X-Git-Url: http://drtracing.org/?a=blobdiff_plain;f=bfd%2Felf32-hppa.c;h=3d0c9eec9ce3e7b4b26ecca1f13e368f05255a06;hb=6fa957a9b9408297206fb88e7c773931760f0528;hp=dfabbad00824b165569043b1dfd034598a58b86c;hpb=43cbcf28590f2883478602d7cd7be26341ead69f;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-hppa.c b/bfd/elf32-hppa.c index dfabbad008..3d0c9eec9c 100644 --- a/bfd/elf32-hppa.c +++ b/bfd/elf32-hppa.c @@ -2,11 +2,11 @@ Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 97, 98, 99, 2000 Free Software Foundation, Inc. - Written by - + Original code by Center for Software Science Department of Computer Science University of Utah + Largely rewritten by Alan Modra This file is part of BFD, the Binary File Descriptor library. @@ -33,10 +33,20 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "elf32-hppa.h" #define ARCH_SIZE 32 #include "elf-hppa.h" +#include "elf32-hppa.h" +/* In order to gain some understanding of code in this file without + knowing all the intricate details of the linker, note the + following: -/* We use three different hash tables to hold information for - linking PA ELF objects. + 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 @@ -44,149 +54,346 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ The second is the stub hash table which is derived from the base BFD hash table. The stub hash table holds the information - necessary to build the linker stubs during a link. */ + necessary to build the linker stubs during a link. + + There are a number of different stubs generated by the linker. + + Long branch stub: + : ldil LR'X,%r1 + : be,n RR'X(%sr4,%r1) + + PIC long branch stub: + : b,l .+8,%r1 + : addil L'X - ($PIC_pcrel$0 - 4),%r1 + : be,n R'X - ($PIC_pcrel$0 - 8)(%sr4,%r1) + + Import stub to call shared library routine from normal object file + (single sub-space version) + : addil L'lt_ptr+ltoff,%dp ; get procedure entry point + : ldw R'lt_ptr+ltoff(%r1),%r21 + : bv %r0(%r21) + : ldw R'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. + + Import stub to call shared library routine from shared library + (single sub-space version) + : addil L'ltoff,%r19 ; get procedure entry point + : ldw R'ltoff(%r1),%r21 + : bv %r0(%r21) + : ldw R'ltoff+4(%r1),%r19 ; get new dlt value. + + Import stub to call shared library routine from normal object file + (multiple sub-space support) + : addil L'lt_ptr+ltoff,%dp ; get procedure entry point + : ldw R'lt_ptr+ltoff(%r1),%r21 + : ldw R'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. + : ldsid (%r21),%r1 + : mtsp %r1,%sr0 + : be 0(%sr0,%r21) ; branch to target + : stw %rp,-24(%sp) ; save rp + + Import stub to call shared library routine from shared library + (multiple sub-space support) + : addil L'ltoff,%r19 ; get procedure entry point + : ldw R'ltoff(%r1),%r21 + : ldw R'ltoff+4(%r1),%r19 ; get new dlt value. + : ldsid (%r21),%r1 + : mtsp %r1,%sr0 + : be 0(%sr0,%r21) ; branch to target + : stw %rp,-24(%sp) ; save rp + + Export stub to return from shared lib routine (multiple sub-space support) + One of these is created for each exported procedure in a shared + library (and stored in the shared lib). Shared lib routines are + called via the first instruction in the export stub so that we can + do an inter-space return. Not required for single sub-space. + : bl,n X,%rp ; trap the return + : nop + : ldw -24(%sp),%rp ; restore the original rp + : ldsid (%rp),%r1 + : mtsp %r1,%sr0 + : be,n 0(%sr0,%rp) ; inter-space return */ + +#define PLT_ENTRY_SIZE 8 +#define 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[] = +{ + 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 */ +}; + +/* 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. */ +#ifndef RELATIVE_DYNAMIC_RELOCS +#define RELATIVE_DYNAMIC_RELOCS 0 +#endif + +enum elf32_hppa_stub_type { + hppa_stub_long_branch, + hppa_stub_long_branch_shared, + hppa_stub_import, + hppa_stub_import_shared, + hppa_stub_export, + hppa_stub_none +}; -/* Hash table for linker stubs. */ +struct elf32_hppa_stub_hash_entry { -struct elf32_hppa_stub_hash_entry -{ - /* Base hash table entry structure, we can get the name of the stub - (and thus know exactly what actions it performs) from the base - hash table entry. */ + /* Base hash table entry structure. */ struct bfd_hash_entry root; - /* Offset of the beginning of this stub. */ - bfd_vma offset; + /* The stub section. */ + asection *stub_sec; + +#if ! LONG_BRANCH_PIC_IN_SHLIB + /* It's associated reloc section. */ + asection *reloc_sec; +#endif + + /* Offset within stub_sec of the beginning of this stub. */ + bfd_vma stub_offset; /* Given the symbol's value and its section we can determine its final value when building the stubs (so the stub knows where to jump. */ - symvalue target_value; + bfd_vma target_value; asection *target_section; + + enum elf32_hppa_stub_type stub_type; + + /* The symbol table entry, if any, that this was derived from. */ + struct elf32_hppa_link_hash_entry *h; + + /* Where this stub is being called from, or, in the case of combined + stub sections, the first input section in the group. */ + asection *id_sec; }; -struct elf32_hppa_stub_hash_table -{ - /* The hash table itself. */ - struct bfd_hash_table root; +struct elf32_hppa_link_hash_entry { - /* The stub BFD. */ - bfd *stub_bfd; + struct elf_link_hash_entry elf; - /* Where to place the next stub. */ - bfd_byte *location; + /* A pointer to the most recently used stub hash entry against this + symbol. */ + struct elf32_hppa_stub_hash_entry *stub_cache; - /* Current offset in the stub section. */ - unsigned int offset; +#if ! LONG_BRANCH_PIC_IN_SHLIB + /* Used to track whether we have allocated space for a long branch + stub relocation for this symbol in the given section. */ + asection *stub_reloc_sec; +#endif -}; +#if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS + /* Used to count relocations for delayed sizing of relocation + sections. */ + struct elf32_hppa_dyn_reloc_entry { -struct elf32_hppa_link_hash_entry -{ - struct elf_link_hash_entry root; + /* Next relocation in the chain. */ + struct elf32_hppa_dyn_reloc_entry *next; + + /* The section in dynobj. */ + asection *section; + + /* Number of relocs copied in this section. */ + bfd_size_type count; + } *reloc_entries; +#endif + + /* Set during a static link if we detect a function is PIC. */ + 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; }; -struct elf32_hppa_link_hash_table -{ +struct elf32_hppa_link_hash_table { + /* The main hash table. */ struct elf_link_hash_table root; /* The stub hash table. */ - struct elf32_hppa_stub_hash_table *stub_hash_table; + struct bfd_hash_table stub_hash_table; - /* A count of the number of output symbols. */ - unsigned int output_symbol_count; + /* Linker stub bfd. */ + bfd *stub_bfd; - /* Stuff so we can handle DP relative relocations. */ - long global_value; - int global_sym_defined; + /* 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; + + /* 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; }; -/* ELF32/HPPA relocation support +/* Various hash macros and functions. */ +#define hppa_link_hash_table(p) \ + ((struct elf32_hppa_link_hash_table *) ((p)->hash)) - This file contains ELF32/HPPA relocation support as specified - in the Stratus FTX/Golf Object File Format (SED-1762) dated - February 1994. */ +#define hppa_stub_hash_lookup(table, string, create, copy) \ + ((struct elf32_hppa_stub_hash_entry *) \ + bfd_hash_lookup ((table), (string), (create), (copy))) -#include "elf32-hppa.h" -#include "hppa_stubs.h" +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 *)); + +/* 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 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 struct elf32_hppa_stub_hash_entry *hppa_add_stub + PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *)); + +static enum elf32_hppa_stub_type hppa_type_of_stub + PARAMS ((asection *, const Elf_Internal_Rela *, + struct elf32_hppa_link_hash_entry *, bfd_vma)); + +static boolean hppa_build_one_stub + PARAMS ((struct bfd_hash_entry *, PTR)); + +static boolean hppa_size_one_stub + PARAMS ((struct bfd_hash_entry *, PTR)); -static unsigned long hppa_elf_relocate_insn - PARAMS ((bfd *, asection *, unsigned long, unsigned long, long, - long, unsigned long, unsigned long, unsigned long)); +/* BFD and elf backend functions. */ +static boolean elf32_hppa_object_p PARAMS ((bfd *)); static boolean elf32_hppa_add_symbol_hook PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, const char **, flagword *, asection **, bfd_vma *)); -static bfd_reloc_status_type elf32_hppa_bfd_final_link_relocate - PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, - bfd_byte *, bfd_vma, bfd_vma, bfd_vma, struct bfd_link_info *, - asection *, const char *, int)); +static boolean elf32_hppa_create_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); -static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create - PARAMS ((bfd *)); - -static struct bfd_hash_entry * -elf32_hppa_stub_hash_newfunc - PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); +static boolean elf32_hppa_check_relocs + PARAMS ((bfd *, struct bfd_link_info *, + asection *, const Elf_Internal_Rela *)); -static boolean -elf32_hppa_relocate_section - PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, - bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); +static asection *elf32_hppa_gc_mark_hook + PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, + struct elf_link_hash_entry *, Elf_Internal_Sym *)); -static boolean -elf32_hppa_stub_hash_table_init - PARAMS ((struct elf32_hppa_stub_hash_table *, bfd *, - struct bfd_hash_entry *(*) PARAMS ((struct bfd_hash_entry *, - struct bfd_hash_table *, - const char *)))); +static boolean elf32_hppa_gc_sweep_hook + PARAMS ((bfd *, struct bfd_link_info *, + asection *, const Elf_Internal_Rela *)); -static boolean -elf32_hppa_build_one_stub PARAMS ((struct bfd_hash_entry *, PTR)); +static void elf32_hppa_hide_symbol + PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); -static unsigned int elf32_hppa_size_of_stub - PARAMS ((bfd_vma, bfd_vma, const char *)); +static boolean elf32_hppa_adjust_dynamic_symbol + PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); -static void elf32_hppa_name_of_stub - PARAMS ((bfd_vma, bfd_vma, char *)); +static boolean hppa_handle_PIC_calls + PARAMS ((struct elf_link_hash_entry *, PTR)); -/* For linker stub hash tables. */ -#define elf32_hppa_stub_hash_lookup(table, string, create, copy) \ - ((struct elf32_hppa_stub_hash_entry *) \ - bfd_hash_lookup (&(table)->root, (string), (create), (copy))) +#if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ + || RELATIVE_DYNAMIC_RELOCS) +static boolean hppa_discard_copies + PARAMS ((struct elf_link_hash_entry *, PTR)); +#endif -#define elf32_hppa_stub_hash_traverse(table, func, info) \ - (bfd_hash_traverse \ - (&(table)->root, \ - (boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) (func), \ - (info))) +static boolean clobber_millicode_symbols + PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *)); -/* For HPPA linker hash table. */ +static boolean elf32_hppa_size_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); -#define elf32_hppa_link_hash_lookup(table, string, create, copy, follow)\ - ((struct elf32_hppa_link_hash_entry *) \ - elf_link_hash_lookup (&(table)->root, (string), (create), \ - (copy), (follow))) +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 *)); -#define elf32_hppa_link_hash_traverse(table, func, info) \ - (elf_link_hash_traverse \ - (&(table)->root, \ - (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ - (info))) +static boolean elf32_hppa_relocate_section + PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, + bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); -/* Get the PA ELF linker hash table from a link_info structure. */ +static boolean elf32_hppa_finish_dynamic_symbol + PARAMS ((bfd *, struct bfd_link_info *, + struct elf_link_hash_entry *, Elf_Internal_Sym *)); -#define elf32_hppa_hash_table(p) \ - ((struct elf32_hppa_link_hash_table *) ((p)->hash)) +static boolean elf32_hppa_finish_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); +static int elf32_hppa_elf_get_symbol_type + PARAMS ((Elf_Internal_Sym *, int)); /* Assorted hash table functions. */ /* Initialize an entry in the stub hash table. */ static struct bfd_hash_entry * -elf32_hppa_stub_hash_newfunc (entry, table, string) +stub_hash_newfunc (entry, table, string) struct bfd_hash_entry *entry; struct bfd_hash_table *table; const char *string; @@ -198,11 +405,13 @@ elf32_hppa_stub_hash_newfunc (entry, table, string) /* Allocate the structure if it has not already been allocated by a subclass. */ if (ret == NULL) - ret = ((struct elf32_hppa_stub_hash_entry *) - bfd_hash_allocate (table, - sizeof (struct elf32_hppa_stub_hash_entry))); - if (ret == NULL) - return NULL; + { + ret = ((struct elf32_hppa_stub_hash_entry *) + bfd_hash_allocate (table, + sizeof (struct elf32_hppa_stub_hash_entry))); + if (ret == NULL) + return NULL; + } /* Call the allocation method of the superclass. */ ret = ((struct elf32_hppa_stub_hash_entry *) @@ -211,28 +420,65 @@ elf32_hppa_stub_hash_newfunc (entry, table, string) if (ret) { /* Initialize the local fields. */ - ret->offset = 0; + 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 a stub hash table. */ +/* Initialize an entry in the link hash table. */ -static boolean -elf32_hppa_stub_hash_table_init (table, stub_bfd, newfunc) - struct elf32_hppa_stub_hash_table *table; - bfd *stub_bfd; - struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, - struct bfd_hash_table *, - const char *)); +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; { - table->offset = 0; - table->location = 0; - table->stub_bfd = stub_bfd; - return (bfd_hash_table_init (&table->root, newfunc)); + struct elf32_hppa_link_hash_entry *ret; + + ret = (struct elf32_hppa_link_hash_entry *) entry; + + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (ret == NULL) + { + ret = ((struct elf32_hppa_link_hash_entry *) + bfd_hash_allocate (table, + sizeof (struct elf32_hppa_link_hash_entry))); + if (ret == NULL) + return NULL; + } + + /* Call the allocation method of the superclass. */ + ret = ((struct elf32_hppa_link_hash_entry *) + _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, + table, string)); + + if (ret) + { + /* Initialize the local fields. */ +#if ! LONG_BRANCH_PIC_IN_SHLIB + ret->stub_reloc_sec = NULL; +#endif + ret->stub_cache = NULL; +#if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS + ret->reloc_entries = NULL; +#endif + ret->pic_call = 0; + ret->plabel = 0; + ret->plt_abs = 0; + } + + return (struct bfd_hash_entry *) ret; } /* Create the derived linker hash table. The PA ELF port uses the derived @@ -245,549 +491,641 @@ elf32_hppa_link_hash_table_create (abfd) { struct elf32_hppa_link_hash_table *ret; - ret = ((struct elf32_hppa_link_hash_table *) - bfd_alloc (abfd, sizeof (struct elf32_hppa_link_hash_table))); + ret = ((struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, sizeof (*ret))); if (ret == NULL) return NULL; - if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, - _bfd_elf_link_hash_newfunc)) + + if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, hppa_link_hash_newfunc)) { bfd_release (abfd, ret); return NULL; } - ret->stub_hash_table = NULL; - ret->output_symbol_count = 0; - ret->global_value = 0; - ret->global_sym_defined = 0; + + /* 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->multi_subspace = 0; + ret->has_12bit_branch = 0; + ret->has_17bit_branch = 0; + ret->need_plt_stub = 0; return &ret->root.root; } -/* Relocate the given INSN given the various input parameters. +/* Build a name for an entry in the stub hash table. */ - 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; +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; { - unsigned char opcode = get_opcode (insn); - long constant_value; + char *stub_name; + size_t len; - switch (opcode) + if (hash) { - 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: - /* 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); + 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 - sym_value = hppa_field_adjust (sym_value, constant_value, r_field); + } + 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 hppa_rebuild_insn (abfd, insn, sym_value >> 2, r_format); +/* Look up an entry in the stub hash. Stub entries are cached because + creating the stub name takes a bit of time. */ - default: - if (opcode == 0) - { - constant_value = HPPA_R_CONSTANT (r_addend); +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; +{ + 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 + { + char *stub_name; - if (pcrel) - sym_value -= address; + stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel); + if (stub_name == NULL) + return NULL; - return hppa_field_adjust (sym_value, constant_value, r_field); + 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 - abort (); + { + if (hash != NULL) + hash->stub_cache = stub_entry; + } + + free (stub_name); } + + return stub_entry; } -/* Relocate an HPPA ELF section. */ +/* Add a new stub entry to the stub hash. Not all fields of the new + stub entry are initialised. */ -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; +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; { - Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Rela *rel; - Elf_Internal_Rela *relend; - - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + asection *link_sec; + asection *stub_sec; + struct elf32_hppa_stub_hash_entry *stub_entry; - rel = relocs; - relend = relocs + input_section->reloc_count; - for (; rel < relend; rel++) + link_sec = hplink->stub_group[section->id].link_sec; + stub_sec = hplink->stub_group[section->id].stub_sec; + if (stub_sec == NULL) { - int r_type; - reloc_howto_type *howto; - unsigned long r_symndx; - struct elf_link_hash_entry *h; - Elf_Internal_Sym *sym; - asection *sym_sec; - bfd_vma relocation; - bfd_reloc_status_type r; - const char *sym_name; - - r_type = ELF32_R_TYPE (rel->r_info); - if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) + stub_sec = hplink->stub_group[link_sec->id].stub_sec; + if (stub_sec == NULL) { - bfd_set_error (bfd_error_bad_value); - return false; + size_t 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; } - howto = elf_hppa_howto_table + r_type; + hplink->stub_group[section->id].stub_sec = stub_sec; + } - r_symndx = ELF32_R_SYM (rel->r_info); + /* 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; + } - if (info->relocateable) - { - /* This is a relocateable link. We don't have to change - anything, unless the reloc is against a section symbol, - in which case we have to adjust according to where the - section symbol winds up in the output section. */ - if (r_symndx < symtab_hdr->sh_info) - { - sym = local_syms + r_symndx; - if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) - { - sym_sec = local_sections[r_symndx]; - rel->r_addend += sym_sec->output_offset; - } - } + 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; +} - continue; - } +/* Determine the type of stub needed, if any, for a call. */ - /* This is a final link. */ - h = NULL; - sym = NULL; - sym_sec = NULL; - if (r_symndx < symtab_hdr->sh_info) +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->pic_call)) + { + /* If output_section is NULL, then it's a symbol defined in a + shared library. We will need an import stub. Decide between + hppa_stub_import and hppa_stub_import_shared later. For + shared links we need stubs for undefined or weak syms too; + They will presumably be resolved by the dynamic linker. */ + return hppa_stub_import; + } + + /* Determine where the call point is. */ + location = (input_sec->output_offset + + input_sec->output_section->vma + + rel->r_offset); + + branch_offset = destination - location - 8; + r_type = ELF32_R_TYPE (rel->r_info); + + /* 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; + } + + if (branch_offset + max_branch_offset >= 2*max_branch_offset) + { +#if LONG_BRANCH_VIA_PLT + if (hash != NULL + && hash->elf.dynindx != -1 + && hash->elf.plt.offset != (bfd_vma) -1) { - 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); + /* 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 - { - long indx; +#endif + return hppa_stub_long_branch; + } + return hppa_stub_none; +} - indx = r_symndx - symtab_hdr->sh_info; - h = elf_sym_hashes (input_bfd)[indx]; - while (h->root.type == bfd_link_hash_indirect - || h->root.type == bfd_link_hash_warning) - h = (struct elf_link_hash_entry *) h->root.u.i.link; - if (h->root.type == bfd_link_hash_defined - || h->root.type == bfd_link_hash_defweak) - { - sym_sec = h->root.u.def.section; - relocation = (h->root.u.def.value - + sym_sec->output_offset - + sym_sec->output_section->vma); - } - else if (h->root.type == bfd_link_hash_undefweak) - relocation = 0; - else - { - if (!((*info->callbacks->undefined_symbol) - (info, h->root.root.string, input_bfd, - input_section, rel->r_offset, true))) - return false; - break; - } - } +/* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. + IN_ARG contains the link info pointer. */ - if (h != NULL) - sym_name = h->root.root.string; - else - { - sym_name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - sym->st_name); - if (sym_name == NULL) - return false; - if (*sym_name == '\0') - sym_name = bfd_section_name (input_bfd, sym_sec); - } +#define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */ +#define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */ - r = elf32_hppa_bfd_final_link_relocate (howto, input_bfd, output_bfd, - input_section, contents, - rel->r_offset, relocation, - rel->r_addend, info, sym_sec, - sym_name, h == NULL); +#define BL_R1 0xe8200000 /* b,l .+8,%r1 */ +#define ADDIL_R1 0x28200000 /* addil L'XXX,%r1,%r1 */ +#define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */ - if (r != bfd_reloc_ok) - { - switch (r) - { - /* This can happen for DP relative relocs if $global$ is - undefined. This is a panic situation so we don't try - to continue. */ - case bfd_reloc_undefined: - case bfd_reloc_notsupported: - if (!((*info->callbacks->undefined_symbol) - (info, "$global$", input_bfd, - input_section, rel->r_offset, true))) - return false; - return false; - case bfd_reloc_dangerous: - { - /* We use this return value to indicate that we performed - a "dangerous" relocation. This doesn't mean we did - the wrong thing, it just means there may be some cleanup - that needs to be done here. - - In particular we had to swap the last call insn and its - delay slot. If the delay slot insn needed a relocation, - then we'll need to adjust the next relocation entry's - offset to account for the fact that the insn moved. - - This hair wouldn't be necessary if we inserted stubs - between procedures and used a "bl" to get to the stub. */ - if (rel != relend) - { - Elf_Internal_Rela *next_rel = rel + 1; +#define ADDIL_DP 0x2b600000 /* addil L'XXX,%dp,%r1 */ +#define LDW_R1_R21 0x48350000 /* ldw R'XXX(%sr0,%r1),%r21 */ +#define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */ +#define LDW_R1_R19 0x48330000 /* ldw R'XXX(%sr0,%r1),%r19 */ - if (rel->r_offset + 4 == next_rel->r_offset) - next_rel->r_offset -= 4; - } - break; - } - default: - case bfd_reloc_outofrange: - case bfd_reloc_overflow: - { - if (!