/* BFD back-end for HP PA-RISC ELF files.
- Copyright (C) 1990, 91, 92, 93, 94 Free Software Foundation, Inc.
-
- Written by
+ Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001
+ Free Software Foundation, Inc.
+ 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.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
#include "libbfd.h"
-#include "obstack.h"
-#include "bfdlink.h"
-#include "libelf.h"
-
-/* Note there isn't much error handling code in here yet. Unexpected
- conditions are handled by just calling abort. FIXME damnit! */
-
-/* ELF32/HPPA relocation support
-
- This file contains ELF32/HPPA relocation support as specified
- in the Stratus FTX/Golf Object File Format (SED-1762) dated
- November 19, 1992. */
-
-#include "elf32-hppa.h"
+#include "elf-bfd.h"
+#include "elf/hppa.h"
#include "libhppa.h"
-#include "aout/aout64.h"
-#include "hppa_stubs.h"
+#include "elf32-hppa.h"
+#define ARCH_SIZE 32
+#include "elf-hppa.h"
+#include "elf32-hppa.h"
-/* The basic stub types supported. If/when shared libraries are
- implemented some form of IMPORT and EXPORT stubs will be needed. */
-typedef enum
+/* In order to gain some understanding of code in this file without
+ knowing all the intricate details of the linker, note the
+ following:
+
+ 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. */
+
+/* We use two hash tables to hold information for linking PA ELF objects.
+
+ The first is the elf32_hppa_link_hash_table which is derived
+ from the standard ELF linker hash table. We use this as a place to
+ attach other hash tables and static information.
+
+ 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.
+
+ 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 LR'X - ($PIC_pcrel$0 - 4),%r1
+ : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1)
+
+ Import stub to call shared library routine from normal object file
+ (single sub-space version)
+ : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
+ : ldw RR'lt_ptr+ltoff(%r1),%r21
+ : bv %r0(%r21)
+ : ldw RR'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 LR'ltoff,%r19 ; get procedure entry point
+ : ldw RR'ltoff(%r1),%r21
+ : bv %r0(%r21)
+ : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value.
+
+ Import stub to call shared library routine from normal object file
+ (multiple sub-space support)
+ : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point
+ : ldw RR'lt_ptr+ltoff(%r1),%r21
+ : ldw RR'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 LR'ltoff,%r19 ; get procedure entry point
+ : ldw RR'ltoff(%r1),%r21
+ : ldw RR'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 PLABEL_PLT_ENTRY_SIZE PLT_ENTRY_SIZE
+#define GOT_ENTRY_SIZE 4
+#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
+
+static const bfd_byte plt_stub[] =
{
- HPPA_STUB_ILLEGAL,
- HPPA_STUB_ARG_RELOC,
- HPPA_STUB_LONG_CALL,
-} hppa_stub_type;
+ 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */
+ 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */
+ 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */
+#define PLT_STUB_ENTRY (3*4)
+ 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */
+ 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */
+ 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */
+ 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */
+};
-/* This is a list of all the stubs for a particular BFD. */
+/* 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
+
+/* Set this non-zero to use import stubs instead of long branch stubs
+ where a .plt entry exists for the symbol. This is a fairly useless
+ option as import stubs are bigger than PIC long branch stubs. */
+#ifndef LONG_BRANCH_VIA_PLT
+#define LONG_BRANCH_VIA_PLT 0
+#endif
+
+/* We don't need to copy any PC- or GP-relative dynamic relocs into a
+ shared object's dynamic section. All the relocs of the limited
+ class we are interested in, are absolute. See check_relocs. */
+#ifndef IS_ABSOLUTE_RELOC
+#define IS_ABSOLUTE_RELOC(r_type) 1
+#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
+};
-typedef struct elf32_hppa_stub_name_list_struct
-{
- /* The symbol associated with this stub. */
- asymbol *sym;
- /* Pointer to chain of all stub chains. */
- struct elf32_hppa_stub_description_struct *stub_desc;
- /* Pointer to the stub contents (eg instructions). */
- int *stub_secp;
- /* Size of this stub? (in what units? FIXME). */
- unsigned size;
- /* Pointer to the next stub entry in the chain. */
- struct elf32_hppa_stub_name_list_struct *next;
-} elf32_hppa_stub_name_list;
-
-/* This is a linked list in which each entry describes all the
- linker stubs for a particular bfd. */
-
-typedef struct elf32_hppa_stub_description_struct
-{
- /* The next group of stubs. */
- struct elf32_hppa_stub_description_struct *next;
- /* Used to identify this group of stubs as belonging
- to a particular bfd. */
- bfd *this_bfd;
- /* FIXME: The stub section for this group of stubs? Is
- this redundant with stub_listP->sym->section? */
+struct elf32_hppa_stub_hash_entry {
+
+ /* Base hash table entry structure. */
+ struct bfd_hash_entry root;
+
+ /* The stub section. */
asection *stub_sec;
- /* FIXME: what the hell is this? */
- unsigned relocs_allocated_cnt;
- /* The current real size of the stubs (in bytes?). */
- unsigned real_size;
- /* How much space we have allocated for stubs (in bytes?). */
- unsigned allocated_size;
- /* Pointer to the first available space for new stubs. */
- int *stub_secp;
- /* Pointer to the beginning of the stubs. FIXME: Why an int *
- above and a char * here? */
- char *stub_contents;
- /* The list of stubs for this bfd. */
- elf32_hppa_stub_name_list *stub_listP;
- /* I guess we just carry this around for fun. */
- struct bfd_link_info *link_info;
-} elf32_hppa_stub_description;
-
-/* FIXME. */
-#define ARGUMENTS 0
-#define RETURN_VALUE 1
-
-/* The various argument relocations that may be performed.
- Note GRX,GRY really means ARGX,ARGY. */
-typedef enum
-{
- /* No relocation. */
- NO_ARG_RELOC,
- /* Relocate 32 bits from general to FP register. */
- R_TO_FR,
- /* Relocate 64 bits from arg0,arg1 to FParg1. */
- R01_TO_FR,
- /* Relocate 64 bits from arg2,arg3 to FParg3. */
- R23_TO_FR,
- /* Relocate 32 bits from FP to general register. */
- FR_TO_R,
- /* Relocate 64 bits from FParg1 to arg0,arg1. */
- FR_TO_R01,
- /* Relocate 64 bits from FParg3 to arg2,arg3. */
- FR_TO_R23,
- /* Death. */
- ARG_RELOC_ERR,
-} arg_reloc_type;
-
-/* Where (what register type) is an argument comming from? */
-typedef enum
-{
- /* Not in a register. */
- AR_NO,
- /* In a general argument register. */
- AR_GR,
- /* In right half of a FP argument register. */
- AR_FR,
- /* In upper (left) half of a FP argument register. */
- AR_FU,
- /* In general argument register pair 0 (arg0, arg1). */
- AR_DBL01,
- /* In general argument register pair 1 (arg2, arg3). */
- AR_DBL23,
-} arg_location;
-
-/* What is being relocated (eg which argument or the return value). */
-typedef enum
-{
- ARG0, ARG1, ARG2, ARG3, RETVAL,
-} arg_reloc_location;
-
-/* Horizontal represents callee's argument location information, vertical
- represents caller's argument location information. Value at a particular
- X, Y location represents what (if any) argument relocation needs to
- be performed to make caller and callee agree. */
-static CONST arg_reloc_type mismatches[6][6] =
-{
- {NO_ARG_RELOC, NO_ARG_RELOC, NO_ARG_RELOC, ARG_RELOC_ERR,
- NO_ARG_RELOC, NO_ARG_RELOC},
- {NO_ARG_RELOC, NO_ARG_RELOC, R_TO_FR, ARG_RELOC_ERR,
- R01_TO_FR, ARG_RELOC_ERR},
- {NO_ARG_RELOC, FR_TO_R, NO_ARG_RELOC, ARG_RELOC_ERR,
- ARG_RELOC_ERR, ARG_RELOC_ERR},
- {ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR,
- ARG_RELOC_ERR, ARG_RELOC_ERR},
- {NO_ARG_RELOC, FR_TO_R01, NO_ARG_RELOC, ARG_RELOC_ERR,
- NO_ARG_RELOC, ARG_RELOC_ERR},
- {NO_ARG_RELOC, FR_TO_R23, NO_ARG_RELOC, ARG_RELOC_ERR,
- ARG_RELOC_ERR, NO_ARG_RELOC},
+
+#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 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. */
+ 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, or, in the case of combined
+ stub sections, the first input section in the group. */
+ asection *id_sec;
};
-/* Likewise for the return value. */
-static CONST arg_reloc_type retval_mismatches[6][6] =
-{
- {NO_ARG_RELOC, NO_ARG_RELOC, NO_ARG_RELOC, ARG_RELOC_ERR,
- NO_ARG_RELOC, NO_ARG_RELOC},
- {NO_ARG_RELOC, NO_ARG_RELOC, FR_TO_R, ARG_RELOC_ERR,
- FR_TO_R01, ARG_RELOC_ERR},
- {NO_ARG_RELOC, R_TO_FR, NO_ARG_RELOC, ARG_RELOC_ERR,
- ARG_RELOC_ERR, ARG_RELOC_ERR},
- {ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR,
- ARG_RELOC_ERR, ARG_RELOC_ERR},
- {NO_ARG_RELOC, R01_TO_FR, NO_ARG_RELOC, ARG_RELOC_ERR,
- NO_ARG_RELOC, ARG_RELOC_ERR},
- {NO_ARG_RELOC, R23_TO_FR, NO_ARG_RELOC, ARG_RELOC_ERR,
- ARG_RELOC_ERR, NO_ARG_RELOC},
+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
+
+ /* 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;
+
+ /* Set during a static link if we detect a function is PIC. */
+ unsigned int maybe_pic_call:1;
+
+ /* Set if the only reason we need a .plt entry is for a non-PIC to
+ PIC function call. */
+ unsigned int pic_call:1;
+
+ /* Set if this symbol is used by a plabel reloc. */
+ unsigned int plabel:1;
+
+ /* Set if this symbol is an init or fini function and thus should
+ use an absolute reloc. */
+ unsigned int plt_abs:1;
};
-/* Used for index mapping in symbol-extension sections. */
-struct elf32_hppa_symextn_map_struct
-{
- int old_index;
- bfd *bfd;
- asymbol *sym;
- int new_index;
+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;
+
+ /* Linker call-backs. */
+ asection * (*add_stub_section) PARAMS ((const char *, asection *));
+ void (*layout_sections_again) PARAMS ((void));
+
+ /* Array to keep track of which stub sections have been created, and
+ information on stub grouping. */
+ struct map_stub {
+ /* This is the section to which stubs in the group will be
+ attached. */
+ asection *link_sec;
+ /* The stub section. */
+ asection *stub_sec;
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ /* The stub section's reloc section. */
+ asection *reloc_sec;
+#endif
+ } *stub_group;
+
+ /* Short-cuts to get to dynamic linker sections. */
+ asection *sgot;
+ asection *srelgot;
+ asection *splt;
+ asection *srelplt;
+ asection *sdynbss;
+ asection *srelbss;
+
+ /* Used during a final link to store the base of the text and data
+ segments so that we can perform SEGREL relocations. */
+ bfd_vma text_segment_base;
+ bfd_vma data_segment_base;
+
+ /* Whether we support multiple sub-spaces for shared libs. */
+ unsigned int multi_subspace:1;
+
+ /* Flags set when PCREL12F and PCREL17F branches detected. Used to
+ select suitable defaults for the stub group size. */
+ unsigned int has_12bit_branch:1;
+ unsigned int has_17bit_branch:1;
+
+ /* Set if we need a .plt stub to support lazy dynamic linking. */
+ unsigned int need_plt_stub:1;
};
-static bfd_reloc_status_type hppa_elf_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+/* 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 *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 unsigned long hppa_elf_relocate_insn
- PARAMS ((bfd *, asection *, unsigned long, unsigned long, long,
- long, unsigned long, unsigned long, unsigned long));
+/* 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 void hppa_elf_relocate_unwind_table
- PARAMS ((bfd *, PTR, unsigned long, long, long,
- unsigned long, unsigned long));
+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 elf32_hppa_link_hash_table *));
-static long get_symbol_value PARAMS ((asymbol *));
+static struct elf32_hppa_stub_hash_entry *hppa_add_stub
+ PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *));
-static bfd_reloc_status_type hppa_elf_reloc
- PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd*, char **));
+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 CONST reloc_howto_type * elf_hppa_reloc_type_lookup
- PARAMS ((bfd_arch_info_type *, bfd_reloc_code_real_type));
+static boolean hppa_build_one_stub
+ PARAMS ((struct bfd_hash_entry *, PTR));
-static symext_entryS elf32_hppa_get_sym_extn PARAMS ((bfd *, asymbol *, int));
+static boolean hppa_size_one_stub
+ PARAMS ((struct bfd_hash_entry *, PTR));
-static elf32_hppa_stub_description * find_stubs PARAMS ((bfd *, asection *));
+/* BFD and elf backend functions. */
+static boolean elf32_hppa_object_p PARAMS ((bfd *));
-static elf32_hppa_stub_description * new_stub
- PARAMS ((bfd *, asection *, struct bfd_link_info *));
+static boolean elf32_hppa_add_symbol_hook
+ PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *,
+ const char **, flagword *, asection **, bfd_vma *));
-static arg_reloc_type type_of_mismatch PARAMS ((int, int, int));
+static boolean elf32_hppa_create_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
-static elf32_hppa_stub_name_list * find_stub_by_name
- PARAMS ((bfd *, asection *, char *));
+static boolean elf32_hppa_check_relocs
+ PARAMS ((bfd *, struct bfd_link_info *,
+ asection *, const Elf_Internal_Rela *));
-static elf32_hppa_stub_name_list * add_stub_by_name
- PARAMS ((bfd *, asection *, asymbol *, struct bfd_link_info *));
+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 void hppa_elf_stub_finish PARAMS ((bfd *));
+static boolean elf32_hppa_gc_sweep_hook
+ PARAMS ((bfd *, struct bfd_link_info *,
+ asection *, const Elf_Internal_Rela *));
-static void hppa_elf_stub_reloc
- PARAMS ((elf32_hppa_stub_description *, bfd *, asymbol *, int,
- elf32_hppa_reloc_type));
+static void elf32_hppa_hide_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static int hppa_elf_arg_reloc_needed_p
- PARAMS ((bfd *, arelent *, arg_reloc_type [5], symext_entryS));
+static boolean elf32_hppa_adjust_dynamic_symbol
+ PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static asymbol * hppa_elf_build_linker_stub
- PARAMS ((bfd *, bfd *, struct bfd_link_info *, arelent *,
- arg_reloc_type [5], int, unsigned *, hppa_stub_type));
+static boolean hppa_handle_PIC_calls
+ PARAMS ((struct elf_link_hash_entry *, PTR));
-static void hppa_elf_create_stub_sec
- PARAMS ((bfd *, bfd *, asection **, struct bfd_link_info *));
+static boolean allocate_plt_and_got_and_discard_relocs
+ PARAMS ((struct elf_link_hash_entry *, PTR));
-static int hppa_elf_long_branch_needed_p
- PARAMS ((bfd *, asection *, arelent *, asymbol *, unsigned));
+static boolean clobber_millicode_symbols
+ PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *));
-static boolean hppa_elf_set_section_contents
- PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type));
+static boolean elf32_hppa_size_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
-static void elf_info_to_howto
- PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *));
+static boolean elf32_hppa_final_link
+ PARAMS ((bfd *, struct bfd_link_info *));
-static void elf32_hppa_backend_symbol_processing PARAMS ((bfd *, asymbol *));
+static void hppa_record_segment_addr
+ PARAMS ((bfd *, asection *, PTR));
-static boolean elf32_hppa_backend_section_processing
- PARAMS ((bfd *, Elf32_Internal_Shdr *));
+static bfd_reloc_status_type final_link_relocate
+ PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *,
+ bfd_vma, struct elf32_hppa_link_hash_table *, asection *,
+ struct elf32_hppa_link_hash_entry *));
-static boolean elf32_hppa_backend_symbol_table_processing
- PARAMS ((bfd *, elf_symbol_type *, int));
+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_backend_section_from_shdr
- PARAMS ((bfd *, Elf32_Internal_Shdr *, char *));
+static int hppa_unwind_entry_compare
+ PARAMS ((const PTR, const PTR));
-static boolean elf32_hppa_backend_fake_sections
- PARAMS ((bfd *, Elf_Internal_Shdr *, 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_backend_section_from_bfd_section
- PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *));
+static boolean elf32_hppa_finish_dynamic_sections
+ PARAMS ((bfd *, struct bfd_link_info *));
-/* ELF/PA relocation howto entries. */
+static void elf32_hppa_post_process_headers
+ PARAMS ((bfd *, struct bfd_link_info *));
-static reloc_howto_type elf_hppa_howto_table[ELF_HOWTO_TABLE_SIZE] =
+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 *
+stub_hash_newfunc (entry, table, string)
+ struct bfd_hash_entry *entry;
+ struct bfd_hash_table *table;
+ const char *string;
{
- {R_HPPA_NONE, 0, 3, 19, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_NONE"},
- {R_HPPA_32, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_32"},
- {R_HPPA_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_11"},
- {R_HPPA_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_14"},
- {R_HPPA_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_17"},
-{R_HPPA_L21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_L21"},
-{R_HPPA_R11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_R11"},
-{R_HPPA_R14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_R14"},
-{R_HPPA_R17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_R17"},
- {R_HPPA_LS21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LS21"},
- {R_HPPA_RS11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RS11"},
- {R_HPPA_RS14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RS14"},
- {R_HPPA_RS17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RS17"},
- {R_HPPA_LD21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LD21"},
- {R_HPPA_RD11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RD11"},
- {R_HPPA_RD14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RD14"},
- {R_HPPA_RD17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RD17"},
- {R_HPPA_LR21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LR21"},
- {R_HPPA_RR14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RR14"},
- {R_HPPA_RR17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RR17"},
- {R_HPPA_GOTOFF_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_11"},
- {R_HPPA_GOTOFF_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_14"},
- {R_HPPA_GOTOFF_L21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_L21"},
- {R_HPPA_GOTOFF_R11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_R11"},
- {R_HPPA_GOTOFF_R14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_R14"},
- {R_HPPA_GOTOFF_LS21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_LS21"},
- {R_HPPA_GOTOFF_RS11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RS11"},
- {R_HPPA_GOTOFF_RS14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RS14"},
- {R_HPPA_GOTOFF_LD21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_LD21"},
- {R_HPPA_GOTOFF_RD11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RD11"},
- {R_HPPA_GOTOFF_RD14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RD14"},
- {R_HPPA_GOTOFF_LR21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_LR21"},
- {R_HPPA_GOTOFF_RR14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RR14"},
- {R_HPPA_ABS_CALL_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_11"},
- {R_HPPA_ABS_CALL_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_14"},
- {R_HPPA_ABS_CALL_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_17"},
- {R_HPPA_ABS_CALL_L21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_L21"},
- {R_HPPA_ABS_CALL_R11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_R11"},
- {R_HPPA_ABS_CALL_R14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_R14"},
- {R_HPPA_ABS_CALL_R17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_R17"},
- {R_HPPA_ABS_CALL_LS21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_LS21"},
- {R_HPPA_ABS_CALL_RS11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RS11"},
- {R_HPPA_ABS_CALL_RS14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RS14"},
- {R_HPPA_ABS_CALL_RS17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RS17"},
- {R_HPPA_ABS_CALL_LD21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_LD21"},
- {R_HPPA_ABS_CALL_RD11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RD11"},
- {R_HPPA_ABS_CALL_RD14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RD14"},
- {R_HPPA_ABS_CALL_RD17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RD17"},
- {R_HPPA_ABS_CALL_LR21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_LR21"},
- {R_HPPA_ABS_CALL_RR14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RR14"},
- {R_HPPA_ABS_CALL_RR17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RR17"},
- {R_HPPA_PCREL_CALL_11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_11"},
- {R_HPPA_PCREL_CALL_14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_14"},
- {R_HPPA_PCREL_CALL_17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_17"},
- {R_HPPA_PCREL_CALL_12, 0, 3, 12, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_12"},
- {R_HPPA_PCREL_CALL_L21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_L21"},
- {R_HPPA_PCREL_CALL_R11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_R11"},
- {R_HPPA_PCREL_CALL_R14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_R14"},
- {R_HPPA_PCREL_CALL_R17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_R17"},
- {R_HPPA_PCREL_CALL_LS21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_LS21"},
- {R_HPPA_PCREL_CALL_RS11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RS11"},
- {R_HPPA_PCREL_CALL_RS14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RS14"},
- {R_HPPA_PCREL_CALL_RS17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RS17"},
- {R_HPPA_PCREL_CALL_LD21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_LD21"},
- {R_HPPA_PCREL_CALL_RD11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RD11"},
- {R_HPPA_PCREL_CALL_RD14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RD14"},
- {R_HPPA_PCREL_CALL_RD17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RD17"},
- {R_HPPA_PCREL_CALL_LR21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_LR21"},
- {R_HPPA_PCREL_CALL_RR14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RR14"},
- {R_HPPA_PCREL_CALL_RR17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RR17"},
- {R_HPPA_PLABEL_32, 0, 3, 32, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_32"},
- {R_HPPA_PLABEL_11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_11"},
- {R_HPPA_PLABEL_14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_14"},
- {R_HPPA_PLABEL_L21, 0, 3, 21, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_L21"},
- {R_HPPA_PLABEL_R11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_R11"},
- {R_HPPA_PLABEL_R14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_R14"},
- {R_HPPA_DLT_32, 0, 3, 32, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_32"},
- {R_HPPA_DLT_11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_11"},
- {R_HPPA_DLT_14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_14"},
- {R_HPPA_DLT_L21, 0, 3, 21, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_L21"},
- {R_HPPA_DLT_R11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_R11"},
- {R_HPPA_DLT_R14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_R14"},
- {R_HPPA_UNWIND_ENTRY, 0, 3, 32, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_UNWIND_ENTRY"},
- {R_HPPA_UNWIND_ENTRIES, 0, 3, 32, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_UNWIND_ENTRIES"},
- {R_HPPA_PUSH_CONST, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_CONST"},
- {R_HPPA_PUSH_PC, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_PC"},
- {R_HPPA_PUSH_SYM, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_SYM"},
- {R_HPPA_PUSH_GOTOFF, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_GOTOFF"},
- {R_HPPA_PUSH_ABS_CALL, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_ABS_CALL"},
- {R_HPPA_PUSH_PCREL_CALL, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_PCREL_CALL"},
- {R_HPPA_PUSH_PLABEL, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_PLABEL"},
-{R_HPPA_MAX, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MAX"},
-{R_HPPA_MIN, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MIN"},
-{R_HPPA_ADD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ADD"},
-{R_HPPA_SUB, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_SUB"},
- {R_HPPA_MULT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MULT"},
-{R_HPPA_DIV, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_DIV"},
-{R_HPPA_MOD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MOD"},
-{R_HPPA_AND, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_AND"},
- {R_HPPA_OR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_OR"},
-{R_HPPA_XOR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_XOR"},
-{R_HPPA_NOT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_NOT"},
- {R_HPPA_LSHIFT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LSHIFT"},
- {R_HPPA_ARITH_RSHIFT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ARITH_RSHIFT"},
- {R_HPPA_LOGIC_RSHIFT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LOGIC_RSHIFT"},
-{R_HPPA_EXPR_F, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_L"},
- {R_HPPA_EXPR_L, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_L"},
- {R_HPPA_EXPR_R, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_R"},
- {R_HPPA_EXPR_LS, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_LS"},
- {R_HPPA_EXPR_RS, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_RS"},
- {R_HPPA_EXPR_LD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_LD"},
- {R_HPPA_EXPR_RD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_RD"},
- {R_HPPA_EXPR_LR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_LR"},
- {R_HPPA_EXPR_RR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_RR"},
- {R_HPPA_EXPR_32, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_32"},
- {R_HPPA_EXPR_21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_21"},
- {R_HPPA_EXPR_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_11"},
- {R_HPPA_EXPR_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_14"},
- {R_HPPA_EXPR_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_17"},
- {R_HPPA_EXPR_12, 0, 3, 12, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_12"},
- {R_HPPA_STUB_CALL_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_STUB_CALL_17"},
- {R_HPPA_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_dont, NULL, "R_HPPA_UNIMPLEMENTED"},
-};
+ struct elf32_hppa_stub_hash_entry *ret;
-static symext_chainS *symext_rootP;
-static symext_chainS *symext_lastP;
-static boolean symext_chain_built;
-static long global_value;
-static long GOT_value;
-static asymbol *global_symbol;
-static int global_sym_defined;
-static symext_entryS *symextn_contents;
-static unsigned int symextn_contents_real_size;
-static elf32_hppa_stub_description *elf_hppa_stub_rootP;
-static boolean stubs_finished = false;
-static struct elf32_hppa_symextn_map_struct *elf32_hppa_symextn_map;
-static int elf32_hppa_symextn_map_size;
-
-static char *linker_stubs = NULL;
-static int linker_stubs_size = 0;
-static int linker_stubs_max_size = 0;
-#define STUB_ALLOC_INCR 100
-#define STUB_SYM_BUFFER_INC 5
-
-/* Relocate the given INSN given the various input parameters.
