/* ARC-specific support for 32-bit ELF
- Copyright (C) 1994-2016 Free Software Foundation, Inc.
+ Copyright (C) 1994-2019 Free Software Foundation, Inc.
Contributed by Cupertino Miranda (cmiranda@synopsys.com).
This file is part of BFD, the Binary File Descriptor library.
#include "elf/arc.h"
#include "libiberty.h"
#include "opcode/arc-func.h"
+#include "opcode/arc.h"
#include "arc-plt.h"
-#ifdef DEBUG
-# define PR_DEBUG(fmt, args...) fprintf (stderr, fmt, ##args)
-#else
-# define PR_DEBUG(fmt, args...)
-#endif
+#define FEATURE_LIST_NAME bfd_feature_list
+#define CONFLICT_LIST bfd_conflict_list
+#include "opcode/arc-attrs.h"
-/* #define ARC_ENABLE_DEBUG 1 */
-#ifndef ARC_ENABLE_DEBUG
-#define ARC_DEBUG(...)
-#else
-static char *
+/* #define ARC_ENABLE_DEBUG 1 */
+#ifdef ARC_ENABLE_DEBUG
+static const char *
name_for_global_symbol (struct elf_link_hash_entry *h)
{
static char *local_str = "(local)";
if (h == NULL)
return local_str;
- else
- return h->root.root.string;
+ return h->root.root.string;
}
-#define ARC_DEBUG(args...) fprintf (stderr, ##args)
+#define ARC_DEBUG(fmt, args...) fprintf (stderr, fmt, ##args)
+#else
+#define ARC_DEBUG(...)
#endif
Elf_Internal_Rela _rel; \
bfd_byte * _loc; \
\
- _loc = _htab->srel##SECTION->contents \
- + ((_htab->srel##SECTION->reloc_count) \
- * sizeof (Elf32_External_Rela)); \
- _htab->srel##SECTION->reloc_count++; \
- _rel.r_addend = ADDEND; \
- _rel.r_offset = (_htab->s##SECTION)->output_section->vma \
- + (_htab->s##SECTION)->output_offset + OFFSET; \
- _rel.r_info = ELF32_R_INFO (SYM_IDX, TYPE); \
- bfd_elf32_swap_reloca_out (BFD, &_rel, _loc); \
+ if (_htab->dynamic_sections_created == TRUE) \
+ { \
+ BFD_ASSERT (_htab->srel##SECTION &&_htab->srel##SECTION->contents); \
+ _loc = _htab->srel##SECTION->contents \
+ + ((_htab->srel##SECTION->reloc_count) \
+ * sizeof (Elf32_External_Rela)); \
+ _htab->srel##SECTION->reloc_count++; \
+ _rel.r_addend = ADDEND; \
+ _rel.r_offset = (_htab->s##SECTION)->output_section->vma \
+ + (_htab->s##SECTION)->output_offset + OFFSET; \
+ BFD_ASSERT ((long) SYM_IDX != -1); \
+ _rel.r_info = ELF32_R_INFO (SYM_IDX, TYPE); \
+ bfd_elf32_swap_reloca_out (BFD, &_rel, _loc); \
+ } \
}
-struct arc_local_data
-{
- bfd_vma sdata_begin_symbol_vma;
- asection * sdata_output_section;
- bfd_vma got_symbol_vma;
-};
-
-struct arc_local_data global_arc_data =
-{
- .sdata_begin_symbol_vma = 0,
- .sdata_output_section = NULL,
- .got_symbol_vma = 0,
-};
-
-struct dynamic_sections
-{
- bfd_boolean initialized;
- asection * sgot;
- asection * srelgot;
- asection * sgotplt;
- asection * srelgotplt;
- asection * sdyn;
- asection * splt;
- asection * srelplt;
-};
-
-enum dyn_section_types
-{
- got = 0,
- relgot,
- gotplt,
- dyn,
- plt,
- relplt,
- DYN_SECTION_TYPES_END
-};
-
-const char * dyn_section_names[DYN_SECTION_TYPES_END] =
-{
- ".got",
- ".rela.got",
- ".got.plt",
- ".dynamic",
- ".plt",
- ".rela.plt"
-};
-
-enum tls_type_e
-{
- GOT_UNKNOWN = 0,
- GOT_NORMAL,
- GOT_TLS_GD,
- GOT_TLS_IE,
- GOT_TLS_LE
-};
-
-enum tls_got_entries
-{
- NONE = 0,
- MOD,
- OFF,
- MOD_AND_OFF
-};
-
-struct got_entry
-{
- struct got_entry *next;
- enum tls_type_e type;
- bfd_vma offset;
- bfd_boolean processed;
- bfd_boolean created_dyn_relocation;
- enum tls_got_entries existing_entries;
-};
-
-static void
-new_got_entry_to_list (struct got_entry **list,
- enum tls_type_e type,
- bfd_vma offset,
- enum tls_got_entries existing_entries)
-{
- /* Find list end. Avoid having multiple entries of the same
- type. */
- struct got_entry **p = list;
- while (*p != NULL)
- {
- if ((*p)->type == type)
- return;
- p = &((*p)->next);
- }
-
- struct got_entry *entry =
- (struct got_entry *) malloc (sizeof(struct got_entry));
-
- entry->type = type;
- entry->offset = offset;
- entry->next = NULL;
- entry->processed = FALSE;
- entry->created_dyn_relocation = FALSE;
- entry->existing_entries = existing_entries;
-
- /* Add the entry to the end of the list. */
- *p = entry;
-}
-
-static bfd_boolean
-symbol_has_entry_of_type (struct got_entry *list, enum tls_type_e type)
-{
- while (list != NULL)
- {
- if (list->type == type)
- return TRUE;
- list = list->next;
- }
-
- return FALSE;
-}
-
-/* The default symbols representing the init and fini dyn values.
- TODO: Check what is the relation of those strings with arclinux.em
- and DT_INIT. */
-#define INIT_SYM_STRING "_init"
-#define FINI_SYM_STRING "_fini"
-
-char * init_str = INIT_SYM_STRING;
-char * fini_str = FINI_SYM_STRING;
-
#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
case VALUE: \
return "R_" #TYPE; \
{
switch (type)
{
- #include "elf/arc-reloc.def"
+#include "elf/arc-reloc.def"
- default:
- return "UNKNOWN";
- break;
+ default:
+ return "UNKNOWN";
+ break;
}
}
+
#undef ARC_RELOC_HOWTO
/* Try to minimize the amount of space occupied by relocation tables
#define USE_REL 1
+/* Similar with bfd_get_32 but taking into account the
+ middle-endianess of the ARC CPUs. Only to be used in code
+ sections. */
+
+static bfd_vma
+bfd_get_32_me (bfd * abfd,const unsigned char * data)
+{
+ bfd_vma value = 0;
+
+ if (bfd_big_endian (abfd))
+ value = bfd_get_32 (abfd, data);
+ else
+ {
+ value = ((bfd_get_8 (abfd, data) & 255) << 16);
+ value |= ((bfd_get_8 (abfd, data + 1) & 255) << 24);
+ value |= (bfd_get_8 (abfd, data + 2) & 255);
+ value |= ((bfd_get_8 (abfd, data + 3) & 255) << 8);
+ }
+
+ return value;
+}
+
+static void
+bfd_put_32_me (bfd *abfd, bfd_vma value,unsigned char *data)
+{
+ bfd_put_16 (abfd, (value & 0xffff0000) >> 16, data);
+ bfd_put_16 (abfd, value & 0xffff, data + 2);
+}
+
static ATTRIBUTE_UNUSED bfd_boolean
is_reloc_PC_relative (reloc_howto_type *howto)
{
return (strstr (howto->name, "TLS") != NULL) ? TRUE : FALSE;
}
-#define arc_bfd_get_8(A,B,C) bfd_get_8(A,B)
-#define arc_bfd_get_16(A,B,C) bfd_get_16(A,B)
-#define arc_bfd_put_8(A,B,C,D) bfd_put_8(A,B,C)
-#define arc_bfd_put_16(A,B,C,D) bfd_put_16(A,B,C)
-
-static long
-arc_bfd_get_32 (bfd * abfd, void *loc, asection * input_section)
+struct arc_relocation_data
{
- long insn = bfd_get_32 (abfd, loc);
+ bfd_signed_vma reloc_offset;
+ bfd_signed_vma reloc_addend;
+ bfd_signed_vma got_offset_value;
- if (!bfd_big_endian (abfd)
- && input_section
- && (input_section->flags & SEC_CODE))
- insn = ((0x0000fffff & insn) << 16) | ((0xffff0000 & insn) >> 16);
+ bfd_signed_vma sym_value;
+ asection * sym_section;
- return insn;
-}
+ reloc_howto_type *howto;
-static void
-arc_bfd_put_32 (bfd * abfd, long insn, void *loc, asection * input_section)
+ asection * input_section;
+
+ bfd_signed_vma sdata_begin_symbol_vma;
+ bfd_boolean sdata_begin_symbol_vma_set;
+ bfd_signed_vma got_symbol_vma;
+
+ bfd_boolean should_relocate;
+
+ const char * symbol_name;
+};
+
+/* ARC ELF linker hash entry. */
+struct elf_arc_link_hash_entry
{
- if (!bfd_big_endian (abfd)
- && input_section
- && (input_section->flags & SEC_CODE))
- insn = ((0x0000fffff & insn) << 16) | ((0xffff0000 & insn) >> 16);
+ struct elf_link_hash_entry root;
+
+ /* Track dynamic relocs copied for this symbol. */
+ struct elf_dyn_relocs *dyn_relocs;
+
+ struct got_entry *got_ents;
+};
+
+
+/* Should be included at this location due to static declarations
+ defined before this point. */
+#include "arc-got.h"
+
+#define arc_bfd_get_8(A,B,C) bfd_get_8(A,B)
+#define arc_bfd_get_16(A,B,C) bfd_get_16(A,B)
+#define arc_bfd_get_32(A,B,C) bfd_get_32(A,B)
+#define arc_bfd_put_8(A,B,C,D) bfd_put_8(A,B,C)
+#define arc_bfd_put_16(A,B,C,D) bfd_put_16(A,B,C)
+#define arc_bfd_put_32(A,B,C,D) bfd_put_32(A,B,C)
- bfd_put_32 (abfd, insn, loc);
-}
static bfd_reloc_status_type
arc_elf_reloc (bfd *abfd ATTRIBUTE_UNUSED,
#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
TYPE = VALUE,
+
enum howto_list
{
#include "elf/arc-reloc.def"
HOWTO_LIST_LAST
};
+
#undef ARC_RELOC_HOWTO
#define ARC_RELOC_HOWTO(TYPE, VALUE, RSIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
- [TYPE] = HOWTO (R_##TYPE, 0, RSIZE, BITSIZE, FALSE, 0, complain_overflow_##OVERFLOW, arc_elf_reloc, "R_" #TYPE, FALSE, 0, 0, FALSE),
+ [TYPE] = HOWTO (R_##TYPE, 0, RSIZE, BITSIZE, FALSE, 0, \
+ complain_overflow_##OVERFLOW, arc_elf_reloc, \
+ "R_" #TYPE, FALSE, 0, 0, FALSE),
static struct reloc_howto_struct elf_arc_howto_table[] =
{
};
#undef ARC_RELOC_HOWTO
-static void arc_elf_howto_init (void)
+static void
+arc_elf_howto_init (void)
{
#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
- elf_arc_howto_table[TYPE].pc_relative = \
+ elf_arc_howto_table[TYPE].pc_relative = \
(strstr (#FORMULA, " P ") != NULL || strstr (#FORMULA, " PDATA ") != NULL); \
- elf_arc_howto_table[TYPE].dst_mask = RELOC_FUNCTION(0, ~0);
+ elf_arc_howto_table[TYPE].dst_mask = RELOC_FUNCTION(0, ~0); \
+ /* Only 32 bit data relocations should be marked as ME. */ \
+ if (strstr (#FORMULA, " ME ") != NULL) \
+ { \
+ BFD_ASSERT (SIZE == 2); \
+ }
#include "elf/arc-reloc.def"
+
}
#undef ARC_RELOC_HOWTO
#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
[TYPE] = VALUE,
+
const int howto_table_lookup[] =
{
#include "elf/arc-reloc.def"
};
+
#undef ARC_RELOC_HOWTO
static reloc_howto_type *
struct arc_reloc_map
{
bfd_reloc_code_real_type bfd_reloc_val;
- unsigned char elf_reloc_val;
+ unsigned char elf_reloc_val;
+};
+
+/* ARC ELF linker hash table. */
+struct elf_arc_link_hash_table
+{
+ struct elf_link_hash_table elf;
};
+static struct bfd_hash_entry *
+elf_arc_link_hash_newfunc (struct bfd_hash_entry *entry,
+ struct bfd_hash_table *table,
+ const char *string)
+{
+ struct elf_arc_link_hash_entry * ret =
+ (struct elf_arc_link_hash_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == NULL)
+ ret = (struct elf_arc_link_hash_entry *)
+ bfd_hash_allocate (table, sizeof (struct elf_arc_link_hash_entry));
+ if (ret == NULL)
+ return (struct bfd_hash_entry *) ret;
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct elf_arc_link_hash_entry *)
+ _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
+ table, string));
+ if (ret != NULL)
+ {
+ ret->dyn_relocs = NULL;
+ ret->got_ents = NULL;
+ }
+
+ return (struct bfd_hash_entry *) ret;
+}
+
+/* Destroy an ARC ELF linker hash table. */
+static void
+elf_arc_link_hash_table_free (bfd *obfd)
+{
+ _bfd_elf_link_hash_table_free (obfd);
+}
+
+/* Create an ARC ELF linker hash table. */
+
+static struct bfd_link_hash_table *
+arc_elf_link_hash_table_create (bfd *abfd)
+{
+ struct elf_arc_link_hash_table *ret;
+
+ ret = (struct elf_arc_link_hash_table *) bfd_zmalloc (sizeof (*ret));
+ if (ret == NULL)
+ return NULL;
+
+ if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd,
+ elf_arc_link_hash_newfunc,
+ sizeof (struct elf_arc_link_hash_entry),
+ ARC_ELF_DATA))
+ {
+ free (ret);
+ return NULL;
+ }
+
+ ret->elf.root.hash_table_free = elf_arc_link_hash_table_free;
+
+ return &ret->elf.root;
+}
+
#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
{ BFD_RELOC_##TYPE, R_##TYPE },
+
static const struct arc_reloc_map arc_reloc_map[] =
{
#include "elf/arc-reloc.def"
{BFD_RELOC_24, R_ARC_24},
{BFD_RELOC_32, R_ARC_32},
};
+
+#undef ARC_RELOC_HOWTO
+
+typedef ATTRIBUTE_UNUSED bfd_vma (*replace_func) (unsigned, int ATTRIBUTE_UNUSED);
+
+#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
+ case TYPE: \
+ func = (void *) RELOC_FUNCTION; \
+ break;
+
+static replace_func
+get_replace_function (bfd *abfd, unsigned int r_type)
+{
+ void *func = NULL;
+
+ switch (r_type)
+ {
+ #include "elf/arc-reloc.def"
+ }
+
+ if (func == replace_bits24 && bfd_big_endian (abfd))
+ func = replace_bits24_be;
+
+ return (replace_func) func;
+}
#undef ARC_RELOC_HOWTO
static reloc_howto_type *
switch (flags & EF_ARC_MACH_MSK)
{
- case EF_ARC_CPU_GENERIC : fprintf (file, " -mcpu=generic"); break;
case EF_ARC_CPU_ARCV2HS : fprintf (file, " -mcpu=ARCv2HS"); break;
case EF_ARC_CPU_ARCV2EM : fprintf (file, " -mcpu=ARCv2EM"); break;
case E_ARC_MACH_ARC600 : fprintf (file, " -mcpu=ARC600"); break;
case E_ARC_OSABI_ORIG : fprintf (file, " (ABI:legacy)"); break;
case E_ARC_OSABI_V2 : fprintf (file, " (ABI:v2)"); break;
case E_ARC_OSABI_V3 : fprintf (file, " (ABI:v3)"); break;
+ case E_ARC_OSABI_V4 : fprintf (file, " (ABI:v4)"); break;
default:
- fprintf (file, "(ABI:unknown)");
+ fprintf (file, " (ABI:unknown)");
break;
}
/* Set the howto pointer for an ARC ELF reloc. */
-static void
-arc_info_to_howto_rel (bfd * abfd ATTRIBUTE_UNUSED,
+static bfd_boolean
+arc_info_to_howto_rel (bfd * abfd,
arelent * cache_ptr,
Elf_Internal_Rela * dst)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
- BFD_ASSERT (r_type < (unsigned int) R_ARC_max);
+ if (r_type >= (unsigned int) R_ARC_max)
+ {
+ /* xgettext:c-format */
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+
cache_ptr->howto = arc_elf_howto (r_type);
+ return TRUE;
+}
+
+/* Extract CPU features from an NTBS. */
+
+static unsigned
+arc_extract_features (const char *p)
+{
+ unsigned i, r = 0;
+
+ if (!p)
+ return 0;
+
+ for (i = 0; i < ARRAY_SIZE (bfd_feature_list); i++)
+ {
+ char *t = strstr (p, bfd_feature_list[i].attr);
+ unsigned l = strlen (bfd_feature_list[i].attr);
+ if ((t != NULL)
+ && (t[l] == ','
+ || t[l] == '\0'))
+ r |= bfd_feature_list[i].feature;
+ }
+
+ return r;
+}
+
+/* Concatenate two strings. s1 can be NULL but not
+ s2. */
+
+static char *
+arc_stralloc (char * s1, const char * s2)
+{
+ char *p;
+
+ /* Only s1 can be null. */
+ BFD_ASSERT (s2);
+
+ p = s1 ? concat (s1, ",", s2, NULL) : (char *)s2;
+
+ return p;
+}
+
+/* Merge ARC object attributes from IBFD into OBFD. Raise an error if
+ there are conflicting attributes. */
+
+static bfd_boolean
+arc_elf_merge_attributes (bfd *ibfd, struct bfd_link_info *info)
+{
+ bfd *obfd = info->output_bfd;
+ obj_attribute *in_attr;
+ obj_attribute *out_attr;
+ int i;
+ bfd_boolean result = TRUE;
+ const char *sec_name = get_elf_backend_data (ibfd)->obj_attrs_section;
+ char *tagname = NULL;
+
+ /* Skip the linker stubs file. This preserves previous behavior
+ of accepting unknown attributes in the first input file - but
+ is that a bug? */
+ if (ibfd->flags & BFD_LINKER_CREATED)
+ return TRUE;
+
+ /* Skip any input that hasn't attribute section.
