| /* |
| * Copyright (c) 2014-2015 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. |
| */ |
| |
| /** |
| * @brief Common parts of the linker scripts for the ARCv2/EM targets. |
| */ |
| |
| #define _LINKER |
| #define _ASMLANGUAGE |
| |
| #include <autoconf.h> |
| #include <sections.h> |
| |
| #if defined(CONFIG_NSIM) |
| EXTERN(_VectorTable) |
| #endif |
| |
| #include <linker-defs.h> |
| #include <linker-tool.h> |
| |
| /* physical address of RAM */ |
| #ifdef CONFIG_XIP |
| #define ROMABLE_REGION FLASH |
| #define RAMABLE_REGION SRAM |
| #else |
| #define ROMABLE_REGION SRAM |
| #define RAMABLE_REGION SRAM |
| #endif |
| |
| #if defined(CONFIG_XIP) |
| #define _DATA_IN_ROM __data_rom_start |
| #else |
| #define _DATA_IN_ROM |
| #endif |
| |
| MEMORY { |
| FLASH (rx) : ORIGIN = FLASH_START, LENGTH = FLASH_SIZE*1k |
| SRAM (wx) : ORIGIN = SRAM_START, LENGTH = SRAM_SIZE*1k |
| DCCM (wx) : ORIGIN = DCCM_START, LENGTH = DCCM_SIZE*1k |
| } |
| |
| SECTIONS { |
| GROUP_START(ROMABLE_REGION) |
| |
| SECTION_PROLOGUE(_TEXT_SECTION_NAME,,ALIGN(1024)) { |
| _image_rom_start = .; |
| _image_text_start = .; |
| |
| /* when !XIP, .text is in RAM, and vector table must be at its very start */ |
| |
| KEEP(*(.exc_vector_table)) |
| KEEP(*(".exc_vector_table.*")) |
| |
| |
| KEEP(*(.irq_vector_table)) |
| KEEP(*(".irq_vector_table.*")) |
| |
| #ifndef CONFIG_SW_ISR_TABLE_DYNAMIC |
| KEEP(*(.isr_irq*)) |
| |
| /*The following sections maps the location of the different rows for |
| the _sw_isr_table. Each row maps to an IRQ entry (handler, argument).*/ |
| /*In ARC architecture, IRQ 0-15 are reserved for the system and are not |
| assignable by the user, for that reason the linker sections start |
| on IRQ 16*/ |
| /* sections for IRQ16-19 */ |
| KEEP(*(SORT(.gnu.linkonce.isr_irq[1][6-9]))) |
| /* sections for IRQ20-99 */ |
| KEEP(*(SORT(.gnu.linkonce.isr_irq[2-9][0-9]))) |
| /* sections for IRQ100-999 */ |
| KEEP(*(SORT(.gnu.linkonce.isr_irq[1-9][0-9][0-9]))) |
| #endif |
| |
| *(.text) |
| *(".text.*") |
| *(.gnu.linkonce.t.*) |
| |
| _image_text_end = .; |
| } GROUP_LINK_IN(ROMABLE_REGION) |
| |
| SECTION_PROLOGUE (devconfig, (OPTIONAL),) |
| { |
| __devconfig_start = .; |
| *(".devconfig.*") |
| KEEP(*(SORT_BY_NAME(".devconfig*"))) |
| __devconfig_end = .; |
| } GROUP_LINK_IN(ROMABLE_REGION) |
| |
| SECTION_PROLOGUE(gpio_compat, (OPTIONAL),) |
| { |
| __gpio_compat_start = .; |
| *(".gpio_compat.*") |
| KEEP(*(SORT_BY_NAME(".gpio_compat*"))) |
| __gpio_compat_end = .; |
| } GROUP_LINK_IN(ROMABLE_REGION) |
| |
| #ifdef CONFIG_CPLUSPLUS |
| SECTION_PROLOGUE(_CTOR_SECTION_NAME,,) { |
| /* |
| * The compiler fills the constructor pointers table below, hence |
| * symbol __CTOR_LIST__ must be aligned on 4 byte boundary. |
| * To align with the C++ standard, the first element of the array |
| * contains the number of actual constructors. The last element is |
| * NULL. |
| */ |
| . = ALIGN(4); |
| __CTOR_LIST__ = .; |
| LONG((__CTOR_END__ - __CTOR_LIST__) / 4 - 2) |
| KEEP(*(SORT_BY_NAME(".ctors*"))) |
| LONG(0) |
| __CTOR_END__ = .; |
| } GROUP_LINK_IN(ROMABLE_REGION) |
| |
| SECTION_PROLOGUE(init_array, (OPTIONAL),) |
| { |
| . = ALIGN(4); |
