| /* ----------------------------------------------------------------------- |
| * |
| * Copyright 2008-2009 H. Peter Anvin - All Rights Reserved |
| * Copyright 2009 Intel Corporation; author: H. Peter Anvin |
| * |
| * This program is free software; you can redistribute it and/or modify |
| * it under the terms of the GNU General Public License as published by |
| * the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, |
| * Boston MA 02110-1301, USA; either version 2 of the License, or |
| * (at your option) any later version; incorporated herein by reference. |
| * |
| * ----------------------------------------------------------------------- */ |
| |
| /* |
| * Linker script for the SYSLINUX core |
| */ |
| |
| OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386") |
| OUTPUT_ARCH(i386) |
| EXTERN(_start) |
| ENTRY(_start) |
| |
| STACK32_LEN = 65536; |
| |
| SECTIONS |
| { |
| /* Prefix structure for the compression program */ |
| . = 0; |
| HIDDEN(__module_start = .); |
| .prefix : { |
| *(.prefix) |
| } |
| |
| /* "Early" sections (before the load) */ |
| . = 0x1000; |
| |
| .earlybss (NOLOAD) : { |
| HIDDEN(__earlybss_start = .); |
| *(.earlybss) |
| HIDDEN(__earlybss_end = .); |
| } |
| HIDDEN(__earlybss_len = ABSOLUTE(__earlybss_end) - ABSOLUTE(__earlybss_start)); |
| HIDDEN(__earlybss_dwords = (__earlybss_len + 3) >> 2); |
| |
| . = ALIGN(4); |
| .bss16 (NOLOAD) : { |
| HIDDEN(__bss16_start = .); |
| *(.bss16) |
| HIDDEN(__bss16_end = .); |
| } |
| HIDDEN(__bss16_len = ABSOLUTE(__bss16_end) - ABSOLUTE(__bss16_start)); |
| HIDDEN(__bss16_dwords = (__bss16_len + 3) >> 2); |
| |
| . = ALIGN(4); |
| .config : AT (__config_lma) { |
| HIDDEN(__config_start = .); |
| *(.config) |
| HIDDEN(__config_end = .); |
| } |
| HIDDEN(__config_len = ABSOLUTE(__config_end) - ABSOLUTE(__config_start)); |
| HIDDEN(__config_dwords = (__config_len + 3) >> 2); |
| |
| /* Generated and/or copied code */ |
| |
| . = ALIGN(128); /* Minimum separation from mutable data */ |
| .replacestub : AT (__replacestub_lma) { |
| HIDDEN(__replacestub_start = .); |
| *(.replacestub) |
| HIDDEN(__replacestub_end = .); |
| } |
| HIDDEN(__replacestub_len = ABSOLUTE(__replacestub_end) - ABSOLUTE(__replacestub_start)); |
| HIDDEN(__replacestub_dwords = (__replacestub_len + 3) >> 2); |
| |
| . = ALIGN(16); |
| HIDDEN(__gentextnr_lma = .); |
| .gentextnr : AT(__gentextnr_lma) { |
| HIDDEN(__gentextnr_start = .); |
| *(.gentextnr) |
| HIDDEN(__gentextnr_end = .); |
| } |
| HIDDEN(__gentextnr_len = ABSOLUTE(__gentextnr_end) - ABSOLUTE(__gentextnr_start)); |
| HIDDEN(__gentextnr_dwords = (__gentextnr_len + 3) >> 2); |
| |
| . = STACK_BASE; |
| .stack16 : AT(STACK_BASE) { |
| HIDDEN(__stack16_start = .); |
| . += STACK_LEN; |
| HIDDEN(__stack16_end = .); |
| } |
| HIDDEN(__stack16_len = ABSOLUTE(__stack16_end) - ABSOLUTE(__stack16_start)); |