+ This enables to link object files without attribute section with
+ any others. */
+ if (bfd_get_section_by_name (ibfd, sec_name) == NULL)
+ return TRUE;
+
+ if (!elf_known_obj_attributes_proc (obfd)[0].i)
+ {
+ /* This is the first object. Copy the attributes. */
+ _bfd_elf_copy_obj_attributes (ibfd, obfd);
+
+ out_attr = elf_known_obj_attributes_proc (obfd);
+
+ /* Use the Tag_null value to indicate the attributes have been
+ initialized. */
+ out_attr[0].i = 1;
+
+ return TRUE;
+ }
+
+ in_attr = elf_known_obj_attributes_proc (ibfd);
+ out_attr = elf_known_obj_attributes_proc (obfd);
+
+ for (i = LEAST_KNOWN_OBJ_ATTRIBUTE; i < NUM_KNOWN_OBJ_ATTRIBUTES; i++)
+ {
+ /* Merge this attribute with existing attributes. */
+ switch (i)
+ {
+ case Tag_ARC_PCS_config:
+ if (out_attr[i].i == 0)
+ out_attr[i].i = in_attr[i].i;
+ else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i)
+ {
+ const char *tagval[] = { "Absent", "Bare-metal/mwdt",
+ "Bare-metal/newlib", "Linux/uclibc",
+ "Linux/glibc" };
+ BFD_ASSERT (in_attr[i].i < 5);
+ BFD_ASSERT (out_attr[i].i < 5);
+ /* It's sometimes ok to mix different configs, so this is only
+ a warning. */
+ _bfd_error_handler
+ (_("warning: %pB: conflicting platform configuration "
+ "%s with %s"), ibfd,
+ tagval[in_attr[i].i],
+ tagval[out_attr[i].i]);
+ }
+ break;
+
+ case Tag_ARC_CPU_base:
+ if (out_attr[i].i == 0)
+ out_attr[i].i = in_attr[i].i;
+ else if (in_attr[i].i != 0 && out_attr[i].i != in_attr[i].i
+ && ((out_attr[i].i + in_attr[i].i) < 6))
+ {
+ const char *tagval[] = { "Absent", "ARC6xx", "ARC7xx",
+ "ARCEM", "ARCHS" };
+ BFD_ASSERT (in_attr[i].i < 5);
+ BFD_ASSERT (out_attr[i].i < 5);
+ /* We cannot mix code for different CPUs. */
+ _bfd_error_handler
+ (_("error: %pB: unable to merge CPU base attributes "
+ "%s with %s"),
+ obfd,
+ tagval[in_attr[i].i],
+ tagval[out_attr[i].i]);
+ result = FALSE;
+ break;
+ }
+ else
+ {
+ /* The CPUs may be different, check if we can still mix
+ the objects against the output choosen CPU. */
+ unsigned in_feature = 0;
+ unsigned out_feature = 0;
+ char *p1 = in_attr[Tag_ARC_ISA_config].s;
+ char *p2 = out_attr[Tag_ARC_ISA_config].s;
+ unsigned j;
+ unsigned cpu_out;
+ unsigned opcode_map[] = {0, ARC_OPCODE_ARC600, ARC_OPCODE_ARC700,
+ ARC_OPCODE_ARCv2EM, ARC_OPCODE_ARCv2HS};
+
+ BFD_ASSERT (in_attr[i].i < (sizeof (opcode_map)
+ / sizeof (unsigned)));
+ BFD_ASSERT (out_attr[i].i < (sizeof (opcode_map)
+ / sizeof (unsigned)));
+ cpu_out = opcode_map[out_attr[i].i];
+
+ in_feature = arc_extract_features (p1);
+ out_feature = arc_extract_features (p2);
+
+ /* First, check if a feature is compatible with the
+ output object chosen CPU. */
+ for (j = 0; j < ARRAY_SIZE (bfd_feature_list); j++)
+ if (((in_feature | out_feature) & bfd_feature_list[j].feature)
+ && (!(cpu_out & bfd_feature_list[j].cpus)))
+ {
+ _bfd_error_handler
+ (_("error: %pB: unable to merge ISA extension attributes "
+ "%s"),
+ obfd, bfd_feature_list[j].name);
+ result = FALSE;
+ break;
+ }
+ /* Second, if we have compatible features with the
+ chosen CPU, check if they are compatible among
+ them. */
+ for (j = 0; j < ARRAY_SIZE (bfd_conflict_list); j++)
+ if (((in_feature | out_feature) & bfd_conflict_list[j])
+ == bfd_conflict_list[j])
+ {
+ unsigned k;
+ for (k = 0; k < ARRAY_SIZE (bfd_feature_list); k++)
+ {
+ if (in_feature & bfd_feature_list[k].feature
+ & bfd_conflict_list[j])
+ p1 = (char *) bfd_feature_list[k].name;
+ if (out_feature & bfd_feature_list[k].feature
+ & bfd_conflict_list[j])
+ p2 = (char *) bfd_feature_list[k].name;
+ }
+ _bfd_error_handler
+ (_("error: %pB: conflicting ISA extension attributes "
+ "%s with %s"),
+ obfd, p1, p2);
+ result = FALSE;
+ break;
+ }
+ /* Everithing is alright. */
+ out_feature |= in_feature;
+ p1 = NULL;
+ for (j = 0; j < ARRAY_SIZE (bfd_feature_list); j++)
+ if (out_feature & bfd_feature_list[j].feature)
+ p1 = arc_stralloc (p1, bfd_feature_list[j].attr);
+ if (p1)
+ out_attr[Tag_ARC_ISA_config].s =
+ _bfd_elf_attr_strdup (obfd, p1);
+ }
+ /* Fall through. */
+ case Tag_ARC_CPU_variation:
+ case Tag_ARC_ISA_mpy_option:
+ case Tag_ARC_ABI_osver:
+ /* Use the largest value specified. */
+ if (in_attr[i].i > out_attr[i].i)
+ out_attr[i].i = in_attr[i].i;
+ break;
+
+ /* The CPU name is given by the vendor, just choose an
+ existing one if missing or different. There are no fail
+ criteria if they different or both missing. */
+ case Tag_ARC_CPU_name:
+ if (!out_attr[i].s && in_attr[i].s)
+ out_attr[i].s = _bfd_elf_attr_strdup (obfd, in_attr[i].s);
+ break;
+
+ case Tag_ARC_ABI_rf16:
+ if (out_attr[i].i == 0)
+ out_attr[i].i = in_attr[i].i;
+ else if (out_attr[i].i != in_attr[i].i)
+ {
+ /* We cannot mix code with rf16 and without. */
+ _bfd_error_handler
+ (_("error: %pB: cannot mix rf16 with full register set %pB"),
+ obfd, ibfd);
+ result = FALSE;
+ }
+ break;
+
+ case Tag_ARC_ABI_pic:
+ tagname = "PIC";
+ /* fall through */
+ case Tag_ARC_ABI_sda:
+ if (!tagname)
+ tagname = "SDA";
+ /* fall through */
+ case Tag_ARC_ABI_tls:
+ {
+ const char *tagval[] = { "Absent", "MWDT", "GNU" };
+
+ if (!tagname)
+ tagname = "TLS";
+
+ BFD_ASSERT (in_attr[i].i < 3);
+ BFD_ASSERT (out_attr[i].i < 3);
+ if (out_attr[i].i == 0)
+ out_attr[i].i = in_attr[i].i;
+ else if (out_attr[i].i != 0 && in_attr[i].i != 0
+ && out_attr[i].i != in_attr[i].i)
+ {
+ _bfd_error_handler
+ (_("error: %pB: conflicting attributes %s: %s with %s"),
+ obfd, tagname,
+ tagval[in_attr[i].i],
+ tagval[out_attr[i].i]);
+ result = FALSE;
+ }
+ tagname = NULL;
+ break;
+ }
+
+ case Tag_ARC_ABI_double_size:
+ tagname = "Double size";
+ /* fall through */
+ case Tag_ARC_ABI_enumsize:
+ if (!tagname)
+ tagname = "Enum size";
+ /* fall through */
+ case Tag_ARC_ABI_exceptions:
+ if (!tagname)
+ tagname = "ABI exceptions";
+
+ if (out_attr[i].i == 0)
+ out_attr[i].i = in_attr[i].i;
+ else if (out_attr[i].i != 0 && in_attr[i].i != 0
+ && out_attr[i].i != in_attr[i].i)
+ {
+ _bfd_error_handler
+ (_("error: %pB: conflicting attributes %s"),
+ obfd, tagname);
+ result = FALSE;
+ }
+ break;
+
+ case Tag_ARC_ISA_apex:
+ break; /* Do nothing for APEX attributes. */
+
+ case Tag_ARC_ISA_config:
+ /* It is handled in Tag_ARC_CPU_base. */
+ break;
+
+ case Tag_ARC_ATR_version:
+ if (out_attr[i].i == 0)
+ out_attr[i].i = in_attr[i].i;
+ break;
+
+ default:
+ result
+ = result && _bfd_elf_merge_unknown_attribute_low (ibfd, obfd, i);
+ }
+
+ /* If out_attr was copied from in_attr then it won't have a type yet. */
+ if (in_attr[i].type && !out_attr[i].type)
+ out_attr[i].type = in_attr[i].type;
+ }
+
+ /* Merge Tag_compatibility attributes and any common GNU ones. */
+ if (!_bfd_elf_merge_object_attributes (ibfd, info))
+ return FALSE;
+
+ /* Check for any attributes not known on ARC. */
+ result &= _bfd_elf_merge_unknown_attribute_list (ibfd, obfd);
+
+ return result;
}
/* Merge backend specific data from an object file to the output
object file when linking. */
static bfd_boolean
-arc_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
+arc_elf_merge_private_bfd_data (bfd *ibfd, struct bfd_link_info *info)
{
+ bfd *obfd = info->output_bfd;
unsigned short mach_ibfd;
static unsigned short mach_obfd = EM_NONE;
flagword out_flags;
asection *sec;
/* Check if we have the same endianess. */
- if (! _bfd_generic_verify_endian_match (ibfd, obfd))
- {
- _bfd_error_handler (_("ERROR: Endian Match failed. Attempting to link "
- "%B with binary %s of opposite endian-ness"),
- ibfd, bfd_get_filename (obfd));
- return FALSE;
- }
+ if (! _bfd_generic_verify_endian_match (ibfd, info))
+ return FALSE;
+
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
/* Collect ELF flags. */
in_flags = elf_elfheader (ibfd)->e_flags & EF_ARC_MACH_MSK;
out_flags = in_flags;
}
- if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
- || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
- return TRUE;
+ if (!arc_elf_merge_attributes (ibfd, info))
+ return FALSE;
/* Check to see if the input BFD actually contains any sections. Do
not short-circuit dynamic objects; their section list may be
for (sec = ibfd->sections; sec != NULL; sec = sec->next)
{
- if ((bfd_get_section_flags (ibfd, sec)
+ if ((bfd_section_flags (sec)
& (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
== (SEC_LOAD | SEC_CODE | SEC_HAS_CONTENTS))
only_data_sections = FALSE;
{
if (mach_ibfd != mach_obfd)
{
- _bfd_error_handler (_("ERROR: Attempting to link %B "
- "with a binary %s of different architecture"),
- ibfd, bfd_get_filename (obfd));
+ /* xgettext:c-format */
+ _bfd_error_handler (_("error: attempting to link %pB "
+ "with a binary %pB of different architecture"),
+ ibfd, obfd);
return FALSE;
}
- else if (in_flags != out_flags)
+ else if ((in_flags != out_flags)
+ /* If we have object attributes, then we already
+ checked the objects compatibility, skip it. */
+ && !bfd_elf_get_obj_attr_int (ibfd, OBJ_ATTR_PROC,
+ Tag_ARC_CPU_base))
{
- /* Warn if different flags. */
- (*_bfd_error_handler)
- (_("%s: uses different e_flags (0x%lx) fields than "
- "previous modules (0x%lx)"),
- bfd_get_filename (ibfd), (long)in_flags, (long)out_flags);
if (in_flags && out_flags)
- return FALSE;
+ {
+ /* Warn if different flags. */
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: uses different e_flags (%#x) fields than "
+ "previous modules (%#x)"),
+ ibfd, in_flags, out_flags);
+ return FALSE;
+ }
/* MWDT doesnt set the eflags hence make sure we choose the
eflags set by gcc. */
in_flags = in_flags > out_flags ? in_flags : out_flags;
}
+ else
+ {
+ /* Everything is correct; don't change the output flags. */
+ in_flags = out_flags;
+ }
}
/* Update the flags. */
return TRUE;
}
+/* Return a best guess for the machine number based on the attributes. */
+
+static unsigned int
+bfd_arc_get_mach_from_attributes (bfd * abfd)
+{
+ int arch = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC, Tag_ARC_CPU_base);
+ unsigned e_machine = elf_elfheader (abfd)->e_machine;
+
+ switch (arch)
+ {
+ case TAG_CPU_ARC6xx:
+ return bfd_mach_arc_arc600;
+ case TAG_CPU_ARC7xx:
+ return bfd_mach_arc_arc700;
+ case TAG_CPU_ARCEM:
+ case TAG_CPU_ARCHS:
+ return bfd_mach_arc_arcv2;
+ default:
+ break;
+ }
+ return (e_machine == EM_ARC_COMPACT)
+ ? bfd_mach_arc_arc700 : bfd_mach_arc_arcv2;
+}
+
/* Set the right machine number for an ARC ELF file. */
static bfd_boolean
arc_elf_object_p (bfd * abfd)
/* Make sure this is initialised, or you'll have the potential of passing
garbage---or misleading values---into the call to
bfd_default_set_arch_mach (). */
- int mach = bfd_mach_arc_arc700;
+ unsigned int mach = bfd_mach_arc_arc700;
unsigned long arch = elf_elfheader (abfd)->e_flags & EF_ARC_MACH_MSK;
unsigned e_machine = elf_elfheader (abfd)->e_machine;
{
switch (arch)
{
- case E_ARC_MACH_ARC600:
- mach = bfd_mach_arc_arc600;
- break;
- case E_ARC_MACH_ARC601:
- mach = bfd_mach_arc_arc601;
- break;
- case E_ARC_MACH_ARC700:
- mach = bfd_mach_arc_arc700;
- break;
- case EF_ARC_CPU_ARCV2HS:
- case EF_ARC_CPU_ARCV2EM:
- mach = bfd_mach_arc_arcv2;
- break;
- default:
- mach = (e_machine == EM_ARC_COMPACT) ?
