a7a447be0f
Imagine we have a YAML declaration of few sections: `foo1`, `<unnamed 2>`, `foo3`, `foo4`. To put them into segment we can do (1*): ``` Sections: - Section: foo1 - Section: foo4 ``` or we can use (2*): ``` Sections: - Section: foo1 - Section: foo3 - Section: foo4 ``` or (3*) : ``` Sections: - Section: foo1 ## "(index 2)" here is a name that we automatically created for a unnamed section. - Section: (index 2) - Section: foo3 - Section: foo4 ``` It looks really confusing that we don't have to list all of sections. At first I've tried to make this rule stricter and report an error when there is a gap (i.e. when a section is included into segment, but not listed explicitly). This did not work perfect, because such approach conflicts with unnamed sections/fills (see (3*)). This patch drops "Sections" key and introduces 2 keys instead: `FirstSec` and `LastSec`. Both are optional. Differential revision: https://reviews.llvm.org/D90458
206 lines
7.5 KiB
Plaintext
206 lines
7.5 KiB
Plaintext
## Test tools are able to dump different types of notes.
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# RUN: yaml2obj --docnum=1 %s -o %t1.so
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# RUN: llvm-readelf --notes %t1.so | FileCheck %s --check-prefix=GNU --strict-whitespace --match-full-lines
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# RUN: llvm-readobj --notes %t1.so | FileCheck %s --check-prefix=LLVM
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# RUN: llvm-objcopy --strip-sections %t1.so %t1.stripped.so
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# RUN: llvm-readelf --notes %t1.stripped.so | FileCheck %s --check-prefix=GNU-STRIPPED --strict-whitespace --match-full-lines
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# RUN: llvm-readobj --notes %t1.stripped.so | FileCheck %s --check-prefix=LLVM-STRIPPED
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# GNU:Displaying notes found in: .note.ABI-tag
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# GNU-NEXT: Owner Data size Description
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# GNU-NEXT: GNU 0x00000010 NT_GNU_ABI_TAG (ABI version tag)
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# GNU-NEXT: OS: Linux, ABI: 2.6.32
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# GNU:Displaying notes found in: .note.gnu.build-id
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# GNU-NEXT: Owner Data size Description
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# GNU-NEXT: GNU 0x00000010 NT_GNU_BUILD_ID (unique build ID bitstring)
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# GNU-NEXT: Build ID: 4fcb712aa6387724a9f465a32cd8c14b
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# GNU:Displaying notes found in: .note.gnu.gold-version
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# GNU-NEXT: Owner Data size Description
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# GNU-NEXT: GNU 0x00000009 NT_GNU_GOLD_VERSION (gold version)
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# GNU-NEXT: Version: gold 1.11
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# LLVM: Notes [
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# LLVM-NEXT: NoteSection {
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# LLVM-NEXT: Name: .note.ABI-tag
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# LLVM-NEXT: Offset: 0x78
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# LLVM-NEXT: Size: 0x20
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# LLVM-NEXT: Note {
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# LLVM-NEXT: Owner: GNU
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# LLVM-NEXT: Data size: 0x10
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# LLVM-NEXT: Type: NT_GNU_ABI_TAG (ABI version tag)
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# LLVM-NEXT: OS: Linux
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# LLVM-NEXT: ABI: 2.6.32
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# LLVM-NEXT: }
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# LLVM-NEXT: }
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# LLVM-NEXT: NoteSection {
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# LLVM-NEXT: Name: .note.gnu.build-id
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# LLVM-NEXT: Offset: 0x98
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# LLVM-NEXT: Size: 0x20
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# LLVM-NEXT: Note {
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# LLVM-NEXT: Owner: GNU
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# LLVM-NEXT: Data size: 0x10
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# LLVM-NEXT: Type: NT_GNU_BUILD_ID (unique build ID bitstring)
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# LLVM-NEXT: Build ID: 4fcb712aa6387724a9f465a32cd8c14b
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# LLVM-NEXT: }
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# LLVM-NEXT: }
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# LLVM-NEXT: NoteSection {
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# LLVM-NEXT: Name: .note.gnu.gold-version
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# LLVM-NEXT: Offset: 0xB8
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# LLVM-NEXT: Size: 0x1C
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# LLVM-NEXT: Note {
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# LLVM-NEXT: Owner: GNU
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# LLVM-NEXT: Data size: 0x9
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# LLVM-NEXT: Type: NT_GNU_GOLD_VERSION (gold version)
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# LLVM-NEXT: Version: gold 1.11
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# LLVM-NEXT: }
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# LLVM-NEXT: }
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# LLVM-NEXT: ]
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## Note: the section name is <?> here because the section header table is not present.
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# LLVM-STRIPPED: Notes [
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# LLVM-STRIPPED-NEXT: NoteSection {
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# LLVM-STRIPPED-NEXT: Name: <?>
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# LLVM-STRIPPED-NEXT: Offset: 0x78
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# LLVM-STRIPPED-NEXT: Size: 0x20
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# LLVM-STRIPPED-NEXT: Note {
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# LLVM-STRIPPED-NEXT: Owner: GNU
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# LLVM-STRIPPED-NEXT: Data size: 0x10
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# LLVM-STRIPPED-NEXT: Type: NT_GNU_BUILD_ID (unique build ID bitstring)
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# LLVM-STRIPPED-NEXT: Build ID: 4fcb712aa6387724a9f465a32cd8c14b
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# LLVM-STRIPPED-NEXT: }
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# LLVM-STRIPPED-NEXT: }
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# LLVM-STRIPPED-NEXT: ]
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## Note: offset and length printed instead of "found in: .note.gnu.build-id"
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## because the section header table is not present.
