Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000
Free Software Foundation, Inc.
- Written by
-
+ Original code by
Center for Software Science
Department of Computer Science
University of Utah
+ Largely rewritten by Alan Modra <alan@linuxcare.com.au>
This file is part of BFD, the Binary File Descriptor library.
The second is the stub hash table which is derived from the
base BFD hash table. The stub hash table holds the information
- necessary to build the linker stubs during a link. */
+ necessary to build the linker stubs during a link.
+
+ There are a number of different stubs generated by the linker.
+
+ Long branch stub:
+ : ldil LR'X,%r1
+ : be,n RR'X(%sr4,%r1)
+
+ PIC long branch stub:
+ : b,l .+8,%r1
+ : addil L'X - ($PIC_pcrel$0 - 4),%r1
+ : be,n R'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
+
+ Import stub to call shared library routine from normal object file
+ (single sub-space version)
+ : addil L'lt_ptr+ltoff,%dp ; get procedure entry point
+ : ldw R'lt_ptr+ltoff(%r1),%r21
+ : bv %r0(%r21)
+ : ldw R'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
+
+ Import stub to call shared library routine from shared library
+ (single sub-space version)
+ : addil L'ltoff,%r19 ; get procedure entry point
+ : ldw R'ltoff(%r1),%r21
+ : bv %r0(%r21)
+ : ldw R'ltoff+4(%r1),%r19 ; get new dlt value.
+
+ Import stub to call shared library routine from normal object file
+ (multiple sub-space support)
+ : addil L'lt_ptr+ltoff,%dp ; get procedure entry point
+ : ldw R'lt_ptr+ltoff(%r1),%r21
+ : ldw R'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value.
+ : ldsid (%r21),%r1
+ : mtsp %r1,%sr0
+ : be 0(%sr0,%r21) ; branch to target
+ : stw %rp,-24(%sp) ; save rp
+
+ Import stub to call shared library routine from shared library
+ (multiple sub-space support)
+ : addil L'ltoff,%r19 ; get procedure entry point
+ : ldw R'ltoff(%r1),%r21
+ : ldw R'ltoff+4(%r1),%r19 ; get new dlt value.
+ : ldsid (%r21),%r1
+ : mtsp %r1,%sr0
+ : be 0(%sr0,%r21) ; branch to target
+ : stw %rp,-24(%sp) ; save rp
+
+ Export stub to return from shared lib routine (multiple sub-space support)
+ One of these is created for each exported procedure in a shared
+ library (and stored in the shared lib). Shared lib routines are
+ called via the first instruction in the export stub so that we can
+ do an inter-space return. Not required for single sub-space.
+ : bl,n X,%rp ; trap the return
+ : nop
+ : ldw -24(%sp),%rp ; restore the original rp
+ : ldsid (%rp),%r1
+ : mtsp %r1,%sr0
+ : be,n 0(%sr0,%rp) ; inter-space return
+*/
+
+#define PLT_ENTRY_SIZE 8
+#define GOT_ENTRY_SIZE 4
+#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
+
+/* Section name for stubs is the associated section name plus this
+ string. */
+#define STUB_SUFFIX ".stub"
+
+/* Setting the following non-zero makes all long branch stubs
+ generated during a shared link of the PIC variety. This saves on
+ relocs, but costs one extra instruction per stub. */
+#ifndef LONG_BRANCH_PIC_IN_SHLIB
+#define LONG_BRANCH_PIC_IN_SHLIB 1
+#endif
-/* Hash table for linker stubs. */
+/* We don't need to copy any PC- or GP-relative dynamic relocs into a
+ shared object's dynamic section. */
+#ifndef RELATIVE_DYNAMIC_RELOCS
+#define RELATIVE_DYNAMIC_RELOCS 0
+#endif
+
+
+enum elf32_hppa_stub_type {
+ hppa_stub_long_branch,
+ hppa_stub_long_branch_shared,
+ hppa_stub_import,
+ hppa_stub_import_shared,
+ hppa_stub_export,
+ hppa_stub_none
+};
+
+
+struct elf32_hppa_stub_hash_entry {
-struct elf32_hppa_stub_hash_entry
-{
/* Base hash table entry structure. */
struct bfd_hash_entry root;
/* The stub section. */
asection *stub_sec;
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ /* It's associated reloc section. */
+ asection *reloc_sec;
+#endif
+
/* Offset within stub_sec of the beginning of this stub. */
- bfd_vma offset;
+ bfd_vma stub_offset;
/* Given the symbol's value and its section we can determine its final
value when building the stubs (so the stub knows where to jump. */
- symvalue target_value;
+ bfd_vma target_value;
asection *target_section;
+
+ enum elf32_hppa_stub_type stub_type;
+
+ /* The symbol table entry, if any, that this was derived from. */
+ struct elf32_hppa_link_hash_entry *h;
+
+ /* Where this stub is being called from. */
+ asection *input_section;
};
-struct elf32_hppa_link_hash_table
-{
+
+struct elf32_hppa_link_hash_entry {
+
+ struct elf_link_hash_entry elf;
+
+ /* A pointer to the most recently used stub hash entry against this
+ symbol. */
+ struct elf32_hppa_stub_hash_entry *stub_cache;
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ /* Used to track whether we have allocated space for a long branch
+ stub relocation for this symbol in the given section. */
+ asection *stub_reloc_sec;
+#endif
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS
+ /* Used to count relocations for delayed sizing of relocation
+ sections. */
+ struct elf32_hppa_dyn_reloc_entry {
+
+ /* Next relocation in the chain. */
+ struct elf32_hppa_dyn_reloc_entry *next;
+
+ /* The section in dynobj. */
+ asection *section;
+
+ /* Number of relocs copied in this section. */
+ bfd_size_type count;
+ } *reloc_entries;
+#endif
+
+ /* Set during a static link if we detect a function is PIC. */
+ boolean pic_call;
+};
+
+
+struct elf32_hppa_link_hash_table {
+
/* The main hash table. */
struct elf_link_hash_table root;
/* The stub hash table. */
struct bfd_hash_table stub_hash_table;
+ /* Linker stub bfd. */
+ bfd *stub_bfd;
+
+ /* Whether we support multiple sub-spaces for shared libs. */
+ boolean multi_subspace;
+
+ /* Linker call-backs. */
+ asection * (*add_stub_section) PARAMS ((const char *, asection *));
+ void (*layout_sections_again) PARAMS ((void));
+
+ /* Arrays to keep track of which stub sections have been created. */
+ asection **stub_section_created;
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ asection **reloc_section_created;
+#endif
+ int first_init_sec;
+ int first_fini_sec;
+
/* Current offsets in the stub sections. */
bfd_vma *offset;
- /* Global data pointer. */
- bfd_vma global_value;
+ /* Short-cuts to get to dynamic linker sections. */
+ asection *sgot;
+ asection *srelgot;
+ asection *splt;
+ asection *srelplt;
+ asection *sdynbss;
+ asection *srelbss;
};
-/* For linker stub hash tables. */
-
-#define elf32_hppa_stub_hash_lookup(table, string, create, copy) \
- ((struct elf32_hppa_stub_hash_entry *) \
- bfd_hash_lookup ((table), (string), (create), (copy)))
+/* Functions named elf32_hppa_* are called by external routines, other
+ functions are only called locally. elf32_hppa_* functions appear
+ in this file more or less in the order in which they are called
+ from external routines. eg. elf32_hppa_check_relocs is called
+ early in the link process, elf32_hppa_finish_dynamic_sections is
+ one of the last functions. */
-/* Get the PA ELF linker hash table from a link_info structure. */
-#define elf32_hppa_hash_table(p) \
+/* Various hash macros and functions. */
+#define hppa_link_hash_table(p) \
((struct elf32_hppa_link_hash_table *) ((p)->hash))
+#define hppa_stub_hash_lookup(table, string, create, copy) \
+ ((struct elf32_hppa_stub_hash_entry *) \
+ bfd_hash_lookup ((table), (string), (create), (copy)))
+
+static struct bfd_hash_entry *stub_hash_newfunc
+ PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
-static struct bfd_hash_entry *elf32_hppa_stub_hash_newfunc
+static struct bfd_hash_entry *hppa_link_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create
PARAMS ((bfd *));
-static char *elf32_hppa_stub_name
- PARAMS ((const char *, const asection *, const asection *,
- bfd_vma, const struct elf_link_hash_entry *));
-static int elf32_hppa_relocate_insn
- PARAMS ((int, bfd_vma, bfd_signed_vma, unsigned int, int,
- enum hppa_reloc_field_selector_type_alt));
+/* Stub handling functions. */
+static char *hppa_stub_name
+ PARAMS ((const asection *, const asection *,
+ const struct elf32_hppa_link_hash_entry *,
+ const Elf_Internal_Rela *));
-static bfd_reloc_status_type elf32_hppa_bfd_final_link_relocate
- PARAMS ((reloc_howto_type *, bfd *, asection *,
- bfd_byte *, bfd_vma, bfd_vma, bfd_signed_vma,
- struct bfd_link_info *, asection *, const char *,
- struct elf_link_hash_entry *));
+static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry
+ PARAMS ((const asection *, const asection *,
+ struct elf32_hppa_link_hash_entry *,
+ const Elf_Internal_Rela *, struct bfd_link_info *));
-static boolean elf32_hppa_relocate_section
- PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
- bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
+static struct elf32_hppa_stub_hash_entry *hppa_add_stub
+ PARAMS ((const char *, asection *, unsigned int,
+ struct bfd_link_info *));
+
+static enum elf32_hppa_stub_type hppa_type_of_stub
+ PARAMS ((asection *, const Elf_Internal_Rela *,
+ struct elf32_hppa_link_hash_entry *, bfd_vma));
+
+static boolean hppa_build_one_stub
+ PARAMS ((struct bfd_hash_entry *, PTR));
+
+static boolean hppa_size_one_stub
+ PARAMS ((struct bfd_hash_entry *, PTR));
+
+
+/* BFD and elf backend functions. */
+static boolean elf32_hppa_object_p PARAMS ((bfd *));
static boolean elf32_hppa_add_symbol_hook
PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
const char **, flagword *, asection **, bfd_vma *));
-static unsigned int elf32_hppa_size_of_stub
- PARAMS ((asection *, bfd_vma, bfd_vma));
+static boolean elf32_hppa_create_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
-static boolean elf32_hppa_build_one_stub
- PARAMS ((struct bfd_hash_entry *, PTR));
+static boolean elf32_hppa_check_relocs
+ PARAMS ((bfd *, struct bfd_link_info *,
+ asection *, const Elf_Internal_Rela *));
+
+static asection *elf32_hppa_gc_mark_hook
+ PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *,
+ struct elf_link_hash_entry *, Elf_Internal_Sym *));
+
+static boolean elf32_hppa_gc_sweep_hook
+ PARAMS ((bfd *, struct bfd_link_info *,
+ asection *, const Elf_Internal_Rela *));
+
+static boolean elf32_hppa_adjust_dynamic_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
+
+static boolean hppa_handle_PIC_calls
+ PARAMS ((struct elf_link_hash_entry *, PTR));
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS
+static boolean hppa_discard_copies
+ PARAMS ((struct elf_link_hash_entry *, PTR));
+#endif
+
+static boolean elf32_hppa_size_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+
+static bfd_reloc_status_type final_link_relocate
+ PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *,
+ bfd_vma, struct bfd_link_info *, asection *,
+ struct elf32_hppa_link_hash_entry *));
+
+static boolean elf32_hppa_relocate_section
+ PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *,
+ bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
+
+static boolean elf32_hppa_finish_dynamic_symbol
+ PARAMS ((bfd *, struct bfd_link_info *,
+ struct elf_link_hash_entry *, Elf_Internal_Sym *));
+
+static boolean elf32_hppa_finish_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
+
+static int elf32_hppa_elf_get_symbol_type
+ PARAMS ((Elf_Internal_Sym *, int));
/* Assorted hash table functions. */
/* Initialize an entry in the stub hash table. */
static struct bfd_hash_entry *
-elf32_hppa_stub_hash_newfunc (entry, table, string)
+stub_hash_newfunc (entry, table, string)
struct bfd_hash_entry *entry;
struct bfd_hash_table *table;
const char *string;
/* Allocate the structure if it has not already been allocated by a
subclass. */
if (ret == NULL)
- ret = ((struct elf32_hppa_stub_hash_entry *)
- bfd_hash_allocate (table,
- sizeof (struct elf32_hppa_stub_hash_entry)));
- if (ret == NULL)
- return NULL;
+ {
+ ret = ((struct elf32_hppa_stub_hash_entry *)
+ bfd_hash_allocate (table,
+ sizeof (struct elf32_hppa_stub_hash_entry)));
+ if (ret == NULL)
+ return NULL;
+ }
/* Call the allocation method of the superclass. */
ret = ((struct elf32_hppa_stub_hash_entry *)
{
/* Initialize the local fields. */
ret->stub_sec = NULL;
- ret->offset = 0;
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ ret->reloc_sec = NULL;
+#endif
+ ret->stub_offset = 0;
ret->target_value = 0;
ret->target_section = NULL;
+ ret->stub_type = hppa_stub_long_branch;
+ ret->h = NULL;
+ ret->input_section = NULL;
+ }
+
+ return (struct bfd_hash_entry *) ret;
+}
+
+
+/* Initialize an entry in the link hash table. */
+
+static struct bfd_hash_entry *
+hppa_link_hash_newfunc (entry, table, string)
+ struct bfd_hash_entry *entry;
+ struct bfd_hash_table *table;
+ const char *string;
+{
+ struct elf32_hppa_link_hash_entry *ret;
+
+ ret = (struct elf32_hppa_link_hash_entry *) entry;
+
+ /* Allocate the structure if it has not already been allocated by a
+ subclass. */
+ if (ret == NULL)
+ {
+ ret = ((struct elf32_hppa_link_hash_entry *)
+ bfd_hash_allocate (table,
+ sizeof (struct elf32_hppa_link_hash_entry)));
+ if (ret == NULL)
+ return NULL;
+ }
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct elf32_hppa_link_hash_entry *)
+ _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
+ table, string));
+
+ if (ret)
+ {
+ /* Initialize the local fields. */
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ ret->stub_reloc_sec = NULL;
+#endif
+ ret->stub_cache = NULL;
+#if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS
+ ret->reloc_entries = NULL;
+#endif
+ ret->pic_call = 0;
}
return (struct bfd_hash_entry *) ret;
}
+
/* Create the derived linker hash table. The PA ELF port uses the derived
hash table to keep information specific to the PA ELF linker (without
using static variables). */
if (ret == NULL)
return NULL;
- if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
- _bfd_elf_link_hash_newfunc))
+ if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, hppa_link_hash_newfunc))
{
bfd_release (abfd, ret);
return NULL;
}
/* Init the stub hash table too. */
- if (!bfd_hash_table_init (&ret->stub_hash_table,
- elf32_hppa_stub_hash_newfunc))
+ if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc))
return NULL;
+ ret->stub_bfd = NULL;
+ ret->multi_subspace = 0;
+ ret->add_stub_section = NULL;
+ ret->layout_sections_again = NULL;
+ ret->stub_section_created = NULL;
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ ret->reloc_section_created = NULL;
+#endif
+ ret->first_init_sec = 0;
+ ret->first_fini_sec = 0;
ret->offset = NULL;
- ret->global_value = 0;
+ ret->sgot = NULL;
+ ret->srelgot = NULL;
+ ret->splt = NULL;
+ ret->srelplt = NULL;
+ ret->sdynbss = NULL;
+ ret->srelbss = NULL;
return &ret->root.root;
}
-/* Build a name for a long branch stub. */
+
+/* Build a name for an entry in the stub hash table. */
+
static char *
-elf32_hppa_stub_name (sym_name, sym_sec, input_section, addend, hash)
- const char *sym_name;
- const asection *sym_sec;
+hppa_stub_name (input_section, sym_sec, hash, rel)
const asection *input_section;
- bfd_vma addend;
- const struct elf_link_hash_entry *hash;
+ const asection *sym_sec;
+ const struct elf32_hppa_link_hash_entry *hash;
+ const Elf_Internal_Rela *rel;
{
char *stub_name;
- int len;
+ unsigned int len;
- len = strlen (sym_name) + 19;
- if (hash == NULL)
- len += 9;
-
- stub_name = bfd_malloc (len);
- if (stub_name != NULL)
+ if (hash)
+ {
+ len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1;
+ stub_name = bfd_malloc (len);
+ if (stub_name != NULL)
+ {
+ sprintf (stub_name, "%08x_%s+%x",
+ input_section->id & 0xffffffff,
+ hash->elf.root.root.string,
+ (int) rel->r_addend & 0xffffffff);
+ }
+ }
+ else
{
- sprintf (stub_name, "%08x_%08x_%s",
- input_section->id & 0xffffffff,
- (int) addend & 0xffffffff,
- sym_name);
-
- /* Tack on an ID so we can uniquely identify
- this local symbol in the stub hash tables. */
- if (hash == NULL)
- sprintf (stub_name + len - 10, "_%08x",
- sym_sec->id & 0xffffffff);
+ len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1;
+ stub_name = bfd_malloc (len);
+ if (stub_name != NULL)
+ {
+ sprintf (stub_name, "%08x_%x:%x+%x",
+ input_section->id & 0xffffffff,
+ sym_sec->id & 0xffffffff,
+ (int) ELF32_R_SYM (rel->r_info) & 0xffffffff,
+ (int) rel->r_addend & 0xffffffff);
+ }
}
return stub_name;
}
-/* Relocate the given INSN given the various input parameters. */
-static int
-elf32_hppa_relocate_insn (insn, sym_value, r_addend, r_type, r_format, r_field)
- int insn;
- bfd_vma sym_value;
- bfd_signed_vma r_addend;
- unsigned int r_type;
- int r_format;
- enum hppa_reloc_field_selector_type_alt r_field;
+/* Look up an entry in the stub hash. Stub entries are cached because
+ creating the stub name takes a bit of time. */
+
+static struct elf32_hppa_stub_hash_entry *
+hppa_get_stub_entry (input_section, sym_sec, hash, rel, info)
+ const asection *input_section;
+ const asection *sym_sec;
+ struct elf32_hppa_link_hash_entry *hash;
+ const Elf_Internal_Rela *rel;
+ struct bfd_link_info *info;
{
- int value;
-#ifdef ELF_ARG_RELOC
-#ifndef ELF_ARG_RELOC_INSN
- /* Ick. Who would want to support this? */
- int imm;
+ struct elf32_hppa_stub_hash_entry *stub_entry;
- switch (r_type)
+ if (hash != NULL && hash->stub_cache != NULL
+ && hash->stub_cache->h == hash
+ && hash->stub_cache->input_section == input_section)
{
- /* The offset is partly stored in the instruction for cases
- where the top ten bits of the addend are used for arg_reloc.
