Allow object files to be tagged with a version-min load command for iOS
or MacOSX.
Teach macho-dump to understand the version-min load commands for
testcases.
rdar://11337778
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204190 91177308-0d34-0410-b5e6-96231b3b80d8
The revision I'm reverting breaks handling of transitive aliases. This blocks us
and breaks sanitizer bootstrap:
http://lab.llvm.org:8011/builders/sanitizer-x86_64-linux-bootstrap/builds/2651
(and checked locally by Alexey).
This revision is the result of:
svn merge -r204059:204058 -r204028:204027 -r203962:203961 .
+ the regression test added to test/MC/ELF/alias.s
Another way to reproduce the regression with clang:
$ cat q.c
void a1();
void a2() __attribute__((alias("a1")));
void a3() __attribute__((alias("a2")));
void a1() {}
$ ~/work/llvm-build/bin/clang-3.5-good -c q.c && mv q.o good.o && \
~/work/llvm-build/bin/clang-3.5-bad -c q.c && mv q.o bad.o && \
objdump -t good.o bad.o
good.o: file format elf64-x86-64
SYMBOL TABLE:
0000000000000000 l df *ABS* 0000000000000000 q.c
0000000000000000 l d .text 0000000000000000 .text
0000000000000000 l d .data 0000000000000000 .data
0000000000000000 l d .bss 0000000000000000 .bss
0000000000000000 l d .comment 0000000000000000 .comment
0000000000000000 l d .note.GNU-stack 0000000000000000 .note.GNU-stack
0000000000000000 l d .eh_frame 0000000000000000 .eh_frame
0000000000000000 g F .text 0000000000000006 a1
0000000000000000 g F .text 0000000000000006 a2
0000000000000000 g F .text 0000000000000006 a3
bad.o: file format elf64-x86-64
SYMBOL TABLE:
0000000000000000 l df *ABS* 0000000000000000 q.c
0000000000000000 l d .text 0000000000000000 .text
0000000000000000 l d .data 0000000000000000 .data
0000000000000000 l d .bss 0000000000000000 .bss
0000000000000000 l d .comment 0000000000000000 .comment
0000000000000000 l d .note.GNU-stack 0000000000000000 .note.GNU-stack
0000000000000000 l d .eh_frame 0000000000000000 .eh_frame
0000000000000000 g F .text 0000000000000006 a1
0000000000000000 g F .text 0000000000000006 a2
0000000000000000 g .text 0000000000000000 a3
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204137 91177308-0d34-0410-b5e6-96231b3b80d8
Introduce a slightly tighter wrapper around the header structure that
handles this use case. (MCDwarfDwoLineTable)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204101 91177308-0d34-0410-b5e6-96231b3b80d8
Our handling of compilation directory in DwarfDebug was broken
(incorrectly using the 'last' compilation directory (that of the last
CU in the metadata list) for all function emission in any CU). By moving
this handling down into MCDwarf the issue is fixed as the compilation
dir is tracked correctly per line table.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204089 91177308-0d34-0410-b5e6-96231b3b80d8
See r204027 for the precursor to this that applied to asm debug info.
This required some non-obvious API changes to handle the case of asm
output (we never go asm->asm so this didn't come up in r204027): the
modification of the file/directory name by MCDwarfLineTableHeader needed
to be reflected in the MCAsmStreamer caller so it could print the
appropriate .file directive, so those StringRef parameters are now
non-const ref (in/out) parameters rather than just const.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204069 91177308-0d34-0410-b5e6-96231b3b80d8
It is unclear how it would be possible to get M to be NULL in normal scenarios.
Change this to an assert rather than a runtime check as per dblakie's
suggestion.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204060 91177308-0d34-0410-b5e6-96231b3b80d8
This performs the equivalent of a .set directive in that it creates a symbol
which is an alias for another symbol or value which may possibly be yet
undefined. This directive also has the added property in that it marks the
aliased symbol as being a thumb function entry point, in the same way that the
.thumb_func directive does.
The current implementation fails one test due to an unrelated issue. Functions
within .thumb sections are not marked as thumb_func. The result is that
the aliasee function is not valued correctly.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204059 91177308-0d34-0410-b5e6-96231b3b80d8
This is really a consistency fix. Since given
a = b
we propagate the information, we should propagate it too given
a = b + (1 - 1)
Fixes pr19145.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204028 91177308-0d34-0410-b5e6-96231b3b80d8
The previous deduping strategy was woefully inadequate - it only
considered the most recent file used and avoided emitting a duplicate in
that case - never considering the a/b/a scenario.
It was also lacking when it came to directory paths as the previous
filename would never match the current if the filename had been split
into file and directory components.
