diff options
Diffstat (limited to 'gold')
| -rw-r--r-- | gold/ChangeLog | 45 | ||||
| -rw-r--r-- | gold/arm-reloc-property.cc | 43 | ||||
| -rw-r--r-- | gold/arm-reloc-property.h | 19 | ||||
| -rw-r--r-- | gold/arm-reloc.def | 8 | ||||
| -rw-r--r-- | gold/arm.cc | 656 |
5 files changed, 244 insertions, 527 deletions
diff --git a/gold/ChangeLog b/gold/ChangeLog index 59c1ba1..05cfc71 100644 --- a/gold/ChangeLog +++ b/gold/ChangeLog @@ -1,3 +1,48 @@ +2010-02-03 Doug Kwan <dougkwan@google.com> + + * arm-reloc-property.cc + (Arm_reloc_property_table::reloc_name_in_error_message): New method + definition. + * arm-reloc-property.h + (Arm_reloc_property_table::get_implemented_static_reloc_property): + New method definition. + (Arm_reloc_property_table::reloc_name_in_error_message): New method + declaration. + * arm-reloc.def (THM_MOVT_ABS, THM_MOVT_PREL, THM_MOVT_BREL): Change + overflow to N. + (GOT_PREL): Change implemented to Y. + * arm.cc (Target_arm::reloc_uses_thumb_bit): Remove method. + (Target_arm::Relocate::reloc_needs_sym_origin): Remove method. + (Arm_relocate_functions::movw_abs_nc): Remove method. + (Arm_relocate_functions::movt_abs): Ditto. + (Arm_relocate_functions::thm_movw_abs_nc): Ditto. + (Arm_relocate_functions::thm_movt_abs): Ditto. + (Arm_relocate_functions::movw_rel_nc): Ditto. + (Arm_relocate_functions::movw_rel): Ditto. + (Arm_relocate_functions::movt_rel): Ditto. + (Arm_relocate_functions:thm_movw_rel_nc): Ditto. + (Arm_relocate_functions:thm_movw_rel): Ditto. + (Arm_relocate_functions:thm_movt_rel): Ditto. + (Arm_relocate_functions::movw, Arm_relocate_functions::movt, + (Arm_relocate_functions::thm_movw, Arm_relocate_functions::thm_movt): + New method definitions. + (Arm_relocation_functions::arm_grp_alu): Add assertion for group index. + (Arm_relocation_functions::arm_grp_ldr): Ditto. + (Arm_relocation_functions::arm_grp_ldrs): Ditto. + (Arm_relocation_functions::arm_grp_ldc): Ditto. + (Target_arm::Relocate::relocate): Check for non-static or + unimplemented relocation code and exit early. Change calls to + Target_arm::reloc_uses_thumb_bit and + Target_arm::Reloc::reloc_needs_sym_origin to use relocation property + instead. Refactor code to handle similar relocations to increase + code sharing. Remove check for unsupported relocation code in switch + statement. + (Target_arm::Relocatable_size_for_reloc::get_size_for_reloc): Use + relocation property table to find out size. Change error message to + print out the name of a relocation code instead of the numeric value. + (Target_arm::scan_reloc_for_stub): Use relocation property table + instead of calling Target_arm::reloc_uses_thumb_bit(). + 2010-02-02 Doug Kwan <dougkwan@google.com> * arm.cc (Target_arm::relocate_section): Do view adjustment for all diff --git a/gold/arm-reloc-property.cc b/gold/arm-reloc-property.cc index ae93c47..ab37263 100644 --- a/gold/arm-reloc-property.cc +++ b/gold/arm-reloc-property.cc @@ -284,4 +284,47 @@ Arm_reloc_property_table::Arm_reloc_property_table() #undef RD } +// Return a string describing a relocation code that fails to get a +// relocation property in get_implemented_static_reloc_property(). + +std::string +Arm_reloc_property_table::reloc_name_in_error_message(unsigned int code) +{ + gold_assert(code < Property_table_size); + + const Arm_reloc_property* arp = this->table_[code]; + + if (arp == NULL) + { + char buffer[100]; + sprintf(buffer, _("invalid reloc %u"), code); + return std::string(buffer); + } + + // gold only implements static relocation codes. + Arm_reloc_property::Reloc_type reloc_type = arp->reloc_type(); + gold_assert(reloc_type == Arm_reloc_property::RT_STATIC + || !arp->is_implemented()); + + const char* prefix = NULL; + switch (reloc_type) + { + case Arm_reloc_property::RT_STATIC: + prefix = arp->is_implemented() ? _("reloc ") : _("unimplemented reloc "); + break; + case Arm_reloc_property::RT_DYNAMIC: + prefix = _("dynamic reloc "); + break; + case Arm_reloc_property::RT_PRIVATE: + prefix = _("private reloc "); + break; + case Arm_reloc_property::RT_OBSOLETE: + prefix = _("obsolete reloc "); + break; + default: + gold_unreachable(); + } + return std::string(prefix) + arp->name(); +} + } // End namespace gold. diff --git a/gold/arm-reloc-property.h b/gold/arm-reloc-property.h index 2d88211..349d862 100644 --- a/gold/arm-reloc-property.h +++ b/gold/arm-reloc-property.h @@ -293,6 +293,25 @@ class Arm_reloc_property_table return this->table_[code]; } + // Like get_reloc_property but only return non-NULL if relocation code is + // static and implemented. + const