- This is a little tricky, because the immediate value in the
- instruction not only needs to be pieced together from
- multiple bit fields, but also needs to be shifted left to
- restore the original quantity. Which bits of the offset
- we can retrieve from the instruction depend on exactly which
- instruction we are dealing with. */
- case R_PARISC_PCREL17R:
- case R_PARISC_PCREL17F:
- case R_PARISC_PCREL17C:
- case R_PARISC_DIR17R:
- case R_PARISC_DIR17F:
- /* For these relocs, we choose to use the low 10 bits from the
- instruction and store the high 22 bits in the reloc addend.
- It doesn't matter that the bottom 2 bits of the value are
- always zero, as branches must be to a location which is a
- multiple of 4. */
-#if 0
- /* It isn't necessary to retrieve the whole immediate, but
- this documents what we have in the instruction. */
- imm = (((insn & 0x1f0000) >> 5)
- | ((insn & 0x0004) << 8)
- | ((insn & 0x1ff8) >> 3)) - ((insn & 1) << 17);
- imm <<= 2;
- imm = imm & 0x3ff;
-#else
- imm = (insn & 0x7f8) >> 1;
-#endif
- r_addend = (r_addend << (BFD_ARCH_SIZE-22)) >> (BFD_ARCH_SIZE-32);
- r_addend = r_addend | imm;
- break;
+ stub_entry = hash->stub_cache;
+ }
+ else
+ {
+ struct bfd_hash_table *stub_hash_table;
+ char *stub_name;
- case R_PARISC_PCREL21L:
- case R_PARISC_DIR21L:
- /* In this case, the instruction stores the high 21 bits of the
- value, so we pick off the top 10 bits, and use the reloc
- addend to store the low 22 bits. */
-#if 0
- /* It isn't necessary to retrieve the whole immediate, but
- this documents what we have in the instruction. */
- imm = (( (insn & 0x000ffe) << 8)
- | ((insn & 0x00c000) >> 7)
- | ((insn & 0x1f0000) >> 14)
- | ((insn & 0x003000) >> 12)) - ((insn & 1) << 20);
- imm <<= 11;
- imm = imm & ~ 0x3fffff;
-#else
- /* Just pick off the 10 needed bits, ensuring we sign extend. */
- imm = ((insn & 0x000ff8) << 19) - ((insn & 1) << 31);
-#endif
- r_addend = imm | (r_addend & 0x3fffff);
- break;
+ stub_name = hppa_stub_name (input_section, sym_sec, hash, rel);
+ if (stub_name == NULL)
+ return NULL;
- default:
- break;
+ stub_hash_table = &hppa_link_hash_table (info)->stub_hash_table;
+
+ stub_entry = hppa_stub_hash_lookup (stub_hash_table, stub_name,
+ false, false);
+ if (stub_entry == NULL)
+ {
+ if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak)
+ (*_bfd_error_handler) (_("%s(%s+0x%lx): cannot find stub entry %s"),
+ bfd_get_filename (input_section->owner),
+ input_section->name,
+ (long) rel->r_offset,
+ stub_name);
+ }
+ else
+ {
+ if (hash != NULL)
+ hash->stub_cache = stub_entry;
+ }
+
+ free (stub_name);
}
+
+ return stub_entry;
+}
+
+
+/* Add a new stub entry to the stub hash. Not all fields of the new
+ stub entry are initialised. */
+
+static struct elf32_hppa_stub_hash_entry *
+hppa_add_stub (stub_name, section, sec_count, info)
+ const char *stub_name;
+ asection *section;
+ unsigned int sec_count;
+ struct bfd_link_info *info;
+{
+ asection *stub_sec;
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ asection *reloc_sec;
#endif
-#endif
+ struct elf32_hppa_stub_hash_entry *stub_entry;
+ struct elf32_hppa_link_hash_table *hplink;
- switch (r_type)
+ hplink = hppa_link_hash_table (info);
+ stub_sec = hplink->stub_section_created[sec_count];
+ if (stub_sec == NULL)
{
- case R_PARISC_PCREL21L:
- case R_PARISC_PCREL17C:
- case R_PARISC_PCREL17F:
- case R_PARISC_PCREL17R:
- case R_PARISC_PCREL14R:
- /* Adjust PC relative offset. */
- r_addend -= 8;
- break;
- default:
- break;
+ int special_sec = 0;
+
+ /* We only want one stub for .init and .fini because glibc
+ splits the _init and _fini functions into two parts. We
+ don't want to put a stub in the middle of a function.
+ It would be better to merge all the stub sections for an
+ output section if the output section + stubs is small enough.
+ This would fix the .init and .fini case and also allow stubs
+ to be merged. It's more linker work though. */
+ if (strncmp (section->name, ".init", 5) == 0)
+ {
+ stub_sec = hplink->stub_section_created[hplink->first_init_sec];
+ special_sec = 1;
+ }
+ else if (strncmp (section->name, ".fini", 5) == 0)
+ {
+ stub_sec = hplink->stub_section_created[hplink->first_fini_sec];
+ special_sec = 2;
+ }
+ if (stub_sec == NULL)
+ {
+ int len;
+ char *s_name;
+
+ len = strlen (section->name) + sizeof (STUB_SUFFIX);
+ s_name = bfd_alloc (hplink->stub_bfd, len);
+ if (s_name == NULL)
+ return NULL;
+
+ strcpy (s_name, section->name);
+ strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX);
+ stub_sec = (*hplink->add_stub_section) (s_name, section);
+ if (stub_sec == NULL)
+ return NULL;
+
+ if (special_sec != 0)
+ {
+ if (special_sec == 1)
+ hplink->first_init_sec = sec_count;
+ else
+ hplink->first_fini_sec = sec_count;
+ }
+ }
+ hplink->stub_section_created[sec_count] = stub_sec;
}
- value = hppa_field_adjust (sym_value, r_addend, r_field);
- switch (r_type)
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ reloc_sec = hplink->reloc_section_created[sec_count];
+ if (reloc_sec == NULL && info->shared)
{
- case R_PARISC_PCREL17C:
- case R_PARISC_PCREL17F:
- case R_PARISC_PCREL17R:
- case R_PARISC_DIR17F:
- case R_PARISC_DIR17R:
- /* This is a branch. Divide the offset by four.
- Note that we need to decide whether it's a branch or
- otherwise by inspecting the reloc. Inspecting insn won't
- work as insn might be from a .word directive. */
- value >>= 2;
- break;
+ char *name;
+
+ name = bfd_malloc (sizeof ".rela" + strlen (stub_sec->name));
+ if (name == NULL)
+ return NULL;
+ strcpy (name, ".rela");
+ strcpy (name + sizeof ".rela" - 1, stub_sec->name);
+ reloc_sec = bfd_get_section_by_name (elf_hash_table (info)->dynobj,
+ name);
+ hplink->reloc_section_created[sec_count] = reloc_sec;
+ free (name);
+ }
+#endif
- default:
- break;
+ /* Enter this entry into the linker stub hash table. */
+ stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, stub_name,
+ true, false);
+ if (stub_entry == NULL)
+ {
+ (*_bfd_error_handler) (_("%s: cannot create stub entry %s"),
+ bfd_get_filename (section->owner),
+ stub_name);
+ return NULL;
}
- return hppa_rebuild_insn (insn, value, r_format);
+ stub_entry->stub_sec = stub_sec;
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ stub_entry->reloc_sec = reloc_sec;
+#endif
+ stub_entry->stub_offset = 0;
+ stub_entry->input_section = section;
+ return stub_entry;
}
-/* Actually perform a relocation as part of a final link. This can get
- rather hairy when linker stubs are needed. */
-static bfd_reloc_status_type
-elf32_hppa_bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, offset, value, addend,
- info, sym_sec, sym_name, h)
- reloc_howto_type *howto;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- bfd_vma offset;
- bfd_vma value;
- bfd_signed_vma addend;
- struct bfd_link_info *info;
- asection *sym_sec;
- const char *sym_name;
- struct elf_link_hash_entry *h;
+/* Determine the type of stub needed, if any, for a call. */
+
+static enum elf32_hppa_stub_type
+hppa_type_of_stub (input_sec, rel, hash, destination)
+ asection *input_sec;
+ const Elf_Internal_Rela *rel;
+ struct elf32_hppa_link_hash_entry *hash;
+ bfd_vma destination;
{
- int insn;
- unsigned int r_type = howto->type;
- int r_format = howto->bitsize;
- enum hppa_reloc_field_selector_type_alt r_field = e_fsel;
- bfd_byte *hit_data = contents + offset;
bfd_vma location;
+ bfd_vma branch_offset;
+ bfd_vma max_branch_offset;
+ unsigned int r_type;
+
+ if (hash != NULL
+ && (((hash->elf.root.type == bfd_link_hash_defined
+ || hash->elf.root.type == bfd_link_hash_defweak)
+ && hash->elf.root.u.def.section->output_section == NULL)
+ || hash->elf.root.type == bfd_link_hash_undefweak
+ || hash->elf.root.type == bfd_link_hash_undefined
+ || hash->pic_call))
+ {
+ /* If output_section is NULL, then it's a symbol defined in a
+ shared library. We will need an import stub. Decide between
+ hppa_stub_import and hppa_stub_import_shared later.
+ For shared links we need stubs for undefined syms too; They
+ will presumably be resolved by the dynamic linker. */
+ return hppa_stub_import;
+ }
- if (r_type == R_PARISC_NONE)
- return bfd_reloc_ok;
-
- insn = bfd_get_32 (input_bfd, hit_data);
+ /* Determine where the call point is. */
+ location = (input_sec->output_offset
+ + input_sec->output_section->vma
+ + rel->r_offset);
- /* Find out where we are and where we're going. */
- location = (offset +
- input_section->output_offset +
- input_section->output_section->vma);
+ branch_offset = destination - location - 8;
+ r_type = ELF32_R_TYPE (rel->r_info);
- switch (r_type)
+ /* Determine if a long branch stub is needed. parisc branch offsets
+ are relative to the second instruction past the branch, ie. +8
+ bytes on from the branch instruction location. The offset is
+ signed and counts in units of 4 bytes. */
+ if (r_type == (unsigned int) R_PARISC_PCREL17F)
{
- case R_PARISC_PCREL21L:
- case R_PARISC_PCREL17C:
- case R_PARISC_PCREL17F:
- case R_PARISC_PCREL17R:
- case R_PARISC_PCREL14R:
- /* Make it a pc relative offset. */
- value -= location;
- break;
- default:
- break;
+ max_branch_offset = (1 << (17-1)) << 2;
+ }
+ else if (r_type == (unsigned int) R_PARISC_PCREL12F)
+ {
+ max_branch_offset = (1 << (12-1)) << 2;
+ }
+ else /* R_PARISC_PCREL22F */
+ {
+ max_branch_offset = (1 << (22-1)) << 2;
}
- switch (r_type)
+ if (branch_offset + max_branch_offset >= 2*max_branch_offset)
{
- case R_PARISC_DIR32:
- case R_PARISC_DIR17F:
- case R_PARISC_PCREL17C:
- r_field = e_fsel;
- break;
+#if 0
+ if (hash != NULL
+ && hash->elf.dynindx != -1
+ && hash->elf.plt.offset != (bfd_vma) -1)
+ {
+ /* If we are doing a shared link and find we need a long
+ branch stub, then go via the .plt if possible. */
+ return hppa_stub_import;
+ }
+ else
+#endif
+ return hppa_stub_long_branch;
+ }
+ return hppa_stub_none;
+}
- case R_PARISC_DIR21L:
- case R_PARISC_PCREL21L:
- r_field = e_lrsel;
- break;
- case R_PARISC_DIR17R:
- case R_PARISC_PCREL17R:
- case R_PARISC_DIR14R:
- case R_PARISC_PCREL14R:
- r_field = e_rrsel;
- break;
+/* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
+ IN_ARG contains the link info pointer. */
- /* For all the DP relative relocations, we need to examine the symbol's
- section. If it's a code section, then "data pointer relative" makes
- no sense. In that case we don't adjust the "value", and for 21 bit
- addil instructions, we change the source addend register from %dp to
- %r0. */
- case R_PARISC_DPREL21L:
- r_field = e_lrsel;
- if (sym_sec != NULL)
- {
- if ((sym_sec->flags & SEC_CODE) != 0)
- {
- if ((insn & ((0x3f << 26) | (0x1f << 21)))
- == (((int) OP_ADDIL << 26) | (27 << 21)))
- {
- insn &= ~ (0x1f << 21);
- }
- }
- else
- value -= elf32_hppa_hash_table (info)->global_value;
- }
- break;
+#define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
+#define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
- case R_PARISC_DPREL14R:
- r_field = e_rrsel;
- if (sym_sec != NULL && (sym_sec->flags & SEC_CODE) == 0)
- value -= elf32_hppa_hash_table (info)->global_value;
- break;
+#define BL_R1 0xe8200000 /* b,l .+8,%r1 */
+#define ADDIL_R1 0x28200000 /* addil L'XXX,%r1,%r1 */
+#define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
- case R_PARISC_DPREL14F:
- r_field = e_fsel;
- if (sym_sec != NULL && (sym_sec->flags & SEC_CODE) == 0)
- value -= elf32_hppa_hash_table (info)->global_value;
- break;
+#define ADDIL_DP 0x2b600000 /* addil L'XXX,%dp,%r1 */
+#define LDW_R1_R21 0x48350000 /* ldw R'XXX(%sr0,%r1),%r21 */
+#define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
+#define LDW_R1_R19 0x48330000 /* ldw R'XXX(%sr0,%r1),%r19 */
- case R_PARISC_PLABEL32:
- r_field = e_fsel;
- break;
+#define ADDIL_R19 0x2a600000 /* addil L'XXX,%r19,%r1 */
+#define LDW_R1_DP 0x483b0000 /* ldw R'XXX(%sr0,%r1),%dp */
- case R_PARISC_PLABEL21L:
- r_field = e_lrsel;
- break;
+#define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */
+#define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */
+#define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */
+#define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */
- case R_PARISC_PLABEL14R:
- r_field = e_rrsel;
- break;
+#define BL_RP 0xe8400002 /* b,l,n XXX,%rp */
+#define NOP 0x08000240 /* nop */
+#define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */
+#define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */
+#define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */
- /* This case is separate as it may involve a lot more work
- to deal with linker stubs. */
- case R_PARISC_PCREL17F:
- r_field = e_fsel;
+#ifndef R19_STUBS
+#define R19_STUBS 1
+#endif
- /* bfd_link_hash_undefweak symbols have sym_sec == NULL. */
- if (sym_sec == NULL)
- break;
+#if R19_STUBS
+#define LDW_R1_DLT LDW_R1_R19
+#else
+#define LDW_R1_DLT LDW_R1_DP
+#endif
- /* Any kind of linker stub needed? */
- /* bfd_vma value is unsigned, so this is testing for offsets
- outside the range -0x40000 to +0x3ffff */
- if (value + addend - 8 + 0x40000 >= 0x80000)
- {
- struct bfd_hash_table *stub_hash_table;
- struct elf32_hppa_stub_hash_entry *stub_entry;
- char *stub_name;
+static boolean
+hppa_build_one_stub (gen_entry, in_arg)
+ struct bfd_hash_entry *gen_entry;
+ PTR in_arg;
+{
+ struct elf32_hppa_stub_hash_entry *stub_entry;
+ struct bfd_link_info *info;
+ struct elf32_hppa_link_hash_table *hplink;
+ asection *stub_sec;
+ bfd *stub_bfd;
+ bfd_byte *loc;
+ bfd_vma sym_value;
+ unsigned int insn;
+ int size;
- stub_name = elf32_hppa_stub_name (sym_name, sym_sec,
- input_section, addend, h);
- if (!stub_name)
- {
- (*_bfd_error_handler) ("%s: %s",
- bfd_get_filename (input_bfd),
- bfd_errmsg (bfd_get_error ()));
- return bfd_reloc_notsupported;
- }
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
+ info = (struct bfd_link_info *) in_arg;
+
+ hplink = hppa_link_hash_table (info);
+ stub_sec = stub_entry->stub_sec;
- stub_hash_table = &elf32_hppa_hash_table (info)->stub_hash_table;
+ /* Make a note of the offset within the stubs for this entry. */
+ stub_entry->stub_offset = hplink->offset[stub_sec->index];
+ loc = stub_sec->contents + stub_entry->stub_offset;
- stub_entry = elf32_hppa_stub_hash_lookup (stub_hash_table,
- stub_name,
- false,
- false);
- if (stub_entry == NULL)
+ stub_bfd = stub_sec->owner;
+
+ switch (stub_entry->stub_type)
+ {
+ case hppa_stub_long_branch:
+ /* Create the long branch. A long branch is formed with "ldil"
+ loading the upper bits of the target address into a register,
+ then branching with "be" which adds in the lower bits.
