In the most cases, the entry size of rodata is 8 bytes because the
relocation type is 64 bit, but when compling with Clang on LoongArch,
there exists 32 bit relocation type, the entry size of rodata should
be 4 bytes in this case.
This is preparation for later patch on LoongArch, there is no effect
for the other archs with this patch.
Signed-off-by: Tiezhu Yang <yangtiezhu@loongson.cn>
---
tools/objtool/check.c | 14 +++++++++++++-
1 file changed, 13 insertions(+), 1 deletion(-)
diff --git a/tools/objtool/check.c b/tools/objtool/check.c
index 191950551352..19d1263e64e4 100644
--- a/tools/objtool/check.c
+++ b/tools/objtool/check.c
@@ -26,6 +26,10 @@
#define EM_LOONGARCH 258
#endif
+#ifndef R_LARCH_32_PCREL
+#define R_LARCH_32_PCREL 99
+#endif
+
struct alternative {
struct alternative *next;
struct instruction *insn;
@@ -2096,6 +2100,7 @@ static int add_jump_table(struct objtool_file *file, struct instruction *insn,
struct reloc *reloc = table;
struct alternative *alt;
unsigned long offset;
+ unsigned long rodata_entry_size;
/*
* Each @reloc is a switch table relocation which points to the target
@@ -2107,8 +2112,15 @@ static int add_jump_table(struct objtool_file *file, struct instruction *insn,
if (reloc != table && reloc == next_table)
break;
+ /* Handle the special cases compiled with Clang on LoongArch */
+ if (file->elf->ehdr.e_machine == EM_LOONGARCH &&
+ reloc_type(reloc) == R_LARCH_32_PCREL)
+ rodata_entry_size = 4;
+ else
+ rodata_entry_size = 8;
+
/* Make sure the table entries are consecutive: */
- if (prev_offset && reloc_offset(reloc) != prev_offset + 8)
+ if (prev_offset && reloc_offset(reloc) != prev_offset + rodata_entry_size)
break;
if (reloc->sym->type == STT_SECTION) {
--
2.42.0