diff options
| author | Mark Ryan <markdryan@rivosinc.com> | 2023-11-07 10:09:49 +0100 |
|---|---|---|
| committer | Joel Sing <joel@sing.id.au> | 2024-01-24 07:25:25 +0000 |
| commit | b4e7d630bc6fbf654a20a4bebda94a8150811bea (patch) | |
| tree | 496a37c6588cbe32311b8534619138e7cf0ef345 /src/cmd/go/alldocs.go | |
| parent | b3acaa8230e95c232a6f5c30eb7619a0c859ab16 (diff) | |
| download | go-b4e7d630bc6fbf654a20a4bebda94a8150811bea.tar.gz go-b4e7d630bc6fbf654a20a4bebda94a8150811bea.zip | |
cmd/go: add GORISCV64 environment variable
The variable represents the RISC-V user-mode application profile for
which to compile. Valid values are rva20u64 (the default) and
rva22u64.
Setting GORISCV64=rva20u64 defines the riscv64.rva20u64 build tag,
sets the internal variable buildcfg.GORISCV64 to 20 and defines the
macro GORISCV64_rva20u64 for use in assembly language code.
Setting GORISCV64=rva22u64 defines the riscv64.rva20u64 and
riscv64.rva22u64 build tags, sets the internal variable
buildcfg.GORISCV64 to 22 and defines the macro GORISCV64_rva22u64
for use in assembly language code.
This patch only provides a mechanism for the compiler and hand-coded
assembly language functions to take advantage of the RISC-V
extensions mandated by the application profiles. Further patches
will be required to get the compiler/assembler and assembly language
functions to actually generate and use these extensions.
Fixes #61476
Change-Id: I9195ae6ee71703cd2112160e89157ab63b8391af
Reviewed-on: https://go-review.googlesource.com/c/go/+/541135
Reviewed-by: M Zhuo <mengzhuo1203@gmail.com>
Reviewed-by: Joel Sing <joel@sing.id.au>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Wang Yaduo <wangyaduo@linux.alibaba.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Reviewed-by: Bryan Mills <bcmills@google.com>
Run-TryBot: M Zhuo <mengzhuo1203@gmail.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Diffstat (limited to 'src/cmd/go/alldocs.go')
| -rw-r--r-- | src/cmd/go/alldocs.go | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/cmd/go/alldocs.go b/src/cmd/go/alldocs.go index e61e865c84..05e42a6d31 100644 --- a/src/cmd/go/alldocs.go +++ b/src/cmd/go/alldocs.go @@ -2001,10 +2001,13 @@ // ppc64.power8, ppc64.power9, and ppc64.power10 // (or ppc64le.power8, ppc64le.power9, and ppc64le.power10) // feature build tags. +// - For GOARCH=riscv64, +// GORISCV64=rva20u64 and rva22u64 correspond to the riscv64.rva20u64 +// and riscv64.rva22u64 build tags. // - For GOARCH=wasm, GOWASM=satconv and signext // correspond to the wasm.satconv and wasm.signext feature build tags. // -// For GOARCH=amd64, arm, ppc64, and ppc64le, a particular feature level +// For GOARCH=amd64, arm, ppc64, ppc64le, and riscv64, a particular feature level // sets the feature build tags for all previous levels as well. // For example, GOAMD64=v2 sets the amd64.v1 and amd64.v2 feature flags. // This ensures that code making use of v2 features continues to compile @@ -2300,6 +2303,10 @@ // GOPPC64 // For GOARCH=ppc64{,le}, the target ISA (Instruction Set Architecture). // Valid values are power8 (default), power9, power10. +// GORISCV64 +// For GOARCH=riscv64, the RISC-V user-mode application profile for which +// to compile. Valid values are rva20u64 (default), rva22u64. +// See https://github.com/riscv/riscv-profiles/blob/main/profiles.adoc // GOWASM // For GOARCH=wasm, comma-separated list of experimental WebAssembly features to use. // Valid values are satconv, signext. |