- bfd_mach_arc_arc700 : bfd_mach_arc_arcv2;
- break;
+ case E_ARC_MACH_ARC600:
+ mach = bfd_mach_arc_arc600;
+ break;
+ case E_ARC_MACH_ARC601:
+ mach = bfd_mach_arc_arc601;
+ break;
+ case E_ARC_MACH_ARC700:
+ mach = bfd_mach_arc_arc700;
+ break;
+ case EF_ARC_CPU_ARCV2HS:
+ case EF_ARC_CPU_ARCV2EM:
+ mach = bfd_mach_arc_arcv2;
+ break;
+ default:
+ mach = bfd_arc_get_mach_from_attributes (abfd);
+ break;
}
}
else
{
if (e_machine == EM_ARC)
{
- (*_bfd_error_handler)
- (_("Error: The ARC4 architecture is no longer supported.\n"));
+ _bfd_error_handler
+ (_("error: the ARC4 architecture is no longer supported"));
return FALSE;
}
else
{
- (*_bfd_error_handler)
- (_("Warning: unset or old architecture flags. \n"
- " Use default machine.\n"));
+ _bfd_error_handler
+ (_("warning: unset or old architecture flags; "
+ "use default machine"));
}
}
/* The final processing done just before writing out an ARC ELF object file.
This gets the ARC architecture right based on the machine number. */
-static void
-arc_elf_final_write_processing (bfd * abfd,
- bfd_boolean linker ATTRIBUTE_UNUSED)
+static bfd_boolean
+arc_elf_final_write_processing (bfd *abfd)
{
- unsigned long val;
unsigned long emf;
+ int osver = bfd_elf_get_obj_attr_int (abfd, OBJ_ATTR_PROC,
+ Tag_ARC_ABI_osver);
+ flagword e_flags = elf_elfheader (abfd)->e_flags & ~EF_ARC_OSABI_MSK;
switch (bfd_get_mach (abfd))
{
- case bfd_mach_arc_arc600:
- val = E_ARC_MACH_ARC600;
- emf = EM_ARC_COMPACT;
- break;
- case bfd_mach_arc_arc601:
- val = E_ARC_MACH_ARC601;
- emf = EM_ARC_COMPACT;
- break;
- case bfd_mach_arc_arc700:
- val = E_ARC_MACH_ARC700;
- emf = EM_ARC_COMPACT;
- break;
case bfd_mach_arc_arcv2:
- val = EF_ARC_CPU_GENERIC;
emf = EM_ARC_COMPACT2;
- /* TODO: Check validity of this. It can also be ARCV2EM here.
- Previous version sets the e_machine here. */
break;
default:
- abort ();
+ emf = EM_ARC_COMPACT;
+ break;
}
- if ((elf_elfheader (abfd)->e_flags & EF_ARC_MACH) == EF_ARC_CPU_GENERIC)
- elf_elfheader (abfd)->e_flags |= val;
elf_elfheader (abfd)->e_machine = emf;
/* Record whatever is the current syscall ABI version. */
- elf_elfheader (abfd)->e_flags |= E_ARC_OSABI_CURRENT;
-}
-
-#define BFD_DEBUG_PIC(...)
-
-struct arc_relocation_data
-{
- bfd_vma reloc_offset;
- bfd_vma reloc_addend;
- bfd_vma got_offset_value;
-
- bfd_vma sym_value;
- asection * sym_section;
-
- reloc_howto_type *howto;
-
- asection * input_section;
+ if (osver)
+ e_flags |= ((osver & 0x0f) << 8);
+ else
+ e_flags |= E_ARC_OSABI_V3;
- bfd_vma sdata_begin_symbol_vma;
- bfd_boolean sdata_begin_symbol_vma_set;
- bfd_vma got_symbol_vma;
+ elf_elfheader (abfd)->e_flags |= e_flags;
+ return _bfd_elf_final_write_processing (abfd);
+}
- bfd_boolean should_relocate;
-};
+#ifdef ARC_ENABLE_DEBUG
+#define DEBUG_ARC_RELOC(A) debug_arc_reloc (A)
static void
debug_arc_reloc (struct arc_relocation_data reloc_data)
{
- PR_DEBUG ("Reloc type=%s, should_relocate = %s\n",
- reloc_data.howto->name,
- reloc_data.should_relocate ? "true" : "false");
- PR_DEBUG (" offset = 0x%x, addend = 0x%x\n",
- (unsigned int) reloc_data.reloc_offset,
- (unsigned int) reloc_data.reloc_addend);
- PR_DEBUG (" Symbol:\n");
- PR_DEBUG (" value = 0x%08x\n",
- (unsigned int) reloc_data.sym_value);
+ ARC_DEBUG ("Reloc type=%s, should_relocate = %s\n",
+ reloc_data.howto->name,
+ reloc_data.should_relocate ? "true" : "false");
+ ARC_DEBUG (" offset = 0x%x, addend = 0x%x\n",
+ (unsigned int) reloc_data.reloc_offset,
+ (unsigned int) reloc_data.reloc_addend);
+ ARC_DEBUG (" Symbol:\n");
+ ARC_DEBUG (" value = 0x%08x\n",
+ (unsigned int) reloc_data.sym_value);
if (reloc_data.sym_section != NULL)
{
- PR_DEBUG ("IN IF\n");
- PR_DEBUG (
- " section name = %s, output_offset 0x%08x",
- reloc_data.sym_section->name,
- (unsigned int) reloc_data.sym_section->output_offset);
+ ARC_DEBUG (" Symbol Section:\n");
+ ARC_DEBUG (" section name = %s, output_offset 0x%08x",
+ reloc_data.sym_section->name,
+ (unsigned int) reloc_data.sym_section->output_offset);
if (reloc_data.sym_section->output_section != NULL)
- {
- PR_DEBUG (
- ", output_section->vma = 0x%08x",
+ ARC_DEBUG (", output_section->vma = 0x%08x",
((unsigned int) reloc_data.sym_section->output_section->vma));
- }
-
- PR_DEBUG ( "\n");
+ ARC_DEBUG ("\n");
+ if (reloc_data.sym_section->owner
+ && reloc_data.sym_section->owner->filename)
+ ARC_DEBUG (" file: %s\n", reloc_data.sym_section->owner->filename);
}
else
{
- PR_DEBUG ( " symbol section is NULL\n");
+ ARC_DEBUG (" symbol section is NULL\n");
}
- PR_DEBUG ( " Input_section:\n");
+ ARC_DEBUG (" Input_section:\n");
if (reloc_data.input_section != NULL)
{
- PR_DEBUG (
- " section name = %s, output_offset 0x%08x, output_section->vma = 0x%08x\n",
- reloc_data.input_section->name,
- (unsigned int) reloc_data.input_section->output_offset,
- (unsigned int) reloc_data.input_section->output_section->vma);
- PR_DEBUG ( " changed_address = 0x%08x\n",
- (unsigned int) (reloc_data.input_section->output_section->vma +
- reloc_data.input_section->output_offset +
- reloc_data.reloc_offset));
+ ARC_DEBUG (" section name = %s, output_offset 0x%08x, output_section->vma = 0x%08x\n",
+ reloc_data.input_section->name,
+ (unsigned int) reloc_data.input_section->output_offset,
+ (unsigned int) reloc_data.input_section->output_section->vma);
+ ARC_DEBUG (" changed_address = 0x%08x\n",
+ (unsigned int) (reloc_data.input_section->output_section->vma
+ + reloc_data.input_section->output_offset
+ + reloc_data.reloc_offset));
+ ARC_DEBUG (" file: %s\n", reloc_data.input_section->owner->filename);
}
else
{
- PR_DEBUG ( " input section is NULL\n");
+ ARC_DEBUG (" input section is NULL\n");
+ }
+}
+#else
+#define DEBUG_ARC_RELOC(A)
+#endif /* ARC_ENABLE_DEBUG */
+
+static bfd_vma
+middle_endian_convert (bfd_vma insn, bfd_boolean do_it)
+{
+ if (do_it)
+ {
+ insn
+ = ((insn & 0xffff0000) >> 16)
+ | ((insn & 0xffff) << 16);
}
+ return insn;
}
-static ATTRIBUTE_UNUSED bfd_vma
-get_middle_endian_relocation (bfd_vma reloc)
+/* This function is called for relocations that are otherwise marked as NOT
+ requiring overflow checks. In here we perform non-standard checks of
+ the relocation value. */
+
+static inline bfd_reloc_status_type
+arc_special_overflow_checks (const struct arc_relocation_data reloc_data,
+ bfd_signed_vma relocation,
+ struct bfd_link_info *info ATTRIBUTE_UNUSED)
{
- bfd_vma ret = ((reloc & 0xffff0000) >> 16) |
- ((reloc & 0xffff) << 16);
- return ret;
+ switch (reloc_data.howto->type)
+ {
+ case R_ARC_NPS_CMEM16:
+ if (((relocation >> 16) & 0xffff) != NPS_CMEM_HIGH_VALUE)
+ {
+ if (reloc_data.reloc_addend == 0)
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB(%pA+%#" PRIx64 "): CMEM relocation to `%s' is invalid, "
+ "16 MSB should be %#x (value is %#" PRIx64 ")"),
+ reloc_data.input_section->owner,
+ reloc_data.input_section,
+ (uint64_t) reloc_data.reloc_offset,
+ reloc_data.symbol_name,
+ NPS_CMEM_HIGH_VALUE,
+ (uint64_t) relocation);
+ else
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB(%pA+%#" PRIx64 "): CMEM relocation to `%s+%#" PRIx64
+ "' is invalid, 16 MSB should be %#x (value is %#" PRIx64 ")"),
+ reloc_data.input_section->owner,
+ reloc_data.input_section,
+ (uint64_t) reloc_data.reloc_offset,
+ reloc_data.symbol_name,
+ (uint64_t) reloc_data.reloc_addend,
+ NPS_CMEM_HIGH_VALUE,
+ (uint64_t) relocation);
+ return bfd_reloc_overflow;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return bfd_reloc_ok;
}
-#define S (reloc_data.sym_value \
+#define ME(reloc) (reloc)
+
+#define IS_ME(FORMULA,BFD) ((strstr (FORMULA, "ME") != NULL) \
+ && (!bfd_big_endian (BFD)))
+
+#define S ((bfd_signed_vma) (reloc_data.sym_value \
+ (reloc_data.sym_section->output_section != NULL ? \
(reloc_data.sym_section->output_offset \
- + reloc_data.sym_section->output_section->vma) : 0) \
- )
-#define L (reloc_data.sym_value \
+ + reloc_data.sym_section->output_section->vma) : 0)))
+#define L ((bfd_signed_vma) (reloc_data.sym_value \
+ (reloc_data.sym_section->output_section != NULL ? \
(reloc_data.sym_section->output_offset \
- + reloc_data.sym_section->output_section->vma) : 0) \
- )
+ + reloc_data.sym_section->output_section->vma) : 0)))
#define A (reloc_data.reloc_addend)
#define B (0)
#define G (reloc_data.got_offset_value)
#define MES (0)
/* P: relative offset to PCL The offset should be to the
current location aligned to 32 bits. */
-#define P ( \
+#define P ((bfd_signed_vma) ( \
( \
(reloc_data.input_section->output_section != NULL ? \
reloc_data.input_section->output_section->vma : 0) \
+ reloc_data.input_section->output_offset \
- + (reloc_data.reloc_offset - (bitsize >= 32 ? 4 : 0)) \
- ) & ~0x3)
-#define PDATA ( \
+ + (reloc_data.reloc_offset - (bitsize >= 32 ? 4 : 0))) \
+ & ~0x3))
+#define PDATA ((bfd_signed_vma) ( \
(reloc_data.input_section->output_section->vma \
+ reloc_data.input_section->output_offset \
- + (reloc_data.reloc_offset) \
- ))
-#define SECTSTAR (reloc_data.input_section->output_offset)
-#define SECTSTART (reloc_data.input_section->output_offset)
-#define _SDA_BASE_ (reloc_data.sdata_begin_symbol_vma)
-#define TLS_REL ((elf_hash_table (info))->tls_sec->output_section->vma)
-#define _SDA_BASE_ (reloc_data.sdata_begin_symbol_vma)
-#define TLS_TBSS (8)
-#define TCB_SIZE (8)
-
-#define NON_ME(VALUE) (reverse_me (reloc_data, VALUE))
+ + (reloc_data.reloc_offset))))
+#define SECTSTART (bfd_signed_vma) (reloc_data.sym_section->output_section->vma \
+ + reloc_data.sym_section->output_offset)
+#define FINAL_SECTSTART \
+ (bfd_signed_vma) (reloc_data.sym_section->output_section->vma)
+#define JLI (bfd_signed_vma) (reloc_data.sym_section->output_section->vma)
+#define _SDA_BASE_ (bfd_signed_vma) (reloc_data.sdata_begin_symbol_vma)
+#define TLS_REL (bfd_signed_vma) \
+ ((elf_hash_table (info))->tls_sec->output_section->vma)
+#define TLS_TBSS (align_power(TCB_SIZE, \
+ reloc_data.sym_section->alignment_power))
#define none (0)
-#define PRINT_DEBUG_RELOC_INFO_BEFORE(FORMULA) \
- {\
- asection *sym_section = reloc_data.sym_section; \
- asection *input_section = reloc_data.input_section; \
- ARC_DEBUG ("FORMULA = " #FORMULA "\n"); \
- ARC_DEBUG ("S = 0x%x\n", S); \
- ARC_DEBUG ("A = 0x%x\n", A); \
- ARC_DEBUG ("L = 0x%x\n", L); \
- if (sym_section->output_section != NULL) \
- { \
- ARC_DEBUG ("symbol_section->vma = 0x%x\n", \
- sym_section->output_section->vma + sym_section->output_offset); \
- } \
- else \
- { \
- ARC_DEBUG ("symbol_section->vma = NULL\n"); \
- } \
- if (input_section->output_section != NULL) \
- { \
- ARC_DEBUG ("symbol_section->vma = 0x%x\n", \
- input_section->output_section->vma + input_section->output_offset); \
- } \
- else \
- { \
- ARC_DEBUG ("symbol_section->vma = NULL\n"); \
- } \
- ARC_DEBUG ("PCL = 0x%x\n", P); \
- ARC_DEBUG ("P = 0x%x\n", P); \
- ARC_DEBUG ("G = 0x%x\n", G); \
- ARC_DEBUG ("SDA_OFFSET = 0x%x\n", _SDA_BASE_); \
+#ifdef ARC_ENABLE_DEBUG
+#define PRINT_DEBUG_RELOC_INFO_BEFORE(FORMULA, TYPE) \
+ do \
+ { \
+ asection *sym_section = reloc_data.sym_section; \
+ asection *input_section = reloc_data.input_section; \
+ ARC_DEBUG ("RELOC_TYPE = " TYPE "\n"); \
+ ARC_DEBUG ("FORMULA = " FORMULA "\n"); \
+ ARC_DEBUG ("S = %#lx\n", S); \
+ ARC_DEBUG ("A = %#lx\n", A); \
+ ARC_DEBUG ("L = %lx\n", L); \
+ if (sym_section->output_section != NULL) \
+ ARC_DEBUG ("symbol_section->vma = %#lx\n", \
+ sym_section->output_section->vma \
+ + sym_section->output_offset); \
+ else \
+ ARC_DEBUG ("symbol_section->vma = NULL\n"); \
+ if (input_section->output_section != NULL) \
+ ARC_DEBUG ("symbol_section->vma = %#lx\n", \
+ input_section->output_section->vma \
+ + input_section->output_offset); \
+ else \
+ ARC_DEBUG ("symbol_section->vma = NULL\n"); \
+ ARC_DEBUG ("PCL = %#lx\n", P); \
+ ARC_DEBUG ("P = %#lx\n", P); \
+ ARC_DEBUG ("G = %#lx\n", G); \
+ ARC_DEBUG ("SDA_OFFSET = %#lx\n", _SDA_BASE_); \
ARC_DEBUG ("SDA_SET = %d\n", reloc_data.sdata_begin_symbol_vma_set); \
- ARC_DEBUG ("GOT_OFFSET = 0x%x\n", GOT); \
- ARC_DEBUG ("relocation = 0x%08x\n", relocation); \
- ARC_DEBUG ("before = 0x%08x\n", (unsigned int) insn); \
- ARC_DEBUG ("data = 0x%08x (%u) (%d)\n", (unsigned int) relocation, (unsigned int) relocation, (int) relocation); \
- }
+ ARC_DEBUG ("GOT_OFFSET = %#lx\n", GOT); \
+ ARC_DEBUG ("relocation = %#08lx\n", relocation); \
+ ARC_DEBUG ("before = %#08x\n", (unsigned) insn); \
+ ARC_DEBUG ("data = %08x (%u) (%d)\n", (unsigned) relocation, \
+ (unsigned) relocation, (int) relocation); \
+ } \
+ while (0)
+
+#define PRINT_DEBUG_RELOC_INFO_AFTER \
+ do \
+ { \
+ ARC_DEBUG ("after = 0x%08x\n", (unsigned int) insn); \
+ } \
+ while (0)
-#define PRINT_DEBUG_RELOC_INFO_AFTER \
- { \
- ARC_DEBUG ("after = 0x%08x\n", (unsigned int) insn); \
- }
+#else
+
+#define PRINT_DEBUG_RELOC_INFO_BEFORE(...)
