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authorchandramouli narayanan <mouli@linux.intel.com>2012-06-25 12:43:03 -0700
committerchandramouli narayanan <mouli@linux.intel.com>2012-06-25 12:43:03 -0700
commitd8eede3f2a360163235fad222a0190cd7c5bef38 (patch)
tree5e1b28e31fc14c44d8fdfffda00a30aaad2b7b7b /memdisk
parentb664835d1583be53f34b412b38df53f21f100e24 (diff)
downloadsyslinux-d8eede3f2a360163235fad222a0190cd7c5bef38.tar.gz
syslinux-d8eede3f2a360163235fad222a0190cd7c5bef38.tar.xz
syslinux-d8eede3f2a360163235fad222a0190cd7c5bef38.zip
This is a giant patch that splits the linker scripts for libraries, modules and executables into
the architecture-dependent scripts to facilitate building syslinux modules/executables for i386 and x86_64 environments. The x86_64 linker scripts are derived from the earlier i386 counterparts. Subdirectories i386 and x86_64 hold the respective linker scripts mentioned below. com32/lib/sylinux.ld com32/lib/elf.ld core/syslinux.ld efi/syslinux.ld mbr/mbr.ld memdisk/memdisk.ld Remanants of the unused old i386-only files, if any, need to be pruned.
Diffstat (limited to 'memdisk')
-rw-r--r--memdisk/i386/memdisk.ld140
-rw-r--r--memdisk/x86_64/memdisk.ld140
2 files changed, 280 insertions, 0 deletions
diff --git a/memdisk/i386/memdisk.ld b/memdisk/i386/memdisk.ld
new file mode 100644
index 00000000..51c3e35c
--- /dev/null
+++ b/memdisk/i386/memdisk.ld
@@ -0,0 +1,140 @@
+/* -----------------------------------------------------------------------
+ *
+ * Copyright 2009 Intel Corporation; author: H. Peter Anvin
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston MA 02110-1301, USA; either version 2 of the License, or
+ * (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * Linker script for MEMDISK
+ */
+
+/* Script for -z combreloc: combine and sort reloc sections */
+OUTPUT_FORMAT("elf32-i386", "elf32-i386", "elf32-i386")
+OUTPUT_ARCH(i386)
+EXTERN(_start)
+ENTRY(_start)
+SECTIONS
+{
+ /* Read-only sections, merged into text segment: */
+ . = 0x100000;
+ PROVIDE (__executable_start = .);
+
+ .init :
+ {
+ KEEP (*(.init))
+ } =0x90909090
+ .text :
+ {
+ *(.text .stub .text.* .gnu.linkonce.t.*)
+ /* .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) }
+
+ /* Ensure the __preinit_array_start label is properly aligned. We
+ could instead move the label definition inside the section, but
+ the linker would then create the section even if it turns out to
+ be empty, which isn't pretty. */
+ . = ALIGN(4);
+ PROVIDE (__preinit_array_start = .);
+ .preinit_array : { *(.preinit_array) }
+ PROVIDE (__preinit_array_end = .);
+ PROVIDE (__init_array_start = .);
+ .init_array : { *(.init_array) }
+ PROVIDE (__init_array_end = .);
+ PROVIDE (__fini_array_start = .);
+ .fini_array : { *(.fini_array) }
+ PROVIDE (__fini_array_end = .);
+ PROVIDE (__ctors_start = .);
+ .ctors :
+ {
+ KEEP (*(SORT(.ctors.*)))
+ KEEP (*(.ctors))
+ }
+ PROVIDE (__ctors_end = .);
+ PROVIDE (__dtors_start = .);
+ .dtors :
+ {
+ KEEP (*(SORT(.dtors.*)))
+ KEEP (*(.dtors))
+ }
+ PROVIDE (__dtors_end = .);
+
+ /* Adjust the address for the data segment. Avoid mixing code and
+ data within same 128-byte chunk. */
+ . = ALIGN(128);
+
+ .data :
+ {
+ *(.data .data.* .gnu.linkonce.d.*)
+ SORT(CONSTRUCTORS)
+ }
+ .data1 : { *(.data1) }
+ _edata = .;
+ PROVIDE (edata = .);
+ . = ALIGN(16);
+ .bss :
+ {
+ __bss_start = .;
+ *(.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. */
+ . = ALIGN(4);
+ __bss_end = .;
+ }
+ _end = .;
+ PROVIDE (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) }
+ /DISCARD/ : { *(.note.GNU-stack) }
+}
diff --git a/memdisk/x86_64/memdisk.ld b/memdisk/x86_64/memdisk.ld
new file mode 100644
index 00000000..76abb0c0
--- /dev/null
+++ b/memdisk/x86_64/memdisk.ld
@@ -0,0 +1,140 @@
+/* -----------------------------------------------------------------------
+ *
+ * Copyright 2009 Intel Corporation; author: H. Peter Anvin
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
+ * Boston MA 02110-1301, USA; either version 2 of the License, or
+ * (at your option) any later version; incorporated herein by reference.
+ *
+ * ----------------------------------------------------------------------- */
+
+/*
+ * Linker script for MEMDISK
+ */
+
+/* Script for -z combreloc: combine and sort reloc sections */
+OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64", "elf64-x86-64")
+OUTPUT_ARCH(i386:x86-64)
+EXTERN(_start)
+ENTRY(_start)
+SECTIONS
+{
+ /* Read-only sections, merged into text segment: */
+ . = 0x100000;
+ PROVIDE (__executable_start = .);
+
+ .init :
+ {
+ KEEP (*(.init))
+ } =0x90909090
+ .text :
+ {
+ *(.text .stub .text.* .gnu.linkonce.t.*)
+ /* .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) }
+
+ /* Ensure the __preinit_array_start label is properly aligned. We
+ could instead move the label definition inside the section, but
+ the linker would then create the section even if it turns out to
+ be empty, which isn't pretty. */
+ . = ALIGN(4);
+ PROVIDE (__preinit_array_start = .);
+ .preinit_array : { *(.preinit_array) }
+ PROVIDE (__preinit_array_end = .);
+ PROVIDE (__init_array_start = .);
+ .init_array : { *(.init_array) }
+ PROVIDE (__init_array_end = .);
+ PROVIDE (__fini_array_start = .);
+ .fini_array : { *(.fini_array) }
+ PROVIDE (__fini_array_end = .);
+ PROVIDE (__ctors_start = .);
+ .ctors :
+ {
+ KEEP (*(SORT(.ctors.*)))
+ KEEP (*(.ctors))
+ }
+ PROVIDE (__ctors_end = .);
+ PROVIDE (__dtors_start = .);
+ .dtors :
+ {
+ KEEP (*(SORT(.dtors.*)))
+ KEEP (*(.dtors))
+ }
+ PROVIDE (__dtors_end = .);
+
+ /* Adjust the address for the data segment. Avoid mixing code and
+ data within same 128-byte chunk. */
+ . = ALIGN(128);
+
+ .data :
+ {
+ *(.data .data.* .gnu.linkonce.d.*)
+ SORT(CONSTRUCTORS)
+ }
+ .data1 : { *(.data1) }
+ _edata = .;
+ PROVIDE (edata = .);
+ . = ALIGN(16);
+ .bss :
+ {
+ __bss_start = .;
+ *(.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. */
+ . = ALIGN(4);
+ __bss_end = .;
+ }
+ _end = .;
+ PROVIDE (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) }
+ /DISCARD/ : { *(.note.GNU-stack) }
+}