1 # This test makes sure that the .symtab_shndx section is automatically removed
2 # when it is not needed and added when it is.
4 RUN: %python %p/../Inputs/ungzip.py %p/Inputs/many-sections.o.gz > %t.0
6 # many-sections.o contains sections from s1 to s65535, each with a symbol.
7 # Remove enough so that the last section with a symbol has index
8 # SHN_LORESERVE (i.e. s65280), and show the section hasn't been removed.
9 RUN: llvm-objcopy -R 's65[3-9][0-9][0-9]' -R 's6529[0-9]' -R 's6528[1-9]' %t.0 %t2
10 RUN: llvm-readobj --sections %t2 | FileCheck --check-prefix=SHNDX %s
11 # Remove one more to cause removal of the section.
12 RUN: llvm-objcopy -R s65280 %t2 %t3
13 RUN: llvm-readobj --sections %t3 | FileCheck --check-prefix=NOSHNDX %s
15 # Add additional sections. No .symtab_shndx should be added, as they contain no
17 RUN: llvm-objcopy --add-section=newsec1=%t --add-section=newsec2=%t --add-section=newsec3=%t %t3 %t4
18 RUN: llvm-readobj --sections %t4 | FileCheck --check-prefix=NOSHNDX %s
20 # Add a symbol to one of these sections and show that the .symtab_shndx
21 # section has been created and that the new symbol has the right section index.
22 RUN: llvm-objcopy --add-symbol=newsym=newsec1:0 %t4 %t5
23 RUN: llvm-readobj --symbols --sections %t5 | \
24 RUN: FileCheck --check-prefixes=SHNDX,SHNDX-SYM -DSECTION=newsec1 %s
26 # Show that removing and adding symbols, but not their sections, has the same
27 # effect regarding removal/addition of the .symtab_shndx section.
28 # FIXME: llvm-objcopy does not currently remove this section in these
29 # circumstances. See https://bugs.llvm.org/show_bug.cgi?id=49364
30 # Test is left here to document the current behaviour.
31 RUN: llvm-objcopy -N 'sym65[3-9][0-9][0-9]' -N 'sym652[89][0-9]' -w %t.0 %t6
32 RUN: llvm-readobj --sections %t6 | not FileCheck --check-prefix=NOSHNDX %s
33 # FIXME: Remove these test lines once the bug has been fixed. They simply show
34 # that the section is removed by a run without any further operations.
35 RUN: llvm-objcopy %t6 %t6b
36 RUN: llvm-readobj --sections %t6b | FileCheck --check-prefix=NOSHNDX %s
38 # Add a symbol to ensure the section is reinstated.
39 RUN: llvm-objcopy --add-symbol=newsym=s65280:0 -w %t6 %t7
40 RUN: llvm-readobj --sections --symbols %t7 | \
41 RUN: FileCheck --check-prefixes=SHNDX,SHNDX-SYM -DSECTION=s65280 %s
43 NOSHNDX-NOT: Name: .symtab_shndx
44 SHNDX: Name: .symtab_shndx
45 SHNDX-SYM: Name: newsym
47 SHNDX-SYM-SAME: [[SECTION]]