fn offset(addr: usize) usize {
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return addr & (SIZE - 1);
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}
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pub inline fn address(idx: usize) usize {
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return idx << shift;
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}
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pub inline fn align_down(addr: usize) usize {
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return addr & ~(SIZE - 1);
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}
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pub inline fn align_up(addr: usize) usize {
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return (addr + SIZE - 1) & ~(SIZE - 1);
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}
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};
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}
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