9b5148d426
This is what ld64 does. Deviating in behavior here can result in some subtle duplicate symbol errors, as detailed in the objc.s test. Differential Revision: https://reviews.llvm.org/D108781
109 lines
3.9 KiB
ArmAsm
109 lines
3.9 KiB
ArmAsm
# REQUIRES: x86, arm
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# RUN: rm -rf %t; split-file %s %t
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/has-objc-symbol.s -o %t/has-objc-symbol.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/has-objc-category.s -o %t/has-objc-category.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/has-objc-symbol-and-category.s -o %t/has-objc-symbol-and-category.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/has-swift.s -o %t/has-swift.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/no-objc.s -o %t/no-objc.o
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## Make sure we don't mis-parse a 32-bit file as 64-bit
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# RUN: llvm-mc -filetype=obj -triple=armv7-apple-watchos %t/no-objc.s -o %t/wrong-arch.o
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# RUN: llvm-ar rcs %t/libHasSomeObjC.a %t/no-objc.o %t/has-objc-symbol.o %t/has-objc-category.o %t/has-swift.o %t/wrong-arch.o
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# RUN: llvm-ar rcs %t/libHasSomeObjC2.a %t/no-objc.o %t/has-objc-symbol-and-category.o %t/has-swift.o %t/wrong-arch.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/test.s -o %t/test.o
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# RUN: %lld -lSystem %t/test.o -o %t/test -L%t -lHasSomeObjC -ObjC
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# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s --check-prefix=OBJC
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# RUN: %lld -lSystem %t/test.o -o %t/test -L%t -lHasSomeObjC2 -ObjC
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# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s --check-prefix=OBJC
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# OBJC: Sections:
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# OBJC-NEXT: Idx Name Size VMA Type
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# OBJC-NEXT: 0 __text {{.*}} TEXT
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# OBJC-NEXT: 1 __swift {{.*}} DATA
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# OBJC-NEXT: 2 __objc_catlist {{.*}} DATA
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# OBJC-NEXT: 3 has_objc_symbol {{.*}} DATA
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# OBJC-EMPTY:
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# OBJC-NEXT: SYMBOL TABLE:
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# OBJC-NEXT: g F __TEXT,__text _main
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# OBJC-NEXT: g F __TEXT,__text _OBJC_CLASS_$_MyObject
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# RUN: %lld -lSystem %t/test.o -o %t/test -L%t -lHasSomeObjC
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# RUN: llvm-objdump --section-headers --syms %t/test | FileCheck %s --check-prefix=NO-OBJC
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# NO-OBJC: Sections:
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# NO-OBJC-NEXT: Idx Name Size VMA Type
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# NO-OBJC-NEXT: 0 __text {{.*}} TEXT
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# NO-OBJC-EMPTY:
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# NO-OBJC-NEXT: SYMBOL TABLE:
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# NO-OBJC-NEXT: g F __TEXT,__text _main
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# NO-OBJC-NEXT: g F __TEXT,__text __mh_execute_header
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# NO-OBJC-NEXT: *UND* dyld_stub_binder
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# NO-OBJC-EMPTY:
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/refs-dup.s -o %t/refs-dup.o
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# RUN: llvm-mc -filetype=obj -triple=x86_64-apple-darwin %t/refs-objc.s -o %t/refs-objc.o
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## Check that -ObjC causes has-objc-symbol.o to be loaded first, prior to symbol
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## resolution. This matches ld64's behavior.
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# RUN: %lld -dylib %t/refs-dup.o %t/refs-objc.o -o %t/refs-dup -L%t -lHasSomeObjC -ObjC
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# RUN: llvm-objdump --macho --syms %t/refs-dup | FileCheck %s --check-prefix=DUP-FROM-OBJC
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# DUP-FROM-OBJC: g O __DATA,has_objc_symbol _has_dup
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## Without -ObjC, no-objc.o gets loaded first during symbol resolution, causing
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## a duplicate symbol error.
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# RUN: not %lld -dylib %t/refs-dup.o %t/refs-objc.o -o %t/refs-dup -L%t \
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# RUN: -lHasSomeObjC 2>&1 | FileCheck %s --check-prefix=DUP-ERROR
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# DUP-ERROR: error: duplicate symbol: _has_dup
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#--- has-objc-symbol.s
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.globl _OBJC_CLASS_$_MyObject, _has_dup
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_OBJC_CLASS_$_MyObject:
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.section __DATA,has_objc_symbol
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_has_dup:
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#--- has-objc-category.s
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.section __DATA,__objc_catlist
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.quad 0x1234
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#--- has-objc-symbol-and-category.s
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## Make sure we load this archive member exactly once (i.e. no duplicate symbol
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## error).
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.globl _OBJC_CLASS_$_MyObject, _has_dup
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_OBJC_CLASS_$_MyObject:
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.section __DATA,has_objc_symbol
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_has_dup:
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.section __DATA,__objc_catlist
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.quad 0x1234
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#--- has-swift.s
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.section __TEXT,__swift
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.quad 0x1234
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#--- no-objc.s
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## This archive member should not be pulled in by -ObjC since it does not
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## contain any ObjC-related data.
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.globl _has_dup
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.section __DATA,foo
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.section __DATA,bar
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.section __DATA,no_objc
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_has_dup:
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#--- test.s
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.globl _main
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_main:
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ret
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#--- refs-dup.s
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.data
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.quad _has_dup
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#--- refs-objc.s
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.data
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.quad _OBJC_CLASS_$_MyObject
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