diff --git a/src/cmd/8a/a.y b/src/cmd/8a/a.y
diff --git a/src/cmd/8a/doc.go b/src/cmd/8a/doc.go
diff --git a/src/cmd/8a/lex.c b/src/cmd/8a/lex.c
diff --git a/src/cmd/8a/lex.go b/src/cmd/8a/lex.go
diff --git a/src/cmd/8a/y.go b/src/cmd/8a/y.go
diff --git a/src/cmd/8a/y.tab.c b/src/cmd/8a/y.tab.c
diff --git a/src/cmd/8a/y.tab.h b/src/cmd/8a/y.tab.h
diff --git a/src/cmd/8g/Makefile b/src/cmd/8g/Makefile
diff --git a/src/cmd/8g/cgen.c b/src/cmd/8g/cgen.c
diff --git a/src/cmd/8g/cgen.go b/src/cmd/8g/cgen.go
diff --git a/src/cmd/8g/cgen64.c b/src/cmd/8g/cgen64.c
diff --git a/src/cmd/8g/cgen64.go b/src/cmd/8g/cgen64.go
diff --git a/src/cmd/8g/doc.go b/src/cmd/8g/doc.go
diff --git a/src/cmd/8g/galign.c b/src/cmd/8g/galign.c
diff --git a/src/cmd/8g/galign.go b/src/cmd/8g/galign.go
@@ -0,0 +1,85 @@
+// 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"
+	"cmd/internal/obj/i386"
+)
+import "cmd/internal/gc"
+
+var thechar int = '8'
+
+var thestring string = "386"
+
+var thelinkarch *obj.LinkArch = &i386.Link386
+
+func linkarchinit() {
+}
+
+var MAXWIDTH int64 = (1 << 32) - 1
+
+/*
+ * go declares several platform-specific type aliases:
+ * int, uint, float, and uintptr
+ */
+var typedefs = []gc.Typedef{
+	gc.Typedef{"int", gc.TINT, gc.TINT32},
+	gc.Typedef{"uint", gc.TUINT, gc.TUINT32},
+	gc.Typedef{"uintptr", gc.TUINTPTR, gc.TUINT32},
+}
+
+func betypeinit() {
+	gc.Widthptr = 4
+	gc.Widthint = 4
+	gc.Widthreg = 4
+
+}
+
+func main() {
+	gc.Thearch.Thechar = thechar
+	gc.Thearch.Thestring = thestring
+	gc.Thearch.Thelinkarch = thelinkarch
+	gc.Thearch.Typedefs = typedefs
+	gc.Thearch.REGSP = i386.REGSP
+	gc.Thearch.REGCTXT = i386.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 = FtoB
+	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)
+}
diff --git a/src/cmd/8g/gg.go b/src/cmd/8g/gg.go
@@ -0,0 +1,34 @@
+// 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/i386"
+import "cmd/internal/gc"
+
+// TODO(rsc):
+//	assume CLD?
+
+// 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.
+
+// foptoas flags
+const (
+	Frev  = 1 << 0
+	Fpop  = 1 << 1
+	Fpop2 = 1 << 2
+)
+
+var reg [i386.MAXREG]uint8
+
+var panicdiv *gc.Node
+
+/*
+ * cgen.c
+ */
+
+/*
+ * list.c
+ */
diff --git a/src/cmd/8g/gg.h b/src/cmd/8g/gg.h
diff --git a/src/cmd/8g/ggen.c b/src/cmd/8g/ggen.c
diff --git a/src/cmd/8g/ggen.go b/src/cmd/8g/ggen.go
diff --git a/src/cmd/8g/gsubr.c b/src/cmd/8g/gsubr.c
diff --git a/src/cmd/8g/gsubr.go b/src/cmd/8g/gsubr.go
diff --git a/src/cmd/8g/peep.c b/src/cmd/8g/peep.c
diff --git a/src/cmd/8g/peep.go b/src/cmd/8g/peep.go
diff --git a/src/cmd/8g/prog.c b/src/cmd/8g/prog.c
diff --git a/src/cmd/8g/prog.go b/src/cmd/8g/prog.go
diff --git a/src/cmd/8g/reg.c → src/cmd/8g/reg.go b/src/cmd/8g/reg.c → src/cmd/8g/reg.go
@@ -28,85 +28,83 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#include <u.h>
-#include <libc.h>
-#include "gg.h"
-#include "../gc/popt.h"
+package main
 
-enum {
-	NREGVAR = 16,	/* 8 integer + 8 floating */
-};
+import "cmd/internal/obj/i386"
+import "cmd/internal/gc"
 
