netbsd.cpp revision 1.2.2.2
1 1.2.2.2 tls /* $NetBSD: netbsd.cpp,v 1.2.2.2 2013/06/23 06:20:03 tls Exp $ */ 2 1.2.2.2 tls /* 3 1.2.2.2 tls * Copyright (c) 2012 KIYOHARA Takashi 4 1.2.2.2 tls * All rights reserved. 5 1.2.2.2 tls * 6 1.2.2.2 tls * Redistribution and use in source and binary forms, with or without 7 1.2.2.2 tls * modification, are permitted provided that the following conditions 8 1.2.2.2 tls * are met: 9 1.2.2.2 tls * 1. Redistributions of source code must retain the above copyright 10 1.2.2.2 tls * notice, this list of conditions and the following disclaimer. 11 1.2.2.2 tls * 2. Redistributions in binary form must reproduce the above copyright 12 1.2.2.2 tls * notice, this list of conditions and the following disclaimer in the 13 1.2.2.2 tls * documentation and/or other materials provided with the distribution. 14 1.2.2.2 tls * 15 1.2.2.2 tls * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 1.2.2.2 tls * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 17 1.2.2.2 tls * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 18 1.2.2.2 tls * DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, 19 1.2.2.2 tls * INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 20 1.2.2.2 tls * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR 21 1.2.2.2 tls * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 22 1.2.2.2 tls * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, 23 1.2.2.2 tls * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN 24 1.2.2.2 tls * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 25 1.2.2.2 tls * POSSIBILITY OF SUCH DAMAGE. 26 1.2.2.2 tls */ 27 1.2.2.2 tls #include <e32cons.h> 28 1.2.2.2 tls #include <e32std.h> 29 1.2.2.2 tls #include <f32file.h> 30 1.2.2.2 tls 31 1.2.2.2 tls #include "e32boot.h" 32 1.2.2.2 tls #include "elf.h" 33 1.2.2.2 tls #include "netbsd.h" 34 1.2.2.2 tls 35 1.2.2.2 tls 36 1.2.2.2 tls NetBSD * 37 1.2.2.2 tls NetBSD::New(const TDesC &aFilename) 38 1.2.2.2 tls { 39 1.2.2.2 tls NetBSD *netbsd = NULL; 40 1.2.2.2 tls RFs fsSession; 41 1.2.2.2 tls RFile file; 42 1.2.2.2 tls TInt size; 43 1.2.2.2 tls union { 44 1.2.2.2 tls Elf32_Ehdr elf; 45 1.2.2.2 tls } hdr; 46 1.2.2.2 tls 47 1.2.2.2 tls /* Connect to FileServer Session */ 48 1.2.2.2 tls User::LeaveIfError(fsSession.Connect()); 49 1.2.2.2 tls 50 1.2.2.2 tls User::LeaveIfError(file.Open(fsSession, aFilename, EFileRead)); 51 1.2.2.2 tls User::LeaveIfError(file.Size(size)); 52 1.2.2.2 tls 53 1.2.2.2 tls TPtr hdrBuf((TUint8 *)&hdr, sizeof(hdr)); 54 1.2.2.2 tls User::LeaveIfError(file.Read(hdrBuf)); 55 1.2.2.2 tls /* Currently support is ELF only. */ 56 1.2.2.2 tls if (Mem::Compare((TUint8 *)hdr.elf.e_ident, SELFMAG, 57 1.2.2.2 tls (TUint8 *)ELFMAG, SELFMAG) == 0) { 58 1.2.2.2 tls netbsd = new (ELeave) ELF(size); 59 1.2.2.2 tls } else 60 1.2.2.2 tls User::Leave(KErrNotSupported); 61 1.2.2.2 tls TInt pos = 0; 62 1.2.2.2 tls User::LeaveIfError(file.Seek(ESeekStart, pos)); 63 1.2.2.2 tls 64 1.2.2.2 tls TPtr fileBuf(netbsd->Buffer, size); 65 1.2.2.2 tls User::LeaveIfError(file.Read(fileBuf)); 66 1.2.2.2 tls if (fileBuf.Length() != size) 67 1.2.2.2 tls User::Leave(KErrNotFound); 68 1.2.2.2 tls file.Close(); 69 1.2.2.2 tls 70 1.2.2.2 tls /* Close FileServer Session */ 71 1.2.2.2 tls fsSession.Close(); 72 1.2.2.2 tls 73 1.2.2.2 tls netbsd->LoadDescriptor = 74 1.2.2.2 tls (struct loaddesc *)PAGE_ALIGN(User::AllocL(ALIGN_SAFE_PAGE_SIZE)); 75 1.2.2.2 tls 76 1.2.2.2 tls return netbsd; 77 1.2.2.2 tls } 78 1.2.2.2 tls 79 1.2.2.2 tls NetBSD * 80 1.2.2.2 tls NetBSD::New(const TDesC &aFilename, const TDesC &aArgs) 81 1.2.2.2 tls { 82 1.2.2.2 tls NetBSD *netbsd = New(aFilename); 83 1.2.2.2 tls 84 1.2.2.2 tls netbsd->Args = &aArgs; 85 1.2.2.2 tls 86 1.2.2.2 tls return netbsd; 87 1.2.2.2 tls } 88 1.2.2.2 tls 89 1.2.2.2 tls 90 1.2.2.2 tls void 91 1.2.2.2 tls ELF::ParseHeader(void) 92 1.2.2.2 tls { 93 1.2.2.2 tls struct loaddesc *loaddesc = LoadDescriptor; 94 1.2.2.2 tls Elf32_Ehdr ehdr; 95 1.2.2.2 tls Elf32_Phdr *phdr = NULL; 96 1.2.2.2 tls int PhdrSize, i; 97 1.2.2.2 tls 98 1.2.2.2 tls Mem::Copy(&ehdr, Buffer, sizeof(ehdr)); 99 1.2.2.2 tls PhdrSize = sizeof(Elf32_Phdr) * ehdr.e_phnum; 100 1.2.2.2 tls phdr = (Elf32_Phdr *) new (ELeave) TUint8[PhdrSize]; 101 1.2.2.2 tls Mem::Copy(phdr, Buffer + ehdr.e_phoff, PhdrSize); 102 1.2.2.2 tls 103 1.2.2.2 tls for (i = 0; i < ehdr.e_phnum; i++) { 104 1.2.2.2 tls if (phdr[i].p_type != PT_LOAD || 105 1.2.2.2 tls (phdr[i].p_flags & (PF_W | PF_X)) == 0) 106 1.2.2.2 tls continue; 107 1.2.2.2 tls 108 1.2.2.2 tls loaddesc->addr = VTOP(phdr[i].p_vaddr); 109 1.2.2.2 tls loaddesc->offset = phdr[i].p_offset; 110 1.2.2.2 tls loaddesc->size = phdr[i].p_filesz; 111 1.2.2.2 tls loaddesc++; 112 1.2.2.2 tls } 113 1.2.2.2 tls /* Terminate loaddesc. */ 114 1.2.2.2 tls loaddesc->addr = 0xffffffff; 115 1.2.2.2 tls loaddesc->offset = 0xffffffff; 116 1.2.2.2 tls loaddesc->size = 0xffffffff; 117 1.2.2.2 tls 118 1.2.2.2 tls EntryPoint = ehdr.e_entry; 119 1.2.2.2 tls } 120
Indexes created Tue Sep 30 11:09:46 GMT 2025