415c0cd698
The new Darwin backend for LLD is now able to link reasonably large real-world programs on x86_64. For instance, we have achieved self-hosting for the X86_64 target, where all LLD tests pass when building lld with itself on macOS. As such, we would like to make it the default back-end. The new port is now named `ld64.lld`, and the old port remains accessible as `ld64.lld.darwinold` This [annoucement email][1] has some context. (But note that, unlike what the email says, we are no longer doing this as part of the LLVM 12 branch cut -- instead we will go into LLVM 13.) Numerous mechanical test changes were required to make this change; in the interest of creating something that's reviewable on Phabricator, I've split out the boring changes into a separate diff (D95905). I plan to merge its contents with those in this diff before landing. (@gkm made the original draft of this diff, and he has agreed to let me take over.) [1]: https://lists.llvm.org/pipermail/llvm-dev/2021-January/147665.html Reviewed By: #lld-macho, thakis Differential Revision: https://reviews.llvm.org/D95204
78 lines
1.8 KiB
YAML
78 lines
1.8 KiB
YAML
# RUN: ld64.lld.darwinold -arch i386 -r -print_atoms %s -o %t | FileCheck %s \
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# RUN: && ld64.lld.darwinold -arch i386 -r -print_atoms %t -o %t2 | FileCheck %s
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#
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# Test parsing LC_DATA_IN_CODE
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#
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#
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--- !mach-o
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arch: x86
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file-type: MH_OBJECT
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flags: [ MH_SUBSECTIONS_VIA_SYMBOLS ]
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sections:
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- segment: __TEXT
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section: __text
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type: S_REGULAR
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attributes: [ S_ATTR_PURE_INSTRUCTIONS, S_ATTR_SOME_INSTRUCTIONS ]
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address: 0x0000000000000000
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content: [ 0x90, 0x90, 0x01, 0x00, 0x00, 0x00, 0x02, 0x00,
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0x00, 0x00, 0x90, 0x90, 0x90, 0x90, 0x03, 0x00,
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0x00, 0x00 ]
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local-symbols:
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- name: _func1
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type: N_SECT
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sect: 1
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value: 0x0000000000000000
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- name: _func2
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type: N_SECT
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sect: 1
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value: 0x000000000000000B
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dataInCode:
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- offset: 0x00000002
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length: 0x0008
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kind: DICE_KIND_JUMP_TABLE32
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- offset: 0x0000000E
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length: 0x0004
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kind: DICE_KIND_JUMP_TABLE32
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...
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# CHECK: defined-atoms:
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# CHECK: - name: _func1
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# CHECK: references:
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# CHECK: - kind: modeData
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# CHECK: offset: 2
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# CHECK: addend: 4
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# CHECK: - kind: modeCode
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# CHECK: offset: 10
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# CHECK: - name: _func2
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# CHECK: references:
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# CHECK: - kind: modeData
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# CHECK: offset: 3
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# CHECK: addend: 4
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# CHECK-NOT: - kind: modeData
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#
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#_func1:
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# nop
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# nop
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# .data_region jt32
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# .long 1
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# .long 2
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# .end_data_region
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# nop
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#
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#
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# _func2:
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# nop
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# nop
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# nop
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# .data_region jt32
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# .long 3
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# .end_data_region
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#
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