From 800d0f5656aeb62682bc0ea83f0c78486b812508 Mon Sep 17 00:00:00 2001 From: Ian Lance Taylor Date: Fri, 15 Jan 2010 15:41:42 +0000 Subject: [PATCH] * arm.cc (Arm_relocate_functions::thm_jump6): New function. (Arm_relocate_functions::thm_jump8): New function. (Arm_relocate_functions::thm_jump11): New function. (Target_arm::Scan::local): Handle R_ARM_THM_JUMP6, R_ARM_THM_JUMP8, R_ARM_THM_JUMP11. (Target_arm::Scan::global): Likewise. (Target_arm::Relocate::relocate): Likewise. (Target_arm::Relocatable_size_for_reloc::get_size_for_reloc): Likewise. --- gold/ChangeLog | 12 +++++++ gold/arm.cc | 87 ++++++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 99 insertions(+) diff --git a/gold/ChangeLog b/gold/ChangeLog index e00687160dd..0c6e1a02af3 100644 --- a/gold/ChangeLog +++ b/gold/ChangeLog @@ -1,3 +1,15 @@ +2010-01-15 Viktor Kutuzov + + * arm.cc (Arm_relocate_functions::thm_jump6): New function. + (Arm_relocate_functions::thm_jump8): New function. + (Arm_relocate_functions::thm_jump11): New function. + (Target_arm::Scan::local): Handle R_ARM_THM_JUMP6, R_ARM_THM_JUMP8, + R_ARM_THM_JUMP11. + (Target_arm::Scan::global): Likewise. + (Target_arm::Relocate::relocate): Likewise. + (Target_arm::Relocatable_size_for_reloc::get_size_for_reloc): + Likewise. + 2010-01-14 Doug Kwan * arm.cc (map, utility): Include headers. diff --git a/gold/arm.cc b/gold/arm.cc index cbac4a58682..1ab909e5e31 100644 --- a/gold/arm.cc +++ b/gold/arm.cc @@ -122,6 +122,9 @@ const int32_t THM2_MAX_BWD_BRANCH_OFFSET = (-(1 << 24) + 4); // R_ARM_MOVT_PREL // R_ARM_THM_MOVW_PREL_NC // R_ARM_THM_MOVT_PREL +// R_ARM_THM_JUMP6 +// R_ARM_THM_JUMP8 +// R_ARM_THM_JUMP11 // // TODOs: // - Support more relocation types as needed. @@ -2410,6 +2413,66 @@ class Arm_relocate_functions : public Relocate_functions<32, big_endian> is_weakly_undefined_without_plt); } + // R_ARM_THM_JUMP6: S + A – P + static inline typename This::Status + thm_jump6(unsigned char *view, + const Sized_relobj<32, big_endian>* object, + const Symbol_value<32>* psymval, + Arm_address address) + { + typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype; + typedef typename elfcpp::Swap<16, big_endian>::Valtype Reltype; + Valtype* wv = reinterpret_cast(view); + Valtype val = elfcpp::Swap<16, big_endian>::readval(wv); + // bit[9]:bit[7:3]:’0’ (mask: 0x02f8) + Reltype addend = (((val & 0x0200) >> 3) | ((val & 0x00f8) >> 2)); + Reltype x = (psymval->value(object, addend) - address); + val = (val & 0xfd07) | ((x & 0x0040) << 3) | ((val & 0x003e) << 2); + elfcpp::Swap<16, big_endian>::writeval(wv, val); + // CZB does only forward jumps. + return ((x > 0x007e) + ? This::STATUS_OVERFLOW + : This::STATUS_OKAY); + } + + // R_ARM_THM_JUMP8: S + A – P + static inline typename This::Status + thm_jump8(unsigned char *view, + const Sized_relobj<32, big_endian>* object, + const Symbol_value<32>* psymval, + Arm_address address) + { + typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype; + typedef typename elfcpp::Swap<16, big_endian>::Valtype Reltype; + Valtype* wv = reinterpret_cast(view); + Valtype val = elfcpp::Swap<16, big_endian>::readval(wv); + Reltype addend = utils::sign_extend<8>((val & 0x00ff) << 1); + Reltype x = (psymval->value(object, addend) - address); + elfcpp::Swap<16, big_endian>::writeval(wv, (val & 0xff00) | ((x & 0x01fe) >> 1)); + return (utils::has_overflow<8>(x) + ? This::STATUS_OVERFLOW + : This::STATUS_OKAY); + } + + // R_ARM_THM_JUMP11: S + A – P + static inline typename This::Status + thm_jump11(unsigned char *view, + const Sized_relobj<32, big_endian>* object, + const Symbol_value<32>* psymval, + Arm_address address) + { + typedef typename elfcpp::Swap<16, big_endian>::Valtype Valtype; + typedef typename elfcpp::Swap<16, big_endian>::Valtype Reltype; + Valtype* wv = reinterpret_cast(view); + Valtype val = elfcpp::Swap<16, big_endian>::readval(wv); + Reltype addend = utils::sign_extend<11>((val & 0x07ff) << 1); + Reltype x = (psymval->value(object, addend) - address); + elfcpp::Swap<16, big_endian>::writeval(wv, (val & 0xf800) | ((x & 0x0ffe) >> 1)); + return (utils::has_overflow<11>(x) + ? This::STATUS_OVERFLOW + : This::STATUS_OKAY); + } + // R_ARM_BASE_PREL: B(S) + A - P static inline typename This::Status base_prel(unsigned char* view, @@ -5138,6 +5201,9 @@ Target_arm::Scan::local(Symbol_table* symtab, 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_THM_JUMP6: + case elfcpp::R_ARM_THM_JUMP8: + case elfcpp::R_ARM_THM_JUMP11: break; case elfcpp::R_ARM_GOTOFF32: @@ -5266,6 +5332,9 @@ Target_arm::Scan::global(Symbol_table* symtab, 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_THM_JUMP6: + case elfcpp::R_ARM_THM_JUMP8: + case elfcpp::R_ARM_THM_JUMP11: break; case elfcpp::R_ARM_THM_ABS5: @@ -6001,6 +6070,21 @@ Target_arm::Relocate::relocate( thumb_bit); break; + case elfcpp::R_ARM_THM_JUMP6: + reloc_status = + Arm_relocate_functions::thm_jump6(view, object, psymval, address); + break; + + case elfcpp::R_ARM_THM_JUMP8: + reloc_status = + Arm_relocate_functions::thm_jump8(view, object, psymval, address); + break; + + case elfcpp::R_ARM_THM_JUMP11: + reloc_status = + Arm_relocate_functions::thm_jump11(view, object, psymval, address); + break; + case elfcpp::R_ARM_PREL31: reloc_status = Arm_relocate_functions::prel31(view, object, psymval, address, thumb_bit); @@ -6127,6 +6211,9 @@ Target_arm::Relocatable_size_for_reloc::get_size_for_reloc( 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: return 2; case elfcpp::R_ARM_ABS32: -- 2.30.2