github.com/twelsh-aw/go/src@v0.0.0-20230516233729-a56fe86a7c81/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  //
    11  //go:linkname Load
    12  //go:linkname Loadp
    13  //go:linkname Load64
    14  
    15  //go:nosplit
    16  //go:noinline
    17  func Load(ptr *uint32) uint32 {
    18  	return *ptr
    19  }
    20  
    21  //go:nosplit
    22  //go:noinline
    23  func Loadp(ptr unsafe.Pointer) unsafe.Pointer {
    24  	return *(*unsafe.Pointer)(ptr)
    25  }
    26  
    27  //go:nosplit
    28  //go:noinline
    29  func Load8(ptr *uint8) uint8 {
    30  	return *ptr
    31  }
    32  
    33  //go:nosplit
    34  //go:noinline
    35  func Load64(ptr *uint64) uint64 {
    36  	return *ptr
    37  }
    38  
    39  //go:nosplit
    40  //go:noinline
    41  func LoadAcq(ptr *uint32) uint32 {
    42  	return *ptr
    43  }
    44  
    45  //go:nosplit
    46  //go:noinline
    47  func LoadAcq64(ptr *uint64) uint64 {
    48  	return *ptr
    49  }
    50  
    51  //go:nosplit
    52  //go:noinline
    53  func LoadAcquintptr(ptr *uintptr) uintptr {
    54  	return *ptr
    55  }
    56  
    57  //go:noescape
    58  func Store(ptr *uint32, val uint32)
    59  
    60  //go:noescape
    61  func Store8(ptr *uint8, val uint8)
    62  
    63  //go:noescape
    64  func Store64(ptr *uint64, val uint64)
    65  
    66  // NO go:noescape annotation; see atomic_pointer.go.
    67  func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer)
    68  
    69  //go:nosplit
    70  //go:noinline
    71  func StoreRel(ptr *uint32, val uint32) {
    72  	*ptr = val
    73  }
    74  
    75  //go:nosplit
    76  //go:noinline
    77  func StoreRel64(ptr *uint64, val uint64) {
    78  	*ptr = val
    79  }
    80  
    81  //go:nosplit
    82  //go:noinline
    83  func StoreReluintptr(ptr *uintptr, val uintptr) {
    84  	*ptr = val
    85  }
    86  
    87  //go:noescape
    88  func And8(ptr *uint8, val uint8)
    89  
    90  //go:noescape
    91  func Or8(ptr *uint8, val uint8)
    92  
    93  // NOTE: Do not add atomicxor8 (XOR is not idempotent).
    94  
    95  //go:noescape
    96  func And(ptr *uint32, val uint32)
    97  
    98  //go:noescape
    99  func Or(ptr *uint32, val uint32)
   100  
   101  //go:noescape
   102  func Xadd(ptr *uint32, delta int32) uint32
   103  
   104  //go:noescape
   105  func Xadd64(ptr *uint64, delta int64) uint64
   106  
   107  //go:noescape
   108  func Xadduintptr(ptr *uintptr, delta uintptr) uintptr
   109  
   110  //go:noescape
   111  func Xchg(ptr *uint32, new uint32) uint32
   112  
   113  //go:noescape
   114  func Xchg64(ptr *uint64, new uint64) uint64
   115  
   116  //go:noescape
   117  func Xchguintptr(ptr *uintptr, new uintptr) uintptr
   118  
   119  //go:noescape
   120  func Cas64(ptr *uint64, old, new uint64) bool
   121  
   122  //go:noescape
   123  func CasRel(ptr *uint32, old, new uint32) bool