derek.holloway
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62 lines
2.5 KiB
Plaintext
62 lines
2.5 KiB
Plaintext
# Test the different ways of hooking the fini function for instrumentation (via
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# DT_FINI and via DT_FINI_ARRAY). We test the latter for both PIE and non-PIE
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# binaries because of the different ways of handling relocations (static or
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# dynamic).
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# All tests perform the following steps:
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# - Compile and link for the case to be tested
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# - Some sanity-checks on the dynamic section and relocations in the binary to
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# verify it has the shape we want for testing:
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# - DT_FINI or DT_FINI_ARRAY in dynamic section
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# - No relative relocations for non-PIE
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# - Instrument
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# - Run instrumented binary
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# - Verify generated profile
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REQUIRES: system-linux,bolt-runtime
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RUN: %clang %cflags -pie %p/Inputs/basic-instrumentation.s -Wl,-q -o %t.exe
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RUN: llvm-readelf -d %t.exe | FileCheck --check-prefix=DYN-FINI %s
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RUN: llvm-readelf -r %t.exe | FileCheck --check-prefix=RELOC-PIE %s
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RUN: llvm-bolt %t.exe -o %t --instrument \
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RUN: --instrumentation-file=%t \
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RUN: --instrumentation-file-append-pid
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RUN: rm -f %t.*.fdata
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RUN: %t
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RUN: cat %t.*.fdata | FileCheck %s
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RUN: %clang %cflags -pie %p/Inputs/basic-instrumentation.s -Wl,-q,-fini=0 -o %t-no-fini.exe
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RUN: llvm-readelf -d %t-no-fini.exe | FileCheck --check-prefix=DYN-NO-FINI %s
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RUN: llvm-readelf -r %t-no-fini.exe | FileCheck --check-prefix=RELOC-PIE %s
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RUN: llvm-bolt %t-no-fini.exe -o %t-no-fini --instrument \
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RUN: --instrumentation-file=%t-no-fini \
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RUN: --instrumentation-file-append-pid
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RUN: rm -f %t-no-fini.*.fdata
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RUN: %t-no-fini
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RUN: cat %t-no-fini.*.fdata | FileCheck %s
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RUN: %clang %cflags -no-pie %p/Inputs/basic-instrumentation.s -Wl,-q,-fini=0 -o %t-no-pie-no-fini.exe
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RUN: llvm-readelf -d %t-no-pie-no-fini.exe | FileCheck --check-prefix=DYN-NO-FINI %s
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RUN: llvm-readelf -r %t-no-pie-no-fini.exe | FileCheck --check-prefix=RELOC-NO-PIE %s
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RUN: llvm-bolt %t-no-pie-no-fini.exe -o %t-no-pie-no-fini --instrument \
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RUN: --instrumentation-file=%t-no-pie-no-fini \
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RUN: --instrumentation-file-append-pid
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RUN: rm -f %t-no-pie-no-fini.*.fdata
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RUN: %t-no-pie-no-fini
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RUN: cat %t-no-pie-no-fini.*.fdata | FileCheck %s
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# With fini: dynamic section should contain DT_FINI
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DYN-FINI: (FINI)
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# Without fini: dynamic section should only contain DT_FINI_ARRAY
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DYN-NO-FINI-NOT: (FINI)
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DYN-NO-FINI: (FINI_ARRAY)
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DYN-NO-FINI: (FINI_ARRAYSZ)
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# With PIE: binary should have relative relocations
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RELOC-PIE: R_AARCH64_RELATIVE
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# Without PIE: binary should not have relative relocations
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RELOC-NO-PIE-NOT: R_AARCH64_RELATIVE
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# The instrumented profile should at least say main was called once
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CHECK: main 0 0 1{{$}}
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