f6ca7de09c
There was a lot of duplication between architectures for the definition of threads and the "nanokernel" guts. These have been consolidated. Now, a common file kernel/unified/include/kernel_structs.h holds the common definitions. Architectures provide two files to complement it: kernel_arch_data.h and kernel_arch_func.h. The first one contains at least the struct _thread_arch and struct _kernel_arch data structures, as well as the struct _callee_saved and struct _caller_saved register layouts. The second file contains anything that needs what is provided by the common stuff in kernel_structs.h. Those two files are only meant to be included in kernel_structs.h in very specific locations. The thread data structure has been separated into three major parts: common struct _thread_base and struct k_thread, and arch-specific struct _thread_arch. The first and third ones are included in the second. The struct s_NANO data structure has been split into two: common struct _kernel and arch-specific struct _kernel_arch. The latter is included in the former. Offsets files have also changed: nano_offsets.h has been renamed kernel_offsets.h and is still included by the arch-specific offsets.c. Also, since the thread and kernel data structures are now made of sub-structures, offsets have to be added to make up the full offset. Some of these additions have been consolidated in shorter symbols, available from kernel/unified/include/offsets_short.h, which includes an arch-specific offsets_arch_short.h. Most of the code include offsets_short.h now instead of offsets.h. Change-Id: I084645cb7e6db8db69aeaaf162963fe157045d5a Signed-off-by: Benjamin Walsh <benjamin.walsh@windriver.com>
170 lines
4.5 KiB
C
170 lines
4.5 KiB
C
/*
|
|
* Copyright (c) 2013-2014, Wind River Systems, Inc.
|
|
*
|
|
* Licensed 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.
|
|
*/
|
|
|
|
/*
|
|
* DESCRIPTION
|
|
* Platform independent, commonly used macros and defines related to linker
|
|
* script.
|
|
*
|
|
* This file may be included by:
|
|
* - Linker script files: for linker section declarations
|
|
* - C files: for external declaration of address or size of linker section
|
|
* - Assembly files: for external declaration of address or size of linker
|
|
* section
|
|
*/
|
|
|
|
#ifndef _LINKERDEFS_H
|
|
#define _LINKERDEFS_H
|
|
|
|
#include <toolchain.h>
|
|
#include <sections.h>
|
|
|
|
/* include platform dependent linker-defs */
|
|
#ifdef CONFIG_X86
|
|
/* Nothing yet to include */
|
|
#elif defined(CONFIG_ARM)
|
|
/* Nothing yet to include */
|
|
#elif defined(CONFIG_ARC)
|
|
/* Nothing yet to include */
|
|
#elif defined(CONFIG_NIOS2)
|
|
/* Nothing yet to include */
|
|
#else
|
|
#error Arch not supported.
|
|
#endif
|
|
|
|
#ifdef _LINKER
|
|
|
|
|
|
/*
|
|
* Space for storing per device busy bitmap. Since we do not know beforehand
|
|
* the number of devices, we go through the below mechanism to allocate the
|
|
* required space.
