obj

package
v0.0.0-...-6d44844 Latest Latest
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This package is not in the latest version of its module.

 Go to latest Published: Mar 19, 2015 License: BSD-3-Clause Imports: 15 Imported by: 0

Documentation

Index

Constants

View Source 
const (
	FmtWidth    = 1
	FmtLeft     = FmtWidth << 1
	FmtPrec     = FmtLeft << 1
	FmtSharp    = FmtPrec << 1
	FmtSpace    = FmtSharp << 1
	FmtSign     = FmtSpace << 1
	FmtApost    = FmtSign << 1
	FmtZero     = FmtApost << 1
	FmtUnsigned = FmtZero << 1
	FmtShort    = FmtUnsigned << 1
	FmtLong     = FmtShort << 1
	FmtVLong    = FmtLong << 1
	FmtComma    = FmtVLong << 1
	FmtByte     = FmtComma << 1
	FmtLDouble  = FmtByte << 1
	FmtFlag     = FmtLDouble << 1
)
View Source 
const (
	PCDATA_StackMapIndex       = 0
	FUNCDATA_ArgsPointerMaps   = 0
	FUNCDATA_LocalsPointerMaps = 1
	FUNCDATA_DeadValueMaps     = 2
	ArgsSizeUnknown            = -0x80000000
)

ArgsSizeUnknown is set in Func.argsize to mark all functions whose argument size is unknown (C vararg functions, and assembly code without an explicit specification). This value is generated by the compiler, assembler, or linker.

View Source 
const (
	OREAD = iota
	OWRITE
	ORDWR
	SIGBUS
	SIGSEGV
	NDFLT
	FPPDBL
	FPRNR
	HEADER_IO
	BOM = 0xFEFF
)
View Source 
const (
	NAME_NONE = 0 + iota
	NAME_EXTERN
	NAME_STATIC
	NAME_AUTO
	NAME_PARAM
)
View Source 
const (
	TYPE_BRANCH = 5 + iota
	TYPE_TEXTSIZE
	TYPE_MEM
	TYPE_CONST
	TYPE_FCONST
	TYPE_SCONST
	TYPE_REG
	TYPE_ADDR
	TYPE_SHIFT
	TYPE_REGREG
	TYPE_REGREG2
	TYPE_INDIR
	TYPE_REGLIST
)
View Source 
const (
	AXXX = 0 + iota
	ACALL
	ACHECKNIL
	ADATA
	ADUFFCOPY
	ADUFFZERO
	AEND
	AFUNCDATA
	AGLOBL
	AJMP
	ANOP
	APCDATA
	ARET
	ATEXT
	ATYPE
	AUNDEF
	AUSEFIELD
	AVARDEF
	AVARKILL
	A_ARCHSPECIFIC
)

Prog.as opcodes. These are the portable opcodes, common to all architectures. Each architecture defines many more arch-specific opcodes, with values starting at A_ARCHSPECIFIC. Each architecture adds an offset to this so each machine has distinct space for its instructions. The offset is a power of two so it can be masked to return to origin zero. See the definitions of ABase386 etc.

View Source 
const (
	Sxxx = iota
	STEXT
	SELFRXSECT
	STYPE
	SSTRING
	SGOSTRING
	SGOFUNC
	SRODATA
	SFUNCTAB
	STYPELINK
	SSYMTAB
	SPCLNTAB
	SELFROSECT
	SMACHOPLT
	SELFSECT
	SMACHO
	SMACHOGOT
	SWINDOWS
	SELFGOT
	SNOPTRDATA
	SINITARR
	SDATA
	SBSS
	SNOPTRBSS
	STLSBSS
	SXREF
	SMACHOSYMSTR
	SMACHOSYMTAB
	SMACHOINDIRECTPLT
	SMACHOINDIRECTGOT
	SFILE
	SFILEPATH
	SCONST
	SDYNIMPORT
	SHOSTOBJ
	SSUB    = 1 << 8
	SMASK   = SSUB - 1
	SHIDDEN = 1 << 9
)