((*info->callbacks->reloc_overflow) - (info, sym_name, howto->name, (bfd_vma) 0, - input_bfd, input_section, rel->r_offset))) - return false; - } - break; - } - } - } +#define ADDIL_R19 0x2a600000 /* addil L'XXX,%r19,%r1 */ +#define LDW_R1_DP 0x483b0000 /* ldw R'XXX(%sr0,%r1),%dp */ - return true; -} +#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) */ -/* Actually perform a relocation as part of a final link. This can get - rather hairy when linker stubs are needed. */ +#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) */ -static bfd_reloc_status_type -elf32_hppa_bfd_final_link_relocate (howto, input_bfd, output_bfd, - input_section, contents, offset, value, - addend, info, sym_sec, sym_name, is_local) - reloc_howto_type *howto; - bfd *input_bfd; - bfd *output_bfd ATTRIBUTE_UNUSED; - asection *input_section; - bfd_byte *contents; - bfd_vma offset; - bfd_vma value; - bfd_vma addend; - struct bfd_link_info *info; - asection *sym_sec; - const char *sym_name; - int is_local; -{ - unsigned long insn; - unsigned long r_type = howto->type; - unsigned long r_format = howto->bitsize; - unsigned long r_field = e_fsel; - bfd_byte *hit_data = contents + offset; - boolean r_pcrel = howto->pc_relative; +#ifndef R19_STUBS +#define R19_STUBS 1 +#endif - insn = bfd_get_32 (input_bfd, hit_data); +#if R19_STUBS +#define LDW_R1_DLT LDW_R1_R19 +#else +#define LDW_R1_DLT LDW_R1_DP +#endif - /* Make sure we have a value for $global$. FIXME isn't this effectively - just like the gp pointer on MIPS? Can we use those routines for this - purpose? */ - if (!elf32_hppa_hash_table (info)->global_sym_defined) - { - struct elf_link_hash_entry *h; - asection *sec; +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; + int val; + int size; - h = elf_link_hash_lookup (elf_hash_table (info), "$global$", false, - false, false); + /* 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; - /* If there isn't a $global$, then we're in deep trouble. */ - if (h == NULL) - return bfd_reloc_notsupported; + hplink = hppa_link_hash_table (info); + stub_sec = stub_entry->stub_sec; - /* If $global$ isn't a defined symbol, then we're still in deep - trouble. */ - if (h->root.type != bfd_link_hash_defined) - return bfd_reloc_undefined; + /* 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; - sec = h->root.u.def.section; - elf32_hppa_hash_table (info)->global_value = (h->root.u.def.value - + sec->output_section->vma - + sec->output_offset); - elf32_hppa_hash_table (info)->global_sym_defined = 1; - } + stub_bfd = stub_sec->owner; - switch (r_type) + switch (stub_entry->stub_type) { - case R_PARISC_NONE: - break; + 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); - case R_PARISC_DIR32: - case R_PARISC_DIR17F: - case R_PARISC_PCREL17C: - r_field = e_fsel; - goto do_basic_type_1; - case R_PARISC_DIR21L: - case R_PARISC_PCREL21L: - r_field = e_lrsel; - goto do_basic_type_1; - case R_PARISC_DIR17R: - case R_PARISC_PCREL17R: - case R_PARISC_DIR14R: - case R_PARISC_PCREL14R: - r_field = e_rrsel; - goto do_basic_type_1; +#if ! LONG_BRANCH_PIC_IN_SHLIB + if (info->shared) + { + /* Output a dynamic relocation for this stub. We only + output one PCREL21L reloc per stub, trusting that the + dynamic linker will also fix the implied PCREL17R for the + second instruction. PCREL21L dynamic relocs had better + never be emitted for some other purpose... */ + asection *srel; + Elf_Internal_Rela outrel; + + if (stub_entry->h == NULL) + { + (*_bfd_error_handler) + (_("%s(%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; + } - /* For all the DP relative relocations, we need to examine the symbol's - section. If it's a code section, then "data pointer relative" makes - no sense. In that case we don't adjust the "value", and for 21 bit - addil instructions, we change the source addend register from %dp to - %r0. */ - case R_PARISC_DPREL21L: - r_field = e_lrsel; - if (sym_sec->flags & SEC_CODE) + srel = stub_entry->reloc_sec; + if (srel == NULL) + { + (*_bfd_error_handler) + (_("Could not find relocation section for %s"), + stub_sec->name); + bfd_set_error (bfd_error_bad_value); + return false; + } + + 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 hppa_stub_import: + case hppa_stub_import_shared: + sym_value = (stub_entry->h->elf.plt.offset + + hplink->splt->output_offset + + hplink->splt->output_section->vma + - elf_gp (hplink->splt->output_section->owner)); + + insn = ADDIL_DP; +#if R19_STUBS + if (stub_entry->stub_type == hppa_stub_import_shared) + insn = ADDIL_R19; +#endif + 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) { - if ((insn & 0xfc000000) >> 26 == 0xa - && (insn & 0x03e00000) >> 21 == 0x1b) - insn &= ~0x03e00000; + 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); + + 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); + + size = 28; } else - value -= elf32_hppa_hash_table (info)->global_value; - goto do_basic_type_1; - case R_PARISC_DPREL14R: - r_field = e_rrsel; - if ((sym_sec->flags & SEC_CODE) == 0) - value -= elf32_hppa_hash_table (info)->global_value; - goto do_basic_type_1; - case R_PARISC_DPREL14F: - r_field = e_fsel; - if ((sym_sec->flags & SEC_CODE) == 0) - value -= elf32_hppa_hash_table (info)->global_value; - goto do_basic_type_1; + { + 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); - /* These cases are separate as they may involve a lot more work - to deal with linker stubs. */ - case R_PARISC_PLABEL32: - case R_PARISC_PLABEL21L: - case R_PARISC_PLABEL14R: - case R_PARISC_PCREL17F: - { - bfd_vma location; - unsigned int len; - char *new_name, *stub_name; - - /* Get the field selector right. We'll need it in a minute. */ - if (r_type == R_PARISC_PCREL17F - || r_type == R_PARISC_PLABEL32) - r_field = e_fsel; - else if (r_type == R_PARISC_PLABEL21L) - r_field = e_lrsel; - else if (r_type == R_PARISC_PLABEL14R) - r_field = e_rrsel; - - /* Find out where we are and where we're going. */ - location = (offset + - input_section->output_offset + - input_section->output_section->vma); - - len = strlen (sym_name) + 1; - if (is_local) - len += 9; - new_name = bfd_malloc (len); - if (!new_name) - return bfd_reloc_notsupported; - strcpy (new_name, sym_name); - - /* Local symbols have unique IDs. */ - if (is_local) - sprintf (new_name + len - 10, "_%08x", (int)sym_sec); - - /* Any kind of linker stub needed? */ - if (((int)(value - location) > 0x3ffff) - || ((int)(value - location) < -0x40000)) - { - struct elf32_hppa_stub_hash_table *stub_hash_table; - struct elf32_hppa_stub_hash_entry *stub_hash; - asection *stub_section; + size = 16; + } - /* Build a name for the stub. */ + if (!info->shared + && stub_entry->h != NULL + && stub_entry->h->pic_call) + { + /* 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; - len = strlen (new_name); - len += 23; - stub_name = bfd_malloc (len); - if (!stub_name) - return bfd_reloc_notsupported; - elf32_hppa_name_of_stub (location, value, stub_name); - strcat (stub_name, new_name); - free (new_name); + dynobj = hplink->root.dynobj; + eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h; - stub_hash_table = elf32_hppa_hash_table (info)->stub_hash_table; + BFD_ASSERT (eh->elf.root.type == bfd_link_hash_defined + || eh->elf.root.type == bfd_link_hash_defweak); - stub_hash - = elf32_hppa_stub_hash_lookup (stub_hash_table, stub_name, - false, false); + value = (eh->elf.root.u.def.value + + eh->elf.root.u.def.section->output_offset + + eh->elf.root.u.def.section->output_section->vma); - /* We're done with that name. */ - free (stub_name); + /* Fill in the entry in the procedure linkage table. - /* The stub BFD only has one section. */ - stub_section = stub_hash_table->stub_bfd->sections; + The format of a plt entry is + + <__gp>. */ - if (stub_hash != NULL) - { - if (r_type == R_PARISC_PCREL17F) - { - unsigned long delay_insn; - unsigned int opcode, rtn_reg, ldo_target_reg, ldo_src_reg; - - /* We'll need to peek at the next insn. */ - delay_insn = bfd_get_32 (input_bfd, hit_data + 4); - opcode = get_opcode (delay_insn); - - /* We also need to know the return register for this - call. */ - rtn_reg = (insn & 0x03e00000) >> 21; - - ldo_src_reg = (delay_insn & 0x03e00000) >> 21; - ldo_target_reg = (delay_insn & 0x001f0000) >> 16; - - /* Munge up the value and other parameters for - hppa_elf_relocate_insn. */ - - value = (stub_hash->offset - + stub_section->output_offset - + stub_section->output_section->vma); - - r_format = 17; - r_field = e_fsel; - r_pcrel = 0; - addend = 0; - - /* We need to peek at the delay insn and determine if - we'll need to swap the branch and its delay insn. */ - if ((insn & 2) - || (opcode == LDO - && ldo_target_reg == rtn_reg) - || (delay_insn == 0x08000240)) - { - /* No need to swap the branch and its delay slot, but - we do need to make sure to jump past the return - pointer update in the stub. */ - value += 4; - - /* If the delay insn does a return pointer adjustment, - then we have to make sure it stays valid. */ - if (opcode == LDO - && ldo_target_reg == rtn_reg) - { - delay_insn &= 0xfc00ffff; - delay_insn |= ((31 << 21) | (31 << 16)); - bfd_put_32 (input_bfd, delay_insn, hit_data + 4); - } - /* Use a BLE to reach the stub. */ - insn = BLE_SR4_R0; - } - else - { - /* Wonderful, we have to swap the call insn and its - delay slot. */ - bfd_put_32 (input_bfd, delay_insn, hit_data); - /* Use a BLE,n to reach the stub. */ - insn = (BLE_SR4_R0 | 0x2); - bfd_put_32 (input_bfd, insn, hit_data + 4); - insn = hppa_elf_relocate_insn (input_bfd, - input_section, - insn, offset + 4, - value, addend, - r_format, r_field, - r_pcrel); - /* Update the instruction word. */ - bfd_put_32 (input_bfd, insn, hit_data + 4); - return bfd_reloc_dangerous; - } - } - else - return bfd_reloc_notsupported; - } - } - goto do_basic_type_1; - } + bfd_put_32 (hplink->splt->owner, value, + hplink->splt->contents + eh->elf.plt.offset); + value = elf_gp (hplink->splt->output_section->owner); + bfd_put_32 (hplink->splt->owner, value, + hplink->splt->contents + eh->elf.plt.offset + 4); + } + break; + + 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); + + /* 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) + { + (*_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); -do_basic_type_1: - insn = hppa_elf_relocate_insn (input_bfd, input_section, insn, - offset, value, addend, r_format, - r_field, r_pcrel); + 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; - /* Something we don't know how to handle. */ default: - return bfd_reloc_notsupported; + BFD_FAIL (); + return false; } - /* Update the instruction word. */ - bfd_put_32 (input_bfd, insn, hit_data); - return (bfd_reloc_ok); + 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; +{ + unsigned int flags = elf_elfheader (abfd)->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 @@ -807,518 +1145,3084 @@ elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) return true; } -/* Determine the name of the stub needed to perform a call assuming the - argument relocation bits for caller and callee are in CALLER and CALLEE - for a call from LOCATION to DESTINATION. Copy the name into STUB_NAME. */ - -static void -elf32_hppa_name_of_stub (location, destination, stub_name) - bfd_vma location ATTRIBUTE_UNUSED; - bfd_vma destination ATTRIBUTE_UNUSED; - char *stub_name; -{ - strcpy (stub_name, "_____long_branch_stub_"); -} - -/* Compute the size of the stub needed to call from LOCATION to DESTINATION - (a function named SYM_NAME), with argument relocation bits CALLER and - CALLEE. Return zero if no stub is needed to perform such a call. */ - -static unsigned int -elf32_hppa_size_of_stub (location, destination, sym_name) - bfd_vma location, destination; - const char *sym_name; -{ - /* Determine if a long branch stub is needed. */ - if (!(((int)(location - destination) > 0x3ffff) - || ((int)(location - destination) < -0x40000))) - return 0; - - if (!strncmp ("$$", sym_name, 2) - && strcmp ("$$dyncall", sym_name)) - return 12; - else - return 16; -} - -/* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. - IN_ARGS contains the stub BFD and link info pointers. */ +/* Create the .plt and .got sections, and set up our hash table + short-cuts to various dynamic sections. */ static boolean -elf32_hppa_build_one_stub (gen_entry, in_args) - struct bfd_hash_entry *gen_entry; - PTR in_args; +elf32_hppa_create_dynamic_sections (abfd, info) + bfd *abfd; + struct bfd_link_info *info; { - void **args = (void **)in_args; - bfd *stub_bfd = (bfd *)args[0]; - struct bfd_link_info *info = (struct bfd_link_info *)args[1]; - struct elf32_hppa_stub_hash_entry *entry; - struct elf32_hppa_stub_hash_table *stub_hash_table; - bfd_byte *loc; - symvalue sym_value; - const char *sym_name; - - /* Initialize pointers to the stub hash table, the particular entry we - are building a stub for, and where (in memory) we should place the stub - instructions. */ - entry = (struct elf32_hppa_stub_hash_entry *)gen_entry; - stub_hash_table = elf32_hppa_hash_table(info)->stub_hash_table; - loc = stub_hash_table->location; - - /* Make a note of the offset within the stubs for this entry. */ - entry->offset = stub_hash_table->offset; - - /* The symbol's name starts at offset 22. */ - sym_name = entry->root.string + 22; - - sym_value = (entry->target_value - + entry->target_section->output_offset - + entry->target_section->output_section->vma); - - if (1) - { - /* Create one of two variant long branch stubs. One for $$dyncall and - normal calls, the other for calls to millicode. */ - unsigned long insn; - int millicode_call = 0; - - if (!strncmp ("$$", sym_name, 2) && strcmp ("$$dyncall", sym_name)) - millicode_call = 1; - - /* First the return pointer adjustment. Depending on exact calling - sequence this instruction may be skipped. */ - bfd_put_32 (stub_bfd, LDO_M4_R31_R31, loc); - - /* The next two instructions are the long branch itself. 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. - Long branches to millicode nullify the delay slot of the "be". */ - insn = hppa_rebuild_insn (stub_bfd, LDIL_R1, - hppa_field_adjust (sym_value, 0, e_lrsel), 21); - bfd_put_32 (stub_bfd, insn, loc + 4); - insn = hppa_rebuild_insn (stub_bfd, BE_SR4_R1 | (millicode_call ? 