diff options
| author | Andy Pan <panjf2000@gmail.com> | 2024-02-01 10:21:14 +0800 |
|---|---|---|
| committer | Gopher Robot <gobot@golang.org> | 2024-03-25 19:53:03 +0000 |
| commit | 4c2b1e0feb3d3112da94fa4cd11ebe995003fa89 (patch) | |
| tree | b3d9dfee9dc61d066c0abfdf875e1995ef5e042f /src/runtime/internal/atomic/atomic_mipsx.go | |
| parent | b1182f22c0e557840239dfa80259d6b8c67fb559 (diff) | |
| download | go-4c2b1e0feb3d3112da94fa4cd11ebe995003fa89.tar.xz | |
runtime: migrate internal/atomic to internal/runtime
For #65355
Change-Id: I65dd090fb99de9b231af2112c5ccb0eb635db2be
Reviewed-on: https://go-review.googlesource.com/c/go/+/560155
Reviewed-by: David Chase <drchase@google.com>
Reviewed-by: Michael Pratt <mpratt@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ibrahim Bazoka <ibrahimbazoka729@gmail.com>
Auto-Submit: Emmanuel Odeke <emmanuel@orijtech.com>
Diffstat (limited to 'src/runtime/internal/atomic/atomic_mipsx.go')
| -rw-r--r-- | src/runtime/internal/atomic/atomic_mipsx.go | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/src/runtime/internal/atomic/atomic_mipsx.go b/src/runtime/internal/atomic/atomic_mipsx.go deleted file mode 100644 index e3dcde1bde..0000000000 --- a/src/runtime/internal/atomic/atomic_mipsx.go +++ /dev/null @@ -1,162 +0,0 @@ -// Copyright 2016 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. - -//go:build mips || mipsle - -// Export some functions via linkname to assembly in sync/atomic. -// -//go:linkname Xadd64 -//go:linkname Xchg64 -//go:linkname Cas64 -//go:linkname Load64 -//go:linkname Store64 - -package atomic - -import ( - "internal/cpu" - "unsafe" -) - -// TODO implement lock striping -var lock struct { - state uint32 - pad [cpu.CacheLinePadSize - 4]byte -} - -//go:noescape -func spinLock(state *uint32) - -//go:noescape -func spinUnlock(state *uint32) - -//go:nosplit -func lockAndCheck(addr *uint64) { - // ensure 8-byte alignment - if uintptr(unsafe.Pointer(addr))&7 != 0 { - panicUnaligned() - } - // force dereference before taking lock - _ = *addr - - spinLock(&lock.state) -} - -//go:nosplit -func unlock() { - spinUnlock(&lock.state) -} - -//go:nosplit -func Xadd64(addr *uint64, delta int64) (new uint64) { - lockAndCheck(addr) - - new = *addr + uint64(delta) - *addr = new - - unlock() - return -} - -//go:nosplit -func Xchg64(addr *uint64, new uint64) (old uint64) { - lockAndCheck(addr) - - old = *addr - *addr = new - - unlock() - return -} - -//go:nosplit -func Cas64(addr *uint64, old, new uint64) (swapped bool) { - lockAndCheck(addr) - - if (*addr) == old { - *addr = new - unlock() - return true - } - - unlock() - return false -} - -//go:nosplit -func Load64(addr *uint64) (val uint64) { - lockAndCheck(addr) - - val = *addr - - unlock() - return -} - -//go:nosplit -func Store64(addr *uint64, val uint64) { - lockAndCheck(addr) - - *addr = val - - unlock() - return -} - -//go:noescape -func Xadd(ptr *uint32, delta int32) uint32 - -//go:noescape -func Xadduintptr(ptr *uintptr, delta uintptr) uintptr - -//go:noescape -func Xchg(ptr *uint32, new uint32) uint32 - -//go:noescape -func Xchguintptr(ptr *uintptr, new uintptr) uintptr - -//go:noescape -func Load(ptr *uint32) uint32 - -//go:noescape -func Load8(ptr *uint8) uint8 - -// NO go:noescape annotation; *ptr escapes if result escapes (#31525) -func Loadp(ptr unsafe.Pointer) unsafe.Pointer - -//go:noescape -func LoadAcq(ptr *uint32) uint32 - -//go:noescape -func LoadAcquintptr(ptr *uintptr) uintptr - -//go:noescape -func And8(ptr *uint8, val uint8) - -//go:noescape -func Or8(ptr *uint8, val uint8) - -//go:noescape -func And(ptr *uint32, val uint32) - -//go:noescape -func Or(ptr *uint32, val uint32) - -//go:noescape -func Store(ptr *uint32, val uint32) - -//go:noescape -func Store8(ptr *uint8, val uint8) - -// NO go:noescape annotation; see atomic_pointer.go. -func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer) - -//go:noescape -func StoreRel(ptr *uint32, val uint32) - -//go:noescape -func StoreReluintptr(ptr *uintptr, val uintptr) - -//go:noescape -func CasRel(addr *uint32, old, new uint32) bool |