Merge pull request #11288 from liamwhite/svc-tick

kernel: remove relative task registration

1 files changed, 19 insertions, 1 deletions

diff --git a/src/core/hle/kernel/svc/svc_ipc.cpp b/src/core/hle/kernel/svc/svc_ipc.cpp
index 373ae7c8d..6b5e1cb8d 100644
--- a/src/core/hle/kernel/svc/svc_ipc.cpp
+++ b/src/core/hle/kernel/svc/svc_ipc.cpp
@@ -5,6 +5,7 @@
 #include "common/scratch_buffer.h"
 #include "core/core.h"
 #include "core/hle/kernel/k_client_session.h"
+#include "core/hle/kernel/k_hardware_timer.h"
 #include "core/hle/kernel/k_process.h"
 #include "core/hle/kernel/k_server_session.h"
 #include "core/hle/kernel/svc.h"
@@ -82,12 +83,29 @@ Result ReplyAndReceive(Core::System& system, s32* out_index, uint64_t handles_ad
         R_TRY(session->SendReply());
     }
 
+    // Convert the timeout from nanoseconds to ticks.
+    // NOTE: Nintendo does not use this conversion logic in WaitSynchronization...
+    s64 timeout;
+    if (timeout_ns > 0) {
+        const s64 offset_tick(timeout_ns);
+        if (offset_tick > 0) {
+            timeout = kernel.HardwareTimer().GetTick() + offset_tick + 2;
+            if (timeout <= 0) {
+                timeout = std::numeric_limits<s64>::max();
+            }
+        } else {
+            timeout = std::numeric_limits<s64>::max();
+        }
+    } else {
+        timeout = timeout_ns;
+    }
+
     // Wait for a message.
     while (true) {
         // Wait for an object.
         s32 index;
         Result result = KSynchronizationObject::Wait(kernel, std::addressof(index), objs.data(),
-                                                     num_handles, timeout_ns);
+                                                     num_handles, timeout);
         if (result == ResultTimedOut) {
             R_RETURN(result);
         }