| James Henderson | 5772e02 | 2019-05-10 12:58:52 +0000 | [diff] [blame] | 1 | ## This test shows that when symbol/section names are optimized in the string |
| 2 | ## table to share the same entry, due to tail merging, llvm-objcopy operations |
| 3 | ## function correctly without corrupting the names of unchanged sections/symbols. |
| 4 | |
| 5 | # RUN: yaml2obj %s -o %t.o |
| 6 | ## Sanity check that the strings have been pooled. |
| 7 | # RUN: llvm-readobj %t.o --string-dump .strtab --string-dump .shstrtab \ |
| 8 | # RUN: | FileCheck %s --check-prefix=VALIDATE --implicit-check-not=bar --implicit-check-not=.blag |
| 9 | |
| 10 | # VALIDATE: String dump of section '.strtab': |
| 11 | # VALIDATE: bazfoobar |
| 12 | # VALIDATE: String dump of section '.shstrtab': |
| 13 | # VALIDATE: .blam.blah.blag |
| 14 | |
| 15 | ## Case 1: Basic copy. |
| 16 | # RUN: llvm-objcopy %t.o %t.copy |
| 17 | # RUN: llvm-readobj --section-headers --symbols %t.copy | FileCheck %s --check-prefix=COPY |
| 18 | |
| 19 | # COPY: Sections [ |
| 20 | # COPY: Name: .blam.blah.blag ( |
| 21 | # COPY: Name: .blah.blag ( |
| 22 | # COPY: Name: .blag ( |
| 23 | # COPY: Symbols [ |
| 24 | # COPY: Name: bar ( |
| 25 | # COPY: Name: foobar ( |
| 26 | # COPY: Name: bazfoobar ( |
| 27 | |
| 28 | ## Case 2: Rename section. |
| 29 | # RUN: llvm-objcopy %t.o %t.rename-section --rename-section .blah.blag=.blob.blab |
| 30 | # RUN: llvm-readobj --section-headers %t.rename-section \ |
| 31 | # RUN: | FileCheck %s --check-prefix=RENAME-SECTION |
| 32 | |
| 33 | # RENAME-SECTION: Sections [ |
| 34 | # RENAME-SECTION: Name: .blam.blah.blag ( |
| 35 | # RENAME-SECTION: Name: .blob.blab ( |
| 36 | # RENAME-SECTION: Name: .blag ( |
| 37 | |
| 38 | ## Case 3: Rename symbol. |
| 39 | # RUN: llvm-objcopy %t.o %t.rename-symbol --redefine-sym foobar=raboof |
| 40 | # RUN: llvm-readobj --symbols %t.rename-symbol \ |
| 41 | # RUN: | FileCheck %s --check-prefix=RENAME-SYMBOL |
| 42 | |
| 43 | # RENAME-SYMBOL: Symbols [ |
| 44 | # RENAME-SYMBOL: Name: bar ( |
| 45 | # RENAME-SYMBOL: Name: raboof ( |
| 46 | # RENAME-SYMBOL: Name: bazfoobar ( |
| 47 | |
| 48 | ## Case 4: Remove section. |
| 49 | # RUN: llvm-objcopy %t.o %t.remove-section -R .blah.blag |
| 50 | # RUN: llvm-readobj --section-headers %t.remove-section \ |
| 51 | # RUN: | FileCheck %s --check-prefix=REMOVE-SECTION --implicit-check-not .blah.blag |
| 52 | |
| 53 | # REMOVE-SECTION: Sections [ |
| 54 | # REMOVE-SECTION: Name: .blam.blah.blag ( |
| 55 | # REMOVE-SECTION: Name: .blag ( |
| 56 | |
| 57 | ## Case 5: Remove symbol. |
| 58 | # RUN: llvm-objcopy %t.o %t.remove-symbol -N foobar |
| 59 | # RUN: llvm-readobj --symbols %t.remove-symbol \ |
| 60 | # RUN: | FileCheck %s --check-prefix=REMOVE-SYMBOL --implicit-check-not foobar |
| 61 | |
| 62 | # REMOVE-SYMBOL: Symbols [ |
| 63 | # REMOVE-SYMBOL: Name: bar ( |
| 64 | # REMOVE-SYMBOL: Name: bazfoobar ( |
| 65 | |
| 66 | --- !ELF |
| 67 | FileHeader: |
| 68 | Class: ELFCLASS64 |
| 69 | Data: ELFDATA2LSB |
| 70 | Type: ET_EXEC |
| 71 | Machine: EM_X86_64 |
| 72 | Sections: |
| 73 | - Name: .blam.blah.blag |
| 74 | Type: SHT_PROGBITS |
| 75 | - Name: .blah.blag |
| 76 | Type: SHT_PROGBITS |
| 77 | - Name: .blag |
| 78 | Type: SHT_PROGBITS |
| 79 | Symbols: |
| 80 | - Name: bar |
| 81 | - Name: foobar |
| 82 | - Name: bazfoobar |