1 files changed, 120 insertions, 0 deletions
diff --git a/src/cmd/link/internal/arm64/obj.go b/src/cmd/link/internal/arm64/obj.go
new file mode 100644
index 0000000..a47be0b
--- /dev/null
+++ b/src/cmd/link/internal/arm64/obj.go
@@ -0,0 +1,120 @@
+// Inferno utils/5l/obj.c
+// https://bitbucket.org/inferno-os/inferno-os/src/master/utils/5l/obj.c
+//
+//	Copyright © 1994-1999 Lucent Technologies Inc.  All rights reserved.
+//	Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
+//	Portions Copyright © 1997-1999 Vita Nuova Limited
+//	Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
+//	Portions Copyright © 2004,2006 Bruce Ellis
+//	Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
+//	Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
+//	Portions Copyright © 2009 The Go Authors. All rights reserved.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+package arm64
+
+import (
+	"cmd/internal/objabi"
+	"cmd/internal/sys"
+	"cmd/link/internal/ld"
+)
+
+func Init() (*sys.Arch, ld.Arch) {
+	arch := sys.ArchARM64
+
+	theArch := ld.Arch{
+		Funcalign:  funcAlign,
+		Maxalign:   maxAlign,
+		Minalign:   minAlign,
+		Dwarfregsp: dwarfRegSP,
+		Dwarfreglr: dwarfRegLR,
+		TrampLimit: 0x7c00000, // 26-bit signed offset * 4, leave room for PLT etc.
+
+		Adddynrel:        adddynrel,
+		Archinit:         archinit,
+		Archreloc:        archreloc,
+		Archrelocvariant: archrelocvariant,
+		Extreloc:         extreloc,
+		Elfreloc1:        elfreloc1,
+		ElfrelocSize:     24,
+		Elfsetupplt:      elfsetupplt,
+		Gentext:          gentext,
+		GenSymsLate:      gensymlate,
+		Machoreloc1:      machoreloc1,
+		MachorelocSize:   8,
+		PEreloc1:         pereloc1,
+		Trampoline:       trampoline,
+
+		Androiddynld:   "/system/bin/linker64",
+		Linuxdynld:     "/lib/ld-linux-aarch64.so.1",
+		LinuxdynldMusl: "/lib/ld-musl-aarch64.so.1",
+
+		Freebsddynld:   "/usr/libexec/ld-elf.so.1",
+		Openbsddynld:   "/usr/libexec/ld.so",
+		Netbsddynld:    "/libexec/ld.elf_so",
+		Dragonflydynld: "XXX",
+		Solarisdynld:   "XXX",
+	}
+
+	return arch, theArch
+}
+
+func archinit(ctxt *ld.Link) {
+	switch ctxt.HeadType {
+	default:
+		ld.Exitf("unknown -H option: %v", ctxt.HeadType)
+
+	case objabi.Hplan9: /* plan 9 */
+		ld.HEADR = 32
+
+		if *ld.FlagTextAddr == -1 {
+			*ld.FlagTextAddr = 4096 + int64(ld.HEADR)
+		}
+		if *ld.FlagRound == -1 {
+			*ld.FlagRound = 4096
+		}
+
+	case objabi.Hlinux, /* arm64 elf */
+		objabi.Hfreebsd,
+		objabi.Hnetbsd,
+		objabi.Hopenbsd:
+		ld.Elfinit(ctxt)
+		ld.HEADR = ld.ELFRESERVE
+		if *ld.FlagTextAddr == -1 {
+			*ld.FlagTextAddr = 0x10000 + int64(ld.HEADR)
+		}
+		if *ld.FlagRound == -1 {
+			*ld.FlagRound = 0x10000
+		}
+
+	case objabi.Hdarwin: /* apple MACH */
+		ld.HEADR = ld.INITIAL_MACHO_HEADR
+		if *ld.FlagTextAddr == -1 {
+			*ld.FlagTextAddr = 1<<32 + int64(ld.HEADR)
+		}
+		if *ld.FlagRound == -1 {
+			*ld.FlagRound = 16384 // 16K page alignment
+		}
+
+	case objabi.Hwindows: /* PE executable */
+		// ld.HEADR, ld.FlagTextAddr, ld.FlagRound are set in ld.Peinit
+		return
+	}
+}