src/sim/syscall_return.hh

37  * This class represents the return value from an emulated system call,
40  * On some platforms, the return value and errno are encoded in a
41  * single signed integer.  A value less than zero but greater than
42  * -4096 indicates an error, and the value is the negation of the
43  * errno value.  Otherwise, the call was successful and the integer is
44  * the return value.  (Large negative numbers are considered
49  * Other platforms use a more complex interface, returning a value and
64     /// value is expected, e.g., as the return value from a system
67         : value(v), retryFlag(false)
83         return (value >= 0 || value <= -4096);
89     /// The return value
93         return value;
96     /// The errno value
100         return -value;
103     /// The encoded value (as described above)
106         return value;
111     int64_t value;