ld

package standard library
go1.9beta1 Latest Latest
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 Go to latest Published: Jun 14, 2017 License: BSD-3-Clause Imports: 35 Imported by: 0

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Index

Constants

View Source 
const (
	SARMAG  = 8
	SAR_HDR = 16 + 44
)
View Source 
const (
	MaxKeySize = 128
	MaxValSize = 128
	BucketSize = 8
)

synthesizemaptypes is way too closely married to runtime/hashmap.c

View Source 
const (
	LINE_BASE   = -4
	LINE_RANGE  = 10
	PC_RANGE    = (255 - OPCODE_BASE) / LINE_RANGE
	OPCODE_BASE = 10
)

* Generate a sequence of opcodes that is as short as possible. * See section 6.2.5

View Source 
const (
	EI_MAG0              = 0
	EI_MAG1              = 1
	EI_MAG2              = 2
	EI_MAG3              = 3
	EI_CLASS             = 4
	EI_DATA              = 5
	EI_VERSION           = 6
	EI_OSABI             = 7
	EI_ABIVERSION        = 8
	OLD_EI_BRAND         = 8
	EI_PAD               = 9
	EI_NIDENT            = 16
	ELFMAG0              = 0x7f
	ELFMAG1              = 'E'
	ELFMAG2              = 'L'
	ELFMAG3              = 'F'
	SELFMAG              = 4
	EV_NONE              = 0
	EV_CURRENT           = 1
	ELFCLASSNONE         = 0
	ELFCLASS32           = 1
	ELFCLASS64           = 2
	ELFDATANONE          = 0
	ELFDATA2LSB          = 1
	ELFDATA2MSB          = 2
	ELFOSABI_NONE        = 0
	ELFOSABI_HPUX        = 1
	ELFOSABI_NETBSD      = 2
	ELFOSABI_LINUX       = 3
	ELFOSABI_HURD        = 4
	ELFOSABI_86OPEN      = 5
	ELFOSABI_SOLARIS     = 6
	ELFOSABI_AIX         = 7
	ELFOSABI_IRIX        = 8
	ELFOSABI_FREEBSD     = 9
	ELFOSABI_TRU64       = 10
	ELFOSABI_MODESTO     = 11
	ELFOSABI_OPENBSD     = 12
	ELFOSABI_OPENVMS     = 13
	ELFOSABI_NSK         = 14
	ELFOSABI_ARM         = 97
	ELFOSABI_STANDALONE  = 255
	ELFOSABI_SYSV        = ELFOSABI_NONE
	ELFOSABI_MONTEREY    = ELFOSABI_AIX
	ET_NONE              = 0
	ET_REL               = 1
	ET_EXEC              = 2
	ET_DYN               = 3
	ET_CORE              = 4
	ET_LOOS              = 0xfe00
	ET_HIOS              = 0xfeff
	ET_LOPROC            = 0xff00
	ET_HIPROC            = 0xffff
	EM_NONE              = 0
	EM_M32               = 1
	EM_SPARC             = 2
	EM_386               = 3
	EM_68K               = 4
	EM_88K               = 5
	EM_860               = 7
	EM_MIPS              = 8
	EM_S370              = 9
	EM_MIPS_RS3_LE       = 10
	EM_PARISC            = 15
	EM_VPP500            = 17
	EM_SPARC32PLUS       = 18
	EM_960               = 19
	EM_PPC               = 20
	EM_PPC64             = 21
	EM_S390              = 22
	EM_V800              = 36
	EM_FR20              = 37
	EM_RH32              = 38
	EM_RCE               = 39
	EM_ARM               = 40
	EM_SH                = 42
	EM_SPARCV9           = 43
	EM_TRICORE           = 44
	EM_ARC               = 45
	EM_H8_300            = 46
	EM_H8_300H           = 47
	EM_H8S               = 48
	EM_H8_500            = 49
	EM_IA_64             = 50
	EM_MIPS_X            = 51
	EM_COLDFIRE          = 52
	EM_68HC12            = 53
	EM_MMA               = 54
	EM_PCP               = 55
	EM_NCPU              = 56
	EM_NDR1              = 57
	EM_STARCORE          = 58
	EM_ME16              = 59
	EM_ST100             = 60
	EM_TINYJ             = 61
	EM_X86_64            = 62
	EM_AARCH64           = 183
	EM_486               = 6
	EM_MIPS_RS4_BE       = 10
	EM_ALPHA_STD         = 41
	EM_ALPHA             = 0x9026
	SHN_UNDEF            = 0
	SHN_LORESERVE        = 0xff00
	SHN_LOPROC           = 0xff00
	SHN_HIPROC           = 0xff1f
	SHN_LOOS             = 0xff20
	SHN_HIOS             = 0xff3f
	SHN_ABS              = 0xfff1
	SHN_COMMON           = 0xfff2
	SHN_XINDEX           = 0xffff
	SHN_HIRESERVE        = 0xffff
	SHT_NULL             = 0
	SHT_PROGBITS         = 1
	SHT_SYMTAB           = 2
	SHT_STRTAB           = 3
	SHT_RELA             = 4
	SHT_HASH             = 5
	SHT_DYNAMIC          = 6
	SHT_NOTE             = 7
	SHT_NOBITS           = 8
	SHT_REL              = 9
	SHT_SHLIB            = 10
	SHT_DYNSYM           = 11
	SHT_INIT_ARRAY       = 14
	SHT_FINI_ARRAY       = 15
	SHT_PREINIT_ARRAY    = 16
	SHT_GROUP            = 17
	SHT_SYMTAB_SHNDX     = 18
	SHT_LOOS             = 0x60000000
	SHT_HIOS             = 0x6fffffff
	SHT_GNU_VERDEF       = 0x6ffffffd
	SHT_GNU_VERNEED      = 0x6ffffffe
	SHT_GNU_VERSYM       = 0x6fffffff
	SHT_LOPROC           = 0x70000000
	SHT_ARM_ATTRIBUTES   = 0x70000003
	SHT_HIPROC           = 0x7fffffff
	SHT_LOUSER           = 0x80000000
	SHT_HIUSER           = 0xffffffff
	SHF_WRITE            = 0x1
	SHF_ALLOC            = 0x2
	SHF_EXECINSTR        = 0x4
	SHF_MERGE            = 0x10
	SHF_STRINGS          = 0x20
	SHF_INFO_LINK        = 0x40
	SHF_LINK_ORDER       = 0x80
	SHF_OS_NONCONFORMING = 0x100
	SHF_GROUP            = 0x200
	SHF_TLS              = 0x400
	SHF_MASKOS           = 0x0ff00000
	SHF_MASKPROC         = 0xf0000000
	PT_NULL              = 0
	PT_LOAD              = 1
	PT_DYNAMIC           = 2
	PT_INTERP            = 3
	PT_NOTE              = 4
	PT_SHLIB             = 5
	PT_PHDR              = 6
	PT_TLS               = 7
	PT_LOOS              = 0x60000000
	PT_HIOS              = 0x6fffffff
	PT_LOPROC            = 0x70000000
	PT_HIPROC            = 0x7fffffff
	PT_GNU_STACK         = 0x6474e551
	PT_GNU_RELRO         = 0x6474e552
	PT_PAX_FLAGS         = 0x65041580
	PT_SUNWSTACK         = 0x6ffffffb
	PF_X                 = 0x1
	PF_W                 = 0x2
	PF_R                 = 0x4
	PF_MASKOS            = 0x0ff00000
	PF_MASKPROC          = 0xf0000000
	DT_NULL              = 0
	DT_NEEDED            = 1
	DT_PLTRELSZ          = 2
	DT_PLTGOT            = 3
	DT_HASH              = 4
	DT_STRTAB            = 5
	DT_SYMTAB            = 6
	DT_RELA              = 7
	DT_RELASZ            = 8
	DT_RELAENT           = 9
	DT_STRSZ             = 10
	DT_SYMENT            = 11
	DT_INIT              = 12
	DT_FINI              = 13
	DT_SONAME            = 14
	DT_RPATH             = 15
	DT_SYMBOLIC          = 16
	DT_REL               = 17
	DT_RELSZ             = 18
	DT_RELENT            = 19
	DT_PLTREL            = 20
	DT_DEBUG             = 21
	DT_TEXTREL           = 22
	DT_JMPREL            = 23
	DT_BIND_NOW          = 24
	DT_INIT_ARRAY        = 25
	DT_FINI_ARRAY        = 26
	DT_INIT_ARRAYSZ      = 27
	DT_FINI_ARRAYSZ      = 28
	DT_RUNPATH           = 29
	DT_FLAGS             = 30
	DT_ENCODING          = 32
	DT_PREINIT_ARRAY     = 32
	DT_PREINIT_ARRAYSZ   = 33
	DT_LOOS              = 0x6000000d
	DT_HIOS              = 0x6ffff000
	DT_LOPROC            = 0x70000000
	DT_HIPROC            = 0x7fffffff
	DT_VERNEED           = 0x6ffffffe
	DT_VERNEEDNUM        = 0x6fffffff
	DT_VERSYM            = 0x6ffffff0
	DT_PPC64_GLINK       = DT_LOPROC + 0
	DT_PPC64_OPT         = DT_LOPROC + 3
	DF_ORIGIN            = 0x0001
	DF_SYMBOLIC          = 0x0002
	DF_TEXTREL           = 0x0004
	DF_BIND_NOW          = 0x0008
	DF_STATIC_TLS        = 0x0010
	NT_PRSTATUS          = 1
	NT_FPREGSET          = 2
	NT_PRPSINFO          = 3
	STB_LOCAL            = 0
	STB_GLOBAL           = 1
	STB_WEAK             = 2
	STB_LOOS             = 10
	STB_HIOS             = 12
	STB_LOPROC           = 13
	STB_HIPROC           = 15
	STT_NOTYPE           = 0
	STT_OBJECT           = 1
	STT_FUNC             = 2
	STT_SECTION          = 3
	STT_FILE             = 4
	STT_COMMON           = 5
	STT_TLS              = 6
	STT_LOOS             = 10
	STT_HIOS             = 12
	STT_LOPROC           = 13
	STT_HIPROC           = 15
	STV_DEFAULT          = 0x0
	STV_INTERNAL         = 0x1
	STV_HIDDEN           = 0x2
	STV_PROTECTED        = 0x3
	STN_UNDEF            = 0
)
View Source 
const (
	R_X86_64_NONE           = 0
	R_X86_64_64             = 1
	R_X86_64_PC32           = 2
	R_X86_64_GOT32          = 3
	R_X86_64_PLT32          = 4
	R_X86_64_COPY           = 5
	R_X86_64_GLOB_DAT       = 6
	R_X86_64_JMP_SLOT       = 7
	R_X86_64_RELATIVE       = 8
	R_X86_64_GOTPCREL       = 9
	R_X86_64_32             = 10
	R_X86_64_32S            = 11
	R_X86_64_16             = 12
	R_X86_64_PC16           = 13
	R_X86_64_8              = 14
	R_X86_64_PC8            = 15
	R_X86_64_DTPMOD64       = 16
	R_X86_64_DTPOFF64       = 17
	R_X86_64_TPOFF64        = 18
	R_X86_64_TLSGD          = 19
	R_X86_64_TLSLD          = 20
	R_X86_64_DTPOFF32       = 21
	R_X86_64_GOTTPOFF       = 22
	R_X86_64_TPOFF32        = 23
	R_X86_64_PC64           = 24
	R_X86_64_GOTOFF64       = 25
	R_X86_64_GOTPC32        = 26
	R_X86_64_GOT64          = 27
	R_X86_64_GOTPCREL64     = 28
	R_X86_64_GOTPC64        = 29
	R_X86_64_GOTPLT64       = 30
	R_X86_64_PLTOFF64       = 31
	R_X86_64_SIZE32         = 32
	R_X86_64_SIZE64         = 33
	R_X86_64_GOTPC32_TLSDEC = 34
	R_X86_64_TLSDESC_CALL   = 35
	R_X86_64_TLSDESC        = 36
	R_X86_64_IRELATIVE      = 37
	R_X86_64_PC32_BND       = 40
	R_X86_64_GOTPCRELX      = 41
	R_X86_64_REX_GOTPCRELX  = 42