+ The "be" has its delay slot nullified. */
+ sym_value = (stub_entry->target_value
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
+
+ insn = hppa_rebuild_insn ((int) LDIL_R1,
+ hppa_field_adjust (sym_value, 0, e_lrsel),
+ 21);
+ bfd_put_32 (stub_bfd, insn, loc);
+
+ insn = hppa_rebuild_insn ((int) BE_SR4_R1,
+ hppa_field_adjust (sym_value, 0, e_rrsel) >> 2,
+ 17);
+ bfd_put_32 (stub_bfd, insn, loc + 4);
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ if (info->shared)
+ {
+ /* Output a dynamic relocation for this stub. We only
+ output one PCREL21L reloc per stub, trusting that the
+ dynamic linker will also fix the implied PCREL17R for the
+ second instruction. PCREL21L dynamic relocs had better
+ never be emitted for some other purpose... */
+ asection *srel;
+ Elf_Internal_Rela outrel;
+
+ if (stub_entry->h == NULL)
{
(*_bfd_error_handler)
- (_("%s: cannot find stub entry %s"),
- bfd_get_filename (input_bfd),
- stub_name);
- free (stub_name);
- return bfd_reloc_notsupported;
+ (_("%s(%s+0x%lx): cannot relocate %s, recompile with -ffunction-sections"),
+ bfd_get_filename (stub_entry->target_section->owner),
+ stub_sec->name,
+ (long) stub_entry->stub_offset,
+ stub_entry->root.string);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
}
- /* Munge up the value and addend for elf32_hppa_relocate_insn. */
- value = (stub_entry->offset
- + stub_entry->stub_sec->output_offset
- + stub_entry->stub_sec->output_section->vma
- - location);
- addend = 0;
-
- if (value + addend - 8 + 0x40000 >= 0x80000)
+ srel = stub_entry->reloc_sec;
+ if (srel == NULL)
{
(*_bfd_error_handler)
- (_("%s: cannot reach stub %s, recompile with -ffunction-sections"),
- bfd_get_filename (input_bfd),
- stub_name);
- free (stub_name);
- return bfd_reloc_notsupported;
+ (_("Could not find relocation section for %s"),
+ stub_sec->name);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
}
- free (stub_name);
+ outrel.r_offset = (stub_entry->stub_offset
+ + stub_sec->output_offset
+ + stub_sec->output_section->vma);
+ outrel.r_info = ELF32_R_INFO (0, R_PARISC_PCREL21L);
+ outrel.r_addend = sym_value;
+ bfd_elf32_swap_reloca_out (stub_sec->output_section->owner,
+ &outrel,
+ ((Elf32_External_Rela *)
+ srel->contents + srel->reloc_count));
+ ++srel->reloc_count;
}
+#endif
+ size = 8;
break;
- /* Something we don't know how to handle. */
- default:
- return bfd_reloc_notsupported;
- }
-
- /* bfd_link_hash_undefweak symbols have sym_sec == NULL. */
- if (sym_sec == NULL)
- {
- BFD_ASSERT (h != NULL && h->root.type == bfd_link_hash_undefweak);
- value = 0;
- }
+ case hppa_stub_long_branch_shared:
+ /* Branches are relative. This is where we are going to. */
+ sym_value = (stub_entry->target_value
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
+
+ /* And this is where we are coming from, more or less. */
+ sym_value -= (stub_entry->stub_offset
+ + stub_sec->output_offset
+ + stub_sec->output_section->vma);
+
+ bfd_put_32 (stub_bfd, (unsigned int) BL_R1, loc);
+ insn = hppa_rebuild_insn ((int) ADDIL_R1,
+ hppa_field_adjust (sym_value, -8, e_lsel),
+ 21);
+ bfd_put_32 (stub_bfd, insn, loc + 4);
+
+ insn = hppa_rebuild_insn ((int) BE_SR4_R1,
+ hppa_field_adjust (sym_value, -8, e_rsel) >> 2,
+ 17);
+ bfd_put_32 (stub_bfd, insn, loc + 8);
+ size = 12;
+ break;
- insn = elf32_hppa_relocate_insn (insn, value, addend,
- r_type, r_format, r_field);
+ case hppa_stub_import:
+ case hppa_stub_import_shared:
+ sym_value = (stub_entry->h->elf.plt.offset
+ + hplink->splt->output_offset
+ + hplink->splt->output_section->vma
+ - elf_gp (hplink->splt->output_section->owner));
+
+ insn = ADDIL_DP;
+#if R19_STUBS
+ if (stub_entry->stub_type == hppa_stub_import_shared)
+ insn = ADDIL_R19;
+#endif
+ insn = hppa_rebuild_insn ((int) insn,
+ hppa_field_adjust (sym_value, 0, e_lsel),
+ 21);
+ bfd_put_32 (stub_bfd, insn, loc);
- /* Update the instruction word. */
- bfd_put_32 (input_bfd, insn, hit_data);
- return bfd_reloc_ok;
-}
+ insn = hppa_rebuild_insn ((int) LDW_R1_R21,
+ hppa_field_adjust (sym_value, 0, e_rsel),
+ 14);
+ bfd_put_32 (stub_bfd, insn, loc + 4);
-/* Relocate an HPPA ELF section. */
+ if (hplink->multi_subspace)
+ {
+ insn = hppa_rebuild_insn ((int) LDW_R1_DLT,
+ hppa_field_adjust (sym_value, 4, e_rsel),
+ 14);
+ bfd_put_32 (stub_bfd, insn, loc + 8);
-static boolean
-elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
- contents, relocs, local_syms, local_sections)
- bfd *output_bfd ATTRIBUTE_UNUSED;
- struct bfd_link_info *info;
- bfd *input_bfd;
- asection *input_section;
- bfd_byte *contents;
- Elf_Internal_Rela *relocs;
- Elf_Internal_Sym *local_syms;
- asection **local_sections;
-{
- Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Rela *rel;
- Elf_Internal_Rela *relend;
+ bfd_put_32 (stub_bfd, (unsigned int) LDSID_R21_R1, loc + 12);
+ bfd_put_32 (stub_bfd, (unsigned int) MTSP_R1, loc + 16);
+ bfd_put_32 (stub_bfd, (unsigned int) BE_SR0_R21, loc + 20);
+ bfd_put_32 (stub_bfd, (unsigned int) STW_RP, loc + 24);
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ size = 28;
+ }
+ else
+ {
+ bfd_put_32 (stub_bfd, (unsigned int) BV_R0_R21, loc + 8);
+ insn = hppa_rebuild_insn ((int) LDW_R1_DLT,
+ hppa_field_adjust (sym_value, 4, e_rsel),
+ 14);
+ bfd_put_32 (stub_bfd, insn, loc + 12);
- rel = relocs;
- relend = relocs + input_section->reloc_count;
- for (; rel < relend; rel++)
- {
- unsigned int r_type;
- reloc_howto_type *howto;
- unsigned int r_symndx;
- struct elf_link_hash_entry *h;
- Elf_Internal_Sym *sym;
- asection *sym_sec;
- bfd_vma relocation;
- bfd_reloc_status_type r;
- const char *sym_name;
+ size = 16;
+ }
- r_type = ELF32_R_TYPE (rel->r_info);
- if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
+ if (!info->shared
+ && stub_entry->h != NULL
+ && stub_entry->h->pic_call)
{
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- howto = elf_hppa_howto_table + r_type;
+ /* Build the .plt entry needed to call a PIC function from
+ statically linked code. We don't need any relocs. */
+ bfd *dynobj;
+ struct elf32_hppa_link_hash_entry *eh;
+ bfd_vma value;
- r_symndx = ELF32_R_SYM (rel->r_info);
+ dynobj = elf_hash_table (info)->dynobj;
+ eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h;
- if (info->relocateable)
- {
- /* This is a relocateable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sym_sec = local_sections[r_symndx];
- rel->r_addend += sym_sec->output_offset;
- }
- }
+ BFD_ASSERT (eh->elf.root.type == bfd_link_hash_defined
+ || eh->elf.root.type == bfd_link_hash_defweak);
- continue;
- }
+ value = (eh->elf.root.u.def.value
+ + eh->elf.root.u.def.section->output_offset
+ + eh->elf.root.u.def.section->output_section->vma);
- /* This is a final link. */
- h = NULL;
- sym = NULL;
- sym_sec = NULL;
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- sym_sec = local_sections[r_symndx];
- relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION
- ? 0 : sym->st_value)
- + sym_sec->output_offset
- + sym_sec->output_section->vma);
- }
- else
- {
- int indx;
+ /* Fill in the entry in the procedure linkage table.
- indx = r_symndx - symtab_hdr->sh_info;
- h = elf_sym_hashes (input_bfd)[indx];
- 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 (h->root.type == bfd_link_hash_defined
- || h->root.type == bfd_link_hash_defweak)
- {
- sym_sec = h->root.u.def.section;
- relocation = (h->root.u.def.value
- + sym_sec->output_offset
- + sym_sec->output_section->vma);
- }
- else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else
- {
- if (!((*info->callbacks->undefined_symbol)
- (info, h->root.root.string, input_bfd,
- input_section, rel->r_offset, true)))
- return false;
- break;
- }
- }
+ The format of a plt entry is
+ <funcaddr> <__gp>. */
- if (h != NULL)
- sym_name = h->root.root.string;
- else
- {
- sym_name = bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- if (sym_name == NULL)
- return false;
- if (*sym_name == '\0')
- sym_name = bfd_section_name (input_bfd, sym_sec);
+ bfd_put_32 (hplink->splt->owner, value,
+ hplink->splt->contents + eh->elf.plt.offset);
+ value = elf_gp (hplink->splt->output_section->owner);
+ bfd_put_32 (hplink->splt->owner, value,
+ hplink->splt->contents + eh->elf.plt.offset + 4);
}
+ break;
- r = elf32_hppa_bfd_final_link_relocate (howto, input_bfd,
- input_section, contents,
- rel->r_offset, relocation,
- rel->r_addend, info, sym_sec,
- sym_name, h);
+ case hppa_stub_export:
+ /* Branches are relative. This is where we are going to. */
+ sym_value = (stub_entry->target_value
+ + stub_entry->target_section->output_offset
+ + stub_entry->target_section->output_section->vma);
- switch (r)
- {
- case bfd_reloc_ok:
- break;
+ /* And this is where we are coming from. */
+ sym_value -= (stub_entry->stub_offset
+ + stub_sec->output_offset
+ + stub_sec->output_section->vma);
- case bfd_reloc_undefined:
- case bfd_reloc_notsupported:
+ if (sym_value - 8 + 0x40000 >= 0x80000)
+ {
(*_bfd_error_handler)
- (_("%s: cannot handle relocation %s for %s at 0x%x in %s"),
- bfd_get_filename (input_bfd),
- howto->name,
- sym_name,
- rel->r_offset,
- input_section->name);
+ (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
+ bfd_get_filename (stub_entry->target_section->owner),
+ stub_sec->name,
+ (long) stub_entry->stub_offset,
+ stub_entry->root.string);
+ bfd_set_error (bfd_error_bad_value);
return false;
-
- default:
- case bfd_reloc_outofrange:
- case bfd_reloc_overflow:
- {
- if (!((*info->callbacks->reloc_overflow)
- (info, sym_name, howto->name, (bfd_vma) 0,
- input_bfd, input_section, rel->r_offset)))
- return false;
- }
- break;
}
+
+ insn = hppa_rebuild_insn ((int) BL_RP,
+ hppa_field_adjust (sym_value, -8, e_fsel) >> 2,
+ 17);
+ bfd_put_32 (stub_bfd, insn, loc);
+
+ bfd_put_32 (stub_bfd, (unsigned int) NOP, loc + 4);
+ bfd_put_32 (stub_bfd, (unsigned int) LDW_RP, loc + 8);
+ bfd_put_32 (stub_bfd, (unsigned int) LDSID_RP_R1, loc + 12);
+ bfd_put_32 (stub_bfd, (unsigned int) MTSP_R1, loc + 16);
+ bfd_put_32 (stub_bfd, (unsigned int) BE_SR0_RP, loc + 20);
+
+ /* Point the function symbol at the stub. */
+ stub_entry->h->elf.root.u.def.section = stub_sec;
+ stub_entry->h->elf.root.u.def.value = hplink->offset[stub_sec->index];
+
+ size = 24;
+ break;
+
+ default:
+ BFD_FAIL ();
+ return false;
}
+ hplink->offset[stub_sec->index] += size;
return true;
}
-/* Called after we have seen all the input files/sections, but before
- final symbol resolution and section placement has been determined.
+#undef LDIL_R1
+#undef BE_SR4_R1
+#undef BL_R1
+#undef ADDIL_R1
+#undef DEPI_R1
+#undef ADDIL_DP
+#undef LDW_R1_R21
+#undef LDW_R1_DLT
+#undef LDW_R1_R19
+#undef ADDIL_R19
+#undef LDW_R1_DP
+#undef LDSID_R21_R1
+#undef MTSP_R1
+#undef BE_SR0_R21
+#undef STW_RP
+#undef BV_R0_R21
+#undef BL_RP
+#undef NOP
+#undef LDW_RP
+#undef LDSID_RP_R1
+#undef BE_SR0_RP
- We use this hook to (possibly) provide a value for __gp, then we
- fall back to the generic ELF final link routine. */
-boolean
-elf32_hppa_final_link (abfd, info)
- bfd *abfd;
- struct bfd_link_info *info;
+/* As above, but don't actually build the stub. Just bump offset so
+ we know stub section sizes. */
+
+static boolean
+hppa_size_one_stub (gen_entry, in_arg)
+ struct bfd_hash_entry *gen_entry;
+ PTR in_arg;
{
- if (!info->relocateable)
+ struct elf32_hppa_stub_hash_entry *stub_entry;
+ struct elf32_hppa_link_hash_table *hplink;
+ int size;
+
+ /* Massage our args to the form they really have. */
+ stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
+ hplink = (struct elf32_hppa_link_hash_table *) in_arg;
+
+ if (stub_entry->stub_type == hppa_stub_long_branch)
+ size = 8;
+ else if (stub_entry->stub_type == hppa_stub_long_branch_shared)
+ size = 12;
+ else if (stub_entry->stub_type == hppa_stub_export)
+ size = 24;
+ else /* hppa_stub_import or hppa_stub_import_shared */
{
- struct elf_link_hash_entry *h;
- asection *sec;
- bfd_vma gp_val;
+ if (hplink->multi_subspace)
+ size = 28;
+ else
+ size = 16;
+ }
- h = elf_link_hash_lookup (elf_hash_table (info), "$global$",
- false, false, false);
+ hplink->offset[stub_entry->stub_sec->index] += size;
+ return true;
+}
- if (h != NULL
- && h->root.type == bfd_link_hash_defined)
- {
- gp_val = h->root.u.def.value;
- sec = h->root.u.def.section;
- }
- else
- {
- /* If $global$ isn't defined, we could make one up ourselves
- from the start of .plt, .dlt, or .data For the time
- being, just bomb. */
- (*info->callbacks->undefined_symbol)
- (info, "$global$", abfd, NULL, 0, true);
- return false;
- }
- elf32_hppa_hash_table (info)->global_value = (gp_val
- + sec->output_section->vma
- + sec->output_offset);
- }
+/* Return nonzero if ABFD represents an HPPA ELF32 file.
+ Additionally we set the default architecture and machine. */
+
+static boolean
+elf32_hppa_object_p (abfd)
+ bfd *abfd;
+{
+ unsigned int flags = elf_elfheader (abfd)->e_flags;
- /* Invoke the standard linker. */
- return bfd_elf_bfd_final_link (abfd, info);
+ switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE))
+ {
+ case EFA_PARISC_1_0:
+ return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10);
+ case EFA_PARISC_1_1:
+ return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11);
+ case EFA_PARISC_2_0:
+ return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20);
+ case EFA_PARISC_2_0 | EF_PARISC_WIDE:
+ return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25);
+ }
+ return true;
}
+
/* Undo the generic ELF code's subtraction of section->vma from the
value of each external symbol. */
return true;
}
-/* Compute the size of the stub needed to call from INPUT_SEC (OFFSET)
- to DESTINATION. Return zero if no stub is needed to perform such a
- call. */
-static unsigned int
-elf32_hppa_size_of_stub (input_sec, offset, destination)
- asection *input_sec;
- bfd_vma offset;
- bfd_vma destination;
+/* Create the .plt and .got sections, and set up our hash table
+ short-cuts to various dynamic sections. */
+
+static boolean
+elf32_hppa_create_dynamic_sections (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
{
- bfd_vma location;
+ flagword flags;
+ asection *s;
+ struct elf32_hppa_link_hash_table *hplink;
- /* Determine where the call point is. */
- location = (input_sec->output_offset
- + input_sec->output_section->vma
- + offset);
+ /* Don't try to create the .plt and .got twice. */
+ hplink = hppa_link_hash_table (info);
+ if (hplink->splt != NULL)
+ return true;
- /* Determine if a long branch stub is needed. parisc branch offsets
- are relative to the second instruction past the branch, ie. +8
- bytes on from the branch instruction location. The offset is
- signed, 17 bits wide, and counts in units of 4 bytes.
