github.com/geraldss/go/src@v0.0.0-20210511222824-ac7d0ebfc235/runtime/internal/atomic/atomic_s390x.go (about)

     1  // Copyright 2016 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package atomic
     6  
     7  import "unsafe"
     8  
     9  // Export some functions via linkname to assembly in sync/atomic.
    10  //go:linkname Load
    11  //go:linkname Loadp
    12  //go:linkname Load64
    13  
    14  //go:nosplit
    15  //go:noinline
    16  func Load(ptr *uint32) uint32 {
    17  	return *ptr
    18  }
    19  
    20  //go:nosplit
    21  //go:noinline
    22  func Loadp(ptr unsafe.Pointer) unsafe.Pointer {
    23  	return *(*unsafe.Pointer)(ptr)
    24  }
    25  
    26  //go:nosplit
    27  //go:noinline
    28  func Load8(ptr *uint8) uint8 {
    29  	return *ptr
    30  }
    31  
    32  //go:nosplit
    33  //go:noinline
    34  func Load64(ptr *uint64) uint64 {
    35  	return *ptr
    36  }
    37  
    38  //go:nosplit
    39  //go:noinline
    40  func LoadAcq(ptr *uint32) uint32 {
    41  	return *ptr
    42  }
    43  
    44  //go:nosplit
    45  //go:noinline
    46  func LoadAcq64(ptr *uint64) uint64 {
    47  	return *ptr
    48  }
    49  
    50  //go:nosplit
    51  //go:noinline
    52  func LoadAcquintptr(ptr *uintptr) uintptr {
    53  	return *ptr
    54  }
    55  
    56  //go:noescape
    57  func Store(ptr *uint32, val uint32)
    58  
    59  //go:noescape
    60  func Store8(ptr *uint8, val uint8)
    61  
    62  //go:noescape
    63  func Store64(ptr *uint64, val uint64)
    64  
    65  // NO go:noescape annotation; see atomic_pointer.go.
    66  func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer)
    67  
    68  //go:nosplit
    69  //go:noinline
    70  func StoreRel(ptr *uint32, val uint32) {
    71  	*ptr = val
    72  }
    73  
    74  //go:nosplit
    75  //go:noinline
    76  func StoreRel64(ptr *uint64, val uint64) {
    77  	*ptr = val
    78  }
    79  
    80  //go:nosplit
    81  //go:noinline
    82  func StoreReluintptr(ptr *uintptr, val uintptr) {
    83  	*ptr = val
    84  }
    85  
    86  //go:noescape
    87  func And8(ptr *uint8, val uint8)
    88  
    89  //go:noescape
    90  func Or8(ptr *uint8, val uint8)
    91  
    92  // NOTE: Do not add atomicxor8 (XOR is not idempotent).
    93  
    94  //go:noescape
    95  func And(ptr *uint32, val uint32)
    96  
    97  //go:noescape
    98  func Or(ptr *uint32, val uint32)
    99  
   100  //go:noescape
   101  func Xadd(ptr *uint32, delta int32) uint32
   102  
   103  //go:noescape
   104  func Xadd64(ptr *uint64, delta int64) uint64
   105  
   106  //go:noescape
   107  func Xadduintptr(ptr *uintptr, delta uintptr) uintptr
   108  
   109  //go:noescape
   110  func Xchg(ptr *uint32, new uint32) uint32
   111  
   112  //go:noescape
   113  func Xchg64(ptr *uint64, new uint64) uint64
   114  
   115  //go:noescape
   116  func Xchguintptr(ptr *uintptr, new uintptr) uintptr
   117  
   118  //go:noescape
   119  func Cas64(ptr *uint64, old, new uint64) bool
   120  
   121  //go:noescape
   122  func CasRel(ptr *uint32, old, new uint32) bool