llvm/test/tools/llvm-objcopy/ELF/shared-strtab-shstrtab.s

   1 # REQUIRES: x86-registered-target
   2
   3 ## It is possible for the section header table and symbol table to share the
   4 ## same string table for storing section and symbol names. This test shows that
   5 ## under various circumstances, the names are still correct after llvm-objcopy
   6 ## has copied such an object file, and that the name table is still shared.
   7 ## This test uses the assembler rather than yaml2obj because yaml2obj generates
   8 ## separate string tables, whereas the assembler shares them.
   9
  10 # RUN: llvm-mc -filetype=obj -triple x86_64-pc-linux %s -o %t.o
  11 ## Verify check that the string tables are shared:
  12 # RUN: llvm-readobj --section-headers %t.o \
  13 # RUN:   | FileCheck %s --check-prefix=VALIDATE --implicit-check-not=.shstrtab
  14
  15 # VALIDATE: Name: .strtab
  16
  17 ## Case 1: basic copy.
  18 # RUN: llvm-objcopy %t.o %t.basic
  19 # RUN: llvm-readobj --section-headers --symbols %t.basic \
  20 # RUN:   | FileCheck %s --check-prefix=BASIC --implicit-check-not=.shstrtab
  21
  22 # BASIC: Sections [
  23 # BASIC:   Name: .strtab (
  24 # BASIC:   Name: .foo (
  25 # BASIC: Symbols [
  26 # BASIC:   Name: foo (
  27
  28 ## Case 2: renaming a section.
  29 # RUN: llvm-objcopy %t.o %t.rename-section --rename-section .foo=.oof
  30 # RUN: llvm-readobj --section-headers --symbols %t.rename-section \
  31 # RUN:   | FileCheck %s --check-prefix=SECTION-RENAME --implicit-check-not=.shstrtab
  32
  33 # SECTION-RENAME: Sections [
  34 # SECTION-RENAME:   Name: .strtab (
  35 # SECTION-RENAME:   Name: .oof (
  36 # SECTION-RENAME: Symbols [
  37 # SECTION-RENAME:   Name: foo (
  38
  39 ## Case 3: renaming a symbol.
  40 # RUN: llvm-objcopy %t.o %t.redefine-symbol --redefine-sym foo=oof
  41 # RUN: llvm-readobj --section-headers --symbols %t.redefine-symbol \
  42 # RUN:   | FileCheck %s --check-prefix=SYMBOL-RENAME --implicit-check-not=.shstrtab
  43
  44 # SYMBOL-RENAME: Sections [
  45 # SYMBOL-RENAME:   Name: .strtab (
  46 # SYMBOL-RENAME:   Name: .foo (
  47 # SYMBOL-RENAME: Symbols [
  48 # SYMBOL-RENAME:   Name: oof (
  49
  50 ## Case 4: removing a section.
  51 # RUN: llvm-objcopy %t.o %t.remove-section -R .foo
  52 # RUN: llvm-readobj --section-headers --symbols %t.remove-section \
  53 # RUN:   | FileCheck %s --check-prefix=SECTION-REMOVE --implicit-check-not=.shstrtab --implicit-check-not=.foo
  54
  55 # SECTION-REMOVE: Sections [
  56 # SECTION-REMOVE:   Name: .strtab (
  57 # SECTION-REMOVE: Symbols [
  58 # SECTION-REMOVE:   Name: foo (
  59
  60 ## Case 5: removing a symbol.
  61 # RUN: llvm-objcopy %t.o %t.remove-symbol -N foo
  62 # RUN: llvm-readobj --section-headers --symbols %t.remove-symbol \
  63 # RUN:   | FileCheck %s --check-prefix=SYMBOL-REMOVE --implicit-check-not=.shstrtab --implicit-check-not="Name: foo"
  64
  65 # SYMBOL-REMOVE: Sections [
  66 # SYMBOL-REMOVE:   Name: .strtab (
  67 # SYMBOL-REMOVE:   Name: .foo (
  68 # SYMBOL-REMOVE: Symbols [
  69
  70 ## Case 6: adding a section.
  71 # RUN: llvm-objcopy %t.o %t.add-section --add-section .bar=%s
  72 # RUN: llvm-readobj --section-headers --symbols %t.add-section \
  73 # RUN:   | FileCheck %s --check-prefix=SECTION-ADD --implicit-check-not=.shstrtab
  74
  75 # SECTION-ADD: Sections [
  76 # SECTION-ADD:   Name: .strtab (
  77 # SECTION-ADD:   Name: .foo (
  78 # SECTION-ADD:   Name: .bar (
  79 # SECTION-ADD: Symbols [
  80 # SECTION-ADD:   Name: foo (
  81
  82 ## Case 7: adding a symbol.
  83 # RUN: llvm-objcopy %t.o %t.add-symbol --add-symbol bar=0x1234
  84 # RUN: llvm-readobj --section-headers --symbols %t.add-symbol \
  85 # RUN:   | FileCheck %s --check-prefix=SYMBOL-ADD --implicit-check-not=.shstrtab
  86
  87 # SYMBOL-ADD: Sections [
  88 # SYMBOL-ADD:   Name: .strtab (
  89 # SYMBOL-ADD:   Name: .foo (
  90 # SYMBOL-ADD: Symbols [
  91 # SYMBOL-ADD:   Name: foo (
  92 # SYMBOL-ADD:   Name: bar (
  93
  94 ## Case 8: removing all symbols.
  95 # RUN: llvm-objcopy %t.o %t.strip-all --strip-all
  96 # RUN: llvm-readobj --section-headers --symbols %t.strip-all \
  97 # RUN:   | FileCheck %s --check-prefix=STRIP-ALL --implicit-check-not=.shstrtab
  98
  99 # STRIP-ALL:      Sections [
 100 # STRIP-ALL:        Name: .strtab (
 101 # STRIP-ALL:        Name: .foo (
 102 # STRIP-ALL:      Symbols [
 103 # STRIP-ALL-NEXT: ]
 104
 105 .section .foo,"a",@progbits
 106 foo = 0x4321