2009-11-25 Doug Kwan <dougkwan@google.com>
* arm.cc (Target_arm::Target_arm): Move method definition outside of class definition. Add code to handle --target1-rel, --target1-abs and --target2= options. (Target_arm::get_reloc_reloc_type): Change method to be non-static and const. (Target_arm::target1_is_rel_, Target_arm::target2_reloc_): New data member declaration. (Target_arm::Scan::local, Target_arm::Scan::global, Target_arm::Relocate::relocate, Target_arm::Relocatable_size_for_reloc::get_size_for_reloc): Adjust call to Target_arm::get_real_reloc_type. (Target_arm::get_real_reloc_type): Use command line options to determine real types of R_ARM_TARGET1 and R_ARM_TARGET2. * options.h (--target1-rel, --target1-abs, --target2): New ARM-only options.
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Doug Kwan
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5193828376
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50aeb7d431
@ -1,3 +1,21 @@
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2009-11-25 Doug Kwan <dougkwan@google.com>
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* arm.cc (Target_arm::Target_arm): Move method definition outside of
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class definition. Add code to handle --target1-rel, --target1-abs
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and --target2= options.
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(Target_arm::get_reloc_reloc_type): Change method to be non-static
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and const.
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(Target_arm::target1_is_rel_, Target_arm::target2_reloc_): New data
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member declaration.
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(Target_arm::Scan::local, Target_arm::Scan::global,
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Target_arm::Relocate::relocate,
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Target_arm::Relocatable_size_for_reloc::get_size_for_reloc): Adjust
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call to Target_arm::get_real_reloc_type.
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(Target_arm::get_real_reloc_type): Use command line options to
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determine real types of R_ARM_TARGET1 and R_ARM_TARGET2.
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* options.h (--target1-rel, --target1-abs, --target2): New ARM-only
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options.
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2009-11-25 Doug Kwan <dougkwan@google.com>
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* arm.cc (Target_arm::may_use_thumb2_nop): New method definition.
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81
gold/arm.cc
81
gold/arm.cc
@ -1142,14 +1142,7 @@ class Target_arm : public Sized_target<32, big_endian>
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// When were are relocating a stub, we pass this as the relocation number.
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static const size_t fake_relnum_for_stubs = static_cast<size_t>(-1);
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Target_arm()
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: Sized_target<32, big_endian>(&arm_info),
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got_(NULL), plt_(NULL), got_plt_(NULL), rel_dyn_(NULL),
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copy_relocs_(elfcpp::R_ARM_COPY), dynbss_(NULL), stub_tables_(),
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stub_factory_(Stub_factory::get_instance()),
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may_use_blx_(true), should_force_pic_veneer_(false),
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arm_input_section_map_()
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{ }
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Target_arm();
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// Whether we can use BLX.
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bool
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@ -1298,8 +1291,8 @@ class Target_arm : public Sized_target<32, big_endian>
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}
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// Map platform-specific reloc types
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static unsigned int
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get_real_reloc_type (unsigned int r_type);
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unsigned int
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get_real_reloc_type (unsigned int r_type) const;
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//
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// Methods to support stub-generations.
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@ -1631,6 +1624,11 @@ class Target_arm : public Sized_target<32, big_endian>
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Stub_table_list stub_tables_;
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// Stub factory.
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const Stub_factory &stub_factory_;
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// Whether R_ARM_TARGET1 maps to R_ARM_REL32 or R_ARM_ABS32.
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bool target1_is_rel_;
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// What R_ARM_TARGET2 maps to. It should be one of R_ARM_REL32, R_ARM_ABS32
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// and R_ARM_GOT_PREL.
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unsigned int target2_reloc_;
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// Whether we can use BLX.
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bool may_use_blx_;
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// Whether we force PIC branch veneers.
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@ -2310,6 +2308,51 @@ Arm_relocate_functions<big_endian>::arm_branch_common(
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? This::STATUS_OVERFLOW : This::STATUS_OKAY);
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}
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template<bool big_endian>
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Target_arm<big_endian>::Target_arm()
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: Sized_target<32, big_endian>(&arm_info),
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got_(NULL), plt_(NULL), got_plt_(NULL), rel_dyn_(NULL),
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copy_relocs_(elfcpp::R_ARM_COPY), dynbss_(NULL), stub_tables_(),
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stub_factory_(Stub_factory::get_instance()), target1_is_rel_(false),
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may_use_blx_(true), should_force_pic_veneer_(false),
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arm_input_section_map_()
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{
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// FIXME: This is not strictly compatible with ld, which allows both
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// --target1-abs and --target-rel to be given.