This change builds caching functionality into the line table at the
lowest level in an optional form (a file number of 0 indicates that one
should be chosen and returned) and will eventually be reused by the
normal source level debugging DWARF emission.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@204027 91177308-0d34-0410-b5e6-96231b3b80d8
For better or worse, this is currently the normal error reporting path
when dealing with backend errors from inline assembly. It's not just
internal compiler issues that come through here, so we shouldn't be
creating a backtrace on this path.
rdar://16329947
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203979 91177308-0d34-0410-b5e6-96231b3b80d8
We were marking the symbol as absolute instead of computing b's offset + the
expression value.
This fixes pr19126.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203962 91177308-0d34-0410-b5e6-96231b3b80d8
This type now represents all the data for the DWARF line table:
directory names, file names, and the line table proper.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203858 91177308-0d34-0410-b5e6-96231b3b80d8
There aren't /that/ many files, and we are already using various maps
and other standard containers that don't use MCContext's allocator to
store these values, so this doesn't seem to be critical and simplifies
the design (I'll be moving construction out of MCContext shortly so it'd
be annoying to have to pass the allocator around to allocate these
things... and we'll have non-MCContext users (debug_line.dwo) shortly)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203831 91177308-0d34-0410-b5e6-96231b3b80d8
This changes the implementation of local directional labels to use a dedicated
map. With that it can then just use CreateTempSymbol, which is what the rest
of MC uses.
CreateTempSymbol doesn't do a great job at making sure the names are unique
(or being efficient when the names are not needed), but that should probably
be fixed in a followup patch.
This fixes pr18928.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203826 91177308-0d34-0410-b5e6-96231b3b80d8
This replaces several "compile unit ID -> thing" mappings in favor of
one mapping from CUID to the whole line table structure (files,
directories, and lines).
This is another step along the way to refactoring out reusable
components of line table handling for use when generating debug_line.dwo
for fission type units.
Also, might be a good basis to fold some of this handling down into
MCStreamers to avoid the special case of "One line table when doing asm
printing, line table per CU otherwise" by building it into the different
MCStreamer implementations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203821 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This adds ObjectFile::section_iterator_range, that allows to write
range-based for-loops running over all sections of a given file.
Several files from lib/ are converted to the new interface. Similar fixes
should be applied to a variety of llvm-* tools.
Reviewers: rafael
Reviewed By: rafael
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D3069
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203799 91177308-0d34-0410-b5e6-96231b3b80d8
This makes the mapping consistent with other CU->X mappings in the
MCContext, helping pave the way to refactor all these values into a
single data structure per CU and thus a single map.
I haven't renamed the data structure as that would make the patch churn
even higher (the MCLineSection name no longer makes sense, as this
structure now contains lines for multiple sections covered by a single
CU, rather than lines for a single section in multiple CUs) and further
refactorings will follow that may remove this type entirely.
For convenience, I also gave the MCLineSection value semantics so we
didn't have to do the lazy construction, manual delete, etc.
(& for those playing at home, refactoring the line printing into a
single data structure will eventually alow that data structure to be
reused to own the debug_line.dwo line table used for type unit file name
resolution)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203726 91177308-0d34-0410-b5e6-96231b3b80d8
When printing assembly we don't have a Layout object, but we can still
try to fold some constants.
Testcase by Ulrich Weigand.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203677 91177308-0d34-0410-b5e6-96231b3b80d8
The function hasReliableSymbolDifference had exactly one use in the MachO
writer. It is also only true for X86_64. In fact, the comments refers to
"Darwin x86_64" and everything else, so this makes the code match the
comment.
If this is to be abstracted again, it should be a property of
TargetObjectWriter, like useAggressiveSymbolFolding.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203605 91177308-0d34-0410-b5e6-96231b3b80d8
Split by comma once instead of multiple times. Moving this upfront
makes the rest of the code considerably simpler.
No functional change.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203429 91177308-0d34-0410-b5e6-96231b3b80d8
This is a straightfoward replacement, it makes debugging a little
easier.
This has no functional impact.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203264 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
llvm/MC/MCSectionMachO.h and llvm/Support/MachO.h both had the same
definitions for the section flags. Instead, grab the definitions out of
support.
No functionality change.
Reviewers: grosbach, Bigcheese, rafael
Reviewed By: rafael
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D2998
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203211 91177308-0d34-0410-b5e6-96231b3b80d8
That was overly aggressive in assuming that we could always assume COFF. Some
of the tests assume that they will get ELF rather than COFF even on Windows
where the default is COFF.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203176 91177308-0d34-0410-b5e6-96231b3b80d8
This is a preliminary setup change to support a renaming of Windows target
triples. Split the object file format information out of the environment into a
separate entity. Unfortunately, file format was previously treated as an
environment with an unknown OS. This is most obvious in the ARM subtarget where
the handling for macho on an arbitrary platform switches to AAPCS rather than
APCS (as per Apple's needs).
