mirror of
https://git.FreeBSD.org/src.git
synced 2024-12-23 11:18:54 +00:00
1c675a3bc3
instead of 0x100000. As a side effect, an amd64 kernel now loads at physical address 0x200000 instead of 0x100000. This is probably for the best because it avoids the use of a 2MB page mapping for the first 1MB of the kernel that also spans the fixed MTRRs. However, getmemsize() still thinks that the kernel loads at 0x100000, and so the physical memory between 0x100000 and 0x200000 is lost. Fix this problem by replacing the hard-wired constant in getmemsize() by a symbol "kernphys" that is defined by the linker script. In collaboration with: kib
222 lines
8.3 KiB
Plaintext
222 lines
8.3 KiB
Plaintext
/* $FreeBSD$ */
|
|
OUTPUT_FORMAT("elf64-x86-64-freebsd", "elf64-x86-64-freebsd", "elf64-x86-64-freebsd")
|
|
OUTPUT_ARCH(i386:x86-64)
|
|
ENTRY(btext)
|
|
SEARCH_DIR("/usr/lib");
|
|
SECTIONS
|
|
{
|
|
/* Read-only sections, merged into text segment: */
|
|
kernphys = CONSTANT (MAXPAGESIZE);
|
|
. = kernbase + kernphys + SIZEOF_HEADERS;
|
|
.interp : { *(.interp) }
|
|
.hash : { *(.hash) }
|
|
.gnu.hash : { *(.gnu.hash) }
|
|
.dynsym : { *(.dynsym) }
|
|
.dynstr : { *(.dynstr) }
|
|
.gnu.version : { *(.gnu.version) }
|
|
.gnu.version_d : { *(.gnu.version_d) }
|
|
.gnu.version_r : { *(.gnu.version_r) }
|
|
.rel.init : { *(.rel.init) }
|
|
.rela.init : { *(.rela.init) }
|
|
.rel.text : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
|
|
.rela.text : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
|
|
.rel.fini : { *(.rel.fini) }
|
|
.rela.fini : { *(.rela.fini) }
|
|
.rel.rodata : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
|
|
.rela.rodata : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
|
|
.rel.data.rel.ro : { *(.rel.data.rel.ro* .rel.gnu.linkonce.d.rel.ro.*) }
|
|
.rela.data.rel.ro : { *(.rela.data.rel.ro* .rela.gnu.linkonce.d.rel.ro.*) }
|
|
.rel.data : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
|
|
.rela.data : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
|
|
.rel.tdata : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }
|
|
.rela.tdata : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
|
|
.rel.tbss : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
|
|
.rela.tbss : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
|
|
.rel.ctors : { *(.rel.ctors) }
|
|
.rela.ctors : { *(.rela.ctors) }
|
|
.rel.dtors : { *(.rel.dtors) }
|
|
.rela.dtors : { *(.rela.dtors) }
|
|
.rel.got : { *(.rel.got) }
|
|
.rela.got : { *(.rela.got) }
|
|
.rel.bss : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
|
|
.rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
|
|
.rel.ldata : { *(.rel.ldata .rel.ldata.* .rel.gnu.linkonce.l.*) }
|
|
.rela.ldata : { *(.rela.ldata .rela.ldata.* .rela.gnu.linkonce.l.*) }
|
|
.rel.lbss : { *(.rel.lbss .rel.lbss.* .rel.gnu.linkonce.lb.*) }
|
|
.rela.lbss : { *(.rela.lbss .rela.lbss.* .rela.gnu.linkonce.lb.*) }
|
|
.rel.lrodata : { *(.rel.lrodata .rel.lrodata.* .rel.gnu.linkonce.lr.*) }
|
|
.rela.lrodata : { *(.rela.lrodata .rela.lrodata.* .rela.gnu.linkonce.lr.*) }
|
|
.rel.plt : { *(.rel.plt) }
|
|
.rela.plt : { *(.rela.plt) }
|
|
.init :
|
|
{
|
|
KEEP (*(.init))
|
|
} =0x90909090
|
|
.plt : { *(.plt) }
|
|
.text :
|
|
{
|
|
*(.text .stub .text.* .gnu.linkonce.t.*)
|
|
KEEP (*(.text.*personality*))
|
|
/* .gnu.warning sections are handled specially by elf32.em. */
|
|
*(.gnu.warning)
|
|
