X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;ds=sidebyside;f=bfd%2Felf32-hppa.c;h=e2a7cc3e3851f3de52800d56a5c445adb1c62256;hb=8f615d07046056cd62e6916b1af80223df8641e8;hp=bcca2c5d7c30f42c584a3ae90762484fb6491f06;hpb=6e58a4e5db91941cf8c0845a8a8e7329a5b8281a;p=deliverable%2Fbinutils-gdb.git diff --git a/bfd/elf32-hppa.c b/bfd/elf32-hppa.c index bcca2c5d7c..e2a7cc3e38 100644 --- a/bfd/elf32-hppa.c +++ b/bfd/elf32-hppa.c @@ -1,11 +1,12 @@ /* BFD back-end for HP PA-RISC ELF files. - Copyright (C) 1990, 91, 92, 93, 94 Free Software Foundation, Inc. - - Written by + Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1999, 2000, 2001 + Free Software Foundation, Inc. + Original code by Center for Software Science Department of Computer Science University of Utah + Largely rewritten by Alan Modra This file is part of BFD, the Binary File Descriptor library. @@ -21,3339 +22,4458 @@ GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, write to the Free Software -Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */ +Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "bfd.h" #include "sysdep.h" #include "libbfd.h" -#include "obstack.h" -#include "bfdlink.h" -#include "libelf.h" - -/* Note there isn't much error handling code in here yet. Unexpected - conditions are handled by just calling abort. FIXME damnit! */ - -/* ELF32/HPPA relocation support - - This file contains ELF32/HPPA relocation support as specified - in the Stratus FTX/Golf Object File Format (SED-1762) dated - November 19, 1992. */ - -#include "elf32-hppa.h" +#include "elf-bfd.h" +#include "elf/hppa.h" #include "libhppa.h" -#include "aout/aout64.h" -#include "hppa_stubs.h" +#include "elf32-hppa.h" +#define ARCH_SIZE 32 +#include "elf-hppa.h" +#include "elf32-hppa.h" -/* The basic stub types supported. If/when shared libraries are - implemented some form of IMPORT and EXPORT stubs will be needed. */ -typedef enum +/* In order to gain some understanding of code in this file without + knowing all the intricate details of the linker, note the + following: + + Functions named elf32_hppa_* are called by external routines, other + functions are only called locally. elf32_hppa_* functions appear + in this file more or less in the order in which they are called + from external routines. eg. elf32_hppa_check_relocs is called + early in the link process, elf32_hppa_finish_dynamic_sections is + one of the last functions. */ + +/* We use two hash tables to hold information for linking PA ELF objects. + + The first is the elf32_hppa_link_hash_table which is derived + from the standard ELF linker hash table. We use this as a place to + attach other hash tables and static information. + + The second is the stub hash table which is derived from the + base BFD hash table. The stub hash table holds the information + necessary to build the linker stubs during a link. + + There are a number of different stubs generated by the linker. + + Long branch stub: + : ldil LR'X,%r1 + : be,n RR'X(%sr4,%r1) + + PIC long branch stub: + : b,l .+8,%r1 + : addil LR'X - ($PIC_pcrel$0 - 4),%r1 + : be,n RR'X - ($PIC_pcrel$0 - 8)(%sr4,%r1) + + Import stub to call shared library routine from normal object file + (single sub-space version) + : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point + : ldw RR'lt_ptr+ltoff(%r1),%r21 + : bv %r0(%r21) + : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. + + Import stub to call shared library routine from shared library + (single sub-space version) + : addil LR'ltoff,%r19 ; get procedure entry point + : ldw RR'ltoff(%r1),%r21 + : bv %r0(%r21) + : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value. + + Import stub to call shared library routine from normal object file + (multiple sub-space support) + : addil LR'lt_ptr+ltoff,%dp ; get procedure entry point + : ldw RR'lt_ptr+ltoff(%r1),%r21 + : ldw RR'lt_ptr+ltoff+4(%r1),%r19 ; get new dlt value. + : ldsid (%r21),%r1 + : mtsp %r1,%sr0 + : be 0(%sr0,%r21) ; branch to target + : stw %rp,-24(%sp) ; save rp + + Import stub to call shared library routine from shared library + (multiple sub-space support) + : addil LR'ltoff,%r19 ; get procedure entry point + : ldw RR'ltoff(%r1),%r21 + : ldw RR'ltoff+4(%r1),%r19 ; get new dlt value. + : ldsid (%r21),%r1 + : mtsp %r1,%sr0 + : be 0(%sr0,%r21) ; branch to target + : stw %rp,-24(%sp) ; save rp + + Export stub to return from shared lib routine (multiple sub-space support) + One of these is created for each exported procedure in a shared + library (and stored in the shared lib). Shared lib routines are + called via the first instruction in the export stub so that we can + do an inter-space return. Not required for single sub-space. + : bl,n X,%rp ; trap the return + : nop + : ldw -24(%sp),%rp ; restore the original rp + : ldsid (%rp),%r1 + : mtsp %r1,%sr0 + : be,n 0(%sr0,%rp) ; inter-space return */ + +#define PLT_ENTRY_SIZE 8 +#define PLABEL_PLT_ENTRY_SIZE PLT_ENTRY_SIZE +#define GOT_ENTRY_SIZE 4 +#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" + +static const bfd_byte plt_stub[] = { - HPPA_STUB_ILLEGAL, - HPPA_STUB_ARG_RELOC, - HPPA_STUB_LONG_CALL, -} hppa_stub_type; + 0x0e, 0x80, 0x10, 0x96, /* 1: ldw 0(%r20),%r22 */ + 0xea, 0xc0, 0xc0, 0x00, /* bv %r0(%r22) */ + 0x0e, 0x88, 0x10, 0x95, /* ldw 4(%r20),%r21 */ +#define PLT_STUB_ENTRY (3*4) + 0xea, 0x9f, 0x1f, 0xdd, /* b,l 1b,%r20 */ + 0xd6, 0x80, 0x1c, 0x1e, /* depi 0,31,2,%r20 */ + 0x00, 0xc0, 0xff, 0xee, /* 9: .word fixup_func */ + 0xde, 0xad, 0xbe, 0xef /* .word fixup_ltp */ +}; -/* This is a list of all the stubs for a particular BFD. */ +/* Section name for stubs is the associated section name plus this + string. */ +#define STUB_SUFFIX ".stub" + +/* Setting the following non-zero makes all long branch stubs + generated during a shared link of the PIC variety. This saves on + relocs, but costs one extra instruction per stub. */ +#ifndef LONG_BRANCH_PIC_IN_SHLIB +#define LONG_BRANCH_PIC_IN_SHLIB 1 +#endif + +/* Set this non-zero to use import stubs instead of long branch stubs + where a .plt entry exists for the symbol. This is a fairly useless + option as import stubs are bigger than PIC long branch stubs. */ +#ifndef LONG_BRANCH_VIA_PLT +#define LONG_BRANCH_VIA_PLT 0 +#endif + +/* We don't need to copy any PC- or GP-relative dynamic relocs into a + shared object's dynamic section. All the relocs of the limited + class we are interested in, are absolute. See check_relocs. */ +#ifndef IS_ABSOLUTE_RELOC +#define IS_ABSOLUTE_RELOC(r_type) 1 +#endif + +enum elf32_hppa_stub_type { + hppa_stub_long_branch, + hppa_stub_long_branch_shared, + hppa_stub_import, + hppa_stub_import_shared, + hppa_stub_export, + hppa_stub_none +}; -typedef struct elf32_hppa_stub_name_list_struct -{ - /* The symbol associated with this stub. */ - asymbol *sym; - /* Pointer to chain of all stub chains. */ - struct elf32_hppa_stub_description_struct *stub_desc; - /* Pointer to the stub contents (eg instructions). */ - int *stub_secp; - /* Size of this stub? (in what units? FIXME). */ - unsigned size; - /* Pointer to the next stub entry in the chain. */ - struct elf32_hppa_stub_name_list_struct *next; -} elf32_hppa_stub_name_list; - -/* This is a linked list in which each entry describes all the - linker stubs for a particular bfd. */ - -typedef struct elf32_hppa_stub_description_struct -{ - /* The next group of stubs. */ - struct elf32_hppa_stub_description_struct *next; - /* Used to identify this group of stubs as belonging - to a particular bfd. */ - bfd *this_bfd; - /* FIXME: The stub section for this group of stubs? Is - this redundant with stub_listP->sym->section? */ +struct elf32_hppa_stub_hash_entry { + + /* Base hash table entry structure. */ + struct bfd_hash_entry root; + + /* The stub section. */ asection *stub_sec; - /* FIXME: what the hell is this? */ - unsigned relocs_allocated_cnt; - /* The current real size of the stubs (in bytes?). */ - unsigned real_size; - /* How much space we have allocated for stubs (in bytes?). */ - unsigned allocated_size; - /* Pointer to the first available space for new stubs. */ - int *stub_secp; - /* Pointer to the beginning of the stubs. FIXME: Why an int * - above and a char * here? */ - char *stub_contents; - /* The list of stubs for this bfd. */ - elf32_hppa_stub_name_list *stub_listP; - /* I guess we just carry this around for fun. */ - struct bfd_link_info *link_info; -} elf32_hppa_stub_description; - -/* FIXME. */ -#define ARGUMENTS 0 -#define RETURN_VALUE 1 - -/* The various argument relocations that may be performed. - Note GRX,GRY really means ARGX,ARGY. */ -typedef enum -{ - /* No relocation. */ - NO_ARG_RELOC, - /* Relocate 32 bits from general to FP register. */ - R_TO_FR, - /* Relocate 64 bits from arg0,arg1 to FParg1. */ - R01_TO_FR, - /* Relocate 64 bits from arg2,arg3 to FParg3. */ - R23_TO_FR, - /* Relocate 32 bits from FP to general register. */ - FR_TO_R, - /* Relocate 64 bits from FParg1 to arg0,arg1. */ - FR_TO_R01, - /* Relocate 64 bits from FParg3 to arg2,arg3. */ - FR_TO_R23, - /* Death. */ - ARG_RELOC_ERR, -} arg_reloc_type; - -/* Where (what register type) is an argument comming from? */ -typedef enum -{ - /* Not in a register. */ - AR_NO, - /* In a general argument register. */ - AR_GR, - /* In right half of a FP argument register. */ - AR_FR, - /* In upper (left) half of a FP argument register. */ - AR_FU, - /* In general argument register pair 0 (arg0, arg1). */ - AR_DBL01, - /* In general argument register pair 1 (arg2, arg3). */ - AR_DBL23, -} arg_location; - -/* What is being relocated (eg which argument or the return value). */ -typedef enum -{ - ARG0, ARG1, ARG2, ARG3, RETVAL, -} arg_reloc_location; - -/* Horizontal represents callee's argument location information, vertical - represents caller's argument location information. Value at a particular - X, Y location represents what (if any) argument relocation needs to - be performed to make caller and callee agree. */ -static CONST arg_reloc_type mismatches[6][6] = -{ - {NO_ARG_RELOC, NO_ARG_RELOC, NO_ARG_RELOC, ARG_RELOC_ERR, - NO_ARG_RELOC, NO_ARG_RELOC}, - {NO_ARG_RELOC, NO_ARG_RELOC, R_TO_FR, ARG_RELOC_ERR, - R01_TO_FR, ARG_RELOC_ERR}, - {NO_ARG_RELOC, FR_TO_R, NO_ARG_RELOC, ARG_RELOC_ERR, - ARG_RELOC_ERR, ARG_RELOC_ERR}, - {ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR, - ARG_RELOC_ERR, ARG_RELOC_ERR}, - {NO_ARG_RELOC, FR_TO_R01, NO_ARG_RELOC, ARG_RELOC_ERR, - NO_ARG_RELOC, ARG_RELOC_ERR}, - {NO_ARG_RELOC, FR_TO_R23, NO_ARG_RELOC, ARG_RELOC_ERR, - ARG_RELOC_ERR, NO_ARG_RELOC}, + +#if ! LONG_BRANCH_PIC_IN_SHLIB + /* It's associated reloc section. */ + asection *reloc_sec; +#endif + + /* Offset within stub_sec of the beginning of this stub. */ + bfd_vma stub_offset; + + /* Given the symbol's value and its section we can determine its final + value when building the stubs (so the stub knows where to jump. */ + bfd_vma target_value; + asection *target_section; + + enum elf32_hppa_stub_type stub_type; + + /* The symbol table entry, if any, that this was derived from. */ + struct elf32_hppa_link_hash_entry *h; + + /* Where this stub is being called from, or, in the case of combined + stub sections, the first input section in the group. */ + asection *id_sec; }; -/* Likewise for the return value. */ -static CONST arg_reloc_type retval_mismatches[6][6] = -{ - {NO_ARG_RELOC, NO_ARG_RELOC, NO_ARG_RELOC, ARG_RELOC_ERR, - NO_ARG_RELOC, NO_ARG_RELOC}, - {NO_ARG_RELOC, NO_ARG_RELOC, FR_TO_R, ARG_RELOC_ERR, - FR_TO_R01, ARG_RELOC_ERR}, - {NO_ARG_RELOC, R_TO_FR, NO_ARG_RELOC, ARG_RELOC_ERR, - ARG_RELOC_ERR, ARG_RELOC_ERR}, - {ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR, ARG_RELOC_ERR, - ARG_RELOC_ERR, ARG_RELOC_ERR}, - {NO_ARG_RELOC, R01_TO_FR, NO_ARG_RELOC, ARG_RELOC_ERR, - NO_ARG_RELOC, ARG_RELOC_ERR}, - {NO_ARG_RELOC, R23_TO_FR, NO_ARG_RELOC, ARG_RELOC_ERR, - ARG_RELOC_ERR, NO_ARG_RELOC}, +struct elf32_hppa_link_hash_entry { + + struct elf_link_hash_entry elf; + + /* A pointer to the most recently used stub hash entry against this + symbol. */ + struct elf32_hppa_stub_hash_entry *stub_cache; + +#if ! LONG_BRANCH_PIC_IN_SHLIB + /* Used to track whether we have allocated space for a long branch + stub relocation for this symbol in the given section. */ + asection *stub_reloc_sec; +#endif + + /* Used to count relocations for delayed sizing of relocation + sections. */ + struct elf32_hppa_dyn_reloc_entry { + + /* Next relocation in the chain. */ + struct elf32_hppa_dyn_reloc_entry *next; + + /* The section in dynobj. */ + asection *section; + + /* Number of relocs copied in this section. */ + bfd_size_type count; + } *reloc_entries; + + /* Set during a static link if we detect a function is PIC. */ + unsigned int maybe_pic_call:1; + + /* Set if the only reason we need a .plt entry is for a non-PIC to + PIC function call. */ + unsigned int pic_call:1; + + /* Set if this symbol is used by a plabel reloc. */ + unsigned int plabel:1; + + /* Set if this symbol is an init or fini function and thus should + use an absolute reloc. */ + unsigned int plt_abs:1; }; -/* Used for index mapping in symbol-extension sections. */ -struct elf32_hppa_symextn_map_struct -{ - int old_index; - bfd *bfd; - asymbol *sym; - int new_index; +struct elf32_hppa_link_hash_table { + + /* The main hash table. */ + struct elf_link_hash_table root; + + /* The stub hash table. */ + struct bfd_hash_table stub_hash_table; + + /* Linker stub bfd. */ + bfd *stub_bfd; + + /* Linker call-backs. */ + asection * (*add_stub_section) PARAMS ((const char *, asection *)); + void (*layout_sections_again) PARAMS ((void)); + + /* Array to keep track of which stub sections have been created, and + information on stub grouping. */ + struct map_stub { + /* This is the section to which stubs in the group will be + attached. */ + asection *link_sec; + /* The stub section. */ + asection *stub_sec; +#if ! LONG_BRANCH_PIC_IN_SHLIB + /* The stub section's reloc section. */ + asection *reloc_sec; +#endif + } *stub_group; + + /* Short-cuts to get to dynamic linker sections. */ + asection *sgot; + asection *srelgot; + asection *splt; + asection *srelplt; + asection *sdynbss; + asection *srelbss; + + /* Used during a final link to store the base of the text and data + segments so that we can perform SEGREL relocations. */ + bfd_vma text_segment_base; + bfd_vma data_segment_base; + + /* Whether we support multiple sub-spaces for shared libs. */ + unsigned int multi_subspace:1; + + /* Flags set when PCREL12F and PCREL17F branches detected. Used to + select suitable defaults for the stub group size. */ + unsigned int has_12bit_branch:1; + unsigned int has_17bit_branch:1; + + /* Set if we need a .plt stub to support lazy dynamic linking. */ + unsigned int need_plt_stub:1; }; -static bfd_reloc_status_type hppa_elf_reloc - PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); +/* Various hash macros and functions. */ +#define hppa_link_hash_table(p) \ + ((struct elf32_hppa_link_hash_table *) ((p)->hash)) + +#define hppa_stub_hash_lookup(table, string, create, copy) \ + ((struct elf32_hppa_stub_hash_entry *) \ + bfd_hash_lookup ((table), (string), (create), (copy))) + +static struct bfd_hash_entry *stub_hash_newfunc + PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); + +static struct bfd_hash_entry *hppa_link_hash_newfunc + PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); + +static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create + PARAMS ((bfd *)); -static unsigned long hppa_elf_relocate_insn - PARAMS ((bfd *, asection *, unsigned long, unsigned long, long, - long, unsigned long, unsigned long, unsigned long)); +/* Stub handling functions. */ +static char *hppa_stub_name + PARAMS ((const asection *, const asection *, + const struct elf32_hppa_link_hash_entry *, + const Elf_Internal_Rela *)); -static void hppa_elf_relocate_unwind_table - PARAMS ((bfd *, PTR, unsigned long, long, long, - unsigned long, unsigned long)); +static struct elf32_hppa_stub_hash_entry *hppa_get_stub_entry + PARAMS ((const asection *, const asection *, + struct elf32_hppa_link_hash_entry *, + const Elf_Internal_Rela *, + struct elf32_hppa_link_hash_table *)); -static long get_symbol_value PARAMS ((asymbol *)); +static struct elf32_hppa_stub_hash_entry *hppa_add_stub + PARAMS ((const char *, asection *, struct elf32_hppa_link_hash_table *)); -static bfd_reloc_status_type hppa_elf_reloc - PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd*, char **)); +static enum elf32_hppa_stub_type hppa_type_of_stub + PARAMS ((asection *, const Elf_Internal_Rela *, + struct elf32_hppa_link_hash_entry *, bfd_vma)); -static CONST reloc_howto_type * elf_hppa_reloc_type_lookup - PARAMS ((bfd_arch_info_type *, bfd_reloc_code_real_type)); +static boolean hppa_build_one_stub + PARAMS ((struct bfd_hash_entry *, PTR)); -static symext_entryS elf32_hppa_get_sym_extn PARAMS ((bfd *, asymbol *, int)); +static boolean hppa_size_one_stub + PARAMS ((struct bfd_hash_entry *, PTR)); -static elf32_hppa_stub_description * find_stubs PARAMS ((bfd *, asection *)); +/* BFD and elf backend functions. */ +static boolean elf32_hppa_object_p PARAMS ((bfd *)); -static elf32_hppa_stub_description * new_stub - PARAMS ((bfd *, asection *, struct bfd_link_info *)); +static boolean elf32_hppa_add_symbol_hook + PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, + const char **, flagword *, asection **, bfd_vma *)); -static arg_reloc_type type_of_mismatch PARAMS ((int, int, int)); +static boolean elf32_hppa_create_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); -static elf32_hppa_stub_name_list * find_stub_by_name - PARAMS ((bfd *, asection *, char *)); +static boolean elf32_hppa_check_relocs + PARAMS ((bfd *, struct bfd_link_info *, + asection *, const Elf_Internal_Rela *)); -static elf32_hppa_stub_name_list * add_stub_by_name - PARAMS ((bfd *, asection *, asymbol *, struct bfd_link_info *)); +static asection *elf32_hppa_gc_mark_hook + PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, + struct elf_link_hash_entry *, Elf_Internal_Sym *)); -static void hppa_elf_stub_finish PARAMS ((bfd *)); +static boolean elf32_hppa_gc_sweep_hook + PARAMS ((bfd *, struct bfd_link_info *, + asection *, const Elf_Internal_Rela *)); -static void hppa_elf_stub_reloc - PARAMS ((elf32_hppa_stub_description *, bfd *, asymbol **, int, - elf32_hppa_reloc_type)); +static void elf32_hppa_hide_symbol + PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); -static int hppa_elf_arg_reloc_needed_p - PARAMS ((bfd *, arelent *, arg_reloc_type [5], symext_entryS)); +static boolean elf32_hppa_adjust_dynamic_symbol + PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); -static asymbol * hppa_elf_build_linker_stub - PARAMS ((bfd *, bfd *, struct bfd_link_info *, arelent *, - arg_reloc_type [5], int, unsigned *, hppa_stub_type)); +static boolean hppa_handle_PIC_calls + PARAMS ((struct elf_link_hash_entry *, PTR)); -static void hppa_elf_create_stub_sec - PARAMS ((bfd *, bfd *, asection **, struct bfd_link_info *)); +static boolean allocate_plt_and_got_and_discard_relocs + PARAMS ((struct elf_link_hash_entry *, PTR)); -static int hppa_elf_long_branch_needed_p - PARAMS ((bfd *, asection *, arelent *, asymbol *, unsigned)); +static boolean clobber_millicode_symbols + PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *)); -static boolean hppa_elf_set_section_contents - PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type)); +static boolean elf32_hppa_size_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); -static void elf_info_to_howto - PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); +static boolean elf32_hppa_final_link + PARAMS ((bfd *, struct bfd_link_info *)); -static void elf32_hppa_backend_symbol_processing PARAMS ((bfd *, asymbol *)); +static void hppa_record_segment_addr + PARAMS ((bfd *, asection *, PTR)); -static boolean elf32_hppa_backend_section_processing - PARAMS ((bfd *, Elf32_Internal_Shdr *)); +static bfd_reloc_status_type final_link_relocate + PARAMS ((asection *, bfd_byte *, const Elf_Internal_Rela *, + bfd_vma, struct elf32_hppa_link_hash_table *, asection *, + struct elf32_hppa_link_hash_entry *)); -static boolean elf32_hppa_backend_symbol_table_processing - PARAMS ((bfd *, elf_symbol_type *, int)); +static boolean elf32_hppa_relocate_section + PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, + bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); -static boolean elf32_hppa_backend_section_from_shdr - PARAMS ((bfd *, Elf32_Internal_Shdr *, char *)); +static int hppa_unwind_entry_compare + PARAMS ((const PTR, const PTR)); -static boolean elf32_hppa_backend_fake_sections - PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); +static boolean elf32_hppa_finish_dynamic_symbol + PARAMS ((bfd *, struct bfd_link_info *, + struct elf_link_hash_entry *, Elf_Internal_Sym *)); -static boolean elf32_hppa_backend_section_from_bfd_section - PARAMS ((bfd *, Elf32_Internal_Shdr *, asection *, int *)); +static boolean elf32_hppa_finish_dynamic_sections + PARAMS ((bfd *, struct bfd_link_info *)); -/* ELF/PA relocation howto entries. */ +static void elf32_hppa_post_process_headers + PARAMS ((bfd *, struct bfd_link_info *)); -static reloc_howto_type elf_hppa_howto_table[ELF_HOWTO_TABLE_SIZE] = +static int elf32_hppa_elf_get_symbol_type + PARAMS ((Elf_Internal_Sym *, int)); + +/* Assorted hash table functions. */ + +/* Initialize an entry in the stub hash table. */ + +static struct bfd_hash_entry * +stub_hash_newfunc (entry, table, string) + struct bfd_hash_entry *entry; + struct bfd_hash_table *table; + const char *string; { - {R_HPPA_NONE, 0, 3, 19, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_NONE"}, - {R_HPPA_32, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_32"}, - {R_HPPA_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_11"}, - {R_HPPA_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_14"}, - {R_HPPA_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_17"}, -{R_HPPA_L21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_L21"}, -{R_HPPA_R11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_R11"}, -{R_HPPA_R14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_R14"}, -{R_HPPA_R17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_R17"}, - {R_HPPA_LS21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LS21"}, - {R_HPPA_RS11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RS11"}, - {R_HPPA_RS14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RS14"}, - {R_HPPA_RS17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RS17"}, - {R_HPPA_LD21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LD21"}, - {R_HPPA_RD11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RD11"}, - {R_HPPA_RD14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RD14"}, - {R_HPPA_RD17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RD17"}, - {R_HPPA_LR21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LR21"}, - {R_HPPA_RR14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RR14"}, - {R_HPPA_RR17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_RR17"}, - {R_HPPA_GOTOFF_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_11"}, - {R_HPPA_GOTOFF_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_14"}, - {R_HPPA_GOTOFF_L21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_L21"}, - {R_HPPA_GOTOFF_R11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_R11"}, - {R_HPPA_GOTOFF_R14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_R14"}, - {R_HPPA_GOTOFF_LS21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_LS21"}, - {R_HPPA_GOTOFF_RS11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RS11"}, - {R_HPPA_GOTOFF_RS14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RS14"}, - {R_HPPA_GOTOFF_LD21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_LD21"}, - {R_HPPA_GOTOFF_RD11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RD11"}, - {R_HPPA_GOTOFF_RD14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RD14"}, - {R_HPPA_GOTOFF_LR21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_LR21"}, - {R_HPPA_GOTOFF_RR14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_GOTOFF_RR14"}, - {R_HPPA_ABS_CALL_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_11"}, - {R_HPPA_ABS_CALL_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_14"}, - {R_HPPA_ABS_CALL_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_17"}, - {R_HPPA_ABS_CALL_L21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_L21"}, - {R_HPPA_ABS_CALL_R11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_R11"}, - {R_HPPA_ABS_CALL_R14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_R14"}, - {R_HPPA_ABS_CALL_R17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_R17"}, - {R_HPPA_ABS_CALL_LS21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_LS21"}, - {R_HPPA_ABS_CALL_RS11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RS11"}, - {R_HPPA_ABS_CALL_RS14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RS14"}, - {R_HPPA_ABS_CALL_RS17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RS17"}, - {R_HPPA_ABS_CALL_LD21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_LD21"}, - {R_HPPA_ABS_CALL_RD11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RD11"}, - {R_HPPA_ABS_CALL_RD14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RD14"}, - {R_HPPA_ABS_CALL_RD17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RD17"}, - {R_HPPA_ABS_CALL_LR21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_LR21"}, - {R_HPPA_ABS_CALL_RR14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RR14"}, - {R_HPPA_ABS_CALL_RR17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ABS_CALL_RR17"}, - {R_HPPA_PCREL_CALL_11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_11"}, - {R_HPPA_PCREL_CALL_14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_14"}, - {R_HPPA_PCREL_CALL_17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_17"}, - {R_HPPA_PCREL_CALL_12, 0, 3, 12, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_12"}, - {R_HPPA_PCREL_CALL_L21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_L21"}, - {R_HPPA_PCREL_CALL_R11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_R11"}, - {R_HPPA_PCREL_CALL_R14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_R14"}, - {R_HPPA_PCREL_CALL_R17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_R17"}, - {R_HPPA_PCREL_CALL_LS21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_LS21"}, - {R_HPPA_PCREL_CALL_RS11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RS11"}, - {R_HPPA_PCREL_CALL_RS14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RS14"}, - {R_HPPA_PCREL_CALL_RS17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RS17"}, - {R_HPPA_PCREL_CALL_LD21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_LD21"}, - {R_HPPA_PCREL_CALL_RD11, 0, 3, 11, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RD11"}, - {R_HPPA_PCREL_CALL_RD14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RD14"}, - {R_HPPA_PCREL_CALL_RD17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RD17"}, - {R_HPPA_PCREL_CALL_LR21, 0, 3, 21, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_LR21"}, - {R_HPPA_PCREL_CALL_RR14, 0, 3, 14, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RR14"}, - {R_HPPA_PCREL_CALL_RR17, 0, 3, 17, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PCREL_CALL_RR17"}, - {R_HPPA_PLABEL_32, 0, 3, 32, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_32"}, - {R_HPPA_PLABEL_11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_11"}, - {R_HPPA_PLABEL_14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_14"}, - {R_HPPA_PLABEL_L21, 0, 3, 21, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_L21"}, - {R_HPPA_PLABEL_R11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_R11"}, - {R_HPPA_PLABEL_R14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_PLABEL_R14"}, - {R_HPPA_DLT_32, 0, 3, 32, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_32"}, - {R_HPPA_DLT_11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_11"}, - {R_HPPA_DLT_14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_14"}, - {R_HPPA_DLT_L21, 0, 3, 21, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_L21"}, - {R_HPPA_DLT_R11, 0, 3, 11, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_R11"}, - {R_HPPA_DLT_R14, 0, 3, 14, false, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_DLT_R14"}, - {R_HPPA_UNWIND_ENTRY, 0, 3, 32, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_UNWIND_ENTRY"}, - {R_HPPA_UNWIND_ENTRIES, 0, 3, 32, true, 0, complain_overflow_signed, hppa_elf_reloc, "R_HPPA_UNWIND_ENTRIES"}, - {R_HPPA_PUSH_CONST, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_CONST"}, - {R_HPPA_PUSH_PC, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_PC"}, - {R_HPPA_PUSH_SYM, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_SYM"}, - {R_HPPA_PUSH_GOTOFF, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_GOTOFF"}, - {R_HPPA_PUSH_ABS_CALL, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_ABS_CALL"}, - {R_HPPA_PUSH_PCREL_CALL, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_PCREL_CALL"}, - {R_HPPA_PUSH_PLABEL, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_PUSH_PLABEL"}, -{R_HPPA_MAX, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MAX"}, -{R_HPPA_MIN, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MIN"}, -{R_HPPA_ADD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ADD"}, -{R_HPPA_SUB, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_SUB"}, - {R_HPPA_MULT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MULT"}, -{R_HPPA_DIV, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_DIV"}, -{R_HPPA_MOD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_MOD"}, -{R_HPPA_AND, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_AND"}, - {R_HPPA_OR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_OR"}, -{R_HPPA_XOR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_XOR"}, -{R_HPPA_NOT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_NOT"}, - {R_HPPA_LSHIFT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LSHIFT"}, - {R_HPPA_ARITH_RSHIFT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_ARITH_RSHIFT"}, - {R_HPPA_LOGIC_RSHIFT, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_LOGIC_RSHIFT"}, -{R_HPPA_EXPR_F, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_L"}, - {R_HPPA_EXPR_L, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_L"}, - {R_HPPA_EXPR_R, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_R"}, - {R_HPPA_EXPR_LS, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_LS"}, - {R_HPPA_EXPR_RS, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_RS"}, - {R_HPPA_EXPR_LD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_LD"}, - {R_HPPA_EXPR_RD, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_RD"}, - {R_HPPA_EXPR_LR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_LR"}, - {R_HPPA_EXPR_RR, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_RR"}, - {R_HPPA_EXPR_32, 0, 3, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_32"}, - {R_HPPA_EXPR_21, 0, 3, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_21"}, - {R_HPPA_EXPR_11, 0, 3, 11, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_11"}, - {R_HPPA_EXPR_14, 0, 3, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_14"}, - {R_HPPA_EXPR_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_17"}, - {R_HPPA_EXPR_12, 0, 3, 12, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_EXPR_12"}, - {R_HPPA_STUB_CALL_17, 0, 3, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_HPPA_STUB_CALL_17"}, - {R_HPPA_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_dont, NULL, "R_HPPA_UNIMPLEMENTED"}, -}; + struct elf32_hppa_stub_hash_entry *ret; -static symext_chainS *symext_rootP; -static symext_chainS *symext_lastP; -static boolean symext_chain_built; -static long global_value; -static long GOT_value; -static asymbol *global_symbol; -static int global_sym_defined; -static symext_entryS *symextn_contents; -static unsigned int symextn_contents_real_size; -static elf32_hppa_stub_description *elf_hppa_stub_rootP; -static boolean stubs_finished = false; -static struct elf32_hppa_symextn_map_struct *elf32_hppa_symextn_map; -static int elf32_hppa_symextn_map_size; - -static char *linker_stubs = NULL; -static int linker_stubs_size = 0; -static int linker_stubs_max_size = 0; -#define STUB_ALLOC_INCR 100 -#define STUB_SYM_BUFFER_INC 5 - -/* Relocate the given INSN given the various input parameters. - - FIXME: endianness and sizeof (long) issues abound here. */ - -static unsigned long -hppa_elf_relocate_insn (abfd, input_sect, insn, address, sym_value, - r_addend, r_format, r_field, pcrel) - bfd *abfd; - asection *input_sect; - unsigned long insn; - unsigned long address; - long sym_value; - long r_addend; - unsigned long r_format; - unsigned long r_field; - unsigned long pcrel; + ret = (struct elf32_hppa_stub_hash_entry *) entry; + + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (ret == NULL) + { + ret = ((struct elf32_hppa_stub_hash_entry *) + bfd_hash_allocate (table, + sizeof (struct elf32_hppa_stub_hash_entry))); + if (ret == NULL) + return NULL; + } + + /* Call the allocation method of the superclass. */ + ret = ((struct elf32_hppa_stub_hash_entry *) + bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); + + if (ret) + { + /* Initialize the local fields. */ + ret->stub_sec = NULL; +#if ! LONG_BRANCH_PIC_IN_SHLIB + ret->reloc_sec = NULL; +#endif + ret->stub_offset = 0; + ret->target_value = 0; + ret->target_section = NULL; + ret->stub_type = hppa_stub_long_branch; + ret->h = NULL; + ret->id_sec = NULL; + } + + return (struct bfd_hash_entry *) ret; +} + +/* Initialize an entry in the link hash table. */ + +static struct bfd_hash_entry * +hppa_link_hash_newfunc (entry, table, string) + struct bfd_hash_entry *entry; + struct bfd_hash_table *table; + const char *string; { - unsigned char opcode = get_opcode (insn); - long constant_value; - unsigned arg_reloc; - - switch (opcode) - { - case LDO: - case LDB: - case LDH: - case LDW: - case LDWM: - case STB: - case STH: - case STW: - case STWM: - case COMICLR: - case SUBI: - case ADDIT: - case ADDI: - case LDIL: - case ADDIL: - constant_value = HPPA_R_CONSTANT (r_addend); - - if (pcrel) - sym_value -= address; - - sym_value = hppa_field_adjust (sym_value, constant_value, r_field); - return hppa_rebuild_insn (abfd, insn, sym_value, r_format); - - case BL: - case BE: - case BLE: - arg_reloc = HPPA_R_ARG_RELOC (r_addend); - - /* XXX computing constant_value is not needed??? */ - constant_value = assemble_17 ((insn & 0x001f0000) >> 16, - (insn & 0x00001ffc) >> 2, - insn & 1); - - constant_value = (constant_value << 15) >> 15; - if (pcrel) - { - sym_value -= - address + input_sect->output_offset - + input_sect->output_section->vma; - sym_value = hppa_field_adjust (sym_value, -8, r_field); - } - else - sym_value = hppa_field_adjust (sym_value, constant_value, r_field); + struct elf32_hppa_link_hash_entry *ret; - return hppa_rebuild_insn (abfd, insn, sym_value >> 2, r_format); + ret = (struct elf32_hppa_link_hash_entry *) entry; - default: - if (opcode == 0) - { - constant_value = HPPA_R_CONSTANT (r_addend); + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (ret == NULL) + { + ret = ((struct elf32_hppa_link_hash_entry *) + bfd_hash_allocate (table, + sizeof (struct elf32_hppa_link_hash_entry))); + if (ret == NULL) + return NULL; + } - if (pcrel) - sym_value -= address; + /* Call the allocation method of the superclass. */ + ret = ((struct elf32_hppa_link_hash_entry *) + _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, + table, string)); - return hppa_field_adjust (sym_value, constant_value, r_field); - } - else - abort (); + if (ret) + { + /* Initialize the local fields. */ +#if ! LONG_BRANCH_PIC_IN_SHLIB + ret->stub_reloc_sec = NULL; +#endif + ret->stub_cache = NULL; + ret->reloc_entries = NULL; + ret->maybe_pic_call = 0; + ret->pic_call = 0; + ret->plabel = 0; + ret->plt_abs = 0; } + + return (struct bfd_hash_entry *) ret; } -/* Relocate a single unwind entry, or an entire table of them. */ +/* Create the derived linker hash table. The PA ELF port uses the derived + hash table to keep information specific to the PA ELF linker (without + using static variables). */ -static void -hppa_elf_relocate_unwind_table (abfd, data, address, sym_value, - r_addend, r_type, r_field) +static struct bfd_link_hash_table * +elf32_hppa_link_hash_table_create (abfd) bfd *abfd; - PTR data; - unsigned long address; - long sym_value; - long r_addend; - unsigned long r_type; - unsigned long r_field; { - bfd_byte *hit_data = address + (bfd_byte *) data; - long start_offset; - long end_offset; - long relocated_value; - int i; + struct elf32_hppa_link_hash_table *ret; + bfd_size_type amt = sizeof (*ret); - switch (r_type) + ret = (struct elf32_hppa_link_hash_table *) bfd_alloc (abfd, amt); + if (ret == NULL) + return NULL; + + if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, hppa_link_hash_newfunc)) { - case R_HPPA_UNWIND_ENTRY: - /* Need to relocate the first two 32bit fields in the unwind. They - correspond to a function's start and end address. */ - start_offset = bfd_get_32 (abfd, hit_data); - relocated_value = hppa_field_adjust (sym_value, start_offset, r_field); - bfd_put_32 (abfd, relocated_value, hit_data); - - hit_data += sizeof (unsigned long); - end_offset = bfd_get_32 (abfd, hit_data); - relocated_value = hppa_field_adjust (sym_value, end_offset, r_field); - bfd_put_32 (abfd, relocated_value, hit_data); - break; + bfd_release (abfd, ret); + return NULL; + } - case R_HPPA_UNWIND_ENTRIES: - /* Relocate a mass of unwind entires. The count is passed in r_addend - (who's braindamaged idea was this anyway? */ - for (i = 0; i < r_addend; i++, hit_data += 3 * sizeof (unsigned long)) - { - unsigned int adjustment; - /* Adjust the first 32bit field in the unwind entry. It's - the starting offset of a function. */ - start_offset = bfd_get_32 (abfd, hit_data); - bfd_put_32 (abfd, sym_value, hit_data); - adjustment = sym_value - start_offset; - - /* Now adjust the second 32bit field, it's the ending offset - of a function. */ - hit_data += sizeof (unsigned long); - end_offset = adjustment + bfd_get_32 (abfd, hit_data); - bfd_put_32 (abfd, end_offset, hit_data); - - /* Prepare for the next iteration. */ - start_offset = bfd_get_32 (abfd, - hit_data + 3 * sizeof (unsigned long)); - sym_value = start_offset + adjustment; - } - break; + /* Init the stub hash table too. */ + if (!bfd_hash_table_init (&ret->stub_hash_table, stub_hash_newfunc)) + return NULL; + + ret->stub_bfd = NULL; + ret->add_stub_section = NULL; + ret->layout_sections_again = NULL; + ret->stub_group = NULL; + ret->sgot = NULL; + ret->srelgot = NULL; + ret->splt = NULL; + ret->srelplt = NULL; + ret->sdynbss = NULL; + ret->srelbss = NULL; + ret->text_segment_base = (bfd_vma) -1; + ret->data_segment_base = (bfd_vma) -1; + ret->multi_subspace = 0; + ret->has_12bit_branch = 0; + ret->has_17bit_branch = 0; + ret->need_plt_stub = 0; + + return &ret->root.root; +} - default: - abort (); +/* Build a name for an entry in the stub hash table. */ + +static char * +hppa_stub_name (input_section, sym_sec, hash, rel) + const asection *input_section; + const asection *sym_sec; + const struct elf32_hppa_link_hash_entry *hash; + const Elf_Internal_Rela *rel; +{ + char *stub_name; + bfd_size_type len; + + if (hash) + { + len = 8 + 1 + strlen (hash->elf.root.root.string) + 1 + 8 + 1; + stub_name = bfd_malloc (len); + if (stub_name != NULL) + { + sprintf (stub_name, "%08x_%s+%x", + input_section->id & 0xffffffff, + hash->elf.root.root.string, + (int) rel->r_addend & 0xffffffff); + } + } + else + { + len = 8 + 1 + 8 + 1 + 8 + 1 + 8 + 1; + stub_name = bfd_malloc (len); + if (stub_name != NULL) + { + sprintf (stub_name, "%08x_%x:%x+%x", + input_section->id & 0xffffffff, + sym_sec->id & 0xffffffff, + (int) ELF32_R_SYM (rel->r_info) & 0xffffffff, + (int) rel->r_addend & 0xffffffff); + } } + return stub_name; } -/* Return the relocated value of the given symbol. */ +/* Look up an entry in the stub hash. Stub entries are cached because + creating the stub name takes a bit of time. */ -static long -get_symbol_value (symbol) - asymbol *symbol; +static struct elf32_hppa_stub_hash_entry * +hppa_get_stub_entry (input_section, sym_sec, hash, rel, hplink) + const asection *input_section; + const asection *sym_sec; + struct elf32_hppa_link_hash_entry *hash; + const Elf_Internal_Rela *rel; + struct elf32_hppa_link_hash_table *hplink; { - if (symbol == NULL - || symbol->section == &bfd_com_section) - return 0; + struct elf32_hppa_stub_hash_entry *stub_entry; + const asection *id_sec; + + /* If this input section is part of a group of sections sharing one + stub section, then use the id of the first section in the group. + Stub names need to include a section id, as there may well be + more than one stub used to reach say, printf, and we need to + distinguish between them. */ + id_sec = hplink->stub_group[input_section->id].link_sec; + + if (hash != NULL && hash->stub_cache != NULL + && hash->stub_cache->h == hash + && hash->stub_cache->id_sec == id_sec) + { + stub_entry = hash->stub_cache; + } else - return symbol->value + symbol->section->output_section->vma - + symbol->section->output_offset; + { + char *stub_name; + + stub_name = hppa_stub_name (id_sec, sym_sec, hash, rel); + if (stub_name == NULL) + return NULL; + + stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, + stub_name, false, false); + if (stub_entry == NULL) + { + if (hash == NULL || hash->elf.root.type != bfd_link_hash_undefweak) + (*_bfd_error_handler) (_("%s(%s+0x%lx): cannot find stub entry %s"), + bfd_archive_filename (input_section->owner), + input_section->name, + (long) rel->r_offset, + stub_name); + } + else + { + if (hash != NULL) + hash->stub_cache = stub_entry; + } + + free (stub_name); + } + + return stub_entry; } -/* Return one (or more) BFD relocations which implement the base - relocation with modifications based on format and field. */ +/* Add a new stub entry to the stub hash. Not all fields of the new + stub entry are initialised. */ -elf32_hppa_reloc_type ** -hppa_elf_gen_reloc_type (abfd, base_type, format, field) - bfd *abfd; - elf32_hppa_reloc_type base_type; - int format; - int field; +static struct elf32_hppa_stub_hash_entry * +hppa_add_stub (stub_name, section, hplink) + const char *stub_name; + asection *section; + struct elf32_hppa_link_hash_table *hplink; { - elf32_hppa_reloc_type *finaltype; - elf32_hppa_reloc_type **final_types; + asection *link_sec; + asection *stub_sec; + struct elf32_hppa_stub_hash_entry *stub_entry; + + link_sec = hplink->stub_group[section->id].link_sec; + stub_sec = hplink->stub_group[section->id].stub_sec; + if (stub_sec == NULL) + { + stub_sec = hplink->stub_group[link_sec->id].stub_sec; + if (stub_sec == NULL) + { + bfd_size_type len; + char *s_name; + + len = strlen (link_sec->name) + sizeof (STUB_SUFFIX); + s_name = bfd_alloc (hplink->stub_bfd, len); + if (s_name == NULL) + return NULL; + + strcpy (s_name, link_sec->name); + strcpy (s_name + len - sizeof (STUB_SUFFIX), STUB_SUFFIX); + stub_sec = (*hplink->add_stub_section) (s_name, link_sec); + if (stub_sec == NULL) + return NULL; + hplink->stub_group[link_sec->id].stub_sec = stub_sec; + } + hplink->stub_group[section->id].stub_sec = stub_sec; + } + + /* Enter this entry into the linker stub hash table. */ + stub_entry = hppa_stub_hash_lookup (&hplink->stub_hash_table, stub_name, + true, false); + if (stub_entry == NULL) + { + (*_bfd_error_handler) (_("%s: cannot create stub entry %s"), + bfd_archive_filename (section->owner), + stub_name); + return NULL; + } + + stub_entry->stub_sec = stub_sec; +#if ! LONG_BRANCH_PIC_IN_SHLIB + stub_entry->reloc_sec = hplink->stub_group[section->id].reloc_sec; +#endif + stub_entry->stub_offset = 0; + stub_entry->id_sec = link_sec; + return stub_entry; +} - /* Allocate slots for the BFD relocation. */ - final_types = (elf32_hppa_reloc_type **) - bfd_alloc_by_size_t (abfd, sizeof (elf32_hppa_reloc_type *) * 2); - BFD_ASSERT (final_types != 0); /* FIXME */ +/* Determine the type of stub needed, if any, for a call. */ - /* Allocate space for the relocation itself. */ - finaltype = (elf32_hppa_reloc_type *) - bfd_alloc_by_size_t (abfd, sizeof (elf32_hppa_reloc_type)); - BFD_ASSERT (finaltype != 0); /* FIXME */ +static enum elf32_hppa_stub_type +hppa_type_of_stub (input_sec, rel, hash, destination) + asection *input_sec; + const Elf_Internal_Rela *rel; + struct elf32_hppa_link_hash_entry *hash; + bfd_vma destination; +{ + bfd_vma location; + bfd_vma branch_offset; + bfd_vma max_branch_offset; + unsigned int r_type; + + if (hash != NULL + && (((hash->elf.root.type == bfd_link_hash_defined + || hash->elf.root.type == bfd_link_hash_defweak) + && hash->elf.root.u.def.section->output_section == NULL) + || (hash->elf.root.type == bfd_link_hash_defweak + && hash->elf.dynindx != -1 + && hash->elf.plt.offset != (bfd_vma) -1) + || hash->elf.root.type == bfd_link_hash_undefweak + || hash->elf.root.type == bfd_link_hash_undefined + || (hash->maybe_pic_call && !(input_sec->flags & SEC_HAS_GOT_REF)))) + { + /* If output_section is NULL, then it's a symbol defined in a + shared library. We will need an import stub. Decide between + hppa_stub_import and hppa_stub_import_shared later. For + shared links we need stubs for undefined or weak syms too; + They will presumably be resolved by the dynamic linker. */ + return hppa_stub_import; + } - /* Some reasonable defaults. */ - final_types[0] = finaltype; - final_types[1] = NULL; + /* Determine where the call point is. */ + location = (input_sec->output_offset + + input_sec->output_section->vma + + rel->r_offset); -#define final_type finaltype[0] + branch_offset = destination - location - 8; + r_type = ELF32_R_TYPE (rel->r_info); - final_type = base_type; + /* Determine if a long branch stub is needed. parisc branch offsets + are relative to the second instruction past the branch, ie. +8 + bytes on from the branch instruction location. The offset is + signed and counts in units of 4 bytes. */ + if (r_type == (unsigned int) R_PARISC_PCREL17F) + { + max_branch_offset = (1 << (17-1)) << 2; + } + else if (r_type == (unsigned int) R_PARISC_PCREL12F) + { + max_branch_offset = (1 << (12-1)) << 2; + } + else /* R_PARISC_PCREL22F. */ + { + max_branch_offset = (1 << (22-1)) << 2; + } - /* Just a tangle of nested switch statements to deal with the braindamage - that a different field selector means a completely different relocation - for PA ELF. */ - switch (base_type) + if (branch_offset + max_branch_offset >= 2*max_branch_offset) { - case R_HPPA: - switch (format) +#if LONG_BRANCH_VIA_PLT + if (hash != NULL + && hash->elf.dynindx != -1 + && hash->elf.plt.offset != (bfd_vma) -1 + && hash->elf.type != STT_PARISC_MILLI) { - case 11: - switch (field) - { - case e_fsel: - final_type = R_HPPA_11; - break; - case e_rsel: - final_type = R_HPPA_R11; - break; - case e_rssel: - final_type = R_HPPA_RS11; - break; - case e_rdsel: - final_type = R_HPPA_RD11; - break; - case e_psel: - final_type = R_HPPA_PLABEL_11; - break; - case e_rpsel: - final_type = R_HPPA_PLABEL_R11; - break; - case e_tsel: - final_type = R_HPPA_DLT_11; - break; - case e_rtsel: - final_type = R_HPPA_DLT_R11; - break; - default: - abort (); - break; - } - break; + /* If we are doing a shared link and find we need a long + branch stub, then go via the .plt if possible. */ + return hppa_stub_import; + } + else +#endif + return hppa_stub_long_branch; + } + return hppa_stub_none; +} - case 14: - switch (field) - { - case e_rsel: - final_type = R_HPPA_R14; - break; - case e_rssel: - final_type = R_HPPA_RS14; - break; - case e_rdsel: - final_type = R_HPPA_RD14; - break; - case e_rrsel: - final_type = R_HPPA_RR14; - break; - case e_psel: - final_type = R_HPPA_PLABEL_14; - break; - case e_rpsel: - final_type = R_HPPA_PLABEL_R14; - break; - case e_tsel: - final_type = R_HPPA_DLT_14; - break; - case e_rtsel: - final_type = R_HPPA_DLT_R14; - break; - default: - abort (); - break; - } - break; +/* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. + IN_ARG contains the link info pointer. */ - case 17: - switch (field) - { - case e_fsel: - final_type = R_HPPA_17; - break; - case e_rsel: - final_type = R_HPPA_R17; - break; - case e_rssel: - final_type = R_HPPA_RS17; - break; - case e_rdsel: - final_type = R_HPPA_RD17; - break; - case e_rrsel: - final_type = R_HPPA_RR17; - break; - default: - abort (); - break; - } - break; +#define LDIL_R1 0x20200000 /* ldil LR'XXX,%r1 */ +#define BE_SR4_R1 0xe0202002 /* be,n RR'XXX(%sr4,%r1) */ + +#define BL_R1 0xe8200000 /* b,l .