-static char* regname[] = {
-	".ax", ".cx", ".dx", ".bx", ".sp", ".bp", ".si", ".di",
-	".x0", ".x1", ".x2", ".x3", ".x4", ".x5", ".x6", ".x7",
-};
+const (
+	NREGVAR = 16
+)
 
-char**
-regnames(int *n)
-{
-	*n = NREGVAR;
-	return regname;
+var regname = []string{
+	".ax",
+	".cx",
+	".dx",
+	".bx",
+	".sp",
+	".bp",
+	".si",
+	".di",
+	".x0",
+	".x1",
+	".x2",
+	".x3",
+	".x4",
+	".x5",
+	".x6",
+	".x7",
 }
 
-uint64
-excludedregs(void)
-{
-	return RtoB(REG_SP);
+func regnames(n *int) []string {
+	*n = NREGVAR
+	return regname
 }
 
-uint64
-doregbits(int r)
-{
-	uint64 b;
-
-	b = 0;
-	if(r >= REG_AX && r <= REG_DI)
-		b |= RtoB(r);
-	else
-	if(r >= REG_AL && r <= REG_BL)
-		b |= RtoB(r-REG_AL+REG_AX);
-	else
-	if(r >= REG_AH && r <= REG_BH)
-		b |= RtoB(r-REG_AH+REG_AX);
-	else
-	if(r >= REG_X0 && r <= REG_X0+7)
-		b |= FtoB(r);
-	return b;
+func excludedregs() uint64 {
+	return RtoB(i386.REG_SP)
 }
 
-uint64
-RtoB(int r)
-{
-
-	if(r < REG_AX || r > REG_DI)
-		return 0;
-	return 1ULL << (r-REG_AX);
+func doregbits(r int) uint64 {
+	b := uint64(0)
+	if r >= i386.REG_AX && r <= i386.REG_DI {
+		b |= RtoB(r)
+	} else if r >= i386.REG_AL && r <= i386.REG_BL {
+		b |= RtoB(r - i386.REG_AL + i386.REG_AX)
+	} else if r >= i386.REG_AH && r <= i386.REG_BH {
+		b |= RtoB(r - i386.REG_AH + i386.REG_AX)
+	} else if r >= i386.REG_X0 && r <= i386.REG_X0+7 {
+		b |= FtoB(r)
+	}
+	return b
 }
 
-int
-BtoR(uint64 b)
-{
+func RtoB(r int) uint64 {
+	if r < i386.REG_AX || r > i386.REG_DI {
+		return 0
+	}
+	return 1 << uint(r-i386.REG_AX)
+}
 
-	b &= 0xffL;
-	if(b == 0)
-		return 0;
-	return bitno(b) + REG_AX;
+func BtoR(b uint64) int {
+	b &= 0xff
+	if b == 0 {
+		return 0
+	}
+	return gc.Bitno(b) + i386.REG_AX
 }
 
-uint64
-FtoB(int f)
-{
-	if(f < REG_X0 || f > REG_X7)
-		return 0;
-	return 1ULL << (f - REG_X0 + 8);
+func FtoB(f int) uint64 {
+	if f < i386.REG_X0 || f > i386.REG_X7 {
+		return 0
+	}
+	return 1 << uint(f-i386.REG_X0+8)
 }
 
