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