f3a191cd73
Implement debugging function for 386 on linux with reference to AMD64. There are a few remaining problems that need to be solved in another time. 1. The stacktrace of cgo are not exactly as expected. 2. Not implement `core` for now. 3. Not implement `call` for now. Can't not find `runtime·debugCallV1` or similar function in $GOROOT/src/runtime/asm_386.s. Update #20
39 lines
1.2 KiB
Go
39 lines
1.2 KiB
Go
// +build linux,amd64 linux,arm64
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package native
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import (
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"syscall"
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"unsafe"
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sys "golang.org/x/sys/unix"
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)
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// ProcessVmRead calls process_vm_readv
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func ProcessVmRead(tid int, addr uintptr, data []byte) (int, error) {
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len_iov := uint64(len(data))
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local_iov := sys.Iovec{Base: &data[0], Len: len_iov}
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remote_iov := sys.Iovec{Base: (*byte)(unsafe.Pointer(addr)), Len: len_iov}
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p_local := uintptr(unsafe.Pointer(&local_iov))
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p_remote := uintptr(unsafe.Pointer(&remote_iov))
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n, _, err := syscall.Syscall6(sys.SYS_PROCESS_VM_READV, uintptr(tid), p_local, 1, p_remote, 1, 0)
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if err != syscall.Errno(0) {
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return 0, err
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}
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return int(n), nil
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}
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// ProcessVmWrite calls process_vm_writev
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func ProcessVmWrite(tid int, addr uintptr, data []byte) (int, error) {
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len_iov := uint64(len(data))
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local_iov := sys.Iovec{Base: &data[0], Len: len_iov}
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remote_iov := sys.Iovec{Base: (*byte)(unsafe.Pointer(addr)), Len: len_iov}
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p_local := uintptr(unsafe.Pointer(&local_iov))
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p_remote := uintptr(unsafe.Pointer(&remote_iov))
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n, _, err := syscall.Syscall6(sys.SYS_PROCESS_VM_WRITEV, uintptr(tid), p_local, 1, p_remote, 1, 0)
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if err != syscall.Errno(0) {
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return 0, err
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}
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return int(n), nil
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}
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