251 lines
9.6 KiB
C
251 lines
9.6 KiB
C
/* PPC64 ELF support for BFD.
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Copyright (C) 2003-2016 Free Software Foundation, Inc.
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This file is part of BFD, the Binary File Descriptor library.
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
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MA 02110-1301, USA. */
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#ifndef _ELF_PPC64_H
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#define _ELF_PPC64_H
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#include "elf/reloc-macros.h"
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/* Relocations. */
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START_RELOC_NUMBERS (elf_ppc64_reloc_type)
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RELOC_NUMBER (R_PPC64_NONE, 0)
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RELOC_NUMBER (R_PPC64_ADDR32, 1)
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RELOC_NUMBER (R_PPC64_ADDR24, 2)
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RELOC_NUMBER (R_PPC64_ADDR16, 3)
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RELOC_NUMBER (R_PPC64_ADDR16_LO, 4)
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RELOC_NUMBER (R_PPC64_ADDR16_HI, 5)
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RELOC_NUMBER (R_PPC64_ADDR16_HA, 6)
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RELOC_NUMBER (R_PPC64_ADDR14, 7)
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RELOC_NUMBER (R_PPC64_ADDR14_BRTAKEN, 8)
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RELOC_NUMBER (R_PPC64_ADDR14_BRNTAKEN, 9)
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RELOC_NUMBER (R_PPC64_REL24, 10)
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RELOC_NUMBER (R_PPC64_REL14, 11)
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RELOC_NUMBER (R_PPC64_REL14_BRTAKEN, 12)
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RELOC_NUMBER (R_PPC64_REL14_BRNTAKEN, 13)
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RELOC_NUMBER (R_PPC64_GOT16, 14)
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RELOC_NUMBER (R_PPC64_GOT16_LO, 15)
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RELOC_NUMBER (R_PPC64_GOT16_HI, 16)
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RELOC_NUMBER (R_PPC64_GOT16_HA, 17)
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/* 18 unused. 32-bit reloc is R_PPC_PLTREL24. */
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RELOC_NUMBER (R_PPC64_COPY, 19)
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RELOC_NUMBER (R_PPC64_GLOB_DAT, 20)
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RELOC_NUMBER (R_PPC64_JMP_SLOT, 21)
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RELOC_NUMBER (R_PPC64_RELATIVE, 22)
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/* 23 unused. 32-bit reloc is R_PPC_LOCAL24PC. */
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RELOC_NUMBER (R_PPC64_UADDR32, 24)
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RELOC_NUMBER (R_PPC64_UADDR16, 25)
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RELOC_NUMBER (R_PPC64_REL32, 26)
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RELOC_NUMBER (R_PPC64_PLT32, 27)
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RELOC_NUMBER (R_PPC64_PLTREL32, 28)
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RELOC_NUMBER (R_PPC64_PLT16_LO, 29)
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RELOC_NUMBER (R_PPC64_PLT16_HI, 30)
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RELOC_NUMBER (R_PPC64_PLT16_HA, 31)
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/* 32 unused. 32-bit reloc is R_PPC_SDAREL16. */
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RELOC_NUMBER (R_PPC64_SECTOFF, 33)
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RELOC_NUMBER (R_PPC64_SECTOFF_LO, 34)
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RELOC_NUMBER (R_PPC64_SECTOFF_HI, 35)
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RELOC_NUMBER (R_PPC64_SECTOFF_HA, 36)
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RELOC_NUMBER (R_PPC64_REL30, 37)
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RELOC_NUMBER (R_PPC64_ADDR64, 38)
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RELOC_NUMBER (R_PPC64_ADDR16_HIGHER, 39)
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RELOC_NUMBER (R_PPC64_ADDR16_HIGHERA, 40)
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RELOC_NUMBER (R_PPC64_ADDR16_HIGHEST, 41)
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RELOC_NUMBER (R_PPC64_ADDR16_HIGHESTA, 42)
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RELOC_NUMBER (R_PPC64_UADDR64, 43)
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RELOC_NUMBER (R_PPC64_REL64, 44)
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RELOC_NUMBER (R_PPC64_PLT64, 45)
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RELOC_NUMBER (R_PPC64_PLTREL64, 46)
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RELOC_NUMBER (R_PPC64_TOC16, 47)
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RELOC_NUMBER (R_PPC64_TOC16_LO, 48)
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RELOC_NUMBER (R_PPC64_TOC16_HI, 49)
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RELOC_NUMBER (R_PPC64_TOC16_HA, 50)
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RELOC_NUMBER (R_PPC64_TOC, 51)
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RELOC_NUMBER (R_PPC64_PLTGOT16, 52)
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RELOC_NUMBER (R_PPC64_PLTGOT16_LO, 53)
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RELOC_NUMBER (R_PPC64_PLTGOT16_HI, 54)
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RELOC_NUMBER (R_PPC64_PLTGOT16_HA, 55)
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/* The following relocs were added in the 64-bit PowerPC ELF ABI
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revision 1.2. */
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RELOC_NUMBER (R_PPC64_ADDR16_DS, 56)
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RELOC_NUMBER (R_PPC64_ADDR16_LO_DS, 57)
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RELOC_NUMBER (R_PPC64_GOT16_DS, 58)
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RELOC_NUMBER (R_PPC64_GOT16_LO_DS, 59)
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RELOC_NUMBER (R_PPC64_PLT16_LO_DS, 60)
