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-rw-r--r--vendor/github.com/google/gops/internal/dwarf/dwarf.go600
-rw-r--r--vendor/github.com/google/gops/internal/dwarf/dwarf_defs.go483
2 files changed, 1083 insertions, 0 deletions
diff --git a/vendor/github.com/google/gops/internal/dwarf/dwarf.go b/vendor/github.com/google/gops/internal/dwarf/dwarf.go
new file mode 100644
index 00000000..c72ef5b0
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/dwarf/dwarf.go
@@ -0,0 +1,600 @@
+// 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 (
+ "fmt"
+)
+
+// InfoPrefix is the prefix for all the symbols containing DWARF info entries.
+const InfoPrefix = "go.info."
+
+// Sym represents a symbol.
+type Sym interface {
+}
+
+// A Var represents a local variable or a function parameter.
+type Var struct {
+ Name string
+ Abbrev int // Either DW_ABRV_AUTO or DW_ABRV_PARAM
+ Offset int32
+ Type Sym
+ Link *Var
+}
+
+// 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)
+ AddSectionOffset(s Sym, size int, t interface{}, ofs int64)
+ AddString(s Sym, v string)
+ SymValue(s Sym) int64
+}
+
+// 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
+}
+
+var encbuf [20]byte
+
+// AppendUleb128 appends v to s using DWARF's unsigned LEB128 encoding.
+func Uleb128put(ctxt Context, s Sym, v int64) {
+ b := AppendUleb128(encbuf[:0], uint64(v))
+ ctxt.AddBytes(s, b)
+}
+
+// AppendUleb128 appends v to s using DWARF's signed LEB128 encoding.
+func Sleb128put(ctxt Context, s Sym, v int64) {
+ b := AppendSleb128(encbuf[:0], v)
+ ctxt.AddBytes(s, b)
+}
+
+/*
+ * Defining Abbrevs. This is hardcoded, and there will be
+ * only a handful of them. 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
+
+ DW_AT_internal_location = 253 // params and locals; not emitted
+)
+
+// Index into the abbrevs table below.
+// Keep in sync with ispubname() and ispubtype() below.
+// ispubtype considers >= NULLTYPE public
+const (
+ DW_ABRV_NULL = iota
+ DW_ABRV_COMPUNIT
+ DW_ABRV_FUNCTION
+ DW_ABRV_VARIABLE
+ DW_ABRV_AUTO
+ DW_ABRV_PARAM
+ 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 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_low_pc, DW_FORM_addr},
+ {DW_AT_high_pc, DW_FORM_addr},
+ {DW_AT_stmt_list, DW_FORM_data4},
+ {DW_AT_comp_dir, 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_external, DW_FORM_flag},
+ },
+ },
+
+ /* 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},
+ },
+ },
+
+ /* AUTO */
+ {
+ 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},
+ },
+ },
+
+ /* PARAM */
+ {
+ DW_TAG_formal_parameter,
+ DW_CHILDREN_no,
+ []dwAttrForm{
+ {DW_AT_name, DW_FORM_string},
+ {DW_AT_location, DW_FORM_block1},
+ {DW_AT_type, DW_FORM_ref_addr},
+ },
+ },
+
+ /* STRUCTFIELD */
+ {
+ DW_TAG_member,
+ DW_CHILDREN_no,
+ []dwAttrForm{
+ {DW_AT_name, DW_FORM_string},
+ {DW_AT_data_member_location, DW_FORM_block1},
+ {DW_AT_type, DW_FORM_ref_addr},
+ },
+ },
+
+ /* 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},
+ },
+ },
+
+ /* 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},
+ },
+ },
+
+ /* 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_elem, DW_FORM_ref_addr},
+ },
+ },
+
+ /* FUNCTYPE */
+ {
+ DW_TAG_subroutine_type,
+ DW_CHILDREN_yes,
+ []dwAttrForm{
+ {DW_AT_name, DW_FORM_string},
+ // {DW_AT_type, DW_FORM_ref_addr},
+ {DW_AT_go_kind, DW_FORM_data1},
+ },
+ },
+
+ /* 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},
+ },
+ },
+
+ /* 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_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},
+ },
+ },
+
+ /* 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_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},
+ },
+ },
+
+ /* 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},
+ },
+ },
+
+ /* 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 {
+ 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, byte(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
+ 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
+ ctxt.AddSectionOffset(s, 4, data, 0)
+ 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)
+ }
+
+ // In DWARF 2 (which is what we claim to generate),
+ // the ref_addr is the same size as a normal address.