-
- FIXME: endianness and sizeof (long) issues abound here. */
-
-static unsigned long
-hppa_elf_relocate_insn (abfd, input_sect, insn, address, sym_value,
- r_addend, r_format, r_field, pcrel)
- bfd *abfd;
- asection *input_sect;
- unsigned long insn;
- unsigned long address;
- long sym_value;
- long r_addend;
- unsigned long r_format;
- unsigned long r_field;
- unsigned long pcrel;
+ ret = (struct elf32_hppa_stub_hash_entry *) entry;
+
+ /* 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;
+ }
+
+ /* Call the allocation method of the superclass. */
+ ret = ((struct elf32_hppa_stub_hash_entry *)
+ bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
+
+ if (ret)
+ {
+ /* Initialize the local fields. */
+ ret->stub_sec = NULL;
+#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->id_sec = 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;
{
- unsigned char opcode = get_opcode (insn);
- long constant_value;
- unsigned arg_reloc;
-
- switch (opcode)
- {
- case LDO:
- case LDB:
- case LDH:
- case LDW:
- case LDWM:
- case STB:
- case STH:
- case STW:
- case STWM:
- case COMICLR:
- case SUBI:
- case ADDIT:
- case ADDI:
- case LDIL:
- case ADDIL:
- constant_value = HPPA_R_CONSTANT (r_addend);
-
- if (pcrel)
- sym_value -= address;
-
- sym_value = hppa_field_adjust (sym_value, constant_value, r_field);
- return hppa_rebuild_insn (abfd, insn, sym_value, r_format);
-
- case BL:
- case BE:
- case BLE:
- arg_reloc = HPPA_R_ARG_RELOC (r_addend);
-
- /* XXX computing constant_value is not needed??? */
- constant_value = assemble_17 ((insn & 0x001f0000) >> 16,
- (insn & 0x00001ffc) >> 2,
- insn & 1);
-
- constant_value = (constant_value << 15) >> 15;
- if (pcrel)
- {
- sym_value -=
- address + input_sect->output_offset
- + input_sect->output_section->vma;
- sym_value = hppa_field_adjust (sym_value, -8, r_field);
- }
- else
- sym_value = hppa_field_adjust (sym_value, constant_value, r_field);
+ struct elf32_hppa_link_hash_entry *ret;
- return hppa_rebuild_insn (abfd, insn, sym_value >> 2, r_format);
+ ret = (struct elf32_hppa_link_hash_entry *) entry;
- default:
- if (opcode == 0)
- {
- constant_value = HPPA_R_CONSTANT (r_addend);
+ /* 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;
+ }
- if (pcrel)
- sym_value -= address;
+ /* 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));
- return hppa_field_adjust (sym_value, constant_value, r_field);
- }
- else
- abort ();
+ if (ret)
+ {
+ /* Initialize the local fields. */
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ ret->stub_reloc_sec = NULL;
+#endif
+ ret->stub_cache = NULL;
+ ret->reloc_entries = NULL;
+ ret->maybe_pic_call = 0;
+ ret->pic_call = 0;
+ ret->plabel = 0;
+ ret->plt_abs = 0;
}
+
+ return (struct bfd_hash_entry *) ret;
}
-/* Relocate a single unwind entry, or an entire table of them. */
+/* 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). */
-static void
-hppa_elf_relocate_unwind_table (abfd, data, address, sym_value,
- r_addend, r_type, r_field)
+static struct bfd_link_hash_table *
+elf32_hppa_link_hash_table_create (abfd)
bfd *abfd;
- PTR data;
- unsigned long address;
- long sym_value;
- long r_addend;
- unsigned long r_type;
- unsigned long r_field;
{
- bfd_byte *hit_data = address + (bfd_byte *) data;
- long start_offset;
- long end_offset;
- long relocated_value;
- int i;
+ struct elf32_hppa_link_hash_table *ret;
+ bfd_size_type amt = sizeof (*ret);
- switch (r_type)
+ ret = (struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, amt);
+ if (ret == NULL)
+ return NULL;
+
+ if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, hppa_link_hash_newfunc))
{
- case R_HPPA_UNWIND_ENTRY:
- /* Need to relocate the first two 32bit fields in the unwind. They
- correspond to a function's start and end address. */
- start_offset = bfd_get_32 (abfd, hit_data);
- relocated_value = hppa_field_adjust (sym_value, start_offset, r_field);
- bfd_put_32 (abfd, relocated_value, hit_data);
-
- hit_data += sizeof (unsigned long);
- end_offset = bfd_get_32 (abfd, hit_data);
- relocated_value = hppa_field_adjust (sym_value, end_offset, r_field);
- bfd_put_32 (abfd, relocated_value, hit_data);
- break;
+ bfd_release (abfd, ret);
+ return NULL;
+ }
- case R_HPPA_UNWIND_ENTRIES:
- /* Relocate a mass of unwind entires. The count is passed in r_addend
- (who's braindamaged idea was this anyway? */
- for (i = 0; i < r_addend; i++, hit_data += 3 * sizeof (unsigned long))
- {
- unsigned int adjustment;
- /* Adjust the first 32bit field in the unwind entry. It's
- the starting offset of a function. */
- start_offset = bfd_get_32 (abfd, hit_data);
- bfd_put_32 (abfd, sym_value, hit_data);
- adjustment = sym_value - start_offset;
-
- /* Now adjust the second 32bit field, it's the ending offset
- of a function. */
- hit_data += sizeof (unsigned long);
- end_offset = adjustment + bfd_get_32 (abfd, hit_data);
- bfd_put_32 (abfd, end_offset, hit_data);
-
- /* Prepare for the next iteration. */
- start_offset = bfd_get_32 (abfd,
- hit_data + 3 * sizeof (unsigned long));
- sym_value = start_offset + adjustment;
- }
- break;
+ /* Init the stub hash table too. */
+ if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc))
+ return NULL;
+
+ ret->stub_bfd = NULL;
+ ret->add_stub_section = NULL;
+ ret->layout_sections_again = NULL;
+ ret->stub_group = NULL;
+ ret->sgot = NULL;
+ ret->srelgot = NULL;
+ ret->splt = NULL;
+ ret->srelplt = NULL;
+ ret->sdynbss = NULL;
+ ret->srelbss = NULL;
+ ret->text_segment_base = (bfd_vma) -1;
+ ret->data_segment_base = (bfd_vma) -1;
+ ret->multi_subspace = 0;
+ ret->has_12bit_branch = 0;
+ ret->has_17bit_branch = 0;
+ ret->need_plt_stub = 0;
+
+ return &ret->root.root;
+}
- default:
- abort ();
+/* Build a name for an entry in the stub hash table. */
+
+static char *
+hppa_stub_name (input_section, sym_sec, hash, rel)
+ const asection *input_section;
+ const asection *sym_sec;
+ const struct elf32_hppa_link_hash_entry *hash;
+ const Elf_Internal_Rela *rel;
+{
+ char *stub_name;
+ bfd_size_type len;
+
+ 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
+ {
+ 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;
}
-/* Return the relocated value of the given symbol. */
+/* Look up an entry in the stub hash. Stub entries are cached because
+ creating the stub name takes a bit of time. */
-static long
-get_symbol_value (symbol)
- asymbol *symbol;
+static struct elf32_hppa_stub_hash_entry *
+hppa_get_stub_entry (input_section, sym_sec, hash, rel, hplink)
+ const asection *input_section;
+ const asection *sym_sec;
+ struct elf32_hppa_link_hash_entry *hash;
+ const Elf_Internal_Rela *rel;
+ struct elf32_hppa_link_hash_table *hplink;
{
- if (symbol == NULL
- || symbol->section == &bfd_com_section)
- return 0;
+ struct elf32_hppa_stub_hash_entry *stub_entry;
+ const asection *id_sec;
+
+ /* If this input section is part of a group of sections sharing one
+ stub section, then use the id of the first section in the group.
+ Stub names need to include a section id, as there may well be
+ more than one stub used to reach say, printf, and we need to
+ distinguish between them. */
+ id_sec = hplink->stub_group[input_section->id].link_sec;
+
+ if (hash != NULL && hash->stub_cache != NULL
+ && hash->stub_cache->h == hash
+ && hash->stub_cache->id_sec == id_sec)
+ {
+ stub_entry = hash->stub_cache;
+ }
else
- return symbol->value + symbol->section->output_section->vma
- + symbol->section->output_offset;
+ {
+ char *stub_name;
+
+ stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel);
+ if (stub_name == NULL)
+ return NULL;
+
+ stub_entry = hppa_stub_hash_lookup (&hplink->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;
}
-/* Return one (or more) BFD relocations which implement the base
- relocation with modifications based on format and field. */
+/* Add a new stub entry to the stub hash. Not all fields of the new
+ stub entry are initialised. */
-elf32_hppa_reloc_type **
-hppa_elf_gen_reloc_type (abfd, base_type, format, field)
- bfd *abfd;
- elf32_hppa_reloc_type base_type;
- int format;
- int field;
+static struct elf32_hppa_stub_hash_entry *
+hppa_add_stub (stub_name, section, hplink)
+ const char *stub_name;
+ asection *section;
+ struct elf32_hppa_link_hash_table *hplink;
{
- elf32_hppa_reloc_type *finaltype;
- elf32_hppa_reloc_type **final_types;
+ asection *link_sec;
+ asection *stub_sec;
+ struct elf32_hppa_stub_hash_entry *stub_entry;
+
+ link_sec = hplink->stub_group[section->id].link_sec;
+ stub_sec = hplink->stub_group[section->id].stub_sec;
+ if (stub_sec == NULL)
+ {
+ stub_sec = hplink->stub_group[link_sec->id].stub_sec;
+ if (stub_sec == NULL)
+ {
+ bfd_size_type len;
+ char *s_name;
+
+ len = strlen (link_sec->name) + sizeof (STUB_SUFFIX);
+ s_name = bfd_alloc (hplink->stub_bfd, len);
+ if (s_name == NULL)
+ return NULL;
+
+ strcpy (s_name, link_sec->name);
+ strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX);
+ stub_sec = (*hplink->add_stub_section) (s_name, link_sec);
+ if (stub_sec == NULL)
+ return NULL;
+ hplink->stub_group[link_sec->id].stub_sec = stub_sec;
+ }
+ hplink->stub_group[section->id].stub_sec = stub_sec;
+ }
+
+ /* 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;
+ }
+
+ stub_entry->stub_sec = stub_sec;
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ stub_entry->reloc_sec = hplink->stub_group[section->id].reloc_sec;
+#endif
+ stub_entry->stub_offset = 0;
+ stub_entry->id_sec = link_sec;
+ return stub_entry;
+}
- /* Allocate slots for the BFD relocation. */
- final_types = (elf32_hppa_reloc_type **)
- bfd_alloc_by_size_t (abfd, sizeof (elf32_hppa_reloc_type *) * 2);
- BFD_ASSERT (final_types != 0); /* FIXME */
+/* Determine the type of stub needed, if any, for a call. */
- /* Allocate space for the relocation itself. */
- finaltype = (elf32_hppa_reloc_type *)
- bfd_alloc_by_size_t (abfd, sizeof (elf32_hppa_reloc_type));
- BFD_ASSERT (finaltype != 0); /* FIXME */
+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;
+{
+ 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_defweak
+ && hash->elf.dynindx != -1
+ && hash->elf.plt.offset != (bfd_vma) -1)
+ || hash->elf.root.type == bfd_link_hash_undefweak
+ || hash->elf.root.type == bfd_link_hash_undefined
+ || (hash->maybe_pic_call && !(input_sec->flags & SEC_HAS_GOT_REF))))
+ {
+ /* 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 or weak syms too;
+ They will presumably be resolved by the dynamic linker. */
+ return hppa_stub_import;
+ }
- /* Some reasonable defaults. */
- final_types[0] = finaltype;
- final_types[1] = NULL;
+ /* Determine where the call point is. */
+ location = (input_sec->output_offset
+ + input_sec->output_section->vma
+ + rel->r_offset);
-#define final_type finaltype[0]
+ branch_offset = destination - location - 8;
+ r_type = ELF32_R_TYPE (rel->r_info);
- final_type = base_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)
+ {
+ 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;
+ }
- /* Just a tangle of nested switch statements to deal with the braindamage
- that a different field selector means a completely different relocation
- for PA ELF. */
- switch (base_type)
+ if (branch_offset + max_branch_offset >= 2*max_branch_offset)
{
- case R_HPPA:
- switch (format)
+#if LONG_BRANCH_VIA_PLT
+ if (hash != NULL
+ && hash->elf.dynindx != -1
+ && hash->elf.plt.offset != (bfd_vma) -1
+ && hash->elf.type != STT_PARISC_MILLI)
{
- case 11:
- switch (field)
- {
- case e_fsel:
- final_type = R_HPPA_11;
- break;
- case e_rsel:
- final_type = R_HPPA_R11;
- break;
- case e_rssel:
- final_type = R_HPPA_RS11;
- break;
- case e_rdsel:
- final_type = R_HPPA_RD11;
- break;
- case e_psel:
- final_type = R_HPPA_PLABEL_11;
- break;
- case e_rpsel:
- final_type = R_HPPA_PLABEL_R11;
- break;
- case e_tsel:
- final_type = R_HPPA_DLT_11;
- break;
- case e_rtsel:
- final_type = R_HPPA_DLT_R11;
- break;
- default:
- abort ();
- break;
- }
- break;
+ /* 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 14:
- switch (field)
- {
- case e_rsel:
- final_type = R_HPPA_R14;
- break;
- case e_rssel:
- final_type = R_HPPA_RS14;
- break;
- case e_rdsel:
- final_type = R_HPPA_RD14;
- break;
- case e_rrsel:
- final_type = R_HPPA_RR14;
- break;
- case e_psel:
- final_type = R_HPPA_PLABEL_14;
- break;
- case e_rpsel:
- final_type = R_HPPA_PLABEL_R14;
- break;
- case e_tsel:
- final_type = R_HPPA_DLT_14;
- break;
- case e_rtsel:
- final_type = R_HPPA_DLT_R14;
- break;
- default:
- abort ();
- break;
- }
- break;
+/* Build one linker stub as defined by the stub hash table entry GEN_ENTRY.
+ IN_ARG contains the link info pointer. */
- case 17:
- switch (field)
- {
- case e_fsel:
- final_type = R_HPPA_17;
- break;
- case e_rsel:
- final_type = R_HPPA_R17;
- break;
- case e_rssel:
- final_type = R_HPPA_RS17;
- break;
- case e_rdsel:
- final_type = R_HPPA_RD17;
- break;
- case e_rrsel:
- final_type = R_HPPA_RR17;
- break;
- default:
- abort ();
- break;
- }
- break;
+#define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */
+#define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */
+
+#define BL_R1 0xe8200000 /* b,l .+8,%r1 */
+#define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */
+#define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */
+
+#define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */
+#define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */
+#define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */
+#define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */
+
+#define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */
+#define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */
+
+#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) */
+
+#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) */
+
+#ifndef R19_STUBS
+#define R19_STUBS 1
+#endif
+
+#if R19_STUBS
+#define LDW_R1_DLT LDW_R1_R19
+#else
+#define LDW_R1_DLT LDW_R1_DP
+#endif
+
+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;
+ bfd_vma insn;
+ bfd_vma off;
+ int val;
+ int size;
+
+ /* 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;
- case 21:
- switch (field)
+ /* Make a note of the offset within the stubs for this entry. */
+ stub_entry->stub_offset = stub_sec->_raw_size;
+ loc = stub_sec->contents + stub_entry->stub_offset;
+
+ 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);
+
+ val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel);
+ insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21);
+ bfd_put_32 (stub_bfd, insn, loc);
+
+ val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2;
+ insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 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)
{
- case e_lsel:
- final_type = R_HPPA_L21;
- break;
- case e_lssel:
- final_type = R_HPPA_LS21;
- break;
- case e_ldsel:
- final_type = R_HPPA_LD21;
- break;
- case e_lrsel:
- final_type = R_HPPA_LR21;
- break;
- case e_lpsel:
- final_type = R_HPPA_PLABEL_L21;
- break;
- case e_ltsel:
- final_type = R_HPPA_PLABEL_L21;
- break;
- default:
- abort ();
- break;
+ (*_bfd_error_handler)
+ (_("%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;
}
- break;
- case 32:
- switch (field)
+ srel = stub_entry->reloc_sec;
+ if (srel == NULL)
{
- case e_fsel:
- final_type = R_HPPA_32;
- break;
- case e_psel:
- final_type = R_HPPA_PLABEL_32;
- break;
- case e_tsel:
- final_type = R_HPPA_DLT_32;
- break;
- default:
- abort ();
- break;
+ (*_bfd_error_handler)
+ (_("Could not find relocation section for %s"),
+ stub_sec->name);
+ bfd_set_error (bfd_error_bad_value);
+ return false;
}
- break;
- default:
- abort ();
- break;
+ 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;
+ 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, (bfd_vma) BL_R1, loc);
+ val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel);
+ insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21);
+ bfd_put_32 (stub_bfd, insn, loc + 4);
+
+ val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2;
+ insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17);
+ bfd_put_32 (stub_bfd, insn, loc + 8);
+ size = 12;
+ break;
- case R_HPPA_GOTOFF:
- switch (format)
- {
- case 11:
- switch (field)
- {
- case e_rsel:
- final_type = R_HPPA_GOTOFF_R11;
- break;
- case e_rssel:
- final_type = R_HPPA_GOTOFF_RS11;
- break;
- case e_rdsel:
- final_type = R_HPPA_GOTOFF_RD11;
- break;
- case e_fsel:
- final_type = R_HPPA_GOTOFF_11;
- break;
- default:
- abort ();
- break;
- }
- break;
+ case hppa_stub_import:
+ case hppa_stub_import_shared:
+ off = stub_entry->h->elf.plt.offset;
+ if (off >= (bfd_vma) -2)
+ abort ();
- case 14:
- switch (field)
- {
- case e_rsel:
- final_type = R_HPPA_GOTOFF_R14;
- break;
- case e_rssel:
- final_type = R_HPPA_GOTOFF_RS14;
- break;
- case e_rdsel:
- final_type = R_HPPA_GOTOFF_RD14;
- break;
- case e_rrsel:
- final_type = R_HPPA_GOTOFF_RR14;
- break;
- case e_fsel:
- final_type = R_HPPA_GOTOFF_14;
- break;
- default:
- abort ();
- break;
- }
- break;
+ off &= ~ (bfd_vma) 1;
+ sym_value = (off
+ + 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
+ val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel),
+ insn = hppa_rebuild_insn ((int) insn, val, 21);
+ bfd_put_32 (stub_bfd, insn, loc);
+
+ /* It is critical to use lrsel/rrsel here because we are using
+ two different offsets (+0 and +4) from sym_value. If we use
+ lsel/rsel then with unfortunate sym_values we will round
+ sym_value+4 up to the next 2k block leading to a mis-match
+ between the lsel and rsel value. */
+ val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel);
+ insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14);
+ bfd_put_32 (stub_bfd, insn, loc + 4);
+
+ if (hplink->multi_subspace)
+ {
+ val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
+ insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
+ bfd_put_32 (stub_bfd, insn, loc + 8);
- case 21:
- switch (field)
- {
- case e_lsel:
- final_type = R_HPPA_GOTOFF_L21;
- break;
- case e_lssel:
- final_type = R_HPPA_GOTOFF_LS21;
- break;
- case e_ldsel:
- final_type = R_HPPA_GOTOFF_LD21;
- break;
- case e_lrsel:
- final_type = R_HPPA_GOTOFF_LR21;
- break;
- default:
- abort ();
- break;
- }
- break;
+ bfd_put_32 (stub_bfd, (bfd_vma) LDSID_R21_R1, loc + 12);
+ bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
+ bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_R21, loc + 20);
+ bfd_put_32 (stub_bfd, (bfd_vma) STW_RP, loc + 24);
- default:
- abort ();
- break;
+ size = 28;
}
- break;
+ else
+ {
+ bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8);
+ val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel);
+ insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14);
+ bfd_put_32 (stub_bfd, insn, loc + 12);
+ size = 16;
+ }
- case R_HPPA_PCREL_CALL:
- switch (format)
+ if (!info->shared
+ && stub_entry->h != NULL
+ && stub_entry->h->pic_call)
{
- case 11:
- switch (field)
- {
- case e_rsel:
- final_type = R_HPPA_PCREL_CALL_R11;
- break;
- case e_rssel:
- final_type = R_HPPA_PCREL_CALL_RS11;
- break;
- case e_rdsel:
- final_type = R_HPPA_PCREL_CALL_RD11;
- break;
- case e_fsel:
- final_type = R_HPPA_PCREL_CALL_11;
- break;
- default:
- abort ();
- break;
- }
- break;
+ /* 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;
- case 14:
- switch (field)
- {
- case e_rsel:
- final_type = R_HPPA_PCREL_CALL_R14;
- break;
- case e_rssel:
- final_type = R_HPPA_PCREL_CALL_RS14;
- break;
- case e_rdsel:
- final_type = R_HPPA_PCREL_CALL_RD14;
- break;
- case e_rrsel:
- final_type = R_HPPA_PCREL_CALL_RR14;
- break;
- case e_fsel:
- final_type = R_HPPA_PCREL_CALL_14;
- break;
- default:
- abort ();
- break;
- }
- break;
+ dynobj = hplink->root.dynobj;
+ eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h;
- case 17:
- switch (field)
- {
- case e_rsel:
- final_type = R_HPPA_PCREL_CALL_R17;
- break;
- case e_rssel:
- final_type = R_HPPA_PCREL_CALL_RS17;
- break;
- case e_rdsel:
- final_type = R_HPPA_PCREL_CALL_RD17;
- break;
- case e_rrsel:
- final_type = R_HPPA_PCREL_CALL_RR17;
- break;
- case e_fsel:
- final_type = R_HPPA_PCREL_CALL_17;
- break;
- default:
- abort ();
- break;
- }
- break;
+ if (eh->elf.root.type != bfd_link_hash_defined
+ && eh->elf.root.type != bfd_link_hash_defweak)
+ abort ();
- case 21:
- switch (field)
- {
- case e_lsel:
- final_type = R_HPPA_PCREL_CALL_L21;
- break;
- case e_lssel:
- final_type = R_HPPA_PCREL_CALL_LS21;
- break;
- case e_ldsel:
- final_type = R_HPPA_PCREL_CALL_LD21;
- break;
- case e_lrsel:
- final_type = R_HPPA_PCREL_CALL_LR21;
- break;
- default:
- abort ();
- break;
- }
- break;
+ value = (eh->elf.root.u.def.value
+ + eh->elf.root.u.def.section->output_offset
+ + eh->elf.root.u.def.section->output_section->vma);
- default:
- abort ();
- break;
+ /* Fill in the entry in the procedure linkage table.
