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-rw-r--r--bfd/ChangeLog14
-rw-r--r--bfd/elf64-ppc.c139
-rw-r--r--binutils/ChangeLog4
-rw-r--r--binutils/readelf.c10
-rw-r--r--gas/ChangeLog8
-rw-r--r--gas/config/tc-ppc.c39
-rw-r--r--gas/config/tc-ppc.h3
-rw-r--r--include/elf/ChangeLog4
-rw-r--r--include/elf/ppc64.h7
9 files changed, 213 insertions, 15 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog
index 39060f3..2c4bb31 100644
--- a/bfd/ChangeLog
+++ b/bfd/ChangeLog
@@ -1,5 +1,19 @@
2013-10-30 Alan Modra <amodra@gmail.com>
+ * elf64-ppc.c (abiversion, set_abiversion): New functions.
+ (ppc64_elf_get_synthetic_symtab): Handle ELFv2 objects without .opd.
+ (struct ppc_link_hash_table): Add opd_abi.
+ (ppc64_elf_check_relocs): Check no .opd with ELFv2.
+ (ppc64_elf_merge_private_bfd_data): New function.
+ (ppc64_elf_print_private_bfd_data): New function.
+ (ppc64_elf_tls_setup): Set htab->opd_abi.
+ (ppc64_elf_size_dynamic_sections): Don't emit OPD related dynamic
+ tags for ELFv2.
+ (ppc_build_one_stub): Use R_PPC64_IRELATIVE for ELFv2 ifunc.
+ (ppc64_elf_finish_dynamic_symbol): Likewise
+
+2013-10-30 Alan Modra <amodra@gmail.com>
+
* elf64-ppc.c (build_plt_stub): Switch stubs to use r11 as base
reg and r12 as destination.
(ppc_build_one_stub): Likewise.
diff --git a/bfd/elf64-ppc.c b/bfd/elf64-ppc.c
index 94a9402..0067295 100644
--- a/bfd/elf64-ppc.c
+++ b/bfd/elf64-ppc.c
@@ -81,7 +81,8 @@ static bfd_vma opd_entry_value
#define bfd_elf64_mkobject ppc64_elf_mkobject
#define bfd_elf64_bfd_reloc_type_lookup ppc64_elf_reloc_type_lookup
#define bfd_elf64_bfd_reloc_name_lookup ppc64_elf_reloc_name_lookup
-#define bfd_elf64_bfd_merge_private_bfd_data _bfd_generic_verify_endian_match
+#define bfd_elf64_bfd_merge_private_bfd_data ppc64_elf_merge_private_bfd_data
+#define bfd_elf64_bfd_print_private_bfd_data ppc64_elf_print_private_bfd_data
#define bfd_elf64_new_section_hook ppc64_elf_new_section_hook
#define bfd_elf64_bfd_link_hash_table_create ppc64_elf_link_hash_table_create
#define bfd_elf64_bfd_link_hash_table_free ppc64_elf_link_hash_table_free
@@ -2943,6 +2944,19 @@ get_opd_info (asection * sec)
return &ppc64_elf_section_data (sec)->u.opd;
return NULL;
}
+
+static inline int
+abiversion (bfd *abfd)
+{
+ return elf_elfheader (abfd)->e_flags & EF_PPC64_ABI;
+}
+
+static inline void
+set_abiversion (bfd *abfd, int ver)
+{
+ elf_elfheader (abfd)->e_flags &= ~EF_PPC64_ABI;
+ elf_elfheader (abfd)->e_flags |= ver & EF_PPC64_ABI;
+}
/* Parameters for the qsort hook. */
static bfd_boolean synthetic_relocatable;
@@ -3089,15 +3103,19 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
long count;
char *names;
long symcount, codesecsym, codesecsymend, secsymend, opdsymend;
- asection *opd;
+ asection *opd = NULL;
bfd_boolean relocatable = (abfd->flags & (EXEC_P | DYNAMIC)) == 0;
asymbol **syms;
+ int abi = abiversion (abfd);
*ret = NULL;
- opd = bfd_get_section_by_name (abfd, ".opd");
- if (opd == NULL)
- return 0;
+ if (abi < 2)
+ {
+ opd = bfd_get_section_by_name (abfd, ".opd");
+ if (opd == NULL && abi == 1)
+ return 0;
+ }
symcount = static_count;
if (!relocatable)
@@ -3266,20 +3284,18 @@ ppc64_elf_get_synthetic_symtab (bfd *abfd,
