[chore] remove vendor

1 files changed, 0 insertions, 1650 deletions

diff --git a/vendor/github.com/twitchyliquid64/golang-asm/dwarf/dwarf.go b/vendor/github.com/twitchyliquid64/golang-asm/dwarf/dwarf.go
deleted file mode 100644
index 2fee79d38..000000000
--- a/vendor/github.com/twitchyliquid64/golang-asm/dwarf/dwarf.go
+++ /dev/null
@@ -1,1650 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-// Package dwarf generates DWARF debugging information.
-// DWARF generation is split between the compiler and the linker,
-// this package contains the shared code.
-package dwarf
-
-import (
-	"bytes"
-	"github.com/twitchyliquid64/golang-asm/objabi"
-	"errors"
-	"fmt"
-	"os/exec"
-	"sort"
-	"strconv"
-	"strings"
-)
-
-// InfoPrefix is the prefix for all the symbols containing DWARF info entries.
-const InfoPrefix = "go.info."
-
-// ConstInfoPrefix is the prefix for all symbols containing DWARF info
-// entries that contain constants.
-const ConstInfoPrefix = "go.constinfo."
-
-// CUInfoPrefix is the prefix for symbols containing information to
-// populate the DWARF compilation unit info entries.
-const CUInfoPrefix = "go.cuinfo."
-
-// Used to form the symbol name assigned to the DWARF 'abstract subprogram"
-// info entry for a function
-const AbstractFuncSuffix = "$abstract"
-
-// Controls logging/debugging for selected aspects of DWARF subprogram
-// generation (functions, scopes).
-var logDwarf bool
-
-// Sym represents a symbol.
-type Sym interface {
-	Length(dwarfContext interface{}) int64
-}
-
-// A Var represents a local variable or a function parameter.
-type Var struct {
-	Name          string
-	Abbrev        int // Either DW_ABRV_AUTO[_LOCLIST] or DW_ABRV_PARAM[_LOCLIST]
-	IsReturnValue bool
-	IsInlFormal   bool
-	StackOffset   int32
-	// This package can't use the ssa package, so it can't mention ssa.FuncDebug,
-	// so indirect through a closure.
-	PutLocationList func(listSym, startPC Sym)
-	Scope           int32
-	Type            Sym
-	DeclFile        string
-	DeclLine        uint
-	DeclCol         uint
-	InlIndex        int32 // subtract 1 to form real index into InlTree
-	ChildIndex      int32 // child DIE index in abstract function
-	IsInAbstract    bool  // variable exists in abstract function
-}
-
-// A Scope represents a lexical scope. All variables declared within a
-// scope will only be visible to instructions covered by the scope.
-// Lexical scopes are contiguous in source files but can end up being
-// compiled to discontiguous blocks of instructions in the executable.
-// The Ranges field lists all the blocks of instructions that belong
-// in this scope.
-type Scope struct {
-	Parent int32
-	Ranges []Range
-	Vars   []*Var
-}
-
-// A Range represents a half-open interval [Start, End).
-type Range struct {
-	Start, End int64
-}
-
-// This container is used by the PutFunc* variants below when
-// creating the DWARF subprogram DIE(s) for a function.
-type FnState struct {
-	Name          string
-	Importpath    string
-	Info          Sym
-	Filesym       Sym
-	Loc           Sym
-	Ranges        Sym
-	Absfn         Sym
-	StartPC       Sym
-	Size          int64
-	External      bool
-	Scopes        []Scope
-	InlCalls      InlCalls
-	UseBASEntries bool
-}
-
-func EnableLogging(doit bool) {
-	logDwarf = doit
-}
-
-// UnifyRanges merges the list of ranges of c into the list of ranges of s
-func (s *Scope) UnifyRanges(c *Scope) {
-	out := make([]Range, 0, len(s.Ranges)+len(c.Ranges))
-
-	i, j := 0, 0
-	for {
-		var cur Range
-		if i < len(s.Ranges) && j < len(c.Ranges) {
-			if s.Ranges[i].Start < c.Ranges[j].Start {
-				cur = s.Ranges[i]
-				i++
-			} else {
-				cur = c.Ranges[j]
-				j++
-			}
-		} else if i < len(s.Ranges) {
-			cur = s.Ranges[i]
-			i++
-		} else if j < len(c.Ranges) {
-			cur = c.Ranges[j]
-			j++
-		} else {
-			break
-		}
-
-		if n := len(out); n > 0 && cur.Start <= out[n-1].End {
-			out[n-1].End = cur.End
-		} else {
-			out = append(out, cur)
-		}
-	}
-
-	s.Ranges = out
-}
-
-// AppendRange adds r to s, if r is non-empty.
-// If possible, it extends the last Range in s.Ranges; if not, it creates a new one.
-func (s *Scope) AppendRange(r Range) {
-	if r.End <= r.Start {
-		return
-	}
-	i := len(s.Ranges)
-	if i > 0 && s.Ranges[i-1].End == r.Start {
-		s.Ranges[i-1].End = r.End
-		return
-	}
-	s.Ranges = append(s.Ranges, r)
-}
-
-type InlCalls struct {
-	Calls []InlCall
-}
-
-type InlCall struct {
-	// index into ctx.InlTree describing the call inlined here
-	InlIndex int
-
-	// Symbol of file containing inlined call site (really *obj.LSym).
-	CallFile Sym
-
-	// Line number of inlined call site.
-	CallLine uint32
-
-	// Dwarf abstract subroutine symbol (really *obj.LSym).
-	AbsFunSym Sym
-
-	// Indices of child inlines within Calls array above.
-	Children []int
-
-	// entries in this list are PAUTO's created by the inliner to
-	// capture the promoted formals and locals of the inlined callee.
-	InlVars []*Var
-
-	// PC ranges for this inlined call.
-	Ranges []Range
-
-	// Root call (not a child of some other call).
-	Root bool
-}
-
-// A Context specifies how to add data to a Sym.
-type Context interface {
-	PtrSize() int
-	AddInt(s Sym, size int, i int64)
-	AddBytes(s Sym, b []byte)
-	AddAddress(s Sym, t interface{}, ofs int64)
-	AddCURelativeAddress(s Sym, t interface{}, ofs int64)
-	AddSectionOffset(s Sym, size int, t interface{}, ofs int64)
-	AddDWARFAddrSectionOffset(s Sym, t interface{}, ofs int64)
-	CurrentOffset(s Sym) int64
-	RecordDclReference(from Sym, to Sym, dclIdx int, inlIndex int)
-	RecordChildDieOffsets(s Sym, vars []*Var, offsets []int32)
-	AddString(s Sym, v string)
-	AddFileRef(s Sym, f interface{})
-	Logf(format string, args ...interface{})
-}
-
-// AppendUleb128 appends v to b using DWARF's unsigned LEB128 encoding.
-func AppendUleb128(b []byte, v uint64) []byte {
-	for {
-		c := uint8(v & 0x7f)
-		v >>= 7
-		if v != 0 {
-			c |= 0x80
-		}
-		b = append(b, c)
-		if c&0x80 == 0 {
-			break
-		}
-	}
-	return b
-}
-
-// AppendSleb128 appends v to b using DWARF's signed LEB128 encoding.
-func AppendSleb128(b []byte, v int64) []byte {
-	for {
-		c := uint8(v & 0x7f)
-		s := uint8(v & 0x40)
-		v >>= 7
-		if (v != -1 || s == 0) && (v != 0 || s != 0) {
-			c |= 0x80
-		}
-		b = append(b, c)
-		if c&0x80 == 0 {
-			break
-		}
-	}
-	return b
-}
-
-// sevenbits contains all unsigned seven bit numbers, indexed by their value.