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if (parameters->options().user_set_target1_abs()
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&& parameters->options().user_set_target1_rel())
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{
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gold_error(_("Cannot use both --target1-abs and --target1-rel."));
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}
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else if (parameters->options().user_set_target1_rel())
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this->target1_is_rel_ = true;
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else if (parameters->options().user_set_target1_abs())
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this->target1_is_rel_ = false;
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if (parameters->options().user_set_target2())
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{
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if (strcmp(parameters->options().target2(), "rel") == 0)
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this->target2_reloc_ = elfcpp::R_ARM_REL32;
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else if (strcmp(parameters->options().target2(), "abs") == 0)
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this->target2_reloc_ = elfcpp::R_ARM_ABS32;
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else if (strcmp(parameters->options().target2(), "got-rel") == 0)
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this->target2_reloc_ = elfcpp::R_ARM_GOT_PREL;
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else
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gold_unreachable();
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}
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else
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{
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// Default values for R_ARM_TARGET2:
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//
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// R_ARM_REL32 (arm*-*-elf, arm*-*-eabi)
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// R_ARM_ABS32 (arm*-*-symbianelf)
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// R_ARM_GOT_PREL (arm*-*-linux, arm*-*-*bsd)
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// This is the default value for EABI.
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this->target2_reloc_ = elfcpp::R_ARM_REL32;
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}
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}
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// Relocate THUMB long branches. This handles relocation types
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// R_ARM_THM_CALL, R_ARM_THM_JUMP24 and R_ARM_THM_XPC22.
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// If IS_WEAK_UNDEFINED_WITH_PLT is true. The target symbol is weakly
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@ -4166,7 +4209,7 @@ Target_arm<big_endian>::Scan::local(Symbol_table* symtab,
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unsigned int r_type,
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const elfcpp::Sym<32, big_endian>&)
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{
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r_type = get_real_reloc_type(r_type);
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r_type = target->get_real_reloc_type(r_type);
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switch (r_type)
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{
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case elfcpp::R_ARM_NONE:
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@ -4293,7 +4336,7 @@ Target_arm<big_endian>::Scan::global(Symbol_table* symtab,
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unsigned int r_type,
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Symbol* gsym)
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{
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r_type = get_real_reloc_type(r_type);
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r_type = target->get_real_reloc_type(r_type);
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switch (r_type)
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{
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case elfcpp::R_ARM_NONE:
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@ -4705,7 +4748,7 @@ Target_arm<big_endian>::Relocate::relocate(
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{
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typedef Arm_relocate_functions<big_endian> Arm_relocate_functions;
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r_type = get_real_reloc_type(r_type);
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r_type = target->get_real_reloc_type(r_type);
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const Arm_relobj<big_endian>* object =
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Arm_relobj<big_endian>::as_arm_relobj(relinfo->object);
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@ -5170,7 +5213,9 @@ Target_arm<big_endian>::Relocatable_size_for_reloc::get_size_for_reloc(
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unsigned int r_type,
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Relobj* object)
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{
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r_type = get_real_reloc_type(r_type);
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const Target_arm<big_endian>* arm_target =
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Target_arm<big_endian>::default_target();
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r_type = arm_target->get_real_reloc_type(r_type);
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switch (r_type)
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{
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case elfcpp::R_ARM_NONE:
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@ -5315,17 +5360,15 @@ Target_arm<big_endian>::do_dynsym_value(const Symbol* gsym) const
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//
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template<bool big_endian>
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unsigned int
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Target_arm<big_endian>::get_real_reloc_type (unsigned int r_type)
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Target_arm<big_endian>::get_real_reloc_type (unsigned int r_type) const
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{
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switch (r_type)
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{
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case elfcpp::R_ARM_TARGET1:
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// This is either R_ARM_ABS32 or R_ARM_REL32;
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return elfcpp::R_ARM_ABS32;
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return this->target1_is_rel_? elfcpp::R_ARM_REL32 : elfcpp::R_ARM_ABS32;
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case elfcpp::R_ARM_TARGET2:
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// This can be any reloc type but ususally is R_ARM_GOT_PREL
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return elfcpp::R_ARM_GOT_PREL;
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return this->target2_reloc_;
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default:
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return r_type;
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@ -884,6 +884,17 @@ class General_options
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DEFINE_string(sysroot, options::TWO_DASHES, '\0', "",
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N_("Set target system root directory"), N_("DIR"));
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DEFINE_bool(target1_rel, options::TWO_DASHES, '\0', false,
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N_("(ARM only) Force R_ARM_TARGET1 type to R_ARM_REL32"),
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NULL);
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DEFINE_bool(target1_abs, options::TWO_DASHES, '\0', false,
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N_("(ARM only) Force R_ARM_TARGET1 type to R_ARM_ABS32"),
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NULL);
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DEFINE_enum(target2, options::TWO_DASHES, '\0', "default",
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N_("(ARM only) Set R_ARM_TARGET2 relocation type"),
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N_("[default, rel, abs, got-rel"),
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{"default", "rel", "abs", "got-rel"});
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DEFINE_bool(trace, options::TWO_DASHES, 't', false,
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N_("Print the name of each input file"), NULL);
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