Copied from i386 (needs porting of course)

1 files changed, 77 insertions, 0 deletions

diff --git a/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/x86_64/__door_return.S b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/x86_64/__door_return.S
new file mode 100644
index 0000000000..0eb08da270
--- /dev/null
+++ b/sysdeps/unix/sysv/solaris2/kopensolaris-gnu/x86_64/__door_return.S
@@ -0,0 +1,77 @@
+/* Copyright (C) 2008 Free Software Foundation, Inc.
+   This file is part of the GNU C Library.
+   Contributed by David Bartley <dtbartle@csclub.uwaterloo.ca>, 2008.
+
+   The GNU C Library is free software; you can redistribute it and/or
+   modify it under the terms of the GNU Lesser General Public
+   License as published by the Free Software Foundation; either
+   version 2.1 of the License, or (at your option) any later version.
+
+   The GNU C Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
+   Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public
+   License along with the GNU C Library; if not, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+#include <sysdep.h>
+#include "door-offsets.h"
+
+/* The door_return call serves two purposes. First, it is called to transfer
+   the results of a door server back to the client. Second, it waits for a
+   client to pass in results destined for the server. The first part involves
+   no tricks; we simply call into the kernel. When the syscall returns, our
+   stack will have been adjusted; client args will have been copied onto the
+   stack. The stack pointer itself points to a struct door_results.
+
+   For the second part, we need to pass the door results to the server
+   function. The first few fields of door_results matches the arguments of
+   the server function (probably by design) so we can just call the server
+   function.
+
+   Since servers may block for any reason and to handle high-load doors, we
+   create a new server thread whenever there are none in the thread pool.  */
+
+ENTRY (__door_return)
+L(restart):
+    DO_CALL (door, 6)
+
+    /* Check for error.  */
+    jb SYSCALL_ERROR_LABEL;
+
+    /* TODO: adjust cfi.  */
+
+    /* Check nservers.  */
+    movl oDOOR_RESULTS_NSERVERS(%esp), %ecx
+    andl %ecx, %ecx
+    jg 1f
+
+    /* Create another server thread.  */
+    movl oDOOR_RESULTS_DOOR_INFO(%esp), %ecx
+    pushl %ecx; cfi_adjust_cfa_offset (4);
+#ifdef PIC
+    call __i686.get_pc_thunk.cx
+    addl $_GLOBAL_OFFSET_TABLE_, %ecx
+#endif
+
+#ifdef PIC
+    movl door_server_create_proc@GOTOFF(%ecx), %ecx
+#else
+    movl door_server_create_proc, %ecx
+#endif
+    call *%ecx
+    addl $4, %esp; cfi_adjust_cfa_offset (-4);
+
+1:
+    /* Call server function.  */
+    movl oDOOR_RESULTS_PC(%esp), %ecx
+    call *%ecx
+
+    /* The server function is supposed to call door_return...  */
+    pushl $0; cfi_adjust_cfa_offset (4);
+    call __pthread_exit
+L(pseudo_end):
+PSEUDO_END (__door_return)