ld

package
v1.21.10 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Feb 7, 2024 License: MIT Imports: 13 Imported by: 0

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Index

Constants

View Source 
const (
	SARMAG  = 8
	SAR_HDR = 16 + 44
)
View Source 
const (
	GdbScriptPythonFileId = 1
	GdbScriptSchemeFileId = 3
	GdbScriptPythonTextId = 4
	GdbScriptSchemeTextId = 6
)

https://sourceware.org/gdb/onlinedocs/gdb/dotdebug_005fgdb_005fscripts-section.html Each entry inside .debug_gdb_scripts section begins with a non-null prefix byte that specifies the kind of entry. The following entries are supported:

View Source 
const (
	MaxKeySize = abi.MapMaxKeyBytes
	MaxValSize = abi.MapMaxElemBytes
	BucketSize = abi.MapBucketCount
)

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 = 11
)

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

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 (
	// No floating point is present in the module (default)
	MIPS_FPABI_NONE = 0
	// FP code in the module uses the FP32 ABI for a 32-bit ABI
	MIPS_FPABI_ANY = 1
	// FP code in the module only uses single precision ABI
	MIPS_FPABI_SINGLE = 2
	// FP code in the module uses soft-float ABI
	MIPS_FPABI_SOFT = 3
	// FP code in the module assumes an FPU with FR=1 and has 12
	// callee-saved doubles. Historic, no longer supported.
	MIPS_FPABI_HIST = 4
	// FP code in the module uses the FPXX  ABI
	MIPS_FPABI_FPXX = 5
	// FP code in the module uses the FP64  ABI
	MIPS_FPABI_FP64 = 6
	// FP code in the module uses the FP64A ABI
	MIPS_FPABI_FP64A = 7
)

member of .gnu.attributes of MIPS for fpAbi

View Source 
const (
	ELF_NOTE_NETBSD_NAMESZ  = 7
	ELF_NOTE_NETBSD_DESCSZ  = 4
	ELF_NOTE_NETBSD_TAG     = 1
	ELF_NOTE_NETBSD_VERSION = 700000000
)

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_FREEBSD_NAMESZ            = 8
	ELF_NOTE_FREEBSD_DESCSZ            = 4
	ELF_NOTE_FREEBSD_ABI_TAG           = 1
	ELF_NOTE_FREEBSD_NOINIT_TAG        = 2
	ELF_NOTE_FREEBSD_FEATURE_CTL_TAG   = 4
	ELF_NOTE_FREEBSD_VERSION           = 1203000
	ELF_NOTE_FREEBSD_FCTL_ASLR_DISABLE = 0x1
)

FreeBSD Signature (as per sys/elf_common.h)

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 (
	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
	MACHO_SUBCPU_ARM64_V8                = 1
	MACHO_SUBCPU_ARM64E                  = 2
	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_GOT_LOAD_PAGE21    = 5
	MACHO_ARM64_RELOC_GOT_LOAD_PAGEOFF12 = 6
	MACHO_ARM64_RELOC_ADDEND             = 10
	MACHO_GENERIC_RELOC_VANILLA          = 0
	MACHO_FAKE_GOTPCREL                  = 100
)
View Source 
const (
	MH_MAGIC    = 0xfeedface
	MH_MAGIC_64 = 0xfeedfacf

	MH_OBJECT  = 0x1
	MH_EXECUTE = 0x2

	MH_NOUNDEFS = 0x1
	MH_DYLDLINK = 0x4
	MH_PIE      = 0x200000
)
View Source 
const (
	LC_SEGMENT                  = 0x1
	LC_SYMTAB                   = 0x2
	LC_SYMSEG                   = 0x3
	LC_THREAD                   = 0x4
	LC_UNIXTHREAD               = 0x5
	LC_LOADFVMLIB               = 0x6
	LC_IDFVMLIB                 = 0x7
	LC_IDENT                    = 0x8
	LC_FVMFILE                  = 0x9
	LC_PREPAGE                  = 0xa
	LC_DYSYMTAB                 = 0xb
	LC_LOAD_DYLIB               = 0xc
	LC_ID_DYLIB                 = 0xd
	LC_LOAD_DYLINKER            = 0xe
	LC_ID_DYLINKER              = 0xf
	LC_PREBOUND_DYLIB           = 0x10
	LC_ROUTINES                 = 0x11
	LC_SUB_FRAMEWORK            = 0x12
	LC_SUB_UMBRELLA             = 0x13
	LC_SUB_CLIENT               = 0x14
	LC_SUB_LIBRARY              = 0x15
	LC_TWOLEVEL_HINTS           = 0x16
	LC_PREBIND_CKSUM            = 0x17
	LC_LOAD_WEAK_DYLIB          = 0x80000018
	LC_SEGMENT_64               = 0x19
	LC_ROUTINES_64              = 0x1a
	LC_UUID                     = 0x1b
	LC_RPATH                    = 0x8000001c
	LC_CODE_SIGNATURE           = 0x1d
	LC_SEGMENT_SPLIT_INFO       = 0x1e
	LC_REEXPORT_DYLIB           = 0x8000001f
	LC_LAZY_LOAD_DYLIB          = 0x20
	LC_ENCRYPTION_INFO          = 0x21
	LC_DYLD_INFO                = 0x22
	LC_DYLD_INFO_ONLY           = 0x80000022
	LC_LOAD_UPWARD_DYLIB        = 0x80000023
	LC_VERSION_MIN_MACOSX       = 0x24
	LC_VERSION_MIN_IPHONEOS     = 0x25
	LC_FUNCTION_STARTS          = 0x26
	LC_DYLD_ENVIRONMENT         = 0x27
	LC_MAIN                     = 0x80000028
	LC_DATA_IN_CODE             = 0x29
	LC_SOURCE_VERSION           = 0x2A
	LC_DYLIB_CODE_SIGN_DRS      = 0x2B
	LC_ENCRYPTION_INFO_64       = 0x2C
	LC_LINKER_OPTION            = 0x2D
	LC_LINKER_OPTIMIZATION_HINT = 0x2E
	LC_VERSION_MIN_TVOS         = 0x2F
	LC_VERSION_MIN_WATCHOS      = 0x30
	LC_VERSION_NOTE             = 0x31
	LC_BUILD_VERSION            = 0x32
	LC_DYLD_EXPORTS_TRIE        = 0x80000033
	LC_DYLD_CHAINED_FIXUPS      = 0x80000034
)
View Source 
const (
	S_REGULAR                  = 0x0
	S_ZEROFILL                 = 0x1
	S_NON_LAZY_SYMBOL_POINTERS = 0x6
	S_SYMBOL_STUBS             = 0x8
	S_MOD_INIT_FUNC_POINTERS   = 0x9
	S_ATTR_PURE_INSTRUCTIONS   = 0x80000000
	S_ATTR_DEBUG               = 0x02000000
	S_ATTR_SOME_INSTRUCTIONS   = 0x00000400
)
View Source 
const (
	REBASE_TYPE_POINTER         = 1
	REBASE_TYPE_TEXT_ABSOLUTE32 = 2
	REBASE_TYPE_TEXT_PCREL32    = 3

