fake_image_linux_arm64.go

Documentation: github.com/chaos-mesh/chaos-mesh/pkg/time

     1  // Copyright 2021 Chaos Mesh Authors.
     2  //
     3  // Licensed under the Apache License, Version 2.0 (the "License");
     4  // you may not use this file except in compliance with the License.
     5  // You may obtain a copy of the License at
     6  //
     7  // http://www.apache.org/licenses/LICENSE-2.0
     8  //
     9  // Unless required by applicable law or agreed to in writing, software
    10  // distributed under the License is distributed on an "AS IS" BASIS,
    11  // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    12  // See the License for the specific language governing permissions and
    13  // limitations under the License.
    14  //
    15  
    16  package time
    17  
    18  import (
    19  	"github.com/pkg/errors"
    20  
    21  	"github.com/chaos-mesh/chaos-mesh/pkg/mapreader"
    22  	"github.com/chaos-mesh/chaos-mesh/pkg/ptrace"
    23  )
    24  
    25  // one variable will use two pointers place
    26  const varLength = 16
    27  
    28  func (it *FakeImage) SetVarUint64(program *ptrace.TracedProgram, entry *mapreader.Entry, symbol string, value uint64) error {
    29  	if offset, ok := it.offset[symbol]; ok {
    30  		variableOffset := entry.StartAddress + uint64(offset) + 8
    31  
    32  		err := program.WriteUint64ToAddr(entry.StartAddress+uint64(offset), variableOffset)
    33  		if err != nil {
    34  			return err
    35  		}
    36  
    37  		err = program.WriteUint64ToAddr(variableOffset, value)
    38  		return err
    39  	}
    40  
    41  	return errors.New("symbol not found")
    42  }
    43