github.com/rakyll/go@v0.0.0-20170216000551-64c02460d703/src/cmd/link/internal/mips/obj.go (about)

     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 © 2016 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 mips
    32  
    33  import (
    34  	"cmd/internal/obj"
    35  	"cmd/internal/sys"
    36  	"cmd/link/internal/ld"
    37  	"fmt"
    38  )
    39  
    40  // Reading object files.
    41  
    42  func Init() {
    43  	if obj.GOARCH == "mipsle" {
    44  		ld.SysArch = sys.ArchMIPSLE
    45  	} else {
    46  		ld.SysArch = sys.ArchMIPS
    47  	}
    48  
    49  	ld.Thearch.Funcalign = FuncAlign
    50  	ld.Thearch.Maxalign = MaxAlign
    51  	ld.Thearch.Minalign = MinAlign
    52  	ld.Thearch.Dwarfregsp = DWARFREGSP
    53  	ld.Thearch.Dwarfreglr = DWARFREGLR
    54  
    55  	ld.Thearch.Adddynrel = adddynrel
    56  	ld.Thearch.Archinit = archinit
    57  	ld.Thearch.Archreloc = archreloc
    58  	ld.Thearch.Archrelocvariant = archrelocvariant
    59  	ld.Thearch.Asmb = asmb
    60  	ld.Thearch.Elfreloc1 = elfreloc1
    61  	ld.Thearch.Elfsetupplt = elfsetupplt
    62  	ld.Thearch.Gentext = gentext
    63  	ld.Thearch.Machoreloc1 = machoreloc1
    64  	if ld.SysArch == sys.ArchMIPSLE {
    65  		ld.Thearch.Lput = ld.Lputl
    66  		ld.Thearch.Wput = ld.Wputl
    67  		ld.Thearch.Vput = ld.Vputl
    68  		ld.Thearch.Append16 = ld.Append16l
    69  		ld.Thearch.Append32 = ld.Append32l
    70  		ld.Thearch.Append64 = ld.Append64l
    71  	} else {
    72  		ld.Thearch.Lput = ld.Lputb
    73  		ld.Thearch.Wput = ld.Wputb
    74  		ld.Thearch.Vput = ld.Vputb
    75  		ld.Thearch.Append16 = ld.Append16b
    76  		ld.Thearch.Append32 = ld.Append32b
    77  		ld.Thearch.Append64 = ld.Append64b
    78  	}
    79  
    80  	ld.Thearch.Linuxdynld = "/lib/ld.so.1"
    81  
    82  	ld.Thearch.Freebsddynld = "XXX"
    83  	ld.Thearch.Openbsddynld = "XXX"
    84  	ld.Thearch.Netbsddynld = "XXX"
    85  	ld.Thearch.Dragonflydynld = "XXX"
    86  	ld.Thearch.Solarisdynld = "XXX"
    87  }
    88  
    89  func archinit(ctxt *ld.Link) {
    90  	switch ld.Headtype {
    91  	default:
    92  		ld.Exitf("unknown -H option: %v", ld.Headtype)
    93  	case obj.Hlinux: /* mips elf */
    94  		ld.Elfinit(ctxt)
    95  		ld.HEADR = ld.ELFRESERVE
    96  		if *ld.FlagTextAddr == -1 {
    97  			*ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
    98  		}
    99  		if *ld.FlagDataAddr == -1 {
   100  			*ld.FlagDataAddr = 0
   101  		}
   102  		if *ld.FlagRound == -1 {
   103  			*ld.FlagRound = 0x10000
   104  		}
   105  	}
   106  
   107  	if *ld.FlagDataAddr != 0 && *ld.FlagRound != 0 {
   108  		fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(*ld.FlagDataAddr), uint32(*ld.FlagRound))
   109  	}
   110  }