[llvm-commits] [llvm] r98974 - in /llvm/trunk: lib/MC/MachObjectWriter.cpp test/MC/MachO/darwin-x86_64-diff-relocs.s test/MC/MachO/darwin-x86_64-reloc-offsets.s test/MC/MachO/darwin-x86_64-reloc.s
Daniel Dunbar
daniel at zuster.org
Fri Mar 19 11:07:55 PDT 2010
Author: ddunbar
Date: Fri Mar 19 13:07:55 2010
New Revision: 98974
URL: http://llvm.org/viewvc/llvm-project?rev=98974&view=rev
Log:
MC/Mach-O/x86_64: Add relocation support.
- This is "extraordinarily" Darwin 'as' compatible. See the litany of FIXMEs littered about for more information.
- There are a few cases which seem to clearly be 'as' bugs which I have left unsupported, and there is one cases where we diverge but should fix if it blocks diffing .o files (Darwin 'as' ends up widening a jump unnecessarily).
- 403.gcc build, runs, and diffs equivalently to the 'as' built version now (using llvm-mc). However, it builds so slowly that I wouldn't recommend trying it quite yet. :)
Added:
llvm/trunk/test/MC/MachO/darwin-x86_64-diff-relocs.s
llvm/trunk/test/MC/MachO/darwin-x86_64-reloc-offsets.s
llvm/trunk/test/MC/MachO/darwin-x86_64-reloc.s
Modified:
llvm/trunk/lib/MC/MachObjectWriter.cpp
Modified: llvm/trunk/lib/MC/MachObjectWriter.cpp
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/lib/MC/MachObjectWriter.cpp?rev=98974&r1=98973&r2=98974&view=diff
==============================================================================
--- llvm/trunk/lib/MC/MachObjectWriter.cpp (original)
+++ llvm/trunk/lib/MC/MachObjectWriter.cpp Fri Mar 19 13:07:55 2010
@@ -34,6 +34,7 @@
case FK_Data_2: return 1;
case X86::reloc_pcrel_4byte:
case X86::reloc_riprel_4byte:
+ case X86::reloc_riprel_4byte_movq_load:
case FK_Data_4: return 2;
case FK_Data_8: return 3;
}
@@ -46,10 +47,16 @@
case X86::reloc_pcrel_1byte:
case X86::reloc_pcrel_4byte:
case X86::reloc_riprel_4byte:
+ case X86::reloc_riprel_4byte_movq_load:
return true;
}
}
+static bool isFixupKindRIPRel(unsigned Kind) {
+ return Kind == X86::reloc_riprel_4byte ||
+ Kind == X86::reloc_riprel_4byte_movq_load;
+}
+
namespace {
class MachObjectWriterImpl {
@@ -125,6 +132,19 @@
RIT_LocalDifference = 4
};
+ /// X86_64 uses its own relocation types.
+ enum RelocationInfoTypeX86_64 {
+ RIT_X86_64_Unsigned = 0,
+ RIT_X86_64_Signed = 1,
+ RIT_X86_64_Branch = 2,
+ RIT_X86_64_GOTLoad = 3,
+ RIT_X86_64_GOT = 4,
+ RIT_X86_64_Subtractor = 5,
+ RIT_X86_64_Signed1 = 6,
+ RIT_X86_64_Signed2 = 7,
+ RIT_X86_64_Signed4 = 8
+ };
+
/// MachSymbolData - Helper struct for containing some precomputed information
/// on symbols.
struct MachSymbolData {
@@ -417,6 +437,194 @@
Write32(Address);
}
+ void RecordX86_64Relocation(const MCAssembler &Asm,
+ const MCDataFragment &Fragment,
+ const MCAsmFixup &Fixup, MCValue Target,
+ uint64_t &FixedValue) {
+ unsigned IsPCRel = isFixupKindPCRel(Fixup.Kind);
+ unsigned IsRIPRel = isFixupKindRIPRel(Fixup.Kind);
+ unsigned Log2Size = getFixupKindLog2Size(Fixup.Kind);
+
+ // See <reloc.h>.
+ uint32_t Address = Fragment.getOffset() + Fixup.Offset;
+ int64_t Value = 0;
+ unsigned Index = 0;
+ unsigned IsExtern = 0;
+ unsigned Type = 0;
+
+ Value = Target.getConstant();
+
+ if (IsPCRel) {
+ // Compensate for the relocation offset, Darwin x86_64 relocations only
+ // have the addend and appear to have attempted to define it to be the
+ // actual expression addend without the PCrel bias. However, instructions
+ // with data following the relocation are not accomodated for (see comment
+ // below regarding SIGNED{1,2,4}), so it isn't exactly that either.
+ Value += 1 << Log2Size;
+ }
+
+ if (Target.isAbsolute()) { // constant
+ // SymbolNum of 0 indicates the absolute section.
+ Type = RIT_X86_64_Unsigned;
+ Index = 0;
+
+ // FIXME: I believe this is broken, I don't think the linker can
+ // understand it. I think it would require a local relocation, but I'm not
+ // sure if that would work either. The official way to get an absolute
+ // PCrel relocation is to use an absolute symbol (which we don't support
+ // yet).
+ if (IsPCRel) {
+ IsExtern = 1;
+ Type = RIT_X86_64_Branch;
+ }
+ } else if (Target.getSymB()) { // A - B + constant
+ const MCSymbol *A = &Target.getSymA()->getSymbol();
+ MCSymbolData &A_SD = Asm.getSymbolData(*A);
+ const MCSymbolData *A_Base = Asm.getAtom(&A_SD);
+
+ const MCSymbol *B = &Target.getSymB()->getSymbol();
+ MCSymbolData &B_SD = Asm.getSymbolData(*B);
+ const MCSymbolData *B_Base = Asm.getAtom(&B_SD);
+
+ // Neither symbol can be modified.
+ if (Target.getSymA()->getKind() != MCSymbolRefExpr::VK_None ||
+ Target.getSymB()->getKind() != MCSymbolRefExpr::VK_None)
+ llvm_report_error("unsupported relocation of modified symbol");
+
+ // We don't support PCrel relocations of differences. Darwin 'as' doesn't
+ // implement most of these correctly.