+ // In DWARF 3 it 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
+ if data == nil {
+ return fmt.Errorf("dwarf: null reference in %d", abbrev)
+ } else {
+ ctxt.AddSectionOffset(s, ctxt.PtrSize(), data, 0)
+ }
+
+ 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) {
+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 returns true if 'die' uses an abbrev that supports children.
+func HasChildren(die *DWDie) bool {
+ return abbrevs[die.Abbrev].children != 0
+}
+
+// PutFunc writes a DIE for a function to s.
+// It also writes child DIEs for each variable in vars.
+func PutFunc(ctxt Context, s Sym, name string, external bool, startPC Sym, size int64, vars *Var) {
+ Uleb128put(ctxt, s, DW_ABRV_FUNCTION)
+ putattr(ctxt, s, DW_ABRV_FUNCTION, DW_FORM_string, DW_CLS_STRING, int64(len(name)), name)
+ putattr(ctxt, s, DW_ABRV_FUNCTION, DW_FORM_addr, DW_CLS_ADDRESS, 0, startPC)
+ putattr(ctxt, s, DW_ABRV_FUNCTION, DW_FORM_addr, DW_CLS_ADDRESS, size+ctxt.SymValue(startPC), startPC)
+ var ev int64
+ if external {
+ ev = 1
+ }
+ putattr(ctxt, s, DW_ABRV_FUNCTION, DW_FORM_flag, DW_CLS_FLAG, ev, 0)
+ names := make(map[string]bool)
+ for v := vars; v != nil; v = v.Link {
+ var n string
+ if names[v.Name] {
+ n = fmt.Sprintf("%s#%d", v.Name, len(names))
+ } else {
+ n = v.Name
+ }
+ names[n] = true
+
+ Uleb128put(ctxt, s, int64(v.Abbrev))
+ putattr(ctxt, s, v.Abbrev, DW_FORM_string, DW_CLS_STRING, int64(len(n)), n)
+ loc := append(encbuf[:0], DW_OP_call_frame_cfa)
+ if v.Offset != 0 {
+ loc = append(loc, DW_OP_consts)
+ loc = AppendSleb128(loc, int64(v.Offset))
+ loc = append(loc, DW_OP_plus)
+ }
+ putattr(ctxt, s, v.Abbrev, DW_FORM_block1, DW_CLS_BLOCK, int64(len(loc)), loc)
+ putattr(ctxt, s, v.Abbrev, DW_FORM_ref_addr, DW_CLS_REFERENCE, 0, v.Type)
+
+ }
+ Uleb128put(ctxt, s, 0)
+}
diff --git a/vendor/github.com/google/gops/internal/dwarf/dwarf_defs.go b/vendor/github.com/google/gops/internal/dwarf/dwarf_defs.go
new file mode 100644
index 00000000..d1870b57
--- /dev/null
+++ b/vendor/github.com/google/gops/internal/dwarf/dwarf_defs.go
@@ -0,0 +1,483 @@
+// Copyright 2010 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
+
+// Cut, pasted, tr-and-awk'ed from tables in
+// http://dwarfstd.org/doc/Dwarf3.pdf
+
+// Table 18
+const (
+ DW_TAG_array_type = 0x01
+ DW_TAG_class_type = 0x02
+ DW_TAG_entry_point = 0x03
+ DW_TAG_enumeration_type = 0x04
+ DW_TAG_formal_parameter = 0x05
+ DW_TAG_imported_declaration = 0x08
+ DW_TAG_label = 0x0a
+ DW_TAG_lexical_block = 0x0b
+ DW_TAG_member = 0x0d
+ DW_TAG_pointer_type = 0x0f
+ DW_TAG_reference_type = 0x10
+ DW_TAG_compile_unit = 0x11