-var sevenbits = [...]byte{
-	0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08, 0x09, 0x0a, 0x0b, 0x0c, 0x0d, 0x0e, 0x0f,
-	0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17, 0x18, 0x19, 0x1a, 0x1b, 0x1c, 0x1d, 0x1e, 0x1f,
-	0x20, 0x21, 0x22, 0x23, 0x24, 0x25, 0x26, 0x27, 0x28, 0x29, 0x2a, 0x2b, 0x2c, 0x2d, 0x2e, 0x2f,
-	0x30, 0x31, 0x32, 0x33, 0x34, 0x35, 0x36, 0x37, 0x38, 0x39, 0x3a, 0x3b, 0x3c, 0x3d, 0x3e, 0x3f,
-	0x40, 0x41, 0x42, 0x43, 0x44, 0x45, 0x46, 0x47, 0x48, 0x49, 0x4a, 0x4b, 0x4c, 0x4d, 0x4e, 0x4f,
-	0x50, 0x51, 0x52, 0x53, 0x54, 0x55, 0x56, 0x57, 0x58, 0x59, 0x5a, 0x5b, 0x5c, 0x5d, 0x5e, 0x5f,
-	0x60, 0x61, 0x62, 0x63, 0x64, 0x65, 0x66, 0x67, 0x68, 0x69, 0x6a, 0x6b, 0x6c, 0x6d, 0x6e, 0x6f,
-	0x70, 0x71, 0x72, 0x73, 0x74, 0x75, 0x76, 0x77, 0x78, 0x79, 0x7a, 0x7b, 0x7c, 0x7d, 0x7e, 0x7f,
-}
-
-// sevenBitU returns the unsigned LEB128 encoding of v if v is seven bits and nil otherwise.
-// The contents of the returned slice must not be modified.
-func sevenBitU(v int64) []byte {
-	if uint64(v) < uint64(len(sevenbits)) {
-		return sevenbits[v : v+1]
-	}
-	return nil
-}
-
-// sevenBitS returns the signed LEB128 encoding of v if v is seven bits and nil otherwise.
-// The contents of the returned slice must not be modified.
-func sevenBitS(v int64) []byte {
-	if uint64(v) <= 63 {
-		return sevenbits[v : v+1]
-	}
-	if uint64(-v) <= 64 {
-		return sevenbits[128+v : 128+v+1]
-	}
-	return nil
-}
-
-// Uleb128put appends v to s using DWARF's unsigned LEB128 encoding.
-func Uleb128put(ctxt Context, s Sym, v int64) {
-	b := sevenBitU(v)
-	if b == nil {
-		var encbuf [20]byte
-		b = AppendUleb128(encbuf[:0], uint64(v))
-	}
-	ctxt.AddBytes(s, b)
-}
-
-// Sleb128put appends v to s using DWARF's signed LEB128 encoding.
-func Sleb128put(ctxt Context, s Sym, v int64) {
-	b := sevenBitS(v)
-	if b == nil {
-		var encbuf [20]byte
-		b = AppendSleb128(encbuf[:0], v)
-	}
-	ctxt.AddBytes(s, b)
-}
-
-/*
- * Defining Abbrevs. This is hardcoded on a per-platform basis (that is,
- * each platform will see a fixed abbrev table for all objects); the number
- * of abbrev entries is fairly small (compared to C++ objects).  The DWARF
- * spec places no restriction on the ordering of attributes in the
- * Abbrevs and DIEs, and we will always write them out in the order
- * of declaration in the abbrev.
- */
-type dwAttrForm struct {
-	attr uint16
-	form uint8
-}
-
-// Go-specific type attributes.
-const (
-	DW_AT_go_kind = 0x2900
-	DW_AT_go_key  = 0x2901
-	DW_AT_go_elem = 0x2902
-	// Attribute for DW_TAG_member of a struct type.
-	// Nonzero value indicates the struct field is an embedded field.
-	DW_AT_go_embedded_field = 0x2903
-	DW_AT_go_runtime_type   = 0x2904
-
-	DW_AT_go_package_name = 0x2905 // Attribute for DW_TAG_compile_unit
-
-	DW_AT_internal_location = 253 // params and locals; not emitted
-)
-
-// Index into the abbrevs table below.
-// Keep in sync with ispubname() and ispubtype() in ld/dwarf.go.
-// ispubtype considers >= NULLTYPE public
-const (
-	DW_ABRV_NULL = iota
-	DW_ABRV_COMPUNIT
-	DW_ABRV_COMPUNIT_TEXTLESS
-	DW_ABRV_FUNCTION
-	DW_ABRV_FUNCTION_ABSTRACT
-	DW_ABRV_FUNCTION_CONCRETE
-	DW_ABRV_INLINED_SUBROUTINE
-	DW_ABRV_INLINED_SUBROUTINE_RANGES
-	DW_ABRV_VARIABLE
-	DW_ABRV_INT_CONSTANT
-	DW_ABRV_AUTO
-	DW_ABRV_AUTO_LOCLIST
-	DW_ABRV_AUTO_ABSTRACT
-	DW_ABRV_AUTO_CONCRETE
-	DW_ABRV_AUTO_CONCRETE_LOCLIST
-	DW_ABRV_PARAM
-	DW_ABRV_PARAM_LOCLIST
-	DW_ABRV_PARAM_ABSTRACT
-	DW_ABRV_PARAM_CONCRETE
-	DW_ABRV_PARAM_CONCRETE_LOCLIST
-	DW_ABRV_LEXICAL_BLOCK_RANGES
-	DW_ABRV_LEXICAL_BLOCK_SIMPLE
-	DW_ABRV_STRUCTFIELD
-	DW_ABRV_FUNCTYPEPARAM
-	DW_ABRV_DOTDOTDOT
-	DW_ABRV_ARRAYRANGE
-	DW_ABRV_NULLTYPE
-	DW_ABRV_BASETYPE
-	DW_ABRV_ARRAYTYPE
-	DW_ABRV_CHANTYPE
-	DW_ABRV_FUNCTYPE
-	DW_ABRV_IFACETYPE
-	DW_ABRV_MAPTYPE
-	DW_ABRV_PTRTYPE
-	DW_ABRV_BARE_PTRTYPE // only for void*, no DW_AT_type attr to please gdb 6.
-	DW_ABRV_SLICETYPE
-	DW_ABRV_STRINGTYPE
-	DW_ABRV_STRUCTTYPE
-	DW_ABRV_TYPEDECL
-	DW_NABRV
-)
-
-type dwAbbrev struct {
-	tag      uint8
-	children uint8
-	attr     []dwAttrForm
-}
-
-var abbrevsFinalized bool
-
-// expandPseudoForm takes an input DW_FORM_xxx value and translates it
-// into a platform-appropriate concrete form. Existing concrete/real
-// DW_FORM values are left untouched. For the moment the only
-// pseudo-form is DW_FORM_udata_pseudo, which gets expanded to
-// DW_FORM_data4 on Darwin and DW_FORM_udata everywhere else. See
-// issue #31459 for more context.
-func expandPseudoForm(form uint8) uint8 {
-	// Is this a pseudo-form?
-	if form != DW_FORM_udata_pseudo {
-		return form
-	}
-	expandedForm := DW_FORM_udata
-	if objabi.GOOS == "darwin" {
-		expandedForm = DW_FORM_data4
-	}
-	return uint8(expandedForm)
-}
-
-// Abbrevs() returns the finalized abbrev array for the platform,
-// expanding any DW_FORM pseudo-ops to real values.
