From: Rob Pike <r@golang.org>
Date: Wed, 11 Mar 2015 19:48:42 +0000 (-0700)
Subject: cmd/internal/obj/*: go generate the slice of Anames strings
X-Git-Tag: go1.5beta1~1630
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=4b981ed3e66a3093089b5b333bd7f1d85a92aaf3;p=gostls13.git

cmd/internal/obj/*: go generate the slice of Anames strings

Add cmd/internal/obj/stringer.go to do the generation and update
the architecture packages to use it to maintain the Anames tables.

Change-Id: I9c6d4def1bf21624668396d70c17973d0db11fbc
Reviewed-on: https://go-review.googlesource.com/7430
Reviewed-by: Russ Cox <rsc@golang.org>
---

diff --git a/src/cmd/internal/obj/arm/5.out.go b/src/cmd/internal/obj/arm/5.out.go
index d187367e46..1cb561d4b2 100644
--- a/src/cmd/internal/obj/arm/5.out.go
+++ b/src/cmd/internal/obj/arm/5.out.go
@@ -32,6 +32,8 @@ package arm
 
 import "cmd/internal/obj"
 
+//go:generate go run ../stringer.go -i $GOFILE -o anames.go -p arm
+
 const (
 	NSNAME = 8
 	NSYM   = 50
diff --git a/src/cmd/internal/obj/arm/anames.go b/src/cmd/internal/obj/arm/anames.go
new file mode 100644
index 0000000000..0a028c03ca
--- /dev/null
+++ b/src/cmd/internal/obj/arm/anames.go
@@ -0,0 +1,108 @@
+// Generated by stringer -i 5.out.go -o anames.go -p arm
+// Do not edit.
+
+package arm
+
+import "cmd/internal/obj"
+
+var Anames = []string{
+	obj.A_ARCHSPECIFIC: "AND",
+	"EOR",
+	"SUB",
+	"RSB",
+	"ADD",
+	"ADC",
+	"SBC",
+	"RSC",
+	"TST",
+	"TEQ",
+	"CMP",
+	"CMN",
+	"ORR",
+	"BIC",
+	"MVN",
+	"BEQ",
+	"BNE",
+	"BCS",
+	"BHS",
+	"BCC",
+	"BLO",
+	"BMI",
+	"BPL",
+	"BVS",
+	"BVC",
+	"BHI",
+	"BLS",
+	"BGE",
+	"BLT",
+	"BGT",
+	"BLE",
+	"MOVWD",
+	"MOVWF",
+	"MOVDW",
+	"MOVFW",
+	"MOVFD",
+	"MOVDF",
+	"MOVF",
+	"MOVD",
+	"CMPF",
+	"CMPD",
+	"ADDF",
+	"ADDD",
+	"SUBF",
+	"SUBD",
+	"MULF",
+	"MULD",
+	"DIVF",
+	"DIVD",
+	"SQRTF",
+	"SQRTD",
+	"ABSF",
+	"ABSD",
+	"SRL",
+	"SRA",
+	"SLL",
+	"MULU",
+	"DIVU",
+	"MUL",
+	"DIV",
+	"MOD",
+	"MODU",
+	"MOVB",
+	"MOVBS",
+	"MOVBU",
+	"MOVH",
+	"MOVHS",
+	"MOVHU",
+	"MOVW",
+	"MOVM",
+	"SWPBU",
+	"SWPW",
+	"RFE",
+	"SWI",
+	"MULA",
+	"WORD",
+	"BCASE",
+	"CASE",
+	"MULL",
+	"MULAL",
+	"MULLU",
+	"MULALU",
+	"BX",
+	"BXRET",
+	"DWORD",
+	"LDREX",
+	"STREX",
+	"LDREXD",
+	"STREXD",
+	"PLD",
+	"CLZ",
+	"MULWT",
+	"MULWB",
+	"MULAWT",
+	"MULAWB",
+	"DATABUNDLE",
+	"DATABUNDLEEND",
+	"MRC",
+	"LAST",
+}
diff --git a/src/cmd/internal/obj/arm/anames5.go b/src/cmd/internal/obj/arm/anames5.go
index 9f50df3239..2e3a1f92dd 100644
--- a/src/cmd/internal/obj/arm/anames5.go
+++ b/src/cmd/internal/obj/arm/anames5.go
@@ -1,108 +1,8 @@
-package arm
-
-import "cmd/internal/obj"
+// 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.
 
