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Implement a simple vfork(). ARM only for now

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git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5486 42af7a65-404d-4744-a932-0658087f49c3
This commit is contained in:
patacongo 2013-01-07 15:20:21 +00:00
parent b4d999e963
commit c82c7095f9
19 changed files with 389 additions and 52 deletions
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3
ChangeLog
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@ -3878,5 +3878,6 @@
* sched/os_bringup.c: Remove support for CONFIG_BUILTIN_APP_START.
This is not really a useful feature and creates a violation of the
OS layered architecture.
* include/unistd.h, arch/arch/src/*: Implement a simple vfork().
On initial checkin, this API is available only for ARM platforms.

92
arch/arm/src/arm/up_vfork.S Normal file
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@ -0,0 +1,92 @@
/************************************************************************************
* arch/arm/src/arm/up_vfork.S
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Global Symbols
************************************************************************************/
.file "up_vfork.S"
.globl __vfork
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: vfork
*
* Description:
* The vfork() function has the same effect as fork(), except that the behavior is
* undefined if the process created by vfork() either modifies any data other than
* a variable of type pid_t used to store the return value from vfork(), or returns
* from the function in which vfork() was called, or calls any other function before
* successfully calling _exit() or one of the exec family of functions.
*
* This thin layer implements vfork by simply calling __vfork() with the vfork()
* return address as an argument.
*
* Input Paremeters:
* None
*
* Return:
* Upon successful completion, vfork() returns 0 to the child process and returns
* the process ID of the child process to the parent process. Otherwise, -1 is
* returned to the parent, no child process is created, and errno is set to
* indicate the error.
*
************************************************************************************/
.globl vfork
.type vfork, function
vfork:
/* I know, I could have used the GCC's return address builtin and done this all
* in C. But this works even if there is no builtin.
*/
mov r0, lr
b __vfork
.size vfork, .-vfork
.end

96
arch/arm/src/armv7-m/up_vfork.S Normal file
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@ -0,0 +1,96 @@
/************************************************************************************
* arch/arm/src/armv7-m/up_vfork.S
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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>
/************************************************************************************
* Pre-processor Definitions
************************************************************************************/
/************************************************************************************
* Global Symbols
************************************************************************************/
.syntax unified
.thumb
.file "up_vfork.S"
.globl __vfork
/************************************************************************************
* Public Functions
************************************************************************************/
/************************************************************************************
* Name: vfork
*
* Description:
* The vfork() function has the same effect as fork(), except that the behavior is
* undefined if the process created by vfork() either modifies any data other than
* a variable of type pid_t used to store the return value from vfork(), or returns
* from the function in which vfork() was called, or calls any other function before
* successfully calling _exit() or one of the exec family of functions.
*
* This thin layer implements vfork by simply calling __vfork() with the vfork()
* return address as an argument.
*
* Input Paremeters:
* None
*
* Return:
* Upon successful completion, vfork() returns 0 to the child process and returns
* the process ID of the child process to the parent process. Otherwise, -1 is
* returned to the parent, no child process is created, and errno is set to
* indicate the error.
*
************************************************************************************/
.thumb_func
.globl vfork
.type vfork, function
vfork:
/* I know, I could have used the GCC's return address builtin and done this all
* in C. But this works even if there is no builtin.
*/
mov r0, lr
b __vfork
.size vfork, .-vfork
.end

6
arch/arm/src/c5471/Make.defs
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@ -1,7 +1,7 @@
############################################################################
# c5471/Make.defs
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Copyright (C) 2007, 2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -35,14 +35,14 @@
HEAD_ASRC = up_nommuhead.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_vfork.S
CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c up_doirq.c \
up_exit.c up_idle.c up_initialize.c up_initialstate.c \
up_interruptcontext.c up_prefetchabort.c up_releasepending.c \
up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c \
up_sigdeliver.c up_syscall.c up_unblocktask.c \
up_undefinedinsn.c up_usestack.c
up_undefinedinsn.c up_usestack.c up__vfork.c
ifeq ($(CONFIG_ELF),y)
CMN_CSRCS += up_elf.c

