diff options
Diffstat (limited to 'elfcpp/mips.h')
| -rw-r--r-- | elfcpp/mips.h | 143 |
1 files changed, 126 insertions, 17 deletions
diff --git a/elfcpp/mips.h b/elfcpp/mips.h index 91525c8..91f7270 100644 --- a/elfcpp/mips.h +++ b/elfcpp/mips.h @@ -1,7 +1,8 @@ // mips.h -- ELF definitions specific to EM_MIPS -*- C++ -*- // Copyright (C) 2012-2014 Free Software Foundation, Inc. -// Written by Aleksandar Simeonov <aleksandar.simeonov@rt-rk.com>. +// Written by Sasa Stankovic <sasa.stankovic@rt-rk.com> +// and Aleksandar Simeonov <aleksandar.simeonov@rt-rk.com>. // This file is part of elfcpp. @@ -46,16 +47,16 @@ enum { R_MIPS_NONE = 0, R_MIPS_16 = 1, - R_MIPS_32 = 2, - R_MIPS_REL32 = 3, + R_MIPS_32 = 2, // In Elf 64: alias R_MIPS_ADD + R_MIPS_REL32 = 3, // In Elf 64: alias R_MIPS_REL R_MIPS_26 = 4, R_MIPS_HI16 = 5, R_MIPS_LO16 = 6, - R_MIPS_GPREL16 = 7, + R_MIPS_GPREL16 = 7, // In Elf 64: alias R_MIPS_GPREL R_MIPS_LITERAL = 8, - R_MIPS_GOT16 = 9, + R_MIPS_GOT16 = 9, // In Elf 64: alias R_MIPS_GOT R_MIPS_PC16 = 10, - R_MIPS_CALL16 = 11, + R_MIPS_CALL16 = 11, // In Elf 64: alias R_MIPS_CALL R_MIPS_GPREL32 = 12, R_MIPS_UNUSED1 = 13, R_MIPS_UNUSED2 = 14, @@ -69,48 +70,101 @@ enum R_MIPS_GOT_HI16 = 22, R_MIPS_GOT_LO16 = 23, R_MIPS_SUB = 24, - R_MIPS_INSERT_A = 25, // Empty relocation - R_MIPS_INSERT_B = 26, // Empty relocation - R_MIPS_DELETE = 27, // Empty relocation + R_MIPS_INSERT_A = 25, + R_MIPS_INSERT_B = 26, + R_MIPS_DELETE = 27, R_MIPS_HIGHER = 28, R_MIPS_HIGHEST = 29, R_MIPS_CALL_HI16 = 30, R_MIPS_CALL_LO16 = 31, R_MIPS_SCN_DISP = 32, - R_MIPS_REL16 = 33, // Empty relocation - R_MIPS_ADD_IMMEDIATE = 34, // Empty relocation - R_MIPS_PJUMP = 35, // Empty relocation - R_MIPS_RELGOT = 36, // Empty relocation + R_MIPS_REL16 = 33, + R_MIPS_ADD_IMMEDIATE = 34, + R_MIPS_PJUMP = 35, + R_MIPS_RELGOT = 36, R_MIPS_JALR = 37, + // TLS relocations. R_MIPS_TLS_DTPMOD32 = 38, R_MIPS_TLS_DTPREL32 = 39, - R_MIPS_TLS_DTPMOD64 = 40, // Empty relocation - R_MIPS_TLS_DTPREL64 = 41, // Empty relocation + R_MIPS_TLS_DTPMOD64 = 40, + R_MIPS_TLS_DTPREL64 = 41, R_MIPS_TLS_GD = 42, R_MIPS_TLS_LDM = 43, R_MIPS_TLS_DTPREL_HI16 = 44, R_MIPS_TLS_DTPREL_LO16 = 45, R_MIPS_TLS_GOTTPREL = 46, R_MIPS_TLS_TPREL32 = 47, - R_MIPS_TLS_TPREL64 = 48, // Empty relocation + R_MIPS_TLS_TPREL64 = 48, R_MIPS_TLS_TPREL_HI16 = 49, R_MIPS_TLS_TPREL_LO16 = 50, R_MIPS_GLOB_DAT = 51, + // These relocs are used for the mips16. R_MIPS16_26 = 100, R_MIPS16_GPREL = 101, R_MIPS16_GOT16 = 102, R_MIPS16_CALL16 = 103, R_MIPS16_HI16 = 104, R_MIPS16_LO16 = 105, + R_MIPS16_TLS_GD = 106, + R_MIPS16_TLS_LDM = 107, + R_MIPS16_TLS_DTPREL_HI16 = 108, + R_MIPS16_TLS_DTPREL_LO16 = 109, + R_MIPS16_TLS_GOTTPREL = 110, + R_MIPS16_TLS_TPREL_HI16 = 111, + R_MIPS16_TLS_TPREL_LO16 = 112, + R_MIPS_COPY = 126, R_MIPS_JUMP_SLOT = 127, + + // These relocations are specific to microMIPS. + R_MICROMIPS_26_S1 = 133, + R_MICROMIPS_HI16 = 134, + R_MICROMIPS_LO16 = 135, + R_MICROMIPS_GPREL16 = 136, // In Elf 64: alias R_MICROMIPS_GPREL + R_MICROMIPS_LITERAL = 137, + R_MICROMIPS_GOT16 = 138, // In Elf 64: alias R_MICROMIPS_GOT + R_MICROMIPS_PC7_S1 = 139, + R_MICROMIPS_PC10_S1 = 140, + R_MICROMIPS_PC16_S1 = 141, + R_MICROMIPS_CALL16 = 142, // In Elf 64: alias R_MICROMIPS_CALL + R_MICROMIPS_GOT_DISP = 