	REBASE_OPCODE_MASK                               = 0xF0
	REBASE_IMMEDIATE_MASK                            = 0x0F
	REBASE_OPCODE_DONE                               = 0x00
	REBASE_OPCODE_SET_TYPE_IMM                       = 0x10
	REBASE_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB        = 0x20
	REBASE_OPCODE_ADD_ADDR_ULEB                      = 0x30
	REBASE_OPCODE_ADD_ADDR_IMM_SCALED                = 0x40
	REBASE_OPCODE_DO_REBASE_IMM_TIMES                = 0x50
	REBASE_OPCODE_DO_REBASE_ULEB_TIMES               = 0x60
	REBASE_OPCODE_DO_REBASE_ADD_ADDR_ULEB            = 0x70
	REBASE_OPCODE_DO_REBASE_ULEB_TIMES_SKIPPING_ULEB = 0x80
)

rebase table opcode

View Source 
const (
	BIND_TYPE_POINTER         = 1
	BIND_TYPE_TEXT_ABSOLUTE32 = 2
	BIND_TYPE_TEXT_PCREL32    = 3

	BIND_SPECIAL_DYLIB_SELF            = 0
	BIND_SPECIAL_DYLIB_MAIN_EXECUTABLE = -1
	BIND_SPECIAL_DYLIB_FLAT_LOOKUP     = -2
	BIND_SPECIAL_DYLIB_WEAK_LOOKUP     = -3

	BIND_OPCODE_MASK                                         = 0xF0
	BIND_IMMEDIATE_MASK                                      = 0x0F
	BIND_OPCODE_DONE                                         = 0x00
	BIND_OPCODE_SET_DYLIB_ORDINAL_IMM                        = 0x10
	BIND_OPCODE_SET_DYLIB_ORDINAL_ULEB                       = 0x20
	BIND_OPCODE_SET_DYLIB_SPECIAL_IMM                        = 0x30
	BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM                = 0x40
	BIND_OPCODE_SET_TYPE_IMM                                 = 0x50
	BIND_OPCODE_SET_ADDEND_SLEB                              = 0x60
	BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB                  = 0x70
	BIND_OPCODE_ADD_ADDR_ULEB                                = 0x80
	BIND_OPCODE_DO_BIND                                      = 0x90
	BIND_OPCODE_DO_BIND_ADD_ADDR_ULEB                        = 0xA0
	BIND_OPCODE_DO_BIND_ADD_ADDR_IMM_SCALED                  = 0xB0
	BIND_OPCODE_DO_BIND_ULEB_TIMES_SKIPPING_ULEB             = 0xC0
	BIND_OPCODE_THREADED                                     = 0xD0
	BIND_SUBOPCODE_THREADED_SET_BIND_ORDINAL_TABLE_SIZE_ULEB = 0x00
	BIND_SUBOPCODE_THREADED_APPLY                            = 0x01
)

bind table opcode

View Source 
const (
	SymKindLocal = 0 + iota
	SymKindExtdef
	SymKindUndef
	NumSymKind
)
View Source 
const (
	BUCKETSIZE    = 256 * MINFUNC
	SUBBUCKETS    = 16
	SUBBUCKETSIZE = BUCKETSIZE / SUBBUCKETS
	NOIDX         = 0x7fffffff
)
View Source 
const (
	IMAGE_SCN_CNT_CODE               = 0x00000020
	IMAGE_SCN_CNT_INITIALIZED_DATA   = 0x00000040
	IMAGE_SCN_CNT_UNINITIALIZED_DATA = 0x00000080
	IMAGE_SCN_LNK_OTHER              = 0x00000100
	IMAGE_SCN_LNK_INFO               = 0x00000200
	IMAGE_SCN_LNK_REMOVE             = 0x00000800
	IMAGE_SCN_LNK_COMDAT             = 0x00001000
	IMAGE_SCN_GPREL                  = 0x00008000
	IMAGE_SCN_MEM_PURGEABLE          = 0x00020000
	IMAGE_SCN_MEM_16BIT              = 0x00020000
	IMAGE_SCN_MEM_LOCKED             = 0x00040000
	IMAGE_SCN_MEM_PRELOAD            = 0x00080000
	IMAGE_SCN_ALIGN_1BYTES           = 0x00100000
	IMAGE_SCN_ALIGN_2BYTES           = 0x00200000
	IMAGE_SCN_ALIGN_4BYTES           = 0x00300000
	IMAGE_SCN_ALIGN_8BYTES           = 0x00400000
	IMAGE_SCN_ALIGN_16BYTES          = 0x00500000
	IMAGE_SCN_ALIGN_32BYTES          = 0x00600000
	IMAGE_SCN_ALIGN_64BYTES          = 0x00700000
	IMAGE_SCN_ALIGN_128BYTES         = 0x00800000
	IMAGE_SCN_ALIGN_256BYTES         = 0x00900000
	IMAGE_SCN_ALIGN_512BYTES         = 0x00A00000
	IMAGE_SCN_ALIGN_1024BYTES        = 0x00B00000
	IMAGE_SCN_ALIGN_2048BYTES        = 0x00C00000
	IMAGE_SCN_ALIGN_4096BYTES        = 0x00D00000
	IMAGE_SCN_ALIGN_8192BYTES        = 0x00E00000
	IMAGE_SCN_LNK_NRELOC_OVFL        = 0x01000000
	IMAGE_SCN_MEM_DISCARDABLE        = 0x02000000
	IMAGE_SCN_MEM_NOT_CACHED         = 0x04000000
	IMAGE_SCN_MEM_NOT_PAGED          = 0x08000000
	IMAGE_SCN_MEM_SHARED             = 0x10000000
	IMAGE_SCN_MEM_EXECUTE            = 0x20000000
	IMAGE_SCN_MEM_READ               = 0x40000000
	IMAGE_SCN_MEM_WRITE              = 0x80000000
)
View Source 
const (
	IMAGE_SYM_TYPE_NULL      = 0
	IMAGE_SYM_TYPE_STRUCT    = 8
	IMAGE_SYM_DTYPE_FUNCTION = 2
	IMAGE_SYM_DTYPE_ARRAY    = 3
	IMAGE_SYM_CLASS_EXTERNAL = 2
	IMAGE_SYM_CLASS_STATIC   = 3

