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 //go:build linux && (386 || arm) 6 7 package runtime 8 9 // ELF32 structure definitions for use by the vDSO loader 10 11 type elfSym struct { 12 st_name uint32 13 st_value uint32 14 st_size uint32 15 st_info byte 16 st_other byte 17 st_shndx uint16 18 } 19 20 type elfVerdef struct { 21 vd_version uint16 /* Version revision */ 22 vd_flags uint16 /* Version information */ 23 vd_ndx uint16 /* Version Index */ 24 vd_cnt uint16 /* Number of associated aux entries */ 25 vd_hash uint32 /* Version name hash value */ 26 vd_aux uint32 /* Offset in bytes to verdaux array */ 27 vd_next uint32 /* Offset in bytes to next verdef entry */ 28 } 29 30 type elfEhdr struct { 31 e_ident [_EI_NIDENT]byte /* Magic number and other info */ 32 e_type uint16 /* Object file type */ 33 e_machine uint16 /* Architecture */ 34 e_version uint32 /* Object file version */ 35 e_entry uint32 /* Entry point virtual address */ 36 e_phoff uint32 /* Program header table file offset */ 37 e_shoff uint32 /* Section header table file offset */ 38 e_flags uint32 /* Processor-specific flags */ 39 e_ehsize uint16 /* ELF header size in bytes */ 40 e_phentsize uint16 /* Program header table entry size */ 41 e_phnum uint16 /* Program header table entry count */ 42 e_shentsize uint16 /* Section header table entry size */ 43 e_shnum uint16 /* Section header table entry count */ 44 e_shstrndx uint16 /* Section header string table index */ 45 } 46 47 type elfPhdr struct { 48 p_type uint32 /* Segment type */ 49 p_offset uint32 /* Segment file offset */ 50 p_vaddr uint32 /* Segment virtual address */ 51 p_paddr uint32 /* Segment physical address */ 52 p_filesz uint32 /* Segment size in file */ 53 p_memsz uint32 /* Segment size in memory */ 54 p_flags uint32 /* Segment flags */ 55 p_align uint32 /* Segment alignment */ 56 } 57 58 type elfShdr struct { 59 sh_name uint32 /* Section name (string tbl index) */ 60 sh_type uint32 /* Section type */ 61 sh_flags uint32 /* Section flags */ 62 sh_addr uint32 /* Section virtual addr at execution */ 63 sh_offset uint32 /* Section file offset */ 64 sh_size uint32 /* Section size in bytes */ 65 sh_link uint32 /* Link to another section */ 66 sh_info uint32 /* Additional section information */ 67 sh_addralign uint32 /* Section alignment */ 68 sh_entsize uint32 /* Entry size if section holds table */ 69 } 70 71 type elfDyn struct { 72 d_tag int32 /* Dynamic entry type */ 73 d_val uint32 /* Integer value */ 74 } 75 76 type elfVerdaux struct { 77 vda_name uint32 /* Version or dependency names */ 78 vda_next uint32 /* Offset in bytes to next verdaux entry */ 79 } 80