diff options
Diffstat (limited to 'gold/powerpc.cc')
| -rw-r--r-- | gold/powerpc.cc | 210 |
1 files changed, 110 insertions, 100 deletions
diff --git a/gold/powerpc.cc b/gold/powerpc.cc index b443304..1bc9dfa 100644 --- a/gold/powerpc.cc +++ b/gold/powerpc.cc @@ -1,6 +1,6 @@ // powerpc.cc -- powerpc target support for gold. -// Copyright 2008, 2009, 2010, 2011 Free Software Foundation, Inc. +// Copyright 2008, 2009, 2010, 2011, 2012 Free Software Foundation, Inc. // Written by David S. Miller <davem@davemloft.net> // and David Edelsohn <edelsohn@gnu.org> @@ -62,20 +62,20 @@ class Target_powerpc : public Sized_target<size, big_endian> { } - // Process the relocations to determine unreferenced sections for + // Process the relocations to determine unreferenced sections for // garbage collection. void gc_process_relocs(Symbol_table* symtab, - Layout* layout, - Sized_relobj_file<size, big_endian>* object, - unsigned int data_shndx, - unsigned int sh_type, - const unsigned char* prelocs, - size_t reloc_count, - Output_section* output_section, - bool needs_special_offset_handling, - size_t local_symbol_count, - const unsigned char* plocal_symbols); + Layout* layout, + Sized_relobj_file<size, big_endian>* object, + unsigned int data_shndx, + unsigned int sh_type, + const unsigned char* prelocs, + size_t reloc_count, + Output_section* output_section, + bool needs_special_offset_handling, + size_t local_symbol_count, + const unsigned char* plocal_symbols); // Scan the relocations to look for symbol adjustments. void @@ -210,21 +210,21 @@ class Target_powerpc : public Sized_target<size, big_endian> inline bool local_reloc_may_be_function_pointer(Symbol_table* , Layout* , Target_powerpc* , - Sized_relobj_file<size, big_endian>* , - unsigned int , - Output_section* , - const elfcpp::Rela<size, big_endian>& , + Sized_relobj_file<size, big_endian>* , unsigned int , - const elfcpp::Sym<size, big_endian>&) + Output_section* , + const elfcpp::Rela<size, big_endian>& , + unsigned int , + const elfcpp::Sym<size, big_endian>&) { return false; } inline bool global_reloc_may_be_function_pointer(Symbol_table* , Layout* , Target_powerpc* , - Sized_relobj_file<size, big_endian>* , - unsigned int , - Output_section* , - const elfcpp::Rela<size, + Sized_relobj_file<size, big_endian>* , + unsigned int , + Output_section* , + const elfcpp::Rela<size, big_endian>& , unsigned int , Symbol*) { return false; } @@ -270,7 +270,7 @@ class Target_powerpc : public Sized_target<size, big_endian> inline void relocate_tls(const Relocate_info<size, big_endian>*, Target_powerpc* target, - size_t relnum, const elfcpp::Rela<size, big_endian>&, + size_t relnum, const elfcpp::Rela<size, big_endian>&, unsigned int r_type, const Sized_symbol<size>*, const Symbol_value<size>*, unsigned char*, @@ -330,7 +330,7 @@ class Target_powerpc : public Sized_target<size, big_endian> // Copy a relocation against a global symbol. void copy_reloc(Symbol_table* symtab, Layout* layout, - Sized_relobj_file<size, big_endian>* object, + Sized_relobj_file<size, big_endian>* object, unsigned int shndx, Output_section* output_section, Symbol* sym, const elfcpp::Rela<size, big_endian>& reloc) { @@ -389,6 +389,8 @@ Target::Target_info Target_powerpc<32, true>::powerpc_info = 0x10000000, // default_text_segment_address 64 * 1024, // abi_pagesize (overridable by -z max-page-size) 4 * 1024, // common_pagesize (overridable by -z common-page-size) + false, // isolate_execinstr + 0, // rosegment_gap elfcpp::SHN_UNDEF, // small_common_shndx elfcpp::SHN_UNDEF, // large_common_shndx 0, // small_common_section_flags @@ -413,6 +415,8 @@ Target::Target_info Target_powerpc<32, false>::powerpc_info = 0x10000000, // default_text_segment_address 64 * 1024, // abi_pagesize (overridable by -z max-page-size) 4 * 1024, // common_pagesize (overridable by -z common-page-size) + false, // isolate_execinstr + 0, // rosegment_gap elfcpp::SHN_UNDEF, // small_common_shndx elfcpp::SHN_UNDEF, // large_common_shndx 0, // small_common_section_flags @@ -437,6 +441,8 @@ Target::Target_info Target_powerpc<64, true>::powerpc_info = 0x10000000, // default_text_segment_address 64 * 1024, // abi_pagesize (overridable by -z max-page-size) 8 * 1024, // common_pagesize (overridable by -z common-page-size) + false, // isolate_execinstr + 0, // rosegment_gap elfcpp::SHN_UNDEF, // small_common_shndx elfcpp::SHN_UNDEF, // large_common_shndx 0, // small_common_section_flags @@ -461,6 +467,8 @@ Target::Target_info Target_powerpc<64, false>::powerpc_info = 0x10000000, // default_text_segment_address 64 * 1024, // abi_pagesize (overridable by -z max-page-size) 8 * 1024, // common_pagesize (overridable by -z common-page-size) + false, // isolate_execinstr + 0, // rosegment_gap elfcpp::SHN_UNDEF, // small_common_shndx elfcpp::SHN_UNDEF, // large_common_shndx 0, // small_common_section_flags @@ -952,7 +960,7 @@ static const unsigned int addis_r12_r2 = 0x3d820000; /* addis %r12,%r2,xxx@h static const unsigned int std_r2_40r1 = 0xf8410028; /* std %r2,40(%r1) */ static const unsigned int ld_r11_0r12 = 0xe96c0000; /* ld %r11,xxx+0@l(%r12) */ static const unsigned int ld_r2_0r12 = 0xe84c0000; /* ld %r2,xxx+8@l(%r12) */ - /* ld %r11,xxx+16@l(%r12) */ + /* ld %r11,xxx+16@l(%r12) */ // Write out the PLT. @@ -1311,27 +1319,27 @@ Target_powerpc<size, big_endian>::Scan::local( // executable), we need to create a dynamic relocation for // this location. if (parameters->options().output_is_position_independent()) - { - Reloc_section* rela_dyn = target->rela_dyn_section(layout); + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); check_non_pic(object, r_type); - if (lsym.get_st_type() != elfcpp::STT_SECTION) - { - unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); - rela_dyn->add_local(object, r_sym, r_type, output_section, + if (lsym.get_st_type() != elfcpp::STT_SECTION) + { + unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); + rela_dyn->add_local(object, r_sym, r_type, output_section, data_shndx, reloc.get_r_offset(), reloc.get_r_addend()); - } - else - { + } + else + { unsigned int r_sym = elfcpp::elf_r_sym<size>(reloc.get_r_info()); - gold_assert(lsym.get_st_value() == 0); - rela_dyn->add_local_relative(object, r_sym, r_type, + gold_assert(lsym.get_st_value() == 0); + rela_dyn->add_local_relative(object, r_sym, r_type, output_section, data_shndx, reloc.get_r_offset(), reloc.get_r_addend(), false); - } - } + } + } break; case elfcpp::R_POWERPC_REL24: @@ -1352,8 +1360,8 @@ Target_powerpc<size, big_endian>::Scan::local( case elfcpp::R_PPC64_TOC16_DS: case elfcpp::R_PPC64_TOC16_LO_DS: { - // The symbol requires a GOT entry. - Output_data_got<size, big_endian>* got; + // The symbol requires a GOT entry. + Output_data_got<size, big_endian>* got; unsigned int r_sym; got = target->got_section(symtab, layout); @@ -1374,7 +1382,7 @@ Target_powerpc<size, big_endian>::Scan::local( elfcpp::R_POWERPC_RELATIVE, got, off, 0, false); } - } + } else got->add_local(object, r_sym, GOT_TYPE_STANDARD); } @@ -1446,8 +1454,8 @@ Target_powerpc<size, big_endian>::Scan::global( // if the symbol is defined in the output file and is protected // or hidden. if (gsym->is_defined() - && !gsym->is_from_dynobj() - && !gsym->is_preemptible()) + && !gsym->is_from_dynobj() + && !gsym->is_preemptible()) break; target->make_plt_entry(symtab, layout, gsym); break; @@ -1459,38 +1467,38 @@ Target_powerpc<size, big_endian>::Scan::global( case elfcpp::R_POWERPC_ADDR32: case elfcpp::R_PPC64_ADDR64: { - // Make a PLT entry if necessary. - if (gsym->needs_plt_entry()) - { - target->make_plt_entry(symtab, layout, gsym); - // Since this is not a PC-relative relocation, we may be - // taking the address of a function. In that case we need to - // set the entry in the dynamic symbol table to the address of - // the PLT entry. - if (gsym->is_from_dynobj() && !parameters->options().shared()) - gsym->set_needs_dynsym_value(); - } - // Make a dynamic relocation if necessary. - if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type))) - { - if (gsym->may_need_copy_reloc()) - { - target->copy_reloc(symtab, layout, object, - data_shndx, output_section, gsym, reloc); - } - else if ((r_type == elfcpp::R_POWERPC_ADDR32 + // Make a PLT entry if necessary. + if (gsym->needs_plt_entry()) + { + target->make_plt_entry(symtab, layout, gsym); + // Since this is not a PC-relative relocation, we may be + // taking the address of a function. In that case we need to + // set