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RELOC_NUMBER (R_PPC64_SECTOFF_DS, 61)
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RELOC_NUMBER (R_PPC64_SECTOFF_LO_DS, 62)
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RELOC_NUMBER (R_PPC64_TOC16_DS, 63)
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RELOC_NUMBER (R_PPC64_TOC16_LO_DS, 64)
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RELOC_NUMBER (R_PPC64_PLTGOT16_DS, 65)
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RELOC_NUMBER (R_PPC64_PLTGOT16_LO_DS, 66)
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/* Relocs added to support TLS. PowerPC64 ELF ABI revision 1.5. */
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RELOC_NUMBER (R_PPC64_TLS, 67)
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RELOC_NUMBER (R_PPC64_DTPMOD64, 68)
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RELOC_NUMBER (R_PPC64_TPREL16, 69)
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RELOC_NUMBER (R_PPC64_TPREL16_LO, 70)
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RELOC_NUMBER (R_PPC64_TPREL16_HI, 71)
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RELOC_NUMBER (R_PPC64_TPREL16_HA, 72)
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RELOC_NUMBER (R_PPC64_TPREL64, 73)
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RELOC_NUMBER (R_PPC64_DTPREL16, 74)
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RELOC_NUMBER (R_PPC64_DTPREL16_LO, 75)
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RELOC_NUMBER (R_PPC64_DTPREL16_HI, 76)
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RELOC_NUMBER (R_PPC64_DTPREL16_HA, 77)
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RELOC_NUMBER (R_PPC64_DTPREL64, 78)
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RELOC_NUMBER (R_PPC64_GOT_TLSGD16, 79)
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RELOC_NUMBER (R_PPC64_GOT_TLSGD16_LO, 80)
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RELOC_NUMBER (R_PPC64_GOT_TLSGD16_HI, 81)
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RELOC_NUMBER (R_PPC64_GOT_TLSGD16_HA, 82)
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RELOC_NUMBER (R_PPC64_GOT_TLSLD16, 83)
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RELOC_NUMBER (R_PPC64_GOT_TLSLD16_LO, 84)
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RELOC_NUMBER (R_PPC64_GOT_TLSLD16_HI, 85)
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RELOC_NUMBER (R_PPC64_GOT_TLSLD16_HA, 86)
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RELOC_NUMBER (R_PPC64_GOT_TPREL16_DS, 87)
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RELOC_NUMBER (R_PPC64_GOT_TPREL16_LO_DS, 88)
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RELOC_NUMBER (R_PPC64_GOT_TPREL16_HI, 89)
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RELOC_NUMBER (R_PPC64_GOT_TPREL16_HA, 90)
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RELOC_NUMBER (R_PPC64_GOT_DTPREL16_DS, 91)
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RELOC_NUMBER (R_PPC64_GOT_DTPREL16_LO_DS, 92)
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RELOC_NUMBER (R_PPC64_GOT_DTPREL16_HI, 93)
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RELOC_NUMBER (R_PPC64_GOT_DTPREL16_HA, 94)
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RELOC_NUMBER (R_PPC64_TPREL16_DS, 95)
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RELOC_NUMBER (R_PPC64_TPREL16_LO_DS, 96)
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RELOC_NUMBER (R_PPC64_TPREL16_HIGHER, 97)
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RELOC_NUMBER (R_PPC64_TPREL16_HIGHERA, 98)
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RELOC_NUMBER (R_PPC64_TPREL16_HIGHEST, 99)
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RELOC_NUMBER (R_PPC64_TPREL16_HIGHESTA, 100)
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RELOC_NUMBER (R_PPC64_DTPREL16_DS, 101)
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RELOC_NUMBER (R_PPC64_DTPREL16_LO_DS, 102)
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RELOC_NUMBER (R_PPC64_DTPREL16_HIGHER, 103)
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RELOC_NUMBER (R_PPC64_DTPREL16_HIGHERA, 104)
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RELOC_NUMBER (R_PPC64_DTPREL16_HIGHEST, 105)
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RELOC_NUMBER (R_PPC64_DTPREL16_HIGHESTA, 106)
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RELOC_NUMBER (R_PPC64_TLSGD, 107)
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RELOC_NUMBER (R_PPC64_TLSLD, 108)
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RELOC_NUMBER (R_PPC64_TOCSAVE, 109)
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/* Added when HA and HI relocs were changed to report overflows. */
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RELOC_NUMBER (R_PPC64_ADDR16_HIGH, 110)
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RELOC_NUMBER (R_PPC64_ADDR16_HIGHA, 111)
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RELOC_NUMBER (R_PPC64_TPREL16_HIGH, 112)
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RELOC_NUMBER (R_PPC64_TPREL16_HIGHA, 113)
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RELOC_NUMBER (R_PPC64_DTPREL16_HIGH, 114)
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RELOC_NUMBER (R_PPC64_DTPREL16_HIGHA, 115)
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/* Added for ELFv2. */
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RELOC_NUMBER (R_PPC64_REL24_NOTOC, 116)
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RELOC_NUMBER (R_PPC64_ADDR64_LOCAL, 117)
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RELOC_NUMBER (R_PPC64_ENTRY, 118)
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#ifndef RELOC_MACROS_GEN_FUNC
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/* Fake relocation only used internally by ld. */
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RELOC_NUMBER (R_PPC64_LO_DS_OPT, 128)
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#endif
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/* Power9 split rel16 for addpcis. */
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RELOC_NUMBER (R_PPC64_REL16DX_HA, 246)
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/* Support STT_GNU_IFUNC plt calls. */
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RELOC_NUMBER (R_PPC64_JMP_IREL, 247)
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RELOC_NUMBER (R_PPC64_IRELATIVE, 248)
