diff options
Diffstat (limited to 'source/Plugins/ABI/MacOSX-i386/ABIMacOSX_i386.cpp')
| -rw-r--r-- | source/Plugins/ABI/MacOSX-i386/ABIMacOSX_i386.cpp | 21 |
1 files changed, 18 insertions, 3 deletions
diff --git a/source/Plugins/ABI/MacOSX-i386/ABIMacOSX_i386.cpp b/source/Plugins/ABI/MacOSX-i386/ABIMacOSX_i386.cpp index 9a1ea11cbae7e..ee5b9298721b5 100644 --- a/source/Plugins/ABI/MacOSX-i386/ABIMacOSX_i386.cpp +++ b/source/Plugins/ABI/MacOSX-i386/ABIMacOSX_i386.cpp @@ -552,7 +552,7 @@ ABIMacOSX_i386::GetArgumentValues (Thread &thread, if (clang_type.IsIntegerType (is_signed)) { ReadIntegerArgument(value->GetScalar(), - clang_type.GetBitSize(), + clang_type.GetBitSize(nullptr), is_signed, thread.GetProcess().get(), current_stack_argument); @@ -560,7 +560,7 @@ ABIMacOSX_i386::GetArgumentValues (Thread &thread, else if (clang_type.IsPointerType()) { ReadIntegerArgument(value->GetScalar(), - clang_type.GetBitSize(), + clang_type.GetBitSize(nullptr), false, thread.GetProcess().get(), current_stack_argument); @@ -672,7 +672,7 @@ ABIMacOSX_i386::GetReturnValueObjectImpl (Thread &thread, if (clang_type.IsIntegerType (is_signed)) { - size_t bit_width = clang_type.GetBitSize(); + size_t bit_width = clang_type.GetBitSize(nullptr); unsigned eax_id = reg_ctx->GetRegisterInfoByName("eax", 0)->kinds[eRegisterKindLLDB]; unsigned edx_id = reg_ctx->GetRegisterInfoByName("edx", 0)->kinds[eRegisterKindLLDB]; @@ -732,6 +732,10 @@ ABIMacOSX_i386::GetReturnValueObjectImpl (Thread &thread, return return_valobj_sp; } +// This defines the CFA as esp+4 +// the saved pc is at CFA-4 (i.e. esp+0) +// The saved esp is CFA+0 + bool ABIMacOSX_i386::CreateFunctionEntryUnwindPlan (UnwindPlan &unwind_plan) { @@ -745,12 +749,18 @@ ABIMacOSX_i386::CreateFunctionEntryUnwindPlan (UnwindPlan &unwind_plan) row->SetCFARegister (sp_reg_num); row->SetCFAOffset (4); row->SetRegisterLocationToAtCFAPlusOffset(pc_reg_num, -4, false); + row->SetRegisterLocationToIsCFAPlusOffset(sp_reg_num, 0, true); unwind_plan.AppendRow (row); unwind_plan.SetSourceName ("i386 at-func-entry default"); unwind_plan.SetSourcedFromCompiler (eLazyBoolNo); return true; } +// This defines the CFA as ebp+8 +// The saved pc is at CFA-4 (i.e. ebp+4) +// The saved ebp is at CFA-8 (i.e. ebp+0) +// The saved esp is CFA+0 + bool ABIMacOSX_i386::CreateDefaultUnwindPlan (UnwindPlan &unwind_plan) { @@ -786,6 +796,11 @@ ABIMacOSX_i386::RegisterIsVolatile (const RegisterInfo *reg_info) } // v. http://developer.apple.com/library/mac/#documentation/developertools/Conceptual/LowLevelABI/130-IA-32_Function_Calling_Conventions/IA32.html#//apple_ref/doc/uid/TP40002492-SW4 +// +// This document ("OS X ABI Function Call Guide", chapter "IA-32 Function Calling Conventions") +// says that the following registers on i386 are preserved aka non-volatile aka callee-saved: +// +// ebx, ebp, esi, edi, esp bool ABIMacOSX_i386::RegisterIsCalleeSaved (const RegisterInfo *reg_info) |