ChibiOS 2.6.8, until I can figure out where to get it from git.

firmware/chibios/os/hal/platforms/Posix/pal_lld.c

@@ -0,0 +1,95 @@
+/*
+    ChibiOS/RT - Copyright (C) 2006-2013 Giovanni Di Sirio
+
+    Licensed under the Apache License, Version 2.0 (the "License");
+    you may not use this file except in compliance with the License.
+    You may obtain a copy of the License at
+
+        http://www.apache.org/licenses/LICENSE-2.0
+
+    Unless required by applicable law or agreed to in writing, software
+    distributed under the License is distributed on an "AS IS" BASIS,
+    WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+    See the License for the specific language governing permissions and
+    limitations under the License.
+*/
+
+/**
+ * @file    Posix/pal_lld.c
+ * @brief   Posix low level simulated PAL driver code.
+ *
+ * @addtogroup POSIX_PAL
+ * @{
+ */
+
+#include "ch.h"
+#include "hal.h"
+
+#if HAL_USE_PAL || defined(__DOXYGEN__)
+
+/*===========================================================================*/
+/* Driver exported variables.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief   VIO1 simulated port.
+ */
+sim_vio_port_t vio_port_1;
+
+/**
+ * @brief   VIO2 simulated port.
+ */
+sim_vio_port_t vio_port_2;
+
+/*===========================================================================*/
+/* Driver local variables and types.                                         */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver local functions.                                                   */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver interrupt handlers.                                                */
+/*===========================================================================*/
+
+/*===========================================================================*/
+/* Driver exported functions.                                                */
+/*===========================================================================*/
+
+/**
+ * @brief Pads mode setup.
+ * @details This function programs a pads group belonging to the same port
+ *          with the specified mode.
+ *
+ * @param[in] port the port identifier
+ * @param[in] mask the group mask
+ * @param[in] mode the mode
+ *
+ * @note This function is not meant to be invoked directly by the application
+ *       code.
+ * @note @p PAL_MODE_UNCONNECTED is implemented as push pull output with high
+ *       state.
+ * @note This function does not alter the @p PINSELx registers. Alternate
+ *       functions setup must be handled by device-specific code.
+ */
+void _pal_lld_setgroupmode(ioportid_t port,
+                           ioportmask_t mask,
+                           iomode_t mode) {
+
+  switch (mode) {
+  case PAL_MODE_RESET:
+  case PAL_MODE_INPUT:
+    port->dir &= ~mask;
+    break;
+  case PAL_MODE_UNCONNECTED:
+    port->latch |= mask;
+  case PAL_MODE_OUTPUT_PUSHPULL:
+    port->dir |= mask;
+    break;
+  }
+}
+
+#endif /* HAL_USE_PAL */
+
+/** @} */