- bfd_vma is unsigned, so this is testing for offsets outside the
- range -0x40000 to +0x3ffff */
- if (destination - location - 8 + 0x40000 >= 0x80000)
- return 8;
- return 0;
-}
+ /* Call the generic code to do most of the work. */
+ if (! _bfd_elf_create_dynamic_sections (abfd, info))
+ return false;
-/* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
- IN_ARG contains the link info pointer. */
+ /* Our .plt just contains pointers. I suppose we should be using
+ .plt.got but .plt.got doesn't make too much sense without a .plt
+ section. Set the flags to say the .plt isn't executable. */
+ s = bfd_get_section_by_name (abfd, ".plt");
+ flags = bfd_get_section_flags (abfd, s);
+ if (! bfd_set_section_flags (abfd, s, flags & ~SEC_CODE))
+ return false;
+ hplink->splt = s;
+ hplink->srelplt = bfd_get_section_by_name (abfd, ".rela.plt");
+
+ hplink->sgot = bfd_get_section_by_name (abfd, ".got");
+ hplink->srelgot = bfd_make_section (abfd, ".rela.got");
+ if (hplink->srelgot == NULL
+ || ! bfd_set_section_flags (abfd, hplink->srelgot,
+ (SEC_ALLOC
+ | SEC_LOAD
+ | SEC_HAS_CONTENTS
+ | SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
+ | SEC_READONLY))
+ || ! bfd_set_section_alignment (abfd, hplink->srelgot, 2))
+ return false;
-#define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
-#define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
+ hplink->sdynbss = bfd_get_section_by_name (abfd, ".dynbss");
+ hplink->srelbss = bfd_get_section_by_name (abfd, ".rela.bss");
+
+ return true;
+}
+
+
+/* Look through the relocs for a section during the first phase, and
+ allocate space in the global offset table or procedure linkage
+ table. At this point we haven't necessarily read all the input
+ files. */
static boolean
-elf32_hppa_build_one_stub (gen_entry, in_arg)
- struct bfd_hash_entry *gen_entry;
- PTR in_arg;
+elf32_hppa_check_relocs (abfd, info, sec, relocs)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec;
+ const Elf_Internal_Rela *relocs;
{
- struct elf32_hppa_stub_hash_entry *stub_entry;
- struct elf32_hppa_link_hash_table *hppa_link_hash;
- asection *stub_sec;
- bfd *stub_bfd;
- bfd_byte *loc;
- symvalue sym_value;
- int insn;
+ bfd *dynobj;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ bfd_signed_vma *local_got_refcounts;
+ const Elf_Internal_Rela *rel;
+ const Elf_Internal_Rela *rel_end;
+ struct elf32_hppa_link_hash_table *hplink;
+ asection *sreloc;
+ asection *stubreloc;
+
+ if (info->relocateable)
+ return true;
+
+ hplink = hppa_link_hash_table (info);
+ dynobj = elf_hash_table (info)->dynobj;
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
+ sreloc = NULL;
+ stubreloc = NULL;
+
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
+ {
+ enum {
+ NEED_GOT = 1,
+ NEED_PLT = 2,
+ NEED_DYNREL = 4,
+#if LONG_BRANCH_PIC_IN_SHLIB
+ NEED_STUBREL = 0 /* We won't be needing them in this case. */
+#else
+ NEED_STUBREL = 8
+#endif
+ };
- /* Massage our args to the form they really have. */
- stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
- hppa_link_hash = (struct elf32_hppa_link_hash_table *) in_arg;
+ unsigned int r_symndx, r_type;
+ struct elf32_hppa_link_hash_entry *h;
+ int need_entry;
- stub_sec = stub_entry->stub_sec;
+ r_symndx = ELF32_R_SYM (rel->r_info);
- /* Make a note of the offset within the stubs for this entry. */
- stub_entry->offset = hppa_link_hash->offset[stub_sec->index];
- loc = stub_sec->contents + stub_entry->offset;
+ if (r_symndx < symtab_hdr->sh_info)
+ h = NULL;
+ else
+ h = ((struct elf32_hppa_link_hash_entry *)
+ sym_hashes[r_symndx - symtab_hdr->sh_info]);
- sym_value = (stub_entry->target_value
- + stub_entry->target_section->output_offset
- + stub_entry->target_section->output_section->vma);
+ r_type = ELF32_R_TYPE (rel->r_info);
- stub_bfd = stub_sec->owner;
+ switch (r_type)
+ {
+ case R_PARISC_DLTIND14F:
+ case R_PARISC_DLTIND14R:
+ case R_PARISC_DLTIND21L:
+ /* This symbol requires a global offset table entry. */
+ need_entry = NEED_GOT;
+
+ /* Mark this section as containing PIC code. */
+ sec->flags |= SEC_HAS_GOT_REF;
+ break;
+
+ case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
+ case R_PARISC_PLABEL21L:
+ case R_PARISC_PLABEL32:
+ if (h == NULL)
+ {
+ /* If this is a local symbol we do not need to create a
+ PLT entry, but if we are creating a shared object we
+ have to output a relocation for the PLABEL itself. */
+ need_entry = NEED_DYNREL;
+ }
+ else
+ {
+ /* If it is a global symbol, then we do need to create a
+ PLT entry, and additionally, if we are creating a
+ shared object, we need to output a dynamic relocation
+ pointing to that PLT entry. */
+ need_entry = NEED_PLT | NEED_DYNREL;
+ }
+ break;
+
+ case R_PARISC_PCREL12F:
+ case R_PARISC_PCREL17C:
+ case R_PARISC_PCREL17F:
+ case R_PARISC_PCREL22F:
+ /* Handle calls, and function pointers as they might need to
+ go through the .plt, and might require long branch stubs. */
+ if (h == NULL)
+ {
+ /* We know local syms won't need a .plt entry, and if
+ they need a long branch stub we can't guarantee that
+ we can reach the stub. So just flag an error later
+ if we're doing a shared link and find we need a long
+ branch stub. */
+ continue;
+ }
+ else
+ {
+ /* Global symbols will need a .plt entry if they remain
+ global, and in most cases won't need a long branch
+ stub. Unfortunately, we have to cater for the case
+ where a symbol is forced local by versioning, or due
+ to symbolic linking, and we lose the .plt entry. */
+ need_entry = NEED_PLT | NEED_STUBREL;
+ }
+ break;
+
+ case R_PARISC_SEGBASE: /* Used to set segment base. */
+ case R_PARISC_SEGREL32: /* Relative reloc. */
+ case R_PARISC_PCREL14F: /* PC relative load/store. */
+ case R_PARISC_PCREL14R:
+ case R_PARISC_PCREL17R: /* External branches. */
+ case R_PARISC_PCREL21L: /* As above, and for load/store too. */
+ /* We don't need to propagate the relocation if linking a
+ shared object since these are section relative. */
+ continue;
+
+ case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */
+ case R_PARISC_DPREL14R:
+ case R_PARISC_DPREL21L:
+ if (info->shared)
+ {
+ (*_bfd_error_handler)
+ (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"),
+ bfd_get_filename (abfd),
+ elf_hppa_howto_table[r_type].name);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ /* Fall through. */
+
+ case R_PARISC_DIR17F: /* Used for external branches. */
+ case R_PARISC_DIR17R:
+ case R_PARISC_DIR14R: /* Used for load/store from absolute locn. */
+ case R_PARISC_DIR21L: /* As above, and for ext branches too. */
+#if 1
+ /* Help debug shared library creation. Any of the above
+ relocs can be used in shared libs, but they may cause
+ pages to become unshared. */
+ if (info->shared)
+ {
+ (*_bfd_error_handler)
+ (_("%s: relocation %s should not be used when making a shared object; recompile with -fPIC"),
+ bfd_get_filename (abfd),
+ elf_hppa_howto_table[r_type].name);
+ }
+ /* Fall through. */
+#endif
+
+ case R_PARISC_DIR32: /* .word, PARISC.unwind relocs. */
+ /* We may want to output a dynamic relocation later. */
+ need_entry = NEED_DYNREL;
+ break;
+
+ /* This relocation describes the C++ object vtable hierarchy.
+ Reconstruct it for later use during GC. */
+ case R_PARISC_GNU_VTINHERIT:
+ if (!_bfd_elf32_gc_record_vtinherit (abfd, sec,
+ &h->elf, rel->r_offset))
+ return false;
+ continue;
+
+ /* This relocation describes which C++ vtable entries are actually
+ used. Record for later use during GC. */
+ case R_PARISC_GNU_VTENTRY:
+ if (!_bfd_elf32_gc_record_vtentry (abfd, sec,
+ &h->elf, rel->r_offset))
+ return false;
+ continue;
+
+ default:
+ continue;
+ }
+
+ /* Now carry out our orders. */
+ if (need_entry & NEED_GOT)
+ {
+ /* Allocate space for a GOT entry, as well as a dynamic
+ relocation for this entry. */
+ if (dynobj == NULL)
+ elf_hash_table (info)->dynobj = dynobj = abfd;
+
+ if (hplink->sgot == NULL)
+ {
+ if (! elf32_hppa_create_dynamic_sections (dynobj, info))
+ return false;
+ }
+
+ if (h != NULL)
+ {
+ if (h->elf.got.refcount == -1)
+ {
+ h->elf.got.refcount = 1;
+
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->elf.dynindx == -1)
+ {
+ if (! bfd_elf32_link_record_dynamic_symbol (info,
+ &h->elf))
+ return false;
+ }
+
+ hplink->sgot->_raw_size += GOT_ENTRY_SIZE;
+ hplink->srelgot->_raw_size += sizeof (Elf32_External_Rela);
+ }
+ else
+ h->elf.got.refcount += 1;
+ }
+ else
+ {
+ /* This is a global offset table entry for a local symbol. */
+ if (local_got_refcounts == NULL)
+ {
+ size_t size;
+
+ size = symtab_hdr->sh_info * sizeof (bfd_signed_vma);
+ local_got_refcounts = ((bfd_signed_vma *)
+ bfd_alloc (abfd, size));
+ if (local_got_refcounts == NULL)
+ return false;
+ elf_local_got_refcounts (abfd) = local_got_refcounts;
+ memset (local_got_refcounts, -1, size);
+ }
+ if (local_got_refcounts[r_symndx] == -1)
+ {
+ local_got_refcounts[r_symndx] = 1;
+
+ hplink->sgot->_raw_size += GOT_ENTRY_SIZE;
+ if (info->shared)
+ {
+ /* If we are generating a shared object, we need to
+ output a reloc so that the dynamic linker can
+ adjust this GOT entry (because the address
+ the shared library is loaded at is not fixed). */
+ hplink->srelgot->_raw_size +=
+ sizeof (Elf32_External_Rela);
+ }
+ }
+ else
+ local_got_refcounts[r_symndx] += 1;
+ }
+ }
+
+ if (need_entry & NEED_PLT)
+ {
+ /* If we are creating a shared library, and this is a reloc
+ against a weak symbol or a global symbol in a dynamic
+ object, then we will be creating an import stub and a
+ .plt entry for the symbol. Similarly, on a normal link
+ to symbols defined in a dynamic object we'll need the
+ import stub and a .plt entry. We don't know yet whether
+ the symbol is defined or not, so make an entry anyway and
+ clean up later in adjust_dynamic_symbol. */
+ if ((sec->flags & SEC_ALLOC) != 0)
+ {
+ if (h->elf.plt.refcount == -1)
+ {
+ h->elf.plt.refcount = 1;
+ h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ }
+ else
+ h->elf.plt.refcount += 1;
+ }
+ }
+
+ if (need_entry & (NEED_DYNREL | NEED_STUBREL))
+ {
+ /* Flag this symbol as having a non-got, non-plt reference
+ so that we generate copy relocs if it turns out to be
+ dynamic. */
+ if (h != NULL)
+ h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
+
+ /* If we are creating a shared library then we need to copy
+ the reloc into the shared library. However, if we are
+ linking with -Bsymbolic, we need only copy absolute
+ relocs or relocs against symbols that are not defined in
+ an object we are including in the link. PC- or DP- or
+ DLT-relative relocs against any local sym or global sym
+ with DEF_REGULAR set, can be discarded. At this point we
+ have not seen all the input files, so it is possible that
+ DEF_REGULAR is not set now but will be set later (it is
+ never cleared). We account for that possibility below by
+ storing information in the reloc_entries field of the
+ hash table entry.
+
+ A similar situation to the -Bsymbolic case occurs when
+ creating shared libraries and symbol visibility changes
+ render the symbol local.
+
+ As it turns out, all the relocs we will be creating here
+ are absolute, so we cannot remove them on -Bsymbolic
+ links or visibility changes anyway. A STUB_REL reloc
+ is absolute too, as in that case it is the reloc in the
+ stub we will be creating, rather than copying the PCREL
+ reloc in the branch. */
+ if ((sec->flags & SEC_ALLOC) != 0
+ && info->shared
+#if RELATIVE_DYNAMIC_RELOCS
+ && (!info->symbolic
+ || is_absolute_reloc (r_type)
+ || (h != NULL
+ && ((h->elf.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0
+ || h->elf.root.type == bfd_link_hash_defweak)))
+#endif
+ )
+ {
+ boolean doit;
+ asection *srel;
+
+ srel = sreloc;
+ if ((need_entry & NEED_STUBREL))
+ srel = stubreloc;
+
+ /* Create a reloc section in dynobj and make room for
+ this reloc. */
+ if (srel == NULL)
+ {
+ char *name;
+
+ if (dynobj == NULL)
+ elf_hash_table (info)->dynobj = dynobj = abfd;
+
+ name = bfd_elf_string_from_elf_section
+ (abfd,
+ elf_elfheader (abfd)->e_shstrndx,
+ elf_section_data (sec)->rel_hdr.sh_name);
+ if (name == NULL)
+ {
+ (*_bfd_error_handler)
+ (_("Could not find relocation section for %s"),
+ sec->name);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+
+ if ((need_entry & NEED_STUBREL))
+ {
+ int len = strlen (name) + sizeof (STUB_SUFFIX);
+ char *newname = bfd_malloc (len);
+
+ if (newname == NULL)
+ return false;
+ strcpy (newname, name);
+ strcpy (newname + len - sizeof (STUB_SUFFIX),
+ STUB_SUFFIX);
+ name = newname;
+ }
+
+ srel = bfd_get_section_by_name (dynobj, name);
+ if (srel == NULL)
+ {
+ flagword flags;
+
+ srel = bfd_make_section (dynobj, name);
+ flags = (SEC_HAS_CONTENTS | SEC_READONLY
+ | SEC_IN_MEMORY | SEC_LINKER_CREATED);
+ if ((sec->flags & SEC_ALLOC) != 0)
+ flags |= SEC_ALLOC | SEC_LOAD;
+ if (srel == NULL
+ || !bfd_set_section_flags (dynobj, srel, flags)
+ || !bfd_set_section_alignment (dynobj, srel, 2))
+ return false;
+ }
+ else if ((need_entry & NEED_STUBREL))
+ free (name);
+
+ if ((need_entry & NEED_STUBREL))
+ stubreloc = srel;
+ else
+ sreloc = srel;
+ }
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ /* If this is a function call, we only need one dynamic
+ reloc for the stub as all calls to a particular
+ function will go through the same stub. Actually, a
+ long branch stub needs two relocations, but we count
+ on some intelligence on the part of the dynamic
+ linker. */
+ if ((need_entry & NEED_STUBREL))
+ {
+ doit = h->stub_reloc_sec != stubreloc;
+ h->stub_reloc_sec = stubreloc;
+ }
+ else
+#endif
+ doit = 1;
+
+ if (doit)
+ {
+ srel->_raw_size += sizeof (Elf32_External_Rela);
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS
+ /* Keep track of relocations we have entered for
+ this global symbol, so that we can discard them
+ later if necessary. */
+ if (h != NULL
+ && (0
+#if RELATIVE_DYNAMIC_RELOCS
+ || ! is_absolute_reloc (rtype)
+#endif
+ || (need_entry & NEED_STUBREL)))
+ {
+ struct elf32_hppa_dyn_reloc_entry *p;
- /* Create the long branch. A long branch is formed with "ldil"
- loading the upper bits of the target address into a register,
- then branching with "be" which adds in the lower bits.