-func Abbrevs() []dwAbbrev {
-	if abbrevsFinalized {
-		return abbrevs[:]
-	}
-	for i := 1; i < DW_NABRV; i++ {
-		for j := 0; j < len(abbrevs[i].attr); j++ {
-			abbrevs[i].attr[j].form = expandPseudoForm(abbrevs[i].attr[j].form)
-		}
-	}
-	abbrevsFinalized = true
-	return abbrevs[:]
-}
-
-// abbrevs is a raw table of abbrev entries; it needs to be post-processed
-// by the Abbrevs() function above prior to being consumed, to expand
-// the 'pseudo-form' entries below to real DWARF form values.
-
-var abbrevs = [DW_NABRV]dwAbbrev{
-	/* The mandatory DW_ABRV_NULL entry. */
-	{0, 0, []dwAttrForm{}},
-
-	/* COMPUNIT */
-	{
-		DW_TAG_compile_unit,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_language, DW_FORM_data1},
-			{DW_AT_stmt_list, DW_FORM_sec_offset},
-			{DW_AT_low_pc, DW_FORM_addr},
-			{DW_AT_ranges, DW_FORM_sec_offset},
-			{DW_AT_comp_dir, DW_FORM_string},
-			{DW_AT_producer, DW_FORM_string},
-			{DW_AT_go_package_name, DW_FORM_string},
-		},
-	},
-
-	/* COMPUNIT_TEXTLESS */
-	{
-		DW_TAG_compile_unit,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_language, DW_FORM_data1},
-			{DW_AT_comp_dir, DW_FORM_string},
-			{DW_AT_producer, DW_FORM_string},
-			{DW_AT_go_package_name, DW_FORM_string},
-		},
-	},
-
-	/* FUNCTION */
-	{
-		DW_TAG_subprogram,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_low_pc, DW_FORM_addr},
-			{DW_AT_high_pc, DW_FORM_addr},
-			{DW_AT_frame_base, DW_FORM_block1},
-			{DW_AT_decl_file, DW_FORM_data4},
-			{DW_AT_external, DW_FORM_flag},
-		},
-	},
-
-	/* FUNCTION_ABSTRACT */
-	{
-		DW_TAG_subprogram,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_inline, DW_FORM_data1},
-			{DW_AT_external, DW_FORM_flag},
-		},
-	},
-
-	/* FUNCTION_CONCRETE */
-	{
-		DW_TAG_subprogram,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_abstract_origin, DW_FORM_ref_addr},
-			{DW_AT_low_pc, DW_FORM_addr},
-			{DW_AT_high_pc, DW_FORM_addr},
-			{DW_AT_frame_base, DW_FORM_block1},
-		},
-	},
-
-	/* INLINED_SUBROUTINE */
-	{
-		DW_TAG_inlined_subroutine,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_abstract_origin, DW_FORM_ref_addr},
-			{DW_AT_low_pc, DW_FORM_addr},
-			{DW_AT_high_pc, DW_FORM_addr},
-			{DW_AT_call_file, DW_FORM_data4},
-			{DW_AT_call_line, DW_FORM_udata_pseudo}, // pseudo-form
-		},
-	},
-
-	/* INLINED_SUBROUTINE_RANGES */
-	{
-		DW_TAG_inlined_subroutine,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_abstract_origin, DW_FORM_ref_addr},
-			{DW_AT_ranges, DW_FORM_sec_offset},
-			{DW_AT_call_file, DW_FORM_data4},
-			{DW_AT_call_line, DW_FORM_udata_pseudo}, // pseudo-form
-		},
-	},
-
-	/* VARIABLE */
-	{
-		DW_TAG_variable,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_location, DW_FORM_block1},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_external, DW_FORM_flag},
-		},
-	},
-
-	/* INT CONSTANT */
-	{
-		DW_TAG_constant,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_const_value, DW_FORM_sdata},
-		},
-	},
-
-	/* AUTO */
-	{
-		DW_TAG_variable,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_decl_line, DW_FORM_udata},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_location, DW_FORM_block1},
-		},
-	},
-
-	/* AUTO_LOCLIST */
-	{
-		DW_TAG_variable,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_decl_line, DW_FORM_udata},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_location, DW_FORM_sec_offset},
-		},
-	},
-
-	/* AUTO_ABSTRACT */
-	{
-		DW_TAG_variable,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_decl_line, DW_FORM_udata},
-			{DW_AT_type, DW_FORM_ref_addr},
-		},
-	},
-
-	/* AUTO_CONCRETE */
-	{
-		DW_TAG_variable,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_abstract_origin, DW_FORM_ref_addr},
-			{DW_AT_location, DW_FORM_block1},
-		},
-	},
-
-	/* AUTO_CONCRETE_LOCLIST */
-	{
-		DW_TAG_variable,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_abstract_origin, DW_FORM_ref_addr},
-			{DW_AT_location, DW_FORM_sec_offset},
-		},
-	},
-
-	/* PARAM */
-	{
-		DW_TAG_formal_parameter,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_variable_parameter, DW_FORM_flag},
-			{DW_AT_decl_line, DW_FORM_udata},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_location, DW_FORM_block1},
-		},
-	},
-
-	/* PARAM_LOCLIST */
-	{
-		DW_TAG_formal_parameter,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_variable_parameter, DW_FORM_flag},
-			{DW_AT_decl_line, DW_FORM_udata},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_location, DW_FORM_sec_offset},
-		},
-	},
-
-	/* PARAM_ABSTRACT */
-	{
-		DW_TAG_formal_parameter,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_variable_parameter, DW_FORM_flag},
-			{DW_AT_type, DW_FORM_ref_addr},
-		},
-	},
-
-	/* PARAM_CONCRETE */
-	{
-		DW_TAG_formal_parameter,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_abstract_origin, DW_FORM_ref_addr},
-			{DW_AT_location, DW_FORM_block1},
-		},
-	},
-
-	/* PARAM_CONCRETE_LOCLIST */
-	{
-		DW_TAG_formal_parameter,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_abstract_origin, DW_FORM_ref_addr},
-			{DW_AT_location, DW_FORM_sec_offset},
-		},
-	},
-
-	/* LEXICAL_BLOCK_RANGES */
-	{
-		DW_TAG_lexical_block,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_ranges, DW_FORM_sec_offset},
-		},
-	},
-
-	/* LEXICAL_BLOCK_SIMPLE */
-	{
-		DW_TAG_lexical_block,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_low_pc, DW_FORM_addr},
-			{DW_AT_high_pc, DW_FORM_addr},
-		},
-	},
-
-	/* STRUCTFIELD */
-	{
-		DW_TAG_member,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_data_member_location, DW_FORM_udata},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_go_embedded_field, DW_FORM_flag},
-		},
-	},
-
-	/* FUNCTYPEPARAM */
-	{
-		DW_TAG_formal_parameter,
-		DW_CHILDREN_no,
-
-		// No name!
-		[]dwAttrForm{
-			{DW_AT_type, DW_FORM_ref_addr},
-		},
-	},
-
-	/* DOTDOTDOT */
-	{
-		DW_TAG_unspecified_parameters,
-		DW_CHILDREN_no,
-		[]dwAttrForm{},
-	},
-
-	/* ARRAYRANGE */
-	{
-		DW_TAG_subrange_type,
-		DW_CHILDREN_no,
-
-		// No name!