+8,%r1 */ +#define ADDIL_R1 0x28200000 /* addil LR'XXX,%r1,%r1 */ +#define DEPI_R1 0xd4201c1e /* depi 0,31,2,%r1 */ + +#define ADDIL_DP 0x2b600000 /* addil LR'XXX,%dp,%r1 */ +#define LDW_R1_R21 0x48350000 /* ldw RR'XXX(%sr0,%r1),%r21 */ +#define BV_R0_R21 0xeaa0c000 /* bv %r0(%r21) */ +#define LDW_R1_R19 0x48330000 /* ldw RR'XXX(%sr0,%r1),%r19 */ + +#define ADDIL_R19 0x2a600000 /* addil LR'XXX,%r19,%r1 */ +#define LDW_R1_DP 0x483b0000 /* ldw RR'XXX(%sr0,%r1),%dp */ + +#define LDSID_R21_R1 0x02a010a1 /* ldsid (%sr0,%r21),%r1 */ +#define MTSP_R1 0x00011820 /* mtsp %r1,%sr0 */ +#define BE_SR0_R21 0xe2a00000 /* be 0(%sr0,%r21) */ +#define STW_RP 0x6bc23fd1 /* stw %rp,-24(%sr0,%sp) */ + +#define BL_RP 0xe8400002 /* b,l,n XXX,%rp */ +#define NOP 0x08000240 /* nop */ +#define LDW_RP 0x4bc23fd1 /* ldw -24(%sr0,%sp),%rp */ +#define LDSID_RP_R1 0x004010a1 /* ldsid (%sr0,%rp),%r1 */ +#define BE_SR0_RP 0xe0400002 /* be,n 0(%sr0,%rp) */ + +#ifndef R19_STUBS +#define R19_STUBS 1 +#endif + +#if R19_STUBS +#define LDW_R1_DLT LDW_R1_R19 +#else +#define LDW_R1_DLT LDW_R1_DP +#endif + +static boolean +hppa_build_one_stub (gen_entry, in_arg) + struct bfd_hash_entry *gen_entry; + PTR in_arg; +{ + struct elf32_hppa_stub_hash_entry *stub_entry; + struct bfd_link_info *info; + struct elf32_hppa_link_hash_table *hplink; + asection *stub_sec; + bfd *stub_bfd; + bfd_byte *loc; + bfd_vma sym_value; + bfd_vma insn; + bfd_vma off; + int val; + int size; + + /* Massage our args to the form they really have. */ + stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; + info = (struct bfd_link_info *) in_arg; + + hplink = hppa_link_hash_table (info); + stub_sec = stub_entry->stub_sec; - case 21: - switch (field) + /* Make a note of the offset within the stubs for this entry. */ + stub_entry->stub_offset = stub_sec->_raw_size; + loc = stub_sec->contents + stub_entry->stub_offset; + + stub_bfd = stub_sec->owner; + + switch (stub_entry->stub_type) + { + case hppa_stub_long_branch: + /* Create the long branch. A long branch is formed with "ldil" + loading the upper bits of the target address into a register, + then branching with "be" which adds in the lower bits. + The "be" has its delay slot nullified. */ + sym_value = (stub_entry->target_value + + stub_entry->target_section->output_offset + + stub_entry->target_section->output_section->vma); + + val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel); + insn = hppa_rebuild_insn ((int) LDIL_R1, val, 21); + bfd_put_32 (stub_bfd, insn, loc); + + val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel) >> 2; + insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); + bfd_put_32 (stub_bfd, insn, loc + 4); + +#if ! LONG_BRANCH_PIC_IN_SHLIB + if (info->shared) + { + /* Output a dynamic relocation for this stub. We only + output one PCREL21L reloc per stub, trusting that the + dynamic linker will also fix the implied PCREL17R for the + second instruction. PCREL21L dynamic relocs had better + never be emitted for some other purpose... */ + asection *srel; + Elf_Internal_Rela outrel; + + if (stub_entry->h == NULL) { - case e_lsel: - final_type = R_HPPA_L21; - break; - case e_lssel: - final_type = R_HPPA_LS21; - break; - case e_ldsel: - final_type = R_HPPA_LD21; - break; - case e_lrsel: - final_type = R_HPPA_LR21; - break; - case e_lpsel: - final_type = R_HPPA_PLABEL_L21; - break; - case e_ltsel: - final_type = R_HPPA_PLABEL_L21; - break; - default: - abort (); - break; + (*_bfd_error_handler) + (_("%s(%s+0x%lx): cannot relocate %s, recompile with -ffunction-sections"), + bfd_archive_filename (stub_entry->target_section->owner), + stub_sec->name, + (long) stub_entry->stub_offset, + stub_entry->root.string); + bfd_set_error (bfd_error_bad_value); + return false; } - break; - case 32: - switch (field) + srel = stub_entry->reloc_sec; + if (srel == NULL) { - case e_fsel: - final_type = R_HPPA_32; - break; - case e_psel: - final_type = R_HPPA_PLABEL_32; - break; - case e_tsel: - final_type = R_HPPA_DLT_32; - break; - default: - abort (); - break; + (*_bfd_error_handler) + (_("Could not find relocation section for %s"), + stub_sec->name); + bfd_set_error (bfd_error_bad_value); + return false; } - break; - default: - abort (); - break; + outrel.r_offset = (stub_entry->stub_offset + + stub_sec->output_offset + + stub_sec->output_section->vma); + outrel.r_info = ELF32_R_INFO (0, R_PARISC_PCREL21L); + outrel.r_addend = sym_value; + bfd_elf32_swap_reloca_out (stub_sec->output_section->owner, + &outrel, + ((Elf32_External_Rela *) + srel->contents + srel->reloc_count)); + ++srel->reloc_count; } +#endif + size = 8; + break; + + case hppa_stub_long_branch_shared: + /* Branches are relative. This is where we are going to. */ + sym_value = (stub_entry->target_value + + stub_entry->target_section->output_offset + + stub_entry->target_section->output_section->vma); + + /* And this is where we are coming from, more or less. */ + sym_value -= (stub_entry->stub_offset + + stub_sec->output_offset + + stub_sec->output_section->vma); + + bfd_put_32 (stub_bfd, (bfd_vma) BL_R1, loc); + val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_lrsel); + insn = hppa_rebuild_insn ((int) ADDIL_R1, val, 21); + bfd_put_32 (stub_bfd, insn, loc + 4); + + val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_rrsel) >> 2; + insn = hppa_rebuild_insn ((int) BE_SR4_R1, val, 17); + bfd_put_32 (stub_bfd, insn, loc + 8); + size = 12; break; + case hppa_stub_import: + case hppa_stub_import_shared: + off = stub_entry->h->elf.plt.offset; + if (off >= (bfd_vma) -2) + abort (); - case R_HPPA_GOTOFF: - switch (format) + off &= ~ (bfd_vma) 1; + sym_value = (off + + hplink->splt->output_offset + + hplink->splt->output_section->vma + - elf_gp (hplink->splt->output_section->owner)); + + insn = ADDIL_DP; +#if R19_STUBS + if (stub_entry->stub_type == hppa_stub_import_shared) + insn = ADDIL_R19; +#endif + val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_lrsel), + insn = hppa_rebuild_insn ((int) insn, val, 21); + bfd_put_32 (stub_bfd, insn, loc); + + /* It is critical to use lrsel/rrsel here because we are using + two different offsets (+0 and +4) from sym_value. If we use + lsel/rsel then with unfortunate sym_values we will round + sym_value+4 up to the next 2k block leading to a mis-match + between the lsel and rsel value. */ + val = hppa_field_adjust (sym_value, (bfd_signed_vma) 0, e_rrsel); + insn = hppa_rebuild_insn ((int) LDW_R1_R21, val, 14); + bfd_put_32 (stub_bfd, insn, loc + 4); + + if (hplink->multi_subspace) { - case 11: - switch (field) - { - case e_rsel: - final_type = R_HPPA_GOTOFF_R11; - break; - case e_rssel: - final_type = R_HPPA_GOTOFF_RS11; - break; - case e_rdsel: - final_type = R_HPPA_GOTOFF_RD11; - break; - case e_fsel: - final_type = R_HPPA_GOTOFF_11; - break; - default: - abort (); - break; - } - break; + val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel); + insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); + bfd_put_32 (stub_bfd, insn, loc + 8); - case 14: - switch (field) - { - case e_rsel: - final_type = R_HPPA_GOTOFF_R14; - break; - case e_rssel: - final_type = R_HPPA_GOTOFF_RS14; - break; - case e_rdsel: - final_type = R_HPPA_GOTOFF_RD14; - break; - case e_rrsel: - final_type = R_HPPA_GOTOFF_RR14; - break; - case e_fsel: - final_type = R_HPPA_GOTOFF_14; - break; - default: - abort (); - break; - } - break; + 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); - case 21: - switch (field) - { - case e_lsel: - final_type = R_HPPA_GOTOFF_L21; - break; - case e_lssel: - final_type = R_HPPA_GOTOFF_LS21; - break; - case e_ldsel: - final_type = R_HPPA_GOTOFF_LD21; - break; - case e_lrsel: - final_type = R_HPPA_GOTOFF_LR21; - break; - default: - abort (); - break; - } - break; + size = 28; + } + else + { + bfd_put_32 (stub_bfd, (bfd_vma) BV_R0_R21, loc + 8); + val = hppa_field_adjust (sym_value, (bfd_signed_vma) 4, e_rrsel); + insn = hppa_rebuild_insn ((int) LDW_R1_DLT, val, 14); + bfd_put_32 (stub_bfd, insn, loc + 12); - default: - abort (); - break; + size = 16; + } + + 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; + + dynobj = hplink->root.dynobj; + eh = (struct elf32_hppa_link_hash_entry *) stub_entry->h; + + if (eh->elf.root.type != bfd_link_hash_defined + && eh->elf.root.type != bfd_link_hash_defweak) + abort (); + + value = (eh->elf.root.u.def.value + + eh->elf.root.u.def.section->output_offset + + eh->elf.root.u.def.section->output_section->vma); + + /* Fill in the entry in the procedure linkage table. + + The format of a plt entry is + + <__gp>. */ + + bfd_put_32 (hplink->splt->owner, value, + hplink->splt->contents + off); + value = elf_gp (hplink->splt->output_section->owner); + bfd_put_32 (hplink->splt->owner, value, + hplink->splt->contents + off + 4); } break; + case hppa_stub_export: + /* Branches are relative. This is where we are going to. */ + sym_value = (stub_entry->target_value + + stub_entry->target_section->output_offset + + stub_entry->target_section->output_section->vma); + + /* And this is where we are coming from. */ + sym_value -= (stub_entry->stub_offset + + stub_sec->output_offset + + stub_sec->output_section->vma); - case R_HPPA_PCREL_CALL: - switch (format) + if (sym_value - 8 + 0x40000 >= 0x80000) { - case 11: - switch (field) - { - case e_rsel: - final_type = R_HPPA_PCREL_CALL_R11; - break; - case e_rssel: - final_type = R_HPPA_PCREL_CALL_RS11; - break; - case e_rdsel: - final_type = R_HPPA_PCREL_CALL_RD11; - break; - case e_fsel: - final_type = R_HPPA_PCREL_CALL_11; - break; - default: - abort (); - break; - } + (*_bfd_error_handler) + (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), + bfd_archive_filename (stub_entry->target_section->owner), + stub_sec->name, + (long) stub_entry->stub_offset, + stub_entry->root.string); + bfd_set_error (bfd_error_bad_value); + return false; + } + + val = hppa_field_adjust (sym_value, (bfd_signed_vma) -8, e_fsel) >> 2; + insn = hppa_rebuild_insn ((int) BL_RP, val, 17); + bfd_put_32 (stub_bfd, insn, loc); + + bfd_put_32 (stub_bfd, (bfd_vma) NOP, loc + 4); + bfd_put_32 (stub_bfd, (bfd_vma) LDW_RP, loc + 8); + bfd_put_32 (stub_bfd, (bfd_vma) LDSID_RP_R1, loc + 12); + bfd_put_32 (stub_bfd, (bfd_vma) MTSP_R1, loc + 16); + bfd_put_32 (stub_bfd, (bfd_vma) BE_SR0_RP, loc + 20); + + /* Point the function symbol at the stub. */ + stub_entry->h->elf.root.u.def.section = stub_sec; + stub_entry->h->elf.root.u.def.value = stub_sec->_raw_size; + + size = 24; + break; + + default: + BFD_FAIL (); + return false; + } + + stub_sec->_raw_size += size; + return true; +} + +#undef LDIL_R1 +#undef BE_SR4_R1 +#undef BL_R1 +#undef ADDIL_R1 +#undef DEPI_R1 +#undef ADDIL_DP +#undef LDW_R1_R21 +#undef LDW_R1_DLT +#undef LDW_R1_R19 +#undef ADDIL_R19 +#undef LDW_R1_DP +#undef LDSID_R21_R1 +#undef MTSP_R1 +#undef BE_SR0_R21 +#undef STW_RP +#undef BV_R0_R21 +#undef BL_RP +#undef NOP +#undef LDW_RP +#undef LDSID_RP_R1 +#undef BE_SR0_RP + +/* As above, but don't actually build the stub. Just bump offset so + we know stub section sizes. */ + +static boolean +hppa_size_one_stub (gen_entry, in_arg) + struct bfd_hash_entry *gen_entry; + PTR in_arg; +{ + struct elf32_hppa_stub_hash_entry *stub_entry; + struct elf32_hppa_link_hash_table *hplink; + int size; + + /* Massage our args to the form they really have. */ + stub_entry = (struct elf32_hppa_stub_hash_entry *) gen_entry; + hplink = (struct elf32_hppa_link_hash_table *) in_arg; + + if (stub_entry->stub_type == hppa_stub_long_branch) + { +#if ! LONG_BRANCH_PIC_IN_SHLIB + if (stub_entry->reloc_sec != NULL) + stub_entry->reloc_sec->_raw_size += sizeof (Elf32_External_Rela); +#endif + size = 8; + } + else if (stub_entry->stub_type == hppa_stub_long_branch_shared) + size = 12; + else if (stub_entry->stub_type == hppa_stub_export) + size = 24; + else /* hppa_stub_import or hppa_stub_import_shared. */ + { + if (hplink->multi_subspace) + size = 28; + else + size = 16; + } + + stub_entry->stub_sec->_raw_size += size; + return true; +} + +/* Return nonzero if ABFD represents an HPPA ELF32 file. + Additionally we set the default architecture and machine. */ + +static boolean +elf32_hppa_object_p (abfd) + bfd *abfd; +{ + Elf_Internal_Ehdr * i_ehdrp; + unsigned int flags; + + i_ehdrp = elf_elfheader (abfd); + if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0) + { + if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_LINUX) + return false; + } + else + { + if (i_ehdrp->e_ident[EI_OSABI] != ELFOSABI_HPUX) + return false; + } + + flags = i_ehdrp->e_flags; + switch (flags & (EF_PARISC_ARCH | EF_PARISC_WIDE)) + { + case EFA_PARISC_1_0: + return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 10); + case EFA_PARISC_1_1: + return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 11); + case EFA_PARISC_2_0: + return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 20); + case EFA_PARISC_2_0 | EF_PARISC_WIDE: + return bfd_default_set_arch_mach (abfd, bfd_arch_hppa, 25); + } + return true; +} + +/* Undo the generic ELF code's subtraction of section->vma from the + value of each external symbol. */ + +static boolean +elf32_hppa_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) + bfd *abfd ATTRIBUTE_UNUSED; + struct bfd_link_info *info ATTRIBUTE_UNUSED; + const Elf_Internal_Sym *sym ATTRIBUTE_UNUSED; + const char **namep ATTRIBUTE_UNUSED; + flagword *flagsp ATTRIBUTE_UNUSED; + asection **secp; + bfd_vma *valp; +{ + *valp += (*secp)->vma; + return true; +} + +/* Create the .plt and .got sections, and set up our hash table + short-cuts to various dynamic sections. */ + +static boolean +elf32_hppa_create_dynamic_sections (abfd, info) + bfd *abfd; + struct bfd_link_info *info; +{ + struct elf32_hppa_link_hash_table *hplink; + + /* Don't try to create the .plt and .got twice. */ + hplink = hppa_link_hash_table (info); + if (hplink->splt != NULL) + return true; + + /* Call the generic code to do most of the work. */ + if (! _bfd_elf_create_dynamic_sections (abfd, info)) + return false; + + hplink->splt = bfd_get_section_by_name (abfd, ".plt"); + hplink->srelplt = bfd_get_section_by_name (abfd, ".rela.plt"); + + hplink->sgot = bfd_get_section_by_name (abfd, ".got"); + hplink->srelgot = bfd_make_section (abfd, ".rela.got"); + if (hplink->srelgot == NULL + || ! bfd_set_section_flags (abfd, hplink->srelgot, + (SEC_ALLOC + | SEC_LOAD + | SEC_HAS_CONTENTS + | SEC_IN_MEMORY + | SEC_LINKER_CREATED + | SEC_READONLY)) + || ! bfd_set_section_alignment (abfd, hplink->srelgot, 2)) + return false; + + hplink->sdynbss = bfd_get_section_by_name (abfd, ".dynbss"); + hplink->srelbss = bfd_get_section_by_name (abfd, ".rela.bss"); + + return true; +} + +/* Look through the relocs for a section during the first phase, and + allocate space in the global offset table or procedure linkage + table. At this point we haven't necessarily read all the input + files. */ + +static boolean +elf32_hppa_check_relocs (abfd, info, sec, relocs) + bfd *abfd; + struct bfd_link_info *info; + asection *sec; + const Elf_Internal_Rela *relocs; +{ + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + const Elf_Internal_Rela *rel; + const Elf_Internal_Rela *rel_end; + struct elf32_hppa_link_hash_table *hplink; + asection *sreloc; + asection *stubreloc; + + if (info->relocateable) + return true; + + hplink = hppa_link_hash_table (info); + dynobj = hplink->root.dynobj; + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_refcounts (abfd); + sreloc = NULL; + stubreloc = NULL; + + rel_end = relocs + sec->reloc_count; + for (rel = relocs; rel < rel_end; rel++) + { + enum { + NEED_GOT = 1, + NEED_PLT = 2, + NEED_DYNREL = 4, +#if LONG_BRANCH_PIC_IN_SHLIB + NEED_STUBREL = 0, /* We won't be needing them in this case. */ +#else + NEED_STUBREL = 8, +#endif + PLT_PLABEL = 16 + }; + + unsigned int r_symndx, r_type; + struct elf32_hppa_link_hash_entry *h; + int need_entry; + + r_symndx = ELF32_R_SYM (rel->r_info); + + if (r_symndx < symtab_hdr->sh_info) + h = NULL; + else + h = ((struct elf32_hppa_link_hash_entry *) + sym_hashes[r_symndx - symtab_hdr->sh_info]); + + r_type = ELF32_R_TYPE (rel->r_info); + + switch (r_type) + { + case R_PARISC_DLTIND14F: + case R_PARISC_DLTIND14R: + case R_PARISC_DLTIND21L: + /* This symbol requires a global offset table entry. */ + need_entry = NEED_GOT; + + /* Mark this section as containing PIC code. */ + sec->flags |= SEC_HAS_GOT_REF; break; - case 14: - switch (field) + case R_PARISC_PLABEL14R: /* "Official" procedure labels. */ + case R_PARISC_PLABEL21L: + case R_PARISC_PLABEL32: + /* If the addend is non-zero, we break badly. */ + if (rel->r_addend != 0) + abort (); + + /* If we are creating a shared library, then we need to + create a PLT entry for all PLABELs, because PLABELs with + local symbols may be passed via a pointer to another + object. Additionally, output a dynamic relocation + pointing to the PLT entry. + For executables, the original 32-bit ABI allowed two + different styles of PLABELs (function pointers): For + global functions, the PLABEL word points into the .plt + two bytes past a (function address, gp) pair, and for + local functions the PLABEL points directly at the + function. The magic +2 for the first type allows us to + differentiate between the two. As you can imagine, this + is a real pain when it comes to generating code to call + functions indirectly or to compare function pointers. + We avoid the mess by always pointing a PLABEL into the + .plt, even for local functions. */ + need_entry = PLT_PLABEL | NEED_PLT | NEED_DYNREL; + break; + + case R_PARISC_PCREL12F: + hplink->has_12bit_branch = 1; + /* Fall thru. */ + case R_PARISC_PCREL17C: + case R_PARISC_PCREL17F: + hplink->has_17bit_branch = 1; + /* Fall thru. */ + case R_PARISC_PCREL22F: + /* Function calls might need to go through the .plt, and + might require long branch stubs. */ + if (h == NULL) { - case e_rsel: - final_type = R_HPPA_PCREL_CALL_R14; - break; - case e_rssel: - final_type = R_HPPA_PCREL_CALL_RS14; - break; - case e_rdsel: - final_type = R_HPPA_PCREL_CALL_RD14; - break; - case e_rrsel: - final_type = R_HPPA_PCREL_CALL_RR14; - break; - case e_fsel: - final_type = R_HPPA_PCREL_CALL_14; - break; - default: - abort (); - break; + /* We know local syms won't need a .plt entry, and if + they need a long branch stub we can't guarantee that + we can reach the stub. So just flag an error later + if we're doing a shared link and find we need a long + branch stub. */ + continue; + } + else + { + /* Global symbols will need a .plt entry if they remain + global, and in most cases won't need a long branch + stub. Unfortunately, we have to cater for the case + where a symbol is forced local by versioning, or due + to symbolic linking, and we lose the .plt entry. */ + need_entry = NEED_PLT | NEED_STUBREL; + if (h->elf.type == STT_PARISC_MILLI) + need_entry = NEED_STUBREL; } break; - case 17: - switch (field) + case R_PARISC_SEGBASE: /* Used to set segment base. */ + case R_PARISC_SEGREL32: /* Relative reloc, used for unwind. */ + case R_PARISC_PCREL14F: /* PC relative load/store. */ + case R_PARISC_PCREL14R: + case R_PARISC_PCREL17R: /* External branches. */ + case R_PARISC_PCREL21L: /* As above, and for load/store too. */ + /* We don't need to propagate the relocation if linking a + shared object since these are section relative. */ + continue; + + case R_PARISC_DPREL14F: /* Used for gp rel data load/store. */ + case R_PARISC_DPREL14R: + case R_PARISC_DPREL21L: + if (info->shared) { - case e_rsel: - final_type = R_HPPA_PCREL_CALL_R17; - break; - case e_rssel: - final_type = R_HPPA_PCREL_CALL_RS17; - break; - case e_rdsel: - final_type = R_HPPA_PCREL_CALL_RD17; - break; - case e_rrsel: - final_type = R_HPPA_PCREL_CALL_RR17; - break; - case e_fsel: - final_type = R_HPPA_PCREL_CALL_17; - break; - default: - abort (); - break; + (*_bfd_error_handler) + (_("%s: relocation %s can not be used when making a shared object; recompile with -fPIC"), + bfd_archive_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_archive_filename (abfd), + elf_hppa_howto_table[r_type].name); } + /* Fall through. */ +#endif + + case R_PARISC_DIR32: /* .word relocs. */ + /* We may want to output a dynamic relocation later. */ + need_entry = NEED_DYNREL; break; - case 21: - switch (field) + /* This relocation describes the C++ object vtable hierarchy. + Reconstruct it for later use during GC. */ + case R_PARISC_GNU_VTINHERIT: + if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, + &h->elf, rel->r_offset)) + return false; + continue; + + /* This relocation describes which C++ vtable entries are actually + used. Record for later use during GC. */ + case R_PARISC_GNU_VTENTRY: + if (!_bfd_elf32_gc_record_vtentry (abfd, sec, + &h->elf, rel->r_addend)) + return false; + continue; + + default: + 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; + + if (hplink->sgot == NULL) { - case e_lsel: - final_type = R_HPPA_PCREL_CALL_L21; - break; - case e_lssel: - final_type = R_HPPA_PCREL_CALL_LS21; - break; - case e_ldsel: - final_type = R_HPPA_PCREL_CALL_LD21; - break; - case e_lrsel: - final_type = R_HPPA_PCREL_CALL_LR21; - break; - default: - abort (); - break; + if (! elf32_hppa_create_dynamic_sections (dynobj, info)) + return false; + } + + if (h != NULL) + { + if (h->elf.got.refcount == -1) + h->elf.got.refcount = 1; + else + h->elf.got.refcount += 1; + } + else + { + /* This is a global offset table entry for a local symbol. */ + if (local_got_refcounts == NULL) + { + bfd_size_type size; + + /* Allocate space for local got offsets and local + plt offsets. Done this way to save polluting + elf_obj_tdata with another target specific + pointer. */ + size = symtab_hdr->sh_info; + size *= 2 * sizeof (bfd_signed_vma); + local_got_refcounts = ((bfd_signed_vma *) + bfd_alloc (abfd, size)); + if (local_got_refcounts == NULL) + return false; + elf_local_got_refcounts (abfd) = local_got_refcounts; + memset (local_got_refcounts, -1, (size_t) size); + } + if (local_got_refcounts[r_symndx] == -1) + local_got_refcounts[r_symndx] = 1; + else + local_got_refcounts[r_symndx] += 1; + } + } + + 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) + { + h->elf.plt.refcount = 1; + h->elf.