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miscellaneous SEC_SMALL_DATA

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This patch arranges for symbols defined in .sdata and .sbss to be
reported by nm with 'g' and 's' flags, for coff targets that support
.sdata and .sbss.

The assembler changes regarding SEC_SMALL_DATA are really just
documentation.  As far as I'm aware, this won't change any assembler
output.

bfd/
	* coff-alpha.c (alpha_ecoff_le_vec): Add SEC_SMALL_DATA to
	applicable section flags.
	* coff-mips.c (mips_ecoff_le_vec, mips_ecoff_be_vec): Likewise.
	(mips_ecoff_bele_vec): Likewise.
	* coffcode.h (sec_to_styp_flags): Set SEC_SMALL_DATA for .sdata
	and .sbss sections.
	* ecoff.c (_bfd_ecoff_new_section_hook): Likewise.
	(_bfd_ecoff_styp_to_sec_flags): Likewise.
gas/
	* config/tc-m32r.c (md_begin): Set SEC_SMALL_DATA on .scommon section.
	* config/tc-mips.c (s_change_sec): Set SEC_SMALL_DATA for .sdata
	and .sbss sections.
	* config/tc-score.c: Delete !BFD_ASSEMBLER code throughout.
	(s3_s_change_sec): Set SEC_SMALL_DATA for .sbss section.
	(s3_s_score_lcomm): Likewise.
	* config/tc-score7.c: Similarly.
	* read.c (bss_alloc): Set SEC_SMALL_DATA for .sbss section.
This commit is contained in:
Alan Modra
2020-03-02 10:17:18 +10:30
parent bf57746745
commit a4dd6c97bd
11 changed files with 74 additions and 68 deletions
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17
bfd/ecoff.c
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@@ -156,14 +156,14 @@ _bfd_ecoff_new_section_hook (bfd *abfd, asection *section)
{ _INIT, SEC_ALLOC | SEC_CODE | SEC_LOAD },
{ _FINI, SEC_ALLOC | SEC_CODE | SEC_LOAD },
{ _DATA, SEC_ALLOC | SEC_DATA | SEC_LOAD },
{ _SDATA, SEC_ALLOC | SEC_DATA | SEC_LOAD },
{ _SDATA, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_SMALL_DATA },
{ _RDATA, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY},
{ _LIT8, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY},
{ _LIT4, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY},
{ _LIT8, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY | SEC_SMALL_DATA},
{ _LIT4, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY | SEC_SMALL_DATA},
{ _RCONST, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY},
{ _PDATA, SEC_ALLOC | SEC_DATA | SEC_LOAD | SEC_READONLY},
{ _BSS, SEC_ALLOC},
{ _SBSS, SEC_ALLOC},
{ _SBSS, SEC_ALLOC | SEC_SMALL_DATA},
/* An Irix 4 shared libary. */
{ _LIB, SEC_COFF_SHARED_LIBRARY}
};
@@ -412,16 +412,19 @@ _bfd_ecoff_styp_to_sec_flags (bfd *abfd ATTRIBUTE_UNUSED,
|| styp_flags == STYP_PDATA
|| styp_flags == STYP_RCONST)
sec_flags |= SEC_READONLY;
if (styp_flags & STYP_SDATA)
sec_flags |= SEC_SMALL_DATA;
}
else if ((styp_flags & STYP_BSS)
|| (styp_flags & STYP_SBSS))
else if (styp_flags & STYP_SBSS)
sec_flags |= SEC_ALLOC | SEC_SMALL_DATA;
else if (styp_flags & STYP_BSS)
sec_flags |= SEC_ALLOC;
else if ((styp_flags & STYP_INFO) || styp_flags == STYP_COMMENT)
sec_flags |= SEC_NEVER_LOAD;
else if ((styp_flags & STYP_LITA)
|| (styp_flags & STYP_LIT8)
|| (styp_flags & STYP_LIT4))
sec_flags |= SEC_DATA | SEC_LOAD | SEC_ALLOC | SEC_READONLY;
sec_flags |= SEC_DATA |SEC_SMALL_DATA | SEC_LOAD | SEC_ALLOC | SEC_READONLY;
else if (styp_flags & STYP_ECOFF_LIB)
sec_flags |= SEC_COFF_SHARED_LIBRARY;
else