| HIDDEN(__stack16_dwords = (__stack16_len + 3) >> 2); |
| |
| /* Initialized sections */ |
| |
| . = 0x7c00; |
| .init : { |
| FILL(0x90909090) |
| HIDDEN(__init_start = .); |
| *(.init) |
| HIDDEN(__init_end = .); |
| } |
| HIDDEN(__init_len = ABSOLUTE(__init_end) - ABSOLUTE(__init_start)); |
| HIDDEN(__init_dwords = (__init_len + 3) >> 2); |
| |
| .text16 : { |
| FILL(0x90909090) |
| HIDDEN(__text16_start = .); |
| *(.text16) |
| HIDDEN(__text16_end = .); |
| } |
| HIDDEN(__text16_len = ABSOLUTE(__text16_end) - ABSOLUTE(__text16_start)); |
| HIDDEN(__text16_dwords = (__text16_len + 3) >> 2); |
| |
| /* |
| * .textnr is used for 32-bit code that is used on the code |
| * path to initialize the .text segment |
| */ |
| . = ALIGN(16); |
| .textnr : { |
| FILL(0x90909090) |
| HIDDEN(__textnr_start = .); |
| *(.textnr) |
| HIDDEN(__textnr_end = .); |
| } |
| HIDDEN(__textnr_len = ABSOLUTE(__textnr_end) - ABSOLUTE(__textnr_start)); |
| HIDDEN(__textnr_dwords = (__textnr_len + 3) >> 2); |
| |
| . = ALIGN(16); |
| HIDDEN(__bcopyxx_start = .); |
| |
| .bcopyxx.text : { |
| FILL(0x90909090) |
| HIDDEN(__bcopyxx_text_start = .); |
| *(.bcopyxx.text) |
| HIDDEN(__bcopyxx_text_end = .); |
| } |
| HIDDEN(__bcopyxx_text_len = ABSOLUTE(__bcopyxx_text_end) - ABSOLUTE(__bcopyxx_text_start)); |
| HIDDEN(__bcopyxx_text_dwords = (__bcopyxx_text_len + 3) >> 2); |
| |
| .bcopyxx.data : { |
| HIDDEN(__bcopyxx_data_start = .); |
| *(.bcopyxx.text) |
| HIDDEN(__bcopyxx_data_end = .); |
| } |
| HIDDEN(__bcopyxx_data_len = ABSOLUTE(__bcopyxx_data_end) - ABSOLUTE(__bcopyxx_data_start)); |
| HIDDEN(__bcopyxx_data_dwords = (__bcopyxx_data_len + 3) >> 2); |
| |
| HIDDEN(__bcopyxx_end = .); |
| HIDDEN(__bcopyxx_len = ABSOLUTE(__bcopyxx_end) - ABSOLUTE(__bcopyxx_start)); |
| HIDDEN(__bcopyxx_dwords = (__bcopyxx_len + 3) >> 2); |
| |
| . = ALIGN(4); |
| .data16 : { |
| HIDDEN(__data16_start = .); |
| *(.data16) |
| HIDDEN(__data16_end = .); |
| } |
| HIDDEN(__data16_len = ABSOLUTE(__data16_end) - ABSOLUTE(__data16_start)); |
| HIDDEN(__data16_dwords = (__data16_len + 3) >> 2); |
| |
| . = ALIGN(4); |
| HIDDEN(__config_lma = .); |
| . += SIZEOF(.config); |
| |
| . = ALIGN(4); |
| HIDDEN(__replacestub_lma = .); |
| . += SIZEOF(.replacestub); |
| |
| /* The 32-bit code loads above the non-progbits sections */ |
| |
| . = ALIGN(16); |
| HIDDEN(__pm_code_lma = .); |
| |
| HIDDEN(__high_clear_start = .); |
| |
| . = ALIGN(512); |
| .adv (NOLOAD) : { |
| HIDDEN(__adv_start = .); |
| *(.adv) |
| HIDDEN(__adv_end = .); |
| } |
| HIDDEN(__adv_len = ABSOLUTE(__adv_end) - ABSOLUTE(__adv_start)); |
| HIDDEN(__adv_dwords = (__adv_len + 3) >> 2); |
| |
| /* Late uninitialized sections */ |
| |
| . = ALIGN(4); |
| .uibss (NOLOAD) : { |
| HIDDEN(__uibss_start = .); |
| *(.uibss) |
| HIDDEN(__uibss_end = .); |
| } |
