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For PR1302:

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Implement recognition of COFF, ELF and Mach-O object/shared lib files.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@35650 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Reid Spencer 2007-04-04 06:30:26 +00:00
parent 73ca166145
commit 8bb5fd17f9
1 changed files with 39 additions and 10 deletions
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49
lib/System/Path.cpp
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@ -44,25 +44,54 @@ sys::IdentifyFileType(const char*magic, unsigned length) {
assert(length >=4 && "Invalid magic number length");
switch (magic[0]) {
case 'l':
if (magic[1] == 'l' && magic[2] == 'v') {
if (magic[1] == 'l' && magic[2] == 'v')
if (magic[3] == 'c')
return CompressedBytecodeFileType;
return CompressedBytecode_FileType;
else if (magic[3] == 'm')
return BytecodeFileType;
}
return Bytecode_FileType;
break;
case '!':
if (length >= 8)
if (memcmp(magic,"!<arch>\n",8) == 0)
return Archive_FileType;
break;
case '\177':
if (magic[1] == 'E' && magic[2] == 'L' && magic[3] == 'F')
return ELF_FileType;
break;
case '!':
if (length >= 8) {
if (memcmp(magic,"!<arch>\n",8) == 0)
return ArchiveFileType;
}
case 0xCE:
case 0xCF:
// This is complicated by an overlap with Java class files.
// See the Mach-O section in /usr/share/file/magic for details.
if (magic[1] == char(0xFA) && magic[2] == char(0xED) &&
magic[3] == char(0xFE))
if (length >= 15)
if (magic[15] == 1 || magic[15] == 3 || magic[15] == 6 ||
magic[15] == 9)
return Mach_O_FileType;
break;
case 0xF0: // PowerPC Windows
case 0x83: // Alpha 32-bit
case 0x84: // Alpha 64-bit
case 0x66: // MPS R4000 Windows
case 0x50: // mc68K
case 0x4c: // 80386 Windows
if (magic[1] == 0x01)
return COFF_FileType;
case 0x90: // PA-RISC Windows
case 0x68: // mc68K Windows
if (magic[1] == 0x02)
return COFF_FileType;
break;
default:
break;
}
return UnknownFileType;
return Unknown_FileType;
}
bool