go/build, runtime/internal/sys: reserve RISC-V arch names

In #17528 it was discussed (off-topic to the actual issue) to reserve
GOARCH names for the RISC-V architecture. With the first RISC-V
Linux-capable development boards released (e.g. HiFive Unleashed),
Linux distributions being ported to RISC-V (e.g. Debian, Fedora) and
RISC-V support being added to gccgo (CL 96377), it becomes more likely
that Go software (and maybe Go itself) will be ported as well.

Add riscv and riscv64 (which is already used by gccgo), so Go 1.11 will
already recognize "*_riscv{,64}.go" as reserved files.

Change-Id: I042aab19c68751d82ea513e40f7b1d7e1ad924ea
Reviewed-on: https://go-review.googlesource.com/106256
Run-TryBot: Tobias Klauser <tobias.klauser@gmail.com>
TryBot-Result: Gobot Gobot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@golang.org>

src/go/build/syslist.go

@@ -5,4 +5,4 @@
 package build
 
 const goosList = "android darwin dragonfly freebsd js linux nacl netbsd openbsd plan9 solaris windows zos "
-const goarchList = "386 amd64 amd64p32 arm armbe arm64 arm64be ppc64 ppc64le mips mipsle mips64 mips64le mips64p32 mips64p32le ppc s390 s390x sparc sparc64 wasm "
+const goarchList = "386 amd64 amd64p32 arm armbe arm64 arm64be ppc64 ppc64le mips mipsle mips64 mips64le mips64p32 mips64p32le ppc riscv riscv64 s390 s390x sparc sparc64 wasm "

src/runtime/internal/sys/zgoarch_386.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_amd64.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_amd64p32.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_arm.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_arm64.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_arm64be.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_armbe.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_mips.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_mips64.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_mips64le.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 1
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_mips64p32.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 1
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_mips64p32le.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 1
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_mipsle.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_ppc.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 1
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_ppc64.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_ppc64le.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_riscv.go

@@ -0,0 +1,31 @@
+// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+
+// +build riscv
+
+package sys
+
+const GOARCH = `riscv`
+
+const Goarch386 = 0
+const GoarchAmd64 = 0
+const GoarchAmd64p32 = 0
+const GoarchArm = 0
+const GoarchArmbe = 0
+const GoarchArm64 = 0
+const GoarchArm64be = 0
+const GoarchPpc64 = 0
+const GoarchPpc64le = 0
+const GoarchMips = 0
+const GoarchMipsle = 0
+const GoarchMips64 = 0
+const GoarchMips64le = 0
+const GoarchMips64p32 = 0
+const GoarchMips64p32le = 0
+const GoarchPpc = 0
+const GoarchRiscv = 1
+const GoarchRiscv64 = 0
+const GoarchS390 = 0
+const GoarchS390x = 0
+const GoarchSparc = 0
+const GoarchSparc64 = 0
+const GoarchWasm = 0

src/runtime/internal/sys/zgoarch_riscv64.go

@@ -0,0 +1,31 @@
+// Code generated by gengoos.go using 'go generate'. DO NOT EDIT.
+
+// +build riscv64
+
+package sys
+
+const GOARCH = `riscv64`
+
+const Goarch386 = 0
+const GoarchAmd64 = 0
+const GoarchAmd64p32 = 0
+const GoarchArm = 0
+const GoarchArmbe = 0
+const GoarchArm64 = 0
+const GoarchArm64be = 0
+const GoarchPpc64 = 0
+const GoarchPpc64le = 0
+const GoarchMips = 0
+const GoarchMipsle = 0
+const GoarchMips64 = 0
+const GoarchMips64le = 0
+const GoarchMips64p32 = 0
+const GoarchMips64p32le = 0
+const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 1
+const GoarchS390 = 0
+const GoarchS390x = 0
+const GoarchSparc = 0
+const GoarchSparc64 = 0
+const GoarchWasm = 0

src/runtime/internal/sys/zgoarch_s390.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 1
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_s390x.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 1
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_sparc.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 1

src/runtime/internal/sys/zgoarch_sparc64.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0

src/runtime/internal/sys/zgoarch_wasm.go

@@ -22,6 +22,8 @@ const GoarchMips64le = 0
 const GoarchMips64p32 = 0
 const GoarchMips64p32le = 0
 const GoarchPpc = 0
+const GoarchRiscv = 0
+const GoarchRiscv64 = 0
 const GoarchS390 = 0
 const GoarchS390x = 0
 const GoarchSparc = 0