kern: Support older SVC ABIs

2020-07-13 18:50:37 -07:00
parent 3d2eb8e903
commit ff022115ca
7 changed files with 94 additions and 21 deletions
--- a/mesosphere/kernel_ldr/source/kern_init_loader.cpp
+++ b/mesosphere/kernel_ldr/source/kern_init_loader.cpp
@@ -318,6 +318,8 @@ namespace ams::kern::init::loader {
        Elf::ApplyRelocations(GetInteger(virtual_base_address), kernel_dynamic);

        /* Call the kernel's init array functions. */
+        /* NOTE: The kernel does this after reprotecting .rodata, but we do it before. */
+        /* This allows our global constructors to edit .rodata, which is valuable for editing the SVC tables to support older firmwares' ABIs. */
        Elf::CallInitArrayFuncs(GetInteger(virtual_base_address) + init_array_offset, GetInteger(virtual_base_address) + init_array_end_offset);

        /* Reprotect .rodata as R-- */