else
{
bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
- bfd_byte *contents;
+ bfd_byte *contents = NULL;
size_t size;
long plt_count = 0;
bfd_vma glink_vma = 0, resolv_vma = 0;
asection *dynamic, *glink = NULL, *relplt = NULL;
arelent *p;
- if (!bfd_malloc_and_get_section (abfd, opd, &contents))
+ if (opd != NULL && !bfd_malloc_and_get_section (abfd, opd, &contents))
{
+ free_contents_and_exit:
if (contents)
- {
- free_contents_and_exit:
- free (contents);
- }
+ free (contents);
count = -1;
goto done;
}
@@ -3890,6 +3906,9 @@ struct ppc_link_hash_table
/* Alignment of PLT call stubs. */
unsigned int plt_stub_align:4;
+ /* Set if we're linking code with function descriptors. */
+ unsigned int opd_abi:1;
+
/* Set if PLT call stubs should load r11. */
unsigned int plt_static_chain:1;
@@ -5089,6 +5108,15 @@ ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
information about the associated function section. */
bfd_size_type amt;
+ if (abiversion (abfd) == 0)
+ set_abiversion (abfd, 1);
+ else if (abiversion (abfd) == 2)
+ {
+ info->callbacks->einfo (_("%P: .opd not allowed in ABI version %d\n"),
+ abiversion (abfd));
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
amt = sec->size * sizeof (*opd_sym_map) / 8;
opd_sym_map = bfd_zalloc (abfd, amt);
if (opd_sym_map == NULL)
@@ -5674,6 +5702,78 @@ ppc64_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
return TRUE;
}
+/* Merge backend specific data from an object file to the output
+ object file when linking. */
+
+static bfd_boolean
+ppc64_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
+{
+ unsigned long iflags, oflags;
+
+ if ((ibfd->flags & BFD_LINKER_CREATED) != 0)
+ return TRUE;
+
+ if (!is_ppc64_elf (ibfd) || !is_ppc64_elf (obfd))
+ return TRUE;
+
+ if (!_bfd_generic_verify_endian_match (ibfd, obfd))
+ return FALSE;
+
+ iflags = elf_elfheader (ibfd)->e_flags;
+ oflags = elf_elfheader (obfd)->e_flags;
+
+ if (!elf_flags_init (obfd) || oflags == 0)
+ {
+ elf_flags_init (obfd) = TRUE;
+ elf_elfheader (obfd)->e_flags = iflags;
+ }
+ else if (iflags == oflags || iflags == 0)
+ ;
+ else if (iflags & ~EF_PPC64_ABI)
+ {
+ (*_bfd_error_handler)
+ (_("%B uses unknown e_flags 0x%lx"), ibfd, iflags);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ else
+ {
+ (*_bfd_error_handler)
+ (_("%B: ABI version %ld is not compatible with ABI version %ld output"),
+ ibfd, iflags, oflags);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
+ /* Merge Tag_compatibility attributes and any common GNU ones. */
+ _bfd_elf_merge_object_attributes (ibfd, obfd);
+
+ return TRUE;
+}
+
+static bfd_boolean
+ppc64_elf_print_private_bfd_data (bfd *abfd, void *ptr)
+{
+ /* Print normal ELF private data. */
+ _bfd_elf_print_private_bfd_data (abfd, ptr);
+
+ if (elf_elfheader (abfd)->e_flags != 0)
+ {
+ FILE *file = ptr;
+
+ /* xgettext:c-format */
+ fprintf (file, _("private flags = 0x%lx:"),
+ elf_elfheader (abfd)->e_flags);
+
+ if ((elf_elfheader (abfd)->e_flags & EF_PPC64_ABI) != 0)
+ fprintf (file, _(" [abiv%ld]"),
+ elf_elfheader (abfd)->e_flags & EF_PPC64_ABI);
+ fputc ('\n', file);
+ }
+
+ return TRUE;
+}
+
/* OFFSET in OPD_SEC specifies a function descriptor. Return the address
