ldscript.amd64 revision 317145
1/* $FreeBSD: stable/11/sys/conf/ldscript.amd64 317145 2017-04-19 15:33:24Z emaste $ */
2OUTPUT_FORMAT("elf64-x86-64-freebsd", "elf64-x86-64-freebsd", "elf64-x86-64-freebsd")
3OUTPUT_ARCH(i386:x86-64)
4ENTRY(btext)
5SEARCH_DIR("/usr/lib");
6SECTIONS
7{
8  /* Read-only sections, merged into text segment: */
9  kernphys = CONSTANT (MAXPAGESIZE);
10  . = kernbase + kernphys + SIZEOF_HEADERS;
11  /*
12   * Use the AT keyword in order to set the right LMA that contains
13   * the physical address where the section should be loaded. This is
14   * needed for the Xen loader which honours the LMA.
15   */
16  .interp         : AT (kernphys + SIZEOF_HEADERS) { *(.interp) }
17  .hash           : { *(.hash) }
18  .gnu.hash       : { *(.gnu.hash) }
19  .dynsym         : { *(.dynsym) }
20  .dynstr         : { *(.dynstr) }
21  .gnu.version    : { *(.gnu.version) }
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24  .rel.init       : { *(.rel.init) }
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26  .rel.text       : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
27  .rela.text      : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
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33  .rela.data.rel.ro   : { *(.rela.data.rel.ro* .rela.gnu.linkonce.d.rel.ro.*) }
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68  .fini           :
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70    KEEP (*(.fini))
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80  /* Adjust the address for the data segment.  We want to adjust up to
81     the same address within the page on the next page up.  */
82  . = ALIGN (CONSTANT (MAXPAGESIZE)) - ((CONSTANT (MAXPAGESIZE) - .) & (CONSTANT (MAXPAGESIZE) - 1)); . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
83  /* Exception handling  */
84  .eh_frame       : ONLY_IF_RW { KEEP (*(.eh_frame)) }
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93    PROVIDE_HIDDEN (__preinit_array_end = .);
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97     PROVIDE_HIDDEN (__init_array_start = .);
98     KEEP (*(SORT(.init_array.*)))
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100     PROVIDE_HIDDEN (__init_array_end = .);
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104    PROVIDE_HIDDEN (__fini_array_start = .);
105    KEEP (*(.fini_array))
106    KEEP (*(SORT(.fini_array.*)))
107    PROVIDE_HIDDEN (__fini_array_end = .);
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110  PROVIDE (start_ctors = .);
111  .ctors          :
112  {
113    /* gcc uses crtbegin.o to find the start of
114       the constructors, so we make sure it is
115       first.  Because this is a wildcard, it
116       doesn't matter if the user does not
117       actually link against crtbegin.o; the
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120       doesn't matter which directory crtbegin.o
121       is in.  */
122    KEEP (*crtbegin.o(.ctors))
123    KEEP (*crtbegin?.o(.ctors))
124    /* We don't want to include the .ctor section from
125       the crtend.o file until after the sorted ctors.
126       The .ctor section from the crtend file contains the
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128    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
129    KEEP (*(SORT(.ctors.*)))
130    KEEP (*(.ctors))
131  }
132  _stop_ctors = .;
133  PROVIDE (stop_ctors = .);
134  .dtors          :
135  {
136    KEEP (*crtbegin.o(.dtors))
137    KEEP (*crtbegin?.o(.dtors))
138    KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
139    KEEP (*(SORT(.dtors.*)))
140    KEEP (*(.dtors))
141  }
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156    *(.data.exclusive_cache_line)
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160  {
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162    KEEP (*(.gnu.linkonce.d.*personality*))
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168  {
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172   /* Align here to ensure that the .bss section occupies space up to
173      _end.  Align after .bss to ensure correct alignment even if the
174      .bss section disappears because there are no input sections.
175      FIXME: Why do we need it? When there is no .bss section, we don't
176      pad the .data section.  */
177   . = ALIGN(. != 0 ? 64 / 8 : 1);
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196  _end = .; PROVIDE (end = .);
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198  /* Stabs debugging sections.  */
199  .stab          0 : { *(.stab) }
200  .stabstr       0 : { *(.stabstr) }
201  .stab.excl     0 : { *(.stab.excl) }
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203  .stab.index    0 : { *(.stab.index) }
204  .stab.indexstr 0 : { *(.stab.indexstr) }
205  .comment       0 : { *(.comment) }
206  /* DWARF debug sections.
207     Symbols in the DWARF debugging sections are relative to the beginning
208     of the section so we begin them at 0.  */
209  /* DWARF 1 */
210  .debug          0 : { *(.debug) }
211  .line           0 : { *(.line) }
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233  .debug_ranges   0 : { *(.debug_ranges) }
234  .gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
235  /DISCARD/ : { *(.note.GNU-stack) }
236}
237