- The "be" has its delay slot nullified. */
- insn = hppa_rebuild_insn (LDIL_R1,
- hppa_field_adjust (sym_value, 0, e_lrsel),
- 21);
- bfd_put_32 (stub_bfd, insn, loc);
+ for (p = h->reloc_entries; p != NULL; p = p->next)
+ if (p->section == srel)
+ break;
- insn = hppa_rebuild_insn (BE_SR4_R1,
- hppa_field_adjust (sym_value, 0, e_rrsel) >> 2,
- 17);
- bfd_put_32 (stub_bfd, insn, loc + 4);
+ if (p == NULL)
+ {
+ p = ((struct elf32_hppa_dyn_reloc_entry *)
+ bfd_alloc (dynobj, sizeof *p));
+ if (p == NULL)
+ return false;
+ p->next = h->reloc_entries;
+ h->reloc_entries = p;
+ p->section = srel;
+ p->count = 0;
+ }
- hppa_link_hash->offset[stub_sec->index] += 8;
+ /* NEED_STUBREL and NEED_DYNREL are never both
+ set. Leave the count at zero for the
+ NEED_STUBREL case as we only ever have one
+ stub reloc per section per symbol, and this
+ simplifies code in hppa_discard_copies. */
+ if (! (need_entry & NEED_STUBREL))
+ ++p->count;
+ }
+#endif
+ }
+ }
+ }
+ }
return true;
}
-/* As above, but don't actually build the stub. Just bump offset so
- we know stub section sizes. */
+
+/* Return the section that should be marked against garbage collection
+ for a given relocation. */
+
+static asection *
+elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym)
+ bfd *abfd;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+ Elf_Internal_Rela *rel;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+{
+ if (h != NULL)
+ {
+ switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
+ {
+ case R_PARISC_GNU_VTINHERIT:
+ case R_PARISC_GNU_VTENTRY:
+ break;
+
+ default:
+ switch (h->root.type)
+ {
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ return h->root.u.def.section;
+
+ case bfd_link_hash_common:
+ return h->root.u.c.p->section;
+
+ default:
+ break;
+ }
+ }
+ }
+ else
+ {
+ if (!(elf_bad_symtab (abfd)
+ && ELF_ST_BIND (sym->st_info) != STB_LOCAL)
+ && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE)
+ && sym->st_shndx != SHN_COMMON))
+ {
+ return bfd_section_from_elf_index (abfd, sym->st_shndx);
+ }
+ }
+
+ return NULL;
+}
+
+
+/* Update the got and plt entry reference counts for the section being
+ removed. */
static boolean
-elf32_hppa_size_one_stub (gen_entry, in_arg)
- struct bfd_hash_entry *gen_entry;
- PTR in_arg;
+elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs)
+ bfd *abfd;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+ asection *sec;
+ const Elf_Internal_Rela *relocs;
{
- struct elf32_hppa_stub_hash_entry *stub_entry;
- struct elf32_hppa_link_hash_table *hppa_link_hash;
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ bfd_signed_vma *local_got_refcounts;
+ const Elf_Internal_Rela *rel, *relend;
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h;
+ bfd *dynobj;
+ asection *sgot;
+ asection *srelgot;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
+
+ dynobj = elf_hash_table (info)->dynobj;
+ if (dynobj == NULL)
+ return true;
+
+ sgot = hppa_link_hash_table (info)->sgot;
+ srelgot = hppa_link_hash_table (info)->srelgot;
+
+ relend = relocs + sec->reloc_count;
+ for (rel = relocs; rel < relend; rel++)
+ switch ((unsigned int) ELF32_R_TYPE (rel->r_info))
+ {
+ case R_PARISC_DLTIND14F:
+ case R_PARISC_DLTIND14R:
+ case R_PARISC_DLTIND21L:
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ if (h->got.refcount > 0)
+ {
+ h->got.refcount -= 1;
+ if (h->got.refcount == 0)
+ {
+ sgot->_raw_size -= 4;
+ srelgot->_raw_size -= sizeof (Elf32_External_Rela);
+ }
+ }
+ }
+ else if (local_got_refcounts != NULL)
+ {
+ if (local_got_refcounts[r_symndx] > 0)
+ {
+ local_got_refcounts[r_symndx] -= 1;
+ if (local_got_refcounts[r_symndx] == 0)
+ {
+ sgot->_raw_size -= 4;
+ if (info->shared)
+ srelgot->_raw_size -= sizeof (Elf32_External_Rela);
+ }
+ }
+ }
+ break;
- /* Massage our args to the form they really have. */
- stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry;
- hppa_link_hash = (struct elf32_hppa_link_hash_table *) in_arg;
+ case R_PARISC_PLABEL14R:
+ case R_PARISC_PLABEL21L:
+ case R_PARISC_PLABEL32:
+ case R_PARISC_PCREL12F:
+ case R_PARISC_PCREL17C:
+ case R_PARISC_PCREL17F:
+ case R_PARISC_PCREL22F:
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ if (h->plt.refcount > 0)
+ h->plt.refcount -= 1;
+ }
+ break;
- hppa_link_hash->offset[stub_entry->stub_sec->index] += 8;
+ default:
+ break;
+ }
return true;
}
-/* External entry points for sizing and building linker stubs. */
-/* Build all the stubs associated with the current output file. The
- stubs are kept in a hash table attached to the main linker hash
- table. This is called via hppaelf_finish in the linker. */
+/* Adjust a symbol defined by a dynamic object and referenced by a
+ regular object. The current definition is in some section of the
+ dynamic object, but we're not including those sections. We have to
+ change the definition to something the rest of the link can
+ understand. */
-boolean
-elf32_hppa_build_stubs (stub_bfd, link_info)
- bfd *stub_bfd;
- struct bfd_link_info *link_info;
+static boolean
+elf32_hppa_adjust_dynamic_symbol (info, h)
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *h;
{
- asection *stub_sec;
- struct bfd_hash_table *table;
- struct elf32_hppa_link_hash_table *hppa_link_hash;
+ bfd *dynobj;
+ struct elf32_hppa_link_hash_table *hplink;
+ asection *s;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ hplink = hppa_link_hash_table (info);
+
+ /* If this is a function, put it in the procedure linkage table. We
+ will fill in the contents of the procedure linkage table later,
+ when we know the address of the .got section. */
+ if (h->type == STT_FUNC
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
+ {
+ if (h->plt.refcount <= 0
+ || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
+ && h->root.type != bfd_link_hash_defweak
+ && (!info->shared || info->symbolic)))
+ {
+ /* The .plt entry is not needed when:
+ a) Garbage collection has removed all references to the
+ symbol, or
+ b) We know for certain the symbol is defined in this
+ object, and it's not a weak definition. Either this
+ object is the application or we are doing a shared
+ symbolic link. As a special sop to the hppa ABI, we
+ keep a .plt entry for functions in sections containing
+ PIC code. */
+ if (!info->shared
+ && h->plt.refcount > 0
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)
+ {
+ ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
+ }
+ else
+ {
+ h->plt.offset = (bfd_vma) -1;
+ h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ return true;
+ }
+ }
+
+ /* Make an entry in the .plt section. */
+ s = hplink->splt;
+ h->plt.offset = s->_raw_size;
+ s->_raw_size += PLT_ENTRY_SIZE;
+
+ if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
+ {
+ /* Make sure this symbol is output as a dynamic symbol. */
+ if (h->dynindx == -1)
+ {
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ /* We also need to make an entry in the .rela.plt section. */
+ s = hplink->srelplt;
+ s->_raw_size += sizeof (Elf32_External_Rela);
+ }
+ return true;
+ }
- for (stub_sec = stub_bfd->sections; stub_sec; stub_sec = stub_sec->next)
+ /* 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->weakdef != NULL)
{
- unsigned int size;
+ BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined
+ || h->weakdef->root.type == bfd_link_hash_defweak);
+ h->root.u.def.section = h->weakdef->root.u.def.section;
+ h->root.u.def.value = h->weakdef->root.u.def.value;
+ return true;
+ }
- /* Allocate memory to hold the linker stubs. */
- size = bfd_section_size (stub_bfd, stub_sec);
- stub_sec->contents = (unsigned char *) bfd_zalloc (stub_bfd, size);
- if (stub_sec->contents == NULL && size != 0)
- return false;
+ /* This is a reference to a symbol defined by a dynamic object which
+ is not a function. */
+
+ /* If we are creating a shared library, we must presume that the
+ 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 (info->shared)
+ return true;
+
+ /* If there are no references to this symbol that do not use the
+ GOT, we don't need to generate a copy reloc. */
+ if ((h->elf_link_hash_flags & ELF_LINK_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
+ object will contain position independent code, so all references
+ from the dynamic object to this symbol will go through the global
+ offset table. The dynamic linker will use the .dynsym entry to
+ determine the address it must put in the global offset table, so
+ both the dynamic object and the regular object will refer to the
+ same memory location for the variable. */
+
+ s = hplink->sdynbss;
+
+ /* We must generate a COPY reloc to tell the dynamic linker to
+ copy the initial value out of the dynamic object and into the
+ runtime process image. We need to remember the offset into the
+ .rela.bss section we are going to use. */
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
+ {
+ asection *srel;
+
+ srel = hplink->srelbss;
+ srel->_raw_size += sizeof (Elf32_External_Rela);
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
}
- /* Build the stubs as directed by the stub hash table. */
- hppa_link_hash = elf32_hppa_hash_table (link_info);
- memset (hppa_link_hash->offset, 0,
- stub_bfd->section_count * sizeof (bfd_vma));
+ {
+ /* We need to figure out the alignment required for this symbol. I
+ have no idea how other ELF linkers handle this. */
+ unsigned int power_of_two;
+
+ power_of_two = bfd_log2 (h->size);
+ if (power_of_two > 3)
+ power_of_two = 3;
+
+ /* Apply the required alignment. */
+ s->_raw_size = BFD_ALIGN (s->_raw_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->_raw_size;
- table = &hppa_link_hash->stub_hash_table;
- bfd_hash_traverse (table, elf32_hppa_build_one_stub, hppa_link_hash);
+ /* Increment the section size to make room for the symbol. */
+ s->_raw_size += h->size;
return true;
}
-/* Determine and set the size of the stub section for a final link.
- The basic idea here is to examine all the relocations looking for
- PC-relative calls to a target that is unreachable with a "bl"
- instruction or calls where the caller and callee disagree on the
- location of their arguments or return value. Currently, we don't
- support elf arg relocs. */
+/* Called via elf_link_hash_traverse to create .plt entries for an
+ application that uses statically linked PIC functions. Similar to
+ the first part of elf32_hppa_adjust_dynamic_symbol. */
-boolean
-elf32_hppa_size_stubs (stub_bfd, link_info,
- add_stub_section, layout_sections_again)
- bfd *stub_bfd;
- struct bfd_link_info *link_info;
- asection * (*add_stub_section) PARAMS ((const char *, asection *));
- void (*layout_sections_again) PARAMS ((void));
+static boolean
+hppa_handle_PIC_calls (h, inf)
+ struct elf_link_hash_entry *h;
+ PTR inf;
{
- bfd *input_bfd;
- asection *section;
- Elf_Internal_Sym *local_syms, **all_local_syms;
- asection **stub_section_created;
- unsigned int i, indx, bfd_count, sec_count;
- asection *stub_sec;
- asection *first_init_sec = NULL;
- asection *first_fini_sec = NULL;
- struct elf32_hppa_link_hash_table *hppa_link_hash;
- struct bfd_hash_table *stub_hash_table;
- boolean stub_changed;
-
- /* Count the number of input BFDs and the total number of input sections. */
- for (input_bfd = link_info->input_bfds, bfd_count = 0, sec_count = 0;
- input_bfd != NULL;
- input_bfd = input_bfd->link_next)
+ struct bfd_link_info *info;
+ bfd *dynobj;
+ struct elf32_hppa_link_hash_table *hplink;
+ asection *s;
+
+ if (! (h->plt.refcount > 0
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0))
{
- bfd_count += 1;
- sec_count += input_bfd->section_count;
+ h->plt.offset = (bfd_vma) -1;
+ h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ return true;
}
- stub_section_created
- = (asection **) bfd_zmalloc (sizeof (asection *) * sec_count);
- if (stub_section_created == NULL)
- return false;
+ ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
- /* We want to read in symbol extension records only once. To do this
- we need to read in the local symbols in parallel and save them for
- later use; so hold pointers to the local symbols in an array. */
- all_local_syms
- = (Elf_Internal_Sym **) bfd_zmalloc (sizeof (Elf_Internal_Sym *)
- * bfd_count);
- if (all_local_syms == NULL)
- goto error_ret_free_stub;
+ info = (struct bfd_link_info *) inf;
+ dynobj = elf_hash_table (info)->dynobj;
+ hplink = hppa_link_hash_table (info);
- /* Walk over all the input BFDs adding entries to the args hash table
- for all the external functions. */
- for (input_bfd = link_info->input_bfds, indx = 0;
- input_bfd != NULL;
- input_bfd = input_bfd->link_next, indx++)
- {
- Elf_Internal_Shdr *symtab_hdr;
- Elf_Internal_Sym *isym;
- Elf32_External_Sym *ext_syms, *esym;
+ /* Make an entry in the .plt section. */
+ s = hplink->splt;
+ h->plt.offset = s->_raw_size;
+ s->_raw_size += PLT_ENTRY_SIZE;
+
+ return true;
+}
+
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS
+/* This function is called via elf_link_hash_traverse to discard space
+ we allocated for relocs that it turned out we didn't need. */
+
+static boolean
+hppa_discard_copies (h, inf)
+ struct elf_link_hash_entry *h;
+ PTR inf;
+{
+ struct elf32_hppa_dyn_reloc_entry *s;
+ struct elf32_hppa_link_hash_entry *eh;
+ struct bfd_link_info *info;
+
+ eh = (struct elf32_hppa_link_hash_entry *) h;
+ info = (struct bfd_link_info *) inf;
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ /* Handle the stub reloc case. If we have a plt entry for the
+ function, we won't be needing long branch stubs. s->count will
+ only be zero for stub relocs, which provides a handy way of
+ flagging these relocs, and means we need do nothing special for
+ the forced local and symbolic link case. */
+ if (eh->stub_reloc_sec != NULL
+ && eh->elf.plt.offset != (bfd_vma) -1)
+ {
+ for (s = eh->reloc_entries; s != NULL; s = s->next)
+ if (s->count == 0)
+ s->section->_raw_size -= sizeof (Elf32_External_Rela);
+ }
+#endif
+
+ /* If a symbol has been forced local or we have found a regular
+ definition for the symbolic link case, then we won't be needing
+ any relocs. */
+#if RELATIVE_DYNAMIC_RELOCS
+ if (eh->elf.dynindx == -1
+ || ((eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
+ && eh->elf.root.type != bfd_link_hash_defweak
+ && info->symbolic))
+ {
+ for (s = eh->reloc_entries; s != NULL; s = s->next)
+ s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela);
+ }
+#endif
+
+ return true;
+}
+#endif
+
+
+/* Set the sizes of the dynamic sections. */
+
+static boolean
+elf32_hppa_size_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ struct elf32_hppa_link_hash_table *hplink;
+ bfd *dynobj;
+ asection *s;
+ boolean relocs;
+ boolean reltext;
+
+ hplink = hppa_link_hash_table (info);
+ dynobj = elf_hash_table (info)->dynobj;
+ BFD_ASSERT (dynobj != NULL);
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Set the contents of the .interp section to the interpreter. */
+ if (! info->shared)
+ {
+ s = bfd_get_section_by_name (dynobj, ".interp");
+ BFD_ASSERT (s != NULL);
+ s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
+ }
+ else
+ {
+ /* Run through the function symbols, looking for any that are
+ PIC, and allocate space for the necessary .plt entries so
+ that %r19 will be set up. */
+ if (! info->shared)
+ elf_link_hash_traverse (&hplink->root,
+ hppa_handle_PIC_calls,
+ info);
+
+ /* We may have created entries in the .rela.got section.
+ However, if we are not creating the dynamic sections, we will
+ not actually use these entries. Reset the size of .rela.got,
+ which will cause it to get stripped from the output file
+ below. */
+ hplink->srelgot->_raw_size = 0;
+ }
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS
+ /* If this is a -Bsymbolic shared link, then we need to discard all
+ relocs against symbols defined in a regular object. We also need
+ to lose relocs we've allocated for long branch stubs if we know
+ we won't be generating a stub. */
+ if (info->shared)
+ elf_link_hash_traverse (&hplink->root,
+ hppa_discard_copies,
+ info);
+#endif
+
+ /* The check_relocs and adjust_dynamic_symbol entry points have
+ determined the sizes of the various dynamic sections. Allocate
+ memory for them. */
+ relocs = false;
+ reltext = false;
+ for (s = dynobj->sections; s != NULL; s = s->next)
+ {
+ const char *name;
+
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
+
+ /* It's OK to base decisions on the section name, because none
+ of the dynobj section names depend upon the input files. */
+ name = bfd_get_section_name (dynobj, s);
+
+ if (strncmp (name, ".rela", 5) == 0)
+ {
+ if (s->_raw_size != 0)
+ {
+ asection *target;
+
+ /* Remember whether there are any reloc sections other
+ than .rela.plt. */
+ if (strcmp (name+5, ".plt") != 0)
+ {
+ const char *outname;
+
+ relocs = true;
+
+ /* If this relocation section applies to a read only
+ section, then we probably need a DT_TEXTREL
+ entry. The entries in the .rela.plt section
+ really apply to the .got section, which we
+ created ourselves and so know is not readonly. */
+ outname = bfd_get_section_name (output_bfd,
+ s->output_section);
+ target = bfd_get_section_by_name (output_bfd, outname + 5);
+ if (target != NULL
+ && (target->flags & SEC_READONLY) != 0
+ && (target->flags & SEC_ALLOC) != 0)
+ reltext = 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 if (strcmp (name, ".plt") == 0)
+ ;
+ else if (strcmp (name, ".got") == 0)
+ ;
+ else
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
+ }
+
+ if (s->_raw_size == 0)
+ {
+ /* If we don't need this section, strip it from the
+ output file. This is mostly to handle .rela.bss and
+ .rela.plt. We must create both sections in
+ create_dynamic_sections, because they must be created
+ before the linker maps input sections to output
+ sections. The linker does that before
+ adjust_dynamic_symbol is called, and it is that
+ function which decides whether anything needs to go
+ into these sections. */
+ _bfd_strip_section_from_output (info, s);
+ continue;
+ }
+
+ /* Allocate memory for the section contents. Zero it, because
+ we may not fill in all the reloc sections. */
+ s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
+ if (s->contents == NULL && s->_raw_size != 0)
+ return false;
+ }
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It
+ actually has nothing to do with the PLT, it is how we
+ communicate the LTP value of a load module to the dynamic
+ linker. */
+ if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0))
+ return false;
+
+ /* Add some entries to the .dynamic section. We fill in the
+ values later, in elf32_hppa_finish_dynamic_sections, but we
+ must add the entries now so that we get the correct size for
+ the .dynamic section. The DT_DEBUG entry is filled in by the
+ dynamic linker and used by the debugger. */
+ if (! info->shared)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
+ return false;
+ }
+
+ if (hplink->srelplt->_raw_size != 0)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
+ return false;
+ }
+
+ if (relocs)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
+ || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
+ sizeof (Elf32_External_Rela)))
+ return false;
+ }
+
+ if (reltext)
+ {
+ if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
+ return false;
+ info->flags |= DF_TEXTREL;
+ }
+ }
+
+ return true;
+}
+
+
+/* External entry points for sizing and building linker stubs. */
+
+/* Determine and set the size of the stub section for a final link.
