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| author | Iain Sandoe <iain@codesourcery.com> | 2016-11-27 14:34:54 +0000 |
|---|---|---|
| committer | Iain Sandoe <iains@gcc.gnu.org> | 2016-11-27 14:34:54 +0000 |
| commit | 794fa8a6ab0a9fa4541e9528d7c6595299385e5f (patch) | |
| tree | a16565000a66d13d5da62d9140f1f324951ecbb7 /gcc/config/darwin-sections.def | |
| parent | eb89c82f46a10585c98e2019d775d920cf2fdea0 (diff) | |
| download | gcc-794fa8a6ab0a9fa4541e9528d7c6595299385e5f.zip gcc-794fa8a6ab0a9fa4541e9528d7c6595299385e5f.tar.gz gcc-794fa8a6ab0a9fa4541e9528d7c6595299385e5f.tar.bz2 | |
[Darwin] Fix PR71767 - adjust the sections used where necessary.
(much) Older Darwin linkers needed separate sections marked "coalesce" to
allow for weak symbol coalescing. This has not been needed for some time
and is now deprecated, newer assemblers warn if the old coalesced sections
are used.
gcc/
2016-11-27 Iain Sandoe <iain@codesourcery.com>
PR target/71767
* config/darwin-sections.def (picbase_thunk_section): New.
* config/darwin.c (darwin_init_sections): Set up picbase thunk
section. (darwin_rodata_section, darwin_objc2_section,
machopic_select_section, darwin_asm_declare_constant_name,
darwin_emit_weak_or_comdat, darwin_function_section): Don’t use
coalesced with newer linkers.
(darwin_override_options): Decide on usage of coalesed sections
on the basis of the target linker version.
* config/darwin.h (MIN_LD64_NO_COAL_SECTS): New.
* config/darwin.opt (mtarget-linker): New.
* config/i386/i386.c (ix86_code_end): Do not force the thunks into
a coalesced section, instead use a thunks section.
From-SVN: r242895
Diffstat (limited to 'gcc/config/darwin-sections.def')
| -rw-r--r-- | gcc/config/darwin-sections.def | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/gcc/config/darwin-sections.def b/gcc/config/darwin-sections.def index cbf3e41..8a7e985 100644 --- a/gcc/config/darwin-sections.def +++ b/gcc/config/darwin-sections.def @@ -31,6 +31,11 @@ along with GCC; see the file COPYING3. If not see DEF_SECTION (text_coal_section, SECTION_CODE|SECTION_NO_ANCHOR, ".section __TEXT,__textcoal_nt,coalesced,pure_instructions", 0) +/* We define a picbase thunks section separately, so that we can override the + def to be '.text' for versions of ld64 that handle coalescing. */ +DEF_SECTION (picbase_thunk_section, SECTION_CODE|SECTION_NO_ANCHOR, + ".section __TEXT,__textcoal_nt,coalesced,pure_instructions", 0) + DEF_SECTION (text_hot_section, SECTION_CODE, ".section __TEXT,__text_hot,regular,pure_instructions", 0) DEF_SECTION (text_cold_section, SECTION_CODE, |