diff options
Diffstat (limited to 'gold/script-sections.cc')
| -rw-r--r-- | gold/script-sections.cc | 65 |
1 files changed, 45 insertions, 20 deletions
diff --git a/gold/script-sections.cc b/gold/script-sections.cc index f35ecc1..ae81f89 100644 --- a/gold/script-sections.cc +++ b/gold/script-sections.cc @@ -329,6 +329,7 @@ class Orphan_section_placement PLACE_TLS, PLACE_TLS_BSS, PLACE_BSS, + PLACE_LAST_ALLOC, PLACE_REL, PLACE_INTERP, PLACE_NONALLOC, @@ -368,6 +369,7 @@ Orphan_section_placement::Orphan_section_placement() this->initialize_place(PLACE_TLS, NULL); this->initialize_place(PLACE_TLS_BSS, NULL); this->initialize_place(PLACE_BSS, ".bss"); + this->initialize_place(PLACE_LAST_ALLOC, NULL); this->initialize_place(PLACE_REL, NULL); this->initialize_place(PLACE_INTERP, ".interp"); this->initialize_place(PLACE_NONALLOC, NULL); @@ -396,6 +398,15 @@ Orphan_section_placement::output_section_init(const std::string& name, bool first_init = this->first_init_; this->first_init_ = false; + // Remember the last allocated section. Any orphan bss sections + // will be placed after it. + if (os != NULL + && (os->flags() & elfcpp::SHF_ALLOC) != 0) + { + this->places_[PLACE_LAST_ALLOC].location = location; + this->places_[PLACE_LAST_ALLOC].have_location = true; + } + for (int i = 0; i < PLACE_MAX; ++i) { if (this->places_[i].name != NULL && this->places_[i].name == name) @@ -509,7 +520,7 @@ Orphan_section_placement::find_place(Output_section* os, follow = PLACE_TEXT; break; case PLACE_BSS: - follow = PLACE_DATA; + follow = PLACE_LAST_ALLOC; break; case PLACE_REL: follow = PLACE_TEXT; @@ -1751,16 +1762,16 @@ Output_section_element_input::set_section_addresses( p != matching_sections[i].end(); ++p) { - // Override the original address alignment if SUBALIGN is specified - // and is greater than the original alignment. We need to make a - // copy of the input section to modify the alignment. + // Override the original address alignment if SUBALIGN is specified. + // We need to make a copy of the input section to modify the + // alignment. Output_section::Input_section sis(p->input_section()); uint64_t this_subalign = sis.addralign(); if (!sis.is_input_section()) sis.output_section_data()->finalize_data_size(); uint64_t data_size = sis.data_size(); - if (this_subalign < subalign) + if (subalign > 0) { this_subalign = subalign; sis.set_addralign(subalign); @@ -2463,6 +2474,35 @@ Output_section_definition::set_section_addresses(Symbol_table* symtab, this->output_section_->set_addralign(align); } + uint64_t subalign; + if (this->subalign_ == NULL) + subalign = 0; + else + { + Output_section* subalign_section; + subalign = this->subalign_->eval_with_dot(symtab, layout, true, + *dot_value, NULL, + &subalign_section, NULL, + false); + if (subalign_section != NULL) + gold_warning(_("subalign of section %s is not absolute"), + this->name_.c_str()); + + // Reserve a value of 0 to mean there is no SUBALIGN property. + if (subalign == 0) + subalign = 1; + + // The external alignment of the output section must be at least + // as large as that of the input sections. If there is no + // explicit ALIGN property, we set the output section alignment + // to match the input section alignment. + if (align < subalign || this->align_ == NULL) + { + align = subalign; + this->output_section_->set_addralign(align); + } + } + address = align_address(address, align); uint64_t start_address = address; @@ -2547,21 +2587,6 @@ Output_section_definition::set_section_addresses(Symbol_table* symtab, this->evaluated_load_address_ = laddr; - uint64_t subalign; - if (this->subalign_ == NULL) - subalign = 0; - else - { - Output_section* subalign_section; - subalign = this->subalign_->eval_with_dot(symtab, layout, true, - *dot_value, NULL, - &subalign_section, NULL, - false); - if (subalign_section != NULL) - gold_warning(_("subalign of section %s is not absolute"), - this->name_.c_str()); - } - std::string fill; if (this->fill_ != NULL) { |