LSym.type

View Source 
const (
	R_ADDR = 1 + iota
	R_ADDRPOWER
	R_SIZE
	R_CALL
	R_CALLARM
	R_CALLARM64
	R_CALLIND
	R_CALLPOWER
	R_CONST
	R_PCREL
	R_TLS
	R_TLS_LE
	R_TLS_IE
	R_GOTOFF
	R_PLT0
	R_PLT1
	R_PLT2
	R_USEFIELD
	R_POWER_TOC
)

Reloc.type

View Source 
const (
	RV_NONE = iota
	RV_POWER_LO
	RV_POWER_HI
	RV_POWER_HA
	RV_POWER_DS
	RV_CHECK_OVERFLOW = 1 << 8
	RV_TYPE_MASK      = RV_CHECK_OVERFLOW - 1
)

Reloc.variant

View Source 
const (
	A_AUTO = 1 + iota
	A_PARAM
)

Auto.name

View Source 
const (
	Hunknown = 0 + iota
	Hdarwin
	Hdragonfly
	Helf
	Hfreebsd
	Hlinux
	Hnacl
	Hnetbsd
	Hopenbsd
	Hplan9
	Hsolaris
	Hwindows
)

executable header types

View Source 
const (
	LinkAuto = 0 + iota
	LinkInternal
	LinkExternal
)
View Source 
const (
	GcBits          = 4
	BitsPerPointer  = 2
	BitsDead        = 0
	BitsScalar      = 1
	BitsPointer     = 2
	BitsMask        = 3
	PointersPerByte = 8 / BitsPerPointer
)
View Source 
const (
	InsData = 1 + iota
	InsArray
	InsArrayEnd
	InsEnd
	MaxGCMask = 65536
)
View Source 
const (
	STACKSYSTEM = 0
	StackSystem = STACKSYSTEM
	StackBig    = 4096
	StackGuard  = 640 + StackSystem
	StackSmall  = 128
	StackLimit  = StackGuard - StackSystem - StackSmall
)
View Source 
const (
	// Don't profile the marked routine.  This flag is deprecated.
	NOPROF = 1

	// It is ok for the linker to get multiple of these symbols.  It will
	// pick one of the duplicates to use.
	DUPOK = 2

	// Don't insert stack check preamble.
	NOSPLIT = 4

	// Put this data in a read-only section.
	RODATA = 8

	// This data contains no pointers.
	NOPTR = 16

	// This is a wrapper function and should not count as disabling 'recover'.
	WRAPPER = 32

	// This function uses its incoming context register.
	NEEDCTXT = 64
)
View Source 
const (
	KindBool = 1 + iota
	KindInt
	KindInt8
	KindInt16
	KindInt32
	KindInt64
	KindUint
	KindUint8
	KindUint16
	KindUint32
	KindUint64
	KindUintptr
	KindFloat32
	KindFloat64
	KindComplex64
	KindComplex128
	KindArray
	KindChan
	KindFunc
	KindInterface
	KindMap
	KindPtr
	KindSlice
	KindString
	KindStruct
	KindUnsafePointer
	KindDirectIface = 1 << 5
	KindGCProg      = 1 << 6
	KindNoPointers  = 1 << 7
	KindMask        = (1 << 5) - 1
)
View Source 
const (
	C_SCOND     = (1 << 4) - 1
	C_SBIT      = 1 << 4
	C_PBIT      = 1 << 5
	C_WBIT      = 1 << 6
	C_FBIT      = 1 << 7
	C_UBIT      = 1 << 7
	C_SCOND_XOR = 14
)

ARM scond byte

View Source 
const (
	// Because of masking operations in the encodings, each register
	// space should start at 0 modulo some power of 2.
	RBase386   = 1 * 1024
	RBaseAMD64 = 2 * 1024
	RBaseARM   = 3 * 1024
	RBasePPC64 = 4 * 1024 // range [4k, 8k)
	RBaseARM64 = 8 * 1024 // range [8k, 12k)
)
View Source 
const (
	ABase386 = (1 + iota) << 12
	ABaseARM
	ABaseAMD64
	ABasePPC64
	ABaseARM64
	AMask = 1<<12 - 1 // AND with this to use the opcode as an array index.
)
View Source 
const (
	AEXIST = 0
)
View Source 
const Beof = -1
View Source 
const (
	HistVersion = 1
)

symbol version, incremented each time a file is loaded. version==1 is reserved for savehist.