of the code entry point, and its section. */
@@ -7711,6 +7811,9 @@ ppc64_elf_tls_setup (struct bfd_link_info *info,
if (htab == NULL)
return NULL;
+ if (abiversion (info->output_bfd) == 1)
+ htab->opd_abi = 1;
+
if (*no_multi_toc)
htab->do_multi_toc = 0;
else if (!htab->do_multi_toc)
@@ -9333,7 +9436,7 @@ readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
/* Set the sizes of the dynamic sections. */
static bfd_boolean
-ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
+ppc64_elf_size_dynamic_sections (bfd *output_bfd,
struct bfd_link_info *info)
{
struct ppc_link_hash_table *htab;
@@ -9649,7 +9752,7 @@ ppc64_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
return FALSE;
}
- if (NO_OPD_RELOCS)
+ if (NO_OPD_RELOCS && abiversion (output_bfd) <= 1)
{
if (!add_dynamic_entry (DT_PPC64_OPD, 0)
|| !add_dynamic_entry (DT_PPC64_OPDSZ, 0))
@@ -10412,7 +10515,10 @@ ppc_build_one_stub (struct bfd_hash_entry *gen_entry, void *in_arg)
bfd_byte *rl;
rela.r_offset = dest;
- rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
+ if (htab->opd_abi)
+ rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
+ else
+ rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
rela.r_addend = (stub_entry->target_value
+ stub_entry->target_section->output_offset
+ stub_entry->target_section->output_section->vma);
@@ -14271,7 +14377,10 @@ ppc64_elf_finish_dynamic_symbol (bfd *output_bfd,
rela.r_offset = (htab->iplt->output_section->vma
+ htab->iplt->output_offset
+ ent->plt.offset);
- rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
+ if (htab->opd_abi)
+ rela.r_info = ELF64_R_INFO (0, R_PPC64_JMP_IREL);
+ else
+ rela.r_info = ELF64_R_INFO (0, R_PPC64_IRELATIVE);
rela.r_addend = (h->root.u.def.value
+ h->root.u.def.section->output_offset
+ h->root.u.def.section->output_section->vma
diff --git a/binutils/ChangeLog b/binutils/ChangeLog
index ae50526..8457dc7 100644
--- a/binutils/ChangeLog
+++ b/binutils/ChangeLog
@@ -1,3 +1,7 @@
+2013-10-30 Alan Modra <amodra@gmail.com>
+
+ * readelf.c (get_machine_flags): Display ABI version for EM_PPC64.
+
2013-10-24 Nick Clifton <nickc@redhat.com>
* nm.c (display_rel_file): Treat bfd_error_no_symbols as
diff --git a/binutils/readelf.c b/binutils/readelf.c
index 7920100..ab2943d 100644
--- a/binutils/readelf.c
+++ b/binutils/readelf.c
@@ -2461,6 +2461,16 @@ get_machine_flags (unsigned e_flags, unsigned e_machine)
strcat (buf, _(", relocatable-lib"));
break;
+ case EM_PPC64:
+ if (e_flags & EF_PPC64_ABI)
+ {
+ char abi[] = ", abiv0";
+
+ abi[6] += e_flags & EF_PPC64_ABI;
+ strcat (buf, abi);
+ }
+ break;
+
case EM_V800:
if ((e_flags & EF_RH850_ABI) == EF_RH850_ABI)
strcat (buf, ", RH850 ABI");
diff --git a/gas/ChangeLog b/gas/ChangeLog
index a1b71b0..25e87d1 100644
--- a/gas/ChangeLog
+++ b/gas/ChangeLog
@@ -1,5 +1,13 @@
2013-10-30 Alan Modra <amodra@gmail.com>
+ * config/tc-ppc.c: Include elf/ppc64.h.
+ (ppc_abiversion): New variable.
+ (md_pseudo_table): Add .abiversion.
+ (ppc_elf_abiversion, ppc_elf_end): New functions.
+ * config/tc-ppc.h (md_end): Define.
+
+2013-10-30 Alan Modra <amodra@gmail.com>
+
* config/tc-ppc.c (SEX16): Don't mask.
(REPORT_OVERFLOW_HI): Define as zero.
