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| author | Jiong Wang <jiong.wang@arm.com> | 2017-01-20 13:30:32 +0000 |
|---|---|---|
| committer | Jiong Wang <jiong.wang@arm.com> | 2017-01-20 13:30:32 +0000 |
| commit | 7f784814df7067396e9c00b5cdc0eff9cd5c68de (patch) | |
| tree | 56139f5bfeca324ddefe8c90ad921cc617e8ef9c /bfd | |
| parent | add3afb219e755e13f4ec1c91aa59223df31a965 (diff) | |
| download | gdb-7f784814df7067396e9c00b5cdc0eff9cd5c68de.zip gdb-7f784814df7067396e9c00b5cdc0eff9cd5c68de.tar.gz gdb-7f784814df7067396e9c00b5cdc0eff9cd5c68de.tar.bz2 | |
[AArch64] Optimize .gnu.hash table size for executable
bfd/
* elfnn-aarch64.c (elf_aarch64_hash_symbol): New function.
(elf_backend_hash_symbol): Define.
ld/
* testsuite/ld-aarch64/aarch64-elf.exp (aarch64elflinktests): New tests.
* testsuite/ld-aarch64/func-in-so.s: New test source file.
* testsuite/ld-aarch64/func-sym-hash-opt.s: Likewise.
* testsuite/ld-aarch64/func-sym-hash-opt.d: New expected test result.
Diffstat (limited to 'bfd')
| -rw-r--r-- | bfd/ChangeLog | 5 | ||||
| -rw-r--r-- | bfd/elfnn-aarch64.c | 17 |
2 files changed, 22 insertions, 0 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index 624af08..f6841ef 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,3 +1,8 @@ +2017-01-20 Jiong Wang <jiong.wang@arm.com> + + * elfnn-aarch64.c (elf_aarch64_hash_symbol): New function. + (elf_backend_hash_symbol): Define. + 2017-01-18 Maciej W. Rozycki <macro@imgtec.com> PR ld/20828 diff --git a/bfd/elfnn-aarch64.c b/bfd/elfnn-aarch64.c index 6ea2d35..213cf55 100644 --- a/bfd/elfnn-aarch64.c +++ b/bfd/elfnn-aarch64.c @@ -2708,6 +2708,22 @@ elfNN_aarch64_stub_name (const asection *input_section, return stub_name; } +/* Return TRUE if symbol H should be hashed in the `.gnu.hash' section. For + executable PLT slots where the executable never takes the address of those + functions, the function symbols are not added to the hash table. */ + +static bfd_boolean +elf_aarch64_hash_symbol (struct elf_link_hash_entry *h) +{ + if (h->plt.offset != (bfd_vma) -1 + && !h->def_regular + && !h->pointer_equality_needed) + return FALSE; + + return _bfd_elf_hash_symbol (h); +} + + /* Look up an entry in the stub hash. Stub entries are cached because creating the stub name takes a bit of time. */ @@ -9412,6 +9428,7 @@ const struct elf_size_info elfNN_aarch64_size_info = #define elf_backend_got_header_size (GOT_ENTRY_SIZE * 3) #define elf_backend_default_execstack 0 #define elf_backend_extern_protected_data 1 +#define elf_backend_hash_symbol elf_aarch64_hash_symbol #undef elf_backend_obj_attrs_section #define elf_backend_obj_attrs_section ".ARM.attributes" |