From 0b57cec536236d46e3dba9bd041533462f33dbb7 Mon Sep 17 00:00:00 2001 From: Dimitry Andric Date: Fri, 20 Dec 2019 19:53:05 +0000 Subject: Move all sources from the llvm project into contrib/llvm-project. This uses the new layout of the upstream repository, which was recently migrated to GitHub, and converted into a "monorepo". That is, most of the earlier separate sub-projects with their own branches and tags were consolidated into one top-level directory, and are now branched and tagged together. Updating the vendor area to match this layout is next. --- contrib/llvm/lib/XRay/FileHeaderReader.cpp | 69 ------------------------------ 1 file changed, 69 deletions(-) delete mode 100644 contrib/llvm/lib/XRay/FileHeaderReader.cpp (limited to 'contrib/llvm/lib/XRay/FileHeaderReader.cpp') diff --git a/contrib/llvm/lib/XRay/FileHeaderReader.cpp b/contrib/llvm/lib/XRay/FileHeaderReader.cpp deleted file mode 100644 index 3fb021906a6f..000000000000 --- a/contrib/llvm/lib/XRay/FileHeaderReader.cpp +++ /dev/null @@ -1,69 +0,0 @@ -//===- FileHeaderReader.cpp - XRay File Header Reader --------------------===// -// -// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions. -// See https://llvm.org/LICENSE.txt for license information. -// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception -// -//===----------------------------------------------------------------------===// -#include "llvm/XRay/FileHeaderReader.h" - -namespace llvm { -namespace xray { - -// Populates the FileHeader reference by reading the first 32 bytes of the file. -Expected readBinaryFormatHeader(DataExtractor &HeaderExtractor, - uint32_t &OffsetPtr) { - // FIXME: Maybe deduce whether the data is little or big-endian using some - // magic bytes in the beginning of the file? - - // First 32 bytes of the file will always be the header. We assume a certain - // format here: - // - // (2) uint16 : version - // (2) uint16 : type - // (4) uint32 : bitfield - // (8) uint64 : cycle frequency - // (16) - : padding - XRayFileHeader FileHeader; - auto PreReadOffset = OffsetPtr; - FileHeader.Version = HeaderExtractor.getU16(&OffsetPtr); - if (OffsetPtr == PreReadOffset) - return createStringError( - std::make_error_code(std::errc::invalid_argument), - "Failed reading version from file header at offset %d.", OffsetPtr); - - PreReadOffset = OffsetPtr; - FileHeader.Type = HeaderExtractor.getU16(&OffsetPtr); - if (OffsetPtr == PreReadOffset) - return createStringError( - std::make_error_code(std::errc::invalid_argument), - "Failed reading file type from file header at offset %d.", OffsetPtr); - - PreReadOffset = OffsetPtr; - uint32_t Bitfield = HeaderExtractor.getU32(&OffsetPtr); - if (OffsetPtr == PreReadOffset) - return createStringError( - std::make_error_code(std::errc::invalid_argument), - "Failed reading flag bits from file header at offset %d.", OffsetPtr); - - FileHeader.ConstantTSC = Bitfield & 1uL; - FileHeader.NonstopTSC = Bitfield & 1uL << 1; - PreReadOffset = OffsetPtr; - FileHeader.CycleFrequency = HeaderExtractor.getU64(&OffsetPtr); - if (OffsetPtr == PreReadOffset) - return createStringError( - std::make_error_code(std::errc::invalid_argument), - "Failed reading cycle frequency from file header at offset %d.", - OffsetPtr); - - std::memcpy(&FileHeader.FreeFormData, - HeaderExtractor.getData().bytes_begin() + OffsetPtr, 16); - - // Manually advance the offset pointer 16 bytes, after getting a raw memcpy - // from the underlying data. - OffsetPtr += 16; - return std::move(FileHeader); -} - -} // namespace xray -} // namespace llvm -- cgit v1.2.3