binutils/binutils-aarch64-condbranch-relocs.patch

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2020-10-14 09:26:27 +00:00
diff -rup binutils.orig/bfd/elfnn-aarch64.c binutils-2.35/bfd/elfnn-aarch64.c
--- binutils.orig/bfd/elfnn-aarch64.c 2020-09-10 17:03:31.738458044 +0100
+++ binutils-2.35/bfd/elfnn-aarch64.c 2020-09-10 17:04:03.643344898 +0100
@@ -5445,7 +5445,6 @@ elfNN_aarch64_final_link_relocate (reloc
bfd_vma orig_value = value;
bfd_boolean resolved_to_zero;
bfd_boolean abs_symbol_p;
- bfd_boolean via_plt_p;
globals = elf_aarch64_hash_table (info);
@@ -5467,8 +5466,6 @@ elfNN_aarch64_final_link_relocate (reloc
: bfd_is_und_section (sym_sec));
abs_symbol_p = h != NULL && bfd_is_abs_symbol (&h->root);
- via_plt_p = (globals->root.splt != NULL && h != NULL
- && h->plt.offset != (bfd_vma) - 1);
/* Since STT_GNU_IFUNC symbol must go through PLT, we handle
it here if it is defined in a non-shared object. */
@@ -5805,23 +5802,12 @@ elfNN_aarch64_final_link_relocate (reloc
value += signed_addend;
break;
- case BFD_RELOC_AARCH64_BRANCH19:
- case BFD_RELOC_AARCH64_TSTBR14:
- /* A conditional branch to an undefined weak symbol is converted to a
- branch to itself. */
- if (weak_undef_p && !via_plt_p)
- {
- value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
- place, value,
- signed_addend,
- weak_undef_p);
- break;
- }
- /* Fall through. */
case BFD_RELOC_AARCH64_CALL26:
case BFD_RELOC_AARCH64_JUMP26:
{
asection *splt = globals->root.splt;
+ bfd_boolean via_plt_p =
+ splt != NULL && h != NULL && h->plt.offset != (bfd_vma) - 1;
/* A call to an undefined weak symbol is converted to a jump to
the next instruction unless a PLT entry will be created.
@@ -5902,6 +5888,23 @@ elfNN_aarch64_final_link_relocate (reloc
bfd_set_error (bfd_error_bad_value);
return bfd_reloc_notsupported;
}
+ value = _bfd_aarch64_elf_resolve_relocation (input_bfd, bfd_r_type,
+ place, value,
+ signed_addend,
+ weak_undef_p);
+ break;
+
+ case BFD_RELOC_AARCH64_BRANCH19:
+ case BFD_RELOC_AARCH64_TSTBR14:
+ if (h && h->root.type == bfd_link_hash_undefined)
+ {
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: conditional branch to undefined symbol `%s' "
+ "not allowed"), input_bfd, h->root.root.string);
+ bfd_set_error (bfd_error_bad_value);
+ return bfd_reloc_notsupported;
+ }
/* Fall through. */
case BFD_RELOC_AARCH64_16:
@@ -7967,8 +7970,6 @@ elfNN_aarch64_check_relocs (bfd *abfd, s
break;
}
- case BFD_RELOC_AARCH64_BRANCH19:
- case BFD_RELOC_AARCH64_TSTBR14:
case BFD_RELOC_AARCH64_CALL26:
case BFD_RELOC_AARCH64_JUMP26:
/* If this is a local symbol then we resolve it
Only in binutils-2.35/bfd: elfnn-aarch64.c.orig
diff -rup binutils.orig/ld/testsuite/ld-aarch64/emit-relocs-560.d binutils-2.35/ld/testsuite/ld-aarch64/emit-relocs-560.d
--- binutils.orig/ld/testsuite/ld-aarch64/emit-relocs-560.d 2020-09-10 17:03:31.067460424 +0100
+++ binutils-2.35/ld/testsuite/ld-aarch64/emit-relocs-560.d 2020-09-10 17:04:03.644344895 +0100
@@ -1,8 +1,3 @@
#source: emit-relocs-560.s
#ld: -shared
-#readelf: -r
-
-Relocation section '.rela.plt' at offset 0x[0-9a-f]+ contains 2 entries:
- Offset Info Type Sym. Value Sym. Name \+ Addend
-[0-9a-f]+ 000100000402 R_AARCH64_JUMP_SL 0000000000000000 baz \+ 0
-[0-9a-f]+ 000200000402 R_AARCH64_JUMP_SL 0000000000000000 bar \+ 0
+#error: .*: conditional branch to undefined symbol `bar' not allowed