-int
-BtoF(uint64 b)
-{
-	b &= 0xFF00L;
-	if(b == 0)
-		return 0;
-	return bitno(b) - 8 + REG_X0;
+func BtoF(b uint64) int {
+	b &= 0xFF00
+	if b == 0 {
+		return 0
+	}
+	return gc.Bitno(b) - 8 + i386.REG_X0
 }
diff --git a/src/cmd/8g/util.go b/src/cmd/8g/util.go
@@ -0,0 +1,12 @@
+// 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
+}
diff --git a/src/cmd/9a/Makefile b/src/cmd/9a/Makefile
diff --git a/src/cmd/9a/a.h b/src/cmd/9a/a.h
diff --git a/src/cmd/9a/a.y b/src/cmd/9a/a.y
diff --git a/src/cmd/9a/doc.go b/src/cmd/9a/doc.go
diff --git a/src/cmd/9a/lex.c b/src/cmd/9a/lex.c
diff --git a/src/cmd/9a/lex.go b/src/cmd/9a/lex.go
diff --git a/src/cmd/9a/y.go b/src/cmd/9a/y.go
diff --git a/src/cmd/9a/y.tab.c b/src/cmd/9a/y.tab.c
diff --git a/src/cmd/9a/y.tab.h b/src/cmd/9a/y.tab.h
diff --git a/src/cmd/9g/cgen.c b/src/cmd/9g/cgen.c
diff --git a/src/cmd/9g/cgen.go b/src/cmd/9g/cgen.go
diff --git a/src/cmd/9g/doc.go b/src/cmd/9g/doc.go
diff --git a/src/cmd/9g/galign.c b/src/cmd/9g/galign.c
diff --git a/src/cmd/9g/galign.go b/src/cmd/9g/galign.go
@@ -0,0 +1,93 @@
+// 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"
+	"cmd/internal/obj/ppc64"
+)
+import "cmd/internal/gc"
+
+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)
+}
diff --git a/src/cmd/9g/gg.go b/src/cmd/9g/gg.go
@@ -0,0 +1,28 @@
+// 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
+ */
diff --git a/src/cmd/9g/gg.h b/src/cmd/9g/gg.h
diff --git a/src/cmd/9g/ggen.c b/src/cmd/9g/ggen.c
diff --git a/src/cmd/9g/ggen.go b/src/cmd/9g/ggen.go
diff --git a/src/cmd/9g/gsubr.c b/src/cmd/9g/gsubr.c
diff --git a/src/cmd/9g/gsubr.go b/src/cmd/9g/gsubr.go
diff --git a/src/cmd/9g/opt.go b/src/cmd/9g/opt.go
@@ -0,0 +1,42 @@
+// Derived from Inferno utils/6c/peep.c
+// http://code.google.com/p/inferno-os/source/browse/utils/6c/peep.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
+
+// 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.
+
+// Many Power ISA arithmetic and logical instructions come in four
+// standard variants.  These bits let us map between variants.
+const (
+	V_CC = 1 << 0
+	V_V  = 1 << 1
+)
diff --git a/src/cmd/9g/opt.h b/src/cmd/9g/opt.h
diff --git a/src/cmd/9g/peep.c b/src/cmd/9g/peep.c
diff --git a/src/cmd/9g/peep.go b/src/cmd/9g/peep.go
diff --git a/src/cmd/9g/prog.c b/src/cmd/9g/prog.c
diff --git a/src/cmd/9g/prog.go b/src/cmd/9g/prog.go
@@ -0,0 +1,314 @@
+// 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
+
+import (
+	"cmd/internal/obj"
+	"cmd/internal/obj/ppc64"
+)
+import "cmd/internal/gc"
+
+const (
+	LeftRdwr  uint32 = gc.LeftRead | gc.LeftWrite
+	RightRdwr uint32 = gc.RightRead | gc.RightWrite
+)
+
+// This table gives the basic information about instruction
+// generated by the compiler and processed in the optimizer.
+// See opt.h for bit definitions.
+//
+// Instructions not generated need not be listed.
+// As an exception to that rule, we typically write down all the
+// size variants of an operation even if we just use a subset.
+//
+// The table is formatted for 8-space tabs.
+var progtable = [ppc64.ALAST]gc.ProgInfo{
+	obj.ATYPE:     gc.ProgInfo{gc.Pseudo | gc.Skip, 0, 0, 0},
+	obj.ATEXT:     gc.ProgInfo{gc.Pseudo, 0, 0, 0},
+	obj.AFUNCDATA: gc.ProgInfo{gc.Pseudo, 0, 0, 0},
+	obj.APCDATA:   gc.ProgInfo{gc.Pseudo, 0, 0, 0},
+	obj.AUNDEF:    gc.ProgInfo{gc.Break, 0, 0, 0},
+	obj.AUSEFIELD: gc.ProgInfo{gc.OK, 0, 0, 0},
