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| author | Doug Kwan <dougkwan@google.com> | 2010-06-25 00:37:40 +0000 |
|---|---|---|
| committer | Doug Kwan <dougkwan@google.com> | 2010-06-25 00:37:40 +0000 |
| commit | 8a75a161b2c2b23f87f986e186c18dc5e267753f (patch) | |
| tree | 5f127328523b3a278bdbc64f2cd66e14c42e5d36 /gold/target.h | |
| parent | 4f2a93bda27fb1c25aa5af9bd3cc6a30cda237cb (diff) | |
| download | gdb-8a75a161b2c2b23f87f986e186c18dc5e267753f.zip gdb-8a75a161b2c2b23f87f986e186c18dc5e267753f.tar.gz gdb-8a75a161b2c2b23f87f986e186c18dc5e267753f.tar.bz2 | |
2010-06-25 Doug Kwan <dougkwan@google.com>
* arm.cc (Target_arm::can_check_for_functions_pointers): Return true.
(Target_arm::section_may_have_icf_unsafe_pointers): New method
definition.
(Target_arm::Scan::local_reloc_may_be_function_pointer,
Target_arm::Scan::global_reloc_may_be_function_pointer): Implement
target hook to detect function points.
(Target_arm::Scan::possible_function_pointer_reloc): New method.
* icf.h (Icf::check_section_for_function_pointers): Change type of
parameter SECTION_NAME to const reference to std::string. Use
target hook to determine if section may have unsafe pointers.
* target.h (Target::section_may_have_icf_unsafe_pointers): New
method definition.
Diffstat (limited to 'gold/target.h')
| -rw-r--r-- | gold/target.h | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/gold/target.h b/gold/target.h index a0ec0b3..9f9c4f9 100644 --- a/gold/target.h +++ b/gold/target.h @@ -71,6 +71,20 @@ class Target can_check_for_function_pointers() const { return false; } + // Whether a section called SECTION_NAME may have function pointers to + // sections not eligible for safe ICF folding. + virtual bool + section_may_have_icf_unsafe_pointers(const char* section_name) const + { + // We recognize sections for normal vtables, construction vtables and + // EH frames. + return (!is_prefix_of(".rodata._ZTV", section_name) + && !is_prefix_of(".data.rel.ro._ZTV", section_name) + && !is_prefix_of(".rodata._ZTC", section_name) + && !is_prefix_of(".data.rel.ro._ZTC", section_name) + && !is_prefix_of(".eh_frame", section_name)); + } + // Return the bit size that this target implements. This should // return 32 or 64. int |