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Commit Graph

131 Commits

Author SHA1 Message Date
Daniel Dunbar
26348eb62c [MC/Mach-O] Load commands are supposed to 8-byte aligned on 64-bit.
llvm-svn: 173120
2013-01-22 03:42:49 +00:00
Daniel Dunbar
1cb39fe210 [MC/Mach-O] Add support for linker options in Mach-O files.
llvm-svn: 172779
2013-01-18 01:26:07 +00:00
Pedro Artigas
11d1271302 Add more reset methods to make all objects that the backend may use for outputting code have a reset, some are not used but were declared for completeness
llvm-svn: 170227
2012-12-14 18:52:11 +00:00
Chandler Carruth
a490793037 Use the new script to sort the includes of every file under lib.
Sooooo many of these had incorrect or strange main module includes.
I have manually inspected all of these, and fixed the main module
include to be the nearest plausible thing I could find. If you own or
care about any of these source files, I encourage you to take some time
and check that these edits were sensible. I can't have broken anything
(I strictly added headers, and reordered them, never removed), but they
may not be the headers you'd really like to identify as containing the
API being implemented.

Many forward declarations and missing includes were added to a header
files to allow them to parse cleanly when included first. The main
module rule does in fact have its merits. =]

llvm-svn: 169131
2012-12-03 16:50:05 +00:00
Jim Grosbach
367579067f Tidy up. 80 columns.
llvm-svn: 164181
2012-09-18 23:05:12 +00:00
Dmitri Gribenko
93c7ec80b7 Fix Doxygen issues:
* wrap code blocks in \code ... \endcode;
* refer to parameter names in paragraphs correctly (\arg is not what most
  people want -- it starts a new paragraph);
* use \param instead of \arg to document parameters in order to be consistent
  with the rest of the codebase.

llvm-svn: 163902
2012-09-14 14:57:36 +00:00
Jim Grosbach
9f25ce7cba MachO: Correctly mark symbol-difference variables as N_ABS.
.set a, b - c + CONSTANT
d = b - c + CONSTANT

Both 'a' and 'd' should be marked as absolute symbols (N_ABS).

rdar://12219394

llvm-svn: 163853
2012-09-13 23:11:25 +00:00
Benjamin Kramer
e09e72a083 Reduce duplicated hash map lookups.
llvm-svn: 162362
2012-08-22 15:37:57 +00:00
Jim Grosbach
343a996ca5 Refactor data-in-code annotations.
Use a dedicated MachO load command to annotate data-in-code regions.
This is the same format the linker produces for final executable images,
allowing consistency of representation and use of introspection tools
for both object and executable files.

Data-in-code regions are annotated via ".data_region"/".end_data_region"
directive pairs, with an optional region type.

data_region_directive := ".data_region" { region_type }
region_type := "jt8" | "jt16" | "jt32" | "jta32"
end_data_region_directive := ".end_data_region"

The previous handling of ARM-style "$d.*" labels was broken and has
been removed. Specifically, it didn't handle ARM vs. Thumb mode when
marking the end of the section.

rdar://11459456

llvm-svn: 157062
2012-05-18 19:12:01 +00:00
Craig Topper
76f7896f49 Prune some includes and forward declarations.
llvm-svn: 153429
2012-03-26 06:58:25 +00:00
Jim Grosbach
012239e10a 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
Jim Grosbach
9de520d7ad 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
e6d2a7a097 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
Jim Grosbach
2f57374e32 Darwin assembler improved relocs when w/o subsections_via_symbols.
When the file isn't being built with subsections-via-symbols, symbol
differences involving non-local symbols can be resolved more aggressively.
Needed for gas compatibility.