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203160 91177308-0d34-0410-b5e6-96231b3b80d8
Windows always uses COFF unless Windows ELF is in use. Rather than checking if
Windows, MinGW, or Cygwin is being targeted, just check if the target OS is
windows and that it is not an ELF environment.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203159 91177308-0d34-0410-b5e6-96231b3b80d8
This compiles with no changes to clang/lld/lldb with MSVC and includes
overloads to various functions which are used by those projects and llvm
which have OwningPtr's as parameters. This should allow out of tree
projects some time to move. There are also no changes to libs/Target,
which should help out of tree targets have time to move, if necessary.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203083 91177308-0d34-0410-b5e6-96231b3b80d8
Before llvm-mc would print it, but llc was assuming that it would produce
another section changing directive before one was needed. That assumption is
false with inline asm.
Fixes PR19049.
Another option would be to always create the section, but in the asm printer
avoid printing sections changes during initialization. That would work, but
* We do use the fact that llvm-mc prints it in testing. The tests can be changed
if needed.
* A quick poll on IRC suggest that most developers prefer the implicit .text to
be printed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@203001 91177308-0d34-0410-b5e6-96231b3b80d8
This will allow external callers of these functions to switch over time
rather than forcing a breaking change all a once. These particular
functions were determined by building clang/lld/lldb.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202959 91177308-0d34-0410-b5e6-96231b3b80d8
After this I will set the default back to F_None. The advantage is that
before this patch forgetting to set F_Binary would corrupt a file on windows.
Forgetting to set F_Text produces one that cannot be read in notepad, which
is a better failure mode :-)
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@202052 91177308-0d34-0410-b5e6-96231b3b80d8
The .error directive is similar to .err in that it will halt assembly if it is
evaluated for assembly. However, it permits a user supplied message to be
rendered.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201999 91177308-0d34-0410-b5e6-96231b3b80d8
The .ifeqs directive assembles the following code if the quoted string
parameters are equal. The strings must be quoted using double quotes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201998 91177308-0d34-0410-b5e6-96231b3b80d8
The .ifne directive assembles the following section of code if the argument
expression is non-zero. Effectively, it is equivalent to if.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201986 91177308-0d34-0410-b5e6-96231b3b80d8
If the strings are not quoted, the first string stops at the first comma, and
the second string stops at the end of the line. Strings which contain
whitespace should be quoted. Unquoted space is to be discarded.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201985 91177308-0d34-0410-b5e6-96231b3b80d8
The .err directive produces an error whenever it is assembled. This can be
useful for preventing assembly when an unexpected condition occurs.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201984 91177308-0d34-0410-b5e6-96231b3b80d8
Offsets past the range of single-slash encoding are encoded as base64,
padded to 6 characters, and prefixed with two slashes. This encoding is
undocumented but used by MSVC.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201940 91177308-0d34-0410-b5e6-96231b3b80d8
This commit moves getSLEB128Size() and getULEB128Size() from
MCAsmInfo to LEB128.h and removes some copy-and-paste code.
Besides, this commit also adds some unit tests for the LEB128
functions.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201937 91177308-0d34-0410-b5e6-96231b3b80d8
This enhances the macro parser to parse and handle parameter qualifications,
which is needed to support required formal parameters in macro definitions. A
required parameter may not be defaulted (though providing a default value is
accepted with a warning). This improves GAS compatibility.
Partially addresses PR9248.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201630 91177308-0d34-0410-b5e6-96231b3b80d8
Rather than using std::pair, create a structure to represent the type. This is
a preliminary refactoring to enable required parameter handling. Additional
state is needed to indicate required parameters. This has a minor side effect
of improving readability by providing more accurate names compared to first and
second.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201629 91177308-0d34-0410-b5e6-96231b3b80d8
Until this point only macro definition with named parameters were parsed but the
names were ignored. This adds support for using that information for named
parameter instantiation.
In order to support the full semantics of the keyword arguments, the arguments
are no longer lazily initialised since the keyword arguments can be specified
out of order and partially if they are defaulted. Prepopulate the arguments
with the default value for any defaulted parameters, and then parse the
specified arguments.
This simplies some of the handling of the arguments in the inner loop since
empty arguments simply increment the parameter index and move on.
