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
120 lines
3.4 KiB
YAML
120 lines
3.4 KiB
YAML
# RUN: ld64.lld.darwinold -arch x86_64 -r -print_atoms %s -o %t | FileCheck %s
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#
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# Test parsing of mach-o data symbols.
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#
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# long a = 0x0807060504030201;
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# int b = 0x14131211;
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# int c = 0x24232221;
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# static int s1;
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# static int s2 = 0x34333231;
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#
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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: __DATA
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section: __data
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type: S_REGULAR
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attributes: [ ]
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alignment: 8
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address: 0x0000000000000000
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content: [ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08,
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0x11, 0x12, 0x13, 0x14, 0x21, 0x22, 0x23, 0x24,
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0x31, 0x32, 0x33, 0x34, 0x41, 0x42, 0x43, 0x44 ]
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- segment: __CUST
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section: __custom
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type: S_REGULAR
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attributes: [ ]
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alignment: 8
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address: 0x0000000000000018
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content: [ 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 ]
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- segment: __DATA
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section: __bss
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type: S_ZEROFILL
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attributes: [ ]
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alignment: 2
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address: 0x0000000000000020
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size: 4
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local-symbols:
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- name: _s1
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type: N_SECT
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sect: 3
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value: 0x0000000000000020
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- name: _s2
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type: N_SECT
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sect: 1
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value: 0x0000000000000010
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global-symbols:
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- name: _a
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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: 0x0000000000000000
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- name: _b
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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: 0x0000000000000008
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- name: _c
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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: 0x000000000000000C
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- name: _cWeak
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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: 0x0000000000000014
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- name: _kustom
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type: N_SECT
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scope: [ N_EXT ]
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sect: 2
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value: 0x0000000000000018
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...
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# CHECK: defined-atoms:
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# CHECK: - name: _a
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# CHECK: scope: global
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# CHECK: type: data
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# CHECK: content: [ 01, 02, 03, 04, 05, 06, 07, 08 ]
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# CHECK: - name: _b
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# CHECK: scope: global
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# CHECK: type: data
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# CHECK: content: [ 11, 12, 13, 14 ]
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# CHECK: - name: _c
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# CHECK: scope: global
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# CHECK: type: data
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# CHECK: content: [ 21, 22, 23, 24 ]
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# CHECK: - name: _s2
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# CHECK: type: data
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# CHECK: content: [ 31, 32, 33, 34 ]
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# CHECK: - name: _cWeak
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# CHECK: scope: global
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# CHECK: type: data
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# CHECK: content: [ 41, 42, 43, 44 ]
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# CHECK: merge: as-weak
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# CHECK: - name: _s1
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# CHECK: type: zero-fill
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# CHECK: size: 4
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# CHECK: - name: _kustom
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# CHECK: scope: global
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# CHECK: type: unknown
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# CHECK: content: [ 01, 02, 03, 04, 05, 06, 07, 08 ]
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# CHECK: section-choice: custom-required
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# CHECK: section-name: '__CUST/__custom'
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