	R_AARCH64_ABS64                       = 257
	R_AARCH64_ABS32                       = 258
	R_AARCH64_CALL26                      = 283
	R_AARCH64_ADR_PREL_PG_HI21            = 275
	R_AARCH64_ADD_ABS_LO12_NC             = 277
	R_AARCH64_LDST8_ABS_LO12_NC           = 278
	R_AARCH64_LDST16_ABS_LO12_NC          = 284
	R_AARCH64_LDST32_ABS_LO12_NC          = 285
	R_AARCH64_LDST64_ABS_LO12_NC          = 286
	R_AARCH64_ADR_GOT_PAGE                = 311
	R_AARCH64_LD64_GOT_LO12_NC            = 312
	R_AARCH64_TLSIE_ADR_GOTTPREL_PAGE21   = 541
	R_AARCH64_TLSIE_LD64_GOTTPREL_LO12_NC = 542
	R_AARCH64_TLSLE_MOVW_TPREL_G0         = 547

	R_ALPHA_NONE           = 0
	R_ALPHA_REFLONG        = 1
	R_ALPHA_REFQUAD        = 2
	R_ALPHA_GPREL32        = 3
	R_ALPHA_LITERAL        = 4
	R_ALPHA_LITUSE         = 5
	R_ALPHA_GPDISP         = 6
	R_ALPHA_BRADDR         = 7
	R_ALPHA_HINT           = 8
	R_ALPHA_SREL16         = 9
	R_ALPHA_SREL32         = 10
	R_ALPHA_SREL64         = 11
	R_ALPHA_OP_PUSH        = 12
	R_ALPHA_OP_STORE       = 13
	R_ALPHA_OP_PSUB        = 14
	R_ALPHA_OP_PRSHIFT     = 15
	R_ALPHA_GPVALUE        = 16
	R_ALPHA_GPRELHIGH      = 17
	R_ALPHA_GPRELLOW       = 18
	R_ALPHA_IMMED_GP_16    = 19
	R_ALPHA_IMMED_GP_HI32  = 20
	R_ALPHA_IMMED_SCN_HI32 = 21
	R_ALPHA_IMMED_BR_HI32  = 22
	R_ALPHA_IMMED_LO32     = 23
	R_ALPHA_COPY           = 24
	R_ALPHA_GLOB_DAT       = 25
	R_ALPHA_JMP_SLOT       = 26
	R_ALPHA_RELATIVE       = 27

	R_ARM_NONE          = 0
	R_ARM_PC24          = 1
	R_ARM_ABS32         = 2
	R_ARM_REL32         = 3
	R_ARM_PC13          = 4
	R_ARM_ABS16         = 5
	R_ARM_ABS12         = 6
	R_ARM_THM_ABS5      = 7
	R_ARM_ABS8          = 8
	R_ARM_SBREL32       = 9
	R_ARM_THM_PC22      = 10
	R_ARM_THM_PC8       = 11
	R_ARM_AMP_VCALL9    = 12
	R_ARM_SWI24         = 13
	R_ARM_THM_SWI8      = 14
	R_ARM_XPC25         = 15
	R_ARM_THM_XPC22     = 16
	R_ARM_COPY          = 20
	R_ARM_GLOB_DAT      = 21
	R_ARM_JUMP_SLOT     = 22
	R_ARM_RELATIVE      = 23
	R_ARM_GOTOFF        = 24
	R_ARM_GOTPC         = 25
	R_ARM_GOT32         = 26
	R_ARM_PLT32         = 27
	R_ARM_CALL          = 28
	R_ARM_JUMP24        = 29
	R_ARM_V4BX          = 40
	R_ARM_GOT_PREL      = 96
	R_ARM_GNU_VTENTRY   = 100
	R_ARM_GNU_VTINHERIT = 101
	R_ARM_TLS_IE32      = 107
	R_ARM_TLS_LE32      = 108
	R_ARM_RSBREL32      = 250
	R_ARM_THM_RPC22     = 251
	R_ARM_RREL32        = 252
	R_ARM_RABS32        = 253
	R_ARM_RPC24         = 254
	R_ARM_RBASE         = 255

	R_386_NONE          = 0
	R_386_32            = 1
	R_386_PC32          = 2
	R_386_GOT32         = 3
	R_386_PLT32         = 4
	R_386_COPY          = 5
	R_386_GLOB_DAT      = 6
	R_386_JMP_SLOT      = 7
	R_386_RELATIVE      = 8
	R_386_GOTOFF        = 9
	R_386_GOTPC         = 10
	R_386_TLS_TPOFF     = 14
	R_386_TLS_IE        = 15
	R_386_TLS_GOTIE     = 16
	R_386_TLS_LE        = 17
	R_386_TLS_GD        = 18
	R_386_TLS_LDM       = 19
	R_386_TLS_GD_32     = 24
	R_386_TLS_GD_PUSH   = 25
	R_386_TLS_GD_CALL   = 26
	R_386_TLS_GD_POP    = 27
	R_386_TLS_LDM_32    = 28
	R_386_TLS_LDM_PUSH  = 29
	R_386_TLS_LDM_CALL  = 30
	R_386_TLS_LDM_POP   = 31
	R_386_TLS_LDO_32    = 32
	R_386_TLS_IE_32     = 33
	R_386_TLS_LE_32     = 34
	R_386_TLS_DTPMOD32  = 35
	R_386_TLS_DTPOFF32  = 36
	R_386_TLS_TPOFF32   = 37
	R_386_TLS_GOTDESC   = 39
	R_386_TLS_DESC_CALL = 40
	R_386_TLS_DESC      = 41
	R_386_IRELATIVE     = 42
	R_386_GOT32X        = 43

	R_MIPS_NONE            = 0
	R_MIPS_16              = 1
	R_MIPS_32              = 2
	R_MIPS_REL32           = 3
	R_MIPS_26              = 4
	R_MIPS_HI16            = 5
	R_MIPS_LO16            = 6
	R_MIPS_GPREL16         = 7
	R_MIPS_LITERAL         = 8
	R_MIPS_GOT16           = 9
	R_MIPS_PC16            = 10
	R_MIPS_CALL16          = 11
	R_MIPS_GPREL32         = 12
	R_MIPS_SHIFT5          = 16
	R_MIPS_SHIFT6          = 17
	R_MIPS_64              = 18
	R_MIPS_GOT_DISP        = 19
	R_MIPS_GOT_PAGE        = 20
	R_MIPS_GOT_OFST        = 21
	R_MIPS_GOT_HI16        = 22
	R_MIPS_GOT_LO16        = 23
	R_MIPS_SUB             = 24
	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
	R_MIPS_ADD_IMMEDIATE   = 34
	R_MIPS_PJUMP           = 35
	R_MIPS_RELGOT          = 36
	R_MIPS_JALR            = 37
	R_MIPS_TLS_DTPMOD32    = 38
	R_MIPS_TLS_DTPREL32    = 39
	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
	R_MIPS_TLS_TPREL_HI16  = 49
	R_MIPS_TLS_TPREL_LO16  = 50