-		[]dwAttrForm{
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_count, DW_FORM_udata},
-		},
-	},
-
-	// Below here are the types considered public by ispubtype
-	/* NULLTYPE */
-	{
-		DW_TAG_unspecified_type,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-		},
-	},
-
-	/* BASETYPE */
-	{
-		DW_TAG_base_type,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_encoding, DW_FORM_data1},
-			{DW_AT_byte_size, DW_FORM_data1},
-			{DW_AT_go_kind, DW_FORM_data1},
-			{DW_AT_go_runtime_type, DW_FORM_addr},
-		},
-	},
-
-	/* ARRAYTYPE */
-	// child is subrange with upper bound
-	{
-		DW_TAG_array_type,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_byte_size, DW_FORM_udata},
-			{DW_AT_go_kind, DW_FORM_data1},
-			{DW_AT_go_runtime_type, DW_FORM_addr},
-		},
-	},
-
-	/* CHANTYPE */
-	{
-		DW_TAG_typedef,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_go_kind, DW_FORM_data1},
-			{DW_AT_go_runtime_type, DW_FORM_addr},
-			{DW_AT_go_elem, DW_FORM_ref_addr},
-		},
-	},
-
-	/* FUNCTYPE */
-	{
-		DW_TAG_subroutine_type,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_byte_size, DW_FORM_udata},
-			{DW_AT_go_kind, DW_FORM_data1},
-			{DW_AT_go_runtime_type, DW_FORM_addr},
-		},
-	},
-
-	/* IFACETYPE */
-	{
-		DW_TAG_typedef,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_go_kind, DW_FORM_data1},
-			{DW_AT_go_runtime_type, DW_FORM_addr},
-		},
-	},
-
-	/* MAPTYPE */
-	{
-		DW_TAG_typedef,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_go_kind, DW_FORM_data1},
-			{DW_AT_go_runtime_type, DW_FORM_addr},
-			{DW_AT_go_key, DW_FORM_ref_addr},
-			{DW_AT_go_elem, DW_FORM_ref_addr},
-		},
-	},
-
-	/* PTRTYPE */
-	{
-		DW_TAG_pointer_type,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_type, DW_FORM_ref_addr},
-			{DW_AT_go_kind, DW_FORM_data1},
-			{DW_AT_go_runtime_type, DW_FORM_addr},
-		},
-	},
-
-	/* BARE_PTRTYPE */
-	{
-		DW_TAG_pointer_type,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-		},
-	},
-
-	/* SLICETYPE */
-	{
-		DW_TAG_structure_type,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_byte_size, DW_FORM_udata},
-			{DW_AT_go_kind, DW_FORM_data1},
-			{DW_AT_go_runtime_type, DW_FORM_addr},
-			{DW_AT_go_elem, DW_FORM_ref_addr},
-		},
-	},
-
-	/* STRINGTYPE */
-	{
-		DW_TAG_structure_type,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_byte_size, DW_FORM_udata},
-			{DW_AT_go_kind, DW_FORM_data1},
-			{DW_AT_go_runtime_type, DW_FORM_addr},
-		},
-	},
-
-	/* STRUCTTYPE */
-	{
-		DW_TAG_structure_type,
-		DW_CHILDREN_yes,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_byte_size, DW_FORM_udata},
-			{DW_AT_go_kind, DW_FORM_data1},
-			{DW_AT_go_runtime_type, DW_FORM_addr},
-		},
-	},
-
-	/* TYPEDECL */
-	{
-		DW_TAG_typedef,
-		DW_CHILDREN_no,
-		[]dwAttrForm{
-			{DW_AT_name, DW_FORM_string},
-			{DW_AT_type, DW_FORM_ref_addr},
-		},
-	},
-}
-
-// GetAbbrev returns the contents of the .debug_abbrev section.
-func GetAbbrev() []byte {
-	abbrevs := Abbrevs()
-	var buf []byte
-	for i := 1; i < DW_NABRV; i++ {
-		// See section 7.5.3
-		buf = AppendUleb128(buf, uint64(i))
-		buf = AppendUleb128(buf, uint64(abbrevs[i].tag))
-		buf = append(buf, abbrevs[i].children)
-		for _, f := range abbrevs[i].attr {
-			buf = AppendUleb128(buf, uint64(f.attr))
-			buf = AppendUleb128(buf, uint64(f.form))
-		}
-		buf = append(buf, 0, 0)
-	}
-	return append(buf, 0)
-}
-
-/*
- * Debugging Information Entries and their attributes.
- */
-
-// DWAttr represents an attribute of a DWDie.
-//
-// For DW_CLS_string and _block, value should contain the length, and
-// data the data, for _reference, value is 0 and data is a DWDie* to
-// the referenced instance, for all others, value is the whole thing
-// and data is null.
-type DWAttr struct {
-	Link  *DWAttr
-	Atr   uint16 // DW_AT_
-	Cls   uint8  // DW_CLS_
-	Value int64
-	Data  interface{}
-}
-
-// DWDie represents a DWARF debug info entry.
-type DWDie struct {
-	Abbrev int
-	Link   *DWDie
-	Child  *DWDie
-	Attr   *DWAttr
-	Sym    Sym
-}
-
-func putattr(ctxt Context, s Sym, abbrev int, form int, cls int, value int64, data interface{}) error {
-	switch form {
-	case DW_FORM_addr: // address
-		// Allow nil addresses for DW_AT_go_runtime_type.
-		if data == nil && value == 0 {
-			ctxt.AddInt(s, ctxt.PtrSize(), 0)
-			break
-		}
-		if cls == DW_CLS_GO_TYPEREF {
-			ctxt.AddSectionOffset(s, ctxt.PtrSize(), data, value)
-			break
-		}
-		ctxt.AddAddress(s, data, value)
-
-	case DW_FORM_block1: // block
-		if cls == DW_CLS_ADDRESS {
-			ctxt.AddInt(s, 1, int64(1+ctxt.PtrSize()))
-			ctxt.AddInt(s, 1, DW_OP_addr)
-			ctxt.AddAddress(s, data, 0)
-			break
-		}
-
-		value &= 0xff
-		ctxt.AddInt(s, 1, value)
-		p := data.([]byte)[:value]
-		ctxt.AddBytes(s, p)
-
-	case DW_FORM_block2: // block
-		value &= 0xffff
-
-		ctxt.AddInt(s, 2, value)
-		p := data.([]byte)[:value]
-		ctxt.AddBytes(s, p)
-
-	case DW_FORM_block4: // block
-		value &= 0xffffffff
-
-		ctxt.AddInt(s, 4, value)
-		p := data.([]byte)[:value]
-		ctxt.AddBytes(s, p)
-
-	case DW_FORM_block: // block
-		Uleb128put(ctxt, s, value)
-
-		p := data.([]byte)[:value]
-		ctxt.AddBytes(s, p)
-
-	case DW_FORM_data1: // constant
-		ctxt.AddInt(s, 1, value)
-
-	case DW_FORM_data2: // constant
-		ctxt.AddInt(s, 2, value)
-
-	case DW_FORM_data4: // constant, {line,loclist,mac,rangelist}ptr
-		if cls == DW_CLS_PTR { // DW_AT_stmt_list and DW_AT_ranges
-			ctxt.AddDWARFAddrSectionOffset(s, data, value)
-			break
-		}
-		ctxt.AddInt(s, 4, value)
-
-	case DW_FORM_data8: // constant, {line,loclist,mac,rangelist}ptr
-		ctxt.AddInt(s, 8, value)
-
-	case DW_FORM_sdata: // constant
-		Sleb128put(ctxt, s, value)
-
-	case DW_FORM_udata: // constant
-		Uleb128put(ctxt, s, value)
-
-	case DW_FORM_string: // string
-		str := data.(string)
-		ctxt.AddString(s, str)
-		// TODO(ribrdb): verify padded strings are never used and remove this
-		for i := int64(len(str)); i < value; i++ {
-			ctxt.AddInt(s, 1, 0)
-		}
-
-	case DW_FORM_flag: // flag
-		if value != 0 {
-			ctxt.AddInt(s, 1, 1)
-		} else {
-			ctxt.AddInt(s, 1, 0)
-		}
-
-	// As of DWARF 3 the ref_addr is always 32 bits, unless emitting a large
-	// (> 4 GB of debug info aka "64-bit") unit, which we don't implement.