Note that keyword and positional arguments cannot be mixed.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201499 91177308-0d34-0410-b5e6-96231b3b80d8
The Linux kernel defines empty macros for compatibility with ARM UAL syntax.
The comma after the name is optional, and if present can be safely lexed. This
improves compatibility with the GNU assembler.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201474 91177308-0d34-0410-b5e6-96231b3b80d8
Recommitting r201380 (reverted in r201389)
Recommitting r201351 and r201355 (reverted in r201351 and r201355)
We weren't emitting the an empty (header only) line table when the line
table was empty - this made the DWARF invalid (the compile unit would
point to the zero-size debug_lines section where there should've been an
empty line table but there was nothing at all). Fix that, and as a
consequence this works around/addresses PR18809.
Also, we emit a non-empty line table to workaround a darwin linker bug,
so XFAILing on darwin too.
Also, mark the test as 'REQUIRES: object-emission' because it does.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201429 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
This adds support for emitting DWARF path discriminator values in
the object streamer. It also changes the DWARF dumper to show
discriminator values in the line table output.
Reviewers: echristo
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D2794
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201427 91177308-0d34-0410-b5e6-96231b3b80d8
Recommitting r201351 and r201355 (reverted in r201351 and r201355)
We weren't emitting the an empty (header only) line table when the line
table was empty - this made the DWARF invalid (the compile unit would
point to the zero-size debug_lines section where there should've been an
empty line table but there was nothing at all). Fix that, and as a
consequence this works around/addresses PR18809.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201380 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
There should be a space before each of these two keywords to avoid
generating invalid assembly files.
NOTE: I could not find an obvious maintainers in CODE_OWNERS.TXT, but
this seems related to debug info.
Reviewers: echristo
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D2791
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201359 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
AsmPrinter::EmitInlineAsm() will no longer use the EmitRawText() call for
targets with mature MC support. Such targets will always parse the inline
assembly (even when emitting assembly). Targets without mature MC support
continue to use EmitRawText() for assembly output.
The hasRawTextSupport() check in AsmPrinter::EmitInlineAsm() has been replaced
with MCAsmInfo::UseIntegratedAs which when true, causes the integrated assembler
to parse inline assembly (even when emitting assembly output). UseIntegratedAs
is set to true for targets that consider any failure to parse valid assembly
to be a bug. Target specific subclasses generally enable the integrated
assembler in their constructor. The default value can be overridden with
-no-integrated-as.
All tests that rely on inline assembly supporting invalid assembly (for example,
those that use mnemonics such as 'foo' or 'hello world') have been updated to
disable the integrated assembler.
Changes since review (and last commit attempt):
- Fixed test failures that were missed due to configuration of local build.
(fixes crash.ll and a couple others).
- Fixed tests that happened to pass because the local build was on X86
(should fix 2007-12-17-InvokeAsm.ll)
- mature-mc-support.ll's should no longer require all targets to be compiled.
(should fix ARM and PPC buildbots)
- Object output (-filetype=obj and similar) now forces the integrated assembler
to be enabled regardless of default setting or -no-integrated-as.
(should fix SystemZ buildbots)
Reviewers: rafael
Reviewed By: rafael
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D2686
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201333 91177308-0d34-0410-b5e6-96231b3b80d8
Summary:
AsmPrinter::EmitInlineAsm() will no longer use the EmitRawText() call for targets with mature MC support. Such targets will always parse the inline assembly (even when emitting assembly). Targets without mature MC support continue to use EmitRawText() for assembly output.
The hasRawTextSupport() check in AsmPrinter::EmitInlineAsm() has been replaced with MCAsmInfo::UseIntegratedAs which when true, causes the integrated assembler to parse inline assembly (even when emitting assembly output). UseIntegratedAs is set to true for targets that consider any failure to parse valid assembly to be a bug. Target specific subclasses generally enable the integrated assembler in their constructor. The default value can be overridden with -no-integrated-as.
All tests that rely on inline assembly supporting invalid assembly (for example, those that use mnemonics such as 'foo' or 'hello world') have been updated to disable the integrated assembler.
Reviewers: rafael
Reviewed By: rafael
CC: llvm-commits
Differential Revision: http://llvm-reviews.chandlerc.com/D2686
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201237 91177308-0d34-0410-b5e6-96231b3b80d8
Some of the more complex directive and macro handling for GAS compatibility
requires lookahead. Add a single token lookahead in the MCAsmLexer.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201058 91177308-0d34-0410-b5e6-96231b3b80d8
This enables a slightly odd feature of gas. The macro is defined when
the outermost macro is instantiated.
