ntdll: Implement relay debugging for register entry points on x86_64.

dlls/ntdll/relay.c

@@ -479,7 +479,76 @@ void WINAPI __regs_relay_call_regs( struct relay_descr *descr, unsigned int idx,
 }
 extern void WINAPI relay_call_regs(void);
 DEFINE_REGS_ENTRYPOINT( relay_call_regs, 4 )
-#endif
+
+#else  /* __i386__ */
+
+void WINAPI __regs_relay_call_regs( struct relay_descr *descr, INT_PTR idx,
+                                    INT_PTR *stack, CONTEXT *context )
+{
+    WORD ordinal = LOWORD(idx);
+    BYTE nb_args = LOBYTE(HIWORD(idx));
+    struct relay_private_data *data = descr->private;
+    struct relay_entry_point *entry_point = data->entry_points + ordinal;
+    BYTE *orig_func = entry_point->orig_func;
+    INT_PTR *args = stack + 1;
+    INT_PTR args_copy[32];
+
+    /* restore the context to what it was before the relay thunk */
+    context->Rip = stack[0];
+    context->Rsp = (INT_PTR)args;
+
+    if (TRACE_ON(relay))
+    {
+        if (entry_point->name)
+            DPRINTF( "%04x:Call %s.%s(", GetCurrentThreadId(), data->dllname, entry_point->name );
+        else
+            DPRINTF( "%04x:Call %s.%u(", GetCurrentThreadId(), data->dllname, data->base + ordinal );
+        RELAY_PrintArgs( args, nb_args, descr->arg_types[ordinal] );
+        DPRINTF( ") ret=%08lx\n", context->Rip );
+
+        DPRINTF( "%04x: rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
+                 GetCurrentThreadId(), context->Rax, context->Rbx, context->Rcx, context->Rdx,
+                 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
+        DPRINTF( "%04x:  r8=%016lx  r9=%016lx r10=%016lx r11=%016lx r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
+                 GetCurrentThreadId(), context->R8, context->R9, context->R10, context->R11,
+                 context->R12, context->R13, context->R14, context->R15 );
+
+        assert( orig_func[17] == 0x48 /* leaq */ );
+        assert( orig_func[18] == 0x8d );
+        assert( orig_func[19] == 0x15 );
+        assert( orig_func[24] == 0xe8 /* call */ );
+    }
+
+    /* now call the real function */
+
+    memcpy( args_copy, args, nb_args * sizeof(args[0]) );
+    args_copy[nb_args++] = (INT_PTR)context;  /* append context argument */
+
+    call_entry_point( orig_func + 24 + *(int *)(orig_func + 20), nb_args, args_copy );
+
+
+    if (TRACE_ON(relay))
+    {
+        if (entry_point->name)
+            DPRINTF( "%04x:Ret  %s.%s() retval=%08lx ret=%08lx\n",
+                     GetCurrentThreadId(), data->dllname, entry_point->name,
+                     context->Rax, context->Rip );
+        else
+            DPRINTF( "%04x:Ret  %s.%u() retval=%08lx ret=%08lx\n",
+                     GetCurrentThreadId(), data->dllname, data->base + ordinal,
+                     context->Rax, context->Rip );
+        DPRINTF( "%04x:  rax=%016lx rbx=%016lx rcx=%016lx rdx=%016lx rsi=%016lx rdi=%016lx rbp=%016lx rsp=%016lx\n",
+                 GetCurrentThreadId(), context->Rax, context->Rbx, context->Rcx, context->Rdx,
+                 context->Rsi, context->Rdi, context->Rbp, context->Rsp );
+        DPRINTF( "%04x:  r8=%016lx  r9=%016lx r10=%016lx r11=%016lx r12=%016lx r13=%016lx r14=%016lx r15=%016lx\n",
+                 GetCurrentThreadId(), context->R8, context->R9, context->R10, context->R11,
+                 context->R12, context->R13, context->R14, context->R15 );
+    }
+}
+extern void WINAPI relay_call_regs(void);
+DEFINE_REGS_ENTRYPOINT( relay_call_regs, 3 )
+
+#endif  /* __i386__ */
 
 
 /***********************************************************************
@@ -529,9 +598,7 @@ void RELAY_SetupDLL( HMODULE module )
         return;
 
     descr->relay_call = relay_call;
-#ifdef __i386__
     descr->relay_call_regs = relay_call_regs;
-#endif
     descr->private = data;
 
     data->module = module;