[PATCH] D38418: Add ELFOSABI_FIRST_ARCH, ELFOSABI_LAST_ARCH and start using those in llvm-readobj

Rafael Avila de Espindola via llvm-commits llvm-commits at lists.llvm.org
Mon Oct 2 12:21:58 PDT 2017


It is not clear where ELFOSABI_STANDALONE came from. It is not in

http://www.sco.com/developers/gabi/latest/ch4.eheader.html

We should try to delete it, but that can be a followup patch.

This LGTM.

Thanks,
Rafael

Konstantin Zhuravlyov via Phabricator via llvm-commits
<llvm-commits at lists.llvm.org> writes:

> kzhuravl updated this revision to Diff 117402.
> kzhuravl marked 4 inline comments as done.
> kzhuravl added a comment.
>
> Address review feedback.
>
>
> https://reviews.llvm.org/D38418
>
> Files:
>   include/llvm/BinaryFormat/ELF.h
>   tools/llvm-readobj/ELFDumper.cpp
>
>
> Index: tools/llvm-readobj/ELFDumper.cpp
> ===================================================================
> --- tools/llvm-readobj/ELFDumper.cpp
> +++ tools/llvm-readobj/ELFDumper.cpp
> @@ -821,12 +821,22 @@
>    {"AROS",         "AROS",                 ELF::ELFOSABI_AROS},
>    {"FenixOS",      "FenixOS",              ELF::ELFOSABI_FENIXOS},
>    {"CloudABI",     "CloudABI",             ELF::ELFOSABI_CLOUDABI},
> -  {"C6000_ELFABI", "Bare-metal C6000",     ELF::ELFOSABI_C6000_ELFABI},
> -  {"C6000_LINUX",  "Linux C6000",          ELF::ELFOSABI_C6000_LINUX},
> -  {"ARM",          "ARM",                  ELF::ELFOSABI_ARM},
>    {"Standalone",   "Standalone App",       ELF::ELFOSABI_STANDALONE}
>  };
>  
> +static const EnumEntry<unsigned> AMDGPUElfOSABI[] = {
> +  {"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA}
> +};
> +
> +static const EnumEntry<unsigned> ARMElfOSABI[] = {
> +  {"ARM", "ARM", ELF::ELFOSABI_ARM}
> +};
> +
> +static const EnumEntry<unsigned> C6000ElfOSABI[] = {
> +  {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI},
> +  {"C6000_LINUX",  "Linux C6000",      ELF::ELFOSABI_C6000_LINUX}
> +};
> +
>  static const EnumEntry<unsigned> ElfMachineType[] = {
>    ENUM_ENT(EM_NONE,          "None"),
>    ENUM_ENT(EM_M32,           "WE32100"),
> @@ -3512,13 +3522,22 @@
>                    makeArrayRef(ElfDataEncoding));
>        W.printNumber("FileVersion", e->e_ident[ELF::EI_VERSION]);
>  
> -      // Handle architecture specific OS/ABI values.
> -      if (e->e_machine == ELF::EM_AMDGPU &&
> -          e->e_ident[ELF::EI_OSABI] == ELF::ELFOSABI_AMDGPU_HSA)
> -        W.printHex("OS/ABI", "AMDGPU_HSA", ELF::ELFOSABI_AMDGPU_HSA);
> -      else
> -        W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI],
> -                    makeArrayRef(ElfOSABI));
> +      auto OSABI = makeArrayRef(ElfOSABI);
> +      if (e->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH &&
> +          e->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) {
> +        switch (e->e_machine) {
> +        case ELF::EM_AMDGPU:
> +          OSABI = makeArrayRef(AMDGPUElfOSABI);
> +          break;
> +        case ELF::EM_ARM:
> +          OSABI = makeArrayRef(ARMElfOSABI);
> +          break;
> +        case ELF::EM_TI_C6000:
> +          OSABI = makeArrayRef(C6000ElfOSABI);
> +          break;
> +        }
> +      }
> +      W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI], OSABI);
>        W.printNumber("ABIVersion", e->e_ident[ELF::EI_ABIVERSION]);
>        W.printBinary("Unused", makeArrayRef(e->e_ident).slice(ELF::EI_PAD));
>      }
> Index: include/llvm/BinaryFormat/ELF.h
> ===================================================================
> --- include/llvm/BinaryFormat/ELF.h
> +++ include/llvm/BinaryFormat/ELF.h
> @@ -353,11 +353,13 @@
>    ELFOSABI_AROS = 15,         // AROS
>    ELFOSABI_FENIXOS = 16,      // FenixOS
>    ELFOSABI_CLOUDABI = 17,     // Nuxi CloudABI
> -  ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
> +  ELFOSABI_FIRST_ARCH = 64,   // First architecture-specific OS ABI
>    ELFOSABI_AMDGPU_HSA = 64,   // AMD HSA runtime
> +  ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