-var Anames = []string{
-	obj.A_ARCHSPECIFIC: "AND",
-	"EOR",
-	"SUB",
-	"RSB",
-	"ADD",
-	"ADC",
-	"SBC",
-	"RSC",
-	"TST",
-	"TEQ",
-	"CMP",
-	"CMN",
-	"ORR",
-	"BIC",
-	"MVN",
-	"BEQ",
-	"BNE",
-	"BCS",
-	"BHS",
-	"BCC",
-	"BLO",
-	"BMI",
-	"BPL",
-	"BVS",
-	"BVC",
-	"BHI",
-	"BLS",
-	"BGE",
-	"BLT",
-	"BGT",
-	"BLE",
-	"MOVWD",
-	"MOVWF",
-	"MOVDW",
-	"MOVFW",
-	"MOVFD",
-	"MOVDF",
-	"MOVF",
-	"MOVD",
-	"CMPF",
-	"CMPD",
-	"ADDF",
-	"ADDD",
-	"SUBF",
-	"SUBD",
-	"MULF",
-	"MULD",
-	"DIVF",
-	"DIVD",
-	"SQRTF",
-	"SQRTD",
-	"ABSF",
-	"ABSD",
-	"SRL",
-	"SRA",
-	"SLL",
-	"MULU",
-	"DIVU",
-	"MUL",
-	"DIV",
-	"MOD",
-	"MODU",
-	"MOVB",
-	"MOVBS",
-	"MOVBU",
-	"MOVH",
-	"MOVHS",
-	"MOVHU",
-	"MOVW",
-	"MOVM",
-	"SWPBU",
-	"SWPW",
-	"RFE",
-	"SWI",
-	"MULA",
-	"WORD",
-	"BCASE",
-	"CASE",
-	"MULL",
-	"MULAL",
-	"MULLU",
-	"MULALU",
-	"BX",
-	"BXRET",
-	"DWORD",
-	"LDREX",
-	"STREX",
-	"LDREXD",
-	"STREXD",
-	"PLD",
-	"CLZ",
-	"MULWT",
-	"MULWB",
-	"MULAWT",
-	"MULAWB",
-	"DATABUNDLE",
-	"DATABUNDLEEND",
-	"MRC",
-	"LAST",
-}
+package arm
 
 var cnames5 = []string{
 	"NONE",
diff --git a/src/cmd/internal/obj/ppc64/9.out.go b/src/cmd/internal/obj/ppc64/9.out.go
index 411c951a58..208dfa3be7 100644
--- a/src/cmd/internal/obj/ppc64/9.out.go
+++ b/src/cmd/internal/obj/ppc64/9.out.go
@@ -31,7 +31,7 @@ package ppc64
 
 import "cmd/internal/obj"
 
-// auto generated by go tool dist
+//go:generate go run ../stringer.go -i $GOFILE -o anames.go -p ppc64
 
