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302 lines
9.8 KiB
302 lines
9.8 KiB
4 months ago
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## Check how the "Offset" field is dumped by obj2yaml.
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## For each section we calulate the expected offset.
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## When it does not match the actual offset, we emit the "Offset" key.
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# RUN: yaml2obj %s -o %t1.o
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# RUN: obj2yaml %t1.o | FileCheck %s --check-prefix=BASIC
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# BASIC: --- !ELF
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# BASIC-NEXT: FileHeader:
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# BASIC-NEXT: Class: ELFCLASS64
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# BASIC-NEXT: Data: ELFDATA2LSB
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# BASIC-NEXT: Type: ET_REL
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# BASIC-NEXT: Sections:
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# BASIC-NEXT: - Name: .foo1
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# BASIC-NEXT: Type: SHT_PROGBITS
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# BASIC-NEXT: Content: '00'
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# BASIC-NEXT: - Name: .foo2
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# BASIC-NEXT: Type: SHT_PROGBITS
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# BASIC-NEXT: Content: '00'
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# BASIC-NEXT: - Name: .foo3
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# BASIC-NEXT: Type: SHT_PROGBITS
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# BASIC-NEXT: Content: '00'
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# BASIC-NEXT: - Name: .bar1
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# BASIC-NEXT: Type: SHT_PROGBITS
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# BASIC-NEXT: Offset: 0x100
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# BASIC-NEXT: Content: '00'
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# BASIC-NEXT: - Name: .bar2
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# BASIC-NEXT: Type: SHT_PROGBITS
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# BASIC-NEXT: AddressAlign: 0x10
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# BASIC-NEXT: Content: '00'
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# BASIC-NEXT: - Name: .bar3
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# BASIC-NEXT: Type: SHT_PROGBITS
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# BASIC-NEXT: AddressAlign: 0x10
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# BASIC-NEXT: Offset: 0x200
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# BASIC-NEXT: - Name: .bar4
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# BASIC-NEXT: Type: SHT_PROGBITS
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# BASIC-NEXT: AddressAlign: 0x100000000
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# BASIC-NEXT: Offset: 0x210
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# HEADERS-NEXT: SectionHeaderTable:
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# HEADERS-NEXT: Sections:
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# HEADERS-NEXT: - Name: .bar4
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# HEADERS-NEXT: - Name: .bar3
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# HEADERS-NEXT: - Name: .bar2
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# HEADERS-NEXT: - Name: .bar1
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# HEADERS-NEXT: - Name: .foo3
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# HEADERS-NEXT: - Name: .foo2
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# HEADERS-NEXT: - Name: .foo1
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# HEADERS-NEXT: - Name: .strtab
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# HEADERS-NEXT: - Name: .shstrtab
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# BASIC-NEXT: ...
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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_REL
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Sections:
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## The offset of .foo1 by default is 0x40, because it is placed right
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## after the ELF header. In this case we don't dump the "Offset" key,
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## because the file offset is naturally expected.
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- Name: .foo1
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Type: SHT_PROGBITS
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Size: 1
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Offset: [[FIRSTOFF=<none>]]
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AddressAlign: [[FIRSTADDRALIGN=0]]
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## Offset of .foo2 == offset of .foo1 + size of .foo1.
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## We don't dump the "Offset" key in this case.
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## sh_offset of .foo2 is 0x41.
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- Name: .foo2
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Type: SHT_PROGBITS
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Size: 1
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## Offset of .foo3 == offset of .foo2 + size of .foo2,
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## We don't dump the "Offset" key in this case.
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## sh_offset of .foo3 is 0x42.
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- Name: .foo3
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Type: SHT_PROGBITS
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Size: 1
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## Offset of .bar1 != offset of .foo3 + size of .foo3.
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## We dump the "Offset" key in this case.
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## sh_offset of .bar1 is 0x100.
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- Name: .bar1
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Type: SHT_PROGBITS
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Offset: 0x100
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Size: 1
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## [Offset of .bar1 + size of .bar1] aligned by 0x10 is equal to the offset
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## of .bar2. We don't dump the "Offset" key in this case.
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## sh_offset of .bar2 is 0x110.
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- Name: .bar2
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Type: SHT_PROGBITS
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AddressAlign: 0x10
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Offset: 0x110
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Size: 1
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## [Offset of .bar2 + size of .bar2] aligned by 0x10 is not equal to the offset
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## of .bar3. We dump the "Offset" key in this case.
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## sh_offset of .bar3 is 0x200.