	IMAGE_REL_I386_DIR32   = 0x0006
	IMAGE_REL_I386_DIR32NB = 0x0007
	IMAGE_REL_I386_SECREL  = 0x000B
	IMAGE_REL_I386_REL32   = 0x0014

	IMAGE_REL_AMD64_ADDR64   = 0x0001
	IMAGE_REL_AMD64_ADDR32   = 0x0002
	IMAGE_REL_AMD64_ADDR32NB = 0x0003
	IMAGE_REL_AMD64_REL32    = 0x0004
	IMAGE_REL_AMD64_SECREL   = 0x000B

	IMAGE_REL_ARM_ABSOLUTE = 0x0000
	IMAGE_REL_ARM_ADDR32   = 0x0001
	IMAGE_REL_ARM_ADDR32NB = 0x0002
	IMAGE_REL_ARM_BRANCH24 = 0x0003
	IMAGE_REL_ARM_BRANCH11 = 0x0004
	IMAGE_REL_ARM_SECREL   = 0x000F

	IMAGE_REL_ARM64_ABSOLUTE       = 0x0000
	IMAGE_REL_ARM64_ADDR32         = 0x0001
	IMAGE_REL_ARM64_ADDR32NB       = 0x0002
	IMAGE_REL_ARM64_BRANCH26       = 0x0003
	IMAGE_REL_ARM64_PAGEBASE_REL21 = 0x0004
	IMAGE_REL_ARM64_REL21          = 0x0005
	IMAGE_REL_ARM64_PAGEOFFSET_12A = 0x0006
	IMAGE_REL_ARM64_PAGEOFFSET_12L = 0x0007
	IMAGE_REL_ARM64_SECREL         = 0x0008
	IMAGE_REL_ARM64_SECREL_LOW12A  = 0x0009
	IMAGE_REL_ARM64_SECREL_HIGH12A = 0x000A
	IMAGE_REL_ARM64_SECREL_LOW12L  = 0x000B
	IMAGE_REL_ARM64_TOKEN          = 0x000C
	IMAGE_REL_ARM64_SECTION        = 0x000D
	IMAGE_REL_ARM64_ADDR64         = 0x000E
	IMAGE_REL_ARM64_BRANCH19       = 0x000F
	IMAGE_REL_ARM64_BRANCH14       = 0x0010
	IMAGE_REL_ARM64_REL32          = 0x0011

	IMAGE_REL_BASED_HIGHLOW = 3
	IMAGE_REL_BASED_DIR64   = 10
)

See https://docs.microsoft.com/en-us/windows/win32/debug/pe-format. TODO(crawshaw): add these constants to debug/pe.

View Source 
const (
	PeMinimumTargetMajorVersion = 6
	PeMinimumTargetMinorVersion = 1
)
View Source 
const (
	// Total amount of space to reserve at the start of the file
	// for File Header, Auxiliary Header, and Section Headers.
	// May waste some.
	XCOFFHDRRESERVE = FILHSZ_64 + AOUTHSZ_EXEC64 + SCNHSZ_64*23

	// base on dump -o, then rounded from 32B to 64B to
	// match worst case elf text section alignment on ppc64.
	XCOFFSECTALIGN int64 = 64

	// XCOFF binaries should normally have all its sections position-independent.
	// However, this is not yet possible for .text because of some R_ADDR relocations
	// inside RODATA symbols.
	// .data and .bss are position-independent so their address start inside an unreachable
	// segment during execution to force segfault if something is wrong.
	XCOFFTEXTBASE = 0x100000000
	XCOFFDATABASE = 0x200000000
)
View Source 
const (
	F_RELFLG    = 0x0001
	F_EXEC      = 0x0002
	F_LNNO      = 0x0004
	F_FDPR_PROF = 0x0010
	F_FDPR_OPTI = 0x0020
	F_DSA       = 0x0040
	F_VARPG     = 0x0100
	F_DYNLOAD   = 0x1000
	F_SHROBJ    = 0x2000
	F_LOADONLY  = 0x4000
)

Flags that describe the type of the object file.

View Source 
const (
	STYP_DWARF  = 0x0010
	STYP_TEXT   = 0x0020
	STYP_DATA   = 0x0040
	STYP_BSS    = 0x0080
	STYP_EXCEPT = 0x0100
	STYP_INFO   = 0x0200
	STYP_TDATA  = 0x0400
	STYP_TBSS   = 0x0800
	STYP_LOADER = 0x1000
	STYP_DEBUG  = 0x2000
	STYP_TYPCHK = 0x4000
	STYP_OVRFLO = 0x8000
)

Flags defining the section type.

