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|
# RUN: ld64.lld -arch x86_64 -r %s -o %t -print_atoms | FileCheck %s \
# RUN: && ld64.lld -arch x86_64 %t -r -print_atoms -o %t2 | FileCheck %s
#
# Test parsing and writing of x86_64 data relocations.
#
# The first step tests if the supplied mach-o file is parsed into the correct
# set of references. The second step verifies relocations can be round-tripped
# by writing to a new .o file, then parsing that file which should result in
# the same references.
#
#_foo:
# ret
#
#_bar:
# ret
#
# .section __DATA,__custom
#L1:
# .quad 0
#
# .data
#_d:
# .quad _foo
# .quad _foo+4
# .quad _foo - .
# .quad L1
# .quad L1 + 2
# .quad _foo - .
# .quad _foo + 4 - .
# .quad L1 - .
# .long _foo - .
# .long _foo + 4 - .
# .long L1 - .
#
--- !mach-o
arch: x86_64
file-type: MH_OBJECT
flags: [ ]
compat-version: 0.0
current-version: 0.0
has-UUID: false
OS: unknown
sections:
- segment: __TEXT
section: __text
type: S_REGULAR
attributes: [ S_ATTR_PURE_INSTRUCTIONS, S_ATTR_SOME_INSTRUCTIONS ]
address: 0x0000000000000000
content: [ 0xC3, 0xC3 ]
- segment: __DATA
section: __custom
type: S_REGULAR
attributes: [ ]
address: 0x0000000000000002
content: [ 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ]
- segment: __DATA
section: __data
type: S_REGULAR
attributes: [ ]
address: 0x000000000000000A
content: [
# .quad _foo
# No addend is needed here as we are referencing _foo directly and that is
# encoded entirely in the X86_64_RELOC_UNSIGNED
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
# .quad _foo+4
# Addend of 4 is needed here as we are referencing _foo from the
# X86_64_RELOC_UNSIGNED, then the addend gives us 4 more.
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
# .quad _foo - .
# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED.
# The subtractor references _d which is the first nonlocal label in this
# section. The unsigned references _foo.
# Note the addend here is -16 because that is the offset from here back
# to _d.
0xF0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
# .quad . - _foo
# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED.
# The subtractor references _d which is the first nonlocal label in this
# section. The unsigned references _foo.
# Note the addend here is -16 because that is the offset from here back
# to _d.
0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
# .quad L1
# This is a X86_64_RELOC_UNSIGNED without extern set.
# In this case, we encode the section number for L1 in the relocation, and
# the addend here is the absolute address of the location in that section
# we want to reference.
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
# .quad L1 + 2
# This is a X86_64_RELOC_UNSIGNED without extern set.
# In this case, we encode the section number for L1 in the relocation, and
# the addend here is the absolute address of the location in that section
# we want to reference. We have a 4 because the section is at address 2
# and we want an offset of 2 from there.
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
# .quad _foo - .
# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED.
# The subtractor references _d which is the first nonlocal label in this
# section. The unsigned references _foo.
# Note the addend here is -40 because that is the offset from here back
# to _d.
0xD0, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
# .quad _foo + 4 - .
# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED.
# The subtractor references _d which is the first nonlocal label in this
# section. The unsigned references _foo.
# Note the addend here is -52. It would have been -56 because that
# would take us from the address of this relocation back to _d. But as
# we also add 4 for the offset, we get -52.
0xCC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
# .quad L1 - .
# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED.
# The subtractor references _d which is the first nonlocal label in this
# section. The unsigned does not have extern set, so the relocation
# number is the section number for L1.
# Note the addend here is -62. Of that, -64 would be the offset from
# this location from _d. The remaining 2 is the absolute address
# of L1.
0xC2, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF,
# .long _foo - .
# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED.
# The subtractor references _d which is the first nonlocal label in this
# section. The unsigned references _foo.
# Note the addend here is -72 because that is the offset from here back
# to _d.
0xB8, 0xFF, 0xFF, 0xFF,
# .long . - _foo
# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED.
# The subtractor references _d which is the first nonlocal label in this
# section. The unsigned references _foo.
# Note the addend here is -76 because that is the offset from here back
# to _d.
0xB4, 0xFF, 0xFF, 0xFF,
# .long _foo + 4 - .
# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED.