	R_PPC_NONE            = 0
	R_PPC_ADDR32          = 1
	R_PPC_ADDR24          = 2
	R_PPC_ADDR16          = 3
	R_PPC_ADDR16_LO       = 4
	R_PPC_ADDR16_HI       = 5
	R_PPC_ADDR16_HA       = 6
	R_PPC_ADDR14          = 7
	R_PPC_ADDR14_BRTAKEN  = 8
	R_PPC_ADDR14_BRNTAKEN = 9
	R_PPC_REL24           = 10
	R_PPC_REL14           = 11
	R_PPC_REL14_BRTAKEN   = 12
	R_PPC_REL14_BRNTAKEN  = 13
	R_PPC_GOT16           = 14
	R_PPC_GOT16_LO        = 15
	R_PPC_GOT16_HI        = 16
	R_PPC_GOT16_HA        = 17
	R_PPC_PLTREL24        = 18
	R_PPC_COPY            = 19
	R_PPC_GLOB_DAT        = 20
	R_PPC_JMP_SLOT        = 21
	R_PPC_RELATIVE        = 22
	R_PPC_LOCAL24PC       = 23
	R_PPC_UADDR32         = 24
	R_PPC_UADDR16         = 25
	R_PPC_REL32           = 26
	R_PPC_PLT32           = 27
	R_PPC_PLTREL32        = 28
	R_PPC_PLT16_LO        = 29
	R_PPC_PLT16_HI        = 30
	R_PPC_PLT16_HA        = 31
	R_PPC_SDAREL16        = 32
	R_PPC_SECTOFF         = 33
	R_PPC_SECTOFF_LO      = 34
	R_PPC_SECTOFF_HI      = 35
	R_PPC_SECTOFF_HA      = 36
	R_PPC_TLS             = 67
	R_PPC_DTPMOD32        = 68
	R_PPC_TPREL16         = 69
	R_PPC_TPREL16_LO      = 70
	R_PPC_TPREL16_HI      = 71
	R_PPC_TPREL16_HA      = 72
	R_PPC_TPREL32         = 73
	R_PPC_DTPREL16        = 74
	R_PPC_DTPREL16_LO     = 75
	R_PPC_DTPREL16_HI     = 76
	R_PPC_DTPREL16_HA     = 77
	R_PPC_DTPREL32        = 78
	R_PPC_GOT_TLSGD16     = 79
	R_PPC_GOT_TLSGD16_LO  = 80
	R_PPC_GOT_TLSGD16_HI  = 81
	R_PPC_GOT_TLSGD16_HA  = 82
	R_PPC_GOT_TLSLD16     = 83
	R_PPC_GOT_TLSLD16_LO  = 84
	R_PPC_GOT_TLSLD16_HI  = 85
	R_PPC_GOT_TLSLD16_HA  = 86
	R_PPC_GOT_TPREL16     = 87
	R_PPC_GOT_TPREL16_LO  = 88
	R_PPC_GOT_TPREL16_HI  = 89
	R_PPC_GOT_TPREL16_HA  = 90
	R_PPC_EMB_NADDR32     = 101
	R_PPC_EMB_NADDR16     = 102
	R_PPC_EMB_NADDR16_LO  = 103
	R_PPC_EMB_NADDR16_HI  = 104
	R_PPC_EMB_NADDR16_HA  = 105
	R_PPC_EMB_SDAI16      = 106
	R_PPC_EMB_SDA2I16     = 107
	R_PPC_EMB_SDA2REL     = 108
	R_PPC_EMB_SDA21       = 109
	R_PPC_EMB_MRKREF      = 110
	R_PPC_EMB_RELSEC16    = 111
	R_PPC_EMB_RELST_LO    = 112
	R_PPC_EMB_RELST_HI    = 113
	R_PPC_EMB_RELST_HA    = 114
	R_PPC_EMB_BIT_FLD     = 115
	R_PPC_EMB_RELSDA      = 116

	R_PPC64_ADDR32            = R_PPC_ADDR32
	R_PPC64_ADDR16_LO         = R_PPC_ADDR16_LO
	R_PPC64_ADDR16_HA         = R_PPC_ADDR16_HA
	R_PPC64_REL24             = R_PPC_REL24
	R_PPC64_GOT16_HA          = R_PPC_GOT16_HA
	R_PPC64_JMP_SLOT          = R_PPC_JMP_SLOT
	R_PPC64_TPREL16           = R_PPC_TPREL16
	R_PPC64_ADDR64            = 38
	R_PPC64_TOC16             = 47
	R_PPC64_TOC16_LO          = 48
	R_PPC64_TOC16_HI          = 49
	R_PPC64_TOC16_HA          = 50
	R_PPC64_ADDR16_LO_DS      = 57
	R_PPC64_GOT16_LO_DS       = 59
	R_PPC64_TOC16_DS          = 63
	R_PPC64_TOC16_LO_DS       = 64
	R_PPC64_TLS               = 67
	R_PPC64_GOT_TPREL16_LO_DS = 88
	R_PPC64_GOT_TPREL16_HA    = 90
	R_PPC64_REL16_LO          = 250
	R_PPC64_REL16_HI          = 251
	R_PPC64_REL16_HA          = 252

	R_SPARC_NONE     = 0
	R_SPARC_8        = 1
	R_SPARC_16       = 2
	R_SPARC_32       = 3
	R_SPARC_DISP8    = 4
	R_SPARC_DISP16   = 5
	R_SPARC_DISP32   = 6
	R_SPARC_WDISP30  = 7
	R_SPARC_WDISP22  = 8
	R_SPARC_HI22     = 9
	R_SPARC_22       = 10
	R_SPARC_13       = 11
	R_SPARC_LO10     = 12
	R_SPARC_GOT10    = 13
	R_SPARC_GOT13    = 14
	R_SPARC_GOT22    = 15
	R_SPARC_PC10     = 16
	R_SPARC_PC22     = 17
	R_SPARC_WPLT30   = 18
	R_SPARC_COPY     = 19
	R_SPARC_GLOB_DAT = 20
	R_SPARC_JMP_SLOT = 21
	R_SPARC_RELATIVE = 22
	R_SPARC_UA32     = 23
	R_SPARC_PLT32    = 24
	R_SPARC_HIPLT22  = 25
	R_SPARC_LOPLT10  = 26
	R_SPARC_PCPLT32  = 27
	R_SPARC_PCPLT22  = 28
	R_SPARC_PCPLT10  = 29
	R_SPARC_10       = 30
	R_SPARC_11       = 31
	R_SPARC_64       = 32
	R_SPARC_OLO10    = 33
	R_SPARC_HH22     = 34
	R_SPARC_HM10     = 35
	R_SPARC_LM22     = 36
	R_SPARC_PC_HH22  = 37
	R_SPARC_PC_HM10  = 38
	R_SPARC_PC_LM22  = 39
	R_SPARC_WDISP16  = 40
	R_SPARC_WDISP19  = 41
	R_SPARC_GLOB_JMP = 42
	R_SPARC_7        = 43
	R_SPARC_5        = 44
	R_SPARC_6        = 45
	R_SPARC_DISP64   = 46
	R_SPARC_PLT64    = 47
	R_SPARC_HIX22    = 48
	R_SPARC_LOX10    = 49
	R_SPARC_H44      = 50
	R_SPARC_M44      = 51
	R_SPARC_L44      = 52
	R_SPARC_REGISTER = 53
	R_SPARC_UA64     = 54
	R_SPARC_UA16     = 55

	R_390_NONE        = 0
	R_390_8           = 1
	R_390_12          = 2
	R_390_16          = 3
	R_390_32          = 4
	R_390_PC32        = 5
	R_390_GOT12       = 6
	R_390_GOT32       = 7
	R_390_PLT32       = 8
	R_390_COPY        = 9
	R_390_GLOB_DAT    = 10
	R_390_JMP_SLOT    = 11
	R_390_RELATIVE    = 12
	R_390_GOTOFF      = 13
	R_390_GOTPC       = 14
	R_390_GOT16       = 15
	R_390_PC16        = 16
	R_390_PC16DBL     = 17
	R_390_PLT16DBL    = 18
	R_390_PC32DBL     = 19
	R_390_PLT32DBL    = 20
	R_390_GOTPCDBL    = 21
	R_390_64          = 22
	R_390_PC64        = 23
	R_390_GOT64       = 24
	R_390_PLT64       = 25
	R_390_GOTENT      = 26
	R_390_GOTOFF16    = 27
	R_390_GOTOFF64    = 28
	R_390_GOTPLT12    = 29
	R_390_GOTPLT16    = 30
	R_390_GOTPLT32    = 31
	R_390_GOTPLT64    = 32
	R_390_GOTPLTENT   = 33
	R_390_GOTPLTOFF16 = 34
	R_390_GOTPLTOFF32 = 35
	R_390_GOTPLTOFF64 = 36
	R_390_TLS_LOAD    = 37
	R_390_TLS_GDCALL  = 38
	R_390_TLS_LDCALL  = 39
	R_390_TLS_GD32    = 40
	R_390_TLS_GD64    = 41
	R_390_TLS_GOTIE12 = 42
	R_390_TLS_GOTIE32 = 43
	R_390_TLS_GOTIE64 = 44
	R_390_TLS_LDM32   = 45
	R_390_TLS_LDM64   = 46
	R_390_TLS_IE32    = 47
	R_390_TLS_IE64    = 48
	R_390_TLS_IEENT   = 49
	R_390_TLS_LE32    = 50
	R_390_TLS_LE64    = 51
	R_390_TLS_LDO32   = 52
	R_390_TLS_LDO64   = 53
	R_390_TLS_DTPMOD  = 54
	R_390_TLS_DTPOFF  = 55
	R_390_TLS_TPOFF   = 56
	R_390_20          = 57
	R_390_GOT20       = 58
	R_390_GOTPLT20    = 59
	R_390_TLS_GOTIE20 = 60

	ARM_MAGIC_TRAMP_NUMBER = 0x5c000003
)

* Relocation types.

View Source 
const (
	ELF64HDRSIZE  = 64
	ELF64PHDRSIZE = 56
	ELF64SHDRSIZE = 64
	ELF64RELSIZE  = 16
	ELF64RELASIZE = 24
	ELF64SYMSIZE  = 24
	ELF32HDRSIZE  = 52
	ELF32PHDRSIZE = 32
	ELF32SHDRSIZE = 40
	ELF32SYMSIZE  = 16
	ELF32RELSIZE  = 8
)

* Go linker interface

View Source 
const (
	ELF_NOTE_NETBSD_NAMESZ  = 7
	ELF_NOTE_NETBSD_DESCSZ  = 4
	ELF_NOTE_NETBSD_TAG     = 1
	ELF_NOTE_NETBSD_VERSION = 599000000 /* NetBSD 5.99 */
)

NetBSD Signature (as per sys/exec_elf.h)

View Source 
const (
	ELF_NOTE_OPENBSD_NAMESZ  = 8
	ELF_NOTE_OPENBSD_DESCSZ  = 4
	ELF_NOTE_OPENBSD_TAG     = 1
	ELF_NOTE_OPENBSD_VERSION = 0
)

OpenBSD Signature

View Source 
const (
	ELF_NOTE_BUILDINFO_NAMESZ = 4
	ELF_NOTE_BUILDINFO_TAG    = 3
)

Build info note

View Source 
const (
	ELF_NOTE_GOPKGLIST_TAG = 1
	ELF_NOTE_GOABIHASH_TAG = 2
	ELF_NOTE_GODEPS_TAG    = 3
	ELF_NOTE_GOBUILDID_TAG = 4
)

Go specific notes

View Source 
const (
	ElfClassNone = 0
	ElfClass32   = 1
	ElfClass64   = 2
)