PR18599
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@201045 91177308-0d34-0410-b5e6-96231b3b80d8
This is a small simplification and a small step in fixing pr18743 since
private functions on MachO should be using a 'l' prefix.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200994 91177308-0d34-0410-b5e6-96231b3b80d8
This is a nop. doesSectionRequireSymbols is only used from
isSymbolLinkerVisible. isSymbolLinkerVisible only use from ELF was in
if (!Asm.isSymbolLinkerVisible(Symbol) && !Symbol.isUndefined())
return false;
if (Symbol.isTemporary())
return false;
If the symbol is a temporary this code returns false and it is irrelevant if
we take the first if or not. If the symbol is not a temporary,
Asm.isSymbolLinkerVisible returns true without ever calling
doesSectionRequireSymbols.
This was an horrible leftover from when support for ELF was first added.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200894 91177308-0d34-0410-b5e6-96231b3b80d8
This patch fixes the ldr-pseudo implementation to work when used in
inline assembly. The fix is to move arm assembler constant pools
from the ARMAsmParser class to the ARMTargetStreamer class.
Previously we kept the assembler generated constant pools in the
ARMAsmParser object. This does not work for inline assembly because
a new parser object is created for each blob of inline assembly.
This patch moves the constant pools to the ARMTargetStreamer class
so that the constant pool will remain alive for the entire code
generation process.
An ARMTargetStreamer class is now required for the arm backend.
There was no existing implementation for MachO, only Asm and ELF.
Instead of creating an empty MachO subclass, we decided to make the
ARMTargetStreamer a non-abstract class and provide default
(llvm_unreachable) implementations for the non constant-pool related
methods.
Differential Revision: http://llvm-reviews.chandlerc.com/D2638
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200777 91177308-0d34-0410-b5e6-96231b3b80d8
This is a minimal implementation which accepts only constants rather than
full expressions, but that should be perfectly sufficient for all known
users for now.
Patch from PaX Team <pageexec@freemail.hu>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200614 91177308-0d34-0410-b5e6-96231b3b80d8
This will be needed for .octa support, but we don't want to just use the
existing AsmLexer::Integer for it and then have to litter all its users
with explicit checks for the size, and make them use the new get APIntVal()
method.
So let the lexer produce an AsmLexer::Integer as before for numbers which
are small enough — which appears to cover what was previously a nasty
special case handling of numbers which don't fit in int64_t but *do* fit
in uint64_t.
Where the number is too large even for that, produce an AsmLexer::BigNum
instead. We do nothing with these except complain about them for now,
but that will be changed shortly...
Based on a patch from PaX Team <pageexec@freemail.hu>
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200613 91177308-0d34-0410-b5e6-96231b3b80d8
Per the GAS documentation, .fill should permit pattern widths that
aren't a power of two. While I was in the neighborhood, I added some
sanity checking. This change was motivated by a use of this construct
in the Linux Kernel.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200606 91177308-0d34-0410-b5e6-96231b3b80d8
To remove this one simply move the end of file logic from the asm printer to
the target mc streamer.
This removes the last call to hasRawTextSupport from lib/Target.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200590 91177308-0d34-0410-b5e6-96231b3b80d8
This enhances the ARMAsmParser to handle .tlsdescseq directives. This is a
slightly special relocation. We must be able to generate them, but not consume
them in assembly. The relocation is meant to assist the linker in generating a
TLS descriptor sequence. The ELF target streamer is enhanced to append
additional fixups into the current segment and that is used to emit the new
R_ARM_TLS_DESCSEQ relocations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200448 91177308-0d34-0410-b5e6-96231b3b80d8
Add support for tlsdesc relocations which are part of the ABI, marked as
experimental. These relocations permit the linker to perform TLS reference
optimizations.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200447 91177308-0d34-0410-b5e6-96231b3b80d8
This adds support for TLS CALL relocations. TLS CALL relocations are used to
indicate to the linker to generate appropriate entries to resolve TLS references
via an appropriate function invocation (e.g. __tls_get_addr(PLT)).
In order to accomodate the linker relaxation of the TLS access model for the
references (GD/LD -> IE, IE -> LE), the relocation addend must be incomplete.
This requires that the partial inplace value is also incomplete (i.e. 0). We
simply avoid the offset value calculation at the time of the fixup adjustment in
the ARM assembler backend.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200446 91177308-0d34-0410-b5e6-96231b3b80d8
None of the object file formats reported error on iterator increment. In
retrospect, that is not too surprising: no object format stores symbols or
sections in a linked list or other structure that requires chasing pointers.
As a consequence, all error checking can be done on begin() and end().
This reduces the text segment of bin/llvm-readobj in my machine from 521233 to
518526 bytes.
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@200442 91177308-0d34-0410-b5e6-96231b3b80d8