| /* BFD back-end for HP PA-RISC ELF files. |
| Copyright (C) 1990, 91, 92, 93, 94, 95, 96, 1997 |
| Free Software Foundation, Inc. |
| |
| Written by |
| |
| Center for Software Science |
| Department of Computer Science |
| University of Utah |
| |
| This file is part of BFD, the Binary File Descriptor library. |
| |
| This program is free software; you can redistribute it and/or modify |
| it under the terms of the GNU General Public License as published by |
| the Free Software Foundation; either version 2 of the License, or |
| (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| |
| #include "bfd.h" |
| #include "sysdep.h" |
| #include "bfdlink.h" |
| #include "libbfd.h" |
| #include "elf-bfd.h" |
| |
| /* The internal type of a symbol table extension entry. */ |
| typedef unsigned long symext_entryS; |
| |
| /* The external type of a symbol table extension entry. */ |
| #define ELF32_PARISC_SX_SIZE (4) |
| #define ELF32_PARISC_SX_GET(bfd, addr) bfd_h_get_32 ((bfd), (addr)) |
| #define ELF32_PARISC_SX_PUT(bfd, val, addr) \ |
| bfd_h_put_32 ((bfd), (val), (addr)) |
| |
| /* HPPA symbol table extension entry types */ |
| enum elf32_hppa_symextn_types |
| { |
| PARISC_SXT_NULL, |
| PARISC_SXT_SYMNDX, |
| PARISC_SXT_ARG_RELOC, |
| }; |
| |
| /* These macros compose and decompose the value of a symextn entry: |
| |
| entry_type = ELF32_PARISC_SX_TYPE(word); |
| entry_value = ELF32_PARISC_SX_VAL(word); |
| word = ELF32_PARISC_SX_WORD(type,val); */ |
| |
| #define ELF32_PARISC_SX_TYPE(p) ((p) >> 24) |
| #define ELF32_PARISC_SX_VAL(p) ((p) & 0xFFFFFF) |
| #define ELF32_PARISC_SX_WORD(type,val) (((type) << 24) + (val & 0xFFFFFF)) |
| |
| /* The following was added facilitate implementation of the .hppa_symextn |
| section. This section is built after the symbol table is built in the |
| elf_write_object_contents routine (called from bfd_close). It is built |
| so late because it requires information that is not known until |
| the symbol and string table sections have been allocated, and |
| the symbol table has been built. */ |
| |
| #define SYMEXTN_SECTION_NAME ".PARISC.symext" |
| |
| struct symext_chain |
| { |
| symext_entryS entry; |
| struct symext_chain *next; |
| }; |
| |
| typedef struct symext_chain symext_chainS; |
| |
| /* We use three different 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. |
| |
| The last hash table keeps track of argument location information needed |
| to build hash tables. Each function with nonzero argument location |
| bits will have an entry in this table. */ |
| |
| /* Hash table for linker stubs. */ |
| |
| struct elf32_hppa_stub_hash_entry |
| { |
| /* Base hash table entry structure, we can get the name of the stub |
| (and thus know exactly what actions it performs) from the base |
| hash table entry. */ |
| struct bfd_hash_entry root; |
| |
| /* Offset of the beginning of this stub. */ |
| bfd_vma offset; |
| |
| /* Given the symbol's value and its section we can determine its final |
| value when building the stubs (so the stub knows where to jump. */ |
| symvalue target_value; |
| asection *target_section; |
| }; |
| |
| struct elf32_hppa_stub_hash_table |
| { |
| /* The hash table itself. */ |
| struct bfd_hash_table root; |
| |
| /* The stub BFD. */ |
| bfd *stub_bfd; |
| |
| /* Where to place the next stub. */ |
| bfd_byte *location; |
| |
| /* Current offset in the stub section. */ |
| unsigned int offset; |
| |
| }; |
| |
| /* Hash table for argument location information. */ |
| |
| struct elf32_hppa_args_hash_entry |
| { |
| /* Base hash table entry structure. */ |
| struct bfd_hash_entry root; |
| |
| /* The argument location bits for this entry. */ |
| int arg_bits; |
| }; |
| |
| struct elf32_hppa_args_hash_table |
| { |
| /* The hash table itself. */ |
| struct bfd_hash_table root; |
| }; |
| |
| struct elf32_hppa_link_hash_entry |
| { |
| struct elf_link_hash_entry root; |
| }; |
| |
| struct elf32_hppa_link_hash_table |
| { |
| /* The main hash table. */ |
| struct elf_link_hash_table root; |
