object_file.cc (3930:f96f7e258255) object_file.cc (5070:3d6a1e37b944)
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 <list>
33#include <string>
34
35#include <sys/types.h>
36#include <sys/mman.h>
37#include <fcntl.h>
38#include <stdio.h>
39#include <unistd.h>
40
41#include "base/cprintf.hh"
42#include "base/loader/object_file.hh"
43#include "base/loader/symtab.hh"
44
45#include "base/loader/ecoff_object.hh"
46#include "base/loader/aout_object.hh"
47#include "base/loader/elf_object.hh"
48#include "base/loader/raw_object.hh"
49
50#include "mem/translating_port.hh"
51
52using namespace std;
53
54ObjectFile::ObjectFile(const string &_filename, int _fd,
55 size_t _len, uint8_t *_data,
56 Arch _arch, OpSys _opSys)
57 : filename(_filename), descriptor(_fd), fileData(_data), len(_len),
58 arch(_arch), opSys(_opSys)
59{
60}
61
62
63ObjectFile::~ObjectFile()
64{
65 close();
66}
67
68
69bool
70ObjectFile::loadSection(Section *sec, Port *memPort, Addr addrMask)
71{
72 if (sec->size != 0) {
73 Addr addr = sec->baseAddr & addrMask;
74 if (sec->fileImage) {
75 memPort->writeBlob(addr, sec->fileImage, sec->size);
76 }
77 else {
78 // no image: must be bss
79 memPort->memsetBlob(addr, 0, sec->size);
80 }
81 }
82 return true;
83}
84
85
86bool
87ObjectFile::loadSections(Port *memPort, Addr addrMask)
88{
89 return (loadSection(&text, memPort, addrMask)
90 && loadSection(&data, memPort, addrMask)
91 && loadSection(&bss, memPort, addrMask));
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 size_t len = (size_t)lseek(fd, 0, SEEK_END);
121
122 // mmap the whole shebang
123 uint8_t *fileData =
124 (uint8_t *)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, 0);
125 if (fileData == MAP_FAILED) {
126 close(fd);
127 return NULL;
128 }
129
130 ObjectFile *fileObj = NULL;
131
132 // figure out what we have here
133 if ((fileObj = EcoffObject::tryFile(fname, fd, len, fileData)) != NULL) {
134 return fileObj;
135 }
136
137 if ((fileObj = AoutObject::tryFile(fname, fd, len, fileData)) != NULL) {
138 return fileObj;
139 }
140
141 if ((fileObj = ElfObject::tryFile(fname, fd, len, fileData)) != NULL) {
142 return fileObj;
143 }
144
145 if (raw)
146 return RawObject::tryFile(fname, fd, len, fileData);
147
148 // don't know what it is
149 close(fd);
150 munmap((char*)fileData, len);
151 return NULL;
152}
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 <list>
33#include <string>
34
35#include <sys/types.h>
36#include <sys/mman.h>
37#include <fcntl.h>
38#include <stdio.h>
39#include <unistd.h>
40
41#include "base/cprintf.hh"
42#include "base/loader/object_file.hh"
43#include "base/loader/symtab.hh"
44
45#include "base/loader/ecoff_object.hh"
46#include "base/loader/aout_object.hh"
47#include "base/loader/elf_object.hh"
48#include "base/loader/raw_object.hh"
49
50#include "mem/translating_port.hh"
51
52using namespace std;
53
54ObjectFile::ObjectFile(const string &_filename, int _fd,
55 size_t _len, uint8_t *_data,
56 Arch _arch, OpSys _opSys)
57 : filename(_filename), descriptor(_fd), fileData(_data), len(_len),
58 arch(_arch), opSys(_opSys)
59{
60}
61
62
63ObjectFile::~ObjectFile()
64{
65 close();
66}
67
68
69bool
70ObjectFile::loadSection(Section *sec, Port *memPort, Addr addrMask)
71{
72 if (sec->size != 0) {
73 Addr addr = sec->baseAddr & addrMask;
74 if (sec->fileImage) {
75 memPort->writeBlob(addr, sec->fileImage, sec->size);
76 }
77 else {
78 // no image: must be bss
79 memPort->memsetBlob(addr, 0, sec->size);
80 }
81 }
82 return true;
83}
84
85
86bool
87ObjectFile::loadSections(Port *memPort, Addr addrMask)
88{
89 return (loadSection(&text, memPort, addrMask)
90 && loadSection(&data, memPort, addrMask)
91 && loadSection(&bss, memPort, addrMask));
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 size_t len = (size_t)lseek(fd, 0, SEEK_END);
121
122 // mmap the whole shebang
123 uint8_t *fileData =
124 (uint8_t *)mmap(NULL, len, PROT_READ, MAP_SHARED, fd, 0);
125 if (fileData == MAP_FAILED) {
126 close(fd);
127 return NULL;
128 }
129
130 ObjectFile *fileObj = NULL;
131
132 // figure out what we have here
133 if ((fileObj = EcoffObject::tryFile(fname, fd, len, fileData)) != NULL) {
134 return fileObj;
135 }
136
137 if ((fileObj = AoutObject::tryFile(fname, fd, len, fileData)) != NULL) {
138 return fileObj;
139 }
140
141 if ((fileObj = ElfObject::tryFile(fname, fd, len, fileData)) != NULL) {
142 return fileObj;
143 }
144
145 if (raw)
146 return RawObject::tryFile(fname, fd, len, fileData);
147
148 // don't know what it is
149 close(fd);
150 munmap((char*)fileData, len);
151 return NULL;
152}
153
154bool
155ObjectFile::isDynamic()
156{
157 return false;
158}