+ if (IsPCRel)
+ llvm_report_error("unsupported pc-relative relocation of difference");
+
+ // We don't currently support any situation where one or both of the
+ // symbols would require a local relocation. This is almost certainly
+ // unused and may not be possible to encode correctly.
+ if (!A_Base || !B_Base)
+ llvm_report_error("unsupported local relocations in difference");
+
+ // Darwin 'as' doesn't emit correct relocations for this (it ends up with
+ // a single SIGNED relocation); reject it for now.
+ if (A_Base == B_Base)
+ llvm_report_error("unsupported relocation with identical base");
+
+ Value += A_SD.getAddress() - A_Base->getAddress();
+ Value -= B_SD.getAddress() - B_Base->getAddress();
+
+ Index = A_Base->getIndex();
+ IsExtern = 1;
+ Type = RIT_X86_64_Unsigned;
+
+ MachRelocationEntry MRE;
+ MRE.Word0 = Address;
+ MRE.Word1 = ((Index << 0) |
+ (IsPCRel << 24) |
+ (Log2Size << 25) |
+ (IsExtern << 27) |
+ (Type << 28));
+ Relocations[Fragment.getParent()].push_back(MRE);
+
+ Index = B_Base->getIndex();
+ IsExtern = 1;
+ Type = RIT_X86_64_Subtractor;
+ } else {
+ const MCSymbol *Symbol = &Target.getSymA()->getSymbol();
+ MCSymbolData &SD = Asm.getSymbolData(*Symbol);
+ const MCSymbolData *Base = Asm.getAtom(&SD);
+
+ // x86_64 almost always uses external relocations, except when there is no
+ // symbol to use as a base address (a local symbol with no preceeding
+ // non-local symbol).
+ if (Base) {
+ Index = Base->getIndex();
+ IsExtern = 1;
+
+ // Add the local offset, if needed.
+ if (Base != &SD)
+ Value += SD.getAddress() - Base->getAddress();
+ } else {
+ // The index is the section ordinal.
+ //
+ // FIXME: O(N)
+ Index = 1;
+ MCAssembler::const_iterator it = Asm.begin(), ie = Asm.end();
+ for (; it != ie; ++it, ++Index)
+ if (&*it == SD.getFragment()->getParent())
+ break;
+ assert(it != ie && "Unable to find section index!");
+ IsExtern = 0;
+ Value += SD.getAddress();
+
+ if (IsPCRel)
+ Value -= Address + (1 << Log2Size);
+ }
+
+ MCSymbolRefExpr::VariantKind Modifier = Target.getSymA()->getKind();
+ if (IsPCRel) {
+ if (IsRIPRel) {
+ if (Modifier == MCSymbolRefExpr::VK_GOTPCREL) {
+ // x86_64 distinguishes movq foo at GOTPCREL so that the linker can
+ // rewrite the movq to an leaq at link time if the symbol ends up in
+ // the same linkage unit.
+ if (unsigned(Fixup.Kind) == X86::reloc_riprel_4byte_movq_load)
+ Type = RIT_X86_64_GOTLoad;
+ else
+ Type = RIT_X86_64_GOT;
+ } else if (Modifier != MCSymbolRefExpr::VK_None)
+ llvm_report_error("unsupported symbol modifier in relocation");
+ else
+ Type = RIT_X86_64_Signed;
+ } else {
+ if (Modifier != MCSymbolRefExpr::VK_None)
+ llvm_report_error("unsupported symbol modifier in branch "
+ "relocation");
+
+ Type = RIT_X86_64_Branch;
+ }
+
+ // The Darwin x86_64 relocation format has a problem where it cannot
+ // encode an address (L<foo> + <constant>) which is outside the atom
+ // containing L<foo>. Generally, this shouldn't occur but it does happen
+ // when we have a RIPrel instruction with data following the relocation
+ // entry (e.g., movb $012, L0(%rip)). Even with the PCrel adjustment
+ // Darwin x86_64 uses, the offset is still negative and the linker has
+ // no way to recognize this.
+ //
+ // To work around this, Darwin uses several special relocation types to
+ // indicate the offsets. However, the specification or implementation of
+ // these seems to also be incomplete; they should adjust the addend as
+ // well based on the actual encoded instruction (the additional bias),
+ // but instead appear to just look at the final offset.
+ if (IsRIPRel) {
+ switch (-(Target.getConstant() + (1 << Log2Size))) {
+ case 1: Type = RIT_X86_64_Signed1; break;
+ case 2: Type = RIT_X86_64_Signed2; break;
+ case 4: Type = RIT_X86_64_Signed4; break;
+ }
+ }
+ } else {
+ if (Modifier == MCSymbolRefExpr::VK_GOT)
+ Type = RIT_X86_64_GOT;
+ else if (Modifier != MCSymbolRefExpr::VK_None)
+ llvm_report_error("unsupported symbol modifier in relocation");
+ else
+ Type = RIT_X86_64_Unsigned;
+ }
+ }
+
+ // x86_64 always writes custom values into the fixups.
+ FixedValue = Value;
+
+ // struct relocation_info (8 bytes)
+ MachRelocationEntry MRE;
+ MRE.Word0 = Address;
+ MRE.Word1 = ((Index << 0) |
+ (IsPCRel << 24) |
+ (Log2Size << 25) |
+ (IsExtern << 27) |
+ (Type << 28));
+ Relocations[Fragment.getParent()].push_back(MRE);
+ }
+
void RecordScatteredRelocation(const MCAssembler &Asm,
const MCFragment &Fragment,
const MCAsmFixup &Fixup, MCValue Target,
@@ -479,6 +687,11 @@
const MCDataFragment &Fragment,
const MCAsmFixup &Fixup, MCValue Target,
uint64_t &FixedValue) {
+ if (Is64Bit) {
+ RecordX86_64Relocation(Asm, Fragment, Fixup, Target, FixedValue);
+ return;
+ }
+
unsigned IsPCRel = isFixupKindPCRel(Fixup.Kind);
unsigned Log2Size = getFixupKindLog2Size(Fixup.Kind);
Added: llvm/trunk/test/MC/MachO/darwin-x86_64-diff-relocs.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/MachO/darwin-x86_64-diff-relocs.s?rev=98974&view=auto
==============================================================================
--- llvm/trunk/test/MC/MachO/darwin-x86_64-diff-relocs.s (added)
+++ llvm/trunk/test/MC/MachO/darwin-x86_64-diff-relocs.s Fri Mar 19 13:07:55 2010
@@ -0,0 +1,329 @@
+// RUN: llvm-mc -triple x86_64-apple-darwin10 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
+
+ .text
+
+// FIXME: llvm-mc doesn't handle this in a way we can make compatible with 'as',
+// currently, because of how we handle assembler variables.
