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. :)

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@98974 91177308-0d34-0410-b5e6-96231b3b80d8

1 files changed, 229 insertions, 0 deletions

diff --git a/test/MC/MachO/darwin-x86_64-reloc.s b/test/MC/MachO/darwin-x86_64-reloc.s
new file mode 100644
index 0000000..6b325b0
--- /dev/null
+++ b/test/MC/MachO/darwin-x86_64-reloc.s
@@ -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@GOTPCREL(%rip), %rax
+ 	pushq _foo@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: ])