+#define PRINT_DEBUG_RELOC_INFO_AFTER
+
+#endif /* ARC_ENABLE_DEBUG */
#define ARC_RELOC_HOWTO(TYPE, VALUE, SIZE, BITSIZE, RELOC_FUNCTION, OVERFLOW, FORMULA) \
- case R_##TYPE: \
- { \
- bfd_vma bitsize ATTRIBUTE_UNUSED = BITSIZE; \
- relocation = FORMULA ; \
- PRINT_DEBUG_RELOC_INFO_BEFORE(FORMULA) \
- insn = RELOC_FUNCTION (insn, relocation); \
- PRINT_DEBUG_RELOC_INFO_AFTER \
- } \
+ case R_##TYPE: \
+ { \
+ bfd_signed_vma bitsize ATTRIBUTE_UNUSED = BITSIZE; \
+ relocation = FORMULA ; \
+ PRINT_DEBUG_RELOC_INFO_BEFORE (#FORMULA, #TYPE); \
+ insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \
+ insn = (* get_replace_function (abfd, TYPE)) (insn, relocation); \
+ insn = middle_endian_convert (insn, IS_ME (#FORMULA, abfd)); \
+ PRINT_DEBUG_RELOC_INFO_AFTER; \
+ } \
break;
-static bfd_vma
-reverse_me (struct arc_relocation_data reloc_data, bfd_vma reloc)
-{
- if (reloc_data.input_section && reloc_data.input_section->flags & SEC_CODE)
- return ((0x0000fffff & reloc) << 16) | ((0xffff0000 & reloc) >> 16);
- else
- return reloc;
-}
-
static bfd_reloc_status_type
arc_do_relocation (bfd_byte * contents,
struct arc_relocation_data reloc_data,
struct bfd_link_info *info)
{
- bfd_vma relocation = 0;
+ bfd_signed_vma relocation = 0;
bfd_vma insn;
bfd_vma orig_insn ATTRIBUTE_UNUSED;
+ bfd * abfd = reloc_data.input_section->owner;
struct elf_link_hash_table *htab ATTRIBUTE_UNUSED = elf_hash_table (info);
+ bfd_reloc_status_type flag;
- if (reloc_data.should_relocate == FALSE)
+ if (!reloc_data.should_relocate)
return bfd_reloc_ok;
switch (reloc_data.howto->size)
{
- case 2:
- insn = arc_bfd_get_32 (reloc_data.input_section->owner,
- contents + reloc_data.reloc_offset,
- reloc_data.input_section);
- break;
- case 1:
- case 0:
- insn = arc_bfd_get_16 (reloc_data.input_section->owner,
- contents + reloc_data.reloc_offset,
- reloc_data.input_section);
- break;
- default:
- insn = 0;
- BFD_ASSERT (0);
- break;
+ case 2:
+ insn = arc_bfd_get_32 (abfd,
+ contents + reloc_data.reloc_offset,
+ reloc_data.input_section);
+ break;
+ case 1:
+ insn = arc_bfd_get_16 (abfd,
+ contents + reloc_data.reloc_offset,
+ reloc_data.input_section);
+ break;
+ case 0:
+ insn = arc_bfd_get_8 (abfd,
+ contents + reloc_data.reloc_offset,
+ reloc_data.input_section);
+ break;
+ default:
+ insn = 0;
+ BFD_ASSERT (0);
+ break;
}
orig_insn = insn;
{
#include "elf/arc-reloc.def"
- default:
- BFD_ASSERT (0);
- break;
+ default:
+ BFD_ASSERT (0);
+ break;
}
/* Check for relocation overflow. */
if (reloc_data.howto->complain_on_overflow != complain_overflow_dont)
- {
- bfd_reloc_status_type flag;
- flag = bfd_check_overflow (reloc_data.howto->complain_on_overflow,
- reloc_data.howto->bitsize,
- reloc_data.howto->rightshift,
- bfd_arch_bits_per_address (reloc_data.input_section->owner),
- relocation);
-
-#undef DEBUG_ARC_RELOC
-#define DEBUG_ARC_RELOC(A) debug_arc_reloc (A)
- if (flag != bfd_reloc_ok)
- {
- PR_DEBUG ( "Relocation overflows !!!!\n");
+ flag = bfd_check_overflow (reloc_data.howto->complain_on_overflow,
+ reloc_data.howto->bitsize,
+ reloc_data.howto->rightshift,
+ bfd_arch_bits_per_address (abfd),
+ relocation);
+ else
+ flag = arc_special_overflow_checks (reloc_data, relocation, info);
- DEBUG_ARC_RELOC (reloc_data);
+ if (flag != bfd_reloc_ok)
+ {
+ ARC_DEBUG ("Relocation overflows !\n");
+ DEBUG_ARC_RELOC (reloc_data);
+ ARC_DEBUG ("Relocation value = signed -> %d, unsigned -> %u"
+ ", hex -> (0x%08x)\n",
+ (int) relocation, (unsigned) relocation, (int) relocation);
- PR_DEBUG (
- "Relocation value = signed -> %d, unsigned -> %u"
- ", hex -> (0x%08x)\n",
- (int) relocation,
- (unsigned int) relocation,
- (unsigned int) relocation);
- return flag;
- }
+ return flag;
}
-#undef DEBUG_ARC_RELOC
-#define DEBUG_ARC_RELOC(A)
+ /* Write updated instruction back to memory. */
switch (reloc_data.howto->size)
{
- case 2:
- arc_bfd_put_32 (reloc_data.input_section->owner, insn,
- contents + reloc_data.reloc_offset,
- reloc_data.input_section);
- break;
- case 1:
- case 0:
- arc_bfd_put_16 (reloc_data.input_section->owner, insn,
- contents + reloc_data.reloc_offset,
- reloc_data.input_section);
- break;
- default:
- ARC_DEBUG ("size = %d\n", reloc_data.howto->size);
- BFD_ASSERT (0);
+ case 2:
+ arc_bfd_put_32 (abfd, insn,
+ contents + reloc_data.reloc_offset,
+ reloc_data.input_section);
+ break;
+ case 1:
+ arc_bfd_put_16 (abfd, insn,
+ contents + reloc_data.reloc_offset,
+ reloc_data.input_section);
break;
+ case 0:
+ arc_bfd_put_8 (abfd, insn,
+ contents + reloc_data.reloc_offset,
+ reloc_data.input_section);
+ break;
+ default:
+ ARC_DEBUG ("size = %d\n", reloc_data.howto->size);
+ BFD_ASSERT (0);
+ break;
}
return bfd_reloc_ok;
#undef P
#undef SECTSTAR
#undef SECTSTART
+#undef JLI
#undef _SDA_BASE_
#undef none
#undef ARC_RELOC_HOWTO
-static struct got_entry **
-arc_get_local_got_ents (bfd * abfd)
-{
- static struct got_entry **local_got_ents = NULL;
-
- if (local_got_ents == NULL)
- {
- size_t size;
- Elf_Internal_Shdr *symtab_hdr = &((elf_tdata (abfd))->symtab_hdr);
-
- size = symtab_hdr->sh_info * sizeof (bfd_vma);
- local_got_ents = (struct got_entry **)
- bfd_alloc (abfd, sizeof(struct got_entry *) * size);
- if (local_got_ents == NULL)
- return FALSE;
-
- memset (local_got_ents, 0, sizeof(struct got_entry *) * size);
- elf_local_got_ents (abfd) = local_got_ents;
- }
-
- return local_got_ents;
-}
/* Relocate an arc ELF section.
Function : elf_arc_relocate_section
corresponding to the st_shndx field of each
local symbol. */
static bfd_boolean
-elf_arc_relocate_section (bfd * output_bfd,
+elf_arc_relocate_section (bfd * output_bfd,
struct bfd_link_info * info,
- bfd * input_bfd,
- asection * input_section,
- bfd_byte * contents,
+ bfd * input_bfd,
+ asection * input_section,
+ bfd_byte * contents,
Elf_Internal_Rela * relocs,
Elf_Internal_Sym * local_syms,
- asection ** local_sections)
+ asection ** local_sections)
{
- Elf_Internal_Shdr * symtab_hdr;
- struct elf_link_hash_entry ** sym_hashes;
- struct got_entry ** local_got_ents;
- Elf_Internal_Rela * rel;
- Elf_Internal_Rela * relend;
- struct elf_link_hash_table *htab = elf_hash_table (info);
+ Elf_Internal_Shdr * symtab_hdr;
+ struct elf_link_hash_entry ** sym_hashes;
+ Elf_Internal_Rela * rel;
+ Elf_Internal_Rela * wrel;
+ Elf_Internal_Rela * relend;
+ struct elf_link_hash_table * htab = elf_hash_table (info);
symtab_hdr = &((elf_tdata (input_bfd))->symtab_hdr);
sym_hashes = elf_sym_hashes (input_bfd);
- rel = relocs;
+ rel = wrel = relocs;
relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
+ for (; rel < relend; wrel++, rel++)
{
- enum elf_arc_reloc_type r_type;
+ enum elf_arc_reloc_type r_type;
reloc_howto_type * howto;
- unsigned long r_symndx;
+ unsigned long r_symndx;
struct elf_link_hash_entry * h;
Elf_Internal_Sym * sym;
asection * sec;
- struct elf_link_hash_entry *h2;
+ struct elf_link_hash_entry * h2;
+ const char * msg;
+ bfd_boolean unresolved_reloc = FALSE;
struct arc_relocation_data reloc_data =
{
.reloc_offset = 0,
.reloc_addend = 0,
.got_offset_value = 0,
- .sym_value = 0,
+ .sym_value = 0,
.sym_section = NULL,
.howto = NULL,
.input_section = NULL,
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
- howto = &elf_arc_howto_table[r_type];
+ howto = arc_elf_howto (r_type);
r_symndx = ELF32_R_SYM (rel->r_info);
{
sec = local_sections[r_symndx];
- /* for RELA relocs.Just adjust the addend
+ /* For RELA relocs. Just adjust the addend
value in the relocation entry. */
rel->r_addend += sec->output_offset + sym->st_value;
- BFD_DEBUG_PIC (
- PR_DEBUG ("local symbols reloc "
- "(section=%d %s) seen in %s\n",
- r_symndx,
- local_sections[r_symndx]->name,
- __PRETTY_FUNCTION__)
- );
+ ARC_DEBUG ("local symbols reloc (section=%d %s) seen in %s\n",
+ (int) r_symndx, local_sections[r_symndx]->name,
+ __PRETTY_FUNCTION__);
}
}
-
- continue;
}
h2 = elf_link_hash_lookup (elf_hash_table (info), "__SDATA_BEGIN__",
FALSE, FALSE, TRUE);
- if (reloc_data.sdata_begin_symbol_vma_set == FALSE
- && h2 != NULL && h2->root.type != bfd_link_hash_undefined
- && h2->root.u.def.section->output_section != NULL)
+ if (!reloc_data.sdata_begin_symbol_vma_set
+ && h2 != NULL && h2->root.type != bfd_link_hash_undefined
+ && h2->root.u.def.section->output_section != NULL)
/* TODO: Verify this condition. */
{
reloc_data.sdata_begin_symbol_vma =
- (h2->root.u.def.value +
- h2->root.u.def.section->output_section->vma);
+ (h2->root.u.def.value
+ + h2->root.u.def.section->output_section->vma);
reloc_data.sdata_begin_symbol_vma_set = TRUE;
}
if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */
{
- local_got_ents = arc_get_local_got_ents (output_bfd);
- struct got_entry *entry = local_got_ents[r_symndx];
-
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
+ }
+ else
+ {
+ bfd_boolean warned, ignored;
+ bfd_vma relocation ATTRIBUTE_UNUSED;
- reloc_data.sym_value = sym->st_value;
- reloc_data.sym_section = sec;
+ RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+ r_symndx, symtab_hdr, sym_hashes,
+ h, sec, relocation,
+ unresolved_reloc, warned, ignored);
+
+ /* TODO: This code is repeated from below. We should
+ clean it and remove duplications.
+ Sec is used check for discarded sections.