(ppc_elf_suffix): Support @high, @higha, @dtprel@high, @dtprel@higha,
diff --git a/gas/config/tc-ppc.c b/gas/config/tc-ppc.c
index 34afc91..c249cec 100644
--- a/gas/config/tc-ppc.c
+++ b/gas/config/tc-ppc.c
@@ -29,6 +29,7 @@
#ifdef OBJ_ELF
#include "elf/ppc.h"
+#include "elf/ppc64.h"
#include "dwarf2dbg.h"
#endif
@@ -133,6 +134,7 @@ static void ppc_vbyte (int);
static void ppc_elf_cons (int);
static void ppc_elf_rdata (int);
static void ppc_elf_lcomm (int);
+static void ppc_elf_abiversion (int);
#endif
#ifdef TE_PE
@@ -203,6 +205,9 @@ unsigned long nop_limit = 4;
ppc_cpu_t ppc_cpu = 0;
ppc_cpu_t sticky = 0;
+/* Value for ELF e_flags EF_PPC64_ABI. */
+unsigned int ppc_abiversion = 0;
+
/* Flags set on encountering toc relocs. */
enum {
has_large_toc_reloc = 1,
@@ -261,6 +266,7 @@ const pseudo_typeS md_pseudo_table[] =
{ "rdata", ppc_elf_rdata, 0 },
{ "rodata", ppc_elf_rdata, 0 },
{ "lcomm", ppc_elf_lcomm, 0 },
+ { "abiversion", ppc_elf_abiversion, 0 },
#endif
#ifdef TE_PE
@@ -2220,6 +2226,39 @@ ppc_elf_lcomm (int xxx ATTRIBUTE_UNUSED)
demand_empty_rest_of_line ();
}
+/* Pseudo op to set ABI version. */
+static void
+ppc_elf_abiversion (int ignore ATTRIBUTE_UNUSED)
+{
+ expressionS exp;
+
+ expression (&exp);
+ if (exp.X_op == O_absent)
+ {
+ as_bad (_("missing expression in .abiversion directive"));
+ exp.X_op = O_constant;
+ exp.X_add_number = 0;
+ }
+
+ if (resolve_expression (&exp)
+ && exp.X_op == O_constant)
+ ppc_abiversion = exp.X_add_number;
+ else
+ as_bad (_(".abiversion expression does not evaluate to a constant"));
+ demand_empty_rest_of_line ();
+}
+
+/* Set ABI version in output file. */
+void
+ppc_elf_end (void)
+{
+ if (ppc_obj64 && ppc_abiversion != 0)
+ {
+ elf_elfheader (stdoutput)->e_flags &= ~EF_PPC64_ABI;
+ elf_elfheader (stdoutput)->e_flags |= ppc_abiversion & EF_PPC64_ABI;
+ }
+}
+
/* Validate any relocations emitted for -mrelocatable, possibly adding
fixups for word relocations in writable segments, so we can adjust
them at runtime. */
diff --git a/gas/config/tc-ppc.h b/gas/config/tc-ppc.h
index 3dd3f81..6095416 100644
--- a/gas/config/tc-ppc.h
+++ b/gas/config/tc-ppc.h
@@ -238,6 +238,9 @@ extern void ppc_frob_file_before_adjust (void);
#define tc_adjust_symtab() ppc_elf_adjust_symtab ()
extern void ppc_elf_adjust_symtab (void);
+extern void ppc_elf_end (void);
+#define md_end ppc_elf_end
+
#endif /* OBJ_ELF */
#if defined (OBJ_ELF) || defined (OBJ_XCOFF)
diff --git a/include/elf/ChangeLog b/include/elf/ChangeLog
index fae0bf8..2999bc8 100644
--- a/include/elf/ChangeLog
+++ b/include/elf/ChangeLog
@@ -1,5 +1,9 @@
2013-10-30 Alan Modra <amodra@gmail.com>
+ * ppc64.h (EF_PPC64_ABI): Define.
+
+2013-10-30 Alan Modra <amodra@gmail.com>
+
* ppc64.h (R_PPC64_ADDR16_HIGH, R_PPC64_ADDR16_HIGHA,
R_PPC64_TPREL16_HIGH, R_PPC64_TPREL16_HIGHA,
R_PPC64_DTPREL16_HIGH, R_PPC64_DTPREL16_HIGHA): New.
diff --git a/include/elf/ppc64.h b/include/elf/ppc64.h
index 221786f..1121649 100644
--- a/include/elf/ppc64.h
+++ b/include/elf/ppc64.h
@@ -173,6 +173,13 @@ END_RELOC_NUMBERS (R_PPC64_max)
(((R) >= R_PPC64_TLS && (R) <= R_PPC64_DTPREL16_HIGHESTA) \
|| ((R) >= R_PPC64_TPREL16_HIGH && (R) <= R_PPC64_DTPREL16_HIGHA))
+
+/* e_flags bits specifying ABI.
+ 1 for original function descriptor using ABI,
+ 2 for revised ABI without function descriptors,
+ 0 for unspecified or not using any features affected by the differences. */
+#define EF_PPC64_ABI 3
+
/* Specify the start of the .glink section. */
#define DT_PPC64_GLINK DT_LOPROC
generated by cgit v1.1 at 2024-12-12 16:04:57 +0000