+
+ The basic idea here is to examine all the relocations looking for
+ PC-relative calls to a target that is unreachable with a "bl"
+ instruction. */
+
+boolean
+elf32_hppa_size_stubs (stub_bfd, multi_subspace, info,
+ add_stub_section, layout_sections_again)
+ bfd *stub_bfd;
+ boolean multi_subspace;
+ struct bfd_link_info *info;
+ asection * (*add_stub_section) PARAMS ((const char *, asection *));
+ void (*layout_sections_again) PARAMS ((void));
+{
+ bfd *input_bfd;
+ asection *section;
+ Elf_Internal_Sym *local_syms, **all_local_syms;
+ unsigned int i, indx, bfd_count, sec_count;
+ struct elf32_hppa_link_hash_table *hplink;
+ boolean stub_changed = 0;
+
+ hplink = hppa_link_hash_table (info);
+
+ /* Stash our params away. */
+ hplink->stub_bfd = stub_bfd;
+ hplink->multi_subspace = multi_subspace;
+ hplink->add_stub_section = add_stub_section;
+ hplink->layout_sections_again = layout_sections_again;
+
+ /* Count the number of input BFDs and the total number of input sections. */
+ for (input_bfd = info->input_bfds, bfd_count = 0, sec_count = 0;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link_next)
+ {
+ bfd_count += 1;
+ sec_count += input_bfd->section_count;
+ }
+
+ hplink->stub_section_created
+ = (asection **) bfd_zmalloc (sizeof (asection *) * sec_count);
+ if (hplink->stub_section_created == NULL)
+ return false;
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ hplink->reloc_section_created
+ = (asection **) bfd_zmalloc (sizeof (asection *) * sec_count);
+ if (hplink->reloc_section_created == NULL)
+ goto error_ret_free_stub;
+#endif
+
+ /* We want to read in symbol extension records only once. To do this
+ we need to read in the local symbols in parallel and save them for
+ later use; so hold pointers to the local symbols in an array. */
+ all_local_syms
+ = (Elf_Internal_Sym **) bfd_zmalloc (sizeof (Elf_Internal_Sym *)
+ * bfd_count);
+ if (all_local_syms == NULL)
+ goto error_ret_free_reloc;
+
+ /* Walk over all the input BFDs, swapping in local symbols.
+ If we are creating a shared library, create hash entries for the
+ export stubs. */
+ for (input_bfd = info->input_bfds, indx = 0, sec_count = 0;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link_next, indx++)
+ {
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Sym *isym;
+ Elf32_External_Sym *ext_syms, *esym;
/* We'll need the symbol table in a second. */
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
}
if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
- || (bfd_read (ext_syms, 1,
+ || (bfd_read (ext_syms, 1,
(symtab_hdr->sh_info * sizeof (Elf32_External_Sym)),
input_bfd)
!= (symtab_hdr->sh_info * sizeof (Elf32_External_Sym))))
/* Now we can free the external symbols. */
free (ext_syms);
- }
- stub_hash_table = &elf32_hppa_hash_table (link_info)->stub_hash_table;
+ if (info->shared && hplink->multi_subspace)
+ {
+ unsigned int symndx;
+ unsigned int symcount;
+
+ symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
+ - symtab_hdr->sh_info);
+
+ /* Look through the global syms for functions; We need to
+ build export stubs for all globally visible functions. */
+ for (symndx = 0; symndx < symcount; symndx++)
+ {
+ struct elf32_hppa_link_hash_entry *hash;
+
+ hash = ((struct elf32_hppa_link_hash_entry *)
+ elf_sym_hashes (input_bfd)[symndx]);
+
+ while (hash->elf.root.type == bfd_link_hash_indirect
+ || hash->elf.root.type == bfd_link_hash_warning)
+ hash = ((struct elf32_hppa_link_hash_entry *)
+ hash->elf.root.u.i.link);
+
+ /* At this point in the link, undefined syms have been
+ resolved, so we need to check that the symbol was
+ defined in this BFD. */
+ if ((hash->elf.root.type == bfd_link_hash_defined
+ || hash->elf.root.type == bfd_link_hash_defweak)
+ && hash->elf.type == STT_FUNC
+ && hash->elf.root.u.def.section->output_section != NULL
+ && hash->elf.root.u.def.section->owner == input_bfd
+ && (hash->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)
+ && !(hash->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL)
+ && ELF_ST_VISIBILITY (hash->elf.other) == STV_DEFAULT)
+ {
+ asection *sec;
+ const char *stub_name;
+ struct elf32_hppa_stub_hash_entry *stub_entry;
+
+ sec = hash->elf.root.u.def.section;
+ stub_name = hash->elf.root.root.string;
+ stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table,
+ stub_name,
+ false, false);
+ if (stub_entry == NULL)
+ {
+ stub_entry = hppa_add_stub (stub_name,
+ sec,
+ sec_count + sec->index,
+ info);
+ if (!stub_entry)
+ goto error_ret_free_local;
+
+ stub_entry->target_value = hash->elf.root.u.def.value;
+ stub_entry->target_section = hash->elf.root.u.def.section;
+ stub_entry->stub_type = hppa_stub_export;
+ stub_entry->h = hash;
+ stub_changed = 1;
+ }
+ else
+ {
+ (*_bfd_error_handler) (_("%s: duplicate export stub %s"),
+ bfd_get_filename (input_bfd),
+ stub_name);
+ }
+ }
+ }
+ sec_count += input_bfd->section_count;
+ }
+ }
while (1)
{
- stub_changed = 0;
+ asection *stub_sec;
+
+ for (input_bfd = info->input_bfds, indx = 0, sec_count = 0;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link_next, indx++)
+ {
+ Elf_Internal_Shdr *symtab_hdr;
+
+ /* We'll need the symbol table in a second. */
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ if (symtab_hdr->sh_info == 0)
+ continue;
+
+ local_syms = all_local_syms[indx];
+
+ /* Walk over each section attached to the input bfd. */
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next, sec_count++)
+ {
+ Elf_Internal_Shdr *input_rel_hdr;
+ Elf32_External_Rela *external_relocs, *erelaend, *erela;
+ Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
+
+ /* If there aren't any relocs, then there's nothing more
+ to do. */
+ if ((section->flags & SEC_RELOC) == 0
+ || section->reloc_count == 0)
+ continue;
+
+ /* Allocate space for the external relocations. */
+ external_relocs
+ = ((Elf32_External_Rela *)
+ bfd_malloc (section->reloc_count
+ * sizeof (Elf32_External_Rela)));
+ if (external_relocs == NULL)
+ {
+ goto error_ret_free_local;
+ }
+
+ /* Likewise for the internal relocations. */
+ internal_relocs = ((Elf_Internal_Rela *)
+ bfd_malloc (section->reloc_count
+ * sizeof (Elf_Internal_Rela)));
+ if (internal_relocs == NULL)
+ {
+ free (external_relocs);
+ goto error_ret_free_local;
+ }
+
+ /* Read in the external relocs. */
+ input_rel_hdr = &elf_section_data (section)->rel_hdr;
+ if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0
+ || bfd_read (external_relocs, 1,
+ input_rel_hdr->sh_size,
+ input_bfd) != input_rel_hdr->sh_size)
+ {
+ free (external_relocs);
+ error_ret_free_internal:
+ free (internal_relocs);
+ goto error_ret_free_local;
+ }
+
+ /* Swap in the relocs. */
+ erela = external_relocs;
+ erelaend = erela + section->reloc_count;
+ irela = internal_relocs;
+ for (; erela < erelaend; erela++, irela++)
+ bfd_elf32_swap_reloca_in (input_bfd, erela, irela);
+
+ /* We're done with the external relocs, free them. */
+ free (external_relocs);
+
+ /* Now examine each relocation. */
+ irela = internal_relocs;
+ irelaend = irela + section->reloc_count;
+ for (; irela < irelaend; irela++)
+ {
+ unsigned int r_type, r_indx;
+ enum elf32_hppa_stub_type stub_type;
+ struct elf32_hppa_stub_hash_entry *stub_entry;
+ asection *sym_sec;
+ bfd_vma sym_value;
+ bfd_vma destination;
+ struct elf32_hppa_link_hash_entry *hash;
+ char *stub_name;
+
+ r_type = ELF32_R_TYPE (irela->r_info);
+ r_indx = ELF32_R_SYM (irela->r_info);
+
+ if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ goto error_ret_free_internal;
+ }
+
+ /* Only look for stubs on call instructions. */
+ if (r_type != (unsigned int) R_PARISC_PCREL12F
+ && r_type != (unsigned int) R_PARISC_PCREL17F
+ && r_type != (unsigned int) R_PARISC_PCREL22F)
+ continue;
+
+ /* Now determine the call target, its name, value,
+ section. */
+ sym_sec = NULL;
+ sym_value = 0;
+ destination = 0;
+ hash = NULL;
+ if (r_indx < symtab_hdr->sh_info)
+ {
+ /* It's a local symbol. */
+ Elf_Internal_Sym *sym;
+ Elf_Internal_Shdr *hdr;
+
+ sym = local_syms + r_indx;
+ hdr = elf_elfsections (input_bfd)[sym->st_shndx];
+ sym_sec = hdr->bfd_section;
+ if (ELF_ST_TYPE (sym->st_info) != STT_SECTION)
+ sym_value = sym->st_value;
+ destination = (sym_value + irela->r_addend
+ + sym_sec->output_offset
+ + sym_sec->output_section->vma);
+ }
+ else
+ {
+ /* It's an external symbol. */
+ int e_indx;
+
+ e_indx = r_indx - symtab_hdr->sh_info;
+ hash = ((struct elf32_hppa_link_hash_entry *)
+ elf_sym_hashes (input_bfd)[e_indx]);
+
+ while (hash->elf.root.type == bfd_link_hash_indirect
+ || hash->elf.root.type == bfd_link_hash_warning)
+ hash = ((struct elf32_hppa_link_hash_entry *)
+ hash->elf.root.u.i.link);
+
+ if (hash->elf.root.type == bfd_link_hash_defined
+ || hash->elf.root.type == bfd_link_hash_defweak)
+ {
+ sym_sec = hash->elf.root.u.def.section;
+ sym_value = hash->elf.root.u.def.value;
+ if (sym_sec->output_section != NULL)
+ destination = (sym_value + irela->r_addend
+ + sym_sec->output_offset
+ + sym_sec->output_section->vma);
+ }
+ else if (hash->elf.root.type == bfd_link_hash_undefweak)
+ {
+ if (! info->shared)
+ continue;
+ }
+ else if (hash->elf.root.type == bfd_link_hash_undefined)
+ {
+ if (! (info->shared
+ && !info->no_undefined
+ && (ELF_ST_VISIBILITY (hash->elf.other)
+ == STV_DEFAULT)))
+ continue;
+ }
+ else
+ {
+ bfd_set_error (bfd_error_bad_value);
+ goto error_ret_free_internal;
+ }
+ }
+
+ /* Determine what (if any) linker stub is needed. */
+ stub_type = hppa_type_of_stub (section, irela, hash,
+ destination);
+ if (stub_type == hppa_stub_none)
+ continue;
+
+ /* Get the name of this stub. */
+ stub_name = hppa_stub_name (section, sym_sec, hash, irela);
+ if (!stub_name)
+ goto error_ret_free_internal;
+
+ stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table,
+ stub_name,
+ false, false);
+ if (stub_entry != NULL)
+ {
+ /* The proper stub has already been created. */
+ free (stub_name);
+ continue;
+ }
+
+ stub_entry = hppa_add_stub (stub_name, section,
+ sec_count, info);
+ if (stub_entry == NULL)
+ {
+ free (stub_name);
+ goto error_ret_free_local;
+ }
+
+ stub_entry->target_value = sym_value;
+ stub_entry->target_section = sym_sec;
+ stub_entry->stub_type = stub_type;
+ if (info->shared)
+ {
+ if (stub_type == hppa_stub_import)
+ stub_entry->stub_type = hppa_stub_import_shared;
+ else if (stub_type == hppa_stub_long_branch
+ && (LONG_BRANCH_PIC_IN_SHLIB || hash == NULL))
+ stub_entry->stub_type = hppa_stub_long_branch_shared;
+ }
+ stub_entry->h = hash;
+ stub_changed = 1;
+ }
+
+ /* We're done with the internal relocs, free them. */
+ free (internal_relocs);
+ }
+ }
+
+ if (!stub_changed)
+ break;
+
+ /* OK, we've added some stubs. Find out the new size of the
+ stub sections. */
+ hplink->offset = (bfd_vma *)
+ bfd_realloc (hplink->offset,
+ hplink->stub_bfd->section_count * sizeof (bfd_vma));
+ if (hplink->offset == NULL)
+ goto error_ret_free_local;
+
+ memset (hplink->offset, 0,
+ hplink->stub_bfd->section_count * sizeof (bfd_vma));
+
+ bfd_hash_traverse (&hplink->stub_hash_table,
+ hppa_size_one_stub,
+ hplink);
+
+ for (stub_sec = hplink->stub_bfd->sections;
+ stub_sec != NULL;
+ stub_sec = stub_sec->next)
+ {
+ bfd_set_section_size (hplink->stub_bfd, stub_sec,
+ hplink->offset[stub_sec->index]);
+ }
+ /* Ask the linker to do its stuff. */
+ (*hplink->layout_sections_again) ();
+ stub_changed = 0;
+ }
+
+ /* We're done with the local symbols, free them. */
+ for (i = 0; i < bfd_count; i++)
+ if (all_local_syms[i])
+ free (all_local_syms[i]);
+ free (all_local_syms);
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ free (hplink->reloc_section_created);
+#endif
+ free (hplink->stub_section_created);
+ return true;
+
+ error_ret_free_local:
+ for (i = 0; i < bfd_count; i++)
+ if (all_local_syms[i])
+ free (all_local_syms[i]);
+ free (all_local_syms);
+
+ error_ret_free_reloc:
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ free (hplink->reloc_section_created);
+ error_ret_free_stub:
+#endif
+ free (hplink->stub_section_created);
+ return false;
+}
+
+
+/* For a final link, this function is called after we have sized the
+ stubs to provide a value for __gp. */
+
+boolean
+elf32_hppa_set_gp (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
+{
+ struct elf_link_hash_entry *h;
+ asection *sec;
+ bfd_vma gp_val;
+
+ h = elf_link_hash_lookup (elf_hash_table (info), "$global$",
+ false, false, false);
+
+ if (h != NULL && h->root.type == bfd_link_hash_defined)
+ {
+ gp_val = h->root.u.def.value;
+ sec = h->root.u.def.section;
+ }
+ else
+ {
+ /* If $global$ isn't defined, we make one up ourselves
+ from the start of .data, .plt, or .got. */
+ struct elf32_hppa_link_hash_table *hplink;
+
+ hplink = hppa_link_hash_table (info);
+ gp_val = 0;
+ sec = bfd_get_section_by_name (abfd, ".data");
+ if (sec == NULL)
+ sec = hplink->splt;
+ if (sec == NULL)
+ sec = hplink->sgot;
+ if (sec == NULL)
+ {
+ (*info->callbacks->undefined_symbol)
+ (info, "$global$", abfd, NULL, 0, true);
+ return false;
+ }
+ }
+
+ elf_gp (abfd) = (gp_val
+ + sec->output_section->vma
+ + sec->output_offset);
+ return true;
+}
+
+
+/* Build all the stubs associated with the current output file. The
+ stubs are kept in a hash table attached to the main linker hash
+ table. We also set up the .plt entries for statically linked PIC
+ functions here. This function is called via hppaelf_finish in the
+ linker. */
+
+boolean
+elf32_hppa_build_stubs (info)
+ struct bfd_link_info *info;
+{
+ asection *stub_sec;
+ struct bfd_hash_table *table;
+ struct elf32_hppa_link_hash_table *hplink;
+
+ hplink = hppa_link_hash_table (info);
+
+ for (stub_sec = hplink->stub_bfd->sections;
+ stub_sec != NULL;
+ stub_sec = stub_sec->next)
+ {
+ unsigned int size;
+
+ /* Allocate memory to hold the linker stubs. */
+ size = bfd_section_size (hplink->stub_bfd, stub_sec);
+ stub_sec->contents = (unsigned char *) bfd_zalloc (hplink->stub_bfd,
+ size);
+ if (stub_sec->contents == NULL && size != 0)
+ return false;
+ }
+
+ /* Build the stubs as directed by the stub hash table. */
+ memset (hplink->offset, 0,
+ hplink->stub_bfd->section_count * sizeof (bfd_vma));
+
+ table = &hplink->stub_hash_table;
+ bfd_hash_traverse (table, hppa_build_one_stub, info);
+
+ return true;
+}
+
+
+/* Perform a relocation as part of a final link. */
+
+static bfd_reloc_status_type
+final_link_relocate (input_section, contents, rel, value, info, sym_sec, h)
+ asection *input_section;
+ bfd_byte *contents;
+ const Elf_Internal_Rela *rel;
+ bfd_vma value;
+ struct bfd_link_info *info;
+ asection *sym_sec;
+ struct elf32_hppa_link_hash_entry *h;
+{
+ int insn;
+ unsigned int r_type = ELF32_R_TYPE (rel->r_info);
+ reloc_howto_type *howto = elf_hppa_howto_table + r_type;
+ int r_format = howto->bitsize;
+ enum hppa_reloc_field_selector_type_alt r_field;
+ bfd *input_bfd = input_section->owner;
+ bfd_vma offset = rel->r_offset;
+ bfd_vma max_branch_offset = 0;
+ bfd_byte *hit_data = contents + offset;
+ bfd_signed_vma addend = rel->r_addend;
+ bfd_vma location;
+ struct elf32_hppa_stub_hash_entry *stub_entry = NULL;
+ int val;
+
+ if (r_type == R_PARISC_NONE)
+ return bfd_reloc_ok;
+
+ insn = bfd_get_32 (input_bfd, hit_data);
+
+ /* Find out where we are and where we're going. */
+ location = (offset +
+ input_section->output_offset +
+ input_section->output_section->vma);
+
+ switch (r_type)
+ {
+ case R_PARISC_PCREL12F:
+ case R_PARISC_PCREL17F:
+ case R_PARISC_PCREL22F:
+ /* If this is a call to a function defined in another dynamic
+ library, or if it is a call to a PIC function in the same
+ object, then find the import stub in the stub hash. */
+ if (sym_sec == NULL
+ || sym_sec->output_section == NULL
+ || (h != NULL && h->pic_call))
+ {
+ stub_entry = hppa_get_stub_entry (input_section, sym_sec,
+ h, rel, info);
+ if (stub_entry != NULL)
+ {
+ value = (stub_entry->stub_offset
