Source file src/cmd/link/internal/arm64/obj.go

     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 arm64
    32	
    33	import (
    34		"cmd/internal/objabi"
    35		"cmd/internal/sys"
    36		"cmd/link/internal/ld"
    37	)
    38	
    39	func Init() (*sys.Arch, ld.Arch) {
    40		arch := sys.ArchARM64
    41	
    42		theArch := ld.Arch{
    43			Funcalign:  funcAlign,
    44			Maxalign:   maxAlign,
    45			Minalign:   minAlign,
    46			Dwarfregsp: dwarfRegSP,
    47			Dwarfreglr: dwarfRegLR,
    48	
    49			Adddynrel:        adddynrel,
    50			Archinit:         archinit,
    51			Archreloc:        archreloc,
    52			Archrelocvariant: archrelocvariant,
    53			Asmb:             asmb,
    54			Asmb2:            asmb2,
    55			Elfreloc1:        elfreloc1,
    56			Elfsetupplt:      elfsetupplt,
    57			Gentext:          gentext,
    58			Machoreloc1:      machoreloc1,
    59	
    60			Linuxdynld: "/lib/ld-linux-aarch64.so.1",
    61	
    62			Freebsddynld:   "XXX",
    63			Openbsddynld:   "/usr/libexec/ld.so",
    64			Netbsddynld:    "/libexec/ld.elf_so",
    65			Dragonflydynld: "XXX",
    66			Solarisdynld:   "XXX",
    67		}
    68	
    69		return arch, theArch
    70	}
    71	
    72	func archinit(ctxt *ld.Link) {
    73		switch ctxt.HeadType {
    74		default:
    75			ld.Exitf("unknown -H option: %v", ctxt.HeadType)
    76	
    77		case objabi.Hplan9: /* plan 9 */
    78			ld.HEADR = 32
    79	
    80			if *ld.FlagTextAddr == -1 {
    81				*ld.FlagTextAddr = 4096 + int64(ld.HEADR)
    82			}
    83			if *ld.FlagRound == -1 {
    84				*ld.FlagRound = 4096
    85			}
    86	
    87		case objabi.Hlinux, /* arm64 elf */
    88			objabi.Hnetbsd,
    89			objabi.Hopenbsd:
    90			ld.Elfinit(ctxt)
    91			ld.HEADR = ld.ELFRESERVE
    92			if *ld.FlagTextAddr == -1 {
    93				*ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
    94			}
    95			if *ld.FlagRound == -1 {
    96				*ld.FlagRound = 0x10000
    97			}
    98	
    99		case objabi.Hdarwin: /* apple MACH */
   100			ld.HEADR = ld.INITIAL_MACHO_HEADR
   101			if *ld.FlagTextAddr == -1 {
   102				*ld.FlagTextAddr = 4096 + int64(ld.HEADR)
   103			}
   104			if *ld.FlagRound == -1 {
   105				*ld.FlagRound = 4096
   106			}
   107	
   108		case objabi.Hnacl:
   109			ld.Elfinit(ctxt)
   110			ld.HEADR = 0x10000
   111			ld.Funcalign = 16
   112			if *ld.FlagTextAddr == -1 {
   113				*ld.FlagTextAddr = 0x20000
   114			}
   115			if *ld.FlagRound == -1 {
   116				*ld.FlagRound = 0x10000
   117			}
   118		}
   119	}
   120	

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