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create-diff-object: fix endianness in kpatch_no_sibling_calls_ppc64le() 

Otherwise it fails the unit tests on an s390 host.

Signed-off-by: Josh Poimboeuf <jpoimboe@redhat.com>
This commit is contained in:
Josh Poimboeuf 2022-05-12 06:25:32 -07:00
parent 017015a725
commit 52863dace0
1 changed files with 4 additions and 3 deletions
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7
kpatch-build/create-diff-object.c
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@ -3667,7 +3667,7 @@ static void kpatch_build_strings_section_data(struct kpatch_elf *kelf)
static void kpatch_no_sibling_calls_ppc64le(struct kpatch_elf *kelf)
{
struct symbol *sym;
unsigned int insn;
unsigned char *insn;
unsigned int offset;
if (kelf->arch != PPC64)
@ -3679,7 +3679,7 @@ static void kpatch_no_sibling_calls_ppc64le(struct kpatch_elf *kelf)
for (offset = 0; offset < sym->sec->data->d_size; offset += 4) {
insn = *(unsigned int *)(sym->sec->data->d_buf + offset);
insn = sym->sec->data->d_buf + offset;
/*
* The instruction 0x48000000 can be assumed to be a
@ -3694,7 +3694,8 @@ static void kpatch_no_sibling_calls_ppc64le(struct kpatch_elf *kelf)
* there's a REL24 relocation for the address which
* will be written by the linker or the kernel.
*/
if (insn != 0x48000000)
if (insn[3] != 0x48 || insn[2] != 0x00 ||
insn[1] != 0x00 || insn[0] != 0x00)
continue;
/* Make sure it's not a branch-to-self: */