// Derived from Inferno utils/6l/l.h and related files. // https://bitbucket.org/inferno-os/inferno-os/src/default/utils/6l/l.h // // Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved. // Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net) // Portions Copyright © 1997-1999 Vita Nuova Limited // Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com) // Portions Copyright © 2004,2006 Bruce Ellis // Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net) // Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others // Portions Copyright © 2009 The Go Authors. All rights reserved. // // Permission is hereby granted, free of charge, to any person obtaining a copy // of this software and associated documentation files (the "Software"), to deal // in the Software without restriction, including without limitation the rights // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell // copies of the Software, and to permit persons to whom the Software is // furnished to do so, subject to the following conditions: // // The above copyright notice and this permission notice shall be included in // all copies or substantial portions of the Software. // // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN // THE SOFTWARE. package ld import ( "bufio" "cmd/internal/objabi" "cmd/internal/sys" "cmd/link/internal/sym" "debug/elf" "fmt" ) type Shlib struct { Path string Hash []byte Deps []string File *elf.File gcdataAddresses map[*sym.Symbol]uint64 } // Link holds the context for writing object code from a compiler // or for reading that input into the linker. type Link struct { Out *OutBuf Syms *sym.Symbols Arch *sys.Arch Debugvlog int Bso *bufio.Writer Loaded bool // set after all inputs have been loaded as symbols IsELF bool HeadType objabi.HeadType linkShared bool // link against installed Go shared libraries LinkMode LinkMode BuildMode BuildMode Tlsg *sym.Symbol Libdir []string Library []*sym.Library LibraryByPkg map[string]*sym.Library Shlibs []Shlib Tlsoffset int Textp []*sym.Symbol Filesyms []*sym.Symbol Moduledata *sym.Symbol PackageFile map[string]string PackageShlib map[string]string tramps []*sym.Symbol // trampolines } // The smallest possible offset from the hardware stack pointer to a local // variable on the stack. Architectures that use a link register save its value // on the stack in the function prologue and so always have a pointer between // the hardware stack pointer and the local variable area. func (ctxt *Link) FixedFrameSize() int64 { switch ctxt.Arch.Family { case sys.AMD64, sys.I386: return 0 case sys.PPC64: // PIC code on ppc64le requires 32 bytes of stack, and it's easier to // just use that much stack always on ppc64x. return int64(4 * ctxt.Arch.PtrSize) default: return int64(ctxt.Arch.PtrSize) } } func (ctxt *Link) Logf(format string, args ...interface{}) { fmt.Fprintf(ctxt.Bso, format, args...) ctxt.Bso.Flush() } func addImports(ctxt *Link, l *sym.Library, pn string) { pkg := objabi.PathToPrefix(l.Pkg) for _, importStr := range l.ImportStrings { lib := addlib(ctxt, pkg, pn, importStr) if lib != nil { l.Imports = append(l.Imports, lib) } } l.ImportStrings = nil } type Pciter struct { d sym.Pcdata p []byte pc uint32 nextpc uint32 pcscale uint32 value int32 start int done int }