Improved certain Cortex-M3 context switch times

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@2177 42af7a65-404d-4744-a932-0658087f49c3

5 files changed, 3 insertions, 637 deletions

diff --git a/nuttx/arch/arm/src/common/up_blocktask.c b/nuttx/arch/arm/src/common/up_blocktask.c
deleted file mode 100644
index f4e31526b..000000000
--- a/nuttx/arch/arm/src/common/up_blocktask.c
+++ /dev/null
@@ -1,167 +0,0 @@
-/****************************************************************************
- * arch/arm/src/common/up_blocktask.c
- *
- *   Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-#include <sys/types.h>
-
-#include <sched.h>
-#include <debug.h>
-
-#include <nuttx/arch.h>
-
-#include "os_internal.h"
-#include "up_internal.h"
-
-/****************************************************************************
- * Private Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: up_block_task
- *
- * Description:
- *   The currently executing task at the head of
- *   the ready to run list must be stopped.  Save its context
- *   and move it to the inactive list specified by task_state.
- *
- * Inputs:
- *   tcb: Refers to a task in the ready-to-run list (normally
- *     the task at the head of the list).  It most be
- *     stopped, its context saved and moved into one of the
- *     waiting task lists.  It it was the task at the head
- *     of the ready-to-run list, then a context to the new
- *     ready to run task must be performed.
- *   task_state: Specifies which waiting task list should be
- *     hold the blocked task TCB.
- *
- ****************************************************************************/
-
-void up_block_task(_TCB *tcb, tstate_t task_state)
-{
-  /* Verify that the context switch can be performed */
-
-  if ((tcb->task_state < FIRST_READY_TO_RUN_STATE) ||
-      (tcb->task_state > LAST_READY_TO_RUN_STATE))
-    {
-      PANIC(OSERR_BADBLOCKSTATE);
-    }
-  else
-    {
-      _TCB *rtcb = (_TCB*)g_readytorun.head;
-      boolean switch_needed;
-
-      /* Remove the tcb task from the ready-to-run list.  If we
-       * are blocking the task at the head of the task list (the
-       * most likely case), then a context switch to the next
-       * ready-to-run task is needed. In this case, it should
-       * also be true that rtcb == tcb.
-       */
-
-      switch_needed = sched_removereadytorun(tcb);
-
-      /* Add the task to the specified blocked task list */
-
-      sched_addblocked(tcb, (tstate_t)task_state);
-
-      /* If there are any pending tasks, then add them to the g_readytorun
-       * task list now
-       */
-
-      if (g_pendingtasks.head)
-        {
-          switch_needed |= sched_mergepending();
-        }
-
-      /* Now, perform the context switch if one is needed */
-
-      if (switch_needed)
-        {
-          /* Are we in an interrupt handler? */
-
-          if (current_regs)
-            {
-              /* Yes, then we have to do things differently.
-               * Just copy the current_regs into the OLD rtcb.
-               */
-
-               up_savestate(rtcb->xcp.regs);
-
-              /* Restore the exception context of the rtcb at the (new) head 
-               * of the g_readytorun task list.
-               */
-
-              rtcb = (_TCB*)g_readytorun.head;
-
-              /* Then switch contexts */
-
-              up_restorestate(rtcb->xcp.regs);
-            }
-
-          /* Copy the user C context into the TCB at the (old) head of the
-           * g_readytorun Task list. if up_saveusercontext returns a non-zero
-           * value, then this is really the previously running task restarting!
-           */
-
-          else if (!up_saveusercontext(rtcb->xcp.regs))
-            {
-              /* Restore the exception context of the rtcb at the (new) head 
-               * of the g_readytorun task list.
