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Add support -mrelocatable-lib

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This commit is contained in:
Michael Meissner
1995-09-22 02:30:57 +00:00
parent 4493af6636
commit dd82c578be
2 changed files with 42 additions and 24 deletions
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6
bfd/ChangeLog
View File

@ -1,3 +1,9 @@
Thu Sep 21 21:53:18 1995 Michael Meissner <meissner@cygnus.com>
* elf32-ppc.c (ppc_elf_merge_private_bfd_data): Allow modules
compiled with -mrelocatable-lib to be linked with either normal
modules or -mrelocatable modules.
Wed Sep 20 12:03:26 1995 Ian Lance Taylor <ian@cygnus.com> Wed Sep 20 12:03:26 1995 Ian Lance Taylor <ian@cygnus.com>
* coffcode.h (coff_write_object_contents): Clear the vstamp field * coffcode.h (coff_write_object_contents): Clear the vstamp field

60
bfd/elf32-ppc.c
View File

@ -16,7 +16,7 @@ GNU General Public License for more details.
You should have received a copy of the GNU General Public License You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/* This file is based on a preliminary PowerPC ELF ABI. The /* This file is based on a preliminary PowerPC ELF ABI. The
information may not match the final PowerPC ELF ABI. It includes information may not match the final PowerPC ELF ABI. It includes
@ -35,7 +35,7 @@ static bfd_reloc_status_type ppc_elf_unsupported_reloc
static bfd_reloc_status_type ppc_elf_std_reloc static bfd_reloc_status_type ppc_elf_std_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_vma ppc_elf_addr16_ha_inner PARAMS ((asection *, bfd_vma, bfd_vma)); static bfd_vma ppc_elf_addr16_ha_inner PARAMS ((bfd_vma));
static bfd_reloc_status_type ppc_elf_addr16_ha_reloc static bfd_reloc_status_type ppc_elf_addr16_ha_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_vma ppc_elf_got16_inner PARAMS ((asection *sec)); static bfd_vma ppc_elf_got16_inner PARAMS ((asection *sec));
@ -643,16 +643,16 @@ static reloc_howto_type ppc_elf_howto_raw[] =
small data items. */ small data items. */
HOWTO (R_PPC_SDAREL, /* type */ HOWTO (R_PPC_SDAREL, /* type */
0, /* rightshift */ 0, /* rightshift */
2, /* size (0 = byte, 1 = short, 2 = long) */ 1, /* size (0 = byte, 1 = short, 2 = long) */
16, /* bitsize */ 16, /* bitsize */
false, /* pc_relative */ false, /* pc_relative */
0, /* bitpos */ 0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */ complain_overflow_signed, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */ ppc_elf_got16_reloc, /* special_function */
"R_PPC_SDAREL", /* name */ "R_PPC_SDAREL", /* name */
false, /* partial_inplace */ false, /* partial_inplace */
0, /* src_mask */ 0, /* src_mask */
0xffff, /* dst_mask */ 0xffff, /* dst_mask */
false), /* pcrel_offset */ false), /* pcrel_offset */
/* These next 4 relocations were added by Sun. */ /* These next 4 relocations were added by Sun. */
@ -834,6 +834,7 @@ ppc_elf_reloc_type_lookup (abfd, code)
case BFD_RELOC_LO16: return ppc_elf_howto_table[ (int) R_PPC_ADDR16_LO ]; case BFD_RELOC_LO16: return ppc_elf_howto_table[ (int) R_PPC_ADDR16_LO ];
case BFD_RELOC_HI16: return ppc_elf_howto_table[ (int) R_PPC_ADDR16_HI ]; case BFD_RELOC_HI16: return ppc_elf_howto_table[ (int) R_PPC_ADDR16_HI ];
case BFD_RELOC_HI16_S: return ppc_elf_howto_table[ (int) R_PPC_ADDR16_HA ]; case BFD_RELOC_HI16_S: return ppc_elf_howto_table[ (int) R_PPC_ADDR16_HA ];
case BFD_RELOC_GPREL16: return ppc_elf_howto_table[ (int) R_PPC_SDAREL ];
} }
return (reloc_howto_type *)NULL; return (reloc_howto_type *)NULL;
@ -931,21 +932,29 @@ ppc_elf_merge_private_bfd_data (ibfd, obfd)
else /* Incompatible flags */ else /* Incompatible flags */
{ {
/* Warn about -mrelocatable mismatch */ /* Warn about -mrelocatable mismatch. Allow -mrelocatable-lib to be linked
if ((new_flags & EF_PPC_RELOCATABLE) != 0 && (old_flags & EF_PPC_RELOCATABLE) == 0) with either. */
if ((new_flags & EF_PPC_RELOCATABLE) != 0
&& (old_flags & (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB)) == 0)
{ {
new_flags &= ~EF_PPC_RELOCATABLE; new_flags &= ~EF_PPC_RELOCATABLE;
fprintf (stderr, fprintf (stderr,
"%s: compiled with -mrelocatable and linked with modules compiled normally\n", "%s: compiled with -mrelocatable and linked with modules compiled normally\n",
