gnu-efi/gnuefi/elf_x86_64_efi.lds
Nigel Croxon 11a459ba96 This patch makes the following symbols (relatively) consistent between
all of our linker scripts:

_text
_etext
_text_size
_data
_edata
_data_size

There are various things that are slightly different (positions of
.rela*, .dynamic, and similar in relation to .data), but _text and _data
are now always at the beginning of their respective sections with regard
to how a debuger would reference the debug info, and _etext and _edata
are now always extant and guaranteed to be after any of the respective
kind of data the debugger would look for in that section.

This also adds an application example of how it might be used, and a
makefile target for %.efi.debug which will generate a separate debuginfo
file for that example.

This also enables debugging by default (i.e. -g is in CFLAGS) and adds
.note.gnu.build-id sections to our .so files (i.e. --build-id=sha1 is in
LDFLAGS).

Signed-off-by: Peter Jones <pjones@redhat.com>
Signed-off-by: Nigel Croxon <nigel.croxon@hp.com>
2015-07-16 12:31:23 -04:00

73 lines
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/* Same as elf_x86_64_fbsd_efi.lds, except for OUTPUT_FORMAT below - KEEP IN SYNC */
OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
OUTPUT_ARCH(i386:x86-64)
ENTRY(_start)
SECTIONS
{
. = 0;
ImageBase = .;
.hash : { *(.hash) } /* this MUST come first! */
. = ALIGN(4096);
.eh_frame :
{
*(.eh_frame)
}
. = ALIGN(4096);
.text :
{
_text = .;
*(.text)
*(.text.*)
*(.gnu.linkonce.t.*)
. = ALIGN(16);
}
_etext = .;
_text_size = . - _text;
. = ALIGN(4096);
.reloc :
{
*(.reloc)
}
. = ALIGN(4096);
.data :
{
_data = .;
*(.rodata*)
*(.got.plt)
*(.got)
*(.data*)
*(.sdata)
/* the EFI loader doesn't seem to like a .bss section, so we stick
it all into .data: */
*(.sbss)
*(.scommon)
*(.dynbss)
*(.bss)
*(COMMON)
*(.rel.local)
}
_edata = .;
_data_size = . - _etext;
. = ALIGN(4096);
.dynamic : { *(.dynamic) }
. = ALIGN(4096);
.rela :
{
*(.rela.data*)
*(.rela.got)
*(.rela.stab)
}
. = ALIGN(4096);
.dynsym : { *(.dynsym) }
. = ALIGN(4096);
.dynstr : { *(.dynstr) }
. = ALIGN(4096);
.ignored.reloc :
{
*(.rela.reloc)
*(.eh_frame)
*(.note.GNU-stack)
}
.comment 0 : { *(.comment) }
}