cmd/7g, cmd/7l, cmd/go: copy 9g/9l to 7g/7l, and build as tools

Kick start the upstreaming of the arm64 port. The only manual
change is cmd/go/pkg.go.

Change-Id: I0607ad045486f0998c4e21654b59276ca5348069
Reviewed-on: https://go-review.googlesource.com/7075Reviewed-by: Aram Hăvărneanu <aram@mgk.ro>
Run-TryBot: Aram Hăvărneanu <aram@mgk.ro>
TryBot-Result: Gobot Gobot <gobot@golang.org>

src/cmd/7g/galign.go

+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import (
+	"cmd/internal/gc"
+	"cmd/internal/obj"
+	"cmd/internal/obj/ppc64"
+)
+
+var thechar int = '9'
+
+var thestring string = "ppc64"
+
+var thelinkarch *obj.LinkArch
+
+func linkarchinit() {
+	thestring = obj.Getgoarch()
+	gc.Thearch.Thestring = thestring
+	if thestring == "ppc64le" {
+		thelinkarch = &ppc64.Linkppc64le
+	} else {
+		thelinkarch = &ppc64.Linkppc64
+	}
+	gc.Thearch.Thelinkarch = thelinkarch
+}
+
+var MAXWIDTH int64 = 1 << 50
+
+/*
+ * go declares several platform-specific type aliases:
+ * int, uint, float, and uintptr
+ */
+var typedefs = []gc.Typedef{
+	gc.Typedef{"int", gc.TINT, gc.TINT64},
+	gc.Typedef{"uint", gc.TUINT, gc.TUINT64},
+	gc.Typedef{"uintptr", gc.TUINTPTR, gc.TUINT64},
+}
+
+func betypeinit() {
+	gc.Widthptr = 8
+	gc.Widthint = 8
+	gc.Widthreg = 8
+
+}
+
+func main() {
+	gc.Thearch.Thechar = thechar
+	gc.Thearch.Thestring = thestring
+	gc.Thearch.Thelinkarch = thelinkarch
+	gc.Thearch.Typedefs = typedefs
+	gc.Thearch.REGSP = ppc64.REGSP
+	gc.Thearch.REGCTXT = ppc64.REGCTXT
+	gc.Thearch.MAXWIDTH = MAXWIDTH
+	gc.Thearch.Anyregalloc = anyregalloc
+	gc.Thearch.Betypeinit = betypeinit
+	gc.Thearch.Bgen = bgen
+	gc.Thearch.Cgen = cgen
+	gc.Thearch.Cgen_call = cgen_call
+	gc.Thearch.Cgen_callinter = cgen_callinter
+	gc.Thearch.Cgen_ret = cgen_ret
+	gc.Thearch.Clearfat = clearfat
+	gc.Thearch.Defframe = defframe
+	gc.Thearch.Excise = excise
+	gc.Thearch.Expandchecks = expandchecks
+	gc.Thearch.Gclean = gclean
+	gc.Thearch.Ginit = ginit
+	gc.Thearch.Gins = gins
+	gc.Thearch.Ginscall = ginscall
+	gc.Thearch.Igen = igen
+	gc.Thearch.Linkarchinit = linkarchinit
+	gc.Thearch.Peep = peep
+	gc.Thearch.Proginfo = proginfo
+	gc.Thearch.Regalloc = regalloc
+	gc.Thearch.Regfree = regfree
+	gc.Thearch.Regtyp = regtyp
+	gc.Thearch.Sameaddr = sameaddr
+	gc.Thearch.Smallindir = smallindir
+	gc.Thearch.Stackaddr = stackaddr
+	gc.Thearch.Excludedregs = excludedregs
+	gc.Thearch.RtoB = RtoB
+	gc.Thearch.FtoB = RtoB
+	gc.Thearch.BtoR = BtoR
+	gc.Thearch.BtoF = BtoF
+	gc.Thearch.Optoas = optoas
+	gc.Thearch.Doregbits = doregbits
+	gc.Thearch.Regnames = regnames
+
+	gc.Main()
+	gc.Exit(0)
+}

src/cmd/7g/gg.go

+// Copyright 2009 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+import "cmd/internal/obj/ppc64"
+import "cmd/internal/gc"
+
+// Copyright 2014 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+var reg [ppc64.NREG + ppc64.NFREG]uint8
+
+var panicdiv *gc.Node
+
+/*
+ * cgen.c
+ */
+
+/*
+ * list.c
+ */
+
+/*
+ * reg.c
+ */

src/cmd/7g/opt.go

+// Copyright 2014 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+// Many Power ISA arithmetic and logical instructions come in four
+// standard variants.  These bits let us map between variants.
+const (
+	V_CC = 1 << 0 // xCC (affect CR field 0 flags)
+	V_V  = 1 << 1 // xV (affect SO and OV flags)
+)