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + } + else + h->elf.plt.refcount += 1; + + /* If this .plt entry is for a plabel, mark it so + that adjust_dynamic_symbol will keep the entry + even if it appears to be local. */ + if (need_entry & PLT_PLABEL) + h->plabel = 1; + } + else if (need_entry & PLT_PLABEL) + { + bfd_signed_vma *local_plt_refcounts; + + if (local_got_refcounts == NULL) + { + bfd_size_type size; + + /* Allocate space for local got offsets and local + plt offsets. */ + size = symtab_hdr->sh_info; + size *= 2 * sizeof (bfd_signed_vma); + local_got_refcounts = ((bfd_signed_vma *) + bfd_alloc (abfd, size)); + if (local_got_refcounts == NULL) + return false; + elf_local_got_refcounts (abfd) = local_got_refcounts; + memset (local_got_refcounts, -1, (size_t) size); + } + local_plt_refcounts = (local_got_refcounts + + symtab_hdr->sh_info); + if (local_plt_refcounts[r_symndx] == -1) + local_plt_refcounts[r_symndx] = 1; + else + local_plt_refcounts[r_symndx] += 1; + } + } + } + + if (need_entry & (NEED_DYNREL | NEED_STUBREL)) + { + /* Flag this symbol as having a non-got, non-plt reference + so that we generate copy relocs if it turns out to be + dynamic. */ + if (need_entry == NEED_DYNREL + && h != NULL + && !info->shared + && (sec->flags & SEC_READONLY) != 0) + h->elf.elf_link_hash_flags |= ELF_LINK_NON_GOT_REF; + + /* If we are creating a shared library then we need to copy + the reloc into the shared library. However, if we are + linking with -Bsymbolic, we need only copy absolute + relocs or relocs against symbols that are not defined in + an object we are including in the link. PC- or DP- or + DLT-relative relocs against any local sym or global sym + with DEF_REGULAR set, can be discarded. At this point we + have not seen all the input files, so it is possible that + DEF_REGULAR is not set now but will be set later (it is + never cleared). We account for that possibility below by + storing information in the reloc_entries field of the + hash table entry. + + A similar situation to the -Bsymbolic case occurs when + creating shared libraries and symbol visibility changes + render the symbol local. + + As it turns out, all the relocs we will be creating here + are absolute, so we cannot remove them on -Bsymbolic + links or visibility changes anyway. A STUB_REL reloc + is absolute too, as in that case it is the reloc in the + stub we will be creating, rather than copying the PCREL + reloc in the branch. + + If on the other hand, we are creating an executable, we + may need to keep relocations for symbols satisfied by a + dynamic library if we manage to avoid copy relocs for the + symbol. */ + if ((info->shared + && (sec->flags & SEC_ALLOC) != 0 + && (IS_ABSOLUTE_RELOC (r_type) + || (h != NULL + && (!info->symbolic + || h->elf.root.type == bfd_link_hash_defweak + || (h->elf.elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)))) + || (!info->shared + && (sec->flags & SEC_ALLOC) != 0 + && h != NULL + && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 + && (h->elf.root.type == bfd_link_hash_defweak + || (h->elf.elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0))) + { + boolean doit; + asection *srel; + + srel = sreloc; + if ((need_entry & NEED_STUBREL)) + srel = stubreloc; + + /* Create a reloc section in dynobj and make room for + this reloc. */ + if (srel == NULL) + { + char *name; + + if (dynobj == NULL) + hplink->root.dynobj = dynobj = abfd; + + name = bfd_elf_string_from_elf_section + (abfd, + elf_elfheader (abfd)->e_shstrndx, + elf_section_data (sec)->rel_hdr.sh_name); + if (name == NULL) + { + (*_bfd_error_handler) + (_("Could not find relocation section for %s"), + sec->name); + bfd_set_error (bfd_error_bad_value); + return false; + } + + if ((need_entry & NEED_STUBREL)) + { + bfd_size_type len = strlen (name) + sizeof (STUB_SUFFIX); + char *newname = bfd_malloc (len); + + if (newname == NULL) + return false; + strcpy (newname, name); + strcpy (newname + len - sizeof (STUB_SUFFIX), + STUB_SUFFIX); + name = newname; + } + + srel = bfd_get_section_by_name (dynobj, name); + if (srel == NULL) + { + flagword flags; + + srel = bfd_make_section (dynobj, name); + flags = (SEC_HAS_CONTENTS | SEC_READONLY + | SEC_IN_MEMORY | SEC_LINKER_CREATED); + if ((sec->flags & SEC_ALLOC) != 0) + flags |= SEC_ALLOC | SEC_LOAD; + if (srel == NULL + || !bfd_set_section_flags (dynobj, srel, flags) + || !bfd_set_section_alignment (dynobj, srel, 2)) + return false; + } + else if ((need_entry & NEED_STUBREL)) + free (name); + + if ((need_entry & NEED_STUBREL)) + stubreloc = srel; + else + sreloc = srel; + } + +#if ! LONG_BRANCH_PIC_IN_SHLIB + /* If this is a function call, we only need one dynamic + reloc for the stub as all calls to a particular + function will go through the same stub. Actually, a + long branch stub needs two relocations, but we count + on some intelligence on the part of the dynamic + linker. */ + if ((need_entry & NEED_STUBREL)) + { + doit = h->stub_reloc_sec != stubreloc; + h->stub_reloc_sec = stubreloc; + } + else +#endif + doit = 1; + + if (doit) + { + srel->_raw_size += sizeof (Elf32_External_Rela); + + /* Keep track of relocations we have entered for + this global symbol, so that we can discard them + later if necessary. */ + if (!info->shared + || (h != NULL + && (! IS_ABSOLUTE_RELOC (rtype) + || (need_entry & NEED_STUBREL)))) + { + struct elf32_hppa_dyn_reloc_entry *p; + + for (p = h->reloc_entries; p != NULL; p = p->next) + if (p->section == srel) + break; + + if (p == NULL) + { + p = ((struct elf32_hppa_dyn_reloc_entry *) + bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); + if (p == NULL) + return false; + p->next = h->reloc_entries; + h->reloc_entries = p; + p->section = srel; + p->count = 0; + } + + /* NEED_STUBREL and NEED_DYNREL are never both + set. Leave the count at zero for the + NEED_STUBREL case as we only ever have one + stub reloc per section per symbol, and this + simplifies code to discard unneeded relocs. */ + if (! (need_entry & NEED_STUBREL)) + ++p->count; + } + } } + } + } + + return true; +} + +/* Return the section that should be marked against garbage collection + for a given relocation. */ + +static asection * +elf32_hppa_gc_mark_hook (abfd, info, rel, h, sym) + bfd *abfd; + struct bfd_link_info *info ATTRIBUTE_UNUSED; + Elf_Internal_Rela *rel; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; +{ + if (h != NULL) + { + switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) + { + case R_PARISC_GNU_VTINHERIT: + case R_PARISC_GNU_VTENTRY: break; default: - abort (); - break; + switch (h->root.type) + { + case bfd_link_hash_defined: + case bfd_link_hash_defweak: + return h->root.u.def.section; + + case bfd_link_hash_common: + return h->root.u.c.p->section; + + default: + break; + } } - break; + } + else + { + if (!(elf_bad_symtab (abfd) + && ELF_ST_BIND (sym->st_info) != STB_LOCAL) + && ! ((sym->st_shndx <= 0 || sym->st_shndx >= SHN_LORESERVE) + && sym->st_shndx != SHN_COMMON)) + { + return bfd_section_from_elf_index (abfd, sym->st_shndx); + } + } + + return NULL; +} + +/* Update the got and plt entry reference counts for the section being + removed. */ + +static boolean +elf32_hppa_gc_sweep_hook (abfd, info, sec, relocs) + bfd *abfd; + struct bfd_link_info *info ATTRIBUTE_UNUSED; + asection *sec; + const Elf_Internal_Rela *relocs; +{ + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + bfd_signed_vma *local_plt_refcounts; + const Elf_Internal_Rela *rel, *relend; + unsigned long r_symndx; + struct elf_link_hash_entry *h; + struct elf32_hppa_link_hash_table *hplink; + bfd *dynobj; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_refcounts (abfd); + local_plt_refcounts = local_got_refcounts; + if (local_plt_refcounts != NULL) + local_plt_refcounts += symtab_hdr->sh_info; + hplink = hppa_link_hash_table (info); + dynobj = hplink->root.dynobj; + if (dynobj == NULL) + return true; + + relend = relocs + sec->reloc_count; + for (rel = relocs; rel < relend; rel++) + switch ((unsigned int) ELF32_R_TYPE (rel->r_info)) + { + case R_PARISC_DLTIND14F: + case R_PARISC_DLTIND14R: + case R_PARISC_DLTIND21L: + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + if (h->got.refcount > 0) + h->got.refcount -= 1; + } + else if (local_got_refcounts != NULL) + { + if (local_got_refcounts[r_symndx] > 0) + local_got_refcounts[r_symndx] -= 1; + } + break; + + case R_PARISC_PCREL12F: + case R_PARISC_PCREL17C: + case R_PARISC_PCREL17F: + case R_PARISC_PCREL22F: + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + if (h->plt.refcount > 0) + h->plt.refcount -= 1; + } + break; + + case R_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; +{ + if ((h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0) + h->dynindx = -1; + if (! ((struct elf32_hppa_link_hash_entry *) h)->plabel) + { + h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + h->plt.offset = (bfd_vma) -1; + } +} + +/* This is the condition under which elf32_hppa_finish_dynamic_symbol + will be called from elflink.h. If elflink.h doesn't call our + finish_dynamic_symbol routine, we'll need to do something about + initializing any .plt and .got entries in elf32_hppa_relocate_section. */ +#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \ + ((DYN) \ + && ((INFO)->shared \ + || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \ + && ((H)->dynindx != -1 \ + || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0)) + +/* Adjust a symbol defined by a dynamic object and referenced by a + regular object. The current definition is in some section of the + dynamic object, but we're not including those sections. We have to + change the definition to something the rest of the link can + understand. */ + +static 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 (!info->shared + && h->plt.refcount > 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 + && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0) + { + ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1; + } + + if (h->plt.refcount <= 0 + || ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 + && h->root.type != bfd_link_hash_defweak + && ! ((struct elf32_hppa_link_hash_entry *) h)->plabel + && (!info->shared || info->symbolic))) + { + /* The .plt entry is not needed when: + a) Garbage collection has removed all references to the + symbol, or + b) We know for certain the symbol is defined in this + object, and it's not a weak definition, nor is the symbol + used by a plabel relocation. Either this object is the + application or we are doing a shared symbolic link. */ + + /* As a special sop to the hppa ABI, we keep a .plt entry + for functions in sections containing PIC code. */ + if (((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call) + ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; + else + { + h->plt.offset = (bfd_vma) -1; + h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + } + } + + return true; + } + + /* If 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) + { + if (h->weakdef->root.type != bfd_link_hash_defined + && h->weakdef->root.type != bfd_link_hash_defweak) + abort (); + h->root.u.def.section = h->weakdef->root.u.def.section; + h->root.u.def.value = h->weakdef->root.u.def.value; + return true; + } + + /* 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 ATTRIBUTE_UNUSED; +{ + if (! (h->plt.refcount > 0 + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + && (h->root.u.def.section->flags & SEC_HAS_GOT_REF) != 0)) + { + h->plt.offset = (bfd_vma) -1; + h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + return true; + } + + h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; + ((struct elf32_hppa_link_hash_entry *) h)->maybe_pic_call = 1; + ((struct elf32_hppa_link_hash_entry *) h)->pic_call = 1; + + return true; +} + +/* Allocate space in .plt, .got and associated reloc sections for + global syms. */ + +static boolean +allocate_plt_and_got_and_discard_relocs (h, inf) + struct elf_link_hash_entry *h; + PTR inf; +{ + struct bfd_link_info *info; + struct elf32_hppa_link_hash_table *hplink; + asection *s; + struct elf32_hppa_link_hash_entry *eh; + + if (h->root.type == bfd_link_hash_indirect + || h->root.type == bfd_link_hash_warning) + return true; + + info = (struct bfd_link_info *) inf; + hplink = hppa_link_hash_table (info); + if ((hplink->root.dynamic_sections_created + && h->plt.refcount > 0) + || ((struct elf32_hppa_link_hash_entry *) h)->pic_call) + { + /* Make sure this symbol is output as a dynamic symbol. + Undefined weak syms won't yet be marked as dynamic. */ + if (h->dynindx == -1 + && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 + && h->type != STT_PARISC_MILLI + && !((struct elf32_hppa_link_hash_entry *) h)->pic_call) + { + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + + /* Make an entry in the .plt section. */ + s = hplink->splt; + h->plt.offset = s->_raw_size; + if (PLABEL_PLT_ENTRY_SIZE != PLT_ENTRY_SIZE + && ((struct elf32_hppa_link_hash_entry *) h)->plabel + && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) + { + /* Add some extra space for the dynamic linker to use. */ + s->_raw_size += PLABEL_PLT_ENTRY_SIZE; + } + else + s->_raw_size += PLT_ENTRY_SIZE; + + if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call + && WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, h)) + { + /* We also need to make an entry in the .rela.plt section. */ + hplink->srelplt->_raw_size += sizeof (Elf32_External_Rela); + hplink->need_plt_stub = 1; + } + } + else + { + h->plt.offset = (bfd_vma) -1; + h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; + } + + if (h->got.refcount > 0) + { + boolean dyn; + + /* Make sure this symbol is output as a dynamic symbol. + Undefined weak syms won't yet be marked as dynamic. */ + if (h->dynindx == -1 + && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 + && h->type != STT_PARISC_MILLI) + { + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + + s = hplink->sgot; + h->got.offset = s->_raw_size; + s->_raw_size += GOT_ENTRY_SIZE; + dyn = hplink->root.dynamic_sections_created; + if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)) + hplink->srelgot->_raw_size += sizeof (Elf32_External_Rela); + } + else + h->got.offset = (bfd_vma) -1; + + /* If this is a -Bsymbolic shared link, then we need to discard all + space allocated for dynamic relocs against symbols defined in a + regular object. For the normal shared case, discard space for + relocs that have become local due to symbol visibility changes. + For the non-shared case, discard space for symbols which turn out + to need copy relocs or are not dynamic. We also need to lose + relocs we've allocated for long branch stubs if we know we won't + be generating a stub. */ + + eh = (struct elf32_hppa_link_hash_entry *) h; + if (eh->reloc_entries == NULL) + return true; + + /* First handle the non-shared case. */ + if (!info->shared + && (h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 + && (((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) + || (hplink->root.dynamic_sections_created + && (h->root.type == bfd_link_hash_undefweak + || h->root.type == bfd_link_hash_undefined)))) + { + /* Make sure this symbol is output as a dynamic symbol. + Undefined weak syms won't yet be marked as dynamic. */ + if (h->dynindx == -1 + && (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0 + && h->type != STT_PARISC_MILLI) + { + if (! bfd_elf32_link_record_dynamic_symbol (info, h)) + return false; + } + + /* If that succeeded, we know we'll be keeping all the relocs. */ + if (h->dynindx != -1) + return true; + } +#if ! LONG_BRANCH_PIC_IN_SHLIB && LONG_BRANCH_VIA_PLT + /* Handle the stub reloc case. If we have a plt entry for the + function, we won't be needing long branch stubs. c->count will + only be zero for stub relocs, which provides a handy way of + flagging these relocs, and means we need do nothing special for + the forced local and symbolic link case. */ + if (eh->stub_reloc_sec != NULL + && eh->elf.plt.offset != (bfd_vma) -1) + { + struct elf32_hppa_dyn_reloc_entry *c; - case R_HPPA_PLABEL: - switch (format) - { - case 11: - switch (field) - { - case e_fsel: - final_type = R_HPPA_PLABEL_11; - break; - case e_rsel: - final_type = R_HPPA_PLABEL_R11; - break; - default: - abort (); - break; - } - break; + for (c = eh->reloc_entries; c != NULL; c = c->next) + if (c->count == 0) + c->section->_raw_size -= sizeof (Elf32_External_Rela); + } +#endif + + /* Discard any relocs in the non-shared case. For the shared case, + if a symbol has been forced local or we have found a regular + definition for the symbolic link case, then we won't be needing + any relocs. */ + if (!info->shared + || ((eh->elf.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) != 0 + && ((eh->elf.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0 + || info->symbolic))) + { + struct elf32_hppa_dyn_reloc_entry *c; - case 14: - switch (field) - { - case e_fsel: - final_type = R_HPPA_PLABEL_14; - break; - case e_rsel: - final_type = R_HPPA_PLABEL_R14; - break; - default: - abort (); - break; - } - break; + for (c = eh->reloc_entries; c != NULL; c = c->next) + c->section->_raw_size -= c->count * sizeof (Elf32_External_Rela); + } - case 21: - switch (field) - { - case e_lsel: - final_type = R_HPPA_PLABEL_L21; - break; - default: - abort (); - break; - } - break; + return true; +} - case 32: - switch (field) - { - case e_fsel: - final_type = R_HPPA_PLABEL_32; - break; - default: - abort (); - break; - } - break; +/* This function is called via elf_link_hash_traverse to force + millicode symbols local so they do not end up as globals in the + dynamic symbol table. We ought to be able to do this in + adjust_dynamic_symbol, but our adjust_dynamic_symbol is not called + for all dynamic symbols. Arguably, this is a bug in + elf_adjust_dynamic_symbol. */ - default: - abort (); - break; +static boolean +clobber_millicode_symbols (h, info) + struct elf_link_hash_entry *h; + struct bfd_link_info *info; +{ + /* We only want to remove these from the dynamic symbol table. + Therefore we do not leave ELF_LINK_FORCED_LOCAL set. */ + if (h->type == STT_PARISC_MILLI) + { + unsigned short oldflags = h->elf_link_hash_flags; + h->elf_link_hash_flags |= ELF_LINK_FORCED_LOCAL; + elf32_hppa_hide_symbol (info, h); + h->elf_link_hash_flags &= ~ELF_LINK_FORCED_LOCAL; + h->elf_link_hash_flags |= oldflags & ELF_LINK_FORCED_LOCAL; + } + return true; +} + +/* 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; + bfd *i; + asection *s; + boolean relocs; + boolean reltext; + + hplink = hppa_link_hash_table (info); + dynobj = hplink->root.dynobj; + if (dynobj == NULL) + abort (); + + if (hplink->root.dynamic_sections_created) + { + /* Set the contents of the .interp section to the interpreter. */ + if (! info->shared) + { + s = bfd_get_section_by_name (dynobj, ".interp"); + if (s == NULL) + abort (); + s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; + s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; } + /* Force millicode symbols local. */ + elf_link_hash_traverse (&hplink->root, + clobber_millicode_symbols, + info); + } + else + { + /* Run through the function symbols, looking for any that are + PIC, and allocate space for the necessary .plt entries so + that %r19 will be set up. */ + if (! info->shared) + elf_link_hash_traverse (&hplink->root, + hppa_handle_PIC_calls, + info); + } - case R_HPPA_ABS_CALL: - switch (format) + /* Set up .got and .plt offsets for local syms. */ + for (i = info->input_bfds; i; i = i->link_next) + { + bfd_signed_vma *local_got; + bfd_signed_vma *end_local_got; + bfd_signed_vma *local_plt; + bfd_signed_vma *end_local_plt; + bfd_size_type locsymcount; + Elf_Internal_Shdr *symtab_hdr; + asection *srel; + + if (bfd_get_flavour (i) != bfd_target_elf_flavour) + continue; + + local_got = elf_local_got_refcounts (i); + if (!local_got) + continue; + + symtab_hdr = &elf_tdata (i)->symtab_hdr; + locsymcount = symtab_hdr->sh_info; + end_local_got = local_got + locsymcount; + s = hplink->sgot; + srel = hplink->srelgot; + for (; local_got < end_local_got; ++local_got) { - case 11: - switch (field) + if (*local_got > 0) { - case e_rsel: - final_type = R_HPPA_ABS_CALL_R11; - break; - case e_rssel: - final_type = R_HPPA_ABS_CALL_RS11; - break; - case e_rdsel: - final_type = R_HPPA_ABS_CALL_RD11; - break; - case e_fsel: - final_type = R_HPPA_ABS_CALL_11; - break; - default: - abort (); - break; + *local_got = s->_raw_size; + s->_raw_size += GOT_ENTRY_SIZE; + if (info->shared) + srel->_raw_size += sizeof (Elf32_External_Rela); } - break; + else + *local_got = (bfd_vma) -1; + } - case 14: - switch (field) + local_plt = end_local_got; + end_local_plt = local_plt + locsymcount; + if (! hplink->root.dynamic_sections_created) + { + /* Won't be used, but be safe. */ + for (; local_plt < end_local_plt; ++local_plt) + *local_plt = (bfd_vma) -1; + } + else + { + s = hplink->splt; + srel = hplink->srelplt; + for (; local_plt < end_local_plt; ++local_plt) { - case e_rsel: - final_type = R_HPPA_ABS_CALL_R14; - break; - case e_rssel: - final_type = R_HPPA_ABS_CALL_RS14; - break; - case e_rdsel: - final_type = R_HPPA_ABS_CALL_RD14; - break; - case e_rrsel: - final_type = R_HPPA_ABS_CALL_RR14; - break; - case e_fsel: - final_type = R_HPPA_ABS_CALL_14; - break; - default: - abort (); - break; + if (*local_plt > 0) + { + *local_plt = s->_raw_size; + s->_raw_size += PLT_ENTRY_SIZE; + if (info->shared) + srel->_raw_size += sizeof (Elf32_External_Rela); + } + else + *local_plt = (bfd_vma) -1; } - break; + } + } - case 17: - switch (field) + /* Allocate global sym .plt and .got entries. Also discard all + unneeded relocs. */ + elf_link_hash_traverse (&hplink->root, + allocate_plt_and_got_and_discard_relocs, + (PTR) info); + + /* The check_relocs and adjust_dynamic_symbol entry points have + determined the sizes of the various dynamic sections. Allocate + memory for them. */ + relocs = false; + reltext = false; + for (s = dynobj->sections; s != NULL; s = s->next) + { + if ((s->flags & SEC_LINKER_CREATED) == 0) + continue; + + if (s == hplink->splt) + { + if (hplink->need_plt_stub) { - case e_rsel: - final_type = R_HPPA_ABS_CALL_R17; - break; - case e_rssel: - final_type = R_HPPA_ABS_CALL_RS17; - break; - case e_rdsel: - final_type = R_HPPA_ABS_CALL_RD17; - break; - case e_rrsel: - final_type = R_HPPA_ABS_CALL_RR17; - break; - case e_fsel: - final_type = R_HPPA_ABS_CALL_17; - break; - default: - abort (); - break; + /* Make space for the plt stub at the end of the .plt + section. We want this stub right at the end, up + against the .got section. */ + int gotalign = bfd_section_alignment (dynobj, hplink->sgot); + int pltalign = bfd_section_alignment (dynobj, s); + bfd_size_type mask; + + if (gotalign > pltalign) + bfd_set_section_alignment (dynobj, s, gotalign); + mask = ((bfd_size_type) 1 << gotalign) - 1; + s->_raw_size = (s->_raw_size + sizeof (plt_stub) + mask) & ~mask; } - break; - - case 21: - switch (field) + } + else if (s == hplink->sgot) + ; + else if (strncmp (bfd_get_section_name (dynobj, s), ".rela", 5) == 0) + { + if (s->_raw_size != 0) { - case e_lsel: - final_type = R_HPPA_ABS_CALL_L21; - break; - case e_lssel: - final_type = R_HPPA_ABS_CALL_LS21; - break; - case e_ldsel: - final_type = R_HPPA_ABS_CALL_LD21; - break; - case e_lrsel: - final_type = R_HPPA_ABS_CALL_LR21; - break; - default: - abort (); - break; + asection *target; + const char *outname; + + /* Remember whether there are any reloc sections other + than .rela.plt. */ + if (s != hplink->srelplt) + relocs = true; + + /* If this relocation section applies to a read only + section, then we probably need a DT_TEXTREL entry. */ + outname = bfd_get_section_name (output_bfd, + s->output_section); + target = bfd_get_section_by_name (output_bfd, outname + 5); + if (target != NULL + && (target->flags & SEC_READONLY) != 0 + && (target->flags & SEC_ALLOC) != 0) + reltext = true; + + /* We use the reloc_count field as a counter if we need + to copy relocs into the output file. */ + s->reloc_count = 0; } - break; + } + else + { + /* It's not one of our sections, so don't allocate space. */ + continue; + } - default: - abort (); - break; + 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; } - break; + /* 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; + } - case R_HPPA_UNWIND: - final_type = R_HPPA_UNWIND_ENTRY; - break; + 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. */ +#define add_dynamic_entry(TAG, VAL) \ + bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) + + if (!add_dynamic_entry (DT_PLTGOT, 0)) + return false; + + /* Add some entries to the .dynamic section. We fill in the + values later, in elf32_hppa_finish_dynamic_sections, but we + must add the entries now so that we get the correct size for + the .dynamic section. The DT_DEBUG entry is filled in by the + dynamic linker and used by the debugger. */ + if (!info->shared) + { + if (!add_dynamic_entry (DT_DEBUG, 0)) + return false; + } + if (hplink->srelplt->_raw_size != 0) + { + if (!add_dynamic_entry (DT_PLTRELSZ, 0) + || !add_dynamic_entry (DT_PLTREL, DT_RELA) + || !add_dynamic_entry (DT_JMPREL, 0)) + return false; + } - case R_HPPA_COMPLEX: - case R_HPPA_COMPLEX_PCREL_CALL: - case R_HPPA_COMPLEX_ABS_CALL: - /* The code originally here was horribly broken, and apparently - never used. Zap it. When we need complex relocations rewrite - it correctly! */ - abort (); - break; - - default: - final_type = base_type; - break; + if (relocs) + { + if (!add_dynamic_entry (DT_RELA, 0) + || !add_dynamic_entry (DT_RELASZ, 0) + || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) + return false; + } + + if (reltext) + { + if (!add_dynamic_entry (DT_TEXTREL, 0)) + return false; + info->flags |= DF_TEXTREL; + } } +#undef add_dynamic_entry - return final_types; + return true; } -#undef final_type +/* External entry points for sizing and building linker stubs. */ +/* Determine and set the size of the stub section for a final link. -/* Actually perform a relocation. */ + 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. */ -static bfd_reloc_status_type -hppa_elf_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, - error_message) - bfd *abfd; - arelent *reloc_entry; - asymbol *symbol_in; - PTR data; - asection *input_section; +boolean +elf32_hppa_size_stubs (output_bfd, stub_bfd, info, multi_subspace, group_size, + add_stub_section, layout_sections_again) bfd *output_bfd; - char **error_message; + 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)); { - unsigned long insn; - long sym_value = 0; - unsigned long addr = reloc_entry->address; - bfd_byte *hit_data = addr + (bfd_byte *) data; - unsigned long r_type = reloc_entry->howto->type; - unsigned long r_field = e_fsel; - boolean r_pcrel = reloc_entry->howto->pc_relative; - unsigned r_format = reloc_entry->howto->bitsize; - long r_addend = reloc_entry->addend; - - /* If only performing a partial link, get out early. */ - if (output_bfd) + bfd *input_bfd; + asection *section; + asection **input_list, **list; + Elf_Internal_Sym *local_syms, **all_local_syms; + unsigned int bfd_indx, bfd_count; + int top_id, top_index; + struct elf32_hppa_link_hash_table *hplink; + bfd_size_type stub_group_size; + boolean stubs_always_before_branch; + boolean stub_changed = 0; + boolean ret = 0; + bfd_size_type amt; + + hplink = hppa_link_hash_table (info); + + /* Stash our params away. */ + hplink->stub_bfd = stub_bfd; + hplink->multi_subspace = multi_subspace; + hplink->add_stub_section = add_stub_section; + hplink->layout_sections_again = layout_sections_again; + stubs_always_before_branch = group_size < 0; + if (group_size < 0) + stub_group_size = -group_size; + else + stub_group_size = group_size; + if (stub_group_size == 1) { - reloc_entry->address += input_section->output_offset; - return bfd_reloc_ok; + /* 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; } - /* If performing final link and the symbol we're relocating against - is undefined, then return an error. */ - if (symbol_in && symbol_in->section == &bfd_und_section) - return bfd_reloc_undefined; - - /* Get the final relocated value. */ - sym_value = get_symbol_value (symbol_in); - - /* Compute the value of $global$. - FIXME: None of this should be necessary. $global$ is just a - marker and shouldn't really figure into these computations. - - Once that's fixed we'll need to teach this backend to change - DP-relative relocations involving symbols in the text section - to be simple absolute relocations. */ - if (!global_sym_defined) + /* 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) { - if (global_symbol) + bfd_count += 1; + for (section = input_bfd->sections; + section != NULL; + section = section->next) { - global_value = (global_symbol->value - + global_symbol->section->output_section->vma - + global_symbol->section->output_offset); - GOT_value = global_value; - global_sym_defined++; + if (top_id < section->id) + top_id = section->id; } } - /* Get the instruction word. */ - insn = bfd_get_32 (abfd, hit_data); + amt = sizeof (struct map_stub) * (top_id + 1); + hplink->stub_group = (struct map_stub *) bfd_zmalloc (amt); + if (hplink->stub_group == NULL) + return false; - /* Relocate the value based on one of the basic relocation types + /* Make a list of input sections for each output section included in + the link. - basic_type_1: relocation is relative to $global$ - basic_type_2: relocation is relative to the current GOT - basic_type_3: relocation is an absolute call - basic_type_4: relocation is an PC-relative call - basic_type_5: relocation is plabel reference - basic_type_6: relocation is an unwind table relocation - extended_type: unimplemented */ + 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; + } - switch (r_type) + amt = sizeof (asection *) * (top_index + 1); + input_list = (asection **) bfd_malloc (amt); + if (input_list == NULL) + return false; + + /* For sections we aren't interested in, mark their entries with a + value we can check later. */ + list = input_list + top_index; + do + *list = bfd_abs_section_ptr; + while (list-- != input_list); + + for (section = output_bfd->sections; + section != NULL; + section = section->next) { - case R_HPPA_NONE: - break; + if ((section->flags & SEC_CODE) != 0) + input_list[section->index] = NULL; + } - /* Handle all the basic type 1 relocations. */ - case R_HPPA_32: - case R_HPPA_11: - case R_HPPA_14: - case R_HPPA_17: - r_field = e_fsel; - goto do_basic_type_1; - case R_HPPA_L21: - r_field = e_lsel; - goto do_basic_type_1; - case R_HPPA_R11: - case R_HPPA_R14: - case R_HPPA_R17: - r_field = e_rsel; - goto do_basic_type_1; - case R_HPPA_LS21: - r_field = e_lssel; - goto do_basic_type_1; - case R_HPPA_RS11: - case R_HPPA_RS14: - case R_HPPA_RS17: - r_field = e_ldsel; - goto do_basic_type_1; - case R_HPPA_LD21: - r_field = e_ldsel; - goto do_basic_type_1; - case R_HPPA_RD11: - case R_HPPA_RD14: - case R_HPPA_RD17: - r_field = e_rdsel; - goto do_basic_type_1; - case R_HPPA_LR21: - r_field = e_lrsel; - goto do_basic_type_1; - case R_HPPA_RR14: - case R_HPPA_RR17: - r_field = e_rrsel; + /* 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; + } + } + } + } - do_basic_type_1: - insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr, - sym_value, r_addend, r_format, - r_field, r_pcrel); - break; + /* 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; - /* Handle all the basic type 2 relocations. */ - case R_HPPA_GOTOFF_11: - case R_HPPA_GOTOFF_14: - r_field = e_fsel; - goto do_basic_type_2; - case R_HPPA_GOTOFF_L21: - r_field = e_lsel; - goto do_basic_type_2; - case R_HPPA_GOTOFF_R11: - case R_HPPA_GOTOFF_R14: - r_field = e_rsel; - goto do_basic_type_2; - case R_HPPA_GOTOFF_LS21: - r_field = e_lssel; - goto do_basic_type_2; - case R_HPPA_GOTOFF_RS11: - case R_HPPA_GOTOFF_RS14: - r_field = e_rssel; - goto do_basic_type_2; - case R_HPPA_GOTOFF_LD21: - r_field = e_ldsel; - goto do_basic_type_2; - case R_HPPA_GOTOFF_RD11: - case R_HPPA_GOTOFF_RD14: - r_field = e_rdsel; - goto do_basic_type_2; - case R_HPPA_GOTOFF_LR21: - r_field = e_lrsel; - goto do_basic_type_2; - case R_HPPA_GOTOFF_RR14: - r_field = e_rrsel; + 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); - do_basic_type_2: - sym_value -= GOT_value; - insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr, - sym_value, r_addend, r_format, - r_field, r_pcrel); - break; + /* 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. */ + amt = sizeof (Elf_Internal_Sym *) * bfd_count; + all_local_syms = (Elf_Internal_Sym **) bfd_zmalloc (amt); + if (all_local_syms == NULL) + return false; + + /* Walk over all the input BFDs, swapping in local symbols. + If we are creating a shared library, create hash entries for the + export stubs. */ + for (input_bfd = info->input_bfds, bfd_indx = 0; + input_bfd != NULL; + input_bfd = input_bfd->link_next, bfd_indx++) + { + Elf_Internal_Shdr *symtab_hdr; + Elf_Internal_Sym *isym; + Elf32_External_Sym *ext_syms, *esym, *end_sy; + bfd_size_type sec_size; + + /* We'll need the symbol table in a second. */ + symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + if (symtab_hdr->sh_info == 0) + continue; + + /* We need an array of the local symbols attached to the input bfd. + Unfortunately, we're going to have to read & swap them in. */ + sec_size = symtab_hdr->sh_info; + sec_size *= sizeof (Elf_Internal_Sym); + local_syms = (Elf_Internal_Sym *) bfd_malloc (sec_size); + if (local_syms == NULL) + { + goto error_ret_free_local; + } + all_local_syms[bfd_indx] = local_syms; + sec_size = symtab_hdr->sh_info; + sec_size *= sizeof (Elf32_External_Sym); + ext_syms = (Elf32_External_Sym *) bfd_malloc (sec_size); + if (ext_syms == NULL) + { + goto error_ret_free_local; + } - /* Handle all the basic type 3 relocations. */ - case R_HPPA_ABS_CALL_11: - case R_HPPA_ABS_CALL_14: - case R_HPPA_ABS_CALL_17: - r_field = e_fsel; - goto do_basic_type_3; - case R_HPPA_ABS_CALL_L21: - r_field = e_lsel; - goto do_basic_type_3; - case R_HPPA_ABS_CALL_R11: - case R_HPPA_ABS_CALL_R14: - case R_HPPA_ABS_CALL_R17: - r_field = e_rsel; - goto do_basic_type_3; - case R_HPPA_ABS_CALL_LS21: - r_field = e_lssel; - goto do_basic_type_3; - case R_HPPA_ABS_CALL_RS11: - case R_HPPA_ABS_CALL_RS14: - case R_HPPA_ABS_CALL_RS17: - r_field = e_rssel; - goto do_basic_type_3; - case R_HPPA_ABS_CALL_LD21: - r_field = e_ldsel; - goto do_basic_type_3; - case R_HPPA_ABS_CALL_RD11: - case R_HPPA_ABS_CALL_RD14: - case R_HPPA_ABS_CALL_RD17: - r_field = e_rdsel; - goto do_basic_type_3; - case R_HPPA_ABS_CALL_LR21: - r_field = e_lrsel; - goto do_basic_type_3; - case R_HPPA_ABS_CALL_RR14: - case R_HPPA_ABS_CALL_RR17: - r_field = e_rrsel; + if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 + || (bfd_bread (ext_syms, sec_size, input_bfd) != sec_size)) + { + free (ext_syms); + goto error_ret_free_local; + } - do_basic_type_3: - insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr, - sym_value, r_addend, r_format, - r_field, r_pcrel); - break; + /* 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; - /* Handle all the basic type 4 relocations. */ - case R_HPPA_PCREL_CALL_11: - case R_HPPA_PCREL_CALL_14: - case R_HPPA_PCREL_CALL_17: - r_field = e_fsel; - goto do_basic_type_4; - case R_HPPA_PCREL_CALL_L21: - r_field = e_lsel; - goto do_basic_type_4; - case R_HPPA_PCREL_CALL_R11: - case R_HPPA_PCREL_CALL_R14: - case R_HPPA_PCREL_CALL_R17: - r_field = e_rsel; - goto do_basic_type_4; - case R_HPPA_PCREL_CALL_LS21: - r_field = e_lssel; - goto do_basic_type_4; - case R_HPPA_PCREL_CALL_RS11: - case R_HPPA_PCREL_CALL_RS14: - case R_HPPA_PCREL_CALL_RS17: - r_field = e_rssel; - goto do_basic_type_4; - case R_HPPA_PCREL_CALL_LD21: - r_field = e_ldsel; - goto do_basic_type_4; - case R_HPPA_PCREL_CALL_RD11: - case R_HPPA_PCREL_CALL_RD14: - case R_HPPA_PCREL_CALL_RD17: - r_field = e_rdsel; - goto do_basic_type_4; - case R_HPPA_PCREL_CALL_LR21: - r_field = e_lrsel; - goto do_basic_type_4; - case R_HPPA_PCREL_CALL_RR14: - case R_HPPA_PCREL_CALL_RR17: - r_field = e_rrsel; + name = bfd_malloc ((bfd_size_type) strlen (section->name) + + sizeof STUB_SUFFIX + + 5); + if (name == NULL) + return false; + sprintf (name, ".rela%s%s", section->name, STUB_SUFFIX); + reloc_sec = bfd_get_section_by_name (hplink->root.dynobj, name); + hplink->stub_group[section->id].reloc_sec = reloc_sec; + free (name); + } +#endif - do_basic_type_4: - insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr, - sym_value, r_addend, r_format, - r_field, r_pcrel); - break; + 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_archive_filename (input_bfd), + stub_name); + } + } + } + } + } - /* Handle all the basic type 5 relocations. */ - case R_HPPA_PLABEL_32: - case R_HPPA_PLABEL_11: - case R_HPPA_PLABEL_14: - r_field = e_fsel; - goto do_basic_type_5; - case R_HPPA_PLABEL_L21: - r_field = e_lsel; - goto do_basic_type_5; - case R_HPPA_PLABEL_R11: - case R_HPPA_PLABEL_R14: - r_field = e_rsel; - do_basic_type_5: - insn = hppa_elf_relocate_insn (abfd, input_section, insn, addr, - sym_value, r_addend, r_format, - r_field, r_pcrel); - break; + while (1) + { + asection *stub_sec; - /* Handle all basic type 6 relocations. */ - case R_HPPA_UNWIND_ENTRY: - case R_HPPA_UNWIND_ENTRIES: - hppa_elf_relocate_unwind_table (abfd, data, addr, - sym_value, r_addend, - r_type, r_field); - return bfd_reloc_ok; - - /* This is a linker internal relocation. */ - case R_HPPA_STUB_CALL_17: - /* This relocation is for a branch to a long branch stub. - Change instruction to a BLE,N. It may also be necessary - to interchange the branch and its delay slot. - The original instruction stream is - - bl ,r ; call foo using register r as - ; the return pointer - XXX ; delay slot instruction - - The new instruction stream will be: - - XXX ; delay slot instruction - ble ; call the long call stub for foo - ; using r31 as the return pointer - - This braindamage is necessary because the compiler may put - an instruction which uses %r31 in the delay slot of the original - call. By changing the call instruction from a "bl" to a "ble" - %r31 gets clobbered before the delay slot executes. This - also means the stub has to play funny games to make sure - we return to the instruction just after the BLE rather than - two instructions after the BLE. - - We do not interchange the branch and delay slot if the delay - slot was already nullified, or if the instruction in the delay - slot modifies the return pointer to avoid an unconditional - jump after the call returns (GCC optimization). - - None of this horseshit would be necessary if we put the - stubs between functions and just redirected the "bl" to - the stub. Live and learn. */ - - /* Is this instruction nullified? (does this ever happen?) */ - if (insn & 2) - { - insn = BLE_N_XXX_0_0; - bfd_put_32 (abfd, insn, hit_data); - r_type = R_HPPA_ABS_CALL_17; - r_pcrel = 0; - insn = hppa_elf_relocate_insn (abfd, input_section, insn, - addr, sym_value, r_addend, - r_format, r_field, r_pcrel); - } - else + for (input_bfd = info->input_bfds, bfd_indx = 0; + input_bfd != NULL; + input_bfd = input_bfd->link_next, bfd_indx++) { - /* So much for the trivial case... */ - unsigned long old_delay_slot_insn = bfd_get_32 (abfd, hit_data + 4); - unsigned rtn_reg = (insn & 0x03e00000) >> 21; + Elf_Internal_Shdr *symtab_hdr; - if (get_opcode (old_delay_slot_insn) == LDO) - { - unsigned ldo_src_reg = (old_delay_slot_insn & 0x03e00000) >> 21; - unsigned ldo_target_reg = (old_delay_slot_insn & 0x001f0000) >> 16; + /* We'll need the symbol table in a second. */ + symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; + if (symtab_hdr->sh_info == 0) + continue; - /* If the target of the LDO is the same as the return - register then there is no reordering. We can leave the - instuction as a non-nullified BLE in this case. + local_syms = all_local_syms[bfd_indx]; - FIXME: This test looks wrong. If we had a ble using - ldo_target_reg as the *source* we'd fuck this up. */ - if (ldo_target_reg == rtn_reg) + /* Walk over each section attached to the input bfd. */ + for (section = input_bfd->sections; + section != NULL; + section = section->next) + { + Elf_Internal_Shdr *input_rel_hdr; + Elf32_External_Rela *external_relocs, *erelaend, *erela; + Elf_Internal_Rela *internal_relocs, *irelaend, *irela; + + /* If there aren't any relocs, then there's nothing more + to do. */ + if ((section->flags & SEC_RELOC) == 0 + || section->reloc_count == 0) + continue; + + /* If this section is a link-once section that will be + discarded, then don't create any stubs. */ + if (section->output_section == NULL + || section->output_section->owner != output_bfd) + continue; + + /* Allocate space for the external relocations. */ + amt = section->reloc_count; + amt *= sizeof (Elf32_External_Rela); + external_relocs = (Elf32_External_Rela *) bfd_malloc (amt); + if (external_relocs == NULL) { - unsigned long new_delay_slot_insn = old_delay_slot_insn; - - BFD_ASSERT (ldo_src_reg == ldo_target_reg); - new_delay_slot_insn &= 0xfc00ffff; - new_delay_slot_insn |= ((31 << 21) | (31 << 16)); - bfd_put_32 (abfd, new_delay_slot_insn, hit_data + 4); - insn = BLE_XXX_0_0; - r_type = R_HPPA_ABS_CALL_17; - r_pcrel = 0; - insn = hppa_elf_relocate_insn (abfd, input_section, insn, - addr, sym_value, r_addend, - r_format, r_field, r_pcrel); - bfd_put_32 (abfd, insn, hit_data); - return bfd_reloc_ok; + goto error_ret_free_local; } - else if (rtn_reg == 31) - { - /* The return register is r31, so this is a millicode - call. Do not perform any instruction reordering. */ - insn = BLE_XXX_0_0; - r_type = R_HPPA_ABS_CALL_17; - r_pcrel = 0; - insn = hppa_elf_relocate_insn (abfd, input_section, insn, - addr, sym_value, - r_addend, r_format, - r_field, r_pcrel); - bfd_put_32 (abfd, insn, hit_data); - return bfd_reloc_ok; - } - else + + /* Likewise for the internal relocations. */ + amt = section->reloc_count; + amt *= sizeof (Elf_Internal_Rela); + internal_relocs = (Elf_Internal_Rela *) bfd_malloc (amt); + if (internal_relocs == NULL) { - /* Check to see if the delay slot instruction has a - relocation. If so, we need to change the address - field of it because the instruction it relocates - is going to be moved. Oh what a mess. */ - arelent * next_reloc_entry = reloc_entry+1; - - if (next_reloc_entry->address == reloc_entry->address + 4) - next_reloc_entry->address -= 4; - - insn = old_delay_slot_insn; - bfd_put_32 (abfd, insn, hit_data); - insn = BLE_N_XXX_0_0; - bfd_put_32 (abfd, insn, hit_data + 4); - r_type = R_HPPA_ABS_CALL_17; - r_pcrel = 0; - insn = hppa_elf_relocate_insn (abfd, input_section, insn, - addr + 4, - sym_value, r_addend, - r_format, r_field, r_pcrel); - bfd_put_32 (abfd, insn, hit_data + 4); - return bfd_reloc_ok; + free (external_relocs); + goto error_ret_free_local; } - } - /* Same comments as above regarding incorrect test. */ - else if (rtn_reg == 31) - { - /* The return register is r31, so this is a millicode call. - Perform no instruction reordering in this case. */ - insn = BLE_XXX_0_0; - r_type = R_HPPA_ABS_CALL_17; - r_pcrel = 0; - insn = hppa_elf_relocate_insn (abfd, input_section, insn, - addr, sym_value, - r_addend, r_format, - r_field, r_pcrel); - bfd_put_32 (abfd, insn, hit_data); - return bfd_reloc_ok; - } - else - { - /* Check to see if the delay slot instruction has a - relocation. If so, we need to change its address - field because the instruction it relocates is going - to be moved. */ - arelent * next_reloc_entry = reloc_entry+1; - - if (next_reloc_entry->address == reloc_entry->address + 4) - next_reloc_entry->address -= 4; - - insn = old_delay_slot_insn; - bfd_put_32 (abfd, insn, hit_data); - insn = BLE_N_XXX_0_0; - bfd_put_32 (abfd, insn, hit_data + 4); - r_type = R_HPPA_ABS_CALL_17; - r_pcrel = 0; - insn = hppa_elf_relocate_insn (abfd, input_section, insn, - addr + 4, sym_value, - r_addend, r_format, - r_field, r_pcrel); - bfd_put_32 (abfd, insn, hit_data + 4); - return bfd_reloc_ok; - } - } - break; - - /* Something we don't know how to handle. */ - default: - *error_message = (char *) "Unrecognized reloc"; - return bfd_reloc_notsupported; - } - /* Update the instruction word. */ - bfd_put_32 (abfd, insn, hit_data); - return (bfd_reloc_ok); -} + /* Read in the external relocs. */ + input_rel_hdr = &elf_section_data (section)->rel_hdr; + if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 + || bfd_bread (external_relocs, + input_rel_hdr->sh_size, + input_bfd) != input_rel_hdr->sh_size) + { + free (external_relocs); + error_ret_free_internal: + free (internal_relocs); + goto error_ret_free_local; + } -/* Return the address of the howto table entry to perform the CODE - relocation for an ARCH machine. */ + /* 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); -static CONST reloc_howto_type * -elf_hppa_reloc_type_lookup (arch, code) - bfd_arch_info_type *arch; - bfd_reloc_code_real_type code; -{ - if ((int) code < (int) R_HPPA_UNIMPLEMENTED) - { - BFD_ASSERT ((int) elf_hppa_howto_table[(int) code].type == (int) code); - return &elf_hppa_howto_table[(int) code]; - } - return NULL; -} + /* 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; + } -/* Update the symbol extention chain to include the symbol pointed to - by SYMBOLP if SYMBOLP is a function symbol. Used internally and by GAS. */ + /* We're done with the internal relocs, free them. */ + free (internal_relocs); + } + } -void -elf_hppa_tc_symbol (abfd, symbolP, sym_idx, symext_root, symext_last) - bfd *abfd; - elf_symbol_type *symbolP; - int sym_idx; - symext_chainS **symext_root; - symext_chainS **symext_last; -{ - symext_chainS *symextP; - unsigned int arg_reloc; + if (!stub_changed) + break; - /* Only functions can have argument relocations. */ - if (!