+ DW_TAG_string_type = 0x12
+ DW_TAG_structure_type = 0x13
+ DW_TAG_subroutine_type = 0x15
+ DW_TAG_typedef = 0x16
+ DW_TAG_union_type = 0x17
+ DW_TAG_unspecified_parameters = 0x18
+ DW_TAG_variant = 0x19
+ DW_TAG_common_block = 0x1a
+ DW_TAG_common_inclusion = 0x1b
+ DW_TAG_inheritance = 0x1c
+ DW_TAG_inlined_subroutine = 0x1d
+ DW_TAG_module = 0x1e
+ DW_TAG_ptr_to_member_type = 0x1f
+ DW_TAG_set_type = 0x20
+ DW_TAG_subrange_type = 0x21
+ DW_TAG_with_stmt = 0x22
+ DW_TAG_access_declaration = 0x23
+ DW_TAG_base_type = 0x24
+ DW_TAG_catch_block = 0x25
+ DW_TAG_const_type = 0x26
+ DW_TAG_constant = 0x27
+ DW_TAG_enumerator = 0x28
+ DW_TAG_file_type = 0x29
+ DW_TAG_friend = 0x2a
+ DW_TAG_namelist = 0x2b
+ DW_TAG_namelist_item = 0x2c
+ DW_TAG_packed_type = 0x2d
+ DW_TAG_subprogram = 0x2e
+ DW_TAG_template_type_parameter = 0x2f
+ DW_TAG_template_value_parameter = 0x30
+ DW_TAG_thrown_type = 0x31
+ DW_TAG_try_block = 0x32
+ DW_TAG_variant_part = 0x33
+ DW_TAG_variable = 0x34
+ DW_TAG_volatile_type = 0x35
+ // Dwarf3
+ DW_TAG_dwarf_procedure = 0x36
+ DW_TAG_restrict_type = 0x37
+ DW_TAG_interface_type = 0x38
+ DW_TAG_namespace = 0x39
+ DW_TAG_imported_module = 0x3a
+ DW_TAG_unspecified_type = 0x3b
+ DW_TAG_partial_unit = 0x3c
+ DW_TAG_imported_unit = 0x3d
+ DW_TAG_condition = 0x3f
+ DW_TAG_shared_type = 0x40
+ // Dwarf4
+ DW_TAG_type_unit = 0x41
+ DW_TAG_rvalue_reference_type = 0x42
+ DW_TAG_template_alias = 0x43
+
+ // User defined
+ DW_TAG_lo_user = 0x4080
+ DW_TAG_hi_user = 0xffff
+)
+
+// Table 19
+const (
+ DW_CHILDREN_no = 0x00
+ DW_CHILDREN_yes = 0x01
+)
+
+// Not from the spec, but logically belongs here
+const (
+ DW_CLS_ADDRESS = 0x01 + iota
+ DW_CLS_BLOCK
+ DW_CLS_CONSTANT
+ DW_CLS_FLAG
+ DW_CLS_PTR // lineptr, loclistptr, macptr, rangelistptr
+ DW_CLS_REFERENCE
+ DW_CLS_ADDRLOC
+ DW_CLS_STRING
+)
+
+// Table 20
+const (
+ DW_AT_sibling = 0x01 // reference
+ DW_AT_location = 0x02 // block, loclistptr
+ DW_AT_name = 0x03 // string
+ DW_AT_ordering = 0x09 // constant
+ DW_AT_byte_size = 0x0b // block, constant, reference
+ DW_AT_bit_offset = 0x0c // block, constant, reference
+ DW_AT_bit_size = 0x0d // block, constant, reference
+ DW_AT_stmt_list = 0x10 // lineptr
+ DW_AT_low_pc = 0x11 // address
+ DW_AT_high_pc = 0x12 // address
+ DW_AT_language = 0x13 // constant
+ DW_AT_discr = 0x15 // reference
+ DW_AT_discr_value = 0x16 // constant
+ DW_AT_visibility = 0x17 // constant
+ DW_AT_import = 0x18 // reference
+ DW_AT_string_length = 0x19 // block, loclistptr
+ DW_AT_common_reference = 0x1a // reference
+ DW_AT_comp_dir = 0x1b // string
+ DW_AT_const_value = 0x1c // block, constant, string
