feat(libSceShare): report no running share feature in sceShareGetRunningStatus

The host never records or broadcasts, so the first status word is cleared and the call succeeds; a null status is rejected.

core/libs/prx/libSceShare/Export.cpp

@@ -110,8 +110,11 @@ int APS5_VABI sceShareCaptureVideoClipExtended(void) {
     return 0;
 }
 
-int APS5_VABI sceShareGetRunningStatus(void) {
-    NotImplemented_nid_no_patch(__func__);
+int APS5_VABI sceShareGetRunningStatus(uint32_t* status) {
+    if (status == nullptr) {
+        return ERROR_INVALID_PARAM;
+    }
+    *status = 0;
     return 0;
 }
 

core/libs/tests/GuestShare.cpp

@@ -10,6 +10,7 @@ int APS5_VABI sceShareCaptureScreenshot(const void* param, std::int32_t* req_id)
 int APS5_VABI sceShareCaptureVideoClip(const void* param, std::int32_t* req_id);
 int APS5_VABI sceShareGetCurrentStatus(std::uint32_t feature_flag, void* status);
 int APS5_VABI sceShareOpenMenuForContent(const void* content_id);
+int APS5_VABI sceShareGetRunningStatus(std::uint32_t* status);
 }
 
 namespace {
@@ -59,5 +60,9 @@ int main() {
     Require(sceShareGetCurrentStatus(0, status) == invalidParam);
     Require(status[0] == 0x5a);
     Require(sceShareGetCurrentStatus(1, nullptr) == invalidParam);
+    std::uint32_t running[2]{0xffffffffu, 0x5a5a5a5au};
+    Require(sceShareGetRunningStatus(running) == 0);
+    Require(running[0] == 0 && running[1] == 0x5a5a5a5au);
+    Require(sceShareGetRunningStatus(nullptr) == invalidParam);
     return 0;
 }

docs/dev/TechnicalDebt.md

@@ -199,6 +199,7 @@ Throughout the project, every function at every stage either **does exactly what
 - [LinuxProtFromSce](../../core/libs/prx/libkernel/DirectMemory/DirectMemory.cpp) (libkernel) - protection bits 0x100 and 0x200 are accepted and assumed not to affect host CPU access; host protection is derived only from the read, write and execute bits
 - [_sceUlobjmgrRegisterObject](../../core/libs/prx/ulobjmgr/Export.cpp) (ulobjmgr) - parameters taken from shadPS4 (PS4): a nonzero 64-bit object, a nonzero 32-bit kind and a 32-bit id output; the meaning of the first two and the PS5 signature are unverified. The id bound of `_sceUlobjmgrUnregisterObject` (below 0x4000) and the raw `EINVAL` (22) return also come from shadPS4
 - [sceShareGetCurrentStatus](../../core/libs/prx/libSceShare/Export.cpp) (libSceShare) - validation (feature flag non-zero, status non-null) and the all-zero 16-byte status taken from the [KytyPS5](https://github.com/KytyPS5/KytyPS5) reimplementation, not confirmed on a PS5 title; the meaning of the recording status values is unknown
+- [sceShareGetRunningStatus](../../core/libs/prx/libSceShare/Export.cpp) (libSceShare) - only the first 32-bit word of the status is known: PPSA01317 treats bits 0x3c of it as a running share feature and gives the call a 40-byte buffer. The host never records or broadcasts, so it stores 0 in that word and leaves the rest untouched; a null status returns `INVALID_PARAM` by analogy with `sceShareGetCurrentStatus`
 - [sceAgcDcbSetZPassPredicationEnableGetSize, sceAgcDcbSetPredicationDisableGetSize, sceAgcDcbSetBoolPredicationEnableGetSize](../../core/libs/prx/libSceAgc/DcbState/src/Predication.cpp) (libSceAgc) - the builders are inline in the SDK and not exported; the size is assumed to be that of the SET_PREDICATION packet `sceAgcDcbSetPredication` writes (16 bytes)
 - [Resource registration](../../core/libs/prx/libSceAgcDriver/Resource/src/Registration.cpp) (libSceAgcDriver) - registration always fails with `RESOURCE_REGISTRATION_UNAVAILABLE`, so the owner and resource queries, `sceAgcDriverSetResourceUserData`, `sceAgcDriverFindResourcesPublic` and `sceAgcDriverUnregisterAllResourcesForOwner` return the same error without reading their arguments. Their parameter lists follow the libSceGnmDriver counterparts and are unverified. `sceAgcDriverGetResourceRegistrationMaxNameLength` writes 0xfc and returns 0, as [prosper](https://github.com/mattias800/prosper) does from a title's registration configuration; the `uint32_t*` parameter matches the SDK wrapper `sce::Agc::ResourceRegistration::getMaxNameLength(unsigned int*)`. sharpemu writes 256 and KytyPS5 returns `RESOURCE_REGISTRATION_UNAVAILABLE`, so the value is unverified; a null output throws
 - [Shader registration](../../core/libs/prx/libSceAgcDriver/Execution/src/Driver/Shaders/ShaderRegistry.cpp) (libSceAgcDriver) - a shader header is accepted at any address: PPSA26344 passes headers 4 and 1 bytes past an 8-byte boundary; whether the console refuses an alignment is unknown