+	obj.ACHECKNIL: gc.ProgInfo{gc.LeftRead, 0, 0, 0},
+	obj.AVARDEF:   gc.ProgInfo{gc.Pseudo | gc.RightWrite, 0, 0, 0},
+	obj.AVARKILL:  gc.ProgInfo{gc.Pseudo | gc.RightWrite, 0, 0, 0},
+
+	// NOP is an internal no-op that also stands
+	// for USED and SET annotations, not the Power opcode.
+	obj.ANOP: gc.ProgInfo{gc.LeftRead | gc.RightWrite, 0, 0, 0},
+
+	// Integer
+	ppc64.AADD:    gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.ASUB:    gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.ANEG:    gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AAND:    gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AOR:     gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AXOR:    gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AMULLD:  gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AMULLW:  gc.ProgInfo{gc.SizeL | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AMULHD:  gc.ProgInfo{gc.SizeL | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AMULHDU: gc.ProgInfo{gc.SizeL | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.ADIVD:   gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.ADIVDU:  gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.ASLD:    gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.ASRD:    gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.ASRAD:   gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.ACMP:    gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RightRead, 0, 0, 0},
+	ppc64.ACMPU:   gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RightRead, 0, 0, 0},
+	ppc64.ATD:     gc.ProgInfo{gc.SizeQ | gc.RightRead, 0, 0, 0},
+
+	// Floating point.
+	ppc64.AFADD:   gc.ProgInfo{gc.SizeD | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AFADDS:  gc.ProgInfo{gc.SizeF | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AFSUB:   gc.ProgInfo{gc.SizeD | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AFSUBS:  gc.ProgInfo{gc.SizeF | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AFMUL:   gc.ProgInfo{gc.SizeD | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AFMULS:  gc.ProgInfo{gc.SizeF | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AFDIV:   gc.ProgInfo{gc.SizeD | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AFDIVS:  gc.ProgInfo{gc.SizeF | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AFCTIDZ: gc.ProgInfo{gc.SizeF | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AFCFID:  gc.ProgInfo{gc.SizeF | gc.LeftRead | gc.RegRead | gc.RightWrite, 0, 0, 0},
+	ppc64.AFCMPU:  gc.ProgInfo{gc.SizeD | gc.LeftRead | gc.RightRead, 0, 0, 0},
+	ppc64.AFRSP:   gc.ProgInfo{gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Conv, 0, 0, 0},
+
+	// Moves
+	ppc64.AMOVB:  gc.ProgInfo{gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv, 0, 0, 0},
+	ppc64.AMOVBU: gc.ProgInfo{gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv | gc.PostInc, 0, 0, 0},
+	ppc64.AMOVBZ: gc.ProgInfo{gc.SizeB | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv, 0, 0, 0},
+	ppc64.AMOVH:  gc.ProgInfo{gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv, 0, 0, 0},
+	ppc64.AMOVHU: gc.ProgInfo{gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv | gc.PostInc, 0, 0, 0},
+	ppc64.AMOVHZ: gc.ProgInfo{gc.SizeW | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv, 0, 0, 0},
+	ppc64.AMOVW:  gc.ProgInfo{gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv, 0, 0, 0},
+