2 : 0), - hppa_field_adjust (sym_value, 0, e_rrsel) >> 2, - 17); - bfd_put_32 (stub_bfd, insn, loc + 8); - - if (!millicode_call) - { - /* The sequence to call this stub places the return pointer into %r31, - the final target expects the return pointer in %r2, so copy the - return pointer into the proper register. */ - bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 12); - - /* Update the location and offsets. */ - stub_hash_table->location += 16; - stub_hash_table->offset += 16; - } - else - { - /* Update the location and offsets. */ - stub_hash_table->location += 12; - stub_hash_table->offset += 12; - } - - } - return true; -} + struct elf32_hppa_link_hash_table *hplink; -/* External entry points for sizing and building linker stubs. */ + /* Don't try to create the .plt and .got twice. */ + hplink = hppa_link_hash_table (info); + if (hplink->splt != NULL) + return true; -/* Build all the stubs associated with the current output file. The - stubs are kept in a hash table attached to the main linker hash - table. This is called via hppaelf_finish in the linker. */ + /* Call the generic code to do most of the work. */ + if (! _bfd_elf_create_dynamic_sections (abfd, info)) + return false; -boolean -elf32_hppa_build_stubs (stub_bfd, info) - bfd *stub_bfd; - struct bfd_link_info *info; -{ - /* The stub BFD only has one section. */ - asection *stub_sec = stub_bfd->sections; - struct elf32_hppa_stub_hash_table *table; - unsigned int size; - void *args[2]; - - /* So we can pass both the BFD for the stubs and the link info - structure to the routine which actually builds stubs. */ - args[0] = stub_bfd; - args[1] = info; - - /* Allocate memory to hold the linker stubs. */ - size = bfd_section_size (stub_bfd, stub_sec); - stub_sec->contents = (unsigned char *) bfd_zalloc (stub_bfd, size); - if (stub_sec->contents == NULL) + 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; - table = elf32_hppa_hash_table(info)->stub_hash_table; - table->location = stub_sec->contents; - /* Build the stubs as directed by the stub hash table. */ - elf32_hppa_stub_hash_traverse (table, elf32_hppa_build_one_stub, args); + hplink->sdynbss = bfd_get_section_by_name (abfd, ".dynbss"); + hplink->srelbss = bfd_get_section_by_name (abfd, ".rela.bss"); return true; } -/* Determine and set the size of the stub section for a final link. - - The basic idea here is to examine all the relocations looking for - PC-relative calls to a target that is unreachable with a "bl" - instruction or calls where the caller and callee disagree on the - location of their arguments or return value. */ +/* 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. */ -boolean -elf32_hppa_size_stubs (stub_bfd, output_bfd, link_info) - bfd *stub_bfd; - bfd *output_bfd ATTRIBUTE_UNUSED; - struct bfd_link_info *link_info; +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 *input_bfd; - asection *section, *stub_sec = 0; + bfd *dynobj; Elf_Internal_Shdr *symtab_hdr; - Elf_Internal_Sym *local_syms, **all_local_syms; - unsigned int i, index, bfd_count = 0; - struct elf32_hppa_stub_hash_table *stub_hash_table = 0; - - /* Create and initialize the stub hash table. */ - stub_hash_table = ((struct elf32_hppa_stub_hash_table *) - bfd_malloc (sizeof (struct elf32_hppa_stub_hash_table))); - if (!stub_hash_table) - goto error_return; - - if (!elf32_hppa_stub_hash_table_init (stub_hash_table, stub_bfd, - elf32_hppa_stub_hash_newfunc)) - goto error_return; - - /* Attach the hash tables to the main hash table. */ - elf32_hppa_hash_table(link_info)->stub_hash_table = stub_hash_table; - - /* Count the number of input BFDs. */ - for (input_bfd = link_info->input_bfds; - input_bfd != NULL; - input_bfd = input_bfd->link_next) - bfd_count++; - - /* Magic as we know the stub bfd only has one section. */ - stub_sec = stub_bfd->sections; - - /* If generating a relocateable output file, then we don't - have to examine the relocs. */ - if (link_info->relocateable) - { - for (i = 0; i < bfd_count; i++) - if (all_local_syms[i]) - free (all_local_syms[i]); - free (all_local_syms); - return true; - } - - /* Now that we have argument location information for all the global - functions we can start looking for stubs. */ - for (input_bfd = link_info->input_bfds, index = 0; - input_bfd != NULL; - input_bfd = input_bfd->link_next, index++) + 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++) { - /* We'll need the symbol table in a second. */ - symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; - if (symtab_hdr->sh_info == 0) - continue; + 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; - local_syms = all_local_syms[index]; + r_symndx = ELF32_R_SYM (rel->r_info); - /* 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 (r_symndx < symtab_hdr->sh_info) + h = NULL; + else + h = ((struct elf32_hppa_link_hash_entry *) + sym_hashes[r_symndx - symtab_hdr->sh_info]); - /* If there aren't any relocs, then there's nothing to do. */ - if ((section->flags & SEC_RELOC) == 0 - || section->reloc_count == 0) - continue; + r_type = ELF32_R_TYPE (rel->r_info); - /* Allocate space for the external relocations. */ - external_relocs - = ((Elf32_External_Rela *) - bfd_malloc (section->reloc_count - * sizeof (Elf32_External_Rela))); - if (external_relocs == NULL) + switch (r_type) + { + case R_PARISC_DLTIND14F: + case R_PARISC_DLTIND14R: + case R_PARISC_DLTIND21L: + /* This symbol requires a global offset table entry. */ + need_entry = NEED_GOT; + + /* Mark this section as containing PIC code. */ + sec->flags |= SEC_HAS_GOT_REF; + break; + + case R_PARISC_PLABEL14R: /* "Official" procedure labels. */ + case R_PARISC_PLABEL21L: + case R_PARISC_PLABEL32: + /* If the addend is non-zero, we break badly. */ + BFD_ASSERT (rel->r_addend == 0); + + /* 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. */ + need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL; + break; + + 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) { - for (i = 0; i < bfd_count; i++) - if (all_local_syms[i]) - free (all_local_syms[i]); - free (all_local_syms); - goto error_return; + /* 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; } - - /* Likewise for the internal relocations. */ - internal_relocs - = ((Elf_Internal_Rela *) - bfd_malloc (section->reloc_count * sizeof (Elf_Internal_Rela))); - if (internal_relocs == NULL) + else { - free (external_relocs); - for (i = 0; i < bfd_count; i++) - if (all_local_syms[i]) - free (all_local_syms[i]); - free (all_local_syms); - goto error_return; + /* Global symbols will need a .plt entry if they remain + global, and in most cases won't need a long branch + stub. Unfortunately, we have to cater for the case + where a symbol is forced local by versioning, or due + to symbolic linking, and we lose the .plt entry. */ + need_entry = NEED_PLT | NEED_STUBREL; } + break; + + case R_PARISC_SEGBASE: /* Used to set segment base. */ + case R_PARISC_SEGREL32: /* Relative reloc. */ + case R_PARISC_PCREL14F: /* PC relative load/store. */ + case R_PARISC_PCREL14R: + case R_PARISC_PCREL17R: /* External branches. */ + case R_PARISC_PCREL21L: /* As above, and for load/store too. */ + /* We don't need to propagate the relocation if linking a + shared object since these are section relative. */ + continue; - /* Read in the external relocs. */ - input_rel_hdr = &elf_section_data (section)->rel_hdr; - if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 - || bfd_read (external_relocs, 1, input_rel_hdr->sh_size, - input_bfd) != input_rel_hdr->sh_size) + case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */ + case R_PARISC_DPREL14R: + case R_PARISC_DPREL21L: + if (info->shared) { - free (external_relocs); - free (internal_relocs); - for (i = 0; i < bfd_count; i++) - if (all_local_syms[i]) - free (all_local_syms[i]); - free (all_local_syms); - goto error_return; + (*_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, PARISC.unwind relocs. */ + /* We may want to output a dynamic relocation later. */ + need_entry = NEED_DYNREL; + break; + + /* This relocation describes the C++ object vtable hierarchy. + Reconstruct it for later use during GC. */ + case R_PARISC_GNU_VTINHERIT: + if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, + &h->elf, rel->r_offset)) + return false; + continue; - /* 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); + /* 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: + continue; + } + + /* Now carry out our orders. */ + if (need_entry & NEED_GOT) + { + /* Allocate space for a GOT entry, as well as a dynamic + relocation for this entry. */ + if (dynobj == NULL) + hplink->root.dynobj = dynobj = abfd; - /* We're done with the external relocs, free them. */ - free (external_relocs); + if (hplink->sgot == NULL) + { + if (! elf32_hppa_create_dynamic_sections (dynobj, info)) + return false; + } - /* Now examine each relocation. */ - irela = internal_relocs; - irelaend = irela + section->reloc_count; - for (; irela < irelaend; irela++) + if (h != NULL) { - long r_type, size_of_stub; - unsigned long r_index; - struct elf_link_hash_entry *hash; - struct elf32_hppa_stub_hash_entry *stub_hash; - Elf_Internal_Sym *sym; - asection *sym_sec; - const char *sym_name; - symvalue sym_value; - bfd_vma location, destination; - char *new_name = NULL; - - r_type = ELF32_R_TYPE (irela->r_info); - r_index = ELF32_R_SYM (irela->r_info); - - if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) + if (h->elf.got.refcount == -1) { - bfd_set_error (bfd_error_bad_value); - free (internal_relocs); - for (i = 0; i < bfd_count; i++) - if (all_local_syms[i]) - free (all_local_syms[i]); - free (all_local_syms); - goto error_return; - } + h->elf.got.refcount = 1; - /* Only look for stubs on call instructions or plabel - references. */ - if (r_type != R_PARISC_PCREL17F - && r_type != R_PARISC_PLABEL32 - && r_type != R_PARISC_PLABEL21L - && r_type != R_PARISC_PLABEL14R) - continue; + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->elf.dynindx == -1) + { + if (! bfd_elf32_link_record_dynamic_symbol (info, + &h->elf)) + return false; + } - /* Now determine the call target, its name, value, section - and argument relocation bits. */ - hash = NULL; - sym = NULL; - sym_sec = NULL; - if (r_index < symtab_hdr->sh_info) + hplink->sgot->_raw_size += GOT_ENTRY_SIZE; + hplink->srelgot->_raw_size += sizeof (Elf32_External_Rela); + } + else + h->elf.got.refcount += 1; + } + else + { + /* This is a global offset table entry for a local symbol. */ + if (local_got_refcounts == NULL) { - /* It's a local symbol. */ - Elf_Internal_Shdr *hdr; - - sym = local_syms + r_index; - hdr = elf_elfsections (input_bfd)[sym->st_shndx]; - sym_sec = hdr->bfd_section; - sym_name = bfd_elf_string_from_elf_section (input_bfd, - symtab_hdr->sh_link, - sym->st_name); - sym_value = (ELF_ST_TYPE (sym->st_info) == STT_SECTION - ? 0 : sym->st_value); - destination = (sym_value - + sym_sec->output_offset - + sym_sec->output_section->vma); - - /* Tack on an ID so we can uniquely identify this local - symbol in the stub or arg info hash tables. */ - new_name = bfd_malloc (strlen (sym_name) + 10); - if (new_name == 0) + size_t 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 * 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); + } + if (local_got_refcounts[r_symndx] == -1) + { + local_got_refcounts[r_symndx] = 1; + + hplink->sgot->_raw_size += GOT_ENTRY_SIZE; + if (info->shared) { - free (internal_relocs); - for (i = 0; i < bfd_count; i++) - if (all_local_syms[i]) - free (all_local_syms[i]); - free (all_local_syms); - goto error_return; + /* If we are generating a shared object, we need to + output a reloc so that the dynamic linker can + adjust this GOT entry (because the address + the shared library is loaded at is not fixed). */ + hplink->srelgot->_raw_size += + sizeof (Elf32_External_Rela); } - sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); - sym_name = new_name; } else - { - /* It's an external symbol. */ - long index; + local_got_refcounts[r_symndx] += 1; + } + } - index = r_index - symtab_hdr->sh_info; - hash = elf_sym_hashes (input_bfd)[index]; - if (hash->root.type == bfd_link_hash_defined - || hash->root.type == bfd_link_hash_defweak) + if (need_entry & NEED_PLT) + { + /* If we are creating a shared library, and this is a reloc + against a weak symbol or a global symbol in a dynamic + object, then we will be creating an import stub and a + .plt entry for the symbol. Similarly, on a normal link + to symbols defined in a dynamic object we'll need the + import stub and a .plt entry. We don't know yet whether + the symbol is defined or not, so make an entry anyway and + clean up later in adjust_dynamic_symbol. */ + if ((sec->flags & SEC_ALLOC) != 0) + { + if (h != NULL) + { + if (h->elf.plt.refcount == -1) { - sym_sec = hash->root.u.def.section; - sym_name = hash->root.root.string; - sym_value = hash->root.u.def.value; - destination = (sym_value - + sym_sec->output_offset - + sym_sec->output_section->vma); + 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) + { + int indx; + + if (local_got_refcounts == NULL) { - bfd_set_error (bfd_error_bad_value); - free (internal_relocs); - for (i = 0; i < bfd_count; i++) - if (all_local_syms[i]) - free (all_local_syms[i]); - free (all_local_syms); - goto error_return; + size_t size; + + /* Allocate space for local got offsets and local + plt offsets. */ + size = symtab_hdr->sh_info * 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); } + indx = r_symndx + symtab_hdr->sh_info; + if (local_got_refcounts[indx] == -1) + local_got_refcounts[indx] = 1; + else + local_got_refcounts[indx] += 1; } + } + } + + if (need_entry & (NEED_DYNREL | NEED_STUBREL)) + { + /* Flag this symbol as having a non-got, non-plt reference + so that we generate copy relocs if it turns out to be + dynamic. */ + if (h != NULL) + h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; + + /* If we are creating a shared library then we need to copy + the reloc into the shared library. However, if we are + linking with -Bsymbolic, we need only copy absolute + relocs or relocs against symbols that are not defined in + an object we are including in the link. PC- or DP- or + DLT-relative relocs against any local sym or global sym + with DEF_REGULAR set, can be discarded. At this point we + have not seen all the input files, so it is possible that + DEF_REGULAR is not set now but will be set later (it is + never cleared). We account for that possibility below by + storing information in the reloc_entries field of the + hash table entry. + + A similar situation to the -Bsymbolic case occurs when + creating shared libraries and symbol visibility changes + render the symbol local. + + As it turns out, all the relocs we will be creating here + are absolute, so we cannot remove them on -Bsymbolic + links or visibility changes anyway. A STUB_REL reloc + is absolute too, as in that case it is the reloc in the + stub we will be creating, rather than copying the PCREL + reloc in the branch. */ + if ((sec->flags & SEC_ALLOC) != 0 + && info->shared +#if RELATIVE_DYNAMIC_RELOCS + && (!info->symbolic + || is_absolute_reloc (r_type) + || (h != NULL + && ((h->elf.elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0))) +#endif + ) + { + boolean doit; + asection *srel; - /* Now determine where the call point is. */ - location = (section->output_offset - + section->output_section->vma - + irela->r_offset); - - /* We only care about the destination for PCREL function - calls (eg. we don't care for PLABELS). */ - if (r_type != R_PARISC_PCREL17F) - location = destination; - - /* Determine what (if any) linker stub is needed and its - size (in bytes). */ - size_of_stub = elf32_hppa_size_of_stub (location, - destination, - sym_name); - if (size_of_stub != 0) + 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 *stub_name; - unsigned int len; + char *name; - /* Get the name of this stub. */ - len = strlen (sym_name); - len += 23; + if (dynobj == NULL) + hplink->root.dynobj = dynobj = abfd; - stub_name = bfd_malloc (len); - if (!stub_name) + name = bfd_elf_string_from_elf_section + (abfd, + elf_elfheader (abfd)->e_shstrndx, + elf_section_data (sec)->rel_hdr.sh_name); + if (name == NULL) { - /* Because sym_name was mallocd above for local - symbols. */ - if (r_index < symtab_hdr->sh_info) - free (new_name); - - free (internal_relocs); - for (i = 0; i < bfd_count; i++) - if (all_local_syms[i]) - free (all_local_syms[i]); - free (all_local_syms); - goto error_return; + (*_bfd_error_handler) + (_("Could not find relocation section for %s"), + sec->name); + bfd_set_error (bfd_error_bad_value); + return false; } - elf32_hppa_name_of_stub (location, destination, stub_name); - strcat (stub_name + 22, sym_name); - /* Because sym_name was malloced above for local symbols. */ - if (r_index < symtab_hdr->sh_info) - free (new_name); + if ((need_entry & NEED_STUBREL)) + { + size_t 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; + } - stub_hash - = elf32_hppa_stub_hash_lookup (stub_hash_table, stub_name, - false, false); - if (stub_hash != NULL) + srel = bfd_get_section_by_name (dynobj, name); + if (srel == NULL) { - /* The proper stub has already been created, nothing - else to do. */ - free (stub_name); + flagword flags; + + srel = bfd_make_section (dynobj, name); + flags = (SEC_HAS_CONTENTS | SEC_READONLY + | SEC_IN_MEMORY | SEC_LINKER_CREATED); + if ((sec->flags & SEC_ALLOC) != 0) + flags |= SEC_ALLOC | SEC_LOAD; + if (srel == NULL + || !bfd_set_section_flags (dynobj, srel, flags) + || !bfd_set_section_alignment (dynobj, srel, 2)) + return false; } + else if ((need_entry & NEED_STUBREL)) + free (name); + + if ((need_entry & NEED_STUBREL)) + stubreloc = srel; else + sreloc = srel; + } + +#if ! LONG_BRANCH_PIC_IN_SHLIB + /* If this is a function call, we only need one dynamic + reloc for the stub as all calls to a particular + function will go through the same stub. Actually, a + long branch stub needs two relocations, but we count + on some intelligence on the part of the dynamic + linker. */ + if ((need_entry & NEED_STUBREL)) + { + doit = h->stub_reloc_sec != stubreloc; + h->stub_reloc_sec = stubreloc; + } + else +#endif + doit = 1; + + if (doit) + { + srel->_raw_size += sizeof (Elf32_External_Rela); + +#if ! LONG_BRANCH_PIC_IN_SHLIB || RELATIVE_DYNAMIC_RELOCS + /* Keep track of relocations we have entered for + this global symbol, so that we can discard them + later if necessary. */ + if (h != NULL + && (0 +#if RELATIVE_DYNAMIC_RELOCS + || ! is_absolute_reloc (rtype) +#endif + || (need_entry & NEED_STUBREL))) { - bfd_set_section_size (stub_bfd, stub_sec, - (bfd_section_size (stub_bfd, - stub_sec) - + size_of_stub)); - - /* Enter this entry into the linker stub hash table. */ - stub_hash - = elf32_hppa_stub_hash_lookup (stub_hash_table, - stub_name, true, true); - if (stub_hash == NULL) + 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) { - free (stub_name); - free (internal_relocs); - for (i = 0; i < bfd_count; i++) - if (all_local_syms[i]) - free (all_local_syms[i]); - free (all_local_syms); - goto error_return; + p = ((struct elf32_hppa_dyn_reloc_entry *) + bfd_alloc (dynobj, sizeof *p)); + if (p == NULL) + return false; + p->next = h->reloc_entries; + h->reloc_entries = p; + p->section = srel; + p->count = 0; } - /* We'll need these to determine the address that the - stub will branch to. */ - stub_hash->target_value = sym_value; - stub_hash->target_section = sym_sec; + /* NEED_STUBREL and NEED_DYNREL are never both + set. Leave the count at zero for the + NEED_STUBREL case as we only ever have one + stub reloc per section per symbol, and this + simplifies code in hppa_discard_copies. */ + if (! (need_entry & NEED_STUBREL)) + ++p->count; } - free (stub_name); +#endif } } - /* We're done with the internal relocs, free them. */ - free (internal_relocs); } } - /* We're done with the local symbols, free them. */ - for (i = 0; i < bfd_count; i++) - if (all_local_syms[i]) - free (all_local_syms[i]); - free (all_local_syms); + return true; +} -error_return: - /* Return gracefully, avoiding dangling references to the hash tables. */ - if (stub_hash_table) - { - elf32_hppa_hash_table(link_info)->stub_hash_table = NULL; - free (stub_hash_table); +/* Return the section that should be marked against garbage collection + for a given relocation. */ + +static asection * +elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym) + bfd *abfd; + struct bfd_link_info *info ATTRIBUTE_UNUSED; + Elf_Internal_Rela *rel; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; +{ + if (h != NULL) + { + switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) + { + case R_PARISC_GNU_VTINHERIT: + case R_PARISC_GNU_VTENTRY: + break; + + default: + switch (h->root.type) + { + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + return h->root.u.def.section; + + case bfd_link_hash_common: + return h->root.u.c.p->section; + + default: + break; + } + } + } + else + { + if (!(elf_bad_symtab (abfd) + && ELF_ST_BIND (sym->st_info) != STB_LOCAL) + && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) + && sym->st_shndx != SHN_COMMON)) + { + return bfd_section_from_elf_index (abfd, sym->st_shndx); + } + } + + return NULL; +} + +/* Update the got and plt entry reference counts for the section being + removed. */ + +static boolean +elf32_hppa_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; + asection *sgot; + asection *srelgot; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_refcounts (abfd); + 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; + + sgot = hplink->sgot; + srelgot = hplink->srelgot; + + relend = relocs + sec->reloc_count; + for (rel = relocs; rel < relend; rel++) + switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) + { + case R_PARISC_DLTIND14F: + case R_PARISC_DLTIND14R: + case R_PARISC_DLTIND21L: + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + if (h->got.refcount > 0) + { + h->got.refcount -= 1; + if (h->got.refcount == 0) + { + sgot->_raw_size -= GOT_ENTRY_SIZE; + srelgot->_raw_size -= sizeof (Elf32_External_Rela); + } + } + } + else if (local_got_refcounts != NULL) + { + if (local_got_refcounts[r_symndx] > 0) + { + local_got_refcounts[r_symndx] -= 1; + if (local_got_refcounts[r_symndx] == 0) + { + sgot->_raw_size -= GOT_ENTRY_SIZE; + if (info->shared) + srelgot->_raw_size -= sizeof (Elf32_External_Rela); + } + } + } + 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_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; + + default: + break; + } + + return true; +} + +/* 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; +{ + 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; + } +} + +/* 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 boolean +elf32_hppa_adjust_dynamic_symbol (info, h) + struct bfd_link_info *info; + struct elf_link_hash_entry *h; +{ + 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 (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 (!info->shared + && h->plt.refcount > 0 + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0) + { + ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; + } + else + { + h->plt.offset = (bfd_vma) -1; + h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + return true; + } + } + + /* Make an entry in the .plt section. */ + s = hplink->splt; + h->plt.offset = s->_raw_size; + 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) + { + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1 + && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) + { + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + + /* We also need to make an entry in the .rela.plt section. */ + s = hplink->srelplt; + s->_raw_size += sizeof (Elf32_External_Rela); + + hplink->need_plt_stub = 1; + } + return true; + } + + /* 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) + { + BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined + || h->weakdef->root.type == bfd_link_hash_defweak); + h->root.u.def.section = h->weakdef->root.u.def.section; + h->root.u.def.value = h->weakdef->root.u.def.value; + return true; + } + + /* This is a reference to a symbol defined by a dynamic object which + is not a function. */ + + /* If we are creating a shared library, we must presume that the + only references to the symbol are via the global offset table. + For such cases we need not do anything here; the relocations will + be handled correctly by relocate_section. */ + if (info->shared) + return true; + + /* If there are no references to this symbol that do not use the + GOT, we don't need to generate a copy reloc. */ + if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0) + return true; + + /* We must allocate the symbol in our .dynbss section, which will + become part of the .bss section of the executable. There will be + an entry for this symbol in the .dynsym section. The dynamic + object will contain position independent code, so all references + from the dynamic object to this symbol will go through the global + offset table. The dynamic linker will use the .dynsym entry to + determine the address it must put in the global offset table, so + both the dynamic object and the regular object will refer to the + same memory location for the variable. */ + + s = hplink->sdynbss; + + /* We must generate a COPY reloc to tell the dynamic