| __init_array_start = .; |
| KEEP(*(SORT_BY_NAME(".init_array*"))) |
| __init_array_end = .; |
| } GROUP_LINK_IN(ROMABLE_REGION) |
| #endif |
| |
| SECTION_PROLOGUE(_RODATA_SECTION_NAME,,) { |
| *(.rodata) |
| *(".rodata.*") |
| *(.gnu.linkonce.r.*) |
| } GROUP_LINK_IN(ROMABLE_REGION) |
| |
| _image_rom_end = .; |
| __data_rom_start = ALIGN(4); /* XIP imaged DATA ROM start addr */ |
| |
| GROUP_END(ROMABLE_REGION) |
| |
| GROUP_START(RAMABLE_REGION) |
| |
| #if defined(CONFIG_XIP) |
| SECTION_AT_PROLOGUE(_DATA_SECTION_NAME,,,_DATA_IN_ROM) { |
| #else |
| SECTION_PROLOGUE(_DATA_SECTION_NAME,,) { |
| #endif |
| |
| /* when XIP, .text is in ROM, but vector table must be at start of .data */ |
| |
| _image_ram_start = .; |
| __data_ram_start = .; |
| *(.data) |
| *(".data.*") |
| |
| #if CONFIG_SW_ISR_TABLE_DYNAMIC |
| KEEP(*(.isr_irq*)) |
| |
| /*The following sections maps the location of the different rows for |
| the _sw_isr_table. Each row maps to an IRQ entry (handler, argument).*/ |
| /*In ARC architecture, IRQ 0-15 are reserved for the system and are not |
| assignable by the user, for that reason the linker sections start |
| on IRQ 16*/ |
| /* sections for IRQ16-19 */ |
| KEEP(*(SORT(.gnu.linkonce.isr_irq[1][6-9]))) |
| /* sections for IRQ20-99 */ |
| KEEP(*(SORT(.gnu.linkonce.isr_irq[2-9][0-9]))) |
| /* sections for IRQ100-999 */ |
| KEEP(*(SORT(.gnu.linkonce.isr_irq[1-9][0-9][0-9]))) |
| #endif |
| } GROUP_LINK_IN(RAMABLE_REGION) |
| |
| SECTION_PROLOGUE(initlevel, (OPTIONAL),) |
| { |
| DEVICE_INIT_SECTIONS() |
| } GROUP_LINK_IN(RAMABLE_REGION) |
| |
| __data_ram_end = .; |
| |
| SECTION_PROLOGUE(_BSS_SECTION_NAME,(NOLOAD),) { |
| /* |
| * For performance, BSS section is assumed to be 4 byte aligned and |
| * a multiple of 4 bytes |
| */ |
| . = ALIGN(4); |
| __bss_start = .; |
| *(.bss) |
| *(".bss.*") |
| COMMON_SYMBOLS |
| /* |
| * BSP clears this memory in words only and doesn't clear any |
| * potential left over bytes. |
| */ |
| __bss_end = ALIGN(4); |
| } GROUP_LINK_IN(RAMABLE_REGION) |
| |
| SECTION_PROLOGUE(_NOINIT_SECTION_NAME,(NOLOAD),) { |
| /* |
| * This section is used for non-initialized objects that |
| * will not be cleared during the boot process. |
| */ |
| *(.noinit) |
| *(".noinit.*") |
| |
| } GROUP_LINK_IN(RAMABLE_REGION) |
| |
| /* Define linker symbols */ |
| _image_ram_end = .; |
| _end = .; /* end of image */ |
| __bss_num_words = (__bss_end - __bss_start) >> 2; |
| |
| GROUP_END(RAMABLE_REGION) |
| |
| /* Data Closely Coupled Memory (DCCM) */ |
| GROUP_START(DCCM) |
| GROUP_END(DCCM) |
| |
| SECTION_PROLOGUE(initlevel_error, (OPTIONAL),) |
| { |
| DEVICE_INIT_UNDEFINED_SECTION() |
| } |
| ASSERT(SIZEOF(initlevel_error) == 0, "Undefined initialization levels used.") |
| |
| } |
| |
| #ifdef CONFIG_XIP |
| /* |
| * Round up number of words for DATA section to ensure that XIP copies the |
| * entire data section. XIP copy is done in words only, so there may be up |
| * to 3 extra bytes copied in next section (BSS). At run time, the XIP copy |
| * is done first followed by clearing the BSS section. |
| */ |
| __data_size = (__data_ram_end - __data_ram_start); |
| __data_num_words = (__data_size + 3) >> 2; |
| |
| #endif |