test/tools/llvm-objcopy/COFF/remove-section.test

   1 # RUN: yaml2obj %s > %t.in.o
   2 #
   3 # RUN: llvm-objdump -section-headers %t.in.o | FileCheck %s --check-prefixes=SECTIONS-PRE
   4 # RUN: llvm-objdump -t %t.in.o | FileCheck %s --check-prefixes=SYMBOLS-PRE
   5 #
   6 # RUN: llvm-objcopy -R .bss %t.in.o %t.remove-bss.o
   7 # RUN: llvm-objdump -section-headers %t.remove-bss.o | FileCheck %s --check-prefix=SECTIONS-REMOVE-BSS
   8 # RUN: llvm-objdump -t %t.remove-bss.o | FileCheck %s --check-prefix=SYMBOLS-REMOVE-BSS
   9 #
  10 # RUN: llvm-objcopy --remove-section .bss %t.in.o %t.cmp.o
  11 # RUN: cmp %t.remove-bss.o %t.cmp.o
  12 #
  13 # RUN: llvm-objcopy -R .text %t.in.o %t.remove-text.o
  14 # RUN: llvm-objdump -section-headers %t.remove-text.o | FileCheck %s --check-prefix=SECTIONS-REMOVE-TEXT
  15 # RUN: llvm-objdump -t %t.remove-text.o | FileCheck %s --check-prefix=SYMBOLS-REMOVE-TEXT
  16 #
  17 # RUN: not llvm-objcopy -R .comdat %t.in.o %t.remove-comdat.o 2>&1 | FileCheck %s --check-prefix=ERROR-RELOC
  18 #
  19 # RUN: llvm-objcopy -R .text -R .comdat %t.in.o %t.remove-text-comdat.o
  20 # RUN: llvm-objdump -section-headers %t.remove-text-comdat.o | FileCheck %s --check-prefix=SECTIONS-REMOVE-TEXT-COMDAT
  21 # RUN: llvm-objdump -t %t.remove-text-comdat.o | FileCheck %s --check-prefix=SYMBOLS-REMOVE-TEXT-COMDAT
  22 #
  23 #
  24 # SECTIONS-PRE: Sections:
  25 # SECTIONS-PRE-NEXT: Idx Name
  26 # SECTIONS-PRE-NEXT: 0 .text
  27 # SECTIONS-PRE-NEXT: 1 .bss
  28 # SECTIONS-PRE-NEXT: 2 .comdat
  29 # SECTIONS-PRE-NEXT: 3 .associative
  30 # SECTIONS-PRE-EMPTY:
  31 #
  32 # SYMBOLS-PRE: SYMBOL TABLE:
  33 # SYMBOLS-PRE-NEXT: {{.*}}(sec -1){{.*}} @feat.00
  34 # SYMBOLS-PRE-NEXT: {{.*}}(sec 1){{.*}} .text
  35 # SYMBOLS-PRE-NEXT: AUX scnlen {{.*}} assoc 1 comdat 0
  36 # SYMBOLS-PRE-NEXT: {{.*}}(sec 2){{.*}} .bss
  37 # SYMBOLS-PRE-NEXT: AUX scnlen {{.*}} assoc 2 comdat 0
  38 # SYMBOLS-PRE-NEXT: {{.*}}(sec 4){{.*}} .associative
  39 # SYMBOLS-PRE-NEXT: AUX scnlen {{.*}} assoc 3 comdat 5
  40 # SYMBOLS-PRE-NEXT: {{.*}}(sec 3){{.*}} .comdat
  41 # SYMBOLS-PRE-NEXT: AUX scnlen {{.*}} assoc 3 comdat 2
  42 # SYMBOLS-PRE-NEXT: {{.*}}(sec 3){{.*}} foo
  43 # SYMBOLS-PRE-NEXT: {{.*}}(sec 1){{.*}} main
  44 # SYMBOLS-PRE-EMPTY:
  45 #
  46 #
  47 # Removing the .bss section removes one symbol and its aux symbol,
  48 # and updates the section indices in symbols pointing to later
  49 # symbols, including the aux section defintitions.
  50 #
  51 # Testing that the absolute symbol @feat.00 survives the section number
  52 # mangling.