Derived from Plan 9 from User Space's src/libmach/elf.h, elf.c http://code.swtch.com/plan9port/src/tip/src/libmach/ 

Copyright © 2004 Russ Cox.
Portions Copyright © 2008-2010 Google Inc.
Portions Copyright © 2010 The Go Authors.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

View Source 
const (
	ElfDataNone = 0
	ElfDataLsb  = 1
	ElfDataMsb  = 2
)
View Source 
const (
	ElfTypeNone         = 0
	ElfTypeRelocatable  = 1
	ElfTypeExecutable   = 2
	ElfTypeSharedObject = 3
	ElfTypeCore         = 4
)
View Source 
const (
	ElfMachNone        = 0
	ElfMach32100       = 1
	ElfMachSparc       = 2
	ElfMach386         = 3
	ElfMach68000       = 4
	ElfMach88000       = 5
	ElfMach486         = 6
	ElfMach860         = 7
	ElfMachMips        = 8
	ElfMachS370        = 9
	ElfMachMipsLe      = 10
	ElfMachParisc      = 15
	ElfMachVpp500      = 17
	ElfMachSparc32Plus = 18
	ElfMach960         = 19
	ElfMachPower       = 20
	ElfMachPower64     = 21
	ElfMachS390        = 22
	ElfMachV800        = 36
	ElfMachFr20        = 37
	ElfMachRh32        = 38
	ElfMachRce         = 39
	ElfMachArm         = 40
	ElfMachAlpha       = 41
	ElfMachSH          = 42
	ElfMachSparc9      = 43
	ElfMachAmd64       = 62
	ElfMachArm64       = 183
)
View Source 
const (
	ElfAbiNone     = 0
	ElfAbiSystemV  = 0
	ElfAbiHPUX     = 1
	ElfAbiNetBSD   = 2
	ElfAbiLinux    = 3
	ElfAbiSolaris  = 6
	ElfAbiAix      = 7
	ElfAbiIrix     = 8
	ElfAbiFreeBSD  = 9
	ElfAbiTru64    = 10
	ElfAbiModesto  = 11
	ElfAbiOpenBSD  = 12
	ElfAbiARM      = 97
	ElfAbiEmbedded = 255
)
View Source 
const (
	ElfSectNone      = 0
	ElfSectProgbits  = 1
	ElfSectSymtab    = 2
	ElfSectStrtab    = 3
	ElfSectRela      = 4
	ElfSectHash      = 5
	ElfSectDynamic   = 6
	ElfSectNote      = 7
	ElfSectNobits    = 8
	ElfSectRel       = 9
	ElfSectShlib     = 10
	ElfSectDynsym    = 11
	ElfSectFlagWrite = 0x1
	ElfSectFlagAlloc = 0x2
	ElfSectFlagExec  = 0x4
)
View Source 
const (
	ElfSymBindLocal  = 0
	ElfSymBindGlobal = 1
	ElfSymBindWeak   = 2
)
View Source 
const (
	ElfSymTypeNone    = 0
	ElfSymTypeObject  = 1
	ElfSymTypeFunc    = 2
	ElfSymTypeSection = 3
	ElfSymTypeFile    = 4
	ElfSymTypeCommon  = 5
	ElfSymTypeTLS     = 6
)
View Source 
const (
	ElfSymShnNone   = 0
	ElfSymShnAbs    = 0xFFF1
	ElfSymShnCommon = 0xFFF2
)
View Source 
const (
	ElfProgNone      = 0
	ElfProgLoad      = 1
	ElfProgDynamic   = 2
	ElfProgInterp    = 3
	ElfProgNote      = 4
	ElfProgShlib     = 5
	ElfProgPhdr      = 6
	ElfProgFlagExec  = 0x1
	ElfProgFlagWrite = 0x2
	ElfProgFlagRead  = 0x4
)
View Source 
const (
	ElfNotePrStatus     = 1
	ElfNotePrFpreg      = 2
	ElfNotePrPsinfo     = 3
	ElfNotePrTaskstruct = 4
	ElfNotePrAuxv       = 6
	ElfNotePrXfpreg     = 0x46e62b7f
)
View Source 
const (
	TagFile               = 1
	TagCPUName            = 4
	TagCPURawName         = 5
	TagCompatibility      = 32
	TagNoDefaults         = 64
	TagAlsoCompatibleWith = 65
	TagABIVFPArgs         = 28
)
View Source 
const (
	N_EXT  = 0x01
	N_TYPE = 0x1e
	N_STAB = 0xe0
)

Derived from Plan 9 from User Space's src/libmach/elf.h, elf.c http://code.swtch.com/plan9port/src/tip/src/libmach/ 

Copyright © 2004 Russ Cox.
Portions Copyright © 2008-2010 Google Inc.
Portions Copyright © 2010 The Go Authors.

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

View Source 
const (
	LdMachoCpuVax         = 1
	LdMachoCpu68000       = 6
	LdMachoCpu386         = 7
	LdMachoCpuAmd64       = 0x1000007
	LdMachoCpuMips        = 8
	LdMachoCpu98000       = 10
	LdMachoCpuHppa        = 11
	LdMachoCpuArm         = 12
	LdMachoCpu88000       = 13
	LdMachoCpuSparc       = 14
	LdMachoCpu860         = 15
	LdMachoCpuAlpha       = 16
	LdMachoCpuPower       = 18
	LdMachoCmdSegment     = 1
	LdMachoCmdSymtab      = 2
	LdMachoCmdSymseg      = 3
	LdMachoCmdThread      = 4
	LdMachoCmdDysymtab    = 11
	LdMachoCmdSegment64   = 25
	LdMachoFileObject     = 1
	LdMachoFileExecutable = 2
	LdMachoFileFvmlib     = 3
	LdMachoFileCore       = 4
	LdMachoFilePreload    = 5
)
View Source 
const (
	// TODO: the Microsoft doco says IMAGE_SYM_DTYPE_ARRAY is 3 (same with IMAGE_SYM_DTYPE_POINTER and IMAGE_SYM_DTYPE_FUNCTION)
	IMAGE_SYM_UNDEFINED              = 0
	IMAGE_SYM_ABSOLUTE               = -1
	IMAGE_SYM_DEBUG                  = -2
	IMAGE_SYM_TYPE_NULL              = 0
	IMAGE_SYM_TYPE_VOID              = 1
	IMAGE_SYM_TYPE_CHAR              = 2
	IMAGE_SYM_TYPE_SHORT             = 3
	IMAGE_SYM_TYPE_INT               = 4
	IMAGE_SYM_TYPE_LONG              = 5
	IMAGE_SYM_TYPE_FLOAT             = 6
	IMAGE_SYM_TYPE_DOUBLE            = 7
	IMAGE_SYM_TYPE_STRUCT            = 8
	IMAGE_SYM_TYPE_UNION             = 9
	IMAGE_SYM_TYPE_ENUM              = 10
	IMAGE_SYM_TYPE_MOE               = 11
	IMAGE_SYM_TYPE_BYTE              = 12
	IMAGE_SYM_TYPE_WORD              = 13
	IMAGE_SYM_TYPE_UINT              = 14
	IMAGE_SYM_TYPE_DWORD             = 15
	IMAGE_SYM_TYPE_PCODE             = 32768
	IMAGE_SYM_DTYPE_NULL             = 0
	IMAGE_SYM_DTYPE_POINTER          = 0x10
	IMAGE_SYM_DTYPE_FUNCTION         = 0x20
	IMAGE_SYM_DTYPE_ARRAY            = 0x30
	IMAGE_SYM_CLASS_END_OF_FUNCTION  = -1
	IMAGE_SYM_CLASS_NULL             = 0
	IMAGE_SYM_CLASS_AUTOMATIC        = 1
	IMAGE_SYM_CLASS_EXTERNAL         = 2
	IMAGE_SYM_CLASS_STATIC           = 3
	IMAGE_SYM_CLASS_REGISTER         = 4
	IMAGE_SYM_CLASS_EXTERNAL_DEF     = 5
	IMAGE_SYM_CLASS_LABEL            = 6
	IMAGE_SYM_CLASS_UNDEFINED_LABEL  = 7
	IMAGE_SYM_CLASS_MEMBER_OF_STRUCT = 8
	IMAGE_SYM_CLASS_ARGUMENT         = 9
	IMAGE_SYM_CLASS_STRUCT_TAG       = 10
	IMAGE_SYM_CLASS_MEMBER_OF_UNION  = 11
	IMAGE_SYM_CLASS_UNION_TAG        = 12
	IMAGE_SYM_CLASS_TYPE_DEFINITION  = 13
	IMAGE_SYM_CLASS_UNDEFINED_STATIC = 14
	IMAGE_SYM_CLASS_ENUM_TAG         = 15
	IMAGE_SYM_CLASS_MEMBER_OF_ENUM   = 16
	IMAGE_SYM_CLASS_REGISTER_PARAM   = 17
	IMAGE_SYM_CLASS_BIT_FIELD        = 18
	IMAGE_SYM_CLASS_FAR_EXTERNAL     = 68 /* Not in PECOFF v8 spec */
	IMAGE_SYM_CLASS_BLOCK            = 100
	IMAGE_SYM_CLASS_FUNCTION         = 101
	IMAGE_SYM_CLASS_END_OF_STRUCT    = 102
	IMAGE_SYM_CLASS_FILE             = 103
	IMAGE_SYM_CLASS_SECTION          = 104
	IMAGE_SYM_CLASS_WEAK_EXTERNAL    = 105
	IMAGE_SYM_CLASS_CLR_TOKEN        = 107
	IMAGE_REL_I386_ABSOLUTE          = 0x0000
	IMAGE_REL_I386_DIR16             = 0x0001
	IMAGE_REL_I386_REL16             = 0x0002
	IMAGE_REL_I386_DIR32             = 0x0006
	IMAGE_REL_I386_DIR32NB           = 0x0007
	IMAGE_REL_I386_SEG12             = 0x0009
	IMAGE_REL_I386_SECTION           = 0x000A
	IMAGE_REL_I386_SECREL            = 0x000B
	IMAGE_REL_I386_TOKEN             = 0x000C
	IMAGE_REL_I386_SECREL7           = 0x000D
	IMAGE_REL_I386_REL32             = 0x0014
	IMAGE_REL_AMD64_ABSOLUTE         = 0x0000
	IMAGE_REL_AMD64_ADDR64           = 0x0001
	IMAGE_REL_AMD64_ADDR32           = 0x0002
	IMAGE_REL_AMD64_ADDR32NB         = 0x0003
	IMAGE_REL_AMD64_REL32            = 0x0004
	IMAGE_REL_AMD64_REL32_1          = 0x0005
	IMAGE_REL_AMD64_REL32_2          = 0x0006
	IMAGE_REL_AMD64_REL32_3          = 0x0007
	IMAGE_REL_AMD64_REL32_4          = 0x0008
	IMAGE_REL_AMD64_REL32_5          = 0x0009
	IMAGE_REL_AMD64_SECTION          = 0x000A
	IMAGE_REL_AMD64_SECREL           = 0x000B
	IMAGE_REL_AMD64_SECREL7          = 0x000C
	IMAGE_REL_AMD64_TOKEN            = 0x000D
	IMAGE_REL_AMD64_SREL32           = 0x000E
	IMAGE_REL_AMD64_PAIR             = 0x000F
	IMAGE_REL_AMD64_SSPAN32          = 0x0010
)
View Source 
const (
	FileObj = 0 + iota
	ArchiveObj
	Pkgdef
)