+//
+// See <rdar://problem/7763719> improve handling of absolute symbols
+
+// _baz = 4
+
+_foo:
+ xorl %eax,%eax
+_g0:
+ xorl %eax,%eax
+L0:
+ jmp 4
+// jmp _baz
+
+// FIXME: Darwin 'as' for historical reasons widens this jump, but doesn't emit
+// a relocation. It seems like 'as' widens any jump that is not to a temporary,
+// which is inherited from the x86_32 behavior, even though x86_64 could do
+// better.
+// jmp _g0
+
+ jmp L0
+ jmp _g1
+
+// FIXME: Darwin 'as' gets this wrong as well, even though it could get it right
+// given the other things we do on x86_64. It is using a short jump here. This
+// is probably fallout of the hack that exists for x86_32.
+// jmp L1
+
+// FIXME: We don't support this, and would currently get it wrong, it should be a jump to an absolute address.
+// jmp L0 - _g0
+
+// jmp _g1 - _g0
+// FIXME: Darwin 'as' comes up with 'SIGNED' here instead of 'BRANCH'.
+// jmp _g1 - L1
+// FIXME: Darwin 'as' gets this completely wrong. It ends up with a single
+// branch relocation. Fallout from the other delta hack?
+// jmp L1 - _g0
+
+ jmp _g2
+ jmp L2
+ jmp _g3
+ jmp L3
+// FIXME: Darwin 'as' gets this completely wrong. It ends up with a single
+// branch relocation. Fallout from the other delta hack?
+// jmp L2 - _g3
+// jmp _g3 - _g2
+// FIXME: Darwin 'as' comes up with 'SIGNED' here instead of 'BRANCH'.
+// jmp _g3 - L3
+// FIXME: Darwin 'as' gets this completely wrong. It ends up with a single
+// branch relocation. Fallout from the other delta hack?
+// jmp L3 - _g2
+
+ movl %eax,4(%rip)
+// movl %eax,_baz(%rip)
+ movl %eax,_g0(%rip)
+ movl %eax,L0(%rip)
+ movl %eax,_g1(%rip)
+ movl %eax,L1(%rip)
+
+// FIXME: Darwin 'as' gets most of these wrong, and there is an ambiguity in ATT
+// syntax in what they should mean in the first place (absolute or
+// rip-relative address).
+// movl %eax,L0 - _g0(%rip)
+// movl %eax,_g1 - _g0(%rip)
+// movl %eax,_g1 - L1(%rip)
+// movl %eax,L1 - _g0(%rip)
+
+ movl %eax,_g2(%rip)
+ movl %eax,L2(%rip)
+ movl %eax,_g3(%rip)
+ movl %eax,L3(%rip)
+
+// FIXME: Darwin 'as' gets most of these wrong, and there is an ambiguity in ATT
+// syntax in what they should mean in the first place (absolute or
+// rip-relative address).
+// movl %eax,L2 - _g2(%rip)
+// movl %eax,_g3 - _g2(%rip)
+// movl %eax,_g3 - L3(%rip)
+// movl %eax,L3 - _g2(%rip)
+
+_g1:
+ xorl %eax,%eax
+L1:
+ xorl %eax,%eax
+
+ .data
+_g2:
+ xorl %eax,%eax
+L2:
+ .quad 4
+// .quad _baz
+ .quad _g2
+ .quad L2
+ .quad _g3
+ .quad L3
+ .quad L2 - _g2
+ .quad _g3 - _g2
+ .quad L3 - _g2
+ .quad L3 - _g3
+
+ .quad _g0
+ .quad L0
+ .quad _g1
+ .quad L1
+ .quad L0 - _g0
+ .quad _g1 - _g0
+ .quad L1 - _g0
+ .quad L1 - _g1
+
+_g3:
+ xorl %eax,%eax
+L3:
+ xorl %eax,%eax
+
+// CHECK: ('cputype', 16777223)
+// CHECK: ('cpusubtype', 3)
+// CHECK: ('filetype', 1)
+// CHECK: ('num_load_commands', 1)
+// CHECK: ('load_commands_size', 336)
+// CHECK: ('flag', 0)
+// CHECK: ('reserved', 0)
+// CHECK: ('load_commands', [
+// CHECK: # Load Command 0
+// CHECK: (('command', 25)
+// CHECK: ('size', 232)
+// CHECK: ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('vm_addr', 0)
+// CHECK: ('vm_size', 236)
+// CHECK: ('file_offset', 368)
+// CHECK: ('file_size', 236)
+// CHECK: ('maxprot', 7)
+// CHECK: ('initprot', 7)
+// CHECK: ('num_sections', 2)
+// CHECK: ('flags', 0)
+// CHECK: ('sections', [
+// CHECK: # Section 0
+// CHECK: (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 0)
+// CHECK: ('size', 94)
+// CHECK: ('offset', 368)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 604)
+// CHECK: ('num_reloc', 12)
+// CHECK: ('flags', 0x80000400)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ('reserved3', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+
+// FIXME: Unfortunately, we do not get these relocations in exactly the same
+// order as Darwin 'as'. It turns out that 'as' *usually* ends up emitting
+// them in reverse address order, but sometimes it allocates some
+// additional relocations late so these end up preceed the other entries. I
+// haven't figured out the exact criteria for this yet.
