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initial work on patching npdm debug flags, stubbed for now

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stubbed as bit(19) doesn't seem to do what i thought it would.

fixes #67
This commit is contained in:
ITotalJustice
2024-12-31 22:05:04 +00:00
parent 271fab66f5
commit dd1a6eb25b
1 changed files with 43 additions and 0 deletions
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43
sphaira/source/owo.cpp
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@@ -191,6 +191,20 @@ struct NpdmMeta {
u32 acid_size;
};
struct NpdmAci0 {
u32 magic; // "ACI0"
u8 _0x4[0xC];
u32 program_id;
u8 _0x18[0x8];
u32 fac_offset;
u32 fac_size;
u32 sac_offset;
u32 sac_size;
u32 kac_offset;
u32 kac_size;
u8 _0x38[0x8];
};
struct NpdmPatch {
char title_name[0x10]{"Application"};
char product_code[0x10]{};
@@ -581,7 +595,9 @@ auto romfs_build(const FileEntries& entries, u64 *out_size) -> std::vector<u8> {
// todo: manually build npdm
void patch_npdm(std::vector<u8>& npdm, const NpdmPatch& patch) {
NpdmMeta meta{};
NpdmAci0 aci0{};
std::memcpy(&meta, npdm.data(), sizeof(meta));
std::memcpy(&aci0, npdm.data() + meta.aci0_offset, sizeof(aci0));
// apply patch
std::memcpy(npdm.data() + 0x20, &patch.title_name, sizeof(patch.title_name));
@@ -589,6 +605,33 @@ void patch_npdm(std::vector<u8>& npdm, const NpdmPatch& patch) {
std::memcpy(npdm.data() + meta.aci0_offset + 0x10, &patch.tid, sizeof(patch.tid));
std::memcpy(npdm.data() + meta.acid_offset + 0x210, &patch.tid, sizeof(patch.tid));
std::memcpy(npdm.data() + meta.acid_offset + 0x218, &patch.tid, sizeof(patch.tid));
// patch debug flags based on ams version
// SEE: https://github.com/ITotalJustice/sphaira/issues/67
// disabled as it doesn't seem to launch with ForceDebug set.
// todo: look into ams and figure out why.
#if 0
u64 ver{};
splInitialize();
ON_SCOPE_EXIT(splExit());
const auto SplConfigItem_ExosphereVersion = (SplConfigItem)65000;
splGetConfig(SplConfigItem_ExosphereVersion, &ver);
ver >>= 40;
const auto kac_offset = meta.aci0_offset + sizeof(aci0) + aci0.kac_offset;
for (u32 i = 0; i < aci0.kac_size; i += 4) {
u32 cup;
std::memcpy(&cup, npdm.data() + kac_offset + i, sizeof(cup));
if ((cup & 0x1FFFF) == 0xFFFF) {
if (ver >= MAKEHOSVERSION(1,7,1) && hosversionAtLeast(1, 9, 0)) {
cup = BIT(19) | 0xFFFF; // ForceDebug
}
std::memcpy(npdm.data() + kac_offset + i, &cup, sizeof(cup));
break;
}
}
#endif
}
void patch_nacp(NacpStruct& nacp, const NcapPatch& patch) {