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98 Commits

Author SHA1 Message Date
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
Evan Cheng
7bfc442b2d Some autoconf tests use module level inline asm to test compiler's handling of 
.cfi_startproc. e.g. libffi:

 $ cat confopt.c 
asm (".cfi_startproc\n\t.cfi_endproc");

int main () { return 0; }

Teach MC / dwarf emission to handle these cfi directives which essentially
create an empty frame.

rdar://10017184

llvm-svn: 138504
 2011-08-24 22:31:37 +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
f8b05a7bbb Move ARM-specific test to ARM directory. 
Hopefully make the x86-target-only Windows bots happy.

llvm-svn: 133856
 2011-06-25 01:53:17 +00:00
Jim Grosbach
c10ef9d30c Testcase for r133818 
llvm-svn: 133823
 2011-06-24 20:59:01 +00:00
Rafael Espindola
e8890f4b16 On MachO, unlike ELF, there should be no relocation to produce the CIE pointer. 
llvm-svn: 131149
 2011-05-10 20:59:42 +00:00
Daniel Dunbar
9a87852114 MCAsmLayout: Add support for computing the symbol offset of variables. Not 
currently used, because variables don't get reported as being "defined".

llvm-svn: 130524
 2011-04-29 18:20:20 +00:00
Daniel Dunbar
1488659798 MC: Change variable symbols to be recognized as defined, by assigning their sections based on FindAssociatedSection(). 
llvm-svn: 130523
 2011-04-29 18:20:17 +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
Daniel Dunbar
5d8c7d0d36 MC: Add support for disabling "temporary label" behavior. Useful for debugging 
on Darwin.

llvm-svn: 128430
 2011-03-28 22:49:15 +00:00
Daniel Dunbar
0e9d7aeb1f MC/Mach-O: Fix regression introduced in r126127, this assignment shouldn't have 
been removed.

llvm-svn: 127812
 2011-03-17 16:25:24 +00:00
Devang Patel
bac565c8a3 Move arch specific tests in arch specific directories. 
llvm-svn: 126401
 2011-02-24 19:06:27 +00:00
Daniel Dunbar
9ee74282a6 MC/Mach-O/Thumb: Set the thumb bit in the symbol table. 
llvm-svn: 122630
 2010-12-29 14:14:06 +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
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
Rafael Espindola
5004de4d8b Add reduced test from 8845. 
llvm-svn: 122438
 2010-12-22 21:15:13 +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
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
1f9fd0b79b MC/Expr: Implemnt more aggressive folding during symbol evaluation using 
IsSymbolRefDifferenceFullyResolved(). For example, we will now fold away
something like:
--
_a:
...
L0:
...
L1:
...
.long (L1 - L0) / 2
--

llvm-svn: 122043
 2010-12-17 05:50:33 +00:00
Rafael Espindola
94d026d157 Relax alignment fragments. 
With this we don't need the EffectiveSize field anymore. Without that field
LayoutFragment only updates offsets and we don't need to invalidate the
current fragment when it is relaxed (only the ones following it).

This is also a very small improvement in the accuracy of the layout info as
we now use the after relaxation size immediately.

llvm-svn: 121857
 2010-12-15 08:45:53 +00:00
Rafael Espindola
f55f520a7a Patch by David Meyer to avoid a O(N^2) behaviour when relaxing fragments. 
Since we now don't update addresses so early, we might relax a bit more than
we need to. This is simillar to the issue in PR8467.

llvm-svn: 121856
 2010-12-15 07:39:29 +00:00
Rafael Espindola
866531d633 Fix absolute recording of differences of symbols in two sections. Reduced from ctor_dtor_count-2.cpp. 
llvm-svn: 121152
 2010-12-07 17:12:32 +00:00
Rafael Espindola
da64b6aa50 Fix relocations with weak definitions. 
llvm-svn: 121114
 2010-12-07 05:57:28 +00:00
Rafael Espindola
9ede5ef045 Fix pcrel relocations that cross sections. 
llvm-svn: 121107
 2010-12-07 03:50:14 +00:00
Rafael Espindola
c98cc0b286 Fix a crash reduced from gcc produced assembly. 
llvm-svn: 121085
 2010-12-07 01:09:54 +00:00
Rafael Espindola
3e954d16f4 Second try at making direct object emission produce the same results 
as llc + llvm-mc. This time ELF is not changed and I tested that llvm-gcc
bootstrap on darwin10 using darwin9's assembler and linker.

llvm-svn: 121006
 2010-12-06 17:27:56 +00:00
Rafael Espindola
9215947c83 There are two reasons why we might want to use 
foo = a - b
.long foo
instead of just
.long a - b

First, on darwin9 64 bits the assembler produces the wrong result. Second,
if "a" is the end of the section all darwin assemblers (9, 10 and mc) will not
consider a - b to be a constant but will if the dummy foo is created.

