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
140 lines
5.0 KiB
YAML
140 lines
5.0 KiB
YAML
# RUN: ld64.lld.darwinold -arch arm64 %s %p/Inputs/hello-world-arm64.yaml -o %t
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# RUN: obj2yaml %t | FileCheck %s
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#
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--- !mach-o
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arch: arm64
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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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alignment: 2
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address: 0x0000000000000000
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content: [ 0xFD, 0x7B, 0xBF, 0xA9, 0xFD, 0x03, 0x00, 0x91,
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0x08, 0x00, 0x00, 0x90, 0x08, 0x01, 0x40, 0xF9,
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0x00, 0x01, 0x40, 0xF9, 0x01, 0x00, 0x00, 0x90,
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0x21, 0x00, 0x00, 0x91, 0x00, 0x00, 0x00, 0x94,
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0x00, 0x00, 0x80, 0x52, 0xFD, 0x7B, 0xC1, 0xA8,
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0xC0, 0x03, 0x5F, 0xD6 ]
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relocations:
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- offset: 0x0000001C
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type: ARM64_RELOC_BRANCH26
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length: 2
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pc-rel: true
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extern: true
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symbol: 5
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- offset: 0x00000018
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type: ARM64_RELOC_PAGEOFF12
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length: 2
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pc-rel: false
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extern: true
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symbol: 1
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- offset: 0x00000014
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type: ARM64_RELOC_PAGE21
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length: 2
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pc-rel: true
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extern: true
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symbol: 1
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- offset: 0x0000000C
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type: ARM64_RELOC_GOT_LOAD_PAGEOFF12
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length: 2
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pc-rel: false
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extern: true
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symbol: 4
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- offset: 0x00000008
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type: ARM64_RELOC_GOT_LOAD_PAGE21
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length: 2
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pc-rel: true
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extern: true
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symbol: 4
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- segment: __TEXT
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section: __cstring
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type: S_CSTRING_LITERALS
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attributes: [ ]
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address: 0x000000000000002C
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content: [ 0x68, 0x65, 0x6C, 0x6C, 0x6F, 0x0A, 0x00 ]
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local-symbols:
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- name: ltmp0
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type: N_SECT
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sect: 1
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value: 0x0000000000000000
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- name: l_.str
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type: N_SECT
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sect: 2
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value: 0x000000000000002C
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- name: ltmp1
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type: N_SECT
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sect: 2
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value: 0x000000000000002C
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global-symbols:
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- name: _main
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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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undefined-symbols:
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- name: ___stdoutp
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type: N_UNDF
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scope: [ N_EXT ]
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value: 0x0000000000000000
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- name: _fprintf
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type: N_UNDF
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scope: [ N_EXT ]
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value: 0x0000000000000000
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...
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# CHECK: BindOpcodes:
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# CHECK: - Opcode: BIND_OPCODE_SET_DYLIB_ORDINAL_IMM
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# CHECK: Imm: 1
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# CHECK: Symbol: ''
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# CHECK: - Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
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# CHECK: Imm: 0
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# CHECK: Symbol: dyld_stub_binder
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# CHECK: - Opcode: BIND_OPCODE_SET_TYPE_IMM
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# CHECK: Imm: 1
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# CHECK: Symbol: ''
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# CHECK: - Opcode: BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB
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# CHECK: Imm: 2
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# CHECK: ULEBExtraData: [ 0x0 ]
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# CHECK: Symbol: ''
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# CHECK: - Opcode: BIND_OPCODE_DO_BIND
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# CHECK: Imm: 0
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# CHECK: Symbol: ''
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# CHECK: - Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
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# CHECK: Imm: 0
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# CHECK: Symbol: ___stdoutp
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# CHECK: - Opcode: BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB
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# CHECK: Imm: 2
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# CHECK: ULEBExtraData: [ 0x10 ]
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# CHECK: Symbol: ''
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# CHECK: - Opcode: BIND_OPCODE_DO_BIND
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# CHECK: Imm: 0
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# CHECK: Symbol: ''
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# CHECK: - Opcode: BIND_OPCODE_DONE
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# CHECK: Imm: 0
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# CHECK: Symbol: ''
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# CHECK: LazyBindOpcodes:
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# CHECK: - Opcode: BIND_OPCODE_SET_SEGMENT_AND_OFFSET_ULEB
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# CHECK: Imm: 2
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# CHECK: ULEBExtraData: [ 0x18 ]
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# CHECK: Symbol: ''
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# CHECK: - Opcode: BIND_OPCODE_SET_DYLIB_ORDINAL_IMM
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# CHECK: Imm: 1
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# CHECK: Symbol: ''
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# CHECK: - Opcode: BIND_OPCODE_SET_SYMBOL_TRAILING_FLAGS_IMM
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# CHECK: Imm: 0
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# CHECK: Symbol: _fprintf
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# CHECK: - Opcode: BIND_OPCODE_DO_BIND
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# CHECK: Imm: 0
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# CHECK: Symbol: ''
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# CHECK: - Opcode: BIND_OPCODE_DONE
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# CHECK: Imm: 0
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# CHECK: Symbol: ''
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# CHECK: - Opcode: BIND_OPCODE_DONE
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# CHECK: Imm: 0
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# CHECK: Symbol: '' |