export_debug_regabiargs_on_test.go

Documentation: runtime

     1  // Copyright 2021 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  //go:build amd64 && linux && goexperiment.regabiargs
     6  // +build amd64,linux,goexperiment.regabiargs
     7  
     8  package runtime
     9  
    10  import "internal/abi"
    11  
    12  // storeRegArgs sets up argument registers in the signal
    13  // context state from an abi.RegArgs.
    14  //
    15  // Both src and dst must be non-nil.
    16  func storeRegArgs(dst *sigcontext, src *abi.RegArgs) {
    17  	dst.rax = uint64(src.Ints[0])
    18  	dst.rbx = uint64(src.Ints[1])
    19  	dst.rcx = uint64(src.Ints[2])
    20  	dst.rdi = uint64(src.Ints[3])
    21  	dst.rsi = uint64(src.Ints[4])
    22  	dst.r8 = uint64(src.Ints[5])
    23  	dst.r9 = uint64(src.Ints[6])
    24  	dst.r10 = uint64(src.Ints[7])
    25  	dst.r11 = uint64(src.Ints[8])
    26  	for i := range src.Floats {
    27  		dst.fpstate._xmm[i].element[0] = uint32(src.Floats[i] >> 0)
    28  		dst.fpstate._xmm[i].element[1] = uint32(src.Floats[i] >> 32)
    29  	}
    30  }
    31  
    32  func loadRegArgs(dst *abi.RegArgs, src *sigcontext) {
    33  	dst.Ints[0] = uintptr(src.rax)
    34  	dst.Ints[1] = uintptr(src.rbx)
    35  	dst.Ints[2] = uintptr(src.rcx)
    36  	dst.Ints[3] = uintptr(src.rdi)
    37  	dst.Ints[4] = uintptr(src.rsi)
    38  	dst.Ints[5] = uintptr(src.r8)
    39  	dst.Ints[6] = uintptr(src.r9)
    40  	dst.Ints[7] = uintptr(src.r10)
    41  	dst.Ints[8] = uintptr(src.r11)
    42  	for i := range dst.Floats {
    43  		dst.Floats[i] = uint64(src.fpstate._xmm[i].element[0]) << 0
    44  		dst.Floats[i] |= uint64(src.fpstate._xmm[i].element[1]) << 32
    45  	}
    46  }
    47
View as plain text