diff options
Diffstat (limited to 'lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp')
| -rw-r--r-- | lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp index 4c6782d59c8..cb8bd649f07 100644 --- a/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp +++ b/lldb/source/Plugins/ObjectFile/ELF/ObjectFileELF.cpp @@ -1894,6 +1894,10 @@ FindArmAarch64MappingSymbol(const char* symbol_name) return '\0'; } +#define STO_MIPS_ISA (3 << 6) +#define STO_MICROMIPS (2 << 6) +#define IS_MICROMIPS(ST_OTHER) (((ST_OTHER) & STO_MIPS_ISA) == STO_MICROMIPS) + // private unsigned ObjectFileELF::ParseSymbols (Symtab *symtab, @@ -2113,6 +2117,37 @@ ObjectFileELF::ParseSymbols (Symtab *symtab, } } } + + /* + * MIPS: + * The bit #0 of an address is used for ISA mode (1 for microMIPS, 0 for MIPS). + * This allows processer to switch between microMIPS and MIPS without any need + * for special mode-control register. However, apart from .debug_line, none of + * the ELF/DWARF sections set the ISA bit (for symbol or section). Use st_other + * flag to check whether the symbol is microMIPS and then set the address class + * accordingly. + */ + const llvm::Triple::ArchType llvm_arch = arch.GetMachine(); + if (llvm_arch == llvm::Triple::mips || llvm_arch == llvm::Triple::mipsel + || llvm_arch == llvm::Triple::mips64 || llvm_arch == llvm::Triple::mips64el) + { + if (IS_MICROMIPS(symbol.st_other)) + m_address_class_map[symbol.st_value] = eAddressClassCodeAlternateISA; + else if ((symbol.st_value & 1) && (symbol_type == eSymbolTypeCode)) + { + symbol.st_value = symbol.st_value & (~1ull); + m_address_class_map[symbol.st_value] = eAddressClassCodeAlternateISA; + } + else + { + if (symbol_type == eSymbolTypeCode) + m_address_class_map[symbol.st_value] = eAddressClassCode; + else if (symbol_type == eSymbolTypeData) + m_address_class_map[symbol.st_value] = eAddressClassData; + else + m_address_class_map[symbol.st_value] = eAddressClassUnknown; + } + } } // symbol_value_offset may contain 0 for ARM symbols or -1 for |