+	// there is no AMOVWU.
+	ppc64.AMOVWZU: gc.ProgInfo{gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv | gc.PostInc, 0, 0, 0},
+	ppc64.AMOVWZ:  gc.ProgInfo{gc.SizeL | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv, 0, 0, 0},
+	ppc64.AMOVD:   gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Move, 0, 0, 0},
+	ppc64.AMOVDU:  gc.ProgInfo{gc.SizeQ | gc.LeftRead | gc.RightWrite | gc.Move | gc.PostInc, 0, 0, 0},
+	ppc64.AFMOVS:  gc.ProgInfo{gc.SizeF | gc.LeftRead | gc.RightWrite | gc.Move | gc.Conv, 0, 0, 0},
+	ppc64.AFMOVD:  gc.ProgInfo{gc.SizeD | gc.LeftRead | gc.RightWrite | gc.Move, 0, 0, 0},
+
+	// Jumps
+	ppc64.ABR:     gc.ProgInfo{gc.Jump | gc.Break, 0, 0, 0},
+	ppc64.ABL:     gc.ProgInfo{gc.Call, 0, 0, 0},
+	ppc64.ABEQ:    gc.ProgInfo{gc.Cjmp, 0, 0, 0},
+	ppc64.ABNE:    gc.ProgInfo{gc.Cjmp, 0, 0, 0},
+	ppc64.ABGE:    gc.ProgInfo{gc.Cjmp, 0, 0, 0},
+	ppc64.ABLT:    gc.ProgInfo{gc.Cjmp, 0, 0, 0},
+	ppc64.ABGT:    gc.ProgInfo{gc.Cjmp, 0, 0, 0},
+	ppc64.ABLE:    gc.ProgInfo{gc.Cjmp, 0, 0, 0},
+	ppc64.ARETURN: gc.ProgInfo{gc.Break, 0, 0, 0},
+	obj.ADUFFZERO: gc.ProgInfo{gc.Call, 0, 0, 0},
+	obj.ADUFFCOPY: gc.ProgInfo{gc.Call, 0, 0, 0},
+}
+
+var initproginfo_initialized int
+
+func initproginfo() {
+	var addvariant = []int{V_CC, V_V, V_CC | V_V}
+
+	if initproginfo_initialized != 0 {
+		return
+	}
+	initproginfo_initialized = 1
+
+	// Perform one-time expansion of instructions in progtable to
+	// their CC, V, and VCC variants
+	var as2 int
+	var i int
+	var variant int
+	for as := int(0); as < len(progtable); as++ {
+		if progtable[as].Flags == 0 {
+			continue
+		}
+		variant = as2variant(as)
+		for i = 0; i < len(addvariant); i++ {
+			as2 = variant2as(as, variant|addvariant[i])
+			if as2 != 0 && progtable[as2].Flags == 0 {
+				progtable[as2] = progtable[as]
+			}
+		}
+	}
+}
+
+func proginfo(info *gc.ProgInfo, p *obj.Prog) {
+	initproginfo()
+
+	*info = progtable[p.As]
+	if info.Flags == 0 {
+		*info = progtable[ppc64.AADD]
+		gc.Fatal("proginfo: unknown instruction %v", p)
+	}
+
+	if (info.Flags&gc.RegRead != 0) && p.Reg == 0 {
+		info.Flags &^= gc.RegRead
+		info.Flags |= gc.RightRead /*CanRegRead |*/
+	}
+
+	if (p.From.Type == obj.TYPE_MEM || p.From.Type == obj.TYPE_ADDR) && p.From.Reg != 0 {
+		info.Regindex |= RtoB(int(p.From.Reg))
+		if info.Flags&gc.PostInc != 0 {
+			info.Regset |= RtoB(int(p.From.Reg))
+		}
+	}
+
+	if (p.To.Type == obj.TYPE_MEM || p.To.Type == obj.TYPE_ADDR) && p.To.Reg != 0 {
+		info.Regindex |= RtoB(int(p.To.Reg))
+		if info.Flags&gc.PostInc != 0 {
+			info.Regset |= RtoB(int(p.To.Reg))
+		}
+	}
+
+	if p.From.Type == obj.TYPE_ADDR && p.From.Sym != nil && (info.Flags&gc.LeftRead != 0) {
+		info.Flags &^= gc.LeftRead
+		info.Flags |= gc.LeftAddr
+	}
+
+	if p.As == obj.ADUFFZERO {
+		info.Reguse |= 1<<0 | RtoB(ppc64.REG_R3)
+		info.Regset |= RtoB(ppc64.REG_R3)
+	}
+
+	if p.As == obj.ADUFFCOPY {
+		// TODO(austin) Revisit when duffcopy is implemented
+		info.Reguse |= RtoB(ppc64.REG_R3) | RtoB(ppc64.REG_R4) | RtoB(ppc64.REG_R5)
+
+		info.Regset |= RtoB(ppc64.REG_R3) | RtoB(ppc64.REG_R4)
+	}
+}
+
+// Instruction variants table.  Initially this contains entries only
+// for the "base" form of each instruction.  On the first call to
+// as2variant or variant2as, we'll add the variants to the table.
+var varianttable = [ppc64.ALAST][4]int{
+	ppc64.AADD:     [4]int{ppc64.AADD, ppc64.AADDCC, ppc64.AADDV, ppc64.AADDVCC},
