u64s are bigger than I thought!

src/flag.rs

@@ -60,20 +60,20 @@ pub const PHYSMAP_WRITE: usize = 0x0000_0001;
 pub const PHYSMAP_WRITE_COMBINE: usize = 0x0000_0002;
 pub const PHYSMAP_NO_CACHE: usize = 0x0000_0004;
 
-// The top 32 bits of PTRACE_* are reserved, for now
+// The top 48 bits of PTRACE_* are reserved, for now
 
-pub const PTRACE_STOP_PRE_SYSCALL: u64 = 0x0000_0001;
-pub const PTRACE_STOP_POST_SYSCALL: u64 = 0x0000_0002;
-pub const PTRACE_STOP_SINGLESTEP: u64 = 0x0000_0004;
-pub const PTRACE_STOP_SIGNAL: u64 = 0x0000_0008;
-pub const PTRACE_STOP_MASK: u64 = 0x0000_00FF;
+pub const PTRACE_STOP_PRE_SYSCALL: u64 = 0x0000_0000_0000_0001;
+pub const PTRACE_STOP_POST_SYSCALL: u64 = 0x0000_0000_0000_0002;
+pub const PTRACE_STOP_SINGLESTEP: u64 = 0x0000_0000_0000_0004;
+pub const PTRACE_STOP_SIGNAL: u64 = 0x0000_0000_0000_0008;
+pub const PTRACE_STOP_MASK: u64 = 0x0000_0000_0000_00FF;
 
-pub const PTRACE_EVENT_CLONE: u64 = 0x0000_0100;
-pub const PTRACE_EVENT_MASK: u64 = 0x0000_0F00;
+pub const PTRACE_EVENT_CLONE: u64 = 0x0000_0000_0000_0100;
+pub const PTRACE_EVENT_MASK: u64 = 0x0000_0000_0000_0F00;
 
-pub const PTRACE_FLAG_SYSEMU: u64 = 0x0000_1000;
-pub const PTRACE_FLAG_WAIT: u64 = 0x0000_2000;
-pub const PTRACE_FLAG_MASK: u64 = 0x0000_F000;
+pub const PTRACE_FLAG_SYSEMU: u64 = 0x0000_0000_0000_1000;
+pub const PTRACE_FLAG_WAIT: u64 = 0x0000_0000_0000_2000;
+pub const PTRACE_FLAG_MASK: u64 = 0x0000_0000_0000_F000;
 
 pub const PROT_NONE: usize = 0x0000_0000;
 pub const PROT_EXEC: usize = 0x0001_0000;