+
+ The format of a plt entry is
+ <funcaddr>
+ <__gp>. */
+
+ bfd_put_32 (hplink->splt->owner, value,
+ hplink->splt->contents + off);
+ value = elf_gp (hplink->splt->output_section->owner);
+ bfd_put_32 (hplink->splt->owner, value,
+ hplink->splt->contents + off + 4);
}
break;
+ 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);
- case R_HPPA_PLABEL:
- switch (format)
+ /* And this is where we are coming from. */
+ sym_value -= (stub_entry->stub_offset
+ + stub_sec->output_offset
+ + stub_sec->output_section->vma);
+
+ if (sym_value - 8 + 0x40000 >= 0x80000)
{
- case 11:
- switch (field)
- {
- case e_fsel:
- final_type = R_HPPA_PLABEL_11;
- break;
- case e_rsel:
- final_type = R_HPPA_PLABEL_R11;
- break;
- default:
- abort ();
- break;
- }
+ (*_bfd_error_handler)
+ (_("%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;
+ }
+
+ val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2;
+ insn = hppa_rebuild_insn ((int) BL_RP, val, 17);
+ bfd_put_32 (stub_bfd, insn, loc);
+
+ bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4);
+ bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8);
+ bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12);
+ bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16);
+ bfd_put_32 (stub_bfd, (bfd_vma) 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 = stub_sec->_raw_size;
+
+ size = 24;
+ break;
+
+ default:
+ BFD_FAIL ();
+ return false;
+ }
+
+ stub_sec->_raw_size += size;
+ return true;
+}
+
+#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
+
+/* 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;
+{
+ 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)
+ {
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ if (stub_entry->reloc_sec != NULL)
+ stub_entry->reloc_sec->_raw_size += sizeof (Elf32_External_Rela);
+#endif
+ 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. */
+ {
+ if (hplink->multi_subspace)
+ size = 28;
+ else
+ size = 16;
+ }
+
+ stub_entry->stub_sec->_raw_size += size;
+ return true;
+}
+
+/* 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;
+{
+ Elf_Internal_Ehdr * i_ehdrp;
+ unsigned int flags;
+
+ i_ehdrp = elf_elfheader (abfd);
+ if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
+ {
+ if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX)
+ return false;
+ }
+ else
+ {
+ if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX)
+ return false;
+ }
+
+ flags = i_ehdrp->e_flags;
+ 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. */
+
+static boolean
+elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+ const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED;
+ const char **namep ATTRIBUTE_UNUSED;
+ flagword *flagsp ATTRIBUTE_UNUSED;
+ asection **secp;
+ bfd_vma *valp;
+{
+ *valp += (*secp)->vma;
+ return true;
+}
+
+/* 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;
+{
+ struct elf32_hppa_link_hash_table *hplink;
+
+ /* Don't try to create the .plt and .got twice. */
+ hplink = hppa_link_hash_table (info);
+ if (hplink->splt != NULL)
+ return true;
+
+ /* Call the generic code to do most of the work. */
+ if (! _bfd_elf_create_dynamic_sections (abfd, info))
+ return false;
+
+ hplink->splt = bfd_get_section_by_name (abfd, ".plt");
+ 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;
+
+ 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_check_relocs (abfd, info, sec, relocs)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec;
+ const Elf_Internal_Rela *relocs;
+{
+ 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 = hplink->root.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
+ PLT_PLABEL = 16
+ };
+
+ unsigned int r_symndx, r_type;
+ struct elf32_hppa_link_hash_entry *h;
+ int need_entry;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ 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]);
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+
+ 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 14:
- switch (field)
- {
- case e_fsel:
- final_type = R_HPPA_PLABEL_14;
- break;
- case e_rsel:
- final_type = R_HPPA_PLABEL_R14;
- break;
- default:
- abort ();
- break;
- }
+ case R_PARISC_PLABEL14R: /* "Official" procedure labels. */
+ case R_PARISC_PLABEL21L:
+ case R_PARISC_PLABEL32:
+ /* If the addend is non-zero, we break badly. */
+ if (rel->r_addend != 0)
+ abort ();
+
+ /* If we are creating a shared library, then we need to
+ create a PLT entry for all PLABELs, because PLABELs with
+ local symbols may be passed via a pointer to another
+ object. Additionally, output a dynamic relocation
+ pointing to the PLT entry.
+ For executables, the original 32-bit ABI allowed two
+ different styles of PLABELs (function pointers): For
+ global functions, the PLABEL word points into the .plt
+ two bytes past a (function address, gp) pair, and for
+ local functions the PLABEL points directly at the
+ function. The magic +2 for the first type allows us to
+ differentiate between the two. As you can imagine, this
+ is a real pain when it comes to generating code to call
+ functions indirectly or to compare function pointers.
+ We avoid the mess by always pointing a PLABEL into the
+ .plt, even for local functions. */
+ need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL;
break;
- case 21:
- switch (field)
+ case R_PARISC_PCREL12F:
+ hplink->has_12bit_branch = 1;
+ /* Fall thru. */
+ case R_PARISC_PCREL17C:
+ case R_PARISC_PCREL17F:
+ hplink->has_17bit_branch = 1;
+ /* Fall thru. */
+ case R_PARISC_PCREL22F:
+ /* Function calls might need to go through the .plt, and
+ might require long branch stubs. */
+ if (h == NULL)
{
- case e_lsel:
- final_type = R_HPPA_PLABEL_L21;
- break;
- default:
- abort ();
- break;
+ /* 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;
+ if (h->elf.type == STT_PARISC_MILLI)
+ need_entry = NEED_STUBREL;
}
break;
- case 32:
- switch (field)
+ case R_PARISC_SEGBASE: /* Used to set segment base. */
+ case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */
+ 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)
{
- case e_fsel:
- final_type = R_HPPA_PLABEL_32;
- break;
- default:
- abort ();
- break;
+ (*_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_DIR14F: /* Used for load/store from absolute locn. */
+ case R_PARISC_DIR14R:
+ 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 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_addend))
+ return false;
+ continue;
+
default:
- abort ();
- break;
+ continue;
}
-
- case R_HPPA_ABS_CALL:
- switch (format)
+ /* Now carry out our orders. */
+ if (need_entry & NEED_GOT)
{
- case 11:
- switch (field)
+ /* Allocate space for a GOT entry, as well as a dynamic
+ relocation for this entry. */
+ if (dynobj == NULL)
+ hplink->root.dynobj = dynobj = abfd;
+
+ if (hplink->sgot == NULL)
{
- case e_rsel:
- final_type = R_HPPA_ABS_CALL_R11;
- break;
- case e_rssel:
- final_type = R_HPPA_ABS_CALL_RS11;
- break;
- case e_rdsel:
- final_type = R_HPPA_ABS_CALL_RD11;
- break;
- case e_fsel:
- final_type = R_HPPA_ABS_CALL_11;
- break;
- default:
- abort ();
- break;
+ if (! elf32_hppa_create_dynamic_sections (dynobj, info))
+ return false;
}
- break;
- case 14:
- switch (field)
+ if (h != NULL)
{
- case e_rsel:
- final_type = R_HPPA_ABS_CALL_R14;
- break;
- case e_rssel:
- final_type = R_HPPA_ABS_CALL_RS14;
- break;
- case e_rdsel:
- final_type = R_HPPA_ABS_CALL_RD14;
- break;
- case e_rrsel:
- final_type = R_HPPA_ABS_CALL_RR14;
- break;
- case e_fsel:
- final_type = R_HPPA_ABS_CALL_14;
- break;
- default:
- abort ();
- break;
+ if (h->elf.got.refcount == -1)
+ h->elf.got.refcount = 1;
+ else
+ h->elf.got.refcount += 1;
}
- break;
+ else
+ {
+ /* This is a global offset table entry for a local symbol. */
+ if (local_got_refcounts == NULL)
+ {
+ bfd_size_type size;
+
+ /* Allocate space for local got offsets and local
+ plt offsets. Done this way to save polluting
+ elf_obj_tdata with another target specific
+ pointer. */
+ size = symtab_hdr->sh_info;
+ size *= 2 * 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_t) size);
+ }
+ if (local_got_refcounts[r_symndx] == -1)
+ local_got_refcounts[r_symndx] = 1;
+ else
+ local_got_refcounts[r_symndx] += 1;
+ }
+ }
- case 17:
- switch (field)
+ 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)
{
- case e_rsel:
- final_type = R_HPPA_ABS_CALL_R17;
- break;
- case e_rssel:
- final_type = R_HPPA_ABS_CALL_RS17;
- break;
- case e_rdsel:
- final_type = R_HPPA_ABS_CALL_RD17;
- break;
- case e_rrsel:
- final_type = R_HPPA_ABS_CALL_RR17;
- break;
- case e_fsel:
- final_type = R_HPPA_ABS_CALL_17;
- break;
- default:
- abort ();
- break;
+ if (h != NULL)
+ {
+ 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 this .plt entry is for a plabel, mark it so
+ that adjust_dynamic_symbol will keep the entry
+ even if it appears to be local. */
+ if (need_entry & PLT_PLABEL)
+ h->plabel = 1;
+ }
+ else if (need_entry & PLT_PLABEL)
+ {
+ bfd_signed_vma *local_plt_refcounts;
+
+ if (local_got_refcounts == NULL)
+ {
+ bfd_size_type size;
+
+ /* Allocate space for local got offsets and local
+ plt offsets. */
+ size = symtab_hdr->sh_info;
+ size *= 2 * 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_t) size);
+ }
+ local_plt_refcounts = (local_got_refcounts
+ + symtab_hdr->sh_info);
+ if (local_plt_refcounts[r_symndx] == -1)
+ local_plt_refcounts[r_symndx] = 1;
+ else
+ local_plt_refcounts[r_symndx] += 1;
+ }
}
- break;
+ }
- case 21:
- switch (field)
+ 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 (need_entry == NEED_DYNREL
+ && h != NULL
+ && !info->shared
+ && (sec->flags & SEC_READONLY) != 0)
+ 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 on the other hand, we are creating an executable, we
+ may need to keep relocations for symbols satisfied by a
+ dynamic library if we manage to avoid copy relocs for the
+ symbol. */
+ if ((info->shared
+ && (sec->flags & SEC_ALLOC) != 0
+ && (IS_ABSOLUTE_RELOC (r_type)
+ || (h != NULL
+ && (!info->symbolic
+ || h->elf.root.type == bfd_link_hash_defweak
+ || (h->elf.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))))
+ || (!info->shared
+ && (sec->flags & SEC_ALLOC) != 0
+ && h != NULL
+ && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
+ && (h->elf.root.type == bfd_link_hash_defweak
+ || (h->elf.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0)))
{
- case e_lsel:
- final_type = R_HPPA_ABS_CALL_L21;
- break;
- case e_lssel:
- final_type = R_HPPA_ABS_CALL_LS21;
- break;
- case e_ldsel:
- final_type = R_HPPA_ABS_CALL_LD21;
- break;
- case e_lrsel:
- final_type = R_HPPA_ABS_CALL_LR21;
- break;
- default:
- abort ();
- break;
+ 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)
+ hplink->root.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))
+ {
+ bfd_size_type 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);
+
+ /* Keep track of relocations we have entered for
+ this global symbol, so that we can discard them
+ later if necessary. */
+ if (!info->shared
+ || (h != NULL
+ && (! IS_ABSOLUTE_RELOC (rtype)
+ || (need_entry & NEED_STUBREL))))
+ {
+ struct elf32_hppa_dyn_reloc_entry *p;
+
+ for (p = h->reloc_entries; p != NULL; p = p->next)
+ if (p->section == srel)
+ break;
+
+ if (p == NULL)
+ {
+ p = ((struct elf32_hppa_dyn_reloc_entry *)
+ bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
+ if (p == NULL)
+ return false;
+ p->next = h->reloc_entries;
+ h->reloc_entries = p;
+ p->section = srel;
+ p->count = 0;
+ }
+
+ /* 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 to discard unneeded relocs. */
+ if (! (need_entry & NEED_STUBREL))
+ ++p->count;
+ }
+ }
}
+ }
+ }
+
+ return true;
+}
+
+/* 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:
- abort ();
- break;
+ 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;
+ }
}
- 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;
+}
- case R_HPPA_UNWIND:
- final_type = R_HPPA_UNWIND_ENTRY;
- break;
+/* Update the got and plt entry reference counts for the section being
+ removed. */
+static boolean
+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;
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ bfd_signed_vma *local_got_refcounts;
+ bfd_signed_vma *local_plt_refcounts;
+ const Elf_Internal_Rela *rel, *relend;
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h;
+ struct elf32_hppa_link_hash_table *hplink;
+ bfd *dynobj;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
+ local_plt_refcounts = local_got_refcounts;
+ if (local_plt_refcounts != NULL)
+ local_plt_refcounts += symtab_hdr->sh_info;
+ hplink = hppa_link_hash_table (info);
+ dynobj = hplink->root.dynobj;
+ if (dynobj == NULL)
+ return true;
+
+ 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;
+ }
+ else if (local_got_refcounts != NULL)
+ {
+ if (local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx] -= 1;
+ }
+ break;
+
+ 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;
- case R_HPPA_COMPLEX:
- case R_HPPA_COMPLEX_PCREL_CALL:
- case R_HPPA_COMPLEX_ABS_CALL:
- /* The code originally here was horribly broken, and apparently
- never used. Zap it. When we need complex relocations rewrite
- it correctly! */
- abort ();
- break;
-
- default:
- final_type = base_type;
- break;
- }
+ case R_PARISC_PLABEL14R:
+ case R_PARISC_PLABEL21L:
+ case R_PARISC_PLABEL32:
+ 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;
+ }
+ else if (local_plt_refcounts != NULL)
+ {
+ if (local_plt_refcounts[r_symndx] > 0)
+ local_plt_refcounts[r_symndx] -= 1;
+ }
+ break;
- return final_types;
+ default:
+ break;
+ }
+
+ return true;
}
-#undef final_type
+/* Our own version of hide_symbol, so that we can keep plt entries for
+ plabels. */
+static void
+elf32_hppa_hide_symbol (info, h)
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+ struct elf_link_hash_entry *h;
+{
+ if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)
+ h->dynindx = -1;
+ if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel)
+ {
+ h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ h->plt.offset = (bfd_vma) -1;
+ }
+}
-/* Actually perform a relocation. */
+/* This is the condition under which elf32_hppa_finish_dynamic_symbol
+ will be called from elflink.h. If elflink.h doesn't call our
+ finish_dynamic_symbol routine, we'll need to do something about
+ initializing any .plt and .got entries in elf32_hppa_relocate_section. */
+#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
+ ((DYN) \
+ && ((INFO)->shared \
+ || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
+ && ((H)->dynindx != -1 \
+ || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
+
+/* 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. */
-static bfd_reloc_status_type
-hppa_elf_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd,
- error_message)
- bfd *abfd;
- arelent *reloc_entry;
- asymbol *symbol_in;
- PTR data;
- asection *input_section;
- bfd *output_bfd;
- char **error_message;
+static boolean
+elf32_hppa_adjust_dynamic_symbol (info, h)
+ struct bfd_link_info *info;
+ struct elf_link_hash_entry *h;
{
- unsigned long insn;
- long sym_value = 0;
- unsigned long addr = reloc_entry->address;
- bfd_byte *hit_data = addr + (bfd_byte *) data;
- unsigned long r_type = reloc_entry->howto->type;
- unsigned long r_field = e_fsel;
- boolean r_pcrel = reloc_entry->howto->pc_relative;
- unsigned r_format = reloc_entry->howto->bitsize;
- long r_addend = reloc_entry->addend;
+ bfd *dynobj;
+ struct elf32_hppa_link_hash_table *hplink;
+ asection *s;
+
+ hplink = hppa_link_hash_table (info);
+ dynobj = hplink->root.dynobj;
+
+ /* 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 (!info->shared
+ && h->plt.refcount > 0
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
+ && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)
+ {
+ ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1;
+ }
+
+ if (h->plt.refcount <= 0
+ || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
+ && h->root.type != bfd_link_hash_defweak
+ && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel
+ && (!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, nor is the symbol
+ used by a plabel relocation. 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 (((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call)
+ ((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;
+ }
- /* If only performing a partial link, get out early. */
- if (output_bfd)
+ /* 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)
{
- reloc_entry->address += input_section->output_offset;
- return bfd_reloc_ok;
+ if (h->weakdef->root.type != bfd_link_hash_defined
+ && h->weakdef->root.type != bfd_link_hash_defweak)
+ abort ();
+ h->root.u.def.section = h->weakdef->root.u.def.section;
+ h->root.u.def.value = h->weakdef->root.u.def.value;
+ return true;
}
- /* If performing final link and the symbol we're relocating against
- is undefined, then return an error. */
- if (symbol_in && symbol_in->section == &bfd_und_section)
- return bfd_reloc_undefined;
+ /* 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;
- /* Get the final relocated value. */
- sym_value = get_symbol_value (symbol_in);
+ srel = hplink->srelbss;
+ srel->_raw_size += sizeof (Elf32_External_Rela);
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY;
+ }
- /* Compute the value of $global$.
- FIXME: None of this should be necessary. $global$ is just a
- marker and shouldn't really figure into these computations.
+ {
+ /* 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;
+
+ /* Increment the section size to make room for the symbol. */
+ s->_raw_size += h->size;
+
+ return true;
+}
- Once that's fixed we'll need to teach this backend to change
- DP-relative relocations involving symbols in the text section
- to be simple absolute relocations. */
- if (!global_sym_defined)
+/* 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. */
+
+static boolean
+hppa_handle_PIC_calls (h, inf)
+ struct elf_link_hash_entry *h;
+ PTR inf ATTRIBUTE_UNUSED;
+{
+ 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))
{
- if (global_symbol)
+ h->plt.offset = (bfd_vma) -1;
+ h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ return true;
+ }
+
+ h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1;
+ ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1;
+
+ return true;
+}
+
+/* Allocate space in .plt, .got and associated reloc sections for
+ global syms. */
+
+static boolean
+allocate_plt_and_got_and_discard_relocs (h, inf)
+ struct elf_link_hash_entry *h;
+ PTR inf;
+{
+ struct bfd_link_info *info;
+ struct elf32_hppa_link_hash_table *hplink;
+ asection *s;
+ struct elf32_hppa_link_hash_entry *eh;
+
+ if (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ return true;
+
+ info = (struct bfd_link_info *) inf;
+ hplink = hppa_link_hash_table (info);
+ if ((hplink->root.dynamic_sections_created
+ && h->plt.refcount > 0)
+ || ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
+ {
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
+ && h->type != STT_PARISC_MILLI
+ && !((struct elf32_hppa_link_hash_entry *) h)->pic_call)
{
- global_value = (global_symbol->value
- + global_symbol->section->output_section->vma
- + global_symbol->section->output_offset);
- GOT_value = global_value;
- global_sym_defined++;
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+ }
+
+ /* Make an entry in the .plt section. */
+ s = hplink->splt;
+ h->plt.offset = s->_raw_size;
+ if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE
+ && ((struct elf32_hppa_link_hash_entry *) h)->plabel
+ && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0)
+ {
+ /* Add some extra space for the dynamic linker to use. */
+ s->_raw_size += PLABEL_PLT_ENTRY_SIZE;
+ }
+ else
+ s->_raw_size += PLT_ENTRY_SIZE;
+
+ if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call
+ && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h))
+ {
+ /* We also need to make an entry in the .rela.plt section. */
+ hplink->srelplt->_raw_size += sizeof (Elf32_External_Rela);
+ hplink->need_plt_stub = 1;
}
}
+ else
+ {
+ h->plt.offset = (bfd_vma) -1;
+ h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ }
- /* Get the instruction word. */
- insn = bfd_get_32 (abfd, hit_data);
+ if (h->got.refcount > 0)
+ {
+ boolean dyn;
- /* Relocate the value based on one of the basic relocation types
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
+ && h->type != STT_PARISC_MILLI)
+ {
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+ }
- basic_type_1: relocation is relative to $global$
- basic_type_2: relocation is relative to the current GOT
- basic_type_3: relocation is an absolute call
- basic_type_4: relocation is an PC-relative call
- basic_type_5: relocation is plabel reference
- basic_type_6: relocation is an unwind table relocation
- extended_type: unimplemented */
+ s = hplink->sgot;
+ h->got.offset = s->_raw_size;
+ s->_raw_size += GOT_ENTRY_SIZE;
+ dyn = hplink->root.dynamic_sections_created;
+ if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h))
+ hplink->srelgot->_raw_size += sizeof (Elf32_External_Rela);
+ }
+ else
+ h->got.offset = (bfd_vma) -1;
+
+ /* If this is a -Bsymbolic shared link, then we need to discard all
+ space allocated for dynamic relocs against symbols defined in a
+ regular object. For the normal shared case, discard space for
+ relocs that have become local due to symbol visibility changes.
