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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@597 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2008-01-31 22:19:53 +00:00
parent 94ef1222d8
commit 3dc0fee9ba
8 changed files with 133 additions and 145 deletions
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5
TODO
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@ -383,6 +383,7 @@ o z16 (arch/z16)
Priority: Medium. A polled, write-only serial driver is used in the
interim for system testing.
Description: Signals are not functional
Description: The system delays do not appear to be correct with the
examples/ostest/timedmqueue.c test.
Status: Open
Priority: Medium
Priority: Medium-High

2
arch/z16/src/common/up_internal.h
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@ -73,7 +73,7 @@
#define IN_INTERRUPT (current_regs != NULL)
#define SAVE_IRQCONTEXT(tcb) up_copystate((tcb)->xcp.regs, current_regs)
#define SET_IRQCONTEXT(tcb) up_copystate(current_regs, (tcb)->xcp.regs)
#define SET_IRQCONTEXT(tcb) do { current_regs = (tcb)->xcp.regs; } while (0)
#define SAVE_USERCONTEXT(tcb) up_saveusercontext((tcb)->xcp.regs)
#define RESTORE_USERCONTEXT(tcb) up_restoreusercontext((tcb)->xcp.regs)
#define SIGNAL_RETURN(regs) up_restoreusercontext(regs)

27
arch/z16/src/common/up_schedulesigaction.c
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@ -133,19 +133,19 @@ void up_schedule_sigaction(FAR _TCB *tcb, sig_deliver_t sigdeliver)
sigdeliver(tcb);
}
/* CASE 2: We are in an interrupt handler AND the
* interrupted task is the same as the one that
* must receive the signal, then we will have to modify
* the return state as well as the state in the TCB.
/* CASE 2: We are in an interrupt handler AND the interrupted
* task is the same as the one that must receive the signal, then
* we will have to modify the return state as well as the state
* in the TCB.
*/
else
{
FAR uint32 *current_pc = (FAR uint32*)&current_regs[REG_PC];
/* Save the return address and interrupt state.
* These will be restored by the signal trampoline after
* the signals have been delivered.
/* Save the return address and interrupt state. These will be
* restored by the signal trampoline after the signals have
* been delivered.
*/
tcb->xcp.sigdeliver = sigdeliver;
@ -159,23 +159,22 @@ void up_schedule_sigaction(FAR _TCB *tcb, sig_deliver_t sigdeliver)
*current_pc = (uint32)up_sigdeliver;
current_regs[REG_FLAGS] = 0;
/* And make sure that the saved context in the TCB
* is the same as the interrupt return context.
/* And make sure that the saved context in the TCB is the
* same as the interrupt return context.
*/
up_copystate(tcb->xcp.regs, current_regs);
}
}
/* Otherwise, we are (1) signaling a task is not running
* from an interrupt handler or (2) we are not in an
* interrupt handler and the running task is signalling
* some non-running task.
/* Otherwise, we are (1) signaling a task is not running from an
* interrupt handler or (2) we are not in an interrupt handler
* and the running task is signalling some non-running task.
*/
else
{
uint32 *saved_pc = (uint32*)&tcb->xcp.regs[REG_PC];
FAR uint32 *saved_pc = (FAR uint32*)&tcb->xcp.regs[REG_PC];
/* Save the return lr and cpsr and one scratch register
* These will be restored by the signal trampoline after

21
arch/z16/src/common/up_sigdeliver.c
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@ -72,10 +72,9 @@
* Name: up_sigdeliver
*
* Description:
* This is the a signal handling trampoline. When a
* signal action was posted. The task context was mucked
* with and forced to branch to this location with interrupts
* disabled.
* This is the a signal handling trampoline. When a signal action was
* posted. The task context was mucked with and forced to branch to this
* location with interrupts disabled.
*
****************************************************************************/
@ -106,10 +105,9 @@ void up_sigdeliver(void)
regs32[REG_PC/2] = rtcb->xcp.saved_pc;
regs[REG_FLAGS] = rtcb->xcp.saved_i;
/* Get a local copy of the sigdeliver function pointer.
* we do this so that we can nullify the sigdeliver
* function point in the TCB and accept more signal
* deliveries while processing the current pending
/* Get a local copy of the sigdeliver function pointer. We do this so
* that we can nullify the sigdeliver function point in the TCB and
* accept more signal deliveries while processing the current pending
* signals.
*/
@ -127,10 +125,9 @@ void up_sigdeliver(void)
sigdeliver(rtcb);
/* Output any debug messaged BEFORE restoring errno
* (because they may alter errno), then restore the
* original errno that is needed by the user logic
* (it is probably EINTR).
/* Output any debug messaged BEFORE restoring errno (because they may
* alter errno), then restore the original errno that is needed by
* the user logic (it is probably EINTR).
*/
dbg("Resuming\n");

2
arch/z16/src/z16f/z16f_head.S
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@ -456,7 +456,7 @@ _common_isr:
* to use to return from the interrupt in r0. This may or may not be the
* same value as sp.
*/
cp r0, sp /* Check if we are performing a context switch */
jp nz, _common_switch /* Jump if yes, else use faster return */
popmhi <r8-r14> /* Restore r8-r14 */