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- Name: .bar3
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Type: SHT_PROGBITS
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AddressAlign: 0x10
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Offset: 0x200
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## A case where AddressAlign > MAX_UINT32 and (uint32_t)AddressAlign == 0.
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## Check we dump an offset in this case properly.
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- Name: .bar4
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Type: SHT_PROGBITS
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AddressAlign: 0x100000000
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Offset: 0x210
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SectionHeaderTable:
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Sections:
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## By default we have the same order of sections as defined by the "Sections" key.
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- Name: [[SEC1=.foo1]]
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- Name: [[SEC2=.foo2]]
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- Name: [[SEC3=.foo3]]
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- Name: [[SEC4=.bar1]]
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- Name: [[SEC5=.bar2]]
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- Name: [[SEC6=.bar3]]
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- Name: [[SEC7=.bar4]]
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- Name: .strtab
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- Name: .shstrtab
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## In this case we change the order of sections in the section header table.
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## Check that we still dump offsets correctly.
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# RUN: yaml2obj %s -DSEC1=.bar4 -DSEC2=.bar3 -DSEC3=.bar2 \
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# RUN: -DSEC4=.bar1 -DSEC5=.foo3 -DSEC6=.foo2 -DSEC7=.foo1 -o %t1-sechdr.o
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# RUN: obj2yaml %t1-sechdr.o | FileCheck --check-prefixes=BASIC,HEADERS %s
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## Show we dump the "Offset" key for the first section when
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## it has an unexpected file offset.
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# RUN: yaml2obj %s -DFIRSTOFF=0x40 -o %t2a.o
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# RUN: obj2yaml %t2a.o | FileCheck %s --check-prefix=BASIC
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# RUN: yaml2obj %s -DFIRSTOFF=0x41 -o %t2b.o
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# RUN: obj2yaml %t2b.o | FileCheck %s --check-prefix=FIRSTSEC
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# FIRSTSEC: Sections:
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# FIRSTSEC-NEXT: - Name: .foo1
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# FIRSTSEC-NEXT: Type: SHT_PROGBITS
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# FIRSTSEC-NEXT: Offset: 0x41
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# FIRSTSEC-NEXT: Content: '00'
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## Test that we take the alignment of the first section into account
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## when calculating the expected offset for it. In this case we don't
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## dump the "Offset", because it is expected.
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# RUN: yaml2obj %s -DFIRSTOFF=0x80 -DFIRSTADDRALIGN=0x80 -o %t3.o
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# RUN: obj2yaml %t3.o | FileCheck %s --check-prefix=FIRSTSECALIGN
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# FIRSTSECALIGN: - Name: .foo1
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# FIRSTSECALIGN-NEXT: Type: SHT_PROGBITS
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# FIRSTSECALIGN-NEXT: AddressAlign: 0x80
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# FIRSTSECALIGN-NEXT: Content: '00'
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# FIRSTSECALIGN-NEXT: - Name:
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## Test that we take the program headers offset and size into account when calculating
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## the expected file offset of the first section.
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# RUN: yaml2obj %s --docnum=2 -o %t4a.o
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# RUN: obj2yaml %t4a.o | FileCheck %s --check-prefix=FIRSTSECPHDRS
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## The expected file offset of the first section is:
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## 0x40 (start of program headers) + 0x38 (size of program headers) * 2(number of program headers) = 0xB0
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# RUN: yaml2obj %s --docnum=2 -DFIRSTOFF=0xB0 -o %t4b.o
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# RUN: obj2yaml %t4b.o | FileCheck %s --check-prefix=FIRSTSECPHDRS
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# RUN: yaml2obj %s --docnum=2 -DFIRSTOFF=0xB1 -o %t4c.o
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# RUN: obj2yaml %t4c.o | FileCheck %s --check-prefixes=FIRSTSECPHDRS,FIRSTSECPHDRSOFFSET
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# FIRSTSECPHDRS: Sections:
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# FIRSTSECPHDRS-NEXT: - Name: .foo
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# FIRSTSECPHDRS-NEXT: Type: SHT_PROGBITS
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# FIRSTSECPHDRSOFFSET-NEXT: Offset: 0xB1
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# FIRSTSECPHDRS-NEXT: ...
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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_REL
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Sections:
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- Name: .foo
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Type: SHT_PROGBITS
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Offset: [[FIRSTOFF=<none>]]
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ProgramHeaders:
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- Type: PT_LOAD
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- Type: PT_LOAD
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## Test that when there are no program headers in the file, we don't take SHT_NOBITS
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## section sizes into account, but respect their alignment when calculating the expected
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## section offsets.