whence for ldpkg

View Source 
const (
	TextSym      SymbolType = 'T'
	DataSym                 = 'D'
	BSSSym                  = 'B'
	UndefinedSym            = 'U'
	TLSSym                  = 't'
	FileSym                 = 'f'
	FrameSym                = 'm'
	ParamSym                = 'p'
	AutoSym                 = 'a'
)
View Source 
const (
	MACHO_CPU_AMD64               = 1<<24 | 7
	MACHO_CPU_386                 = 7
	MACHO_SUBCPU_X86              = 3
	MACHO_CPU_ARM                 = 12
	MACHO_SUBCPU_ARM              = 0
	MACHO_SUBCPU_ARMV7            = 9
	MACHO_CPU_ARM64               = 1<<24 | 12
	MACHO_SUBCPU_ARM64_ALL        = 0
	MACHO32SYMSIZE                = 12
	MACHO64SYMSIZE                = 16
	MACHO_X86_64_RELOC_UNSIGNED   = 0
	MACHO_X86_64_RELOC_SIGNED     = 1
	MACHO_X86_64_RELOC_BRANCH     = 2
	MACHO_X86_64_RELOC_GOT_LOAD   = 3
	MACHO_X86_64_RELOC_GOT        = 4
	MACHO_X86_64_RELOC_SUBTRACTOR = 5
	MACHO_X86_64_RELOC_SIGNED_1   = 6
	MACHO_X86_64_RELOC_SIGNED_2   = 7
	MACHO_X86_64_RELOC_SIGNED_4   = 8
	MACHO_ARM_RELOC_VANILLA       = 0
	MACHO_ARM_RELOC_PAIR          = 1
	MACHO_ARM_RELOC_SECTDIFF      = 2
	MACHO_ARM_RELOC_BR24          = 5
	MACHO_ARM64_RELOC_UNSIGNED    = 0
	MACHO_ARM64_RELOC_BRANCH26    = 2
	MACHO_ARM64_RELOC_PAGE21      = 3
	MACHO_ARM64_RELOC_PAGEOFF12   = 4
	MACHO_ARM64_RELOC_ADDEND      = 10
	MACHO_GENERIC_RELOC_VANILLA   = 0
	MACHO_FAKE_GOTPCREL           = 100
)
View Source 
const (
	SymKindLocal = 0 + iota
	SymKindExtdef
	SymKindUndef
	NumSymKind
)
View Source 
const (
	LC_ID_DYLIB             = 0xd
	LC_LOAD_DYLINKER        = 0xe
	LC_PREBOUND_DYLIB       = 0x10
	LC_LOAD_WEAK_DYLIB      = 0x18
	LC_UUID                 = 0x1b
	LC_RPATH                = 0x8000001c
	LC_CODE_SIGNATURE       = 0x1d
	LC_SEGMENT_SPLIT_INFO   = 0x1e
	LC_REEXPORT_DYLIB       = 0x8000001f
	LC_ENCRYPTION_INFO      = 0x21
	LC_DYLD_INFO            = 0x22
	LC_DYLD_INFO_ONLY       = 0x80000022
	LC_VERSION_MIN_MACOSX   = 0x24
	LC_VERSION_MIN_IPHONEOS = 0x25
	LC_FUNCTION_STARTS      = 0x26
	LC_MAIN                 = 0x80000028
	LC_DATA_IN_CODE         = 0x29
	LC_SOURCE_VERSION       = 0x2A
	LC_DYLIB_CODE_SIGN_DRS  = 0x2B
	LC_ENCRYPTION_INFO_64   = 0x2C
)
View Source 
const (
	BUCKETSIZE    = 256 * MINFUNC
	SUBBUCKETS    = 16
	SUBBUCKETSIZE = BUCKETSIZE / SUBBUCKETS
	NOIDX         = 0x7fffffff
)
View Source 
const (
	IMAGE_FILE_MACHINE_I386              = 0x14c
	IMAGE_FILE_MACHINE_AMD64             = 0x8664
	IMAGE_FILE_RELOCS_STRIPPED           = 0x0001
	IMAGE_FILE_EXECUTABLE_IMAGE          = 0x0002
	IMAGE_FILE_LINE_NUMS_STRIPPED        = 0x0004
	IMAGE_FILE_LARGE_ADDRESS_AWARE       = 0x0020
	IMAGE_FILE_32BIT_MACHINE             = 0x0100
	IMAGE_FILE_DEBUG_STRIPPED            = 0x0200
	IMAGE_SCN_CNT_CODE                   = 0x00000020
	IMAGE_SCN_CNT_INITIALIZED_DATA       = 0x00000040
	IMAGE_SCN_CNT_UNINITIALIZED_DATA     = 0x00000080
	IMAGE_SCN_MEM_EXECUTE                = 0x20000000
	IMAGE_SCN_MEM_READ                   = 0x40000000
	IMAGE_SCN_MEM_WRITE                  = 0x80000000
	IMAGE_SCN_MEM_DISCARDABLE            = 0x2000000
	IMAGE_SCN_LNK_NRELOC_OVFL            = 0x1000000
	IMAGE_SCN_ALIGN_32BYTES              = 0x600000
	IMAGE_DIRECTORY_ENTRY_EXPORT         = 0
	IMAGE_DIRECTORY_ENTRY_IMPORT         = 1
	IMAGE_DIRECTORY_ENTRY_RESOURCE       = 2
	IMAGE_DIRECTORY_ENTRY_EXCEPTION      = 3
	IMAGE_DIRECTORY_ENTRY_SECURITY       = 4
	IMAGE_DIRECTORY_ENTRY_BASERELOC      = 5
	IMAGE_DIRECTORY_ENTRY_DEBUG          = 6
	IMAGE_DIRECTORY_ENTRY_COPYRIGHT      = 7
	IMAGE_DIRECTORY_ENTRY_ARCHITECTURE   = 7
	IMAGE_DIRECTORY_ENTRY_GLOBALPTR      = 8
	IMAGE_DIRECTORY_ENTRY_TLS            = 9
	IMAGE_DIRECTORY_ENTRY_LOAD_CONFIG    = 10
	IMAGE_DIRECTORY_ENTRY_BOUND_IMPORT   = 11
	IMAGE_DIRECTORY_ENTRY_IAT            = 12
	IMAGE_DIRECTORY_ENTRY_DELAY_IMPORT   = 13
	IMAGE_DIRECTORY_ENTRY_COM_DESCRIPTOR = 14
	IMAGE_SUBSYSTEM_WINDOWS_GUI          = 2
	IMAGE_SUBSYSTEM_WINDOWS_CUI          = 3
)
View Source 
const (
	ARMAG = "!<arch>\n"
)
View Source 
const (
	COMPUNITHEADERSIZE = 4 + 2 + 4 + 1
)

* Walk DWarfDebugInfoEntries, and emit .debug_info

View Source 
const (
	ELFRESERVE = 4096
)

* Total amount of space to reserve at the start of the file * for Header, PHeaders, SHeaders, and interp. * May waste some. * On FreeBSD, cannot be larger than a page.

View Source 
const (
	INITIAL_MACHO_HEADR = 4 * 1024
)

* Total amount of space to reserve at the start of the file * for Header, PHeaders, and SHeaders. * May waste some.

View Source 
const (
	MINFUNC = 16 // minimum size for a function
)
View Source 
const (
	NSECT = 400
)

* We use the 64-bit data structures on both 32- and 64-bit machines * in order to write the code just once. The 64-bit data structure is * written in the 32-bit format on the 32-bit machines.

View Source 
const (
	PEBASE = 0x00400000
)

Variables

View Source 
var (
	Linkmode  LinkMode
	Buildmode BuildMode
)
View Source 
var (
	Iself bool

	Nelfsym int = 1
)
View Source 
var (
	Thearch Arch
	Lcsize  int32

	Spsize  int32
	Symsize int32
)
View Source 
var (
	SysArch *sys.Arch

	Funcalign int

	HEADR    int32
	Headtype objabi.HeadType
)
View Source 
var (
	FlagLinkshared = flag.Bool("linkshared", false, "link against installed Go shared libraries")

	FlagC = flag.Bool("c", false, "dump call graph")
	FlagD = flag.Bool("d", false, "disable dynamic executable")

	FlagS = flag.Bool("s", false, "disable symbol table")

	FlagW = flag.Bool("w", false, "disable DWARF generation")
	Flag8 bool // use 64-bit addresses in symbol table

	FlagDebugTramp = flag.Int("debugtramp", 0, "debug trampolines")

	FlagRound    = flag.Int("R", -1, "set address rounding `quantum`")
	FlagTextAddr = flag.Int64("T", -1, "set text segment `address`")
	FlagDataAddr = flag.Int64("D", -1, "set data segment `address`")
)

Flags used by the linker. The exported flags are used by the architecture-specific packages.

