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Warn about relocations we do not yet support

This commit is contained in:
Michael Meissner 1996-01-13 14:40:50 +00:00
parent 1aac3d3c1f
commit 1c3a295b13
2 changed files with 149 additions and 11 deletions
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11
bfd/ChangeLog
View File

@ -1,3 +1,14 @@
Sat Jan 13 09:36:52 1996 Michael Meissner <meissner@tiktok.cygnus.com>
* elf32-ppc.c (ppc_elf_create_dynamic_sections): New function to
create the .got and .got.neg sections.
(ppc_elf_size_dynamic_sections): Call it.
(ppc_elf_check_relocs): Call it.
(ppc_elf_size_dynamic_sections): Support .got.neg, just like .got.
(ppc_elf_check_relocs): Add error messages for relocations we
don't yet support. Do not include R_PPC_SDAREL16 like a GOT
relocation.
Fri Jan 12 15:27:59 1996 Michael Meissner <meissner@tiktok.cygnus.com>
* elf32-ppc.c (ppc_elf_fake_sections): Define, and handle the new

149
bfd/elf32-ppc.c
View File

@ -117,6 +117,9 @@ static boolean ppc_elf_section_from_shdr PARAMS ((bfd *,
Elf32_Internal_Shdr *,
char *));
static bfd *ppc_elf_create_dynamic_sections PARAMS ((bfd *abfd,
struct bfd_link_info *info));
static boolean ppc_elf_check_relocs PARAMS ((bfd *,
struct bfd_link_info *,
asection *,
@ -1175,6 +1178,36 @@ ppc_elf_fake_sections (abfd, shdr, asect)
shdr->sh_type = SHT_ORDERED;
}
/* Create the PowerPC dynamic sections */
static bfd *
ppc_elf_create_dynamic_sections (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
struct elf_link_hash_entry *h;
struct elf_backend_data *bed = get_elf_backend_data (abfd);
/* Create the .got section. */
if (! _bfd_elf_create_got_section (abfd, info))
return (bfd *)0;
/* Also create the .got.neg section where we put negative offsets */
if (bfd_get_section_by_name (abfd, ".got.neg") == NULL)
{
asection *s = bfd_make_section (abfd, ".got.neg");
if (s == NULL
|| !bfd_set_section_flags (abfd, s,
SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY)
|| !bfd_set_section_alignment (abfd, s, 2))
return (bfd *)0;
}
elf_hash_table (info)->dynobj = abfd;
return abfd;
}
/* Adjust a symbol defined by a dynamic object and referenced by a
regular object. The current definition is in some section of the
@ -1261,6 +1294,11 @@ ppc_elf_size_dynamic_sections (output_bfd, info)
s = bfd_get_section_by_name (dynobj, ".rela.got");
if (s != NULL)
s->_raw_size = 0;
/* Ditto for .rela.got.neg */
s = bfd_get_section_by_name (dynobj, ".rela.got.neg");
if (s != NULL)
s->_raw_size = 0;
}
/* The check_relocs and adjust_dynamic_symbol entry points have
@ -1317,7 +1355,8 @@ ppc_elf_size_dynamic_sections (output_bfd, info)
}
}
else if (strcmp (name, ".plt") != 0
&& strcmp (name, ".got") != 0)
&& strcmp (name, ".got") != 0
&& strcmp (name, ".got.neg") != 0)
{
/* It's not one of our sections, so don't allocate space. */
continue;
@ -1425,7 +1464,9 @@ ppc_elf_check_relocs (abfd, info, sec, relocs)
const Elf_Internal_Rela *rel;
const Elf_Internal_Rela *rel_end;
asection *sgot;
asection *sgot_neg;
asection *srelgot;
asection *srelgot_neg;
asection *sreloc;
if (info->relocateable)
@ -1469,16 +1510,16 @@ ppc_elf_check_relocs (abfd, info, sec, relocs)
if (dynobj == NULL)
{
/* Create the .got section. */
elf_hash_table (info)->dynobj = dynobj = abfd;
if (! _bfd_elf_create_got_section (dynobj, info))
dynobj = ppc_elf_create_dynamic_sections (abfd, info);
if (!dynobj)
return false;
}
if (sgot == NULL)
{
sgot = bfd_get_section_by_name (dynobj, ".got");