+
+// CHECK: (('word-0', 0x56),
+// CHECK: ('word-1', 0x1d000004)),
+// CHECK: (('word-0', 0x50),
+// CHECK: ('word-1', 0x1d000004)),
+// CHECK: (('word-0', 0x4a),
+// CHECK: ('word-1', 0x1d000003)),
+// CHECK: (('word-0', 0x44),
+// CHECK: ('word-1', 0x1d000003)),
+// CHECK: (('word-0', 0x3e),
+// CHECK: ('word-1', 0x1d000002)),
+// CHECK: (('word-0', 0x38),
+// CHECK: ('word-1', 0x1d000002)),
+// CHECK: (('word-0', 0x20),
+// CHECK: ('word-1', 0x2d000004)),
+// CHECK: (('word-0', 0x1b),
+// CHECK: ('word-1', 0x2d000004)),
+// CHECK: (('word-0', 0x16),
+// CHECK: ('word-1', 0x2d000003)),
+// CHECK: (('word-0', 0x11),
+// CHECK: ('word-1', 0x2d000003)),
+// CHECK: (('word-0', 0xc),
+// CHECK: ('word-1', 0x2d000002)),
+// CHECK: (('word-0', 0x5),
+// CHECK: ('word-1', 0x2d000000)),
+// CHECK: ])
+// CHECK: # Section 1
+// CHECK: (('section_name', '__data\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__DATA\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 94)
+// CHECK: ('size', 142)
+// CHECK: ('offset', 462)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 700)
+// CHECK: ('num_reloc', 16)
+// CHECK: ('flags', 0x400)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ('reserved3', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: # Relocation 0
+// CHECK: (('word-0', 0x7a),
+// CHECK: ('word-1', 0x5e000001)),
+// CHECK: # Relocation 1
+// CHECK: (('word-0', 0x7a),
+// CHECK: ('word-1', 0xe000002)),
+// CHECK: # Relocation 2
+// CHECK: (('word-0', 0x72),
+// CHECK: ('word-1', 0x5e000001)),
+// CHECK: # Relocation 3
+// CHECK: (('word-0', 0x72),
+// CHECK: ('word-1', 0xe000002)),
+// CHECK: # Relocation 4
+// CHECK: (('word-0', 0x62),
+// CHECK: ('word-1', 0xe000002)),
+// CHECK: # Relocation 5
+// CHECK: (('word-0', 0x5a),
+// CHECK: ('word-1', 0xe000002)),
+// CHECK: # Relocation 6
+// CHECK: (('word-0', 0x52),
+// CHECK: ('word-1', 0xe000001)),
+// CHECK: # Relocation 7
+// CHECK: (('word-0', 0x4a),
+// CHECK: ('word-1', 0xe000001)),
+// CHECK: # Relocation 8
+// CHECK: (('word-0', 0x3a),
+// CHECK: ('word-1', 0x5e000003)),
+// CHECK: # Relocation 9
+// CHECK: (('word-0', 0x3a),
+// CHECK: ('word-1', 0xe000004)),
+// CHECK: # Relocation 10
+// CHECK: (('word-0', 0x32),
+// CHECK: ('word-1', 0x5e000003)),
+// CHECK: # Relocation 11
+// CHECK: (('word-0', 0x32),
+// CHECK: ('word-1', 0xe000004)),
+// CHECK: # Relocation 12
+// CHECK: (('word-0', 0x22),
+// CHECK: ('word-1', 0xe000004)),
+// CHECK: # Relocation 13
+// CHECK: (('word-0', 0x1a),
+// CHECK: ('word-1', 0xe000004)),
+// CHECK: # Relocation 14
+// CHECK: (('word-0', 0x12),
+// CHECK: ('word-1', 0xe000003)),
+// CHECK: # Relocation 15
+// CHECK: (('word-0', 0xa),
+// CHECK: ('word-1', 0xe000003)),
+// CHECK: ])
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 1
+// CHECK: (('command', 2)
+// CHECK: ('size', 24)
+// CHECK: ('symoff', 828)
+// CHECK: ('nsyms', 5)
+// CHECK: ('stroff', 908)
+// CHECK: ('strsize', 24)
+// CHECK: ('_string_data', '\x00_foo\x00_g0\x00_g1\x00_g2\x00_g3\x00\x00\x00')
+// CHECK: ('_symbols', [
+// CHECK: # Symbol 0
+// CHECK: (('n_strx', 1)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 1)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 0)
+// CHECK: ('_string', '_foo')
+// CHECK: ),
+// CHECK: # Symbol 1
+// CHECK: (('n_strx', 6)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 1)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 2)
+// CHECK: ('_string', '_g0')
+// CHECK: ),
+// CHECK: # Symbol 2
+// CHECK: (('n_strx', 10)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 1)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 90)
+// CHECK: ('_string', '_g1')
+// CHECK: ),
+// CHECK: # Symbol 3
+// CHECK: (('n_strx', 14)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 94)
+// CHECK: ('_string', '_g2')
+// CHECK: ),
+// CHECK: # Symbol 4
+// CHECK: (('n_strx', 18)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 232)
+// CHECK: ('_string', '_g3')
+// CHECK: ),
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 2
+// CHECK: (('command', 11)
+// CHECK: ('size', 80)
+// CHECK: ('ilocalsym', 0)
+// CHECK: ('nlocalsym', 5)
+// CHECK: ('iextdefsym', 5)
+// CHECK: ('nextdefsym', 0)
+// CHECK: ('iundefsym', 5)
+// CHECK: ('nundefsym', 0)
+// CHECK: ('tocoff', 0)
+// CHECK: ('ntoc', 0)
+// CHECK: ('modtaboff', 0)
+// CHECK: ('nmodtab', 0)
+// CHECK: ('extrefsymoff', 0)
+// CHECK: ('nextrefsyms', 0)
+// CHECK: ('indirectsymoff', 0)
+// CHECK: ('nindirectsyms', 0)
+// CHECK: ('extreloff', 0)
+// CHECK: ('nextrel', 0)
+// CHECK: ('locreloff', 0)
+// CHECK: ('nlocrel', 0)
+// CHECK: ('_indirect_symbols', [
+// CHECK: ])
+// CHECK: ),
+// CHECK: ])
Added: llvm/trunk/test/MC/MachO/darwin-x86_64-reloc-offsets.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/MachO/darwin-x86_64-reloc-offsets.s?rev=98974&view=auto
==============================================================================
--- llvm/trunk/test/MC/MachO/darwin-x86_64-reloc-offsets.s (added)
+++ llvm/trunk/test/MC/MachO/darwin-x86_64-reloc-offsets.s Fri Mar 19 13:07:55 2010
@@ -0,0 +1,343 @@
+// RUN: llvm-mc -triple x86_64-apple-darwin10 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
+
+ .data
+
+ .org 0x10
+L0:
+ .long 0
+ .long 0
+ .long 0
+ .long 0
+
+_d:
+ .long 0
+L1:
+ .long 0
+
+ .text
+
+// These generate normal x86_64 (external) relocations. They could all use
+// SIGNED, but don't for pedantic compatibility with Darwin 'as'.