+ For the non-shared case, discard space for symbols which turn out
+ to need copy relocs or are not dynamic. We also need to lose
+ relocs we've allocated for long branch stubs if we know we won't
+ be generating a stub. */
+
+ eh = (struct elf32_hppa_link_hash_entry *) h;
+ if (eh->reloc_entries == NULL)
+ return true;
+
+ /* First handle the non-shared case. */
+ if (!info->shared
+ && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
+ && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ || (hplink->root.dynamic_sections_created
+ && (h->root.type == bfd_link_hash_undefweak
+ || h->root.type == bfd_link_hash_undefined))))
+ {
+ /* Make sure this symbol is output as a dynamic symbol.
+ Undefined weak syms won't yet be marked as dynamic. */
+ if (h->dynindx == -1
+ && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0
+ && h->type != STT_PARISC_MILLI)
+ {
+ if (! bfd_elf32_link_record_dynamic_symbol (info, h))
+ return false;
+ }
- switch (r_type)
+ /* If that succeeded, we know we'll be keeping all the relocs. */
+ if (h->dynindx != -1)
+ return true;
+ }
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT
+ /* Handle the stub reloc case. If we have a plt entry for the
+ function, we won't be needing long branch stubs. c->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)
{
- case R_HPPA_NONE:
- break;
+ struct elf32_hppa_dyn_reloc_entry *c;
- /* Handle all the basic type 1 relocations. */
- case R_HPPA_32:
- case R_HPPA_11:
- case R_HPPA_14:
- case R_HPPA_17:
- r_field = e_fsel;
- goto do_basic_type_1;
- case R_HPPA_L21:
- r_field = e_lsel;
- goto do_basic_type_1;
- case R_HPPA_R11:
- case R_HPPA_R14:
- case R_HPPA_R17:
- r_field = e_rsel;
- goto do_basic_type_1;
- case R_HPPA_LS21:
- r_field = e_lssel;
- goto do_basic_type_1;
- case R_HPPA_RS11:
- case R_HPPA_RS14:
- case R_HPPA_RS17:
- r_field = e_ldsel;
- goto do_basic_type_1;
- case R_HPPA_LD21:
- r_field = e_ldsel;
- goto do_basic_type_1;
- case R_HPPA_RD11:
- case R_HPPA_RD14:
- case R_HPPA_RD17:
- r_field = e_rdsel;
- goto do_basic_type_1;
- case R_HPPA_LR21:
- r_field = e_lrsel;
- goto do_basic_type_1;
- case R_HPPA_RR14:
- case R_HPPA_RR17:
- r_field = e_rrsel;
+ for (c = eh->reloc_entries; c != NULL; c = c->next)
+ if (c->count == 0)
+ c->section->_raw_size -= sizeof (Elf32_External_Rela);
+ }
+#endif
+
+ /* Discard any relocs in the non-shared case. For the shared case,
+ 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 (!info->shared
+ || ((eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0
+ && ((eh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0
+ || info->symbolic)))
+ {
+ struct elf32_hppa_dyn_reloc_entry *c;
- do_basic_type_1:
- insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr,
- sym_value, r_addend, r_format,
- r_field, r_pcrel);
- break;
+ for (c = eh->reloc_entries; c != NULL; c = c->next)
+ c->section->_raw_size -= c->count * sizeof (Elf32_External_Rela);
+ }
- /* Handle all the basic type 2 relocations. */
- case R_HPPA_GOTOFF_11:
- case R_HPPA_GOTOFF_14:
- r_field = e_fsel;
- goto do_basic_type_2;
- case R_HPPA_GOTOFF_L21:
- r_field = e_lsel;
- goto do_basic_type_2;
- case R_HPPA_GOTOFF_R11:
- case R_HPPA_GOTOFF_R14:
- r_field = e_rsel;
- goto do_basic_type_2;
- case R_HPPA_GOTOFF_LS21:
- r_field = e_lssel;
- goto do_basic_type_2;
- case R_HPPA_GOTOFF_RS11:
- case R_HPPA_GOTOFF_RS14:
- r_field = e_rssel;
- goto do_basic_type_2;
- case R_HPPA_GOTOFF_LD21:
- r_field = e_ldsel;
- goto do_basic_type_2;
- case R_HPPA_GOTOFF_RD11:
- case R_HPPA_GOTOFF_RD14:
- r_field = e_rdsel;
- goto do_basic_type_2;
- case R_HPPA_GOTOFF_LR21:
- r_field = e_lrsel;
- goto do_basic_type_2;
- case R_HPPA_GOTOFF_RR14:
- r_field = e_rrsel;
+ return true;
+}
- do_basic_type_2:
- sym_value -= GOT_value;
- insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr,
- sym_value, r_addend, r_format,
- r_field, r_pcrel);
- break;
+/* This function is called via elf_link_hash_traverse to force
+ millicode symbols local so they do not end up as globals in the
+ dynamic symbol table. We ought to be able to do this in
+ adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called
+ for all dynamic symbols. Arguably, this is a bug in
+ elf_adjust_dynamic_symbol. */
- /* Handle all the basic type 3 relocations. */
- case R_HPPA_ABS_CALL_11:
- case R_HPPA_ABS_CALL_14:
- case R_HPPA_ABS_CALL_17:
- r_field = e_fsel;
- goto do_basic_type_3;
- case R_HPPA_ABS_CALL_L21:
- r_field = e_lsel;
- goto do_basic_type_3;
- case R_HPPA_ABS_CALL_R11:
- case R_HPPA_ABS_CALL_R14:
- case R_HPPA_ABS_CALL_R17:
- r_field = e_rsel;
- goto do_basic_type_3;
- case R_HPPA_ABS_CALL_LS21:
- r_field = e_lssel;
- goto do_basic_type_3;
- case R_HPPA_ABS_CALL_RS11:
- case R_HPPA_ABS_CALL_RS14:
- case R_HPPA_ABS_CALL_RS17:
- r_field = e_rssel;
- goto do_basic_type_3;
- case R_HPPA_ABS_CALL_LD21:
- r_field = e_ldsel;
- goto do_basic_type_3;
- case R_HPPA_ABS_CALL_RD11:
- case R_HPPA_ABS_CALL_RD14:
- case R_HPPA_ABS_CALL_RD17:
- r_field = e_rdsel;
- goto do_basic_type_3;
- case R_HPPA_ABS_CALL_LR21:
- r_field = e_lrsel;
- goto do_basic_type_3;
- case R_HPPA_ABS_CALL_RR14:
- case R_HPPA_ABS_CALL_RR17:
- r_field = e_rrsel;
+static boolean
+clobber_millicode_symbols (h, info)
+ struct elf_link_hash_entry *h;
+ struct bfd_link_info *info;
+{
+ /* We only want to remove these from the dynamic symbol table.
+ Therefore we do not leave ELF_LINK_FORCED_LOCAL set. */
+ if (h->type == STT_PARISC_MILLI)
+ {
+ unsigned short oldflags = h->elf_link_hash_flags;
+ h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL;
+ elf32_hppa_hide_symbol (info, h);
+ h->elf_link_hash_flags &= ~ELF_LINK_FORCED_LOCAL;
+ h->elf_link_hash_flags |= oldflags & ELF_LINK_FORCED_LOCAL;
+ }
+ return true;
+}
- do_basic_type_3:
- insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr,
- sym_value, r_addend, r_format,
- r_field, r_pcrel);
- break;
+/* Set the sizes of the dynamic sections. */
- /* Handle all the basic type 4 relocations. */
- case R_HPPA_PCREL_CALL_11:
- case R_HPPA_PCREL_CALL_14:
- case R_HPPA_PCREL_CALL_17:
- r_field = e_fsel;
- goto do_basic_type_4;
- case R_HPPA_PCREL_CALL_L21:
- r_field = e_lsel;
- goto do_basic_type_4;
- case R_HPPA_PCREL_CALL_R11:
- case R_HPPA_PCREL_CALL_R14:
- case R_HPPA_PCREL_CALL_R17:
- r_field = e_rsel;
- goto do_basic_type_4;
- case R_HPPA_PCREL_CALL_LS21:
- r_field = e_lssel;
- goto do_basic_type_4;
- case R_HPPA_PCREL_CALL_RS11:
- case R_HPPA_PCREL_CALL_RS14:
- case R_HPPA_PCREL_CALL_RS17:
- r_field = e_rssel;
- goto do_basic_type_4;
- case R_HPPA_PCREL_CALL_LD21:
- r_field = e_ldsel;
- goto do_basic_type_4;
- case R_HPPA_PCREL_CALL_RD11:
- case R_HPPA_PCREL_CALL_RD14:
- case R_HPPA_PCREL_CALL_RD17:
- r_field = e_rdsel;
- goto do_basic_type_4;
- case R_HPPA_PCREL_CALL_LR21:
- r_field = e_lrsel;
- goto do_basic_type_4;
- case R_HPPA_PCREL_CALL_RR14:
- case R_HPPA_PCREL_CALL_RR17:
- r_field = e_rrsel;
+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;
+ bfd *i;
+ asection *s;
+ boolean relocs;
+ boolean reltext;
+
+ hplink = hppa_link_hash_table (info);
+ dynobj = hplink->root.dynobj;
+ if (dynobj == NULL)
+ abort ();
+
+ if (hplink->root.dynamic_sections_created)
+ {
+ /* Set the contents of the .interp section to the interpreter. */
+ if (! info->shared)
+ {
+ s = bfd_get_section_by_name (dynobj, ".interp");
+ if (s == NULL)
+ abort ();
+ s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER;
+ s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
+ }
- do_basic_type_4:
- insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr,
- sym_value, r_addend, r_format,
- r_field, r_pcrel);
- break;
+ /* Force millicode symbols local. */
+ elf_link_hash_traverse (&hplink->root,
+ clobber_millicode_symbols,
+ info);
+ }
+ 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);
+ }
- /* Handle all the basic type 5 relocations. */
- case R_HPPA_PLABEL_32:
- case R_HPPA_PLABEL_11:
- case R_HPPA_PLABEL_14:
- r_field = e_fsel;
- goto do_basic_type_5;
- case R_HPPA_PLABEL_L21:
- r_field = e_lsel;
- goto do_basic_type_5;
- case R_HPPA_PLABEL_R11:
- case R_HPPA_PLABEL_R14:
- r_field = e_rsel;
- do_basic_type_5:
- insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr,
- sym_value, r_addend, r_format,
- r_field, r_pcrel);
- break;
+ /* Set up .got and .plt offsets for local syms. */
+ for (i = info->input_bfds; i; i = i->link_next)
+ {
+ bfd_signed_vma *local_got;
+ bfd_signed_vma *end_local_got;
+ bfd_signed_vma *local_plt;
+ bfd_signed_vma *end_local_plt;
+ bfd_size_type locsymcount;
+ Elf_Internal_Shdr *symtab_hdr;
+ asection *srel;
+
+ if (bfd_get_flavour (i) != bfd_target_elf_flavour)
+ continue;
+
+ local_got = elf_local_got_refcounts (i);
+ if (!local_got)
+ continue;
+
+ symtab_hdr = &elf_tdata (i)->symtab_hdr;
+ locsymcount = symtab_hdr->sh_info;
+ end_local_got = local_got + locsymcount;
+ s = hplink->sgot;
+ srel = hplink->srelgot;
+ for (; local_got < end_local_got; ++local_got)
+ {
+ if (*local_got > 0)
+ {
+ *local_got = s->_raw_size;
+ s->_raw_size += GOT_ENTRY_SIZE;
+ if (info->shared)
+ srel->_raw_size += sizeof (Elf32_External_Rela);
+ }
+ else
+ *local_got = (bfd_vma) -1;
+ }
- /* Handle all basic type 6 relocations. */
- case R_HPPA_UNWIND_ENTRY:
- case R_HPPA_UNWIND_ENTRIES:
- hppa_elf_relocate_unwind_table (abfd, data, addr,
- sym_value, r_addend,
- r_type, r_field);
- return bfd_reloc_ok;
-
- /* This is a linker internal relocation. */
- case R_HPPA_STUB_CALL_17:
- /* This relocation is for a branch to a long branch stub.
- Change instruction to a BLE,N. It may also be necessary
- to interchange the branch and its delay slot.
- The original instruction stream is
-
- bl <foo>,r ; call foo using register r as
- ; the return pointer
- XXX ; delay slot instruction
-
- The new instruction stream will be:
-
- XXX ; delay slot instruction
- ble <foo_stub> ; call the long call stub for foo
- ; using r31 as the return pointer
-
- This braindamage is necessary because the compiler may put
- an instruction which uses %r31 in the delay slot of the original
- call. By changing the call instruction from a "bl" to a "ble"
- %r31 gets clobbered before the delay slot executes. This
- also means the stub has to play funny games to make sure
- we return to the instruction just after the BLE rather than
- two instructions after the BLE.
-
- We do not interchange the branch and delay slot if the delay
- slot was already nullified, or if the instruction in the delay
- slot modifies the return pointer to avoid an unconditional
- jump after the call returns (GCC optimization).
-
- None of this horseshit would be necessary if we put the
- stubs between functions and just redirected the "bl" to
- the stub. Live and learn. */
-
- /* Is this instruction nullified? (does this ever happen?) */
- if (insn & 2)
- {
- insn = BLE_N_XXX_0_0;
- bfd_put_32 (abfd, insn, hit_data);
- r_type = R_HPPA_ABS_CALL_17;
- r_pcrel = 0;
- insn = hppa_elf_relocate_insn (abfd, input_section, insn,
- addr, sym_value, r_addend,
- r_format, r_field, r_pcrel);
- }
+ local_plt = end_local_got;
+ end_local_plt = local_plt + locsymcount;
+ if (! hplink->root.dynamic_sections_created)
+ {
+ /* Won't be used, but be safe. */
+ for (; local_plt < end_local_plt; ++local_plt)
+ *local_plt = (bfd_vma) -1;
+ }
else
{
- /* So much for the trivial case... */
- unsigned long old_delay_slot_insn = bfd_get_32 (abfd, hit_data + 4);
- unsigned rtn_reg = (insn & 0x03e00000) >> 21;
-
- if (get_opcode (old_delay_slot_insn) == LDO)
+ s = hplink->splt;
+ srel = hplink->srelplt;
+ for (; local_plt < end_local_plt; ++local_plt)
{
- unsigned ldo_src_reg = (old_delay_slot_insn & 0x03e00000) >> 21;
- unsigned ldo_target_reg = (old_delay_slot_insn & 0x001f0000) >> 16;
-
- /* If the target of the LDO is the same as the return
- register then there is no reordering. We can leave the
- instuction as a non-nullified BLE in this case.
-
- FIXME: This test looks wrong. If we had a ble using
- ldo_target_reg as the *source* we'd fuck this up. */
- if (ldo_target_reg == rtn_reg)
+ if (*local_plt > 0)
{
- unsigned long new_delay_slot_insn = old_delay_slot_insn;
-
- BFD_ASSERT (ldo_src_reg == ldo_target_reg);
- new_delay_slot_insn &= 0xfc00ffff;
- new_delay_slot_insn |= ((31 << 21) | (31 << 16));
- bfd_put_32 (abfd, new_delay_slot_insn, hit_data + 4);
- insn = BLE_XXX_0_0;
- r_type = R_HPPA_ABS_CALL_17;
- r_pcrel = 0;
- insn = hppa_elf_relocate_insn (abfd, input_section, insn,
- addr, sym_value, r_addend,
- r_format, r_field, r_pcrel);
- bfd_put_32 (abfd, insn, hit_data);
- return bfd_reloc_ok;
+ *local_plt = s->_raw_size;
+ s->_raw_size += PLT_ENTRY_SIZE;
+ if (info->shared)
+ srel->_raw_size += sizeof (Elf32_External_Rela);
}
- else if (rtn_reg == 31)
- {
- /* The return register is r31, so this is a millicode
- call. Do not perform any instruction reordering. */
- insn = BLE_XXX_0_0;
- r_type = R_HPPA_ABS_CALL_17;
- r_pcrel = 0;
- insn = hppa_elf_relocate_insn (abfd, input_section, insn,
- addr, sym_value,
- r_addend, r_format,
- r_field, r_pcrel);
- bfd_put_32 (abfd, insn, hit_data);
- return bfd_reloc_ok;
- }
else
- {
- /* Check to see if the delay slot instruction has a
- relocation. If so, we need to change the address
- field of it because the instruction it relocates
- is going to be moved. Oh what a mess. */
- arelent * next_reloc_entry = reloc_entry+1;
-
- if (next_reloc_entry->address == reloc_entry->address + 4)
- next_reloc_entry->address -= 4;
-
- insn = old_delay_slot_insn;
- bfd_put_32 (abfd, insn, hit_data);
- insn = BLE_N_XXX_0_0;
- bfd_put_32 (abfd, insn, hit_data + 4);
- r_type = R_HPPA_ABS_CALL_17;
- r_pcrel = 0;
- insn = hppa_elf_relocate_insn (abfd, input_section, insn,
- addr + 4,
- sym_value, r_addend,
- r_format, r_field, r_pcrel);
- bfd_put_32 (abfd, insn, hit_data + 4);
- return bfd_reloc_ok;
- }
+ *local_plt = (bfd_vma) -1;
}
- /* Same comments as above regarding incorrect test. */
- else if (rtn_reg == 31)
- {
- /* The return register is r31, so this is a millicode call.
- Perform no instruction reordering in this case. */
- insn = BLE_XXX_0_0;
- r_type = R_HPPA_ABS_CALL_17;
- r_pcrel = 0;
- insn = hppa_elf_relocate_insn (abfd, input_section, insn,
- addr, sym_value,
- r_addend, r_format,
- r_field, r_pcrel);
- bfd_put_32 (abfd, insn, hit_data);
- return bfd_reloc_ok;
- }
- else
+ }
+ }
+
+ /* Allocate global sym .plt and .got entries. Also discard all
+ unneeded relocs. */
+ elf_link_hash_traverse (&hplink->root,
+ allocate_plt_and_got_and_discard_relocs,
+ (PTR) info);
+
+ /* 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)
+ {
+ if ((s->flags & SEC_LINKER_CREATED) == 0)
+ continue;
+
+ if (s == hplink->splt)
+ {
+ if (hplink->need_plt_stub)
{
- /* Check to see if the delay slot instruction has a
- relocation. If so, we need to change its address
- field because the instruction it relocates is going
- to be moved. */
- arelent * next_reloc_entry = reloc_entry+1;
-
- if (next_reloc_entry->address == reloc_entry->address + 4)
- next_reloc_entry->address -= 4;
-
- insn = old_delay_slot_insn;
- bfd_put_32 (abfd, insn, hit_data);
- insn = BLE_N_XXX_0_0;
- bfd_put_32 (abfd, insn, hit_data + 4);
- r_type = R_HPPA_ABS_CALL_17;
- r_pcrel = 0;
- insn = hppa_elf_relocate_insn (abfd, input_section, insn,
- addr + 4, sym_value,
- r_addend, r_format,
- r_field, r_pcrel);
- bfd_put_32 (abfd, insn, hit_data + 4);
- return bfd_reloc_ok;
+ /* Make space for the plt stub at the end of the .plt
+ section. We want this stub right at the end, up
+ against the .got section. */
+ int gotalign = bfd_section_alignment (dynobj, hplink->sgot);
+ int pltalign = bfd_section_alignment (dynobj, s);
+ bfd_size_type mask;
+
+ if (gotalign > pltalign)
+ bfd_set_section_alignment (dynobj, s, gotalign);
+ mask = ((bfd_size_type) 1 << gotalign) - 1;
+ s->_raw_size = (s->_raw_size + sizeof (plt_stub) + mask) & ~mask;
}
}
- break;
-
- /* Something we don't know how to handle. */
- default:
- *error_message = (char *) "Unrecognized reloc";
- return bfd_reloc_notsupported;
- }
+ else if (s == hplink->sgot)
+ ;
+ else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0)
+ {
+ if (s->_raw_size != 0)
+ {
+ asection *target;
+ const char *outname;
+
+ /* Remember whether there are any reloc sections other
+ than .rela.plt. */
+ if (s != hplink->srelplt)
+ relocs = true;
+
+ /* If this relocation section applies to a read only
+ section, then we probably need a DT_TEXTREL entry. */
+ 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
+ {
+ /* It's not one of our sections, so don't allocate space. */
+ continue;
+ }
- /* Update the instruction word. */
- bfd_put_32 (abfd, insn, hit_data);
- return (bfd_reloc_ok);
-}
+ 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;
+ }
-/* Return the address of the howto table entry to perform the CODE
- relocation for an ARCH machine. */
+ /* 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;
+ }
-static CONST reloc_howto_type *
-elf_hppa_reloc_type_lookup (arch, code)
- bfd_arch_info_type *arch;
- bfd_reloc_code_real_type code;
-{
- if ((int) code < (int) R_HPPA_UNIMPLEMENTED)
+ if (hplink->root.dynamic_sections_created)
{
- BFD_ASSERT ((int) elf_hppa_howto_table[(int) code].type == (int) code);
- return &elf_hppa_howto_table[(int) code];
+ /* 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. */
+#define add_dynamic_entry(TAG, VAL) \
+ bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
+
+ if (!add_dynamic_entry (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 (!add_dynamic_entry (DT_DEBUG, 0))
+ return false;
+ }
+
+ if (hplink->srelplt->_raw_size != 0)
+ {
+ if (!add_dynamic_entry (DT_PLTRELSZ, 0)
+ || !add_dynamic_entry (DT_PLTREL, DT_RELA)
+ || !add_dynamic_entry (DT_JMPREL, 0))
+ return false;
+ }
+
+ if (relocs)
+ {
+ if (!add_dynamic_entry (DT_RELA, 0)
+ || !add_dynamic_entry (DT_RELASZ, 0)
+ || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
+ return false;
+ }
+
+ if (reltext)
+ {
+ if (!add_dynamic_entry (DT_TEXTREL, 0))
+ return false;
+ info->flags |= DF_TEXTREL;
+ }
}
- return NULL;
+#undef add_dynamic_entry
+
+ return true;
}
+/* External entry points for sizing and building linker stubs. */
-/* Update the symbol extention chain to include the symbol pointed to
- by SYMBOLP if SYMBOLP is a function symbol. Used internally and by GAS. */
+/* Determine and set the size of the stub section for a final link.