| HIDDEN(__uibss_len = ABSOLUTE(__uibss_end) - ABSOLUTE(__uibss_start)); |
| HIDDEN(__uibss_dwords = (__uibss_len + 3) >> 2); |
| |
| HIDDEN(_end16 = .); |
| HIDDEN(__assert_end16 = ASSERT(_end16 <= 0x10000, "64K overflow")); |
| |
| /* |
| * Special 16-bit segments |
| */ |
| |
| . = ALIGN(65536); |
| .real_mode (NOLOAD) : { |
| *(.real_mode) |
| } |
| HIDDEN(real_mode_seg = core_real_mode >> 4); |
| |
| . = ALIGN(65536); |
| .xfer_buf (NOLOAD) : { |
| *(.xfer_buf) |
| } |
| HIDDEN(xfer_buf_seg = core_xfer_buf >> 4); |
| |
| /* |
| * Used to allocate lowmem buffers from 32-bit code |
| */ |
| .lowmem (NOLOAD) : { |
| HIDDEN(__lowmem_start = .); |
| *(.lowmem) |
| HIDDEN(__lowmem_end = .); |
| } |
| HIDDEN(__lowmem_len = ABSOLUTE(__lowmem_end) - ABSOLUTE(__lowmem_start)); |
| HIDDEN(__lowmem_dwords = (__lowmem_len + 3) >> 2); |
| |
| HIDDEN(__high_clear_end = .); |
| |
| HIDDEN(__high_clear_len = ABSOLUTE(__high_clear_end) - ABSOLUTE(__high_clear_start)); |
| HIDDEN(__high_clear_dwords = (__high_clear_len + 3) >> 2); |
| |
| /* Start of the lowmem heap */ |
| . = ALIGN(16); |
| HIDDEN(__lowmem_heap = .); |
| |
| /* |
| * 32-bit code. This is a hack for the moment due to the |
| * real-mode segments also allocated. |
| */ |
| |
| . = 0x100000; |
| |
| HIDDEN(__pm_code_start = .); |
| |
| HIDDEN(__text_vma = .); |
| HIDDEN(__text_lma = __pm_code_lma); |
| .text : AT(__text_lma) { |
| FILL(0x90909090) |
| HIDDEN(__text_start = .); |
| *(.text) |
| *(.text.*) |
| HIDDEN(__text_end = .); |
| } |
| |
| . = ALIGN(16); |
| |
| HIDDEN(__rodata_vma = .); |
| HIDDEN(__rodata_lma = __rodata_vma + __text_lma - __text_vma); |
| .rodata : AT(__rodata_lma) { |
| HIDDEN(__rodata_start = .); |
| *(.rodata) |
| *(.rodata.*) |
| HIDDEN(__rodata_end = .); |
| } |
| |
| . = ALIGN(4); |
| |
| HIDDEN(__ctors_vma = .); |
| HIDDEN(__ctors_lma = __ctors_vma + __text_lma - __text_vma); |
| .ctors : AT(__ctors_lma) { |
| HIDDEN(__ctors_start = .); |
| KEEP (*(SORT(.preinit_array*))) |
| KEEP (*(SORT(.init_array*))) |
| KEEP (*(SORT(.ctors*))) |
| HIDDEN(__ctors_end = .); |
| } |
| |
| HIDDEN(__dtors_vma = .); |
| HIDDEN(__dtors_lma = __dtors_vma + __text_lma - __text_vma); |
| .dtors : AT(__dtors_lma) { |
| HIDDEN(__dtors_start = .); |
| KEEP (*(SORT(.fini_array*))) |
| KEEP (*(SORT(.dtors*))) |
| HIDDEN(__dtors_end = .); |
| } |
| |
| . = ALIGN(4); |
| |
| HIDDEN(__dynsym_vma = .); |
| HIDDEN(__dynsym_lma = __dynsym_vma + __text_lma - __text_vma); |
| .dynsym : AT(__dynsym_lma) { |
| HIDDEN(__dynsym_start = .); |
| *(.dynsym) |
| HIDDEN(__dynsym_end = .); |
| } |
| HIDDEN(__dynsym_len = __dynsym_end - __dynsym_start); |
| |
| . = ALIGN(4); |
| |
| HIDDEN(__dynstr_vma = .); |
| HIDDEN(__dynstr_lma = __dynstr_vma + __text_lma - __text_vma); |
| .dynstr : AT(__dynstr_lma) { |
| HIDDEN(__dynstr_start = .); |
| *(.dynstr) |
| HIDDEN(__dynstr_end = .); |
| } |