+
+ // SIGNED1
+ movb $0x12, _d(%rip)
+
+ // SIGNED
+ movb $0x12, _d + 1(%rip)
+
+ // SIGNED4
+ movl $0x12345678, _d(%rip)
+
+ // SIGNED
+ movl $0x12345678, _d + 1(%rip)
+
+ // SIGNED2
+ movl $0x12345678, _d + 2(%rip)
+
+ // SIGNED1
+ movl $0x12345678, _d + 3(%rip)
+
+ // SIGNED
+ movl $0x12345678, _d + 4(%rip)
+
+ movb %al, _d(%rip)
+ movb %al, _d + 1(%rip)
+ movl %eax, _d(%rip)
+ movl %eax, _d + 1(%rip)
+ movl %eax, _d + 2(%rip)
+ movl %eax, _d + 3(%rip)
+ movl %eax, _d + 4(%rip)
+
+// These have to use local relocations. Since that uses an offset into the
+// section in x86_64 (as opposed to a scattered relocation), and since the
+// linker can only decode this to an atom + offset by scanning the section,
+// it is not possible to correctly encode these without SIGNED<N>. This is
+// ultimately due to a design flaw in the x86_64 relocation format, it is
+// not possible to encode an address (L<foo> + <constant>) which is outside the
+// atom containing L<foo>.
+
+ // SIGNED1
+ movb $0x12, L0(%rip)
+
+ // SIGNED
+ movb $0x12, L0 + 1(%rip)
+
+ // SIGNED4
+ movl $0x12345678, L0(%rip)
+
+ // SIGNED
+ movl $0x12345678, L0 + 1(%rip)
+
+ // SIGNED2
+ movl $0x12345678, L0 + 2(%rip)
+
+ // SIGNED1
+ movl $0x12345678, L0 + 3(%rip)
+
+ // SIGNED
+ movl $0x12345678, L0 + 4(%rip)
+
+ movb %al, L0(%rip)
+ movb %al, L0 + 1(%rip)
+ movl %eax, L0(%rip)
+ movl %eax, L0 + 1(%rip)
+ movl %eax, L0 + 2(%rip)
+ movl %eax, L0 + 3(%rip)
+ movl %eax, L0 + 4(%rip)
+
+ // SIGNED1
+ movb $0x12, L1(%rip)
+
+ // SIGNED
+ movb $0x12, L1 + 1(%rip)
+
+ // SIGNED4
+ movl $0x12345678, L1(%rip)
+
+ // SIGNED
+ movl $0x12345678, L1 + 1(%rip)
+
+ // SIGNED2
+ movl $0x12345678, L1 + 2(%rip)
+
+ // SIGNED1
+ movl $0x12345678, L1 + 3(%rip)
+
+ // SIGNED
+ movl $0x12345678, L1 + 4(%rip)
+
+ movb %al, L1(%rip)
+ movb %al, L1 + 1(%rip)
+ movl %eax, L1(%rip)
+ movl %eax, L1 + 1(%rip)
+ movl %eax, L1 + 2(%rip)
+ movl %eax, L1 + 3(%rip)
+ movl %eax, L1 + 4(%rip)
+
+// CHECK: ('cputype', 16777223)
+// CHECK: ('cpusubtype', 3)
+// CHECK: ('filetype', 1)
+// CHECK: ('num_load_commands', 1)
+// CHECK: ('load_commands_size', 336)
+// CHECK: ('flag', 0)
+// CHECK: ('reserved', 0)
+// CHECK: ('load_commands', [
+// CHECK: # Load Command 0
+// CHECK: (('command', 25)
+// CHECK: ('size', 232)
+// CHECK: ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('vm_addr', 0)
+// CHECK: ('vm_size', 358)
+// CHECK: ('file_offset', 368)
+// CHECK: ('file_size', 358)
+// CHECK: ('maxprot', 7)
+// CHECK: ('initprot', 7)
+// CHECK: ('num_sections', 2)
+// CHECK: ('flags', 0)
+// CHECK: ('sections', [
+// CHECK: # Section 0
+// CHECK: (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 0)
+// CHECK: ('size', 318)
+// CHECK: ('offset', 368)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 728)
+// CHECK: ('num_reloc', 42)
+// CHECK: ('flags', 0x80000400)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ('reserved3', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: # Relocation 0
+// CHECK: (('word-0', 0x13a),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 1
+// CHECK: (('word-0', 0x134),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 2
+// CHECK: (('word-0', 0x12e),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 3
+// CHECK: (('word-0', 0x128),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 4
+// CHECK: (('word-0', 0x122),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 5
+// CHECK: (('word-0', 0x11c),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 6
+// CHECK: (('word-0', 0x116),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 7
+// CHECK: (('word-0', 0x10c),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 8
+// CHECK: (('word-0', 0x102),
+// CHECK: ('word-1', 0x6d000000)),
+// CHECK: # Relocation 9
+// CHECK: (('word-0', 0xf8),
+// CHECK: ('word-1', 0x7d000000)),
+// CHECK: # Relocation 10
+// CHECK: (('word-0', 0xee),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 11
+// CHECK: (('word-0', 0xe4),
+// CHECK: ('word-1', 0x8d000000)),
+// CHECK: # Relocation 12
+// CHECK: (('word-0', 0xdd),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 13
+// CHECK: (('word-0', 0xd6),
+// CHECK: ('word-1', 0x6d000000)),
+// CHECK: # Relocation 14