| |
| /* The stub hash table. */ |
| struct elf32_hppa_stub_hash_table *stub_hash_table; |
| |
| /* The argument relocation bits hash table. */ |
| struct elf32_hppa_args_hash_table *args_hash_table; |
| |
| /* A count of the number of output symbols. */ |
| unsigned int output_symbol_count; |
| |
| /* Stuff so we can handle DP relative relocations. */ |
| long global_value; |
| int global_sym_defined; |
| }; |
| |
| /* FIXME. */ |
| #define ARGUMENTS 0 |
| #define RETURN_VALUE 1 |
| |
| /* The various argument relocations that may be performed. */ |
| typedef enum |
| { |
| /* No relocation. */ |
| NO, |
| /* Relocate 32 bits from GR to FP register. */ |
| GF, |
| /* Relocate 64 bits from a GR pair to FP pair. */ |
| GD, |
| /* Relocate 32 bits from FP to GR. */ |
| FG, |
| /* Relocate 64 bits from FP pair to GR pair. */ |
| DG, |
| } arg_reloc_type; |
| |
| /* What is being relocated (eg which argument or the return value). */ |
| typedef enum |
| { |
| ARG0, ARG1, ARG2, ARG3, RET, |
| } arg_reloc_location; |
| |
| |
| /* ELF32/HPPA relocation support |
| |
| This file contains ELF32/HPPA relocation support as specified |
| in the Stratus FTX/Golf Object File Format (SED-1762) dated |
| February 1994. */ |
| |
| #include "elf32-hppa.h" |
| #include "hppa_stubs.h" |
| |
| static bfd_reloc_status_type hppa_elf_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| |
| static unsigned long hppa_elf_relocate_insn |
| PARAMS ((bfd *, asection *, unsigned long, unsigned long, long, |
| long, unsigned long, unsigned long, unsigned long)); |
| |
| static bfd_reloc_status_type hppa_elf_reloc |
| PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd*, char **)); |
| |
| static reloc_howto_type * elf_hppa_reloc_type_lookup |
| PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| |
| static boolean elf32_hppa_set_section_contents |
| PARAMS ((bfd *, sec_ptr, PTR, file_ptr, bfd_size_type)); |
| |
| static void elf32_hppa_info_to_howto |
| PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); |
| |
| static boolean elf32_hppa_backend_symbol_table_processing |
| PARAMS ((bfd *, elf_symbol_type *, unsigned int)); |
| |
| static void elf32_hppa_backend_begin_write_processing |
| PARAMS ((bfd *, struct bfd_link_info *)); |
| |
| static void elf32_hppa_backend_final_write_processing |
| PARAMS ((bfd *, boolean)); |
| |
| static void add_entry_to_symext_chain |
| PARAMS ((bfd *, unsigned int, unsigned int, symext_chainS **, |
| symext_chainS **)); |
| |
| static void |
| elf_hppa_tc_make_sections PARAMS ((bfd *, symext_chainS *)); |
| |
| static boolean hppa_elf_is_local_label_name PARAMS ((bfd *, const char *)); |
| |
| static boolean elf32_hppa_add_symbol_hook |
| PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, |
| const char **, flagword *, asection **, bfd_vma *)); |
| |
| static bfd_reloc_status_type elf32_hppa_bfd_final_link_relocate |
| PARAMS ((reloc_howto_type *, bfd *, bfd *, asection *, |
| bfd_byte *, bfd_vma, bfd_vma, bfd_vma, struct bfd_link_info *, |
| asection *, const char *, int)); |
| |
| static struct bfd_link_hash_table *elf32_hppa_link_hash_table_create |
| PARAMS ((bfd *)); |
| |
| static struct bfd_hash_entry * |
| elf32_hppa_stub_hash_newfunc |
| PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| |
| static struct bfd_hash_entry * |
| elf32_hppa_args_hash_newfunc |
| PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| |
| 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_stub_hash_table_init |
| PARAMS ((struct elf32_hppa_stub_hash_table *, bfd *, |
| struct bfd_hash_entry *(*) PARAMS ((struct bfd_hash_entry *, |
| struct bfd_hash_table *, |
| const char *)))); |
| |
| static boolean |
| elf32_hppa_build_one_stub PARAMS ((struct bfd_hash_entry *, PTR)); |
| |
| static boolean |
| elf32_hppa_read_symext_info |
| PARAMS ((bfd *, Elf_Internal_Shdr *, struct elf32_hppa_args_hash_table *, |
| Elf_Internal_Sym *)); |
| |
| static unsigned int elf32_hppa_size_of_stub |