View Source 
var (
	// SectionAlignment must be greater than or equal to FileAlignment.
	// The default is the page size for the architecture.
	PESECTALIGN int64 = 0x1000

	// FileAlignment should be a power of 2 between 512 and 64 K, inclusive.
	// The default is 512. If the SectionAlignment is less than
	// the architecture's page size, then FileAlignment must match SectionAlignment.
	PEFILEALIGN int64 = 2 << 8
)
View Source 
var ELF_NOTE_BUILDINFO_NAME = []byte("GNU\x00")
View Source 
var ELF_NOTE_GO_NAME = []byte("Go\x00\x00")
View Source 
var ELF_NOTE_NETBSD_NAME = []byte("NetBSD\x00")
View Source 
var ELF_NOTE_OPENBSD_NAME = []byte("OpenBSD\x00")
View Source 
var ElfMagic = [4]uint8{0x7F, 'E', 'L', 'F'}
View Source 
var Elfstrdat []byte
View Source 
var PEFILEHEADR int32
View Source 
var PESECTHEADR int32

Functions

func Addaddr 

func Addaddr(ctxt *Link, s *Symbol, t *Symbol) int64

func Addaddrplus 

func Addaddrplus(ctxt *Link, s *Symbol, t *Symbol, add int64) int64

func Addbytes added in go1.7 

func Addbytes(s *Symbol, bytes []byte) int64

func Adddynsym 

func Adddynsym(ctxt *Link, s *Symbol)

func Addpcrelplus 

func Addpcrelplus(ctxt *Link, s *Symbol, t *Symbol, add int64) int64

func Addstring 

func Addstring(s *Symbol, str string) int64

func Adduint16 

func Adduint16(ctxt *Link, s *Symbol, v uint16) int64

func Adduint32 

func Adduint32(ctxt *Link, s *Symbol, v uint32) int64

func Adduint64 

func Adduint64(ctxt *Link, s *Symbol, v uint64) int64

func Adduint8 

func Adduint8(ctxt *Link, s *Symbol, v uint8) int64

func Append16b added in go1.7 

func Append16b(b []byte, v uint16) []byte

func Append16l added in go1.7 

func Append16l(b []byte, v uint16) []byte

func Append32b added in go1.7 

func Append32b(b []byte, v uint32) []byte

func Append32l added in go1.7 

func Append32l(b []byte, v uint32) []byte

func Append64b added in go1.7 

func Append64b(b []byte, v uint64) []byte

func Append64l added in go1.7 

func Append64l(b []byte, v uint64) []byte

func Asmbelf 

func Asmbelf(ctxt *Link, symo int64)

func Asmbelfsetup 

func Asmbelfsetup()

func Asmbmacho 

func Asmbmacho(ctxt *Link)

func Asmbpe 

func Asmbpe(ctxt *Link)

func Asmelfsym 

func Asmelfsym(ctxt *Link)

func Asmplan9sym 

func Asmplan9sym(ctxt *Link)

func AtExit 

func AtExit(f func())

func Be16 

func Be16(b []byte) uint16

func Be32 

func Be32(b []byte) uint32

func Cflush 

func Cflush()

func Codeblk 

func Codeblk(ctxt *Link, addr int64, size int64)

func CodeblkPad added in go1.7 

func CodeblkPad(ctxt *Link, addr int64, size int64, pad []byte)

func Cput 

func Cput(c uint8)

func Cputime added in go1.9 

func Cputime() float64

TODO(josharian): delete. See issue 19865.

func Cseek 

func Cseek(p int64)

func Cwrite 

func Cwrite(p []byte)

func Cwritestring added in go1.7 

func Cwritestring(s string)

func Datblk 

func Datblk(ctxt *Link, addr int64, size int64)
func Domacholink(ctxt *Link) int64

func Dwarfblk added in go1.7 

func Dwarfblk(ctxt *Link, addr int64, size int64)

func ELF32_R_INFO 

func ELF32_R_INFO(sym uint32, type_ uint32) uint32

func ELF32_R_SYM 

func ELF32_R_SYM(info uint32) uint32

func ELF32_R_TYPE 

func ELF32_R_TYPE(info uint32) uint32

func ELF32_ST_BIND 

func ELF32_ST_BIND(info uint8) uint8

func ELF32_ST_INFO 

func ELF32_ST_INFO(bind uint8, type_ uint8) uint8

func ELF32_ST_TYPE 

func ELF32_ST_TYPE(info uint8) uint8

func ELF32_ST_VISIBILITY 

func ELF32_ST_VISIBILITY(oth uint8) uint8

func ELF64_R_INFO 

func ELF64_R_INFO(sym uint32, type_ uint32) uint64

func ELF64_R_SYM 

func ELF64_R_SYM(info uint64) uint32

func ELF64_R_TYPE 

func ELF64_R_TYPE(info uint64) uint32

func ELF64_ST_BIND 

func ELF64_ST_BIND(info uint8) uint8

func ELF64_ST_INFO 

func ELF64_ST_INFO(bind uint8, type_ uint8) uint8

func ELF64_ST_TYPE 

func ELF64_ST_TYPE(info uint8) uint8

func ELF64_ST_VISIBILITY 

func ELF64_ST_VISIBILITY(oth uint8) uint8

func Elfadddynsym 

func Elfadddynsym(ctxt *Link, s *Symbol)

func Elfemitreloc 

func Elfemitreloc(ctxt *Link)

func Elfinit 

func Elfinit(ctxt *Link)

Initialize the global variable that describes the ELF header. It will be updated as we write section and prog headers.

func Elfwritedynent 

func Elfwritedynent(ctxt *Link, s *Symbol, tag int, val uint64)

func Elfwritedynentsymplus 

func Elfwritedynentsymplus(ctxt *Link, s *Symbol, tag int, t *Symbol, add int64)

func Entryvalue 

func Entryvalue(ctxt *Link) int64

func Errorf added in go1.8 

func Errorf(s *Symbol, format string, args ...interface{})

Errorf logs an error message.

If more than 20 errors have been printed, exit with an error.

Logging an error means that on exit cmd/link will delete any output file and return a non-zero error code.

func Exit 

func Exit(code int)

Exit exits with code after executing all atExitFuncs.

func Exitf 

func Exitf(format string, a ...interface{})

Exitf logs an error message then calls Exit(2).

func Le16 

func Le16(b []byte) uint16

func Le32 

func Le32(b []byte) uint32

func Le64 

func Le64(b []byte) uint64

func Lflag 

func Lflag(ctxt *Link, arg string)

func LoadObjFile added in go1.7 

func LoadObjFile(ctxt *Link, f *bio.Reader, lib *Library, length int64, pn string)

func Lputb 

func Lputb(l uint32)

func Lputl 

func Lputl(l uint32)

func Machoadddynlib 

func Machoadddynlib(lib string)

func Machoemitreloc 

func Machoemitreloc(ctxt *Link)

func Machoinit 

func Machoinit()

func Main added in go1.8 

func Main()

Main is the main entry point for the linker code.

func Peinit 

func Peinit(ctxt *Link)

func Rnd 

func Rnd(v int64, r int64) int64

func Symaddr 

func Symaddr(s *Symbol) int64

func Symgrow 

func Symgrow(s *Symbol, siz int64)

func UseRelro added in go1.6 

func UseRelro() bool

UseRelro returns whether to make use of "read only relocations" aka relro.

func Vputb 

func Vputb(v uint64)

func Vputl 

func Vputl(v uint64)

func Wputb 

func Wputb(w uint16)

func Wputl 

func Wputl(w uint16)

Types

type ArHdr 

type ArHdr struct {
	// contains filtered or unexported fields
}

type Arch 

type Arch struct {
	Funcalign        int
	Maxalign         int
	Minalign         int
	Dwarfregsp       int
	Dwarfreglr       int
	Linuxdynld       string
	Freebsddynld     string
	Netbsddynld      string
	Openbsddynld     string
	Dragonflydynld   string
	Solarisdynld     string
	Adddynrel        func(*Link, *Symbol, *Reloc) bool
	Archinit         func(*Link)
	Archreloc        func(*Link, *Reloc, *Symbol, *int64) int
	Archrelocvariant func(*Link, *Reloc, *Symbol, int64) int64
	Trampoline       func(*Link, *Reloc, *Symbol)
	Asmb             func(*Link)
	Elfreloc1        func(*Link, *Reloc, int64) int
	Elfsetupplt      func(*Link)
	Gentext          func(*Link)
	Machoreloc1      func(*Symbol, *Reloc, int64) int
	PEreloc1         func(*Symbol, *Reloc, int64) bool
	Wput             func(uint16)
	Lput             func(uint32)
	Vput             func(uint64)
	Append16         func(b []byte, v uint16) []byte
	Append32         func(b []byte, v uint32) []byte
	Append64         func(b []byte, v uint64) []byte

	// TLSIEtoLE converts a TLS Initial Executable relocation to
	// a TLS Local Executable relocation.
	//
	// This is possible when a TLS IE relocation refers to a local
	// symbol in an executable, which is typical when internally
	// linking PIE binaries.
	TLSIEtoLE func(s *Symbol, off, size int)
}

type Attribute added in go1.7 

type Attribute int16

Attribute is a set of common symbol attributes. 

