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Allow exec, emulate clone by pretending to be child

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This commit is contained in:
Jeremy Soller 2016-09-11 18:03:10 -06:00
commit f0431f4de1
1 changed files with 33 additions and 13 deletions
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8
kernel/elf.rs
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@ -60,6 +60,10 @@ impl<'a> Elf<'a> {
let end_page = Page::containing_address(VirtualAddress::new((segment.p_vaddr + segment.p_memsz) as usize));
for page in Page::range_inclusive(start_page, end_page) {
if active_table.translate_page(page).is_some() {
//TODO panic!("Elf::run: still mapped: {:?}", page);
active_table.unmap(page);
}
active_table.map(page, entry::NO_EXECUTE | entry::WRITABLE);
}
active_table.flush_all();
@ -100,6 +104,10 @@ impl<'a> Elf<'a> {
let end_page = Page::containing_address(VirtualAddress::new(0x80000000 + 64*1024 - 1));
for page in Page::range_inclusive(start_page, end_page) {
if active_table.translate_page(page).is_some() {
//TODO panic!("Elf::run: still mapped: {:?}", page);
active_table.unmap(page);
}
active_table.map(page, entry::NO_EXECUTE | entry::WRITABLE | entry::USER_ACCESSIBLE);
}
active_table.flush_all();