6
arch/arm/src/calypso/Make.defs
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@ -1,7 +1,7 @@
############################################################################
# calypso/Make.defs
#
# Copyright (C) 2007 Gregory Nutt. All rights reserved.
# Copyright (C) 2007, 2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Copyright (C) 2011 Stefan Richter. All rights reserved.
@ -39,14 +39,14 @@
HEAD_ASRC = calypso_head.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_vectors.S \
up_nommuhead.S
up_nommuhead.S up_vfork.S
CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c up_doirq.c \
up_exit.c up_idle.c up_initialstate.c up_initialize.c \
up_interruptcontext.c up_prefetchabort.c up_releasepending.c \
up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c \
up_sigdeliver.c up_syscall.c up_unblocktask.c \
up_undefinedinsn.c up_usestack.c calypso_power.c
up_undefinedinsn.c up_usestack.c calypso_power.c up__vfork.c
ifeq ($(CONFIG_ELF),y)
CMN_CSRCS += up_elf.c

134
arch/arm/src/common/up__vfork.c Normal file
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@ -0,0 +1,134 @@
/****************************************************************************
* arch/arm/src/common/up__vfork
*
* Copyright (C) 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <sched.h>
#include <nuttx/sched.h>
#include "os_internal.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* ARM requires at least a 4-byte stack alignment. For use with EABI and
* floating point, the stack must be aligned to 8-byte addresses.
*/
#ifndef CONFIG_STACK_ALIGNMENT
/* The symbol __ARM_EABI__ is defined by GCC if EABI is being used. If you
* are not using GCC, make sure that CONFIG_STACK_ALIGNMENT is set correctly!
*/
# ifdef __ARM_EABI__
# define CONFIG_STACK_ALIGNMENT 8
# else
# define CONFIG_STACK_ALIGNMENT 4
# endif
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: __vfork
*
* Description:
* The vfork() function has the same effect as fork(), except that the
* behavior is undefined if the process created by vfork() either modifies
* any data other than a variable of type pid_t used to store the return
* value from vfork(), or returns from the function in which vfork() was
* called, or calls any other function before successfully calling _exit()
* or one of the exec family of functions.
*
* This thin layer starts the vfork child by simply spawning a new thread
* that begins at the return address of vfork().
*
* Input Paremeters:
* retaddr - The return address of vfork()
*
* Return:
* Upon successful completion, vfork() returns 0 to the child process and
* returns the process ID of the child process to the parent process.
* Otherwise, -1 is returned to the parent, no child process is created,
* and errno is set to indicate the error.
*
****************************************************************************/
pid_t __vfork(uint32_t retaddr)
{
FAR _TCB *parent = (FAR _TCB *)g_readytorun.head;
size_t stacksize;
int priority;
/* Get the size of the parent task's stack. Due to alignment operations,
* the adjusted stack size may be smaller than the stack size originally
* requrested.
*/
stacksize = parent->adj_stack_size + CONFIG_STACK_ALIGNMENT - 1;
/* Get the current priority of the parent task */
#ifdef CONFIG_PRIORITY_INHERITANCE
priority = parent->base_priority; /* "Normal," unboosted priority */
#else
priority = parent->sched_priority; /* Current priority */
#endif
/* Start the child thread at the vfork return address. TASK_CREATE will
* return the PID of the new thread. Otherwise a negative value will be
* returned and the errno will be set appropriately.
*
* When the registers are initialized, the return value in R0 should be
* cleared to zero, providing the indication to the newly started child
* thread.
*/
return TASK_CREATE("init", priority, stacksize, (main_t)retaddr,
(const char **)NULL);
}

6
arch/arm/src/dm320/Make.defs
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@ -1,7 +1,7 @@
############################################################################
# dm320/Make.defs
#
# Copyright (C) 2007, 2010 Gregory Nutt. All rights reserved.
# Copyright (C) 2007, 2010, 2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -36,14 +36,14 @@
HEAD_ASRC = up_head.S
CMN_ASRCS = up_cache.S up_fullcontextrestore.S up_saveusercontext.S \
up_vectors.S up_vectoraddrexcptn.S up_vectortab.S
up_vectors.S up_vectoraddrexcptn.S up_vectortab.S up_vfork.S
CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
up_dataabort.c up_mdelay.c up_udelay.c up_exit.c up_idle.c \
up_initialize.c up_initialstate.c up_interruptcontext.c \
up_prefetchabort.c up_releasepending.c up_releasestack.c \
up_reprioritizertr.c up_schedulesigaction.c \
up_sigdeliver.c up_syscall.c up_unblocktask.c \
up_undefinedinsn.c up_usestack.c
up_undefinedinsn.c up_usestack.c up__vfork.c
ifeq ($(CONFIG_ELF),y)
CMN_CSRCS += up_elf.c