const (
	// AttrDuplicateOK marks a symbol that can be present in multiple object
	// files.
	AttrDuplicateOK Attribute = 1 << iota
	// AttrExternal marks function symbols loaded from host object files.
	AttrExternal
	// AttrNoSplit marks functions that cannot split the stack; the linker
	// cares because it checks that there are no call chains of nosplit
	// functions that require more than StackLimit bytes (see
	// lib.go:dostkcheck)
	AttrNoSplit
	// AttrReachable marks symbols that are transitively referenced from the
	// entry points. Unreachable symbols are not written to the output.
	AttrReachable
	// AttrCgoExportDynamic and AttrCgoExportStatic mark symbols referenced
	// by directives written by cgo (in response to //export directives in
	// the source).
	AttrCgoExportDynamic
	AttrCgoExportStatic
	// AttrSpecial marks symbols that do not have their address (i.e. Value)
	// computed by the usual mechanism of data.go:dodata() &
	// data.go:address().
	AttrSpecial
	// AttrStackCheck is used by dostkcheck to only check each NoSplit
	// function's stack usage once.
	AttrStackCheck
	// AttrNotInSymbolTable marks symbols that are not written to the symbol table.
	AttrNotInSymbolTable
	// AttrOnList marks symbols that are on some list (such as the list of
	// all text symbols, or one of the lists of data symbols) and is
	// consulted to avoid bugs where a symbol is put on a list twice.
	AttrOnList
	// AttrLocal marks symbols that are only visible within the module
	// (exectuable or shared library) being linked. Only relevant when
	// dynamically linking Go code.
	AttrLocal
	// AttrReflectMethod marks certain methods from the reflect package that
	// can be used to call arbitrary methods. If no symbol with this bit set
	// is marked as reachable, more dead code elimination can be done.
	AttrReflectMethod
	// AttrMakeTypelink Amarks types that should be added to the typelink
	// table. See typelinks.go:typelinks().
	AttrMakeTypelink
	// AttrShared marks symbols compiled with the -shared option.
	AttrShared
)

func (Attribute) CgoExport added in go1.7 

func (a Attribute) CgoExport() bool

func (Attribute) CgoExportDynamic added in go1.7 

func (a Attribute) CgoExportDynamic() bool

func (Attribute) CgoExportStatic added in go1.7 

func (a Attribute) CgoExportStatic() bool

func (Attribute) DuplicateOK added in go1.7 

func (a Attribute) DuplicateOK() bool

func (Attribute) External added in go1.7 

func (a Attribute) External() bool

func (Attribute) Local added in go1.7 

func (a Attribute) Local() bool
func (a Attribute) MakeTypelink() bool

func (Attribute) NoSplit added in go1.7 

func (a Attribute) NoSplit() bool

func (Attribute) NotInSymbolTable added in go1.9 

func (a Attribute) NotInSymbolTable() bool

func (Attribute) OnList added in go1.7 

func (a Attribute) OnList() bool

func (Attribute) Reachable added in go1.7 

func (a Attribute) Reachable() bool

func (Attribute) ReflectMethod added in go1.7 

func (a Attribute) ReflectMethod() bool

func (*Attribute) Set added in go1.7 

func (a *Attribute) Set(flag Attribute, value bool)

func (Attribute) Shared added in go1.9 

func (a Attribute) Shared() bool

func (Attribute) Special added in go1.7 

func (a Attribute) Special() bool

func (Attribute) StackCheck added in go1.7 

func (a Attribute) StackCheck() bool

type Auto 

type Auto struct {
	Asym    *Symbol
	Gotype  *Symbol
	Aoffset int32
	Name    int16
}

type BuildMode 

type BuildMode uint8

A BuildMode indicates the sort of object we are building.

Possible build modes are the same as those for the -buildmode flag in cmd/go, and are documented in 'go help buildmode'. 

const (
	BuildmodeUnset BuildMode = iota
	BuildmodeExe
	BuildmodePIE
	BuildmodeCArchive
	BuildmodeCShared
	BuildmodeShared
	BuildmodePlugin
)

func (*BuildMode) Set 

func (mode *BuildMode) Set(s string) error

func (*BuildMode) String 

func (mode *BuildMode) String() string

type Dll 

type Dll struct {
	// contains filtered or unexported fields
}

type ElfEhdr 

type ElfEhdr struct {
	// contains filtered or unexported fields
}

* ELF header.

type ElfHdrBytes 

type ElfHdrBytes struct {
	Ident     [16]uint8
	Type      [2]uint8
	Machine   [2]uint8
	Version   [4]uint8
	Entry     [4]uint8
	Phoff     [4]uint8
	Shoff     [4]uint8
	Flags     [4]uint8
	Ehsize    [2]uint8
	Phentsize [2]uint8
	Phnum     [2]uint8
	Shentsize [2]uint8
	Shnum     [2]uint8
	Shstrndx  [2]uint8
}

type ElfHdrBytes64 

type ElfHdrBytes64 struct {
	Ident     [16]uint8
	Type      [2]uint8
	Machine   [2]uint8
	Version   [4]uint8
	Entry     [8]uint8
	Phoff     [8]uint8
	Shoff     [8]uint8
	Flags     [4]uint8
	Ehsize    [2]uint8
	Phentsize [2]uint8
	Phnum     [2]uint8
	Shentsize [2]uint8
	Shnum     [2]uint8
	Shstrndx  [2]uint8
}

type ElfObj 

type ElfObj struct {
	// contains filtered or unexported fields
}

type ElfPhdr 

type ElfPhdr struct {
	// contains filtered or unexported fields
}

* Program header.

type ElfProgBytes 

type ElfProgBytes struct {
}

type ElfProgBytes64 

type ElfProgBytes64 struct {
}

type ElfSect 

type ElfSect struct {
	// contains filtered or unexported fields
}

type ElfSectBytes 

type ElfSectBytes struct {
	Name    [4]uint8
	Type    [4]uint8
	Flags   [4]uint8
	Addr    [4]uint8
	Off     [4]uint8
	Size    [4]uint8
	Link    [4]uint8
	Info    [4]uint8
	Align   [4]uint8
	Entsize [4]uint8
}

type ElfSectBytes64 

type ElfSectBytes64 struct {
	Name    [4]uint8
	Type    [4]uint8
	Flags   [8]uint8
	Addr    [8]uint8
	Off     [8]uint8
	Size    [8]uint8
	Link    [4]uint8
	Info    [4]uint8
	Align   [8]uint8
	Entsize [8]uint8
}

type ElfShdr 

type ElfShdr struct {
	// contains filtered or unexported fields
}

* Section header.

type ElfSym 

type ElfSym struct {
	// contains filtered or unexported fields
}

type ElfSymBytes 

type ElfSymBytes struct {
	Name  [4]uint8
	Value [4]uint8
	Size  [4]uint8
	Info  uint8
	Other uint8
	Shndx [2]uint8
}

type ElfSymBytes64 

type ElfSymBytes64 struct {
	Name  [4]uint8
	Info  uint8
	Other uint8
	Shndx [2]uint8
	Value [8]uint8
	Size  [8]uint8
}

type Elfaux 

type Elfaux struct {
	// contains filtered or unexported fields
}

type Elflib 

type Elflib struct {
	// contains filtered or unexported fields
}

type Elfstring 

type Elfstring struct {
	// contains filtered or unexported fields
}

type FuncInfo added in go1.7 

type FuncInfo struct {
	Args        int32
	Locals      int32
	Autom       []Auto
	Pcsp        Pcdata
	Pcfile      Pcdata
	Pcline      Pcdata
	Pcinline    Pcdata
	Pcdata      []Pcdata
	Funcdata    []*Symbol
	Funcdataoff []int64
	File        []*Symbol
	InlTree     []InlinedCall
}

type GCProg 

type GCProg struct {
	// contains filtered or unexported fields
}

func (*GCProg) AddSym 

func (p *GCProg) AddSym(s *Symbol)

func (*GCProg) End 

func (p *GCProg) End(size int64)

func (*GCProg) Init 

func (p *GCProg) Init(ctxt *Link, name string)

type Hostobj 

type Hostobj struct {
	// contains filtered or unexported fields
}

type IMAGE_DATA_DIRECTORY 

type IMAGE_DATA_DIRECTORY struct {
	VirtualAddress uint32
	Size           uint32
}

type IMAGE_EXPORT_DIRECTORY 

type IMAGE_EXPORT_DIRECTORY struct {
	Characteristics       uint32
	TimeDateStamp         uint32
	MajorVersion          uint16
	MinorVersion          uint16
	Name                  uint32
	Base                  uint32
	NumberOfFunctions     uint32
	NumberOfNames         uint32
	AddressOfFunctions    uint32
	AddressOfNames        uint32
	AddressOfNameOrdinals uint32
}

type IMAGE_FILE_HEADER 

type IMAGE_FILE_HEADER struct {
	Machine              uint16
	NumberOfSections     uint16
	TimeDateStamp        uint32
	PointerToSymbolTable uint32
	NumberOfSymbols      uint32
	SizeOfOptionalHeader uint16
	Characteristics      uint16
}

type IMAGE_IMPORT_DESCRIPTOR 

type IMAGE_IMPORT_DESCRIPTOR struct {
	OriginalFirstThunk uint32
	TimeDateStamp      uint32
	ForwarderChain     uint32
	Name               uint32
	FirstThunk         uint32
}

type IMAGE_OPTIONAL_HEADER 

type IMAGE_OPTIONAL_HEADER struct {
	Magic                       uint16
	MajorLinkerVersion          uint8
	MinorLinkerVersion          uint8
	SizeOfCode                  uint32
	SizeOfInitializedData       uint32
	SizeOfUninitializedData     uint32
	AddressOfEntryPoint         uint32
	BaseOfCode                  uint32
	BaseOfData                  uint32
	ImageBase                   uint32
	SectionAlignment            uint32
	FileAlignment               uint32
	MajorOperatingSystemVersion uint16
	MinorOperatingSystemVersion uint16
	MajorImageVersion           uint16
	MinorImageVersion           uint16
	MajorSubsystemVersion       uint16
	MinorSubsystemVersion       uint16
	Win32VersionValue           uint32
	SizeOfImage                 uint32
	SizeOfHeaders               uint32
	CheckSum                    uint32
	Subsystem                   uint16
	DllCharacteristics          uint16
	SizeOfStackReserve          uint32
	SizeOfStackCommit           uint32
	SizeOfHeapReserve           uint32
	SizeOfHeapCommit            uint32
	LoaderFlags                 uint32
	NumberOfRvaAndSizes         uint32
	DataDirectory               [16]IMAGE_DATA_DIRECTORY
}

type IMAGE_SECTION_HEADER 

type IMAGE_SECTION_HEADER struct {
	Name                 [8]uint8
	VirtualSize          uint32
	VirtualAddress       uint32
	SizeOfRawData        uint32
	PointerToRawData     uint32
	PointerToRelocations uint32
	PointerToLineNumbers uint32
	NumberOfRelocations  uint16
	NumberOfLineNumbers  uint16
	Characteristics      uint32
}

type Imp 

type Imp struct {
	// contains filtered or unexported fields
}

type InlinedCall added in go1.9 

type InlinedCall struct {
	Parent int32   // index of parent in InlTree
	File   *Symbol // file of the inlined call
	Line   int32   // line number of the inlined call
	Func   *Symbol // function that was inlined
}

InlinedCall is a node in a local inlining tree (FuncInfo.InlTree).

type Library 

type Library struct {
	Objref string
	Srcref string
	File   string
	Pkg    string
	Shlib  string
	// contains filtered or unexported fields
}

func (Library) String added in go1.8 

func (l Library) String() string
type Link struct {
	Syms *Symbols

	Arch      *sys.Arch
	Debugvlog int
	Bso       *bufio.Writer

	Loaded bool // set after all inputs have been loaded as symbols

	Tlsg         *Symbol
	Libdir       []string
	Library      []*Library
	LibraryByPkg map[string]*Library
	Shlibs       []Shlib
	Tlsoffset    int
	Textp        []*Symbol
	Filesyms     []*Symbol
	Moduledata   *Symbol