Arm_reloc_property* + get_implemented_static_reloc_property(unsigned int code) const + { + gold_assert(code < Property_table_size); + const Arm_reloc_property* arp = this->table_[code]; + return ((arp != NULL + && (arp->reloc_type() == Arm_reloc_property::RT_STATIC) + && arp->is_implemented()) + ? arp + : NULL); + } + + // Return a string describing the a relocation code that is not + // an implemented static reloc code. + std::string + reloc_name_in_error_message(unsigned int code); + private: // Copying is not allowed. Arm_reloc_property_table(const Arm_reloc_property_table&); diff --git a/gold/arm-reloc.def b/gold/arm-reloc.def index 6228839..39ec3d6 100644 --- a/gold/arm-reloc.def +++ b/gold/arm-reloc.def @@ -109,9 +109,9 @@ RD(MOVT_ABS , STATIC , N, ARM , S + A , Y, -1, Y) RD(MOVW_PREL_NC , STATIC , N, ARM , ((S + A) | T) - P , Y, -1, N) RD(MOVT_PREL , STATIC , N, ARM , (S + A) - P , Y, -1, Y) RD(THM_MOVW_ABS_NC , STATIC , N, THM32, (S + A) | T , Y, -1, N) -RD(THM_MOVT_ABS , STATIC , N, THM32, S + A , Y, -1, Y) +RD(THM_MOVT_ABS , STATIC , N, THM32, S + A , Y, -1, N) RD(THM_MOVW_PREL_NC , STATIC , N, THM32, ((S + A) | T) - P , Y, -1, N) -RD(THM_MOVT_PREL , STATIC , N, THM32, S + A - P , Y, -1, Y) +RD(THM_MOVT_PREL , STATIC , N, THM32, S + A - P , Y, -1, N) RD(THM_JUMP19 , STATIC , N, THM32, ((S + A) | T) - P , Y, -1, Y) RD(THM_JUMP6 , STATIC , N, THM16, S + A - P , Y, -1, Y) RD(THM_ALU_PREL_11_0 , STATIC , N, THM32, ((S + A) | T) - Pa , Y, -1, Y) @@ -149,7 +149,7 @@ RD(MOVW_BREL_NC , STATIC , N, ARM , ((S + A) | T) - B(S) , Y, -1, N) RD(MOVT_BREL , STATIC , N, ARM , S + A - B(S) , Y, -1, Y) RD(MOVW_BREL , STATIC , N, ARM , ((S + A) | T) - B(S) , Y, -1, Y) RD(THM_MOVW_BREL_NC , STATIC , N, THM32, ((S + A) | T) - B(S) , Y, -1, N) -RD(THM_MOVT_BREL , STATIC , N, THM32, S + A - B(S) , Y, -1, Y) +RD(THM_MOVT_BREL , STATIC , N, THM32, S + A - B(S) , Y, -1, N) RD(THM_MOVW_BREL , STATIC , N, THM32, ((S + A) | T) - B(S) , Y, -1, Y) RD(TLS_GOTDESC , STATIC , N, DATA , NONE , Y, -1, N) RD(TLS_CALL , STATIC , N, ARM , NONE , N, -1, Y) @@ -157,7 +157,7 @@ RD(TLS_DESCSEQ , STATIC , N, ARM , NONE , N, -1, Y) RD(THM_TLS_CALL , STATIC , N, THM32, NONE , N, -1, Y) RD(PLT32_ABS , STATIC , N, DATA , PLT(S) + A , N, -1, N) RD(GOT_ABS , STATIC , N, DATA , GOT(S) + A , N, -1, N) -RD(GOT_PREL , STATIC , N, DATA , GOT(S) + A - P , N, -1, N) +RD(GOT_PREL , STATIC , N, DATA , GOT(S) + A - P , Y, -1, N) RD(GOT_BREL12 , STATIC , N, ARM , GOT(S) + A - GOT_ORG , N, -1, Y) RD(GOTOFF12 , STATIC , N, ARM , S + A - GOT_ORG , N, -1, Y) RD(GOTRELAX , STATIC , N, MISC , NONE , N, -1, N) diff --git a/gold/arm.cc b/gold/arm.cc index 9c1c72e..3ffb0c1 100644 --- a/gold/arm.cc +++ b/gold/arm.cc @@ -2043,10 +2043,6 @@ class Target_arm : public Sized_target<32, big_endian> parameters->sized_target<32, big_endian>()); } - // Whether relocation type uses LSB to distinguish THUMB addresses. - static bool - reloc_uses_thumb_bit(unsigned int r_type); - // Whether NAME belongs to a mapping symbol. static bool is_mapping_symbol_name(const char* name) @@ -2259,47 +2255,6 @@ class Target_arm : public Sized_target<32, big_endian> return true; } } - - // Return whether we need to calculate the addressing origin of - // the output segment defining the symbol - B(S). - static bool - reloc_needs_sym_origin(unsigned int r_type) - { - switch (r_type) - { - case elfcpp::R_ARM_SBREL32: - case elfcpp::R_ARM_BASE_PREL: - case elfcpp::R_ARM_BASE_ABS: - case elfcpp::R_ARM_LDR_SBREL_11_0_NC: - case elfcpp::R_ARM_ALU_SBREL_19_12_NC: - case elfcpp::R_ARM_ALU_SBREL_27_20_CK: - case elfcpp::R_ARM_SBREL31: - case elfcpp::R_ARM_ALU_SB_G0_NC: - case elfcpp::R_ARM_ALU_SB_G0: - case elfcpp::R_ARM_ALU_SB_G1_NC: - case elfcpp::R_ARM_ALU_SB_G1: - case elfcpp::R_ARM_ALU_SB_G2: - case elfcpp::R_ARM_LDR_SB_G0: - case elfcpp::R_ARM_LDR_SB_G1: - case elfcpp::R_ARM_LDR_SB_G2: - case elfcpp::R_ARM_LDRS_SB_G0: - case elfcpp::R_ARM_LDRS_SB_G1: - case elfcpp::R_ARM_LDRS_SB_G2: - case elfcpp::R_ARM_LDC_SB_G0: - case elfcpp::R_ARM_LDC_SB_G1: - case elfcpp::R_ARM_LDC_SB_G2: - case elfcpp::R_ARM_MOVW_BREL_NC: - case elfcpp::R_ARM_MOVT_BREL: - case elfcpp::R_ARM_MOVW_BREL: - case elfcpp::R_ARM_THM_MOVW_BREL_NC: - case elfcpp::R_ARM_THM_MOVT_BREL: - case elfcpp::R_ARM_THM_MOVW_BREL: - return true; - - default: - return false; - } - } }; // A class which returns the size required for a relocation type, @@ -2999,163 +2954,62 @@ class Arm_relocate_functions : public Relocate_functions<32, big_endian> This::STATUS_OVERFLOW : This::STATUS_OKAY); } - // R_ARM_MOVW_ABS_NC: (S + A) | T - static