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
166 lines
5.0 KiB
YAML
166 lines
5.0 KiB
YAML
# RUN: ld64.lld.darwinold -arch x86_64 %s %p/Inputs/write-final-sections.yaml \
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# RUN: -o %t -e _foo
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# RUN: llvm-readobj --sections --section-data %t | FileCheck %s
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--- !native
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defined-atoms:
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# For __TEXT, __text (with typeCode)
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- name: _foo
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scope: global
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content: [ 55 ]
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# CHECK: Name: __text
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# CHECK: Segment: __TEXT
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 55
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# CHECK-NEXT: )
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# For __TEXT, __const (with typeConstant),
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- type: constant
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content: [ 01, 00, 00, 00 ]
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# From __TEXT, __literal4, (with typeLiteral4)
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- scope: hidden
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type: const-4-byte
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content: [ 02, 00, 00, 00 ]
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# From __TEXT, __literal8, (with typeLiteral8)
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- scope: hidden
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type: const-8-byte
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content: [ 03, 00, 00, 00, 00, 00, 00, 00 ]
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# From __TEXT, __literal16, (with typeLiteral16)
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- scope: hidden
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type: const-16-byte
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content: [ 04, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00 ]
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# CHECK: Name: __const
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# CHECK: Segment: __TEXT
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 01000000 02000000 03000000 00000000
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# CHECK-NEXT: 0010: 04000000 00000000 00000000 00000000
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# CHECK-NEXT: )
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# For __TEXT, __cstring (with typeCString)
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- scope: hidden
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type: c-string
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content: [ 57, 69, 62, 62, 6C, 65, 00 ]
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merge: by-content
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# CHECK: Name: __cstring
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# CHECK: Segment: __TEXT
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 57696262 6C6500
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# CHECK-NEXT: )
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# For __TEXT, __ustring (with typeUTF16String)
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- scope: hidden
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type: utf16-string
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content: [ 05, 00 ]
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merge: by-content
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# CHECK: Name: __ustring
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# CHECK: Segment: __TEXT
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 0500
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# CHECK-NEXT: )
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# For __TEXT, __gcc_except_tab, (with typeLSDA)
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- name: GCC_except_table0
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type: unwind-lsda
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content: [ 06, 00 ]
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# CHECK: Name: __gcc_except_tab
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# CHECK: Segment: __TEXT
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 0600
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# CHECK-NEXT: )
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# For __TEXT, __eh_frame, (with typeCFI)
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- name: LCIE
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type: unwind-cfi
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content: [ 14, 00, 00, 00, 00, 00, 00, 00, 01, 7A, 52, 00,
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01, 78, 10, 01, 10, 0C, 07, 08, 90, 01, 00, 00 ]
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- type: unwind-cfi
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content: [ 24, 00, 00, 00, 1C, 00, 00, 00, C8, FE, FF, FF,
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FF, FF, FF, FF, 01, 00, 00, 00, 00, 00, 00, 00,
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00, 41, 0E, 10, 86, 02, 43, 0D, 06, 00, 00, 00,
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00, 00, 00, 00 ]
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references:
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- kind: unwindFDEToFunction
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offset: 8
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target: _foo
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- kind: negDelta32
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offset: 4
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target: LCIE
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# CHECK: Name: __eh_frame
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# CHECK: Segment: __TEXT
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 14000000 00000000 017A5200 01781001
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# CHECK-NEXT: 0010: 100C0708 90010000 24000000 1C000000
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# CHECK-NEXT: 0020: 70FFFFFF FFFFFFFF 01000000 00000000
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# CHECK-NEXT: 0030: 00410E10 8602430D 06000000 00000000
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# CHECK-NEXT: )
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# For __DATA, __data, (with typeData)
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- name: var
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type: data
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content: [ 08 ]
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# CHECK: Name: __data
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# CHECK: Segment: __DATA
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 08
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# CHECK-NEXT: )
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# For __DATA, __bss (with typeZeroFill)
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# FIXME: Attributes & tags of __bss are mostly broken. Should be at end of
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# __DATA, should have size, should have S_ZEROFILL flag.
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- type: zero-fill
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size: 8
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# CHECK: Name: __bss
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# CHECK: Segment: __DATA
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# For __DATA, __const, (with typeConstData)
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- type: const-data
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content: [ 09, 00, 00, 00 ]
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# CHECK: Name: __const
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# CHECK: Segment: __DATA
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 09000000
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# CHECK-NEXT: )
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# For __DATA, __cfstring, (with typeCFString)
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- type: cfstring
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content: [ 0A, 00 ]
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# CHECK: Name: __cfstring
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# CHECK: Segment: __DATA
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 0A00
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# CHECK-NEXT: )
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# For __DATA, __got (with typeGOT)
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- type: got
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content: [ 0B, 00, 00, 00, 00, 00, 00, 00 ]
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# CHECK: Name: __got
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# CHECK: Segment: __DATA
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 0B000000 00000000
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# CHECK-NEXT: )
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# For __DATA, __mod_init_func (with typeInitializerPtr)
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- type: initializer-pointer
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content: [ 0C, 00, 00, 00, 00, 00, 00, 00 ]
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# CHECK: Name: __mod_init_func
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# CHECK: Segment: __DATA
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 0C000000 00000000
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# CHECK-NEXT: )
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# For __DATA, __mod_term_func (with typeTerminatorPointer)
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- type: terminator-pointer
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content: [ 0D, 00, 00, 00, 00, 00, 00, 00 ]
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# CHECK: Name: __mod_term_func
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# CHECK: Segment: __DATA
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# CHECK: SectionData (
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# CHECK-NEXT: 0000: 0D000000 00000000
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# CHECK-NEXT: )
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- type: compact-unwind
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content: [ 0E, 00, 00, 00, 00, 00, 00, 00 ]
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# CHECK-NOT: Name: __compact_unwind
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