+ Need to redesign code below. */
- if ((is_reloc_for_GOT (howto)
- || is_reloc_for_TLS (howto)) && entry != NULL)
+ /* Get the symbol's entry in the symtab. */
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ /* If we have encountered a definition for this symbol. */
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
{
- if (is_reloc_for_TLS (howto))
- while (entry->type == GOT_NORMAL && entry->next != NULL)
- entry = entry->next;
+ reloc_data.sym_value = h->root.u.def.value;
+ sec = h->root.u.def.section;
+ }
+ }
- if (is_reloc_for_GOT (howto))
- while (entry->type != GOT_NORMAL && entry->next != NULL)
- entry = entry->next;
+ /* Clean relocs for symbols in discarded sections. */
+ if (sec != NULL && discarded_section (sec))
+ {
+ _bfd_clear_contents (howto, input_bfd, input_section,
+ contents, rel->r_offset);
+ rel->r_info = 0;
+ rel->r_addend = 0;
+
+ /* For ld -r, remove relocations in debug sections against
+ sections defined in discarded sections. Not done for
+ eh_frame editing code expects to be present. */
+ if (bfd_link_relocatable (info)
+ && (input_section->flags & SEC_DEBUGGING))
+ wrel--;
- if (entry->type == GOT_TLS_GD && entry->processed == FALSE)
- {
- bfd_vma sym_vma = sym->st_value
- + sec->output_section->vma
- + sec->output_offset;
-
- /* Create dynamic relocation for local sym. */
- ADD_RELA (output_bfd, got, entry->offset, 0,
- R_ARC_TLS_DTPMOD, 0);
- ADD_RELA (output_bfd, got, entry->offset+4, 0,
- R_ARC_TLS_DTPOFF, 0);
-
- bfd_vma sec_vma = sec->output_section->vma
- + sec->output_offset;
- bfd_put_32 (output_bfd, sym_vma - sec_vma,
- htab->sgot->contents + entry->offset + 4);
-
- ARC_DEBUG ("arc_info: FIXED -> GOT_TLS_GD value "
- "= 0x%x @ 0x%x, for symbol %s\n",
- sym_vma - sec_vma,
- htab->sgot->contents + entry->offset + 4,
- "(local)");
-
- entry->processed = TRUE;
- }
- if (entry->type == GOT_TLS_IE && entry->processed == FALSE)
- {
- bfd_vma sym_vma = sym->st_value
- + sec->output_section->vma
- + sec->output_offset;
- bfd_vma sec_vma = htab->tls_sec->output_section->vma;
- bfd_put_32 (output_bfd, sym_vma - sec_vma,
- htab->sgot->contents + entry->offset);
- /* TODO: Check if this type of relocs is the cause
- for all the ARC_NONE dynamic relocs. */
-
- ARC_DEBUG ("arc_info: FIXED -> GOT_TLS_IE value = "
- "0x%x @ 0x%x, for symbol %s\n",
- sym_vma - sec_vma,
- htab->sgot->contents + entry->offset,
- "(local)");
-
- entry->processed = TRUE;
- }
- if (entry->type == GOT_NORMAL && entry->processed == FALSE)
- {
- bfd_vma sec_vma = reloc_data.sym_section->output_section->vma
- + reloc_data.sym_section->output_offset;
-
- bfd_put_32 (output_bfd, reloc_data.sym_value + sec_vma,
- htab->sgot->contents + entry->offset);
-
- ARC_DEBUG ("arc_info: PATCHED: 0x%08x @ 0x%08x for "
- "sym %s in got offset 0x%x\n",
- reloc_data.sym_value + sec_vma,
- htab->sgot->output_section->vma
- + htab->sgot->output_offset + entry->offset,
- "(local)",
- entry->offset);
- entry->processed = TRUE;
- }
+ continue;
+ }
- reloc_data.got_offset_value = entry->offset;
- ARC_DEBUG ("arc_info: GOT_ENTRY = %d, offset = 0x%x, "
- "vma = 0x%x for symbol %s\n",
- entry->type, entry->offset,
- htab->sgot->output_section->vma
- + htab->sgot->output_offset + entry->offset,
- "(local)");
+ if (bfd_link_relocatable (info))
+ {
+ if (wrel != rel)
+ *wrel = *rel;
+ continue;
+ }
+
+ if (r_symndx < symtab_hdr->sh_info) /* A local symbol. */
+ {
+ reloc_data.sym_value = sym->st_value;
+ reloc_data.sym_section = sec;
+ reloc_data.symbol_name =
+ bfd_elf_string_from_elf_section (input_bfd,
+ symtab_hdr->sh_link,
+ sym->st_name);
+
+ /* Mergeable section handling. */
+ if ((sec->flags & SEC_MERGE)
+ && ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ {
+ asection *msec;
+ msec = sec;
+ rel->r_addend = _bfd_elf_rel_local_sym (output_bfd, sym,
+ &msec, rel->r_addend);
+ rel->r_addend -= (sec->output_section->vma
+ + sec->output_offset
+ + sym->st_value);
+ rel->r_addend += msec->output_section->vma + msec->output_offset;
+
+ reloc_data.reloc_addend = rel->r_addend;
}
BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto));
}
else /* Global symbol. */
{
+ /* FIXME: We should use the RELOC_FOR_GLOBAL_SYMBOL macro
+ (defined in elf-bfd.h) here. */
+
/* Get the symbol's entry in the symtab. */
h = sym_hashes[r_symndx - symtab_hdr->sh_info];
while (h->root.type == bfd_link_hash_indirect
|| h->root.type == bfd_link_hash_warning)
+ {
+ struct elf_arc_link_hash_entry *ah_old =
+ (struct elf_arc_link_hash_entry *) h;
h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ struct elf_arc_link_hash_entry *ah =
+ (struct elf_arc_link_hash_entry *) h;
+
+ if (ah->got_ents == 0 && ah_old->got_ents != ah->got_ents)
+ ah->got_ents = ah_old->got_ents;
+ }
+
+ /* TODO: Need to validate what was the intention. */
+ /* BFD_ASSERT ((h->dynindx == -1) || (h->forced_local != 0)); */
+ reloc_data.symbol_name = h->root.root.string;
- BFD_ASSERT ((h->dynindx == -1) >= (h->forced_local != 0));
/* If we have encountered a definition for this symbol. */
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
if (is_reloc_for_GOT (howto) && !bfd_link_pic (info))
{
+ struct elf_arc_link_hash_entry *ah =
+ (struct elf_arc_link_hash_entry *) h;
/* TODO: Change it to use arc_do_relocation with
ARC_32 reloc. Try to use ADD_RELA macro. */
bfd_vma relocation =
+ reloc_data.sym_section->output_section->vma)
: 0);
- BFD_ASSERT (h->got.glist);
- bfd_vma got_offset = h->got.glist->offset;
+ BFD_ASSERT (ah->got_ents);
+ bfd_vma got_offset = ah->got_ents->offset;
bfd_put_32 (output_bfd, relocation,
htab->sgot->contents + got_offset);
}
{
/* Fail if it is linking for PIE and the symbol is
undefined. */
- if (bfd_link_executable (info)
- && !(*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd, input_section,
- rel->r_offset, TRUE))
- {
- return FALSE;
- }
+ if (bfd_link_executable (info))
+ (*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd, input_section,
+ rel->r_offset, TRUE);
reloc_data.sym_value = h->plt.offset;
reloc_data.sym_section = htab->splt;
reloc_data.should_relocate = TRUE;
}
- else if (!bfd_link_pic (info)
- && !(*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd, input_section,
- rel->r_offset, TRUE))
- {
- return FALSE;
- }
- }
-
- if (h->got.glist != NULL)
- {
- struct got_entry *entry = h->got.glist;
-
- if (is_reloc_for_GOT (howto) || is_reloc_for_TLS (howto))
- {
- if (! elf_hash_table (info)->dynamic_sections_created
- || (bfd_link_pic (info)
- && SYMBOL_REFERENCES_LOCAL (info, h)))
- {
- reloc_data.sym_value = h->root.u.def.value;
- reloc_data.sym_section = h->root.u.def.section;
-
- if (is_reloc_for_TLS (howto))
- while (entry->type == GOT_NORMAL && entry->next != NULL)
- entry = entry->next;
-
- if (entry->processed == FALSE
- && (entry->type == GOT_TLS_GD
- || entry->type == GOT_TLS_IE))
- {
- bfd_vma sym_value = h->root.u.def.value
- + h->root.u.def.section->output_section->vma
- + h->root.u.def.section->output_offset;
-
- bfd_vma sec_vma =
- elf_hash_table (info)->tls_sec->output_section->vma;
-
- bfd_put_32 (output_bfd,
- sym_value - sec_vma,
- htab->sgot->contents + entry->offset
- + (entry->existing_entries == MOD_AND_OFF ? 4 : 0));
-
- ARC_DEBUG ("arc_info: FIXED -> %s value = 0x%x "
- "@ 0x%x, for symbol %s\n",
- (entry->type == GOT_TLS_GD ? "GOT_TLS_GD" :
- "GOT_TLS_IE"),
- sym_value - sec_vma,
- htab->sgot->contents + entry->offset
- + (entry->existing_entries == MOD_AND_OFF ? 4 : 0),
- h->root.root.string);
-
- entry->processed = TRUE;
- }
-
- if (entry->type == GOT_TLS_IE && entry->processed == FALSE)
- {
- bfd_vma sec_vma = htab->tls_sec->output_section->vma;
- bfd_put_32 (output_bfd,
- reloc_data.sym_value - sec_vma,
- htab->sgot->contents + entry->offset);
- }
-
- if (entry->type == GOT_NORMAL && entry->processed == FALSE)
- {
- bfd_vma sec_vma =
- reloc_data.sym_section->output_section->vma
- + reloc_data.sym_section->output_offset;
-
- if (h->root.type != bfd_link_hash_undefweak)
- {
- bfd_put_32 (output_bfd,
- reloc_data.sym_value + sec_vma,
- htab->sgot->contents + entry->offset);
-
- ARC_DEBUG ("arc_info: PATCHED: 0x%08x "
- "@ 0x%08x for sym %s in got offset 0x%x\n",
- reloc_data.sym_value + sec_vma,
- htab->sgot->output_section->vma
- + htab->sgot->output_offset + entry->offset,
- h->root.root.string,
- entry->offset);
- }
- else
- {
- ARC_DEBUG ("arc_info: PATCHED: NOT_PATCHED "
- "@ 0x%08x for sym %s in got offset 0x%x "
- "(is undefweak)\n",
- htab->sgot->output_section->vma
- + htab->sgot->output_offset + entry->offset,
- h->root.root.string,
- entry->offset);
- }
-
- entry->processed = TRUE;
- }
- }
- }
-
- reloc_data.got_offset_value = entry->offset;
-
- ARC_DEBUG ("arc_info: GOT_ENTRY = %d, offset = 0x%x, "
- "vma = 0x%x for symbol %s\n",
- entry->type, entry->offset,
- htab->sgot->output_section->vma
- + htab->sgot->output_offset + entry->offset,
- h->root.root.string);
+ else if (!bfd_link_pic (info) || bfd_link_executable (info))
+ (*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd, input_section,
+ rel->r_offset, TRUE);
}
BFD_ASSERT (htab->sgot != NULL || !is_reloc_for_GOT (howto));
+ htab->sgot->output_offset;
}
+ if ((is_reloc_for_GOT (howto)
+ || is_reloc_for_TLS (howto)))
+ {
+ reloc_data.should_relocate = TRUE;
+
+ struct got_entry **list
+ = get_got_entry_list_for_symbol (input_bfd, r_symndx, h);
+
+ reloc_data.got_offset_value
+ = relocate_fix_got_relocs_for_got_info (list,
+ tls_type_for_reloc (howto),
+ info,
+ output_bfd,
+ r_symndx,
+ local_syms,
+ local_sections,
+ h,
+ &reloc_data);
+
+ if (h == NULL)
+ {
+ create_got_dynrelocs_for_single_entry (
+ got_entry_for_type (list,
+ arc_got_entry_type_for_reloc (howto)),
+ output_bfd, info, NULL);
+ }
+ }
+
+
+#define IS_ARC_PCREL_TYPE(TYPE) \
+ ( (TYPE == R_ARC_PC32) \
+ || (TYPE == R_ARC_32_PCREL))
+
switch (r_type)
{
case R_ARC_32:
case R_ARC_32_ME:
case R_ARC_PC32:
case R_ARC_32_PCREL:
- if (bfd_link_pic (info) && !bfd_link_pie (info)
- && ((r_type != R_ARC_PC32 && r_type != R_ARC_32_PCREL)
+ if (bfd_link_pic (info)
+ && (!IS_ARC_PCREL_TYPE (r_type)
|| (h != NULL
&& h->dynindx != -1
+ && !h->def_regular
&& (!info->symbolic || !h->def_regular))))
{
Elf_Internal_Rela outrel;
info,
input_section,
rel->r_offset);
+
if (outrel.r_offset == (bfd_vma) -1)
skip = TRUE;
memset (&outrel, 0, sizeof outrel);
relocate = FALSE;
}
- else if (r_type == R_ARC_PC32
- || r_type == R_ARC_32_PCREL)
+ else if (h != NULL
+ && h->dynindx != -1
+ && (IS_ARC_PCREL_TYPE (r_type)
+ || !(bfd_link_executable (info)
+ || SYMBOLIC_BIND (info, h))
+ || ! h->def_regular))
{
- BFD_ASSERT (h != NULL && h->dynindx != -1);
+ BFD_ASSERT (h != NULL);
if ((input_section->flags & SEC_ALLOC) != 0)
relocate = FALSE;
else
relocate = TRUE;
+
+ BFD_ASSERT (h->dynindx != -1);
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
}
else
dynamic symbol table, and it's a regular symbol
not defined in a shared object, then treat the
symbol as local, resolve it now. */
- if (h == NULL
- || ((info->symbolic || h->dynindx == -1)
- && h->def_regular)
- || h->forced_local)
- {
- relocate = TRUE;
- /* outrel.r_addend = 0; */
- outrel.r_info = ELF32_R_INFO (0, R_ARC_RELATIVE);
- }
- else
- {
- BFD_ASSERT (h->dynindx != -1);
-
- /* This type of dynamic relocation cannot be created
- for code sections. */
- BFD_ASSERT ((input_section->flags & SEC_CODE) == 0);
-
- if ((input_section->flags & SEC_ALLOC) != 0)
- relocate = FALSE;
- else
- relocate = TRUE;
- outrel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_32);
- }
+ relocate = TRUE;
+ /* outrel.r_addend = 0; */
+ outrel.r_info = ELF32_R_INFO (0, R_ARC_RELATIVE);
}
BFD_ASSERT (sreloc->contents != 0);
bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
- if (relocate == FALSE)
+ if (!relocate)
continue;
}
break;
}
if (is_reloc_SDA_relative (howto)
- && (reloc_data.sdata_begin_symbol_vma_set == FALSE))
+ && !reloc_data.sdata_begin_symbol_vma_set)
{
- (*_bfd_error_handler)
- ("Error: Linker symbol __SDATA_BEGIN__ not found");
+ _bfd_error_handler
+ ("error: linker symbol __SDATA_BEGIN__ not found");
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
DEBUG_ARC_RELOC (reloc_data);
- if (arc_do_relocation (contents, reloc_data, info) != bfd_reloc_ok)
- return FALSE;
- }
-
- return TRUE;
-}
-
-static struct dynamic_sections
-arc_create_dynamic_sections (bfd * abfd, struct bfd_link_info *info)
-{
- struct elf_link_hash_table *htab;
- bfd *dynobj;
- struct dynamic_sections ds =
- {
- .initialized = FALSE,
- .sgot = NULL,
- .srelgot = NULL,
- .sgotplt = NULL,
- .srelgotplt = NULL,
- .sdyn = NULL,
- .splt = NULL,
- .srelplt = NULL
- };
-
- htab = elf_hash_table (info);
- BFD_ASSERT (htab);
-
- /* Create dynamic sections for relocatable executables so that we
- can copy relocations. */
- if (! htab->dynamic_sections_created && bfd_link_pic (info))
- {
- if (! _bfd_elf_link_create_dynamic_sections (abfd, info))
- BFD_ASSERT (0);
- }
-
- dynobj = (elf_hash_table (info))->dynobj;
-
- if (dynobj)
- {
- ds.sgot = htab->sgot;
- ds.srelgot = htab->srelgot;
-
- ds.sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
- ds.srelgotplt = ds.srelplt;
+ /* Make sure we have with a dynamic linker. In case of GOT and PLT