Split how we handle these cases. The first one is something MC should take care
of. The second one has to be handled by the caller.

llvm-svn: 120889
 2010-12-04 03:21:47 +00:00
Rafael Espindola
50b6170457 Next step: Only pad debug_line when the target is darwin. Add a FIXME to avoid 
doing that if the target is darwin10 or newer.

This fixes
*) Direct object emission was producing objects without the workaround on
   darwin9.
*) Assembly printing was producing objects with the workaround on linux.

llvm-svn: 120866
 2010-12-04 00:31:13 +00:00
Daniel Dunbar
6153e5cd7b macho-dump: Fix typo. 
llvm-svn: 120185
 2010-11-27 04:00:06 +00:00
Rafael Espindola
e3dc1c951c Use multiple 0x66 prefixes so that all nops up to 15 bytes are a single instruction. 
llvm-svn: 120147
 2010-11-25 17:14:16 +00:00
Kevin Enderby
214e641d8d Added support for the Mach-O .symbol_resolver directive. rdar://8673046 
llvm-svn: 119816
 2010-11-19 18:39:33 +00:00
Rafael Espindola
53a8ae85b7 Change the 11 byte nop to be a single instruction. 
llvm-svn: 119286
 2010-11-15 23:10:30 +00:00
Daniel Dunbar
ed92665b19 MC/Mach-O/i386: Fix a crash in relocation handling. 
llvm-svn: 114176
 2010-09-17 15:21:50 +00:00
Rafael Espindola
f926b1b27d Change section_data dumping to print hex numbers instead of using 
python's %r.

llvm-svn: 113685
 2010-09-11 15:25:58 +00:00
Chris Lattner
8f621d5039 fix the encoding of the "jump on *cx" family of instructions, 
rdar://8061602

llvm-svn: 113343
 2010-09-08 04:30:51 +00:00
Kevin Enderby
999057d413 MC/X86: Add aliases for Jcc variants. 
llvm-svn: 104890
 2010-05-27 21:33:19 +00:00
Eric Christopher
e7166af3b7 Add a quick test of relocations. 
llvm-svn: 104794
 2010-05-27 00:53:40 +00:00
Eric Christopher
5c5a5be829 Add support for initialized global data for darwin tls. Update comments 
and testcases accordingly.

llvm-svn: 104635
 2010-05-25 21:28:50 +00:00
Eric Christopher
8c8d643a87 A more combo tls testcase. 
llvm-svn: 104163
 2010-05-19 21:19:42 +00:00
Eric Christopher
6b51010080 Few more simple tls testcases. 
llvm-svn: 104148
 2010-05-19 20:35:15 +00:00
Eric Christopher
79cbb29471 Quick test to make sure we're emitting the tbss section correctly. 
llvm-svn: 104063
 2010-05-18 21:40:20 +00:00
Kevin Enderby
438a36f66a Fixed the problem with a branch to "0b" that was not parsed by llvm-mc 
correctly.  The Lexer was incorrectly eating the newline casusing it to branch
to address 0.  Updated the test case to use a "0:" label and a branch to "0b".

llvm-svn: 104038
 2010-05-18 17:51:35 +00:00
Daniel Dunbar
739e720a21 MC/Mach-O: Implement support for setting indirect symbol table offset in section header. 
Also, create symbol data for LHS of assignment, to match 'as' symbol ordering better.

llvm-svn: 104033
 2010-05-18 17:28:24 +00:00
Kevin Enderby
14c986967b Added support in MC for Directional Local Labels. 
llvm-svn: 103989
 2010-05-17 23:08:19 +00:00
Daniel Dunbar
b18dfe6cb4 MC/Mach-O/x86: Optimal nop sequences should only be used for the .text sections, not all sections in the text segment. 
llvm-svn: 103981
 2010-05-17 21:54:30 +00:00
Daniel Dunbar
ee5ac7a69b MC/Mach-O: Reverse order of SymbolData scanning when emitting instructions. 
- This fixes a string table mismatch with 'as' when two new symbols are defined
   in a single instruction.

llvm-svn: 103979
 2010-05-17 21:19:59 +00:00
Daniel Dunbar
80719b2d36 MC/Mach-O: Fix some differences in symbol flag handling. 
- Don't clear weak reference flag, 'as' was only "trying" to do this, it wasn't
   actually succeeding.
 - Clear the "lazy bound" bit when we mark something external. This corresponds
   roughly to the lazy clearing of the bit that 'as' implements in
   symbol_table_lookup.
 - The exact meaning of these flags appears pretty loose, since 'as' isn't very
   consistent. For now we just try to match 'as', we will clean this up one day
   hopefully.

llvm-svn: 103964
 2010-05-17 20:12:31 +00:00
Daniel Dunbar
89a1d9036a MC/Mach-O/x86_64: Darwin's special "signed_N" relocation types should only be 
used to replace a normal relocation, not a reference to a GOT entry.

llvm-svn: 103789
 2010-05-14 18:53:40 +00:00
Daniel Dunbar
f254edca8d MC/Mach-O: Add another zerofill test to improve coverage. 
llvm-svn: 103691
 2010-05-13 01:10:28 +00:00