View Source 
const (
	LOG = 5
)
View Source 
const REG_NONE = 0
View Source 
const (
	StackPreempt = -1314 // 0xfff...fade
)
View Source 
const (
	TYPE_NONE = 0
)

Variables

View Source 
var Anames = []string{
	"XXX",
	"CALL",
	"CHECKNIL",
	"DATA",
	"DUFFCOPY",
	"DUFFZERO",
	"END",
	"FUNCDATA",
	"GLOBL",
	"JMP",
	"NOP",
	"PCDATA",
	"RET",
	"TEXT",
	"TYPE",
	"UNDEF",
	"USEFIELD",
	"VARDEF",
	"VARKILL",
}
View Source 
var Fieldtrack_enabled int
View Source 
var Framepointer_enabled int
View Source 
var GOEXPERIMENT string

Functions

func Access 

func Access(name string, mode int) int

func Aconv 

func Aconv(a int) string

func Adduint32 

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

func Adduint64 

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

func Atoi 

func Atoi(s string) int

func Bflush 

func Bflush(b *Biobuf) error

func Bgetc 

func Bgetc(b *Biobuf) int

func Bgetrune 

func Bgetrune(b *Biobuf) int

func Blinelen 

func Blinelen(b *Biobuf) int

func Boffset 

func Boffset(b *Biobuf) int64

func Bputc 

func Bputc(b *Biobuf, c byte)

func Brdline 

func Brdline(b *Biobuf, delim int) string

func Brdstr 

func Brdstr(b *Biobuf, delim int, cut int) string

func Bread 

func Bread(b *Biobuf, p []byte) int

func Bseek 

func Bseek(b *Biobuf, offset int64, whence int) int64

func Bterm 

func Bterm(b *Biobuf) error

func Bungetc 

func Bungetc(b *Biobuf)

func Bungetrune 

func Bungetrune(b *Biobuf)

func Bwrite 

func Bwrite(b *Biobuf, p []byte) (int, error)

func Bwritestring 

func Bwritestring(b *Biobuf, p string) (int, error)

func CConv 

func CConv(s uint8) string

CConv formats ARM condition codes.

func Cputime 

func Cputime() float64

func Dconv 

func Dconv(p *Prog, a *Addr) string

func Expandpkg 

func Expandpkg(t0 string, pkg string) string

replace all "". with pkg.

func Expstring 

func Expstring() string

* lex.c

func Flagcount 

func Flagcount(name, usage string, val *int)

func Flagfn0 

func Flagfn0(name, usage string, f func())

func Flagfn1 

func Flagfn1(name, usage string, f func(string))

func Flagfn2 

func Flagfn2(string, string, func(string, string))

func Flagint32 

func Flagint32(name, usage string, val *int32)

func Flagint64 

func Flagint64(name, usage string, val *int64)

func Flagparse 

func Flagparse(usage func())

func Flagprint 

func Flagprint(fd int)

func Flagstr 

func Flagstr(name, usage string, val *string)

func Getcallerpc 

func Getcallerpc(interface{}) uintptr

func Getgo386 

func Getgo386() string

func Getgoarch 

func Getgoarch() string

func Getgoarm 

func Getgoarm() string

func Getgoextlinkenabled 

func Getgoextlinkenabled() string

func Getgoos 

func Getgoos() string

func Getgoroot 

func Getgoroot() string

func Getgoversion 

func Getgoversion() string

func Headstr 

func Headstr(v int) string

func Linklinefmt 

func Linklinefmt(ctxt *Link, lineno int, showAll, showFullPath bool) string

TODO(rsc): Replace call sites with use of ctxt.LineHist. Note that all call sites use showAll=false, showFullPath=false.

