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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 Extreloc: extreloc,
54 Elfreloc1: elfreloc1,
55 ElfrelocSize: 24,
56 Elfsetupplt: elfsetupplt,
57 Gentext: gentext,
58 GenSymsLate: gensymlate,
59 Machoreloc1: machoreloc1,
60 MachorelocSize: 8,
61
62 Androiddynld: "/system/bin/linker64",
63 Linuxdynld: "/lib/ld-linux-aarch64.so.1",
64
65 Freebsddynld: "/usr/libexec/ld-elf.so.1",
66 Openbsddynld: "/usr/libexec/ld.so",
67 Netbsddynld: "/libexec/ld.elf_so",
68 Dragonflydynld: "XXX",
69 Solarisdynld: "XXX",
70 }
71
72 return arch, theArch
73 }
74
75 func archinit(ctxt *ld.Link) {
76 switch ctxt.HeadType {
77 default:
78 ld.Exitf("unknown -H option: %v", ctxt.HeadType)
79
80 case objabi.Hplan9:
81 ld.HEADR = 32
82
83 if *ld.FlagTextAddr == -1 {
84 *ld.FlagTextAddr = 4096 + int64(ld.HEADR)
85 }
86 if *ld.FlagRound == -1 {
87 *ld.FlagRound = 4096
88 }
89
90 case objabi.Hlinux,
91 objabi.Hfreebsd,
92 objabi.Hnetbsd,
93 objabi.Hopenbsd:
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.FlagRound == -1 {
100 *ld.FlagRound = 0x10000
101 }
102
103 case objabi.Hdarwin:
104 ld.HEADR = ld.INITIAL_MACHO_HEADR
105 if *ld.FlagTextAddr == -1 {
106 *ld.FlagTextAddr = 1<<32 + int64(ld.HEADR)
107 }
108 if *ld.FlagRound == -1 {
109 *ld.FlagRound = 16384
110 }
111 }
112 }
113
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