-               */
-
-              rtcb = (_TCB*)g_readytorun.head;
-
-              /* Then switch contexts */
-
-              up_fullcontextrestore(rtcb->xcp.regs);
-            }
-        }
-    }
-}
diff --git a/nuttx/arch/arm/src/common/up_internal.h b/nuttx/arch/arm/src/common/up_internal.h
index 5442f5914..ee5864794 100644
--- a/nuttx/arch/arm/src/common/up_internal.h
+++ b/nuttx/arch/arm/src/common/up_internal.h
@@ -155,9 +155,10 @@ extern uint32 _ebss;            /* End+1 of .bss */
 extern void up_boot(void);
 extern void up_copystate(uint32 *dest, uint32 *src);
 extern void up_decodeirq(uint32 *regs);
-extern void up_fullcontextrestore(uint32 *regs) __attribute__ ((noreturn));
 extern void up_irqinitialize(void);
-extern int  up_saveusercontext(uint32 *regs);
+extern int  up_saveusercontext(uint32 *saveregs);
+extern void up_fullcontextrestore(uint32 *restoreregs) __attribute__ ((noreturn));
+extern void up_switchcontext(uint32 *saveregs, uint32 *restoreregs);
 extern void up_sigdeliver(void);
 extern int  up_timerisr(int irq, uint32 *regs);
 extern void up_lowputc(char ch);
diff --git a/nuttx/arch/arm/src/common/up_releasepending.c b/nuttx/arch/arm/src/common/up_releasepending.c
deleted file mode 100644
index d81479e87..000000000
--- a/nuttx/arch/arm/src/common/up_releasepending.c
+++ /dev/null
@@ -1,131 +0,0 @@
-/****************************************************************************
- *  arch/arm/src/common/up_releasepending.c
- *
- *   Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-#include <sys/types.h>
-#include <sched.h>
-#include <debug.h>
-#include <nuttx/arch.h>
-#include "os_internal.h"
-#include "up_internal.h"
-
-/****************************************************************************
- * Private Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: up_release_pending
- *
- * Description:
- *   Release and ready-to-run tasks that have
- *   collected in the pending task list.  This can call a
- *   context switch if a new task is placed at the head of
- *   the ready to run list.
- *
- ****************************************************************************/
-
-void up_release_pending(void)
-{
-  _TCB *rtcb = (_TCB*)g_readytorun.head;
-
-  slldbg("From TCB=%p\n", rtcb);
-
-  /* Merge the g_pendingtasks list into the g_readytorun task list */
-
-  /* sched_lock(); */
-  if (sched_mergepending())
-    {
-      /* The currently active task has changed!  We will need to
-       * switch contexts.  First check if we are operating in
-       * interrupt context:
-       */
-
-      if (current_regs)
-        {
-          /* Yes, then we have to do things differently.
-           * Just copy the current_regs into the OLD rtcb.
-           */
-
-           up_savestate(rtcb->xcp.regs);
-
-          /* Restore the exception context of the rtcb at the (new) head 
-           * of the g_readytorun task list.
-           */
-
-          rtcb = (_TCB*)g_readytorun.head;
-          slldbg("New Active Task TCB=%p\n", rtcb);
-
-          /* Then switch contexts */
-
-          up_restorestate(rtcb->xcp.regs);
-        }
-
-      /* Copy the exception context into the TCB of the task that
-       * was currently active. if up_saveusercontext returns a non-zero
-       * value, then this is really the previously running task 
-       * restarting!
-       */
-
-      else if (!up_saveusercontext(rtcb->xcp.regs))
-        {
-          /* Restore the exception context of the rtcb at the (new) head 
-           * of the g_readytorun task list.
-           */
-
-          rtcb = (_TCB*)g_readytorun.head;
-          slldbg("New Active Task TCB=%p\n", rtcb);
-
-           /* Then switch contexts */
-
-          up_fullcontextrestore(rtcb->xcp.regs);
-        }
-    }
-}
diff --git a/nuttx/arch/arm/src/common/up_reprioritizertr.c b/nuttx/arch/arm/src/common/up_reprioritizertr.c
deleted file mode 100644
index 684ff7f43..000000000
--- a/nuttx/arch/arm/src/common/up_reprioritizertr.c
+++ /dev/null
@@ -1,179 +0,0 @@
-/****************************************************************************
- *  arch/arm/src/common/up_reprioritizertr.c
- *
- *   Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-#include <sys/types.h>
-#include <sched.h>
-#include <debug.h>
-#include <nuttx/arch.h>
-#include "os_internal.h"
-#include "up_internal.h"
-
-/****************************************************************************
- * Private Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: up_reprioritize_rtr
- *
- * Description:
- *   Called when the priority of a running or
- *   ready-to-run task changes and the reprioritization will 
- *   cause a context switch.  Two cases:
- *
- *   1) The priority of the currently running task drops and the next
- *      task in the ready to run list has priority.