+ DW_AT_containing_type = 0x1d // reference
+ DW_AT_default_value = 0x1e // reference
+ DW_AT_inline = 0x20 // constant
+ DW_AT_is_optional = 0x21 // flag
+ DW_AT_lower_bound = 0x22 // block, constant, reference
+ DW_AT_producer = 0x25 // string
+ DW_AT_prototyped = 0x27 // flag
+ DW_AT_return_addr = 0x2a // block, loclistptr
+ DW_AT_start_scope = 0x2c // constant
+ DW_AT_bit_stride = 0x2e // constant
+ DW_AT_upper_bound = 0x2f // block, constant, reference
+ DW_AT_abstract_origin = 0x31 // reference
+ DW_AT_accessibility = 0x32 // constant
+ DW_AT_address_class = 0x33 // constant
+ DW_AT_artificial = 0x34 // flag
+ DW_AT_base_types = 0x35 // reference
+ DW_AT_calling_convention = 0x36 // constant
+ DW_AT_count = 0x37 // block, constant, reference
+ DW_AT_data_member_location = 0x38 // block, constant, loclistptr
+ DW_AT_decl_column = 0x39 // constant
+ DW_AT_decl_file = 0x3a // constant
+ DW_AT_decl_line = 0x3b // constant
+ DW_AT_declaration = 0x3c // flag
+ DW_AT_discr_list = 0x3d // block
+ DW_AT_encoding = 0x3e // constant
+ DW_AT_external = 0x3f // flag
+ DW_AT_frame_base = 0x40 // block, loclistptr
+ DW_AT_friend = 0x41 // reference
+ DW_AT_identifier_case = 0x42 // constant
+ DW_AT_macro_info = 0x43 // macptr
+ DW_AT_namelist_item = 0x44 // block
+ DW_AT_priority = 0x45 // reference
+ DW_AT_segment = 0x46 // block, loclistptr
+ DW_AT_specification = 0x47 // reference
+ DW_AT_static_link = 0x48 // block, loclistptr
+ DW_AT_type = 0x49 // reference
+ DW_AT_use_location = 0x4a // block, loclistptr
+ DW_AT_variable_parameter = 0x4b // flag
+ DW_AT_virtuality = 0x4c // constant
+ DW_AT_vtable_elem_location = 0x4d // block, loclistptr
+ // Dwarf3
+ DW_AT_allocated = 0x4e // block, constant, reference
+ DW_AT_associated = 0x4f // block, constant, reference
+ DW_AT_data_location = 0x50 // block
+ DW_AT_byte_stride = 0x51 // block, constant, reference
+ DW_AT_entry_pc = 0x52 // address
+ DW_AT_use_UTF8 = 0x53 // flag
+ DW_AT_extension = 0x54 // reference
+ DW_AT_ranges = 0x55 // rangelistptr
+ DW_AT_trampoline = 0x56 // address, flag, reference, string
+ DW_AT_call_column = 0x57 // constant
+ DW_AT_call_file = 0x58 // constant
+ DW_AT_call_line = 0x59 // constant
+ DW_AT_description = 0x5a // string
+ DW_AT_binary_scale = 0x5b // constant
+ DW_AT_decimal_scale = 0x5c // constant
+ DW_AT_small = 0x5d // reference
+ DW_AT_decimal_sign = 0x5e // constant
+ DW_AT_digit_count = 0x5f // constant
+ DW_AT_picture_string = 0x60 // string
+ DW_AT_mutable = 0x61 // flag
+ DW_AT_threads_scaled = 0x62 // flag
+ DW_AT_explicit = 0x63 // flag
+ DW_AT_object_pointer = 0x64 // reference
+ DW_AT_endianity = 0x65 // constant
