Commit Graph

1536 Commits

Author SHA1 Message Date
Sean Callanan bdce3885c4 Modified the Enhanced Disassembler to create and
cache disassemblers according to the string value
of the target triple, not according to the enum
of the triple CPU.  The reason for this is that
certain attributes of the instruction set are not
reflected in the enum, but only in the string.

llvm-svn: 149773
2012-02-04 07:45:35 +00:00
Akira Hatanaka f0b08445f6 Add a new MachineJumpTableInfo entry type, EK_GPRel64BlockAddress, which is
needed to emit a 64-bit gp-relative relocation entry. Make changes necessary
for emitting jump tables which have entries with directive .gpdword. This patch
does not implement the parts needed for direct object emission or JIT.

llvm-svn: 149668
2012-02-03 04:33:00 +00:00
Kevin Enderby e1a12cf3ee Fixed a crash in llvm-mc for Mach-O when a symbol difference expression uses a
symbol from an assignment.  In this case the symbol did not have a fragment so
MCObjectWriter::IsSymbolRefDifferenceFullyResolved() should not have been
calling IsSymbolRefDifferenceFullyResolvedImpl() with a NULL fragment and should
just have returned false in that case.

llvm-svn: 149442
2012-01-31 23:02:57 +00:00
Devang Patel a173ee56fd Add assembler dialect attribute in asm parser which lets target specific asm parser change dialect on the fly.
llvm-svn: 149396
2012-01-31 18:14:05 +00:00
Benjamin Kramer 4efe5064c3 Silence GCC's -Wreturn-type warning.
llvm-svn: 149179
2012-01-28 15:28:41 +00:00
Rafael Espindola 004725876e Small improvement to the recursion detection logic from the previous commit.
llvm-svn: 149175
2012-01-28 06:22:14 +00:00
Rafael Espindola 72f5f170c6 Handle recursive variable definitions directly. This gives us better error
messages and allows us to fix PR11865.

llvm-svn: 149174
2012-01-28 05:57:00 +00:00
Jim Grosbach d856fd0d99 Source information in 'expected relocatable expression' diagnostic.
llvm-svn: 149105
2012-01-27 00:51:23 +00:00
Jim Grosbach b591277c4a Better diagnostic for malformed .org assembly directive.
Provide source line number information.

llvm-svn: 149101
2012-01-27 00:37:08 +00:00
Jim Grosbach 5aac954be9 Tidy up.
llvm-svn: 149096
2012-01-26 23:47:45 +00:00
Jim Grosbach b18b409258 Add simple support for keeping MCFixup source information.
Can be used to issue more user friendly diagnostics for faulty
relocation constructs and such.

llvm-svn: 149092
2012-01-26 23:20:11 +00:00
Jim Grosbach dfc5b555da Add SourceMgr to MCContext for backend diagnostics.
llvm-svn: 149090
2012-01-26 23:20:05 +00:00
James Molloy 6685c08e5f Add support for the R_ARM_TARGET1 relocation, which should be given to relocations applied to all C++ constructors and destructors.
This enables the linker to match concrete relocation types (absolute or relative) with whatever library or C++ support code is being linked against.

llvm-svn: 149057
2012-01-26 09:25:43 +00:00
Anton Korobeynikov 7722a2d4e3 Properly emit ctors / dtors with priorities into desired sections
and let linker handle the rest.