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# RUN: yaml2obj %s --docnum=3 -o %t5.o
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# RUN: obj2yaml %t5.o | FileCheck %s --check-prefix=NOBITS
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# NOBITS: Sections:
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# NOBITS-NEXT: - Name: .progbits1
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# NOBITS-NEXT: Type: SHT_PROGBITS
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# NOBITS-NEXT: Content: '00'
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# NOBITS-NEXT: - Name: .nobits1
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# NOBITS-NEXT: Type: SHT_NOBITS
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# NOBITS-NEXT: Size: 0x10
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# NOBITS-NEXT: - Name: .progbits2
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# NOBITS-NEXT: Type: SHT_PROGBITS
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# NOBITS-NEXT: Content: '0000'
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# NOBITS-NEXT: - Name: .nobits2
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# NOBITS-NEXT: Type: SHT_NOBITS
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# NOBITS-NEXT: AddressAlign: 0x100
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# NOBITS-NEXT: Size: 0x100
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# NOBITS-NEXT: - Name: .progbits3
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# NOBITS-NEXT: Type: SHT_PROGBITS
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# NOBITS-NEXT: Content: '000000'
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# NOBITS-NEXT: ...
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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_REL
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Sections:
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## sh_offset == 0x40.
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- Name: .progbits1
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Type: SHT_PROGBITS
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Size: 0x1
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## sh_offset == 0x41.
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- Name: .nobits1
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Type: SHT_NOBITS
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Size: 0x10
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## sh_offset == 0x41.
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- Name: .progbits2
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Type: SHT_PROGBITS
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Size: 0x2
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## sh_offset == 0x100.
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- Name: .nobits2
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Type: SHT_NOBITS
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Size: 0x100
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AddressAlign: 0x100
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## sh_offset == 0x100.
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- Name: .progbits3
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Type: SHT_PROGBITS
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Size: 0x3
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## Check that we might take sizes of SHT_NOBITS sections into account when calculating
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## the expected offsets when there are program headers in the file. The rule is the following:
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## we assume that the file space is allocated for the SHT_NOBITS section when there are
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## other non-nobits sections in the same segment that follows it.
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# RUN: yaml2obj %s --docnum=4 -o %t6.o
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# RUN: obj2yaml %t6.o | FileCheck %s --check-prefix=NOBITS-PHDRS
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# NOBITS-PHDRS: Sections:
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# NOBITS-PHDRS-NEXT: - Name: .nobits1
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# NOBITS-PHDRS-NEXT: Type: SHT_NOBITS
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# NOBITS-PHDRS-NEXT: Size: 0x1
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# NOBITS-PHDRS-NEXT: - Name: .progbits
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# NOBITS-PHDRS-NEXT: Type: SHT_PROGBITS
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# NOBITS-PHDRS-NEXT: Content: '0000'
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# NOBITS-PHDRS-NEXT: - Name: .nobits3
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# NOBITS-PHDRS-NEXT: Type: SHT_NOBITS
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# NOBITS-PHDRS-NEXT: Size: 0x100
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# NOBITS-PHDRS-NEXT: - Name: .nobits4
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# NOBITS-PHDRS-NEXT: Type: SHT_NOBITS
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# NOBITS-PHDRS-NEXT: Size: 0x200
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# NOBITS-PHDRS-NEXT: - Name: .nobits5
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# NOBITS-PHDRS-NEXT: Type: SHT_NOBITS
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# NOBITS-PHDRS-NEXT: Offset: 0x100
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# NOBITS-PHDRS-NEXT: Size: 0x300
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# NOBITS-PHDRS-NEXT: ...
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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_REL
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Sections:
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## sh_offset == 0xe8.
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- Name: .nobits1
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Type: SHT_NOBITS
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Size: 0x1
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## sh_offset == 0xe9.
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- Name: .progbits
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Type: SHT_PROGBITS
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Size: 0x2
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## sh_offset == 0xeb.
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- Name: .nobits3
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Type: SHT_NOBITS
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Size: 0x100
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## sh_offset == 0xeb.
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- Name: .nobits4
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Type: SHT_NOBITS
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Size: 0x200
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## sh_offset == 0x100.
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- Name: .nobits5
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Type: SHT_NOBITS
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Size: 0x300
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Offset: 0x100
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ProgramHeaders:
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- Type: PT_LOAD
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FirstSec: .nobits1
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LastSec: .progbits
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- Type: PT_LOAD
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FirstSec: .nobits3
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LastSec: .nobits4
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- Type: PT_LOAD
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FirstSec: .nobits5
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LastSec: .nobits5
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