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74cd06b42e
After our migration (of certain architectures) to lld the kernel is built with a unique build-ID. Make it available via a sysctl and uname(1) to allow the user to identify their running kernel. Submitted by: Ali Mashtizadeh <ali_mashtizadeh.com> MFC after: 2 weeks Relnotes: Yes Event: Waterloo Hackathon 2019 Differential Revision: https://reviews.freebsd.org/D20326
154 lines
4.3 KiB
Plaintext
154 lines
4.3 KiB
Plaintext
/* $FreeBSD$ */
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OUTPUT_ARCH(aarch64)
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ENTRY(_start)
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SEARCH_DIR(/usr/lib);
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SECTIONS
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{
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/* Read-only sections, merged into text segment: */
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. = kernbase + SIZEOF_HEADERS;
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.text :
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{
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*(.text)
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*(.stub)
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/* .gnu.warning sections are handled specially by elf32.em. */
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*(.gnu.warning)
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*(.gnu.linkonce.t*)
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} =0x9090
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_etext = .;
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PROVIDE (etext = .);
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.fini : { *(.fini) } =0x9090
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.rodata : { *(.rodata*) *(.gnu.linkonce.r*) }
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.note.gnu.build-id : {
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PROVIDE (__build_id_start = .);
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*(.note.gnu.build-id)
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PROVIDE (__build_id_end = .);
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}
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.rel.text :
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{ *(.rel.text) *(.rel.gnu.linkonce.t*) }
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.rela.text :
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{ *(.rela.text) *(.rela.gnu.linkonce.t*) }
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.rel.data :
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{ *(.rel.data) *(.rel.gnu.linkonce.d*) }
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{ *(.rela.data) *(.rela.gnu.linkonce.d*) }
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{ *(.rel.rodata) *(.rel.gnu.linkonce.r*) }
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{ *(.rela.rodata) *(.rela.gnu.linkonce.r*) }
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. = ALIGN(4);
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_extab_start = .;
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PROVIDE(extab_start = .);
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.ARM.extab : { *(.ARM.extab) }
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PROVIDE(extab_end = .);
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PROVIDE(exidx_start = .);
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PROVIDE(exidx_end = .);
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/* Adjust the address for the data segment. We want to adjust up to
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the same address within the page on the next page up. */
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. = ALIGN(0x1000) + (. & (0x1000 - 1)) ;
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.data :
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{
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*(.data)
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*(.gnu.linkonce.d*)
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}
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. = ALIGN(32 / 8);
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_start_ctors = .;
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PROVIDE (start_ctors = .);
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.ctors :
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{
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*(.ctors)
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}
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_stop_ctors = .;
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PROVIDE (stop_ctors = .);
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.dtors :
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{
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*(.dtors)
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}
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.got : { *(.got.plt) *(.got) }
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.dynamic : { *(.dynamic) }
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/* We want the small data sections together, so single-instruction offsets
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can access them all, and initialized data all before uninitialized, so
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we can shorten the on-disk segment size. */
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. = ALIGN(8);
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.sdata : { *(.sdata) }
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_edata = .;
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PROVIDE (edata = .);
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__bss_start = .;
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.sbss : { *(.sbss) *(.scommon) }
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.bss :
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{
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*(.dynbss)
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*(.bss)
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*(COMMON)
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}
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. = ALIGN(8);
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_end = . ;
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PROVIDE (end = .);
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/* Stabs debugging sections. */
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.comment 0 : { *(.comment) }
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/* DWARF debug sections.
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Symbols in the DWARF debugging sections are relative to the beginning
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of the section so we begin them at 0. */
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/* DWARF 1 */
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.debug 0 : { *(.debug) }
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.line 0 : { *(.line) }
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/* GNU DWARF 1 extensions */
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.debug_srcinfo 0 : { *(.debug_srcinfo) }
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.debug_sfnames 0 : { *(.debug_sfnames) }
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/* DWARF 1.1 and DWARF 2 */
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.debug_aranges 0 : { *(.debug_aranges) }
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.debug_pubnames 0 : { *(.debug_pubnames) }
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/* DWARF 2 */
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.debug_info 0 : { *(.debug_info) }
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.debug_abbrev 0 : { *(.debug_abbrev) }
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.debug_line 0 : { *(.debug_line) }
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.debug_str 0 : { *(.debug_str) }
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.debug_loc 0 : { *(.debug_loc) }
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.debug_macinfo 0 : { *(.debug_macinfo) }
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/* SGI/MIPS DWARF 2 extensions */
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.debug_weaknames 0 : { *(.debug_weaknames) }
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.debug_funcnames 0 : { *(.debug_funcnames) }
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.debug_typenames 0 : { *(.debug_typenames) }
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.debug_varnames 0 : { *(.debug_varnames) }
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/* These must appear regardless of . */
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}
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