 /*
  * powerpc 64
diff --git a/src/cmd/internal/obj/ppc64/anames.go b/src/cmd/internal/obj/ppc64/anames.go
new file mode 100644
index 0000000000..09ed54cf28
--- /dev/null
+++ b/src/cmd/internal/obj/ppc64/anames.go
@@ -0,0 +1,300 @@
+// Generated by stringer -i 9.out.go -o anames.go -p ppc64
+// Do not edit.
+
+package ppc64
+
+import "cmd/internal/obj"
+
+var Anames = []string{
+	obj.A_ARCHSPECIFIC: "ADD",
+	"ADDCC",
+	"ADDV",
+	"ADDVCC",
+	"ADDC",
+	"ADDCCC",
+	"ADDCV",
+	"ADDCVCC",
+	"ADDME",
+	"ADDMECC",
+	"ADDMEVCC",
+	"ADDMEV",
+	"ADDE",
+	"ADDECC",
+	"ADDEVCC",
+	"ADDEV",
+	"ADDZE",
+	"ADDZECC",
+	"ADDZEVCC",
+	"ADDZEV",
+	"AND",
+	"ANDCC",
+	"ANDN",
+	"ANDNCC",
+	"BC",
+	"BCL",
+	"BEQ",
+	"BGE",
+	"BGT",
+	"BLE",
+	"BLT",
+	"BNE",
+	"BVC",
+	"BVS",
+	"CMP",
+	"CMPU",
+	"CNTLZW",
+	"CNTLZWCC",
+	"CRAND",
+	"CRANDN",
+	"CREQV",
+	"CRNAND",
+	"CRNOR",
+	"CROR",
+	"CRORN",
+	"CRXOR",
+	"DIVW",
+	"DIVWCC",
+	"DIVWVCC",
+	"DIVWV",
+	"DIVWU",
+	"DIVWUCC",
+	"DIVWUVCC",
+	"DIVWUV",
+	"EQV",
+	"EQVCC",
+	"EXTSB",
+	"EXTSBCC",
+	"EXTSH",
+	"EXTSHCC",
+	"FABS",
+	"FABSCC",
+	"FADD",
+	"FADDCC",
+	"FADDS",
+	"FADDSCC",
+	"FCMPO",
+	"FCMPU",
+	"FCTIW",
+	"FCTIWCC",
+	"FCTIWZ",
+	"FCTIWZCC",
+	"FDIV",
+	"FDIVCC",
+	"FDIVS",
+	"FDIVSCC",
+	"FMADD",
+	"FMADDCC",
+	"FMADDS",
+	"FMADDSCC",
+	"FMOVD",
+	"FMOVDCC",
+	"FMOVDU",
+	"FMOVS",
+	"FMOVSU",
+	"FMSUB",
+	"FMSUBCC",
+	"FMSUBS",
+	"FMSUBSCC",
+	"FMUL",
+	"FMULCC",
+	"FMULS",
+	"FMULSCC",
+	"FNABS",
+	"FNABSCC",
+	"FNEG",
+	"FNEGCC",
+	"FNMADD",
+	"FNMADDCC",
+	"FNMADDS",
+	"FNMADDSCC",
+	"FNMSUB",
+	"FNMSUBCC",
+	"FNMSUBS",
+	"FNMSUBSCC",
+	"FRSP",
+	"FRSPCC",
+	"FSUB",
+	"FSUBCC",
+	"FSUBS",
+	"FSUBSCC",
+	"MOVMW",
+	"LSW",
+	"LWAR",
+	"MOVWBR",
+	"MOVB",
+	"MOVBU",
+	"MOVBZ",
+	"MOVBZU",
+	"MOVH",
+	"MOVHBR",
+	"MOVHU",
+	"MOVHZ",
+	"MOVHZU",
+	"MOVW",
+	"MOVWU",
+	"MOVFL",
+	"MOVCRFS",
+	"MTFSB0",
+	"MTFSB0CC",
+	"MTFSB1",
+	"MTFSB1CC",
+	"MULHW",
+	"MULHWCC",
+	"MULHWU",
+	"MULHWUCC",
+	"MULLW",
+	"MULLWCC",
