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| author | Doug Kwan <dougkwan@google.com> | 2011-06-27 17:53:32 +0000 |
|---|---|---|
| committer | Doug Kwan <dougkwan@google.com> | 2011-06-27 17:53:32 +0000 |
| commit | 57eb9b5086fe082ad965e75d199dd9d536e54250 (patch) | |
| tree | 78d116aaf46e45d688a667fd1d8e874adf84be09 /gold/arm.cc | |
| parent | e26bd57dea76dd8d66e51f49b29a4d39edcd62b0 (diff) | |
| download | gdb-57eb9b5086fe082ad965e75d199dd9d536e54250.zip gdb-57eb9b5086fe082ad965e75d199dd9d536e54250.tar.gz gdb-57eb9b5086fe082ad965e75d199dd9d536e54250.tar.bz2 | |
2011-06-27 Doug Kwan <dougkwan@google.com>
* arm.cc (Arm_relocate_functions::thm_jump8,
Arm_relocate_functions::thm_jump11): Use a wider signed
type to compute offset.
* testsuite/Makefile.am: Add new tests arm_thm_jump11 and
arm_thm_jump8.
* testsuite/Makefile.in: Regenerate.
* testsuite/arm_branch_in_range.sh: Check test results of
arm_thm_jump11 and arm_thm_jump8.
* testsuite/arm_thm_jump11.s: New test source file.
* testsuite/arm_thm_jump11.t: New linker script.
* testsuite/arm_thm_jump8.s: New test source file.
* testsuite/arm_thm_jump8.t: New linker script.
Diffstat (limited to 'gold/arm.cc')
| -rw-r--r-- | gold/arm.cc | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/gold/arm.cc b/gold/arm.cc index 98e82b9..c8732e0 100644 --- a/gold/arm.cc +++ b/gold/arm.cc @@ -3356,13 +3356,14 @@ class Arm_relocate_functions : public Relocate_functions<32, big_endian> 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<Valtype*>(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) + int32_t addend = utils::sign_extend<8>((val & 0x00ff) << 1); + int32_t x = (psymval->value(object, addend) - address); + elfcpp::Swap<16, big_endian>::writeval(wv, ((val & 0xff00) + | ((x & 0x01fe) >> 1))); + // We do a 9-bit overflow check because x is right-shifted by 1 bit. + return (utils::has_overflow<9>(x) ? This::STATUS_OVERFLOW : This::STATUS_OKAY); } @@ -3375,13 +3376,14 @@ class Arm_relocate_functions : public Relocate_functions<32, big_endian> 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<Valtype*>(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) + int32_t addend = utils::sign_extend<11>((val & 0x07ff) << 1); + int32_t x = (psymval->value(object, addend) - address); + elfcpp::Swap<16, big_endian>::writeval(wv, ((val & 0xf800) + | ((x & 0x0ffe) >> 1))); + // We do a 12-bit overflow check because x is right-shifted by 1 bit. + return (utils::has_overflow<12>(x) ? This::STATUS_OVERFLOW : This::STATUS_OKAY); } |