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When creating a disassembler for one of the arm variants that can 

only execute thumb instructions, force the arch triple string to
be "thumbv..." instead of "armv..." so we do the right thing by
default when disassembling arbitrary chunks of code.
<rdar://problem/15126397> 

llvm-svn: 228486
This commit is contained in:
Jason Molenda 2015-02-07 06:03:49 +00:00
parent 2b56057517
commit 75452e8c5c
2 changed files with 19 additions and 1 deletions
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2
lldb/include/lldb/Core/Disassembler.h
View File

@ -457,7 +457,7 @@ protected:
//------------------------------------------------------------------
// Classes that inherit from Disassembler can see and modify these
//------------------------------------------------------------------
const ArchSpec m_arch;
ArchSpec m_arch;
InstructionList m_instruction_list;
lldb::addr_t m_base_addr;
std::string m_flavor;

18
lldb/source/Core/Disassembler.cpp
View File

@ -1172,6 +1172,24 @@ Disassembler::Disassembler(const ArchSpec& arch, const char *flavor) :
m_flavor.assign("default");
else
m_flavor.assign(flavor);
// If this is an arm variant that can only include thumb (T16, T32)
// instructions, force the arch triple to be "thumbv.." instead of
// "armv..."
if (arch.GetTriple().getArch() == llvm::Triple::arm
&& (arch.GetCore() == ArchSpec::Core::eCore_arm_armv7m
|| arch.GetCore() == ArchSpec::Core::eCore_arm_armv7em
|| arch.GetCore() == ArchSpec::Core::eCore_arm_armv6m))
{
std::string thumb_arch_name (arch.GetTriple().getArchName().str());
// Replace "arm" with "thumb" so we get all thumb variants correct
if (thumb_arch_name.size() > 3)
{
thumb_arch_name.erase(0, 3);
thumb_arch_name.insert(0, "thumb");
}
m_arch.SetTriple (thumb_arch_name.c_str());
}
}
//----------------------------------------------------------------------