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[ELF][test] Add some tests for versioned symbols in object files
Test the symbol resolution related to * defined foo@@v1 and foo@v1 in object files/shared objects * undefined foo@v1 * weak foo@@v1 and foo@v1 * visibility * interaction with --wrap. Reviewed By: grimar Differential Revision: https://reviews.llvm.org/D92258
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| # REQUIRES: x86 | ||
| ## Test symbol resolution related to .symver produced symbols in object files. | ||
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| # RUN: split-file %s %t | ||
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/ref.s -o %t/ref.o | ||
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/ref1.s -o %t/ref1.o | ||
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/ref1p.s -o %t/ref1p.o | ||
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/def1.s -o %t/def1.o | ||
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/def1w.s -o %t/def1w.o | ||
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/hid1.s -o %t/hid1.o | ||
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/hid1w.s -o %t/hid1w.o | ||
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/def2.s -o %t/def2.o | ||
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/wrap.s -o %t/wrap.o | ||
| # RUN: llvm-mc -filetype=obj -triple=x86_64 %t/wrap1.s -o %t/wrap1.o | ||
| # RUN: ld.lld -shared --soname=def1.so --version-script=%t/ver %t/def1.o -o %t/def1.so | ||
| # RUN: ld.lld -shared --soname=hid1.so --version-script=%t/ver %t/hid1.o -o %t/hid1.so | ||
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| ## TODO Report a duplicate definition error for foo@v1 and foo@@v1. | ||
| # RUN: ld.lld -shared --version-script=%t/ver %t/def1.o %t/hid1.o -o /dev/null | ||
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| # RUN: ld.lld -shared --version-script=%t/ver %t/def1w.o %t/hid1.o -o /dev/null | ||
| # RUN: ld.lld -shared --version-script=%t/ver %t/def1.o %t/hid1w.o -o /dev/null | ||
| # RUN: ld.lld -shared --version-script=%t/ver %t/def1w.o %t/hid1w.o -o /dev/null | ||
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| ## TODO foo@@v1 should resolve undefined foo@v1. | ||
| # RUN: not ld.lld -shared --version-script=%t/ver %t/ref1p.o %t/def1.o -o /dev/null | ||
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| ## TODO | ||
| ## foo@@v1 resolves both undefined foo and foo@v1. There is one single definition. | ||
| ## Note: set soname so that the name string referenced by .gnu.version_d is fixed. | ||
| # RUN: ld.lld -shared --soname=t --version-script=%t/ver %t/ref.o %t/ref1.o %t/def1.o -o %t1 | ||
| # RUN: llvm-readelf -r --dyn-syms %t1 | FileCheck %s | ||
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| # CHECK: Relocation section '.rela.plt' at offset {{.*}} contains 2 entries: | ||
| # CHECK-NEXT: {{.*}} Type {{.*}} | ||
| # CHECK-NEXT: {{.*}} R_X86_64_JUMP_SLOT {{.*}} foo@@v1 + 0 | ||
| # CHECK-NEXT: {{.*}} R_X86_64_JUMP_SLOT {{.*}} foo + 0 | ||
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| # CHECK: 1: {{.*}} NOTYPE GLOBAL DEFAULT UND foo{{$}} | ||
| # CHECK-NEXT: 2: {{.*}} NOTYPE GLOBAL DEFAULT [[#]] foo@@v1 | ||
| # CHECK-EMPTY: | ||
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| ## foo@@v2 does not resolve undefined foo@v1. | ||
| ## TODO Undefined 'foo@v1' should be errored. | ||
| # RUN: ld.lld -shared --soname=t --version-script=%t/ver %t/ref.o %t/ref1.o %t/def2.o -o %t2 | ||
| # RUN: llvm-readelf --dyn-syms %t2 | FileCheck %s --check-prefix=CHECK2 | ||
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| # CHECK2: 1: {{.*}} NOTYPE GLOBAL DEFAULT UND foo{{$}} | ||
| # CHECK2-NEXT: 2: {{.*}} NOTYPE GLOBAL DEFAULT [[#]] foo@@v2 | ||
| # CHECK2-EMPTY: | ||
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| ## foo@@v2 resolves undefined foo while foo@v1 resolves undefined foo@v1. | ||
| # RUN: ld.lld -shared --soname=t --version-script=%t/ver %t/ref.o %t/ref1.o %t/hid1.o %t/def2.o -o %t3 | ||
