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| author | Renlin Li <renlin.li@arm.com> | 2018-02-03 13:18:17 +0000 |
|---|---|---|
| committer | Renlin Li <renlin.li@arm.com> | 2018-02-05 18:18:45 +0000 |
| commit | 279b2f94168ee91e02ccd070d27c983fc001fe12 (patch) | |
| tree | c8499a527ddaf07f478c7957080860ad6bedc990 /bfd/elfnn-aarch64.c | |
| parent | f3b91ed8f96a4d41eef1c64a7e77c406ec763612 (diff) | |
| download | gdb-279b2f94168ee91e02ccd070d27c983fc001fe12.zip gdb-279b2f94168ee91e02ccd070d27c983fc001fe12.tar.gz gdb-279b2f94168ee91e02ccd070d27c983fc001fe12.tar.bz2 | |
[PR22764][LD][AARCH64]Allow R_AARCH64_ABS16 and R_AARCH64_ABS32 against absolution symbol or undefine symbol in shared object.
The assumption that R_AARCH64_ABS16 and R_AARCH64_ABS32 relocation in LP64 abi
will be used to generate an address does not hold for absolute symbol.
In this case, it is a value fixed at static linking time.
The condition to check the relocations is relax to allow absolute symbol and
undefined symbol case.
bfd/
2018-02-05 Renlin Li <renlin.li@arm.com>
PR ld/22764
* elfnn-aarch64.c (elfNN_aarch64_check_relocs): Relax the
R_AARCH64_ABS32 and R_AARCH64_ABS16 for absolute symbol. Apply the
check for writeable section as well.
ld/
2018-02-05 Renlin Li <renlin.li@arm.com>
PR ld/22764
* testsuite/ld-aarch64/emit-relocs-258.s: Define symbol as an address.
* testsuite/ld-aarch64/emit-relocs-259.s: Likewise.
* testsuite/ld-aarch64/aarch64-elf.exp: Run new test.
* testsuite/ld-aarch64/pr22764.s: New.
* testsuite/ld-aarch64/pr22764.d: New.
Diffstat (limited to 'bfd/elfnn-aarch64.c')
| -rw-r--r-- | bfd/elfnn-aarch64.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/bfd/elfnn-aarch64.c b/bfd/elfnn-aarch64.c index af448f9..2737773 100644 --- a/bfd/elfnn-aarch64.c +++ b/bfd/elfnn-aarch64.c @@ -7189,10 +7189,19 @@ elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info, #if ARCH_SIZE == 64 case BFD_RELOC_AARCH64_32: #endif - if (bfd_link_pic (info) - && (sec->flags & SEC_ALLOC) != 0 - && (sec->flags & SEC_READONLY) != 0) + if (bfd_link_pic (info) && (sec->flags & SEC_ALLOC) != 0) { + if (h != NULL + /* This is an absolute symbol. It represents a value instead + of an address. */ + && ((h->root.type == bfd_link_hash_defined + && bfd_is_abs_section (h->root.u.def.section)) + /* This is an undefined symbol. */ + || h->root.type == bfd_link_hash_undefined)) + break; + + /* For local symbols, defined global symbols in a non-ABS section, + it is assumed that the value is an address. */ int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START; _bfd_error_handler /* xgettext:c-format */ |