+ the sym_section should point to .got or .plt respectively. */
+ if ((is_reloc_for_GOT (howto) || is_reloc_for_PLT (howto))
+ && reloc_data.sym_section == NULL)
+ {
+ _bfd_error_handler
+ (_("GOT and PLT relocations cannot be fixed with a non dynamic linker"));
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
- ds.splt = bfd_get_section_by_name (dynobj, ".plt");
- ds.srelplt = bfd_get_section_by_name (dynobj, ".rela.plt");
- }
+ msg = NULL;
+ switch (arc_do_relocation (contents, reloc_data, info))
+ {
+ case bfd_reloc_ok:
+ continue; /* The reloc processing loop. */
+
+ case bfd_reloc_overflow:
+ (*info->callbacks->reloc_overflow)
+ (info, (h ? &h->root : NULL), reloc_data.symbol_name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset);
+ break;
+
+ case bfd_reloc_undefined:
+ (*info->callbacks->undefined_symbol)
+ (info, reloc_data.symbol_name, input_bfd, input_section, rel->r_offset, TRUE);
+ break;
+
+ case bfd_reloc_other:
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): warning: unaligned access to symbol '%s' in the small data area");
+ break;
+
+ case bfd_reloc_outofrange:
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): internal error: out of range error");
+ break;
+
+ case bfd_reloc_notsupported:
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): internal error: unsupported relocation error");
+ break;
+
+ case bfd_reloc_dangerous:
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): internal error: dangerous relocation");
+ break;
+
+ default:
+ /* xgettext:c-format */
+ msg = _("%pB(%pA): internal error: unknown error");
+ break;
+ }
- if (htab->dynamic_sections_created)
- {
- ds.sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+ if (msg)
+ _bfd_error_handler (msg, input_bfd, input_section, reloc_data.symbol_name);
+ return FALSE;
}
- ds.initialized = TRUE;
-
- return ds;
+ return TRUE;
}
-#define ADD_SYMBOL_REF_SEC_AND_RELOC(SECNAME, COND_FOR_RELOC, H) \
- htab->s##SECNAME->size; \
- { \
- if (COND_FOR_RELOC) \
- { \
- htab->srel##SECNAME->size += sizeof (Elf32_External_Rela); \
- ARC_DEBUG ("arc_info: Added reloc space in " \
- #SECNAME " section at " __FILE__ \
- ":%d for symbol\n", \
- __LINE__, name_for_global_symbol (H)); \
- } \
- if (H) \
- if (h->dynindx == -1 && !h->forced_local) \
- if (! bfd_elf_link_record_dynamic_symbol (info, H)) \
- return FALSE; \
- htab->s##SECNAME->size += 4; \
- }
+#define elf_arc_hash_table(p) \
+ (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
+ == ARC_ELF_DATA ? ((struct elf_arc_link_hash_table *) ((p)->hash)) : NULL)
static bfd_boolean
-elf_arc_check_relocs (bfd * abfd,
+elf_arc_check_relocs (bfd * abfd,
struct bfd_link_info * info,
asection * sec,
const Elf_Internal_Rela * relocs)
{
Elf_Internal_Shdr * symtab_hdr;
struct elf_link_hash_entry ** sym_hashes;
- struct got_entry ** local_got_ents;
const Elf_Internal_Rela * rel;
const Elf_Internal_Rela * rel_end;
bfd * dynobj;
asection * sreloc = NULL;
- struct elf_link_hash_table * htab = elf_hash_table (info);
+ struct elf_link_hash_table * htab = elf_hash_table (info);
if (bfd_link_relocatable (info))
return TRUE;
+ if (htab->dynobj == NULL)
+ htab->dynobj = abfd;
+
dynobj = (elf_hash_table (info))->dynobj;
symtab_hdr = &((elf_tdata (abfd))->symtab_hdr);
sym_hashes = elf_sym_hashes (abfd);
- local_got_ents = arc_get_local_got_ents (abfd);
rel_end = relocs + sec->reloc_count;
for (rel = relocs; rel < rel_end; rel++)
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
- howto = &elf_arc_howto_table[r_type];
-
- if (dynobj == NULL
- && (is_reloc_for_GOT (howto) == TRUE
- || is_reloc_for_TLS (howto) == TRUE))
- {
- dynobj = elf_hash_table (info)->dynobj = abfd;
- if (! _bfd_elf_create_got_section (abfd, info))
- return FALSE;
- }
+ howto = arc_elf_howto (r_type);
/* Load symbol information. */
r_symndx = ELF32_R_SYM (rel->r_info);
if (r_symndx < symtab_hdr->sh_info) /* Is a local symbol. */
h = NULL;
else /* Global one. */
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+ }
+
switch (r_type)
{
- case R_ARC_32:
- case R_ARC_32_ME:
- /* During shared library creation, these relocs should not
- appear in a shared library (as memory will be read only
- and the dynamic linker can not resolve these. However
- the error should not occur for e.g. debugging or
- non-readonly sections. */
- if (bfd_link_dll (info) && !bfd_link_pie (info)
- && (sec->flags & SEC_ALLOC) != 0
- && (sec->flags & SEC_READONLY) != 0)
- {
- const char *name;
- if (h)
- name = h->root.root.string;
- else
- /* bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); */
- name = "UNKNOWN";
- (*_bfd_error_handler)
- (_("\
-%B: relocation %s against `%s' can not be used when making a shared object; recompile with -fPIC"),
- abfd,
- arc_elf_howto (r_type)->name,
- name);
- bfd_set_error (bfd_error_bad_value);
- return FALSE;
- }
+ case R_ARC_32:
+ case R_ARC_32_ME:
+ /* During shared library creation, these relocs should not
+ appear in a shared library (as memory will be read only
+ and the dynamic linker can not resolve these. However
+ the error should not occur for e.g. debugging or
+ non-readonly sections. */
+ if (h != NULL
+ && (bfd_link_dll (info) && !bfd_link_pie (info))
+ && (sec->flags & SEC_ALLOC) != 0
+ && (sec->flags & SEC_READONLY) != 0
+ && ((sec->flags & SEC_CODE) != 0
+ || (sec->flags & SEC_DEBUGGING) != 0))
+ {
+ const char *name;
+ if (h)
+ name = h->root.root.string;
+ else
+ name = "UNKNOWN";
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: relocation %s against `%s' can not be used"
+ " when making a shared object; recompile with -fPIC"),
+ abfd,
+ arc_elf_howto (r_type)->name,
+ name);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
/* In some cases we are not setting the 'non_got_ref'
flag, even though the relocations don't require a GOT
/* FALLTHROUGH */
case R_ARC_PC32:
case R_ARC_32_PCREL:
- if (bfd_link_pic (info) && !bfd_link_pie (info)
+ if ((bfd_link_pic (info))
&& ((r_type != R_ARC_PC32 && r_type != R_ARC_32_PCREL)
|| (h != NULL
- && h->dynindx != -1
&& (!info->symbolic || !h->def_regular))))
{
if (sreloc == NULL)
{
+ if (info->dynamic
+ && ! htab->dynamic_sections_created
+ && ! _bfd_elf_link_create_dynamic_sections (abfd, info))
+ return FALSE;
sreloc = _bfd_elf_make_dynamic_reloc_section (sec, dynobj,
2, abfd,
/*rela*/
break;
}
- if (is_reloc_for_PLT (howto) == TRUE)
+ if (is_reloc_for_PLT (howto))
{
if (h == NULL)
continue;
else
- h->needs_plt = 1;
- }
-
- if (is_reloc_for_GOT (howto) == TRUE)
- {
- if (h == NULL)
- {
- /* Local symbol. */
- if (local_got_ents[r_symndx] == NULL)
- {
- bfd_vma offset =
- ADD_SYMBOL_REF_SEC_AND_RELOC (got,
- bfd_link_pic (info),
- NULL);
- new_got_entry_to_list (&(local_got_ents[r_symndx]),
- GOT_NORMAL, offset, NONE);
- }
- }
- else
- {
- /* Global symbol. */
- h = sym_hashes[r_symndx - symtab_hdr->sh_info];
- if (h->got.glist == NULL)
- {
- bfd_vma offset =
- ADD_SYMBOL_REF_SEC_AND_RELOC (got, TRUE, h);
- new_got_entry_to_list (&h->got.glist,
- GOT_NORMAL, offset, NONE);
- }
- }
+ if (h->forced_local == 0)
+ h->needs_plt = 1;
}
- if (is_reloc_for_TLS (howto) == TRUE)
+ /* Add info to the symbol got_entry_list. */
+ if (is_reloc_for_GOT (howto)
+ || is_reloc_for_TLS (howto))
{
- enum tls_type_e type = GOT_UNKNOWN;
-
- switch (r_type)
+ if (bfd_link_dll (info) && !bfd_link_pie (info)
+ && (r_type == R_ARC_TLS_LE_32 || r_type == R_ARC_TLS_LE_S9))
{
- case R_ARC_TLS_GD_GOT:
- type = GOT_TLS_GD;
- break;
- case R_ARC_TLS_IE_GOT:
- type = GOT_TLS_IE;
- break;
- default:
- break;
+ const char *name;
+ if (h)
+ name = h->root.root.string;
+ else
+ /* bfd_elf_sym_name (abfd, symtab_hdr, isym, NULL); */
+ name = "UNKNOWN";
+ _bfd_error_handler
+ /* xgettext:c-format */
+ (_("%pB: relocation %s against `%s' can not be used"
+ " when making a shared object; recompile with -fPIC"),
+ abfd,
+ arc_elf_howto (r_type)->name,
+ name);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
}
+ if (! _bfd_elf_create_got_section (dynobj, info))
+ return FALSE;
- struct got_entry **list = NULL;
- if (h != NULL)
- list = &(h->got.glist);
- else
- list = &(local_got_ents[r_symndx]);
-
- if (type != GOT_UNKNOWN && !symbol_has_entry_of_type (*list, type))
- {
- enum tls_got_entries entries = NONE;
- bfd_vma offset =
- ADD_SYMBOL_REF_SEC_AND_RELOC (got, TRUE, h);
-
- if (type == GOT_TLS_GD)
- {
- bfd_vma ATTRIBUTE_UNUSED notneeded =
- ADD_SYMBOL_REF_SEC_AND_RELOC (got, TRUE, h);
- entries = MOD_AND_OFF;
- }
-
- if (entries == NONE)
- entries = OFF;
-
- new_got_entry_to_list (list, type, offset, entries);
- }
+ arc_fill_got_info_for_reloc (
+ arc_got_entry_type_for_reloc (howto),
+ get_got_entry_list_for_symbol (abfd, r_symndx, h),
+ info,
+ h);
}
}
for (i = 0; i < 1; i++)
{
ARC_DEBUG ("%d: size1 = %d, size2 = %d\n", i,
- plt_versions[i].entry_size,
- plt_versions[i].elem_size);
+ (int) plt_versions[i].entry_size,
+ (int) plt_versions[i].elem_size);
}
if (bfd_get_mach (info->output_bfd) == bfd_mach_arc_arcv2)
ret = htab->splt->size;
htab->splt->size += plt_data->elem_size;
- ARC_DEBUG ("PLT_SIZE = %d\n", htab->splt->size);
+ ARC_DEBUG ("PLT_SIZE = %d\n", (int) htab->splt->size);
htab->sgotplt->size += 4;
htab->srelplt->size += sizeof (Elf32_External_Rela);
switch (SYM_ONLY (reloc->symbol))
{
case SGOT:
- relocation =
- htab->sgotplt->output_section->vma +
- htab->sgotplt->output_offset + symbol_got_offset;
+ relocation
+ = htab->sgotplt->output_section->vma
+ + htab->sgotplt->output_offset + symbol_got_offset;
break;
}
relocation += reloc->addend;
/* TODO: being ME is not a property of the relocation but of the
section of which is applying the relocation. */
- if (IS_MIDDLE_ENDIAN (reloc->symbol) || bfd_big_endian (abfd))
+ if (IS_MIDDLE_ENDIAN (reloc->symbol) && !bfd_big_endian (abfd))
{
- relocation =
- ((relocation & 0xffff0000) >> 16) |
- ((relocation & 0xffff) << 16);
+ relocation
+ = ((relocation & 0xffff0000) >> 16)
+ | ((relocation & 0xffff) << 16);
}
switch (reloc->size)
/ plt_data->elem_size;
bfd_vma got_offset = (plt_index + 3) * 4;
- ARC_DEBUG ("arc_info: PLT_OFFSET = 0x%x, PLT_ENTRY_VMA = 0x%x, \
-GOT_ENTRY_OFFSET = 0x%x, GOT_ENTRY_VMA = 0x%x, for symbol %s\n",
- h->plt.offset,
- htab->splt->output_section->vma
- + htab->splt->output_offset
- + h->plt.offset,
- got_offset,
- htab->sgotplt->output_section->vma
- + htab->sgotplt->output_offset
- + got_offset,
+ ARC_DEBUG ("arc_info: PLT_OFFSET = %#lx, PLT_ENTRY_VMA = %#lx, \
+GOT_ENTRY_OFFSET = %#lx, GOT_ENTRY_VMA = %#lx, for symbol %s\n",
+ (long) h->plt.offset,
+ (long) (htab->splt->output_section->vma
+ + htab->splt->output_offset
+ + h->plt.offset),
+ (long) got_offset,
+ (long) (htab->sgotplt->output_section->vma
+ + htab->sgotplt->output_offset
+ + got_offset),
h->root.root.string);
- memcpy (htab->splt->contents + h->plt.offset,
- plt_data->elem,
- plt_data->elem_size);
+ {
+ bfd_vma i = 0;
+ uint16_t *ptr = (uint16_t *) plt_data->elem;
+
+ for (i = 0; i < plt_data->elem_size/2; i++)
+ {
+ uint16_t data = ptr[i];
+ bfd_put_16 (output_bfd,
+ (bfd_vma) data,
+ htab->splt->contents + h->plt.offset + (i*2));
+ }
+ }
+
plt_do_relocs_for_symbol (output_bfd, htab,
plt_data->elem_relocs,
h->plt.offset,
+ htab->sgotplt->output_offset
+ got_offset);
rel.r_addend = 0;
+
+ BFD_ASSERT (h->dynindx != -1);
rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_JMP_SLOT);
loc = htab->srelplt->contents;
struct plt_version_t *plt_data = arc_get_plt_version (info);
struct elf_link_hash_table *htab = elf_hash_table (info);
- memcpy (htab->splt->contents, plt_data->entry,
- plt_data->entry_size);
+ {
+ bfd_vma i = 0;
+ uint16_t *ptr = (uint16_t *) plt_data->entry;
+ for (i = 0; i < plt_data->entry_size/2; i++)
+ {
+ uint16_t data = ptr[i];
+ bfd_put_16 (abfd,
+ (bfd_vma) data,
+ htab->splt->contents + (i*2));
+ }
+ }
PLT_DO_RELOCS_FOR_ENTRY (abfd, htab, plt_data->entry_relocs);
}
struct elf_link_hash_entry *h)
{
asection *s;
- unsigned int power_of_two;
bfd *dynobj = (elf_hash_table (info))->dynobj;
struct elf_link_hash_table *htab = elf_hash_table (info);
{
bfd_vma loc = add_symbol_to_plt (info);
- if (!bfd_link_pic (info) && !h->def_regular)
+ if (bfd_link_executable (info) && !h->def_regular)
{
h->root.u.def.section = htab->splt;
h->root.u.def.value = loc;
/* If this is a weak symbol, and there is a real definition, the
processor independent code will have arranged for us to see the
real definition first, and we can just use the same value. */
- if (h->u.weakdef != NULL)
+ if (h->is_weakalias)
{
- BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
- || h->u.weakdef->root.type == bfd_link_hash_defweak);
- h->root.u.def.section = h->u.weakdef->root.u.def.section;
- h->root.u.def.value = h->u.weakdef->root.u.def.value;
+ struct elf_link_hash_entry *def = weakdef (h);
+ BFD_ASSERT (def->root.type == bfd_link_hash_defined);
+ h->root.u.def.section = def->root.u.def.section;
+ h->root.u.def.value = def->root.u.def.value;
return TRUE;
}
- /* If there are no non-GOT references, we do not need a copy
- relocation. */
- if (!h->non_got_ref)
- return TRUE;
-
/* This is a reference to a symbol defined by a dynamic object which
is not a function. */
only references to the symbol are via the global offset table.
