forked from OSchip/llvm-project
[llvm-readobj/elf] - Refine the malformed-pt-dynamic.test.
This is splitted out from D85519, but significantly reworked. Changes: 1) This test was changed to stop using python. 2) Use NoHeaders: true instead of `llvm-objcopy --strip-sections`. 3) Test llvm-readelf too (not just llvm-readobj). 4) Simplify the YAML used a bit (e.g. remove PT_LOAD). 5) Test 2 different cases: objects with section header table and without. Differential revision: https://reviews.llvm.org/D86073
This commit is contained in:
Georgii Rymar
parent
b475eca1ed
commit
6786b3e307
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@ -1,51 +1,75 @@
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# If the offset and/or size fields of the PT_DYNAMIC field become corrupted,
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# we should report a sensible message.
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## If the offset and/or size fields of the PT_DYNAMIC field become corrupted,
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## we should report a sensible message.
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# Creating such a malformed file is hard. The easiest way to simulate it is to
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# truncate the file. Note that the section headers must first be stripped or
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# llvm-readobj will fail to parse the file due to the section header table
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# offset pointing outside the file.
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## Case A: Test case where the size of the PT_DYNAMIC header is too large to fit in the file,
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## but the start is within the file.
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# RUN: yaml2obj %s -o %t.base
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# RUN: llvm-objcopy --strip-sections %t.base %t.stripped
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## Case A.1: the section header table is present in the object. Check that we report a warning about the
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## broken PT_DYNAMIC header, check we dump the dynamic table.
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# RUN: yaml2obj %s -DFILESIZE=0x131 -o %t1
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# RUN: llvm-readobj %t1 --dynamic-table 2>&1 | FileCheck -DFILE=%t1 %s --check-prefixes=WARN1,WARN1-LLVM
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# RUN: llvm-readelf %t1 --dynamic-table 2>&1 | FileCheck -DFILE=%t1 %s --check-prefixes=WARN1,WARN1-GNU
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# Test case where the size is too large to fit in the file, but the start is
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# within the file.
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# RUN: cp %t.stripped %t.truncated1
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# RUN: %python -c "with open(r'%t.truncated1', 'r+') as f: f.truncate(0x1001)"
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# RUN: llvm-readobj %t.truncated1 --dynamic-table 2>&1 | \
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# RUN: FileCheck -DFILE=%t.truncated1 %s --check-prefix=WARN1
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# WARN1: warning: '[[FILE]]': PT_DYNAMIC segment offset (0x1000) + file size (0x131) exceeds the size of the file (0x1130)
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# WARN1: warning: '[[FILE]]': PT_DYNAMIC segment offset (0x1000) + file size (0x10) exceeds the size of the file (0x1001)
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# WARN1-LLVM: DynamicSection [ (1 entries)
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# WARN1-LLVM-NEXT: Tag Type Name/Value
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# WARN1-LLVM-NEXT: 0x0000000000000000 NULL 0x0
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# WARN1-LLVM-NEXT: ]
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# Test case where the offset is too large to be in the file.
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# RUN: cp %t.stripped %t.truncated2
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# RUN: %python -c "with open(r'%t.truncated2', 'r+') as f: f.truncate(0xFFF)"
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# RUN: llvm-readobj %t.truncated2 --dynamic-table 2>&1 | \
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# RUN: FileCheck -DFILE=%t.truncated2 %s --check-prefix=WARN2
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# WARN1-GNU: Dynamic section at offset 0x1000 contains 1 entries:
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# WARN1-GNU-NEXT: Tag Type Name/Value
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# WARN1-GNU-NEXT: 0x0000000000000000 (NULL) 0x0
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# WARN2: warning: '[[FILE]]': PT_DYNAMIC segment offset (0x1000) + file size (0x10) exceeds the size of the file (0xfff)
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## Case A.2: in this case we drop section headers. The dynamic table is not dumped.
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# RUN: yaml2obj %s -DFILESIZE=0x119 -DNOHEADERS=true -o %t1.noheaders
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# RUN: llvm-readobj %t1.noheaders --dynamic-table 2>&1 | FileCheck -DFILE=%t1.noheaders %s \
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# RUN: --check-prefix=WARN1-NOHEADERS --implicit-check-not="DynamicSection ["
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# RUN: llvm-readelf %t1.noheaders --dynamic-table 2>&1 | FileCheck -DFILE=%t1.noheaders %s \
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# RUN: --check-prefix=WARN1-NOHEADERS --implicit-check-not="Dynamic section"
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# WARN1-NOHEADERS: warning: '[[FILE]]': PT_DYNAMIC segment offset (0x1000) + file size (0x119) exceeds the size of the file (0x1118)
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## Case B: Test case where the offset of the PT_DYNAMIC header is too large to be in the file.
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## Case B.1: the section header table is present in the object. Check that we report a warning about the
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## broken PT_DYNAMIC header, but document that we do not dump the dynamic table, because
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## return an error earlier.
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# RUN: yaml2obj %s -DOFFSET=0x1131 -o %t2
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# RUN: not llvm-readobj %t2 --dynamic-table 2>&1 | FileCheck -DFILE=%t2 %s --check-prefix=WARN2
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# RUN: not llvm-readelf %t2 --dynamic-table 2>&1 | FileCheck -DFILE=%t2 %s --check-prefix=WARN2
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# WARN2: warning: '[[FILE]]': PT_DYNAMIC segment offset (0x1131) + file size (0x10) exceeds the size of the file (0x1130)
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# WARN2: error: '[[FILE]]': Invalid data was encountered while parsing the file
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## Case B.2: in this case we drop section headers. The dynamic table is not dumped.
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# RUN: yaml2obj %s -DOFFSET=0x1119 -DNOHEADERS=true -o %t2.noheaders
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# RUN: llvm-readobj %t2.noheaders --dynamic-table 2>&1 | FileCheck -DFILE=%t2.noheaders %s \
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# RUN: --check-prefix=WARN2-NOHEADERS --implicit-check-not="DynamicSection ["
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# RUN: llvm-readelf %t2.noheaders --dynamic-table 2>&1 | FileCheck -DFILE=%t2.noheaders %s \
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# RUN: --check-prefix=WARN2-NOHEADERS --implicit-check-not="Dynamic section"
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# WARN2-NOHEADERS: warning: '[[FILE]]': PT_DYNAMIC segment offset (0x1119) + file size (0x10) exceeds the size of the file (0x1118)
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--- !ELF
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FileHeader:
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Class: ELFCLASS64
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Data: ELFDATA2LSB
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Type: ET_EXEC
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Machine: EM_X86_64
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Machine: EM_NONE
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Sections:
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Address: 0x1000
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AddressAlign: 0x1000
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- Name: .dynamic
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Type: SHT_DYNAMIC
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Address: 0x1000
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Offset: 0x1000
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ShOffset: [[OFFSET=<none>]]
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Entries:
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- Tag: DT_NULL
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Value: 0
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ProgramHeaders:
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- Type: PT_LOAD
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VAddr: 0x1000
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Sections:
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- Section: .dynamic
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- Type: PT_DYNAMIC
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VAddr: 0x1000
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- Type: PT_DYNAMIC
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FileSize: [[FILESIZE=<none>]]
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Sections:
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- Section: .dynamic
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SectionHeaderTable:
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NoHeaders: [[NOHEADERS=false]]
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