| # RUN: llvm-readelf --elf-hash-histogram %p/Inputs/gnuhash.so.elf-ppc64 \ |
| # RUN: | FileCheck %s -check-prefix PPC64GNU |
| # RUN: llvm-readelf --elf-hash-histogram %p/Inputs/gnuhash.so.elf-x86_64 \ |
| # RUN: | FileCheck %s -check-prefix X86GNU |
| # RUN: llvm-readelf --elf-hash-histogram %p/Inputs/got-plt.exe.elf-mipsel \ |
| # RUN: | FileCheck %s -check-prefix SYSV |
| |
| # PPC64GNU: Histogram for `.gnu.hash' bucket list length (total of 3 buckets) |
| # PPC64GNU-NEXT: Length Number % of total Coverage |
| # PPC64GNU-NEXT: 0 1 ( 33.3%) 0.0% |
| # PPC64GNU-NEXT: 1 1 ( 33.3%) 25.0% |
| # PPC64GNU-NEXT: 2 0 ( 0.0%) 25.0% |
| # PPC64GNU-NEXT: 3 1 ( 33.3%) 100.0% |
| |
| # X86GNU: Histogram for `.gnu.hash' bucket list length (total of 3 buckets) |
| # X86GNU-NEXT: Length Number % of total Coverage |
| # X86GNU-NEXT: 0 1 ( 33.3%) 0.0% |
| # X86GNU-NEXT: 1 1 ( 33.3%) 25.0% |
| # X86GNU-NEXT: 2 0 ( 0.0%) 25.0% |
| # X86GNU-NEXT: 3 1 ( 33.3%) 100.0% |
| |
| # SYSV: Histogram for bucket list length (total of 3 buckets) |
| # SYSV-NEXT: Length Number % of total Coverage |
| # SYSV-NEXT: 0 0 ( 0.0%) 0.0% |
| # SYSV-NEXT: 1 0 ( 0.0%) 0.0% |
| # SYSV-NEXT: 2 2 ( 66.7%) 57.1% |
| # SYSV-NEXT: 3 1 ( 33.3%) 100.0% |
| |
| ## Show that we report a warning for a hash table which contains an entry of |
| ## the bucket array pointing to a cycle. |
| |
| # RUN: yaml2obj %s -o %t.o |
| # RUN: llvm-readelf --elf-hash-histogram 2>&1 %t.o | FileCheck -DFILE=%t.o %s --check-prefix BROKEN |
| |
| # BROKEN: warning: '[[FILE]]': .hash section is invalid: bucket 1: a cycle was detected in the linked chain |
| # BROKEN: Histogram for bucket list length (total of 1 buckets) |
| # BROKEN-NEXT: Length Number % of total Coverage |
| # BROKEN-NEXT: 0 0 ( 0.0%) 0.0% |
| # BROKEN-NEXT: 1 1 (100.0%) 100.0% |
| |
| --- !ELF |
| FileHeader: |
| Class: ELFCLASS32 |
| Data: ELFDATA2LSB |
| Type: ET_REL |
| Machine: EM_386 |
| Sections: |
| - Name: .hash |
| Type: SHT_HASH |
| Link: .dynsym |
| Bucket: [ 1 ] |
| Chain: [ 0, 1 ] |
| - Name: .dynamic |
| Type: SHT_DYNAMIC |
| Flags: [ SHF_ALLOC ] |
| Entries: |
| ## llvm-readelf will read the hash table from the file offset |
| ## p_offset + (p_vaddr - DT_HASH) = p_offset + (0 - 0) = p_offset, |
| ## which is the start of PT_LOAD, i.e. the file offset of .hash. |
| - Tag: DT_HASH |
| Value: 0x0 |
| - Tag: DT_NULL |
| Value: 0 |
| DynamicSymbols: |
| - Name: foo |
| ProgramHeaders: |
| - Type: PT_LOAD |
| Sections: |
| - Section: .hash |
| - Section: .dynamic |