} =0x90909090
|
|
.fini :
|
|
{
|
|
KEEP (*(.fini))
|
|
} =0x90909090
|
|
PROVIDE (__etext = .);
|
|
PROVIDE (_etext = .);
|
|
PROVIDE (etext = .);
|
|
.rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
|
|
.rodata1 : { *(.rodata1) }
|
|
.eh_frame_hdr : { *(.eh_frame_hdr) }
|
|
.eh_frame : ONLY_IF_RO { KEEP (*(.eh_frame)) }
|
|
.gcc_except_table : ONLY_IF_RO { *(.gcc_except_table .gcc_except_table.*) }
|
|
/* Adjust the address for the data segment. We want to adjust up to
|
|
the same address within the page on the next page up. */
|
|
. = ALIGN (CONSTANT (MAXPAGESIZE)) - ((CONSTANT (MAXPAGESIZE) - .) & (CONSTANT (MAXPAGESIZE) - 1)); . = DATA_SEGMENT_ALIGN (CONSTANT (MAXPAGESIZE), CONSTANT (COMMONPAGESIZE));
|
|
/* Exception handling */
|
|
.eh_frame : ONLY_IF_RW { KEEP (*(.eh_frame)) }
|
|
.gcc_except_table : ONLY_IF_RW { *(.gcc_except_table .gcc_except_table.*) }
|
|
/* Thread Local Storage sections */
|
|
.tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
|
|
.tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
|
|
.preinit_array :
|
|
{
|
|
PROVIDE_HIDDEN (__preinit_array_start = .);
|
|
KEEP (*(.preinit_array))
|
|
PROVIDE_HIDDEN (__preinit_array_end = .);
|
|
}
|
|
.init_array :
|
|
{
|
|
PROVIDE_HIDDEN (__init_array_start = .);
|
|
KEEP (*(SORT(.init_array.*)))
|
|
KEEP (*(.init_array))
|
|
PROVIDE_HIDDEN (__init_array_end = .);
|
|
}
|
|
.fini_array :
|
|
{
|
|
PROVIDE_HIDDEN (__fini_array_start = .);
|
|
KEEP (*(.fini_array))
|
|
KEEP (*(SORT(.fini_array.*)))
|
|
PROVIDE_HIDDEN (__fini_array_end = .);
|
|
}
|
|
_start_ctors = .;
|
|
PROVIDE (start_ctors = .);
|
|
.ctors :
|
|
{
|
|
/* gcc uses crtbegin.o to find the start of
|
|
the constructors, so we make sure it is
|
|
first. Because this is a wildcard, it
|
|
doesn't matter if the user does not
|
|
actually link against crtbegin.o; the
|
|
linker won't look for a file to match a
|
|
wildcard. The wildcard also means that it
|
|
doesn't matter which directory crtbegin.o
|
|
is in. */
|
|
KEEP (*crtbegin.o(.ctors))
|
|
KEEP (*crtbegin?.o(.ctors))
|
|
/* We don't want to include the .ctor section from
|
|
the crtend.o file until after the sorted ctors.
|
|
The .ctor section from the crtend file contains the
|
|
end of ctors marker and it must be last */
|
|
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .ctors))
|
|
KEEP (*(SORT(.ctors.*)))
|
|
KEEP (*(.ctors))
|
|
}
|
|
_stop_ctors = .;
|
|
PROVIDE (stop_ctors = .);
|
|
.dtors :
|
|
{
|
|
KEEP (*crtbegin.o(.dtors))
|
|
KEEP (*crtbegin?.o(.dtors))
|
|
KEEP (*(EXCLUDE_FILE (*crtend.o *crtend?.o ) .dtors))
|
|
KEEP (*(SORT(.dtors.*)))
|
|
KEEP (*(.dtors))
|
|
}
|
|
.jcr : { KEEP (*(.jcr)) }
|
|
.data.rel.ro : { *(.data.rel.ro.local* .gnu.linkonce.d.rel.ro.local.*) *(.data.rel.ro* .gnu.linkonce.d.rel.ro.*) }
|
|
.dynamic : { *(.dynamic) }
|
|
.got : { *(.got) }
|
|
. = DATA_SEGMENT_RELRO_END (24, .);
|
|
.got.plt : { *(.got.plt) }
|
|
.data :
|
|
{
|
|
*(.data .data.* .gnu.linkonce.d.*)
|
|
KEEP (*(.gnu.linkonce.d.*personality*))
|
|
SORT(CONSTRUCTORS)
|
|
}
|
|
.data1 : { *(.data1) }
|
|
_edata = .; PROVIDE (edata = .);
|
|
__bss_start = .;
|
|
.bss :
|
|
{
|
|
*(.dynbss)
|
|
*(.bss .bss.* .gnu.linkonce.b.*)
|
|
*(COMMON)
|
|
/* Align here to ensure that the .bss section occupies space up to
|
|
_end. Align after .bss to ensure correct alignment even if the
|
|
.bss section disappears because there are no input sections.