>    ELFOSABI_C6000_LINUX = 65,  // Linux TMS320C6000
>    ELFOSABI_ARM = 97,          // ARM
> -  ELFOSABI_STANDALONE = 255   // Standalone (embedded) application
> +  ELFOSABI_STANDALONE = 255,  // Standalone (embedded) application
> +  ELFOSABI_LAST_ARCH = 255    // Last Architecture-specific OS ABI
>  };
>  
>  #define ELF_RELOC(name, value) name = value,
>
>
> Index: tools/llvm-readobj/ELFDumper.cpp
> ===================================================================
> --- tools/llvm-readobj/ELFDumper.cpp
> +++ tools/llvm-readobj/ELFDumper.cpp
> @@ -821,12 +821,22 @@
>    {"AROS",         "AROS",                 ELF::ELFOSABI_AROS},
>    {"FenixOS",      "FenixOS",              ELF::ELFOSABI_FENIXOS},
>    {"CloudABI",     "CloudABI",             ELF::ELFOSABI_CLOUDABI},
> -  {"C6000_ELFABI", "Bare-metal C6000",     ELF::ELFOSABI_C6000_ELFABI},
> -  {"C6000_LINUX",  "Linux C6000",          ELF::ELFOSABI_C6000_LINUX},
> -  {"ARM",          "ARM",                  ELF::ELFOSABI_ARM},
>    {"Standalone",   "Standalone App",       ELF::ELFOSABI_STANDALONE}
>  };
>  
> +static const EnumEntry<unsigned> AMDGPUElfOSABI[] = {
> +  {"AMDGPU_HSA", "AMDGPU - HSA", ELF::ELFOSABI_AMDGPU_HSA}
> +};
> +
> +static const EnumEntry<unsigned> ARMElfOSABI[] = {
> +  {"ARM", "ARM", ELF::ELFOSABI_ARM}
> +};
> +
> +static const EnumEntry<unsigned> C6000ElfOSABI[] = {
> +  {"C6000_ELFABI", "Bare-metal C6000", ELF::ELFOSABI_C6000_ELFABI},
> +  {"C6000_LINUX",  "Linux C6000",      ELF::ELFOSABI_C6000_LINUX}
> +};
> +
>  static const EnumEntry<unsigned> ElfMachineType[] = {
>    ENUM_ENT(EM_NONE,          "None"),
>    ENUM_ENT(EM_M32,           "WE32100"),
> @@ -3512,13 +3522,22 @@
>                    makeArrayRef(ElfDataEncoding));
>        W.printNumber("FileVersion", e->e_ident[ELF::EI_VERSION]);
>  
> -      // Handle architecture specific OS/ABI values.
> -      if (e->e_machine == ELF::EM_AMDGPU &&
> -          e->e_ident[ELF::EI_OSABI] == ELF::ELFOSABI_AMDGPU_HSA)
> -        W.printHex("OS/ABI", "AMDGPU_HSA", ELF::ELFOSABI_AMDGPU_HSA);
> -      else
> -        W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI],
> -                    makeArrayRef(ElfOSABI));
> +      auto OSABI = makeArrayRef(ElfOSABI);
> +      if (e->e_ident[ELF::EI_OSABI] >= ELF::ELFOSABI_FIRST_ARCH &&
> +          e->e_ident[ELF::EI_OSABI] <= ELF::ELFOSABI_LAST_ARCH) {
> +        switch (e->e_machine) {
> +        case ELF::EM_AMDGPU:
> +          OSABI = makeArrayRef(AMDGPUElfOSABI);
> +          break;
> +        case ELF::EM_ARM:
> +          OSABI = makeArrayRef(ARMElfOSABI);
> +          break;
> +        case ELF::EM_TI_C6000:
> +          OSABI = makeArrayRef(C6000ElfOSABI);
> +          break;
> +        }
> +      }
> +      W.printEnum("OS/ABI", e->e_ident[ELF::EI_OSABI], OSABI);
>        W.printNumber("ABIVersion", e->e_ident[ELF::EI_ABIVERSION]);
>        W.printBinary("Unused", makeArrayRef(e->e_ident).slice(ELF::EI_PAD));
>      }
> Index: include/llvm/BinaryFormat/ELF.h
> ===================================================================
> --- include/llvm/BinaryFormat/ELF.h
> +++ include/llvm/BinaryFormat/ELF.h
> @@ -353,11 +353,13 @@
>    ELFOSABI_AROS = 15,         // AROS
>    ELFOSABI_FENIXOS = 16,      // FenixOS
>    ELFOSABI_CLOUDABI = 17,     // Nuxi CloudABI
> -  ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
> +  ELFOSABI_FIRST_ARCH = 64,   // First architecture-specific OS ABI
>    ELFOSABI_AMDGPU_HSA = 64,   // AMD HSA runtime
> +  ELFOSABI_C6000_ELFABI = 64, // Bare-metal TMS320C6000
>    ELFOSABI_C6000_LINUX = 65,  // Linux TMS320C6000
>    ELFOSABI_ARM = 97,          // ARM
> -  ELFOSABI_STANDALONE = 255   // Standalone (embedded) application
> +  ELFOSABI_STANDALONE = 255,  // Standalone (embedded) application
> +  ELFOSABI_LAST_ARCH = 255    // Last Architecture-specific OS ABI
>  };
>  
>  #define ELF_RELOC(name, value) name = value,
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