+	ppc64.AADDC:    [4]int{ppc64.AADDC, ppc64.AADDCCC, ppc64.AADDCV, ppc64.AADDCVCC},
+	ppc64.AADDE:    [4]int{ppc64.AADDE, ppc64.AADDECC, ppc64.AADDEV, ppc64.AADDEVCC},
+	ppc64.AADDME:   [4]int{ppc64.AADDME, ppc64.AADDMECC, ppc64.AADDMEV, ppc64.AADDMEVCC},
+	ppc64.AADDZE:   [4]int{ppc64.AADDZE, ppc64.AADDZECC, ppc64.AADDZEV, ppc64.AADDZEVCC},
+	ppc64.AAND:     [4]int{ppc64.AAND, ppc64.AANDCC, 0, 0},
+	ppc64.AANDN:    [4]int{ppc64.AANDN, ppc64.AANDNCC, 0, 0},
+	ppc64.ACNTLZD:  [4]int{ppc64.ACNTLZD, ppc64.ACNTLZDCC, 0, 0},
+	ppc64.ACNTLZW:  [4]int{ppc64.ACNTLZW, ppc64.ACNTLZWCC, 0, 0},
+	ppc64.ADIVD:    [4]int{ppc64.ADIVD, ppc64.ADIVDCC, ppc64.ADIVDV, ppc64.ADIVDVCC},
+	ppc64.ADIVDU:   [4]int{ppc64.ADIVDU, ppc64.ADIVDUCC, ppc64.ADIVDUV, ppc64.ADIVDUVCC},
+	ppc64.ADIVW:    [4]int{ppc64.ADIVW, ppc64.ADIVWCC, ppc64.ADIVWV, ppc64.ADIVWVCC},
+	ppc64.ADIVWU:   [4]int{ppc64.ADIVWU, ppc64.ADIVWUCC, ppc64.ADIVWUV, ppc64.ADIVWUVCC},
+	ppc64.AEQV:     [4]int{ppc64.AEQV, ppc64.AEQVCC, 0, 0},
+	ppc64.AEXTSB:   [4]int{ppc64.AEXTSB, ppc64.AEXTSBCC, 0, 0},
+	ppc64.AEXTSH:   [4]int{ppc64.AEXTSH, ppc64.AEXTSHCC, 0, 0},
+	ppc64.AEXTSW:   [4]int{ppc64.AEXTSW, ppc64.AEXTSWCC, 0, 0},
+	ppc64.AFABS:    [4]int{ppc64.AFABS, ppc64.AFABSCC, 0, 0},
+	ppc64.AFADD:    [4]int{ppc64.AFADD, ppc64.AFADDCC, 0, 0},
+	ppc64.AFADDS:   [4]int{ppc64.AFADDS, ppc64.AFADDSCC, 0, 0},
+	ppc64.AFCFID:   [4]int{ppc64.AFCFID, ppc64.AFCFIDCC, 0, 0},
+	ppc64.AFCTID:   [4]int{ppc64.AFCTID, ppc64.AFCTIDCC, 0, 0},
+	ppc64.AFCTIDZ:  [4]int{ppc64.AFCTIDZ, ppc64.AFCTIDZCC, 0, 0},
+	ppc64.AFCTIW:   [4]int{ppc64.AFCTIW, ppc64.AFCTIWCC, 0, 0},
+	ppc64.AFCTIWZ:  [4]int{ppc64.AFCTIWZ, ppc64.AFCTIWZCC, 0, 0},
+	ppc64.AFDIV:    [4]int{ppc64.AFDIV, ppc64.AFDIVCC, 0, 0},
+	ppc64.AFDIVS:   [4]int{ppc64.AFDIVS, ppc64.AFDIVSCC, 0, 0},
+	ppc64.AFMADD:   [4]int{ppc64.AFMADD, ppc64.AFMADDCC, 0, 0},
+	ppc64.AFMADDS:  [4]int{ppc64.AFMADDS, ppc64.AFMADDSCC, 0, 0},
+	ppc64.AFMOVD:   [4]int{ppc64.AFMOVD, ppc64.AFMOVDCC, 0, 0},
+	ppc64.AFMSUB:   [4]int{ppc64.AFMSUB, ppc64.AFMSUBCC, 0, 0},
+	ppc64.AFMSUBS:  [4]int{ppc64.AFMSUBS, ppc64.AFMSUBSCC, 0, 0},
+	ppc64.AFMUL:    [4]int{ppc64.AFMUL, ppc64.AFMULCC, 0, 0},
+	ppc64.AFMULS:   [4]int{ppc64.AFMULS, ppc64.AFMULSCC, 0, 0},
+	ppc64.AFNABS:   [4]int{ppc64.AFNABS, ppc64.AFNABSCC, 0, 0},
+	ppc64.AFNEG:    [4]int{ppc64.AFNEG, ppc64.AFNEGCC, 0, 0},
+	ppc64.AFNMADD:  [4]int{ppc64.AFNMADD, ppc64.AFNMADDCC, 0, 0},
+	ppc64.AFNMADDS: [4]int{ppc64.AFNMADDS, ppc64.AFNMADDSCC, 0, 0},
+	ppc64.AFNMSUB:  [4]int{ppc64.AFNMSUB, ppc64.AFNMSUBCC, 0, 0},
+	ppc64.AFNMSUBS: [4]int{ppc64.AFNMSUBS, ppc64.AFNMSUBSCC, 0, 0},
+	ppc64.AFRES:    [4]int{ppc64.AFRES, ppc64.AFRESCC, 0, 0},
+	ppc64.AFRSP:    [4]int{ppc64.AFRSP, ppc64.AFRSPCC, 0, 0},
+	ppc64.AFRSQRTE: [4]int{ppc64.AFRSQRTE, ppc64.AFRSQRTECC, 0, 0},
+	ppc64.AFSEL:    [4]int{ppc64.AFSEL, ppc64.AFSELCC, 0, 0},
+	ppc64.AFSQRT:   [4]int{ppc64.AFSQRT, ppc64.AFSQRTCC, 0, 0},
+	ppc64.AFSQRTS:  [4]int{ppc64.AFSQRTS, ppc64.AFSQRTSCC, 0, 0},
+	ppc64.AFSUB:    [4]int{ppc64.AFSUB, ppc64.AFSUBCC, 0, 0},
+	ppc64.AFSUBS:   [4]int{ppc64.AFSUBS, ppc64.AFSUBSCC, 0, 0},
+	ppc64.AMTFSB0:  [4]int{ppc64.AMTFSB0, ppc64.AMTFSB0CC, 0, 0},
+	ppc64.AMTFSB1:  [4]int{ppc64.AMTFSB1, ppc64.AMTFSB1CC, 0, 0},
+	ppc64.AMULHD:   [4]int{ppc64.AMULHD, ppc64.AMULHDCC, 0, 0},
+	ppc64.AMULHDU:  [4]int{ppc64.AMULHDU, ppc64.AMULHDUCC, 0, 0},
