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PR 28447: implement multiple parameters for .file on XCOFF

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On XCOFF, ".file" pseudo-op allows 3 extras parameters to provide
additional information to AIX linker, or its debugger. These are
stored in auxiliary entries of the C_FILE symbol.

bfd/
	PR 28447
	* coffcode.h (combined_entry_type): Add extrap field.
	(coff_bigobj_swap_aux_in): Adjust names of x_file fields.
	(coff_bigobj_swap_aux_out): Likewise.
	* coffgen.c (coff_write_auxent_fname): New function.
	(coff_fix_symbol_name): Write x_file using
	 coff_write_auxent_fname.
	(coff_write_symbol): Likewise.
	(coff_write_symbols): Add C_FILE auxiliary entries to
	string table if needed.
	(coff_get_normalized_symtab): Adjust names of x_file fields.
	Normalize C_FILE auxiliary entries.
	(coff_print_symbol): Print C_FILE auxiliary entries.
	* coff-rs6000.c (_bfd_xcoff_swap_aux_in): Adjust names of
	x_file fields.
	(_bfd_xcoff_swap_aux_out): Likewise.
	* coff64-rs6000.c (_bfd_xcoff64_swap_aux_in): Likewise.
	(_bfd_xcoff64_swap_aux_out): Likewise.
	* cofflink.c (_bfd_coff_final_link): Likewise.
	(_bfd_coff_link_input_bfd): Likewise.
	* coffswap.h (coff_swap_aux_in): Likewise.
	* peXXigen.c (_bfd_XXi_swap_aux_in): Likewise.
	(_bfd_XXi_swap_aux_out): Likewise.
	* xcofflink.c (xcoff_link_input_bfd): Likewise.
	* libcoff.h: Regenerate.
gas/
	* config/tc-ppc.c (ppc_file): New function.
	* config/tc-ppc.h (OBJ_COFF_MAX_AUXENTRIES): Change to 4.
	* testsuite/gas/ppc/aix.exp: Add tests.
	* testsuite/gas/ppc/xcoff-file-32.d: New test.
	* testsuite/gas/ppc/xcoff-file-64.d: New test.
	* testsuite/gas/ppc/xcoff-file.s: New test.
include/
	* coff/internal.h (union internal_auxent): Change x_file to be a
	  struct instead of a union. Add x_ftype field.
	* coff/rs6000.h (union external_auxent): Add x_resv field.
	* coff/xcoff.h (XFT_FN): New define.
	(XFT_CT): Likewise.
	(XFT_CV): Likewise.
	(XFT_CD): Likewise.
This commit is contained in:
Clément Chigot
2021-10-15 16:12:39 +02:00
committed by Alan Modra
parent f493b71179
commit e86fc4a5bc
18 changed files with 273 additions and 82 deletions
Download Patch File Download Diff File Expand all files Collapse all files

10
bfd/coffcode.h
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@@ -326,6 +326,10 @@ CODE_FRAGMENT
.
. {* Selector for the union above. *}
. bool is_sym;
.
. {* An extra pointer which can used by format based on COFF (like XCOFF)
. to provide extra information to their backend. *}
. void *extrap;
.} combined_entry_type;
.
.
@@ -5663,11 +5667,11 @@ coff_bigobj_swap_aux_in (bfd *abfd,
if (numaux > 1)
{
if (indx == 0)
memcpy (in->x_file.x_fname, ext->File.Name,
memcpy (in->x_file.x_n.x_fname, ext->File.Name,
numaux * sizeof (AUXENT_BIGOBJ));
}
else
memcpy (in->x_file.x_fname, ext->File.Name, sizeof (ext->File.Name));
memcpy (in->x_file.x_n.x_fname, ext->File.Name, sizeof (ext->File.Name));
break;
case C_STAT:
@@ -5712,7 +5716,7 @@ coff_bigobj_swap_aux_out (bfd * abfd,
switch (in_class)
{
case C_FILE:
memcpy (ext->File.Name, in->x_file.x_fname, sizeof (ext->File.Name));
memcpy (ext->File.Name, in->x_file.x_n.x_fname, sizeof (ext->File.Name));
return AUXESZ;