6
arch/arm/src/imx/Make.defs
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@ -1,7 +1,7 @@
############################################################################
# arch/arm/src/imx/Make.defs
#
# Copyright (C) 2009 Gregory Nutt. All rights reserved.
# Copyright (C) 2009, 2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -36,14 +36,14 @@
HEAD_ASRC = up_head.S
CMN_ASRCS = up_cache.S up_fullcontextrestore.S up_saveusercontext.S \
up_vectors.S up_vectoraddrexcptn.S up_vectortab.S
up_vectors.S up_vectoraddrexcptn.S up_vectortab.S up_vfork.S
CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
up_dataabort.c up_mdelay.c up_udelay.c up_exit.c up_idle.c \
up_initialize.c up_initialstate.c up_interruptcontext.c \
up_prefetchabort.c up_releasepending.c up_releasestack.c \
up_reprioritizertr.c up_schedulesigaction.c \
up_sigdeliver.c up_syscall.c up_unblocktask.c \
up_undefinedinsn.c up_usestack.c
up_undefinedinsn.c up_usestack.c up__vfork.c
ifeq ($(CONFIG_ELF),y)
CMN_CSRCS += up_elf.c

8
arch/arm/src/kinetis/Make.defs
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@ -1,7 +1,7 @@
############################################################################
# arch/arm/src/kinetis/Make.defs
#
# Copyright (C) 2011 Gregory Nutt. All rights reserved.
# Copyright (C) 2011, 2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -39,14 +39,16 @@ HEAD_ASRC = kinetis_vectors.S
# Common ARM and Cortex-M3 files
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S \
up_vfork.S
CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
up_createstack.c up_mdelay.c up_udelay.c up_exit.c up_initialize.c \
up_memfault.c up_initialstate.c up_interruptcontext.c \
up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c \
up_releasepending.c up_sigdeliver.c up_unblocktask.c up_usestack.c \
up_doirq.c up_hardfault.c up_svcall.c up_checkstack.c
up_doirq.c up_hardfault.c up_svcall.c up_checkstack.c \
up__vfork.c
ifeq ($(CONFIG_ARCH_MEMCPY),y)
CMN_ASRCS += up_memcpy.S

8
arch/arm/src/lm3s/Make.defs
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@ -1,7 +1,7 @@
############################################################################
# arch/arm/src/lm3s/Make.defs
#
# Copyright (C) 2009-2011 Gregory Nutt. All rights reserved.
# Copyright (C) 2009-2011, 2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -35,14 +35,16 @@
HEAD_ASRC = lm3s_vectors.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S \
up_vfork.S
CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
up_createstack.c up_mdelay.c up_udelay.c up_exit.c \
up_idle.c up_initialize.c up_initialstate.c up_interruptcontext.c \
up_memfault.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
up_releasepending.c up_releasestack.c up_reprioritizertr.c \
up_schedulesigaction.c up_sigdeliver.c up_unblocktask.c \
up_usestack.c up_doirq.c up_hardfault.c up_svcall.c
up_usestack.c up_doirq.c up_hardfault.c up_svcall.c \
up__vfork.c
ifeq ($(CONFIG_ARCH_MEMCPY),y)
CMN_ASRCS += up_memcpy.S

7
arch/arm/src/lpc17xx/Make.defs
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@ -1,7 +1,7 @@
############################################################################
# arch/arm/src/lpc17xx/Make.defs
#
# Copyright (C) 2010-2011 Gregory Nutt. All rights reserved.
# Copyright (C) 2010-2011, 2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -39,14 +39,15 @@ HEAD_ASRC = lpc17_vectors.S
# Common ARM and Cortex-M3 files
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S \
up_vfork.S
CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
up_mdelay.c up_udelay.c up_exit.c up_initialize.c up_memfault.c \
up_initialstate.c up_interruptcontext.c up_modifyreg8.c \
up_modifyreg16.c up_modifyreg32.c up_releasepending.c \
up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c \
up_sigdeliver.c up_unblocktask.c up_usestack.c up_doirq.c \
up_hardfault.c up_svcall.c up_checkstack.c
up_hardfault.c up_svcall.c up_checkstack.c up__vfork.c
ifeq ($(CONFIG_ARCH_MEMCPY),y)
CMN_ASRCS += up_memcpy.S