+// CHECK: (('word-0', 0xd0),
+// CHECK: ('word-1', 0x15000002)),
+// CHECK: # Relocation 15
+// CHECK: (('word-0', 0xca),
+// CHECK: ('word-1', 0x15000002)),
+// CHECK: # Relocation 16
+// CHECK: (('word-0', 0xc4),
+// CHECK: ('word-1', 0x15000002)),
+// CHECK: # Relocation 17
+// CHECK: (('word-0', 0xbe),
+// CHECK: ('word-1', 0x15000002)),
+// CHECK: # Relocation 18
+// CHECK: (('word-0', 0xb8),
+// CHECK: ('word-1', 0x15000002)),
+// CHECK: # Relocation 19
+// CHECK: (('word-0', 0xb2),
+// CHECK: ('word-1', 0x15000002)),
+// CHECK: # Relocation 20
+// CHECK: (('word-0', 0xac),
+// CHECK: ('word-1', 0x15000002)),
+// CHECK: # Relocation 21
+// CHECK: (('word-0', 0xa2),
+// CHECK: ('word-1', 0x15000002)),
+// CHECK: # Relocation 22
+// CHECK: (('word-0', 0x98),
+// CHECK: ('word-1', 0x65000002)),
+// CHECK: # Relocation 23
+// CHECK: (('word-0', 0x8e),
+// CHECK: ('word-1', 0x75000002)),
+// CHECK: # Relocation 24
+// CHECK: (('word-0', 0x84),
+// CHECK: ('word-1', 0x15000002)),
+// CHECK: # Relocation 25
+// CHECK: (('word-0', 0x7a),
+// CHECK: ('word-1', 0x85000002)),
+// CHECK: # Relocation 26
+// CHECK: (('word-0', 0x73),
+// CHECK: ('word-1', 0x15000002)),
+// CHECK: # Relocation 27
+// CHECK: (('word-0', 0x6c),
+// CHECK: ('word-1', 0x65000002)),
+// CHECK: # Relocation 28
+// CHECK: (('word-0', 0x66),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 29
+// CHECK: (('word-0', 0x60),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 30
+// CHECK: (('word-0', 0x5a),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 31
+// CHECK: (('word-0', 0x54),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 32
+// CHECK: (('word-0', 0x4e),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 33
+// CHECK: (('word-0', 0x48),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 34
+// CHECK: (('word-0', 0x42),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 35
+// CHECK: (('word-0', 0x38),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 36
+// CHECK: (('word-0', 0x2e),
+// CHECK: ('word-1', 0x6d000000)),
+// CHECK: # Relocation 37
+// CHECK: (('word-0', 0x24),
+// CHECK: ('word-1', 0x7d000000)),
+// CHECK: # Relocation 38
+// CHECK: (('word-0', 0x1a),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 39
+// CHECK: (('word-0', 0x10),
+// CHECK: ('word-1', 0x8d000000)),
+// CHECK: # Relocation 40
+// CHECK: (('word-0', 0x9),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 41
+// CHECK: (('word-0', 0x2),
+// CHECK: ('word-1', 0x6d000000)),
+// CHECK: ])
+// CHECK: ('_section_data', '\xc6\x05\xff\xff\xff\xff\x12\xc6\x05\x00\x00\x00\x00\x12\xc7\x05\xfc\xff\xff\xffxV4\x12\xc7\x05\xfd\xff\xff\xffxV4\x12\xc7\x05\xfe\xff\xff\xffxV4\x12\xc7\x05\xff\xff\xff\xffxV4\x12\xc7\x05\x00\x00\x00\x00xV4\x12\x88\x05\x00\x00\x00\x00\x88\x05\x01\x00\x00\x00\x89\x05\x00\x00\x00\x00\x89\x05\x01\x00\x00\x00\x89\x05\x02\x00\x00\x00\x89\x05\x03\x00\x00\x00\x89\x05\x04\x00\x00\x00\xc6\x05\xdd\x00\x00\x00\x12\xc6\x05\xd7\x00\x00\x00\x12\xc7\x05\xcc\x00\x00\x00xV4\x12\xc7\x05\xc3\x00\x00\x00xV4\x12\xc7\x05\xba\x00\x00\x00xV4\x12\xc7\x05\xb1\x00\x00\x00xV4\x12\xc7\x05\xa8\x00\x00\x00xV4\x12\x88\x05\x9e\x00\x00\x00\x88\x05\x99\x00\x00\x00\x89\x05\x92\x00\x00\x00\x89\x05\x8d\x00\x00\x00\x89\x05\x88\x00\x00\x00\x89\x05\x83\x00\x00\x00\x89\x05~\x00\x00\x00\xc6\x05\x03\x00\x00\x00\x12\xc6\x05\x04\x00\x00\x00\x12\xc7\x05\x00\x00\x00\x00xV4\x12\xc7\x05\x01\x00\x00\x00xV4\x12\xc7\x05\x02\x00\x00\x00xV4\x12\xc7\x05\x03\x00\x00\x00xV4\x12\xc7\x05\x04\x00\x00\x0
0xV4\x12\x88\x05\x04\x00\x00\x00\x88\x05\x05\x00\x00\x00\x89\x05\x04\x00\x00\x00\x89\x05\x05\x00\x00\x00\x89\x05\x06\x00\x00\x00\x89\x05\x07\x00\x00\x00\x89\x05\x08\x00\x00\x00')
+// CHECK: # Section 1
+// CHECK: (('section_name', '__data\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__DATA\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 318)
+// CHECK: ('size', 40)
+// CHECK: ('offset', 686)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 0)
+// CHECK: ('num_reloc', 0)
+// CHECK: ('flags', 0x0)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ('reserved3', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: ])
+// CHECK: ('_section_data', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 1
