[Xen-devel] [PATCH] libelf: move to init text/data when built for the hypervisor

["Jan Beulich" <JBeulich@xxxxxxxxxx>]

Rather than annotating each and every function and data object (and
then still missing some compiler generated ones, plus getting into
ugliness due to the code also being built from tools/libxc/), use
objcopy to rename all relevant sections.

Signed-off-by: Jan Beulich <jbeulich@xxxxxxxxxx>

--- a/xen/arch/ia64/xen/xen.lds.S
+++ b/xen/arch/ia64/xen/xen.lds.S
@@ -120,7 +120,13 @@ SECTIONS
        }
 
   .init.data : AT(ADDR(.init.data) - LOAD_OFFSET)
-       { *(.init.data) }
+       {
+         *(.init.rodata)
+         *(.init.rodata.str*)
+         *(.init.data)
+         *(.init.data.rel)
+         *(.init.data.rel.*)
+       }
 
   .init.ramfs : AT(ADDR(.init.ramfs) - LOAD_OFFSET)
        {
--- a/xen/arch/x86/xen.lds.S
+++ b/xen/arch/x86/xen.lds.S
@@ -79,7 +79,11 @@ SECTIONS
        _einittext = .;
   } :text
   .init.data : {
+       *(.init.rodata)
+       *(.init.rodata.str*)
        *(.init.data)
+       *(.init.data.rel)
+       *(.init.data.rel.*)
   } :text
   . = ALIGN(32);
   .init.setup : {
--- a/xen/common/libelf/Makefile
+++ b/xen/common/libelf/Makefile
@@ -1,4 +1,9 @@
-obj-y += libelf-tools.o
-obj-y += libelf-loader.o
-obj-y += libelf-dominfo.o
-#obj-y += libelf-relocate.o
+obj-y := libelf.o
+
+SECTIONS := text data rodata $(foreach n,1 2 4 8,rodata.str1.$(n)) $(foreach 
r,rel rel.ro,data.$(r) data.$(r).local)
+
+libelf.o: libelf-temp.o Makefile
+       $(OBJCOPY) $(foreach s,$(SECTIONS),--rename-section .$(s)=.init.$(s)) 
$< $@
+
+libelf-temp.o: libelf-tools.o libelf-loader.o libelf-dominfo.o 
#libelf-relocate.o
+       $(LD) $(LDFLAGS) -r -o $@ $^

libelf-init.patch
Description: Text document

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