netbsd.cpp revision 1.2 1 1.2 kiyohara /* $NetBSD: netbsd.cpp,v 1.2 2013/06/20 13:36:48 kiyohara Exp $ */
2 1.1 kiyohara /*
3 1.1 kiyohara * Copyright (c) 2012 KIYOHARA Takashi
4 1.1 kiyohara * All rights reserved.
5 1.1 kiyohara *
6 1.1 kiyohara * Redistribution and use in source and binary forms, with or without
7 1.1 kiyohara * modification, are permitted provided that the following conditions
8 1.1 kiyohara * are met:
9 1.1 kiyohara * 1. Redistributions of source code must retain the above copyright
10 1.1 kiyohara * notice, this list of conditions and the following disclaimer.
11 1.1 kiyohara * 2. Redistributions in binary form must reproduce the above copyright
12 1.1 kiyohara * notice, this list of conditions and the following disclaimer in the
13 1.1 kiyohara * documentation and/or other materials provided with the distribution.
14 1.1 kiyohara *
15 1.1 kiyohara * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16 1.1 kiyohara * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
17 1.1 kiyohara * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
18 1.1 kiyohara * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT,
19 1.1 kiyohara * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
20 1.1 kiyohara * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
21 1.1 kiyohara * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22 1.1 kiyohara * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
23 1.1 kiyohara * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
24 1.1 kiyohara * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
25 1.1 kiyohara * POSSIBILITY OF SUCH DAMAGE.
26 1.1 kiyohara */
27 1.1 kiyohara #include <e32cons.h>
28 1.1 kiyohara #include <e32std.h>
29 1.1 kiyohara #include <f32file.h>
30 1.1 kiyohara
31 1.1 kiyohara #include "e32boot.h"
32 1.1 kiyohara #include "elf.h"
33 1.1 kiyohara #include "netbsd.h"
34 1.1 kiyohara
35 1.1 kiyohara
36 1.1 kiyohara NetBSD *
37 1.1 kiyohara NetBSD::New(const TDesC &aFilename)
38 1.1 kiyohara {
39 1.1 kiyohara NetBSD *netbsd = NULL;
40 1.1 kiyohara RFs fsSession;
41 1.1 kiyohara RFile file;
42 1.1 kiyohara TInt size;
43 1.1 kiyohara union {
44 1.1 kiyohara Elf32_Ehdr elf;
45 1.1 kiyohara } hdr;
46 1.1 kiyohara
47 1.1 kiyohara /* Connect to FileServer Session */
48 1.1 kiyohara User::LeaveIfError(fsSession.Connect());
49 1.1 kiyohara
50 1.1 kiyohara User::LeaveIfError(file.Open(fsSession, aFilename, EFileRead));
51 1.1 kiyohara User::LeaveIfError(file.Size(size));
52 1.1 kiyohara
53 1.1 kiyohara TPtr hdrBuf((TUint8 *)&hdr, sizeof(hdr));
54 1.1 kiyohara User::LeaveIfError(file.Read(hdrBuf));
55 1.1 kiyohara /* Currently support is ELF only. */
56 1.1 kiyohara if (Mem::Compare((TUint8 *)hdr.elf.e_ident, SELFMAG,
57 1.1 kiyohara (TUint8 *)ELFMAG, SELFMAG) == 0) {
58 1.1 kiyohara netbsd = new (ELeave) ELF(size);
59 1.1 kiyohara } else
60 1.1 kiyohara User::Leave(KErrNotSupported);
61 1.1 kiyohara TInt pos = 0;
62 1.1 kiyohara User::LeaveIfError(file.Seek(ESeekStart, pos));
63 1.1 kiyohara
64 1.1 kiyohara TPtr fileBuf(netbsd->Buffer, size);
65 1.1 kiyohara User::LeaveIfError(file.Read(fileBuf));
66 1.1 kiyohara if (fileBuf.Length() != size)
67 1.1 kiyohara User::Leave(KErrNotFound);
68 1.1 kiyohara file.Close();
69 1.1 kiyohara
70 1.1 kiyohara /* Close FileServer Session */
71 1.1 kiyohara fsSession.Close();
72 1.1 kiyohara
73 1.1 kiyohara netbsd->LoadDescriptor =
74 1.1 kiyohara (struct loaddesc *)PAGE_ALIGN(User::AllocL(ALIGN_SAFE_PAGE_SIZE));
75 1.1 kiyohara
76 1.1 kiyohara return netbsd;
77 1.1 kiyohara }
78 1.1 kiyohara
79 1.2 kiyohara NetBSD *
80 1.2 kiyohara NetBSD::New(const TDesC &aFilename, const TDesC &aArgs)
81 1.2 kiyohara {
82 1.2 kiyohara NetBSD *netbsd = New(aFilename);
83 1.2 kiyohara
84 1.2 kiyohara netbsd->Args = &aArgs;
85 1.2 kiyohara
86 1.2 kiyohara return netbsd;
87 1.2 kiyohara }
88 1.2 kiyohara
89 1.1 kiyohara
90 1.1 kiyohara void
91 1.1 kiyohara ELF::ParseHeader(void)
92 1.1 kiyohara {
93 1.1 kiyohara struct loaddesc *loaddesc = LoadDescriptor;
94 1.1 kiyohara Elf32_Ehdr ehdr;
95 1.1 kiyohara Elf32_Phdr *phdr = NULL;
96 1.1 kiyohara int PhdrSize, i;
97 1.1 kiyohara
98 1.1 kiyohara Mem::Copy(&ehdr, Buffer, sizeof(ehdr));
99 1.1 kiyohara PhdrSize = sizeof(Elf32_Phdr) * ehdr.e_phnum;
100 1.1 kiyohara phdr = (Elf32_Phdr *) new (ELeave) TUint8[PhdrSize];
101 1.1 kiyohara Mem::Copy(phdr, Buffer + ehdr.e_phoff, PhdrSize);
102 1.1 kiyohara
103 1.1 kiyohara for (i = 0; i < ehdr.e_phnum; i++) {
104 1.1 kiyohara if (phdr[i].p_type != PT_LOAD ||
105 1.1 kiyohara (phdr[i].p_flags & (PF_W | PF_X)) == 0)
106 1.1 kiyohara continue;
107 1.1 kiyohara
108 1.1 kiyohara loaddesc->addr = VTOP(phdr[i].p_vaddr);
109 1.1 kiyohara loaddesc->offset = phdr[i].p_offset;
110 1.1 kiyohara loaddesc->size = phdr[i].p_filesz;
111 1.1 kiyohara loaddesc++;
112 1.1 kiyohara }
113 1.1 kiyohara /* Terminate loaddesc. */
114 1.1 kiyohara loaddesc->addr = 0xffffffff;
115 1.1 kiyohara loaddesc->offset = 0xffffffff;
116 1.1 kiyohara loaddesc->size = 0xffffffff;
117 1.1 kiyohara
118 1.1 kiyohara EntryPoint = ehdr.e_entry;
119 1.1 kiyohara }
120