github.com/panjjo/go@v0.0.0-20161104043856-d62b31386338/src/cmd/link/internal/ppc64/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 © 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/obj"
    35  	"cmd/internal/sys"
    36  	"cmd/link/internal/ld"
    37  	"fmt"
    38  )
    39  
    40  func Init() {
    41  	if obj.GOARCH == "ppc64le" {
    42  		ld.SysArch = sys.ArchPPC64LE
    43  	} else {
    44  		ld.SysArch = sys.ArchPPC64
    45  	}
    46  
    47  	ld.Thearch.Funcalign = funcAlign
    48  	ld.Thearch.Maxalign = maxAlign
    49  	ld.Thearch.Minalign = minAlign
    50  	ld.Thearch.Dwarfregsp = dwarfRegSP
    51  	ld.Thearch.Dwarfreglr = dwarfRegLR
    52  
    53  	ld.Thearch.Adddynrel = adddynrel
    54  	ld.Thearch.Archinit = archinit
    55  	ld.Thearch.Archreloc = archreloc
    56  	ld.Thearch.Archrelocvariant = archrelocvariant
    57  	ld.Thearch.Asmb = asmb
    58  	ld.Thearch.Elfreloc1 = elfreloc1
    59  	ld.Thearch.Elfsetupplt = elfsetupplt
    60  	ld.Thearch.Gentext = gentext
    61  	ld.Thearch.Trampoline = trampoline
    62  	ld.Thearch.Machoreloc1 = machoreloc1
    63  	if ld.SysArch == sys.ArchPPC64LE {
    64  		ld.Thearch.Lput = ld.Lputl
    65  		ld.Thearch.Wput = ld.Wputl
    66  		ld.Thearch.Vput = ld.Vputl
    67  		ld.Thearch.Append16 = ld.Append16l
    68  		ld.Thearch.Append32 = ld.Append32l
    69  		ld.Thearch.Append64 = ld.Append64l
    70  	} else {
    71  		ld.Thearch.Lput = ld.Lputb
    72  		ld.Thearch.Wput = ld.Wputb
    73  		ld.Thearch.Vput = ld.Vputb
    74  		ld.Thearch.Append16 = ld.Append16b
    75  		ld.Thearch.Append32 = ld.Append32b
    76  		ld.Thearch.Append64 = ld.Append64b
    77  	}
    78  
    79  	// TODO(austin): ABI v1 uses /usr/lib/ld.so.1
    80  	ld.Thearch.Linuxdynld = "/lib64/ld64.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  
    94  	case obj.Hplan9: /* plan 9 */
    95  		ld.HEADR = 32
    96  
    97  		if *ld.FlagTextAddr == -1 {
    98  			*ld.FlagTextAddr = 4128
    99  		}
   100  		if *ld.FlagDataAddr == -1 {
   101  			*ld.FlagDataAddr = 0
   102  		}
   103  		if *ld.FlagRound == -1 {
   104  			*ld.FlagRound = 4096
   105  		}
   106  
   107  	case obj.Hlinux: /* ppc64 elf */
   108  		if ld.SysArch == sys.ArchPPC64 {
   109  			*ld.FlagD = true // TODO(austin): ELF ABI v1 not supported yet
   110  		}
   111  		ld.Elfinit(ctxt)
   112  		ld.HEADR = ld.ELFRESERVE
   113  		if *ld.FlagTextAddr == -1 {
   114  			*ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
   115  		}
   116  		if *ld.FlagDataAddr == -1 {
   117  			*ld.FlagDataAddr = 0
   118  		}
   119  		if *ld.FlagRound == -1 {
   120  			*ld.FlagRound = 0x10000
   121  		}
   122  
   123  	case obj.Hnacl:
   124  		ld.Elfinit(ctxt)
   125  		ld.HEADR = 0x10000
   126  		ld.Funcalign = 16
   127  		if *ld.FlagTextAddr == -1 {
   128  			*ld.FlagTextAddr = 0x20000
   129  		}
   130  		if *ld.FlagDataAddr == -1 {
   131  			*ld.FlagDataAddr = 0
   132  		}
   133  		if *ld.FlagRound == -1 {
   134  			*ld.FlagRound = 0x10000
   135  		}
   136  	}
   137  
   138  	if *ld.FlagDataAddr != 0 && *ld.FlagRound != 0 {
   139  		fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(*ld.FlagDataAddr), uint32(*ld.FlagRound))
   140  	}
   141  }