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Patches/PPU: Add jump_link patch type

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Eladash 2021-09-02 18:14:26 +03:00 • committed by Ivan
parent fafefb2cf5
commit f98595bee5
5 changed files with 28 additions and 18 deletions
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6
Utilities/bin_patch.cpp
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@ -40,6 +40,7 @@ void fmt_class_string<patch_type>::format(std::string& out, u64 arg)
case patch_type::alloc: return "alloc";
case patch_type::code_alloc: return "calloc";
case patch_type::jump: return "jump";
case patch_type::jump_link: return "jumpl";
case patch_type::load: return "load";
case patch_type::byte: return "byte";
case patch_type::le16: return "le16";
@ -551,7 +552,7 @@ void patch_engine::append_title_patches(const std::string& title_id)
}
void ppu_register_range(u32 addr, u32 size);
bool ppu_form_branch_to_code(u32 entry, u32 target);
bool ppu_form_branch_to_code(u32 entry, u32 target, bool link = false);
void unmap_vm_area(std::shared_ptr<vm::block_t>& ptr)
{
@ -737,12 +738,13 @@ static usz apply_modification(std::basic_string<u32>& applied, const patch_engin
break;
}
case patch_type::jump:
case patch_type::jump_link:
{
const u32 out_branch = vm::try_get_addr(dst + (offset & -4)).first;
const u32 dest = static_cast<u32>(p.value.long_value);
// Allow only if points to a PPU executable instruction
if (!ppu_form_branch_to_code(out_branch, dest))
if (!ppu_form_branch_to_code(out_branch, dest, p.type == patch_type::jump_link))
{
continue;
}