13 Commits

Author SHA1 Message Date
David Blaikie
ea1783464b DataExtractor: use decodeSLEB128 to implement getSLEB128
Should've been NFC, but turns out DataExtractor had better test coverage
for decoding SLEB128 than the decodeSLEB128 did - revealing a couple of
bugs (one in the error handling, another in sign extension). So fixed
those to get the DataExtractor tests passing again.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@364253 91177308-0d34-0410-b5e6-96231b3b80d8
2019-06-24 23:45:18 +00:00
David Blaikie
9f8792e75b NFC: DataExtractor: use decodeULEB128 to implement getULEB128
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@364230 91177308-0d34-0410-b5e6-96231b3b80d8
2019-06-24 20:43:36 +00:00
Pavel Labath
cd63a63664 [Support] Fix error handling in DataExtractor::get[US]LEB128
Summary:
These functions are documented as not modifying the offset argument if
the extraction fails (just like other DataExtractor functions). However,
while reviewing D63591 we discovered that this is not the case -- if the
function reaches the end of the data buffer, it will just return the
value parsed until that point and set offset to point to the end of the
buffer.

This fixes the functions to act as advertised, and adds a regression
test.

Reviewers: dblaikie, probinson, bkramer

Subscribers: kristina, llvm-commits

Tags: #llvm

Differential Revision: https://reviews.llvm.org/D63645

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@364169 91177308-0d34-0410-b5e6-96231b3b80d8
2019-06-24 09:11:24 +00:00
Chandler Carruth
6b547686c5 Update the file headers across all of the LLVM projects in the monorepo
to reflect the new license.

We understand that people may be surprised that we're moving the header
entirely to discuss the new license. We checked this carefully with the
Foundation's lawyer and we believe this is the correct approach.

Essentially, all code in the project is now made available by the LLVM
project under our new license, so you will see that the license headers
include that license only. Some of our contributors have contributed
code under our old license, and accordingly, we have retained a copy of
our old license notice in the top-level files in each project and
repository.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@351636 91177308-0d34-0410-b5e6-96231b3b80d8
2019-01-19 08:50:56 +00:00
Wolfgang Pieb
b9c4ad20bf [DWARF] Support for DW_FORM_strx3 and complete support for DW_FORM_strx{1,2,4}
(consumer).

Reviewer: aprantl

Differential Revision:  https://reviews.llvm.org/D34418


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@305944 91177308-0d34-0410-b5e6-96231b3b80d8
2017-06-21 19:37:44 +00:00
Paul Robinson
ac4b289dce Make DWARFDebugLine use StringRef for directory/file tables. NFC
Differential Revision: http://reviews.llvm.org/D32728


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@301940 91177308-0d34-0410-b5e6-96231b3b80d8
2017-05-02 17:37:32 +00:00
Artyom Skrobov
ab22d95481 Using llvm::sys::swapByteOrder() for the common case of byte-swapping a value in place
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210978 91177308-0d34-0410-b5e6-96231b3b80d8
2014-06-14 13:18:07 +00:00
Artyom Skrobov
9bb92cb537 Renaming SwapByteOrder() to getSwappedBytes()
The next commit will add swapByteOrder(), acting in-place



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@210973 91177308-0d34-0410-b5e6-96231b3b80d8
2014-06-14 11:36:01 +00:00
Craig Topper
34bc6b6e78 [C++11] Make use of 'nullptr' in the Support library.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@205697 91177308-0d34-0410-b5e6-96231b3b80d8
2014-04-07 04:17:22 +00:00
Rafael Espindola
21a01d1ea8 Make the host endianness check an integer constant expression.
I will remove the isBigEndianHost function once I update clang.

The ifdef logic is designed to
* not use configure/cmake to avoid breaking -arch i686 -arch ppc.
* default to little endian
* be as small as possible

It looks like sys/endian.h is the preferred header on most modern BSD systems,
but it is better to change this in a followup patch as machine/endian.h is
available on FreeBSD, OpenBSD, NetBSD and OS X.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@179527 91177308-0d34-0410-b5e6-96231b3b80d8
2013-04-15 14:44:24 +00:00
Benjamin Kramer
46aed73955 DataExtractor: Fix integer truncation issues in LEB128 extraction.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@162201 91177308-0d34-0410-b5e6-96231b3b80d8
2012-08-20 10:52:11 +00:00
Chad Rosier
90f20044ad Remove extra semi-colons.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@151169 91177308-0d34-0410-b5e6-96231b3b80d8
2012-02-22 17:25:00 +00:00
Benjamin Kramer
8c74f7f299 Add the DataExtractor utility class.
It is an endian-aware helper that can read data from a StringRef. It will
come in handy for DWARF parsing. This class is inspired by LLDB's
DataExtractor, but is stripped down to the bare minimum needed for DWARF.

Comes with unit tests!

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@139626 91177308-0d34-0410-b5e6-96231b3b80d8
2011-09-13 19:42:16 +00:00