  53 #
  54 # SECTIONS-REMOVE-BSS: Sections:
  55 # SECTIONS-REMOVE-BSS-NEXT: Idx Name
  56 # SECTIONS-REMOVE-BSS-NEXT: 0 .text
  57 # SECTIONS-REMOVE-BSS-NEXT: 1 .comdat
  58 # SECTIONS-REMOVE-BSS-NEXT: 2 .associative
  59 # SECTIONS-REMOVE-BSS-EMPTY:
  60 #
  61 # SYMBOLS-REMOVE-BSS: SYMBOL TABLE:
  62 # SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec -1){{.*}} @feat.00
  63 # SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec 1){{.*}} .text
  64 # SYMBOLS-REMOVE-BSS-NEXT: AUX scnlen {{.*}} assoc 1 comdat 0
  65 # SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec 3){{.*}} .associative
  66 # SYMBOLS-REMOVE-BSS-NEXT: AUX scnlen {{.*}} assoc 2 comdat 5
  67 # SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec 2){{.*}} .comdat
  68 # SYMBOLS-REMOVE-BSS-NEXT: AUX scnlen {{.*}} assoc 2 comdat 2
  69 # SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec 2){{.*}} foo
  70 # SYMBOLS-REMOVE-BSS-NEXT: {{.*}}(sec 1){{.*}} main
  71 # SYMBOLS-REMOVE-BSS-EMPTY:
  72 #
  73 #
  74 # Removing the .text section is ok and just removes the external symbol
  75 # referring to it.
  76 #
  77 # SECTIONS-REMOVE-TEXT: Sections:
  78 # SECTIONS-REMOVE-TEXT-NEXT: Idx Name
  79 # SECTIONS-REMOVE-TEXT-NEXT: 0 .bss
  80 # SECTIONS-REMOVE-TEXT-NEXT: 1 .comdat
  81 # SECTIONS-REMOVE-TEXT-NEXT: 2 .associative
  82 # SECTIONS-REMOVE-TEXT-EMPTY:
  83 #
  84 # SYMBOLS-REMOVE-TEXT: SYMBOL TABLE:
  85 # SYMBOLS-REMOVE-TEXT-NEXT: {{.*}}(sec -1){{.*}} @feat.00
  86 # SYMBOLS-REMOVE-TEXT-NEXT: {{.*}}(sec 1){{.*}} .bss
  87 # SYMBOLS-REMOVE-TEXT-NEXT: AUX scnlen {{.*}} assoc 1 comdat 0
  88 # SYMBOLS-REMOVE-TEXT-NEXT: {{.*}}(sec 3){{.*}} .associative
  89 # SYMBOLS-REMOVE-TEXT-NEXT: AUX scnlen {{.*}} assoc 2 comdat 5
  90 # SYMBOLS-REMOVE-TEXT-NEXT: {{.*}}(sec 2){{.*}} .comdat
  91 # SYMBOLS-REMOVE-TEXT-NEXT: AUX scnlen {{.*}} assoc 2 comdat 2
  92 # SYMBOLS-REMOVE-TEXT-NEXT: {{.*}}(sec 2){{.*}} foo
  93 # SYMBOLS-REMOVE-TEXT-EMPTY:
  94 #
  95 #
  96 # Removing the .comdat section fails, since the .text section has relocations
  97 # against it.
  98 #
  99 # ERROR-RELOC: relocation target 'foo' ({{.*}}) not found
 100 #
 101 #
 102 # Removing the .comdat section and .text (with a relocation against .comdat)
 103 # works, as it also removes the .associative section transitively.