linker to + copy the initial value out of the dynamic object and into the + runtime process image. We need to remember the offset into the + .rela.bss section we are going to use. */ + if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) + { + asection *srel; + + srel = hplink->srelbss; + srel->_raw_size += sizeof (Elf32_External_Rela); + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; + } + + { + /* 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; +} + +/* 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; +{ + struct bfd_link_info *info; + bfd *dynobj; + struct elf32_hppa_link_hash_table *hplink; + asection *s; + + if (! (h->plt.refcount > 0 + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)) + { + 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)->pic_call = 1; + + info = (struct bfd_link_info *) inf; + hplink = hppa_link_hash_table (info); + dynobj = hplink->root.dynobj; + + /* Make an entry in the .plt section. */ + s = hplink->splt; + h->plt.offset = s->_raw_size; + s->_raw_size += PLT_ENTRY_SIZE; + + return true; +} + +#if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ + || RELATIVE_DYNAMIC_RELOCS) +/* This function is called via elf_link_hash_traverse to discard space + we allocated for relocs that it turned out we didn't need. */ + +static boolean +hppa_discard_copies (h, inf) + struct elf_link_hash_entry *h; + PTR inf; +{ + struct elf32_hppa_dyn_reloc_entry *s; + struct elf32_hppa_link_hash_entry *eh; + struct bfd_link_info *info; + + eh = (struct elf32_hppa_link_hash_entry *) h; + info = (struct bfd_link_info *) inf; + +#if ! LONG_BRANCH_PIC_IN_SHLIB && 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. s->count will + only be zero for stub relocs, which provides a handy way of + flagging these relocs, and means we need do nothing special for + the forced local and symbolic link case. */ + if (eh->stub_reloc_sec != NULL + && eh->elf.plt.offset != (bfd_vma) -1) + { + for (s = eh->reloc_entries; s != NULL; s = s->next) + if (s->count == 0) + s->section->_raw_size -= sizeof (Elf32_External_Rela); + } +#endif + +#if RELATIVE_DYNAMIC_RELOCS + /* 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 (eh->elf.dynindx == -1 + || ((eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 + && !is_absolute_reloc (r_type) + && info->symbolic)) + { + for (s = eh->reloc_entries; s != NULL; s = s->next) + s->section->_raw_size -= s->count * sizeof (Elf32_External_Rela); + } +#endif + + return true; +} +#endif + +/* 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. */ + +static boolean +clobber_millicode_symbols (h, info) + struct elf_link_hash_entry *h; + struct bfd_link_info *info; +{ + /* Note! We only want to remove these from the dynamic symbol + table. Therefore we do not set ELF_LINK_FORCED_LOCAL. */ + if (h->type == STT_PARISC_MILLI) + elf32_hppa_hide_symbol(info, h); + return true; +} + +/* Set the sizes of the dynamic sections. */ + +static boolean +elf32_hppa_size_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + struct elf32_hppa_link_hash_table *hplink; + bfd *dynobj; + asection *s; + boolean relocs; + boolean reltext; + + hplink = hppa_link_hash_table (info); + dynobj = hplink->root.dynobj; + BFD_ASSERT (dynobj != NULL); + + if (hplink->root.dynamic_sections_created) + { + const char *funcname; + bfd *i; + + /* Set the contents of the .interp section to the interpreter. */ + if (! info->shared) + { + s = bfd_get_section_by_name (dynobj, ".interp"); + BFD_ASSERT (s != NULL); + s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; + s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; + } + + /* Force millicode symbols local. */ + elf_link_hash_traverse (&hplink->root, + clobber_millicode_symbols, + info); + + /* DT_INIT and DT_FINI need a .plt entry. Make sure they have + one. */ + funcname = info->init_function; + while (1) + { + if (funcname != NULL) + { + struct elf_link_hash_entry *h; + + h = elf_link_hash_lookup (&hplink->root, + funcname, + false, false, false); + if (h != NULL + && (h->elf_link_hash_flags & (ELF_LINK_HASH_REF_REGULAR + | ELF_LINK_HASH_DEF_REGULAR))) + { + if (h->plt.refcount <= 0) + { + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + + /* Make an entry in the .plt section. We know + the function doesn't have a plabel by the + refcount. */ + s = hplink->splt; + h->plt.offset = s->_raw_size; + s->_raw_size += PLT_ENTRY_SIZE; + + /* Make sure this symbol is output as a dynamic + symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + + /* Make an entry for the reloc too. */ + s = hplink->srelplt; + s->_raw_size += sizeof (Elf32_External_Rela); + } + + ((struct elf32_hppa_link_hash_entry *) h)->plt_abs = 1; + } + } + if (funcname == info->fini_function) + break; + funcname = info->fini_function; + } + + /* Set up .plt offsets for local plabels. */ + for (i = info->input_bfds; i; i = i->link_next) + { + bfd_signed_vma *local_plt; + bfd_signed_vma *end_local_plt; + bfd_size_type locsymcount; + Elf_Internal_Shdr *symtab_hdr; + + local_plt = elf_local_got_refcounts (i); + if (!local_plt) + continue; + + symtab_hdr = &elf_tdata (i)->symtab_hdr; + locsymcount = symtab_hdr->sh_info; + local_plt += locsymcount; + end_local_plt = local_plt + locsymcount; + + for (; local_plt < end_local_plt; ++local_plt) + { + if (*local_plt > 0) + { + s = hplink->splt; + *local_plt = s->_raw_size; + s->_raw_size += PLT_ENTRY_SIZE; + if (info->shared) + hplink->srelplt->_raw_size += sizeof (Elf32_External_Rela); + } + else + *local_plt = (bfd_vma) -1; + } + } + } + else + { + /* Run through the function symbols, looking for any that are + PIC, and allocate space for the necessary .plt entries so + that %r19 will be set up. */ + if (! info->shared) + elf_link_hash_traverse (&hplink->root, + hppa_handle_PIC_calls, + info); + + /* We may have created entries in the .rela.got section. + However, if we are not creating the dynamic sections, we will + not actually use these entries. Reset the size of .rela.got, + which will cause it to get stripped from the output file + below. */ + hplink->srelgot->_raw_size = 0; + } + +#if ((! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT) \ + || RELATIVE_DYNAMIC_RELOCS) + /* If this is a -Bsymbolic shared link, then we need to discard all + relocs against symbols defined in a regular object. We also need + to lose relocs we've allocated for long branch stubs if we know + we won't be generating a stub. */ + if (info->shared) + elf_link_hash_traverse (&hplink->root, + hppa_discard_copies, + info); +#endif + + /* The check_relocs and adjust_dynamic_symbol entry points have + determined the sizes of the various dynamic sections. Allocate + memory for them. */ + relocs = false; + reltext = false; + for (s = dynobj->sections; s != NULL; s = s->next) + { + const char *name; + + if ((s->flags & SEC_LINKER_CREATED) == 0) + continue; + + /* It's OK to base decisions on the section name, because none + of the dynobj section names depend upon the input files. */ + name = bfd_get_section_name (dynobj, s); + + if (strncmp (name, ".rela", 5) == 0) + { + if (s->_raw_size != 0) + { + asection *target; + const char *outname; + + /* Remember whether there are any reloc sections other + than .rela.plt. */ + if (strcmp (name+5, ".plt") != 0) + 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 if (strcmp (name, ".plt") == 0) + { + if (hplink->need_plt_stub) + { + /* 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; + } + } + else if (strcmp (name, ".got") == 0) + ; + else + { + /* It's not one of our sections, so don't allocate space. */ + continue; + } + + if (s->_raw_size == 0) + { + /* If we don't need this section, strip it from the + output file. This is mostly to handle .rela.bss and + .rela.plt. We must create both sections in + create_dynamic_sections, because they must be created + before the linker maps input sections to output + sections. The linker does that before + adjust_dynamic_symbol is called, and it is that + function which decides whether anything needs to go + into these sections. */ + _bfd_strip_section_from_output (info, s); + continue; + } + + /* Allocate memory for the section contents. Zero it, because + we may not fill in all the reloc sections. */ + s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); + if (s->contents == NULL && s->_raw_size != 0) + return false; + } + + if (hplink->root.dynamic_sections_created) + { + /* Like IA-64 and HPPA64, always create a DT_PLTGOT. It + actually has nothing to do with the PLT, it is how we + communicate the LTP value of a load module to the dynamic + linker. */ + if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0)) + return false; + + /* Add some entries to the .dynamic section. We fill in the + values later, in elf32_hppa_finish_dynamic_sections, but we + must add the entries now so that we get the correct size for + the .dynamic section. The DT_DEBUG entry is filled in by the + dynamic linker and used by the debugger. */ + if (! info->shared) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0)) + return false; + } + + if (hplink->srelplt->_raw_size != 0) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0) + || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA) + || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0)) + return false; + } + + if (relocs) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0) + || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0) + || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT, + sizeof (Elf32_External_Rela))) + return false; + } + + if (reltext) + { + if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0)) + return false; + info->flags |= DF_TEXTREL; + } + } + + return true; +} + +/* External entry points for sizing and building linker stubs. */ + +/* Determine and set the size of the stub section for a final link. + + The basic idea here is to examine all the relocations looking for + PC-relative calls to a target that is unreachable with a "bl" + instruction. */ + +boolean +elf32_hppa_size_stubs (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)); +{ + 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; + + 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; + } + + /* 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; + } + } + + hplink->stub_group + = (struct map_stub *) bfd_zmalloc (sizeof (struct map_stub) * (top_id + 1)); + if (hplink->stub_group == NULL) + return false; + + /* Make a list of input sections for each output section included in + the link. + + 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) + { + if (top_index < section->index) + top_index = section->index; + } + + input_list + = (asection **) bfd_malloc (sizeof (asection *) * (top_index + 1)); + 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; + } + + /* 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; + } + } + } + } + + /* 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 + { + 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; + } + } + 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. */ + all_local_syms + = (Elf_Internal_Sym **) bfd_zmalloc (sizeof (Elf_Internal_Sym *) + * bfd_count); + 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++) + { + Elf_Internal_Shdr *symtab_hdr; + Elf_Internal_Sym *isym; + Elf32_External_Sym *ext_syms, *esym, *end_sy; + + /* 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. */ + local_syms = (Elf_Internal_Sym *) + bfd_malloc (symtab_hdr->sh_info * sizeof (Elf_Internal_Sym)); + if (local_syms == NULL) + { + goto error_ret_free_local; + } + all_local_syms[bfd_indx] = local_syms; + ext_syms = (Elf32_External_Sym *) + bfd_malloc (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)); + if (ext_syms == NULL) + { + goto error_ret_free_local; + } + + if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 + || (bfd_read (ext_syms, 1, + (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)), + input_bfd) + != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym)))) + { + 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 (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); + } + } + } + } + } + + 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. */ + external_relocs + = ((Elf32_External_Rela *) + bfd_malloc (section->reloc_count + * sizeof (Elf32_External_Rela))); + if (external_relocs == NULL) + { + goto error_ret_free_local; + } + + /* Likewise for the internal relocations. */ + internal_relocs = ((Elf_Internal_Rela *) + bfd_malloc (section->reloc_count + * sizeof (Elf_Internal_Rela))); + if (internal_relocs == NULL) + { + free (external_relocs); + goto error_ret_free_local; + } + + /* Read in the external relocs. */ + input_rel_hdr = &elf_section_data (section)->rel_hdr; + if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 + || bfd_read (external_relocs, 1, + input_rel_hdr->sh_size, + input_bfd) != input_rel_hdr->sh_size) + { + free (external_relocs); + error_ret_free_internal: + free (internal_relocs); + goto error_ret_free_local; + } + + /* Swap in the relocs. */ + erela = external_relocs; + erelaend = erela + section->reloc_count; + irela = internal_relocs; + for (; erela < erelaend; erela++, irela++) + bfd_elf32_swap_reloca_in (input_bfd, erela, irela); + + /* We're done with the external relocs, free them. */ + free (external_relocs); + + /* Now examine each relocation. */ + irela = internal_relocs; + irelaend = irela + section->reloc_count; + for (; irela < irelaend; irela++) + { + unsigned int r_type, r_indx; + enum elf32_hppa_stub_type stub_type; + struct elf32_hppa_stub_hash_entry *stub_entry; + asection *sym_sec; + bfd_vma sym_value; + bfd_vma destination; + struct elf32_hppa_link_hash_entry *hash; + char *stub_name; + 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]); + + while (hash->elf.root.type == bfd_link_hash_indirect + || hash->elf.root.type == bfd_link_hash_warning) + hash = ((struct elf32_hppa_link_hash_entry *) + hash->elf.root.u.i.link); + + if (hash->elf.root.type == bfd_link_hash_defined + || hash->elf.root.type == bfd_link_hash_defweak) + { + sym_sec = hash->elf.root.u.def.section; + sym_value = hash->elf.root.u.def.value; + if (sym_sec->output_section != NULL) + destination = (sym_value + irela->r_addend + + sym_sec->output_offset + + sym_sec->output_section->vma); + } + else if (hash->elf.root.type == bfd_link_hash_undefweak) + { + if (! info->shared) + continue; + } + else if (hash->elf.root.type == bfd_link_hash_undefined) + { + if (! (info->shared + && !info->no_undefined + && (ELF_ST_VISIBILITY (hash->elf.other) + == STV_DEFAULT))) + continue; + } + else + { + bfd_set_error (bfd_error_bad_value); + goto error_ret_free_internal; + } + } + + /* Determine what (if any) linker stub is needed. */ + stub_type = hppa_type_of_stub (section, irela, hash, + destination); + if (stub_type == hppa_stub_none) + continue; + + /* Support for grouping stub sections. */ + id_sec = hplink->stub_group[section->id].link_sec; + + /* 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; + + stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, + stub_name, + false, false); + if (stub_entry != NULL) + { + /* The proper stub has already been created. */ + free (stub_name); + continue; + } + + stub_entry = hppa_add_stub (stub_name, section, hplink); + if (stub_entry == NULL) + { + free (stub_name); + goto error_ret_free_local; + } + + stub_entry->target_value = sym_value; + stub_entry->target_section = sym_sec; + stub_entry->stub_type = stub_type; + if (info->shared) + { + if (stub_type == hppa_stub_import) + stub_entry->stub_type = hppa_stub_import_shared; + else if (stub_type == hppa_stub_long_branch + && (LONG_BRANCH_PIC_IN_SHLIB || hash == NULL)) + stub_entry->stub_type = hppa_stub_long_branch_shared; + } + stub_entry->h = hash; + stub_changed = 1; + } + + /* We're done with the internal relocs, free them. */ + free (internal_relocs); + } + } + + if (!stub_changed) + break; + + /* OK, we've added some stubs. Find out the new size of the + stub sections. */ + 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 + { + int i; + + 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; + } + } + } +#endif + + bfd_hash_traverse (&hplink->stub_hash_table, + hppa_size_one_stub, + hplink); + + /* Ask the linker to do its stuff. */ + (*hplink->layout_sections_again) (); + stub_changed = 0; + } + + ret = 1; + + 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 ret; +} + +/* For a final link, this function is called after we have sized the + stubs to provide a value for __gp. */ + +boolean +elf32_hppa_set_gp (abfd, info) + bfd *abfd; + struct bfd_link_info *info; +{ + struct 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) + { + 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) + { + gp_val = sec->_raw_size; + if (gp_val > 0x2000 + || (hplink->sgot && hplink->sgot->_raw_size > 0x2000)) + { + gp_val = 0x2000; + } + } + 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 + { + /* No .plt or .got. Who cares what the LTP is? */ + sec = bfd_get_section_by_name (abfd, ".data"); + } + } + } + + if (sec != NULL) + gp_val += sec->output_section->vma + sec->output_offset; + + elf_gp (abfd) = gp_val; + return true; +} + +/* Build all the stubs associated with the current output file. The + stubs are kept in a hash table attached to the main linker hash + table. We also set up the .plt entries for statically linked PIC + functions here. This function is called via hppaelf_finish in the + linker. */ + +boolean +elf32_hppa_build_stubs (info) + struct bfd_link_info *info; +{ + asection *stub_sec; + struct bfd_hash_table *table; + struct elf32_hppa_link_hash_table *hplink; + + hplink = hppa_link_hash_table (info); + + for (stub_sec = hplink->stub_bfd->sections; + stub_sec != NULL; + stub_sec = stub_sec->next) + { + size_t 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; + } + + /* Build the stubs as directed by the stub hash table. */ + table = &hplink->stub_hash_table; + bfd_hash_traverse (table, hppa_build_one_stub, info); + + return true; +} + +/* Perform a relocation as part of a final link. */ + +static bfd_reloc_status_type +final_link_relocate (input_section, contents, rel, value, 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 insn; + unsigned int r_type = ELF32_R_TYPE (rel->r_info); + reloc_howto_type *howto = elf_hppa_howto_table + r_type; + int r_format = howto->bitsize; + enum hppa_reloc_field_selector_type_alt r_field; + bfd *input_bfd = input_section->owner; + bfd_vma offset = rel->r_offset; + bfd_vma max_branch_offset = 0; + bfd_byte *hit_data = contents + offset; + bfd_signed_vma addend = rel->r_addend; + bfd_vma location; + struct elf32_hppa_stub_hash_entry *stub_entry = NULL; + int val; + + if (r_type == R_PARISC_NONE) + return bfd_reloc_ok; + + insn = bfd_get_32 (input_bfd, hit_data); + + /* Find out where we are and where we're going. */ + location = (offset + + input_section->output_offset + + input_section->output_section->vma); + + switch (r_type) + { + case R_PARISC_PCREL12F: + case R_PARISC_PCREL17F: + case R_PARISC_PCREL22F: + /* If this is a call to a function defined in another dynamic + library, or if it is a call to a PIC function in the same + object, 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->pic_call + || (h->elf.root.type == bfd_link_hash_defweak + && h->elf.dynindx != -1 + && h->elf.plt.offset != (bfd_vma) -1)))) + { + 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. Make undefined weak + branches go nowhere. */ + value = location; + addend = 0; + } + else + return bfd_reloc_notsupported; + } + /* Fall thru. */ + + case R_PARISC_PCREL21L: + case R_PARISC_PCREL17C: + case R_PARISC_PCREL17R: + case R_PARISC_PCREL14R: + case R_PARISC_PCREL14F: + /* Make it a pc relative offset. */ + value -= location; + addend -= 8; + break; + + case R_PARISC_DPREL21L: + case R_PARISC_DPREL14R: + case R_PARISC_DPREL14F: + /* For all the DP relative relocations, we need to examine the symbol's + section. If it's a code section, then "data pointer relative" makes + no sense. In that case we don't adjust the "value", and for 21 bit + addil instructions, we change the source addend register from %dp to + %r0. This situation commonly arises when a variable's "constness" + is declared differently from the way the variable is defined. For + instance: "extern int foo" with foo defined as "const int foo". */ + if (sym_sec == NULL) + break; + if ((sym_sec->flags & SEC_CODE) != 0) + { + if ((insn & ((0x3f << 26) | (0x1f << 21))) + == (((int) OP_ADDIL << 26) | (27 << 21))) + { + insn &= ~ (0x1f << 21); +#if 1 /* debug them. */ + (*_bfd_error_handler) + (_("%s(%s+0x%lx): fixing %s"), + bfd_get_filename (input_bfd), + input_section->name, + (long) rel->r_offset, + howto->name); +#endif + } + /* Now try to make things easy for the dynamic linker. */ + + break; + } + /* Fall thru. */ + + case R_PARISC_DLTIND21L: + case R_PARISC_DLTIND14R: + case R_PARISC_DLTIND14F: + value -= elf_gp (input_section->output_section->owner); + break; + + default: + break; + } + + switch (r_type) + { + case R_PARISC_DIR32: + case R_PARISC_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) + { + max_branch_offset = (1 << (12-1)) << 2; + } + else + { + max_branch_offset = (1 << (22-1)) << 2; + } + + /* sym_sec is NULL on undefined weak syms or when shared on + undefined syms. We've already checked for a stub for the + shared undefined case. */ + if (sym_sec == NULL) + break; + + /* If the branch is out of reach, then redirect the + call to the local stub for this function. */ + if (value + addend + max_branch_offset >= 2*max_branch_offset) + { + stub_entry = hppa_get_stub_entry (input_section, sym_sec, + h, rel, 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; + + /* Something we don't know how to handle. */ + default: + return bfd_reloc_notsupported; + } + + /* Make sure we can reach the stub. */ + if (max_branch_offset != 0 + && value + addend + max_branch_offset >= 2*max_branch_offset) + { + (*_bfd_error_handler) + (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), + bfd_get_filename (input_bfd), + input_section->name, + (long) rel->r_offset, + stub_entry->root.string); + return bfd_reloc_notsupported; + } + + val = hppa_field_adjust (value, addend, r_field); + + switch (r_type) + { + case R_PARISC_PCREL12F: + case R_PARISC_PCREL17C: + case R_PARISC_PCREL17F: + case R_PARISC_PCREL17R: + case R_PARISC_PCREL22F: + case R_PARISC_DIR17F: + case R_PARISC_DIR17R: + /* This is a branch. Divide the offset by four. + Note that we need to decide whether it's a branch or + otherwise by inspecting the reloc. Inspecting insn won't + work as insn might be from a .word directive. */ + val >>= 2; + break; + + default: + break; + } + + insn = hppa_rebuild_insn (insn, val, r_format); + + /* Update the instruction word. */ + bfd_put_32 (input_bfd, (bfd_vma) insn, hit_data); + return bfd_reloc_ok; +} + +/* Relocate an HPPA ELF section. */ + +static boolean +elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section, + contents, relocs, local_syms, local_sections) + bfd *output_bfd; + struct bfd_link_info *info; + bfd *input_bfd; + asection *input_section; + bfd_byte *contents; + Elf_Internal_Rela *relocs; + Elf_Internal_Sym *local_syms; + asection **local_sections; +{ + bfd *dynobj; + bfd_vma *local_got_offsets; + struct elf32_hppa_link_hash_table *hplink; + Elf_Internal_Shdr *symtab_hdr; + Elf_Internal_Rela *rel; + Elf_Internal_Rela *relend; + asection *sreloc; + + symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + + 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; + + r_type = ELF32_R_TYPE (rel->r_info); + if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) + { + bfd_set_error (bfd_error_bad_value); + return false; + } + if (r_type == (unsigned int) R_PARISC_GNU_VTENTRY + || r_type == (unsigned int) R_PARISC_GNU_VTINHERIT) + continue; + + r_symndx = ELF32_R_SYM (rel->r_info); + + if (info->relocateable) + { + /* This is a relocateable link. We don't have to change + anything, unless the reloc is against a section symbol, + in which case we have to adjust according to where the + section symbol winds up in the output section. */ + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) + { + sym_sec = local_sections[r_symndx]; + rel->r_addend += sym_sec->output_offset; + } + } + continue; + } + + /* This is a final link. */ + h = NULL; + sym = NULL; + sym_sec = NULL; + if (r_symndx < symtab_hdr->sh_info) + { + /* This is a local symbol, h defaults to NULL. */ + sym = local_syms + r_symndx; + sym_sec = local_sections[r_symndx]; + relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION + ? 