| PARAMS ((unsigned int, unsigned int, bfd_vma, bfd_vma, const char *)); |
| |
| static boolean elf32_hppa_arg_reloc_needed |
| PARAMS ((unsigned int, unsigned int, arg_reloc_type [])); |
| |
| static void elf32_hppa_name_of_stub |
| PARAMS ((unsigned int, unsigned int, bfd_vma, bfd_vma, char *)); |
| |
| static boolean elf32_hppa_size_symext PARAMS ((struct bfd_hash_entry *, PTR)); |
| |
| static boolean elf32_hppa_link_output_symbol_hook |
| PARAMS ((bfd *, struct bfd_link_info *, const char *, |
| Elf_Internal_Sym *, asection *)); |
| |
| /* ELF/PA relocation howto entries. */ |
| |
| static reloc_howto_type elf_hppa_howto_table[ELF_HOWTO_TABLE_SIZE] = |
| { |
| {R_PARISC_NONE, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_NONE"}, |
| /* The values in DIR32 are to placate the check in |
| _bfd_stab_section_find_nearest_line. */ |
| {R_PARISC_DIR32, 0, 2, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR32", false, 0, 0xffffffff, false}, |
| {R_PARISC_DIR21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR21L"}, |
| {R_PARISC_DIR17R, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR17R"}, |
| {R_PARISC_DIR17F, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR17F"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_DIR14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DIR14R"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_PCREL21L, 0, 0, 21, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL21L"}, |
| {R_PARISC_PCREL17R, 0, 0, 17, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL17R"}, |
| {R_PARISC_PCREL17F, 0, 0, 17, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL17F"}, |
| {R_PARISC_PCREL17C, 0, 0, 17, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL17C"}, |
| {R_PARISC_PCREL14R, 0, 0, 14, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL14R"}, |
| {R_PARISC_PCREL14F, 0, 0, 14, true, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PCREL14F"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_DPREL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DPREL21L"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_DPREL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DPREL14R"}, |
| {R_PARISC_DPREL14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DPREL14F"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_DLTREL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTREL21L"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_DLTREL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTREL14R"}, |
| {R_PARISC_DLTREL14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTREL14F"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_DLTIND21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTIND21L"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_DLTIND14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTIND14R"}, |
| {R_PARISC_DLTIND14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_DLTIND14F"}, |
| |
| {R_PARISC_SETBASE, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_SETBASE"}, |
| {R_PARISC_BASEREL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL32"}, |
| {R_PARISC_BASEREL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL21L"}, |
| {R_PARISC_BASEREL17R, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL17R"}, |
| {R_PARISC_BASEREL17F, 0, 0, 17, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL17F"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_BASEREL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL14R"}, |
| {R_PARISC_BASEREL14F, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_BASEREL14F"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_TEXTREL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_TEXTREL32"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_DATAREL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_PLABEL32, 0, 0, 32, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLABEL32"}, |