(symbolP->symbol.flags & BSF_FUNCTION)) - return; + /* 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; - arg_reloc = symbolP->tc_data.hppa_arg_reloc; + for (i = top_id; i >= 0; --i) + { + /* This will probably hit the same section many times.. */ + stub_sec = hplink->stub_group[i].reloc_sec; + if (stub_sec != NULL) + { + stub_sec->_raw_size = 0; + stub_sec->_cooked_size = 0; + } + } + } +#endif - /* If there are no argument relocation bits, then no relocation is - necessary. Do not add this to the symextn section. */ - if (arg_reloc == 0) - return; + bfd_hash_traverse (&hplink->stub_hash_table, + hppa_size_one_stub, + hplink); - /* Allocate memory and initialize this entry. */ - symextP = (symext_chainS *) bfd_alloc (abfd, sizeof (symext_chainS) * 2); - if (!symextP) - { - bfd_set_error (bfd_error_no_memory); - abort(); /* FIXME */ + /* Ask the linker to do its stuff. */ + (*hplink->layout_sections_again) (); + stub_changed = 0; } - symextP[0].entry = ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX, sym_idx); - symextP[0].next = &symextP[1]; + ret = 1; - symextP[1].entry = ELF32_HPPA_SX_WORD (HPPA_SXT_ARG_RELOC, arg_reloc); - symextP[1].next = NULL; + error_ret_free_local: + while (bfd_count-- > 0) + if (all_local_syms[bfd_count]) + free (all_local_syms[bfd_count]); + free (all_local_syms); - /* Now update the chain itself so it can be walked later to build - the symbol extension section. */ - if (*symext_root == NULL) - { - *symext_root = &symextP[0]; - *symext_last = &symextP[1]; - } - else - { - (*symext_last)->next = &symextP[0]; - *symext_last = &symextP[1]; - } + return ret; } -/* Build the symbol extension section. Used internally and by GAS. */ +/* For a final link, this function is called after we have sized the + stubs to provide a value for __gp. */ -void -elf_hppa_tc_make_sections (abfd, symext_root) +boolean +elf32_hppa_set_gp (abfd, info) bfd *abfd; - symext_chainS *symext_root; + struct bfd_link_info *info; { - symext_chainS *symextP; - int size, n, i; - asection *symextn_sec; - - /* FIXME: Huh? I don't see what this is supposed to do for us. */ - hppa_elf_stub_finish (abfd); - - /* If there are no entries in the symbol extension chain, then - there is no symbol extension section. */ - if (symext_root == NULL) - return; - - /* Count the number of entries on the chain. */ - for (n = 0, symextP = symext_root; symextP; symextP = symextP->next, ++n) - ; - - /* Create the symbol extension section and set some appropriate - attributes. */ - size = sizeof (symext_entryS) * n; - symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME); - if (symextn_sec == (asection *) 0) + struct elf32_hppa_link_hash_table *hplink; + struct elf_link_hash_entry *h; + asection *sec; + bfd_vma gp_val; + + hplink = hppa_link_hash_table (info); + h = elf_link_hash_lookup (&hplink->root, "$global$", + false, false, false); + + if (h != NULL + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak)) { - symextn_sec = bfd_make_section (abfd, SYMEXTN_SECTION_NAME); - bfd_set_section_flags (abfd, - symextn_sec, - SEC_LOAD | SEC_HAS_CONTENTS | SEC_DATA); - symextn_sec->output_section = symextn_sec; - symextn_sec->output_offset = 0; - bfd_set_section_alignment (abfd, symextn_sec, 2); + gp_val = h->root.u.def.value; + sec = h->root.u.def.section; } - bfd_set_section_size (abfd, symextn_sec, symextn_contents_real_size); - symextn_contents_real_size = size; - - /* Grab some memory for the contents of the symbol extension section - itself. */ - symextn_contents = (symext_entryS *) bfd_alloc (abfd, size); - if (!symextn_contents) + else { - bfd_set_error (bfd_error_no_memory); - abort(); /* FIXME */ + /* 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 (h != NULL) + { + h->root.type = bfd_link_hash_defined; + h->root.u.def.value = gp_val; + if (sec != NULL) + h->root.u.def.section = sec; + else + h->root.u.def.section = bfd_abs_section_ptr; + } } - /* Fill in the contents of the symbol extension section. */ - for (i = 0, symextP = symext_root; symextP; symextP = symextP->next, ++i) - symextn_contents[i] = symextP->entry; + if (sec != NULL && sec->output_section != NULL) + gp_val += sec->output_section->vma + sec->output_offset; - return; + elf_gp (abfd) = gp_val; + return true; } -/* Return the symbol extension record of type TYPE for the symbol SYM. */ +/* Build all the stubs associated with the current output file. The + stubs are kept in a hash table attached to the main linker hash + table. We also set up the .plt entries for statically linked PIC + functions here. This function is called via hppaelf_finish in the + linker. */ -static symext_entryS -elf32_hppa_get_sym_extn (abfd, sym, type) - bfd *abfd; - asymbol *sym; - int type; +boolean +elf32_hppa_build_stubs (info) + struct bfd_link_info *info; { - switch (type) - { - case HPPA_SXT_SYMNDX: - case HPPA_SXT_NULL: - return (symext_entryS) 0; - case HPPA_SXT_ARG_RELOC: - { - elf_symbol_type *esymP = (elf_symbol_type *) sym; + asection *stub_sec; + struct bfd_hash_table *table; + struct elf32_hppa_link_hash_table *hplink; - return (symext_entryS) esymP->tc_data.hppa_arg_reloc; - } - /* This should never happen. */ - default: - abort(); + hplink = hppa_link_hash_table (info); + + for (stub_sec = hplink->stub_bfd->sections; + stub_sec != NULL; + stub_sec = stub_sec->next) + { + bfd_size_type size; + + /* Allocate memory to hold the linker stubs. */ + size = stub_sec->_raw_size; + stub_sec->contents = (unsigned char *) bfd_zalloc (hplink->stub_bfd, + size); + if (stub_sec->contents == NULL && size != 0) + return false; + stub_sec->_raw_size = 0; } -} -/* Search the chain of stub descriptions and locate the stub - description for this the given section within the given bfd. + /* Build the stubs as directed by the stub hash table. */ + table = &hplink->stub_hash_table; + bfd_hash_traverse (table, hppa_build_one_stub, info); - FIXME: I see yet another wonderful linear linked list search - here. This is probably bad. */ + return true; +} -static elf32_hppa_stub_description * -find_stubs (abfd, stub_sec) +/* Perform a final link. */ + +static boolean +elf32_hppa_final_link (abfd, info) bfd *abfd; - asection *stub_sec; + struct bfd_link_info *info; { - elf32_hppa_stub_description *stubP; - - for (stubP = elf_hppa_stub_rootP; stubP; stubP = stubP->next) + asection *s; + + /* Invoke the regular ELF linker to do all the work. */ + if (!bfd_elf32_bfd_final_link (abfd, info)) + return false; + + /* If we're producing a final executable, sort the contents of the + unwind section. Magic section names, but this is much safer than + having elf32_hppa_relocate_section remember where SEGREL32 relocs + occurred. Consider what happens if someone inept creates a + linker script that puts unwind information in .text. */ + s = bfd_get_section_by_name (abfd, ".PARISC.unwind"); + if (s != NULL) { - /* Is this the right one? */ - if (stubP->this_bfd == abfd && stubP->stub_sec == stub_sec) - return stubP; - } - return NULL; -} + bfd_size_type size; + char *contents; -static elf32_hppa_stub_description * -new_stub (abfd, stub_sec, link_info) - bfd *abfd; - asection *stub_sec; - struct bfd_link_info *link_info; -{ - elf32_hppa_stub_description *stub = find_stubs (abfd, stub_sec); + size = s->_raw_size; + contents = bfd_malloc (size); + if (contents == NULL) + return false; - /* If we found a list for this bfd, then use it. */ - if (stub) - return stub; + if (! bfd_get_section_contents (abfd, s, contents, (file_ptr) 0, size)) + return false; - /* Nope, allocate and initialize a new entry in the stub list chain. */ - stub = (elf32_hppa_stub_description *) - bfd_zalloc (abfd, sizeof (elf32_hppa_stub_description)); - if (stub) - { - stub->this_bfd = abfd; - stub->stub_sec = stub_sec; - stub->real_size = 0; - stub->allocated_size = 0; - stub->stub_contents = NULL; - stub->stub_secp = NULL; - stub->link_info = link_info; + qsort (contents, (size_t) (size / 16), 16, hppa_unwind_entry_compare); - stub->next = elf_hppa_stub_rootP; - elf_hppa_stub_rootP = stub; - } - else - { - bfd_set_error (bfd_error_no_memory); - abort(); /* FIXME */ + if (! bfd_set_section_contents (abfd, s, contents, (file_ptr) 0, size)) + return false; } - - return stub; + return true; } -/* Try and locate a stub with the name NAME within the stubs - associated with ABFD. More linked list searches. */ +/* Record the lowest address for the data and text segments. */ -static elf32_hppa_stub_name_list * -find_stub_by_name (abfd, stub_sec, name) - bfd *abfd; - asection *stub_sec; - char *name; +static void +hppa_record_segment_addr (abfd, section, data) + bfd *abfd ATTRIBUTE_UNUSED; + asection *section; + PTR data; { - /* Find the stubs associated with this bfd. */ - elf32_hppa_stub_description *stub = find_stubs (abfd, stub_sec); + struct elf32_hppa_link_hash_table *hplink; + + hplink = (struct elf32_hppa_link_hash_table *) data; - /* If found, then we have to walk down them looking for a match. */ - if (stub) + if ((section->flags & (SEC_ALLOC | SEC_LOAD)) == (SEC_ALLOC | SEC_LOAD)) { - elf32_hppa_stub_name_list *name_listP; + bfd_vma value = section->vma - section->filepos; - for (name_listP = stub->stub_listP; - name_listP; - name_listP = name_listP->next) + if ((section->flags & SEC_READONLY) != 0) { - if (!strcmp (name_listP->sym->name, name)) - return name_listP; - } - } - - /* Not found. */ - return 0; -} - -/* Add a new stub (SYM) to the list of stubs associated with the given BFD. */ -static elf32_hppa_stub_name_list * -add_stub_by_name(abfd, stub_sec, sym, link_info) - bfd *abfd; - asection *stub_sec; - asymbol *sym; - struct bfd_link_info *link_info; -{ - elf32_hppa_stub_description *stub = find_stubs (abfd, stub_sec); - elf32_hppa_stub_name_list *stub_entry; - - /* If no stubs are associated with this bfd, then we have to make - a chain-of-stubs associated with this bfd. */ - if (!stub) - stub = new_stub (abfd, stub_sec, link_info); - - if (stub) - { - /* Allocate and initialize an entry in the stub chain. */ - stub_entry = (elf32_hppa_stub_name_list *) - bfd_zalloc (abfd, sizeof (elf32_hppa_stub_name_list)); - - if (stub_entry) - { - stub_entry->size = 0; - stub_entry->sym = sym; - stub_entry->stub_desc = stub; - /* First byte of this stub is the pointer to - the next available location in the stub buffer. */ - stub_entry->stub_secp = stub->stub_secp; - /* Add it to the chain. */ - if (stub->stub_listP) - stub_entry->next = stub->stub_listP; - else - stub_entry->next = NULL; - stub->stub_listP = stub_entry; - return stub_entry; + if (value < hplink->text_segment_base) + hplink->text_segment_base = value; } else { - bfd_set_error (bfd_error_no_memory); - abort(); /* FIXME */ + if (value < hplink->data_segment_base) + hplink->data_segment_base = value; } } - /* Death by mis-adventure. */ - abort (); - return (elf32_hppa_stub_name_list *)NULL; -} - -/* For the given caller/callee argument location information and the - type of relocation (arguments or return value), return the type - of argument relocation needed to make caller and callee happy. */ - -static arg_reloc_type -type_of_mismatch (caller_bits, callee_bits, type) - int caller_bits; - int callee_bits; - int type; -{ - switch (type) - { - case ARGUMENTS: - return mismatches[caller_bits][callee_bits]; - case RETURN_VALUE: - return retval_mismatches[caller_bits][callee_bits]; - } - return ARG_RELOC_ERR; -} - -/* Extract specific argument location bits for WHICH from the - the full argument location information in AR. */ -#define EXTRACT_ARBITS(ar, which) ((ar) >> (8 - ((which) * 2))) & 3 - -/* Add the new instruction INSN into the stub area denoted by ENTRY. - FIXME: Looks like more cases where we assume sizeof (int) == - sizeof (insn) which may not be true if building cross tools. */ -#define NEW_INSTRUCTION(entry, insn) \ -{ \ - *((entry)->stub_desc->stub_secp)++ = (insn); \ - (entry)->stub_desc->real_size += sizeof (int); \ - (entry)->size += sizeof(int); \ - bfd_set_section_size((entry)->stub_desc->this_bfd, \ - (entry)->stub_desc->stub_sec, \ - (entry)->stub_desc->real_size); \ } -/* Find the offset of the current stub? Looks more like it - finds the offset of the last instruction to me. */ -#define CURRENT_STUB_OFFSET(entry) \ - ((char *)(entry)->stub_desc->stub_secp \ - - (char *)(entry)->stub_desc->stub_contents - 4) - -/* All the stubs have already been built, finish up stub stuff - by applying relocations to the stubs. */ +/* Perform a relocation as part of a final link. */ -static void -hppa_elf_stub_finish (output_bfd) - bfd *output_bfd; +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; { - elf32_hppa_stub_description *stub_list = elf_hppa_stub_rootP; + int insn; + unsigned int r_type = ELF32_R_TYPE (rel->r_info); + reloc_howto_type *howto = elf_hppa_howto_table + r_type; + int r_format = howto->bitsize; + enum hppa_reloc_field_selector_type_alt r_field; + bfd *input_bfd = input_section->owner; + bfd_vma offset = rel->r_offset; + bfd_vma max_branch_offset = 0; + bfd_byte *hit_data = contents + offset; + bfd_signed_vma addend = rel->r_addend; + bfd_vma location; + struct elf32_hppa_stub_hash_entry *stub_entry = NULL; + int val; + + if (r_type == R_PARISC_NONE) + return bfd_reloc_ok; + + insn = bfd_get_32 (input_bfd, hit_data); + + /* Find out where we are and where we're going. */ + location = (offset + + input_section->output_offset + + input_section->output_section->vma); - /* If the stubs have been finished, then we're already done. */ - if (stubs_finished) - return; - - /* Walk down the list of stub lists. */ - for (; stub_list; stub_list = stub_list->next) + switch (r_type) { - /* If this list has stubs, then do something. */ - if (stub_list->real_size) + case R_PARISC_PCREL12F: + case R_PARISC_PCREL17F: + case R_PARISC_PCREL22F: + /* If this is a call to a function defined in another dynamic + library, or if it is a call to a PIC function in the same + object, or if this is a shared link and it is a call to a + weak symbol which may or may not be in the same object, then + find the import stub in the stub hash. */ + if (sym_sec == NULL + || sym_sec->output_section == NULL + || (h != NULL + && ((h->maybe_pic_call + && !(input_section->flags & SEC_HAS_GOT_REF)) + || (h->elf.root.type == bfd_link_hash_defweak + && h->elf.dynindx != -1 + && h->elf.plt.offset != (bfd_vma) -1)))) { - bfd *stub_bfd = stub_list->this_bfd; - asection *stub_sec = bfd_get_section_by_name (stub_bfd, - ".hppa_linker_stubs"); - bfd_size_type reloc_size; - arelent **reloc_vector; - - /* Some sanity checking. */ - BFD_ASSERT (stub_sec == stub_list->stub_sec); - BFD_ASSERT (stub_sec); - - /* For stub sections raw_size == cooked_size. Also update - reloc_done as we're handling the relocs now. */ - stub_sec->_cooked_size = stub_sec->_raw_size; - stub_sec->reloc_done = true; - - /* Make space to hold the relocations for the stub section. */ - reloc_size = bfd_get_reloc_upper_bound (stub_bfd, stub_sec); - reloc_vector = (arelent **) alloca (reloc_size); - - /* If we have relocations, do them. */ - if (bfd_canonicalize_reloc (stub_bfd, stub_sec, reloc_vector, - output_bfd->outsymbols)) + stub_entry = hppa_get_stub_entry (input_section, sym_sec, + h, rel, hplink); + if (stub_entry != NULL) { - arelent **parent; - for (parent = reloc_vector; *parent != NULL; parent++) - { - char *err = NULL; - bfd_reloc_status_type r = - bfd_perform_relocation (stub_bfd, *parent, - stub_list->stub_contents, - stub_sec, (bfd *) NULL, &err); - - /* If there was an error, tell someone about it. */ - if (r != bfd_reloc_ok) - { - struct bfd_link_info *link_info = stub_list->link_info; + value = (stub_entry->stub_offset + + stub_entry->stub_sec->output_offset + + stub_entry->stub_sec->output_section->vma); + addend = 0; + } + else if (sym_sec == NULL && h != NULL + && h->elf.root.type == bfd_link_hash_undefweak) + { + /* It's OK if undefined weak. Calls to undefined weak + symbols behave as if the "called" function + immediately returns. We can thus call to a weak + function without first checking whether the function + is defined. */ + value = location; + addend = 8; + } + else + return bfd_reloc_notsupported; + } + /* Fall thru. */ + + case R_PARISC_PCREL21L: + case R_PARISC_PCREL17C: + case R_PARISC_PCREL17R: + case R_PARISC_PCREL14R: + case R_PARISC_PCREL14F: + /* Make it a pc relative offset. */ + value -= location; + addend -= 8; + break; - switch (r) - { - case bfd_reloc_undefined: - if (! ((*link_info->callbacks->undefined_symbol) - (link_info, - bfd_asymbol_name (*(*parent)->sym_ptr_ptr), - stub_bfd, stub_sec, (*parent)->address))) - abort (); - break; - case bfd_reloc_dangerous: - if (! ((*link_info->callbacks->reloc_dangerous) - (link_info, err, stub_bfd, stub_sec, - (*parent)->address))) - abort (); - break; - case bfd_reloc_overflow: - { - if (! ((*link_info->callbacks->reloc_overflow) - (link_info, - bfd_asymbol_name (*(*parent)->sym_ptr_ptr), - (*parent)->howto->name, - (*parent)->addend, - stub_bfd, stub_sec, - (*parent)->address))) - abort (); - } - break; - case bfd_reloc_outofrange: - default: - abort (); - break; - } - } - } + 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_archive_filename (input_bfd), + input_section->name, + (long) rel->r_offset, + howto->name); +#endif } + /* Now try to make things easy for the dynamic linker. */ - /* All done with the relocations. Set the final contents - of the stub section. FIXME: no check of return value! */ - bfd_set_section_contents (output_bfd, stub_sec, - stub_list->stub_contents, - 0, stub_list->real_size); + break; } - } - /* All done. */ - stubs_finished = true; -} + /* Fall thru. */ -/* Allocate a new relocation entry to be used in a linker stub. */ + case R_PARISC_DLTIND21L: + case R_PARISC_DLTIND14R: + case R_PARISC_DLTIND14F: + value -= elf_gp (input_section->output_section->owner); + break; -static void -hppa_elf_stub_reloc (stub_desc, output_bfd, target_sym, offset, type) - elf32_hppa_stub_description *stub_desc; - bfd *output_bfd; - asymbol **target_sym; - int offset; - elf32_hppa_reloc_type type; -{ - arelent relent; - int size; - Elf_Internal_Shdr *rela_hdr; + case R_PARISC_SEGREL32: + if ((sym_sec->flags & SEC_CODE) != 0) + value -= hplink->text_segment_base; + else + value -= hplink->data_segment_base; + break; + + default: + break; + } - /* I really don't like the realloc nonsense in here. FIXME. */ - if (stub_desc->relocs_allocated_cnt == stub_desc->stub_sec->reloc_count) + switch (r_type) { - /* Allocate the first few relocation entries. */ - if (stub_desc->stub_sec->relocation == NULL) + 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) { - stub_desc->relocs_allocated_cnt = STUB_RELOC_INCR; - size = sizeof (arelent) * stub_desc->relocs_allocated_cnt; - stub_desc->stub_sec->relocation = (arelent *) bfd_zmalloc (size); + max_branch_offset = (1 << (17-1)) << 2; } - else + else if (r_type == (unsigned int) R_PARISC_PCREL12F) { - /* We've used all the entries we've already allocated. So get - some more. */ - stub_desc->relocs_allocated_cnt += STUB_RELOC_INCR; - size = sizeof (arelent) * stub_desc->relocs_allocated_cnt; - stub_desc->stub_sec->relocation = (arelent *) - realloc (stub_desc->stub_sec->relocation, size); + max_branch_offset = (1 << (12-1)) << 2; } - if (!stub_desc->stub_sec->relocation) + else { - bfd_set_error (bfd_error_no_memory); - abort (); /* FIXME */ + max_branch_offset = (1 << (22-1)) << 2; } - } - - rela_hdr = &elf_section_data(stub_desc->stub_sec)->rel_hdr; - rela_hdr->sh_size += sizeof(Elf32_External_Rela); - - /* Fill in the details. */ - relent.address = offset; - relent.addend = 0; - relent.sym_ptr_ptr = target_sym; - relent.howto = bfd_reloc_type_lookup (stub_desc->this_bfd, type); - - /* Save it in the array of relocations for the stub section. */ - memcpy (&stub_desc->stub_sec->relocation[stub_desc->stub_sec->reloc_count++], - &relent, sizeof (arelent)); -} - -/* Build an argument relocation stub. RTN_ADJUST is a hint that an - adjust to the return pointer from within the stub itself may be - needed. */ - -static asymbol * -hppa_elf_build_linker_stub (abfd, output_bfd, link_info, reloc_entry, - stub_types, rtn_adjust, data, linker_stub_type) - bfd *abfd; - bfd *output_bfd; - struct bfd_link_info *link_info; - arelent *reloc_entry; - arg_reloc_type stub_types[5]; - int rtn_adjust; - unsigned *data; - hppa_stub_type linker_stub_type; -{ - int i; - boolean milli, dyncall; - char stub_sym_name[128]; - elf32_hppa_stub_name_list *stub_entry; - /* Some initialization. */ - unsigned insn = data[0]; - asymbol *stub_sym = NULL; - asymbol *target_sym = reloc_entry->sym_ptr_ptr[0]; - asection *stub_sec = bfd_get_section_by_name (abfd, ".hppa_linker_stubs"); - elf32_hppa_stub_description *stub_desc = find_stubs (abfd, stub_sec); - - /* Perform some additional checks on whether we should really do the - return adjustment. For example, if the instruction is nullified - or if the delay slot contains an instruction that modifies the return - pointer, then the branch instructions should not be rearranged - (rtn_adjust is false). */ - if (insn & 2 || insn == 0) - rtn_adjust = false; - else - { - unsigned delay_insn = data[1]; - if (get_opcode (delay_insn) == LDO - && (((insn & 0x03e00000) >> 21) == ((delay_insn & 0x001f0000) >> 16))) - rtn_adjust = false; - } + /* 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; - /* Some special code for long-call stubs. */ - if (linker_stub_type == HPPA_STUB_LONG_CALL) - { - - /* Is this a millicode call? If so, the return address - comes in on r31 rather than r2 (rp) so a slightly - different code sequence is needed. */ - unsigned rtn_reg = (insn & 0x03e00000) >> 21; - if (rtn_reg == 31) - milli = true; - - /* Dyncall is special because the user code has already - put the return pointer in %r2 (aka RP). Other millicode - calls have the return pointer in %r31. */ - if (strcmp (target_sym->name, "$$dyncall") == 0) - dyncall = true; - - /* If we are creating a call from a stub to another stub, then - never do the instruction reordering. We can tell if we are - going to be calling one stub from another by the fact that - the symbol name has '_stub_' (arg. reloc. stub) or '_lb_stub_' - prepended to the name. Alternatively, the section of the - symbol will be '.hppa_linker_stubs'. This is only an issue - for long-calls; they are the only stubs allowed to call another - stub. */ - if ((strncmp (target_sym->name, "_stub_", 6) == 0) - || (strncmp (target_sym->name, "_lb_stub_", 9) == 0)) + /* 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) { - BFD_ASSERT (strcmp (target_sym->section->name, ".hppa_linker_stubs") - == 0); - rtn_adjust = false; + stub_entry = hppa_get_stub_entry (input_section, sym_sec, + h, rel, hplink); + if (stub_entry == NULL) + 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; } - /* Create the stub section if necessary. */ - if (!stub_sec) + /* Make sure we can reach the stub. */ + if (max_branch_offset != 0 + && value + addend + max_branch_offset >= 2*max_branch_offset) { - BFD_ASSERT (stub_desc == NULL); - hppa_elf_create_stub_sec (abfd, output_bfd, &stub_sec, link_info); - stub_desc = new_stub (abfd, stub_sec, link_info); + (*_bfd_error_handler) + (_("%s(%s+0x%lx): cannot reach %s, recompile with -ffunction-sections"), + bfd_archive_filename (input_bfd), + input_section->name, + (long) rel->r_offset, + stub_entry->root.string); + return bfd_reloc_notsupported; } - /* Make the stub if we did not find one already. */ - if (!stub_desc) - stub_desc = new_stub (abfd, stub_sec, link_info); + val = hppa_field_adjust (value, addend, r_field); - /* Allocate space to write the stub. - FIXME: Why using realloc?!? */ - if (!stub_desc->stub_contents) - { - stub_desc->allocated_size = STUB_BUFFER_INCR; - stub_desc->stub_contents = (char *) malloc (STUB_BUFFER_INCR); - } - else if ((stub_desc->allocated_size - stub_desc->real_size) < STUB_MAX_SIZE) + switch (r_type) { - stub_desc->allocated_size = stub_desc->allocated_size + STUB_BUFFER_INCR; - stub_desc->stub_contents = (char *) realloc (stub_desc->stub_contents, - stub_desc->allocated_size); - } + case R_PARISC_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; - /* If no memory die. (I seriously doubt the other routines - are prepared to get a NULL return value). */ - if (!stub_desc->stub_contents) - { - bfd_set_error (bfd_error_no_memory); - abort (); + default: + break; } - /* Generate an appropriate name for this stub. */ - if (linker_stub_type == HPPA_STUB_ARG_RELOC) - sprintf (stub_sym_name, - "_stub_%s_%02d_%02d_%02d_%02d_%02d_%s", - reloc_entry->sym_ptr_ptr[0]->name, - stub_types[0], stub_types[1], stub_types[2], - stub_types[3], stub_types[4], - rtn_adjust ? "RA" : ""); - else - sprintf (stub_sym_name, - "_lb_stub_%s_%s", reloc_entry->sym_ptr_ptr[0]->name, - rtn_adjust ? "RA" : ""); + 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; +} - stub_desc->stub_secp - = (int *) (stub_desc->stub_contents + stub_desc->real_size); - stub_entry = find_stub_by_name (abfd, stub_sec, stub_sym_name); +/* Relocate an HPPA ELF section. */ - /* See if we already have one by this name. */ - if (stub_entry) +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++) { - /* Yes, re-use it. Redirect the original relocation from the - old symbol (a function symbol) to the stub (the stub will call - the original function). */ - stub_sym = stub_entry->sym; - reloc_entry->sym_ptr_ptr = bfd_zalloc (abfd, sizeof (asymbol **)); - if (reloc_entry->sym_ptr_ptr == NULL) + unsigned int r_type; + reloc_howto_type *howto; + unsigned int r_symndx; + struct elf32_hppa_link_hash_entry *h; + Elf_Internal_Sym *sym; + asection *sym_sec; + bfd_vma relocation; + bfd_reloc_status_type r; + const char *sym_name; + boolean plabel; + bfd_vma off; + + r_type = ELF32_R_TYPE (rel->r_info); + if (r_type >= (unsigned int) R_PARISC_UNIMPLEMENTED) { - bfd_set_error (bfd_error_no_memory); - abort (); + bfd_set_error (bfd_error_bad_value); + return false; } - reloc_entry->sym_ptr_ptr[0] = stub_sym; - if (linker_stub_type == HPPA_STUB_LONG_CALL - || (reloc_entry->howto->type != R_HPPA_PLABEL_32 - && (get_opcode(insn) == BLE - || get_opcode (insn) == BE - || get_opcode (insn) == BL))) - reloc_entry->howto = bfd_reloc_type_lookup (abfd, R_HPPA_STUB_CALL_17); - } - else - { - /* Create a new symbol to point to this stub. */ - stub_sym = bfd_make_empty_symbol (abfd); - if (!stub_sym) + 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) { - bfd_set_error (bfd_error_no_memory); - abort (); + /* 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); } - stub_sym->name = bfd_zalloc (abfd, strlen (stub_sym_name) + 1); - if (!stub_sym->name) + else { - bfd_set_error (bfd_error_no_memory); - abort (); + 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 + && h->elf.type != STT_PARISC_MILLI) + { + if (info->symbolic && !info->allow_shlib_undefined) + 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; + } } - strcpy ((char *) stub_sym->name, stub_sym_name); - stub_sym->value - = (char *) stub_desc->stub_secp - (char *) stub_desc->stub_contents; - stub_sym->section = stub_sec; - stub_sym->flags = BSF_LOCAL | BSF_FUNCTION; - stub_entry = add_stub_by_name (abfd, stub_sec, stub_sym, link_info); - /* Redirect the original relocation from the old symbol (a function) - to the stub (the stub calls the function). */ - reloc_entry->sym_ptr_ptr = bfd_zalloc (abfd, sizeof (asymbol **)); - if (reloc_entry->sym_ptr_ptr == NULL) + /* 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) { - bfd_set_error (bfd_error_no_memory); - abort (); - } - reloc_entry->sym_ptr_ptr[0] = stub_sym; - if (linker_stub_type == HPPA_STUB_LONG_CALL - || (reloc_entry->howto->type != R_HPPA_PLABEL_32 - && (get_opcode (insn) == BLE - || get_opcode (insn) == BE - || get_opcode (insn) == BL))) - reloc_entry->howto = bfd_reloc_type_lookup (abfd, R_HPPA_STUB_CALL_17); + 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) + { + boolean dyn; - /* Now generate the code for the stub. Starting with two - common instructions. + off = h->elf.got.offset; + dyn = hplink->root.dynamic_sections_created; + if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, &h->elf)) + { + /* This is actually a static link, or it is a + -Bsymbolic link and the symbol is defined + locally, or the symbol was forced to be local + because of a version file. We must initialize + this entry in the global offset table. Since the + offset must always be a multiple of 4, we use the + least significant bit to record whether we have + initialized it already. + + When doing a dynamic link, we create a .rela.got + relocation entry to initialize the value. This + is done in the finish_dynamic_symbol routine. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_32 (output_bfd, relocation, + hplink->sgot->contents + off); + h->elf.got.offset |= 1; + } + } + } + else + { + /* Local symbol case. */ + if (local_got_offsets == NULL) + abort (); - FIXME: Do we still need the SP adjustment? - Do we still need to muck with space registers? */ - NEW_INSTRUCTION (stub_entry, LDSID_31_1) - NEW_INSTRUCTION (stub_entry, MTSP_1_SR0) + off = local_got_offsets[r_symndx]; - if (linker_stub_type == HPPA_STUB_ARG_RELOC) - { - NEW_INSTRUCTION (stub_entry, ADDI_8_SP) + /* 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); - /* Examine each argument, generating code to relocate it - into a different register if necessary. */ - for (i = ARG0; i < ARG3; i++) - { - switch (stub_types[i]) - { + if (info->shared) + { + /* Output a dynamic relocation for this GOT + entry. In this case it is relative to the + base of the object because the symbol index + is zero. */ + Elf_Internal_Rela outrel; + asection *srelgot = hplink->srelgot; + + outrel.r_offset = (off + + hplink->sgot->output_offset + + hplink->sgot->output_section->vma); + outrel.r_info = ELF32_R_INFO (0, R_PARISC_DIR32); + outrel.r_addend = relocation; + bfd_elf32_swap_reloca_out (output_bfd, &outrel, + ((Elf32_External_Rela *) + srelgot->contents + + srelgot->reloc_count)); + ++srelgot->reloc_count; + } - case NO_ARG_RELOC: - continue; + local_got_offsets[r_symndx] |= 1; + } + } - case R_TO_FR: - switch (i) - { - case ARG0: - NEW_INSTRUCTION (stub_entry, STWS_ARG0_M8SP) - NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG0) - break; - case ARG1: - NEW_INSTRUCTION (stub_entry, STWS_ARG1_M8SP) - NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG1) - break; - case ARG2: - NEW_INSTRUCTION (stub_entry, STWS_ARG2_M8SP) - NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG2) - break; - case ARG3: - NEW_INSTRUCTION (stub_entry, STWS_ARG3_M8SP) - NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FARG3) - break; - } - continue; - - case R01_TO_FR: - switch (i) - { - case ARG0: - NEW_INSTRUCTION (stub_entry, STWS_ARG0_M4SP) - NEW_INSTRUCTION (stub_entry, STWS_ARG1_M8SP) - NEW_INSTRUCTION (stub_entry, FLDDS_M8SP_FARG1) - break; - default: - abort (); - break; - } - continue; + if (off >= (bfd_vma) -2) + abort (); - case R23_TO_FR: - switch (i) - { - case ARG2: - NEW_INSTRUCTION (stub_entry, STWS_ARG2_M4SP) - NEW_INSTRUCTION (stub_entry, STWS_ARG3_M8SP) - NEW_INSTRUCTION (stub_entry, FLDDS_M8SP_FARG3) - break; - default: - abort (); - break; - } - continue; + /* Add the base of the GOT to the relocation value. */ + relocation = (off + + hplink->sgot->output_offset + + hplink->sgot->output_section->vma); + break; - case FR_TO_R: - switch (i) - { - case ARG0: - NEW_INSTRUCTION (stub_entry, FSTWS_FARG0_M8SP) - NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG0) - break; - case ARG1: - NEW_INSTRUCTION (stub_entry, FSTWS_FARG1_M8SP) - NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG1) - break; - case ARG2: - NEW_INSTRUCTION (stub_entry, FSTWS_FARG2_M8SP) - NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG2) - break; - case ARG3: - NEW_INSTRUCTION (stub_entry, FSTWS_FARG3_M8SP) - NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG3) - break; - } - continue; - - case FR_TO_R01: - switch (i) - { - case ARG0: - NEW_INSTRUCTION (stub_entry, FSTDS_FARG1_M8SP) - NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG0) - NEW_INSTRUCTION (stub_entry, LDWS_M8SP_ARG1) - break; - default: - abort (); - break; - } - continue; - - case FR_TO_R23: - switch (i) - { - case ARG2: - NEW_INSTRUCTION (stub_entry, FSTDS_FARG3_M8SP) - NEW_INSTRUCTION (stub_entry, LDWS_M4SP_ARG2) - NEW_INSTRUCTION (stub_entry, LDWS_M8SP_ARG3) - break; - default: - abort (); - break; - } - continue; + case R_PARISC_SEGREL32: + /* If this is the first SEGREL relocation, then initialize + the segment base values. */ + if (hplink->text_segment_base == (bfd_vma) -1) + bfd_map_over_sections (output_bfd, + hppa_record_segment_addr, + hplink); + break; + + case R_PARISC_PLABEL14R: + case R_PARISC_PLABEL21L: + case R_PARISC_PLABEL32: + if (hplink->root.dynamic_sections_created) + { + /* If we have a global symbol with a PLT slot, then + redirect this relocation to it. */ + if (h != NULL) + { + off = h->elf.plt.offset; + if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info, &h->elf)) + { + /* In a non-shared link, adjust_dynamic_symbols + isn't called for symbols forced local. We + need to write out the plt entry here. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_32 (output_bfd, + relocation, + hplink->splt->contents + off); + bfd_put_32 (output_bfd, + elf_gp (hplink->splt->output_section->owner), + hplink->splt->contents + off + 4); + h->elf.plt.offset |= 1; + } + } + } + else + { + bfd_vma *local_plt_offsets; - default: + if (local_got_offsets == NULL) abort (); - break; - } - } - /* Put the stack pointer back. FIXME: Is this still necessary? */ - NEW_INSTRUCTION (stub_entry, ADDI_M8_SP_SP) - } + local_plt_offsets = local_got_offsets + symtab_hdr->sh_info; + off = local_plt_offsets[r_symndx]; - /* Common code again. Return pointer adjustment and the like. */ - if (!dyncall) - { - /* This isn't dyncall. */ - if (!milli) - { - /* It's not a millicode call, so get the correct return - value into %r2 (aka RP). */ - if (rtn_adjust) - NEW_INSTRUCTION (stub_entry, ADDI_M4_31_RP) - else - NEW_INSTRUCTION (stub_entry, COPY_31_2) + /* 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_plt_offsets[r_symndx] |= 1; + } + } + + if (off >= (bfd_vma) -2) + abort (); + + /* 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; } - else + /* Fall through and possibly emit a dynamic relocation. */ + + case R_PARISC_DIR17F: + case R_PARISC_DIR17R: + case R_PARISC_DIR14F: + case R_PARISC_DIR14R: + case R_PARISC_DIR21L: + case R_PARISC_DPREL14F: + case R_PARISC_DPREL14R: + case R_PARISC_DPREL21L: + case R_PARISC_DIR32: + /* The reloc types handled here and this conditional + expression must match the code in ..check_relocs and + ..discard_relocs. ie. We need exactly the same condition + as in ..check_relocs, with some extra conditions (dynindx + test in this case) to cater for relocs removed by + ..discard_relocs. If you squint, the non-shared test + here does indeed match the one in ..check_relocs, the + difference being that here we test DEF_DYNAMIC as well as + !DEF_REGULAR. All common syms end up with !DEF_REGULAR, + which is why we can't use just that test here. + Conversely, DEF_DYNAMIC can't be used in check_relocs as + there all files have not been loaded. */ + if ((info->shared + && (input_section->flags & SEC_ALLOC) != 0 + && (IS_ABSOLUTE_RELOC (r_type) + || (h != NULL + && h->elf.dynindx != -1 + && (!info->symbolic + || (h->elf.elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)))) + || (!info->shared + && (input_section->flags & SEC_ALLOC) != 0 + && h != NULL + && h->elf.dynindx != -1 + && (h->elf.elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0 + && (((h->elf.elf_link_hash_flags + & ELF_LINK_HASH_DEF_DYNAMIC) != 0 + && (h->elf.elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0) + || h->elf.root.type == bfd_link_hash_undefweak + || h->elf.root.type == bfd_link_hash_undefined))) { - /* It is a millicode call, so get the correct return - value into %r1?!?. FIXME: Shouldn't this be - %r31? Yes, and a little re-arrangement of the - code below would make that possible. */ - if (rtn_adjust) - NEW_INSTRUCTION (stub_entry, ADDI_M4_31_1) - else - NEW_INSTRUCTION (stub_entry, COPY_31_1) + 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); + if (sreloc == NULL) + abort (); + } + + outrel.r_offset = rel->r_offset; + outrel.r_addend = rel->r_addend; + skip = false; + if (elf_section_data (input_section)->stab_info != NULL) + { + off = (_bfd_stab_section_offset + (output_bfd, &hplink->root.stab_info, + input_section, + &elf_section_data (input_section)->stab_info, + rel->r_offset)); + if (off == (bfd_vma) -1) + skip = true; + outrel.r_offset = off; + } + + outrel.r_offset += (input_section->output_offset + + input_section->output_section->vma); + + if (skip) + { + memset (&outrel, 0, sizeof (outrel)); + } + else if (h != NULL + && h->elf.dynindx != -1 + && (plabel + || !IS_ABSOLUTE_RELOC (r_type) + || !info->shared + || !info->symbolic + || (h->elf.elf_link_hash_flags + & ELF_LINK_HASH_DEF_REGULAR) == 0)) + { + outrel.r_info = ELF32_R_INFO (h->elf.dynindx, r_type); + } + else /* It's a local symbol, or one marked to become local. */ + { + int indx = 0; + + /* Add the absolute offset of the symbol. */ + outrel.r_addend += relocation; + + /* Global plabels need to be processed by the + dynamic linker so that functions have at most one + fptr. For this reason, we need to differentiate + between global and local plabels, which we do by + providing the function symbol for a global plabel + reloc, and no symbol for local plabels. */ + if (! plabel + && sym_sec != NULL + && sym_sec->output_section != NULL + && ! bfd_is_abs_section (sym_sec)) + { + indx = elf_section_data (sym_sec->output_section)->dynindx; + /* We are turning this relocation into one + against a section symbol, so subtract out the + output section's address but not the offset + of the input section in the output section. */ + outrel.r_addend -= sym_sec->output_section->vma; + } + + outrel.r_info = ELF32_R_INFO (indx, r_type); + } +#if 0 + /* EH info can cause unaligned DIR32 relocs. + Tweak the reloc type for the dynamic linker. */ + if (r_type == R_PARISC_DIR32 && (outrel.r_offset & 3) != 0) + outrel.r_info = ELF32_R_INFO (ELF32_R_SYM (outrel.r_info), + R_PARISC_DIR32U); +#endif + bfd_elf32_swap_reloca_out (output_bfd, &outrel, + ((Elf32_External_Rela *) + sreloc->contents + + sreloc->reloc_count)); + ++sreloc->reloc_count; } + break; + + default: + break; } + + 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 { - /* This is dyncall, so the code is a little different as the - return pointer is already in %r2 (aka RP). */ - if (rtn_adjust) - NEW_INSTRUCTION (stub_entry, ADDI_M4_31_RP) - } - - /* Save the return address. */ - if (linker_stub_type == HPPA_STUB_ARG_RELOC) - NEW_INSTRUCTION (stub_entry, STW_RP_M8SP) - - /* Long branch to the target function. */ - NEW_INSTRUCTION (stub_entry, LDIL_XXX_31) - hppa_elf_stub_reloc (stub_entry->stub_desc, - abfd, reloc_entry->sym_ptr_ptr, - CURRENT_STUB_OFFSET (stub_entry), - R_HPPA_L21); - NEW_INSTRUCTION (stub_entry, BLE_XXX_0_31) - hppa_elf_stub_reloc (stub_entry->stub_desc, - abfd, reloc_entry->sym_ptr_ptr, - CURRENT_STUB_OFFSET (stub_entry), - R_HPPA_ABS_CALL_R17); - - if (linker_stub_type == HPPA_STUB_ARG_RELOC) - { - /* In delay slot of long-call, copy %r31 into %r2 so that - the callee can return in the normal fashion. */ - NEW_INSTRUCTION (stub_entry, COPY_31_2) - - /* Restore the return address. */ - NEW_INSTRUCTION (stub_entry, LDW_M8SP_RP) - - /* Generate the code to move the return value around. */ - switch (stub_types[RETVAL]) - { - case NO_ARG_RELOC: - break; - - case R_TO_FR: - NEW_INSTRUCTION (stub_entry, STWS_RET0_M8SP) - NEW_INSTRUCTION (stub_entry, FLDWS_M8SP_FRET0) - break; - - case FR_TO_R: - NEW_INSTRUCTION (stub_entry, FSTWS_FRET0_M8SP) - NEW_INSTRUCTION (stub_entry, LDWS_M4SP_RET0) - break; - - default: - abort (); - break; - } + 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); + } - /* Return back to the main code stream. */ - NEW_INSTRUCTION (stub_entry, BV_N_0_RP) + 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_archive_filename (input_bfd), + input_section->name, + (long) rel->r_offset, + howto->name, + sym_name); + bfd_set_error (bfd_error_bad_value); + return false; } else { - if (!dyncall) - { - /* Get return address into %r31. Both variants may be necessary - (I think) as we could be cascading into another stub. */ - if (!milli) - NEW_INSTRUCTION (stub_entry, COPY_2_31) - else - NEW_INSTRUCTION (stub_entry, COPY_1_31) - } - else - { - /* Get the return address into %r31 too. Might be necessary - (I think) as we could be cascading into another stub. */ - NEW_INSTRUCTION (stub_entry, COPY_2_31) - } - - /* No need for a return to the main stream. */ + if (!((*info->callbacks->reloc_overflow) + (info, sym_name, howto->name, (bfd_vma) 0, + input_bfd, input_section, rel->r_offset))) + return false; } } - return stub_sym; + + return true; } -/* Return nonzero if an argument relocation will be needed to call - the function (symbol in RELOC_ENTRY) assuming the caller has - argument relocation bugs CALLER_AR. */ +/* Comparison function for qsort to sort unwind section during a + final link. */ static int -hppa_elf_arg_reloc_needed_p (abfd, reloc_entry, stub_types, caller_ar) - bfd *abfd; - arelent *reloc_entry; - arg_reloc_type stub_types[5]; - symext_entryS caller_ar; +hppa_unwind_entry_compare (a, b) + const PTR a; + const PTR b; { - /* If the symbol is still undefined, then it's impossible to know - if an argument relocation is needed. */ - if (reloc_entry->sym_ptr_ptr[0] - && reloc_entry->sym_ptr_ptr[0]->section != &bfd_und_section) - { - symext_entryS callee_ar = elf32_hppa_get_sym_extn (abfd, - reloc_entry->sym_ptr_ptr[0], - HPPA_SXT_ARG_RELOC); - - /* Now examine all the argument and return value location - information to determine if a relocation stub will be needed. */ - if (caller_ar && callee_ar) - { - arg_location caller_loc[5]; - arg_location callee_loc[5]; - - /* Extract the location information for the return value - and argument registers separately. */ - callee_loc[RETVAL] = EXTRACT_ARBITS (callee_ar, RETVAL); - caller_loc[RETVAL] = EXTRACT_ARBITS (caller_ar, RETVAL); - callee_loc[ARG0] = EXTRACT_ARBITS (callee_ar, ARG0); - caller_loc[ARG0] = EXTRACT_ARBITS (caller_ar, ARG0); - callee_loc[ARG1] = EXTRACT_ARBITS (callee_ar, ARG1); - caller_loc[ARG1] = EXTRACT_ARBITS (caller_ar, ARG1); - callee_loc[ARG2] = EXTRACT_ARBITS (callee_ar, ARG2); - caller_loc[ARG2] = EXTRACT_ARBITS (caller_ar, ARG2); - callee_loc[ARG3] = EXTRACT_ARBITS (callee_ar, ARG3); - caller_loc[ARG3] = EXTRACT_ARBITS (caller_ar, ARG3); - - /* Check some special combinations. For example, if FU - appears in ARG1 or ARG3, we can move it to ARG0 or ARG2, - respectively. (I guess this braindamage is correct? It'd - take an hour or two of reading PA calling conventions to - really know). */ - - if (caller_loc[ARG0] == AR_FU || caller_loc[ARG1] == AR_FU) - { - caller_loc[ARG0] = AR_DBL01; - caller_loc[ARG1] = AR_NO; - } - if (caller_loc[ARG2] == AR_FU || caller_loc[ARG3] == AR_FU) - { - caller_loc[ARG2] = AR_DBL23; - caller_loc[ARG3] = AR_NO; - } - if (callee_loc[ARG0] == AR_FU || callee_loc[ARG1] == AR_FU) - { - callee_loc[ARG0] = AR_DBL01; - callee_loc[ARG1] = AR_NO; - } - if (callee_loc[ARG2] == AR_FU || callee_loc[ARG3] == AR_FU) - { - callee_loc[ARG2] = AR_DBL23; - callee_loc[ARG3] = AR_NO; - } - - /* Now look up potential mismatches. */ - stub_types[ARG0] = type_of_mismatch (caller_loc[ARG0], - callee_loc[ARG0], - ARGUMENTS); - stub_types[ARG1] = type_of_mismatch (caller_loc[ARG1], - callee_loc[ARG1], - ARGUMENTS); - stub_types[ARG2] = type_of_mismatch (caller_loc[ARG2], - callee_loc[ARG2], - ARGUMENTS); - stub_types[ARG3] = type_of_mismatch (caller_loc[ARG3], - callee_loc[ARG3], - ARGUMENTS); - stub_types[RETVAL] = type_of_mismatch (caller_loc[RETVAL], - callee_loc[RETVAL], - RETURN_VALUE); - - /* If any of the arguments or return value need an argument - relocation, then we will need an argument relocation stub. */ - if (stub_types[ARG0] != NO_ARG_RELOC - || stub_types[ARG1] != NO_ARG_RELOC - || stub_types[ARG2] != NO_ARG_RELOC - || stub_types[ARG3] != NO_ARG_RELOC - || stub_types[RETVAL] != NO_ARG_RELOC) - return 1; - } - } - return 0; + const bfd_byte *ap, *bp; + unsigned long av, bv; + + ap = (const bfd_byte *) a; + av = (unsigned long) ap[0] << 24; + av |= (unsigned long) ap[1] << 16; + av |= (unsigned long) ap[2] << 8; + av |= (unsigned long) ap[3]; + + bp = (const bfd_byte *) b; + bv = (unsigned long) bp[0] << 24; + bv |= (unsigned long) bp[1] << 16; + bv |= (unsigned long) bp[2] << 8; + bv |= (unsigned long) bp[3]; + + return av < bv ? -1 : av > bv ? 1 : 0; } -/* Create the linker stub section. */ +/* Finish up dynamic symbol handling. We set the contents of various + dynamic sections here. */ -static void -hppa_elf_create_stub_sec (abfd, output_bfd, secptr, link_info) - bfd *abfd; +static boolean +elf32_hppa_finish_dynamic_symbol (output_bfd, info, h, sym) bfd *output_bfd; - asection **secptr; - struct bfd_link_info *link_info; + struct bfd_link_info *info; + struct elf_link_hash_entry *h; + Elf_Internal_Sym *sym; { - asection *output_text_section; - - output_text_section = bfd_get_section_by_name (output_bfd, ".text"); - *secptr = bfd_make_section (abfd, ".hppa_linker_stubs"); - bfd_set_section_flags (abfd, *secptr, - SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD - | SEC_RELOC | SEC_CODE | SEC_READONLY); - (*secptr)->output_section = output_text_section->output_section; - (*secptr)->output_offset = 0; - - /* Set up the ELF section header for this new section. This - is basically the same processing as elf_make_sections(). - elf_make_sections is static and therefore not accessable - here. */ - { - Elf_Internal_Shdr *this_hdr; - this_hdr = &elf_section_data ((*secptr))->this_hdr; - - /* Set the sizes of this section. The contents have already - been set up ?!? */ - this_hdr->sh_addr = (*secptr)->vma; - this_hdr->sh_size = (*secptr)->_raw_size; - - /* Set appropriate flags for sections with relocations. */ - if ((*secptr)->flags & SEC_RELOC) - { - Elf_Internal_Shdr *rela_hdr; - int use_rela_p = get_elf_backend_data (abfd)->use_rela_p; - - rela_hdr = &elf_section_data ((*secptr))->rel_hdr; - - if (use_rela_p) - { - rela_hdr->sh_type = SHT_RELA; - rela_hdr->sh_entsize = sizeof (Elf32_External_Rela); - } - else - { - rela_hdr->sh_type = SHT_REL; - rela_hdr->sh_entsize = sizeof (Elf32_External_Rel); - } - rela_hdr->sh_flags = 0; - rela_hdr->sh_addr = 0; - rela_hdr->sh_offset = 0; - rela_hdr->sh_addralign = 0; - rela_hdr->size = 0; - } - - if ((*secptr)->flags & SEC_ALLOC) - this_hdr->sh_flags |= SHF_ALLOC; - - if (!