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_sec->output_section->vma);
+ addend = 0;
+ }
+ else if (sym_sec == NULL && h != NULL
+ && h->elf.root.type == bfd_link_hash_undefweak)
+ {
+ /* It's OK if undefined weak. Make undefined weak
+ branches go nowhere. */
+ value = location;
+ addend = 0;
+ }
+ else
+ return bfd_reloc_notsupported;
+ }
+ /* Fall thru. */
+
+ case R_PARISC_PCREL21L:
+ case R_PARISC_PCREL17C:
+ case R_PARISC_PCREL17R:
+ case R_PARISC_PCREL14R:
+ case R_PARISC_PCREL14F:
+ /* Make it a pc relative offset. */
+ value -= location;
+ addend -= 8;
+ break;
+
+ case R_PARISC_DPREL21L:
+ case R_PARISC_DPREL14R:
+ case R_PARISC_DPREL14F:
+ /* For all the DP relative relocations, we need to examine the symbol's
+ section. If it's a code section, then "data pointer relative" makes
+ no sense. In that case we don't adjust the "value", and for 21 bit
+ addil instructions, we change the source addend register from %dp to
+ %r0. This situation commonly arises when a variable's "constness"
+ is declared differently from the way the variable is defined. For
+ instance: "extern int foo" with foo defined as "const int foo". */
+ if (sym_sec == NULL)
+ break;
+ if ((sym_sec->flags & SEC_CODE) != 0)
+ {
+ if ((insn & ((0x3f << 26) | (0x1f << 21)))
+ == (((int) OP_ADDIL << 26) | (27 << 21)))
+ {
+ insn &= ~ (0x1f << 21);
+#if 1 /* debug them */
+ (*_bfd_error_handler)
+ (_("%s(%s+0x%lx): fixing %s"),
+ bfd_get_filename (input_bfd),
+ input_section->name,
+ (long) rel->r_offset,
+ howto->name);
+#endif
+ }
+ /* Now try to make things easy for the dynamic linker. */
+
+ break;
+ }
+ /* Fall thru */
+
+ case R_PARISC_DLTIND21L:
+ case R_PARISC_DLTIND14R:
+ case R_PARISC_DLTIND14F:
+ value -= elf_gp (input_section->output_section->owner);
+ break;
+
+ default:
+ break;
+ }
+
+ switch (r_type)
+ {
+ case R_PARISC_DIR32:
+ case R_PARISC_DIR17F:
+ case R_PARISC_PCREL17C:
+ case R_PARISC_PCREL14F:
+ case R_PARISC_DPREL14F:
+ case R_PARISC_PLABEL32:
+ case R_PARISC_DLTIND14F:
+ case R_PARISC_SEGBASE:
+ case R_PARISC_SEGREL32:
+ r_field = e_fsel;
+ break;
+
+ case R_PARISC_DIR21L:
+ case R_PARISC_PCREL21L:
+ case R_PARISC_DPREL21L:
+ case R_PARISC_PLABEL21L:
+ case R_PARISC_DLTIND21L:
+ r_field = e_lrsel;
+ break;
+
+ case R_PARISC_DIR17R:
+ case R_PARISC_PCREL17R:
+ case R_PARISC_DIR14R:
+ case R_PARISC_PCREL14R:
+ case R_PARISC_DPREL14R:
+ case R_PARISC_PLABEL14R:
+ case R_PARISC_DLTIND14R:
+ r_field = e_rrsel;
+ break;
+
+ case R_PARISC_PCREL12F:
+ case R_PARISC_PCREL17F:
+ case R_PARISC_PCREL22F:
+ r_field = e_fsel;
+
+ if (r_type == (unsigned int) R_PARISC_PCREL17F)
+ {
+ max_branch_offset = (1 << (17-1)) << 2;
+ }
+ else if (r_type == (unsigned int) R_PARISC_PCREL12F)
+ {
+ max_branch_offset = (1 << (12-1)) << 2;
+ }
+ else
+ {
+ max_branch_offset = (1 << (22-1)) << 2;
+ }
+
+ /* sym_sec is NULL on undefined weak syms or when shared on
+ undefined syms. We've already checked for a stub for the
+ shared undefined case. */
+ if (sym_sec == NULL)
+ break;
+
+ /* If the branch is out of reach, then redirect the
+ call to the local stub for this function. */
+ if (value + addend + max_branch_offset >= 2*max_branch_offset)
+ {
+ stub_entry = hppa_get_stub_entry (input_section, sym_sec,
+ h, rel, info);
+ if (stub_entry == NULL)
+ return bfd_reloc_notsupported;
+
+ /* Munge up the value and addend so that we call the stub
+ rather than the procedure directly. */
+ value = (stub_entry->stub_offset
+ + stub_entry->stub_sec->output_offset
+ + stub_entry->stub_sec->output_section->vma
+ - location);
+ addend = -8;
+ }
+ break;
+
+ /* Something we don't know how to handle. */
+ default:
+ return bfd_reloc_notsupported;
+ }
+
+ /* Make sure we can reach the stub. */
+ if (max_branch_offset != 0
+ && value + addend + max_branch_offset >= 2*max_branch_offset)
+ {
+ (*_bfd_error_handler)
+ (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"),
+ bfd_get_filename (input_bfd),
+ input_section->name,
+ (long) rel->r_offset,
+ stub_entry->root.string);
+ return bfd_reloc_notsupported;
+ }
+
+ val = hppa_field_adjust (value, addend, r_field);
+
+ switch (r_type)
+ {
+ case R_PARISC_PCREL12F:
+ case R_PARISC_PCREL17C:
+ case R_PARISC_PCREL17F:
+ case R_PARISC_PCREL17R:
+ case R_PARISC_PCREL22F:
+ case R_PARISC_DIR17F:
+ case R_PARISC_DIR17R:
+ /* This is a branch. Divide the offset by four.
+ Note that we need to decide whether it's a branch or
+ otherwise by inspecting the reloc. Inspecting insn won't
+ work as insn might be from a .word directive. */
+ val >>= 2;
+ break;
+
+ default:
+ break;
+ }
+
+ insn = hppa_rebuild_insn (insn, val, r_format);
+
+ /* Update the instruction word. */
+ bfd_put_32 (input_bfd, (unsigned int) insn, hit_data);
+ return bfd_reloc_ok;
+}
+
+
+/* Relocate an HPPA ELF section. */
+
+static boolean
+elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, relocs, local_syms, local_sections)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ bfd *input_bfd;
+ asection *input_section;
+ bfd_byte *contents;
+ Elf_Internal_Rela *relocs;
+ Elf_Internal_Sym *local_syms;
+ asection **local_sections;
+{
+ bfd *dynobj;
+ bfd_vma *local_got_offsets;
+ struct elf32_hppa_link_hash_table *hplink;
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *relend;
+ asection *sreloc;
+
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ local_got_offsets = elf_local_got_offsets (input_bfd);
+ hplink = hppa_link_hash_table (info);
+ sreloc = NULL;
+
+ rel = relocs;
+ relend = relocs + input_section->reloc_count;
+ for (; rel < relend; rel++)
+ {
+ unsigned int r_type;
+ reloc_howto_type *howto;
+ unsigned int r_symndx;
+ struct elf32_hppa_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+ asection *sym_sec;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+ const char *sym_name;
+ boolean pltrel;
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+ if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return false;
+ }
+ if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY
+ || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT)
+ continue;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ if (info->relocateable)
+ {
+ /* This is a relocateable link. We don't have to change
+ anything, unless the reloc is against a section symbol,
+ in which case we have to adjust according to where the
+ section symbol winds up in the output section. */
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
+ {
+ sym_sec = local_sections[r_symndx];
+ rel->r_addend += sym_sec->output_offset;
+ }
+ }
+ continue;
+ }
+
+ /* This is a final link. */
+ h = NULL;
+ sym = NULL;
+ sym_sec = NULL;
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ /* This is a local symbol, h defaults to NULL. */
+ sym = local_syms + r_symndx;
+ sym_sec = local_sections[r_symndx];
+ relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION
+ ? 0 : sym->st_value)
+ + sym_sec->output_offset
+ + sym_sec->output_section->vma);
+ }
+ else
+ {
+ int indx;
+
+ /* It's a global; Find its entry in the link hash. */
+ indx = r_symndx - symtab_hdr->sh_info;
+ h = ((struct elf32_hppa_link_hash_entry *)
+ elf_sym_hashes (input_bfd)[indx]);
+ while (h->elf.root.type == bfd_link_hash_indirect
+ || h->elf.root.type == bfd_link_hash_warning)
+ h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link;
+
+ relocation = 0;
+ if (h->elf.root.type == bfd_link_hash_defined
+ || h->elf.root.type == bfd_link_hash_defweak)
+ {
+ sym_sec = h->elf.root.u.def.section;
+ /* If sym_sec->output_section is NULL, then it's a
+ symbol defined in a shared library. */
+ if (sym_sec->output_section != NULL)
+ relocation = (h->elf.root.u.def.value
+ + sym_sec->output_offset
+ + sym_sec->output_section->vma);
+ }
+ else if (h->elf.root.type == bfd_link_hash_undefweak)
+ ;
+ else if (info->shared && !info->no_undefined
+ && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT)
+ {
+ if (info->symbolic)
+ if (!((*info->callbacks->undefined_symbol)
+ (info, h->elf.root.root.string, input_bfd,
+ input_section, rel->r_offset, false)))
+ return false;
+ }
+ else
+ {
+ if (!((*info->callbacks->undefined_symbol)
+ (info, h->elf.root.root.string, input_bfd,
+ input_section, rel->r_offset, true)))
+ return false;
+ }
+ }
+
+ /* Do any required modifications to the relocation value, and
+ determine what types of dynamic info we need to output, if
+ any. */
+ pltrel = 0;
+ switch (r_type)
+ {
+ case R_PARISC_DLTIND14F:
+ case R_PARISC_DLTIND14R:
+ case R_PARISC_DLTIND21L:
+ /* Relocation is to the entry for this symbol in the global
+ offset table. */
+ if (h != NULL)
+ {
+ bfd_vma off;
+
+ off = h->elf.got.offset;
+ BFD_ASSERT (off != (bfd_vma) -1);
+
+ if (! elf_hash_table (info)->dynamic_sections_created
+ || (info->shared
+ && (info->symbolic || h->elf.dynindx == -1)
+ && (h->elf.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) != 0))
+ {
+ /* This is actually a static link, or it is a
+ -Bsymbolic link and the symbol is defined
+ locally, or the symbol was forced to be local
+ because of a version file. We must initialize
+ this entry in the global offset table. Since the
+ offset must always be a multiple of 4, we use the
+ least significant bit to record whether we have
+ initialized it already.
+
+ When doing a dynamic link, we create a .rela.got
+ relocation entry to initialize the value. This
+ is done in the finish_dynamic_symbol routine. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_32 (output_bfd, relocation,
+ hplink->sgot->contents + off);
+ h->elf.got.offset |= 1;
+ }
+ }
+
+ relocation = off;
+ }
+ else
+ {
+ /* Local symbol case. */
+ bfd_vma off;
+
+ BFD_ASSERT (local_got_offsets != NULL
+ && local_got_offsets[r_symndx] != (bfd_vma) -1);
+
+ off = local_got_offsets[r_symndx];
+
+ /* The offset must always be a multiple of 4. We use
+ the least significant bit to record whether we have
+ already generated the necessary reloc. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_32 (output_bfd, relocation,
+ hplink->sgot->contents + off);
+
+ if (info->shared)
+ {
+ /* Output a dynamic SEGREL32 relocation for this
+ GOT entry. In this case it is relative to
+ the base of the object because the symbol
+ index is zero. */
+ Elf_Internal_Rela outrel;
+ asection *srelgot = hplink->srelgot;
+
+ outrel.r_offset = (off
+ + hplink->sgot->output_offset
+ + hplink->sgot->output_section->vma);
+ outrel.r_info = ELF32_R_INFO (0, R_PARISC_SEGREL32);
+ outrel.r_addend = relocation;
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel,
+ ((Elf32_External_Rela *)
+ srelgot->contents
+ + srelgot->reloc_count));
+ ++srelgot->reloc_count;
+ }
- /* Now that we have argument location information for all the
- global functions we can start looking for stubs. */
- for (input_bfd = link_info->input_bfds, indx = 0, sec_count = 0;
- input_bfd != NULL;
- input_bfd = input_bfd->link_next, indx++)
- {
- Elf_Internal_Shdr *symtab_hdr;
+ local_got_offsets[r_symndx] |= 1;
+ }
- /* We'll need the symbol table in a second. */
- symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
- if (symtab_hdr->sh_info == 0)
- continue;
+ relocation = off;
+ }
- local_syms = all_local_syms[indx];
+ /* Add the base of the GOT to the relocation value. */
+ relocation += (hplink->sgot->output_offset
+ + hplink->sgot->output_section->vma);
+ break;
- /* Walk over each section attached to the input bfd. */
- for (section = input_bfd->sections;
- section != NULL;
- section = section->next, sec_count++)
+ case R_PARISC_PLABEL14R:
+ case R_PARISC_PLABEL21L:
+ case R_PARISC_PLABEL32:
+ /* If we have a global symbol with a PLT slot, then redirect
+ this relocation to it. */
+ if (h != NULL
+ && h->elf.dynindx != -1
+ && h->elf.plt.offset != (bfd_vma) -1)
{
- Elf_Internal_Shdr *input_rel_hdr;
- Elf32_External_Rela *external_relocs, *erelaend, *erela;
- Elf_Internal_Rela *internal_relocs, *irelaend, *irela;
+ /* PLABELs contain function pointers. Relocation is
+ to the entry for the function in the .plt. The
+ magic +2 offset signals to $$dyncall that the
+ function pointer is in the .plt and thus has a gp
+ pointer too. */
+ relocation = (h->elf.plt.offset
+ + hplink->splt->output_offset
+ + hplink->splt->output_section->vma
+ + 2);
+ pltrel = 1;
+ }
+ /* Fall through and possibly emit a dynamic relocation. */
+
+ case R_PARISC_DIR17F:
+ case R_PARISC_DIR17R:
+ case R_PARISC_DIR14R:
+ case R_PARISC_DIR21L:
+ case R_PARISC_DPREL14F:
+ case R_PARISC_DPREL14R:
+ case R_PARISC_DPREL21L:
+ case R_PARISC_DIR32:
+ /* The reloc types handled here and this conditional
+ expression must match the code in check_relocs and
+ hppa_discard_copies. ie. We need exactly the same
+ condition as in check_relocs, with some extra conditions
+ (dynindx test in this case) to cater for relocs removed
+ by hppa_discard_copies. */
+ if ((input_section->flags & SEC_ALLOC) != 0
+ && info->shared
+#if RELATIVE_DYNAMIC_RELOCS
+ && (is_absolute_reloc (r_type)
+ || ((!info->symbolic
+ || (h != NULL
+ && ((h->elf.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0
+ || h->elf.root.type == bfd_link_hash_defweak)))
+ && (h == NULL || h->elf.dynindx != -1)))
+#endif
+ )
+ {
+ Elf_Internal_Rela outrel;
+ boolean skip;
- /* If there aren't any relocs, then there's nothing to do. */
- if ((section->flags & SEC_RELOC) == 0
- || section->reloc_count == 0)
- continue;
+ /* When generating a shared object, these relocations
+ are copied into the output file to be resolved at run
+ time. */
- /* Allocate space for the external relocations. */
- external_relocs
- = ((Elf32_External_Rela *)
- bfd_malloc (section->reloc_count
- * sizeof (Elf32_External_Rela)));
- if (external_relocs == NULL)
+ if (sreloc == NULL)
{
- goto error_ret_free_local;
+ const char *name;
+
+ name = (bfd_elf_string_from_elf_section
+ (input_bfd,
+ elf_elfheader (input_bfd)->e_shstrndx,
+ elf_section_data (input_section)->rel_hdr.sh_name));
+ if (name == NULL)
+ return false;
+ sreloc = bfd_get_section_by_name (dynobj, name);
+ BFD_ASSERT (sreloc != NULL);
}
- /* Likewise for the internal relocations. */
- internal_relocs = ((Elf_Internal_Rela *)
- bfd_malloc (section->reloc_count
- * sizeof (Elf_Internal_Rela)));
- if (internal_relocs == NULL)
+ outrel.r_offset = rel->r_offset;
+ outrel.r_addend = rel->r_addend;
+ skip = false;
+ if (elf_section_data (input_section)->stab_info != NULL)
{
- free (external_relocs);
- goto error_ret_free_local;
+ bfd_vma off;
+
+ off = (_bfd_stab_section_offset
+ (output_bfd, &elf_hash_table (info)->stab_info,
+ input_section,
+ &elf_section_data (input_section)->stab_info,
+ rel->r_offset));
+ if (off == (bfd_vma) -1)
+ skip = true;
+ outrel.r_offset = off;
}
- /* Read in the external relocs. */
- input_rel_hdr = &elf_section_data (section)->rel_hdr;
- if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0
- || bfd_read (external_relocs, 1,
- input_rel_hdr->sh_size,
- input_bfd) != input_rel_hdr->sh_size)
+ outrel.r_offset += (input_section->output_offset
+ + input_section->output_section->vma);
+
+ if (skip)
{
- free (external_relocs);
- error_ret_free_internal:
- free (internal_relocs);
- goto error_ret_free_local;
+ memset (&outrel, 0, sizeof (outrel));
}
-
- /* Swap in the relocs. */
- erela = external_relocs;
- erelaend = erela + section->reloc_count;
- irela = internal_relocs;
- for (; erela < erelaend; erela++, irela++)
- bfd_elf32_swap_reloca_in (input_bfd, erela, irela);
-
- /* We're done with the external relocs, free them. */
- free (external_relocs);
-
- /* Now examine each relocation. */
- irela = internal_relocs;
- irelaend = irela + section->reloc_count;
- for (; irela < irelaend; irela++)
+ else if (!pltrel
+ && h != NULL
+ && ((!info->symbolic && h->elf.dynindx != -1)
+ || (h->elf.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))
{
- unsigned int r_type, r_indx, size_of_stub;
- struct elf32_hppa_stub_hash_entry *stub_entry;