-void
-elf_hppa_tc_symbol (abfd, symbolP, sym_idx, symext_root, symext_last)
- bfd *abfd;
- elf_symbol_type *symbolP;
- int sym_idx;
- symext_chainS **symext_root;
- symext_chainS **symext_last;
+ 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 (output_bfd, stub_bfd, info, multi_subspace, group_size,
+ add_stub_section, layout_sections_again)
+ bfd *output_bfd;
+ bfd *stub_bfd;
+ struct bfd_link_info *info;
+ boolean multi_subspace;
+ bfd_signed_vma group_size;
+ asection * (*add_stub_section) PARAMS ((const char *, asection *));
+ void (*layout_sections_again) PARAMS ((void));
{
- symext_chainS *symextP;
- unsigned int arg_reloc;
+ bfd *input_bfd;
+ asection *section;
+ asection **input_list, **list;
+ Elf_Internal_Sym *local_syms, **all_local_syms;
+ unsigned int bfd_indx, bfd_count;
+ int top_id, top_index;
+ struct elf32_hppa_link_hash_table *hplink;
+ bfd_size_type stub_group_size;
+ boolean stubs_always_before_branch;
+ boolean stub_changed = 0;
+ boolean ret = 0;
+ bfd_size_type amt;
+
+ 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;
+ stubs_always_before_branch = group_size < 0;
+ if (group_size < 0)
+ stub_group_size = -group_size;
+ else
+ stub_group_size = group_size;
+ if (stub_group_size == 1)
+ {
+ /* Default values. */
+ stub_group_size = 8000000;
+ if (hplink->has_17bit_branch || hplink->multi_subspace)
+ stub_group_size = 250000;
+ if (hplink->has_12bit_branch)
+ stub_group_size = 7812;
+ }
- /* Only functions can have argument relocations. */
- if (!(symbolP->symbol.flags & BSF_FUNCTION))
- return;
+ /* Count the number of input BFDs and find the top input section id. */
+ for (input_bfd = info->input_bfds, bfd_count = 0, top_id = 0;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link_next)
+ {
+ bfd_count += 1;
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ if (top_id < section->id)
+ top_id = section->id;
+ }
+ }
- arg_reloc = symbolP->tc_data.hppa_arg_reloc;
+ amt = sizeof (struct map_stub) * (top_id + 1);
+ hplink->stub_group = (struct map_stub *) bfd_zmalloc (amt);
+ if (hplink->stub_group == NULL)
+ return false;
- /* If there are no argument relocation bits, then no relocation is
- necessary. Do not add this to the symextn section. */
- if (arg_reloc == 0)
- return;
+ /* Make a list of input sections for each output section included in
+ the link.
- /* Allocate memory and initialize this entry. */
- symextP = (symext_chainS *) bfd_alloc (abfd, sizeof (symext_chainS) * 2);
- if (!symextP)
+ We can't use output_bfd->section_count here to find the top output
+ section index as some sections may have been removed, and
+ _bfd_strip_section_from_output doesn't renumber the indices. */
+ for (section = output_bfd->sections, top_index = 0;
+ section != NULL;
+ section = section->next)
{
- bfd_set_error (bfd_error_no_memory);
- abort(); /* FIXME */
+ if (top_index < section->index)
+ top_index = section->index;
}
- symextP[0].entry = ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX, sym_idx);
- symextP[0].next = &symextP[1];
+ amt = sizeof (asection *) * (top_index + 1);
+ input_list = (asection **) bfd_malloc (amt);
+ if (input_list == NULL)
+ return false;
+
+ /* For sections we aren't interested in, mark their entries with a
+ value we can check later. */
+ list = input_list + top_index;
+ do
+ *list = bfd_abs_section_ptr;
+ while (list-- != input_list);
+
+ for (section = output_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ if ((section->flags & SEC_CODE) != 0)
+ input_list[section->index] = NULL;
+ }
- symextP[1].entry = ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC, arg_reloc);
- symextP[1].next = NULL;
+ /* Now actually build the lists. */
+ for (input_bfd = info->input_bfds;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link_next)
+ {
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ if (section->output_section != NULL
+ && section->output_section->owner == output_bfd
+ && section->output_section->index <= top_index)
+ {
+ list = input_list + section->output_section->index;
+ if (*list != bfd_abs_section_ptr)
+ {
+ /* Steal the link_sec pointer for our list. */
+#define PREV_SEC(sec) (hplink->stub_group[(sec)->id].link_sec)
+ /* This happens to make the list in reverse order,
+ which is what we want. */
+ PREV_SEC (section) = *list;
+ *list = section;
+ }
+ }
+ }
+ }
- /* Now update the chain itself so it can be walked later to build
- the symbol extension section. */
- if (*symext_root == NULL)
+ /* See whether we can group stub sections together. Grouping stub
+ sections may result in fewer stubs. More importantly, we need to
+ put all .init* and .fini* stubs at the beginning of the .init or
+ .fini output sections respectively, because glibc splits the
+ _init and _fini functions into multiple parts. Putting a stub in
+ the middle of a function is not a good idea. */
+ list = input_list + top_index;
+ do
{
- *symext_root = &symextP[0];
- *symext_last = &symextP[1];
+ asection *tail = *list;
+ if (tail == bfd_abs_section_ptr)
+ continue;
+ while (tail != NULL)
+ {
+ asection *curr;
+ asection *prev;
+ bfd_size_type total;
+
+ curr = tail;
+ if (tail->_cooked_size)
+ total = tail->_cooked_size;
+ else
+ total = tail->_raw_size;
+ while ((prev = PREV_SEC (curr)) != NULL
+ && ((total += curr->output_offset - prev->output_offset)
+ < stub_group_size))
+ curr = prev;
+
+ /* OK, the size from the start of CURR to the end is less
+ than 250000 bytes and thus can be handled by one stub
+ section. (or the tail section is itself larger than
+ 250000 bytes, in which case we may be toast.)
+ We should really be keeping track of the total size of
+ stubs added here, as stubs contribute to the final output
+ section size. That's a little tricky, and this way will
+ only break if stubs added total more than 12144 bytes, or
+ 1518 long branch stubs. It seems unlikely for more than
+ 1518 different functions to be called, especially from
+ code only 250000 bytes long. */
+ do
+ {
+ prev = PREV_SEC (tail);
+ /* Set up this stub group. */
+ hplink->stub_group[tail->id].link_sec = curr;
+ }
+ while (tail != curr && (tail = prev) != NULL);
+
+ /* But wait, there's more! Input sections up to 250000
+ bytes before the stub section can be handled by it too. */
+ if (!stubs_always_before_branch)
+ {
+ total = 0;
+ while (prev != NULL
+ && ((total += tail->output_offset - prev->output_offset)
+ < stub_group_size))
+ {
+ tail = prev;
+ prev = PREV_SEC (tail);
+ hplink->stub_group[tail->id].link_sec = curr;
+ }
+ }
+ tail = prev;
+ }
}
- else
+ while (list-- != input_list);
+ free (input_list);
+#undef PREV_SEC
+
+ /* 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. */
+ amt = sizeof (Elf_Internal_Sym *) * bfd_count;
+ all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt);
+ if (all_local_syms == NULL)
+ return false;
+
+ /* 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, bfd_indx = 0;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link_next, bfd_indx++)
{
- (*symext_last)->next = &symextP[0];
- *symext_last = &symextP[1];
+ Elf_Internal_Shdr *symtab_hdr;
+ Elf_Internal_Sym *isym;
+ Elf32_External_Sym *ext_syms, *esym, *end_sy;
+ bfd_size_type sec_size;
+
+ /* We'll need the symbol table in a second. */
+ symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
+ if (symtab_hdr->sh_info == 0)
+ continue;
+
+ /* We need an array of the local symbols attached to the input bfd.
+ Unfortunately, we're going to have to read & swap them in. */
+ sec_size = symtab_hdr->sh_info;
+ sec_size *= sizeof (Elf_Internal_Sym);
+ local_syms = (Elf_Internal_Sym *) bfd_malloc (sec_size);
+ if (local_syms == NULL)
+ {
+ goto error_ret_free_local;
+ }
+ all_local_syms[bfd_indx] = local_syms;
+ sec_size = symtab_hdr->sh_info;
+ sec_size *= sizeof (Elf32_External_Sym);
+ ext_syms = (Elf32_External_Sym *) bfd_malloc (sec_size);
+ if (ext_syms == NULL)
+ {
+ goto error_ret_free_local;
+ }
+
+ if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0
+ || (bfd_bread (ext_syms, sec_size, input_bfd) != sec_size))
+ {
+ free (ext_syms);
+ goto error_ret_free_local;
+ }
+
+ /* Swap the local symbols in. */
+ isym = local_syms;
+ esym = ext_syms;
+ for (end_sy = esym + symtab_hdr->sh_info; esym < end_sy; esym++, isym++)
+ bfd_elf32_swap_symbol_in (input_bfd, esym, isym);
+
+ /* Now we can free the external symbols. */
+ free (ext_syms);
+
+#if ! LONG_BRANCH_PIC_IN_SHLIB
+ /* If this is a shared link, find all the stub reloc sections. */
+ if (info->shared)
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ char *name;
+ asection *reloc_sec;
+
+ name = bfd_malloc ((bfd_size_type) strlen (section->name)
+ + sizeof STUB_SUFFIX
+ + 5);
+ if (name == NULL)
+ return false;
+ sprintf (name, ".rela%s%s", section->name, STUB_SUFFIX);
+ reloc_sec = bfd_get_section_by_name (hplink->root.dynobj, name);
+ hplink->stub_group[section->id].reloc_sec = reloc_sec;
+ free (name);
+ }
+#endif
+
+ if (info->shared && hplink->multi_subspace)
+ {
+ struct elf_link_hash_entry **sym_hashes;
+ struct elf_link_hash_entry **end_hashes;
+ unsigned int symcount;
+
+ symcount = (symtab_hdr->sh_size / sizeof (Elf32_External_Sym)
+ - symtab_hdr->sh_info);
+ sym_hashes = elf_sym_hashes (input_bfd);
+ end_hashes = sym_hashes + symcount;
+
+ /* Look through the global syms for functions; We need to
+ build export stubs for all globally visible functions. */
+ for (; sym_hashes < end_hashes; sym_hashes++)
+ {
+ struct elf32_hppa_link_hash_entry *hash;
+
+ hash = (struct elf32_hppa_link_hash_entry *) *sym_hashes;
+
+ 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->output_section->owner
+ == output_bfd)
+ && 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, hplink);
+ 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);
+ }
+ }
+ }
+ }
}
-}
-/* Build the symbol extension section. Used internally and by GAS. */
+ while (1)
+ {
+ asection *stub_sec;
+
+ for (input_bfd = info->input_bfds, bfd_indx = 0;
+ input_bfd != NULL;
+ input_bfd = input_bfd->link_next, bfd_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[bfd_indx];
+
+ /* Walk over each section attached to the input bfd. */
+ for (section = input_bfd->sections;
+ section != NULL;
+ section = section->next)
+ {
+ 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;
+
+ /* If this section is a link-once section that will be
+ discarded, then don't create any stubs. */
+ if (section->output_section == NULL
+ || section->output_section->owner != output_bfd)
+ continue;
+
+ /* Allocate space for the external relocations. */
+ amt = section->reloc_count;
+ amt *= sizeof (Elf32_External_Rela);
+ external_relocs = (Elf32_External_Rela *) bfd_malloc (amt);
+ if (external_relocs == NULL)
+ {
+ goto error_ret_free_local;
+ }
+
+ /* Likewise for the internal relocations. */
+ amt = section->reloc_count;
+ amt *= sizeof (Elf_Internal_Rela);
+ internal_relocs = (Elf_Internal_Rela *) bfd_malloc (amt);
+ 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_bread (external_relocs,
+ 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;
+ const asection *id_sec;
+
+ 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]);
-void
-elf_hppa_tc_make_sections (abfd, symext_root)
- bfd *abfd;
- symext_chainS *symext_root;
-{
- symext_chainS *symextP;
- int size, n, i;
- asection *symextn_sec;
+ 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);
- /* FIXME: Huh? I don't see what this is supposed to do for us. */
- hppa_elf_stub_finish (abfd);
+ 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;
+ }
+ }
- /* If there are no entries in the symbol extension chain, then
- there is no symbol extension section. */
- if (symext_root == NULL)
- return;
+ /* 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;
- /* Count the number of entries on the chain. */
- for (n = 0, symextP = symext_root; symextP; symextP = symextP->next, ++n)
- ;
+ /* Support for grouping stub sections. */
+ id_sec = hplink->stub_group[section->id].link_sec;
- /* Create the symbol extension section and set some appropriate
- attributes. */
- size = sizeof (symext_entryS) * n;
- symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME);
- if (symextn_sec == (asection *) 0)
- {
- symextn_sec = bfd_make_section (abfd, SYMEXTN_SECTION_NAME);
- bfd_set_section_flags (abfd,
- symextn_sec,
- SEC_LOAD | SEC_HAS_CONTENTS | SEC_DATA);
- symextn_sec->output_section = symextn_sec;
- symextn_sec->output_offset = 0;
- bfd_set_section_alignment (abfd, symextn_sec, 2);
- }
- bfd_set_section_size (abfd, symextn_sec, symextn_contents_real_size);
- symextn_contents_real_size = size;
+ /* Get the name of this stub. */
+ stub_name = hppa_stub_name (id_sec, sym_sec, hash, irela);
+ if (!stub_name)
+ goto error_ret_free_internal;
- /* Grab some memory for the contents of the symbol extension section
- itself. */
- symextn_contents = (symext_entryS *) bfd_alloc (abfd, size);
- if (!symextn_contents)
- {
- bfd_set_error (bfd_error_no_memory);
- abort(); /* FIXME */
- }
+ 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;
+ }
- /* Fill in the contents of the symbol extension section. */
- for (i = 0, symextP = symext_root; symextP; symextP = symextP->next, ++i)
- symextn_contents[i] = symextP->entry;
+ stub_entry = hppa_add_stub (stub_name, section, hplink);
+ if (stub_entry == NULL)
+ {
+ free (stub_name);
+ goto error_ret_free_local;
+ }
- return;
-}
+ 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;
+ }
-/* Return the symbol extension record of type TYPE for the symbol SYM. */
+ /* We're done with the internal relocs, free them. */
+ free (internal_relocs);
+ }
+ }
-static symext_entryS
-elf32_hppa_get_sym_extn (abfd, sym, type)
- bfd *abfd;
- asymbol *sym;
- int type;
-{
- switch (type)
- {
- case HPPA_SXT_SYMNDX:
- case HPPA_SXT_NULL:
- return (symext_entryS) 0;
- case HPPA_SXT_ARG_RELOC:
+ if (!stub_changed)
+ break;
+
+ /* OK, we've added some stubs. Find out the new size of the
+ stub sections. */
+ for (stub_sec = hplink->stub_bfd->sections;
+ stub_sec != NULL;
+ stub_sec = stub_sec->next)
+ {
+ stub_sec->_raw_size = 0;
+ stub_sec->_cooked_size = 0;
+ }
+#if ! LONG_BRANCH_PIC_IN_SHLIB
{
- elf_symbol_type *esymP = (elf_symbol_type *) sym;
+ int i;
- return (symext_entryS) esymP->tc_data.hppa_arg_reloc;
+ for (i = top_id; i >= 0; --i)
+ {
+ /* This will probably hit the same section many times.. */
+ stub_sec = hplink->stub_group[i].reloc_sec;
+ if (stub_sec != NULL)
+ {
+ stub_sec->_raw_size = 0;
+ stub_sec->_cooked_size = 0;
+ }
+ }
}
- /* This should never happen. */
- default:
- abort();
- }
-}
-
-/* Search the chain of stub descriptions and locate the stub
- description for this the given section within the given bfd.
-
- FIXME: I see yet another wonderful linear linked list search
- here. This is probably bad. */
+#endif
-static elf32_hppa_stub_description *
-find_stubs (abfd, stub_sec)
- bfd *abfd;
- asection *stub_sec;
-{
- elf32_hppa_stub_description *stubP;
+ bfd_hash_traverse (&hplink->stub_hash_table,
+ hppa_size_one_stub,
+ hplink);
- for (stubP = elf_hppa_stub_rootP; stubP; stubP = stubP->next)
- {
- /* Is this the right one? */
- if (stubP->this_bfd == abfd && stubP->stub_sec == stub_sec)
- return stubP;
+ /* Ask the linker to do its stuff. */
+ (*hplink->layout_sections_again) ();
+ stub_changed = 0;
}
- return NULL;
-}
-
-static elf32_hppa_stub_description *
-new_stub (abfd, stub_sec, link_info)
- bfd *abfd;
- asection *stub_sec;
- struct bfd_link_info *link_info;
-{
- elf32_hppa_stub_description *stub = find_stubs (abfd, stub_sec);
- /* If we found a list for this bfd, then use it. */
- if (stub)
- return stub;
+ ret = 1;
- /* Nope, allocate and initialize a new entry in the stub list chain. */
- stub = (elf32_hppa_stub_description *)
- bfd_zalloc (abfd, sizeof (elf32_hppa_stub_description));
- if (stub)
- {
- stub->this_bfd = abfd;
- stub->stub_sec = stub_sec;
- stub->real_size = 0;
- stub->allocated_size = 0;
- stub->stub_contents = NULL;
- stub->stub_secp = NULL;
- stub->link_info = link_info;
-
- stub->next = elf_hppa_stub_rootP;
- elf_hppa_stub_rootP = stub;
- }
- else
- {
- bfd_set_error (bfd_error_no_memory);
- abort(); /* FIXME */
- }
+ error_ret_free_local:
+ while (bfd_count-- > 0)
+ if (all_local_syms[bfd_count])
+ free (all_local_syms[bfd_count]);
+ free (all_local_syms);
- return stub;
+ return ret;
}
-/* Try and locate a stub with the name NAME within the stubs
- associated with ABFD. More linked list searches. */
+/* For a final link, this function is called after we have sized the
+ stubs to provide a value for __gp. */
-static elf32_hppa_stub_name_list *
-find_stub_by_name (abfd, stub_sec, name)
+boolean
+elf32_hppa_set_gp (abfd, info)
bfd *abfd;
- asection *stub_sec;
- char *name;
+ struct bfd_link_info *info;
{
- /* Find the stubs associated with this bfd. */
- elf32_hppa_stub_description *stub = find_stubs (abfd, stub_sec);
-
- /* If found, then we have to walk down them looking for a match. */
- if (stub)
+ struct elf32_hppa_link_hash_table *hplink;
+ struct elf_link_hash_entry *h;
+ asection *sec;
+ bfd_vma gp_val;
+
+ hplink = hppa_link_hash_table (info);
+ h = elf_link_hash_lookup (&hplink->root, "$global$",
+ false, false, false);
+
+ if (h != NULL
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak))
{
- elf32_hppa_stub_name_list *name_listP;
-
- for (name_listP = stub->stub_listP;
- name_listP;
- name_listP = name_listP->next)
+ gp_val = h->root.u.def.value;
+ sec = h->root.u.def.section;
+ }
+ else
+ {
+ /* Choose to point our LTP at, in this order, one of .plt, .got,
+ or .data, if these sections exist. In the case of choosing
+ .plt try to make the LTP ideal for addressing anywhere in the
+ .plt or .got with a 14 bit signed offset. Typically, the end
+ of the .plt is the start of the .got, so choose .plt + 0x2000
+ if either the .plt or .got is larger than 0x2000. If both
+ the .plt and .got are smaller than 0x2000, choose the end of
+ the .plt section. */
+
+ sec = hplink->splt;
+ if (sec != NULL)
{
- if (!strcmp (name_listP->sym->name, name))
- return name_listP;
+ gp_val = sec->_raw_size;
+ if (gp_val > 0x2000
+ || (hplink->sgot && hplink->sgot->_raw_size > 0x2000))
+ {
+ gp_val = 0x2000;
+ }
}
- }
-
- /* Not found. */
- return 0;
-}
-
-/* Add a new stub (SYM) to the list of stubs associated with the given BFD. */
-static elf32_hppa_stub_name_list *
-add_stub_by_name(abfd, stub_sec, sym, link_info)
- bfd *abfd;
- asection *stub_sec;
- asymbol *sym;
- struct bfd_link_info *link_info;
-{
- elf32_hppa_stub_description *stub = find_stubs (abfd, stub_sec);
- elf32_hppa_stub_name_list *stub_entry;
-
- /* If no stubs are associated with this bfd, then we have to make
- a chain-of-stubs associated with this bfd. */
- if (!stub)
- stub = new_stub (abfd, stub_sec, link_info);
-
- if (stub)
- {
- /* Allocate and initialize an entry in the stub chain. */
- stub_entry = (elf32_hppa_stub_name_list *)
- bfd_zalloc (abfd, sizeof (elf32_hppa_stub_name_list));
-
- if (stub_entry)
- {
- stub_entry->size = 0;
- stub_entry->sym = sym;
- stub_entry->stub_desc = stub;
- /* First byte of this stub is the pointer to
- the next available location in the stub buffer. */
- stub_entry->stub_secp = stub->stub_secp;
- /* Add it to the chain. */
- if (stub->stub_listP)
- stub_entry->next = stub->stub_listP;
+ else
+ {
+ gp_val = 0;
+ sec = hplink->sgot;
+ if (sec != NULL)
+ {
+ /* We know we don't have a .plt. If .got is large,
+ offset our LTP. */
+ if (sec->_raw_size > 0x2000)
+ gp_val = 0x2000;
+ }
else
- stub_entry->next = NULL;
- stub->stub_listP = stub_entry;
- return stub_entry;
+ {
+ /* No .plt or .got. Who cares what the LTP is? */
+ sec = bfd_get_section_by_name (abfd, ".data");
+ }
}
- else
+
+ if (h != NULL)
{
- bfd_set_error (bfd_error_no_memory);
- abort(); /* FIXME */
+ h->root.type = bfd_link_hash_defined;
+ h->root.u.def.value = gp_val;
+ if (sec != NULL)
+ h->root.u.def.section = sec;
+ else
+ h->root.u.def.section = bfd_abs_section_ptr;
}
}
- /* Death by mis-adventure. */
- abort ();
- return (elf32_hppa_stub_name_list *)NULL;
+
+ if (sec != NULL && sec->output_section != NULL)
+ gp_val += sec->output_section->vma + sec->output_offset;
+
+ elf_gp (abfd) = gp_val;
+ return true;
}
-/* For the given caller/callee argument location information and the
- type of relocation (arguments or return value), return the type
- of argument relocation needed to make caller and callee happy. */
+/* 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. */
-static arg_reloc_type
-type_of_mismatch (caller_bits, callee_bits, type)
- int caller_bits;
- int callee_bits;
- int type;
+boolean
+elf32_hppa_build_stubs (info)
+ struct bfd_link_info *info;
{
- switch (type)
+ 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)
{
- case ARGUMENTS:
- return mismatches[caller_bits][callee_bits];
- case RETURN_VALUE:
- return retval_mismatches[caller_bits][callee_bits];
+ bfd_size_type size;
+
+ /* Allocate memory to hold the linker stubs. */
+ size = stub_sec->_raw_size;
+ stub_sec->contents = (unsigned char *) bfd_zalloc (hplink->stub_bfd,
+ size);
+ if (stub_sec->contents == NULL && size != 0)
+ return false;
+ stub_sec->_raw_size = 0;
}
- return ARG_RELOC_ERR;
-}
-/* Extract specific argument location bits for WHICH from the
- the full argument location information in AR. */
-#define EXTRACT_ARBITS(ar, which) ((ar) >> (8 - ((which) * 2))) & 3
-
-/* Add the new instruction INSN into the stub area denoted by ENTRY.
