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Redo unknown reloc support. Do not allow symbols in .sdata/.sbss to satify a TOC16 relocation. Begin support R_PPC_SDA{2,}REL relocation.

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This commit is contained in:
Michael Meissner 1996-01-15 02:41:58 +00:00
parent ee4fdbb93d
commit bd2d10c006
2 changed files with 76 additions and 122 deletions
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9
bfd/ChangeLog
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@ -1,3 +1,12 @@
Sun Jan 14 21:36:08 1996 Michael Meissner <meissner@tiktok.cygnus.com>
* elf32-ppc.c (ppc_elf_{unsupported,std}_reloc): Remove functions.
(ppc_elf_howto_raw): Remove ppc_elf_{unsupported,std}_reloc
references.
(ppc_elf_relocate_section): No longer allow .sdata/.sbss sections
to satisfy a TOC16 relocation. Rewrite unsupported relocation
support. Begin support for R_PPC_SDA{2,}REL.
Sat Jan 13 09:36:52 1996 Michael Meissner <meissner@tiktok.cygnus.com>
* elf32-ppc.c (ppc_elf_create_dynamic_sections): New function to

189
bfd/elf32-ppc.c
View File

@ -99,11 +99,6 @@ enum ppc_reloc_type
R_PPC_max
};
static bfd_reloc_status_type ppc_elf_unsupported_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static bfd_reloc_status_type ppc_elf_std_reloc
PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
static reloc_howto_type *ppc_elf_reloc_type_lookup
PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
static void ppc_elf_info_to_howto
@ -168,7 +163,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_NONE", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -183,7 +178,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR32", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -199,7 +194,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR24", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -214,7 +209,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR16", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -229,7 +224,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR16_LO", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -244,7 +239,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR16_HI", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -276,7 +271,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_ADDR14", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -325,7 +320,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL24", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -340,7 +335,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL14", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -438,7 +433,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_GOT16_HA", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -454,7 +449,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLTREL24", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -473,7 +468,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_COPY", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -489,7 +484,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_GLOB_DAT", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -504,7 +499,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_JMP_SLOT", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -521,7 +516,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_RELATIVE", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -538,7 +533,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
true, /* pc_relative */
0, /* bitpos */
complain_overflow_signed, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_LOCAL24PC", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -553,7 +548,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_UADDR32", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -568,7 +563,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_UADDR16", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -583,7 +578,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
true, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_std_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_REL32", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -599,7 +594,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLT32", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -615,7 +610,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
true, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLTREL32", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -631,7 +626,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLT16_LO", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -647,7 +642,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLT16_HI", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -663,7 +658,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_PLT16_HA", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -671,7 +666,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false), /* pcrel_offset */
/* A sign-extended 16 bit value relative to _SDA_BASE, for use with
small data items. */
small data items. FIXME: Not supported. */
HOWTO (R_PPC_SDAREL16, /* type */
0, /* rightshift */
1, /* size (0 = byte, 1 = short, 2 = long) */
@ -695,7 +690,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
true, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SECTOFF", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -710,7 +705,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SECTOFF_LO", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -725,7 +720,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SECTOFF_HI", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -740,7 +735,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_SECTOFF_HA", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -758,7 +753,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_NADDR32", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -773,7 +768,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_bitfield, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_NADDR16", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -788,7 +783,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont,/* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_ADDR16_LO", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -803,7 +798,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_NADDR16_HI", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -820,7 +815,7 @@ static reloc_howto_type ppc_elf_howto_raw[] =
false, /* pc_relative */
0, /* bitpos */
complain_overflow_dont, /* complain_on_overflow */
ppc_elf_unsupported_reloc, /* special_function */
bfd_elf_generic_reloc, /* special_function */
"R_PPC_EMB_NADDR16_HA", /* name */
false, /* partial_inplace */
0, /* src_mask */
@ -1071,69 +1066,6 @@ ppc_elf_merge_private_bfd_data (ibfd, obfd)
return true;
}
/* ELF relocs are against symbols. If we are producing relocateable
output, and the reloc is against an external symbol, and nothing
has given us any additional addend, the resulting reloc will also
be against the same symbol. In such a case, we don't want to
change anything about the way the reloc is handled, since it will
all be done at final link time. Rather than put special case code
into bfd_perform_relocation, all the reloc types use this howto
function. It just short circuits the reloc if producing
relocateable output against an external symbol. */
/*ARGSUSED*/
static bfd_reloc_status_type
ppc_elf_std_reloc (abfd,
reloc_entry,
symbol,
data,
input_section,
output_bfd,
error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
if (output_bfd != (bfd *) NULL
&& (symbol->flags & BSF_SECTION_SYM) == 0
&& (! reloc_entry->howto->partial_inplace || reloc_entry->addend == 0))
{
reloc_entry->address += input_section->output_offset;
return bfd_reloc_ok;
}
return bfd_reloc_continue;
}
/* Don't pretend we can deal with unsupported relocs. */
/*ARGSUSED*/
static bfd_reloc_status_type
ppc_elf_unsupported_reloc (abfd, reloc_entry, symbol, data, input_section,
output_bfd, error_message)
bfd *abfd;
arelent *reloc_entry;
asymbol *symbol;
PTR data;
asection *input_section;
bfd *output_bfd;
char **error_message;
{
BFD_ASSERT (reloc_entry->howto != (reloc_howto_type *)0);
(*_bfd_error_handler)
("%s: relocation %s (%d) is not currently supported",
bfd_get_filename (abfd),
reloc_entry->howto->name,
reloc_entry->howto->type);
return bfd_reloc_notsupported;
}
/* Handle a PowerPC specific section when reading an object file. This
is called when elfcode.h finds a section with an unknown type. */
@ -2115,21 +2047,6 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
}
/* This is a final link. */
/* Complain about known relocation that are not yet supported */
if (howto->special_function == ppc_elf_unsupported_reloc)
{
(*_bfd_error_handler)
("%s: relocation %s (%d) is not currently supported",
bfd_get_filename (input_bfd),
howto->name,
(int)r_type);
bfd_set_error (bfd_error_bad_value);
ret = false;
continue;
}
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
@ -2325,9 +2242,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
BFD_ASSERT (sec != (asection *)0);
BFD_ASSERT (bfd_is_und_section (sec)
|| 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), ".sdata") == 0
|| strcmp (bfd_get_section_name (abfd, sec), ".sbss") == 0)
|| strcmp (bfd_get_section_name (abfd, sec), ".cgot") == 0)
addend -= sec->output_section->vma + 0x8000;
break;
@ -2337,6 +2252,37 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
addend += ((relocation + addend) & 0x8000) << 1;
break;
case R_PPC_SDAREL16: /* relocate against _SDA_BASE_ */
BFD_ASSERT (sec != (asection *)0);
if (strcmp (bfd_get_section_name (abfd, sec), ".sdata") != 0
&& strcmp (bfd_get_section_name (abfd, sec), ".sbss") != 0)
{
(*_bfd_error_handler) ("%s: The target of R_PPC_SDAREL16 relocations must be in section .sdata or .sbss not %s",
bfd_get_filename (input_bfd),
bfd_get_section_name (abfd, sec));
bfd_set_error (bfd_error_bad_value);
ret = false;
continue;
}
goto unsupported;
case R_PPC_EMB_SDA2REL:
BFD_ASSERT (sec != (asection *)0);
if (strcmp (bfd_get_section_name (abfd, sec), ".sdata2") != 0
&& strcmp (bfd_get_section_name (abfd, sec), ".sbss2") != 0)
{
(*_bfd_error_handler) ("%s: The target of R_PPC_SDA2REL16 relocations must be in section .sdata2 or .sbss2 not %s",
bfd_get_filename (input_bfd),
bfd_get_section_name (abfd, sec));
bfd_set_error (bfd_error_bad_value);
ret = false;
continue;
}
goto unsupported;
case R_PPC_PLTREL24:
case R_PPC_COPY:
case R_PPC_GLOB_DAT:
@ -2348,7 +2294,6 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
case R_PPC_PLT16_LO:
case R_PPC_PLT16_HI:
case R_PPC_PLT16_HA:
case R_PPC_SDAREL16:
case R_PPC_SECTOFF:
case R_PPC_SECTOFF_LO:
case R_PPC_SECTOFF_HI:
@ -2360,7 +2305,6 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
case R_PPC_EMB_NADDR16_HA:
case R_PPC_EMB_SDAI16:
case R_PPC_EMB_SDA2I16:
case R_PPC_EMB_SDA2REL:
case R_PPC_EMB_SDA21:
case R_PPC_EMB_MRKREF:
case R_PPC_EMB_RELSEC16:
@ -2369,6 +2313,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
case R_PPC_EMB_RELST_HA:
case R_PPC_EMB_BIT_FLD:
case R_PPC_EMB_RELSDA:
unsupported:
(*_bfd_error_handler) ("%s: Relocation %s is not yet supported.",
bfd_get_filename (input_bfd),
ppc_elf_howto_table[ (int)r_type ]->name);