1 // Copyright 2013 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 // This file defines flags attached to various functions
6 // and data objects. The compilers, assemblers, and linker must
7 // all agree on these values.
8 9 package obj
10 11 const (
12 // Don't profile the marked routine.
13 //
14 // Deprecated: Not implemented, do not use.
15 NOPROF = 1
16 17 // It is ok for the linker to get multiple of these symbols. It will
18 // pick one of the duplicates to use.
19 DUPOK = 2
20 21 // Don't insert stack check preamble.
22 NOSPLIT = 4
23 24 // Put this data in a read-only section.
25 RODATA = 8
26 27 // This data contains no pointers.
28 NOPTR = 16
29 30 // This is a wrapper function and should not count as disabling 'recover'.
31 WRAPPER = 32
32 33 // This function uses its incoming context register.
34 NEEDCTXT = 64
35 36 // When passed to ggloblsym, causes Local to be set to true on the LSym it creates.
37 LOCAL = 128
38 39 // Allocate a word of thread local storage and store the offset from the
40 // thread local base to the thread local storage in this variable.
41 TLSBSS = 256
42 43 // Do not insert instructions to allocate a stack frame for this function.
44 // Only valid on functions that declare a frame size of 0.
45 // TODO(mwhudson): only implemented for ppc64x at present.
46 NOFRAME = 512
47 48 // Function can call reflect.Type.Method or reflect.Type.MethodByName.
49 REFLECTMETHOD = 1024
50 51 // Function is the top of the call stack. Call stack unwinders should stop
52 // at this function.
53 TOPFRAME = 2048
54 )
55