llvm-svn: 146054
2011-12-07 19:46:59 +00:00
Jim Grosbach
c3c8c0eddd Tidy up. Hard tabs.
llvm-svn: 145878
2011-12-06 00:13:09 +00:00
Jim Grosbach
93874e36fa Switch MCAssembler to method names starting w/ lower-case.
per http://llvm.org/docs/CodingStandards.html#ll_naming

llvm-svn: 145873
2011-12-06 00:03:48 +00:00
Eric Christopher
fc8e09962f Formatting and typo.
llvm-svn: 139325
2011-09-08 22:17:40 +00:00
Kevin Enderby
16f9df1f05 Fix a Darwin x86_64 special case of a jmp to a temporary symbol from an atom
without a base symbol that must not have a relocation entry.

llvm-svn: 139316
2011-09-08 20:53:44 +00:00
Benjamin Kramer
e404b3e2d1 MachOWriter: Don't crash on fixups with arithmetic, emit a relocation instead. This matches what as does.
llvm-svn: 137414
2011-08-12 01:51:29 +00:00
Jim Grosbach
5a837d70a5 Don't truncate MachO addresses.
Assigned symbol addresses get truncated to 32-bits, even on 64-bit platforms.
That's obviously bogus.
For example,

 .globl _foo
 .equ _foo, 0x987654321ULL


rdar://9922863

llvm-svn: 137158
2011-08-09 22:12:37 +00:00
Evan Cheng
2a0a4e1a73 Rename TargetAsmBackend to MCAsmBackend; rename createAsmBackend to createMCAsmBackend.
llvm-svn: 136010
2011-07-25 23:24:55 +00:00
Evan Cheng
13d54fc7c9 Move TargetAsmParser.h TargetAsmBackend.h and TargetAsmLexer.h to MC where they belong.
llvm-svn: 135833
2011-07-23 00:45:41 +00:00
Jim Grosbach
440526a1e8 Refactor MachO relocation generaration into the Target directories.
Move the target-specific RecordRelocation logic out of the generic MC
MachObjectWriter and into the target-specific object writers. This allows
nuking quite a bit of target knowledge from the supposedly target-independent
bits in lib/MC.

llvm-svn: 133844
2011-06-24 23:44:37 +00:00
Jim Grosbach
c3b24db27e tidy up whitespace.
llvm-svn: 133815
2011-06-24 19:43:27 +00:00
Jim Grosbach
4ba3d51f23 Fixup info for Thumb2 unconditional branch.
rdar://9667872

llvm-svn: 133808
2011-06-24 18:48:32 +00:00
Jim Grosbach
e216f0411d Tidy up.
llvm-svn: 133770
2011-06-23 22:29:00 +00:00
Bill Wendling
c62a961c09 80-column violations.
llvm-svn: 133668
2011-06-23 00:09:43 +00:00
Bill Wendling
19f2f807eb Move class methods out-of-line. This reduces the indentation, and is more in
line with LLVM's general coding style.
No functionality change.

llvm-svn: 133645
2011-06-22 21:07:27 +00:00
Daniel Dunbar
32545135b1 MC/Mach-O: Update getSymbolAddress() to support evaluation of variables.
llvm-svn: 130522
2011-04-29 18:13:42 +00:00
Daniel Dunbar
f419ec6362 MC/Mach-O: Allow emission of relocations for variables in some more cases.
llvm-svn: 130520
2011-04-29 18:10:47 +00:00
Daniel Dunbar
6178302330 MC/Mach-O: Find section ordinal's by looking at the symbol, instead of assuming they are present in a fragment.
llvm-svn: 130519
2011-04-29 18:07:43 +00:00
Chris Lattner
0304b82f80 Fix a ton of comment typos found by codespell. Patch by
Luis Felipe Strano Moraes!

llvm-svn: 129558
2011-04-15 05:18:47 +00:00
Owen Anderson
b201c7dede Fix a bug introduced by my patch yesterday: BL is a 4-byte instructions like BLX, rather than a 2-byte instruction like B.
llvm-svn: 128169
2011-03-23 21:19:56 +00:00
Owen Anderson
7785f055b9 RIT_ARM_ThumbBranch32Bit relocations are not used and should never be generated.
This fixes kimwitu++, bullet, and tramp3dv4 with the ARM integrated assembler.
Fixes <rdar://problem/9165738>.