|
|
FIXME: Why do we need it? When there is no .bss section, we don't
|
|
pad the .data section. */
|
|
. = ALIGN(. != 0 ? 64 / 8 : 1);
|
|
}
|
|
.lbss :
|
|
{
|
|
*(.dynlbss)
|
|
*(.lbss .lbss.* .gnu.linkonce.lb.*)
|
|
*(LARGE_COMMON)
|
|
}
|
|
. = ALIGN(64 / 8);
|
|
.lrodata ALIGN(CONSTANT (MAXPAGESIZE)) + (. & (CONSTANT (MAXPAGESIZE) - 1)) :
|
|
{
|
|
*(.lrodata .lrodata.* .gnu.linkonce.lr.*)
|
|
}
|
|
.ldata ALIGN(CONSTANT (MAXPAGESIZE)) + (. & (CONSTANT (MAXPAGESIZE) - 1)) :
|
|
{
|
|
*(.ldata .ldata.* .gnu.linkonce.l.*)
|
|
. = ALIGN(. != 0 ? 64 / 8 : 1);
|
|
}
|
|
. = ALIGN(64 / 8);
|
|
_end = .; PROVIDE (end = .);
|
|
. = DATA_SEGMENT_END (.);
|
|
/* Stabs debugging sections. */
|
|
.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) }
|
|
.comment 0 : { *(.comment) }
|
|
/* DWARF debug sections.
|
|
Symbols in the DWARF debugging sections are relative to the beginning
|
|
of the section so we begin them at 0. */
|
|
/* DWARF 1 */
|
|
.debug 0 : { *(.debug) }
|
|
.line 0 : { *(.line) }
|
|
/* GNU DWARF 1 extensions */
|
|
.debug_srcinfo 0 : { *(.debug_srcinfo) }
|
|
.debug_sfnames 0 : { *(.debug_sfnames) }
|
|
/* DWARF 1.1 and DWARF 2 */
|
|
.debug_aranges 0 : { *(.debug_aranges) }
|
|
.debug_pubnames 0 : { *(.debug_pubnames) }
|
|
/* DWARF 2 */
|
|
.debug_info 0 : { *(.debug_info .gnu.linkonce.wi.*) }
|
|
.debug_abbrev 0 : { *(.debug_abbrev) }
|
|
.debug_line 0 : { *(.debug_line) }
|
|
.debug_frame 0 : { *(.debug_frame) }
|
|
.debug_str 0 : { *(.debug_str) }
|
|
.debug_loc 0 : { *(.debug_loc) }
|
|
.debug_macinfo 0 : { *(.debug_macinfo) }
|
|
/* SGI/MIPS DWARF 2 extensions */
|
|
.debug_weaknames 0 : { *(.debug_weaknames) }
|
|
.debug_funcnames 0 : { *(.debug_funcnames) }
|
|
.debug_typenames 0 : { *(.debug_typenames) }
|
|
.debug_varnames 0 : { *(.debug_varnames) }
|
|
/* DWARF 3 */
|
|
.debug_pubtypes 0 : { *(.debug_pubtypes) }
|
|
.debug_ranges 0 : { *(.debug_ranges) }
|
|
.gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
|
|
/DISCARD/ : { *(.note.GNU-stack) }
|
|
}
|