obj.go

     1  // Inferno utils/5l/obj.c
     2  // https://bitbucket.org/inferno-os/inferno-os/src/master/utils/5l/obj.c
     3  //
     4  //	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
     5  //	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
     6  //	Portions Copyright © 1997-1999 Vita Nuova Limited
     7  //	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
     8  //	Portions Copyright © 2004,2006 Bruce Ellis
     9  //	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
    10  //	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
    11  //	Portions Copyright © 2009 The Go Authors. All rights reserved.
    12  //
    13  // Permission is hereby granted, free of charge, to any person obtaining a copy
    14  // of this software and associated documentation files (the "Software"), to deal
    15  // in the Software without restriction, including without limitation the rights
    16  // to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
    17  // copies of the Software, and to permit persons to whom the Software is
    18  // furnished to do so, subject to the following conditions:
    19  //
    20  // The above copyright notice and this permission notice shall be included in
    21  // all copies or substantial portions of the Software.
    22  //
    23  // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
    24  // IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
    25  // FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
    26  // AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
    27  // LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
    28  // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
    29  // THE SOFTWARE.
    30  
    31  package ppc64
    32  
    33  import (
    34  	"cmd/internal/objabi"
    35  	"cmd/internal/sys"
    36  	"cmd/link/internal/ld"
    37  	"internal/buildcfg"
    38  )
    39  
    40  func Init() (*sys.Arch, ld.Arch) {
    41  	arch := sys.ArchPPC64LE
    42  	dynld := "/lib64/ld64.so.2"
    43  	musl := "/lib/ld-musl-powerpc64le.so.1"
    44  
    45  	if buildcfg.GOARCH == "ppc64" {
    46  		arch = sys.ArchPPC64
    47  		dynld = "/lib64/ld64.so.1"
    48  		musl = "/lib/ld-musl-powerpc64.so.1"
    49  	}
    50  
    51  	theArch := ld.Arch{
    52  		Funcalign:  funcAlign,
    53  		Maxalign:   maxAlign,
    54  		Minalign:   minAlign,
    55  		Dwarfregsp: dwarfRegSP,
    56  		Dwarfreglr: dwarfRegLR,
    57  		TrampLimit: 0x1c00000,
    58  
    59  		Adddynrel:        adddynrel,
    60  		Archinit:         archinit,
    61  		Archreloc:        archreloc,
    62  		Archrelocvariant: archrelocvariant,
    63  		Extreloc:         extreloc,
    64  		Gentext:          gentext,
    65  		Trampoline:       trampoline,
    66  		Machoreloc1:      machoreloc1,
    67  		Xcoffreloc1:      xcoffreloc1,
    68  
    69  		ELF: ld.ELFArch{
    70  			Linuxdynld:     dynld,
    71  			LinuxdynldMusl: musl,
    72  
    73  			Freebsddynld:   "XXX",
    74  			Openbsddynld:   "/usr/libexec/ld.so",
    75  			Netbsddynld:    "XXX",
    76  			Dragonflydynld: "XXX",
    77  			Solarisdynld:   "XXX",
    78  
    79  			Reloc1:    elfreloc1,
    80  			RelocSize: 24,
    81  			SetupPLT:  elfsetupplt,
    82  		},
    83  	}
    84  
    85  	return arch, theArch
    86  }
    87  
    88  func archinit(ctxt *ld.Link) {
    89  	switch ctxt.HeadType {
    90  	default:
    91  		ld.Exitf("unknown -H option: %v", ctxt.HeadType)
    92  
    93  	case objabi.Hplan9: /* plan 9 */
    94  		ld.HEADR = 32
    95  		if *ld.FlagRound == -1 {
    96  			*ld.FlagRound = 4096
    97  		}
    98  		if *ld.FlagTextAddr == -1 {
    99  			*ld.FlagTextAddr = ld.Rnd(4096, *ld.FlagRound) + int64(ld.HEADR)
   100  		}
   101  
   102  	case objabi.Hlinux, /* ppc64 elf */
   103  		objabi.Hopenbsd:
   104  		ld.Elfinit(ctxt)
   105  		ld.HEADR = ld.ELFRESERVE
   106  		if *ld.FlagRound == -1 {
   107  			*ld.FlagRound = 0x10000
   108  		}
   109  		if *ld.FlagTextAddr == -1 {
   110  			*ld.FlagTextAddr = ld.Rnd(0x10000, *ld.FlagRound) + int64(ld.HEADR)
   111  		}
   112  
   113  	case objabi.Haix:
   114  		ld.Xcoffinit(ctxt)
   115  	}
   116  }
   117
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