func Linklinehist 

func Linklinehist(ctxt *Link, lineno int, f string, n int)

Linklinehist pushes, amends, or pops an entry on the line history stack. If f != "<pop>" and n == 0, the call pushes the start of a new file named f at lineno. If f != "<pop>" and n > 0, the call amends the top of the stack to record that lineno now corresponds to f at line n. If f == "<pop>", the call pops the topmost entry from the stack, picking up the parent file at the line following the one where the corresponding push occurred.

If n < 0, linklinehist records f as a package required by the current compilation (nothing to do with line numbers).

TODO(rsc): Replace uses with direct calls to ctxt.Hist methods.

func Linkprfile 

func Linkprfile(ctxt *Link, line int)

func Linksymfmt 

func Linksymfmt(s *LSym) string

func Mconv 

func Mconv(a *Addr) string

func Nocache 

func Nocache(p *Prog)

func Nopout 

func Nopout(p *Prog)

func Rconv 

func Rconv(reg int) string

func RegisterOpcode 

func RegisterOpcode(lo int, Anames []string)

RegisterOpcode binds a list of instruction names to a given instruction number range.

func RegisterRegister 

func RegisterRegister(lo, hi int, Rconv func(int) string)

RegisterRegister binds a pretty-printer (Rconv) for register numbers to a given register number range. Lo is inclusive, hi exclusive (valid registers are lo through hi-1).

func Setuintxx 

func Setuintxx(ctxt *Link, s *LSym, off int64, v uint64, wid int64) int64

func Symgrow 

func Symgrow(ctxt *Link, s *LSym, lsiz int64)

func Writeobjdirect 

func Writeobjdirect(ctxt *Link, b *Biobuf)

The Go and C compilers, and the assembler, call writeobj to write out a Go object file. The linker does not call this; the linker does not write out object files.

Types

type Addr 

type Addr struct {
	Type   int16
	Reg    int16
	Reg2   int16 // RHS of register pair. AX:DX (386)
	Index  int16
	Scale  int16 // Sometimes holds a register.
	Name   int8
	Offset int64
	Sym    *LSym
	U      struct {
		Sval    string
		Dval    float64
		Branch  *Prog
		Argsize int32
		Bits    uint64
	}
	Gotype *LSym
	Class  int8
	Etype  uint8
	Node   interface{}
	Width  int64
}

type Auto 

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

type Biobuf 

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

func Binitw 

func Binitw(w io.Writer) *Biobuf

func Bopenr 

func Bopenr(name string) (*Biobuf, error)

func Bopenw 

func Bopenw(name string) (*Biobuf, error)

func (*Biobuf) Flush 

func (b *Biobuf) Flush() error

func (*Biobuf) Read 

func (b *Biobuf) Read(p []byte) (int, error)

func (*Biobuf) Write 

func (b *Biobuf) Write(p []byte) (int, error)

type LSym 

type LSym struct {
	Name        string
	Extname     string
	Type        int16
	Version     int16
	Dupok       uint8
	Cfunc       uint8
	External    uint8
	Nosplit     uint8
	Reachable   uint8
	Cgoexport   uint8
	Special     uint8
	Stkcheck    uint8
	Hide        uint8
	Leaf        uint8
	Fnptr       uint8
	Localentry  uint8
	Seenglobl   uint8
	Onlist      uint8
	Printed     uint8
	Symid       int16
	Dynid       int32
	Plt         int32
	Got         int32
	Align       int32
	Elfsym      int32
	Args        int32
	Locals      int32
	Value       int64
	Size        int64
	Allsym      *LSym
	Next        *LSym
	Sub         *LSym
	Outer       *LSym
	Gotype      *LSym
	Reachparent *LSym
	Queue       *LSym
	File        string
	Dynimplib   string
	Dynimpvers  string
	Sect        *struct{}
	Autom       *Auto
	Text        *Prog
	Etext       *Prog
	Pcln        *Pcln
	P           []byte
	R           []Reloc
}

