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x86: add linker directives for 64-bit user mode

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Includes linker script fragments for the kernel object
tables and automatic memory partitions. The data section
is moved to the end per the requirements of
include/linker/kobject.h.

Signed-off-by: Andrew Boie <andrew.p.boie@intel.com>
This commit is contained in:
Andrew Boie 2019-11-19 17:51:04 -08:00 • committed by Anas Nashif
commit f5468d1192
1 changed files with 37 additions and 15 deletions
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52
include/arch/x86/intel64/linker.ld
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@ -57,6 +57,9 @@ SECTIONS
_image_text_start = .; _image_text_start = .;
*(.text) *(.text)
*(.text.*) *(.text.*)
#include <linker/kobject-text.ld>
MMU_PAGE_ALIGN MMU_PAGE_ALIGN
} GROUP_LINK_IN(ROMABLE_REGION) } GROUP_LINK_IN(ROMABLE_REGION)
@ -84,6 +87,7 @@ SECTIONS
_mmu_region_list_end = .; _mmu_region_list_end = .;
#endif /* CONFIG_X86_MMU */ #endif /* CONFIG_X86_MMU */
#include <linker/kobject-rom.ld>
} GROUP_LINK_IN(ROMABLE_REGION) } GROUP_LINK_IN(ROMABLE_REGION)
#include <linker/cplusplus-rom.ld> #include <linker/cplusplus-rom.ld>
@ -93,25 +97,27 @@ SECTIONS
_image_rodata_size = _image_rodata_end - _image_rodata_start; _image_rodata_size = _image_rodata_end - _image_rodata_start;
_image_rom_end = .; _image_rom_end = .;
SECTION_PROLOGUE(_DATA_SECTION_NAME,,ALIGN(16)) #ifdef CONFIG_USERSPACE
{ /* APP SHARED MEMORY REGION */
MMU_PAGE_ALIGN #define SMEM_PARTITION_ALIGN(size) MMU_PAGE_ALIGN
_image_ram_start = .; #define APP_SHARED_ALIGN MMU_PAGE_ALIGN
__kernel_ram_start = .;
*(.data)
*(.data.*)
#include <snippets-rwdata.ld>
#ifdef CONFIG_CUSTOM_RWDATA_LD
#include <custom-rwdata.ld>
#endif /* CONFIG_CUSTOM_RWDATA_LD */
} GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
#include <snippets-ram-sections.ld> #include <app_smem.ld>
#include <linker/common-ram.ld>
#include <linker/cplusplus-ram.ld> _image_ram_start = _app_smem_start;
_app_smem_size = _app_smem_end - _app_smem_start;
_app_smem_num_words = _app_smem_size >> 2;
_app_smem_rom_start = LOADADDR(_APP_SMEM_SECTION_NAME);
_app_smem_num_words = _app_smem_size >> 2;
#endif /* CONFIG_USERSPACE */
SECTION_PROLOGUE(_BSS_SECTION_NAME, (NOLOAD), ALIGN(16)) SECTION_PROLOGUE(_BSS_SECTION_NAME, (NOLOAD), ALIGN(16))
{ {
MMU_PAGE_ALIGN
#ifndef CONFIG_USERSPACE
_image_ram_start = .;
#endif
__kernel_ram_start = .;
__bss_start = .; __bss_start = .;
*(.bss) *(.bss)
*(.bss.*) *(.bss.*)
@ -134,7 +140,23 @@ SECTIONS
#include <custom-sections.ld> #include <custom-sections.ld>
#endif /* CONFIG_CUSTOM_SECTIONS_LD */ #endif /* CONFIG_CUSTOM_SECTIONS_LD */
SECTION_PROLOGUE(_DATA_SECTION_NAME,,ALIGN(16))
{
*(.data)
*(.data.*)
#include <snippets-rwdata.ld>
#ifdef CONFIG_CUSTOM_RWDATA_LD
#include <custom-rwdata.ld>
#endif /* CONFIG_CUSTOM_RWDATA_LD */
} GROUP_DATA_LINK_IN(RAMABLE_REGION, ROMABLE_REGION)
#include <snippets-ram-sections.ld>
#include <linker/common-ram.ld>
#include <linker/cplusplus-ram.ld>
#include <linker/kobject.ld>
. = ALIGN(8); . = ALIGN(8);
MMU_PAGE_ALIGN
_image_ram_end = .; _image_ram_end = .;
_end = .; _end = .;