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-rw-r--r--arch/x86/tools/relocs.c36
1 files changed, 27 insertions, 9 deletions
diff --git a/arch/x86/tools/relocs.c b/arch/x86/tools/relocs.c
index a5efb21d5228..0c2fae8d929d 100644
--- a/arch/x86/tools/relocs.c
+++ b/arch/x86/tools/relocs.c
@@ -20,7 +20,10 @@ struct relocs {
static struct relocs relocs16;
static struct relocs relocs32;
+#if ELF_BITS == 64
+static struct relocs relocs32neg;
static struct relocs relocs64;
+#endif
struct section {
Elf_Shdr shdr;
@@ -762,11 +765,16 @@ static int do_reloc64(struct section *sec, Elf_Rel *rel, ElfW(Sym) *sym,
switch (r_type) {
case R_X86_64_NONE:
+ /* NONE can be ignored. */
+ break;
+
case R_X86_64_PC32:
/*
- * NONE can be ignored and PC relative relocations don't
- * need to be adjusted.
+ * PC relative relocations don't need to be adjusted unless
+ * referencing a percpu symbol.
*/
+ if (is_percpu_sym(sym, symname))
+ add_reloc(&relocs32neg, offset);
break;
case R_X86_64_32:
@@ -986,7 +994,10 @@ static void emit_relocs(int as_text, int use_real_mode)
/* Order the relocations for more efficient processing */
sort_relocs(&relocs16);
sort_relocs(&relocs32);
+#if ELF_BITS == 64
+ sort_relocs(&relocs32neg);
sort_relocs(&relocs64);
+#endif
/* Print the relocations */
if (as_text) {
@@ -1007,14 +1018,21 @@ static void emit_relocs(int as_text, int use_real_mode)
for (i = 0; i < relocs32.count; i++)
write_reloc(relocs32.offset[i], stdout);
} else {
- if (ELF_BITS == 64) {
- /* Print a stop */
- write_reloc(0, stdout);
+#if ELF_BITS == 64
+ /* Print a stop */
+ write_reloc(0, stdout);
- /* Now print each relocation */
- for (i = 0; i < relocs64.count; i++)
- write_reloc(relocs64.offset[i], stdout);
- }
+ /* Now print each relocation */
+ for (i = 0; i < relocs64.count; i++)
+ write_reloc(relocs64.offset[i], stdout);
+
+ /* Print a stop */
+ write_reloc(0, stdout);
+
+ /* Now print each inverse 32-bit relocation */
+ for (i = 0; i < relocs32neg.count; i++)
+ write_reloc(relocs32neg.offset[i], stdout);
+#endif
/* Print a stop */
write_reloc(0, stdout);