Jason W Kim e964d1192a Address the last bit of relocation flag related divergence betweeen ...

LLVM and binutils.

With this patch, there are no functional differences between the .o
produced directly from LLVM versus the .s to .o via GNU as, for relocation tags
at least, for both PIC and non-PIC modes.

Because some non-PIC reloc tags are used (legally) on PIC, so IsPCRel flag is
necessary but not sufficient to determine whether the overall codegen mode is
PIC or not. Why is this necessary? There is an incompatibility of how relocs
are emitted in the .rodata section.  Binutils PIC likes to emit certain relocs
as section relative offsets.  Non-PIC does not do this.

So I added a hidden switch on the ELFObjectwriter "-arm-elf-force-pic" which
forces the objectwriter to pretend that all relocs are for PIC mode.


Todo: Activate ForceARMElfPIC to true if -relocation-model=pic is selected
on llc.

Todo: There are probably more issues for PIC mode on ARM/MC/ELF...

Todo: Existing tests in MC/ARM/elf-reloc*.ll need to be converted over to .s 
tests as well as expanded to cover the gamut.



git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@131205 91177308-0d34-0410-b5e6-96231b3b80d8

2011-05-11 22:53:06 +00:00

..

MCDisassembler

Give MC/MCDisassembler/Disassembler.h a header guard.

2011-04-24 15:46:56 +00:00

MCParser

Parsing and plumbing for .cfi_sections.

2011-05-10 01:10:18 +00:00

CMakeLists.txt

…

ELFObjectWriter.cpp

Address the last bit of relocation flag related divergence betweeen

2011-05-11 22:53:06 +00:00

ELFObjectWriter.h

Address the last bit of relocation flag related divergence betweeen

2011-05-11 22:53:06 +00:00

MachObjectWriter.cpp

MC/Mach-O: Update getSymbolAddress() to support evaluation of variables.

2011-04-29 18:13:42 +00:00

Makefile

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MCAsmInfo.cpp

Rename DwarfRequiresRelocationForStmtList to

2011-05-10 20:35:05 +00:00

MCAsmInfoCOFF.cpp

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MCAsmInfoDarwin.cpp

Rename DwarfRequiresRelocationForStmtList to

2011-05-10 20:35:05 +00:00

MCAsmStreamer.cpp

Add CFIStartSections to the asm printer. Add an assert that at least

2011-05-10 13:39:48 +00:00

MCAssembler.cpp

Don't force relaxation of AdvanceLoc instructions on OS X. gdb is happy with

2011-05-08 14:35:21 +00:00

MCCodeEmitter.cpp

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MCContext.cpp

Make the StringMaps attached to MCContext use the MCContext's allocator;

2011-04-18 05:02:31 +00:00

MCDisassembler.cpp

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MCDwarf.cpp

Avoid a gcc warning.

2011-05-10 22:28:35 +00:00

MCELF.cpp

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MCELF.h

…

MCELFObjectTargetWriter.cpp

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MCELFStreamer.cpp

Factor some code into a new EmitFrames method.

2011-05-10 03:14:15 +00:00

MCELFStreamer.h

Add constructors to MCElfStreamer and MCObjectStreamer to take an extra MCAssembler * argument.

2011-03-09 17:33:05 +00:00

MCExpr.cpp

MCExpr: Add FindAssociatedSection, which attempts to mirror the 'as' semantics

2011-04-29 18:00:03 +00:00

MCInst.cpp

…

MCInstPrinter.cpp

Preliminary support for ARM frame save directives emission via MI flags.

2011-03-05 18:43:32 +00:00

MCLabel.cpp

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MCLoggingStreamer.cpp

Simplify the handling of pcrel relocations on ELF. Now we do the right thing

2011-05-01 03:50:49 +00:00

MCMachObjectTargetWriter.cpp

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MCMachOStreamer.cpp

Factor some code into a new EmitFrames method.

2011-05-10 03:14:15 +00:00

MCNullStreamer.cpp

Simplify the handling of pcrel relocations on ELF. Now we do the right thing

2011-05-01 03:50:49 +00:00

MCObjectStreamer.cpp

Simplify the handling of pcrel relocations on ELF. Now we do the right thing

2011-05-01 03:50:49 +00:00

MCObjectWriter.cpp

…

MCPureStreamer.cpp

…

MCSection.cpp

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MCSectionCOFF.cpp

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MCSectionELF.cpp

Be nice to Xcore and the XMOS assembler and avoid quoting section names

2011-03-04 20:03:14 +00:00

MCSectionMachO.cpp

Reapply 127939 since Daniel fixed the breakage. <rdar://problem/9012638>

2011-03-19 02:42:31 +00:00

MCStreamer.cpp

Add CFIStartSections to the asm printer. Add an assert that at least

2011-05-10 13:39:48 +00:00

MCSymbol.cpp

MC: Change variable symbols to be recognized as defined, by assigning their sections based on FindAssociatedSection().

2011-04-29 18:20:17 +00:00

MCValue.cpp

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TargetAsmBackend.cpp

…

WinCOFFObjectWriter.cpp

Fix relative relocations. This is sufficient for running the rust testsuite with

2011-04-21 18:36:50 +00:00

WinCOFFStreamer.cpp

…