|
|
*/
|
|
#ifdef CONFIG_DEVICE_POWER_MANAGEMENT
|
|
#define DEVICE_COUNT \
|
|
((__device_init_end - __device_init_start) / _DEVICE_STRUCT_SIZE)
|
|
#define DEV_BUSY_SZ (((DEVICE_COUNT + 31) / 32) * 4)
|
|
#define DEVICE_BUSY_BITFIELD() \
|
|
FILL(0x00) ; \
|
|
__device_busy_start = .; \
|
|
. = . + DEV_BUSY_SZ; \
|
|
__device_busy_end = .;
|
|
#else
|
|
#define DEVICE_BUSY_BITFIELD()
|
|
#endif
|
|
|
|
/*
|
|
* generate a symbol to mark the start of the device initialization objects for
|
|
* the specified level, then link all of those objects (sorted by priority);
|
|
* ensure the objects aren't discarded if there is no direct reference to them
|
|
*/
|
|
|
|
#define DEVICE_INIT_LEVEL(level) \
|
|
__device_##level##_start = .; \
|
|
KEEP(*(SORT(.init_##level[0-9]))); \
|
|
KEEP(*(SORT(.init_##level[1-9][0-9]))); \
|
|
|
|
/*
|
|
* link in device initialization objects for all devices that are automatically
|
|
* initialized by the kernel; the objects are sorted in the order they will be
|
|
* initialized (i.e. ordered by level, sorted by priority within a level)
|
|
*/
|
|
|
|
#define DEVICE_INIT_SECTIONS() \
|
|
__device_init_start = .; \
|
|
DEVICE_INIT_LEVEL(PRE_KERNEL_1) \
|
|
DEVICE_INIT_LEVEL(PRE_KERNEL_2) \
|
|
DEVICE_INIT_LEVEL(POST_KERNEL) \
|
|
DEVICE_INIT_LEVEL(APPLICATION) \
|
|
DEVICE_INIT_LEVEL(PRIMARY) \
|
|
DEVICE_INIT_LEVEL(SECONDARY) \
|
|
DEVICE_INIT_LEVEL(NANOKERNEL) \
|
|
DEVICE_INIT_LEVEL(MICROKERNEL) \
|
|
__device_init_end = .; \
|
|
DEVICE_BUSY_BITFIELD() \
|
|
|
|
|
|
/* define a section for undefined device initialization levels */
|
|
#define DEVICE_INIT_UNDEFINED_SECTION() \
|
|
KEEP(*(SORT(.init_[_A-Z0-9]*))) \
|
|
|
|
/*
|
|
* link in shell initialization objects for all modules that use shell and
|
|
* their shell commands are automatically initialized by the kernel.
|
|
*/
|
|
|
|
#define SHELL_INIT_SECTIONS() \
|
|
__shell_cmd_start = .; \
|
|
KEEP(*(".shell_*")); \
|
|
__shell_cmd_end = .;
|
|
|
|
|
|
#ifdef CONFIG_X86 /* LINKER FILES: defines used by linker script */
|
|
/* Should be moved to linker-common-defs.h */
|
|
#if defined(CONFIG_XIP)
|
|
#define ROMABLE_REGION ROM
|
|
#else
|
|
#define ROMABLE_REGION RAM
|
|
#endif
|
|
#endif
|
|
|
|
/*
|
|
* If image is loaded via kexec Linux system call, then program
|
|
* headers need to be page aligned.
|
|
* This can be done by section page aligning.
|
|
*/
|
|
#ifdef CONFIG_BOOTLOADER_KEXEC
|
|
#define KEXEC_PGALIGN_PAD(x) . = ALIGN(x);
|
|
#else
|
|
#define KEXEC_PGALIGN_PAD(x)
|
|
#endif
|
|
|
|
#elif defined(_ASMLANGUAGE)
|
|
|
|
/* Assembly FILES: declaration defined by the linker script */
|
|
GDATA(__bss_start)
|
|
GDATA(__bss_num_words)
|
|
#ifdef CONFIG_XIP
|
|
GDATA(__data_rom_start)
|
|
GDATA(__data_ram_start)
|
|
GDATA(__data_num_words)
|
|
#endif
|
|
|
|
#else /* ! _ASMLANGUAGE */
|
|
|
|
#include <stdint.h>
|
|
extern char __bss_start[];
|
|
extern char __bss_end[];
|
|
#ifdef CONFIG_XIP
|
|
extern char __data_rom_start[];
|
|
extern char __data_ram_start[];
|
|
extern char __data_ram_end[];
|
|
#endif
|
|
|
|
extern char _image_rom_start[];
|
|
extern char _image_rom_end[];
|
|
extern char _image_ram_start[];
|
|
extern char _image_ram_end[];
|
|
extern char _image_text_start[];
|
|
extern char _image_text_end[];
|
|
|
|
/* end address of image. */
|
|
extern char _end[];
|
|
|
|
#endif /* ! _ASMLANGUAGE */
|
|
|
|
#endif /* _LINKERDEFS_H */
|