7
arch/arm/src/lpc214x/Make.defs
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@ -1,7 +1,7 @@
##############################################################################
# lpc214x/Make.defs
#
# Copyright (C) 2007, 2008 Gregory Nutt. All rights reserved.
# Copyright (C) 2007, 2008, 2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -35,13 +35,14 @@
HEAD_ASRC = lpc214x_head.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_vectors.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_vectors.S \
up_vfork.S
CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c \
up_exit.c up_idle.c up_initialize.c up_initialstate.c \
up_interruptcontext.c up_prefetchabort.c up_releasepending.c \
up_releasestack.c up_reprioritizertr.c up_syscall.c up_unblocktask.c \
up_undefinedinsn.c up_usestack.c up_lowputs.c
up_undefinedinsn.c up_usestack.c up_lowputs.c up__vfork.c
ifneq ($(CONFIG_DISABLE_SIGNALS),y)
CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c

15
arch/arm/src/lpc2378/Make.defs
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@ -1,7 +1,7 @@
##############################################################################
# lpc23xx/Make.defs
#
# Copyright (C) 2010 Rommel Marcelo. All rights reserved.
# Copyright (C) 2010, 2013 Rommel Marcelo. All rights reserved.
# Author: Rommel Marcelo
#
# This file is part of the NuttX RTOS and based on the lpc2148 port:
@ -40,13 +40,14 @@
HEAD_ASRC = lpc23xx_head.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_vectors.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_vectors.S \
up_vfork.S
CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c \
up_exit.c up_idle.c up_initialize.c up_initialstate.c \
up_interruptcontext.c up_prefetchabort.c up_releasepending.c \
up_releasestack.c up_reprioritizertr.c up_syscall.c up_unblocktask.c \
up_undefinedinsn.c up_usestack.c up_lowputs.c
up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c \
up_exit.c up_idle.c up_initialize.c up_initialstate.c \
up_interruptcontext.c up_prefetchabort.c up_releasepending.c \
up_releasestack.c up_reprioritizertr.c up_syscall.c up_unblocktask.c \
up_undefinedinsn.c up_usestack.c up_lowputs.c up__vfork.c
ifneq ($(CONFIG_DISABLE_SIGNALS),y)
CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c

4
arch/arm/src/lpc31xx/Make.defs
View File

@ -36,7 +36,7 @@
HEAD_ASRC = up_head.S
CMN_ASRCS = up_cache.S up_fullcontextrestore.S up_saveusercontext.S \
up_vectors.S up_vectoraddrexcptn.S up_vectortab.S
up_vectors.S up_vectoraddrexcptn.S up_vectortab.S up_vfork.S
CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
up_dataabort.c up_mdelay.c up_udelay.c up_exit.c up_idle.c \
up_initialize.c up_initialstate.c up_interruptcontext.c \
@ -44,7 +44,7 @@ CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
up_prefetchabort.c up_releasepending.c up_releasestack.c \
up_reprioritizertr.c up_schedulesigaction.c \
up_sigdeliver.c up_syscall.c up_unblocktask.c \
up_undefinedinsn.c up_usestack.c
up_undefinedinsn.c up_usestack.c up__vfork.c
ifeq ($(CONFIG_PAGING),y)
CMN_CSRCS += up_pginitialize.c up_checkmapping.c up_allocpage.c up_va2pte.c

8
arch/arm/src/lpc43xx/Make.defs
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@ -1,7 +1,7 @@
############################################################################
# arch/arm/src/lpc43xx/Make.defs
#
# Copyright (C) 2012 Gregory Nutt. All rights reserved.
# Copyright (C) 2012-2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -36,13 +36,15 @@
HEAD_ASRC =
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
CMN_CSRCS += up_assert.c up_blocktask.c up_copystate.c
CMN_ASRCS += up_vfork.S
CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c
CMN_CSRCS += up_createstack.c up_mdelay.c up_udelay.c up_exit.c
CMN_CSRCS += up_initialize.c up_initialstate.c up_interruptcontext.c
CMN_CSRCS += up_memfault.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c
CMN_CSRCS += up_releasepending.c up_releasestack.c up_reprioritizertr.c
CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c up_unblocktask.c
CMN_CSRCS += up_usestack.c up_doirq.c up_hardfault.c up_svcall.c
CMN_CSRCS += up_usestack.c up_doirq.c up_hardfault.c up_svcall.c up__vfork.c
ifeq ($(CONFIG_ARMV7M_CMNVECTOR),y)
CMN_ASRCS += up_exception.S

