/**************************************************************************** * boards/arm/stm32l4/stm32l476vg-disco/kernel/stm32l4_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 #include #include #include #include #include #if defined(CONFIG_BUILD_PROTECTED) && !defined(__KERNEL__) /**************************************************************************** * Pre-processor Definitions ****************************************************************************/ /* Configuration ************************************************************/ #ifndef CONFIG_NUTTX_USERSPACE # error "CONFIG_NUTTX_USERSPACE not defined" #endif #if CONFIG_NUTTX_USERSPACE != 0x08020000 # error "CONFIG_NUTTX_USERSPACE must be 0x08020000 to match memory.ld" #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 (.text + .rodata) */ 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 */ /* 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, /* Memory manager heap structure */ .us_heap = &g_mmheap, /* Task/thread startup routines */ .task_startup = nxtask_startup, /* Signal handler trampoline */ .signal_handler = up_signal_handler, /* User-space 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__ */