bfd_get_filename (ibfd)); bfd_get_filename (ibfd));
} }
else if ((new_flags & EF_PPC_RELOCATABLE) == 0 && (old_flags & EF_PPC_RELOCATABLE) != 0) else if ((new_flags & EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB) == 0
&& (old_flags & EF_PPC_RELOCATABLE) != 0)
{ {
old_flags &= ~EF_PPC_RELOCATABLE; old_flags &= ~EF_PPC_RELOCATABLE;
fprintf (stderr, fprintf (stderr,
"%s: compiled normally and linked with modules compiled with -mrelocatable\n", "%s: compiled normally and linked with modules compiled with -mrelocatable\n",
bfd_get_filename (ibfd)); bfd_get_filename (ibfd));
} }
else if ((new_flags & EF_PPC_RELOCATABLE_LIB) != 0)
elf_elfheader (obfd)->e_flags |= EF_PPC_RELOCATABLE_LIB;
new_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB);
old_flags &= ~ (EF_PPC_RELOCATABLE | EF_PPC_RELOCATABLE_LIB);
/* Warn about eabi vs. V.4 mismatch */ /* Warn about eabi vs. V.4 mismatch */
if ((new_flags & EF_PPC_EMB) != 0 && (old_flags & EF_PPC_EMB) == 0) if ((new_flags & EF_PPC_EMB) != 0 && (old_flags & EF_PPC_EMB) == 0)
@ -1041,21 +1050,14 @@ ppc_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
/* Internal function to return the adjustment to the addend for relocations /* Internal function to return the adjustment to the addend for relocations
that return the upper 16 bits after sign extending the lower 16 bits, ie that return the upper 16 bits after sign extending the lower 16 bits, ie
for use with a ORIS instruction followed by a memory reference using the for use with a ADDIS instruction followed by a memory reference using the
bottom 16 bits. */ bottom 16 bits. */
INLINE INLINE
static bfd_vma static bfd_vma
ppc_elf_addr16_ha_inner (sec, value, addend) ppc_elf_addr16_ha_inner (relocation)
asection *sec; bfd_vma relocation;
bfd_vma value;
bfd_vma addend;
{ {
bfd_vma relocation = (value
+ sec->output_section->vma
+ sec->output_offset
+ addend);
return (relocation & 0x8000) << 1; return (relocation & 0x8000) << 1;
} }
@ -1073,13 +1075,20 @@ ppc_elf_addr16_ha_reloc (abfd, reloc_entry, symbol, data, input_section,
bfd *output_bfd; bfd *output_bfd;
char **error_message; char **error_message;
{ {
bfd_vma relocation;
asection *sec;
if (output_bfd != (bfd *) NULL) if (output_bfd != (bfd *) NULL)
return ppc_elf_std_reloc (abfd, reloc_entry, symbol, data, return ppc_elf_std_reloc (abfd, reloc_entry, symbol, data,
input_section, output_bfd, error_message); input_section, output_bfd, error_message);
reloc_entry->addend += ppc_elf_addr16_ha_inner (symbol->section, sec = symbol->section;
(bfd_is_com_section (symbol->section)) ? 0 : symbol->value, relocation = (((bfd_is_com_section (sec)) ? 0 : symbol->value)
reloc_entry->addend); + sec->output_section->vma
+ sec->output_offset
+ reloc_entry->addend);
reloc_entry->addend += ppc_elf_addr16_ha_inner (relocation);
return bfd_reloc_continue; return bfd_reloc_continue;
} }
@ -1093,7 +1102,9 @@ ppc_elf_got16_inner (sec)
{ {
BFD_ASSERT (bfd_is_und_section (sec) BFD_ASSERT (bfd_is_und_section (sec)
|| strcmp (bfd_get_section_name (abfd, sec), ".got") == 0 || strcmp (bfd_get_section_name (abfd, sec), ".got") == 0
|| strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0); || strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0
|| strcmp (bfd_get_section_name (abfd, sec), ".sdata") == 0
|| strcmp (bfd_get_section_name (abfd, sec), ".sbss") == 0)
return -(sec->output_section->vma + 0x8000); return -(sec->output_section->vma + 0x8000);
} }
@ -1298,13 +1309,14 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
case (int)R_PPC_GOT16: /* GOT16 relocations */ case (int)R_PPC_GOT16: /* GOT16 relocations */
case (int)R_PPC_GOT16_LO: case (int)R_PPC_GOT16_LO:
case (int)R_PPC_GOT16_HI: case (int)R_PPC_GOT16_HI:
case (int)R_PPC_SDAREL:
BFD_ASSERT (sec != (asection *)0); BFD_ASSERT (sec != (asection *)0);
addend += ppc_elf_got16_inner (sec); addend += ppc_elf_got16_inner (sec);
break; break;
case (int)R_PPC_ADDR16_HA: /* arithmetic adjust relocations */ case (int)R_PPC_ADDR16_HA: /* arithmetic adjust relocations */
BFD_ASSERT (sec != (asection *)0); BFD_ASSERT (sec != (asection *)0);
addend += ppc_elf_addr16_ha_inner (sec, relocation, addend); addend += ppc_elf_addr16_ha_inner (relocation + addend);
break; break;
} }