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| author | Xiaodong Liu <liuxiaodong@loongson.cn> | 2022-05-19 20:01:10 +0800 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2022-05-19 19:13:17 +0000 |
| commit | 96a10b9c8469110a0aa30ea2185ca55f4aefef99 (patch) | |
| tree | dae84b7d60bbf011a6107cfaaff5f38256e75b49 /src/runtime/mkduff.go | |
| parent | 2a5114f49af42c1df293e64841b28c22a84211f0 (diff) | |
| download | go-96a10b9c8469110a0aa30ea2185ca55f4aefef99.tar.xz | |
runtime: implement duffzero/duffcopy for linux/loong64
Contributors to the loong64 port are:
Weining Lu <luweining@loongson.cn>
Lei Wang <wanglei@loongson.cn>
Lingqin Gong <gonglingqin@loongson.cn>
Xiaolin Zhao <zhaoxiaolin@loongson.cn>
Meidan Li <limeidan@loongson.cn>
Xiaojuan Zhai <zhaixiaojuan@loongson.cn>
Qiyuan Pu <puqiyuan@loongson.cn>
Guoqi Chen <chenguoqi@loongson.cn>
This port has been updated to Go 1.15.6:
https://github.com/loongson/go
Updates #46229
Change-Id: Ida040e76dc8172f60e6aee1ea2b5bce13ab3581e
Reviewed-on: https://go-review.googlesource.com/c/go/+/368077
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Ian Lance Taylor <iant@google.com>
Reviewed-by: Cherry Mui <cherryyz@google.com>
Auto-Submit: Ian Lance Taylor <iant@golang.org>
Run-TryBot: Ian Lance Taylor <iant@golang.org>
Diffstat (limited to 'src/runtime/mkduff.go')
| -rw-r--r-- | src/runtime/mkduff.go | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/src/runtime/mkduff.go b/src/runtime/mkduff.go index f1e4ed75d0..6b42b8524b 100644 --- a/src/runtime/mkduff.go +++ b/src/runtime/mkduff.go @@ -36,6 +36,7 @@ func main() { gen("386", notags, zero386, copy386) gen("arm", notags, zeroARM, copyARM) gen("arm64", notags, zeroARM64, copyARM64) + gen("loong64", notags, zeroLOONG64, copyLOONG64) gen("ppc64x", tagsPPC64x, zeroPPC64x, copyPPC64x) gen("mips64x", tagsMIPS64x, zeroMIPS64x, copyMIPS64x) gen("riscv64", notags, zeroRISCV64, copyRISCV64) @@ -176,6 +177,30 @@ func copyARM64(w io.Writer) { fmt.Fprintln(w, "\tRET") } +func zeroLOONG64(w io.Writer) { + // R0: always zero + // R19 (aka REGRT1): ptr to memory to be zeroed - 8 + // On return, R19 points to the last zeroed dword. + fmt.Fprintln(w, "TEXT runtime·duffzero(SB), NOSPLIT|NOFRAME, $0-0") + for i := 0; i < 128; i++ { + fmt.Fprintln(w, "\tMOVV\tR0, 8(R19)") + fmt.Fprintln(w, "\tADDV\t$8, R19") + } + fmt.Fprintln(w, "\tRET") +} + +func copyLOONG64(w io.Writer) { + fmt.Fprintln(w, "TEXT runtime·duffcopy(SB), NOSPLIT|NOFRAME, $0-0") + for i := 0; i < 128; i++ { + fmt.Fprintln(w, "\tMOVV\t(R19), R30") + fmt.Fprintln(w, "\tADDV\t$8, R19") + fmt.Fprintln(w, "\tMOVV\tR30, (R20)") + fmt.Fprintln(w, "\tADDV\t$8, R20") + fmt.Fprintln(w) + } + fmt.Fprintln(w, "\tRET") +} + func tagsPPC64x(w io.Writer) { fmt.Fprintln(w) fmt.Fprintln(w, "//go:build ppc64 || ppc64le") |