diff options
Diffstat (limited to 'contrib/syslinux-4.02/gpxe/src/arch/i386/scripts/i386.lds')
| -rw-r--r-- | contrib/syslinux-4.02/gpxe/src/arch/i386/scripts/i386.lds | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/contrib/syslinux-4.02/gpxe/src/arch/i386/scripts/i386.lds b/contrib/syslinux-4.02/gpxe/src/arch/i386/scripts/i386.lds new file mode 100644 index 0000000..33c75f9 --- /dev/null +++ b/contrib/syslinux-4.02/gpxe/src/arch/i386/scripts/i386.lds @@ -0,0 +1,202 @@ +/* -*- 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 ); +} |