	PackageFile  map[string]string
	PackageShlib map[string]string
	// contains filtered or unexported fields
}

Link holds the context for writing object code from a compiler or for reading that input into the linker.

func (*Link) AddTramp added in go1.8 

func (ctxt *Link) AddTramp(s *Symbol)

add a trampoline with symbol s (to be laid down after the current function)

func (*Link) DynlinkingGo added in go1.8 

func (ctxt *Link) DynlinkingGo() bool

DynlinkingGo returns whether we are producing Go code that can live in separate shared libraries linked together at runtime.

func (*Link) FixedFrameSize added in go1.6 

func (ctxt *Link) FixedFrameSize() int64

The smallest possible offset from the hardware stack pointer to a local variable on the stack. Architectures that use a link register save its value on the stack in the function prologue and so always have a pointer between the hardware stack pointer and the local variable area.

func (*Link) Logf added in go1.8 

func (l *Link) Logf(format string, args ...interface{})

type LinkMode added in go1.8 

type LinkMode uint8

LinkMode indicates whether an external linker is used for the final link. 

const (
	LinkAuto LinkMode = iota
	LinkInternal
	LinkExternal
)

func (*LinkMode) Set added in go1.8 

func (mode *LinkMode) Set(s string) error

func (*LinkMode) String added in go1.8 

func (mode *LinkMode) String() string

type MachoHdr 

type MachoHdr struct {
	// contains filtered or unexported fields
}

type MachoLoad 

type MachoLoad struct {
	// contains filtered or unexported fields
}

type MachoSect 

type MachoSect struct {
	// contains filtered or unexported fields
}

type MachoSeg 

type MachoSeg struct {
	// contains filtered or unexported fields
}

type PE64_IMAGE_OPTIONAL_HEADER 

type PE64_IMAGE_OPTIONAL_HEADER struct {
	Magic                       uint16
	MajorLinkerVersion          uint8
	MinorLinkerVersion          uint8
	SizeOfCode                  uint32
	SizeOfInitializedData       uint32
	SizeOfUninitializedData     uint32
	AddressOfEntryPoint         uint32
	BaseOfCode                  uint32
	ImageBase                   uint64
	SectionAlignment            uint32
	FileAlignment               uint32
	MajorOperatingSystemVersion uint16
	MinorOperatingSystemVersion uint16
	MajorImageVersion           uint16
	MinorImageVersion           uint16
	MajorSubsystemVersion       uint16
	MinorSubsystemVersion       uint16
	Win32VersionValue           uint32
	SizeOfImage                 uint32
	SizeOfHeaders               uint32
	CheckSum                    uint32
	Subsystem                   uint16
	DllCharacteristics          uint16
	SizeOfStackReserve          uint64
	SizeOfStackCommit           uint64
	SizeOfHeapReserve           uint64
	SizeOfHeapCommit            uint64
	LoaderFlags                 uint32
	NumberOfRvaAndSizes         uint32
	DataDirectory               [16]IMAGE_DATA_DIRECTORY
}

X64

type Pcdata 

type Pcdata struct {
	P []byte
}

type Pciter 

type Pciter struct {
	// contains filtered or unexported fields
}

type Pkg 

type Pkg struct {
	// contains filtered or unexported fields
}

type Reloc 

type Reloc struct {
	Off     int32            // offset to rewrite
	Siz     uint8            // number of bytes to rewrite, 1, 2, or 4
	Done    uint8            // set to 1 when relocation is complete
	Variant RelocVariant     // variation on Type
	Type    objabi.RelocType // the relocation type
	Add     int64            // addend
	Xadd    int64            // addend passed to external linker
	Sym     *Symbol          // symbol the relocation addresses
	Xsym    *Symbol          // symbol passed to external linker
}

Reloc is a relocation.

The typical Reloc rewrites part of a symbol at offset Off to address Sym. A Reloc is stored in a slice on the Symbol it rewrites.

Relocations are generated by the compiler as the type cmd/internal/obj.Reloc, which is encoded into the object file wire format and decoded by the linker into this type. A separate type is used to hold linker-specific state about the relocation.

Some relocations are created by cmd/link.

func Addrel 

func Addrel(s *Symbol) *Reloc

type RelocVariant added in go1.8 

type RelocVariant uint8

RelocVariant is a linker-internal variation on a relocation. 

const (
	RV_NONE RelocVariant = iota
	RV_POWER_LO
	RV_POWER_HI
	RV_POWER_HA
	RV_POWER_DS

	// RV_390_DBL is a s390x-specific relocation variant that indicates that
	// the value to be placed into the relocatable field should first be
	// divided by 2.
	RV_390_DBL

	RV_CHECK_OVERFLOW RelocVariant = 1 << 7
	RV_TYPE_MASK      RelocVariant = RV_CHECK_OVERFLOW - 1
)

type Rpath 

type Rpath struct {
	// contains filtered or unexported fields
}

func (*Rpath) Set 

func (r *Rpath) Set(val string) error

func (*Rpath) String 

func (r *Rpath) String() string

type Section 

type Section struct {
	Rwx     uint8
	Extnum  int16
	Align   int32
	Name    string
	Vaddr   uint64
	Length  uint64
	Seg     *Segment
	Elfsect *ElfShdr
	Reloff  uint64
	Rellen  uint64
}

type Segment 

type Segment struct {
	Rwx      uint8  // permission as usual unix bits (5 = r-x etc)
	Vaddr    uint64 // virtual address
	Length   uint64 // length in memory
	Fileoff  uint64 // file offset
	Filelen  uint64 // length on disk
	Sections []*Section
}
var (
	Segtext      Segment
	Segrodata    Segment
	Segrelrodata Segment
	Segdata      Segment
	Segdwarf     Segment
)

type Shlib 

type Shlib struct {
	Path string
	Hash []byte
	Deps []string
	File *elf.File
	// contains filtered or unexported fields
}

type SymKind added in go1.9 

type SymKind int16

A SymKind describes the kind of memory represented by a symbol. 

const (
	Sxxx SymKind = iota
	STEXT
	SELFRXSECT

	// Read-only sections.
	STYPE
	SSTRING
	SGOSTRING
	SGOFUNC
	SGCBITS
	SRODATA
	SFUNCTAB

	SELFROSECT
	SMACHOPLT

	// Read-only sections with relocations.
	//
	// Types STYPE-SFUNCTAB above are written to the .rodata section by default.
	// When linking a shared object, some conceptually "read only" types need to
	// be written to by relocations and putting them in a section called
	// ".rodata" interacts poorly with the system linkers. The GNU linkers
	// support this situation by arranging for sections of the name
	// ".data.rel.ro.XXX" to be mprotected read only by the dynamic linker after
	// relocations have applied, so when the Go linker is creating a shared
	// object it checks all objects of the above types and bumps any object that
	// has a relocation to it to the corresponding type below, which are then
	// written to sections with appropriate magic names.
	STYPERELRO
	SSTRINGRELRO
	SGOSTRINGRELRO
	SGOFUNCRELRO
	SGCBITSRELRO
	SRODATARELRO
	SFUNCTABRELRO

	// Part of .data.rel.ro if it exists, otherwise part of .rodata.
	STYPELINK
	SITABLINK
	SSYMTAB
	SPCLNTAB

	// Writable sections.
	SELFSECT
	SMACHO
	SMACHOGOT
	SWINDOWS
	SELFGOT
	SNOPTRDATA
	SINITARR
	SDATA
	SBSS
	SNOPTRBSS
	STLSBSS
	SXREF
	SMACHOSYMSTR
	SMACHOSYMTAB
	SMACHOINDIRECTPLT
	SMACHOINDIRECTGOT
	SFILE
	SFILEPATH
	SCONST
	SDYNIMPORT
	SHOSTOBJ
	SDWARFSECT
	SDWARFINFO
	SDWARFRANGE
	SSUB       = SymKind(1 << 8)
	SMASK      = SymKind(SSUB - 1)
	SHIDDEN    = SymKind(1 << 9)
	SCONTAINER = SymKind(1 << 10) // has a sub-symbol
)

Defined SymKind values.

TODO(rsc): Give idiomatic Go names.

func (SymKind) String added in go1.9 

func (i SymKind) String() string

type Symbol added in go1.8 

type Symbol struct {
	Name        string
	Extname     string
	Type        SymKind
	Version     int16
	Attr        Attribute
	Localentry  uint8
	Dynid       int32
	Plt         int32
	Got         int32
	Align       int32
	Elfsym      int32
	LocalElfsym int32
	Value       int64
	Size        int64
	// ElfType is set for symbols read from shared libraries by ldshlibsyms. It
	// is not set for symbols defined by the packages being linked or by symbols
	// read by ldelf (and so is left as elf.STT_NOTYPE).
	ElfType     elf.SymType
	Sub         *Symbol
	Outer       *Symbol
	Gotype      *Symbol
	Reachparent *Symbol
	File        string
	Dynimplib   string
	Dynimpvers  string
	Sect        *Section
	FuncInfo    *FuncInfo
	// P contains the raw symbol data.
	P []byte
	R []Reloc
}

Symbol is an entry in the symbol table.

func (*Symbol) ElfsymForReloc added in go1.8 

func (s *Symbol) ElfsymForReloc() int32

func (*Symbol) Len added in go1.9 

func (s *Symbol) Len() int64

func (*Symbol) String added in go1.8 

func (s *Symbol) String() string

type SymbolType added in go1.8 

type SymbolType int8

type Symbols added in go1.8 

type Symbols struct {
	Allsym []*Symbol
	// contains filtered or unexported fields
}

func (*Symbols) IncVersion added in go1.8 

func (syms *Symbols) IncVersion() int

Allocate a new version (i.e. symbol namespace).

func (*Symbols) Lookup added in go1.8 

func (syms *Symbols) Lookup(name string, v int) *Symbol

Look up the symbol with the given name and version, creating the symbol if it is not found.

func (*Symbols) ROLookup added in go1.8 

func (syms *Symbols) ROLookup(name string, v int) *Symbol

Look up the symbol with the given name and version, returning nil if it is not found.

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