| {R_PARISC_PLABEL21L, 0, 0, 21, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLABEL21L"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_PLABEL14R, 0, 0, 14, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLABEL14R"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_PLTIND21L, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLTIND21L"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_UNIMPLEMENTED"}, |
| {R_PARISC_PLTIND14R, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLTIND14R"}, |
| {R_PARISC_PLTIND14F, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_PLTIND14F"}, |
| |
| |
| {R_PARISC_COPY, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_COPY"}, |
| {R_PARISC_GLOB_DAT, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_GLOB_DAT"}, |
| {R_PARISC_JMP_SLOT, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_JMP_SLOT"}, |
| {R_PARISC_RELATIVE, 0, 0, 0, false, 0, complain_overflow_bitfield, hppa_elf_reloc, "R_PARISC_RELATIVE"}, |
| |
| {R_PARISC_UNIMPLEMENTED, 0, 0, 0, false, 0, complain_overflow_dont, NULL, "R_PARISC_UNIMPLEMENTED"}, |
| }; |
| |
| /* Where (what register type) is an argument comming from? */ |
| typedef enum |
| { |
| AR_NO, |
| AR_GR, |
| AR_FR, |
| AR_FU, |
| AR_FPDBL1, |
| AR_FPDBL2, |
| } arg_location; |
| |
| /* Horizontal represents the 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 arg_mismatches[6][6] = |
| { |
| {NO, NO, NO, NO, NO, NO}, |
| {NO, NO, GF, NO, GD, NO}, |
| {NO, FG, NO, NO, NO, NO}, |
| {NO, NO, NO, NO, NO, NO}, |
| {NO, DG, NO, NO, NO, NO}, |
| {NO, DG, NO, NO, NO, NO}, |
| }; |
| |
| /* Likewise, but reversed for the return value. */ |
| static CONST arg_reloc_type ret_mismatches[6][6] = |
| { |
| {NO, NO, NO, NO, NO, NO}, |
| {NO, NO, FG, NO, DG, NO}, |
| {NO, GF, NO, NO, NO, NO}, |
| {NO, NO, NO, NO, NO, NO}, |
| {NO, GD, NO, NO, NO, NO}, |
| {NO, GD, NO, NO, NO, NO}, |
| }; |
| |
| /* Misc static crud for symbol extension records. */ |
| static symext_chainS *symext_rootP; |
| static symext_chainS *symext_lastP; |
| static bfd_size_type symext_chain_size; |
| |
| /* FIXME: We should be able to try this static variable! */ |
| static bfd_byte *symextn_contents; |
| |
| |
| /* For linker stub hash tables. */ |
| #define elf32_hppa_stub_hash_lookup(table, string, create, copy) \ |
| ((struct elf32_hppa_stub_hash_entry *) \ |
| bfd_hash_lookup (&(table)->root, (string), (create), (copy))) |
| |
| #define elf32_hppa_stub_hash_traverse(table, func, info) \ |
| (bfd_hash_traverse \ |
| (&(table)->root, \ |
| (boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) (func), \ |
| (info))) |
| |
| /* For linker args hash tables. */ |
| #define elf32_hppa_args_hash_lookup(table, string, create, copy) \ |
| ((struct elf32_hppa_args_hash_entry *) \ |
| bfd_hash_lookup (&(table)->root, (string), (create), (copy))) |
| |
| #define elf32_hppa_args_hash_traverse(table, func, info) \ |
| (bfd_hash_traverse \ |
| (&(table)->root, \ |
| (boolean (*) PARAMS ((struct bfd_hash_entry *, PTR))) (func), \ |
| (info))) |
| |
| #define elf32_hppa_args_hash_table_init(table, newfunc) \ |
| (bfd_hash_table_init \ |
| (&(table)->root, \ |
| (struct bfd_hash_entry *(*) PARAMS ((struct bfd_hash_entry *, \ |
| struct bfd_hash_table *, \ |
| const char *))) (newfunc))) |
| |
| /* For HPPA linker hash table. */ |
| |
| #define elf32_hppa_link_hash_lookup(table, string, create, copy, follow)\ |
| ((struct elf32_hppa_link_hash_entry *) \ |
| elf_link_hash_lookup (&(table)->root, (string), (create), \ |
| (copy), (follow))) |
| |
| #define elf32_hppa_link_hash_traverse(table, func, info) \ |
| (elf_link_hash_traverse \ |
| (&(table)->root, \ |
| (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
| (info))) |
| |
| /* Get the PA ELF linker hash table from a link_info structure. */ |
| |
| #define elf32_hppa_hash_table(p) \ |
| ((struct elf32_hppa_link_hash_table *) ((p)->hash)) |
| |
| |
| /* Extract specific argument location bits for WHICH from |
| the full argument location in AR. */ |
| #define EXTRACT_ARBITS(ar, which) ((ar) >> (8 - ((which) * 2))) & 3 |
| |
| /* Assorted hash table functions. */ |
| |
