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Kernel: Support execute disable bit

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We will now map executable memory explicitly as executable.
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Bananymous
2023-07-13 14:28:53 +03:00
parent bca7e9a1e8
commit 7d00c2670f
4 changed files with 38 additions and 3 deletions
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2
kernel/kernel/Process.cpp
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@@ -458,6 +458,8 @@ namespace Kernel
uint8_t flags = PageTable::Flags::UserSupervisor | PageTable::Flags::Present;
if (elf_program_header.p_flags & LibELF::PF_W)
flags |= PageTable::Flags::ReadWrite;
if (elf_program_header.p_flags & LibELF::PF_X)
flags |= PageTable::Flags::Execute;
size_t page_start = elf_program_header.p_vaddr / PAGE_SIZE;
size_t page_end = BAN::Math::div_round_up<size_t>(elf_program_header.p_vaddr + elf_program_header.p_memsz, PAGE_SIZE);