| HIDDEN(__dynstr_len = __dynstr_end - __dynstr_start); |
| |
| . = ALIGN(4); |
| |
| HIDDEN(__gnu_hash_vma = .); |
| HIDDEN(__gnu_hash_lma = __gnu_hash_vma + __text_lma - __text_vma); |
| .gnu.hash : AT(__gnu_hash_lma) { |
| HIDDEN(__gnu_hash_start = .); |
| *(.gnu.hash) |
| HIDDEN(__gnu_hash_end = .); |
| } |
| |
| |
| . = ALIGN(4); |
| |
| HIDDEN(__dynlink_vma = .); |
| HIDDEN(__dynlink_lma = __dynlink_vma + __text_lma - __text_vma); |
| .dynlink : AT(__dynlink_lma) { |
| HIDDEN(__dynlink_start = .); |
| *(.dynlink) |
| HIDDEN(__dynlink_end = .); |
| } |
| |
| . = ALIGN(4); |
| |
| HIDDEN(__got_vma = .); |
| HIDDEN(__got_lma = __got_vma + __text_lma - __text_vma); |
| .got : AT(__got_lma) { |
| HIDDEN(__got_start = .); |
| KEEP (*(.got.plt)) |
| KEEP (*(.got)) |
| HIDDEN(__got_end = .); |
| } |
| |
| . = ALIGN(4); |
| |
| HIDDEN(__dynamic_vma = .); |
| HIDDEN(__dynamic_lma = __dynamic_vma + __text_lma - __text_vma); |
| .dynamic : AT(__dynamic_lma) { |
| HIDDEN(__dynamic_start = .); |
| *(.dynamic) |
| HIDDEN(__dynamic_end = .); |
| } |
| |
| . = ALIGN(16); |
| |
| HIDDEN(__data_vma = .); |
| HIDDEN(__data_lma = __data_vma + __text_lma - __text_vma); |
| .data : AT(__data_lma) { |
| HIDDEN(__data_start = .); |
| *(.data) |
| *(.data.*) |
| HIDDEN(__data_end = .); |
| } |
| |
| HIDDEN(__pm_code_end = .); |
| HIDDEN(__pm_code_len = ABSOLUTE(__pm_code_end) - ABSOLUTE(__pm_code_start)); |
| HIDDEN(__pm_code_dwords = (__pm_code_len + 3) >> 2); |
| |
| . = ALIGN(128); |
| |
| HIDDEN(__bss_vma = .); |
| HIDDEN(__bss_lma = .); /* Dummy */ |
| .bss (NOLOAD) : AT (__bss_lma) { |
| HIDDEN(__bss_start = .); |
| *(.bss) |
| *(.bss.*) |
| *(COMMON) |
| HIDDEN(__bss_end = .); |
| } |
| HIDDEN(__bss_len = ABSOLUTE(__bss_end) - ABSOLUTE(__bss_start)); |
| HIDDEN(__bss_dwords = (__bss_len + 3) >> 2); |
| |
| /* Data saved away before bss initialization */ |
| . = ALIGN(128); |
| |
| HIDDEN(__savedata_vma = .); |
| HIDDEN(__savedata_lma = .); /* Dummy */ |
| .savedata (NOLOAD) : AT (__savedata_lma) { |
| HIDDEN(__savedata_start = .); |
| *(.savedata) |
| *(.savedata.*) |
| HIDDEN(__savedata_end = .); |
| } |
| HIDDEN(__savedata_len = ABSOLUTE(__savedata_end) - ABSOLUTE(__savedata_start)); |
| HIDDEN(__savedata_dwords = (__savedata_len + 3) >> 2); |
| |
| /* XXX: This stack should be unified with the COM32 stack */ |
| HIDDEN(__stack_vma = .); |
| __stack_lma = .; /* Dummy */ |
| .stack (NOLOAD) : AT(__stack_lma) { |
| HIDDEN(__stack_start = .); |
| *(.stack) |
| HIDDEN(__stack_end = .); |
| } |
| HIDDEN(__stack_len = ABSOLUTE(__stack_end) - ABSOLUTE(__stack_start)); |
| HIDDEN(__stack_dwords = (__stack_len + 3) >> 2); |
| |
| HIDDEN(_end = .); |
| |
| /* Heap follows after our own PM code */ |
| . = ALIGN(65536); |
| HIDDEN(free_high_memory = .); |
| |
| /* Stuff we don't need... */ |
| /DISCARD/ : { |
| *(.eh_frame) |
| } |
| } |