-	case DW_FORM_ref_addr: // reference to a DIE in the .info section
-		fallthrough
-	case DW_FORM_sec_offset: // offset into a DWARF section other than .info
-		if data == nil {
-			return fmt.Errorf("dwarf: null reference in %d", abbrev)
-		}
-		ctxt.AddDWARFAddrSectionOffset(s, data, value)
-
-	case DW_FORM_ref1, // reference within the compilation unit
-		DW_FORM_ref2,      // reference
-		DW_FORM_ref4,      // reference
-		DW_FORM_ref8,      // reference
-		DW_FORM_ref_udata, // reference
-
-		DW_FORM_strp,     // string
-		DW_FORM_indirect: // (see Section 7.5.3)
-		fallthrough
-	default:
-		return fmt.Errorf("dwarf: unsupported attribute form %d / class %d", form, cls)
-	}
-	return nil
-}
-
-// PutAttrs writes the attributes for a DIE to symbol 's'.
-//
-// Note that we can (and do) add arbitrary attributes to a DIE, but
-// only the ones actually listed in the Abbrev will be written out.
-func PutAttrs(ctxt Context, s Sym, abbrev int, attr *DWAttr) {
-	abbrevs := Abbrevs()
-Outer:
-	for _, f := range abbrevs[abbrev].attr {
-		for ap := attr; ap != nil; ap = ap.Link {
-			if ap.Atr == f.attr {
-				putattr(ctxt, s, abbrev, int(f.form), int(ap.Cls), ap.Value, ap.Data)
-				continue Outer
-			}
-		}
-
-		putattr(ctxt, s, abbrev, int(f.form), 0, 0, nil)
-	}
-}
-
-// HasChildren reports whether 'die' uses an abbrev that supports children.
-func HasChildren(die *DWDie) bool {
-	abbrevs := Abbrevs()
-	return abbrevs[die.Abbrev].children != 0
-}
-
-// PutIntConst writes a DIE for an integer constant
-func PutIntConst(ctxt Context, info, typ Sym, name string, val int64) {
-	Uleb128put(ctxt, info, DW_ABRV_INT_CONSTANT)
-	putattr(ctxt, info, DW_ABRV_INT_CONSTANT, DW_FORM_string, DW_CLS_STRING, int64(len(name)), name)
-	putattr(ctxt, info, DW_ABRV_INT_CONSTANT, DW_FORM_ref_addr, DW_CLS_REFERENCE, 0, typ)
-	putattr(ctxt, info, DW_ABRV_INT_CONSTANT, DW_FORM_sdata, DW_CLS_CONSTANT, val, nil)
-}
-
-// PutBasedRanges writes a range table to sym. All addresses in ranges are
-// relative to some base address, which must be arranged by the caller
-// (e.g., with a DW_AT_low_pc attribute, or in a BASE-prefixed range).
-func PutBasedRanges(ctxt Context, sym Sym, ranges []Range) {
-	ps := ctxt.PtrSize()
-	// Write ranges.
-	for _, r := range ranges {
-		ctxt.AddInt(sym, ps, r.Start)
-		ctxt.AddInt(sym, ps, r.End)
-	}
-	// Write trailer.
-	ctxt.AddInt(sym, ps, 0)
-	ctxt.AddInt(sym, ps, 0)
-}
-
-// PutRanges writes a range table to s.Ranges.
-// All addresses in ranges are relative to s.base.
-func (s *FnState) PutRanges(ctxt Context, ranges []Range) {
-	ps := ctxt.PtrSize()
-	sym, base := s.Ranges, s.StartPC
-
-	if s.UseBASEntries {
-		// Using a Base Address Selection Entry reduces the number of relocations, but
-		// this is not done on macOS because it is not supported by dsymutil/dwarfdump/lldb
-		ctxt.AddInt(sym, ps, -1)
-		ctxt.AddAddress(sym, base, 0)
-		PutBasedRanges(ctxt, sym, ranges)
-		return
-	}
-
-	// Write ranges full of relocations
-	for _, r := range ranges {
-		ctxt.AddCURelativeAddress(sym, base, r.Start)
-		ctxt.AddCURelativeAddress(sym, base, r.End)
-	}
-	// Write trailer.
-	ctxt.AddInt(sym, ps, 0)
-	ctxt.AddInt(sym, ps, 0)
-}
-
-// Return TRUE if the inlined call in the specified slot is empty,
-// meaning it has a zero-length range (no instructions), and all
-// of its children are empty.
-func isEmptyInlinedCall(slot int, calls *InlCalls) bool {
-	ic := &calls.Calls[slot]
-	if ic.InlIndex == -2 {
-		return true
-	}
-	live := false
-	for _, k := range ic.Children {
-		if !isEmptyInlinedCall(k, calls) {
-			live = true
-		}
-	}
-	if len(ic.Ranges) > 0 {
-		live = true
-	}
-	if !live {
-		ic.InlIndex = -2
-	}
-	return !live
-}
-
-// Slot -1:    return top-level inlines
-// Slot >= 0:  return children of that slot
-func inlChildren(slot int, calls *InlCalls) []int {
-	var kids []int
-	if slot != -1 {
-		for _, k := range calls.Calls[slot].Children {
-			if !isEmptyInlinedCall(k, calls) {
-				kids = append(kids, k)
-			}
-		}
-	} else {
-		for k := 0; k < len(calls.Calls); k += 1 {
-			if calls.Calls[k].Root && !isEmptyInlinedCall(k, calls) {
-				kids = append(kids, k)
-			}
-		}
-	}
-	return kids
-}
-
-func inlinedVarTable(inlcalls *InlCalls) map[*Var]bool {
-	vars := make(map[*Var]bool)
-	for _, ic := range inlcalls.Calls {
-		for _, v := range ic.InlVars {
-			vars[v] = true
-		}
-	}
-	return vars
-}
-
-// The s.Scopes slice contains variables were originally part of the
-// function being emitted, as well as variables that were imported
-// from various callee functions during the inlining process. This
-// function prunes out any variables from the latter category (since
-// they will be emitted as part of DWARF inlined_subroutine DIEs) and
-// then generates scopes for vars in the former category.
-func putPrunedScopes(ctxt Context, s *FnState, fnabbrev int) error {
-	if len(s.Scopes) == 0 {
-		return nil
-	}
-	scopes := make([]Scope, len(s.Scopes), len(s.Scopes))
-	pvars := inlinedVarTable(&s.InlCalls)
-	for k, s := range s.Scopes {
-		var pruned Scope = Scope{Parent: s.Parent, Ranges: s.Ranges}
-		for i := 0; i < len(s.Vars); i++ {
-			_, found := pvars[s.Vars[i]]
-			if !found {
-				pruned.Vars = append(pruned.Vars, s.Vars[i])
-			}
-		}
-		sort.Sort(byChildIndex(pruned.Vars))
-		scopes[k] = pruned
-	}
-	var encbuf [20]byte
-	if putscope(ctxt, s, scopes, 0, fnabbrev, encbuf[:0]) < int32(len(scopes)) {
-		return errors.New("multiple toplevel scopes")
-	}
-	return nil
-}
-
-// Emit DWARF attributes and child DIEs for an 'abstract' subprogram.