((*secptr)->flags & SEC_READONLY)) - this_hdr->sh_flags |= SHF_WRITE; - - if ((*secptr)->flags & SEC_CODE) - this_hdr->sh_flags |= SHF_EXECINSTR; - } - - bfd_set_section_alignment (abfd, *secptr, 2); -} + struct elf32_hppa_link_hash_table *hplink; + bfd *dynobj; -/* Return nonzero if a long-call stub will be needed to call the - function (symbol in RELOC_ENTRY). */ + hplink = hppa_link_hash_table (info); + dynobj = hplink->root.dynobj; -static int -hppa_elf_long_branch_needed_p (abfd, asec, reloc_entry, symbol, insn) - bfd *abfd; - asection *asec; - arelent *reloc_entry; - asymbol *symbol; - unsigned insn; -{ - long sym_value = get_symbol_value (symbol); - int fmt = reloc_entry->howto->bitsize; - unsigned char op = get_opcode (insn); - unsigned raddr; - -#define too_far(val,num_bits) \ - ((int)(val) > (1 << (num_bits)) - 1) || ((int)(val) < (-1 << (num_bits))) - - switch (op) - { - case BL: - raddr = - reloc_entry->address + asec->output_offset + asec->output_section->vma; - /* If the symbol and raddr (relocated addr?) are too far away from - each other, then a long-call stub will be needed. */ - if (too_far (sym_value - raddr, fmt + 1)) - return 1; - break; - } - return 0; -} + if (h->plt.offset != (bfd_vma) -1) + { + bfd_vma value; -/* Search the given section and determine if linker stubs will be - needed for any calls within that section. + if (h->plt.offset & 1) + abort (); - Return any new stub symbols created. + /* This symbol has an entry in the procedure linkage table. Set + it up. - Used out of hppaelf.em in the linker. */ - -asymbol * -hppa_look_for_stubs_in_section (stub_bfd, abfd, output_bfd, asec, - new_sym_cnt, link_info) - bfd *stub_bfd; - bfd *abfd; - bfd *output_bfd; - asection *asec; - int *new_sym_cnt; - struct bfd_link_info *link_info; -{ - int i; - arg_reloc_type stub_types[5]; - asymbol *new_syms = NULL; - int new_cnt = 0; - int new_max = 0; - - /* Relocations are in different places depending on whether this is - an output section or an input section. Also, the relocations are - in different forms. Sigh. Luckily, we have bfd_canonicalize_reloc() - to straighten this out for us . */ - if (asec->reloc_count > 0) - { - arelent **reloc_vector - = (arelent **) alloca (asec->reloc_count * (sizeof (arelent *) + 1)); - - /* Make sure the canonical symbols are hanging around in a convient - location. */ - if (bfd_get_outsymbols (abfd) == NULL) - { - size_t symsize; - - symsize = get_symtab_upper_bound (abfd); - abfd->outsymbols = (asymbol **) bfd_alloc (abfd, symsize); - if (!abfd->outsymbols) - { - bfd_set_error (bfd_error_no_memory); - return false; - } - abfd->symcount = bfd_canonicalize_symtab (abfd, abfd->outsymbols); + 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); } - /* Now get the relocations. */ - bfd_canonicalize_reloc (abfd, asec, reloc_vector, - bfd_get_outsymbols (abfd)); - - /* Examine each relocation entry in this section. */ - for (i = 0; i < asec->reloc_count; i++) + if (! ((struct elf32_hppa_link_hash_entry *) h)->pic_call) { - arelent *rle = reloc_vector[i]; - - switch (rle->howto->type) + 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) { - /* Any call could need argument relocation stubs, and - some may need long-call stubs. */ - case R_HPPA_ABS_CALL_11: - case R_HPPA_ABS_CALL_14: - case R_HPPA_ABS_CALL_17: - case R_HPPA_ABS_CALL_L21: - case R_HPPA_ABS_CALL_R11: - case R_HPPA_ABS_CALL_R14: - case R_HPPA_ABS_CALL_R17: - case R_HPPA_ABS_CALL_LS21: - case R_HPPA_ABS_CALL_RS11: - case R_HPPA_ABS_CALL_RS14: - case R_HPPA_ABS_CALL_RS17: - case R_HPPA_ABS_CALL_LD21: - case R_HPPA_ABS_CALL_RD11: - case R_HPPA_ABS_CALL_RD14: - case R_HPPA_ABS_CALL_RD17: - case R_HPPA_ABS_CALL_LR21: - case R_HPPA_ABS_CALL_RR14: - case R_HPPA_ABS_CALL_RR17: - case R_HPPA_PCREL_CALL_11: - case R_HPPA_PCREL_CALL_14: - case R_HPPA_PCREL_CALL_17: - case R_HPPA_PCREL_CALL_12: - case R_HPPA_PCREL_CALL_L21: - case R_HPPA_PCREL_CALL_R11: - case R_HPPA_PCREL_CALL_R14: - case R_HPPA_PCREL_CALL_R17: - case R_HPPA_PCREL_CALL_LS21: - case R_HPPA_PCREL_CALL_RS11: - case R_HPPA_PCREL_CALL_RS14: - case R_HPPA_PCREL_CALL_RS17: - case R_HPPA_PCREL_CALL_LD21: - case R_HPPA_PCREL_CALL_RD11: - case R_HPPA_PCREL_CALL_RD14: - case R_HPPA_PCREL_CALL_RD17: - case R_HPPA_PCREL_CALL_LR21: - case R_HPPA_PCREL_CALL_RR14: - case R_HPPA_PCREL_CALL_RR17: - { - symext_entryS caller_ar - = (symext_entryS) HPPA_R_ARG_RELOC (rle->addend); - unsigned insn[2]; - - /* We'll need this for the long-call checks. */ - bfd_get_section_contents (abfd, asec, insn, rle->address, - sizeof(insn)); - - /* See if this call needs an argument relocation stub. */ - if (hppa_elf_arg_reloc_needed_p (abfd, rle, stub_types, - caller_ar)) - { - /* Generate a stub and keep track of the new symbol. */ - asymbol *r; - - if (new_cnt == new_max) - { - new_max += STUB_SYM_BUFFER_INC; - new_syms = (asymbol *) - realloc (new_syms, new_max * sizeof (asymbol)); - if (new_syms == NULL) - abort (); - } - - /* Build the argument relocation stub. */ - r = hppa_elf_build_linker_stub (stub_bfd, output_bfd, - link_info, rle, - stub_types, true, insn, - HPPA_STUB_ARG_RELOC); - new_syms[new_cnt++] = *r; - } - - /* See if this call needs a long-call stub. */ - if (hppa_elf_long_branch_needed_p (abfd, asec, rle, - rle->sym_ptr_ptr[0], - insn[0])) - { - /* Generate a stub and keep track of the new symbol. */ - asymbol *r; - - if (new_cnt == new_max) - { - new_max += STUB_SYM_BUFFER_INC; - new_syms = (asymbol *) - realloc (new_syms, (new_max * sizeof (asymbol))); - if (! new_syms) - abort (); - } - - /* Build the long-call stub. */ - r = hppa_elf_build_linker_stub (stub_bfd, output_bfd, - link_info, rle, - NULL, true, insn, - HPPA_STUB_LONG_CALL); - new_syms[new_cnt++] = *r; - } - } - break; - - /* PLABELs may need argument relocation stubs. */ - case R_HPPA_PLABEL_32: - case R_HPPA_PLABEL_11: - case R_HPPA_PLABEL_14: - case R_HPPA_PLABEL_L21: - case R_HPPA_PLABEL_R11: - case R_HPPA_PLABEL_R14: - { - /* On a plabel relocation, assume the arguments of the - caller are set up in general registers (indirect - calls only use general registers. - NOTE: 0x155 = ARGW0=GR,ARGW1=GR,ARGW2=GR,RETVAL=GR. */ - symext_entryS caller_ar = (symext_entryS) 0x155; - unsigned insn[2]; - - /* Do we really need this? */ - bfd_get_section_contents (abfd, asec, insn, rle->address, - sizeof(insn)); - - /* See if this call needs an argument relocation stub. */ - if (hppa_elf_arg_reloc_needed_p (abfd, rle, stub_types, - caller_ar)) - { - /* Generate a plabel stub and keep track of the - new symbol. */ - asymbol *r; - int rtn_adjust; - - if (new_cnt == new_max) - { - new_max += STUB_SYM_BUFFER_INC; - new_syms = (asymbol *) realloc (new_syms, new_max - * sizeof (asymbol)); - } - - /* Determine whether a return adjustment - (see the relocation code for relocation type - R_HPPA_STUB_CALL_17) is possible. Basically, - determine whether we are looking at a branch or not. */ - if (rle->howto->type == R_HPPA_PLABEL_32) - rtn_adjust = false; - else - { - switch (get_opcode(insn[0])) - { - case BLE: - case BE: - rtn_adjust = true; - break; - default: - rtn_adjust = false; - } - } - - /* Build the argument relocation stub. */ - r = hppa_elf_build_linker_stub (stub_bfd, output_bfd, - link_info, rle, stub_types, - rtn_adjust, insn, - HPPA_STUB_ARG_RELOC); - new_syms[new_cnt++] = *r; - } - } - break; - - default: - break; + /* To support lazy linking, the function pointer is + initialised to point to a special stub stored at the + end of the .plt. This is not done for plt entries + with a base-relative dynamic relocation. */ + value = (hplink->splt->output_offset + + hplink->splt->output_section->vma + + hplink->splt->_raw_size + - sizeof (plt_stub) + + PLT_STUB_ENTRY); + rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_IPLT); + rel.r_addend = 0; + } + else + { + /* This symbol has been marked to become local, and is + used by a plabel so must be kept in the .plt. */ + rel.r_info = ELF32_R_INFO (0, R_PARISC_IPLT); + rel.r_addend = value; } + + bfd_elf32_swap_reloca_out (hplink->splt->output_section->owner, + &rel, + ((Elf32_External_Rela *) + hplink->srelplt->contents + + hplink->srelplt->reloc_count)); + hplink->srelplt->reloc_count++; } - } - /* Return the new symbols and update the counters. */ - *new_sym_cnt = new_cnt; - return new_syms; -} + 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); + } -/* Set the contents of a particular section at a particular location. */ + 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; + } + } -static boolean -hppa_elf_set_section_contents (abfd, section, location, offset, count) - bfd *abfd; - sec_ptr section; - PTR location; - file_ptr offset; - bfd_size_type count; -{ - /* Linker stubs are handled a little differently. */ - if (! strcmp (section->name, ".hppa_linker_stubs")) + if (h->got.offset != (bfd_vma) -1) { - if (linker_stubs_max_size < offset + count) + Elf_Internal_Rela rel; + + /* This symbol has an entry in the global offset table. Set it + up. */ + + rel.r_offset = ((h->got.offset &~ (bfd_vma) 1) + + hplink->sgot->output_offset + + hplink->sgot->output_section->vma); + + /* If this is a -Bsymbolic link and the symbol is defined + locally or was forced to be local because of a version file, + we just want to emit a RELATIVE reloc. The entry in the + global offset table will already have been initialized in the + relocate_section function. */ + if (info->shared + && (info->symbolic || h->dynindx == -1) + && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) + { + 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 { - linker_stubs_max_size = offset + count + STUB_ALLOC_INCR; - linker_stubs = (char *)realloc (linker_stubs, linker_stubs_max_size); - if (! linker_stubs) + if ((h->got.offset & 1) != 0) abort (); + bfd_put_32 (output_bfd, (bfd_vma) 0, + hplink->sgot->contents + h->got.offset); + rel.r_info = ELF32_R_INFO (h->dynindx, R_PARISC_DIR32); + rel.r_addend = 0; } - if (offset + count > linker_stubs_size) - linker_stubs_size = offset + count; - - /* Set the contents. */ - memcpy(linker_stubs + offset, location, count); - return (true); + bfd_elf32_swap_reloca_out (output_bfd, &rel, + ((Elf32_External_Rela *) + hplink->srelgot->contents + + hplink->srelgot->reloc_count)); + ++hplink->srelgot->reloc_count; } - else - /* For everything but the linker stub section, use the generic - code. */ - return bfd_elf32_set_section_contents (abfd, section, location, - offset, count); -} - -/* Get the contents of the given section. - - This is special for PA ELF because some sections (such as linker stubs) - may reside in memory rather than on disk, or in the case of the symbol - extension section, the contents may need to be generated from other - information contained in the BFD. */ - -boolean -hppa_elf_get_section_contents (abfd, section, location, offset, count) - bfd *abfd; - sec_ptr section; - PTR location; - file_ptr offset; - bfd_size_type count; -{ - /* If this is the linker stub section, then its contents are contained - in memory rather than on disk. FIXME. Is that always right? What - about the case where a final executable is read in and a user tries - to get the contents of this section? In that case the contents would - be on disk like everything else. */ - if (strcmp (section->name, ".hppa_linker_stubs") == 0) - { - elf32_hppa_stub_description *stub_desc = find_stubs (abfd, section); - - if (count == 0) - return true; - - /* Sanity check our arguments. */ - if ((bfd_size_type) (offset + count) > section->_raw_size - || (bfd_size_type) (offset + count) > stub_desc->real_size) - return (false); - - memcpy (location, stub_desc->stub_contents + offset, count); - return (true); - } - - /* The symbol extension section also needs special handling. Its - contents might be on the disk, in memory, or still need to - be generated. */ - else if (strcmp (section->name, ".hppa_symextn") == 0) - { - /* If there are no output sections, then read the contents of the - symbol extension section from disk. */ - if (section->output_section == NULL - && abfd->direction == read_direction) - { - return bfd_generic_get_section_contents (abfd, section, location, - offset, count); - } - - /* If this is the first time through, and there are output sections, - then build the symbol extension section based on other information - contained in the BFD. */ - else if (! symext_chain_built) - { - int i; - int *symtab_map = - (int *) elf_sym_extra (section->output_section->owner); - - for (i = 0; i < section->output_section->owner->symcount; i++) - { - elf_hppa_tc_symbol (section->output_section->owner, - ((elf_symbol_type *) - section->output_section->owner->outsymbols[i]), - symtab_map[i], &symext_rootP, &symext_lastP); - } - symext_chain_built++; - elf_hppa_tc_make_sections (section->output_section->owner, - symext_rootP); - } - /* At this point we know that the symbol extension section has been - built. We just need to copy it into the user's buffer. */ - if (count == 0) - return true; - - /* Sanity check our arguments. */ - if ((bfd_size_type) (offset + count) > section->_raw_size - || (bfd_size_type) (offset + count) > symextn_contents_real_size) - return (false); - - memcpy (location, - (char *)symextn_contents + section->output_offset + offset, - count); - return (true); - } - else - /* It's not the symbol extension or linker stub sections, use - the generic routines. */ - return bfd_generic_get_section_contents (abfd, section, location, - offset, count); -} + if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0) + { + asection *s; + Elf_Internal_Rela rel; -/* Translate from an elf into field into a howto relocation pointer. */ + /* This symbol needs a copy reloc. Set it up. */ -static void -elf_info_to_howto (abfd, cache_ptr, dst) - bfd *abfd; - arelent *cache_ptr; - Elf32_Internal_Rela *dst; -{ - BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_HPPA_UNIMPLEMENTED); - cache_ptr->howto = &elf_hppa_howto_table[ELF32_R_TYPE (dst->r_info)]; -} + if (! (h->dynindx != -1 + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak))) + abort (); -/* Do PA ELF specific processing for symbols. Needed to find the - value of $global$. */ + 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; + } -static void -elf32_hppa_backend_symbol_processing (abfd, sym) - bfd *abfd; - asymbol *sym; -{ - /* Is this a definition of $global$? If so, keep it because it will be - needed if any relocations are performed. */ - if (!strcmp (sym->name, "$global$") - && sym->section != &bfd_und_section) + /* 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)) { - global_symbol = sym; + sym->st_shndx = SHN_ABS; } + + return true; } -/* Do some PA ELF specific work after reading in the symbol table. - In particular attach the argument relocation from the - symbol extension section to the appropriate symbols. */ +/* Finish up the dynamic sections. */ + static boolean -elf32_hppa_backend_symbol_table_processing (abfd, esyms,symcnt) - bfd *abfd; - elf_symbol_type *esyms; - int symcnt; +elf32_hppa_finish_dynamic_sections (output_bfd, info) + bfd *output_bfd; + struct bfd_link_info *info; { - Elf32_Internal_Shdr *symextn_hdr = - bfd_elf_find_section (abfd, SYMEXTN_SECTION_NAME); - int i, current_sym_idx = 0; + bfd *dynobj; + struct elf32_hppa_link_hash_table *hplink; + asection *sdyn; - /* If no symbol extension existed, then all symbol extension information - is assumed to be zero. */ - if (symextn_hdr == NULL) - { - for (i = 0; i < symcnt; i++) - esyms[i].tc_data.hppa_arg_reloc = 0; - return (true); - } + hplink = hppa_link_hash_table (info); + dynobj = hplink->root.dynobj; - /* Allocate a buffer of the appropriate size for the symextn section. */ - symextn_hdr->contents = bfd_zalloc(abfd,symextn_hdr->sh_size); - if (!symextn_hdr->contents) - { - bfd_set_error (bfd_error_no_memory); - return false; - } - symextn_hdr->size = symextn_hdr->sh_size; - - /* Read in the symextn section. */ - if (bfd_seek (abfd, symextn_hdr->sh_offset, SEEK_SET) == -1) - { - bfd_set_error (bfd_error_system_call); - return (false); - } - if (bfd_read ((PTR) symextn_hdr->contents, 1, symextn_hdr->size, abfd) - != symextn_hdr->size) - { - bfd_set_error (bfd_error_system_call); - return (false); - } + sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); - /* Parse entries in the symbol extension section, updating the symtab - entries as we go */ - for (i = 0; i < symextn_hdr->size / sizeof(symext_entryS); i++) + if (hplink->root.dynamic_sections_created) { - symext_entryS *seP = ((symext_entryS *)symextn_hdr->contents) + i; - int se_value = ELF32_HPPA_SX_VAL (*seP); - int se_type = ELF32_HPPA_SX_TYPE (*seP); - - switch (se_type) - { - case HPPA_SXT_NULL: - break; + Elf32_External_Dyn *dyncon, *dynconend; - case HPPA_SXT_SYMNDX: - if (se_value >= symcnt) - { - bfd_set_error (bfd_error_bad_value); - return (false); - } - current_sym_idx = se_value - 1; - break; - - case HPPA_SXT_ARG_RELOC: - esyms[current_sym_idx].tc_data.hppa_arg_reloc = se_value; - break; - - default: - bfd_set_error (bfd_error_bad_value); - return (false); - } - } - return (true); -} + if (sdyn == NULL) + abort (); -/* Perform on PA ELF specific processing once a section has been - read in. In particular keep the symbol indexes correct for - the symbol extension information. */ + 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; -static boolean -elf32_hppa_backend_section_processing (abfd, secthdr) - bfd *abfd; - Elf32_Internal_Shdr *secthdr; -{ - int i, j, k; + bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); - if (secthdr->sh_type == SHT_HPPA_SYMEXTN) - { - for (i = 0; i < secthdr->size / sizeof (symext_entryS); i++) - { - symext_entryS *seP = ((symext_entryS *)secthdr->contents) + i; - int se_value = ELF32_HPPA_SX_VAL (*seP); - int se_type = ELF32_HPPA_SX_TYPE (*seP); - - switch (se_type) + switch (dyn.d_tag) { - case HPPA_SXT_NULL: + default: break; - - case HPPA_SXT_SYMNDX: - for (j = 0; j < abfd->symcount; j++) - { - /* Locate the map entry for this symbol and modify the - symbol extension section symbol index entry to reflect - the new symbol table index. */ - for (k = 0; k < elf32_hppa_symextn_map_size; k++) - { - if (elf32_hppa_symextn_map[k].old_index == se_value - && elf32_hppa_symextn_map[k].bfd - == abfd->outsymbols[j]->the_bfd - && elf32_hppa_symextn_map[k].sym - == abfd->outsymbols[j]) - { - bfd_put_32(abfd, - ELF32_HPPA_SX_WORD (HPPA_SXT_SYMNDX, j), - (char *)seP); - } - } - } + + 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 HPPA_SXT_ARG_RELOC: + + 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; - - default: - bfd_set_error (bfd_error_bad_value); - return (false); } } } - return true; -} - -/* What does this really do? Just determine if there is an appropriate - mapping from ELF section headers to backend sections? More symbol - extension braindamage. */ -static boolean -elf32_hppa_backend_section_from_shdr (abfd, hdr, name) - bfd *abfd; - Elf32_Internal_Shdr *hdr; - char *name; -{ - asection *newsect; + if (hplink->sgot != NULL && 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; + } - if (hdr->sh_type == SHT_HPPA_SYMEXTN) + if (hplink->splt != NULL && hplink->splt->_raw_size != 0) { - BFD_ASSERT (strcmp (name, ".hppa_symextn") == 0); + /* Set plt entry size. */ + elf_section_data (hplink->splt->output_section) + ->this_hdr.sh_entsize = PLT_ENTRY_SIZE; - /* Bits that get saved. This one is real. */ - if (!hdr->rawdata) + if (hplink->need_plt_stub) { - newsect = bfd_make_section (abfd, name); - if (newsect != NULL) + /* 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)) { - newsect->vma = hdr->sh_addr; - newsect->_raw_size = hdr->sh_size; - newsect->filepos = hdr->sh_offset; - newsect->flags |= SEC_HAS_CONTENTS; - newsect->alignment_power = hdr->sh_addralign; - - if (hdr->sh_flags & SHF_ALLOC) - { - newsect->flags |= SEC_ALLOC; - newsect->flags |= SEC_LOAD; - } - - if (!(hdr->sh_flags & SHF_WRITE)) - newsect->flags |= SEC_READONLY; - - if (hdr->sh_flags & SHF_EXECINSTR) - newsect->flags |= SEC_CODE; - else - newsect->flags |= SEC_DATA; - - hdr->rawdata = (void *) newsect; + (*_bfd_error_handler) + (_(".got section not immediately after .plt section")); + return false; } } - return true; } - return false; + + return true; } -/* Return true if the given section is a fake section. */ +/* Tweak the OSABI field of the elf header. */ -static boolean -elf32_hppa_backend_fake_sections (abfd, secthdr, asect) +static void +elf32_hppa_post_process_headers (abfd, link_info) bfd *abfd; - Elf_Internal_Shdr *secthdr; - asection *asect; + struct bfd_link_info *link_info ATTRIBUTE_UNUSED; { + Elf_Internal_Ehdr * i_ehdrp; - if (strcmp(asect->name, ".hppa_symextn") == 0) - { - secthdr->sh_type = SHT_HPPA_SYMEXTN; - secthdr->sh_flags = 0; - secthdr->sh_info = elf_section_data(asect)->rel_hdr.sh_link; - secthdr->sh_link = elf_onesymtab(abfd); - return true; - } + i_ehdrp = elf_elfheader (abfd); - if (!strcmp (asect->name, ".hppa_unwind")) + if (strcmp (bfd_get_target (abfd), "elf32-hppa-linux") == 0) { - secthdr->sh_type = SHT_PROGBITS; - /* Unwind descriptors are not part of the program memory image. */ - secthdr->sh_flags = 0; - secthdr->sh_info = 0; - secthdr->sh_link = 0; - secthdr->sh_entsize = 16; - return true; + i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; } - - /* @@ Should this be CPU specific?? KR */ - if (!strcmp (asect->name, ".stabstr")) + else { - secthdr->sh_type = SHT_STRTAB; - secthdr->sh_flags = 0; - secthdr->sh_info = 0; - secthdr->sh_link = 0; - secthdr->sh_entsize = 0; - return true; + i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_HPUX; } - - return false; } -/* Return true if there is a mapping from bfd section into a - backend section. */ - -static boolean -elf32_hppa_backend_section_from_bfd_section (abfd, hdr, asect, ignored) - bfd *abfd; - Elf32_Internal_Shdr *hdr; - asection *asect; - int *ignored; +/* 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 (hdr->sh_type == SHT_HPPA_SYMEXTN) - { - if (hdr->rawdata) - { - if (((struct sec *) (hdr->rawdata)) == asect) - { - BFD_ASSERT (strcmp (asect->name, ".hppa_symextn") == 0); - return true; - } - } - } - else if (hdr->sh_type == SHT_STRTAB) - { - if (hdr->rawdata) - { - if (((struct sec *) (hdr->rawdata)) == asect) - { - BFD_ASSERT (strcmp (asect->name, ".stabstr") == 0); - return true; - } - } - } - - return false; + if (ELF_ST_TYPE (elf_sym->st_info) == STT_PARISC_MILLI) + return STT_PARISC_MILLI; + else + return type; } -#define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup -#define elf_backend_section_from_bfd_section elf32_hppa_backend_section_from_bfd_section - -#define elf_backend_symbol_processing elf32_hppa_backend_symbol_processing -#define elf_backend_symbol_table_processing elf32_hppa_backend_symbol_table_processing - -#define bfd_generic_get_section_contents hppa_elf_get_section_contents -#define bfd_elf32_set_section_contents hppa_elf_set_section_contents - -#define elf_backend_section_processing elf32_hppa_backend_section_processing - -#define elf_backend_section_from_shdr elf32_hppa_backend_section_from_shdr -#define elf_backend_fake_sections elf32_hppa_backend_fake_sections +/* Misc BFD support code. */ +#define bfd_elf32_bfd_is_local_label_name elf_hppa_is_local_label_name +#define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup +#define elf_info_to_howto elf_hppa_info_to_howto +#define elf_info_to_howto_rel elf_hppa_info_to_howto_rel + +/* Stuff for the BFD linker. */ +#define bfd_elf32_bfd_final_link elf32_hppa_final_link +#define bfd_elf32_bfd_link_hash_table_create elf32_hppa_link_hash_table_create +#define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook +#define elf_backend_adjust_dynamic_symbol elf32_hppa_adjust_dynamic_symbol +#define elf_backend_check_relocs elf32_hppa_check_relocs +#define elf_backend_create_dynamic_sections elf32_hppa_create_dynamic_sections +#define elf_backend_fake_sections elf_hppa_fake_sections +#define elf_backend_relocate_section elf32_hppa_relocate_section +#define elf_backend_hide_symbol elf32_hppa_hide_symbol +#define elf_backend_finish_dynamic_symbol elf32_hppa_finish_dynamic_symbol +#define elf_backend_finish_dynamic_sections elf32_hppa_finish_dynamic_sections +#define elf_backend_size_dynamic_sections elf32_hppa_size_dynamic_sections +#define elf_backend_gc_mark_hook elf32_hppa_gc_mark_hook +#define elf_backend_gc_sweep_hook elf32_hppa_gc_sweep_hook +#define elf_backend_object_p elf32_hppa_object_p +#define elf_backend_final_write_processing elf_hppa_final_write_processing +#define elf_backend_post_process_headers elf32_hppa_post_process_headers +#define elf_backend_get_symbol_type elf32_hppa_elf_get_symbol_type + +#define elf_backend_can_gc_sections 1 +#define elf_backend_plt_alignment 2 +#define elf_backend_want_got_plt 0 +#define elf_backend_plt_readonly 0 +#define elf_backend_want_plt_sym 0 +#define elf_backend_got_header_size 8 #define TARGET_BIG_SYM bfd_elf32_hppa_vec #define TARGET_BIG_NAME "elf32-hppa" #define ELF_ARCH bfd_arch_hppa -#define ELF_MACHINE_CODE EM_HPPA +#define ELF_MACHINE_CODE EM_PARISC #define ELF_MAXPAGESIZE 0x1000 #include "elf32-target.h" + +#undef TARGET_BIG_SYM +#define TARGET_BIG_SYM bfd_elf32_hppa_linux_vec +#undef TARGET_BIG_NAME +#define TARGET_BIG_NAME "elf32-hppa-linux" + +#define INCLUDED_TARGET_FILE 1 +#include "elf32-target.h"