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Don't attempt to compress bss sections

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It doesn't make sense to try to compress a section without contents
since those sections take no space on disk.  Compression can only
increase the disk image size.

	* coffgen.c (make_a_section_from_file): Exclude !SEC_HAS_CONTENTS
	sections from compression and decompression.
	* elf.c (_bfd_elf_make_section_from_shdr): Likewise.
This commit is contained in:
Alan Modra
2022-09-23 09:04:52 +09:30
parent 35cff32e9e
commit 4bea06d73c
2 changed files with 4 additions and 2 deletions
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3
bfd/coffgen.c
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@ -146,7 +146,8 @@ make_a_section_from_file (bfd *abfd,
/* Compress/decompress DWARF debug sections with names: .debug_* and /* Compress/decompress DWARF debug sections with names: .debug_* and
.zdebug_*, after the section flags is set. */ .zdebug_*, after the section flags is set. */
if ((flags & SEC_DEBUGGING) if ((flags & SEC_DEBUGGING) != 0
&& (flags & SEC_HAS_CONTENTS) != 0
&& strlen (name) > 7 && strlen (name) > 7
&& ((name[1] == 'd' && name[6] == '_') && ((name[1] == 'd' && name[6] == '_')
|| (strlen (name) > 8 && name[1] == 'z' && name[7] == '_'))) || (strlen (name) > 8 && name[1] == 'z' && name[7] == '_')))

3
bfd/elf.c
View File

@ -1201,7 +1201,8 @@ _bfd_elf_make_section_from_shdr (bfd *abfd,
/* Compress/decompress DWARF debug sections with names: .debug_* and /* Compress/decompress DWARF debug sections with names: .debug_* and
.zdebug_*, after the section flags is set. */ .zdebug_*, after the section flags is set. */
if ((newsect->flags & SEC_DEBUGGING) if ((newsect->flags & SEC_DEBUGGING) != 0
&& (newsect->flags & SEC_HAS_CONTENTS) != 0
&& ((name[1] == 'd' && name[6] == '_') && ((name[1] == 'd' && name[6] == '_')
|| (name[1] == 'z' && name[7] == '_'))) || (name[1] == 'z' && name[7] == '_')))
{ {