Ex_regs: Change 'user_flags'

Return true if thread is ready.

Was: 'foc_exregs_ret_state.patch'

kernel/fiasco/src/kern/arm/thread-arm.cpp

@@ -325,7 +325,7 @@ Thread::user_sp(Mword sp)
 IMPLEMENT inline
 Mword
 Thread::user_flags() const
-{ return 0; }
+{ return state() & Thread_ready; }
 
 PUBLIC inline NEEDS ["trap_state.h"]
 int

kernel/fiasco/src/kern/ia32/thread-ia32.cpp

@@ -80,7 +80,10 @@ Thread::user_ip() const
 IMPLEMENT inline
 Mword
 Thread::user_flags() const
-{ return regs()->flags(); }
+{
+    // pass thread-ready state in carry flag (Thread_ready is bit 0)
+    return (regs()->flags() & ~Thread_ready) | (state() & Thread_ready);
+}
 
 PRIVATE static inline
 Mword