| # RUN: llvm-readelf -r --dyn-syms %t3 | FileCheck %s --check-prefix=CHECK3 | ||
| # RUN: llvm-objdump -d --no-show-raw-insn %t3 | FileCheck %s --check-prefix=DIS3 | ||
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| # CHECK3: 00000000000034a8 {{.*}} R_X86_64_JUMP_SLOT {{.*}} foo@@v2 + 0 | ||
| # CHECK3-NEXT: 00000000000034b0 {{.*}} R_X86_64_JUMP_SLOT {{.*}} foo@v1 + 0 | ||
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| # CHECK3: 1: {{.*}} NOTYPE GLOBAL DEFAULT [[#]] foo@@v2 | ||
| # CHECK3-NEXT: 2: {{.*}} NOTYPE GLOBAL DEFAULT [[#]] foo@v1 | ||
| # CHECK3-NEXT: 3: {{.*}} NOTYPE GLOBAL DEFAULT [[#]] foo_v1 | ||
| # CHECK3-EMPTY: | ||
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| # DIS3-LABEL: <.text>: | ||
| # DIS3-NEXT: callq 0x1380 <foo@plt> | ||
| # DIS3-COUNT-3: int3 | ||
| # DIS3-NEXT: callq 0x1390 <foo@plt> | ||
| # DIS3-LABEL: <foo@plt>: | ||
| # DIS3-NEXT: jmpq *{{.*}}(%rip) # 34a8 | ||
| # DIS3-LABEL: <foo@plt>: | ||
| # DIS3-NEXT: jmpq *{{.*}}(%rip) # 34b0 | ||
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| ## Then, test the interaction with versioned definitions in shared objects. | ||
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| ## TODO Both foo and foo@v1 are undefined. Ideally we should not create two .dynsym entries. | ||
| # RUN: ld.lld -shared --soname=t --version-script=%t/ver %t/ref.o %t/ref1.o %t/def1.so -o %t4 | ||
| # RUN: llvm-readelf --dyn-syms %t4 | FileCheck %s --check-prefix=CHECK4 | ||
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| # CHECK4: 1: {{.*}} NOTYPE GLOBAL DEFAULT UND foo@v1 | ||
| # CHECK4-NEXT: 2: {{.*}} NOTYPE GLOBAL DEFAULT UND foo@v1 | ||
| # CHECK4-EMPTY: | ||
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| ## hid1.so resolves undefined foo@v1. foo is undefined. | ||
| # RUN: ld.lld -shared --soname=t --version-script=%t/ver %t/ref.o %t/ref1.o %t/hid1.so -o %t5 | ||
| # RUN: llvm-readelf --dyn-syms %t5 | FileCheck %s --check-prefix=CHECK5 | ||
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| # CHECK5: 1: {{.*}} NOTYPE GLOBAL DEFAULT UND foo{{$}} | ||
| # CHECK5-NEXT: 2: {{.*}} NOTYPE GLOBAL DEFAULT UND foo@v1 | ||
| # CHECK5-EMPTY: | ||
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| ## Test the interaction with --wrap. | ||
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| ## The reference from ref.o is redirected. The reference from ref1.o is not. | ||
| # RUN: ld.lld -shared --soname=t --version-script=%t/ver --wrap=foo %t/ref.o %t/ref1.o %t/def1.o %t/wrap.o -o %t.w1 | ||
| # RUN: llvm-readobj -r %t.w1 | FileCheck %s --check-prefix=W1REL | ||
| # RUN: llvm-objdump -d --no-show-raw-insn %t.w1 | FileCheck %s --check-prefix=W1DIS | ||
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| ## TODO foo should be foo@@v1. | ||
| # W1REL: .rela.plt { | ||
| # W1REL-NEXT: R_X86_64_JUMP_SLOT __wrap_foo 0x0 | ||
| # W1REL-NEXT: R_X86_64_JUMP_SLOT foo 0x0 | ||
| # W1REL-NEXT: } | ||
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| # W1DIS-LABEL: <.text>: | ||
| # W1DIS-NEXT: callq {{.*}} <__wrap_foo@plt> | ||
| # W1DIS-COUNT-3: int3 | ||
| # W1DIS-NEXT: callq {{.*}} <foo@plt> | ||
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| ## The reference from ref.o is redirected. The reference from ref1.o is not. | ||
| ## Note: this case demonstrates the typical behavior wrapping a glibc libc.so definition. | ||
| # RUN: ld.lld -shared --soname=t --version-script=%t/ver --wrap=foo %t/ref.o %t/ref1.o %t/def1.so %t/wrap.o -o %t.w2 | ||
| # RUN: llvm-readobj -r %t.w2 | FileCheck %s --check-prefix=W2REL | ||
| # RUN: llvm-objdump -d --no-show-raw-insn %t.w2 | FileCheck %s --check-prefix=W2DIS | ||
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| # W2REL: .rela.plt { | ||
| # W2REL-NEXT: R_X86_64_JUMP_SLOT __wrap_foo 0x0 | ||
| # W2REL-NEXT: R_X86_64_JUMP_SLOT foo@v1 0x0 | ||
| # W2REL-NEXT: } | ||
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| # W2DIS-LABEL: <.text>: | ||