the entry in the dynamic symbol table to the address of + // the PLT entry. + if (gsym->is_from_dynobj() && !parameters->options().shared()) + gsym->set_needs_dynsym_value(); + } + // Make a dynamic relocation if necessary. + if (gsym->needs_dynamic_reloc(Scan::get_reference_flags(r_type))) + { + if (gsym->may_need_copy_reloc()) + { + target->copy_reloc(symtab, layout, object, + data_shndx, output_section, gsym, reloc); + } + else if ((r_type == elfcpp::R_POWERPC_ADDR32 || r_type == elfcpp::R_PPC64_ADDR64) - && gsym->can_use_relative_reloc(false)) - { - Reloc_section* rela_dyn = target->rela_dyn_section(layout); - rela_dyn->add_global_relative(gsym, elfcpp::R_POWERPC_RELATIVE, + && gsym->can_use_relative_reloc(false)) + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + rela_dyn->add_global_relative(gsym, elfcpp::R_POWERPC_RELATIVE, output_section, object, data_shndx, reloc.get_r_offset(), reloc.get_r_addend(), false); - } - else - { - Reloc_section* rela_dyn = target->rela_dyn_section(layout); + } + else + { + Reloc_section* rela_dyn = target->rela_dyn_section(layout); check_non_pic(object, r_type); if (gsym->is_from_dynobj() @@ -1506,8 +1514,8 @@ Target_powerpc<size, big_endian>::Scan::global( data_shndx, reloc.get_r_offset(), reloc.get_r_addend(), false); - } - } + } + } } break; @@ -1552,31 +1560,31 @@ Target_powerpc<size, big_endian>::Scan::global( case elfcpp::R_PPC64_TOC16_DS: case elfcpp::R_PPC64_TOC16_LO_DS: { - // The symbol requires a GOT entry. - Output_data_got<size, big_endian>* got; + // The symbol requires a GOT entry. + Output_data_got<size, big_endian>* got; got = target->got_section(symtab, layout); - if (gsym->final_value_is_known()) - got->add_global(gsym, GOT_TYPE_STANDARD); - else - { - // If this symbol is not fully resolved, we need to add a - // dynamic relocation for it. - Reloc_section* rela_dyn = target->rela_dyn_section(layout); - if (gsym->is_from_dynobj() - || gsym->is_undefined() - || gsym->is_preemptible()) - got->add_global_with_rel(gsym, GOT_TYPE_STANDARD, rela_dyn, + if (gsym->final_value_is_known()) + got->add_global(gsym, GOT_TYPE_STANDARD); + else + { + // If this symbol is not fully resolved, we need to add a + // dynamic relocation for it. + Reloc_section* rela_dyn = target->rela_dyn_section(layout); + if (gsym->is_from_dynobj() + || gsym->is_undefined() + || gsym->is_preemptible()) + got->add_global_with_rel(gsym, GOT_TYPE_STANDARD, rela_dyn, elfcpp::R_POWERPC_GLOB_DAT); - else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) - { + else if (!gsym->has_got_offset(GOT_TYPE_STANDARD)) + { unsigned int off = got->add_constant(0); gsym->set_got_offset(GOT_TYPE_STANDARD, off); rela_dyn->add_global_relative(gsym, elfcpp::R_POWERPC_RELATIVE, got, off, 0, false); } - } + } } break; @@ -1788,20 +1796,20 @@ Target_powerpc<size, big_endian>::Relocate::relocate( case elfcpp::R_PPC64_GOT16_DS: case elfcpp::R_PPC64_GOT16_LO_DS: if (gsym != NULL) - { - gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); - got_offset = gsym->got_offset(GOT_TYPE_STANDARD); - } + { + gold_assert(gsym->has_got_offset(GOT_TYPE_STANDARD)); + got_offset = gsym->got_offset(GOT_TYPE_STANDARD); + } else - { - unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); - gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); - got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); - } + { + unsigned int r_sym = elfcpp::elf_r_sym<size>(rela.get_r_info()); + gold_assert(object->local_has_got_offset(r_sym, GOT_TYPE_STANDARD)); + got_offset = object->local_got_offset(r_sym, GOT_TYPE_STANDARD); + } break; // R_PPC_PLTREL24 is rather special. If non-zero, - // the addend specifies the GOT pointer offset within .got2. + // the addend specifies the GOT pointer offset within .got2. case elfcpp::R_PPC_PLTREL24: if (addend >= 32768) { @@ -2132,7 +2140,8 @@ public: : (big_endian ? "elf32ppc" : "elf32lppc"))) { } - Target* do_recognize(int machine, int, int) + virtual Target* + do_recognize(Input_file*, off_t, int machine, int, int) { switch (size) { @@ -2153,7 +2162,8 @@ public: return this->instantiate_target(); } - Target* do_instantiate_target() + virtual Target* + do_instantiate_target() { return new Target_powerpc<size, big_endian>(); } }; |