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llvm-mirror/test/MC/MachO/darwin-x86_64-diff-relocs.s
Daniel Dunbar 3c66c7a3c1 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. :)

llvm-svn: 98974
2010-03-19 18:07:55 +00:00

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// 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: ])
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