- FIXME: Looks like more cases where we assume sizeof (int) ==
- sizeof (insn) which may not be true if building cross tools. */
-#define NEW_INSTRUCTION(entry, insn) \
-{ \
- *((entry)->stub_desc->stub_secp)++ = (insn); \
- (entry)->stub_desc->real_size += sizeof (int); \
- (entry)->size += sizeof(int); \
- bfd_set_section_size((entry)->stub_desc->this_bfd, \
- (entry)->stub_desc->stub_sec, \
- (entry)->stub_desc->real_size); \
-}
+ /* Build the stubs as directed by the stub hash table. */
+ table = &hplink->stub_hash_table;
+ bfd_hash_traverse (table, hppa_build_one_stub, info);
-/* Find the offset of the current stub? Looks more like it
- finds the offset of the last instruction to me. */
-#define CURRENT_STUB_OFFSET(entry) \
- ((char *)(entry)->stub_desc->stub_secp \
- - (char *)(entry)->stub_desc->stub_contents - 4)
+ return true;
+}
-/* All the stubs have already been built, finish up stub stuff
- by applying relocations to the stubs. */
+/* Perform a final link. */
-static void
-hppa_elf_stub_finish (output_bfd)
- bfd *output_bfd;
+static boolean
+elf32_hppa_final_link (abfd, info)
+ bfd *abfd;
+ struct bfd_link_info *info;
{
- elf32_hppa_stub_description *stub_list = elf_hppa_stub_rootP;
-
- /* If the stubs have been finished, then we're already done. */
- if (stubs_finished)
- return;
-
- /* Walk down the list of stub lists. */
- for (; stub_list; stub_list = stub_list->next)
+ asection *s;
+
+ /* Invoke the regular ELF linker to do all the work. */
+ if (!bfd_elf32_bfd_final_link (abfd, info))
+ return false;
+
+ /* If we're producing a final executable, sort the contents of the
+ unwind section. Magic section names, but this is much safer than
+ having elf32_hppa_relocate_section remember where SEGREL32 relocs
+ occurred. Consider what happens if someone inept creates a
+ linker script that puts unwind information in .text. */
+ s = bfd_get_section_by_name (abfd, ".PARISC.unwind");
+ if (s != NULL)
{
- /* If this list has stubs, then do something. */
- if (stub_list->real_size)
- {
- bfd *stub_bfd = stub_list->this_bfd;
- asection *stub_sec = bfd_get_section_by_name (stub_bfd,
- ".hppa_linker_stubs");
- bfd_size_type reloc_size;
- arelent **reloc_vector;
+ bfd_size_type size;
+ char *contents;
- /* Some sanity checking. */
- BFD_ASSERT (stub_sec == stub_list->stub_sec);
- BFD_ASSERT (stub_sec);
+ size = s->_raw_size;
+ contents = bfd_malloc (size);
+ if (contents == NULL)
+ return false;
- /* For stub sections raw_size == cooked_size. Also update
- reloc_done as we're handling the relocs now. */
- stub_sec->_cooked_size = stub_sec->_raw_size;
- stub_sec->reloc_done = true;
-
- /* Make space to hold the relocations for the stub section. */
- reloc_size = bfd_get_reloc_upper_bound (stub_bfd, stub_sec);
- reloc_vector = (arelent **) alloca (reloc_size);
-
- /* If we have relocations, do them. */
- if (bfd_canonicalize_reloc (stub_bfd, stub_sec, reloc_vector,
- output_bfd->outsymbols))
- {
- arelent **parent;
- for (parent = reloc_vector; *parent != NULL; parent++)
- {
- char *err = NULL;
- bfd_reloc_status_type r =
- bfd_perform_relocation (stub_bfd, *parent,
- stub_list->stub_contents,
- stub_sec, (bfd *) NULL, &err);
-
- /* If there was an error, tell someone about it. */
- if (r != bfd_reloc_ok)
- {
- struct bfd_link_info *link_info = stub_list->link_info;
+ if (! bfd_get_section_contents (abfd, s, contents, (file_ptr) 0, size))
+ return false;
- switch (r)
- {
- case bfd_reloc_undefined:
- if (! ((*link_info->callbacks->undefined_symbol)
- (link_info,
- bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
- stub_bfd, stub_sec, (*parent)->address)))
- abort ();
- break;
- case bfd_reloc_dangerous:
- if (! ((*link_info->callbacks->reloc_dangerous)
- (link_info, err, stub_bfd, stub_sec,
- (*parent)->address)))
- abort ();
- break;
- case bfd_reloc_overflow:
- {
- if (! ((*link_info->callbacks->reloc_overflow)
- (link_info,
- bfd_asymbol_name (*(*parent)->sym_ptr_ptr),
- (*parent)->howto->name,
- (*parent)->addend,
- stub_bfd, stub_sec,
- (*parent)->address)))
- abort ();
- }
- break;
- case bfd_reloc_outofrange:
- default:
- abort ();
- break;
- }
- }
- }
- }
+ qsort (contents, (size_t) (size / 16), 16, hppa_unwind_entry_compare);
- /* All done with the relocations. Set the final contents
- of the stub section. FIXME: no check of return value! */
- bfd_set_section_contents (output_bfd, stub_sec,
- stub_list->stub_contents,
- 0, stub_list->real_size);
- }
+ if (! bfd_set_section_contents (abfd, s, contents, (file_ptr) 0, size))
+ return false;
}
- /* All done. */
- stubs_finished = true;
+ return true;
}
-/* Allocate a new relocation entry to be used in a linker stub. */
+/* Record the lowest address for the data and text segments. */
static void
-hppa_elf_stub_reloc (stub_desc, output_bfd, target_sym, offset, type)
- elf32_hppa_stub_description *stub_desc;
- bfd *output_bfd;
- asymbol *target_sym;
- int offset;
- elf32_hppa_reloc_type type;
+hppa_record_segment_addr (abfd, section, data)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ asection *section;
+ PTR data;
{
- arelent relent;
- int size;
- Elf_Internal_Shdr *rela_hdr;
+ struct elf32_hppa_link_hash_table *hplink;
+
+ hplink = (struct elf32_hppa_link_hash_table *) data;
- /* I really don't like the realloc nonsense in here. FIXME. */
- if (stub_desc->relocs_allocated_cnt == stub_desc->stub_sec->reloc_count)
+ if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD))
{
- /* Allocate the first few relocation entries. */
- if (stub_desc->stub_sec->relocation == NULL)
+ bfd_vma value = section->vma - section->filepos;
+
+ if ((section->flags & SEC_READONLY) != 0)
{
- stub_desc->relocs_allocated_cnt = STUB_RELOC_INCR;
- size = sizeof (arelent) * stub_desc->relocs_allocated_cnt;
- stub_desc->stub_sec->relocation = (arelent *) bfd_zmalloc (size);
+ if (value < hplink->text_segment_base)
+ hplink->text_segment_base = value;
}
else
{
- /* We've used all the entries we've already allocated. So get
- some more. */
- stub_desc->relocs_allocated_cnt += STUB_RELOC_INCR;
- size = sizeof (arelent) * stub_desc->relocs_allocated_cnt;
- stub_desc->stub_sec->relocation = (arelent *)
- realloc (stub_desc->stub_sec->relocation, size);
- }
- if (!stub_desc->stub_sec->relocation)
- {
- bfd_set_error (bfd_error_no_memory);
- abort (); /* FIXME */
+ if (value < hplink->data_segment_base)
+ hplink->data_segment_base = value;
}
}
-
- rela_hdr = &elf_section_data(stub_desc->stub_sec)->rel_hdr;
- rela_hdr->sh_size += sizeof(Elf32_External_Rela);
-
- /* Fill in the details. */
- relent.address = offset;
- relent.addend = 0;
- relent.sym_ptr_ptr = &target_sym;
- relent.howto = bfd_reloc_type_lookup (stub_desc->this_bfd, type);
-
- /* Save it in the array of relocations for the stub section. */
- memcpy (&stub_desc->stub_sec->relocation[stub_desc->stub_sec->reloc_count++],
- &relent, sizeof (arelent));
}
-/* Build an argument relocation stub. RTN_ADJUST is a hint that an
- adjust to the return pointer from within the stub itself may be
- needed. */
+/* Perform a relocation as part of a final link. */
-static asymbol *
-hppa_elf_build_linker_stub (abfd, output_bfd, link_info, reloc_entry,
- stub_types, rtn_adjust, data, linker_stub_type)
- bfd *abfd;
- bfd *output_bfd;
- struct bfd_link_info *link_info;
- arelent *reloc_entry;
- arg_reloc_type stub_types[5];
- int rtn_adjust;
- unsigned *data;
- hppa_stub_type linker_stub_type;
+static bfd_reloc_status_type
+final_link_relocate (input_section, contents, rel, value, hplink, sym_sec, h)
+ asection *input_section;
+ bfd_byte *contents;
+ const Elf_Internal_Rela *rel;
+ bfd_vma value;
+ struct elf32_hppa_link_hash_table *hplink;
+ asection *sym_sec;
+ struct elf32_hppa_link_hash_entry *h;
{
- int i;
- boolean milli, dyncall;
- char stub_sym_name[128];
- elf32_hppa_stub_name_list *stub_entry;
- /* Some initialization. */
- unsigned insn = data[0];
- asymbol *stub_sym = NULL;
- asymbol *target_sym = reloc_entry->sym_ptr_ptr[0];
- asection *stub_sec = bfd_get_section_by_name (abfd, ".hppa_linker_stubs");
- elf32_hppa_stub_description *stub_desc = find_stubs (abfd, stub_sec);
-
- /* Perform some additional checks on whether we should really do the
- return adjustment. For example, if the instruction is nullified
- or if the delay slot contains an instruction that modifies the return
- pointer, then the branch instructions should not be rearranged
- (rtn_adjust is false). */
- if (insn & 2 || insn == 0)
- rtn_adjust = false;
- else
- {
- unsigned delay_insn = data[1];
+ 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);
- if (get_opcode (delay_insn) == LDO
- && (((insn & 0x03e00000) >> 21) == ((delay_insn & 0x001f0000) >> 16)))
- rtn_adjust = false;
- }
-
- /* Some special code for long-call stubs. */
- if (linker_stub_type == HPPA_STUB_LONG_CALL)
+ switch (r_type)
{
-
- /* Is this a millicode call? If so, the return address
- comes in on r31 rather than r2 (rp) so a slightly
- different code sequence is needed. */
- unsigned rtn_reg = (insn & 0x03e00000) >> 21;
- if (rtn_reg == 31)
- milli = true;
-
- /* Dyncall is special because the user code has already
- put the return pointer in %r2 (aka RP). Other millicode
- calls have the return pointer in %r31. */
- if (strcmp (target_sym->name, "$$dyncall") == 0)
- dyncall = true;
-
- /* If we are creating a call from a stub to another stub, then
- never do the instruction reordering. We can tell if we are
- going to be calling one stub from another by the fact that
- the symbol name has '_stub_' (arg. reloc. stub) or '_lb_stub_'
- prepended to the name. Alternatively, the section of the
- symbol will be '.hppa_linker_stubs'. This is only an issue
- for long-calls; they are the only stubs allowed to call another
- stub. */
- if ((strncmp (target_sym->name, "_stub_", 6) == 0)
- || (strncmp (target_sym->name, "_lb_stub_", 9) == 0))
+ 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, or if this is a shared link and it is a call to a
+ weak symbol which may or may not be 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->maybe_pic_call
+ && !(input_section->flags & SEC_HAS_GOT_REF))
+ || (h->elf.root.type == bfd_link_hash_defweak
+ && h->elf.dynindx != -1
+ && h->elf.plt.offset != (bfd_vma) -1))))
{
- BFD_ASSERT (strcmp (target_sym->section->name, ".hppa_linker_stubs")
- == 0);
- rtn_adjust = false;
+ stub_entry = hppa_get_stub_entry (input_section, sym_sec,
+ h, rel, hplink);
+ 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. Calls to undefined weak
+ symbols behave as if the "called" function
+ immediately returns. We can thus call to a weak
+ function without first checking whether the function
+ is defined. */
+ value = location;
+ addend = 8;
+ }
+ 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;
- /* Create the stub section if necessary. */
- if (!stub_sec)
- {
- BFD_ASSERT (stub_desc == NULL);
- hppa_elf_create_stub_sec (abfd, output_bfd, &stub_sec, link_info);
- stub_desc = new_stub (abfd, stub_sec, link_info);
- }
+ 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. */
- /* Make the stub if we did not find one already. */
- if (!stub_desc)
- stub_desc = new_stub (abfd, stub_sec, link_info);
+ break;
+ }
+ /* Fall thru. */
- /* Allocate space to write the stub.
- FIXME: Why using realloc?!? */
- if (!stub_desc->stub_contents)
- {
- stub_desc->allocated_size = STUB_BUFFER_INCR;
- stub_desc->stub_contents = (char *) malloc (STUB_BUFFER_INCR);
- }
- else if ((stub_desc->allocated_size - stub_desc->real_size) < STUB_MAX_SIZE)
- {
- stub_desc->allocated_size = stub_desc->allocated_size + STUB_BUFFER_INCR;
- stub_desc->stub_contents = (char *) realloc (stub_desc->stub_contents,
- stub_desc->allocated_size);
- }
+ case R_PARISC_DLTIND21L:
+ case R_PARISC_DLTIND14R:
+ case R_PARISC_DLTIND14F:
+ value -= elf_gp (input_section->output_section->owner);
+ break;
- /* If no memory die. (I seriously doubt the other routines
- are prepared to get a NULL return value). */
- if (!stub_desc->stub_contents)
- {
- bfd_set_error (bfd_error_no_memory);
- abort ();
- }
+ case R_PARISC_SEGREL32:
+ if ((sym_sec->flags & SEC_CODE) != 0)
+ value -= hplink->text_segment_base;
+ else
+ value -= hplink->data_segment_base;
+ break;
- /* Generate an appropriate name for this stub. */
- if (linker_stub_type == HPPA_STUB_ARG_RELOC)
- sprintf (stub_sym_name,
- "_stub_%s_%02d_%02d_%02d_%02d_%02d_%s",
- reloc_entry->sym_ptr_ptr[0]->name,
- stub_types[0], stub_types[1], stub_types[2],
- stub_types[3], stub_types[4],
- rtn_adjust ? "RA" : "");
- else
- sprintf (stub_sym_name,
- "_lb_stub_%s_%s", reloc_entry->sym_ptr_ptr[0]->name,
- rtn_adjust ? "RA" : "");
-
-
- stub_desc->stub_secp
- = (int *) (stub_desc->stub_contents + stub_desc->real_size);
- stub_entry = find_stub_by_name (abfd, stub_sec, stub_sym_name);
-
- /* See if we already have one by this name. */
- if (stub_entry)
- {
- /* Yes, re-use it. Redirect the original relocation from the
- old symbol (a function symbol) to the stub (the stub will call
- the original function). */
- stub_sym = stub_entry->sym;
- reloc_entry->sym_ptr_ptr = &stub_sym;
- if (linker_stub_type == HPPA_STUB_LONG_CALL
- || (reloc_entry->howto->type != R_HPPA_PLABEL_32
- && (get_opcode(insn) == BLE
- || get_opcode (insn) == BE
- || get_opcode (insn) == BL)))
- reloc_entry->howto = bfd_reloc_type_lookup (abfd, R_HPPA_STUB_CALL_17);
+ default:
+ break;
}
- else
+
+ switch (r_type)
{
- /* Create a new symbol to point to this stub. */
- stub_sym = bfd_make_empty_symbol (abfd);
- if (!stub_sym)
+ case R_PARISC_DIR32:
+ case R_PARISC_DIR14F:
+ 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)
{
- bfd_set_error (bfd_error_no_memory);
- abort ();
+ max_branch_offset = (1 << (12-1)) << 2;
}
- stub_sym->name = bfd_zalloc (abfd, strlen (stub_sym_name) + 1);
- if (!stub_sym->name)
+ else
{
- bfd_set_error (bfd_error_no_memory);
- abort ();
+ max_branch_offset = (1 << (22-1)) << 2;
}
- strcpy ((char *) stub_sym->name, stub_sym_name);
- stub_sym->value
- = (char *) stub_desc->stub_secp - (char *) stub_desc->stub_contents;
- stub_sym->section = stub_sec;
- stub_sym->flags = BSF_LOCAL | BSF_FUNCTION;
- stub_entry = add_stub_by_name (abfd, stub_sec, stub_sym, link_info);
- /* Redirect the original relocation from the old symbol (a function)
- to the stub (the stub calls the function). */
- reloc_entry->sym_ptr_ptr = &stub_sym;
- if (linker_stub_type == HPPA_STUB_LONG_CALL
- || (reloc_entry->howto->type != R_HPPA_PLABEL_32
- && (get_opcode (insn) == BLE
- || get_opcode (insn) == BE
- || get_opcode (insn) == BL)))
- reloc_entry->howto = bfd_reloc_type_lookup (abfd, R_HPPA_STUB_CALL_17);
+ /* 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;
- /* Now generate the code for the stub. Starting with two
- common instructions.
+ /* 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, hplink);
+ 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;
- FIXME: Do we still need the SP adjustment?
