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Add support for Darwin’s 64-bit universal files with 64-bit offsets and sizes for the objects.

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Darwin added support in its Xcode 8.0 tools (released in the beta) for universal
files where offsets and sizes for the objects are 64-bits to allow support for
objects contained in universal files to be larger then 4gb.  The change is very
straight forward.  There is a new magic number that differs by one bit, much
like the 64-bit Mach-O files.  Then there is a new structure that follow the
fat_header that has the same layout but with the offset and size fields using
64-bit values instead of 32-bit values.

rdar://26899493


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@273207 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Kevin Enderby
2016-06-20 22:16:18 +00:00
parent ad097a448b
commit f5d5db71df
6 changed files with 122 additions and 21 deletions
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lib/Support/Path.cpp
+1 -1
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@@ -1049,7 +1049,7 @@ file_magic identify_magic(StringRef Magic) {
case 0xCA:
if (Magic[1] == char(0xFE) && Magic[2] == char(0xBA) &&
Magic[3] == char(0xBE)) {
(Magic[3] == char(0xBE) || Magic[3] == char(0xBF))) {
// This is complicated by an overlap with Java class files.
// See the Mach-O section in /usr/share/file/magic for details.
if (Magic.size() >= 8 && Magic[7] < 43)