View Source 
const (
	SSUBTYP_DWINFO  = 0x10000
	SSUBTYP_DWLINE  = 0x20000
	SSUBTYP_DWPBNMS = 0x30000
	SSUBTYP_DWPBTYP = 0x40000
	SSUBTYP_DWARNGE = 0x50000
	SSUBTYP_DWABREV = 0x60000
	SSUBTYP_DWSTR   = 0x70000
	SSUBTYP_DWRNGES = 0x80000
	SSUBTYP_DWLOC   = 0x90000
	SSUBTYP_DWFRAME = 0xA0000
	SSUBTYP_DWMAC   = 0xB0000
)
View Source 
const (
	FILHSZ_32      = 20
	FILHSZ_64      = 24
	AOUTHSZ_EXEC32 = 72
	AOUTHSZ_EXEC64 = 120
	SCNHSZ_32      = 40
	SCNHSZ_64      = 72
	LDHDRSZ_32     = 32
	LDHDRSZ_64     = 56
	LDSYMSZ_64     = 24
	RELSZ_64       = 14
)

Headers size

View Source 
const (
	// Nscnum
	N_DEBUG = -2
	N_ABS   = -1
	N_UNDEF = 0

	//Ntype
	SYM_V_INTERNAL  = 0x1000
	SYM_V_HIDDEN    = 0x2000
	SYM_V_PROTECTED = 0x3000
	SYM_V_EXPORTED  = 0x4000
	SYM_TYPE_FUNC   = 0x0020
)
View Source 
const (
	C_NULL    = 0
	C_EXT     = 2
	C_STAT    = 3
	C_BLOCK   = 100
	C_FCN     = 101
	C_FILE    = 103
	C_HIDEXT  = 107
	C_BINCL   = 108
	C_EINCL   = 109
	C_WEAKEXT = 111
	C_DWARF   = 112
	C_GSYM    = 128
	C_LSYM    = 129
	C_PSYM    = 130
	C_RSYM    = 131
	C_RPSYM   = 132
	C_STSYM   = 133
	C_BCOMM   = 135
	C_ECOML   = 136
	C_ECOMM   = 137
	C_DECL    = 140
	C_ENTRY   = 141
	C_FUN     = 142
	C_BSTAT   = 143
	C_ESTAT   = 144
	C_GTLS    = 145
	C_STTLS   = 146
)

Storage Class.

View Source 
const (
	XFT_FN = 0
	XFT_CT = 1
	XFT_CV = 2
	XFT_CD = 128
)

Xftype field

View Source 
const (
	XTY_ER  = 0
	XTY_SD  = 1
	XTY_LD  = 2
	XTY_CM  = 3
	XTY_WK  = 0x8
	XTY_EXP = 0x10
	XTY_ENT = 0x20
	XTY_IMP = 0x40
)

Symbol type field.

View Source 
const (
	XMC_PR     = 0
	XMC_RO     = 1
	XMC_DB     = 2
	XMC_TC     = 3
	XMC_UA     = 4
	XMC_RW     = 5
	XMC_GL     = 6
	XMC_XO     = 7
	XMC_SV     = 8
	XMC_BS     = 9
	XMC_DS     = 10
	XMC_UC     = 11
	XMC_TC0    = 15
	XMC_TD     = 16
	XMC_SV64   = 17
	XMC_SV3264 = 18
	XMC_TL     = 20
	XMC_UL     = 21
	XMC_TE     = 22
)

Storage-mapping class.

View Source 
const (
	XCOFF_R_POS = 0x00
	XCOFF_R_NEG = 0x01
	XCOFF_R_REL = 0x02
	XCOFF_R_TOC = 0x03
	XCOFF_R_TRL = 0x12

	XCOFF_R_TRLA = 0x13
	XCOFF_R_GL   = 0x05
	XCOFF_R_TCL  = 0x06
	XCOFF_R_RL   = 0x0C
	XCOFF_R_RLA  = 0x0D
	XCOFF_R_REF  = 0x0F
	XCOFF_R_BA   = 0x08
	XCOFF_R_RBA  = 0x18
	XCOFF_R_BR   = 0x0A
	XCOFF_R_RBR  = 0x1A

	XCOFF_R_TLS    = 0x20
	XCOFF_R_TLS_IE = 0x21
	XCOFF_R_TLS_LD = 0x22
	XCOFF_R_TLS_LE = 0x23
	XCOFF_R_TLSM   = 0x24
	XCOFF_R_TLSML  = 0x25

	XCOFF_R_TOCU = 0x30
	XCOFF_R_TOCL = 0x31
)
View Source 
const (
	ARMAG = "!<arch>\n"
)
View Source 
const (
	ARM_MAGIC_TRAMP_NUMBER = 0x5c000003
)

* Relocation types.

View Source 
const (
	COMPUNITHEADERSIZE = 4 + 2 + 4 + 1
)
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 ELF_NOTE_FREEBSD_NAME = "FreeBSD\x00"
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
)
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 SYMESZ = 18
View Source 
const (
	U64_TOCMAGIC = 0767
)

Variables

View Source 
var (
	Funcalign int

	HEADR int32
)
View Source 
var (
	Segtext      sym.Segment
	Segrodata    sym.Segment
	Segrelrodata sym.Segment
	Segdata      sym.Segment
	Segdwarf     sym.Segment
	Segpdata     sym.Segment
	Segxdata     sym.Segment

	Segments = []*sym.Segment{&Segtext, &Segrodata, &Segrelrodata, &Segdata, &Segdwarf, &Segpdata, &Segxdata}
)
View Source 
var (
	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")

	FlagDebugTramp    = flag.Int("debugtramp", 0, "debug trampolines")
	FlagDebugTextSize = flag.Int("debugtextsize", 0, "debug text section max size")

	FlagStrictDups = flag.Int("strictdups", 0, "sanity check duplicate symbol contents during object file reading (1=warn 2=err).")
	FlagRound      = flag.Int("R", -1, "set address rounding `quantum`")
	FlagTextAddr   = flag.Int64("T", -1, "set the start address of text symbols")
)

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

View Source 
var (
	// PEBASE is the base address for the executable.
	// It is small for 32-bit and large for 64-bit.
	PEBASE int64

	// 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 (
	PESECTHEADR int32
	PEFILEHEADR int32
)
View Source 
var CarrierSymByType [sym.SXREF]struct {
	Sym  loader.Sym
	Size int64
}

CarrierSymByType tracks carrier symbols and their sizes.

