1 // Copyright 2018 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 // +build linux 6 // +build amd64 arm64 ppc64 ppc64le 7 8 package runtime 9 10 // ELF64 structure definitions for use by the vDSO loader 11 12 type elfSym struct { 13 st_name uint32 14 st_info byte 15 st_other byte 16 st_shndx uint16 17 st_value uint64 18 st_size uint64 19 } 20 21 type elfVerdef struct { 22 vd_version uint16 /* Version revision */ 23 vd_flags uint16 /* Version information */ 24 vd_ndx uint16 /* Version Index */ 25 vd_cnt uint16 /* Number of associated aux entries */ 26 vd_hash uint32 /* Version name hash value */ 27 vd_aux uint32 /* Offset in bytes to verdaux array */ 28 vd_next uint32 /* Offset in bytes to next verdef entry */ 29 } 30 31 type elfEhdr struct { 32 e_ident [_EI_NIDENT]byte /* Magic number and other info */ 33 e_type uint16 /* Object file type */ 34 e_machine uint16 /* Architecture */ 35 e_version uint32 /* Object file version */ 36 e_entry uint64 /* Entry point virtual address */ 37 e_phoff uint64 /* Program header table file offset */ 38 e_shoff uint64 /* Section header table file offset */ 39 e_flags uint32 /* Processor-specific flags */ 40 e_ehsize uint16 /* ELF header size in bytes */ 41 e_phentsize uint16 /* Program header table entry size */ 42 e_phnum uint16 /* Program header table entry count */ 43 e_shentsize uint16 /* Section header table entry size */ 44 e_shnum uint16 /* Section header table entry count */ 45 e_shstrndx uint16 /* Section header string table index */ 46 } 47 48 type elfPhdr struct { 49 p_type uint32 /* Segment type */ 50 p_flags uint32 /* Segment flags */ 51 p_offset uint64 /* Segment file offset */ 52 p_vaddr uint64 /* Segment virtual address */ 53 p_paddr uint64 /* Segment physical address */ 54 p_filesz uint64 /* Segment size in file */ 55 p_memsz uint64 /* Segment size in memory */ 56 p_align uint64 /* Segment alignment */ 57 } 58 59 type elfShdr struct { 60 sh_name uint32 /* Section name (string tbl index) */ 61 sh_type uint32 /* Section type */ 62 sh_flags uint64 /* Section flags */ 63 sh_addr uint64 /* Section virtual addr at execution */ 64 sh_offset uint64 /* Section file offset */ 65 sh_size uint64 /* Section size in bytes */ 66 sh_link uint32 /* Link to another section */ 67 sh_info uint32 /* Additional section information */ 68 sh_addralign uint64 /* Section alignment */ 69 sh_entsize uint64 /* Entry size if section holds table */ 70 } 71 72 type elfDyn struct { 73 d_tag int64 /* Dynamic entry type */ 74 d_val uint64 /* Integer value */ 75 } 76 77 type elfVerdaux struct { 78 vda_name uint32 /* Version or dependency names */ 79 vda_next uint32 /* Offset in bytes to next verdaux entry */ 80 } 81