derek.holloway
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49 lines
2.3 KiB
Plaintext
49 lines
2.3 KiB
Plaintext
Test plain passthrough copying with llvm-objcopy, by checking that obj2yaml
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produces identical output for both input and output object files/executables.
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(Intentionally not comparing to the original input yaml, in case there are
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superficial differences like line endings.) In order to have a check of the
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whole file and not just individual fields with FileCheck, checking with
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obj2yaml+cmp instead of llvm-readobj+cmp, as llvm-readobj also prints file
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details that can differ between otherwise equal files (such as file offsets).
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Actual copied object files/executables can differ in, among others, the
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following aspects:
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- The padding of executable sections (lld uses 0xcc, which is int3 on x86)
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- The actual layout of the string table (it can be filled linearly,
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strings can be dedupliated, the table can be optimized by sharing tails
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of longer strings; different parts in llvm do each of these three options)
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- The size indication for an empty/missing string table can either be 4
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or left out altogether
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- Alignment of section data
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- Checksums
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RUN: yaml2obj %p/Inputs/i386-obj.yaml -o %t.i386.o
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RUN: llvm-objcopy %t.i386.o %t.i386-copy.o
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RUN: obj2yaml %t.i386.o > %t.i386.o.yaml
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RUN: obj2yaml %t.i386-copy.o > %t.i386-copy.o.yaml
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RUN: cmp %t.i386.o.yaml %t.i386-copy.o.yaml
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RUN: yaml2obj %p/Inputs/x86_64-obj.yaml -o %t.x86_64.o
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RUN: llvm-objcopy %t.x86_64.o %t.x86_64-copy.o
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RUN: obj2yaml %t.x86_64.o > %t.x86_64.o.yaml
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RUN: obj2yaml %t.x86_64-copy.o > %t.x86_64-copy.o.yaml
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RUN: cmp %t.x86_64.o.yaml %t.x86_64-copy.o.yaml
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RUN: yaml2obj %p/Inputs/i386-exe.yaml -o %t.i386.exe
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RUN: llvm-objcopy %t.i386.exe %t.i386-copy.exe
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RUN: obj2yaml %t.i386.exe > %t.i386.exe.yaml
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RUN: obj2yaml %t.i386-copy.exe > %t.i386-copy.exe.yaml
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RUN: cmp %t.i386.exe.yaml %t.i386-copy.exe.yaml
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RUN: yaml2obj %p/Inputs/x86_64-exe.yaml -o %t.x86_64.exe
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RUN: llvm-objcopy %t.x86_64.exe %t.x86_64-copy.exe
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RUN: obj2yaml %t.x86_64.exe > %t.x86_64.exe.yaml
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RUN: obj2yaml %t.x86_64-copy.exe > %t.x86_64-copy.exe.yaml
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RUN: cmp %t.x86_64.exe.yaml %t.x86_64-copy.exe.yaml
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RUN: yaml2obj %p/Inputs/no-symbols.yaml -o %t.no-symbols.o
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RUN: llvm-objcopy %t.no-symbols.o %t.no-symbols-copy.o
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RUN: obj2yaml %t.no-symbols.o > %t.no-symbols.o.yaml
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RUN: obj2yaml %t.no-symbols-copy.o > %t.no-symbols-copy.o.yaml
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RUN: cmp %t.no-symbols.o.yaml %t.no-symbols-copy.o.yaml
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