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 Elfstrdat []byte
View Source 
var (
	Nelfsym = 1
)

Functions

func AddGotSym 

func AddGotSym(target *Target, ldr *loader.Loader, syms *ArchSyms, s loader.Sym, elfRelocTyp uint32)

func AddMachoSym 

func AddMachoSym(ldr *loader.Loader, s loader.Sym)

AddMachoSym adds s to Mach-O symbol table, used in GenSymLate. Currently only used on ARM64 when external linking.

func AddPELabelSym 

func AddPELabelSym(ldr *loader.Loader, s loader.Sym)

func Adddynsym 

func Adddynsym(ldr *loader.Loader, target *Target, syms *ArchSyms, s loader.Sym)

func Asmbelfsetup 

func Asmbelfsetup()

func AtExit 

func AtExit(f func())

func CodeblkPad 

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

func DatblkBytes 

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

Used only on Wasm for now.

func ElfSymForReloc 

func ElfSymForReloc(ctxt *Link, s loader.Sym) int32

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(arch *sys.Arch, s *loader.SymbolBuilder, tag elf.DynTag, val uint64)

func Elfwritedynentsymplus 

func Elfwritedynentsymplus(ctxt *Link, s *loader.SymbolBuilder, tag elf.DynTag, t loader.Sym, add int64)

func Entryvalue 

func Entryvalue(ctxt *Link) int64

func Errorf 

func Errorf(dummy *int, 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.

TODO: remove. Use ctxt.Errorf instead. All remaining calls use nil as first arg.

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 ExtrelocSimple 

func ExtrelocSimple(ldr *loader.Loader, r loader.Reloc) loader.ExtReloc

ExtrelocSimple creates a simple external relocation from r, with the same symbol and addend.

func ExtrelocViaOuterSym 

func ExtrelocViaOuterSym(ldr *loader.Loader, r loader.Reloc, s loader.Sym) loader.ExtReloc

ExtrelocViaOuterSym creates an external relocation from r targeting the outer symbol and folding the subsymbol's offset into the addend.

func FoldSubSymbolOffset 

func FoldSubSymbolOffset(ldr *loader.Loader, s loader.Sym) (loader.Sym, int64)

FoldSubSymbolOffset computes the offset of symbol s to its top-level outer symbol. Returns the top-level symbol and the offset. This is used in generating external relocations.

func Lflag 

func Lflag(ctxt *Link, arg string)

func Loaderblk 

func Loaderblk(ctxt *Link, off uint64)

Create loader section and returns its size.

func MachoAddBind 

func MachoAddBind(off int64, targ loader.Sym)

func MachoAddRebase 

func MachoAddRebase(s loader.Sym, off int64)

func Main 

func Main(arch *sys.Arch, theArch Arch)

Main is the main entry point for the linker code.

func Peinit 

func Peinit(ctxt *Link)

func PrepareAddmoduledata 

func PrepareAddmoduledata(ctxt *Link) (*loader.SymbolBuilder, loader.Sym)

PrepareAddmoduledata returns a symbol builder that target-specific code can use to build up the linker-generated go.link.addmoduledata function, along with the sym for runtime.addmoduledata itself. If this function is not needed (for example in cases where we're linking a module that contains the runtime) the returned builder will be nil.

func Rnd 

func Rnd(v int64, r int64) int64

func Xcoffadddynrel 

func Xcoffadddynrel(target *Target, ldr *loader.Loader, syms *ArchSyms, s loader.Sym, r loader.Reloc, rIdx int) bool

Xcoffadddynrel adds a dynamic relocation in a XCOFF file. This relocation will be made by the loader.

func Xcoffinit 

func Xcoffinit(ctxt *Link)

Xcoffinit initialised some internal value and setups already known header information.

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

	// Threshold of total text size, used for trampoline insertion. If the total
	// text size is smaller than TrampLimit, we won't need to insert trampolines.
	// It is pretty close to the offset range of a direct CALL machine instruction.
	// We leave some room for extra stuff like PLT stubs.
	TrampLimit uint64

	// Empty spaces between codeblocks will be padded with this value.
	// For example an architecture might want to pad with a trap instruction to
	// catch wayward programs. Architectures that do not define a padding value
	// are padded with zeros.
	CodePad []byte

	// Plan 9 variables.
	Plan9Magic  uint32
	Plan9_64Bit bool

	Adddynrel func(*Target, *loader.Loader, *ArchSyms, loader.Sym, loader.Reloc, int) bool
	Archinit  func(*Link)
	// Archreloc is an arch-specific hook that assists in relocation processing
	// (invoked by 'relocsym'); it handles target-specific relocation tasks.
	// Here "rel" is the current relocation being examined, "sym" is the symbol
	// containing the chunk of data to which the relocation applies, and "off"
	// is the contents of the to-be-relocated data item (from sym.P). Return
	// value is the appropriately relocated value (to be written back to the
	// same spot in sym.P), number of external _host_ relocations needed (i.e.
	// ELF/Mach-O/etc. relocations, not Go relocations, this must match ELF.Reloc1,
	// etc.), and a boolean indicating success/failure (a failing value indicates
	// a fatal error).
	Archreloc func(*Target, *loader.Loader, *ArchSyms, loader.Reloc, loader.Sym,
		int64) (relocatedOffset int64, nExtReloc int, ok bool)
	// Archrelocvariant is a second arch-specific hook used for
	// relocation processing; it handles relocations where r.Type is
	// insufficient to describe the relocation (r.Variant !=
	// sym.RV_NONE). Here "rel" is the relocation being applied, "sym"
	// is the symbol containing the chunk of data to which the
	// relocation applies, and "off" is the contents of the
	// to-be-relocated data item (from sym.P). Return is an updated
	// offset value.
	Archrelocvariant func(target *Target, ldr *loader.Loader, rel loader.Reloc,
		rv sym.RelocVariant, sym loader.Sym, offset int64, data []byte) (relocatedOffset int64)