215
arch/z16/src/z16f/z16f_restoreusercontext.S
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@ -1,112 +1,103 @@
/*************************************************************************
* arch/z16/src/z16f/z16f_restoreusercontext.asm
*
* Copyright (C) 2008 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 <arch/irq.h>
#include "chip/chip.h"
/*************************************************************************
* External References / External Definitions
*************************************************************************/
xdef _up_restoreusercontext
/*************************************************************************
* Data Allocation
*************************************************************************/
define CODESEG, SPACE=EROM
segment CODESEG
/*************************************************************************
* Code
*************************************************************************/
/*************************************************************************
* Name: up_restoreusercontext
*
* Description:
* Restore the current user context.
*
* Parameters:
* r1: pointer to the register save array in the XCPT structure
*
*************************************************************************/
_up_restoreusercontext:
/* Disable interrupts while we are accessing the TCB's register
* save structure
*/
di
/* Set up the stack for return */
ld sp, 2*REG_SP(r1) /* sp=Value of SP on return */
ld r2, 2*REG_PC(r1) /* r2=return address */
push r2 /* Push the return address onto the stack */
ld r7, 2*REG_R7(r1) /* r7=saved value of r7 */
push r7 /* Save this so that we can use r7 */
ld r7, sp /* r7=saved SP value */
/* Retore r8-r14 */
ld sp, r1 /* sp=Points to register save structure */
popmhi <r8-r14> /* Restore r8-r14 */
add sp, #4 /* Skip over r15=sp */
/* Test if interrupts should be enabled upon return */
ld.w r2, 2*REG_FLAGS(r1) /* r2=padded flags value */
tm r2, #Z16F_CNTRL_FLAGS_IRQE /* Test IRQE bit (Z-bit == 0 if disabled) */
popmlo <r0-r6> /* Restore r0-r6 (retains Z-bit) */
ld sp, r7 /* Recover the correct SP value (retains Z-bit) */
pop r7 /* Get the saved value of r7 (retains Z-bit)*/
jp z, _up_returndisabled /* Jump if interrupts should remain disabled */
/* Return with interrupts enabled. Note that at this point in the logic,
* we are finished accessing the TCB. Therefore, any interrupt level context
* switches that may modify the TCB should be OK
*/
ei /* Enable interrupts */
_up_returndisabled:
ret
end
/*************************************************************************
* arch/z16/src/z16f/z16f_restoreusercontext.asm
*
* Copyright (C) 2008 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 <arch/irq.h>
#include "chip/chip.h"
/*************************************************************************
* External References / External Definitions
*************************************************************************/
xdef _up_restoreusercontext
/*************************************************************************
* Data Allocation
*************************************************************************/
define CODESEG, SPACE=EROM
segment CODESEG
/*************************************************************************
* Code
*************************************************************************/
/*************************************************************************
* Name: up_restoreusercontext
*
* Description:
* Restore the current user context.
*
* Parameters:
* r1: pointer to the register save array in the XCPT structure
*
*************************************************************************/
_up_restoreusercontext:
/* Disable interrupts while we are accessing the TCB's register
* save structure. The correct interrupt state will be retored by
* the iret instruction below
*/
di
/* Set up the stack for return from 'interrupt' */
ld sp, 2*REG_SP(r1) /* sp=Value of SP on return */
ld.w r2, 2*REG_FLAGS(r1) /* r1=padded flags value */
push.w r2 /* Push padded flags value onto the stack */
ld r2, 2*REG_PC(r1) /* r2=return address */
push r2 /* Push the return address onto the stack */
ld r7, 2*REG_R7(r1) /* r7=saved value of r7 */
push r7 /* Save this so that we can use r7 */
ld r7, sp /* r7=saved SP value */
/* Restore registers and return from interrupt */
ld sp, r1 /* sp=Pointer to register save structure */
popmhi <r8-r14> /* Restore r8-r14 */
add sp, #4 /* Skip over restore of r15=sp */
popmlo <r0-r6> /* Restore r0-r6 */
ld sp, r7 /* Switch to the correct stack for return */
pop r7 /* Recover the saved value of r7 from the stack */
iret2 /* Return from interrupt */
end

4
examples/ostest/timedmqueue.c
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@ -1,5 +1,5 @@
/**************************************************************************
* mqueue.c
* examples/ostest/mqueue.c
*
* Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
@ -380,7 +380,7 @@ void timedmqueue_test(void)
/* Wait for the receiving thread to complete */
printf("timedmqueue_test: Waiting for sender to complete\n");
printf("timedmqueue_test: Waiting for receiver to complete\n");
pthread_join(receiver, &result);
if (result != (void*)0)
{

2
include/nuttx/compiler.h
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@ -263,7 +263,7 @@
# define FAR _Far
# define NEAR _Near
# define DSEG _Far
# define CODE _Far
# define CODE _Erom
/* Select the large, 32-bit addressing model */