compilation_unit.go

     1  // Copyright 2019 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package sym
     6  
     7  import "cmd/internal/dwarf"
     8  
     9  // LoaderSym holds a loader.Sym value. We can't refer to this
    10  // type from the sym package since loader imports sym.
    11  type LoaderSym int
    12  
    13  // A CompilationUnit represents a set of source files that are compiled
    14  // together. Since all Go sources in a Go package are compiled together,
    15  // there's one CompilationUnit per package that represents all Go sources in
    16  // that package, plus one for each assembly file.
    17  //
    18  // Equivalently, there's one CompilationUnit per object file in each Library
    19  // loaded by the linker.
    20  //
    21  // These are used for both DWARF and pclntab generation.
    22  type CompilationUnit struct {
    23  	Lib       *Library      // Our library
    24  	PclnIndex int           // Index of this CU in pclntab
    25  	PCs       []dwarf.Range // PC ranges, relative to Textp[0]
    26  	DWInfo    *dwarf.DWDie  // CU root DIE
    27  	FileTable []string      // The file table used in this compilation unit.
    28  
    29  	Consts    LoaderSym   // Package constants DIEs
    30  	FuncDIEs  []LoaderSym // Function DIE subtrees
    31  	VarDIEs   []LoaderSym // Global variable DIEs
    32  	AbsFnDIEs []LoaderSym // Abstract function DIE subtrees
    33  	RangeSyms []LoaderSym // Symbols for debug_range
    34  	Textp     []LoaderSym // Text symbols in this CU
    35  }
    36
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