src/cmd/7g/reg.go

+// Derived from Inferno utils/6c/reg.c
+// http://code.google.com/p/inferno-os/source/browse/utils/6c/reg.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 main
+
+import "cmd/internal/obj/ppc64"
+import "cmd/internal/gc"
+
+const (
+	NREGVAR = 64 /* 32 general + 32 floating */
+)
+
+var regname = []string{
+	".R0",
+	".R1",
+	".R2",
+	".R3",
+	".R4",
+	".R5",
+	".R6",
+	".R7",
+	".R8",
+	".R9",
+	".R10",
+	".R11",
+	".R12",
+	".R13",
+	".R14",
+	".R15",
+	".R16",
+	".R17",
+	".R18",
+	".R19",
+	".R20",
+	".R21",
+	".R22",
+	".R23",
+	".R24",
+	".R25",
+	".R26",
+	".R27",
+	".R28",
+	".R29",
+	".R30",
+	".R31",
+	".F0",
+	".F1",
+	".F2",
+	".F3",
+	".F4",
+	".F5",
+	".F6",
+	".F7",
+	".F8",
+	".F9",
+	".F10",
+	".F11",
+	".F12",
+	".F13",
+	".F14",
+	".F15",
+	".F16",
+	".F17",
+	".F18",
+	".F19",
+	".F20",
+	".F21",
+	".F22",
+	".F23",
+	".F24",
+	".F25",
+	".F26",
+	".F27",
+	".F28",
+	".F29",
+	".F30",
+	".F31",
+}
+
+func regnames(n *int) []string {
+	*n = NREGVAR
+	return regname
+}
+
+func excludedregs() uint64 {
+	// Exclude registers with fixed functions
+	regbits := uint64(1<<0 | RtoB(ppc64.REGSP) | RtoB(ppc64.REGG) | RtoB(ppc64.REGTLS))
+
+	// Also exclude floating point registers with fixed constants
+	regbits |= RtoB(ppc64.REG_F27) | RtoB(ppc64.REG_F28) | RtoB(ppc64.REG_F29) | RtoB(ppc64.REG_F30) | RtoB(ppc64.REG_F31)
+
+	return regbits
+}
+
+func doregbits(r int) uint64 {
+	return 0
+}
+
+/*
+ * track register variables including external registers:
+ *	bit	reg
+ *	0	R0
+ *	1	R1
+ *	...	...
+ *	31	R31
+ *	32+0	F0
+ *	32+1	F1
+ *	...	...
+ *	32+31	F31
+ */
+func RtoB(r int) uint64 {
+	if r > ppc64.REG_R0 && r <= ppc64.REG_R31 {
+		return 1 << uint(r-ppc64.REG_R0)
+	}
+	if r >= ppc64.REG_F0 && r <= ppc64.REG_F31 {
+		return 1 << uint(32+r-ppc64.REG_F0)
+	}
+	return 0
+}
+
+func BtoR(b uint64) int {
+	b &= 0xffffffff
+	if b == 0 {
+		return 0
+	}
+	return gc.Bitno(b) + ppc64.REG_R0
+}
+
+func BtoF(b uint64) int {
+	b >>= 32
+	if b == 0 {
+		return 0
+	}
+	return gc.Bitno(b) + ppc64.REG_F0
+}

src/cmd/7g/util.go

+// Copyright 2015 The Go Authors.  All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package main
+
+func bool2int(b bool) int {
+	if b {
+		return 1
+	}
+	return 0
+}

src/cmd/7l/l.go

+// Inferno utils/5l/asm.c
+// http://code.google.com/p/inferno-os/source/browse/utils/5l/asm.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 main
+
+// Writing object files.
+
+// cmd/9l/l.h from Vita Nuova.
+//
+//	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 © 2000-2008 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 © 2000-2008 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.
+
+const (
+	thechar   = '9'
+	PtrSize   = 8
+	IntSize   = 8
+	RegSize   = 8
+	MaxAlign  = 32 // max data alignment
+	FuncAlign = 8
+	MINLC     = 4
+)
+
+/* Used by ../ld/dwarf.c */
+const (
+	DWARFREGSP = 1
+)