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
- if (bfd_link_pic (info))
+ if (!bfd_link_executable (info))
+ return TRUE;
+
+ /* If there are no non-GOT references, we do not need a copy
+ relocation. */
+ if (!h->non_got_ref)
return TRUE;
+ /* If -z nocopyreloc was given, we won't generate them either. */
+ if (info->nocopyreloc)
+ {
+ h->non_got_ref = 0;
+ return TRUE;
+ }
+
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
an entry for this symbol in the .dynsym section. The dynamic
both the dynamic object and the regular object will refer to the
same memory location for the variable. */
- s = bfd_get_section_by_name (dynobj, ".dynbss");
- BFD_ASSERT (s != NULL);
+ if (htab == NULL)
+ return FALSE;
/* We must generate a R_ARC_COPY reloc to tell the dynamic linker to
copy the initial value out of the dynamic object and into the
.rela.bss section we are going to use. */
if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
{
- asection *srel;
+ struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info);
- srel = bfd_get_section_by_name (dynobj, ".rela.bss");
- BFD_ASSERT (srel != NULL);
- srel->size += sizeof (Elf32_External_Rela);
+ BFD_ASSERT (arc_htab->elf.srelbss != NULL);
+ arc_htab->elf.srelbss->size += sizeof (Elf32_External_Rela);
h->needs_copy = 1;
}
- /* We need to figure out the alignment required for this symbol. I
- have no idea how ELF linkers handle this. */
- power_of_two = bfd_log2 (h->size);
- if (power_of_two > 3)
- power_of_two = 3;
-
- /* Apply the required alignment. */
- s->size = BFD_ALIGN (s->size, (bfd_size_type) (1 << power_of_two));
- if (power_of_two > bfd_get_section_alignment (dynobj, s))
- {
- if (! bfd_set_section_alignment (dynobj, s, power_of_two))
- return FALSE;
- }
-
- /* Define the symbol as being at this point in the section. */
- h->root.u.def.section = s;
- h->root.u.def.value = s->size;
-
- /* Increment the section size to make room for the symbol. */
- s->size += h->size;
+ /* TODO: Move this also to arc_hash_table. */
+ s = bfd_get_section_by_name (dynobj, ".dynbss");
+ BFD_ASSERT (s != NULL);
- return TRUE;
+ return _bfd_elf_adjust_dynamic_copy (info, h, s);
}
/* Function : elf_arc_finish_dynamic_symbol
}
}
- if (h->got.glist != NULL)
- {
- struct got_entry *list = h->got.glist;
-
- /* Traverse the list of got entries for this symbol. */
- while (list)
- {
- bfd_vma got_offset = h->got.glist->offset;
-
- if (list->type == GOT_NORMAL
- && list->created_dyn_relocation == FALSE)
- {
- if (bfd_link_pic (info)
- && (info->symbolic || h->dynindx == -1)
- && h->def_regular)
- {
- ADD_RELA (output_bfd, got, got_offset, 0, R_ARC_RELATIVE, 0);
- }
- else
- {
- ADD_RELA (output_bfd, got, got_offset, h->dynindx,
- R_ARC_GLOB_DAT, 0);
- }
- list->created_dyn_relocation = TRUE;
- }
- else if (list->existing_entries != NONE)
- {
- struct elf_link_hash_table *htab = elf_hash_table (info);
- enum tls_got_entries e = list->existing_entries;
- BFD_ASSERT (list->type != GOT_TLS_GD
- || list->existing_entries == MOD_AND_OFF);
+ /* This function traverses list of GOT entries and
+ create respective dynamic relocs. */
+ /* TODO: Make function to get list and not access the list directly. */
+ /* TODO: Move function to relocate_section create this relocs eagerly. */
+ struct elf_arc_link_hash_entry *ah =
+ (struct elf_arc_link_hash_entry *) h;
+ create_got_dynrelocs_for_got_info (&ah->got_ents,
+ output_bfd,
+ info,
+ h);
- bfd_vma dynindx = h->dynindx == -1 ? 0 : h->dynindx;
- if (e == MOD_AND_OFF || e == MOD)
- {
- ADD_RELA (output_bfd, got, got_offset, dynindx,
- R_ARC_TLS_DTPMOD, 0);
- ARC_DEBUG ("arc_info: TLS_DYNRELOC: type = %d, \
-GOT_OFFSET = 0x%x, GOT_VMA = 0x%x, INDEX = %d, ADDEND = 0x%x\n",
- list->type,
- got_offset,
- htab->sgot->output_section->vma
- + htab->sgot->output_offset + got_offset,
- dynindx, 0);
- }
- if (e == MOD_AND_OFF || e == OFF)
- {
- bfd_vma addend = 0;
- if (list->type == GOT_TLS_IE)
- addend = bfd_get_32 (output_bfd,
- htab->sgot->contents + got_offset);
-
- ADD_RELA (output_bfd, got,
- got_offset + (e == MOD_AND_OFF ? 4 : 0),
- dynindx,
- (list->type == GOT_TLS_IE ?
- R_ARC_TLS_TPOFF : R_ARC_TLS_DTPOFF),
- addend);
-
- ARC_DEBUG ("arc_info: TLS_DYNRELOC: type = %d, \
-GOT_OFFSET = 0x%x, GOT_VMA = 0x%x, INDEX = %d, ADDEND = 0x%x\n",
- list->type,
- got_offset,
- htab->sgot->output_section->vma
- + htab->sgot->output_offset + got_offset,
- dynindx, addend);
- }
- }
+ if (h->needs_copy)
+ {
+ struct elf_arc_link_hash_table *arc_htab = elf_arc_hash_table (info);
- list = list->next;
- }
+ if (arc_htab == NULL)
+ return FALSE;
- h->got.glist = NULL;
- }
+ if (h->dynindx == -1
+ || (h->root.type != bfd_link_hash_defined
+ && h->root.type != bfd_link_hash_defweak)
+ || arc_htab->elf.srelbss == NULL)
+ abort ();
- if (h->needs_copy)
- {
bfd_vma rel_offset = (h->root.u.def.value
+ h->root.u.def.section->output_section->vma
+ h->root.u.def.section->output_offset);
- asection *srelbss =
- bfd_get_section_by_name (h->root.u.def.section->owner,
- ".rela.bss");
-
- bfd_byte * loc = srelbss->contents
- + (srelbss->reloc_count * sizeof (Elf32_External_Rela));
- srelbss->reloc_count++;
+ bfd_byte * loc = arc_htab->elf.srelbss->contents
+ + (arc_htab->elf.srelbss->reloc_count * sizeof (Elf32_External_Rela));
+ arc_htab->elf.srelbss->reloc_count++;
Elf_Internal_Rela rel;
rel.r_addend = 0;
rel.r_offset = rel_offset;
+
+ BFD_ASSERT (h->dynindx != -1);
rel.r_info = ELF32_R_INFO (h->dynindx, R_ARC_COPY);
bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
return TRUE;
}
-#define GET_SYMBOL_OR_SECTION(TAG, SYMBOL, SECTION, ASSERT) \
+#define GET_SYMBOL_OR_SECTION(TAG, SYMBOL, SECTION) \
case TAG: \
if (SYMBOL != NULL) \
- { \
- h = elf_link_hash_lookup (elf_hash_table (info), \
- SYMBOL, FALSE, FALSE, TRUE); \
- } \
+ h = elf_link_hash_lookup (elf_hash_table (info), \
+ SYMBOL, FALSE, FALSE, TRUE); \
else if (SECTION != NULL) \
- { \
- s = bfd_get_section_by_name (output_bfd, SECTION); \
- BFD_ASSERT (s != NULL || !ASSERT); \
- do_it = TRUE; \
- } \
+ s = bfd_get_linker_section (dynobj, SECTION); \
break;
+
+struct obfd_info_group {
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+};
+
+static bfd_boolean
+arc_create_forced_local_got_entries_for_tls (struct bfd_hash_entry *bh,
+ void *data)
+{
+ struct elf_arc_link_hash_entry * h =
+ (struct elf_arc_link_hash_entry *) bh;
+ struct obfd_info_group *tmp = (struct obfd_info_group *) data;
+
+ if (h->got_ents != NULL)
+ {
+ BFD_ASSERT (h);
+
+ struct got_entry *list = h->got_ents;
+
+ while (list != NULL)
+ {
+ create_got_dynrelocs_for_single_entry (list, tmp->output_bfd,
+ tmp->info,
+ (struct elf_link_hash_entry *) h);
+ list = list->next;
+ }
+ }
+
+ return TRUE;
+}
+
+
/* Function : elf_arc_finish_dynamic_sections
Brief : Finish up the dynamic sections handling.
Args : output_bfd :
elf_arc_finish_dynamic_sections (bfd * output_bfd,
struct bfd_link_info *info)
{
- struct dynamic_sections ds = arc_create_dynamic_sections (output_bfd, info);
struct elf_link_hash_table *htab = elf_hash_table (info);
bfd *dynobj = (elf_hash_table (info))->dynobj;
+ asection *sdyn = bfd_get_linker_section (dynobj, ".dynamic");
- if (ds.sdyn)
+ if (sdyn)
{
Elf32_External_Dyn *dyncon, *dynconend;
- dyncon = (Elf32_External_Dyn *) ds.sdyn->contents;
- dynconend =
- (Elf32_External_Dyn *) (ds.sdyn->contents + ds.sdyn->size);
+ dyncon = (Elf32_External_Dyn *) sdyn->contents;
+ dynconend
+ = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
for (; dyncon < dynconend; dyncon++)
{
Elf_Internal_Dyn internal_dyn;
switch (internal_dyn.d_tag)
{
- GET_SYMBOL_OR_SECTION (DT_INIT, "_init", NULL, TRUE)
- GET_SYMBOL_OR_SECTION (DT_FINI, "_fini", NULL, TRUE)
- GET_SYMBOL_OR_SECTION (DT_PLTGOT, NULL, ".plt", TRUE)
- GET_SYMBOL_OR_SECTION (DT_JMPREL, NULL, ".rela.plt", TRUE)
- GET_SYMBOL_OR_SECTION (DT_PLTRELSZ, NULL, ".rela.plt", TRUE)
- GET_SYMBOL_OR_SECTION (DT_RELASZ, NULL, ".rela.plt", FALSE)
- GET_SYMBOL_OR_SECTION (DT_VERSYM, NULL, ".gnu.version", TRUE)
- GET_SYMBOL_OR_SECTION (DT_VERDEF, NULL, ".gnu.version_d", TRUE)
- GET_SYMBOL_OR_SECTION (DT_VERNEED, NULL, ".gnu.version_r", TRUE)
+ GET_SYMBOL_OR_SECTION (DT_INIT, info->init_function, NULL)
+ GET_SYMBOL_OR_SECTION (DT_FINI, info->fini_function, NULL)
+ GET_SYMBOL_OR_SECTION (DT_PLTGOT, NULL, ".plt")
+ GET_SYMBOL_OR_SECTION (DT_JMPREL, NULL, ".rela.plt")
+ GET_SYMBOL_OR_SECTION (DT_PLTRELSZ, NULL, ".rela.plt")
+ GET_SYMBOL_OR_SECTION (DT_VERSYM, NULL, ".gnu.version")
+ GET_SYMBOL_OR_SECTION (DT_VERDEF, NULL, ".gnu.version_d")
+ GET_SYMBOL_OR_SECTION (DT_VERNEED, NULL, ".gnu.version_r")
default:
break;
}
if (asec_ptr->output_section != NULL)
{
internal_dyn.d_un.d_val +=
- (asec_ptr->output_section->vma +
- asec_ptr->output_offset);
+ (asec_ptr->output_section->vma
+ + asec_ptr->output_offset);
}
else
{
case DT_VERSYM:
case DT_VERDEF:
case DT_VERNEED:
- internal_dyn.d_un.d_ptr = s->vma;
+ internal_dyn.d_un.d_ptr = (s->output_section->vma
+ + s->output_offset);
do_it = TRUE;
break;
do_it = TRUE;
break;
- case DT_RELASZ:
- if (s != NULL)
- internal_dyn.d_un.d_val -= s->size;
- do_it = TRUE;
- break;
-
default:
break;
}
}
- if (do_it == TRUE)
+ if (do_it)
bfd_elf32_swap_dyn_out (output_bfd, &internal_dyn, dyncon);
}
}
/* TODO: Validate this. */
- elf_section_data (htab->srelplt->output_section)->this_hdr.sh_entsize
- = 0xc;
+ if (htab->srelplt->output_section != bfd_abs_section_ptr)
+ elf_section_data (htab->srelplt->output_section)
+ ->this_hdr.sh_entsize = 12;
}
/* Fill in the first three entries in the global offset table. */
if (htab->sgot)
{
- if (htab->sgot->size > 0 || htab->sgotplt->size > 0)
+ struct elf_link_hash_entry *h;
+ h = elf_link_hash_lookup (elf_hash_table (info), "_GLOBAL_OFFSET_TABLE_",
+ FALSE, FALSE, TRUE);
+
+ if (h != NULL && h->root.type != bfd_link_hash_undefined
+ && h->root.u.def.section != NULL)
{
- if (ds.sdyn == NULL)
+ asection *sec = h->root.u.def.section;
+
+ if (sdyn == NULL)
bfd_put_32 (output_bfd, (bfd_vma) 0,
- htab->sgotplt->contents);
+ sec->contents);
else
bfd_put_32 (output_bfd,
- ds.sdyn->output_section->vma + ds.sdyn->output_offset,
- htab->sgotplt->contents);
- bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 4);
- bfd_put_32 (output_bfd, (bfd_vma) 0, htab->sgotplt->contents + 8);
+ sdyn->output_section->vma + sdyn->output_offset,
+ sec->contents);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) 0, sec->contents + 8);
}
}
+ struct obfd_info_group group;
+ group.output_bfd = output_bfd;
+ group.info = info;
+ bfd_hash_traverse (&info->hash->table,
+ arc_create_forced_local_got_entries_for_tls, &group);
+
return TRUE;
}
/* Set the sizes of the dynamic sections. */
static bfd_boolean
-elf_arc_size_dynamic_sections (bfd * output_bfd,
+elf_arc_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
struct bfd_link_info *info)
{
- bfd * dynobj;
- asection * s;
- bfd_boolean relocs_exist = FALSE;
- bfd_boolean reltext_exist = FALSE;
- struct dynamic_sections ds = arc_create_dynamic_sections (output_bfd, info);
+ bfd *dynobj;
+ asection *s;
+ bfd_boolean relocs_exist = FALSE;
+ bfd_boolean reltext_exist = FALSE;
struct elf_link_hash_table *htab = elf_hash_table (info);
- dynobj = (elf_hash_table (info))->dynobj;
+ dynobj = htab->dynobj;
BFD_ASSERT (dynobj != NULL);
- if ((elf_hash_table (info))->dynamic_sections_created)
+ if (htab->dynamic_sections_created)
{
struct elf_link_hash_entry *h;
/* Set the contents of the .interp section to the
interpreter. */
- if (!bfd_link_pic (info))
+ if (bfd_link_executable (info) && !info->nointerp)
{
s = bfd_get_section_by_name (dynobj, ".interp");
BFD_ASSERT (s != NULL);
section. Checking if the .init section is present. We also
create DT_INIT and DT_FINI entries if the init_str has been
changed by the user. */
- ADD_DYNAMIC_SYMBOL ("init", DT_INIT);
- ADD_DYNAMIC_SYMBOL ("fini", DT_FINI);
+ ADD_DYNAMIC_SYMBOL (info->init_function, DT_INIT);
+ ADD_DYNAMIC_SYMBOL (info->fini_function, DT_FINI);
}
else
{
htab->srelgot->size = 0;
}
- if (htab->splt != NULL && htab->splt->size == 0)
- htab->splt->flags |= SEC_EXCLUDE;
for (s = dynobj->sections; s != NULL; s = s->next)
{
if ((s->flags & SEC_LINKER_CREATED) == 0)
continue;
- if (strncmp (s->name, ".rela", 5) == 0)
+ if (s == htab->splt
+ || s == htab->sgot
+ || s == htab->sgotplt
+ || s == htab->sdynbss)
{
- if (s->size == 0)
- {
- s->flags |= SEC_EXCLUDE;
- }
- else
+ /* Strip this section if we don't need it. */
+ }
+ else if (strncmp (s->name, ".rela", 5) == 0)
+ {
+ if (s->size != 0 && s != htab->srelplt)
{
- if (strcmp (s->name, ".rela.plt") != 0)
+ if (!reltext_exist)
{
- const char *outname =
- bfd_get_section_name (output_bfd,
- htab->srelplt->output_section);
-
- asection *target = bfd_get_section_by_name (output_bfd,
- outname + 4);
-
- relocs_exist = TRUE;
- if (target != NULL && target->size != 0
- && (target->flags & SEC_READONLY) != 0
- && (target->flags & SEC_ALLOC) != 0)