145, + R_MICROMIPS_GOT_PAGE = 146, + R_MICROMIPS_GOT_OFST = 147, + R_MICROMIPS_GOT_HI16 = 148, + R_MICROMIPS_GOT_LO16 = 149, + R_MICROMIPS_SUB = 150, + R_MICROMIPS_HIGHER = 151, + R_MICROMIPS_HIGHEST = 152, + R_MICROMIPS_CALL_HI16 = 153, + R_MICROMIPS_CALL_LO16 = 154, + R_MICROMIPS_SCN_DISP = 155, + R_MICROMIPS_JALR = 156, + R_MICROMIPS_HI0_LO16 = 157, + // TLS relocations. + R_MICROMIPS_TLS_GD = 162, + R_MICROMIPS_TLS_LDM = 163, + R_MICROMIPS_TLS_DTPREL_HI16 = 164, + R_MICROMIPS_TLS_DTPREL_LO16 = 165, + R_MICROMIPS_TLS_GOTTPREL = 166, + R_MICROMIPS_TLS_TPREL_HI16 = 169, + R_MICROMIPS_TLS_TPREL_LO16 = 170, + // microMIPS GP- and PC-relative relocations. + R_MICROMIPS_GPREL7_S2 = 172, + R_MICROMIPS_PC23_S2 = 173, + + // This was a GNU extension used by embedded-PIC. It was co-opted by + // mips-linux for exception-handling data. GCC stopped using it in + // May, 2004, then started using it again for compact unwind tables. R_MIPS_PC32 = 248, + R_MIPS_EH = 249, + // This relocation is used internally by gas. R_MIPS_GNU_REL16_S2 = 250, + // These are GNU extensions to enable C++ vtable garbage collection. R_MIPS_GNU_VTINHERIT = 253, R_MIPS_GNU_VTENTRY = 254 }; -// Processor specific flags for the ELF header e_flags field. */ +// Processor specific flags for the ELF header e_flags field. enum { // At least one .noreorder directive appears in the source. @@ -236,6 +290,10 @@ enum // Note that one of the MIPS16 bits overlaps with STO_MIPS_PIC. STO_MIPS_ISA = 0xc0, + // The mask spanning the rest of MIPS psABI flags. At most one is expected + // to be set except for STO_MIPS16. + STO_MIPS_FLAGS = ~(STO_MIPS_ISA | 0x3), + // The MIPS psABI was updated in 2008 with support for PLTs and copy // relocs. There are therefore two types of nonzero SHN_UNDEF functions: // PLT entries and traditional MIPS lazy binding stubs. We mark the former @@ -263,6 +321,57 @@ enum DTP_OFFSET = 0x8000 }; + +bool +elf_st_is_mips16(unsigned char st_other) +{ return (st_other & elfcpp::STO_MIPS16) == elfcpp::STO_MIPS16; } + +bool +elf_st_is_micromips(unsigned char st_other) +{ return (st_other & elfcpp::STO_MIPS_ISA) == elfcpp::STO_MICROMIPS; } + +// Whether the ABI is N32. +bool +abi_n32(elfcpp::Elf_Word e_flags) +{ return (e_flags & elfcpp::EF_MIPS_ABI2) != 0; } + +// Whether the ABI is N64. +bool +abi_64(unsigned char ei_class) +{ return ei_class == elfcpp::ELFCLASS64; } + +// Whether the file has microMIPS code. +bool +is_micromips(elfcpp::Elf_Word e_flags) +{ return (e_flags & elfcpp::EF_MIPS_ARCH_ASE_MICROMIPS) != 0; } + +// Values which may appear in the kind field of an Elf_Options structure. +enum +{ + // Undefined. + ODK_NULL = 0, + // Register usage and GP value. + ODK_REGINFO = 1, + // Exception processing information. + ODK_EXCEPTIONS = 2, + // Section padding information. + ODK_PAD = 3, + // Hardware workarounds performed. + ODK_HWPATCH = 4, + // Fill value used by the linker. + ODK_FILL = 5, + // Reserved space for desktop tools. + ODK_TAGS = 6, + // Hardware workarounds, AND bits when merging. + ODK_HWAND = 7, + // Hardware workarounds, OR bits when merging. + ODK_HWOR = 8, + // GP group to use for text/data sections. + ODK_GP_GROUP = 9, + // ID information. + ODK_IDENT = 10 +}; + } // End namespace elfcpp. #endif // !defined(ELFCPP_MIPS_H) |