+	"MULLWVCC",
+	"MULLWV",
+	"NAND",
+	"NANDCC",
+	"NEG",
+	"NEGCC",
+	"NEGVCC",
+	"NEGV",
+	"NOR",
+	"NORCC",
+	"OR",
+	"ORCC",
+	"ORN",
+	"ORNCC",
+	"REM",
+	"REMCC",
+	"REMV",
+	"REMVCC",
+	"REMU",
+	"REMUCC",
+	"REMUV",
+	"REMUVCC",
+	"RFI",
+	"RLWMI",
+	"RLWMICC",
+	"RLWNM",
+	"RLWNMCC",
+	"SLW",
+	"SLWCC",
+	"SRW",
+	"SRAW",
+	"SRAWCC",
+	"SRWCC",
+	"STSW",
+	"STWCCC",
+	"SUB",
+	"SUBCC",
+	"SUBVCC",
+	"SUBC",
+	"SUBCCC",
+	"SUBCV",
+	"SUBCVCC",
+	"SUBME",
+	"SUBMECC",
+	"SUBMEVCC",
+	"SUBMEV",
+	"SUBV",
+	"SUBE",
+	"SUBECC",
+	"SUBEV",
+	"SUBEVCC",
+	"SUBZE",
+	"SUBZECC",
+	"SUBZEVCC",
+	"SUBZEV",
+	"SYNC",
+	"XOR",
+	"XORCC",
+	"DCBF",
+	"DCBI",
+	"DCBST",
+	"DCBT",
+	"DCBTST",
+	"DCBZ",
+	"ECIWX",
+	"ECOWX",
+	"EIEIO",
+	"ICBI",
+	"ISYNC",
+	"PTESYNC",
+	"TLBIE",
+	"TLBIEL",
+	"TLBSYNC",
+	"TW",
+	"SYSCALL",
+	"WORD",
+	"RFCI",
+	"FRES",
+	"FRESCC",
+	"FRSQRTE",
+	"FRSQRTECC",
+	"FSEL",
+	"FSELCC",
+	"FSQRT",
+	"FSQRTCC",
+	"FSQRTS",
+	"FSQRTSCC",
+	"CNTLZD",
+	"CNTLZDCC",
+	"CMPW",
+	"CMPWU",
+	"DIVD",
+	"DIVDCC",
+	"DIVDVCC",
+	"DIVDV",
+	"DIVDU",
+	"DIVDUCC",
+	"DIVDUVCC",
+	"DIVDUV",
+	"EXTSW",
+	"EXTSWCC",
+	"FCFID",
+	"FCFIDCC",
+	"FCTID",
+	"FCTIDCC",
+	"FCTIDZ",
+	"FCTIDZCC",
+	"LDAR",
+	"MOVD",
+	"MOVDU",
+	"MOVWZ",
+	"MOVWZU",
+	"MULHD",
+	"MULHDCC",
+	"MULHDU",
+	"MULHDUCC",
+	"MULLD",
+	"MULLDCC",
+	"MULLDVCC",
+	"MULLDV",
+	"RFID",
+	"RLDMI",
+	"RLDMICC",
+	"RLDC",
+	"RLDCCC",
+	"RLDCR",
+	"RLDCRCC",
+	"RLDCL",
+	"RLDCLCC",
+	"SLBIA",
+	"SLBIE",
+	"SLBMFEE",
+	"SLBMFEV",
+	"SLBMTE",
+	"SLD",
+	"SLDCC",
+	"SRD",
+	"SRAD",
+	"SRADCC",
+	"SRDCC",
+	"STDCCC",
+	"TD",
+	"DWORD",
+	"REMD",
+	"REMDCC",
+	"REMDV",
+	"REMDVCC",
+	"REMDU",
+	"REMDUCC",
+	"REMDUV",
+	"REMDUVCC",
+	"HRFID",
+	"LAST",
+}
diff --git a/src/cmd/internal/obj/ppc64/anames9.go b/src/cmd/internal/obj/ppc64/anames9.go
index 057256a430..b48e5162b0 100644
--- a/src/cmd/internal/obj/ppc64/anames9.go
+++ b/src/cmd/internal/obj/ppc64/anames9.go
@@ -1,301 +1,5 @@
 package ppc64
 
