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<rdar://problem/11535465> 

LC_ENCRYPTION_INFO with "cryptid == 0" is not actually encrypted and LLDB fails to read memory from file.

llvm-svn: 157487
This commit is contained in:
Greg Clayton 2012-05-25 18:09:55 +00:00
parent 67a498cc5f
commit 4d78c40825
1 changed files with 15 additions and 8 deletions
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23
lldb/source/Plugins/ObjectFile/Mach-O/ObjectFileMachO.cpp
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@ -751,7 +751,6 @@ ObjectFileMachO::ParseSections ()
{
lldb::user_id_t segID = 0;
lldb::user_id_t sectID = 0;
struct segment_command_64 load_cmd;
uint32_t offset = MachHeaderSizeFromMagic(m_header.magic);
uint32_t i;
const bool is_core = GetType() == eTypeCoreFile;
@ -760,24 +759,32 @@ ObjectFileMachO::ParseSections ()
// First look up any LC_ENCRYPTION_INFO load commands
typedef RangeArray<uint32_t, uint32_t, 8> EncryptedFileRanges;
EncryptedFileRanges encrypted_file_ranges;
encryption_info_command encryption_cmd;
for (i=0; i<m_header.ncmds; ++i)
{
const uint32_t load_cmd_offset = offset;
if (m_data.GetU32(&offset, &load_cmd, 2) == NULL)
if (m_data.GetU32(&offset, &encryption_cmd, 2) == NULL)
break;
if (load_cmd.cmd == LoadCommandEncryptionInfo)
if (encryption_cmd.cmd == LoadCommandEncryptionInfo)
{
EncryptedFileRanges::Entry entry;
entry.SetRangeBase(m_data.GetU32(&offset));
entry.SetByteSize(m_data.GetU32(&offset));
encrypted_file_ranges.Append(entry);
if (m_data.GetU32(&offset, &encryption_cmd.cryptoff, 3))
{
if (encryption_cmd.cryptid != 0)
{
EncryptedFileRanges::Entry entry;
entry.SetRangeBase(encryption_cmd.cryptoff);
entry.SetByteSize(encryption_cmd.cryptsize);
encrypted_file_ranges.Append(entry);
}
}
}
offset = load_cmd_offset + load_cmd.cmdsize;
offset = load_cmd_offset + encryption_cmd.cmdsize;
}
offset = MachHeaderSizeFromMagic(m_header.magic);
struct segment_command_64 load_cmd;
for (i=0; i<m_header.ncmds; ++i)
{
const uint32_t load_cmd_offset = offset;