/
sym.go
134 lines (120 loc) · 3.64 KB
/
sym.go
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
// Derived from Inferno utils/6l/obj.c and utils/6l/span.c
// http://code.google.com/p/inferno-os/source/browse/utils/6l/obj.c
// http://code.google.com/p/inferno-os/source/browse/utils/6l/span.c
//
// Copyright © 1994-1999 Lucent Technologies Inc. All rights reserved.
// Portions Copyright © 1995-1997 C H Forsyth (forsyth@terzarima.net)
// Portions Copyright © 1997-1999 Vita Nuova Limited
// Portions Copyright © 2000-2007 Vita Nuova Holdings Limited (www.vitanuova.com)
// Portions Copyright © 2004,2006 Bruce Ellis
// Portions Copyright © 2005-2007 C H Forsyth (forsyth@terzarima.net)
// Revisions Copyright © 2000-2007 Lucent Technologies Inc. and others
// Portions Copyright © 2009 The Go Authors. All rights reserved.
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.
package obj
import (
"github.com/glycerine/golang-repl/cmd/avail/sys"
"log"
"os"
"path/filepath"
"strconv"
)
var headers = []struct {
name string
val int
}{
{"darwin", Hdarwin},
{"dragonfly", Hdragonfly},
{"freebsd", Hfreebsd},
{"linux", Hlinux},
{"android", Hlinux}, // must be after "linux" entry or else headstr(Hlinux) == "android"
{"nacl", Hnacl},
{"netbsd", Hnetbsd},
{"openbsd", Hopenbsd},
{"plan9", Hplan9},
{"solaris", Hsolaris},
{"windows", Hwindows},
{"windowsgui", Hwindows},
}
func headtype(name string) int {
for i := 0; i < len(headers); i++ {
if name == headers[i].name {
return headers[i].val
}
}
return -1
}
func Headstr(v int) string {
for i := 0; i < len(headers); i++ {
if v == headers[i].val {
return headers[i].name
}
}
return strconv.Itoa(v)
}
func Linknew(arch *LinkArch) *Link {
ctxt := new(Link)
ctxt.Hash = make(map[SymVer]*LSym)
ctxt.Arch = arch
ctxt.Version = HistVersion
ctxt.Goroot = Getgoroot()
ctxt.Goroot_final = os.Getenv("GOROOT_FINAL")
var buf string
buf, _ = os.Getwd()
if buf == "" {
buf = "/???"
}
buf = filepath.ToSlash(buf)
ctxt.Pathname = buf
ctxt.LineHist.GOROOT = ctxt.Goroot
ctxt.LineHist.GOROOT_FINAL = ctxt.Goroot_final
ctxt.LineHist.Dir = ctxt.Pathname
ctxt.Headtype = headtype(Getgoos())
if ctxt.Headtype < 0 {
log.Fatalf("unknown goos %s", Getgoos())
}
// On arm, record goarm.
if ctxt.Arch.Family == sys.ARM {
ctxt.Goarm = Getgoarm()
}
ctxt.Flag_optimize = true
ctxt.Framepointer_enabled = Framepointer_enabled(Getgoos(), arch.Name)
return ctxt
}
func Linklookup(ctxt *Link, name string, v int) *LSym {
s := ctxt.Hash[SymVer{name, v}]
if s != nil {
return s
}
s = &LSym{
Name: name,
Type: 0,
Version: int16(v),
Size: 0,
}
ctxt.Hash[SymVer{name, v}] = s
return s
}
func Linksymfmt(s *LSym) string {
if s == nil {
return "<nil>"
}
return s.Name
}