-import "cmd/internal/obj"
-
-var Anames = []string{
-	obj.A_ARCHSPECIFIC: "ADD",
-	"ADDCC",
-	"ADDV",
-	"ADDVCC",
-	"ADDC",
-	"ADDCCC",
-	"ADDCV",
-	"ADDCVCC",
-	"ADDME",
-	"ADDMECC",
-	"ADDMEVCC",
-	"ADDMEV",
-	"ADDE",
-	"ADDECC",
-	"ADDEVCC",
-	"ADDEV",
-	"ADDZE",
-	"ADDZECC",
-	"ADDZEVCC",
-	"ADDZEV",
-	"AND",
-	"ANDCC",
-	"ANDN",
-	"ANDNCC",
-	"BC",
-	"BCL",
-	"BEQ",
-	"BGE",
-	"BGT",
-	"BLE",
-	"BLT",
-	"BNE",
-	"BVC",
-	"BVS",
-	"CMP",
-	"CMPU",
-	"CNTLZW",
-	"CNTLZWCC",
-	"CRAND",
-	"CRANDN",
-	"CREQV",
-	"CRNAND",
-	"CRNOR",
-	"CROR",
-	"CRORN",
-	"CRXOR",
-	"DIVW",
-	"DIVWCC",
-	"DIVWVCC",
-	"DIVWV",
-	"DIVWU",
-	"DIVWUCC",
-	"DIVWUVCC",
-	"DIVWUV",
-	"EQV",
-	"EQVCC",
-	"EXTSB",
-	"EXTSBCC",
-	"EXTSH",
-	"EXTSHCC",
-	"FABS",
-	"FABSCC",
-	"FADD",
-	"FADDCC",
-	"FADDS",
-	"FADDSCC",
-	"FCMPO",
-	"FCMPU",
-	"FCTIW",
-	"FCTIWCC",
-	"FCTIWZ",
-	"FCTIWZCC",
-	"FDIV",
-	"FDIVCC",
-	"FDIVS",
-	"FDIVSCC",
-	"FMADD",
-	"FMADDCC",
-	"FMADDS",
-	"FMADDSCC",
-	"FMOVD",
-	"FMOVDCC",
-	"FMOVDU",
-	"FMOVS",
-	"FMOVSU",
-	"FMSUB",
-	"FMSUBCC",
-	"FMSUBS",
-	"FMSUBSCC",
-	"FMUL",
-	"FMULCC",
-	"FMULS",
-	"FMULSCC",
-	"FNABS",
-	"FNABSCC",
-	"FNEG",
-	"FNEGCC",
-	"FNMADD",
-	"FNMADDCC",
-	"FNMADDS",
-	"FNMADDSCC",
-	"FNMSUB",
-	"FNMSUBCC",
-	"FNMSUBS",
-	"FNMSUBSCC",
-	"FRSP",
-	"FRSPCC",
-	"FSUB",
-	"FSUBCC",
-	"FSUBS",
-	"FSUBSCC",
-	"MOVMW",
-	"LSW",
-	"LWAR",
-	"MOVWBR",
-	"MOVB",
-	"MOVBU",
-	"MOVBZ",
-	"MOVBZU",
-	"MOVH",
-	"MOVHBR",
-	"MOVHU",
-	"MOVHZ",
-	"MOVHZU",
-	"MOVW",
-	"MOVWU",
-	"MOVFL",
-	"MOVCRFS",
-	"MTFSB0",
-	"MTFSB0CC",
-	"MTFSB1",
-	"MTFSB1CC",
-	"MULHW",
-	"MULHWCC",
-	"MULHWU",
-	"MULHWUCC",
-	"MULLW",
-	"MULLWCC",
-	"MULLWVCC",
-	"MULLWV",
-	"NAND",
-	"NANDCC",
-	"NEG",
-	"NEGCC",
-	"NEGVCC",
-	"NEGV",
-	"NOR",
-	"NORCC",
-	"OR",
-	"ORCC",
-	"ORN",
-	"ORNCC",
-	"REM",
-	"REMCC",
-	"REMV",
-	"REMVCC",
-	"REMU",
-	"REMUCC",
-	"REMUV",
-	"REMUVCC",
-	"RFI",
-	"RLWMI",
-	"RLWMICC",
-	"RLWNM",
-	"RLWNMCC",
-	"SLW",
-	"SLWCC",
-	"SRW",
-	"SRAW",
-	"SRAWCC",
-	"SRWCC",
-	"STSW",
-	"STWCCC",
-	"SUB",
-	"SUBCC",
-	"SUBVCC",
-	"SUBC",
-	"SUBCCC",
-	"SUBCV",
-	"SUBCVCC",
-	"SUBME",
-	"SUBMECC",
-	"SUBMEVCC",
-	"SUBMEV",
-	"SUBV",
-	"SUBE",
-	"SUBECC",
-	"SUBEV",
-	"SUBEVCC",
-	"SUBZE",
-	"SUBZECC",
-	"SUBZEVCC",
-	"SUBZEV",