| # W2DIS-NEXT: callq {{.*}} <__wrap_foo@plt> | ||
| # W2DIS-COUNT-3: int3 | ||
| # W2DIS-NEXT: callq {{.*}} <foo@plt> | ||
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| ## Test --wrap on @ and @@. | ||
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| ## TODO Error because __wrap_foo@v1 is not defined. | ||
| ## Note: GNU ld errors "no symbol version section for versioned symbol `__wrap_foo@v1'". | ||
| # RUN: ld.lld -shared --soname=t --version-script=%t/ver --wrap=foo@v1 %t/ref.o %t/ref1.o %t/def1.o %t/wrap.o -o %t.w3 | ||
| # RUN: llvm-readobj -r %t.w3 | FileCheck %s --check-prefix=W3REL | ||
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| # W3REL: .rela.plt { | ||
| # W3REL-NEXT: R_X86_64_JUMP_SLOT foo@@v1 0x0 | ||
| # W3REL-NEXT: R_X86_64_JUMP_SLOT - 0x0 | ||
| # W3REL-NEXT: } | ||
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| ## foo@v1 is correctly wrapped. | ||
| # RUN: ld.lld -shared --soname=t --version-script=%t/ver --wrap=foo@v1 %t/ref.o %t/ref1.o %t/def1.o %t/wrap1.o -o %t.w4 | ||
| # RUN: llvm-readobj -r %t.w4 | FileCheck %s --check-prefix=W4REL | ||
| # RUN: llvm-objdump -d --no-show-raw-insn %t.w4 | FileCheck %s --check-prefix=W4DIS | ||
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| # W4REL: .rela.plt { | ||
| # W4REL-NEXT: R_X86_64_JUMP_SLOT foo@@v1 0x0 | ||
| # W4REL-NEXT: R_X86_64_JUMP_SLOT __wrap_foo@v1 0x0 | ||
| # W4REL-NEXT: } | ||
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| # W4DIS-LABEL: <.text>: | ||
| # W4DIS-NEXT: callq {{.*}} <foo@plt> | ||
| # W4DIS-COUNT-3: int3 | ||
| # W4DIS-NEXT: callq {{.*}} <__wrap_foo@plt> | ||
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| ## TODO The two callq should jump to the same address. | ||
| ## Note: GNU ld errors "no symbol version section for versioned symbol `__wrap_foo@@v1'". | ||
| # RUN: ld.lld -shared --soname=t --version-script=%t/ver --wrap=foo@@v1 %t/ref.o %t/ref1.o %t/def1.o %t/wrap.o -o %t.w5 | ||
| # RUN: llvm-readobj -r %t.w5 | FileCheck %s --check-prefix=W5REL | ||
| # RUN: llvm-objdump -d --no-show-raw-insn %t.w5 | FileCheck %s --check-prefix=W5DIS | ||
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| # W5REL: .rela.plt { | ||
| # W5REL-NEXT: R_X86_64_JUMP_SLOT foo@@v1 0x0 | ||
| # W5REL-NEXT: R_X86_64_JUMP_SLOT foo 0x0 | ||
| # W5REL-NEXT: } | ||
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| # W5DIS-LABEL: <.text>: | ||
| # W5DIS-NEXT: callq 0x1380 <foo@plt> | ||
| # W5DIS-COUNT-3: int3 | ||
| # W5DIS-NEXT: callq 0x1390 <foo@plt> | ||
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| #--- ver | ||
| v1 {}; | ||
| v2 {}; | ||
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| #--- ref.s | ||
| call foo | ||
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| #--- ref1.s | ||
| .symver foo, foo@@@v1 | ||
| call foo | ||
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| #--- ref1p.s | ||
| .protected foo | ||
| .symver foo, foo@@@v1 | ||
| call foo | ||
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| #--- def1.s | ||
| .globl foo | ||
| .symver foo, foo@@@v1 | ||
| foo: | ||
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| #--- def1w.s | ||
| .weak foo | ||
| .symver foo, foo@@@v1 | ||
| foo: | ||
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| #--- hid1.s | ||
| .globl foo_v1 | ||
| .symver foo_v1, foo@v1 | ||
| foo_v1: | ||
| ret | ||
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| #--- hid1w.s | ||
| .weak foo_v1 | ||
| .symver foo_v1, foo@v1 | ||
| foo_v1: | ||
| ret | ||
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| #--- def2.s | ||
| .globl foo | ||
| .symver foo, foo@@@v2 | ||
| foo: | ||
| ret | ||
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| #--- wrap.s | ||
| .globl __wrap_foo | ||
| __wrap_foo: | ||
| hlt | ||
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| #--- wrap1.s | ||
| .globl __wrap_foo_v1 | ||
| .symver __wrap_foo_v1, __wrap_foo@v1 | ||
| __wrap_foo_v1: | ||
| int3 |