// powerpc.h -- ELF definitions specific to EM_PPC and EM_PPC64 -*- C++ -*- // Copyright (C) 2008-2021 Free Software Foundation, Inc. // Written by David S. Miller . // This file is part of elfcpp. // This program is free software; you can redistribute it and/or // modify it under the terms of the GNU Library General Public License // as published by the Free Software Foundation; either version 2, or // (at your option) any later version. // In addition to the permissions in the GNU Library General Public // License, the Free Software Foundation gives you unlimited // permission to link the compiled version of this file into // combinations with other programs, and to distribute those // combinations without any restriction coming from the use of this // file. (The Library Public License restrictions do apply in other // respects; for example, they cover modification of the file, and /// distribution when not linked into a combined executable.) // This program is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU // Library General Public License for more details. // You should have received a copy of the GNU Library General Public // License along with this program; if not, write to the Free Software // Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, MA // 02110-1301, USA. #ifndef ELFCPP_POWERPC_H #define ELFCPP_POWERPC_H namespace elfcpp { // The relocation numbers for 32-bit and 64-bit powerpc are nearly // identical. Therefore I've adopted the convention of using // R_POWERPC_foo for values which are the same in R_PPC_* and R_PPC64_*. // For relocations which are specific to the word size I will use // R_PPC_foo or R_PPC64_foo. enum { R_POWERPC_NONE = 0, R_POWERPC_ADDR32 = 1, R_POWERPC_ADDR24 = 2, R_POWERPC_ADDR16 = 3, R_POWERPC_ADDR16_LO = 4, R_POWERPC_ADDR16_HI = 5, R_POWERPC_ADDR16_HA = 6, R_POWERPC_ADDR14 = 7, R_POWERPC_ADDR14_BRTAKEN = 8, R_POWERPC_ADDR14_BRNTAKEN = 9, R_POWERPC_REL24 = 10, R_POWERPC_REL14 = 11, R_POWERPC_REL14_BRTAKEN = 12, R_POWERPC_REL14_BRNTAKEN = 13, R_POWERPC_GOT16 = 14, R_POWERPC_GOT16_LO = 15, R_POWERPC_GOT16_HI = 16, R_POWERPC_GOT16_HA = 17, R_PPC_PLTREL24 = 18, R_POWERPC_COPY = 19, R_POWERPC_GLOB_DAT = 20, R_POWERPC_JMP_SLOT = 21, R_POWERPC_RELATIVE = 22, R_PPC_LOCAL24PC = 23, R_POWERPC_UADDR32 = 24, R_POWERPC_UADDR16 = 25, R_POWERPC_REL32 = 26, R_POWERPC_PLT32 = 27, R_POWERPC_PLTREL32 = 28, R_POWERPC_PLT16_LO = 29, R_POWERPC_PLT16_HI = 30, R_POWERPC_PLT16_HA = 31, R_PPC_SDAREL16 = 32, R_POWERPC_SECTOFF = 33, R_POWERPC_SECTOFF_LO = 34, R_POWERPC_SECTOFF_HI = 35, R_POWERPC_SECTOFF_HA = 36, R_POWERPC_ADDR30 = 37, R_PPC64_ADDR64 = 38, R_PPC64_ADDR16_HIGHER = 39, R_PPC64_ADDR16_HIGHERA = 40, R_PPC64_ADDR16_HIGHEST = 41, R_PPC64_ADDR16_HIGHESTA = 42, R_PPC64_UADDR64 = 43, R_PPC64_REL64 = 44, R_PPC64_PLT64 = 45, R_PPC64_PLTREL64 = 46, R_PPC64_TOC16 = 47, R_PPC64_TOC16_LO = 48, R_PPC64_TOC16_HI = 49, R_PPC64_TOC16_HA = 50, R_PPC64_TOC = 51, R_PPC64_PLTGOT16 = 52, R_PPC64_PLTGOT16_LO = 53, R_PPC64_PLTGOT16_HI = 54, R_PPC64_PLTGOT16_HA = 55, R_PPC64_ADDR16_DS = 56, R_PPC64_ADDR16_LO_DS = 57, R_PPC64_GOT16_DS = 58, R_PPC64_GOT16_LO_DS = 59, R_PPC64_PLT16_LO_DS = 60, R_PPC64_SECTOFF_DS = 61, R_PPC64_SECTOFF_LO_DS = 62, R_PPC64_TOC16_DS = 63, R_PPC64_TOC16_LO_DS = 64, R_PPC64_PLTGOT16_DS = 65, R_PPC64_PLTGOT16_LO_DS = 66, R_POWERPC_TLS = 67, R_POWERPC_DTPMOD = 68, R_POWERPC_TPREL16 = 69, R_POWERPC_TPREL16_LO = 70, R_POWERPC_TPREL16_HI = 71, R_POWERPC_TPREL16_HA = 72, R_POWERPC_TPREL = 73, R_POWERPC_DTPREL16 = 74, R_POWERPC_DTPREL16_LO = 75, R_POWERPC_DTPREL16_HI = 76, R_POWERPC_DTPREL16_HA = 77, R_POWERPC_DTPREL = 78, R_POWERPC_GOT_TLSGD16 = 79, R_POWERPC_GOT_TLSGD16_LO = 80, R_POWERPC_GOT_TLSGD16_HI = 81, R_POWERPC_GOT_TLSGD16_HA = 82, R_POWERPC_GOT_TLSLD16 = 83, R_POWERPC_GOT_TLSLD16_LO = 84, R_POWERPC_GOT_TLSLD16_HI = 85, R_POWERPC_GOT_TLSLD16_HA = 86, R_POWERPC_GOT_TPREL16 = 87, R_POWERPC_GOT_TPREL16_LO = 88, R_POWERPC_GOT_TPREL16_HI = 89, R_POWERPC_GOT_TPREL16_HA = 90, R_POWERPC_GOT_DTPREL16 = 91, R_POWERPC_GOT_DTPREL16_LO = 92, R_POWERPC_GOT_DTPREL16_HI = 93, R_POWERPC_GOT_DTPREL16_HA = 94, R_PPC_TLSGD = 95, R_PPC64_TPREL16_DS = 95, R_PPC_TLSLD = 96, R_PPC64_TPREL16_LO_DS = 96, R_PPC64_TPREL16_HIGHER = 97, R_PPC64_TPREL16_HIGHERA = 98, R_PPC64_TPREL16_HIGHEST = 99, R_PPC64_TPREL16_HIGHESTA = 100, R_PPC_EMB_NADDR32 = 101, R_PPC64_DTPREL16_DS = 101, R_PPC_EMB_NADDR16 = 102, R_PPC64_DTPREL16_LO_DS = 102, R_PPC_EMB_NADDR16_LO = 103, R_PPC64_DTPREL16_HIGHER = 103, R_PPC_EMB_NADDR16_HI = 104, R_PPC64_DTPREL16_HIGHERA = 104, R_PPC_EMB_NADDR16_HA = 105, R_PPC64_DTPREL16_HIGHEST = 105, R_PPC_EMB_SDAI16 = 106, R_PPC64_DTPREL16_HIGHESTA = 106, R_PPC_EMB_SDA2I16 = 107, R_PPC64_TLSGD = 107, R_PPC_EMB_SDA2REL = 108, R_PPC64_TLSLD = 108, R_PPC_EMB_SDA21 = 109, R_PPC64_TOCSAVE = 109, R_PPC_EMB_MRKREF = 110, R_PPC64_ADDR16_HIGH = 110, R_PPC_EMB_RELSEC16 = 111, R_PPC64_ADDR16_HIGHA = 111, R_PPC_EMB_RELST_LO = 112, R_PPC64_TPREL16_HIGH = 112, R_PPC_EMB_RELST_HI = 113, R_PPC64_TPREL16_HIGHA = 113, R_PPC_EMB_RELST_HA = 114, R_PPC64_DTPREL16_HIGH = 114, R_PPC_EMB_BIT_FLD = 115, R_PPC64_DTPREL16_HIGHA = 115, R_PPC_EMB_RELSDA = 116, R_PPC64_REL24_NOTOC = 116, R_PPC64_ADDR64_LOCAL = 117, R_PPC64_ENTRY = 118, R_POWERPC_PLTSEQ = 119, R_POWERPC_PLTCALL = 120, R_PPC64_PLTSEQ_NOTOC = 121, R_PPC64_PLTCALL_NOTOC = 122, R_PPC64_PCREL_OPT = 123, R_PPC64_REL24_P9NOTOC = 124, R_PPC64_D34 = 128, R_PPC64_D34_LO = 129, R_PPC64_D34_HI30 = 130, R_PPC64_D34_HA30 = 131, R_PPC64_PCREL34 = 132, R_PPC64_GOT_PCREL34 = 133, R_PPC64_PLT_PCREL34 = 134, R_PPC64_PLT_PCREL34_NOTOC = 135, R_PPC64_ADDR16_HIGHER34 = 136, R_PPC64_ADDR16_HIGHERA34 = 137, R_PPC64_ADDR16_HIGHEST34 = 138, R_PPC64_ADDR16_HIGHESTA34 = 139, R_PPC64_REL16_HIGHER34 = 140, R_PPC64_REL16_HIGHERA34 = 141, R_PPC64_REL16_HIGHEST34 = 142, R_PPC64_REL16_HIGHESTA34 = 143, R_PPC64_D28 = 144, R_PPC64_PCREL28 = 145, R_PPC64_TPREL34 = 146, R_PPC64_DTPREL34 = 147, R_PPC64_GOT_TLSGD_PCREL34 = 148, R_PPC64_GOT_TLSLD_PCREL34 = 149, R_PPC64_GOT_TPREL_PCREL34 = 150, R_PPC64_GOT_DTPREL_PCREL34 = 151, R_PPC_VLE_REL8 = 216, R_PPC_VLE_REL15 = 217, R_PPC_VLE_REL24 = 218, R_PPC_VLE_LO16A = 219, R_PPC_VLE_LO16D = 220, R_PPC_VLE_HI16A = 221, R_PPC_VLE_HI16D = 222, R_PPC_VLE_HA16A = 223, R_PPC_VLE_HA16D = 224, R_PPC_VLE_SDA21 = 225, R_PPC_VLE_SDA21_LO = 226, R_PPC_VLE_SDAREL_LO16A = 227, R_PPC_VLE_SDAREL_LO16D = 228, R_PPC_VLE_SDAREL_HI16A = 229, R_PPC_VLE_SDAREL_HI16D = 230, R_PPC_VLE_SDAREL_HA16A = 231, R_PPC_VLE_SDAREL_HA16D = 232, R_PPC64_REL16_HIGH = 240, R_PPC64_REL16_HIGHA = 