+ DW_AT_elemental = 0x66 // flag
+ DW_AT_pure = 0x67 // flag
+ DW_AT_recursive = 0x68 // flag
+
+ DW_AT_lo_user = 0x2000 // ---
+ DW_AT_hi_user = 0x3fff // ---
+)
+
+// Table 21
+const (
+ DW_FORM_addr = 0x01 // address
+ DW_FORM_block2 = 0x03 // block
+ DW_FORM_block4 = 0x04 // block
+ DW_FORM_data2 = 0x05 // constant
+ DW_FORM_data4 = 0x06 // constant, lineptr, loclistptr, macptr, rangelistptr
+ DW_FORM_data8 = 0x07 // constant, lineptr, loclistptr, macptr, rangelistptr
+ DW_FORM_string = 0x08 // string
+ DW_FORM_block = 0x09 // block
+ DW_FORM_block1 = 0x0a // block
+ DW_FORM_data1 = 0x0b // constant
+ DW_FORM_flag = 0x0c // flag
+ DW_FORM_sdata = 0x0d // constant
+ DW_FORM_strp = 0x0e // string
+ DW_FORM_udata = 0x0f // constant
+ DW_FORM_ref_addr = 0x10 // reference
+ DW_FORM_ref1 = 0x11 // reference
+ DW_FORM_ref2 = 0x12 // reference
+ DW_FORM_ref4 = 0x13 // reference
+ DW_FORM_ref8 = 0x14 // reference
+ DW_FORM_ref_udata = 0x15 // reference
+ DW_FORM_indirect = 0x16 // (see Section 7.5.3)
+)
+
+// Table 24 (#operands, notes)
+const (
+ DW_OP_addr = 0x03 // 1 constant address (size target specific)
+ DW_OP_deref = 0x06 // 0
+ DW_OP_const1u = 0x08 // 1 1-byte constant
+ DW_OP_const1s = 0x09 // 1 1-byte constant
+ DW_OP_const2u = 0x0a // 1 2-byte constant
+ DW_OP_const2s = 0x0b // 1 2-byte constant
+ DW_OP_const4u = 0x0c // 1 4-byte constant
+ DW_OP_const4s = 0x0d // 1 4-byte constant
+ DW_OP_const8u = 0x0e // 1 8-byte constant
+ DW_OP_const8s = 0x0f // 1 8-byte constant
+ DW_OP_constu = 0x10 // 1 ULEB128 constant
+ DW_OP_consts = 0x11 // 1 SLEB128 constant
+ DW_OP_dup = 0x12 // 0
+ DW_OP_drop = 0x13 // 0
+ DW_OP_over = 0x14 // 0
+ DW_OP_pick = 0x15 // 1 1-byte stack index
+ DW_OP_swap = 0x16 // 0
+ DW_OP_rot = 0x17 // 0
+ DW_OP_xderef = 0x18 // 0
+ DW_OP_abs = 0x19 // 0
+ DW_OP_and = 0x1a // 0
+ DW_OP_div = 0x1b // 0
+ DW_OP_minus = 0x1c // 0
+ DW_OP_mod = 0x1d // 0
+ DW_OP_mul = 0x1e // 0
+ DW_OP_neg = 0x1f // 0
+ DW_OP_not = 0x20 // 0
+ DW_OP_or = 0x21 // 0
+ DW_OP_plus = 0x22 // 0
+ DW_OP_plus_uconst = 0x23 // 1 ULEB128 addend
+ DW_OP_shl = 0x24 // 0
+ DW_OP_shr = 0x25 // 0
+ DW_OP_shra = 0x26 // 0
+ DW_OP_xor = 0x27 // 0
+ DW_OP_skip = 0x2f // 1 signed 2-byte constant
+ DW_OP_bra = 0x28 // 1 signed 2-byte constant
+ DW_OP_eq = 0x29 // 0
+ DW_OP_ge = 0x2a // 0
+ DW_OP_gt = 0x2b // 0
+ DW_OP_le = 0x2c // 0
+ DW_OP_lt = 0x2d // 0
+ DW_OP_ne = 0x2e // 0
+ DW_OP_lit0 = 0x30 // 0 ...
+ DW_OP_lit31 = 0x4f // 0 literals 0..31 = (DW_OP_lit0 + literal)
+ DW_OP_reg0 = 0x50 // 0 ..
+ DW_OP_reg31 = 0x6f // 0 reg 0..31 = (DW_OP_reg0 + regnum)
+ DW_OP_breg0 = 0x70 // 1 ...
