115 lines
4.1 KiB
C
115 lines
4.1 KiB
C
|
/****************************************************************************
|
||
|
|
* boards/risc-v/esp32c3/esp32c3-devkit/kernel/esp32c3_userspace.c
|
||
|
|
*
|
||
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
||
|
|
* contributor license agreements. See the NOTICE file distributed with
|
||
|
|
* this work for additional information regarding copyright ownership. The
|
||
|
|
* ASF licenses this file to you 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.
|
||
|
|
*
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Included Files
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
#include <nuttx/config.h>
|
||
|
|
|
||
|
|
#include <stdlib.h>
|
||
|
|
|
||
|
|
#include <nuttx/arch.h>
|
||
|
|
#include <nuttx/mm/mm.h>
|
||
|
|
#include <nuttx/wqueue.h>
|
||
|
|
#include <nuttx/userspace.h>
|
||
|
|
|
||
|
|
#if defined(CONFIG_BUILD_PROTECTED) && !defined(__KERNEL__)
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Pre-processor Definitions
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/* Configuration ************************************************************/
|
||
|
|
|
||
|
|
#ifndef CONFIG_NUTTX_USERSPACE
|
||
|
|
# error "CONFIG_NUTTX_USERSPACE not defined"
|
||
|
|
#endif
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Public Data
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
/* These 'addresses' of these values are setup by the linker script.
|
||
|
|
* They are not actual uint32_t storage locations!
|
||
|
|
* They are only used meaningfully in the following way:
|
||
|
|
*
|
||
|
|
* - The linker script defines, for example, the symbol_sdata.
|
||
|
|
* - The declaration extern uint32_t _sdata; makes C happy. C will believe
|
||
|
|
* that the value _sdata is the address of a uint32_t variable _data
|
||
|
|
* (it is not!).
|
||
|
|
* - We can recover the linker value then by simply taking the address of
|
||
|
|
* of _data. like: uint32_t *pdata = &_sdata;
|
||
|
|
*/
|
||
|
|
|
||
|
|
extern uint32_t _stext; /* Start of .text */
|
||
|
|
extern uint32_t _etext; /* End+1 of .text + .rodata */
|
||
|
|
extern const uint32_t _eronly; /* End+1 of read only section */
|
||
|
|
extern uint32_t _sdata; /* Start of .data */
|
||
|
|
extern uint32_t _edata; /* End+1 of .data */
|
||
|
|
extern uint32_t _sbss; /* Start of .bss */
|
||
|
|
extern uint32_t _ebss; /* End+1 of .bss */
|
||
|
|
|
||
|
|
extern uintptr_t *__ld_udram_end; /* End+1 of user ram section */
|
||
|
|
|
||
|
|
/* This is the user space entry point */
|
||
|
|
|
||
|
|
int CONFIG_INIT_ENTRYPOINT(int argc, char *argv[]);
|
||
|
|
|
||
|
|
const struct userspace_s userspace locate_data(".userspace") =
|
||
|
|
{
|
||
|
|
/* General memory map */
|
||
|
|
|
||
|
|
.us_entrypoint = (main_t)CONFIG_INIT_ENTRYPOINT,
|
||
|
|
.us_textstart = (uintptr_t)&_stext,
|
||
|
|
.us_textend = (uintptr_t)&_etext,
|
||
|
|
.us_datasource = (uintptr_t)&_eronly,
|
||
|
|
.us_datastart = (uintptr_t)&_sdata,
|
||
|
|
.us_dataend = (uintptr_t)&_edata,
|
||
|
|
.us_bssstart = (uintptr_t)&_sbss,
|
||
|
|
.us_bssend = (uintptr_t)&_ebss,
|
||
|
|
|
||
|
|
.us_heapend = (uintptr_t)&__ld_udram_end,
|
||
|
|
|
||
|
|
/* Memory manager heap structure */
|
||
|
|
|
||
|
|
.us_heap = &g_mmheap,
|
||
|
|
|
||
|
|
/* Task/thread startup routines */
|
||
|
|
|
||
|
|
.task_startup = nxtask_startup,
|
||
|
|
|
||
|
|
/* Signal handler trampoline */
|
||
|
|
|
||
|
|
.signal_handler = up_signal_handler,
|
||
|
|
|
||
|
|
/* Userspace work queue support (declared in include/nuttx/wqueue.h) */
|
||
|
|
|
||
|
|
#ifdef CONFIG_LIBC_USRWORK
|
||
|
|
.work_usrstart = work_usrstart,
|
||
|
|
#endif
|
||
|
|
};
|
||
|
|
|
||
|
|
/****************************************************************************
|
||
|
|
* Public Functions
|
||
|
|
****************************************************************************/
|
||
|
|
|
||
|
|
#endif /* CONFIG_BUILD_PROTECTED && !__KERNEL__ */
|