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[kutil] Make enum bitfields usable in other scopes

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Changing the SFINAE/enable_if strategy from a type to a constexpr
function means that it can be defined in other scopes than the functions
themselves, because of function overloading. This lets us put everything
into the kutil::bitfields namespace, and make bitfields out of enums in
other namespaces. Also took the chance to clean up the implementation a
bit.
This commit is contained in:
Justin C. Miller
2021-02-19 20:42:49 -08:00
parent cf22ed57a2
commit f9a967caf7
10 changed files with 101 additions and 147 deletions
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9
src/kernel/memory_bootstrap.cpp
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@@ -24,6 +24,11 @@ using memory::kernel_max_heap;
using namespace kernel;
namespace kernel {
namespace args {
is_bitfield(section_flags);
}}
extern "C" void initialize_main_thread();
extern "C" uintptr_t initialize_main_user_stack();
@@ -203,8 +208,8 @@ load_simple_process(args::program &program)
for (const auto &sect : program.sections) {
vm_flags flags =
(bitfield_has(sect.type, section_flags::execute) ? vm_flags::exec : vm_flags::none) |
(bitfield_has(sect.type, section_flags::write) ? vm_flags::write : vm_flags::none);
((sect.type && section_flags::execute) ? vm_flags::exec : vm_flags::none) |
((sect.type && section_flags::write) ? vm_flags::write : vm_flags::none);
vm_area *vma = new vm_area_fixed(sect.phys_addr, sect.size, flags);
space.add(sect.virt_addr, vma);