1/*
2 * Copyright (c) 2002-2004 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 * Steve Reinhardt
30 */
31
32#include <sys/mman.h>
33#include <sys/types.h>
34#include <fcntl.h>
35#include <unistd.h>
36
37#include <cstdio>
38#include <list>
39#include <string>
40
41#include "base/loader/aout_object.hh"
42#include "base/loader/dtb_object.hh"
43#include "base/loader/ecoff_object.hh"
44#include "base/loader/elf_object.hh"
45#include "base/loader/object_file.hh"
46#include "base/loader/raw_object.hh"
47#include "base/loader/symtab.hh"
48#include "base/cprintf.hh"
49#include "mem/port_proxy.hh"
50
51using namespace std;
52
| 1/*
2 * Copyright (c) 2002-2004 The Regents of The University of Michigan
3 * All rights reserved.
4 *
5 * Redistribution and use in source and binary forms, with or without
6 * modification, are permitted provided that the following conditions are
7 * met: redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer;
9 * redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution;
12 * neither the name of the copyright holders nor the names of its
13 * contributors may be used to endorse or promote products derived from
14 * this software without specific prior written permission.
15 *
16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27 *
28 * Authors: Nathan Binkert
29 * Steve Reinhardt
30 */
31
32#include <sys/mman.h>
33#include <sys/types.h>
34#include <fcntl.h>
35#include <unistd.h>
36
37#include <cstdio>
38#include <list>
39#include <string>
40
41#include "base/loader/aout_object.hh"
42#include "base/loader/dtb_object.hh"
43#include "base/loader/ecoff_object.hh"
44#include "base/loader/elf_object.hh"
45#include "base/loader/object_file.hh"
46#include "base/loader/raw_object.hh"
47#include "base/loader/symtab.hh"
48#include "base/cprintf.hh"
49#include "mem/port_proxy.hh"
50
51using namespace std;
52
|
53ObjectFile::ObjectFile(const string &_filename, int _fd,
| 53ObjectFile::ObjectFile(const string &_filename,
|
54 size_t _len, uint8_t *_data,
55 Arch _arch, OpSys _opSys)
| 54 size_t _len, uint8_t *_data,
55 Arch _arch, OpSys _opSys)
|
56 : filename(_filename), descriptor(_fd), fileData(_data), len(_len),
| 56 : filename(_filename), fileData(_data), len(_len),
|
57 arch(_arch), opSys(_opSys), entry(0), globalPtr(0),
58 text{0, nullptr, 0}, data{0, nullptr, 0}, bss{0, nullptr, 0}
59{
60}
61
62
63ObjectFile::~ObjectFile()
64{
65 close();
66}
67
68
69bool
70ObjectFile::loadSection(Section *sec, PortProxy& memProxy, Addr addrMask, Addr offset)
71{
72 if (sec->size != 0) {
73 Addr addr = (sec->baseAddr & addrMask) + offset;
74 if (sec->fileImage) {
75 memProxy.writeBlob(addr, sec->fileImage, sec->size);
76 }
77 else {
78 // no image: must be bss
79 memProxy.memsetBlob(addr, 0, sec->size);
80 }
81 }
82 return true;
83}
84
85
86bool
87ObjectFile::loadSections(PortProxy& memProxy, Addr addrMask, Addr offset)
88{
89 return (loadSection(&text, memProxy, addrMask, offset)
90 && loadSection(&data, memProxy, addrMask, offset)
91 && loadSection(&bss, memProxy, addrMask, offset));
92}
93
94
95void
96ObjectFile::close()
97{
| 57 arch(_arch), opSys(_opSys), entry(0), globalPtr(0),
58 text{0, nullptr, 0}, data{0, nullptr, 0}, bss{0, nullptr, 0}
59{
60}
61
62
63ObjectFile::~ObjectFile()
64{
65 close();
66}
67
68
69bool
70ObjectFile::loadSection(Section *sec, PortProxy& memProxy, Addr addrMask, Addr offset)
71{
72 if (sec->size != 0) {