	// Generate a trampoline for a call from s to rs if necessary. ri is
	// index of the relocation.
	Trampoline func(ctxt *Link, ldr *loader.Loader, ri int, rs, s loader.Sym)

	// Assembling the binary breaks into two phases, writing the code/data/
	// dwarf information (which is rather generic), and some more architecture
	// specific work like setting up the elf headers/dynamic relocations, etc.
	// The phases are called "Asmb" and "Asmb2". Asmb2 needs to be defined for
	// every architecture, but only if architecture has an Asmb function will
	// it be used for assembly.  Otherwise a generic assembly Asmb function is
	// used.
	Asmb  func(*Link, *loader.Loader)
	Asmb2 func(*Link, *loader.Loader)

	// Extreloc is an arch-specific hook that converts a Go relocation to an
	// external relocation. Return the external relocation and whether it is
	// needed.
	Extreloc func(*Target, *loader.Loader, loader.Reloc, loader.Sym) (loader.ExtReloc, bool)

	Gentext        func(*Link, *loader.Loader)
	Machoreloc1    func(*sys.Arch, *OutBuf, *loader.Loader, loader.Sym, loader.ExtReloc, int64) bool
	MachorelocSize uint32
	PEreloc1       func(*sys.Arch, *OutBuf, *loader.Loader, loader.Sym, loader.ExtReloc, int64) bool
	Xcoffreloc1    func(*sys.Arch, *OutBuf, *loader.Loader, loader.Sym, loader.ExtReloc, int64) bool

	// Generate additional symbols for the native symbol table just prior to
	// code generation.
	GenSymsLate func(*Link, *loader.Loader)

	// 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(P []byte, off, size int)

	// optional override for assignAddress
	AssignAddress func(ldr *loader.Loader, sect *sym.Section, n int, s loader.Sym, va uint64, isTramp bool) (*sym.Section, int, uint64)

	// ELF specific information.
	ELF ELFArch
}

type ArchSyms 

type ArchSyms struct {
	Rel     loader.Sym
	Rela    loader.Sym
	RelPLT  loader.Sym
	RelaPLT loader.Sym

	LinkEditGOT loader.Sym
	LinkEditPLT loader.Sym

	TOC    loader.Sym
	DotTOC []loader.Sym

	GOT    loader.Sym
	PLT    loader.Sym
	GOTPLT loader.Sym

	Tlsg      loader.Sym
	Tlsoffset int

	Dynamic loader.Sym
	DynSym  loader.Sym
	DynStr  loader.Sym
	// contains filtered or unexported fields
}

ArchSyms holds a number of architecture specific symbols used during relocation. Rather than allowing them universal access to all symbols, we keep a subset for relocation application.

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

Set implements flag.Value to set the build mode based on the argument to the -buildmode flag.

func (*BuildMode) String 

func (mode *BuildMode) String() string

type Dll 

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

type ELFArch 

type ELFArch struct {
	Androiddynld   string
	Linuxdynld     string
	LinuxdynldMusl string
	Freebsddynld   string
	Netbsddynld    string
	Openbsddynld   string
	Dragonflydynld string
	Solarisdynld   string

	Reloc1    func(*Link, *OutBuf, *loader.Loader, loader.Sym, loader.ExtReloc, int, int64) bool
	RelocSize uint32
	SetupPLT  func(ctxt *Link, plt, gotplt *loader.SymbolBuilder, dynamic loader.Sym)

	// DynamicReadOnly can be set to true to make the .dynamic
	// section read-only. By default it is writable.
	// This is used by MIPS targets.
	DynamicReadOnly bool
}

ELFArch includes target-specific hooks for ELF targets. This is initialized by the target-specific Init function called by the linker's main function in cmd/link/main.go.

type ElfEhdr 

type ElfEhdr elf.Header64

* ELF header.

type ElfPhdr 

type ElfPhdr elf.ProgHeader

* Program header.

type ElfShdr 

type ElfShdr struct {
	elf.Section64
	// contains filtered or unexported fields
}

* Section header.

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 ErrorReporter 

type ErrorReporter struct {
	loader.ErrorReporter

	SymName symNameFn
	// contains filtered or unexported fields
}

ErrorReporter is used to make error reporting thread safe.

type GCProg 

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

func (*GCProg) AddSym 

func (p *GCProg) AddSym(s loader.Sym)

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_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_IMPORT_DESCRIPTOR 

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

type Imp 

type Imp struct {
	// contains filtered or unexported fields
}
type Link struct {
	Target
	ErrorReporter
	ArchSyms

	Out *OutBuf

	Debugvlog int
	Bso       *bufio.Writer

	Loaded bool

	Libdir       []string
	Library      []*sym.Library
	LibraryByPkg map[string]*sym.Library
	Shlibs       []Shlib
	Textp        []loader.Sym
	Moduledata   loader.Sym

	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 

func (ctxt *Link) AddTramp(s *loader.SymbolBuilder)

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

func (*Link) CanUsePlugins 

func (ctxt *Link) CanUsePlugins() bool

CanUsePlugins reports whether a plugins can be used

func (*Link) DynlinkingGo 

func (ctxt *Link) DynlinkingGo() bool

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

func (*Link) Errorf 

func (ctxt *Link) Errorf(s loader.Sym, format string, args ...interface{})

Errorf method 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 (*Link) IncVersion 

func (ctxt *Link) IncVersion() int

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

func (*Link) Logf 

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

func (*Link) MaxVersion 

func (ctxt *Link) MaxVersion() int

returns the maximum version number

func (*Link) NeedCodeSign 

func (ctxt *Link) NeedCodeSign() bool

NeedCodeSign reports whether we need to code-sign the output binary.

type LinkMode 

type LinkMode uint8

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

const (
	LinkAuto LinkMode = iota
	LinkInternal
	LinkExternal
)

func (*LinkMode) Set 

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

func (*LinkMode) String 

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 MachoPlatform 

type MachoPlatform int
const (
	PLATFORM_MACOS    MachoPlatform = 1
	PLATFORM_IOS      MachoPlatform = 2
	PLATFORM_TVOS     MachoPlatform = 3
	PLATFORM_WATCHOS  MachoPlatform = 4
	PLATFORM_BRIDGEOS MachoPlatform = 5
)

type MachoPlatformLoad 

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

MachoPlatformLoad represents a LC_VERSION_MIN_* or LC_BUILD_VERSION load command.

type MachoSect 

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

type MachoSeg 

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

type OutBuf 

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

OutBuf is a buffered file writer.