| /* Initialize an entry in the stub hash table. */ |
| |
| static struct bfd_hash_entry * |
| elf32_hppa_stub_hash_newfunc (entry, table, string) |
| struct bfd_hash_entry *entry; |
| struct bfd_hash_table *table; |
| const char *string; |
| { |
| struct elf32_hppa_stub_hash_entry *ret; |
| |
| 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->offset = 0; |
| ret->target_value = 0; |
| ret->target_section = NULL; |
| } |
| |
| return (struct bfd_hash_entry *) ret; |
| } |
| |
| /* Initialize a stub hash table. */ |
| |
| static boolean |
| elf32_hppa_stub_hash_table_init (table, stub_bfd, newfunc) |
| struct elf32_hppa_stub_hash_table *table; |
| bfd *stub_bfd; |
| struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *, |
| struct bfd_hash_table *, |
| const char *)); |
| { |
| table->offset = 0; |
| table->location = 0; |
| table->stub_bfd = stub_bfd; |
| return (bfd_hash_table_init (&table->root, newfunc)); |
| } |
| |
| /* Initialize an entry in the argument location hash table. */ |
| |
| static struct bfd_hash_entry * |
| elf32_hppa_args_hash_newfunc (entry, table, string) |
| struct bfd_hash_entry *entry; |
| struct bfd_hash_table *table; |
| const char *string; |
| { |
| struct elf32_hppa_args_hash_entry *ret; |
| |
| ret = (struct elf32_hppa_args_hash_entry *) entry; |
| |
| /* Allocate the structure if it has not already been allocated by a |
| subclass. */ |
| if (ret == NULL) |
| ret = ((struct elf32_hppa_args_hash_entry *) |
| bfd_hash_allocate (table, |
| sizeof (struct elf32_hppa_args_hash_entry))); |
| if (ret == NULL) |
| return NULL; |
| |
| /* Call the allocation method of the superclass. */ |
| ret = ((struct elf32_hppa_args_hash_entry *) |
| bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string)); |
| |
| /* Initialize the local fields. */ |
| if (ret) |
| ret->arg_bits = 0; |
| |
| return (struct bfd_hash_entry *) ret; |
| } |
| |
| /* Create the derived linker hash table. The PA ELF port uses the derived |
| hash table to keep information specific to the PA ELF linker (without |
| using static variables). */ |
| |
| static struct bfd_link_hash_table * |
| elf32_hppa_link_hash_table_create (abfd) |
| bfd *abfd; |
| { |
| struct elf32_hppa_link_hash_table *ret; |
| |
| ret = ((struct elf32_hppa_link_hash_table *) |
| bfd_alloc (abfd, sizeof (struct elf32_hppa_link_hash_table))); |
| if (ret == NULL) |
| return NULL; |
| if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| _bfd_elf_link_hash_newfunc)) |
| { |
| bfd_release (abfd, ret); |
| return NULL; |
| } |
| ret->stub_hash_table = NULL; |
| ret->args_hash_table = NULL; |
| ret->output_symbol_count = 0; |
| ret->global_value = 0; |
| ret->global_sym_defined = 0; |
| |
| return &ret->root.root; |
| } |
| |
| /* 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; |
| { |
| unsigned char opcode = get_opcode (insn); |
| long constant_value; |
| |
| 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: |
| /* 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); |
| |
| return hppa_rebuild_insn (abfd, insn, sym_value >> 2, r_format); |
| |
| default: |
| if (opcode == 0) |
| { |
| constant_value = HPPA_R_CONSTANT (r_addend); |
| |
| if (pcrel) |
| sym_value -= address; |
| |
| return hppa_field_adjust (sym_value, constant_value, r_field); |
| } |
| else |
| abort (); |
| } |
| } |
| |
| /* Relocate an HPPA ELF section. */ |
| |
| static boolean |
| elf32_hppa_relocate_section (output_bfd, info, input_bfd, input_section, |
| contents, relocs, local_syms, local_sections) |
| bfd *output_bfd; |
| struct bfd_link_info *info; |
| bfd *input_bfd; |
| asection *input_section; |
| bfd_byte *contents; |
| Elf_Internal_Rela *relocs; |
| Elf_Internal_Sym *local_syms; |
| asection **local_sections; |
| { |
| Elf_Internal_Shdr *symtab_hdr; |
| Elf_Internal_Rela *rel; |
| Elf_Internal_Rela *relend; |
| |
| symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| |
| rel = relocs; |
| relend = relocs + input_section->reloc_count; |
| for (; rel < relend; rel++) |
| { |
| int r_type; |