-	"SYNC",
-	"XOR",
-	"XORCC",
-	"DCBF",
-	"DCBI",
-	"DCBST",
-	"DCBT",
-	"DCBTST",
-	"DCBZ",
-	"ECIWX",
-	"ECOWX",
-	"EIEIO",
-	"ICBI",
-	"ISYNC",
-	"PTESYNC",
-	"TLBIE",
-	"TLBIEL",
-	"TLBSYNC",
-	"TW",
-	"SYSCALL",
-	"WORD",
-	"RFCI",
-	"FRES",
-	"FRESCC",
-	"FRSQRTE",
-	"FRSQRTECC",
-	"FSEL",
-	"FSELCC",
-	"FSQRT",
-	"FSQRTCC",
-	"FSQRTS",
-	"FSQRTSCC",
-	"CNTLZD",
-	"CNTLZDCC",
-	"CMPW",
-	"CMPWU",
-	"DIVD",
-	"DIVDCC",
-	"DIVDVCC",
-	"DIVDV",
-	"DIVDU",
-	"DIVDUCC",
-	"DIVDUVCC",
-	"DIVDUV",
-	"EXTSW",
-	"EXTSWCC",
-	"FCFID",
-	"FCFIDCC",
-	"FCTID",
-	"FCTIDCC",
-	"FCTIDZ",
-	"FCTIDZCC",
-	"LDAR",
-	"MOVD",
-	"MOVDU",
-	"MOVWZ",
-	"MOVWZU",
-	"MULHD",
-	"MULHDCC",
-	"MULHDU",
-	"MULHDUCC",
-	"MULLD",
-	"MULLDCC",
-	"MULLDVCC",
-	"MULLDV",
-	"RFID",
-	"RLDMI",
-	"RLDMICC",
-	"RLDC",
-	"RLDCCC",
-	"RLDCR",
-	"RLDCRCC",
-	"RLDCL",
-	"RLDCLCC",
-	"SLBIA",
-	"SLBIE",
-	"SLBMFEE",
-	"SLBMFEV",
-	"SLBMTE",
-	"SLD",
-	"SLDCC",
-	"SRD",
-	"SRAD",
-	"SRADCC",
-	"SRDCC",
-	"STDCCC",
-	"TD",
-	"DWORD",
-	"REMD",
-	"REMDCC",
-	"REMDV",
-	"REMDVCC",
-	"REMDU",
-	"REMDUCC",
-	"REMDUV",
-	"REMDUVCC",
-	"HRFID",
-	"LAST",
-}
-
 var cnames9 = []string{
 	"NONE",
 	"REG",
diff --git a/src/cmd/internal/obj/stringer.go b/src/cmd/internal/obj/stringer.go
new file mode 100644
index 0000000000..c4b3712359
--- /dev/null
+++ b/src/cmd/internal/obj/stringer.go
@@ -0,0 +1,104 @@
+// 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.
+
+// +build ignore
+
+// This is a mini version of the stringer tool customized for the Anames table
+// in the architecture support for obj.
+// This version just generates the slice of strings, not the String method.
+
+package main
+
+import (
+	"bufio"
+	"flag"
+	"fmt"
+	"log"
+	"os"
+	"regexp"
+	"strings"
+)
+
+var (
+	input  = flag.String("i", "", "input file name")
+	output = flag.String("o", "", "output file name")
+	pkg    = flag.String("p", "", "package name")
+)
+
+var Are = regexp.MustCompile(`^\tA([A-Z0-9]+)`)
+
+func main() {
+	flag.Parse()
+	if *input == "" || *output == "" || *pkg == "" {
+		flag.Usage()
+		os.Exit(2)
+	}
+	in, err := os.Open(*input)
+	if err != nil {
+		log.Fatal(err)
+	}
+	fd, err := os.Create(*output)
+	if err != nil {
+		log.Fatal(err)
+	}
+	out := bufio.NewWriter(fd)
+	defer out.Flush()