0 : sym->st_value) + + sym_sec->output_offset + + sym_sec->output_section->vma); + } + else + { + int indx; + + /* It's a global; Find its entry in the link hash. */ + indx = r_symndx - symtab_hdr->sh_info; + h = ((struct elf32_hppa_link_hash_entry *) + elf_sym_hashes (input_bfd)[indx]); + while (h->elf.root.type == bfd_link_hash_indirect + || h->elf.root.type == bfd_link_hash_warning) + h = (struct elf32_hppa_link_hash_entry *) h->elf.root.u.i.link; + + relocation = 0; + if (h->elf.root.type == bfd_link_hash_defined + || h->elf.root.type == bfd_link_hash_defweak) + { + sym_sec = h->elf.root.u.def.section; + /* If sym_sec->output_section is NULL, then it's a + symbol defined in a shared library. */ + if (sym_sec->output_section != NULL) + relocation = (h->elf.root.u.def.value + + sym_sec->output_offset + + sym_sec->output_section->vma); + } + else if (h->elf.root.type == bfd_link_hash_undefweak) + ; + else if (info->shared && !info->no_undefined + && ELF_ST_VISIBILITY (h->elf.other) == STV_DEFAULT) + { + if (info->symbolic) + if (!((*info->callbacks->undefined_symbol) + (info, h->elf.root.root.string, input_bfd, + input_section, rel->r_offset, false))) + return false; + } + else + { + if (!((*info->callbacks->undefined_symbol) + (info, h->elf.root.root.string, input_bfd, + input_section, rel->r_offset, true))) + return false; + } + } + + /* Do any required modifications to the relocation value, and + determine what types of dynamic info we need to output, if + any. */ + 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) + { + bfd_vma off; + + off = h->elf.got.offset; + BFD_ASSERT (off != (bfd_vma) -1); + + if (! hplink->root.dynamic_sections_created + || (info->shared + && (info->symbolic || h->elf.dynindx == -1) + && (h->elf.elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) != 0)) + { + /* This is actually a static link, or it is a + -Bsymbolic link and the symbol is defined + locally, or the symbol was forced to be local + because of a version file. We must initialize + this entry in the global offset table. Since the + offset must always be a multiple of 4, we use the + least significant bit to record whether we have + initialized it already. + + When doing a dynamic link, we create a .rela.got + relocation entry to initialize the value. This + is done in the finish_dynamic_symbol routine. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_32 (output_bfd, relocation, + hplink->sgot->contents + off); + h->elf.got.offset |= 1; + } + } + + relocation = off; + } + else + { + /* Local symbol case. */ + bfd_vma off; + + BFD_ASSERT (local_got_offsets != NULL + && local_got_offsets[r_symndx] != (bfd_vma) -1); + + off = local_got_offsets[r_symndx]; + + /* The offset must always be a multiple of 4. We use + the least significant bit to record whether we have + already generated the necessary reloc. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_32 (output_bfd, relocation, + hplink->sgot->contents + off); + + if (info->shared) + { + /* Output a dynamic *ABS* 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; + } + + local_got_offsets[r_symndx] |= 1; + } + + relocation = off; + } + + /* Add the base of the GOT to the relocation value. */ + relocation += (hplink->sgot->output_offset + + hplink->sgot->output_section->vma); + break; + + case R_PARISC_PLABEL14R: + case R_PARISC_PLABEL21L: + case R_PARISC_PLABEL32: + if (hplink->root.dynamic_sections_created) + { + bfd_vma off; + + /* If we have a global symbol with a PLT slot, then + redirect this relocation to it. */ + if (h != NULL) + { + off = h->elf.plt.offset; + } + else + { + int indx; + + indx = r_symndx + symtab_hdr->sh_info; + off = local_got_offsets[indx]; + + /* 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; + } + + local_got_offsets[indx] |= 1; + } + } + + BFD_ASSERT (off < (bfd_vma) -2); + + /* 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 + hppa_discard_copies. ie. We need exactly the same + condition as in check_relocs, with some extra conditions + (dynindx test in this case) to cater for relocs removed + by hppa_discard_copies. */ + if ((input_section->flags & SEC_ALLOC) != 0 + && info->shared +#if RELATIVE_DYNAMIC_RELOCS + && (is_absolute_reloc (r_type) + || ((!info->symbolic + || (h != NULL + && ((h->elf.elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0 + || h->elf.root.type == bfd_link_hash_defweak))) + && (h == NULL || h->elf.dynindx != -1))) +#endif + ) + { + Elf_Internal_Rela outrel; + boolean skip; + + /* When generating a shared object, these relocations + are copied into the output file to be resolved at run + time. */ + + 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); + BFD_ASSERT (sreloc != NULL); + } + + outrel.r_offset = rel->r_offset; + outrel.r_addend = rel->r_addend; + skip = false; + if (elf_section_data (input_section)->stab_info != NULL) + { + bfd_vma off; + + 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 + || !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); + } + + bfd_elf32_swap_reloca_out (output_bfd, &outrel, + ((Elf32_External_Rela *) + sreloc->contents + + sreloc->reloc_count)); + ++sreloc->reloc_count; + } + break; + + default: + break; + } + + r = final_link_relocate (input_section, contents, rel, relocation, + hplink, sym_sec, h); + + if (r == bfd_reloc_ok) + continue; + + if (h != NULL) + sym_name = h->elf.root.root.string; + else + { + sym_name = bfd_elf_string_from_elf_section (input_bfd, + symtab_hdr->sh_link, + sym->st_name); + if (sym_name == NULL) + return false; + if (*sym_name == '\0') + sym_name = bfd_section_name (input_bfd, sym_sec); + } + + howto = elf_hppa_howto_table + r_type; + + 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; + } + } + + return true; +} + +/* Finish up dynamic symbol handling. We set the contents of various + dynamic sections here. */ + +static boolean +elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym) + bfd *output_bfd; + struct bfd_link_info *info; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; +{ + struct elf32_hppa_link_hash_table *hplink; + bfd *dynobj; + + hplink = hppa_link_hash_table (info); + dynobj = hplink->root.dynobj; + + if (h->plt.offset != (bfd_vma) -1) + { + bfd_vma value; + + /* This symbol has an entry in the procedure linkage table. Set + it up. + + The format of a plt entry is + + <__gp> + */ + value = 0; + if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + value = h->root.u.def.value; + if (h->root.u.def.section->output_section != NULL) + value += (h->root.u.def.section->output_offset + + h->root.u.def.section->output_section->vma); + } + + if (! ((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) + { + /* To support lazy linking, the function pointer is + initialised to point to a special stub stored at the + end of the .plt. This is only done for plt entries + with a non-*ABS* 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; + } + + 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++; + } + + 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); + } + + 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 (h->got.offset != (bfd_vma) -1) + { + Elf_Internal_Rela rel; + + /* This symbol has an entry in the global offset table. Set it + up. */ + + rel.r_offset = ((h->got.offset &~ (bfd_vma) 1) + + hplink->sgot->output_offset + + hplink->sgot->output_section->vma); + + /* If this is a static link, or it is a -Bsymbolic link and the + symbol is defined locally or was forced to be local because + of a version file, we just want to emit a RELATIVE reloc. + The entry in the global offset table will already have been + initialized in the relocate_section function. */ + if (! hplink->root.dynamic_sections_created + || (info->shared + && (info->symbolic || h->dynindx == -1) + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) + { + rel.r_info = ELF32_R_INFO (0, R_PARISC_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 + { + BFD_ASSERT((h->got.offset & 1) == 0); + bfd_put_32 (output_bfd, (bfd_vma) 0, + hplink->sgot->contents + h->got.offset); + rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32); + rel.r_addend = 0; + } + + bfd_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. */ + + BFD_ASSERT (h->dynindx != -1 + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak)); + + s = hplink->srelbss; + + rel.r_offset = (h->root.u.def.value + + h->root.u.def.section->output_offset + + h->root.u.def.section->output_section->vma); + rel.r_addend = 0; + rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_COPY); + bfd_elf32_swap_reloca_out (output_bfd, &rel, + ((Elf32_External_Rela *) s->contents + + s->reloc_count)); + ++s->reloc_count; + } + + /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ + if (h->root.root.string[0] == '_' + && (strcmp (h->root.root.string, "_DYNAMIC") == 0 + || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)) + { + sym->st_shndx = SHN_ABS; + } + + return true; +} + +/* Finish up the dynamic sections. */ + +static boolean +elf32_hppa_finish_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; +{ + bfd *dynobj; + struct elf32_hppa_link_hash_table *hplink; + asection *sdyn; + + hplink = hppa_link_hash_table (info); + dynobj = hplink->root.dynobj; + + sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); + + if (hplink->root.dynamic_sections_created) + { + Elf32_External_Dyn *dyncon, *dynconend; + + BFD_ASSERT (sdyn != NULL); + + dyncon = (Elf32_External_Dyn *) sdyn->contents; + dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); + for (; dyncon < dynconend; dyncon++) + { + Elf_Internal_Dyn dyn; + asection *s; + + bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); + + switch (dyn.d_tag) + { + default: + break; + + case DT_PLTGOT: + /* Use PLTGOT to set the GOT register. */ + dyn.d_un.d_ptr = elf_gp (output_bfd); + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_JMPREL: + s = hplink->srelplt; + dyn.d_un.d_ptr = s->output_section->vma + s->output_offset; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_PLTRELSZ: + s = hplink->srelplt; + if (s->_cooked_size != 0) + dyn.d_un.d_val = s->_cooked_size; + else + dyn.d_un.d_val = s->_raw_size; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_INIT: + case DT_FINI: + { + struct elf_link_hash_entry *h; + const char *funcname; + + if (dyn.d_tag == DT_INIT) + funcname = info->init_function; + else + funcname = info->fini_function; + + h = elf_link_hash_lookup (&hplink->root, funcname, + false, false, false); + + /* This is a function pointer. The magic +2 offset + signals to $$dyncall that the function pointer + is in the .plt and thus has a gp pointer too. */ + dyn.d_un.d_ptr = (h->plt.offset + + hplink->splt->output_offset + + hplink->splt->output_section->vma + + 2); + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + } + } + } + } + + if (hplink->sgot->_raw_size != 0) + { + /* 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; } - /* Set the size of the stub section to zero since we're never going - to create them. Avoids losing when we try to get its contents - too. */ - bfd_set_section_size (stub_bfd, stub_sec, 0); - return false; + + if (hplink->splt->_raw_size != 0) + { + /* Set plt entry size. */ + elf_section_data (hplink->splt->output_section) + ->this_hdr.sh_entsize = PLT_ENTRY_SIZE; + + 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 true; +} + +/* Called when writing out an object file to decide the type of a + symbol. */ +static int +elf32_hppa_elf_get_symbol_type (elf_sym, type) + Elf_Internal_Sym *elf_sym; + int type; +{ + if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) + return STT_PARISC_MILLI; + else + return type; } /* Misc BFD support code. */ -#define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup -#define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name -#define elf_info_to_howto elf_hppa_info_to_howto -#define elf_info_to_howto_rel elf_hppa_info_to_howto_rel +#define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name +#define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup +#define elf_info_to_howto elf_hppa_info_to_howto +#define elf_info_to_howto_rel elf_hppa_info_to_howto_rel /* Stuff for the BFD linker. */ -#define elf_backend_relocate_section elf32_hppa_relocate_section -#define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook -#define bfd_elf32_bfd_link_hash_table_create \ - elf32_hppa_link_hash_table_create -#define elf_backend_fake_sections elf_hppa_fake_sections - +#define bfd_elf32_bfd_final_link _bfd_elf32_gc_common_final_link +#define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create +#define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook +#define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol +#define elf_backend_check_relocs elf32_hppa_check_relocs +#define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections +#define elf_backend_fake_sections elf_hppa_fake_sections +#define elf_backend_relocate_section elf32_hppa_relocate_section +#define elf_backend_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_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"