This finally fixes PR5329

llvm-svn: 148990
2012-01-25 22:24:19 +00:00
Jim Grosbach 35bc8f9159 ARM Darwin symbol ref differences w/o subsection-via-symbols.
When not using subsections via symbols, the assembler can resolve
symbol differences (including pcrel references) to non-local
labels at assembly time, not just those in the same atom.

llvm-svn: 148865
2012-01-24 21:45:25 +00:00
Rafael Espindola 3c47e37387 Add support for .cfi_signal_frame. Fixes pr11762.
llvm-svn: 148733
2012-01-23 21:51:52 +00:00
David Blaikie 46a9f016c5 More dead code removal (using -Wunreachable-code)
llvm-svn: 148578
2012-01-20 21:51:11 +00:00
Benjamin Kramer d3309a3434 Add missing breaks to switch.
Found by the clang static analyzer.

llvm-svn: 148543
2012-01-20 14:42:37 +00:00
Benjamin Kramer 084b9f4134 Remove a bunch of unused variable assignments.
Found by the clang static analyzer.

llvm-svn: 148541
2012-01-20 14:42:32 +00:00
Owen Anderson 4b53e188c1 Add a dump() implementation for sub-instruction MCOperands.
llvm-svn: 148493
2012-01-19 19:32:20 +00:00
Jim Grosbach d4dbd09d85 MCAssembler tweak for determining when a symbol difference is resolved.
If the two fragments are in the same Atom, then the difference
expression is resolvable at compile time. Previously we were checking
that they were in the same fragment, but that breaks down in the
presence of instruction relaxation which has multiple fragments in the
same atom.

rdar://10711829

llvm-svn: 148423
2012-01-18 21:54:12 +00:00
Jim Grosbach aba3de99c0 Tidy up. MCAsmBackend naming conventions.
llvm-svn: 148400
2012-01-18 18:52:16 +00:00
Jim Grosbach 3b50c9ec7f Move some ARM specific MCAssmebler bits into the ARMAsmBackend.
llvm-svn: 148364
2012-01-18 00:23:57 +00:00
Jim Grosbach 4045507fea MC tweak symbol difference resolution for non-local symbols.
When the non-local symbol in the expression is in the same fragment
as the second symbol, the assembler can still evaluate the expression
without needing a relocation.

For example, on ARM:
_foo:
	ldr lr, (_foo - 4)

rdar://10348687

llvm-svn: 148341
2012-01-17 22:14:39 +00:00
Kevin Enderby 6223cf72e6 The error check for using -g with a .s file already containing dwarf .file
directives was in the wrong place and getting triggered incorectly with a
cpp .file directive.  This change fixes that and adds a test case.

llvm-svn: 147951
2012-01-11 18:04:47 +00:00
Devang Patel 227b6279b6 Let asm parser query asm syntax dialect.
llvm-svn: 147880
2012-01-10 21:49:42 +00:00
Kevin Enderby f7d77069ca This is the matching change for the data structure name changes for the
functional change in r147860 to use DW_TAG_label's instead TAG_subprogram's.
This only changes names and updates comments.  No functional change.

llvm-svn: 147877
2012-01-10 21:12:34 +00:00
Benjamin Kramer 233149cf06 Fix some leftover control reaches end of non-void function warnings.
llvm-svn: 147874
2012-01-10 20:47:20 +00:00
Chandler Carruth f3e8502cc1 Add 'llvm_unreachable' to passify GCC's understanding of the constraints
of several newly un-defaulted switches. This also helps optimizers
(including LLVM's) recognize that every case is covered, and we should
assume as much.

llvm-svn: 147861
2012-01-10 18:08:01 +00:00
Kevin Enderby 8d4a2204b7 Various crash reporting tools have a problem with the dwarf generated for
assembly source when it generates the TAG_subprogram dwarf debug info for
the labels that have nothing between them as in this bit of assembly source:

% cat ZeroLength.s 
_func1:
_func2:
 nop

One solution would be to not emit the subsequent labels with the same address
and use the next label with a different address or the end of the section for
the AT_high_pc value of the TAG_subprogram.

Turns out in llvm-mc it is not possible in all cases to determine of two
symbols have the same value at the point we put out the TAG_subprogram dwarf
debug info.

So we will have llvm-mc instead of putting out TAG_subprogram's put out
DW_TAG_label's.  And the DW_TAG_label does not have a AT_high_pc value which
avoids the problem.