llvm-svn: 128117
2011-03-22 22:52:54 +00:00
Duncan Sands
e91289191a Silence compiler warning about case values not being in the enumerated type
MCFixupKind.  This is the same technique that is used elsewhere in MC.

llvm-svn: 127676
2011-03-15 08:54:51 +00:00
Oscar Fuentes
15a668f50b Fixes warnings emitted by Visual Studio 2010 compiler.
Patch by Erik Olofsson!

llvm-svn: 126796
2011-03-01 23:11:57 +00:00
Jason W Kim
10c1a81736 Teach ARM/MC/ELF to handle R_ARM_JUMP24 relocation type for conditional jumps.
(yes, this is different from R_ARM_CALL)

- Adds a new method getARMBranchTargetOpValue() which handles the
  necessary distinction between the conditional and unconditional br/bl
  needed for ARM/ELF

At least for ARM mode, the needed fixup for conditional versus unconditional
br/bl is identical, but the ARM docs and existing ARM tools expect this
reloc type...

Added a few FIXME's for future naming fixups in ARMInstrInfo.td

llvm-svn: 124895
2011-02-04 19:47:15 +00:00
Evan Cheng
3689d1302d Fix bogus assert condition noticed by Csaba Raduly.
llvm-svn: 124645
2011-02-01 01:50:49 +00:00
Evan Cheng
0cdd5547f1 Completed :lower16: / :upper16: support for movw / movt pairs on Darwin.
- Fixed :upper16: fix up routine. It should be shifting down the top 16 bits first.
- Added support for Thumb2 :lower16: and :upper16: fix up.
- Added :upper16: and :lower16: relocation support to mach-o object writer.

llvm-svn: 123424
2011-01-14 02:38:49 +00:00
Daniel Dunbar
2d0cf8e149 MC/Mach-O/Thumb: Select appropriate relocation types for Thumb.
llvm-svn: 122583
2010-12-27 14:49:49 +00:00
Rafael Espindola
b2e09adc62 Merge IsFixupFullyResolved and IsSymbolRefDifferenceFullyResolved. We now
have a single point where targets test if a relocation is needed.

llvm-svn: 122549
2010-12-24 21:22:02 +00:00
Daniel Dunbar
592854a10a MC/Mach-O/ARM: Start handling some Thumb branches.
llvm-svn: 122547
2010-12-24 16:41:46 +00:00
Daniel Dunbar
e6ec0e7149 MC/Mach-O/ARM: Don't try to use scattered relocs for BR24 fixups.
llvm-svn: 122441
2010-12-22 21:26:43 +00:00
Matt Beaumont-Gay
2a54f466cf Fix another conditional expression mismatched enum type warning.
llvm-svn: 122419
2010-12-22 18:25:55 +00:00
Daniel Dunbar
cb8ac619a2 MC/Mach-O/ARM: We always use the SECTDIFF reloc type on ARM, which is
esp. important given that the LOCAL_SECTDIFF enumeration got redefined.

llvm-svn: 122412
2010-12-22 16:52:19 +00:00
Daniel Dunbar
63f7a3a108 MC/Mach-O/ARM: Clone off an ARM version of RecordScatteredRelocation until I figure out how it is supposed to work.
llvm-svn: 122410
2010-12-22 16:45:29 +00:00
Daniel Dunbar
985567aebc MC/Mach-O: Return to reporting errors if we see unexpected fixup kinds.
llvm-svn: 122409
2010-12-22 16:32:41 +00:00
Daniel Dunbar
d85743ca7a MC/Mach-O/ARM: Recognize generic _Data_N fixup kinds.
llvm-svn: 122408
2010-12-22 16:32:37 +00:00
Daniel Dunbar
e44a2c1166 MC/Mach-O/ARM: Add enough relocation logic to get BR24 relocations.
llvm-svn: 122407
2010-12-22 16:19:24 +00:00
Daniel Dunbar
55eff2421b MC/Mach-O/ARM: Fix thinko.
llvm-svn: 122406
2010-12-22 16:19:20 +00:00