-// The abstract subprogram DIE for a function contains its
-// location-independent attributes (name, type, etc). Other instances
-// of the function (any inlined copy of it, or the single out-of-line
-// 'concrete' instance) will contain a pointer back to this abstract
-// DIE (as a space-saving measure, so that name/type etc doesn't have
-// to be repeated for each inlined copy).
-func PutAbstractFunc(ctxt Context, s *FnState) error {
-
-	if logDwarf {
-		ctxt.Logf("PutAbstractFunc(%v)\n", s.Absfn)
-	}
-
-	abbrev := DW_ABRV_FUNCTION_ABSTRACT
-	Uleb128put(ctxt, s.Absfn, int64(abbrev))
-
-	fullname := s.Name
-	if strings.HasPrefix(s.Name, "\"\".") {
-		// Generate a fully qualified name for the function in the
-		// abstract case. This is so as to avoid the need for the
-		// linker to process the DIE with patchDWARFName(); we can't
-		// allow the name attribute of an abstract subprogram DIE to
-		// be rewritten, since it would change the offsets of the
-		// child DIEs (which we're relying on in order for abstract
-		// origin references to work).
-		fullname = objabi.PathToPrefix(s.Importpath) + "." + s.Name[3:]
-	}
-	putattr(ctxt, s.Absfn, abbrev, DW_FORM_string, DW_CLS_STRING, int64(len(fullname)), fullname)
-
-	// DW_AT_inlined value
-	putattr(ctxt, s.Absfn, abbrev, DW_FORM_data1, DW_CLS_CONSTANT, int64(DW_INL_inlined), nil)
-
-	var ev int64
-	if s.External {
-		ev = 1
-	}
-	putattr(ctxt, s.Absfn, abbrev, DW_FORM_flag, DW_CLS_FLAG, ev, 0)
-
-	// Child variables (may be empty)
-	var flattened []*Var
-
-	// This slice will hold the offset in bytes for each child var DIE
-	// with respect to the start of the parent subprogram DIE.
-	var offsets []int32
-
-	// Scopes/vars
-	if len(s.Scopes) > 0 {
-		// For abstract subprogram DIEs we want to flatten out scope info:
-		// lexical scope DIEs contain range and/or hi/lo PC attributes,
-		// which we explicitly don't want for the abstract subprogram DIE.
-		pvars := inlinedVarTable(&s.InlCalls)
-		for _, scope := range s.Scopes {
-			for i := 0; i < len(scope.Vars); i++ {
-				_, found := pvars[scope.Vars[i]]
-				if found || !scope.Vars[i].IsInAbstract {
-					continue
-				}
-				flattened = append(flattened, scope.Vars[i])
-			}
-		}
-		if len(flattened) > 0 {
-			sort.Sort(byChildIndex(flattened))
-
-			if logDwarf {
-				ctxt.Logf("putAbstractScope(%v): vars:", s.Info)
-				for i, v := range flattened {
-					ctxt.Logf(" %d:%s", i, v.Name)
-				}
-				ctxt.Logf("\n")
-			}
-
-			// This slice will hold the offset in bytes for each child
-			// variable DIE with respect to the start of the parent
-			// subprogram DIE.
-			for _, v := range flattened {
-				offsets = append(offsets, int32(ctxt.CurrentOffset(s.Absfn)))
-				putAbstractVar(ctxt, s.Absfn, v)
-			}
-		}
-	}
-	ctxt.RecordChildDieOffsets(s.Absfn, flattened, offsets)
-
-	Uleb128put(ctxt, s.Absfn, 0)
-	return nil
-}
-
-// Emit DWARF attributes and child DIEs for an inlined subroutine. The
-// first attribute of an inlined subroutine DIE is a reference back to
-// its corresponding 'abstract' DIE (containing location-independent
-// attributes such as name, type, etc). Inlined subroutine DIEs can
-// have other inlined subroutine DIEs as children.
-func PutInlinedFunc(ctxt Context, s *FnState, callersym Sym, callIdx int) error {
-	ic := s.InlCalls.Calls[callIdx]
-	callee := ic.AbsFunSym
-
-	abbrev := DW_ABRV_INLINED_SUBROUTINE_RANGES
-	if len(ic.Ranges) == 1 {
-		abbrev = DW_ABRV_INLINED_SUBROUTINE
-	}
-	Uleb128put(ctxt, s.Info, int64(abbrev))
-
-	if logDwarf {
-		ctxt.Logf("PutInlinedFunc(caller=%v,callee=%v,abbrev=%d)\n", callersym, callee, abbrev)
-	}
-
-	// Abstract origin.
-	putattr(ctxt, s.Info, abbrev, DW_FORM_ref_addr, DW_CLS_REFERENCE, 0, callee)
-
-	if abbrev == DW_ABRV_INLINED_SUBROUTINE_RANGES {
-		putattr(ctxt, s.Info, abbrev, DW_FORM_sec_offset, DW_CLS_PTR, s.Ranges.Length(ctxt), s.Ranges)
-		s.PutRanges(ctxt, ic.Ranges)
-	} else {
-		st := ic.Ranges[0].Start
-		en := ic.Ranges[0].End
-		putattr(ctxt, s.Info, abbrev, DW_FORM_addr, DW_CLS_ADDRESS, st, s.StartPC)
-		putattr(ctxt, s.Info, abbrev, DW_FORM_addr, DW_CLS_ADDRESS, en, s.StartPC)
-	}
-
-	// Emit call file, line attrs.
-	ctxt.AddFileRef(s.Info, ic.CallFile)
-	form := int(expandPseudoForm(DW_FORM_udata_pseudo))
-	putattr(ctxt, s.Info, abbrev, form, DW_CLS_CONSTANT, int64(ic.CallLine), nil)
-
-	// Variables associated with this inlined routine instance.
-	vars := ic.InlVars
-	sort.Sort(byChildIndex(vars))
-	inlIndex := ic.InlIndex
-	var encbuf [20]byte
-	for _, v := range vars {
-		if !v.IsInAbstract {
-			continue
-		}
-		putvar(ctxt, s, v, callee, abbrev, inlIndex, encbuf[:0])
-	}
-
-	// Children of this inline.
-	for _, sib := range inlChildren(callIdx, &s.InlCalls) {
-		absfn := s.InlCalls.Calls[sib].AbsFunSym
-		err := PutInlinedFunc(ctxt, s, absfn, sib)
-		if err != nil {
-			return err
-		}
-	}
-
-	Uleb128put(ctxt, s.Info, 0)
-	return nil
-}
-
-// Emit DWARF attributes and child DIEs for a 'concrete' subprogram,
-// meaning the out-of-line copy of a function that was inlined at some
-// point during the compilation of its containing package. The first
-// attribute for a concrete DIE is a reference to the 'abstract' DIE
-// for the function (which holds location-independent attributes such
-// as name, type), then the remainder of the attributes are specific
-// to this instance (location, frame base, etc).
-func PutConcreteFunc(ctxt Context, s *FnState) error {
-	if logDwarf {
-		ctxt.Logf("PutConcreteFunc(%v)\n", s.Info)
-	}
-	abbrev := DW_ABRV_FUNCTION_CONCRETE
-	Uleb128put(ctxt, s.Info, int64(abbrev))
-
-	// Abstract origin.