- Do we still need to muck with space registers? */
- NEW_INSTRUCTION (stub_entry, LDSID_31_1)
- NEW_INSTRUCTION (stub_entry, MTSP_1_SR0)
+ /* Something we don't know how to handle. */
+ default:
+ return bfd_reloc_notsupported;
+ }
- if (linker_stub_type == HPPA_STUB_ARG_RELOC)
- {
- NEW_INSTRUCTION (stub_entry, ADDI_8_SP)
+ /* 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;
+ }
- /* Examine each argument, generating code to relocate it
- into a different register if necessary. */
- for (i = ARG0; i < ARG3; i++)
- {
- switch (stub_types[i])
- {
+ val = hppa_field_adjust (value, addend, r_field);
- case NO_ARG_RELOC:
- continue;
+ 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;
- case R_TO_FR:
- switch (i)
- {
- case ARG0:
- NEW_INSTRUCTION (stub_entry, STWS_ARG0_M8SP)
- NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG0)
- break;
- case ARG1:
- NEW_INSTRUCTION (stub_entry, STWS_ARG1_M8SP)
- NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG1)
- break;
- case ARG2:
- NEW_INSTRUCTION (stub_entry, STWS_ARG2_M8SP)
- NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG2)
- break;
- case ARG3:
- NEW_INSTRUCTION (stub_entry, STWS_ARG3_M8SP)
- NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG3)
- break;
- }
- continue;
-
- case R01_TO_FR:
- switch (i)
- {
- case ARG0:
- NEW_INSTRUCTION (stub_entry, STWS_ARG0_M4SP)
- NEW_INSTRUCTION (stub_entry, STWS_ARG1_M8SP)
- NEW_INSTRUCTION (stub_entry, FLDDS_M8SP_FARG1)
- break;
- default:
- abort ();
- break;
- }
- continue;
+ default:
+ break;
+ }
- case R23_TO_FR:
- switch (i)
- {
- case ARG2:
- NEW_INSTRUCTION (stub_entry, STWS_ARG2_M4SP)
- NEW_INSTRUCTION (stub_entry, STWS_ARG3_M8SP)
- NEW_INSTRUCTION (stub_entry, FLDDS_M8SP_FARG3)
- break;
- default:
- abort ();
- break;
- }
- continue;
+ insn = hppa_rebuild_insn (insn, val, r_format);
- case FR_TO_R:
- switch (i)
- {
- case ARG0:
- NEW_INSTRUCTION (stub_entry, FSTWS_FARG0_M8SP)
- NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG0)
- break;
- case ARG1:
- NEW_INSTRUCTION (stub_entry, FSTWS_FARG1_M8SP)
- NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG1)
- break;
- case ARG2:
- NEW_INSTRUCTION (stub_entry, FSTWS_FARG2_M8SP)
- NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG2)
- break;
- case ARG3:
- NEW_INSTRUCTION (stub_entry, FSTWS_FARG3_M8SP)
- NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG3)
- break;
- }
- continue;
-
- case FR_TO_R01:
- switch (i)
- {
- case ARG0:
- NEW_INSTRUCTION (stub_entry, FSTDS_FARG1_M8SP)
- NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG0)
- NEW_INSTRUCTION (stub_entry, LDWS_M8SP_ARG1)
- break;
- default:
- abort ();
- break;
- }
- continue;
-
- case FR_TO_R23:
- switch (i)
- {
- case ARG2:
- NEW_INSTRUCTION (stub_entry, FSTDS_FARG3_M8SP)
- NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG2)
- NEW_INSTRUCTION (stub_entry, LDWS_M8SP_ARG3)
- break;
- default:
- abort ();
- break;
- }
- continue;
+ /* Update the instruction word. */
+ bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data);
+ return bfd_reloc_ok;
+}
- default:
- abort ();
- break;
- }
- }
+/* Relocate an HPPA ELF section. */
- /* Put the stack pointer back. FIXME: Is this still necessary? */
- NEW_INSTRUCTION (stub_entry, ADDI_M8_SP_SP)
+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;
+
+ hplink = hppa_link_hash_table (info);
+ dynobj = hplink->root.dynobj;
+ local_got_offsets = elf_local_got_offsets (input_bfd);
+ 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 plabel;
+ bfd_vma off;
+
+ 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;
- /* Common code again. Return pointer adjustment and the like. */
- if (!dyncall)
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ if (info->relocateable)
{
- /* This isn't dyncall. */
- if (!milli)
- {
- /* It's not a millicode call, so get the correct return
- value into %r2 (aka RP). */
- if (rtn_adjust)
- NEW_INSTRUCTION (stub_entry, ADDI_M4_31_RP)
- else
- NEW_INSTRUCTION (stub_entry, COPY_31_2)
- }
- else
+ /* 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)
{
- /* It is a millicode call, so get the correct return
- value into %r1?!?. FIXME: Shouldn't this be
- %r31? Yes, and a little re-arrangement of the
- code below would make that possible. */
- if (rtn_adjust)
- NEW_INSTRUCTION (stub_entry, ADDI_M4_31_1)
- else
- NEW_INSTRUCTION (stub_entry, COPY_31_1)
+ 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;
}
- else
- {
- /* This is dyncall, so the code is a little different as the
- return pointer is already in %r2 (aka RP). */
- if (rtn_adjust)
- NEW_INSTRUCTION (stub_entry, ADDI_M4_31_RP)
- }
-
- /* Save the return address. */
- if (linker_stub_type == HPPA_STUB_ARG_RELOC)
- NEW_INSTRUCTION (stub_entry, STW_RP_M8SP)
-
- /* Long branch to the target function. */
- NEW_INSTRUCTION (stub_entry, LDIL_XXX_31)
- hppa_elf_stub_reloc (stub_entry->stub_desc,
- abfd, target_sym,
- CURRENT_STUB_OFFSET (stub_entry),
- R_HPPA_L21);
- NEW_INSTRUCTION (stub_entry, BLE_XXX_0_31)
- hppa_elf_stub_reloc (stub_entry->stub_desc,
- abfd, target_sym,
- CURRENT_STUB_OFFSET (stub_entry),
- R_HPPA_ABS_CALL_R17);
-
- if (linker_stub_type == HPPA_STUB_ARG_RELOC)
- {
- /* In delay slot of long-call, copy %r31 into %r2 so that
- the callee can return in the normal fashion. */
- NEW_INSTRUCTION (stub_entry, COPY_31_2)
-
- /* Restore the return address. */
- NEW_INSTRUCTION (stub_entry, LDW_M8SP_RP)
-
- /* Generate the code to move the return value around. */
- switch (stub_types[RETVAL])
- {
- case NO_ARG_RELOC:
- break;
-
- case R_TO_FR:
- NEW_INSTRUCTION (stub_entry, STWS_RET0_M8SP)
- NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FRET0)
- break;
-
- case FR_TO_R:
- NEW_INSTRUCTION (stub_entry, FSTWS_FRET0_M8SP)
- NEW_INSTRUCTION (stub_entry, LDWS_M4SP_RET0)
- break;
-
- default:
- abort ();
- break;
- }
- /* Return back to the main code stream. */
- NEW_INSTRUCTION (stub_entry, BV_N_0_RP)
- }
- else
+ /* This is a final link. */
+ h = NULL;
+ sym = NULL;
+ sym_sec = NULL;
+ if (r_symndx < symtab_hdr->sh_info)
{
- if (!dyncall)
- {
- /* Get return address into %r31. Both variants may be necessary
- (I think) as we could be cascading into another stub. */
- if (!milli)
- NEW_INSTRUCTION (stub_entry, COPY_2_31)
- else
- NEW_INSTRUCTION (stub_entry, COPY_1_31)
- }
- else
- {
- /* Get the return address into %r31 too. Might be necessary
- (I think) as we could be cascading into another stub. */
- NEW_INSTRUCTION (stub_entry, COPY_2_31)
- }
-
- /* No need for a return to the main stream. */
+ /* 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);
}
- }
- return stub_sym;
-}
-
-/* Return nonzero if an argument relocation will be needed to call
- the function (symbol in RELOC_ENTRY) assuming the caller has
- argument relocation bugs CALLER_AR. */
-
-static int
-hppa_elf_arg_reloc_needed_p (abfd, reloc_entry, stub_types, caller_ar)
- bfd *abfd;
- arelent *reloc_entry;
- arg_reloc_type stub_types[5];
- symext_entryS caller_ar;
-{
- /* If the symbol is still undefined, then it's impossible to know
- if an argument relocation is needed. */
- if (reloc_entry->sym_ptr_ptr[0]
- && reloc_entry->sym_ptr_ptr[0]->section != &bfd_und_section)
- {
- symext_entryS callee_ar = elf32_hppa_get_sym_extn (abfd,
- reloc_entry->sym_ptr_ptr[0],
- HPPA_SXT_ARG_RELOC);
-
- /* Now examine all the argument and return value location
- information to determine if a relocation stub will be needed. */
- if (caller_ar && callee_ar)
- {
- arg_location caller_loc[5];
- arg_location callee_loc[5];
-
- /* Extract the location information for the return value
- and argument registers separately. */
- callee_loc[RETVAL] = EXTRACT_ARBITS (callee_ar, RETVAL);
- caller_loc[RETVAL] = EXTRACT_ARBITS (caller_ar, RETVAL);
- callee_loc[ARG0] = EXTRACT_ARBITS (callee_ar, ARG0);
- caller_loc[ARG0] = EXTRACT_ARBITS (caller_ar, ARG0);
- callee_loc[ARG1] = EXTRACT_ARBITS (callee_ar, ARG1);
- caller_loc[ARG1] = EXTRACT_ARBITS (caller_ar, ARG1);
- callee_loc[ARG2] = EXTRACT_ARBITS (callee_ar, ARG2);
- caller_loc[ARG2] = EXTRACT_ARBITS (caller_ar, ARG2);
- callee_loc[ARG3] = EXTRACT_ARBITS (callee_ar, ARG3);
- caller_loc[ARG3] = EXTRACT_ARBITS (caller_ar, ARG3);
-
- /* Check some special combinations. For example, if FU
- appears in ARG1 or ARG3, we can move it to ARG0 or ARG2,
- respectively. (I guess this braindamage is correct? It'd
- take an hour or two of reading PA calling conventions to
- really know). */
-
- if (caller_loc[ARG0] == AR_FU || caller_loc[ARG1] == AR_FU)
+ 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)
{
- caller_loc[ARG0] = AR_DBL01;
- caller_loc[ARG1] = AR_NO;
+ 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);
}
- if (caller_loc[ARG2] == AR_FU || caller_loc[ARG3] == AR_FU)
+ 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
+ && h->elf.type != STT_PARISC_MILLI)
{
- caller_loc[ARG2] = AR_DBL23;
- caller_loc[ARG3] = AR_NO;
+ if (info->symbolic)
+ if (!((*info->callbacks->undefined_symbol)
+ (info, h->elf.root.root.string, input_bfd,
+ input_section, rel->r_offset, false)))
+ return false;
}
- if (callee_loc[ARG0] == AR_FU || callee_loc[ARG1] == AR_FU)
+ else
{
- callee_loc[ARG0] = AR_DBL01;
- callee_loc[ARG1] = AR_NO;
+ if (!((*info->callbacks->undefined_symbol)
+ (info, h->elf.root.root.string, input_bfd,
+ input_section, rel->r_offset, true)))
+ return false;
}
- if (callee_loc[ARG2] == AR_FU || callee_loc[ARG3] == AR_FU)
+ }
+
+ /* Do any required modifications to the relocation value, and
+ determine what types of dynamic info we need to output, if
+ any. */
+ plabel = 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)
{
- callee_loc[ARG2] = AR_DBL23;
- callee_loc[ARG3] = AR_NO;
+ boolean dyn;
+
+ off = h->elf.got.offset;
+ dyn = hplink->root.dynamic_sections_created;
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, &h->elf))
+ {
+ /* 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;
+ }
+ }
}
+ else
+ {
+ /* Local symbol case. */
+ if (local_got_offsets == NULL)
+ abort ();
- /* Now look up potential mismatches. */
- stub_types[ARG0] = type_of_mismatch (caller_loc[ARG0],
- callee_loc[ARG0],
- ARGUMENTS);
- stub_types[ARG1] = type_of_mismatch (caller_loc[ARG1],
- callee_loc[ARG1],
- ARGUMENTS);
- stub_types[ARG2] = type_of_mismatch (caller_loc[ARG2],
- callee_loc[ARG2],
- ARGUMENTS);
- stub_types[ARG3] = type_of_mismatch (caller_loc[ARG3],
- callee_loc[ARG3],
- ARGUMENTS);
- stub_types[RETVAL] = type_of_mismatch (caller_loc[RETVAL],
- callee_loc[RETVAL],
- RETURN_VALUE);
-
- /* If any of the arguments or return value need an argument
- relocation, then we will need an argument relocation stub. */
- if (stub_types[ARG0] != NO_ARG_RELOC
- || stub_types[ARG1] != NO_ARG_RELOC
- || stub_types[ARG2] != NO_ARG_RELOC
- || stub_types[ARG3] != NO_ARG_RELOC
- || stub_types[RETVAL] != NO_ARG_RELOC)
- return 1;
- }
- }
- return 0;
-}
+ 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);
-/* Create the linker stub section. */
+ if (info->shared)
+ {
+ /* Output a dynamic 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_DIR32);
+ outrel.r_addend = relocation;
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel,
+ ((Elf32_External_Rela *)
+ srelgot->contents
+ + srelgot->reloc_count));
+ ++srelgot->reloc_count;
+ }
-static void
-hppa_elf_create_stub_sec (abfd, output_bfd, secptr, link_info)
- bfd *abfd;
- bfd *output_bfd;
- asection **secptr;
- struct bfd_link_info *link_info;
-{
- asection *output_text_section;
-
- output_text_section = bfd_get_section_by_name (output_bfd, ".text");
- *secptr = bfd_make_section (abfd, ".hppa_linker_stubs");
- bfd_set_section_flags (abfd, *secptr,
- SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD
- | SEC_RELOC | SEC_CODE | SEC_READONLY);
- (*secptr)->output_section = output_text_section->output_section;
- (*secptr)->output_offset = 0;
-
- /* Set up the ELF section header for this new section. This
- is basically the same processing as elf_make_sections().
- elf_make_sections is static and therefore not accessable
- here. */
- {
- Elf_Internal_Shdr *this_hdr;
- this_hdr = &elf_section_data ((*secptr))->this_hdr;
-
- /* Set the sizes of this section. The contents have already
- been set up ?!? */
- this_hdr->sh_addr = (*secptr)->vma;
- this_hdr->sh_size = (*secptr)->_raw_size;
-
- /* Set appropriate flags for sections with relocations. */
- if ((*secptr)->flags & SEC_RELOC)
- {
- Elf_Internal_Shdr *rela_hdr;
- int use_rela_p = get_elf_backend_data (abfd)->use_rela_p;
-
- rela_hdr = &elf_section_data ((*secptr))->rel_hdr;
-
- if (use_rela_p)
- {
- rela_hdr->sh_type = SHT_RELA;
- rela_hdr->sh_entsize = sizeof (Elf32_External_Rela);
- }
- else
- {
- rela_hdr->sh_type = SHT_REL;
- rela_hdr->sh_entsize = sizeof (Elf32_External_Rel);
- }
- rela_hdr->sh_flags = 0;
- rela_hdr->sh_addr = 0;
- rela_hdr->sh_offset = 0;
- rela_hdr->sh_addralign = 0;
- rela_hdr->size = 0;
- }
-
- if ((*secptr)->flags & SEC_ALLOC)
- this_hdr->sh_flags |= SHF_ALLOC;
-
- if (!((*secptr)->flags & SEC_READONLY))
- this_hdr->sh_flags |= SHF_WRITE;
-
- if ((*secptr)->flags & SEC_CODE)
- this_hdr->sh_flags |= SHF_EXECINSTR;
- }
-
- bfd_set_section_alignment (abfd, *secptr, 2);
-}
+ local_got_offsets[r_symndx] |= 1;
+ }
+ }
-/* Return nonzero if a long-call stub will be needed to call the
- function (symbol in RELOC_ENTRY). */
+ if (off >= (bfd_vma) -2)
+ abort ();
-static int
-hppa_elf_long_branch_needed_p (abfd, asec, reloc_entry, symbol, insn)
- bfd *abfd;
- asection *asec;
- arelent *reloc_entry;
- asymbol *symbol;
- unsigned insn;
-{
- long sym_value = get_symbol_value (symbol);
- int fmt = reloc_entry->howto->bitsize;
- unsigned char op = get_opcode (insn);
- unsigned raddr;
-
-#define too_far(val,num_bits) \
- ((int)(val) > (1 << (num_bits)) - 1) || ((int)(val) < (-1 << (num_bits)))
-
- switch (op)
- {
- case BL:
- raddr =
- reloc_entry->address + asec->output_offset + asec->output_section->vma;
- /* If the symbol and raddr (relocated addr?) are too far away from
- each other, then a long-call stub will be needed. */
- if (too_far (sym_value - raddr, fmt + 1))
- return 1;
- break;
- }
- return 0;
-}
+ /* Add the base of the GOT to the relocation value. */
+ relocation = (off
+ + hplink->sgot->output_offset
+ + hplink->sgot->output_section->vma);
+ break;
+
+ case R_PARISC_SEGREL32:
+ /* If this is the first SEGREL relocation, then initialize
+ the segment base values. */
+ if (hplink->text_segment_base == (bfd_vma) -1)
+ bfd_map_over_sections (output_bfd,
+ hppa_record_segment_addr,
+ hplink);
+ break;
-/* Search the given section and determine if linker stubs will be
- needed for any calls within that section.
+ case R_PARISC_PLABEL14R:
+ case R_PARISC_PLABEL21L:
+ case R_PARISC_PLABEL32:
+ if (hplink->root.dynamic_sections_created)
+ {
+ /* If we have a global symbol with a PLT slot, then
+ redirect this relocation to it. */
+ if (h != NULL)
+ {
+ off = h->elf.plt.offset;
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, &h->elf))
+ {
+ /* In a non-shared link, adjust_dynamic_symbols
+ isn't called for symbols forced local. We
+ need to write out the plt entry here. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_32 (output_bfd,
+ relocation,
+ hplink->splt->contents + off);
+ bfd_put_32 (output_bfd,
+ elf_gp (hplink->splt->output_section->owner),
+ hplink->splt->contents + off + 4);
+ h->elf.plt.offset |= 1;
+ }
+ }
+ }
+ else
+ {
+ bfd_vma *local_plt_offsets;
- Return any new stub symbols created.
+ if (local_got_offsets == NULL)
+ abort ();
- Used out of hppaelf.em in the linker. */
-
-asymbol *
-hppa_look_for_stubs_in_section (stub_bfd, abfd, output_bfd, asec,
- syms, new_sym_cnt, link_info)
- bfd *stub_bfd;
- bfd *abfd;
- bfd *output_bfd;
- asection *asec;
- asymbol **syms;
- int *new_sym_cnt;
- struct bfd_link_info *link_info;
-{
- int i;
- arg_reloc_type stub_types[5];
- asymbol *new_syms = NULL;
- int new_cnt = 0;
- int new_max = 0;
+ local_plt_offsets = local_got_offsets + symtab_hdr->sh_info;
+ off = local_plt_offsets[r_symndx];
- /* Relocations are in different places depending on whether this is
- an output section or an input section. Also, the relocations are
- in different forms. Sigh. Luckily, we have bfd_canonicalize_reloc()
- to straighten this out for us . */
- if (asec->reloc_count > 0)
- {
- arelent **reloc_vector
- = (arelent **) alloca (asec->reloc_count * (sizeof (arelent *) + 1));
+ /* As for the local .got entry case, we use the last
+ bit to record whether we've already initialised
+ this local .plt entry. */
+ if ((off & 1) != 0)
+ off &= ~1;
+ else
+ {
+ bfd_put_32 (output_bfd,
+ relocation,
+ hplink->splt->contents + off);
+ bfd_put_32 (output_bfd,
+ elf_gp (hplink->splt->output_section->owner),
+ hplink->splt->contents + off + 4);
+
+ if (info->shared)
+ {
+ /* Output a dynamic IPLT relocation for this
+ PLT entry. */
+ Elf_Internal_Rela outrel;
+ asection *srelplt = hplink->srelplt;
+
+ outrel.r_offset = (off
+ + hplink->splt->output_offset
+ + hplink->splt->output_section->vma);
+ outrel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
+ outrel.r_addend = relocation;
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel,
+ ((Elf32_External_Rela *)
+ srelplt->contents
+ + srelplt->reloc_count));
+ ++srelplt->reloc_count;
+ }
- bfd_canonicalize_reloc (abfd, asec, reloc_vector, syms);
+ local_plt_offsets[r_symndx] |= 1;
+ }
+ }
- /* Examine each relocation entry in this section. */
- for (i = 0; i < asec->reloc_count; i++)
- {
- arelent *rle = reloc_vector[i];
+ if (off >= (bfd_vma) -2)
+ abort ();
- switch (rle->howto->type)
+ /* 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.
+ Exception: Undefined PLABELs should have a value of
+ zero. */
+ if (h == NULL
+ || (h->elf.root.type != bfd_link_hash_undefweak
+ && h->elf.root.type != bfd_link_hash_undefined))
+ {
+ relocation = (off
+ + hplink->splt->output_offset
+ + hplink->splt->output_section->vma
+ + 2);
+ }
+ plabel = 1;
+ }
+ /* Fall through and possibly emit a dynamic relocation. */
+
+ case R_PARISC_DIR17F:
+ case R_PARISC_DIR17R:
+ case R_PARISC_DIR14F:
+ 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
+ ..discard_relocs. 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
+ ..discard_relocs. If you squint, the non-shared test
+ here does indeed match the one in ..check_relocs, the
+ difference being that here we test DEF_DYNAMIC as well as
+ !DEF_REGULAR. All common syms end up with !DEF_REGULAR,
+ which is why we can't use just that test here.
+ Conversely, DEF_DYNAMIC can't be used in check_relocs as
+ there all files have not been loaded. */
+ if ((info->shared
+ && (input_section->flags & SEC_ALLOC) != 0
+ && (IS_ABSOLUTE_RELOC (r_type)
+ || (h != NULL
+ && h->elf.dynindx != -1
+ && (!info->symbolic
+ || (h->elf.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))))
+ || (!info->shared
+ && (input_section->flags & SEC_ALLOC) != 0
+ && h != NULL
+ && h->elf.dynindx != -1
+ && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0
+ && (((h->elf.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_DYNAMIC) != 0
+ && (h->elf.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ || h->elf.root.type == bfd_link_hash_undefweak
+ || h->elf.root.type == bfd_link_hash_undefined)))
{
- /* Any call could need argument relocation stubs, and
- some may need long-call stubs. */
- case R_HPPA_ABS_CALL_11:
- case R_HPPA_ABS_CALL_14:
- case R_HPPA_ABS_CALL_17:
- case R_HPPA_ABS_CALL_L21:
- case R_HPPA_ABS_CALL_R11:
- case R_HPPA_ABS_CALL_R14:
- case R_HPPA_ABS_CALL_R17:
- case R_HPPA_ABS_CALL_LS21:
- case R_HPPA_ABS_CALL_RS11:
- case R_HPPA_ABS_CALL_RS14:
- case R_HPPA_ABS_CALL_RS17:
- case R_HPPA_ABS_CALL_LD21:
- case R_HPPA_ABS_CALL_RD11:
- case R_HPPA_ABS_CALL_RD14:
- case R_HPPA_ABS_CALL_RD17:
- case R_HPPA_ABS_CALL_LR21:
- case R_HPPA_ABS_CALL_RR14:
- case R_HPPA_ABS_CALL_RR17:
- case R_HPPA_PCREL_CALL_11:
- case R_HPPA_PCREL_CALL_14:
- case R_HPPA_PCREL_CALL_17:
- case R_HPPA_PCREL_CALL_12:
- case R_HPPA_PCREL_CALL_L21:
- case R_HPPA_PCREL_CALL_R11:
- case R_HPPA_PCREL_CALL_R14:
- case R_HPPA_PCREL_CALL_R17:
- case R_HPPA_PCREL_CALL_LS21:
- case R_HPPA_PCREL_CALL_RS11:
- case R_HPPA_PCREL_CALL_RS14:
- case R_HPPA_PCREL_CALL_RS17:
- case R_HPPA_PCREL_CALL_LD21:
- case R_HPPA_PCREL_CALL_RD11:
- case R_HPPA_PCREL_CALL_RD14:
- case R_HPPA_PCREL_CALL_RD17:
- case R_HPPA_PCREL_CALL_LR21:
- case R_HPPA_PCREL_CALL_RR14:
- case R_HPPA_PCREL_CALL_RR17:
- {
- symext_entryS caller_ar
- = (symext_entryS) HPPA_R_ARG_RELOC (rle->addend);
- unsigned insn[2];
-
- /* We'll need this for the long-call checks. */
- bfd_get_section_contents (abfd, asec, insn, rle->address,
- sizeof(insn));
-
- /* See if this call needs an argument relocation stub. */
- if (hppa_elf_arg_reloc_needed_p (abfd, rle, stub_types,
- caller_ar))
- {
- /* Generate a stub and keep track of the new symbol. */
- asymbol *r;
-
- if (new_cnt == new_max)
- {
- new_max += STUB_SYM_BUFFER_INC;
- new_syms = (asymbol *)
- realloc (new_syms, new_max * sizeof (asymbol));
- if (new_syms == NULL)
- abort ();
- }
-
- /* Build the argument relocation stub. */
- r = hppa_elf_build_linker_stub (stub_bfd, output_bfd,
- link_info, rle,
- stub_types, true, insn,
- HPPA_STUB_ARG_RELOC);
- new_syms[new_cnt++] = *r;
- }
-
- /* See if this call needs a long-call stub. */
- if (hppa_elf_long_branch_needed_p (abfd, asec, rle,
- rle->sym_ptr_ptr[0],
- insn[0]))
- {
- /* Generate a stub and keep track of the new symbol. */
- asymbol *r;
-
- if (new_cnt == new_max)
- {
- new_max += STUB_SYM_BUFFER_INC;
- new_syms = (asymbol *)
- realloc (new_syms, (new_max * sizeof (asymbol)));
- if (! new_syms)
- abort ();
- }
-
- /* Build the long-call stub. */
- r = hppa_elf_build_linker_stub (stub_bfd, output_bfd,
- link_info, rle,
- NULL, true, insn,
- HPPA_STUB_LONG_CALL);
- new_syms[new_cnt++] = *r;
- }
- }
- break;
+ Elf_Internal_Rela outrel;
+ boolean skip;
- /* PLABELs may need argument relocation stubs. */
- case R_HPPA_PLABEL_32:
- case R_HPPA_PLABEL_11:
- case R_HPPA_PLABEL_14:
- case R_HPPA_PLABEL_L21:
- case R_HPPA_PLABEL_R11:
- case R_HPPA_PLABEL_R14:
- {
- /* On a plabel relocation, assume the arguments of the
- caller are set up in general registers (indirect
- calls only use general registers.
- NOTE: 0x155 = ARGW0=GR,ARGW1=GR,ARGW2=GR,RETVAL=GR. */
- symext_entryS caller_ar = (symext_entryS) 0x155;
- unsigned insn[2];
-
- /* Do we really need this? */
- bfd_get_section_contents (abfd, asec, insn, rle->address,
- sizeof(insn));
-
- /* See if this call needs an argument relocation stub. */
- if (hppa_elf_arg_reloc_needed_p (abfd, rle, stub_types,
- caller_ar))
- {
- /* Generate a plabel stub and keep track of the
- new symbol. */
- asymbol *r;
- int rtn_adjust;
-
- if (new_cnt == new_max)
- {
- new_max += STUB_SYM_BUFFER_INC;
- new_syms = (asymbol *) realloc (new_syms, new_max
- * sizeof (asymbol));
- }
-
- /* Determine whether a return adjustment
- (see the relocation code for relocation type
- R_HPPA_STUB_CALL_17) is possible. Basically,
- determine whether we are looking at a branch or not. */
- if (rle->howto->type == R_HPPA_PLABEL_32)
- rtn_adjust = false;
- else
- {
- switch (get_opcode(insn[0]))
- {
- case BLE:
- case BE:
- rtn_adjust = true;
- break;
- default:
- rtn_adjust = false;
- }
- }
-
- /* Build the argument relocation stub. */
- r = hppa_elf_build_linker_stub (stub_bfd, output_bfd,
- link_info, rle, stub_types,
- rtn_adjust, insn,
- HPPA_STUB_ARG_RELOC);
- new_syms[new_cnt++] = *r;
- }
- }
- break;
+ /* When generating a shared object, these relocations
+ are copied into the output file to be resolved at run
+ time. */
- default:
- break;
+ if (sreloc == NULL)
+ {
+ 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);
+ if (sreloc == NULL)
+ abort ();
+ }
+
+ outrel.r_offset = rel->r_offset;
+ outrel.r_addend = rel->r_addend;
+ skip = false;
+ if (elf_section_data (input_section)->stab_info != NULL)
+ {
+ off = (_bfd_stab_section_offset
+ (output_bfd, &hplink->root.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;
+ }
+
+ outrel.r_offset += (input_section->output_offset
+ + input_section->output_section->vma);
+
+ if (skip)
+ {
+ memset (&outrel, 0, sizeof (outrel));
+ }
+ else if (h != NULL
+ && h->elf.dynindx != -1
+ && (plabel
+ || !IS_ABSOLUTE_RELOC (r_type)
+ || !info->shared
+ || !info->symbolic
+ || (h->elf.elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))
+ {
+ 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;
+
+ /* Add the absolute offset of the symbol. */
+ outrel.r_addend += relocation;
+
+ /* Global plabels need to be processed by the
+ dynamic linker so that functions have at most one
+ fptr. For this reason, we need to differentiate
+ between global and local plabels, which we do by
+ providing the function symbol for a global plabel
+ reloc, and no symbol for local plabels. */
+ if (! plabel
+ && sym_sec != NULL
+ && sym_sec->output_section != NULL
+ && ! bfd_is_abs_section (sym_sec))
+ {
+ 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;
+ }
+
+ outrel.r_info = ELF32_R_INFO (indx, r_type);
+ }
+#if 0
+ /* EH info can cause unaligned DIR32 relocs.
