Kernel Loader: Difference between revisions

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 == KernelLdr_ApplyRelocations ==
-TODO: Fill this out
+This does standard ELF relocation using .dynamic.
+First, it iterates over all entries in .dynamic, extracting .rel.dyn, .rela.dyn, relent, relatent, relcount, relacount from the relevant entries.
+Then it does the following two loops to apply R_AARCH64_RELATIVE relocations:
+<pre>
+    for (size_t i = 0; i < rel_count; i++) {
+        const Elf64_Rel *rel = dyn_rel_start + rel_ent * i;
+        while (uint32_t(rel->r_info) != R_AARCH64_RELATIVE) { /* Invalid entry, infloops */ }
+        *((Elf64_Addr *)(base_address + rel->r_offset)) += base_address;
+    }
+</pre>
+<pre>
+    for (size_t i = 0; i < rela_count; i++) {
+        const Elf64_Rela *rela = dyn_rela_start + rela_ent * i;
+        while (uint32_t(rela->r_info) != R_AARCH64_RELATIVE) { /* Invalid entry, infloops */ }
+        *((Elf64_Addr *)(base_address + rela->r_offset)) = base_address + rela->r_addend;
+    }
+</pre>
 == KernelLdr_lib_init_array() ==