+	ppc64.AMULHW:   [4]int{ppc64.AMULHW, ppc64.AMULHWCC, 0, 0},
+	ppc64.AMULHWU:  [4]int{ppc64.AMULHWU, ppc64.AMULHWUCC, 0, 0},
+	ppc64.AMULLD:   [4]int{ppc64.AMULLD, ppc64.AMULLDCC, ppc64.AMULLDV, ppc64.AMULLDVCC},
+	ppc64.AMULLW:   [4]int{ppc64.AMULLW, ppc64.AMULLWCC, ppc64.AMULLWV, ppc64.AMULLWVCC},
+	ppc64.ANAND:    [4]int{ppc64.ANAND, ppc64.ANANDCC, 0, 0},
+	ppc64.ANEG:     [4]int{ppc64.ANEG, ppc64.ANEGCC, ppc64.ANEGV, ppc64.ANEGVCC},
+	ppc64.ANOR:     [4]int{ppc64.ANOR, ppc64.ANORCC, 0, 0},
+	ppc64.AOR:      [4]int{ppc64.AOR, ppc64.AORCC, 0, 0},
+	ppc64.AORN:     [4]int{ppc64.AORN, ppc64.AORNCC, 0, 0},
+	ppc64.AREM:     [4]int{ppc64.AREM, ppc64.AREMCC, ppc64.AREMV, ppc64.AREMVCC},
+	ppc64.AREMD:    [4]int{ppc64.AREMD, ppc64.AREMDCC, ppc64.AREMDV, ppc64.AREMDVCC},
+	ppc64.AREMDU:   [4]int{ppc64.AREMDU, ppc64.AREMDUCC, ppc64.AREMDUV, ppc64.AREMDUVCC},
+	ppc64.AREMU:    [4]int{ppc64.AREMU, ppc64.AREMUCC, ppc64.AREMUV, ppc64.AREMUVCC},
+	ppc64.ARLDC:    [4]int{ppc64.ARLDC, ppc64.ARLDCCC, 0, 0},
+	ppc64.ARLDCL:   [4]int{ppc64.ARLDCL, ppc64.ARLDCLCC, 0, 0},
+	ppc64.ARLDCR:   [4]int{ppc64.ARLDCR, ppc64.ARLDCRCC, 0, 0},
+	ppc64.ARLDMI:   [4]int{ppc64.ARLDMI, ppc64.ARLDMICC, 0, 0},
+	ppc64.ARLWMI:   [4]int{ppc64.ARLWMI, ppc64.ARLWMICC, 0, 0},
+	ppc64.ARLWNM:   [4]int{ppc64.ARLWNM, ppc64.ARLWNMCC, 0, 0},
+	ppc64.ASLD:     [4]int{ppc64.ASLD, ppc64.ASLDCC, 0, 0},
+	ppc64.ASLW:     [4]int{ppc64.ASLW, ppc64.ASLWCC, 0, 0},
+	ppc64.ASRAD:    [4]int{ppc64.ASRAD, ppc64.ASRADCC, 0, 0},
+	ppc64.ASRAW:    [4]int{ppc64.ASRAW, ppc64.ASRAWCC, 0, 0},
+	ppc64.ASRD:     [4]int{ppc64.ASRD, ppc64.ASRDCC, 0, 0},
+	ppc64.ASRW:     [4]int{ppc64.ASRW, ppc64.ASRWCC, 0, 0},
+	ppc64.ASUB:     [4]int{ppc64.ASUB, ppc64.ASUBCC, ppc64.ASUBV, ppc64.ASUBVCC},
+	ppc64.ASUBC:    [4]int{ppc64.ASUBC, ppc64.ASUBCCC, ppc64.ASUBCV, ppc64.ASUBCVCC},
+	ppc64.ASUBE:    [4]int{ppc64.ASUBE, ppc64.ASUBECC, ppc64.ASUBEV, ppc64.ASUBEVCC},
+	ppc64.ASUBME:   [4]int{ppc64.ASUBME, ppc64.ASUBMECC, ppc64.ASUBMEV, ppc64.ASUBMEVCC},
+	ppc64.ASUBZE:   [4]int{ppc64.ASUBZE, ppc64.ASUBZECC, ppc64.ASUBZEV, ppc64.ASUBZEVCC},
+	ppc64.AXOR:     [4]int{ppc64.AXOR, ppc64.AXORCC, 0, 0},
+}
+
+var initvariants_initialized int
+
+func initvariants() {
+	if initvariants_initialized != 0 {
+		return
+	}
+	initvariants_initialized = 1
+
+	var j int
+	for i := int(0); i < len(varianttable); i++ {
+		if varianttable[i][0] == 0 {
+			// Instruction has no variants
+			varianttable[i][0] = i
+
+			continue
+		}
+
+		// Copy base form to other variants
+		if varianttable[i][0] == i {
+			for j = 0; j < len(varianttable[i]); j++ {
+				varianttable[varianttable[i][j]] = varianttable[i]
+			}
+		}
+	}
+}
+
+// as2variant returns the variant (V_*) flags of instruction as.
+func as2variant(as int) int {
+	initvariants()
+	for i := int(0); i < len(varianttable[as]); i++ {
+		if varianttable[as][i] == as {
+			return i
+		}
+	}
+	gc.Fatal("as2variant: instruction %v is not a variant of itself", ppc64.Aconv(as))
+	return 0
+}
+
+// variant2as returns the instruction as with the given variant (V_*) flags.
+// If no such variant exists, this returns 0.
+func variant2as(as int, flags int) int {
+	initvariants()
+	return varianttable[as][flags]
+}
diff --git a/src/cmd/9g/reg.c → src/cmd/9g/reg.go b/src/cmd/9g/reg.c → src/cmd/9g/reg.go
@@ -28,17 +28,16 @@
 // OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 // THE SOFTWARE.
 
