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[kernel] Run global constructors

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Look up the global constructor list that the linker outputs, and run
them all. Required creation of the `kutil::no_construct` template for
objects that are constructed before the global constructors are run.

Also split the `memory_initialize` function into two - one for just
those objects that need to happen before the global ctors, and one
after.

Tags: memory c++
This commit is contained in:
Justin C. Miller
2020-05-31 23:58:01 -07:00
parent c6c3a556b3
commit 88b090fe94
17 changed files with 126 additions and 67 deletions
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4
src/kernel/page_manager.cpp
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@@ -16,9 +16,6 @@ using memory::page_mappable;
using memory::pml4e_kernel;
using memory::table_entries;
page_manager g_page_manager(g_frame_allocator, 0);
extern kutil::vm_space g_kernel_space;
// NB: in 4KiB page table entries, bit 7 isn't pagesize but PAT. Currently this
// doesn't matter, becasue in the default PAT table, both 000 and 100 are WB.
constexpr uint64_t sys_page_flags = 0x183; // global, pagesize, write, present
@@ -321,6 +318,7 @@ page_manager::fault_handler(uintptr_t addr)
if (!addr)
return false;
extern kutil::vm_space g_kernel_space;
bool is_heap = addr >= ::memory::heap_start &&
addr < ::memory::heap_start + ::memory::kernel_max_heap;