888
edits
Changes
Jump to navigation
Jump to search
Line 73:
Line 73: + + + + + + + + + + + + + + + + + + + + + + + + +
→KernelLdr_LoadKernel
// This is maybe to support reserving unused memory for a second OS/hypervisor?
// This is maybe to support reserving unused memory for a second OS/hypervisor?
KernelLdr_RelocateKernelPhysically(&kernel_base, &kernel_map);
KernelLdr_RelocateKernelPhysically(&kernel_base, &kernel_map);
</pre>
Then it checks all of the kernel map's offsets (and the kernel base) for page alignment.
<pre>
// Read offsets from the kernel map, save on stack.
text_offset = kernel_map->text_offset;
text_end_offset = kernel_map->text_end_offset;
ro_offset = kernel_map->ro_offset;
ro_end_offset = kernel_map->ro_end_offset;
rw_offset = kernel_map->rw_offset;
rw_end_offset = kernel_map->rw_end_offset;
bss_offset = kernel_map->bss_offset;
ini1_load_offset = kernel_map->ini1_load_offset;
dynamic_offset = kernel_map->dynamic_offset;
init_array_offset = kernel_map->init_array_offset;
init_array_end_offset = kernel_map->init_array_end_offset;
// Check all offsets are appropriately aligned.
while (kernel_base & 0xFFF) { }
while (text_offset & 0xFFF) { }
while (text_end_offset & 0xFFF) { }
while (ro_offset & 0xFFF) { }
while (ro_end_offset & 0xFFF) { }
while (rw_offset & 0xFFF) { }
while (rw_end_offset & 0xFFF) { }
</pre>
</pre>