linux/scripts
H. Peter Anvin 6520fe5564 x86, realmode: 16-bit real-mode code support for relocs tool
A new option is added to the relocs tool called '--realmode'.
This option causes the generation of 16-bit segment relocations
and 32-bit linear relocations for the real-mode code. When
the real-mode code is moved to the low-memory during kernel
initialization, these relocation entries can be used to
relocate the code properly.

In the assembly code 16-bit segment relocations must be relative
to the 'real_mode_seg' absolute symbol. Linear relocations must be
relative to a symbol prefixed with 'pa_'.

16-bit segment relocation is used to load cs:ip in 16-bit code.
Linear relocations are used in the 32-bit code for relocatable
data references. They are declared in the linker script of the
real-mode code.

The relocs tool is moved to arch/x86/tools/relocs.c, and added new
target archscripts that can be used to build scripts needed building
an architecture.  be compiled before building the arch/x86 tree.

[ hpa: accelerating this because it detects invalid absolute
  relocations, a serious bug in binutils 2.22.52.0.x which currently
  produces bad kernels. ]

Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Link: http://lkml.kernel.org/r/1336501366-28617-2-git-send-email-jarkko.sakkinen@intel.com
Signed-off-by: Jarkko Sakkinen <jarkko.sakkinen@intel.com>
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
Cc: <stable@vger.kernel.org>
2012-05-18 19:49:40 -07:00
..
basic
coccinelle
dtc
genksyms
kconfig
ksymoops
mod
package
rt-tester
selinux
tracing
.gitignore
bin2c.c
bloat-o-meter
bootgraph.pl
checkincludes.pl
checkkconfigsymbols.sh
checkpatch.pl
checkstack.pl
checksyscalls.sh
checkversion.pl
cleanfile
cleanpatch
coccicheck
config
conmakehash.c
decodecode
depmod.sh
diffconfig
docproc.c
export_report.pl
extract-ikconfig
extract-vmlinux
gcc-goto.sh
gcc-version.sh
gcc-x86_32-has-stack-protector.sh
gcc-x86_64-has-stack-protector.sh
gen_initramfs_list.sh
get_maintainer.pl
gfp-translate
headerdep.pl
headers_check.pl
headers_install.pl
headers.sh
kallsyms.c
Kbuild.include
kernel-doc
Lindent
Makefile x86, realmode: 16-bit real-mode code support for relocs tool 2012-05-18 19:49:40 -07:00
Makefile.asm-generic
Makefile.build
Makefile.clean
Makefile.fwinst
Makefile.headersinst
Makefile.help
Makefile.host
Makefile.lib
Makefile.modbuiltin
Makefile.modinst
Makefile.modpost
makelst
markup_oops.pl
mkcompile_h
mkmakefile
mksysmap
mkuboot.sh
mkversion
module-common.lds
namespace.pl
patch-kernel
pnmtologo.c
profile2linkerlist.pl
recordmcount.c
recordmcount.h
recordmcount.pl
setlocalversion
show_delta
tags.sh
unifdef.c
ver_linux
xz_wrap.sh