+ DW_OP_breg31 = 0x8f // 1 SLEB128 offset base register 0..31 = (DW_OP_breg0 + regnum)
+ DW_OP_regx = 0x90 // 1 ULEB128 register
+ DW_OP_fbreg = 0x91 // 1 SLEB128 offset
+ DW_OP_bregx = 0x92 // 2 ULEB128 register followed by SLEB128 offset
+ DW_OP_piece = 0x93 // 1 ULEB128 size of piece addressed
+ DW_OP_deref_size = 0x94 // 1 1-byte size of data retrieved
+ DW_OP_xderef_size = 0x95 // 1 1-byte size of data retrieved
+ DW_OP_nop = 0x96 // 0
+ DW_OP_push_object_address = 0x97 // 0
+ DW_OP_call2 = 0x98 // 1 2-byte offset of DIE
+ DW_OP_call4 = 0x99 // 1 4-byte offset of DIE
+ DW_OP_call_ref = 0x9a // 1 4- or 8-byte offset of DIE
+ DW_OP_form_tls_address = 0x9b // 0
+ DW_OP_call_frame_cfa = 0x9c // 0
+ DW_OP_bit_piece = 0x9d // 2
+ DW_OP_lo_user = 0xe0
+ DW_OP_hi_user = 0xff
+)
+
+// Table 25
+const (
+ DW_ATE_address = 0x01
+ DW_ATE_boolean = 0x02
+ DW_ATE_complex_float = 0x03
+ DW_ATE_float = 0x04
+ DW_ATE_signed = 0x05
+ DW_ATE_signed_char = 0x06
+ DW_ATE_unsigned = 0x07
+ DW_ATE_unsigned_char = 0x08
+ DW_ATE_imaginary_float = 0x09
+ DW_ATE_packed_decimal = 0x0a
+ DW_ATE_numeric_string = 0x0b
+ DW_ATE_edited = 0x0c
+ DW_ATE_signed_fixed = 0x0d
+ DW_ATE_unsigned_fixed = 0x0e
+ DW_ATE_decimal_float = 0x0f
+ DW_ATE_lo_user = 0x80
+ DW_ATE_hi_user = 0xff
+)
+
+// Table 26
+const (
+ DW_DS_unsigned = 0x01
+ DW_DS_leading_overpunch = 0x02
+ DW_DS_trailing_overpunch = 0x03
+ DW_DS_leading_separate = 0x04
+ DW_DS_trailing_separate = 0x05
+)
+
+// Table 27
+const (
+ DW_END_default = 0x00
+ DW_END_big = 0x01
+ DW_END_little = 0x02
+ DW_END_lo_user = 0x40
+ DW_END_hi_user = 0xff
+)
+
+// Table 28
+const (
+ DW_ACCESS_public = 0x01
+ DW_ACCESS_protected = 0x02
+ DW_ACCESS_private = 0x03
+)
+
+// Table 29
+const (
+ DW_VIS_local = 0x01
+ DW_VIS_exported = 0x02
+ DW_VIS_qualified = 0x03
+)
+
+// Table 30
+const (
+ DW_VIRTUALITY_none = 0x00
+ DW_VIRTUALITY_virtual = 0x01
+ DW_VIRTUALITY_pure_virtual = 0x02
+)
+
+// Table 31
+const (
+ DW_LANG_C89 = 0x0001
+ DW_LANG_C = 0x0002
+ DW_LANG_Ada83 = 0x0003
+ DW_LANG_C_plus_plus = 0x0004
+ DW_LANG_Cobol74 = 0x0005
+ DW_LANG_Cobol85 = 0x0006
+ DW_LANG_Fortran77 = 0x0007
+ DW_LANG_Fortran90 = 0x0008
+ DW_LANG_Pascal83 = 0x0009
+ DW_LANG_Modula2 = 0x000a
+ // Dwarf3
+ DW_LANG_Java = 0x000b
+ DW_LANG_C99 = 0x000c
+ DW_LANG_Ada95 = 0x000d
+ DW_LANG_Fortran95 = 0x000e
+ DW_LANG_PLI = 0x000f
+ DW_LANG_ObjC = 0x0010
+ DW_LANG_ObjC_plus_plus = 0x0011
+ DW_LANG_UPC = 0x0012
+ DW_LANG_D = 0x0013
+ // Dwarf4
+ DW_LANG_Python = 0x0014
+ // Dwarf5
+ DW_LANG_Go = 0x0016
+
+ DW_LANG_lo_user = 0x8000
+ DW_LANG_hi_user = 0xffff
+)
+
+// Table 32
+const (
+ DW_ID_case_sensitive = 0x00
+ DW_ID_up_case = 0x01
