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2269779262
Previously this change was submitted from a Windows machine, so changes made to the case of filenames and directory names did not survive the commit, and as a result the CMake source file names and the on-disk file names did not match on case-sensitive file systems. I'm resubmitting this patch from a Linux system, which hopefully allows the case changes to make it through unfettered. llvm-svn: 277213
49 lines
1.9 KiB
C++
49 lines
1.9 KiB
C++
//===- MSFCommon.cpp - Common types and functions for MSF files -*- C++ -*-===//
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//
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// The LLVM Compiler Infrastructure
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//
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// This file is distributed under the University of Illinois Open Source
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// License. See LICENSE.TXT for details.
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//
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//===----------------------------------------------------------------------===//
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#include "llvm/DebugInfo/MSF/MSFCommon.h"
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#include "llvm/DebugInfo/MSF/MSFError.h"
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using namespace llvm;
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using namespace llvm::msf;
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Error llvm::msf::validateSuperBlock(const SuperBlock &SB) {
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// Check the magic bytes.
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if (std::memcmp(SB.MagicBytes, Magic, sizeof(Magic)) != 0)
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return make_error<MSFError>(msf_error_code::invalid_format,
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"MSF magic header doesn't match");
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if (!isValidBlockSize(SB.BlockSize))
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return make_error<MSFError>(msf_error_code::invalid_format,
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"Unsupported block size.");
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// We don't support directories whose sizes aren't a multiple of four bytes.
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if (SB.NumDirectoryBytes % sizeof(support::ulittle32_t) != 0)
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return make_error<MSFError>(msf_error_code::invalid_format,
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"Directory size is not multiple of 4.");
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// The number of blocks which comprise the directory is a simple function of
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// the number of bytes it contains.
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uint64_t NumDirectoryBlocks =
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bytesToBlocks(SB.NumDirectoryBytes, SB.BlockSize);
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// The directory, as we understand it, is a block which consists of a list of
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// block numbers. It is unclear what would happen if the number of blocks
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// couldn't fit on a single block.
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if (NumDirectoryBlocks > SB.BlockSize / sizeof(support::ulittle32_t))
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return make_error<MSFError>(msf_error_code::invalid_format,
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"Too many directory blocks.");
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if (SB.BlockMapAddr == 0)
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return make_error<MSFError>(msf_error_code::invalid_format,
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"Block 0 is reserved");
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return Error::success();
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}
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