241, R_PPC64_REL16_HIGHER = 242, R_PPC64_REL16_HIGHERA = 243, R_PPC64_REL16_HIGHEST = 244, R_PPC64_REL16_HIGHESTA = 245, R_POWERPC_REL16DX_HA = 246, R_PPC64_JMP_IREL = 247, R_POWERPC_IRELATIVE = 248, R_POWERPC_REL16 = 249, R_POWERPC_REL16_LO = 250, R_POWERPC_REL16_HI = 251, R_POWERPC_REL16_HA = 252, R_POWERPC_GNU_VTINHERIT = 253, R_POWERPC_GNU_VTENTRY = 254, R_PPC_TOC16 = 255, }; // e_flags values defined for powerpc enum { EF_PPC_EMB = 0x80000000, // PowerPC embedded flag. EF_PPC_RELOCATABLE = 0x00010000, // PowerPC -mrelocatable flag. */ EF_PPC_RELOCATABLE_LIB = 0x00008000, // PowerPC -mrelocatable-lib flag. */ }; // e_flags values defined for powerpc64 enum { // ABI version // 1 for original function descriptor using ABI, // 2 for revised ABI without function descriptors, // 0 for unspecified or not using any features affected by the differences. EF_PPC64_ABI = 3 }; // Object attribute tags. 0-3 are generic. enum { // FP ABI, low 2 bits: // 1 for double precision hard-float, // 2 for soft-float, // 3 for single precision hard-float. // 0 for not tagged or not using any ABIs affected by the differences. // Next 2 bits: // 1 for ibm long double // 2 for 64-bit long double // 3 for IEEE long double. // 0 for not tagged or not using any ABIs affected by the differences. Tag_GNU_Power_ABI_FP = 4, // Value 1 for general purpose registers only, 2 for AltiVec // registers, 3 for SPE registers; 0 for not tagged or not using any // ABIs affected by the differences. Tag_GNU_Power_ABI_Vector = 8, // Value 1 for ABIs using r3/r4 for returning structures <= 8 bytes, // 2 for ABIs using memory; 0 for not tagged or not using any ABIs // affected by the differences. Tag_GNU_Power_ABI_Struct_Return = 12 }; // DT_PPC_OPT bits enum { PPC_OPT_TLS = 1 }; // DT_PPC64_OPT bits enum { PPC64_OPT_TLS = 1, PPC64_OPT_MULTI_TOC = 2, PPC64_OPT_LOCALENTRY = 4 }; enum { // The ELFv2 ABI uses three bits in the symbol st_other field of a // function definition to specify the number of instructions between a // function's global entry point and local entry point. // The global entry point is used when it is necessary to set up the // toc pointer (r2) for the function. Callers must enter the global // entry point with r12 set to the global entry point address. On // return from the function, r2 may have a different value to that // which it had on entry. // The local entry point is used when r2 is known to already be valid // for the function. There is no requirement on r12 when using the // local entry point, and on return r2 will contain the same value as // at entry. // A value of zero in these bits means that the function has a single // entry point with no requirement on r12 or r2, and that on return r2 // will contain the same value as at entry. // Values of one and seven are reserved. STO_PPC64_LOCAL_BIT = 5, STO_PPC64_LOCAL_MASK = 0xE0 }; // 3 bit other field to bytes. static inline unsigned int ppc64_decode_local_entry(unsigned int other) { return ((1 << other) >> 2) << 2; } // bytes to field value. static inline unsigned int ppc64_encode_local_entry(unsigned int val) { return (val >= 4 * 4 ? (val >= 8 * 4 ? (val >= 16 * 4 ? 6 : 5) : 4) : (val >= 2 * 4 ? 3 : (val >= 1 * 4 ? 2 : 0))); } } // End namespace elfcpp. #endif // !defined(ELFCPP_POWERPC_H)