aboutsummaryrefslogtreecommitdiff
path: root/Makefile
diff options
context:
space:
mode:
authorH. Peter Anvin <hpa@linux.intel.com>2012-05-08 21:22:24 +0300
committerH. Peter Anvin <hpa@linux.intel.com>2012-05-18 19:49:40 -0700
commit6520fe5564acf07ade7b18a1272db1184835c487 (patch)
tree363c95dea4c9202c2fbe1ebcfd9dd7b97c7422ac /Makefile
parent36be50515fe2aef61533b516fa2576a2c7fe7664 (diff)
downloadvexpress-lsk-6520fe5564acf07ade7b18a1272db1184835c487.tar.gz
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>
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile9
1 files changed, 6 insertions, 3 deletions
diff --git a/Makefile b/Makefile
index 48bd1f50dcc..db2bcf3d66b 100644
--- a/Makefile
+++ b/Makefile
@@ -442,7 +442,7 @@ asm-generic:
no-dot-config-targets := clean mrproper distclean \
cscope gtags TAGS tags help %docs check% coccicheck \
- include/linux/version.h headers_% archheaders \
+ include/linux/version.h headers_% archheaders archscripts \
kernelversion %src-pkg
config-targets := 0
@@ -979,7 +979,7 @@ prepare1: prepare2 include/linux/version.h include/generated/utsrelease.h \
include/config/auto.conf
$(cmd_crmodverdir)
-archprepare: archheaders prepare1 scripts_basic
+archprepare: archheaders archscripts prepare1 scripts_basic
prepare0: archprepare FORCE
$(Q)$(MAKE) $(build)=.
@@ -1049,8 +1049,11 @@ hdr-dst = $(if $(KBUILD_HEADERS), dst=include/asm-$(hdr-arch), dst=include/asm)
PHONY += archheaders
archheaders:
+PHONY += archscripts
+archscripts:
+
PHONY += __headers
-__headers: include/linux/version.h scripts_basic asm-generic archheaders FORCE
+__headers: include/linux/version.h scripts_basic asm-generic archheaders archscripts FORCE
$(Q)$(MAKE) $(build)=scripts build_unifdef
PHONY += headers_install_all