73 Addr addr = (sec->baseAddr & addrMask) + offset;
74 if (sec->fileImage) {
75 memProxy.writeBlob(addr, sec->fileImage, sec->size);
76 }
77 else {
78 // no image: must be bss
79 memProxy.memsetBlob(addr, 0, sec->size);
80 }
81 }
82 return true;
83}
84
85
86bool
87ObjectFile::loadSections(PortProxy& memProxy, Addr addrMask, Addr offset)
88{
89 return (loadSection(&text, memProxy, addrMask, offset)
90 && loadSection(&data, memProxy, addrMask, offset)
91 && loadSection(&bss, memProxy, addrMask, offset));
92}
93
94
95void
96ObjectFile::close()
97{
|
98 if (descriptor >= 0) {
99 ::close(descriptor);
100 descriptor = -1;
101 }
102
| |
103 if (fileData) {
104 ::munmap((char*)fileData, len);
105 fileData = NULL;
106 }
107}
108
109
110ObjectFile *
111createObjectFile(const string &fname, bool raw)
112{
113 // open the file
114 int fd = open(fname.c_str(), O_RDONLY);
115 if (fd < 0) {
116 return NULL;
117 }
118
119 // find the length of the file by seeking to the end
120 off_t off = lseek(fd, 0, SEEK_END);
121 fatal_if(off < 0, "Failed to determine size of object file %s\n", fname);
122 size_t len = static_cast<size_t>(off);
123
124 // mmap the whole shebang
125 uint8_t *fileData =
126 (uint8_t *)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, 0);
| 98 if (fileData) {
99 ::munmap((char*)fileData, len);
100 fileData = NULL;
101 }
102}
103
104
105ObjectFile *
106createObjectFile(const string &fname, bool raw)
107{
108 // open the file
109 int fd = open(fname.c_str(), O_RDONLY);
110 if (fd < 0) {
111 return NULL;
112 }
113
114 // find the length of the file by seeking to the end
115 off_t off = lseek(fd, 0, SEEK_END);
116 fatal_if(off < 0, "Failed to determine size of object file %s\n", fname);
117 size_t len = static_cast<size_t>(off);
118
119 // mmap the whole shebang
120 uint8_t *fileData =
121 (uint8_t *)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, 0);
|
| 122 close(fd);
|
127 if (fileData == MAP_FAILED) {
| 123 if (fileData == MAP_FAILED) {
|
128 close(fd);
| |
129 return NULL;
130 }
131
132 ObjectFile *fileObj = NULL;
133
134 // figure out what we have here
| 124 return NULL;
125 }
126
127 ObjectFile *fileObj = NULL;
128
129 // figure out what we have here
|
135 if ((fileObj = EcoffObject::tryFile(fname, fd, len, fileData)) != NULL) {
| 130 if ((fileObj = ElfObject::tryFile(fname, len, fileData)) != NULL) {
|
136 return fileObj;
137 }
138
| 131 return fileObj;
132 }
133
|
139 if ((fileObj = AoutObject::tryFile(fname, fd, len, fileData)) != NULL) {
| 134 if ((fileObj = EcoffObject::tryFile(fname, len, fileData)) != NULL) {
|
140 return fileObj;
141 }
142
| 135 return fileObj;
136 }
137
|
143 if ((fileObj = ElfObject::tryFile(fname, fd, len, fileData)) != NULL) {
| 138 if ((fileObj = AoutObject::tryFile(fname, len, fileData)) != NULL) {
|
144 return fileObj;
145 }
146
| 139 return fileObj;
140 }
141
|
147 if ((fileObj = DtbObject::tryFile(fname, fd, len, fileData)) != NULL) {
| 142 if ((fileObj = DtbObject::tryFile(fname, len, fileData)) != NULL) {
|
148 return fileObj;
149 }
150
151 if (raw)
| 143 return fileObj;
144 }
145
146 if (raw)
|
152 return RawObject::tryFile(fname, fd, len, fileData);
| 147 return RawObject::tryFile(fname, len, fileData);
|
153
154 // don't know what it is
| 148
149 // don't know what it is
|
155 close(fd);
| |
156 munmap((char*)fileData, len);
157 return NULL;
158}
| 150 munmap((char*)fileData, len);
151 return NULL;
152}
|