+// CHECK: (('command', 2)
+// CHECK: ('size', 24)
+// CHECK: ('symoff', 1064)
+// CHECK: ('nsyms', 1)
+// CHECK: ('stroff', 1080)
+// CHECK: ('strsize', 4)
+// CHECK: ('_string_data', '\x00_d\x00')
+// CHECK: ('_symbols', [
+// CHECK: # Symbol 0
+// CHECK: (('n_strx', 1)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 2)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 350)
+// CHECK: ('_string', '_d')
+// CHECK: ),
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 2
+// CHECK: (('command', 11)
+// CHECK: ('size', 80)
+// CHECK: ('ilocalsym', 0)
+// CHECK: ('nlocalsym', 1)
+// CHECK: ('iextdefsym', 1)
+// CHECK: ('nextdefsym', 0)
+// CHECK: ('iundefsym', 1)
+// CHECK: ('nundefsym', 0)
+// CHECK: ('tocoff', 0)
+// CHECK: ('ntoc', 0)
+// CHECK: ('modtaboff', 0)
+// CHECK: ('nmodtab', 0)
+// CHECK: ('extrefsymoff', 0)
+// CHECK: ('nextrefsyms', 0)
+// CHECK: ('indirectsymoff', 0)
+// CHECK: ('nindirectsyms', 0)
+// CHECK: ('extreloff', 0)
+// CHECK: ('nextrel', 0)
+// CHECK: ('locreloff', 0)
+// CHECK: ('nlocrel', 0)
+// CHECK: ('_indirect_symbols', [
+// CHECK: ])
+// CHECK: ),
+// CHECK: ])
Added: llvm/trunk/test/MC/MachO/darwin-x86_64-reloc.s
URL: http://llvm.org/viewvc/llvm-project/llvm/trunk/test/MC/MachO/darwin-x86_64-reloc.s?rev=98974&view=auto
==============================================================================
--- llvm/trunk/test/MC/MachO/darwin-x86_64-reloc.s (added)
+++ llvm/trunk/test/MC/MachO/darwin-x86_64-reloc.s Fri Mar 19 13:07:55 2010
@@ -0,0 +1,229 @@
+// RUN: llvm-mc -triple x86_64-apple-darwin9 %s -filetype=obj -o - | macho-dump --dump-section-data | FileCheck %s
+
+// These examples are taken from <mach-o/x86_64/reloc.h>.
+
+ .text
+_foo:
+ ret
+
+_baz:
+ call _foo
+ call _foo+4
+ movq _foo at GOTPCREL(%rip), %rax
+ pushq _foo at GOTPCREL(%rip)
+ movl _foo(%rip), %eax
+ movl _foo+4(%rip), %eax
+ movb $0x12, _foo(%rip)
+ movl $0x12345678, _foo(%rip)
+ .quad _foo
+_bar:
+ .quad _foo+4
+ .quad _foo - _bar
+ .quad _foo - _bar + 4
+ .long _foo - _bar
+ leaq L1(%rip), %rax
+ leaq L0(%rip), %rax
+ addl $6,L0(%rip)
+ addw $500,L0(%rip)
+ addl $500,L0(%rip)
+
+_prev:
+ .space 12,0x90
+ .quad L1
+L0:
+ .quad L0
+L_pc:
+ .quad _foo - L_pc
+ .quad _foo - L1
+L1:
+ .quad L1 - _prev
+
+// CHECK: ('cputype', 16777223)
+// CHECK: ('cpusubtype', 3)
+// CHECK: ('filetype', 1)
+// CHECK: ('num_load_commands', 1)
+// CHECK: ('load_commands_size', 256)
+// CHECK: ('flag', 0)
+// CHECK: ('reserved', 0)
+// CHECK: ('load_commands', [
+// CHECK: # Load Command 0
+// CHECK: (('command', 25)
+// CHECK: ('size', 152)
+// CHECK: ('segment_name', '\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('vm_addr', 0)
+// CHECK: ('vm_size', 181)
+// CHECK: ('file_offset', 288)
+// CHECK: ('file_size', 181)
+// CHECK: ('maxprot', 7)
+// CHECK: ('initprot', 7)
+// CHECK: ('num_sections', 1)
+// CHECK: ('flags', 0)
+// CHECK: ('sections', [
+// CHECK: # Section 0
+// CHECK: (('section_name', '__text\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('segment_name', '__TEXT\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ('address', 0)
+// CHECK: ('size', 181)
+// CHECK: ('offset', 288)
+// CHECK: ('alignment', 0)
+// CHECK: ('reloc_offset', 472)
+// CHECK: ('num_reloc', 27)
+// CHECK: ('flags', 0x80000400)
+// CHECK: ('reserved1', 0)
+// CHECK: ('reserved2', 0)
+// CHECK: ('reserved3', 0)
+// CHECK: ),
+// CHECK: ('_relocations', [
+// CHECK: # Relocation 0
+// CHECK: (('word-0', 0xa5),
+// CHECK: ('word-1', 0x5e000003)),
+// CHECK: # Relocation 1
+// CHECK: (('word-0', 0xa5),
+// CHECK: ('word-1', 0xe000000)),
+// CHECK: # Relocation 2
+// CHECK: (('word-0', 0x9d),
+// CHECK: ('word-1', 0x5e000003)),
+// CHECK: # Relocation 3
+// CHECK: (('word-0', 0x9d),
+// CHECK: ('word-1', 0xe000000)),
+// CHECK: # Relocation 4
+// CHECK: (('word-0', 0x95),
+// CHECK: ('word-1', 0xe000003)),
+// CHECK: # Relocation 5
+// CHECK: (('word-0', 0x8d),
+// CHECK: ('word-1', 0xe000003)),
+// CHECK: # Relocation 6
+// CHECK: (('word-0', 0x79),
+// CHECK: ('word-1', 0x8d000003)),
+// CHECK: # Relocation 7
+// CHECK: (('word-0', 0x71),
+// CHECK: ('word-1', 0x7d000003)),
+// CHECK: # Relocation 8
+// CHECK: (('word-0', 0x69),
