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
76 lines
2.4 KiB
ArmAsm
76 lines
2.4 KiB
ArmAsm
# Check we are able to dump the dynamic section without a DT_NULL entry correctly.
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# RUN: yaml2obj --docnum=1 %s -o %t.o
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# RUN: llvm-readobj --dynamic-table %t.o | FileCheck %s --check-prefix=NONULL-LLVM
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# RUN: llvm-readelf --dynamic-table %t.o | FileCheck %s --check-prefix=NONULL-GNU
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# NONULL-LLVM: DynamicSection [ (1 entries)
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# NONULL-LLVM-NEXT: Tag Type Name/Value
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# NONULL-LLVM-NEXT: 0x0000000000000015 DEBUG 0x0
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# NONULL-LLVM-NEXT: ]
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# NONULL-GNU: Dynamic section at offset {{.*}} contains 1 entries:
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# NONULL-GNU-NEXT: Tag Type Name/Value
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# NONULL-GNU-NEXT: 0x0000000000000015 (DEBUG) 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: .dynamic
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Type: SHT_DYNAMIC
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Entries:
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- Tag: DT_DEBUG
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Value: 0x0000000000000000
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ProgramHeaders:
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- Type: PT_LOAD
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FirstSec: .dynamic
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LastSec: .dynamic
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- Type: PT_DYNAMIC
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FirstSec: .dynamic
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LastSec: .dynamic
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# Sometimes .dynamic section content length can be greater than the
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# length of its entries. In this case, we should not try to dump anything
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# past the DT_NULL entry, which works as a terminator.
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# RUN: yaml2obj --docnum=2 %s -o %t.o
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# RUN: llvm-readobj --dynamic-table %t.o | FileCheck %s --check-prefix=LONG-LLVM
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# RUN: llvm-readelf --dynamic-table %t.o | FileCheck %s --check-prefix=LONG-GNU
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# LONG-LLVM: DynamicSection [ (2 entries)
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# LONG-LLVM-NEXT: Tag Type Name/Value
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# LONG-LLVM-NEXT: 0x0000000000000015 DEBUG 0x0
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# LONG-LLVM-NEXT: 0x0000000000000000 NULL 0x0
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# LONG-LLVM-NEXT: ]
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# LONG-GNU: Dynamic section at offset {{.*}} contains 2 entries:
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# LONG-GNU-NEXT: Tag Type Name/Value
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# LONG-GNU-NEXT: 0x0000000000000015 (DEBUG) 0x0
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# LONG-GNU-NEXT: 0x0000000000000000 (NULL) 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: .dynamic
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Type: SHT_DYNAMIC
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Entries:
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- Tag: DT_DEBUG
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Value: 0x0000000000000000
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- Tag: DT_NULL
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Value: 0x0000000000000000
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- Tag: DT_NULL
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Value: 0x0000000000000000
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ProgramHeaders:
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- Type: PT_LOAD
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FirstSec: .dynamic
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LastSec: .dynamic
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- Type: PT_DYNAMIC
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FirstSec: .dynamic
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LastSec: .dynamic
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