diff options
Diffstat (limited to 'src/cmd/link/internal/s390x')
| -rw-r--r-- | src/cmd/link/internal/s390x/asm.go | 455 | ||||
| -rw-r--r-- | src/cmd/link/internal/s390x/l.go | 74 | ||||
| -rw-r--r-- | src/cmd/link/internal/s390x/obj.go | 87 |
3 files changed, 616 insertions, 0 deletions
diff --git a/src/cmd/link/internal/s390x/asm.go b/src/cmd/link/internal/s390x/asm.go new file mode 100644 index 0000000..78d2cc8 --- /dev/null +++ b/src/cmd/link/internal/s390x/asm.go @@ -0,0 +1,455 @@ +// Inferno utils/5l/asm.c +// https://bitbucket.org/inferno-os/inferno-os/src/master/utils/5l/asm.c +// +// 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 s390x + +import ( + "cmd/internal/objabi" + "cmd/internal/sys" + "cmd/link/internal/ld" + "cmd/link/internal/loader" + "cmd/link/internal/sym" + "debug/elf" +) + +// gentext generates assembly to append the local moduledata to the global +// moduledata linked list at initialization time. This is only done if the runtime +// is in a different module. +// +// <go.link.addmoduledata>: +// larl %r2, <local.moduledata> +// jg <runtime.addmoduledata@plt> +// undef +// +// The job of appending the moduledata is delegated to runtime.addmoduledata. +func gentext(ctxt *ld.Link, ldr *loader.Loader) { + initfunc, addmoduledata := ld.PrepareAddmoduledata(ctxt) + if initfunc == nil { + return + } + + // larl %r2, <local.moduledata> + initfunc.AddUint8(0xc0) + initfunc.AddUint8(0x20) + initfunc.AddSymRef(ctxt.Arch, ctxt.Moduledata, 6, objabi.R_PCREL, 4) + r1 := initfunc.Relocs() + ldr.SetRelocVariant(initfunc.Sym(), r1.Count()-1, sym.RV_390_DBL) + + // jg <runtime.addmoduledata[@plt]> + initfunc.AddUint8(0xc0) + initfunc.AddUint8(0xf4) + initfunc.AddSymRef(ctxt.Arch, addmoduledata, 6, objabi.R_CALL, 4) + r2 := initfunc.Relocs() + ldr.SetRelocVariant(initfunc.Sym(), r2.Count()-1, sym.RV_390_DBL) + + // undef (for debugging) + initfunc.AddUint32(ctxt.Arch, 0) +} + +func adddynrel(target *ld.Target, ldr *loader.Loader, syms *ld.ArchSyms, s loader.Sym, r loader.Reloc, rIdx int) bool { + targ := r.Sym() + var targType sym.SymKind + if targ != 0 { + targType = ldr.SymType(targ) + } + + switch r.Type() { + default: + if r.Type() >= objabi.ElfRelocOffset { + ldr.Errorf(s, "unexpected relocation type %d", r.Type()) + return false + } + + // Handle relocations found in ELF object files. + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_12), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_GOT12): + ldr.Errorf(s, "s390x 12-bit relocations have not been implemented (relocation type %d)", r.Type()-objabi.ElfRelocOffset) + return false + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_8), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_16), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_32), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_64): + if targType == sym.SDYNIMPORT { + ldr.Errorf(s, "unexpected R_390_nn relocation for dynamic symbol %s", ldr.SymName(targ)) + } + + su := ldr.MakeSymbolUpdater(s) + su.SetRelocType(rIdx, objabi.R_ADDR) + return true + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_PC16), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_PC32), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_PC64): + if targType == sym.SDYNIMPORT { + ldr.Errorf(s, "unexpected R_390_PCnn relocation for dynamic symbol %s", ldr.SymName(targ)) + } + // TODO(mwhudson): the test of VisibilityHidden here probably doesn't make + // sense and should be removed when someone has thought about it properly. + if (targType == 0 || targType == sym.SXREF) && !ldr.AttrVisibilityHidden(targ) { + ldr.Errorf(s, "unknown symbol %s in pcrel", ldr.SymName(targ)) + } + su := ldr.MakeSymbolUpdater(s) + su.SetRelocType(rIdx, objabi.R_PCREL) + su.SetRelocAdd(rIdx, r.Add()+int64(r.Siz())) + return true + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_GOT16), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_GOT32), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_GOT64): + ldr.Errorf(s, "unimplemented S390x relocation: %v", r.Type()-objabi.ElfRelocOffset) + return true + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_PLT16DBL), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_PLT32DBL): + su := ldr.MakeSymbolUpdater(s) + su.SetRelocType(rIdx, objabi.R_PCREL) + ldr.SetRelocVariant(s, rIdx, sym.RV_390_DBL) + su.SetRelocAdd(rIdx, r.Add()+int64(r.Siz())) + if targType == sym.SDYNIMPORT { + addpltsym(target, ldr, syms, targ) + r.SetSym(syms.PLT) + su.SetRelocAdd(rIdx, r.Add()+int64(ldr.SymPlt(targ))) + } + return true + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_PLT32), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_PLT64): + su := ldr.MakeSymbolUpdater(s) + su.SetRelocType(rIdx, objabi.R_PCREL) + su.SetRelocAdd(rIdx, r.Add()+int64(r.Siz())) + if targType == sym.SDYNIMPORT { + addpltsym(target, ldr, syms, targ) + r.SetSym(syms.PLT) + su.SetRelocAdd(rIdx, r.Add()+int64(ldr.SymPlt(targ))) + } + return true + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_COPY): + ldr.Errorf(s, "unimplemented S390x relocation: %v", r.Type()-objabi.ElfRelocOffset) + return false + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_GLOB_DAT): + ldr.Errorf(s, "unimplemented S390x relocation: %v", r.Type()-objabi.ElfRelocOffset) + return false + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_JMP_SLOT): + ldr.Errorf(s, "unimplemented S390x relocation: %v", r.Type()-objabi.ElfRelocOffset) + return false + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_RELATIVE): + ldr.Errorf(s, "unimplemented S390x relocation: %v", r.Type()-objabi.ElfRelocOffset) + return false + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_GOTOFF): + if targType == sym.SDYNIMPORT { + ldr.Errorf(s, "unexpected R_390_GOTOFF relocation for dynamic symbol %s", ldr.SymName(targ)) + } + su := ldr.MakeSymbolUpdater(s) + su.SetRelocType(rIdx, objabi.R_GOTOFF) + return true + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_GOTPC): + su := ldr.MakeSymbolUpdater(s) + su.SetRelocType(rIdx, objabi.R_PCREL) + r.SetSym(syms.GOT) + su.SetRelocAdd(rIdx, r.Add()+int64(r.Siz())) + return true + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_PC16DBL), + objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_PC32DBL): + su := ldr.MakeSymbolUpdater(s) + su.SetRelocType(rIdx, objabi.R_PCREL) + ldr.SetRelocVariant(s, rIdx, sym.RV_390_DBL) + su.SetRelocAdd(rIdx, r.Add()+int64(r.Siz())) + if targType == sym.SDYNIMPORT { + ldr.Errorf(s, "unexpected R_390_PCnnDBL relocation for dynamic symbol %s", ldr.SymName(targ)) + } + return true + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_GOTPCDBL): + su := ldr.MakeSymbolUpdater(s) + su.SetRelocType(rIdx, objabi.R_PCREL) + ldr.SetRelocVariant(s, rIdx, sym.RV_390_DBL) + r.SetSym(syms.GOT) + su.SetRelocAdd(rIdx, r.Add()+int64(r.Siz())) + return true + + case objabi.ElfRelocOffset + objabi.RelocType(elf.R_390_GOTENT): + ld.AddGotSym(target, ldr, syms, targ, uint32(elf.R_390_GLOB_DAT)) + su := ldr.MakeSymbolUpdater(s) + su.SetRelocType(rIdx, objabi.R_PCREL) + ldr.SetRelocVariant(s, rIdx, sym.RV_390_DBL) + r.SetSym(syms.GOT) + su.SetRelocAdd(rIdx, r.Add()+int64(ldr.SymGot(targ))+int64(r.Siz())) + return true + } + // Handle references to ELF symbols from our own object files. + if targType != sym.SDYNIMPORT { + return true + } + + return false +} + +func elfreloc1(ctxt *ld.Link, out *ld.OutBuf, ldr *loader.Loader, s loader.Sym, r loader.ExtReloc, ri int, sectoff int64) bool { + out.Write64(uint64(sectoff)) + + elfsym := ld.ElfSymForReloc(ctxt, r.Xsym) + siz := r.Size + switch r.Type { + default: + return false + case objabi.R_TLS_LE: + switch siz { + default: + return false + case 4: + // WARNING - silently ignored by linker in ELF64 + out.Write64(uint64(elf.R_390_TLS_LE32) | uint64(elfsym)<<32) + case 8: + // WARNING - silently ignored by linker in ELF32 + out.Write64(uint64(elf.R_390_TLS_LE64) | uint64(elfsym)<<32) + } + case objabi.R_TLS_IE: + switch siz { + default: + return false + case 4: + out.Write64(uint64(elf.R_390_TLS_IEENT) | uint64(elfsym)<<32) + } + case objabi.R_ADDR, objabi.R_DWARFSECREF: + switch siz { + default: + return false + case 4: + out.Write64(uint64(elf.R_390_32) | uint64(elfsym)<<32) + case 8: + out.Write64(uint64(elf.R_390_64) | uint64(elfsym)<<32) + } + case objabi.R_GOTPCREL: + if siz == 4 { + out.Write64(uint64(elf.R_390_GOTENT) | uint64(elfsym)<<32) + } else { + return false + } + case objabi.R_PCREL, objabi.R_PCRELDBL, objabi.R_CALL: + elfrel := elf.R_390_NONE + rVariant := ldr.RelocVariant(s, ri) + isdbl := rVariant&sym.RV_TYPE_MASK == sym.RV_390_DBL + // TODO(mundaym): all DBL style relocations should be + // signalled using the variant - see issue 14218. + switch r.Type { + case objabi.R_PCRELDBL, objabi.R_CALL: + isdbl = true + } + if ldr.SymType(r.Xsym) == sym.SDYNIMPORT && (ldr.SymElfType(r.Xsym) == elf.STT_FUNC || r.Type == objabi.R_CALL) { + if isdbl { + switch siz { + case 2: + elfrel = elf.R_390_PLT16DBL + case 4: + elfrel = elf.R_390_PLT32DBL + } + } else { + switch siz { + case 4: + elfrel = elf.R_390_PLT32 + case 8: + elfrel = elf.R_390_PLT64 + } + } + } else { + if isdbl { + switch siz { + case 2: + elfrel = elf.R_390_PC16DBL + case 4: + elfrel = elf.R_390_PC32DBL + } + } else { + switch siz { + case 2: + elfrel = elf.R_390_PC16 + case 4: + elfrel = elf.R_390_PC32 + case 8: + elfrel = elf.R_390_PC64 + } + } + } + if elfrel == elf.R_390_NONE { + return false // unsupported size/dbl combination + } + out.Write64(uint64(elfrel) | uint64(elfsym)<<32) + } + + out.Write64(uint64(r.Xadd)) + return true +} + +func elfsetupplt(ctxt *ld.Link, plt, got *loader.SymbolBuilder, dynamic loader.Sym) { + if plt.Size() == 0 { + // stg %r1,56(%r15) + plt.AddUint8(0xe3) + plt.AddUint8(0x10) + plt.AddUint8(0xf0) + plt.AddUint8(0x38) + plt.AddUint8(0x00) + plt.AddUint8(0x24) + // larl %r1,_GLOBAL_OFFSET_TABLE_ + plt.AddUint8(0xc0) + plt.AddUint8(0x10) + plt.AddSymRef(ctxt.Arch, got.Sym(), 6, objabi.R_PCRELDBL, 4) + // mvc 48(8,%r15),8(%r1) + plt.AddUint8(0xd2) + plt.AddUint8(0x07) + plt.AddUint8(0xf0) + plt.AddUint8(0x30) + plt.AddUint8(0x10) + plt.AddUint8(0x08) + // lg %r1,16(%r1) + plt.AddUint8(0xe3) + plt.AddUint8(0x10) + plt.AddUint8(0x10) + plt.AddUint8(0x10) + plt.AddUint8(0x00) + plt.AddUint8(0x04) + // br %r1 + plt.AddUint8(0x07) + plt.AddUint8(0xf1) + // nopr %r0 + plt.AddUint8(0x07) + plt.AddUint8(0x00) + // nopr %r0 + plt.AddUint8(0x07) + plt.AddUint8(0x00) + // nopr %r0 + plt.AddUint8(0x07) + plt.AddUint8(0x00) + + // assume got->size == 0 too + got.AddAddrPlus(ctxt.Arch, dynamic, 0) + + got.AddUint64(ctxt.Arch, 0) + got.AddUint64(ctxt.Arch, 0) + } +} + +func machoreloc1(*sys.Arch, *ld.OutBuf, *loader.Loader, loader.Sym, loader.ExtReloc, int64) bool { + return false +} + +func archreloc(target *ld.Target, ldr *loader.Loader, syms *ld.ArchSyms, r loader.Reloc, s loader.Sym, val int64) (o int64, nExtReloc int, ok bool) { + return val, 0, false +} + +func archrelocvariant(target *ld.Target, ldr *loader.Loader, r loader.Reloc, rv sym.RelocVariant, s loader.Sym, t int64) int64 { + switch rv & sym.RV_TYPE_MASK { + default: + ldr.Errorf(s, "unexpected relocation variant %d", rv) + return t + + case sym.RV_NONE: + return t + + case sym.RV_390_DBL: + if t&1 != 0 { + ldr.Errorf(s, "%s+%v is not 2-byte aligned", ldr.SymName(r.Sym()), ldr.SymValue(r.Sym())) + } + return t >> 1 + } +} + +func addpltsym(target *ld.Target, ldr *loader.Loader, syms *ld.ArchSyms, s loader.Sym) { + if ldr.SymPlt(s) >= 0 { + return + } + + ld.Adddynsym(ldr, target, syms, s) + + if target.IsElf() { + plt := ldr.MakeSymbolUpdater(syms.PLT) + got := ldr.MakeSymbolUpdater(syms.GOT) + rela := ldr.MakeSymbolUpdater(syms.RelaPLT) + if plt.Size() == 0 { + panic("plt is not set up") + } + // larl %r1,_GLOBAL_OFFSET_TABLE_+index + + plt.AddUint8(0xc0) + plt.AddUint8(0x10) + plt.AddPCRelPlus(target.Arch, got.Sym(), got.Size()+6) + pltrelocs := plt.Relocs() + ldr.SetRelocVariant(plt.Sym(), pltrelocs.Count()-1, sym.RV_390_DBL) + + // add to got: pointer to current pos in plt + got.AddAddrPlus(target.Arch, plt.Sym(), plt.Size()+8) // weird but correct + // lg %r1,0(%r1) + plt.AddUint8(0xe3) + plt.AddUint8(0x10) + plt.AddUint8(0x10) + plt.AddUint8(0x00) + plt.AddUint8(0x00) + plt.AddUint8(0x04) + // br %r1 + plt.AddUint8(0x07) + plt.AddUint8(0xf1) + // basr %r1,%r0 + plt.AddUint8(0x0d) + plt.AddUint8(0x10) + // lgf %r1,12(%r1) + plt.AddUint8(0xe3) + plt.AddUint8(0x10) + plt.AddUint8(0x10) + plt.AddUint8(0x0c) + plt.AddUint8(0x00) + plt.AddUint8(0x14) + // jg .plt + plt.AddUint8(0xc0) + plt.AddUint8(0xf4) + + plt.AddUint32(target.Arch, uint32(-((plt.Size() - 2) >> 1))) // roll-your-own relocation + //.plt index + plt.AddUint32(target.Arch, uint32(rela.Size())) // rela size before current entry + + // rela + rela.AddAddrPlus(target.Arch, got.Sym(), got.Size()-8) + + sDynid := ldr.SymDynid(s) + rela.AddUint64(target.Arch, elf.R_INFO(uint32(sDynid), uint32(elf.R_390_JMP_SLOT))) + rela.AddUint64(target.Arch, 0) + + ldr.SetPlt(s, int32(plt.Size()-32)) + + } else { + ldr.Errorf(s, "addpltsym: unsupported binary format") + } +} diff --git a/src/cmd/link/internal/s390x/l.go b/src/cmd/link/internal/s390x/l.go new file mode 100644 index 0000000..f040587 --- /dev/null +++ b/src/cmd/link/internal/s390x/l.go @@ -0,0 +1,74 @@ +// Inferno utils/5l/asm.c +// https://bitbucket.org/inferno-os/inferno-os/src/master/utils/5l/asm.c +// +// 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 s390x + +// Writing object files. + +// cmd/9l/l.h from Vita Nuova. +// +// 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 © 2000-2008 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 © 2000-2008 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. + +const ( + maxAlign = 32 // max data alignment + minAlign = 2 // min data alignment + funcAlign = 16 +) + +/* Used by ../internal/ld/dwarf.go */ +const ( + dwarfRegSP = 15 + dwarfRegLR = 14 +) diff --git a/src/cmd/link/internal/s390x/obj.go b/src/cmd/link/internal/s390x/obj.go new file mode 100644 index 0000000..8acc1d4 --- /dev/null +++ b/src/cmd/link/internal/s390x/obj.go @@ -0,0 +1,87 @@ +// Inferno utils/5l/obj.c +// https://bitbucket.org/inferno-os/inferno-os/src/master/utils/5l/obj.c +// +// 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 s390x + +import ( + "cmd/internal/objabi" + "cmd/internal/sys" + "cmd/link/internal/ld" +) + +func Init() (*sys.Arch, ld.Arch) { + arch := sys.ArchS390X + + theArch := ld.Arch{ + Funcalign: funcAlign, + Maxalign: maxAlign, + Minalign: minAlign, + Dwarfregsp: dwarfRegSP, + Dwarfreglr: dwarfRegLR, + + Adddynrel: adddynrel, + Archinit: archinit, + Archreloc: archreloc, + Archrelocvariant: archrelocvariant, + Elfreloc1: elfreloc1, + ElfrelocSize: 24, + Elfsetupplt: elfsetupplt, + Gentext: gentext, + Machoreloc1: machoreloc1, + + Linuxdynld: "/lib64/ld64.so.1", + + // not relevant for s390x + Freebsddynld: "XXX", + Openbsddynld: "XXX", + Netbsddynld: "XXX", + Dragonflydynld: "XXX", + Solarisdynld: "XXX", + } + + return arch, theArch +} + +func archinit(ctxt *ld.Link) { + switch ctxt.HeadType { + default: + ld.Exitf("unknown -H option: %v", ctxt.HeadType) + + case objabi.Hlinux: // s390x ELF + ld.Elfinit(ctxt) + ld.HEADR = ld.ELFRESERVE + if *ld.FlagTextAddr == -1 { + *ld.FlagTextAddr = 0x10000 + int64(ld.HEADR) + } + if *ld.FlagRound == -1 { + *ld.FlagRound = 0x10000 + } + } +} |