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Merge pull request #248 from spartacus06/debuginfo-support

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add debuginfo support
This commit is contained in:
Josh Poimboeuf 2014-06-17 22:34:20 -05:00
commit f4bba70412
2 changed files with 28 additions and 4 deletions
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28
kpatch-build/create-diff-object.c
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@ -1266,6 +1266,33 @@ void kpatch_regenerate_special_section(struct special_section *special,
sec->base->data->d_size = dest_offset;
}
void kpatch_include_debug_sections(struct kpatch_elf *kelf)
{
struct section *sec;
struct rela *rela, *saferela;
/* include all .debug_* sections */
list_for_each_entry(sec, &kelf->sections, list) {
if (!strncmp(sec->name, ".debug_", 7)) {
sec->include = 1;
if (sec->rela)
sec->rela->include = 1;
sec->secsym->include = 1;
}
}
/*
* Go through the .rela.debug_ sections and strip entries
* referencing unchanged symbols
*/
list_for_each_entry(sec, &kelf->sections, list) {
if (strncmp(sec->name, ".rela.debug_", 12))
continue;
list_for_each_entry_safe(rela, saferela, &sec->relas, list)
if (!rela->sym->sec->include)
list_del(&rela->list);
}
}
void kpatch_process_special_sections(struct kpatch_elf *kelf)
{
@ -2098,6 +2125,7 @@ int main(int argc, char *argv[])
kpatch_include_standard_elements(kelf_patched);
num_changed = kpatch_include_changed_functions(kelf_patched);
kpatch_include_debug_sections(kelf_patched);
kpatch_dump_kelf(kelf_patched);
kpatch_verify_patchability(kelf_patched);

4
kpatch-build/kpatch-build
View File

@ -43,7 +43,6 @@ ARCHVERSION="$(uname -r)"
CPUS="$(grep -c ^processor /proc/cpuinfo)"
CACHEDIR="$HOME/.kpatch"
TEMPDIR=
STRIPCMD="strip -d --keep-file-symbols"
APPLIEDPATCHFILE="applied-patch"
DEBUG=0
@ -356,7 +355,6 @@ cp "$OBJDIR/.config" "$OBJDIR2" || die
mkdir "$TEMPDIR/patched"
for i in $(cat $TEMPDIR/changed_objs); do
KCFLAGS="-ffunction-sections -fdata-sections" make "$i" "O=$OBJDIR2" >> "$LOGFILE" 2>&1 || die
$STRIPCMD "$OBJDIR2/$i" >> "$LOGFILE" 2>&1 || die
mkdir -p "$TEMPDIR/patched/$(dirname $i)"
cp -f "$OBJDIR2/$i" "$TEMPDIR/patched/$i" || die
done
@ -366,7 +364,6 @@ mkdir "$TEMPDIR/orig"
for i in $(cat $TEMPDIR/changed_objs); do
rm -f "$i"
KCFLAGS="-ffunction-sections -fdata-sections" make "$i" "O=$OBJDIR2" >> "$LOGFILE" 2>&1 || die
$STRIPCMD -d "$OBJDIR2/$i" >> "$LOGFILE" 2>&1 || die
mkdir -p "$TEMPDIR/orig/$(dirname $i)"
cp -f "$OBJDIR2/$i" "$TEMPDIR/orig/$i" || die
done
@ -404,7 +401,6 @@ cd "$TEMPDIR/output"
ld -r -o ../patch/output.o $FILES >> "$LOGFILE" 2>&1 || die
cd "$TEMPDIR/patch"
KPATCH_BUILD="$SRCDIR" KPATCH_NAME="$PATCHNAME" KBUILD_EXTRA_SYMBOLS="$SYMVERSFILE" make "O=$OBJDIR" >> "$LOGFILE" 2>&1 || die
$STRIPCMD "kpatch-$PATCHNAME.ko" >> "$LOGFILE" 2>&1 || die
cp -f "$TEMPDIR/patch/kpatch-$PATCHNAME.ko" "$BASE" || die