+ Tweak the reloc type for the dynamic linker. */
+ if (r_type == R_PARISC_DIR32 && (outrel.r_offset & 3) != 0)
+ outrel.r_info = ELF32_R_INFO (ELF32_R_SYM (outrel.r_info),
+ R_PARISC_DIR32U);
+#endif
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel,
+ ((Elf32_External_Rela *)
+ sreloc->contents
+ + sreloc->reloc_count));
+ ++sreloc->reloc_count;
}
+ break;
+
+ default:
+ break;
}
- }
- /* Return the new symbols and update the counters. */
- *new_sym_cnt = new_cnt;
- return new_syms;
-}
+ r = final_link_relocate (input_section, contents, rel, relocation,
+ hplink, sym_sec, h);
-/* Set the contents of a particular section at a particular location. */
+ if (r == bfd_reloc_ok)
+ continue;
-static boolean
-hppa_elf_set_section_contents (abfd, section, location, offset, count)
- bfd *abfd;
- sec_ptr section;
- PTR location;
- file_ptr offset;
- bfd_size_type count;
-{
- /* Linker stubs are handled a little differently. */
- if (! strcmp (section->name, ".hppa_linker_stubs"))
- {
- if (linker_stubs_max_size < offset + count)
+ if (h != NULL)
+ sym_name = h->elf.root.root.string;
+ else
{
- linker_stubs_max_size = offset + count + STUB_ALLOC_INCR;
- linker_stubs = (char *)realloc (linker_stubs, linker_stubs_max_size);
- if (! linker_stubs)
- abort ();
+ 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 (offset + count > linker_stubs_size)
- linker_stubs_size = offset + count;
-
- /* Set the contents. */
- memcpy(linker_stubs + offset, location, count);
- return (true);
- }
- else
- /* For everything but the linker stub section, use the generic
- code. */
- return bfd_elf32_set_section_contents (abfd, section, location,
- offset, count);
-}
-
-/* Get the contents of the given section.
-
- This is special for PA ELF because some sections (such as linker stubs)
- may reside in memory rather than on disk, or in the case of the symbol
- extension section, the contents may need to be generated from other
- information contained in the BFD. */
+ howto = elf_hppa_howto_table + r_type;
-boolean
-hppa_elf_get_section_contents (abfd, section, location, offset, count)
- bfd *abfd;
- sec_ptr section;
- PTR location;
- file_ptr offset;
- bfd_size_type count;
-{
- /* If this is the linker stub section, then its contents are contained
- in memory rather than on disk. FIXME. Is that always right? What
- about the case where a final executable is read in and a user tries
- to get the contents of this section? In that case the contents would
- be on disk like everything else. */
- if (strcmp (section->name, ".hppa_linker_stubs") == 0)
- {
- elf32_hppa_stub_description *stub_desc = find_stubs (abfd, section);
-
- if (count == 0)
- return true;
-
- /* Sanity check our arguments. */
- if ((bfd_size_type) (offset + count) > section->_raw_size
- || (bfd_size_type) (offset + count) > stub_desc->real_size)
- return (false);
-
- memcpy (location, stub_desc->stub_contents + offset, count);
- return (true);
- }
-
- /* The symbol extension section also needs special handling. Its
- contents might be on the disk, in memory, or still need to
- be generated. */
- else if (strcmp (section->name, ".hppa_symextn") == 0)
- {
- /* If there are no output sections, then read the contents of the
- symbol extension section from disk. */
- if (section->output_section == NULL
- && abfd->direction == read_direction)
- {
- return bfd_generic_get_section_contents (abfd, section, location,
- offset, count);
- }
-
- /* If this is the first time through, and there are output sections,
- then build the symbol extension section based on other information
- contained in the BFD. */
- else if (! symext_chain_built)
- {
- int i;
- int *symtab_map =
- (int *) elf_sym_extra (section->output_section->owner);
-
- for (i = 0; i < section->output_section->owner->symcount; i++)
- {
- elf_hppa_tc_symbol (section->output_section->owner,
- ((elf_symbol_type *)
- section->output_section->owner->outsymbols[i]),
- symtab_map[i], &symext_rootP, &symext_lastP);
- }
- symext_chain_built++;
- elf_hppa_tc_make_sections (section->output_section->owner,
- symext_rootP);
+ 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;
}
-
- /* At this point we know that the symbol extension section has been
- built. We just need to copy it into the user's buffer. */
- if (count == 0)
- return true;
-
- /* Sanity check our arguments. */
- if ((bfd_size_type) (offset + count) > section->_raw_size
- || (bfd_size_type) (offset + count) > symextn_contents_real_size)
- return (false);
-
- memcpy (location,
- (char *)symextn_contents + section->output_offset + offset,
- count);
- return (true);
}
- else
- /* It's not the symbol extension or linker stub sections, use
- the generic routines. */
- return bfd_generic_get_section_contents (abfd, section, location,
- offset, count);
-}
-/* Translate from an elf into field into a howto relocation pointer. */
-
-static void
-elf_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd;
- arelent *cache_ptr;
- Elf32_Internal_Rela *dst;
-{
- BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_HPPA_UNIMPLEMENTED);
- cache_ptr->howto = &elf_hppa_howto_table[ELF32_R_TYPE (dst->r_info)];
+ return true;
}
-/* Do PA ELF specific processing for symbols. Needed to find the
- value of $global$. */
+/* Comparison function for qsort to sort unwind section during a
+ final link. */
-static void
-elf32_hppa_backend_symbol_processing (abfd, sym)
- bfd *abfd;
- asymbol *sym;
+static int
+hppa_unwind_entry_compare (a, b)
+ const PTR a;
+ const PTR b;
{
- /* Is this a definition of $global$? If so, keep it because it will be
- needed if any relocations are performed. */
- if (!strcmp (sym->name, "$global$")
- && sym->section != &bfd_und_section)
- {
- global_symbol = sym;
- }
+ const bfd_byte *ap, *bp;
+ unsigned long av, bv;
+
+ ap = (const bfd_byte *) a;
+ av = (unsigned long) ap[0] << 24;
+ av |= (unsigned long) ap[1] << 16;
+ av |= (unsigned long) ap[2] << 8;
+ av |= (unsigned long) ap[3];
+
+ bp = (const bfd_byte *) b;
+ bv = (unsigned long) bp[0] << 24;
+ bv |= (unsigned long) bp[1] << 16;
+ bv |= (unsigned long) bp[2] << 8;
+ bv |= (unsigned long) bp[3];
+
+ return av < bv ? -1 : av > bv ? 1 : 0;
}
-/* Do some PA ELF specific work after reading in the symbol table.
- In particular attach the argument relocation from the
- symbol extension section to the appropriate symbols. */
+/* Finish up dynamic symbol handling. We set the contents of various
+ dynamic sections here. */
+
static boolean
-elf32_hppa_backend_symbol_table_processing (abfd, esyms,symcnt)
- bfd *abfd;
- elf_symbol_type *esyms;
- int symcnt;
+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;
{
- Elf32_Internal_Shdr *symextn_hdr =
- bfd_elf_find_section (abfd, SYMEXTN_SECTION_NAME);
- int i, current_sym_idx = 0;
+ struct elf32_hppa_link_hash_table *hplink;
+ bfd *dynobj;
- /* If no symbol extension existed, then all symbol extension information
- is assumed to be zero. */
- if (symextn_hdr == NULL)
- {
- for (i = 0; i < symcnt; i++)
- esyms[i].tc_data.hppa_arg_reloc = 0;
- return (true);
- }
+ hplink = hppa_link_hash_table (info);
+ dynobj = hplink->root.dynobj;
- /* Allocate a buffer of the appropriate size for the symextn section. */
- symextn_hdr->contents = bfd_zalloc(abfd,symextn_hdr->sh_size);
- if (!symextn_hdr->contents)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
- symextn_hdr->size = symextn_hdr->sh_size;
-
- /* Read in the symextn section. */
- if (bfd_seek (abfd, symextn_hdr->sh_offset, SEEK_SET) == -1)
- {
- bfd_set_error (bfd_error_system_call);
- return (false);
- }
- if (bfd_read ((PTR) symextn_hdr->contents, 1, symextn_hdr->size, abfd)
- != symextn_hdr->size)
+ if (h->plt.offset != (bfd_vma) -1)
{
- bfd_set_error (bfd_error_system_call);
- return (false);
- }
+ bfd_vma value;
- /* Parse entries in the symbol extension section, updating the symtab
- entries as we go */
- for (i = 0; i < symextn_hdr->size / sizeof(symext_entryS); i++)
- {
- symext_entryS *seP = ((symext_entryS *)symextn_hdr->contents) + i;
- int se_value = ELF32_HPPA_SX_VAL (*seP);
- int se_type = ELF32_HPPA_SX_TYPE (*seP);
+ if (h->plt.offset & 1)
+ abort ();
- switch (se_type)
+ /* This symbol has an entry in the procedure linkage table. Set
+ it up.
+
+ The format of a plt entry is
+ <funcaddr>
+ <__gp>
+ */
+ value = 0;
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
{
- case HPPA_SXT_NULL:
- break;
+ 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);
+ }
- case HPPA_SXT_SYMNDX:
- if (se_value >= symcnt)
+ if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call)
+ {
+ Elf_Internal_Rela rel;
+
+ /* Create a dynamic IPLT relocation for this entry. */
+ rel.r_offset = (h->plt.offset
+ + hplink->splt->output_offset
+ + hplink->splt->output_section->vma);
+ if (! ((struct elf32_hppa_link_hash_entry *) h)->plt_abs
+ && h->dynindx != -1)
{
- bfd_set_error (bfd_error_bad_value);
- return (false);
+ /* To support lazy linking, the function pointer is
+ initialised to point to a special stub stored at the
+ end of the .plt. This is not done for plt entries
+ with a base-relative dynamic relocation. */
+ value = (hplink->splt->output_offset
+ + hplink->splt->output_section->vma
+ + hplink->splt->_raw_size
+ - sizeof (plt_stub)
+ + PLT_STUB_ENTRY);
+ rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT);
+ rel.r_addend = 0;
+ }
+ else
+ {
+ /* This symbol has been marked to become local, and is
+ used by a plabel so must be kept in the .plt. */
+ rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT);
+ rel.r_addend = value;
}
- current_sym_idx = se_value - 1;
- break;
-
- case HPPA_SXT_ARG_RELOC:
- esyms[current_sym_idx].tc_data.hppa_arg_reloc = se_value;
- break;
- default:
- bfd_set_error (bfd_error_bad_value);
- return (false);
+ 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++;
}
- }
- return (true);
-}
-/* Perform on PA ELF specific processing once a section has been
- read in. In particular keep the symbol indexes correct for
- the symbol extension information. */
+ bfd_put_32 (hplink->splt->owner,
+ value,
+ hplink->splt->contents + h->plt.offset);
+ bfd_put_32 (hplink->splt->owner,
+ elf_gp (hplink->splt->output_section->owner),
+ hplink->splt->contents + h->plt.offset + 4);
+ if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE
+ && ((struct elf32_hppa_link_hash_entry *) h)->plabel
+ && h->dynindx != -1)
+ {
+ memset (hplink->splt->contents + h->plt.offset + 8,
+ 0, PLABEL_PLT_ENTRY_SIZE - PLT_ENTRY_SIZE);
+ }
-static boolean
-elf32_hppa_backend_section_processing (abfd, secthdr)
- bfd *abfd;
- Elf32_Internal_Shdr *secthdr;
-{
- int i, j, k;
+ 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;
+ }
+ }
- if (secthdr->sh_type == SHT_HPPA_SYMEXTN)
+ if (h->got.offset != (bfd_vma) -1)
{
- for (i = 0; i < secthdr->size / sizeof (symext_entryS); i++)
+ 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 -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 (info->shared
+ && (info->symbolic || h->dynindx == -1)
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
{
- symext_entryS *seP = ((symext_entryS *)secthdr->contents) + i;
- int se_value = ELF32_HPPA_SX_VAL (*seP);
- int se_type = ELF32_HPPA_SX_TYPE (*seP);
-
- switch (se_type)
- {
- case HPPA_SXT_NULL:
- break;
-
- case HPPA_SXT_SYMNDX:
- for (j = 0; j < abfd->symcount; j++)
- {
- /* Locate the map entry for this symbol and modify the
- symbol extension section symbol index entry to reflect
- the new symbol table index. */
- for (k = 0; k < elf32_hppa_symextn_map_size; k++)
- {
- if (elf32_hppa_symextn_map[k].old_index == se_value
- && elf32_hppa_symextn_map[k].bfd
- == abfd->outsymbols[j]->the_bfd
- && elf32_hppa_symextn_map[k].sym
- == abfd->outsymbols[j])
- {
- bfd_put_32(abfd,
- ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX, j),
- (char *)seP);
- }
- }
- }
- break;
-
- case HPPA_SXT_ARG_RELOC:
- break;
-
- default:
- bfd_set_error (bfd_error_bad_value);
- return (false);
- }
+ rel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32);
+ rel.r_addend = (h->root.u.def.value
+ + h->root.u.def.section->output_offset
+ + h->root.u.def.section->output_section->vma);
+ }
+ else
+ {
+ if ((h->got.offset & 1) != 0)
+ abort ();
+ 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_elf32_swap_reloca_out (output_bfd, &rel,
+ ((Elf32_External_Rela *)
+ hplink->srelgot->contents
+ + hplink->srelgot->reloc_count));
+ ++hplink->srelgot->reloc_count;
+ }
+
+ 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. */
+
+ if (! (h->dynindx != -1
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)))
+ abort ();
+
+ 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;
}
-/* What does this really do? Just determine if there is an appropriate
- mapping from ELF section headers to backend sections? More symbol
- extension braindamage. */
+/* Finish up the dynamic sections. */
static boolean
-elf32_hppa_backend_section_from_shdr (abfd, hdr, name)
- bfd *abfd;
- Elf32_Internal_Shdr *hdr;
- char *name;
+elf32_hppa_finish_dynamic_sections (output_bfd, info)
+ bfd *output_bfd;
+ struct bfd_link_info *info;
{
- asection *newsect;
+ bfd *dynobj;
+ struct elf32_hppa_link_hash_table *hplink;
+ asection *sdyn;
- if (hdr->sh_type == SHT_HPPA_SYMEXTN)
+ hplink = hppa_link_hash_table (info);
+ dynobj = hplink->root.dynobj;
+
+ sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
+
+ if (hplink->root.dynamic_sections_created)
{
- BFD_ASSERT (strcmp (name, ".hppa_symextn") == 0);
+ Elf32_External_Dyn *dyncon, *dynconend;
+
+ if (sdyn == NULL)
+ abort ();
- /* Bits that get saved. This one is real. */
- if (!hdr->rawdata)
+ dyncon = (Elf32_External_Dyn *) sdyn->contents;
+ dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size);
+ for (; dyncon < dynconend; dyncon++)
{
- newsect = bfd_make_section (abfd, name);
- if (newsect != NULL)
+ Elf_Internal_Dyn dyn;
+ asection *s;
+
+ bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
+
+ switch (dyn.d_tag)
{
- newsect->vma = hdr->sh_addr;
- newsect->_raw_size = hdr->sh_size;
- newsect->filepos = hdr->sh_offset;
- newsect->flags |= SEC_HAS_CONTENTS;
- newsect->alignment_power = hdr->sh_addralign;
+ default:
+ break;
- if (hdr->sh_flags & SHF_ALLOC)
- {
- newsect->flags |= SEC_ALLOC;
- newsect->flags |= SEC_LOAD;
- }
+ 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;
- if (!(hdr->sh_flags & SHF_WRITE))
- newsect->flags |= SEC_READONLY;
+ 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;
- if (hdr->sh_flags & SHF_EXECINSTR)
- newsect->flags |= SEC_CODE;
+ case DT_PLTRELSZ:
+ s = hplink->srelplt;
+ if (s->_cooked_size != 0)
+ dyn.d_un.d_val = s->_cooked_size;
else
- newsect->flags |= SEC_DATA;
-
- hdr->rawdata = (void *) newsect;
+ dyn.d_un.d_val = s->_raw_size;
+ bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
+ break;
}
}
- return true;
}
- return false;
-}
-/* Return true if the given section is a fake section. */
-
-static boolean
-elf32_hppa_backend_fake_sections (abfd, secthdr, asect)
- bfd *abfd;
- Elf_Internal_Shdr *secthdr;
- asection *asect;
-{
-
- if (strcmp(asect->name, ".hppa_symextn") == 0)
+ if (hplink->sgot != NULL && hplink->sgot->_raw_size != 0)
{
- secthdr->sh_type = SHT_HPPA_SYMEXTN;
- secthdr->sh_flags = 0;
- secthdr->sh_info = elf_section_data(asect)->rel_hdr.sh_link;
- secthdr->sh_link = elf_onesymtab(abfd);
- return true;
+ /* Fill in the first entry in the global offset table.
+ We use it to point to our dynamic section, if we have one. */
+ bfd_put_32 (output_bfd,
+ (sdyn != NULL
+ ? sdyn->output_section->vma + sdyn->output_offset
+ : (bfd_vma) 0),
+ hplink->sgot->contents);
+
+ /* The second entry is reserved for use by the dynamic linker. */
+ memset (hplink->sgot->contents + GOT_ENTRY_SIZE, 0, GOT_ENTRY_SIZE);
+
+ /* Set .got entry size. */
+ elf_section_data (hplink->sgot->output_section)
+ ->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
}
- if (!strcmp (asect->name, ".hppa_unwind"))
+ if (hplink->splt != NULL && hplink->splt->_raw_size != 0)
{
- secthdr->sh_type = SHT_PROGBITS;
- /* Unwind descriptors are not part of the program memory image. */
- secthdr->sh_flags = 0;
- secthdr->sh_info = 0;
- secthdr->sh_link = 0;
- secthdr->sh_entsize = 16;
- return true;
- }
+ /* Set plt entry size. */
+ elf_section_data (hplink->splt->output_section)
+ ->this_hdr.sh_entsize = PLT_ENTRY_SIZE;
- /* @@ Should this be CPU specific?? KR */
- if (!strcmp (asect->name, ".stabstr"))
- {
- secthdr->sh_type = SHT_STRTAB;
- secthdr->sh_flags = 0;
- secthdr->sh_info = 0;
- secthdr->sh_link = 0;
- secthdr->sh_entsize = 0;
- return true;
+ if (hplink->need_plt_stub)
+ {
+ /* Set up the .plt stub. */
+ memcpy (hplink->splt->contents
+ + hplink->splt->_raw_size - sizeof (plt_stub),
+ plt_stub, sizeof (plt_stub));
+
+ if ((hplink->splt->output_offset
+ + hplink->splt->output_section->vma
+ + hplink->splt->_raw_size)
+ != (hplink->sgot->output_offset
+ + hplink->sgot->output_section->vma))
+ {
+ (*_bfd_error_handler)
+ (_(".got section not immediately after .plt section"));
+ return false;
+ }
+ }
}
- return false;
+ return true;
}
-/* Return true if there is a mapping from bfd section into a
- backend section. */
+/* Tweak the OSABI field of the elf header. */
-static boolean
-elf32_hppa_backend_section_from_bfd_section (abfd, hdr, asect, ignored)
+static void
+elf32_hppa_post_process_headers (abfd, link_info)
bfd *abfd;
- Elf32_Internal_Shdr *hdr;
- asection *asect;
- int *ignored;
+ struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
{
- if (hdr->sh_type == SHT_HPPA_SYMEXTN)
+ Elf_Internal_Ehdr * i_ehdrp;
+
+ i_ehdrp = elf_elfheader (abfd);
+
+ if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0)
{
- if (hdr->rawdata)
- {
- if (((struct sec *) (hdr->rawdata)) == asect)
- {
- BFD_ASSERT (strcmp (asect->name, ".hppa_symextn") == 0);
- return true;
- }
- }
+ i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX;
}
- else if (hdr->sh_type == SHT_STRTAB)
+ else
{
- if (hdr->rawdata)
- {
- if (((struct sec *) (hdr->rawdata)) == asect)
- {
- BFD_ASSERT (strcmp (asect->name, ".stabstr") == 0);
- return true;
- }
- }
+ i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX;
}
-
- return false;
}
-#define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup
-#define elf_backend_section_from_bfd_section elf32_hppa_backend_section_from_bfd_section
-
-#define elf_backend_symbol_processing elf32_hppa_backend_symbol_processing
-#define elf_backend_symbol_table_processing elf32_hppa_backend_symbol_table_processing
-
-#define bfd_generic_get_section_contents hppa_elf_get_section_contents
-#define bfd_elf32_set_section_contents hppa_elf_set_section_contents
-
-#define elf_backend_section_processing elf32_hppa_backend_section_processing
+/* 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;
+}
-#define elf_backend_section_from_shdr elf32_hppa_backend_section_from_shdr
-#define elf_backend_fake_sections elf32_hppa_backend_fake_sections
+/* Misc BFD support code. */
+#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 bfd_elf32_bfd_final_link elf32_hppa_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_hide_symbol elf32_hppa_hide_symbol
+#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_post_process_headers elf32_hppa_post_process_headers
+#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 8
#define TARGET_BIG_SYM bfd_elf32_hppa_vec
#define TARGET_BIG_NAME "elf32-hppa"
#define ELF_ARCH bfd_arch_hppa
-#define ELF_MACHINE_CODE EM_HPPA
+#define ELF_MACHINE_CODE EM_PARISC
#define ELF_MAXPAGESIZE 0x1000
#include "elf32-target.h"
+
+#undef TARGET_BIG_SYM
+#define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec
+#undef TARGET_BIG_NAME
+#define TARGET_BIG_NAME "elf32-hppa-linux"
+
+#define INCLUDED_TARGET_FILE 1
+#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff