cosmopolitan/libc/elf/elf.lds

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/*-*- mode: ld-script; indent-tabs-mode: nil; tab-width: 2; coding: utf-8 -*-│
│vi: set et sts=2 tw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2020 Justine Alexandra Roberts Tunney │
│ │
│ 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; version 2 of the License. │
│ │
│ This program is distributed in the hope that it will be useful, but │
│ WITHOUT ANY WARRANTY; without even the implied warranty of │
│ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU │
│ General Public License for more details. │
│ │
│ You should have received a copy of the GNU General Public License │
│ along with this program; if not, write to the Free Software │
│ Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA │
│ 02110-1301 USA │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "ape/relocations.h"
/**
* @fileoverview Cosmopolitan ELF-Normative Linker Script.
*
* This linker script is an alternative to αcτµαlly pδrταblε εxεcµταblε.
* It's intended for host-only binaries that don't need to be able to run
* without an operating system, and don't need to be distributed. These
* are still static executables, and they start at roughly 1kb in size.
*
* @see ape/ape.lds
*/
ENTRY(_start)
SECTIONS {
. = SEGMENT_START("text-segment", IMAGE_BASE_VIRTUAL) + SIZEOF_HEADERS;
.real : {
HIDDEN(_base = .);
*(.text.real)
HIDDEN(_ereal = .);
}
.start : {
*(.start)
KEEP(*(.initprologue))
KEEP(*(SORT_BY_NAME(.init.*)))
KEEP(*(SORT_NONE(.init)))
KEEP(*(.initepilogue))
*(.text.startup)
}
.exit : {
*(.text.exit)
}
.cold : {
*(.text.unlikely)
}
.windows : {
*(.textwindowsprologue)
*(.text.windows) /* ← you can flip the windows bit in -DSUPPORT_VECTOR */
*(.textwindowsepilogue)
}
.text : {
*(SORT_BY_ALIGNMENT(.text.hot))
KEEP(*(.keep.text))
*(.text .text.*)
KEEP(*(SORT_BY_NAME(.sort.text.*)))
}
.test : {
HIDDEN(__test_start = .);
*(.test.unlikely)
*(.test .test.*)
}
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. = ALIGN(DEFINED(ftrace_init) ? PAGESIZE : 1);
HIDDEN(__privileged_start = .);
*(.privileged)
}
.rodata : {
HIDDEN(__ro = .); /* ←for gdb readibility */
/* Read-Only Data */
*(.rodata .rodata.*)
KEEP(*(SORT_BY_NAME(.sort.rodata.*)))
/* DSO stuff */
PROVIDE_HIDDEN(__got_plt = .);
*(.got.plt)
/* Windows DLL Import Directory */
HIDDEN(idata.ro = .);
KEEP(*(SORT_BY_NAME(.idata.ro.*)))
}
.initro : {
/* Encoded Data Structures */
KEEP(*(.initroprologue))
KEEP(*(SORT_BY_NAME(.initro.*)))
KEEP(*(.initroepilogue))
}
.ubsan : {
/* Undefined Behavior Sanitizer Types */
PROVIDE_HIDDEN(__ubsan_types_start = .);
*(.ubsan.types)
PROVIDE_HIDDEN(__ubsan_types_end = .);
PROVIDE_HIDDEN(__ubsan_data_start = .);
*(.ubsan.data)
PROVIDE_HIDDEN(__ubsan_data_end = .);
}
HIDDEN(_etext = .);
PROVIDE_HIDDEN(etext = .);
. = DATA_SEGMENT_ALIGN(CONSTANT(MAXPAGESIZE), CONSTANT(COMMONPAGESIZE));
.data : {
*(.data .data.*)
KEEP(*(SORT_BY_NAME(.sort.data.*)))
SORT(CONSTRUCTORS)
KEEP(*(.edata))
. = ALIGN(__SIZEOF_POINTER__);
HIDDEN(__piro_start = .);
QUAD(IMAGE_BASE_VIRTUAL);
PROVIDE_HIDDEN(__init_array_start = .);
KEEP(*(.preinit_array))
KEEP(*(SORT_BY_INIT_PRIORITY(.init_array.*)
SORT_BY_INIT_PRIORITY(.ctors.*)))
KEEP(*(SORT_NONE(.init_array)))
KEEP(*(SORT_NONE(.ctors)))
PROVIDE_HIDDEN(__init_array_end = .);
PROVIDE_HIDDEN(__fini_array_start = .);
KEEP(*(SORT_BY_INIT_PRIORITY(.fini_array.*)
SORT_BY_INIT_PRIORITY(.dtors.*)))
KEEP(*(SORT_NONE(.fini_array)))
KEEP(*(SORT_NONE(.dtors)))
PROVIDE_HIDDEN(__fini_array_end = .);
KEEP(*(SORT_BY_NAME(.piro.relo.sort.*)))
*(.data.rel.ro .data.rel.ro.*)
PROVIDE_HIDDEN(__relo_end = .);
KEEP(*(SORT_BY_NAME(.piro.data.sort.*)))
}
HIDDEN(_edata = .);
PROVIDE_HIDDEN(edata = .);
.bss : {
KEEP(*(SORT_BY_NAME(.piro.bss.init.*)))
*(.piro.bss)
KEEP(*(SORT_BY_NAME(.piro.bss.sort.*)))
HIDDEN(__piro_end = .);
*(.bss .bss.*)
*(COMMON)
KEEP(*(SORT_BY_NAME(.sort.bss.*)))
. = ALIGN(ABSOLUTE(.) - IMAGE_BASE_VIRTUAL > 0x80000000 ? 0x80000000 :
ABSOLUTE(.) - IMAGE_BASE_VIRTUAL > 0x200000 ? 0x200000 : 0x1000);
*(.xlm)
. = ALIGN(ABSOLUTE(.) - IMAGE_BASE_VIRTUAL > 0x80000000 ? 0x80000000 :
ABSOLUTE(.) - IMAGE_BASE_VIRTUAL > 0x200000 ? 0x200000 : 0x1000);
. = ALIGN(. != 0 ? __SIZEOF_POINTER__ : 1);
}
HIDDEN(_end = .);
PROVIDE_HIDDEN(end = .);
.gnu_debuglink 0 : { *(.gnu_debuglink) }
.stab 0 : { *(.stab) }
.stabstr 0 : { *(.stabstr) }
.stab.excl 0 : { *(.stab.excl) }
.stab.exclstr 0 : { *(.stab.exclstr) }
.stab.index 0 : { *(.stab.index) }
.stab.indexstr 0 : { *(.stab.indexstr) }
.debug 0 : { *(.debug) }
.line 0 : { *(.line) }
.debug_srcinfo 0 : { *(.debug_srcinfo) }
.debug_sfnames 0 : { *(.debug_sfnames) }
.debug_aranges 0 : { *(.debug_aranges) }
.debug_pubnames 0 : { *(.debug_pubnames) }
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
.debug_abbrev 0 : { *(.debug_abbrev) }
.debug_line 0 : { *(.debug_line .debug_line.* .debug_line_end ) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
.debug_loc 0 : { *(.debug_loc) }
.debug_macinfo 0 : { *(.debug_macinfo) }
.debug_weaknames 0 : { *(.debug_weaknames) }
.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
.debug_pubtypes 0 : { *(.debug_pubtypes) }
.debug_ranges 0 : { *(.debug_ranges) }
.debug_macro 0 : { *(.debug_macro) }
.debug_addr 0 : { *(.debug_addr) }
.gnu.attributes 0 : { KEEP(*(.gnu.attributes)) }
.GCC.command.line 0 : { *(.GCC.command.line) }
/DISCARD/ : {
*(.comment)
*(.discard)
*(.yoink)
*(.*)
}
}