It is similar to the Writer in cmd/internal/bio with a few small differences.

First, it tracks the output architecture and uses it to provide endian helpers.

Second, it provides a very cheap offset counter that doesn't require any system calls to read the value.

Third, it also mmaps the output file (if available). The intended usage is:

  • Mmap the output file
  • Write the content
  • possibly apply any edits in the output buffer
  • possibly write more content to the file. These writes take place in a heap backed buffer that will get synced to disk.
  • Munmap the output file

And finally, it provides a mechanism by which you can multithread the writing of output files. This mechanism is accomplished by copying a OutBuf, and using it in the thread/goroutine.

Parallel OutBuf is intended to be used like: 

func write(out *OutBuf) {
  var wg sync.WaitGroup
  for i := 0; i < 10; i++ {
    wg.Add(1)
    view, err := out.View(start[i])
    if err != nil {
       // handle output
       continue
    }
    go func(out *OutBuf, i int) {
      // do output
      wg.Done()
    }(view, i)
  }
  wg.Wait()
}

func NewOutBuf 

func NewOutBuf(arch *sys.Arch) *OutBuf

func (*OutBuf) Close 

func (out *OutBuf) Close() error

func (*OutBuf) Data 

func (out *OutBuf) Data() []byte

Data returns the whole written OutBuf as a byte slice.

func (*OutBuf) ErrorClose 

func (out *OutBuf) ErrorClose()

ErrorClose closes the output file (if any). It is supposed to be called only at exit on error, so it doesn't do any clean up or buffer flushing, just closes the file.

func (*OutBuf) Mmap 

func (out *OutBuf) Mmap(filesize uint64) (err error)

Mmap maps the output file with the given size. It unmaps the old mapping if it is already mapped. It also flushes any in-heap data to the new mapping.

func (*OutBuf) Offset 

func (out *OutBuf) Offset() int64

func (*OutBuf) Open 

func (out *OutBuf) Open(name string) error

func (*OutBuf) SeekSet 

func (out *OutBuf) SeekSet(p int64)

func (*OutBuf) View 

func (out *OutBuf) View(start uint64) (*OutBuf, error)

func (*OutBuf) Write 

func (out *OutBuf) Write(v []byte) (int, error)

Write writes the contents of v to the buffer.

func (*OutBuf) Write16 

func (out *OutBuf) Write16(v uint16)

func (*OutBuf) Write32 

func (out *OutBuf) Write32(v uint32)

func (*OutBuf) Write32b 

func (out *OutBuf) Write32b(v uint32)

func (*OutBuf) Write64 

func (out *OutBuf) Write64(v uint64)

func (*OutBuf) Write64b 

func (out *OutBuf) Write64b(v uint64)

func (*OutBuf) Write8 

func (out *OutBuf) Write8(v uint8)

func (*OutBuf) WriteByte 

func (out *OutBuf) WriteByte(v byte) error

WriteByte is an alias for Write8 to fulfill the io.ByteWriter interface.

func (*OutBuf) WriteString 

func (out *OutBuf) WriteString(s string)

func (*OutBuf) WriteStringN 

func (out *OutBuf) WriteStringN(s string, n int)

WriteStringN writes the first n bytes of s. If n is larger than len(s) then it is padded with zero bytes.

func (*OutBuf) WriteStringPad 

func (out *OutBuf) WriteStringPad(s string, n int, pad []byte)

WriteStringPad writes the first n bytes of s. If n is larger than len(s) then it is padded with the bytes in pad (repeated as needed).

func (*OutBuf) WriteSym 

func (out *OutBuf) WriteSym(ldr *loader.Loader, s loader.Sym) []byte

WriteSym writes the content of a Symbol, and returns the output buffer that we just wrote, so we can apply further edit to the symbol content. For generator symbols, it also sets the symbol's Data to the output buffer.

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 Shlib 

type Shlib struct {
	Path string
	Hash []byte
	Deps []string
	File *elf.File
}

type SymbolType 

type SymbolType int8
const (
	// see also https://9p.io/magic/man2html/1/nm
	TextSym      SymbolType = 'T'
	DataSym      SymbolType = 'D'
	BSSSym       SymbolType = 'B'
	UndefinedSym SymbolType = 'U'
	TLSSym       SymbolType = 't'
	FrameSym     SymbolType = 'm'
	ParamSym     SymbolType = 'p'
	AutoSym      SymbolType = 'a'

	// Deleted auto (not a real sym, just placeholder for type)
	DeletedAutoSym = 'x'
)

type Target 

type Target struct {
	Arch *sys.Arch

	HeadType objabi.HeadType

	LinkMode  LinkMode
	BuildMode BuildMode

	IsELF bool
	// contains filtered or unexported fields
}

Target holds the configuration we're building for.