func Linklookup 

func Linklookup(ctxt *Link, name string, v int) *LSym

type Library 

type Library struct {
	Objref string
	Srcref string
	File   string
	Pkg    string
}

type LineHist 

type LineHist struct {
	Top            *LineStack  // current top of stack
	Ranges         []LineRange // ranges for lookup
	Dir            string      // directory to qualify relative paths
	TrimPathPrefix string      // remove leading TrimPath from recorded file names
	GOROOT         string      // current GOROOT
	GOROOT_FINAL   string      // target GOROOT
}

A LineHist records the history of the file input stack, which maps the virtual line number, an incrementing count of lines processed in any input file and typically named lineno, to a stack of file:line pairs showing the path of inclusions that led to that position. The first line directive (//line in Go, #line in assembly) is treated as pushing a new entry on the stack, so that errors can report both the actual and translated line number.

In typical use, the virtual lineno begins at 1, and file line numbers also begin at 1, but the only requirements placed upon the numbers by this code are:

  • calls to Push, Update, and Pop must be monotonically increasing in lineno
  • except as specified by those methods, virtual and file line number increase together, so that given (only) calls Push(10, "x.go", 1) and Pop(15), virtual line 12 corresponds to x.go line 3.

func (*LineHist) AbsFileLine 

func (h *LineHist) AbsFileLine(lineno int) (file string, line int)

AbsFileLine returns the absolute file name and line number at the top of the stack for the given lineno.

func (*LineHist) At 

func (h *LineHist) At(lineno int) *LineStack

At returns the input stack in effect at lineno.

func (*LineHist) FileLine 

func (h *LineHist) FileLine(lineno int) (file string, line int)

FileLine returns the file name and line number at the top of the stack for the given lineno.

func (*LineHist) LineString 

func (h *LineHist) LineString(lineno int) string

LineString returns a string giving the file and line number corresponding to lineno, for use in error messages.

func (*LineHist) Pop 

func (h *LineHist) Pop(lineno int)

Pop records that at lineno the current file was popped from the input stack.

func (*LineHist) Push 

func (h *LineHist) Push(lineno int, file string)

Push records that at that lineno a new file with the given name was pushed onto the input stack.

func (*LineHist) Update 

func (h *LineHist) Update(lineno int, file string, line int)

Update records that at lineno the file name and line number were changed using a line directive (//line in Go, #line in assembly).

type LineRange 

type LineRange struct {
	Start int        // starting lineno
	Stack *LineStack // top of stack for this range
}

The span of valid linenos in the recorded line history can be broken into a set of ranges, each with a particular stack. A LineRange records one such range.

type LineStack 

type LineStack struct {
	Parent    *LineStack // parent in inclusion stack
	Lineno    int        // virtual line number where this entry takes effect
	File      string     // file name used to open source file, for error messages
	AbsFile   string     // absolute file name, for pcln tables
	FileLine  int        // line number in file at Lineno
	Directive bool
	Sym       *LSym // for linkgetline - TODO(rsc): remove
}

A LineStack is an entry in the recorded line history. Although the history at any given line number is a stack, the record for all line processed forms a tree, with common stack prefixes acting as parents. 