src/cmd/7l/obj.go

+// Inferno utils/5l/obj.c
+// http://code.google.com/p/inferno-os/source/browse/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 main
+
+import (
+	"cmd/internal/ld"
+	"cmd/internal/obj"
+	"fmt"
+	"log"
+)
+
+// Reading object files.
+
+func main() {
+	linkarchinit()
+	ld.Ldmain()
+}
+
+func linkarchinit() {
+	ld.Thestring = obj.Getgoarch()
+	if ld.Thestring == "ppc64le" {
+		ld.Thelinkarch = &ld.Linkppc64le
+	} else {
+		ld.Thelinkarch = &ld.Linkppc64
+	}
+
+	ld.Thearch.Thechar = thechar
+	ld.Thearch.Ptrsize = ld.Thelinkarch.Ptrsize
+	ld.Thearch.Intsize = ld.Thelinkarch.Ptrsize
+	ld.Thearch.Regsize = ld.Thelinkarch.Regsize
+	ld.Thearch.Funcalign = FuncAlign
+	ld.Thearch.Maxalign = MaxAlign
+	ld.Thearch.Minlc = MINLC
+	ld.Thearch.Dwarfregsp = DWARFREGSP
+
+	ld.Thearch.Adddynlib = adddynlib
+	ld.Thearch.Adddynrel = adddynrel
+	ld.Thearch.Adddynsym = adddynsym
+	ld.Thearch.Archinit = archinit
+	ld.Thearch.Archreloc = archreloc
+	ld.Thearch.Archrelocvariant = archrelocvariant
+	ld.Thearch.Asmb = asmb
+	ld.Thearch.Elfreloc1 = elfreloc1
+	ld.Thearch.Elfsetupplt = elfsetupplt
+	ld.Thearch.Gentext = gentext
+	ld.Thearch.Machoreloc1 = machoreloc1
+	if ld.Thelinkarch == &ld.Linkppc64le {
+		ld.Thearch.Lput = ld.Lputl
+		ld.Thearch.Wput = ld.Wputl
+		ld.Thearch.Vput = ld.Vputl
+	} else {
+		ld.Thearch.Lput = ld.Lputb
+		ld.Thearch.Wput = ld.Wputb
+		ld.Thearch.Vput = ld.Vputb
+	}
+
+	// TODO(austin): ABI v1 uses /usr/lib/ld.so.1
+	ld.Thearch.Linuxdynld = "/lib64/ld64.so.1"
+
+	ld.Thearch.Freebsddynld = "XXX"
+	ld.Thearch.Openbsddynld = "XXX"
+	ld.Thearch.Netbsddynld = "XXX"
+	ld.Thearch.Dragonflydynld = "XXX"
+	ld.Thearch.Solarisdynld = "XXX"
+}
+
+func archinit() {
+	// getgoextlinkenabled is based on GO_EXTLINK_ENABLED when
+	// Go was built; see ../../make.bash.
+	if ld.Linkmode == ld.LinkAuto && obj.Getgoextlinkenabled() == "0" {
+		ld.Linkmode = ld.LinkInternal
+	}
+
+	switch ld.HEADTYPE {
+	default:
+		if ld.Linkmode == ld.LinkAuto {
+			ld.Linkmode = ld.LinkInternal
+		}
+		if ld.Linkmode == ld.LinkExternal && obj.Getgoextlinkenabled() != "1" {
+			log.Fatalf("cannot use -linkmode=external with -H %s", ld.Headstr(int(ld.HEADTYPE)))
+		}
+	}
+
+	switch ld.HEADTYPE {
+	default:
+		ld.Diag("unknown -H option")
+		ld.Errorexit()
+		fallthrough
+
+	case ld.Hplan9: /* plan 9 */
+		ld.HEADR = 32
+
+		if ld.INITTEXT == -1 {
+			ld.INITTEXT = 4128
+		}
+		if ld.INITDAT == -1 {
+			ld.INITDAT = 0
+		}
+		if ld.INITRND == -1 {
+			ld.INITRND = 4096
+		}
+
+	case ld.Hlinux: /* ppc64 elf */
+		if ld.Thestring == "ppc64" {
+			ld.Debug['d'] = 1 // TODO(austin): ELF ABI v1 not supported yet
+		}
+		ld.Elfinit()
+		ld.HEADR = ld.ELFRESERVE
+		if ld.INITTEXT == -1 {
+			ld.INITTEXT = 0x10000 + int64(ld.HEADR)
+		}
+		if ld.INITDAT == -1 {
+			ld.INITDAT = 0
+		}
+		if ld.INITRND == -1 {
+			ld.INITRND = 0x10000
+		}
+
+	case ld.Hnacl:
+		ld.Elfinit()
+		ld.HEADR = 0x10000
+		ld.Funcalign = 16
+		if ld.INITTEXT == -1 {
+			ld.INITTEXT = 0x20000
+		}
+		if ld.INITDAT == -1 {
+			ld.INITDAT = 0
+		}
+		if ld.INITRND == -1 {
+			ld.INITRND = 0x10000
+		}
+	}
+
+	if ld.INITDAT != 0 && ld.INITRND != 0 {
+		fmt.Printf("warning: -D0x%x is ignored because of -R0x%x\n", uint64(ld.INITDAT), uint32(ld.INITRND))
+	}
+}

src/cmd/go/pkg.go

@@ -395,6 +395,8 @@ var goTools = map[string]targetDir{
 	"cmd/5l":                               toTool,
 	"cmd/6g":                               toTool,
 	"cmd/6l":                               toTool,
+	"cmd/7g":                               toTool,
+	"cmd/7l":                               toTool,
 	"cmd/8g":                               toTool,
 	"cmd/8l":                               toTool,
 	"cmd/9g":                               toTool,