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/* These are GNU extensions used in PIC code sequences. */
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RELOC_NUMBER (R_PPC64_REL16, 249)
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RELOC_NUMBER (R_PPC64_REL16_LO, 250)
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RELOC_NUMBER (R_PPC64_REL16_HI, 251)
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RELOC_NUMBER (R_PPC64_REL16_HA, 252)
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/* These are GNU extensions to enable C++ vtable garbage collection. */
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RELOC_NUMBER (R_PPC64_GNU_VTINHERIT, 253)
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RELOC_NUMBER (R_PPC64_GNU_VTENTRY, 254)
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END_RELOC_NUMBERS (R_PPC64_max)
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#define IS_PPC64_TLS_RELOC(R) \
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(((R) >= R_PPC64_TLS && (R) <= R_PPC64_DTPREL16_HIGHESTA) \
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|| ((R) >= R_PPC64_TPREL16_HIGH && (R) <= R_PPC64_DTPREL16_HIGHA))
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/* e_flags bits specifying ABI.
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1 for original function descriptor using ABI,
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2 for revised ABI without function descriptors,
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0 for unspecified or not using any features affected by the differences. */
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#define EF_PPC64_ABI 3
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/* The ELFv2 ABI uses three bits in the symbol st_other field of a
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function definition to specify the number of instructions between a
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function's global entry point and local entry point.
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The global entry point is used when it is necessary to set up the
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toc pointer (r2) for the function. Callers must enter the global
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entry point with r12 set to the global entry point address. On
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return from the function, r2 may have a different value to that
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which it had on entry.
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The local entry point is used when r2 is known to already be valid
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for the function. There is no requirement on r12 when using the
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local entry point, and on return r2 will contain the same value as
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at entry.
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A value of zero in these bits means that the function has a single
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entry point with no requirement on r12 or r2, and that on return r2
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will contain the same value as at entry.
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Values of one and seven are reserved. */
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#define STO_PPC64_LOCAL_BIT 5
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#define STO_PPC64_LOCAL_MASK (7 << STO_PPC64_LOCAL_BIT)
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// 3 bit other field to bytes.
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static inline unsigned int
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ppc64_decode_local_entry(unsigned int other)
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{
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return ((1 << other) >> 2) << 2;
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}
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// bytes to field value.
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static inline unsigned int
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ppc64_encode_local_entry(unsigned int val)
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{
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return (val >= 4 * 4
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? (val >= 8 * 4
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? (val >= 16 * 4 ? 6 : 5)
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: 4)
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: (val >= 2 * 4
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? 3
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: (val >= 1 * 4 ? 2 : 0)));
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}
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/* st_other to number of bytes. */
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#define PPC64_LOCAL_ENTRY_OFFSET(other) \
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ppc64_decode_local_entry (((other) & STO_PPC64_LOCAL_MASK) \
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>> STO_PPC64_LOCAL_BIT)
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/* number of bytes to st_other. */
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#define PPC64_SET_LOCAL_ENTRY_OFFSET(val) \
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ppc64_encode_local_entry (val) << STO_PPC64_LOCAL_BIT
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/* Specify the start of the .glink section. */
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#define DT_PPC64_GLINK DT_LOPROC
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/* Specify the start and size of the .opd section. */
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#define DT_PPC64_OPD (DT_LOPROC + 1)
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#define DT_PPC64_OPDSZ (DT_LOPROC + 2)
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/* Specify whether various optimisations are possible. */
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#define DT_PPC64_OPT (DT_LOPROC + 3)
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#define PPC64_OPT_TLS 1
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#define PPC64_OPT_MULTI_TOC 2
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#endif /* _ELF_PPC64_H */
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