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PR13013: ELF Type identification fails for MSB type ELF files.

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Fix 'sys::IdentifyFileType' to work with big and little endian byte orderings
when reading the ELF object file type.

Initial patch by Stefan Hepp.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@159138 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Meador Inge
2012-06-25 14:48:43 +00:00
parent a0706a9ff4
commit b935cd1514
2 changed files with 16 additions and 2 deletions
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7
lib/Support/Path.cpp
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@ -60,8 +60,11 @@ sys::IdentifyFileType(const char *magic, unsigned length) {
case '\177':
if (magic[1] == 'E' && magic[2] == 'L' && magic[3] == 'F') {
if (length >= 18 && magic[17] == 0)
switch (magic[16]) {
bool Data2MSB = magic[5] == 2;
unsigned high = Data2MSB ? 16 : 17;
unsigned low = Data2MSB ? 17 : 16;
if (length >= 18 && magic[high] == 0)
switch (magic[low]) {
default: break;
case 1: return ELF_Relocatable_FileType;
case 2: return ELF_Executable_FileType;