type Link struct {
	Thechar            int32
	Thestring          string
	Goarm              int32
	Headtype           int
	Arch               *LinkArch
	Ignore             func(string) int32
	Debugasm           int32
	Debugline          int32
	Debughist          int32
	Debugread          int32
	Debugvlog          int32
	Debugstack         int32
	Debugzerostack     int32
	Debugdivmod        int32
	Debugfloat         int32
	Debugpcln          int32
	Flag_shared        int32
	Iself              int32
	Bso                *Biobuf
	Pathname           string
	Windows            int32
	Trimpath           string
	Goroot             string
	Goroot_final       string
	Enforce_data_order int32
	Hash               map[SymVer]*LSym
	Allsym             *LSym
	Nsymbol            int32
	LineHist           LineHist
	Imports            []string
	Plist              *Plist
	Plast              *Plist
	Sym_div            *LSym
	Sym_divu           *LSym
	Sym_mod            *LSym
	Sym_modu           *LSym
	Symmorestack       [2]*LSym
	Tlsg               *LSym
	Plan9privates      *LSym
	Curp               *Prog
	Printp             *Prog
	Blitrl             *Prog
	Elitrl             *Prog
	Rexflag            int
	Rep                int
	Repn               int
	Lock               int
	Asmode             int
	Andptr             []byte
	And                [100]uint8
	Instoffset         int64
	Autosize           int32
	Armsize            int32
	Pc                 int64
	Libdir             []string
	Library            []Library
	Tlsoffset          int
	Diag               func(string, ...interface{})
	Mode               int
	Curauto            *Auto
	Curhist            *Auto
	Cursym             *LSym
	Version            int
	Textp              *LSym
	Etextp             *LSym
	Histdepth          int32
	Nhistfile          int32
	Filesyms           *LSym
}

func Linknew 

func Linknew(arch *LinkArch) *Link

func (*Link) AddImport 

func (ctxt *Link) AddImport(pkg string)

AddImport adds a package to the list of imported packages.

func (*Link) Dconv 

func (ctxt *Link) Dconv(a *Addr) string

func (*Link) Line 

func (ctxt *Link) Line(n int) string

func (*Link) NewProg 

func (ctxt *Link) NewProg() *Prog

type LinkArch 

type LinkArch struct {
	ByteOrder  binary.ByteOrder
	Name       string
	Thechar    int
	Preprocess func(*Link, *LSym)
	Assemble   func(*Link, *LSym)
	Follow     func(*Link, *LSym)
	Progedit   func(*Link, *Prog)
	UnaryDst   map[int]bool // Instruction takes one operand, a destination.
	Minlc      int
	Ptrsize    int
	Regsize    int
}

type Pcdata 

type Pcdata struct {
	P []byte
}

type Pciter 

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

type Pcln 

type Pcln struct {
	Pcsp        Pcdata
	Pcfile      Pcdata
	Pcline      Pcdata
	Pcdata      []Pcdata
	Funcdata    []*LSym
	Funcdataoff []int64
	File        []*LSym
	Lastfile    *LSym
	Lastindex   int
}

type Plist 

type Plist struct {
	Name    *LSym
	Firstpc *Prog
	Recur   int
	Link    *Plist
}

func Linknewplist 

func Linknewplist(ctxt *Link) *Plist

* start a new Prog list.

type Prog 

type Prog struct {
	Ctxt     *Link
	Pc       int64
	Lineno   int32
	Link     *Prog
	As       int16
	Scond    uint8
	From     Addr
	Reg      int16
	From3    Addr
	To       Addr
	To2      Addr
	Opt      interface{}
	Forwd    *Prog
	Pcond    *Prog
	Comefrom *Prog
	Pcrel    *Prog
	Spadj    int32
	Mark     uint16
	Optab    uint16
	Back     uint8
	Ft       uint8
	F3t      uint8
	Tt       uint8
	Isize    uint8
	Printed  uint8
	Width    int8
	Mode     int8
}

func Appendp 

func Appendp(ctxt *Link, q *Prog) *Prog

func Brchain 

func Brchain(ctxt *Link, p *Prog) *Prog

func Copyp 

func Copyp(ctxt *Link, q *Prog) *Prog

func (*Prog) Line 

func (p *Prog) Line() string

func (*Prog) String 

func (p *Prog) String() string

type Reloc 

type Reloc struct {
	Off     int32
	Siz     uint8
	Done    uint8
	Type    int32
	Variant int32
	Add     int64
	Xadd    int64
	Sym     *LSym
	Xsym    *LSym
}

func Addrel 

func Addrel(s *LSym) *Reloc

type SymVer 

type SymVer struct {
	Name    string
	Version int
}

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