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https://github.com/taigrr/gopher-os
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b67a2045b9
This is equivalent to pmm.Frame (also a uintptr) but having different types for physical and virtual frames serves as an additional layer of protection for functions/methods that receive physical and/or virtual page arguments.
36 lines
790 B
Go
36 lines
790 B
Go
package vmm
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import (
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"testing"
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"github.com/achilleasa/gopher-os/kernel/mem"
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)
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func TestPageMethods(t *testing.T) {
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for pageIndex := uint64(0); pageIndex < 128; pageIndex++ {
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page := Page(pageIndex)
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if exp, got := uintptr(pageIndex<<mem.PageShift), page.Address(); got != exp {
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t.Errorf("expected page (%d, index: %d) call to Address() to return %x; got %x", page, pageIndex, exp, got)
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}
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}
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}
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func TestPageFromAddress(t *testing.T) {
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specs := []struct {
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input uintptr
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expPage Page
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}{
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{0, Page(0)},
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{4095, Page(0)},
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{4096, Page(1)},
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{4123, Page(1)},
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}
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for specIndex, spec := range specs {
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if got := PageFromAddress(spec.input); got != spec.expPage {
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t.Errorf("[spec %d] expected returned page to be %v; got %v", specIndex, spec.expPage, got)
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}
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}
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}
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