diff options
Diffstat (limited to 'source/Target/ABI.cpp')
| -rw-r--r-- | source/Target/ABI.cpp | 52 |
1 files changed, 35 insertions, 17 deletions
diff --git a/source/Target/ABI.cpp b/source/Target/ABI.cpp index 4d67cb46abe4..f5fd594877f1 100644 --- a/source/Target/ABI.cpp +++ b/source/Target/ABI.cpp @@ -7,6 +7,10 @@ // //===----------------------------------------------------------------------===// +// C Includes +// C++ Includes +// Other libraries and framework includes +// Project includes #include "lldb/Target/ABI.h" #include "lldb/Core/PluginManager.h" #include "lldb/Core/Value.h" @@ -27,7 +31,7 @@ ABI::FindPlugin (const ArchSpec &arch) ABICreateInstance create_callback; for (uint32_t idx = 0; - (create_callback = PluginManager::GetABICreateCallbackAtIndex(idx)) != NULL; + (create_callback = PluginManager::GetABICreateCallbackAtIndex(idx)) != nullptr; ++idx) { abi_sp = create_callback(arch); @@ -39,19 +43,9 @@ ABI::FindPlugin (const ArchSpec &arch) return abi_sp; } -//---------------------------------------------------------------------- -// Constructor -//---------------------------------------------------------------------- -ABI::ABI() -{ -} +ABI::ABI() = default; -//---------------------------------------------------------------------- -// Destructor -//---------------------------------------------------------------------- -ABI::~ABI() -{ -} +ABI::~ABI() = default; bool ABI::GetRegisterInfoByName (const ConstString &name, RegisterInfo &info) @@ -62,7 +56,7 @@ ABI::GetRegisterInfoByName (const ConstString &name, RegisterInfo &info) { const char *unique_name_cstr = name.GetCString(); uint32_t i; - for (i=0; i<count; ++i) + for (i = 0; i < count; ++i) { if (register_info_array[i].name == unique_name_cstr) { @@ -70,7 +64,7 @@ ABI::GetRegisterInfoByName (const ConstString &name, RegisterInfo &info) return true; } } - for (i=0; i<count; ++i) + for (i = 0; i < count; ++i) { if (register_info_array[i].alt_name == unique_name_cstr) { @@ -92,7 +86,7 @@ ABI::GetRegisterInfoByKind (RegisterKind reg_kind, uint32_t reg_num, RegisterInf const RegisterInfo *register_info_array = GetRegisterInfoArray (count); if (register_info_array) { - for (uint32_t i=0; i<count; ++i) + for (uint32_t i = 0; i < count; ++i) { if (register_info_array[i].kinds[reg_kind] == reg_num) { @@ -148,7 +142,7 @@ ABI::GetReturnValueObject (Thread &thread, ExpressionVariableSP clang_expr_variable_sp(persistent_expression_state->CreatePersistentVariable(return_valobj_sp)); - assert (clang_expr_variable_sp.get()); + assert (clang_expr_variable_sp); // Set flags and live data as appropriate @@ -211,3 +205,27 @@ ABI::PrepareTrivialCall (Thread &thread, assert( !"Should never get here!" ); return false; } + +bool +ABI::GetFallbackRegisterLocation (const RegisterInfo *reg_info, + UnwindPlan::Row::RegisterLocation &unwind_regloc) +{ + // Did the UnwindPlan fail to give us the caller's stack pointer? + // The stack pointer is defined to be the same as THIS frame's CFA, so return the CFA value as + // the caller's stack pointer. This is true on x86-32/x86-64 at least. + if (reg_info->kinds[eRegisterKindGeneric] == LLDB_REGNUM_GENERIC_SP) + { + unwind_regloc.SetIsCFAPlusOffset(0); + return true; + } + + // If a volatile register is being requested, we don't want to forward the next frame's register contents + // up the stack -- the register is not retrievable at this frame. + if (RegisterIsVolatile(reg_info)) + { + unwind_regloc.SetUndefined(); + return true; + } + + return false; +} |