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
|
// Copyright 2020 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
package ld
import (
"cmd/link/internal/sym"
)
// Temporary dumping around for sym.Symbol version of helper
// functions in elf.go, still being used for some archs/oses.
// FIXME: get rid of this file when dodata() is completely
// converted and the sym.Symbol functions are not needed.
func elfsetstring(s *sym.Symbol, str string, off int) {
if nelfstr >= len(elfstr) {
Errorf(s, "too many elf strings")
errorexit()
}
elfstr[nelfstr].s = str
elfstr[nelfstr].off = off
nelfstr++
}
func elfrelocsect2(ctxt *Link, sect *sym.Section, syms []*sym.Symbol) {
// If main section is SHT_NOBITS, nothing to relocate.
// Also nothing to relocate in .shstrtab.
if sect.Vaddr >= sect.Seg.Vaddr+sect.Seg.Filelen {
return
}
if sect.Name == ".shstrtab" {
return
}
sect.Reloff = uint64(ctxt.Out.Offset())
for i, s := range syms {
if !s.Attr.Reachable() {
continue
}
if uint64(s.Value) >= sect.Vaddr {
syms = syms[i:]
break
}
}
eaddr := int32(sect.Vaddr + sect.Length)
for _, s := range syms {
if !s.Attr.Reachable() {
continue
}
if s.Value >= int64(eaddr) {
break
}
for ri := range s.R {
r := &s.R[ri]
if r.Done {
continue
}
if r.Xsym == nil {
Errorf(s, "missing xsym in relocation %#v %#v", r.Sym.Name, s)
continue
}
esr := ElfSymForReloc(ctxt, r.Xsym)
if esr == 0 {
Errorf(s, "reloc %d (%s) to non-elf symbol %s (outer=%s) %d (%s)", r.Type, sym.RelocName(ctxt.Arch, r.Type), r.Sym.Name, r.Xsym.Name, r.Sym.Type, r.Sym.Type)
}
if !r.Xsym.Attr.Reachable() {
Errorf(s, "unreachable reloc %d (%s) target %v", r.Type, sym.RelocName(ctxt.Arch, r.Type), r.Xsym.Name)
}
if !thearch.Elfreloc1(ctxt, r, int64(uint64(s.Value+int64(r.Off))-sect.Vaddr)) {
Errorf(s, "unsupported obj reloc %d (%s)/%d to %s", r.Type, sym.RelocName(ctxt.Arch, r.Type), r.Siz, r.Sym.Name)
}
}
}
sect.Rellen = uint64(ctxt.Out.Offset()) - sect.Reloff
}
|
