github.com/ice-blockchain/go/src@v0.0.0-20240403114104-1564d284e521/runtime/internal/atomic/atomic_amd64.go (about)

     1  // Copyright 2009 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 Load64(ptr *uint64) uint64 {
    30  	return *ptr
    31  }
    32  
    33  //go:nosplit
    34  //go:noinline
    35  func LoadAcq(ptr *uint32) uint32 {
    36  	return *ptr
    37  }
    38  
    39  //go:nosplit
    40  //go:noinline
    41  func LoadAcq64(ptr *uint64) uint64 {
    42  	return *ptr
    43  }
    44  
    45  //go:nosplit
    46  //go:noinline
    47  func LoadAcquintptr(ptr *uintptr) uintptr {
    48  	return *ptr
    49  }
    50  
    51  //go:noescape
    52  func Xadd(ptr *uint32, delta int32) uint32
    53  
    54  //go:noescape
    55  func Xadd64(ptr *uint64, delta int64) uint64
    56  
    57  //go:noescape
    58  func Xadduintptr(ptr *uintptr, delta uintptr) uintptr
    59  
    60  //go:noescape
    61  func Xchg(ptr *uint32, new uint32) uint32
    62  
    63  //go:noescape
    64  func Xchg64(ptr *uint64, new uint64) uint64
    65  
    66  //go:noescape
    67  func Xchguintptr(ptr *uintptr, new uintptr) uintptr
    68  
    69  //go:nosplit
    70  //go:noinline
    71  func Load8(ptr *uint8) uint8 {
    72  	return *ptr
    73  }
    74  
    75  //go:noescape
    76  func And8(ptr *uint8, val uint8)
    77  
    78  //go:noescape
    79  func Or8(ptr *uint8, val uint8)
    80  
    81  //go:noescape
    82  func And(ptr *uint32, val uint32)
    83  
    84  //go:noescape
    85  func Or(ptr *uint32, val uint32)
    86  
    87  //go:noescape
    88  func And32(ptr *uint32, val uint32) uint32
    89  
    90  //go:noescape
    91  func Or32(ptr *uint32, val uint32) uint32
    92  
    93  //go:noescape
    94  func And64(ptr *uint64, val uint64) uint64
    95  
    96  //go:noescape
    97  func Or64(ptr *uint64, val uint64) uint64
    98  
    99  //go:noescape
   100  func Anduintptr(ptr *uintptr, val uintptr) uintptr
   101  
   102  //go:noescape
   103  func Oruintptr(ptr *uintptr, val uintptr) uintptr
   104  
   105  // NOTE: Do not add atomicxor8 (XOR is not idempotent).
   106  
   107  //go:noescape
   108  func Cas64(ptr *uint64, old, new uint64) bool
   109  
   110  //go:noescape
   111  func CasRel(ptr *uint32, old, new uint32) bool
   112  
   113  //go:noescape
   114  func Store(ptr *uint32, val uint32)
   115  
   116  //go:noescape
   117  func Store8(ptr *uint8, val uint8)
   118  
   119  //go:noescape
   120  func Store64(ptr *uint64, val uint64)
   121  
   122  //go:noescape
   123  func StoreRel(ptr *uint32, val uint32)
   124  
   125  //go:noescape
   126  func StoreRel64(ptr *uint64, val uint64)
   127  
   128  //go:noescape
   129  func StoreReluintptr(ptr *uintptr, val uintptr)
   130  
   131  // StorepNoWB performs *ptr = val atomically and without a write
   132  // barrier.
   133  //
   134  // NO go:noescape annotation; see atomic_pointer.go.
   135  func StorepNoWB(ptr unsafe.Pointer, val unsafe.Pointer)