 104 #
 105 # SECTIONS-REMOVE-TEXT-COMDAT: Sections:
 106 # SECTIONS-REMOVE-TEXT-COMDAT-NEXT: Idx Name
 107 # SECTIONS-REMOVE-TEXT-COMDAT-NEXT: 0 .bss
 108 # SECTIONS-REMOVE-TEXT-COMDAT-EMPTY:
 109 #
 110 # SYMBOLS-REMOVE-TEXT-COMDAT: SYMBOL TABLE:
 111 # SYMBOLS-REMOVE-TEXT-COMDAT-NEXT: {{.*}}(sec -1){{.*}} @feat.00
 112 # SYMBOLS-REMOVE-TEXT-COMDAT-NEXT: {{.*}}(sec 1){{.*}} .bss
 113 # SYMBOLS-REMOVE-TEXT-COMDAT-NEXT: AUX scnlen {{.*}} assoc 1 comdat 0
 114 # SYMBOLS-REMOVE-TEXT-COMDAT-EMPTY:
 115
 116 --- !COFF
 117 header:
 118   Machine:         IMAGE_FILE_MACHINE_AMD64
 119   Characteristics: [  ]
 120 sections:
 121   - Name:            .text
 122     Characteristics: [  ]
 123     Alignment:       4
 124     SectionData:     488B0500000000C3
 125     Relocations:
 126       - VirtualAddress:  3
 127         SymbolName:      foo
 128         Type:            IMAGE_REL_AMD64_REL32
 129   - Name:            .bss
 130     Characteristics: [  ]
 131     Alignment:       4
 132     SectionData:     ''
 133   - Name:            .comdat
 134     Characteristics: [ IMAGE_SCN_LNK_COMDAT ]
 135     Alignment:       1
 136     SectionData:     '2A000000'
 137   - Name:            .associative
 138     Characteristics: [ IMAGE_SCN_LNK_COMDAT ]
 139     Alignment:       1
 140     SectionData:     '0000000000000000'
 141 symbols:
 142   - Name:            '@feat.00'
 143     Value:           0
 144     SectionNumber:   -1
 145     SimpleType:      IMAGE_SYM_TYPE_NULL
 146     ComplexType:     IMAGE_SYM_DTYPE_NULL
 147     StorageClass:    IMAGE_SYM_CLASS_STATIC
 148   - Name:            .text
 149     Value:           0
 150     SectionNumber:   1
 151     SimpleType:      IMAGE_SYM_TYPE_NULL
 152     ComplexType:     IMAGE_SYM_DTYPE_NULL
 153     StorageClass:    IMAGE_SYM_CLASS_STATIC
 154     SectionDefinition:
 155       Length:          8
 156       NumberOfRelocations: 1
 157       NumberOfLinenumbers: 0
 158       CheckSum:        583624169
 159       Number:          1
 160   - Name:            .bss
 161     Value:           0
 162     SectionNumber:   2
 163     SimpleType:      IMAGE_SYM_TYPE_NULL
 164     ComplexType:     IMAGE_SYM_DTYPE_NULL
 165     StorageClass:    IMAGE_SYM_CLASS_STATIC
 166     SectionDefinition:
 167       Length:          0
 168       NumberOfRelocations: 0
 169       NumberOfLinenumbers: 0
 170       CheckSum:        0
 171       Number:          2
 172   - Name:            .associative
 173     Value:           0
 174     SectionNumber:   4
 175     SimpleType:      IMAGE_SYM_TYPE_NULL
 176     ComplexType:     IMAGE_SYM_DTYPE_NULL
 177     StorageClass:    IMAGE_SYM_CLASS_STATIC
 178     SectionDefinition:
 179       Length:          8
 180       NumberOfRelocations: 0
 181       NumberOfLinenumbers: 0
 182       CheckSum:        0
 183       Number:          3
 184       Selection:       IMAGE_COMDAT_SELECT_ASSOCIATIVE
 185   - Name:            .comdat
 186     Value:           0
 187     SectionNumber:   3
 188     SimpleType:      IMAGE_SYM_TYPE_NULL
 189     ComplexType:     IMAGE_SYM_DTYPE_NULL
 190     StorageClass:    IMAGE_SYM_CLASS_STATIC
 191     SectionDefinition:
 192       Length:          4
 193       NumberOfRelocations: 0
 194       NumberOfLinenumbers: 0
 195       CheckSum:        3482275674
 196       Number:          3
 197       Selection:       IMAGE_COMDAT_SELECT_ANY
 198   - Name:            foo
 199     Value:           0
 200     SectionNumber:   3
 201     SimpleType:      IMAGE_SYM_TYPE_NULL
 202     ComplexType:     IMAGE_SYM_DTYPE_NULL
 203     StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
 204   - Name:            main
 205     Value:           0
 206     SectionNumber:   1
 207     SimpleType:      IMAGE_SYM_TYPE_NULL
 208     ComplexType:     IMAGE_SYM_DTYPE_NULL
 209     StorageClass:    IMAGE_SYM_CLASS_EXTERNAL
 210 ...