-#include <u.h>
-#include <libc.h>
-#include "gg.h"
-#include "../gc/popt.h"
+package main
 
-enum {
-	NREGVAR = 64,	/* 32 general + 32 floating */
-};
+import "cmd/internal/obj/ppc64"
+import "cmd/internal/gc"
 
+const (
+	NREGVAR = 64
+)
 
-static char* regname[] = {
+var regname = []string{
 	".R0",
 	".R1",
 	".R2",
@@ -103,32 +102,25 @@ static char* regname[] = {
 	".F29",
 	".F30",
 	".F31",
-};
-
-char**
-regnames(int *n)
-{
-	*n = NREGVAR;
-	return regname;
 }
 
-uint64
-excludedregs(void)
-{
-	uint64 regbits;
+func regnames(n *int) []string {
+	*n = NREGVAR
+	return regname
+}
 
+func excludedregs() uint64 {
 	// Exclude registers with fixed functions
-	regbits = (1<<0)|RtoB(REGSP)|RtoB(REGG)|RtoB(REGTLS);
+	regbits := uint64(1<<0 | RtoB(ppc64.REGSP) | RtoB(ppc64.REGG) | RtoB(ppc64.REGTLS))
+
 	// Also exclude floating point registers with fixed constants
-	regbits |= RtoB(REG_F27)|RtoB(REG_F28)|RtoB(REG_F29)|RtoB(REG_F30)|RtoB(REG_F31);
-	return regbits;
+	regbits |= RtoB(ppc64.REG_F27) | RtoB(ppc64.REG_F28) | RtoB(ppc64.REG_F29) | RtoB(ppc64.REG_F30) | RtoB(ppc64.REG_F31)
+
+	return regbits
 }
 
-uint64
-doregbits(int r)
-{
-	USED(r);
-	return 0;
+func doregbits(r int) uint64 {
+	return 0
 }
 
 /*
@@ -143,30 +135,28 @@ doregbits(int r)
  *	...	...
  *	32+31	F31
  */
-uint64
-RtoB(int r)
-{
-	if(r > REG_R0 && r <= REG_R31)
-		return 1ULL << (r - REG_R0);
-	if(r >= REG_F0 && r <= REG_F31)
-		return 1ULL << (32 + r - REG_F0);
-	return 0;
+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
 }
 
-int
-BtoR(uint64 b)
-{
-	b &= 0xffffffffull;
-	if(b == 0)
-		return 0;
-	return bitno(b) + REG_R0;
+func BtoR(b uint64) int {
+	b &= 0xffffffff
+	if b == 0 {
+		return 0
+	}
+	return gc.Bitno(b) + ppc64.REG_R0
 }
 
-int
-BtoF(uint64 b)
-{
-	b >>= 32;
-	if(b == 0)
-		return 0;
-	return bitno(b) + REG_F0;
+func BtoF(b uint64) int {
+	b >>= 32
+	if b == 0 {
+		return 0
+	}
+	return gc.Bitno(b) + ppc64.REG_F0
 }
diff --git a/src/cmd/9g/util.go b/src/cmd/9g/util.go
@@ -0,0 +1,12 @@
+// 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
+}