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
101 lines
2.9 KiB
YAML
101 lines
2.9 KiB
YAML
# RUN: ld64.lld.darwinold -arch x86_64 -r %s -o %t
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# RUN: ld64.lld.darwinold -arch x86_64 -r %t -print_atoms -o %t2 | FileCheck %s
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#
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# Test parsing of mach-o functions.
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#
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--- !mach-o
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arch: x86_64
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file-type: MH_OBJECT
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flags: [ MH_SUBSECTIONS_VIA_SYMBOLS ]
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has-UUID: false
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OS: unknown
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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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alignment: 4
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address: 0x0000000000000000
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content: [ 0xCC, 0xC3, 0x90, 0xC3, 0x90, 0x90, 0xC3, 0x90,
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0x90, 0x90, 0xC3, 0x90, 0x90, 0x90, 0x90, 0xC3,
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0xCC, 0x31, 0xC0, 0xC3 ]
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local-symbols:
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- name: _myStatic
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type: N_SECT
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sect: 1
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value: 0x000000000000000B
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global-symbols:
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- name: _myGlobal
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type: N_SECT
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scope: [ N_EXT ]
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sect: 1
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value: 0x0000000000000001
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- name: _myGlobalWeak
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type: N_SECT
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scope: [ N_EXT ]
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sect: 1
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desc: [ N_WEAK_DEF ]
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value: 0x0000000000000002
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- name: _myHidden
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type: N_SECT
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scope: [ N_EXT, N_PEXT ]
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sect: 1
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value: 0x0000000000000004
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- name: _myHiddenWeak
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type: N_SECT
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scope: [ N_EXT, N_PEXT ]
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sect: 1
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desc: [ N_WEAK_DEF ]
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value: 0x0000000000000007
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- name: _myStripNot
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type: N_SECT
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scope: [ N_EXT ]
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sect: 1
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desc: [ N_NO_DEAD_STRIP ]
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value: 0x0000000000000010
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- name: _myResolver
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type: N_SECT
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scope: [ N_EXT ]
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sect: 1
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desc: [ N_SYMBOL_RESOLVER ]
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value: 0x0000000000000011
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...
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# CHECK-NOT: name:
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# CHECK: content: [ CC ]
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# CHECK: name: _myGlobal
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# CHECK: scope: global
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# CHECK: content: [ C3 ]
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# CHECK: name: _myGlobalWeak
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# CHECK: scope: global
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# CHECK: content: [ 90, C3 ]
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# CHECK: merge: as-weak
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# CHECK: name: _myHidden
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# CHECK: scope: hidden
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# CHECK: content: [ 90, 90, C3 ]
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# CHECK: name: _myHiddenWeak
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# CHECK: scope: hidden
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# CHECK: content: [ 90, 90, 90, C3 ]
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# CHECK: merge: as-weak
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# CHECK: name: _myStatic
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# CHECK-NOT: scope: global
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# CHECK-NOT: scope: hidden
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# CHECK: content: [ 90, 90, 90, 90, C3 ]
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# CHECK: name: _myStripNot
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# CHECK: scope: global
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# CHECK: content: [ CC ]
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# CHECK: dead-strip: never
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# CHECK: name: _myResolver
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# CHECK: scope: global
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# CHECK: type: resolver
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# CHECK: content: [ 31, C0, C3 ]
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