+ DW_ID_down_case = 0x02
+ DW_ID_case_insensitive = 0x03
+)
+
+// Table 33
+const (
+ DW_CC_normal = 0x01
+ DW_CC_program = 0x02
+ DW_CC_nocall = 0x03
+ DW_CC_lo_user = 0x40
+ DW_CC_hi_user = 0xff
+)
+
+// Table 34
+const (
+ DW_INL_not_inlined = 0x00
+ DW_INL_inlined = 0x01
+ DW_INL_declared_not_inlined = 0x02
+ DW_INL_declared_inlined = 0x03
+)
+
+// Table 35
+const (
+ DW_ORD_row_major = 0x00
+ DW_ORD_col_major = 0x01
+)
+
+// Table 36
+const (
+ DW_DSC_label = 0x00
+ DW_DSC_range = 0x01
+)
+
+// Table 37
+const (
+ DW_LNS_copy = 0x01
+ DW_LNS_advance_pc = 0x02
+ DW_LNS_advance_line = 0x03
+ DW_LNS_set_file = 0x04
+ DW_LNS_set_column = 0x05
+ DW_LNS_negate_stmt = 0x06
+ DW_LNS_set_basic_block = 0x07
+ DW_LNS_const_add_pc = 0x08
+ DW_LNS_fixed_advance_pc = 0x09
+ // Dwarf3
+ DW_LNS_set_prologue_end = 0x0a
+ DW_LNS_set_epilogue_begin = 0x0b
+ DW_LNS_set_isa = 0x0c
+)
+
+// Table 38
+const (
+ DW_LNE_end_sequence = 0x01
+ DW_LNE_set_address = 0x02
+ DW_LNE_define_file = 0x03
+ DW_LNE_lo_user = 0x80
+ DW_LNE_hi_user = 0xff
+)
+
+// Table 39
+const (
+ DW_MACINFO_define = 0x01
+ DW_MACINFO_undef = 0x02
+ DW_MACINFO_start_file = 0x03
+ DW_MACINFO_end_file = 0x04
+ DW_MACINFO_vendor_ext = 0xff
+)
+
+// Table 40.
+const (
+ // operand,...
+ DW_CFA_nop = 0x00
+ DW_CFA_set_loc = 0x01 // address
+ DW_CFA_advance_loc1 = 0x02 // 1-byte delta
+ DW_CFA_advance_loc2 = 0x03 // 2-byte delta
+ DW_CFA_advance_loc4 = 0x04 // 4-byte delta
+ DW_CFA_offset_extended = 0x05 // ULEB128 register, ULEB128 offset
+ DW_CFA_restore_extended = 0x06 // ULEB128 register
+ DW_CFA_undefined = 0x07 // ULEB128 register
+ DW_CFA_same_value = 0x08 // ULEB128 register
+ DW_CFA_register = 0x09 // ULEB128 register, ULEB128 register
+ DW_CFA_remember_state = 0x0a
+ DW_CFA_restore_state = 0x0b
+
+ DW_CFA_def_cfa = 0x0c // ULEB128 register, ULEB128 offset
+ DW_CFA_def_cfa_register = 0x0d // ULEB128 register
+ DW_CFA_def_cfa_offset = 0x0e // ULEB128 offset
+ DW_CFA_def_cfa_expression = 0x0f // BLOCK
+ DW_CFA_expression = 0x10 // ULEB128 register, BLOCK
+ DW_CFA_offset_extended_sf = 0x11 // ULEB128 register, SLEB128 offset
+ DW_CFA_def_cfa_sf = 0x12 // ULEB128 register, SLEB128 offset
+ DW_CFA_def_cfa_offset_sf = 0x13 // SLEB128 offset
+ DW_CFA_val_offset = 0x14 // ULEB128, ULEB128
+ DW_CFA_val_offset_sf = 0x15 // ULEB128, SLEB128
+ DW_CFA_val_expression = 0x16 // ULEB128, BLOCK
+
+ DW_CFA_lo_user = 0x1c
+ DW_CFA_hi_user = 0x3f
+
+ // Opcodes that take an addend operand.
+ DW_CFA_advance_loc = 0x1 << 6 // +delta
+ DW_CFA_offset = 0x2 << 6 // +register (ULEB128 offset)
+ DW_CFA_restore = 0x3 << 6 // +register
+)
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-01 20:26:01 +0000