- reltext_exist = TRUE;
+ const char *name = s->name + 5;
+ bfd *ibfd;
+ for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
+ if (bfd_get_flavour (ibfd) == bfd_target_elf_flavour
+ && ibfd->flags & DYNAMIC)
+ {
+ asection *target = bfd_get_section_by_name (ibfd, name);
+ if (target != NULL
+ && elf_section_data (target)->sreloc == s
+ && ((target->output_section->flags
+ & (SEC_READONLY | SEC_ALLOC))
+ == (SEC_READONLY | SEC_ALLOC)))
+ {
+ reltext_exist = TRUE;
+ break;
+ }
+ }
}
+ relocs_exist = TRUE;
}
/* We use the reloc_count field as a counter if we need to
copy relocs into the output file. */
s->reloc_count = 0;
}
+ else
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
+ }
- if (strcmp (s->name, ".dynamic") == 0)
- continue;
+ if (s->size == 0)
+ {
+ s->flags |= SEC_EXCLUDE;
+ continue;
+ }
- if (s->size != 0)
- s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
+ if ((s->flags & SEC_HAS_CONTENTS) == 0)
+ continue;
- if (s->contents == NULL && s->size != 0)
+ /* Allocate memory for the section contents. */
+ s->contents = bfd_zalloc (dynobj, s->size);
+ if (s->contents == NULL)
return FALSE;
}
- if (ds.sdyn)
+ if (htab->dynamic_sections_created)
{
/* TODO: Check if this is needed. */
if (!bfd_link_pic (info))
if (!_bfd_elf_add_dynamic_entry (info, DT_PLTGOT, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_PLTRELSZ, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
- || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0)
- )
+ || !_bfd_elf_add_dynamic_entry (info, DT_JMPREL, 0))
return FALSE;
- if (relocs_exist == TRUE)
+ if (relocs_exist)
if (!_bfd_elf_add_dynamic_entry (info, DT_RELA, 0)
|| !_bfd_elf_add_dynamic_entry (info, DT_RELASZ, 0)
- || !_bfd_elf_add_dynamic_entry (info, DT_RELENT,
- sizeof (Elf32_External_Rela))
- )
+ || !_bfd_elf_add_dynamic_entry (info, DT_RELAENT,
+ sizeof (Elf32_External_Rela)))
return FALSE;
- if (reltext_exist == TRUE)
+ if (reltext_exist)
if (!_bfd_elf_add_dynamic_entry (info, DT_TEXTREL, 0))
return FALSE;
}
return TRUE;
}
+
+/* Classify dynamic relocs such that -z combreloc can reorder and combine
+ them. */
+static enum elf_reloc_type_class
+elf32_arc_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
+ const asection *rel_sec ATTRIBUTE_UNUSED,
+ const Elf_Internal_Rela *rela)
+{
+ switch ((int) ELF32_R_TYPE (rela->r_info))
+ {
+ case R_ARC_RELATIVE:
+ return reloc_class_relative;
+ case R_ARC_JMP_SLOT:
+ return reloc_class_plt;
+ case R_ARC_COPY:
+ return reloc_class_copy;
+ /* TODO: Needed in future to support ifunc. */
+ /*
+ case R_ARC_IRELATIVE:
+ return reloc_class_ifunc;
+ */
+ default:
+ return reloc_class_normal;
+ }
+}
+
const struct elf_size_info arc_elf32_size_info =
{
sizeof (Elf32_External_Ehdr),
#define elf_backend_size_info arc_elf32_size_info
-static struct bfd_link_hash_table *
-arc_elf_link_hash_table_create (bfd *abfd)
+/* GDB expects general purpose registers to be in section .reg. However Linux
+ kernel doesn't create this section and instead writes registers to NOTE
+ section. It is up to the binutils to create a pseudo-section .reg from the
+ contents of NOTE. Also BFD will read pid and signal number from NOTE. This
+ function relies on offsets inside elf_prstatus structure in Linux to be
+ stable. */
+
+static bfd_boolean
+elf32_arc_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
{
- struct elf_link_hash_table *htab;
+ int offset;
+ size_t size;
- htab = bfd_zmalloc (sizeof (*htab));
- if (htab == NULL)
- return NULL;
+ switch (note->descsz)
+ {
+ default:
+ return FALSE;
+
+ case 236: /* sizeof (struct elf_prstatus) on Linux/arc. */
+ /* pr_cursig */
+ elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12);
+ /* pr_pid */
+ elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 24);
+ /* pr_regs */
+ offset = 72;
+ size = (40 * 4); /* There are 40 registers in user_regs_struct. */
+ break;
+ }
+ /* Make a ".reg/999" section. */
+ return _bfd_elfcore_make_pseudosection (abfd, ".reg", size,
+ note->descpos + offset);
+}
+
+/* Determine whether an object attribute tag takes an integer, a
+ string or both. */
+
+static int
+elf32_arc_obj_attrs_arg_type (int tag)
+{
+ if (tag == Tag_ARC_CPU_name
+ || tag == Tag_ARC_ISA_config
+ || tag == Tag_ARC_ISA_apex)
+ return ATTR_TYPE_FLAG_STR_VAL;
+ else if (tag < (Tag_ARC_ISA_mpy_option + 1))
+ return ATTR_TYPE_FLAG_INT_VAL;
+ else
+ return (tag & 1) != 0 ? ATTR_TYPE_FLAG_STR_VAL : ATTR_TYPE_FLAG_INT_VAL;
+}
+
+/* Attribute numbers >=14 can be safely ignored. */
- if (!_bfd_elf_link_hash_table_init (htab, abfd,
- _bfd_elf_link_hash_newfunc,
- sizeof (struct elf_link_hash_entry),
- GENERIC_ELF_DATA))
+static bfd_boolean
+elf32_arc_obj_attrs_handle_unknown (bfd *abfd, int tag)
+{
+ if ((tag & 127) < (Tag_ARC_ISA_mpy_option + 1))
{
- free (htab);
- return NULL;
+ _bfd_error_handler
+ (_("%pB: unknown mandatory ARC object attribute %d"),
+ abfd, tag);
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
+ else
+ {
+ _bfd_error_handler
+ (_("warning: %pB: unknown ARC object attribute %d"),
+ abfd, tag);
+ return TRUE;
+ }
+}
+
+/* Handle an ARC specific section when reading an object file. This is
+ called when bfd_section_from_shdr finds a section with an unknown
+ type. */
+
+static bfd_boolean
+elf32_arc_section_from_shdr (bfd *abfd,
+ Elf_Internal_Shdr * hdr,
+ const char *name,
+ int shindex)
+{
+ switch (hdr->sh_type)
+ {
+ case 0x0c: /* MWDT specific section, don't complain about it. */
+ case SHT_ARC_ATTRIBUTES:
+ break;
+
+ default:
+ return FALSE;
}
- htab->init_got_refcount.refcount = 0;
- htab->init_got_refcount.glist = NULL;
- htab->init_got_offset.offset = 0;
- htab->init_got_offset.glist = NULL;
- return (struct bfd_link_hash_table *) htab;
+ if (!_bfd_elf_make_section_from_shdr (abfd, hdr, name, shindex))
+ return FALSE;
+
+ return TRUE;
}
-/* Hook called by the linker routine which adds symbols from an object
- file. */
+/* Relaxation hook.
+
+ These are the current relaxing opportunities available:
+
+ * R_ARC_GOTPC32 => R_ARC_PCREL.
+
+*/
static bfd_boolean
-elf_arc_add_symbol_hook (bfd * abfd,
- struct bfd_link_info * info,
- Elf_Internal_Sym * sym,
- const char ** namep ATTRIBUTE_UNUSED,
- flagword * flagsp ATTRIBUTE_UNUSED,
- asection ** secp ATTRIBUTE_UNUSED,
- bfd_vma * valp ATTRIBUTE_UNUSED)
+arc_elf_relax_section (bfd *abfd, asection *sec,
+ struct bfd_link_info *link_info, bfd_boolean *again)
{
- if ((ELF_ST_TYPE (sym->st_info) == STT_GNU_IFUNC
- || ELF_ST_BIND (sym->st_info) == STB_GNU_UNIQUE)
- && (abfd->flags & DYNAMIC) == 0
- && bfd_get_flavour (info->output_bfd) == bfd_target_elf_flavour)
- elf_tdata (info->output_bfd)->has_gnu_symbols = elf_gnu_symbol_any;
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Rela *internal_relocs;
+ Elf_Internal_Rela *irel, *irelend;
+ bfd_byte *contents = NULL;
+ Elf_Internal_Sym *isymbuf = NULL;
+
+ /* Assume nothing changes. */
+ *again = FALSE;
+
+ /* We don't have to do anything for a relocatable link, if this
+ section does not have relocs, or if this is not a code
+ section. */
+ if (bfd_link_relocatable (link_info)
+ || (sec->flags & SEC_RELOC) == 0
+ || sec->reloc_count == 0
+ || (sec->flags & SEC_CODE) == 0)
+ return TRUE;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+ /* Get a copy of the native relocations. */
+ internal_relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
+ link_info->keep_memory);
+ if (internal_relocs == NULL)
+ goto error_return;
+
+ /* Walk through them looking for relaxing opportunities. */
+ irelend = internal_relocs + sec->reloc_count;
+ for (irel = internal_relocs; irel < irelend; irel++)
+ {
+ /* If this isn't something that can be relaxed, then ignore
+ this reloc. */
+ if (ELF32_R_TYPE (irel->r_info) != (int) R_ARC_GOTPC32)
+ continue;
+
+ /* Get the section contents if we haven't done so already. */
+ if (contents == NULL)
+ {
+ /* Get cached copy if it exists. */
+ if (elf_section_data (sec)->this_hdr.contents != NULL)
+ contents = elf_section_data (sec)->this_hdr.contents;
+ /* Go get them off disk. */
+ else if (!bfd_malloc_and_get_section (abfd, sec, &contents))
+ goto error_return;
+ }
+
+ /* Read this BFD's local symbols if we haven't done so already. */
+ if (isymbuf == NULL && symtab_hdr->sh_info != 0)
+ {
+ isymbuf = (Elf_Internal_Sym *) symtab_hdr->contents;
+ if (isymbuf == NULL)
+ isymbuf = bfd_elf_get_elf_syms (abfd, symtab_hdr,
+ symtab_hdr->sh_info, 0,
+ NULL, NULL, NULL);
+ if (isymbuf == NULL)
+ goto error_return;
+ }
+
+ struct elf_link_hash_entry *htop = NULL;
+
+ if (ELF32_R_SYM (irel->r_info) >= symtab_hdr->sh_info)
+ {
+ /* An external symbol. */
+ unsigned int indx = ELF32_R_SYM (irel->r_info) - symtab_hdr->sh_info;
+ htop = elf_sym_hashes (abfd)[indx];
+ }
+
+ if (ELF32_R_TYPE (irel->r_info) == (int) R_ARC_GOTPC32
+ && SYMBOL_REFERENCES_LOCAL (link_info, htop))
+ {
+ unsigned int code;
+
+ /* Get the opcode. */
+ code = bfd_get_32_me (abfd, contents + irel->r_offset - 4);
+
+ /* Note that we've changed the relocs, section contents, etc. */
+ elf_section_data (sec)->relocs = internal_relocs;
+ elf_section_data (sec)->this_hdr.contents = contents;
+ symtab_hdr->contents = (unsigned char *) isymbuf;
+
+ /* Fix the relocation's type. */
+ irel->r_info = ELF32_R_INFO (ELF32_R_SYM (irel->r_info), R_ARC_PC32);
+
+ /* ld rA,[pcl,symbol@tgot] -> add rA,pcl,symbol@pcl. */
+ /* 0010 0bbb aa11 0ZZX DBBB 1111 10AA AAAA.
+ 111 00 000 0111 xx xxxx*/
+ code &= ~0x27307F80;
+ BFD_ASSERT (code <= 62UL);
+ code |= 0x27007F80;
+
+ /* Write back the new instruction. */
+ bfd_put_32_me (abfd, code, contents + irel->r_offset - 4);
+
+ /* The size isn't changed, don't redo. */
+ *again = FALSE;
+ }
+ }
+
+ if (isymbuf != NULL
+ && symtab_hdr->contents != (unsigned char *) isymbuf)
+ {
+ if (!link_info->keep_memory)
+ free (isymbuf);
+ else
+ /* Cache the symbols for elf_link_input_bfd. */
+ symtab_hdr->contents = (unsigned char *) isymbuf;
+ }
+
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
+ {
+ if (!link_info->keep_memory)
+ free (contents);
+ else
+ /* Cache the section contents for elf_link_input_bfd. */
+ elf_section_data (sec)->this_hdr.contents = contents;
+ }
+
+ if (internal_relocs != NULL
+ && elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
return TRUE;
+
+ error_return:
+ if (isymbuf != NULL
+ && symtab_hdr->contents != (unsigned char *) isymbuf)
+ free (isymbuf);
+ if (contents != NULL
+ && elf_section_data (sec)->this_hdr.contents != contents)
+ free (contents);
+ if (internal_relocs != NULL
+ && elf_section_data (sec)->relocs != internal_relocs)
+ free (internal_relocs);
+
+ return FALSE;
}
#define TARGET_LITTLE_SYM arc_elf32_le_vec
#define TARGET_BIG_SYM arc_elf32_be_vec
#define TARGET_BIG_NAME "elf32-bigarc"
#define ELF_ARCH bfd_arch_arc
+#define ELF_TARGET_ID ARC_ELF_DATA
#define ELF_MACHINE_CODE EM_ARC_COMPACT
#define ELF_MACHINE_ALT1 EM_ARC_COMPACT2
#define ELF_MAXPAGESIZE 0x2000
#define bfd_elf32_bfd_set_private_flags arc_elf_set_private_flags
#define bfd_elf32_bfd_print_private_bfd_data arc_elf_print_private_bfd_data
#define bfd_elf32_bfd_copy_private_bfd_data arc_elf_copy_private_bfd_data
+#define bfd_elf32_bfd_relax_section arc_elf_relax_section
#define elf_info_to_howto_rel arc_info_to_howto_rel
#define elf_backend_object_p arc_elf_object_p
#define elf_backend_check_relocs elf_arc_check_relocs
#define elf_backend_create_dynamic_sections _bfd_elf_create_dynamic_sections
+#define elf_backend_reloc_type_class elf32_arc_reloc_type_class
+
#define elf_backend_adjust_dynamic_symbol elf_arc_adjust_dynamic_symbol
#define elf_backend_finish_dynamic_symbol elf_arc_finish_dynamic_symbol
#define elf_backend_finish_dynamic_sections elf_arc_finish_dynamic_sections
#define elf_backend_size_dynamic_sections elf_arc_size_dynamic_sections
-#define elf_backend_add_symbol_hook elf_arc_add_symbol_hook
#define elf_backend_can_gc_sections 1
#define elf_backend_want_got_plt 1
#define elf_backend_rela_plts_and_copies_p 1
#define elf_backend_want_plt_sym 0
#define elf_backend_got_header_size 12
+#define elf_backend_dtrel_excludes_plt 1
#define elf_backend_may_use_rel_p 0
#define elf_backend_may_use_rela_p 1
#define elf_backend_default_use_rela_p 1
+#define elf_backend_grok_prstatus elf32_arc_grok_prstatus
+
+#define elf_backend_default_execstack 0
+
+#undef elf_backend_obj_attrs_vendor
+#define elf_backend_obj_attrs_vendor "ARC"
+#undef elf_backend_obj_attrs_section
+#define elf_backend_obj_attrs_section ".ARC.attributes"
+#undef elf_backend_obj_attrs_arg_type
+#define elf_backend_obj_attrs_arg_type elf32_arc_obj_attrs_arg_type
+#undef elf_backend_obj_attrs_section_type
+#define elf_backend_obj_attrs_section_type SHT_ARC_ATTRIBUTES
+#define elf_backend_obj_attrs_handle_unknown elf32_arc_obj_attrs_handle_unknown
+
+#define elf_backend_section_from_shdr elf32_arc_section_from_shdr
+
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff