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/* -*- sh -*- */
/*
* Linker script for i386 images
*
*/
SECTIONS {
/* Each section starts at a virtual address of zero.
*
* We guarantee alignment of virtual addresses to any alignment
* specified by the constituent object files (e.g. via
* __attribute__((aligned(x)))). Load addresses are guaranteed
* only up to _max_align. Provided that all loader and relocation
* code honours _max_align, this means that physical addresses are
* also guaranteed up to _max_align.
*
* Note that when using -DKEEP_IT_REAL, the UNDI segments are only
* guaranteed to be loaded on a paragraph boundary (i.e. 16-byte
* alignment). Using _max_align>16 will therefore not guarantee
* >16-byte alignment of physical addresses when -DKEEP_IT_REAL is
* used (though virtual addresses will still be fully aligned).
*
*/
/*
* The prefix
*
*/
.prefix 0x0 : AT ( _prefix_lma ) {
_prefix = .;
*(.prefix)
*(.prefix.*)
_mprefix = .;
} .bss.prefix (NOLOAD) : AT ( _end_lma ) {
_eprefix = .;
}
_prefix_filesz = ABSOLUTE ( _mprefix - _prefix );
_prefix_memsz = ABSOLUTE ( _eprefix - _prefix );
/*
* The 16-bit (real-mode) code section
*
*/
.text16 0x0 : AT ( _text16_lma ) {
_text16 = .;
*(.text16.null)
. += 1; /* Prevent NULL being valid */
*(.text16)
*(.text16.*)
_mtext16 = .;
} .bss.text16 (NOLOAD) : AT ( _end_lma ) {
_etext16 = .;
}
_text16_filesz = ABSOLUTE ( _mtext16 - _text16 );
_text16_memsz = ABSOLUTE ( _etext16 - _text16 );
/*
* The 16-bit (real-mode) data section
*
*/
.data16 0x0 : AT ( _data16_lma ) {
_data16 = .;
. += 1; /* Prevent NULL being valid */
*(.rodata16)
*(.rodata16.*)
*(.data16)
*(.data16.*)
_mdata16 = .;
} .bss.data16 (NOLOAD) : AT ( _end_lma ) {
*(.bss16)
*(.bss16.*)
*(.stack16)
*(.stack16.*)
_edata16 = .;
}
_data16_filesz = ABSOLUTE ( _mdata16 - _data16 );
_data16_memsz = ABSOLUTE ( _edata16 - _data16 );
/*
* The 32-bit sections
*
*/
.textdata 0x0 : AT ( _textdata_lma ) {
_textdata = .;
*(.text.null_trap)
. += 1; /* Prevent NULL being valid */
*(.text)
*(.text.*)
*(.rodata)
*(.rodata.*)
*(.data)
*(.data.*)
*(SORT(.tbl.*)) /* Various tables. See include/tables.h */
_mtextdata = .;
} .bss.textdata (NOLOAD) : AT ( _end_lma ) {
*(.bss)
*(.bss.*)
*(COMMON)
*(.stack)
*(.stack.*)
_etextdata = .;
}
_textdata_filesz = ABSOLUTE ( _mtextdata - _textdata );
_textdata_memsz = ABSOLUTE ( _etextdata - _textdata );
/*
* Compressor information block
*
*/
.zinfo 0x0 : AT ( _zinfo_lma ) {
_zinfo = .;
*(.zinfo)
*(.zinfo.*)
_mzinfo = .;
} .bss.zinfo (NOLOAD) : AT ( _end_lma ) {
_ezinfo = .;
}
_zinfo_filesz = ABSOLUTE ( _mzinfo - _zinfo );
_zinfo_memsz = ABSOLUTE ( _ezinfo - _zinfo );
/*
* Weak symbols that need zero values if not otherwise defined
*
*/
.weak 0x0 : AT ( _end_lma ) {
_weak = .;
*(.weak)
_eweak = .;
}
_assert = ASSERT ( ( _weak == _eweak ), ".weak is non-zero length" );
/*
* Dispose of the comment and note sections to make the link map
* easier to read
*
*/
/DISCARD/ : {
*(.comment)
*(.comment.*)
*(.note)
*(.note.*)
*(.eh_frame)
*(.eh_frame.*)
*(.rel)
*(.rel.*)
*(.discard)
}
/*
* Load address calculations. In older versions of ld, ALIGN()
* can operate only on the location counter, so we use that.
*
*/
PROVIDE ( _max_align = 16 );
. = 0;
. = ALIGN ( _max_align );
_prefix_lma = .;
. += _prefix_filesz;
. = ALIGN ( _max_align );
_payload_lma = .;
_text16_lma = .;
. += _text16_filesz;
. = ALIGN ( _max_align );
_data16_lma = .;
. += _data16_filesz;
. = ALIGN ( _max_align );
_textdata_lma = .;
. += _textdata_filesz;
_filesz = .; /* Do not include zinfo block in file size */
. = ALIGN ( _max_align );
_zinfo_lma = .;
. += _zinfo_filesz;
. = ALIGN ( _max_align );
_end_lma = .;
/*
* Values calculated to save code from doing it
*
*/
_prefix_filesz_sect = ( ( _prefix_filesz + 511 ) / 512 );
_prefix_memsz_pgh = ( ( _prefix_memsz + 15 ) / 16 );
_prefix_memsz_sect = ( ( _prefix_memsz + 511 ) / 512 );
_text16_memsz_pgh = ( ( _text16_memsz + 15 ) / 16 );
_data16_memsz_pgh = ( ( _data16_memsz + 15 ) / 16 );
}
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