- asection *sym_sec;
- const char *sym_name;
- symvalue sym_value;
- bfd_vma destination;
- struct elf_link_hash_entry *hash;
- char *stub_name;
+ outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type);
+ }
+ else /* It's a local symbol, or one marked to become local. */
+ {
+ int indx = 0;
- r_type = ELF32_R_TYPE (irela->r_info);
- r_indx = ELF32_R_SYM (irela->r_info);
+ /* Add the absolute offset of the symbol. */
+ outrel.r_addend += relocation;
- if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED)
+ if (sym_sec != NULL
+ && sym_sec->output_section != NULL
+ && ! bfd_is_abs_section (sym_sec))
{
- bfd_set_error (bfd_error_bad_value);
- goto error_ret_free_internal;
+ indx = elf_section_data (sym_sec->output_section)->dynindx;
+ /* We are turning this relocation into one
+ against a section symbol, so subtract out the
+ output section's address but not the offset
+ of the input section in the output section. */
+ outrel.r_addend -= sym_sec->output_section->vma;
}
- /* Only look for stubs on call instructions. */
- if (r_type != (unsigned int) R_PARISC_PCREL17F)
- continue;
+ outrel.r_info = ELF32_R_INFO (indx, r_type);
+ }
- /* Now determine the call target, its name, value, section
- and argument relocation bits. */
- sym_sec = NULL;
- hash = NULL;
- if (r_indx < symtab_hdr->sh_info)
- {
- /* It's a local symbol. */
- Elf_Internal_Sym *sym;
- Elf_Internal_Shdr *hdr;
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel,
+ ((Elf32_External_Rela *)
+ sreloc->contents
+ + sreloc->reloc_count));
+ ++sreloc->reloc_count;
+ }
+ break;
- sym = local_syms + r_indx;
- hdr = elf_elfsections (input_bfd)[sym->st_shndx];
- sym_sec = hdr->bfd_section;
- sym_name =
- bfd_elf_string_from_elf_section (input_bfd,
- symtab_hdr->sh_link,
- sym->st_name);
- sym_value = (ELF_ST_TYPE (sym->st_info) == STT_SECTION
- ? 0 : sym->st_value);
- destination = (sym_value + irela->r_addend
- + sym_sec->output_offset
- + sym_sec->output_section->vma);
- }
- else
- {
- /* It's an external symbol. */
- int e_indx;
+ default:
+ break;
+ }
- e_indx = r_indx - symtab_hdr->sh_info;
- hash = elf_sym_hashes (input_bfd)[e_indx];
+ r = final_link_relocate (input_section, contents, rel, relocation,
+ info, sym_sec, h);
- while (hash->root.type == bfd_link_hash_indirect
- || hash->root.type == bfd_link_hash_warning)
- hash = (struct elf_link_hash_entry *)
- hash->root.u.i.link;
+ if (r == bfd_reloc_ok)
+ continue;
- if (hash->root.type == bfd_link_hash_undefined
- || hash->root.type == bfd_link_hash_undefweak)
- continue;
+ if (h != NULL)
+ sym_name = h->elf.root.root.string;
+ else
+ {
+ sym_name = bfd_elf_string_from_elf_section (input_bfd,
+ symtab_hdr->sh_link,
+ sym->st_name);
+ if (sym_name == NULL)
+ return false;
+ if (*sym_name == '\0')
+ sym_name = bfd_section_name (input_bfd, sym_sec);
+ }
- if (hash->root.type == bfd_link_hash_defined
- || hash->root.type == bfd_link_hash_defweak)
- {
- sym_sec = hash->root.u.def.section;
- sym_name = hash->root.root.string;
- sym_value = hash->root.u.def.value;
- destination = (sym_value + irela->r_addend
- + sym_sec->output_offset
- + sym_sec->output_section->vma);
- }
- else
- {
- bfd_set_error (bfd_error_bad_value);
- goto error_ret_free_internal;
- }
- }
+ howto = elf_hppa_howto_table + r_type;
- /* Determine what (if any) linker stub is needed and its
- size (in bytes). */
- size_of_stub = elf32_hppa_size_of_stub (section,
- irela->r_offset,
- destination);
- if (size_of_stub == 0)
- continue;
+ if (r == bfd_reloc_undefined || r == bfd_reloc_notsupported)
+ {
+ (*_bfd_error_handler)
+ (_("%s(%s+0x%lx): cannot handle %s for %s"),
+ bfd_get_filename (input_bfd),
+ input_section->name,
+ (long) rel->r_offset,
+ howto->name,
+ sym_name);
+ }
+ else
+ {
+ if (!((*info->callbacks->reloc_overflow)
+ (info, sym_name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset)))
+ return false;
+ }
+ }
- /* Get the name of this stub. */
- stub_name = elf32_hppa_stub_name (sym_name,
- sym_sec,
- section,
- irela->r_addend,
- hash);
- if (!stub_name)
- goto error_ret_free_internal;
+ return true;
+}
- stub_entry = elf32_hppa_stub_hash_lookup (stub_hash_table,
- stub_name,
- false,
- false);
- if (stub_entry != NULL)
- {
- /* The proper stub has already been created. */
- free (stub_name);
- continue;
- }
- stub_sec = stub_section_created[sec_count];
- if (stub_sec == NULL)
- {
- char *s_name;
- int nstub;
- int special_sec = 0;
-
- /* We only want one stub for .init and .fini
- because glibc splits the _init and _fini
- functions into two parts. We don't want to
- put a stub in the middle of a function. */
- if (strncmp (section->name, ".init", 5) == 0)
- {
- stub_sec = first_init_sec;
- special_sec = 1;
- }
- else if (strncmp (section->name, ".fini", 5) == 0)
- {
- stub_sec = first_fini_sec;
- special_sec = 2;
- }
- if (stub_sec == NULL)
- {
- s_name = bfd_alloc (stub_bfd, 16);
- if (s_name == NULL)
- {
- free (stub_name);
- goto error_ret_free_internal;
- }
- nstub = stub_bfd->section_count;
- sprintf (s_name, ".stub_%x", nstub);
- stub_sec = (*add_stub_section) (s_name, section);
- if (stub_sec == NULL)
- {
- free (stub_name);
- goto error_ret_free_internal;
- }
- if (special_sec != 0)
- {
- if (special_sec == 1)
- first_init_sec = stub_sec;
- else
- first_fini_sec = stub_sec;
- }
- }
- stub_section_created[sec_count] = stub_sec;
- }
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
- /* Enter this entry into the linker stub
- hash table. */
- stub_entry = elf32_hppa_stub_hash_lookup (stub_hash_table,
- stub_name,
- true,
- false);
- if (stub_entry == NULL)
- {
- (*_bfd_error_handler)
- (_("%s: cannot find stub entry %s"),
- bfd_get_filename (section->owner),
- stub_name);
- free (stub_name);
- goto error_ret_free_internal;
- }
+static boolean
+elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+{
+ struct elf32_hppa_link_hash_table *hplink;
+ bfd *dynobj;
- /* We'll need these to determine the address
- that the stub will branch to. */
- stub_entry->stub_sec = stub_sec;
- stub_entry->offset = 0;
- stub_entry->target_value = sym_value;
- stub_entry->target_section = sym_sec;
- stub_changed = 1;
- }
- /* We're done with the internal relocs, free them. */
- free (internal_relocs);
- }
+ hplink = hppa_link_hash_table (info);
+ dynobj = elf_hash_table (info)->dynobj;
+
+ /* Millicode symbols should not be put in the dynamic
+ symbol table under any circumstances. */
+ if (ELF_ST_TYPE (sym->st_info) == STT_PARISC_MILLI)
+ h->dynindx = -1;
+
+ if (h->plt.offset != (bfd_vma) -1)
+ {
+ bfd_vma value;
+ Elf_Internal_Rela rel;
+
+ /* This symbol has an entry in the procedure linkage table. Set
+ it up.
+
+ The format of a plt entry is
+ <funcaddr> <__gp>. */
+
+ /* We do not actually care about the value in the PLT entry if
+ we are creating a shared library and the symbol is still
+ undefined; We create a dynamic relocation to fill in the
+ correct value. */
+ value = 0;
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ value = h->root.u.def.value;
+ if (h->root.u.def.section->output_section != NULL)
+ value += (h->root.u.def.section->output_offset
+ + h->root.u.def.section->output_section->vma);
}
- if (!stub_changed)
- break;
+ bfd_put_32 (hplink->splt->owner, value,
+ hplink->splt->contents + h->plt.offset);
+ value = elf_gp (hplink->splt->output_section->owner);
+ bfd_put_32 (hplink->splt->owner, value,
+ hplink->splt->contents + h->plt.offset + 4);
- /* OK, we've added some stubs. Find out the new size of the
- stub sections. */
- hppa_link_hash = elf32_hppa_hash_table (link_info);
- hppa_link_hash->offset = (bfd_vma *)
- bfd_realloc (hppa_link_hash->offset,
- stub_bfd->section_count * sizeof (bfd_vma));
- if (hppa_link_hash->offset == NULL)
- goto error_ret_free_local;
+ if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call
+ && h->dynindx != -1)
+ {
+ /* Create a dynamic IPLT relocation for this entry. */
+ rel.r_offset = (h->plt.offset
+ + hplink->splt->output_offset
+ + hplink->splt->output_section->vma);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT);
+ rel.r_addend = 0;
+
+ bfd_elf32_swap_reloca_out (hplink->splt->output_section->owner,
+ &rel,
+ ((Elf32_External_Rela *)
+ hplink->srelplt->contents
+ + hplink->srelplt->reloc_count));
+ hplink->srelplt->reloc_count++;
+ }
+
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ {
+ /* Mark the symbol as undefined, rather than as defined in
+ the .plt section. Leave the value alone. */
+ sym->st_shndx = SHN_UNDEF;
+ }
+ }
- memset (hppa_link_hash->offset, 0,
- stub_bfd->section_count * sizeof (bfd_vma));
+ if (h->got.offset != (bfd_vma) -1)
+ {
+ Elf_Internal_Rela rel;
+
+ /* This symbol has an entry in the global offset table. Set it
+ up. */
+
+ rel.r_offset = ((h->got.offset &~ (bfd_vma) 1)
+ + hplink->sgot->output_offset
+ + hplink->sgot->output_section->vma);
+
+ /* If this is a static link, or it is a -Bsymbolic link and the
+ symbol is defined locally or was forced to be local because
+ of a version file, we just want to emit a RELATIVE reloc.
+ The entry in the global offset table will already have been
+ initialized in the relocate_section function. */
+ if (! elf_hash_table (info)->dynamic_sections_created
+ || (info->shared
+ && (info->symbolic || h->dynindx == -1)
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
+ {
+ rel.r_info = ELF32_R_INFO (0, R_PARISC_SEGREL32);
+ rel.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_offset
+ + h->root.u.def.section->output_section->vma);
+ }
+ else
+ {
+ BFD_ASSERT((h->got.offset & 1) == 0);
+ bfd_put_32 (output_bfd, (bfd_vma) 0,
+ hplink->sgot->contents + h->got.offset);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32);
+ rel.r_addend = 0;
+ }
- bfd_hash_traverse (stub_hash_table,
- elf32_hppa_size_one_stub,
- hppa_link_hash);
+ bfd_elf32_swap_reloca_out (output_bfd, &rel,
+ ((Elf32_External_Rela *)
+ hplink->srelgot->contents
+ + hplink->srelgot->reloc_count));
+ ++hplink->srelgot->reloc_count;
+ }
- for (stub_sec = stub_bfd->sections;
- stub_sec != NULL;
- stub_sec = stub_sec->next)
+ if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
+ {
+ asection *s;
+ Elf_Internal_Rela rel;
+
+ /* This symbol needs a copy reloc. Set it up. */
+
+ BFD_ASSERT (h->dynindx != -1
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak));
+
+ s = hplink->srelbss;
+
+ rel.r_offset = (h->root.u.def.value
+ + h->root.u.def.section->output_offset
+ + h->root.u.def.section->output_section->vma);
+ rel.r_addend = 0;
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY);
+ bfd_elf32_swap_reloca_out (output_bfd, &rel,
+ ((Elf32_External_Rela *) s->contents
+ + s->reloc_count));
+ ++s->reloc_count;
+ }
+
+ /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
+ if (h->root.root.string[0] == '_'
+ && (strcmp (h->root.root.string, "_DYNAMIC") == 0
+ || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0))
+ {
+ sym->st_shndx = SHN_ABS;
+ }
+
+ return true;
+}
+
+
+/* Finish up the dynamic sections. */
+
+static boolean
+elf32_hppa_finish_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
+{
+ bfd *dynobj;
+ struct elf32_hppa_link_hash_table *hplink;
+ asection *sdyn;
+
+ dynobj = elf_hash_table (info)->dynobj;
+ hplink = hppa_link_hash_table (info);
+
+ sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+
+ if (elf_hash_table (info)->dynamic_sections_created)
+ {
+ Elf32_External_Dyn *dyncon, *dynconend;
+
+ BFD_ASSERT (sdyn != NULL);
+
+ dyncon = (Elf32_External_Dyn *) sdyn->contents;
+ dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ for (; dyncon < dynconend; dyncon++)
{
- bfd_set_section_size (stub_bfd, stub_sec,
- hppa_link_hash->offset[stub_sec->index]);
+ Elf_Internal_Dyn dyn;
+ asection *s;
+
+ bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
+
+ switch (dyn.d_tag)
+ {
+ default:
+ break;
+
+ case DT_PLTGOT:
+ /* Use PLTGOT to set the GOT register. */
+ dyn.d_un.d_ptr = elf_gp (output_bfd);
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_JMPREL:
+ s = hplink->srelplt;
+ dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+
+ case DT_PLTRELSZ:
+ s = hplink->srelplt;
+ if (s->_cooked_size != 0)
+ dyn.d_un.d_val = s->_cooked_size;
+ else
+ dyn.d_un.d_val = s->_raw_size;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
+ }
}
- /* Ask the linker to do its stuff. */
- (*layout_sections_again) ();
}
- /* We're done with the local symbols, free them. */
- for (i = 0; i < bfd_count; i++)
- if (all_local_syms[i])
- free (all_local_syms[i]);
- free (all_local_syms);
- free (stub_section_created);
+ /* Fill in the first entry in the global offset table.
+ We use it to point to our dynamic section, if we have one. */
+ if (hplink->sgot->_raw_size != 0)
+ {
+ bfd_put_32 (output_bfd,
+ (sdyn != NULL
+ ? sdyn->output_section->vma + sdyn->output_offset
+ : (bfd_vma) 0),
+ hplink->sgot->contents);
+
+ /* Set .got entry size. */
+ elf_section_data (hplink->sgot->output_section)->this_hdr.sh_entsize = 4;
+ }
+
+ /* Set plt entry size. */
+ if (hplink->splt->_raw_size != 0)
+ elf_section_data (hplink->splt->output_section)->this_hdr.sh_entsize = 8;
+
return true;
+}
- error_ret_free_local:
- for (i = 0; i < bfd_count; i++)
- if (all_local_syms[i])
- free (all_local_syms[i]);
- free (all_local_syms);
- error_ret_free_stub:
- free (stub_section_created);
- return false;
+/* Called when writing out an object file to decide the type of a
+ symbol. */
+static int
+elf32_hppa_elf_get_symbol_type (elf_sym, type)
+ Elf_Internal_Sym *elf_sym;
+ int type;
+{
+ if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI)
+ return STT_PARISC_MILLI;
+ else
+ return type;
}
+
/* Misc BFD support code. */
-#define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
-#define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
-#define elf_info_to_howto elf_hppa_info_to_howto
-#define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
+#define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name
+#define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
+#define elf_info_to_howto elf_hppa_info_to_howto
+#define elf_info_to_howto_rel elf_hppa_info_to_howto_rel
/* Stuff for the BFD linker. */
-#define elf_backend_relocate_section elf32_hppa_relocate_section
-#define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook
-#define bfd_elf32_bfd_final_link elf32_hppa_final_link
-#if 0
-#define elf_backend_check_relocs elf32_hppa_check_relocs
-#endif
-#define bfd_elf32_bfd_link_hash_table_create \
- elf32_hppa_link_hash_table_create
-#define elf_backend_fake_sections elf_hppa_fake_sections
-
+#define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link
+#define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create
+#define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook
+#define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol
+#define elf_backend_check_relocs elf32_hppa_check_relocs
+#define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections
+#define elf_backend_fake_sections elf_hppa_fake_sections
+#define elf_backend_relocate_section elf32_hppa_relocate_section
+#define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections
+#define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections
+#define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook
+#define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook
+#define elf_backend_object_p elf32_hppa_object_p
+#define elf_backend_final_write_processing elf_hppa_final_write_processing
+#define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type
+
+#define elf_backend_can_gc_sections 1
+#define elf_backend_plt_alignment 2
+#define elf_backend_want_got_plt 0
+#define elf_backend_plt_readonly 0
+#define elf_backend_want_plt_sym 0
+#define elf_backend_got_header_size 4
#define TARGET_BIG_SYM bfd_elf32_hppa_vec
#define TARGET_BIG_NAME "elf32-hppa"
projects / binutils-gdb.git / commitdiff