inline typename This::Status - movw_abs_nc(unsigned char *view, - const Sized_relobj<32, big_endian>* object, - const Symbol_value<32>* psymval, - Arm_address thumb_bit) - { - typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; - Valtype* wv = reinterpret_cast<Valtype*>(view); - Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); - Valtype addend = This::extract_arm_movw_movt_addend(val); - Valtype x = psymval->value(object, addend) | thumb_bit; - val = This::insert_val_arm_movw_movt(val, x); - elfcpp::Swap<32, big_endian>::writeval(wv, val); - return This::STATUS_OKAY; - } - - // R_ARM_MOVT_ABS: S + A - static inline typename This::Status - movt_abs(unsigned char *view, - const Sized_relobj<32, big_endian>* object, - const Symbol_value<32>* psymval) - { - typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; - Valtype* wv = reinterpret_cast<Valtype*>(view); - Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); - Valtype addend = This::extract_arm_movw_movt_addend(val); - Valtype x = psymval->value(object, addend) >> 16; - val = This::insert_val_arm_movw_movt(val, x); - elfcpp::Swap<32, big_endian>::writeval(wv, val); - return This::STATUS_OKAY; - } - - // R_ARM_THM_MOVW_ABS_NC: S + A | T - static inline typename This::Status - thm_movw_abs_nc(unsigned char *view, - const Sized_relobj<32, big_endian>* object, - const Symbol_value<32>* psymval, - Arm_address thumb_bit) - { - typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype; - typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype; - Valtype* wv = reinterpret_cast<Valtype*>(view); - Reltype val = ((elfcpp::Swap<16, big_endian>::readval(wv) << 16) - | elfcpp::Swap<16, big_endian>::readval(wv + 1)); - Reltype addend = extract_thumb_movw_movt_addend(val); - Reltype x = psymval->value(object, addend) | thumb_bit; - val = This::insert_val_thumb_movw_movt(val, x); - elfcpp::Swap<16, big_endian>::writeval(wv, val >> 16); - elfcpp::Swap<16, big_endian>::writeval(wv + 1, val & 0xffff); - return This::STATUS_OKAY; - } - - // R_ARM_THM_MOVT_ABS: S + A - static inline typename This::Status - thm_movt_abs(unsigned char *view, - const Sized_relobj<32, big_endian>* object, - const Symbol_value<32>* psymval) - { - typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype; - typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype; - Valtype* wv = reinterpret_cast<Valtype*>(view); - Reltype val = ((elfcpp::Swap<16, big_endian>::readval(wv) << 16) - | elfcpp::Swap<16, big_endian>::readval(wv + 1)); - Reltype addend = This::extract_thumb_movw_movt_addend(val); - Reltype x = psymval->value(object, addend) >> 16; - val = This::insert_val_thumb_movw_movt(val, x); - elfcpp::Swap<16, big_endian>::writeval(wv, val >> 16); - elfcpp::Swap<16, big_endian>::writeval(wv + 1, val & 0xffff); - return This::STATUS_OKAY; - } - + // R_ARM_MOVW_ABS_NC: (S + A) | T (relative address base is ) // R_ARM_MOVW_PREL_NC: (S + A) | T - P - // R_ARM_MOVW_BREL_NC: ((S + A) | T) – B(S) - static inline typename This::Status - movw_rel_nc(unsigned char* view, - const Sized_relobj<32, big_endian>* object, - const Symbol_value<32>* psymval, - Arm_address address, - Arm_address thumb_bit) - { - typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; - Valtype* wv = reinterpret_cast<Valtype*>(view); - Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); - Valtype addend = This::extract_arm_movw_movt_addend(val); - Valtype x = (psymval->value(object, addend) | thumb_bit) - address; - val = This::insert_val_arm_movw_movt(val, x); - elfcpp::Swap<32, big_endian>::writeval(wv, val); - return This::STATUS_OKAY; - } - - // R_ARM_MOVW_BREL: ((S + A) | T) – B(S) + // R_ARM_MOVW_BREL_NC: ((S + A) | T) - B(S) + // R_ARM_MOVW_BREL: ((S + A) | T) - B(S) static inline typename This::Status - movw_rel(unsigned char* view, - const Sized_relobj<32, big_endian>* object, - const Symbol_value<32>* psymval, - Arm_address address, - Arm_address thumb_bit) + movw(unsigned char* view, + const Sized_relobj<32, big_endian>* object, + const Symbol_value<32>* psymval, + Arm_address relative_address_base, + Arm_address thumb_bit, + bool check_overflow) { typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; Valtype* wv = reinterpret_cast<Valtype*>(view); Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); Valtype addend = This::extract_arm_movw_movt_addend(val); - Valtype x = (psymval->value(object, addend) | thumb_bit) - address; + Valtype x = ((psymval->value(object, addend) | thumb_bit) + - relative_address_base); val = This::insert_val_arm_movw_movt(val, x); elfcpp::Swap<32, big_endian>::writeval(wv, val); - return ((x >= 0x10000) ? - This::STATUS_OVERFLOW : This::STATUS_OKAY); + return ((check_overflow && utils::has_overflow<16>(x)) + ? This::STATUS_OVERFLOW + : This::STATUS_OKAY); } + // R_ARM_MOVT_ABS: S + A (relative address base is 0) // R_ARM_MOVT_PREL: S + A - P - // R_ARM_MOVT_BREL: S + A – B(S) + // R_ARM_MOVT_BREL: S + A - B(S) static inline typename This::Status - movt_rel(unsigned char* view, - const Sized_relobj<32, big_endian>* object, - const Symbol_value<32>* psymval, - Arm_address address) + movt(unsigned char* view, + const Sized_relobj<32, big_endian>* object, + const Symbol_value<32>* psymval, + Arm_address relative_address_base) { typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; Valtype* wv = reinterpret_cast<Valtype*>(view); Valtype val = elfcpp::Swap<32, big_endian>::readval(wv); Valtype addend = This::extract_arm_movw_movt_addend(val); - Valtype x = (psymval->value(object, addend) - address) >> 16; + Valtype x = (psymval->value(object, addend) - relative_address_base) >> 16; val = This::insert_val_arm_movw_movt(val, x); elfcpp::Swap<32, big_endian>::writeval(wv, val); + // FIXME: IHI0044D says that we should check for overflow. return This::STATUS_OKAY; } + // R_ARM_THM_MOVW_ABS_NC: S + A | T (relative_address_base is 0) // R_ARM_THM_MOVW_PREL_NC: (S + A) | T - P - // R_ARM_THM_MOVW_BREL_NC: ((S + A) | T) – B(S) - static inline typename This::Status - thm_movw_rel_nc(unsigned char *view, - const Sized_relobj<32, big_endian>* object, - const Symbol_value<32>* psymval, - Arm_address address, - Arm_address thumb_bit) - { - typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype; - typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype; - Valtype* wv = reinterpret_cast<Valtype*>(view); - Reltype val = (elfcpp::Swap<16, big_endian>::readval(wv) << 16) - | elfcpp::Swap<16, big_endian>::readval(wv + 1); - Reltype addend = This::extract_thumb_movw_movt_addend(val); - Reltype x = (psymval->value(object, addend) | thumb_bit) - address; - val = This::insert_val_thumb_movw_movt(val, x); - elfcpp::Swap<16, big_endian>::writeval(wv, val >> 16); - elfcpp::Swap<16, big_endian>::writeval(wv + 1, val & 0xffff); - return This::STATUS_OKAY; - } - - // R_ARM_THM_MOVW_BREL: ((S + A) | T) – B(S) + // R_ARM_THM_MOVW_BREL_NC: ((S + A) | T) - B(S) + // R_ARM_THM_MOVW_BREL: ((S + A) | T) - B(S) static inline typename This::Status - thm_movw_rel(unsigned char *view, - const Sized_relobj<32, big_endian>* object, - const Symbol_value<32>* psymval, - Arm_address address, - Arm_address thumb_bit) + thm_movw(unsigned char *view, + const Sized_relobj<32, big_endian>* object, + const Symbol_value<32>* psymval, + Arm_address relative_address_base, + Arm_address thumb_bit, + bool check_overflow) { typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype; typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype; @@ -3163,21 +3017,24 @@ class Arm_relocate_functions : public Relocate_functions<32, big_endian> Reltype val = (elfcpp::Swap<16, big_endian>::readval(wv) << 16) | elfcpp::Swap<16, big_endian>::readval(wv + 1); Reltype addend = This::extract_thumb_movw_movt_addend(val); - Reltype x = (psymval->value(object, addend) | thumb_bit) - address; + Reltype x = + (psymval->value(object, addend) | thumb_bit) - relative_address_base; val = This::insert_val_thumb_movw_movt(val, x); elfcpp::Swap<16, big_endian>::writeval(wv, val >> 16); elfcpp::Swap<16, big_endian>::writeval(wv + 1, val & 0xffff); - return ((x >= 0x10000) ? - This::STATUS_OVERFLOW : This::STATUS_OKAY); + return ((check_overflow && utils::has_overflow<16>(x)) + ? This::STATUS_OVERFLOW + : This::STATUS_OKAY); } + // R_ARM_THM_MOVT_ABS: S + A (relative address base is 0) // R_ARM_THM_MOVT_PREL: S + A - P - // R_ARM_THM_MOVT_BREL: S + A – B(S) + // R_ARM_THM_MOVT_BREL: S + A - B(S) static inline typename This::Status - thm_movt_rel(unsigned char* view, - const Sized_relobj<32, big_endian>* object, - const Symbol_value<32>* psymval, - Arm_address address) + thm_movt(unsigned char* view, + const Sized_relobj<32, big_endian>* object, + const Symbol_value<32>* psymval, + Arm_address relative_address_base) { typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype; typedef typename elfcpp::Swap<32, big_endian>::Valtype Reltype; @@ -3185,7 +3042,7 @@ class Arm_relocate_functions : public Relocate_functions<32, big_endian> Reltype val = (elfcpp::Swap<16, big_endian>::readval(wv) << 16) | elfcpp::Swap<16, big_endian>::readval(wv + 1); Reltype addend = This::extract_thumb_movw_movt_addend(val); - Reltype