func (*Target) CanUsePlugins 

func (t *Target) CanUsePlugins() bool

func (*Target) Is386 

func (t *Target) Is386() bool

func (*Target) IsAIX 

func (t *Target) IsAIX() bool

func (*Target) IsAMD64 

func (t *Target) IsAMD64() bool

func (*Target) IsARM 

func (t *Target) IsARM() bool

func (*Target) IsARM64 

func (t *Target) IsARM64() bool

func (*Target) IsBigEndian 

func (t *Target) IsBigEndian() bool

func (*Target) IsDarwin 

func (t *Target) IsDarwin() bool

func (*Target) IsDynlinkingGo 

func (t *Target) IsDynlinkingGo() bool

func (*Target) IsElf 

func (t *Target) IsElf() bool

func (*Target) IsExe 

func (t *Target) IsExe() bool

func (*Target) IsExternal 

func (t *Target) IsExternal() bool

func (*Target) IsFreebsd 

func (t *Target) IsFreebsd() bool

func (*Target) IsInternal 

func (t *Target) IsInternal() bool

func (*Target) IsLOONG64 

func (t *Target) IsLOONG64() bool

func (*Target) IsLinux 

func (t *Target) IsLinux() bool

func (*Target) IsMIPS 

func (t *Target) IsMIPS() bool

func (*Target) IsMIPS64 

func (t *Target) IsMIPS64() bool

func (*Target) IsNetbsd 

func (t *Target) IsNetbsd() bool

func (*Target) IsOpenbsd 

func (t *Target) IsOpenbsd() bool

func (*Target) IsPIE 

func (t *Target) IsPIE() bool

func (*Target) IsPPC64 

func (t *Target) IsPPC64() bool

func (*Target) IsPlan9 

func (t *Target) IsPlan9() bool

func (*Target) IsPlugin 

func (t *Target) IsPlugin() bool

func (*Target) IsRISCV64 

func (t *Target) IsRISCV64() bool

func (*Target) IsS390X 

func (t *Target) IsS390X() bool

func (*Target) IsShared 

func (t *Target) IsShared() bool
func (t *Target) IsSharedGoLink() bool

func (*Target) IsSolaris 

func (t *Target) IsSolaris() bool

func (*Target) IsWasm 

func (t *Target) IsWasm() bool

func (*Target) IsWindows 

func (t *Target) IsWindows() bool

func (*Target) UseRelro 

func (t *Target) UseRelro() bool

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

func (*Target) UsesLibc 

func (t *Target) UsesLibc() bool

type XcoffAoutHdr64 

type XcoffAoutHdr64 struct {
	Omagic      int16
	Ovstamp     int16
	Odebugger   uint32
	Otextstart  uint64
	Odatastart  uint64
	Otoc        uint64
	Osnentry    int16
	Osntext     int16
	Osndata     int16
	Osntoc      int16
	Osnloader   int16
	Osnbss      int16
	Oalgntext   int16
	Oalgndata   int16
	Omodtype    [2]byte
	Ocpuflag    uint8
	Ocputype    uint8
	Otextpsize  uint8
	Odatapsize  uint8
	Ostackpsize uint8
	Oflags      uint8
	Otsize      uint64
	Odsize      uint64
	Obsize      uint64
	Oentry      uint64
	Omaxstack   uint64
	Omaxdata    uint64
	Osntdata    int16
	Osntbss     int16
	Ox64flags   uint16
	Oresv3a     int16
	Oresv3      [2]int32
}

Auxiliary Header

type XcoffAuxCSect64 

type XcoffAuxCSect64 struct {
	Xscnlenlo uint32
	Xparmhash uint32
	Xsnhash   uint16
	Xsmtyp    uint8
	Xsmclas   uint8
	Xscnlenhi uint32
	Xpad      uint8
	Xauxtype  uint8
}

csect Auxiliary Entry.

type XcoffAuxDWARF64 

type XcoffAuxDWARF64 struct {
	Xscnlen  uint64
	X_pad    [9]byte
	Xauxtype uint8
}

DWARF Auxiliary Entry

type XcoffAuxFcn64 

type XcoffAuxFcn64 struct {
	Xlnnoptr uint64
	Xfsize   uint32
	Xendndx  uint32
	Xpad     uint8
	Xauxtype uint8
}

Function Auxiliary Entry

type XcoffAuxFile64 

type XcoffAuxFile64 struct {
	Xzeroes  uint32
	Xoffset  uint32
	X_pad1   [6]byte
	Xftype   uint8
	X_pad2   [2]byte
	Xauxtype uint8
}

File Auxiliary Entry

type XcoffFileHdr64 

type XcoffFileHdr64 struct {
	Fmagic   uint16
	Fnscns   uint16
	Ftimedat int32
	Fsymptr  uint64
	Fopthdr  uint16
	Fflags   uint16
	Fnsyms   int32
}

File Header

type XcoffLdHdr64 

type XcoffLdHdr64 struct {
	Lversion int32
	Lnsyms   int32
	Lnreloc  int32
	Listlen  uint32
	Lnimpid  int32
	Lstlen   uint32
	Limpoff  uint64
	Lstoff   uint64
	Lsymoff  uint64
	Lrldoff  uint64
}

Loader Header

type XcoffLdImportFile64 

type XcoffLdImportFile64 struct {
	Limpidpath string
	Limpidbase string
	Limpidmem  string
}

type XcoffLdRel64 

type XcoffLdRel64 struct {
	Lvaddr  uint64
	Lrtype  uint16
	Lrsecnm int16
	Lsymndx int32
}

type XcoffLdStr64 

type XcoffLdStr64 struct {
	// contains filtered or unexported fields
}

type XcoffLdSym64 

type XcoffLdSym64 struct {
	Lvalue  uint64
	Loffset uint32
	Lscnum  int16
	Lsmtype int8
	Lsmclas int8
	Lifile  int32
	Lparm   uint32
}

Loader Symbol

type XcoffScnHdr64 

type XcoffScnHdr64 struct {
	Sname    [8]byte
	Spaddr   uint64
	Svaddr   uint64
	Ssize    uint64
	Sscnptr  uint64
	Srelptr  uint64
	Slnnoptr uint64
	Snreloc  uint32
	Snlnno   uint32
	Sflags   uint32
}

Section Header

type XcoffSymEnt64 

type XcoffSymEnt64 struct {
	Nvalue  uint64
	Noffset uint32
	Nscnum  int16
	Ntype   uint16
	Nsclass uint8
	Nnumaux int8
}

Symbol Table Entry

Source Files

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