+	var on = false
+	s := bufio.NewScanner(in)
+	first := true
+	for s.Scan() {
+		line := s.Text()
+		if !on {
+			// First relevant line contains "= obj.ABase".
+			// If we find it, delete the = so we don't stop immediately.
+			const prefix = "= obj.ABase"
+			index := strings.Index(line, prefix)
+			if index < 0 {
+				continue
+			}
+			// It's on. Start with the header.
+			fmt.Fprintf(out, header, *input, *output, *pkg, *pkg)
+			on = true
+			line = line[:index]
+		}
+		// Strip comments so their text won't defeat our heuristic.
+		index := strings.Index(line, "//")
+		if index > 0 {
+			line = line[:index]
+		}
+		index = strings.Index(line, "/*")
+		if index > 0 {
+			line = line[:index]
+		}
+		// Termination condition: Any line with an = changes the sequence,
+		// so stop there, and stop at a closing brace.
+		if strings.HasPrefix(line, "}") || strings.ContainsRune(line, '=') {
+			break
+		}
+		sub := Are.FindStringSubmatch(line)
+		if len(sub) < 2 {
+			continue
+		}
+		if first {
+			fmt.Fprintf(out, "\tobj.A_ARCHSPECIFIC: %q,\n", sub[1])
+			first = false
+		} else {
+			fmt.Fprintf(out, "\t%q,\n", sub[1])
+		}
+	}
+	fmt.Fprintln(out, "}")
+	if s.Err() != nil {
+		log.Fatal(err)
+	}
+}
+
+const header = `// Generated by stringer -i %s -o %s -p %s
+// Do not edit.
+
+package %s
+
+import "cmd/internal/obj"
+
+var Anames = []string{
+`
diff --git a/src/cmd/internal/obj/x86/6.out.go b/src/cmd/internal/obj/x86/6.out.go
index 2734f6a4a9..c7f46e1801 100644
--- a/src/cmd/internal/obj/x86/6.out.go
+++ b/src/cmd/internal/obj/x86/6.out.go
@@ -32,6 +32,8 @@ package x86
 
 import "cmd/internal/obj"
 
+//go:generate go run ../stringer.go -i $GOFILE -o anames.go -p x86
+
 /*
  *	amd64
  */
diff --git a/src/cmd/internal/obj/x86/anames6.go b/src/cmd/internal/obj/x86/anames.go
similarity index 98%
rename from src/cmd/internal/obj/x86/anames6.go
rename to src/cmd/internal/obj/x86/anames.go
index 2b78233fe5..7f7dd56124 100644
--- a/src/cmd/internal/obj/x86/anames6.go
+++ b/src/cmd/internal/obj/x86/anames.go
@@ -1,10 +1,10 @@
+// Generated by stringer -i 6.out.go -o anames.go -p x86
+// Do not edit.
+
 package x86
 
 import "cmd/internal/obj"
 
-/*
- * this is the ranlib header
- */
 var Anames = []string{
 	obj.A_ARCHSPECIFIC: "AAA",
 	"AAD",