x = (psymval->value(object, addend) - address) >> 16; + Reltype x = (psymval->value(object, addend) - relative_address_base) >> 16; val = This::insert_val_thumb_movw_movt(val, x); elfcpp::Swap<16, big_endian>::writeval(wv, val >> 16); elfcpp::Swap<16, big_endian>::writeval(wv + 1, val & 0xffff); @@ -3363,6 +3220,7 @@ class Arm_relocate_functions : public Relocate_functions<32, big_endian> Arm_address thumb_bit, bool check_overflow) { + gold_assert(group >= 0 && group < 3); typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; Valtype* wv = reinterpret_cast<Valtype*>(view); Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); @@ -3417,6 +3275,7 @@ class Arm_relocate_functions : public Relocate_functions<32, big_endian> const int group, Arm_address address) { + gold_assert(group >= 0 && group < 3); typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; Valtype* wv = reinterpret_cast<Valtype*>(view); Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); @@ -3454,6 +3313,7 @@ class Arm_relocate_functions : public Relocate_functions<32, big_endian> const int group, Arm_address address) { + gold_assert(group >= 0 && group < 3); typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; Valtype* wv = reinterpret_cast<Valtype*>(view); Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); @@ -3491,6 +3351,7 @@ class Arm_relocate_functions : public Relocate_functions<32, big_endian> const int group, Arm_address address) { + gold_assert(group >= 0 && group < 3); typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; Valtype* wv = reinterpret_cast<Valtype*>(view); Valtype insn = elfcpp::Swap<32, big_endian>::readval(wv); @@ -7286,6 +7147,17 @@ Target_arm<big_endian>::Relocate::relocate( typedef Arm_relocate_functions<big_endian> Arm_relocate_functions; r_type = get_real_reloc_type(r_type); + const Arm_reloc_property* reloc_property = + arm_reloc_property_table->get_implemented_static_reloc_property(r_type); + if (reloc_property == NULL) + { + std::string reloc_name = + arm_reloc_property_table->reloc_name_in_error_message(r_type); + gold_error_at_location(relinfo, relnum, rel.get_r_offset(), + _("cannot relocate %s in object file"), + reloc_name.c_str()); + return true; + } const Arm_relobj<big_endian>* object = Arm_relobj<big_endian>::as_arm_relobj(relinfo->object); @@ -7348,7 +7220,7 @@ Target_arm<big_endian>::Relocate::relocate( // Strip LSB if this points to a THUMB target. if (thumb_bit != 0 - && Target_arm<big_endian>::reloc_uses_thumb_bit(r_type) + && reloc_property->uses_thumb_bit() && ((psymval->value(object, 0) & 1) != 0)) { Arm_address stripped_value = @@ -7394,7 +7266,7 @@ Target_arm<big_endian>::Relocate::relocate( // Get the addressing origin of the output segment defining the // symbol gsym if needed (AAELF 4.6.1.2 Relocation types). Arm_address sym_origin = 0; - if (Relocate::reloc_needs_sym_origin(r_type)) + if (reloc_property->uses_symbol_base()) { if (r_type == elfcpp::R_ARM_BASE_ABS && gsym == NULL) // R_ARM_BASE_ABS with the NULL symbol will give the @@ -7413,8 +7285,31 @@ Target_arm<big_endian>::Relocate::relocate( // will be implemented. This is consistent with GNU ld. } + // For relative addressing relocation, find out the relative address base. + Arm_address relative_address_base = 0; + switch(reloc_property->relative_address_base()) + { + case Arm_reloc_property::RAB_NONE: + break; + case Arm_reloc_property::RAB_B_S: + relative_address_base = sym_origin; + break; + case Arm_reloc_property::RAB_GOT_ORG: + relative_address_base = target->got_plt_section()->address(); + break; + case Arm_reloc_property::RAB_P: + relative_address_base = address; + break; + case Arm_reloc_property::RAB_Pa: + relative_address_base = address & 0xfffffffcU; + break; + default: + gold_unreachable(); + } + typename Arm_relocate_functions::Status reloc_status = Arm_relocate_functions::STATUS_OKAY; + bool check_overflow = reloc_property->checks_overflow(); switch (r_type) { case elfcpp::R_ARM_NONE: @@ -7456,9 +7351,9 @@ Target_arm<big_endian>::Relocate::relocate( case elfcpp::R_ARM_MOVW_ABS_NC: if (should_apply_static_reloc(gsym, Symbol::ABSOLUTE_REF, true, output_section)) - reloc_status = Arm_relocate_functions::movw_abs_nc(view, object, - psymval, - thumb_bit); + reloc_status = Arm_relocate_functions::movw(view, object, psymval, + 0, thumb_bit, + check_overflow); else gold_error(_("relocation R_ARM_MOVW_ABS_NC cannot be used when making" "a shared object; recompile with -fPIC")); @@ -7467,7 +7362,7 @@ Target_arm<big_endian>::Relocate::relocate( case elfcpp::R_ARM_MOVT_ABS: if (should_apply_static_reloc(gsym, Symbol::ABSOLUTE_REF, true, output_section)) - reloc_status = Arm_relocate_functions::movt_abs(view, object, psymval); + reloc_status = Arm_relocate_functions::movt(view, object, psymval, 0); else gold_error(_("relocation R_ARM_MOVT_ABS cannot be used when making" "a shared object; recompile with -fPIC")); @@ -7476,9 +7371,8 @@ Target_arm<big_endian>::Relocate::relocate( case elfcpp::R_ARM_THM_MOVW_ABS_NC: if (should_apply_static_reloc(gsym, Symbol::ABSOLUTE_REF, true, output_section)) - reloc_status = Arm_relocate_functions::thm_movw_abs_nc(view, object, - psymval, - thumb_bit); + reloc_status = Arm_relocate_functions::thm_movw(view, object, psymval, + 0, thumb_bit, false); else gold_error(_("relocation R_ARM_THM_MOVW_ABS_NC cannot be used when" "making a shared object; recompile with -fPIC")); @@ -7487,70 +7381,45 @@ Target_arm<big_endian>::Relocate::relocate( case elfcpp::R_ARM_THM_MOVT_ABS: if (should_apply_static_reloc(gsym, Symbol::ABSOLUTE_REF, true, output_section)) - reloc_status = Arm_relocate_functions::thm_movt_abs(view, object, - psymval); + reloc_status = Arm_relocate_functions::thm_movt(view, object, + psymval, 0); else gold_error(_("relocation R_ARM_THM_MOVT_ABS cannot be used when" "making a shared object; recompile with -fPIC")); break; case elfcpp::R_ARM_MOVW_PREL_NC: - reloc_status = Arm_relocate_functions::movw_rel_nc(view, object, - psymval, address, - thumb_bit); - break; - case elfcpp::R_ARM_MOVW_BREL_NC: - reloc_status = Arm_relocate_functions::movw_rel_nc(view, object, - psymval, sym_origin, - thumb_bit); - break; - case elfcpp::R_ARM_MOVW_BREL: - reloc_status = Arm_relocate_functions::movw_rel(view, object, - psymval, sym_origin, - thumb_bit); + reloc_status = + Arm_relocate_functions::movw(view, object, psymval, + relative_address_base, thumb_bit, + check_overflow); break; case elfcpp::R_ARM_MOVT_PREL: - reloc_status = Arm_relocate_functions::movt_rel(view, object, - psymval, address); - break; - case elfcpp::R_ARM_MOVT_BREL: - reloc_status = Arm_relocate_functions::movt_rel(view, object, - psymval, sym_origin); + reloc_status = + Arm_relocate_functions::movt(view, object, psymval, + relative_address_base); break; case elfcpp::R_ARM_THM_MOVW_PREL_NC: - reloc_status = Arm_relocate_functions::thm_movw_rel_nc(view, object, - psymval, address, - thumb_bit); - break; - case elfcpp::R_ARM_THM_MOVW_BREL_NC: - reloc_status = Arm_relocate_functions::thm_movw_rel_nc(view, object, - psymval, - sym_origin, - thumb_bit); - break; - case elfcpp::R_ARM_THM_MOVW_BREL: - reloc_status = Arm_relocate_functions::thm_movw_rel(view, object, - psymval, sym_origin, - thumb_bit); + reloc_status = + Arm_relocate_functions::thm_movw(view, object, psymval, + relative_address_base, + thumb_bit, check_overflow); break; case elfcpp::R_ARM_THM_MOVT_PREL: - reloc_status = Arm_relocate_functions::thm_movt_rel(view, object, - psymval, address); - break; - case elfcpp::R_ARM_THM_MOVT_BREL: - reloc_status = Arm_relocate_functions::thm_movt_rel(view, object, - psymval, sym_origin); + reloc_status = + Arm_relocate_functions::thm_movt(view, object, psymval, + relative_address_base); break; - + case elfcpp::R_ARM_REL32: reloc_status = Arm_relocate_functions::rel32(view, object, psymval, address, thumb_bit); @@ -7684,192 +7553,60 @@ Target_arm<big_endian>::Relocate::relocate( break; case elfcpp::R_ARM_ALU_PC_G0_NC: - reloc_status = - Arm_relocate_functions::arm_grp_alu(view, object, psymval, 0, - address, thumb_bit, false); - break; - case elfcpp::R_ARM_ALU_PC_G0: - reloc_status = - Arm_relocate_functions::arm_grp_alu(view, object, psymval, 0, - address, thumb_bit, true); - break; - case elfcpp::R_ARM_ALU_PC_G1_NC: - reloc_status = - Arm_relocate_functions::arm_grp_alu(view, object, psymval, 1, - address, thumb_bit, false); - break; - case elfcpp::R_ARM_ALU_PC_G1: - reloc_status = - Arm_relocate_functions::arm_grp_alu(view, object, psymval, 1, - address, thumb_bit, true); - break; - case elfcpp::R_ARM_ALU_PC_G2: - reloc_status = - Arm_relocate_functions::arm_grp_alu(view, object, psymval, 2, - address, thumb_bit, true); - break; - case elfcpp::R_ARM_ALU_SB_G0_NC: - reloc_status = - Arm_relocate_functions::arm_grp_alu(view, object, psymval, 0, - sym_origin, thumb_bit, false); - break; - case elfcpp::R_ARM_ALU_SB_G0: - reloc_status = - Arm_relocate_functions::arm_grp_alu(view, object, psymval, 0, - sym_origin, thumb_bit, true); - break; - case elfcpp::R_ARM_ALU_SB_G1_NC: - reloc_status = - Arm_relocate_functions::arm_grp_alu(view, object, psymval, 1, - sym_origin, thumb_bit, false); - break; - case elfcpp::R_ARM_ALU_SB_G1: - reloc_status = - Arm_relocate_functions::arm_grp_alu(view, object, psymval, 1, - sym_origin, thumb_bit, true); - break; - case elfcpp::R_ARM_ALU_SB_G2: reloc_status = - Arm_relocate_functions::arm_grp_alu(view, object, psymval, 2, - sym_origin, thumb_bit, true); + Arm_relocate_functions::arm_grp_alu(view, object, psymval, + reloc_property->group_index(), + relative_address_base, + thumb_bit, check_overflow); break; case elfcpp::R_ARM_LDR_PC_G0: - reloc_status = - Arm_relocate_functions::arm_grp_ldr(view, object, psymval, 0, - address); - break; - case elfcpp::R_ARM_LDR_PC_G1: - reloc_status = - Arm_relocate_functions::arm_grp_ldr(view, object, psymval, 1, - address); - break; - case elfcpp::R_ARM_LDR_PC_G2: - reloc_status = - Arm_relocate_functions::arm_grp_ldr(view, object, psymval, 2, - address); - break; - case elfcpp::R_ARM_LDR_SB_G0: - reloc_status = - Arm_relocate_functions::arm_grp_ldr(view, object, psymval, 0, - sym_origin); - break; - case elfcpp::R_ARM_LDR_SB_G1: - reloc_status = - Arm_relocate_functions::arm_grp_ldr(view, object, psymval, 1, - sym_origin); - break; - case elfcpp::R_ARM_LDR_SB_G2: reloc_status = - Arm_relocate_functions::arm_grp_ldr(view, object, psymval, 2, - sym_origin); + Arm_relocate_functions::arm_grp_ldr(view, object, psymval, + reloc_property->group_index(), + relative_address_base); break; case elfcpp::R_ARM_LDRS_PC_G0: - reloc_status = - Arm_relocate_functions::arm_grp_ldrs(view, object, psymval, 0, - address); - break; - case elfcpp::R_ARM_LDRS_PC_G1: - reloc_status = - Arm_relocate_functions::arm_grp_ldrs(view, object, psymval, 1, - address); - break; - case elfcpp::R_ARM_LDRS_PC_G2: - reloc_status = - Arm_relocate_functions::arm_grp_ldrs(view, object, psymval, 2, - address); - break; - case elfcpp::R_ARM_LDRS_SB_G0: - reloc_status = - Arm_relocate_functions::arm_grp_ldrs(view, object, psymval, 0, - sym_origin); - break; - case elfcpp::R_ARM_LDRS_SB_G1: - reloc_status = - Arm_relocate_functions::arm_grp_ldrs(view, object, psymval, 1, - sym_origin); - break; - case elfcpp::R_ARM_LDRS_SB_G2: reloc_status = - Arm_relocate_functions::arm_grp_ldrs(view, object, psymval, 2, - sym_origin); + Arm_relocate_functions::arm_grp_ldrs(view, object, psymval, + reloc_property->group_index(), + relative_address_base); break; case elfcpp::R_ARM_LDC_PC_G0: - reloc_status = - Arm_relocate_functions::arm_grp_ldc(view, object, psymval, 0, - address); - break; - case elfcpp::R_ARM_LDC_PC_G1: - reloc_status = - Arm_relocate_functions::arm_grp_ldc(view, object, psymval, 1, - address); - break; - case elfcpp::R_ARM_LDC_PC_G2: - reloc_status = - Arm_relocate_functions::arm_grp_ldc(view, object, psymval, 2, - address); - break; - case elfcpp::R_ARM_LDC_SB_G0: - reloc_status = - Arm_relocate_functions::arm_grp_ldc(view, object, psymval, 0, - sym_origin); - break; - case elfcpp::R_ARM_LDC_SB_G1: - reloc_status = - Arm_relocate_functions::arm_grp_ldc(view, object, psymval, 1, - sym_origin); - break; - case elfcpp::R_ARM_LDC_SB_G2: reloc_status = - Arm_relocate_functions::arm_grp_ldc(view, object, psymval, 2, - sym_origin); - break; - - case elfcpp::R_ARM_TARGET1: - // This should have been mapped to another type already. - // Fall through. - case elfcpp::R_ARM_COPY: - case elfcpp::R_ARM_GLOB_DAT: - case elfcpp::R_ARM_JUMP_SLOT: - case elfcpp::R_ARM_RELATIVE: - // These are relocations which should only be seen by the - // dynamic linker, and should never be seen here. - gold_error_at_location(relinfo, relnum, rel.get_r_offset(), - _("unexpected reloc %u in object file"), - r_type); + Arm_relocate_functions::arm_grp_ldc(view, object, psymval, + reloc_property->group_index(), + relative_address_base); break; default: - gold_error_at_location(relinfo, relnum, rel.get_r_offset(), - _("unsupported reloc %u"), - r_type); - break; + gold_unreachable(); } // Report any errors. @@ -7963,98 +7700,16 @@ Target_arm<big_endian>::Relocatable_size_for_reloc::get_size_for_reloc( Relobj* object) { r_type = get_real_reloc_type(r_type); - switch (r_type) + const Arm_reloc_property* arp = + arm_reloc_property_table->get_implemented_static_reloc_property(r_type); + if (arp != NULL) + return arp->size(); + else { - case elfcpp::R_ARM_NONE: - return 0; - - case elfcpp::R_ARM_ABS8: - return 1; - - case elfcpp::R_ARM_ABS16: - case elfcpp::R_ARM_THM_ABS5: - case elfcpp::R_ARM_THM_JUMP6: - case elfcpp::R_ARM_THM_JUMP8: - case elfcpp::R_ARM_THM_JUMP11: - case elfcpp::R_ARM_THM_PC8: - return 2; - - case elfcpp::R_ARM_ABS32: - case elfcpp::R_ARM_ABS32_NOI: - case elfcpp::R_ARM_ABS12: - case elfcpp::R_ARM_BASE_ABS: - case elfcpp::R_ARM_REL32: - case elfcpp::R_ARM_THM_CALL: - case elfcpp::R_ARM_GOTOFF32: - case elfcpp::R_ARM_BASE_PREL: - case elfcpp::R_ARM_GOT_BREL: - case elfcpp::R_ARM_GOT_PREL: - case elfcpp::R_ARM_PLT32: - case elfcpp::R_ARM_CALL: - case elfcpp::R_ARM_JUMP24: - case elfcpp::R_ARM_PREL31: - case elfcpp::R_ARM_MOVW_ABS_NC: - case elfcpp::R_ARM_MOVT_ABS: - case elfcpp::R_ARM_THM_MOVW_ABS_NC: - case elfcpp::R_ARM_THM_MOVT_ABS: - case elfcpp::R_ARM_MOVW_PREL_NC: - case elfcpp::R_ARM_MOVT_PREL: - case elfcpp::R_ARM_THM_MOVW_PREL_NC: - case elfcpp::R_ARM_THM_MOVT_PREL: - case elfcpp::R_ARM_MOVW_BREL_NC: - case elfcpp::R_ARM_MOVT_BREL: - case elfcpp::R_ARM_MOVW_BREL: - case elfcpp::R_ARM_THM_MOVW_BREL_NC: - case elfcpp::R_ARM_THM_MOVT_BREL: - case elfcpp::R_ARM_THM_MOVW_BREL: - case elfcpp::R_ARM_V4BX: - case elfcpp::R_ARM_THM_PC12: - case elfcpp::R_ARM_THM_ALU_PREL_11_0: - case elfcpp::R_ARM_ALU_PC_G0_NC: - case elfcpp::R_ARM_ALU_PC_G0: - case elfcpp::R_ARM_ALU_PC_G1_NC: - case elfcpp::R_ARM_ALU_PC_G1: - case elfcpp::R_ARM_ALU_PC_G2: - case elfcpp::R_ARM_ALU_SB_G0_NC: - case elfcpp::R_ARM_ALU_SB_G0: - case elfcpp::R_ARM_ALU_SB_G1_NC: - case elfcpp::R_ARM_ALU_SB_G1: - case elfcpp::R_ARM_ALU_SB_G2: - case elfcpp::R_ARM_LDR_PC_G0: - case elfcpp::R_ARM_LDR_PC_G1: - case elfcpp::R_ARM_LDR_PC_G2: - case elfcpp::R_ARM_LDR_SB_G0: - case elfcpp::R_ARM_LDR_SB_G1: - case elfcpp::R_ARM_LDR_SB_G2: - case elfcpp::R_ARM_LDRS_PC_G0: - case elfcpp::R_ARM_LDRS_PC_G1: - case elfcpp::R_ARM_LDRS_PC_G2: - case elfcpp::R_ARM_LDRS_SB_G0: - case elfcpp::R_ARM_LDRS_SB_G1: - case elfcpp::R_ARM_LDRS_SB_G2: - case elfcpp::R_ARM_LDC_PC_G0: - case elfcpp::R_ARM_LDC_PC_G1: - case elfcpp::R_ARM_LDC_PC_G2: - case elfcpp::R_ARM_LDC_SB_G0: - case elfcpp::R_ARM_LDC_SB_G1: - case elfcpp::R_ARM_LDC_SB_G2: - return 4; - - case elfcpp::R_ARM_TARGET1: - // This should have been mapped to another type already. - // Fall through. - case elfcpp::R_ARM_COPY: - case elfcpp::R_ARM_GLOB_DAT: - case elfcpp::R_ARM_JUMP_SLOT: - case elfcpp::R_ARM_RELATIVE: - // These are relocations which should only be seen by the - // dynamic linker, and should never be seen here. - gold_error(_("%s: unexpected reloc %u in object file"), - object->name().c_str(), r_type); - return 0; - - default: - object->error(_("unsupported reloc %u in object file"), r_type); + std::string reloc_name = + arm_reloc_property_table->reloc_name_in_error_message(r_type); + gold_error(_("%s: unexpected %s in object file"), + object->name().c_str(), reloc_name.c_str()); return 0; } } @@ -9057,54 +8712,6 @@ Target_arm<big_endian>::merge_object_attributes( } } -// Return whether a relocation type used the LSB to distinguish THUMB -// addresses. -template<bool big_endian> -bool -Target_arm<big_endian>::reloc_uses_thumb_bit(unsigned int r_type) -{ - switch (r_type) - { - case elfcpp::R_ARM_PC24: - case elfcpp::R_ARM_ABS32: - case elfcpp::R_ARM_REL32: - case elfcpp::R_ARM_SBREL32: - case elfcpp::R_ARM_THM_CALL: - case elfcpp::R_ARM_GLOB_DAT: - case elfcpp::R_ARM_JUMP_SLOT: - case elfcpp::R_ARM_GOTOFF32: - case elfcpp::R_ARM_PLT32: - case elfcpp::R_ARM_CALL: - case elfcpp::R_ARM_JUMP24: - case elfcpp::R_ARM_THM_JUMP24: - case elfcpp::R_ARM_SBREL31: - case elfcpp::R_ARM_PREL31: - case elfcpp::R_ARM_MOVW_ABS_NC: - case elfcpp::R_ARM_MOVW_PREL_NC: - case elfcpp::R_ARM_THM_MOVW_ABS_NC: - case elfcpp::R_ARM_THM_MOVW_PREL_NC: - case elfcpp::R_ARM_THM_JUMP19: - case elfcpp::R_ARM_THM_ALU_PREL_11_0: - case elfcpp::R_ARM_ALU_PC_G0_NC: - case elfcpp::R_ARM_ALU_PC_G0: - case elfcpp::R_ARM_ALU_PC_G1_NC: - case elfcpp::R_ARM_ALU_PC_G1: - case elfcpp::R_ARM_ALU_PC_G2: - case elfcpp::R_ARM_ALU_SB_G0_NC: - case elfcpp::R_ARM_ALU_SB_G0: - case elfcpp::R_ARM_ALU_SB_G1_NC: - case elfcpp::R_ARM_ALU_SB_G1: - case elfcpp::R_ARM_ALU_SB_G2: - case elfcpp::R_ARM_MOVW_BREL_NC: - case elfcpp::R_ARM_MOVW_BREL: - case elfcpp::R_ARM_THM_MOVW_BREL_NC: - case elfcpp::R_ARM_THM_MOVW_BREL: - return true; - default: - return false; - } -} - // Stub-generation methods for Target_arm. // Make a new Arm_input_section object. @@ -9239,8 +8846,11 @@ Target_arm<big_endian>::scan_reloc_for_stub( } // Strip LSB if this points to a THUMB target. + const Arm_reloc_property* reloc_property = + arm_reloc_property_table->get_implemented_static_reloc_property(r_type); + gold_assert(reloc_property != NULL); if (target_is_thumb - && Target_arm<big_endian>::reloc_uses_thumb_bit(r_type) + && reloc_property->uses_thumb_bit() && ((psymval->value(arm_relobj, 0) & 1) != 0)) { Arm_address stripped_value = |