- *   2) An idle, ready to run task's priority has been raised above the
- *      the priority of the current, running task and it now has the
- *      priority.
- *
- * Inputs:
- *   tcb: The TCB of the task that has been reprioritized
- *   priority: The new task priority
- *
- ****************************************************************************/
-
-void up_reprioritize_rtr(_TCB *tcb, ubyte priority)
-{
-  /* Verify that the caller is sane */
-
-  if (tcb->task_state < FIRST_READY_TO_RUN_STATE ||
-      tcb->task_state > LAST_READY_TO_RUN_STATE ||
-      priority < SCHED_PRIORITY_MIN || 
-      priority > SCHED_PRIORITY_MAX)
-    {
-       PANIC(OSERR_BADREPRIORITIZESTATE);
-    }
-  else
-    {
-      _TCB *rtcb = (_TCB*)g_readytorun.head;
-      boolean switch_needed;
-
-      slldbg("TCB=%p PRI=%d\n", tcb, priority);
-
-      /* Remove the tcb task from the ready-to-run list.
-       * sched_removereadytorun will return TRUE if we just
-       * remove the head of the ready to run list.
-       */
-
-      switch_needed = sched_removereadytorun(tcb);
-
-      /* Setup up the new task priority */
-
-      tcb->sched_priority = (ubyte)priority;
-
-      /* Return the task to the specified blocked task list.
-       * sched_addreadytorun will return TRUE if the task was
-       * added to the new list.  We will need to perform a context
-       * switch only if the EXCLUSIVE or of the two calls is non-zero
-       * (i.e., one and only one the calls changes the head of the
-       * ready-to-run list).
-       */
-
-      switch_needed ^= sched_addreadytorun(tcb);
-
-      /* Now, perform the context switch if one is needed */
-
-      if (switch_needed)
-        {
-          /* If we are going to do a context switch, then now is the right
-           * time to add any pending tasks back into the ready-to-run list.
-           * task list now
-           */
-
-          if (g_pendingtasks.head)
-            {
-              sched_mergepending();
-            }
-
-         /* Are we in an interrupt handler? */
-
-          if (current_regs)
-            {
-              /* Yes, then we have to do things differently.
-               * Just copy the current_regs into the OLD rtcb.
-               */
-
-               up_savestate(rtcb->xcp.regs);
-
-              /* Restore the exception context of the rtcb at the (new) head 
-               * of the g_readytorun task list.
-               */
-
-              rtcb = (_TCB*)g_readytorun.head;
-              slldbg("New Active Task TCB=%p\n", rtcb);
-
-              /* Then switch contexts */
-
-              up_restorestate(rtcb->xcp.regs);
-            }
-
-          /* Copy the exception context into the TCB at the (old) head of the
-           * g_readytorun Task list. if up_saveusercontext returns a non-zero
-           * value, then this is really the previously running task restarting!
-           */
-
-          else if (!up_saveusercontext(rtcb->xcp.regs))
-            {
-              /* Restore the exception context of the rtcb at the (new) head 
-               * of the g_readytorun task list.