BFD_ASSERT (sgot != NULL);
sgot_neg = bfd_get_section_by_name (dynobj, ".got.neg");
BFD_ASSERT (sgot != NULL && sgot_neg != NULL);
}
if (srelgot == NULL
@ -1498,6 +1539,21 @@ ppc_elf_check_relocs (abfd, info, sec, relocs)
|| ! bfd_set_section_alignment (dynobj, srelgot, 2))
return false;
}
srelgot_neg = bfd_get_section_by_name (dynobj, ".rela.got.neg");
if (srelgot_neg == NULL)
{
srelgot_neg = bfd_make_section (dynobj, ".rela.got.neg");
if (srelgot == NULL
|| ! bfd_set_section_flags (dynobj, srelgot_neg,
(SEC_ALLOC
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
| SEC_READONLY))
|| ! bfd_set_section_alignment (dynobj, srelgot, 2))
return false;
}
}
if (h != NULL)
@ -2019,10 +2075,9 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
/* Unknown relocation handling */
if ((unsigned)r_type >= (unsigned)R_PPC_max || !ppc_elf_howto_table[(int)r_type])
{
(*_bfd_error_handler)
("%s: unknown relocation type %d",
bfd_get_filename (input_bfd),
(int)r_type);
(*_bfd_error_handler) ("%s: unknown relocation type %d",
bfd_get_filename (input_bfd),
(int)r_type);
bfd_set_error (bfd_error_bad_value);
ret = false;
@ -2113,6 +2168,26 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
switch ((int)r_type)
{
default:
(*_bfd_error_handler) ("%s: unknown relocation type %d",
bfd_get_filename (input_bfd),
(int)r_type);
bfd_set_error (bfd_error_bad_value);
ret = false;
continue;
case R_PPC_NONE: /* relocations that need no special processing */
case R_PPC_ADDR32:
case R_PPC_ADDR24:
case R_PPC_ADDR16:
case R_PPC_ADDR16_LO:
case R_PPC_ADDR16_HI:
case R_PPC_ADDR14:
case R_PPC_REL24:
case R_PPC_REL14:
case R_PPC_UADDR32:
case R_PPC_UADDR16:
case R_PPC_REL32:
break;
case (int)R_PPC_ADDR14_BRTAKEN: /* branch taken prediction relocations */
@ -2138,8 +2213,20 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
case (int)R_PPC_GOT16: /* GOT16 relocations */
case (int)R_PPC_GOT16_LO:
case (int)R_PPC_GOT16_HI:
case (int)R_PPC_SDAREL16:
case (int)R_PPC_GOT16_HA:
#ifdef DEBUG
fprintf (stderr, "GOT relocations in section %s from section %s\n", input_section->name, sec->name);
#endif
if (dynobj == NULL)
{
dynobj = ppc_elf_create_dynamic_sections (output_bfd, info);
if (!dynobj)
{
ret = false;
continue;
}
}
BFD_ASSERT (sec != (asection *)0);
if (!sgot)
{
@ -2205,7 +2292,7 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
asection *srelgot;
Elf_Internal_Rela outrel;
/* We need to generate a R_SPARC_RELATIVE reloc
/* We need to generate a R_PPC_RELATIVE reloc
for the dynamic linker. */
srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
BFD_ASSERT (srelgot != NULL);
@ -2249,6 +2336,46 @@ ppc_elf_relocate_section (output_bfd, info, input_bfd, input_section,
BFD_ASSERT (sec != (asection *)0);
addend += ((relocation + addend) & 0x8000) << 1;
break;
case R_PPC_PLTREL24:
case R_PPC_COPY:
case R_PPC_GLOB_DAT:
case R_PPC_JMP_SLOT:
case R_PPC_RELATIVE:
case R_PPC_LOCAL24PC:
case R_PPC_PLT32:
case R_PPC_PLTREL32:
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:
case R_PPC_SECTOFF_HA:
case R_PPC_EMB_NADDR32:
case R_PPC_EMB_NADDR16:
case R_PPC_EMB_NADDR16_LO:
case R_PPC_EMB_NADDR16_HI:
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:
case R_PPC_EMB_RELST_LO:
case R_PPC_EMB_RELST_HI:
case R_PPC_EMB_RELST_HA:
case R_PPC_EMB_BIT_FLD:
case R_PPC_EMB_RELSDA:
(*_bfd_error_handler) ("%s: Relocation %s is not yet supported.",
bfd_get_filename (input_bfd),
ppc_elf_howto_table[ (int)r_type ]->name);
bfd_set_error (bfd_error_bad_value);
ret = false;
continue;
}