This commit is only the functional change to make the diffs clear as to what is
really being changed.  The next commit will be to clean up the names of such
things like MCGenDwarfSubprogramEntry to something like MCGenDwarfLabelEntry.

rdar://10666925

llvm-svn: 147860
2012-01-10 17:52:29 +00:00
David Blaikie edbb58c577 Remove unnecessary default cases in switches that cover all enum values.
llvm-svn: 147855
2012-01-10 16:47:17 +00:00
Rafael Espindola 5cb98f1062 Remove the logging streamer.
llvm-svn: 147820
2012-01-10 00:40:39 +00:00
Rafael Espindola f28213ca01 Don't print an unused label before .cfi_endproc.
llvm-svn: 147763
2012-01-09 00:17:29 +00:00
Rafael Espindola 81a6274e7c Remove MCELFStreamer.h.
llvm-svn: 147745
2012-01-07 23:18:39 +00:00
Rafael Espindola 382412032c Don't print a label before .cfi_startproc when we don't need to. This makes
the produce assembly when using CFI just a bit more readable.

llvm-svn: 147743
2012-01-07 22:42:19 +00:00
Rafael Espindola 0708209642 Split Finish into Finish and FinishImpl to have a common place to do end of
file error checking. Use that to error on an unfinished cfi_startproc.

The error is not nice, but is already better than a segmentation fault.

llvm-svn: 147717
2012-01-07 03:13:18 +00:00
Rafael Espindola 4ea99816ef Implement cfi_restore. Patch by Brian Anderson!
llvm-svn: 147356
2011-12-29 21:43:03 +00:00
Rafael Espindola 03dbffd8ce Rename Remember and Restore to RememberState and RestoreState for consistency.
llvm-svn: 147354
2011-12-29 21:09:08 +00:00
Rafael Espindola ef4aa35164 Implement .cfi_escape. Patch by Brian Anderson!
llvm-svn: 147352
2011-12-29 20:24:47 +00:00
Rafael Espindola a56ab0ede7 Section relative fixups are a coff concept, not a x86 one. Replace the
x86 specific reloc_coff_secrel32 with a generic FK_SecRel_4.

llvm-svn: 147252
2011-12-24 14:47:52 +00:00
Rafael Espindola 908d2ed14e Move x86 specific bits of the COFF writer to lib/Target/X86.
llvm-svn: 147231
2011-12-24 02:14:02 +00:00
Rafael Espindola b120ea2b92 Define trivial destructor inline.
llvm-svn: 147230
2011-12-24 01:53:13 +00:00
Rafael Espindola a2da8aa505 Make GetRelocType pure virtual.
llvm-svn: 147229
2011-12-24 01:36:25 +00:00
Rafael Espindola e61724aa00 Move all the dependencies on X86FixupKinds.h to a single method in preparation
to moving it to lib/Target/X86.

llvm-svn: 147190
2011-12-22 22:21:47 +00:00
Rafael Espindola 29abd977de Kill the monstrosity that was ELFObjectWriter.h.
llvm-svn: 147136
2011-12-22 03:38:00 +00:00
Rafael Espindola 34a68afc05 Misc cleanups.
llvm-svn: 147135
2011-12-22 03:24:43 +00:00
Rafael Espindola 1dc45d8df4 Move the Mips only bits of the ELF writer to lib/Target/Mips.
llvm-svn: 147133
2011-12-22 03:03:17 +00:00
Rafael Espindola cc369ac0a2 Move the MBlaze ELF writer bits to lib/Target/MBlaze.
llvm-svn: 147129
2011-12-22 02:28:24 +00:00
Rafael Espindola 38a400df3b Move PPC bits to lib/Target/PowerPC.
llvm-svn: 147124
2011-12-22 01:57:09 +00:00
Akira Hatanaka e2eed9649e Local dynamic TLS model for direct object output. Create the correct TLS MIPS
ELF relocations.

Patch by Jack Carter.

llvm-svn: 147118
2011-12-22 01:05:17 +00:00