-	putattr(ctxt, s.Info, abbrev, DW_FORM_ref_addr, DW_CLS_REFERENCE, 0, s.Absfn)
-
-	// Start/end PC.
-	putattr(ctxt, s.Info, abbrev, DW_FORM_addr, DW_CLS_ADDRESS, 0, s.StartPC)
-	putattr(ctxt, s.Info, abbrev, DW_FORM_addr, DW_CLS_ADDRESS, s.Size, s.StartPC)
-
-	// cfa / frame base
-	putattr(ctxt, s.Info, abbrev, DW_FORM_block1, DW_CLS_BLOCK, 1, []byte{DW_OP_call_frame_cfa})
-
-	// Scopes
-	if err := putPrunedScopes(ctxt, s, abbrev); err != nil {
-		return err
-	}
-
-	// Inlined subroutines.
-	for _, sib := range inlChildren(-1, &s.InlCalls) {
-		absfn := s.InlCalls.Calls[sib].AbsFunSym
-		err := PutInlinedFunc(ctxt, s, absfn, sib)
-		if err != nil {
-			return err
-		}
-	}
-
-	Uleb128put(ctxt, s.Info, 0)
-	return nil
-}
-
-// Emit DWARF attributes and child DIEs for a subprogram. Here
-// 'default' implies that the function in question was not inlined
-// when its containing package was compiled (hence there is no need to
-// emit an abstract version for it to use as a base for inlined
-// routine records).
-func PutDefaultFunc(ctxt Context, s *FnState) error {
-	if logDwarf {
-		ctxt.Logf("PutDefaultFunc(%v)\n", s.Info)
-	}
-	abbrev := DW_ABRV_FUNCTION
-	Uleb128put(ctxt, s.Info, int64(abbrev))
-
-	// Expand '"".' to import path.
-	name := s.Name
-	if s.Importpath != "" {
-		name = strings.Replace(name, "\"\".", objabi.PathToPrefix(s.Importpath)+".", -1)
-	}
-
-	putattr(ctxt, s.Info, DW_ABRV_FUNCTION, DW_FORM_string, DW_CLS_STRING, int64(len(name)), name)
-	putattr(ctxt, s.Info, abbrev, DW_FORM_addr, DW_CLS_ADDRESS, 0, s.StartPC)
-	putattr(ctxt, s.Info, abbrev, DW_FORM_addr, DW_CLS_ADDRESS, s.Size, s.StartPC)
-	putattr(ctxt, s.Info, abbrev, DW_FORM_block1, DW_CLS_BLOCK, 1, []byte{DW_OP_call_frame_cfa})
-	ctxt.AddFileRef(s.Info, s.Filesym)
-
-	var ev int64
-	if s.External {
-		ev = 1
-	}
-	putattr(ctxt, s.Info, abbrev, DW_FORM_flag, DW_CLS_FLAG, ev, 0)
-
-	// Scopes
-	if err := putPrunedScopes(ctxt, s, abbrev); err != nil {
-		return err
-	}
-
-	// Inlined subroutines.
-	for _, sib := range inlChildren(-1, &s.InlCalls) {
-		absfn := s.InlCalls.Calls[sib].AbsFunSym
-		err := PutInlinedFunc(ctxt, s, absfn, sib)
-		if err != nil {
-			return err
-		}
-	}
-
-	Uleb128put(ctxt, s.Info, 0)
-	return nil
-}
-
-func putscope(ctxt Context, s *FnState, scopes []Scope, curscope int32, fnabbrev int, encbuf []byte) int32 {
-
-	if logDwarf {
-		ctxt.Logf("putscope(%v,%d): vars:", s.Info, curscope)
-		for i, v := range scopes[curscope].Vars {
-			ctxt.Logf(" %d:%d:%s", i, v.ChildIndex, v.Name)
-		}
-		ctxt.Logf("\n")
-	}
-
-	for _, v := range scopes[curscope].Vars {
-		putvar(ctxt, s, v, s.Absfn, fnabbrev, -1, encbuf)
-	}
-	this := curscope
-	curscope++
-	for curscope < int32(len(scopes)) {
-		scope := scopes[curscope]
-		if scope.Parent != this {
-			return curscope
-		}
-
-		if len(scopes[curscope].Vars) == 0 {
-			curscope = putscope(ctxt, s, scopes, curscope, fnabbrev, encbuf)
-			continue
-		}
-
-		if len(scope.Ranges) == 1 {
-			Uleb128put(ctxt, s.Info, DW_ABRV_LEXICAL_BLOCK_SIMPLE)
-			putattr(ctxt, s.Info, DW_ABRV_LEXICAL_BLOCK_SIMPLE, DW_FORM_addr, DW_CLS_ADDRESS, scope.Ranges[0].Start, s.StartPC)
-			putattr(ctxt, s.Info, DW_ABRV_LEXICAL_BLOCK_SIMPLE, DW_FORM_addr, DW_CLS_ADDRESS, scope.Ranges[0].End, s.StartPC)
-		} else {
-			Uleb128put(ctxt, s.Info, DW_ABRV_LEXICAL_BLOCK_RANGES)
-			putattr(ctxt, s.Info, DW_ABRV_LEXICAL_BLOCK_RANGES, DW_FORM_sec_offset, DW_CLS_PTR, s.Ranges.Length(ctxt), s.Ranges)
-
-			s.PutRanges(ctxt, scope.Ranges)
-		}
-
-		curscope = putscope(ctxt, s, scopes, curscope, fnabbrev, encbuf)
-
-		Uleb128put(ctxt, s.Info, 0)
-	}
-	return curscope
-}
-
-// Given a default var abbrev code, select corresponding concrete code.
-func concreteVarAbbrev(varAbbrev int) int {
-	switch varAbbrev {
-	case DW_ABRV_AUTO:
-		return DW_ABRV_AUTO_CONCRETE
-	case DW_ABRV_PARAM:
-		return DW_ABRV_PARAM_CONCRETE
-	case DW_ABRV_AUTO_LOCLIST:
-		return DW_ABRV_AUTO_CONCRETE_LOCLIST
-	case DW_ABRV_PARAM_LOCLIST:
-		return DW_ABRV_PARAM_CONCRETE_LOCLIST
-	default:
-		panic("should never happen")
-	}
-}
-
-// Pick the correct abbrev code for variable or parameter DIE.
-func determineVarAbbrev(v *Var, fnabbrev int) (int, bool, bool) {
-	abbrev := v.Abbrev
-
-	// If the variable was entirely optimized out, don't emit a location list;
-	// convert to an inline abbreviation and emit an empty location.
-	missing := false
-	switch {
-	case abbrev == DW_ABRV_AUTO_LOCLIST && v.PutLocationList == nil:
-		missing = true
-		abbrev = DW_ABRV_AUTO
-	case abbrev == DW_ABRV_PARAM_LOCLIST && v.PutLocationList == nil:
-		missing = true
-		abbrev = DW_ABRV_PARAM
-	}
-
-	// Determine whether to use a concrete variable or regular variable DIE.
-	concrete := true
-	switch fnabbrev {
-	case DW_ABRV_FUNCTION:
-		concrete = false
-		break
-	case DW_ABRV_FUNCTION_CONCRETE:
-		// If we're emitting a concrete subprogram DIE and the variable
-		// in question is not part of the corresponding abstract function DIE,
-		// then use the default (non-concrete) abbrev for this param.