# The subtractor references _d which is the first nonlocal label in this
# section. The unsigned references _foo.
# Note the addend here is -76. It would have been -80 because that
# would take us from the address of this relocation back to _d. But as
# we also add 4 for the offset, we get -76.
0xB4, 0xFF, 0xFF, 0xFF,
# .long L1 - .
# This is the pair X86_64_RELOC_SUBTRACTOR and X86_64_RELOC_UNSIGNED.
# The subtractor references _d which is the first nonlocal label in this
# section. The unsigned does not have extern set, so the relocation
# number is the section number for L1.
# Note the addend here is -82. Of that, -84 would be the offset from
# this location from _d. The remaining 2 is the absolute address
# of L1.
0xAE, 0xFF, 0xFF, 0xFF ]
relocations:
- offset: 0x00000054
type: X86_64_RELOC_SUBTRACTOR
length: 2
pc-rel: false
extern: true
symbol: 2
- offset: 0x00000054
type: X86_64_RELOC_UNSIGNED
length: 2
pc-rel: false
extern: false
symbol: 2
- offset: 0x00000050
type: X86_64_RELOC_SUBTRACTOR
length: 2
pc-rel: false
extern: true
symbol: 2
- offset: 0x00000050
type: X86_64_RELOC_UNSIGNED
length: 2
pc-rel: false
extern: true
symbol: 0
- offset: 0x0000004C
type: X86_64_RELOC_SUBTRACTOR
length: 2
pc-rel: false
extern: true
symbol: 0
- offset: 0x0000004C
type: X86_64_RELOC_UNSIGNED
length: 2
pc-rel: false
extern: true
symbol: 2
- offset: 0x00000048
type: X86_64_RELOC_SUBTRACTOR
length: 2
pc-rel: false
extern: true
symbol: 2
- offset: 0x00000048
type: X86_64_RELOC_UNSIGNED
length: 2
pc-rel: false
extern: true
symbol: 0
- offset: 0x00000040
type: X86_64_RELOC_SUBTRACTOR
length: 3
pc-rel: false
extern: true
symbol: 2
- offset: 0x00000040
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: false
symbol: 2
- offset: 0x00000038
type: X86_64_RELOC_SUBTRACTOR
length: 3
pc-rel: false
extern: true
symbol: 2
- offset: 0x00000038
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: true
symbol: 0
- offset: 0x00000030
type: X86_64_RELOC_SUBTRACTOR
length: 3
pc-rel: false
extern: true
symbol: 2
- offset: 0x00000030
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: true
symbol: 0
- offset: 0x00000028
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: false
symbol: 2
- offset: 0x00000020
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: false
symbol: 2
- offset: 0x00000018
type: X86_64_RELOC_SUBTRACTOR
length: 3
pc-rel: false
extern: true
symbol: 0
- offset: 0x00000018
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: true
symbol: 2
- offset: 0x00000010
type: X86_64_RELOC_SUBTRACTOR
length: 3
pc-rel: false
extern: true
symbol: 2
- offset: 0x00000010
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: true
symbol: 0
- offset: 0x00000008
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: true
symbol: 0
- offset: 0x00000000
type: X86_64_RELOC_UNSIGNED
length: 3
pc-rel: false
extern: true
symbol: 0
local-symbols:
- name: _foo
type: N_SECT
sect: 1
value: 0x0000000000000000
- name: _bar
type: N_SECT
sect: 1
value: 0x0000000000000001
- name: _d
type: N_SECT
sect: 3
value: 0x000000000000000A
page-size: 0x00000000
...
# CHECK:defined-atoms:
# CHECK: - name: _d
# CHECK: type: data
# CHECK: content: [ 00, 00, 00, 00, 00, 00, 00, 00, 04, 00, 00, 00,
# CHECK: 00, 00, 00, 00, F0, FF, FF, FF, FF, FF, FF, FF,
# CHECK: 18, 00, 00, 00, 00, 00, 00, 00, {{..}}, {{..}}, 00, 00,
# CHECK: 00, 00, 00, 00, {{..}}, {{..}}, 00, 00, 00, 00, 00, 00,
# CHECK: D0, FF, FF, FF, FF, FF, FF, FF, CC, FF, FF, FF,
# CHECK: FF, FF, FF, FF, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, {{..}}, {{..}},
# CHECK: B8, FF, FF, FF, B4, FF, FF, FF, B4, FF, FF, FF,
# CHECK: {{..}}, {{..}}, {{..}}, {{..}} ]
# CHECK: dead-strip: never
# CHECK: references:
# CHECK: - kind: pointer64
# CHECK: offset: 0
# CHECK: target: _foo
# CHECK: - kind: pointer64
# CHECK: offset: 8
# CHECK: target: _foo
# CHECK: addend: 4
# CHECK: - kind: delta64
# CHECK: offset: 16
# CHECK: target: _foo
# CHECK: - kind: negDelta64
# CHECK: offset: 24
# CHECK: target: _foo
# CHECK: - kind: pointer64Anon
# CHECK: offset: 32
# CHECK: target: L003
# CHECK: - kind: pointer64Anon
# CHECK: offset: 40
# CHECK: target: L003
# CHECK: addend: 2
# CHECK: - kind: delta64
# CHECK: offset: 48
# CHECK: target: _foo
# CHECK: - kind: delta64
# CHECK: offset: 56
# CHECK: target: _foo
# CHECK: addend: 4
# CHECK: - kind: delta64Anon
# CHECK: offset: 64
# CHECK: target: L003
# CHECK: - kind: delta32
# CHECK: offset: 72
# CHECK: target: _foo
# CHECK: - kind: negDelta32
# CHECK: offset: 76
# CHECK: target: _foo
# CHECK: - kind: delta32
# CHECK: offset: 80
# CHECK: target: _foo
# CHECK: addend: 4
# CHECK: - kind: delta32Anon
# CHECK: offset: 84
# CHECK: target: L003
# CHECK: - name: _foo
# CHECK: content: [ C3 ]
# CHECK: dead-strip: never
# CHECK: - name: _bar
# CHECK: content: [ C3 ]
# CHECK: dead-strip: never
# CHECK: - ref-name: L003
# CHECK: type: unknown
# CHECK: content: [ 00, 00, 00, 00, 00, 00, 00, 00 ]
# CHECK: section-choice: custom-required
# CHECK: section-name: '__DATA/__custom'
# CHECK: dead-strip: never
|