7
arch/arm/src/sam3u/Make.defs
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@ -1,7 +1,7 @@
############################################################################
# arch/arm/src/sam3u/Make.defs
#
# Copyright (C) 2009-2011 Gregory Nutt. All rights reserved.
# Copyright (C) 2009-2011, 2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -39,14 +39,15 @@ HEAD_ASRC = sam3u_vectors.S
# Common ARM and Cortex-M3 files
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S \
up_vfork.S
CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c up_createstack.c \
up_mdelay.c up_udelay.c up_exit.c up_idle.c up_initialize.c \
up_initialstate.c up_interruptcontext.c up_memfault.c up_modifyreg8.c \
up_modifyreg16.c up_modifyreg32.c up_releasepending.c \
up_releasestack.c up_reprioritizertr.c up_schedulesigaction.c \
up_sigdeliver.c up_unblocktask.c up_usestack.c up_doirq.c \
up_hardfault.c up_svcall.c
up_hardfault.c up_svcall.c up__vfork.c
# Configuration-dependent common files

8
arch/arm/src/stm32/Make.defs
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@ -1,7 +1,7 @@
############################################################################
# arch/arm/src/stm32/Make.defs
#
# Copyright (C) 2009, 2011-2012 Gregory Nutt. All rights reserved.
# Copyright (C) 2009, 2011-2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -39,14 +39,16 @@ else
HEAD_ASRC = stm32_vectors.S
endif
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_switchcontext.S \
up_vfork.S
CMN_CSRCS = up_assert.c up_blocktask.c up_copystate.c \
up_createstack.c up_mdelay.c up_udelay.c up_exit.c \
up_initialize.c up_initialstate.c up_interruptcontext.c \
up_memfault.c up_modifyreg8.c up_modifyreg16.c up_modifyreg32.c \
up_releasepending.c up_releasestack.c up_reprioritizertr.c \
up_schedulesigaction.c up_sigdeliver.c up_systemreset.c \
up_unblocktask.c up_usestack.c up_doirq.c up_hardfault.c up_svcall.c
up_unblocktask.c up_usestack.c up_doirq.c up_hardfault.c \
up_svcall.c up__vfork.c
ifeq ($(CONFIG_ARMV7M_CMNVECTOR),y)
CMN_ASRCS += up_exception.S

15
arch/arm/src/str71x/Make.defs
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@ -1,7 +1,7 @@
##############################################################################
# arch/arm/src/str71x/Make.defs
#
# Copyright (C) 2008 Gregory Nutt. All rights reserved.
# Copyright (C) 2008, 2013 Gregory Nutt. All rights reserved.
# Author: Gregory Nutt <gnutt@nuttx.org>
#
# Redistribution and use in source and binary forms, with or without
@ -35,13 +35,14 @@
HEAD_ASRC = str71x_head.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_vectors.S
CMN_ASRCS = up_saveusercontext.S up_fullcontextrestore.S up_vectors.S \
up_vfork.S
CMN_CSRCS = up_allocateheap.c up_assert.c up_blocktask.c up_copystate.c \
up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c \
up_exit.c up_idle.c up_initialize.c up_initialstate.c \
up_interruptcontext.c up_prefetchabort.c up_releasepending.c \
up_releasestack.c up_reprioritizertr.c up_syscall.c up_unblocktask.c \
up_undefinedinsn.c up_usestack.c up_lowputs.c
up_createstack.c up_dataabort.c up_mdelay.c up_udelay.c \
up_exit.c up_idle.c up_initialize.c up_initialstate.c \
up_interruptcontext.c up_prefetchabort.c up_releasepending.c \
up_releasestack.c up_reprioritizertr.c up_syscall.c up_unblocktask.c \
up_undefinedinsn.c up_usestack.c up_lowputs.c up__vfork.c
ifneq ($(CONFIG_DISABLE_SIGNALS),y)
CMN_CSRCS += up_schedulesigaction.c up_sigdeliver.c

3
include/unistd.h
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@ -1,7 +1,7 @@
/****************************************************************************
* include/unistd.h
*
* Copyright (C) 2007-2009 Gregory Nutt. All rights reserved.
* Copyright (C) 2007-2009, 2013 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* Redistribution and use in source and binary forms, with or without
@ -129,6 +129,7 @@ EXTERN int optopt; /* unrecognized option character */
/* Task Control Interfaces */
EXTERN pid_t vfork(void);
EXTERN pid_t getpid(void);
EXTERN void _exit(int status) noreturn_function;
EXTERN unsigned int sleep(unsigned int seconds);