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* powerpc.cc (Powerpc_relobj::add_gc_mark, process_gc_mark): New.

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(struct Opd_ent): Make "discard" a bit field.  Add "gc_mark".
	(Target_powerpc::do_gc_mark_symbol): Delay marking function code
	section if scan_opd_relocs not yet called.
	(Target_powerpc::gc_process_relocs): Call process_gc_mark.
This commit is contained in:
Alan Modra
2012-10-12 09:44:11 +00:00
parent 03e25981b6
commit c6de8ed456
2 changed files with 40 additions and 3 deletions
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8
gold/ChangeLog
View File

@ -1,3 +1,11 @@
2012-10-12 Alan Modra <amodra@gmail.com>
* powerpc.cc (Powerpc_relobj::add_gc_mark, process_gc_mark): New.
(struct Opd_ent): Make "discard" a bit field. Add "gc_mark".
(Target_powerpc::do_gc_mark_symbol): Delay marking function code
section if scan_opd_relocs not yet called.
(Target_powerpc::gc_process_relocs): Call process_gc_mark.
2012-10-12 Alan Modra <amodra@gmail.com> 2012-10-12 Alan Modra <amodra@gmail.com>
* powerpc.cc (Output_data_plt_powerpc::add_entry, add_ifunc_entry, * powerpc.cc (Output_data_plt_powerpc::add_entry, add_ifunc_entry,

35
gold/powerpc.cc
View File

@ -154,6 +154,28 @@ public:
this->access_from_map_[dst_off].insert(src_id); this->access_from_map_[dst_off].insert(src_id);
} }
// Add a reference to the code section specified by the .opd entry
// at DST_OFF
void
add_gc_mark(typename elfcpp::Elf_types<size>::Elf_Addr dst_off)
{
size_t ndx = this->opd_ent_ndx(dst_off);
if (ndx >= this->opd_ent_.size())
this->opd_ent_.resize(ndx + 1);
this->opd_ent_[ndx].gc_mark = true;
}
void
process_gc_mark(Symbol_table* symtab)
{
for (size_t i = 0; i < this->opd_ent_.size(); i++)
if (this->opd_ent_[i].gc_mark)
{
unsigned int shndx = this->opd_ent_[i].shndx;
symtab->gc()->worklist().push(Section_id(this, shndx));
}
}
bool bool
opd_valid() const opd_valid() const
{ return this->opd_valid_; } { return this->opd_valid_; }
@ -200,7 +222,8 @@ private:
struct Opd_ent struct Opd_ent
{ {
unsigned int shndx; unsigned int shndx;
bool discard; bool discard : 1;
bool gc_mark : 1;
Offset off; Offset off;
}; };
@ -3499,6 +3522,7 @@ Target_powerpc<size, big_endian>::gc_process_relocs(
p->second.clear(); p->second.clear();
} }
ppc_object->access_from_map()->clear(); ppc_object->access_from_map()->clear();
ppc_object->process_gc_mark(symtab);
// Don't look at .opd relocs as .opd will reference everything. // Don't look at .opd relocs as .opd will reference everything.
return; return;
} }
@ -3571,8 +3595,13 @@ Target_powerpc<size, big_endian>::do_gc_mark_symbol(
{ {
Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym); Sized_symbol<size>* gsym = symtab->get_sized_symbol<size>(sym);
Address dst_off = gsym->value(); Address dst_off = gsym->value();
unsigned int dst_indx = ppc_object->get_opd_ent(dst_off); if (ppc_object->opd_valid())
symtab->gc()->worklist().push(Section_id(ppc_object, dst_indx)); {
unsigned int dst_indx = ppc_object->get_opd_ent(dst_off);
symtab->gc()->worklist().push(Section_id(ppc_object, dst_indx));
}
else
ppc_object->add_gc_mark(dst_off);
} }
} }
} }