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# GNU-STRIPPED:Displaying notes found at file offset 0x00000078 with length 0x00000020:
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# GNU-STRIPPED-NEXT: Owner Data size Description
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# GNU-STRIPPED-NEXT: GNU 0x00000010 NT_GNU_BUILD_ID (unique build ID bitstring)
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# GNU-STRIPPED-NEXT: Build ID: 4fcb712aa6387724a9f465a32cd8c14b
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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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EPhEntSize: [[PHENTSIZE=<none>]]
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EShNum: [[SHNUM=<none>]]
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Sections:
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- Name: .note.ABI-tag
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Type: SHT_NOTE
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AddressAlign: 0x0000000000000004
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Content: 040000001000000001000000474E550000000000020000000600000020000000
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- Name: .note.gnu.build-id
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Type: SHT_NOTE
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Flags: [ SHF_ALLOC ]
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Address: 0x0000000000400120
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AddressAlign: 0x0000000000000004
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Content: 040000001000000003000000474E55004FCB712AA6387724A9F465A32CD8C14B
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- Name: .note.gnu.gold-version
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Type: SHT_NOTE
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AddressAlign: 0x0000000000000004
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Content: 040000000900000004000000474E5500676F6C6420312E3131000000
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ProgramHeaders:
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- Type: PT_NOTE
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FileSize: 0x20
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FirstSec: .note.gnu.build-id
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LastSec: .note.gnu.build-id
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## Test tools report an error if a note section has an invalid offset
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## that goes past the end of file.
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# RUN: yaml2obj --docnum=2 %s -o %t2.so
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# RUN: not llvm-readelf --notes %t2.so 2>&1 | FileCheck -DFILE=%t2.so %s --check-prefix=ERR1
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# RUN: not llvm-readobj --notes %t2.so 2>&1 | FileCheck -DFILE=%t2.so %s --check-prefix=ERR1
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# ERR1: error: '[[FILE]]': SHT_NOTE section [index 1] has invalid offset (0xffff0000) or size (0x0)
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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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Sections:
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- Name: .note
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Type: SHT_NOTE
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Notes: []
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ShOffset: 0xffff0000
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## Test tools report an error if a note section has invalid size
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## that goes past the end of file.
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# RUN: yaml2obj --docnum=3 %s -o %t3.so
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# RUN: not llvm-readelf --notes %t3.so 2>&1 | FileCheck -DFILE=%t3.so %s --check-prefix=ERR2
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# RUN: not llvm-readobj --notes %t3.so 2>&1 | FileCheck -DFILE=%t3.so %s --check-prefix=ERR2
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# ERR2: error: '[[FILE]]': SHT_NOTE section [index 1] has invalid offset (0x40) or size (0xffff0000)
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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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Sections:
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- Name: .note
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Type: SHT_NOTE
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ShSize: 0xffff0000
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Notes: []
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## Test tools report an error if a note program header has an invalid offset that
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## goes past the end of file.
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# RUN: yaml2obj --docnum=4 %s -o %t4.so
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# RUN: not llvm-readelf --notes %t4.so 2>&1 | FileCheck -DFILE=%t4.so %s --check-prefix=ERR3
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# RUN: not llvm-readobj --notes %t4.so 2>&1 | FileCheck -DFILE=%t4.so %s --check-prefix=ERR3
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# ERR3: error: '[[FILE]]': PT_NOTE header has invalid offset (0xffff0000) or size (0x0)
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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_CORE
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ProgramHeaders:
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- Type: PT_NOTE
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Offset: 0xffff0000
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## Test tools report an error if a note program header has an invalid size that
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## goes past the end of file.
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# RUN: yaml2obj --docnum=5 %s -o %t5.so
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# RUN: not llvm-readelf --notes %t5.so 2>&1 | FileCheck -DFILE=%t5.so %s --check-prefix=ERR4
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# RUN: not llvm-readobj --notes %t5.so 2>&1 | FileCheck -DFILE=%t5.so %s --check-prefix=ERR4
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# ERR4: error: '[[FILE]]': PT_NOTE header has invalid offset (0x78) or size (0xffff0000)
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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_CORE
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Sections:
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- Name: .note
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Type: SHT_NOTE
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Notes: []
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ProgramHeaders:
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- Type: PT_NOTE
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FileSize: 0xffff0000
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FirstSec: .note
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LastSec: .note
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## Check we report a warning when we are unable to locate the PT_NOTE
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## segment because of broken program headers.
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# RUN: yaml2obj --docnum=1 -DPHENTSIZE=1 -DSHNUM=0 %s -o %t6.so
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# RUN: llvm-readelf --notes %t6.so 2>&1 | FileCheck %s -DFILE=%t6.so --check-prefix=PHENTSIZE-WARN-GNU
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# RUN: llvm-readobj --notes %t6.so 2>&1 | FileCheck %s -DFILE=%t6.so --check-prefix=PHENTSIZE-WARN-LLVM
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# PHENTSIZE-WARN-GNU: warning: '[[FILE]]': unable to read program headers to locate the PT_DYNAMIC segment: invalid e_phentsize: 1
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# PHENTSIZE-WARN-GNU: warning: '[[FILE]]': unable to read program headers to locate the PT_NOTE segment: invalid e_phentsize: 1
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# PHENTSIZE-WARN-LLVM: Notes [
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# PHENTSIZE-WARN-LLVM-NEXT: warning: '[[FILE]]': unable to read program headers to locate the PT_NOTE segment: invalid e_phentsize: 1
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# PHENTSIZE-WARN-LLVM-NEXT: ]
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