-               */
-
-              rtcb = (_TCB*)g_readytorun.head;
-              slldbg("New Active Task TCB=%p\n", rtcb);
-
-              /* Then switch contexts */
-
-              up_fullcontextrestore(rtcb->xcp.regs);
-            }
-        }
-    }
-}
diff --git a/nuttx/arch/arm/src/common/up_unblocktask.c b/nuttx/arch/arm/src/common/up_unblocktask.c
deleted file mode 100644
index ea64ed1c6..000000000
--- a/nuttx/arch/arm/src/common/up_unblocktask.c
+++ /dev/null
@@ -1,158 +0,0 @@
-/****************************************************************************
- *  arch/arm/src/common/up_unblocktask.c
- *
- *   Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
- *   Author: Gregory Nutt <spudmonkey@racsa.co.cr>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in
- *    the documentation and/or other materials provided with the
- *    distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- *    used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
-
-/****************************************************************************
- * Included Files
- ****************************************************************************/
-
-#include <nuttx/config.h>
-#include <sys/types.h>
-#include <sched.h>
-#include <debug.h>
-#include <nuttx/arch.h>
-#include "os_internal.h"
-#include "clock_internal.h"
-#include "up_internal.h"
-
-/****************************************************************************
- * Private Definitions
- ****************************************************************************/
-
-/****************************************************************************
- * Private Data
- ****************************************************************************/
-
-/****************************************************************************
- * Private Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Public Functions
- ****************************************************************************/
-
-/****************************************************************************
- * Name: up_unblock_task
- *
- * Description:
- *   A task is currently in an inactive task list
- *   but has been prepped to execute.  Move the TCB to the
- *   ready-to-run list, restore its context, and start execution.
- *
- * Inputs:
- *   tcb: Refers to the tcb to be unblocked.  This tcb is
- *     in one of the waiting tasks lists.  It must be moved to
- *     the ready-to-run list and, if it is the highest priority
- *     ready to run taks, executed.
- *
- ****************************************************************************/
-
-void up_unblock_task(_TCB *tcb)
-{
-  /* Verify that the context switch can be performed */
-
-  if ((tcb->task_state < FIRST_BLOCKED_STATE) ||
-      (tcb->task_state > LAST_BLOCKED_STATE))
-    {
-      PANIC(OSERR_BADUNBLOCKSTATE);
-    }
-  else
-    {
-      _TCB *rtcb = (_TCB*)g_readytorun.head;
-
-      /* Remove the task from the blocked task list */
-
-      sched_removeblocked(tcb);
-
-      /* Reset its timeslice.  This is only meaningful for round
-       * robin tasks but it doesn't here to do it for everything
-       */
-
-#if CONFIG_RR_INTERVAL > 0
-      tcb->timeslice = CONFIG_RR_INTERVAL / MSEC_PER_TICK;
-#endif
-
-      /* Add the task in the correct location in the prioritized
-       * g_readytorun task list
-       */
-
-      if (sched_addreadytorun(tcb))
-        {
-          /* The currently active task has changed! We need to do
-           * a context switch to the new task.
-           *
-           * Are we in an interrupt handler? 
-           */
-
-          if (current_regs)
-            {
-              /* Yes, then we have to do things differently.
-               * Just copy the current_regs into the OLD rtcb.
-               */
-
-               up_savestate(rtcb->xcp.regs);
-
-              /* Restore the exception context of the rtcb at the (new) head 
-               * of the g_readytorun task list.
-               */
-
-              rtcb = (_TCB*)g_readytorun.head;
-
-              /* Then switch contexts */
-
-              up_restorestate(rtcb->xcp.regs);
-            }
-
-          /* We are not in an interrupt handler.  Copy the user C context
-           * into the TCB of the task that was previously active.  if 
-           * up_saveusercontext returns a non-zero value, then this is really the
-           * previously running task restarting!
-           */
-
-          else if (!up_saveusercontext(rtcb->xcp.regs))
-            {
-              /* Restore the exception context of the new task that is ready to
-               * run (probably tcb).  This is the new rtcb at the head of the
-               * g_readytorun task list.
-               */
-
-              rtcb = (_TCB*)g_readytorun.head;
-
-              /* Then switch contexts */
-
-              up_fullcontextrestore(rtcb->xcp.regs);
-            }
-        }
-    }
-}