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Source file src/cmd/link/internal/mips64/obj.go

Documentation: cmd/link/internal/mips64

     1  // Inferno utils/5l/obj.c
     2  // https://bitbucket.org/inferno-os/inferno-os/src/default/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 mips64
    32  
    33  import (
    34  	"cmd/internal/objabi"
    35  	"cmd/internal/sys"
    36  	"cmd/link/internal/ld"
    37  	"fmt"
    38  )
    39  
    40  func Init() (*sys.Arch, ld.Arch) {
    41  	arch := sys.ArchMIPS64
    42  	if objabi.GOARCH == "mips64le" {
    43  		arch = sys.ArchMIPS64LE
    44  	}
    45  
    46  	theArch := ld.Arch{
    47  		Funcalign:        funcAlign,
    48  		Maxalign:         maxAlign,
    49  		Minalign:         minAlign,
    50  		Dwarfregsp:       dwarfRegSP,
    51  		Dwarfreglr:       dwarfRegLR,
    52  		Adddynrel:        adddynrel,
    53  		Archinit:         archinit,
    54  		Archreloc:        archreloc,
    55  		Archrelocvariant: archrelocvariant,
    56  		Asmb:             asmb,
    57  		Elfreloc1:        elfreloc1,
    58  		Elfsetupplt:      elfsetupplt,
    59  		Gentext:          gentext,
    60  		Machoreloc1:      machoreloc1,
    61  
    62  		Linuxdynld:     "/lib64/ld64.so.1",
    63  		Freebsddynld:   "XXX",
    64  		Openbsddynld:   "XXX",
    65  		Netbsddynld:    "XXX",
    66  		Dragonflydynld: "XXX",
    67  		Solarisdynld:   "XXX",
    68  	}
    69  
    70  	return arch, theArch
    71  }
    72  
    73  func archinit(ctxt *ld.Link) {
    74  	switch ctxt.HeadType {
    75  	default:
    76  		ld.Exitf("unknown -H option: %v", ctxt.HeadType)
    77  
    78  	case objabi.Hplan9: /* plan 9 */
    79  		ld.HEADR = 32
    80  
    81  		if *ld.FlagTextAddr == -1 {
    82  			*ld.FlagTextAddr = 16*1024 + int64(ld.HEADR)
    83  		}
    84  		if *ld.FlagDataAddr == -1 {
    85  			*ld.FlagDataAddr = 0
    86  		}
    87  		if *ld.FlagRound == -1 {
    88  			*ld.FlagRound = 16 * 1024
    89  		}
    90  
    91  	case objabi.Hlinux: /* mips64 elf */
    92  		ld.Elfinit(ctxt)
    93  		ld.HEADR = ld.ELFRESERVE
    94  		if *ld.FlagTextAddr == -1 {
    95  			*ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
    96  		}
    97  		if *ld.FlagDataAddr == -1 {
    98  			*ld.FlagDataAddr = 0
    99  		}
   100  		if *ld.FlagRound == -1 {
   101  			*ld.FlagRound = 0x10000
   102  		}
   103  
   104  	case objabi.Hnacl:
   105  		ld.Elfinit(ctxt)
   106  		ld.HEADR = 0x10000
   107  		ld.Funcalign = 16
   108  		if *ld.FlagTextAddr == -1 {
   109  			*ld.FlagTextAddr = 0x20000
   110  		}
   111  		if *ld.FlagDataAddr == -1 {
   112  			*ld.FlagDataAddr = 0
   113  		}
   114  		if *ld.FlagRound == -1 {
   115  			*ld.FlagRound = 0x10000
   116  		}
   117  	}
   118  
   119  	if *ld.FlagDataAddr != 0 && *ld.FlagRound != 0 {
   120  		fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(*ld.FlagDataAddr), uint32(*ld.FlagRound))
   121  	}
   122  }
   123  

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