+// CHECK: ('word-1', 0x6d000003)),
+// CHECK: # Relocation 9
+// CHECK: (('word-0', 0x63),
+// CHECK: ('word-1', 0x1d000003)),
+// CHECK: # Relocation 10
+// CHECK: (('word-0', 0x5c),
+// CHECK: ('word-1', 0x1d000003)),
+// CHECK: # Relocation 11
+// CHECK: (('word-0', 0x55),
+// CHECK: ('word-1', 0x5c000002)),
+// CHECK: # Relocation 12
+// CHECK: (('word-0', 0x55),
+// CHECK: ('word-1', 0xc000000)),
+// CHECK: # Relocation 13
+// CHECK: (('word-0', 0x4d),
+// CHECK: ('word-1', 0x5e000002)),
+// CHECK: # Relocation 14
+// CHECK: (('word-0', 0x4d),
+// CHECK: ('word-1', 0xe000000)),
+// CHECK: # Relocation 15
+// CHECK: (('word-0', 0x45),
+// CHECK: ('word-1', 0x5e000002)),
+// CHECK: # Relocation 16
+// CHECK: (('word-0', 0x45),
+// CHECK: ('word-1', 0xe000000)),
+// CHECK: # Relocation 17
+// CHECK: (('word-0', 0x3d),
+// CHECK: ('word-1', 0xe000000)),
+// CHECK: # Relocation 18
+// CHECK: (('word-0', 0x35),
+// CHECK: ('word-1', 0xe000000)),
+// CHECK: # Relocation 19
+// CHECK: (('word-0', 0x2d),
+// CHECK: ('word-1', 0x8d000000)),
+// CHECK: # Relocation 20
+// CHECK: (('word-0', 0x26),
+// CHECK: ('word-1', 0x6d000000)),
+// CHECK: # Relocation 21
+// CHECK: (('word-0', 0x20),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 22
+// CHECK: (('word-0', 0x1a),
+// CHECK: ('word-1', 0x1d000000)),
+// CHECK: # Relocation 23
+// CHECK: (('word-0', 0x14),
+// CHECK: ('word-1', 0x4d000000)),
+// CHECK: # Relocation 24
+// CHECK: (('word-0', 0xe),
+// CHECK: ('word-1', 0x3d000000)),
+// CHECK: # Relocation 25
+// CHECK: (('word-0', 0x7),
+// CHECK: ('word-1', 0x2d000000)),
+// CHECK: # Relocation 26
+// CHECK: (('word-0', 0x2),
+// CHECK: ('word-1', 0x2d000000)),
+// CHECK: ])
+// CHECK: ('_section_data', '\xc3\xe8\x00\x00\x00\x00\xe8\x04\x00\x00\x00H\x8b\x05\x00\x00\x00\x00\xff5\x00\x00\x00\x00\x8b\x05\x00\x00\x00\x00\x8b\x05\x04\x00\x00\x00\xc6\x05\xff\xff\xff\xff\x12\xc7\x05\xfc\xff\xff\xffxV4\x12\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00H\x8d\x05,\x00\x00\x00H\x8d\x05\x14\x00\x00\x00\x83\x05\x13\x00\x00\x00\x06f\x81\x05\x12\x00\x00\x00\xf4\x01\x81\x05\x10\x00\x00\x00\xf4\x01\x00\x00\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90\x90,\x00\x00\x00\x00\x00\x00\x00\x14\x00\x00\x00\x00\x00\x00\x00\xe4\xff\xff\xff\xff\xff\xff\xff\xd4\xff\xff\xff\xff\xff\xff\xff,\x00\x00\x00\x00\x00\x00\x00')
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 1
+// CHECK: (('command', 2)
+// CHECK: ('size', 24)
+// CHECK: ('symoff', 688)
+// CHECK: ('nsyms', 4)
+// CHECK: ('stroff', 752)
+// CHECK: ('strsize', 24)
+// CHECK: ('_string_data', '\x00_foo\x00_baz\x00_bar\x00_prev\x00\x00\x00')
+// CHECK: ('_symbols', [
+// CHECK: # Symbol 0
+// CHECK: (('n_strx', 1)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 1)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 0)
+// CHECK: ('_string', '_foo')
+// CHECK: ),
+// CHECK: # Symbol 1
+// CHECK: (('n_strx', 6)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 1)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 1)
+// CHECK: ('_string', '_baz')
+// CHECK: ),
+// CHECK: # Symbol 2
+// CHECK: (('n_strx', 11)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 1)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 61)
+// CHECK: ('_string', '_bar')
+// CHECK: ),
+// CHECK: # Symbol 3
+// CHECK: (('n_strx', 16)
+// CHECK: ('n_type', 0xe)
+// CHECK: ('n_sect', 1)
+// CHECK: ('n_desc', 0)
+// CHECK: ('n_value', 129)
+// CHECK: ('_string', '_prev')
+// CHECK: ),
+// CHECK: ])
+// CHECK: ),
+// CHECK: # Load Command 2
+// CHECK: (('command', 11)
+// CHECK: ('size', 80)
+// CHECK: ('ilocalsym', 0)
+// CHECK: ('nlocalsym', 4)
+// CHECK: ('iextdefsym', 4)
+// CHECK: ('nextdefsym', 0)
+// CHECK: ('iundefsym', 4)
+// CHECK: ('nundefsym', 0)
+// CHECK: ('tocoff', 0)
+// CHECK: ('ntoc', 0)
+// CHECK: ('modtaboff', 0)
+// CHECK: ('nmodtab', 0)
+// CHECK: ('extrefsymoff', 0)
+// CHECK: ('nextrefsyms', 0)
+// CHECK: ('indirectsymoff', 0)
+// CHECK: ('nindirectsyms', 0)
+// CHECK: ('extreloff', 0)
+// CHECK: ('nextrel', 0)
+// CHECK: ('locreloff', 0)
+// CHECK: ('nlocrel', 0)
+// CHECK: ('_indirect_symbols', [
+// CHECK: ])
+// CHECK: ),
+// CHECK: ])
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