[PATCH] arm64: Add support of R_AARCH64_PREL32 relocation in purgatory

[Pratyush Anand]

gcc version in fedora koji is 6.2.1-2.fc25. kexec-tools compiled with this
gcc produced another relocation error:

machine_apply_elf_rel: ERROR Unknown type: 261

This patch fixes the above error.

Signed-off-by: Pratyush Anand <***@redhat.com>
---
kexec/arch/arm64/kexec-arm64.c | 9 +++++++++
1 file changed, 9 insertions(+)

diff --git a/kexec/arch/arm64/kexec-arm64.c b/kexec/arch/arm64/kexec-arm64.c
index 218f0bc832cd..b12de4772412 100644
--- a/kexec/arch/arm64/kexec-arm64.c
+++ b/kexec/arch/arm64/kexec-arm64.c
@@ -720,6 +720,10 @@ void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *UNUSED(sym),
# define R_AARCH64_ABS64 257
#endif

+#if !defined(R_AARCH64_PREL32)
+# define R_AARCH64_PREL32 261
+#endif
+
#if !defined(R_AARCH64_LD_PREL_LO19)
# define R_AARCH64_LD_PREL_LO19 273
#endif
@@ -761,6 +765,11 @@ void machine_apply_elf_rel(struct mem_ehdr *ehdr, struct mem_sym *UNUSED(sym),
loc64 = ptr;
*loc64 = cpu_to_elf64(ehdr, elf64_to_cpu(ehdr, *loc64) + value);
break;
+ case R_AARCH64_PREL32:
+ type = "PREL32";
+ loc32 = ptr;
+ *loc32 = cpu_to_elf32(ehdr, elf32_to_cpu(ehdr, *loc32) + value - address);
+ break;
case R_AARCH64_LD_PREL_LO19:
type = "LD_PREL_LO19";
loc32 = ptr;

[Geoff Levand]

Post by Pratyush Anand
+ type = "PREL32";
+ loc32 = ptr;
+ *loc32 = cpu_to_elf32(ehdr, elf32_to_cpu(ehdr, *loc32) + value - address);

Please keep line width less than 80 chars.

Post by Pratyush Anand
+ break;