-		if !v.IsInAbstract {
-			concrete = false
-		}
-	case DW_ABRV_INLINED_SUBROUTINE, DW_ABRV_INLINED_SUBROUTINE_RANGES:
-	default:
-		panic("should never happen")
-	}
-
-	// Select proper abbrev based on concrete/non-concrete
-	if concrete {
-		abbrev = concreteVarAbbrev(abbrev)
-	}
-
-	return abbrev, missing, concrete
-}
-
-func abbrevUsesLoclist(abbrev int) bool {
-	switch abbrev {
-	case DW_ABRV_AUTO_LOCLIST, DW_ABRV_AUTO_CONCRETE_LOCLIST,
-		DW_ABRV_PARAM_LOCLIST, DW_ABRV_PARAM_CONCRETE_LOCLIST:
-		return true
-	default:
-		return false
-	}
-}
-
-// Emit DWARF attributes for a variable belonging to an 'abstract' subprogram.
-func putAbstractVar(ctxt Context, info Sym, v *Var) {
-	// Remap abbrev
-	abbrev := v.Abbrev
-	switch abbrev {
-	case DW_ABRV_AUTO, DW_ABRV_AUTO_LOCLIST:
-		abbrev = DW_ABRV_AUTO_ABSTRACT
-	case DW_ABRV_PARAM, DW_ABRV_PARAM_LOCLIST:
-		abbrev = DW_ABRV_PARAM_ABSTRACT
-	}
-
-	Uleb128put(ctxt, info, int64(abbrev))
-	putattr(ctxt, info, abbrev, DW_FORM_string, DW_CLS_STRING, int64(len(v.Name)), v.Name)
-
-	// Isreturn attribute if this is a param
-	if abbrev == DW_ABRV_PARAM_ABSTRACT {
-		var isReturn int64
-		if v.IsReturnValue {
-			isReturn = 1
-		}
-		putattr(ctxt, info, abbrev, DW_FORM_flag, DW_CLS_FLAG, isReturn, nil)
-	}
-
-	// Line
-	if abbrev != DW_ABRV_PARAM_ABSTRACT {
-		// See issue 23374 for more on why decl line is skipped for abs params.
-		putattr(ctxt, info, abbrev, DW_FORM_udata, DW_CLS_CONSTANT, int64(v.DeclLine), nil)
-	}
-
-	// Type
-	putattr(ctxt, info, abbrev, DW_FORM_ref_addr, DW_CLS_REFERENCE, 0, v.Type)
-
-	// Var has no children => no terminator
-}
-
-func putvar(ctxt Context, s *FnState, v *Var, absfn Sym, fnabbrev, inlIndex int, encbuf []byte) {
-	// Remap abbrev according to parent DIE abbrev
-	abbrev, missing, concrete := determineVarAbbrev(v, fnabbrev)
-
-	Uleb128put(ctxt, s.Info, int64(abbrev))
-
-	// Abstract origin for concrete / inlined case
-	if concrete {
-		// Here we are making a reference to a child DIE of an abstract
-		// function subprogram DIE. The child DIE has no LSym, so instead
-		// after the call to 'putattr' below we make a call to register
-		// the child DIE reference.
-		putattr(ctxt, s.Info, abbrev, DW_FORM_ref_addr, DW_CLS_REFERENCE, 0, absfn)
-		ctxt.RecordDclReference(s.Info, absfn, int(v.ChildIndex), inlIndex)
-	} else {
-		// Var name, line for abstract and default cases
-		n := v.Name
-		putattr(ctxt, s.Info, abbrev, DW_FORM_string, DW_CLS_STRING, int64(len(n)), n)
-		if abbrev == DW_ABRV_PARAM || abbrev == DW_ABRV_PARAM_LOCLIST || abbrev == DW_ABRV_PARAM_ABSTRACT {
-			var isReturn int64
-			if v.IsReturnValue {
-				isReturn = 1
-			}
-			putattr(ctxt, s.Info, abbrev, DW_FORM_flag, DW_CLS_FLAG, isReturn, nil)
-		}
-		putattr(ctxt, s.Info, abbrev, DW_FORM_udata, DW_CLS_CONSTANT, int64(v.DeclLine), nil)
-		putattr(ctxt, s.Info, abbrev, DW_FORM_ref_addr, DW_CLS_REFERENCE, 0, v.Type)
-	}
-
-	if abbrevUsesLoclist(abbrev) {
-		putattr(ctxt, s.Info, abbrev, DW_FORM_sec_offset, DW_CLS_PTR, s.Loc.Length(ctxt), s.Loc)
-		v.PutLocationList(s.Loc, s.StartPC)
-	} else {
-		loc := encbuf[:0]
-		switch {
-		case missing:
-			break // no location
-		case v.StackOffset == 0:
-			loc = append(loc, DW_OP_call_frame_cfa)
-		default:
-			loc = append(loc, DW_OP_fbreg)
-			loc = AppendSleb128(loc, int64(v.StackOffset))
-		}
-		putattr(ctxt, s.Info, abbrev, DW_FORM_block1, DW_CLS_BLOCK, int64(len(loc)), loc)
-	}
-
-	// Var has no children => no terminator
-}
-
-// VarsByOffset attaches the methods of sort.Interface to []*Var,
-// sorting in increasing StackOffset.
-type VarsByOffset []*Var
-
-func (s VarsByOffset) Len() int           { return len(s) }
-func (s VarsByOffset) Less(i, j int) bool { return s[i].StackOffset < s[j].StackOffset }
-func (s VarsByOffset) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
-
-// byChildIndex implements sort.Interface for []*dwarf.Var by child index.
-type byChildIndex []*Var
-
-func (s byChildIndex) Len() int           { return len(s) }
-func (s byChildIndex) Less(i, j int) bool { return s[i].ChildIndex < s[j].ChildIndex }
-func (s byChildIndex) Swap(i, j int)      { s[i], s[j] = s[j], s[i] }
-
-// IsDWARFEnabledOnAIX returns true if DWARF is possible on the
-// current extld.
-// AIX ld doesn't support DWARF with -bnoobjreorder with version
-// prior to 7.2.2.
-func IsDWARFEnabledOnAIXLd(extld string) (bool, error) {
-	out, err := exec.Command(extld, "-Wl,-V").CombinedOutput()
-	if err != nil {
-		// The normal output should display ld version and
-		// then fails because ".main" is not defined:
-		// ld: 0711-317 ERROR: Undefined symbol: .main
-		if !bytes.Contains(out, []byte("0711-317")) {
-			return false, fmt.Errorf("%s -Wl,-V failed: %v\n%s", extld, err, out)
-		}
-	}
-	// gcc -Wl,-V output should be:
-	//   /usr/bin/ld: LD X.X.X(date)
-	//   ...
-	out = bytes.TrimPrefix(out, []byte("/usr/bin/ld: LD "))
-	vers := string(bytes.Split(out, []byte("("))[0])
-	subvers := strings.Split(vers, ".")
-	if len(subvers) != 3 {
-		return false, fmt.Errorf("cannot parse %s -Wl,-V (%s): %v\n", extld, out, err)
-	}
-	if v, err := strconv.Atoi(subvers[0]); err != nil || v < 7 {
-		return false, nil
-	} else if v > 7 {
-		return true, nil
-	}
-	if v, err := strconv.Atoi(subvers[1]); err != nil || v < 2 {
-		return false, nil
-	} else if v > 2 {
-		return true, nil
-	}
-	if v, err := strconv.Atoi(subvers[2]); err != nil || v < 2 {
-		return false, nil
-	}
-	return true, nil
-}