a1344d8a44
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5778 42af7a65-404d-4744-a932-0658087f49c3
143 lines
5.3 KiB
C
143 lines
5.3 KiB
C
/****************************************************************************
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* configs/stm32f4discovery/kernel/up_userspace.c
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*
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* Copyright (C) 2013 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name NuttX nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <stdlib.h>
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#include <nuttx/userspace.h>
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#include <nuttx/wqueue.h>
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#include <nuttx/mm.h>
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#if defined(CONFIG_NUTTX_KERNEL) && !defined(__KERNEL__)
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/****************************************************************************
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* Pre-processor Definitions
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****************************************************************************/
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/* Configuration ************************************************************/
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#ifndef CONFIG_NUTTX_USERSPACE
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# error "CONFIG_NUTTX_USERSPACE not defined"
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#endif
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#if CONFIG_NUTTX_USERSPACE != 0x08020000
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# error "CONFIG_NUTTX_USERSPACE must be 0x08020000 to match memory.ld"
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#endif
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/****************************************************************************
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* Public Data
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****************************************************************************/
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/* These 'addresses' of these values are setup by the linker script. They are
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* not actual uint32_t storage locations! They are only used meaningfully in the
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* following way:
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*
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* - The linker script defines, for example, the symbol_sdata.
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* - The declareion extern uint32_t _sdata; makes C happy. C will believe
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* that the value _sdata is the address of a uint32_t variable _data (it is
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* not!).
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* - We can recoved the linker value then by simply taking the address of
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* of _data. like: uint32_t *pdata = &_sdata;
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*/
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extern uint32_t _stext; /* Start of .text */
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extern uint32_t _etext; /* End_1 of .text + .rodata */
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extern const uint32_t _eronly; /* End+1 of read only section (.text + .rodata) */
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extern uint32_t _sdata; /* Start of .data */
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extern uint32_t _edata; /* End+1 of .data */
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extern uint32_t _sbss; /* Start of .bss */
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extern uint32_t _ebss; /* End+1 of .bss */
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/* This is the user space entry point */
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int CONFIG_USER_ENTRYPOINT(int argc, char *argv[]);
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const struct userspace_s userspace __attribute__ ((section (".userspace"))) =
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{
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/* General memory map */
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.us_entrypoint = (main_t)CONFIG_USER_ENTRYPOINT,
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.us_textstart = (uintptr_t)&_stext,
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.us_textend = (uintptr_t)&_etext,
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.us_datasource = (uintptr_t)&_eronly,
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.us_datastart = (uintptr_t)&_sdata,
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.us_dataend = (uintptr_t)&_edata,
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.us_bssstart = (uintptr_t)&_sbss,
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.us_bssend = (uintptr_t)&_ebss,
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/* Task/thread startup routines */
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.task_startup = task_startup,
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#ifndef CONFIG_DISABLE_PTHREAD
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.pthread_startup = pthread_startup,
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#endif
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/* Signal handler trampoline */
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#ifndef CONFIG_DISABLE_SIGNALS
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.signal_handler = up_signal_handler,
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#endif
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/* Memory manager entry points (declared in include/nuttx/mm.h) */
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.mm_initialize = umm_initialize,
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.mm_addregion = umm_addregion,
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.mm_trysemaphore = umm_trysemaphore,
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.mm_givesemaphore = umm_givesemaphore,
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/* Memory manager entry points (declared in include/stdlib.h) */
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.mm_malloc = malloc,
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.mm_realloc = realloc,
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.mm_zalloc = zalloc,
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.mm_free = free,
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/* User-space work queue support (declared in include/nuttx/wqueue.h) */
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#if defined(CONFIG_SCHED_WORKQUEUE) && defined(CONFIG_SCHED_USRWORK)
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.work_usrstart = work_usrstart;
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#endif
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};
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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#endif /* CONFIG_NUTTX_KERNEL && !__KERNEL__ */
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