test/mach-o/arm-shims.yaml

# RUN: ld64.lld.darwinold -arch armv7 %s %p/Inputs/arm-shims.yaml \
# RUN: -dylib %p/Inputs/armv7/libSystem.yaml -o %t
# RUN: llvm-readobj -S --section-data %t | FileCheck %s
#
# Test b from arm to thumb or vice versa has shims added.s
#
#

--- !mach-o
arch:            armv7
file-type:       MH_OBJECT
flags:           [ MH_SUBSECTIONS_VIA_SYMBOLS ]
sections:
  - segment:         __TEXT
    section:         __text
    type:            S_REGULAR
    attributes:      [ S_ATTR_PURE_INSTRUCTIONS, S_ATTR_SOME_INSTRUCTIONS ]
    alignment:       2
    address:         0x0000000000000000
    content:         [ 0x00, 0xBF, 0xFF, 0xF7, 0xFE, 0xEF, 0xFF, 0xF7,
                       0xFB, 0xBF, 0x00, 0x00, 0x00, 0xF0, 0x20, 0xE3,
                       0xFA, 0xFF, 0xFF, 0xFA, 0xF9, 0xFF, 0xFF, 0xEA ]
    relocations:
      - offset:          0x00000014
        type:            ARM_RELOC_BR24
        length:          2
        pc-rel:          true
        extern:          true
        symbol:          3
      - offset:          0x00000010
        type:            ARM_RELOC_BR24
        length:          2
        pc-rel:          true
        extern:          true
        symbol:          3
      - offset:          0x00000006
        type:            ARM_THUMB_RELOC_BR22
        length:          2
        pc-rel:          true
        extern:          true
        symbol:          2
      - offset:          0x00000002
        type:            ARM_THUMB_RELOC_BR22
        length:          2
        pc-rel:          true
        extern:          true
        symbol:          2
global-symbols:
  - name:            _a1
    type:            N_SECT
    scope:           [ N_EXT ]
    sect:            1
    value:           0x000000000000000C
  - name:            _t1
    type:            N_SECT
    scope:           [ N_EXT ]
    sect:            1
    desc:            [ N_ARM_THUMB_DEF ]
    value:           0x0000000000000000
undefined-symbols:
  - name:            _a2
    type:            N_UNDF
    scope:           [ N_EXT ]
    value:           0x0000000000000000
  - name:            _t2
    type:            N_UNDF
    scope:           [ N_EXT ]
    value:           0x0000000000000000

...

# CHECK:   Section {
# CHECK:     Name: __text (5F 5F 74 65 78 74 00 00 00 00 00 00 00 00 00 00)
# CHECK:     Segment: __TEXT (5F 5F 54 45 58 54 00 00 00 00 00 00 00 00 00 00)
# CHECK:     SectionData (
# CHECK:       0000: 00BF00F0 10E800F0 19B80000 00F020E3
# CHECK:       0010: 000000FA 0F0000EA 00BFFFF7 F8EF00F0
# CHECK:       0020: 07B80000 00F020E3 F4FFFFFA 050000EA
# CHECK:       0030: DFF804C0 FF446047 D4FFFFFF DFF804C0
# CHECK:       0040: FF446047 E0FFFFFF 04C09FE5 0CC08FE0
# CHECK:       0050: 1CFF2FE1 ADFFFFFF 04C09FE5 0CC08FE0
# CHECK:       0060: 1CFF2FE1 B5FFFFFF
# CHECK:     )

# When we get a good mach-o disassembler the above __text section content check can be change to be symbolic.


# Input file one:
#
#	.align	2
#	.code	16
#  .globl _t1
#  .thumb_func	_t1
#_t1:
#    nop
#    blx _a2
#    b   _a2
#
#	.code	32
#  .align 2
#  .globl _a1
#_a1:
#    nop
#    blx _t2
#    b   _t2



# Input file two:
#
#	.align	2
#	.code	16
#  .globl _t2
#  .thumb_func	_t2
#_t2:
#    nop
#    blx _a1
#    b   _a1
#
#	.code	32
#  .align 2
#  .globl _a2
#_a2:
#    nop
#    blx _t1
#    b   _t1