mirror of
https://github.com/RPCS3/llvm-mirror.git
synced 2024-12-14 15:19:33 +00:00
f88e9ada1e
This re-lands r333797 with a fix for big endian systems. Original commit message: This isn't encountered anywhere inside LLVM, so I wrote a test case to expose the issue and verify that it is fixed. The basic problem is that the macho_load_command union contains all load comamnd structs. Load command structs in 32-bit macho files can be 32-bit aligned instead of 64-bit aligned. There are some strange circumstances in which this can be exposed in a 64-bit macho if the load commands are invalid or if a 32-bit aligned load command is used. In the past we've worked around this type of problem with changes like r264232. llvm-svn: 333854
48 lines
2.0 KiB
C++
48 lines
2.0 KiB
C++
//===- unittest/BinaryFormat/MachOTest.cpp - MachO support tests ----------===//
|
|
//
|
|
// The LLVM Compiler Infrastructure
|
|
//
|
|
// This file is distributed under the University of Illinois Open Source
|
|
// License. See LICENSE.TXT for details.
|
|
//
|
|
//===----------------------------------------------------------------------===//
|
|
|
|
#include "llvm/BinaryFormat/MachO.h"
|
|
#include "gtest/gtest.h"
|
|
|
|
using namespace llvm;
|
|
using namespace llvm::MachO;
|
|
|
|
TEST(MachOTest, UnalignedLC) {
|
|
unsigned char Valid32BitMachO[] = {
|
|
0xCE, 0xFA, 0xED, 0xFE, 0x07, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00,
|
|
0x02, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x70, 0x00, 0x00, 0x00,
|
|
0x85, 0x80, 0x21, 0x01, 0x01, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0x00,
|
|
0x5F, 0x5F, 0x50, 0x41, 0x47, 0x45, 0x5A, 0x45, 0x52, 0x4F, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x01, 0x00, 0x00, 0x00, 0x38, 0x00, 0x00, 0x00, 0x5F, 0x5F, 0x4C, 0x49,
|
|
0x4E, 0x4B, 0x45, 0x44, 0x49, 0x54, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
|
|
0x00, 0x40, 0x00, 0x00, 0x00, 0x10, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00,
|
|
0x8C, 0x0B, 0x00, 0x00, 0x07, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
|
|
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
|
|
|
|
mach_header *Header =
|
|
reinterpret_cast<mach_header *>(Valid32BitMachO);
|
|
if (!sys::IsLittleEndianHost)
|
|
swapStruct(*Header);
|
|
ASSERT_EQ(Header->magic, MH_MAGIC);
|
|
unsigned char *Current = Valid32BitMachO + sizeof(mach_header);
|
|
unsigned char *BufferEnd =
|
|
Valid32BitMachO + sizeof(mach_header) + Header->sizeofcmds;
|
|
while (Current < BufferEnd) {
|
|
macho_load_command *LC =
|
|
reinterpret_cast<macho_load_command *>(Current);
|
|
if (!sys::IsLittleEndianHost)
|
|
swapStruct(LC->load_command_data);
|
|
ASSERT_EQ(LC->load_command_data.cmd, LC_SEGMENT);
|
|
Current += LC->load_command_data.cmdsize;
|
|
}
|
|
}
|