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Patch engine: add bd32, bd64 and utf8 patch types 

bd32 is the same as be32 with a hint it's not executable.
utf8 is NOT null-terminated string, null can be added manually.
This commit is contained in:
Nekotekina 2021-02-12 15:02:31 +03:00
parent 00be247913
commit 629d608d4f
2 changed files with 25 additions and 0 deletions
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22
Utilities/bin_patch.cpp
View File

@ -44,9 +44,12 @@ void fmt_class_string<patch_type>::format(std::string& out, u64 arg)
case patch_type::bef64: return "bef64";
case patch_type::be16: return "be16";
case patch_type::be32: return "be32";
case patch_type::bd32: return "bd32";
case patch_type::be64: return "be64";
case patch_type::bd64: return "bd64";
case patch_type::lef32: return "lef32";
case patch_type::lef64: return "lef64";
case patch_type::utf8: return "utf8";
}
return unknown;
@ -427,6 +430,10 @@ bool patch_engine::add_patch_data(YAML::Node node, patch_info& info, u32 modifie
switch (p_data.type)
{
case patch_type::utf8:
{
break;
}
case patch_type::bef32:
case patch_type::lef32:
case patch_type::bef64:
@ -568,6 +575,11 @@ static std::basic_string<u32> apply_modification(const patch_engine::patch_info&
*reinterpret_cast<be_t<u16, 1>*>(ptr) = static_cast<u16>(p.value.long_value);
break;
}
case patch_type::bd32:
{
*reinterpret_cast<be_t<u32, 1>*>(ptr) = static_cast<u32>(p.value.long_value);
break;
}
case patch_type::be32:
{
*reinterpret_cast<be_t<u32, 1>*>(ptr) = static_cast<u32>(p.value.long_value);
@ -579,6 +591,11 @@ static std::basic_string<u32> apply_modification(const patch_engine::patch_info&
*reinterpret_cast<be_t<u32, 1>*>(ptr) = std::bit_cast<u32, f32>(static_cast<f32>(p.value.double_value));
break;
}
case patch_type::bd64:
{
*reinterpret_cast<be_t<u64, 1>*>(ptr) = static_cast<u64>(p.value.long_value);
break;
}
case patch_type::be64:
{
*reinterpret_cast<be_t<u64, 1>*>(ptr) = static_cast<u64>(p.value.long_value);
@ -597,6 +614,11 @@ static std::basic_string<u32> apply_modification(const patch_engine::patch_info&
*reinterpret_cast<be_t<u64, 1>*>(ptr) = std::bit_cast<u64, f64>(p.value.double_value);
break;
}
case patch_type::utf8:
{
std::memcpy(ptr, p.original_value.data(), p.original_value.size());
break;
}
}
// Possibly an executable instruction

3
Utilities/bin_patch.h
View File

@ -34,9 +34,12 @@ enum class patch_type
lef64,
be16,
be32,
bd32, // be32 with data hint (non-code)
be64,
bd64, // be64 with data hint (non-code)
bef32,
bef64,
utf8, // Text of string (not null-terminated automatically)
};
class patch_engine