| reloc_howto_type *howto; |
| unsigned long r_symndx; |
| struct elf_link_hash_entry *h; |
| Elf_Internal_Sym *sym; |
| asection *sym_sec; |
| bfd_vma relocation; |
| bfd_reloc_status_type r; |
| const char *sym_name; |
| |
| r_type = ELF32_R_TYPE (rel->r_info); |
| if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) |
| { |
| bfd_set_error (bfd_error_bad_value); |
| return false; |
| } |
| howto = elf_hppa_howto_table + r_type; |
| |
| 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) |
| { |
| sym = local_syms + r_symndx; |
| sym_sec = local_sections[r_symndx]; |
| relocation = ((ELF_ST_TYPE (sym->st_info) == STT_SECTION |
| ? 0 : sym->st_value) |
| + sym_sec->output_offset |
| + sym_sec->output_section->vma); |
| } |
| else |
| { |
| long indx; |
| |
| indx = r_symndx - symtab_hdr->sh_info; |
| h = elf_sym_hashes (input_bfd)[indx]; |
| while (h->root.type == bfd_link_hash_indirect |
| || h->root.type == bfd_link_hash_warning) |
| h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| if (h->root.type == bfd_link_hash_defined |
| || h->root.type == bfd_link_hash_defweak) |
| { |
| sym_sec = h->root.u.def.section; |
| relocation = (h->root.u.def.value |
| + sym_sec->output_offset |
| + sym_sec->output_section->vma); |
| } |
| else if (h->root.type == bfd_link_hash_undefweak) |
| relocation = 0; |
| else |
| { |
| if (!((*info->callbacks->undefined_symbol) |
| (info, h->root.root.string, input_bfd, |
| input_section, rel->r_offset))) |
| return false; |
| break; |
| } |
| } |
| |
| if (h != NULL) |
| sym_name = h->root.root.string; |
| else |
| { |
| sym_name = bfd_elf_string_from_elf_section (input_bfd, |
| symtab_hdr->sh_link, |
| sym->st_name); |
| if (sym_name == NULL) |
| return false; |
| if (*sym_name == '\0') |
| sym_name = bfd_section_name (input_bfd, sym_sec); |
| } |
| |
| /* If args_hash_table is NULL, then we have encountered some |
| kind of link error (ex. undefined symbols). Do not try to |
| apply any relocations, continue the loop so we can notify |
| the user of several errors in a single attempted link. */ |
| if (elf32_hppa_hash_table (info)->args_hash_table == NULL) |
| continue; |
| |
| r = elf32_hppa_bfd_final_link_relocate (howto, input_bfd, output_bfd, |
| input_section, contents, |
| rel->r_offset, relocation, |
| rel->r_addend, info, sym_sec, |
| sym_name, h == NULL); |
| |
| if (r != bfd_reloc_ok) |
| { |
| switch (r) |
| { |
| /* This can happen for DP relative relocs if $global$ is |
| undefined. This is a panic situation so we don't try |
| to continue. */ |
| case bfd_reloc_undefined: |
| case bfd_reloc_notsupported: |
| if (!((*info->callbacks->undefined_symbol) |
| (info, "$global$", input_bfd, |
| input_section, rel->r_offset))) |
| return false; |
| return false; |
| case bfd_reloc_dangerous: |
| { |
| /* We use this return value to indicate that we performed |
| a "dangerous" relocation. This doesn't mean we did |
| the wrong thing, it just means there may be some cleanup |
| that needs to be done here. |
| |
| In particular we had to swap the last call insn and its |
| delay slot. If the delay slot insn needed a relocation, |
| then we'll need to adjust the next relocation entry's |
| offset to account for the fact that the insn moved. |
| |
| This hair wouldn't be necessary if we inserted stubs |
| between procedures and used a "bl" to get to the stub. */ |
| if (rel != relend) |
| { |
| Elf_Internal_Rela *next_rel = rel + 1; |
| |
| if (rel->r_offset + 4 == next_rel->r_offset) |
| next_rel->r_offset -= 4; |
| } |
| break; |
| } |
| default: |
| case bfd_reloc_outofrange: |
| case bfd_reloc_overflow: |
| { |
| if (!((*info->callbacks->reloc_overflow) |
| (info, sym_name, howto->name, (bfd_vma) 0, |
| input_bfd, input_section, rel->r_offset))) |
| return false; |
| } |
| break; |
| } |
| } |
| } |
| |
| return true; |
| } |
| |
| /* Return one (or more) BFD relocations which implement the base |
| relocation with modifications based on format and field. */ |
| |
| elf32_hppa_reloc_type ** |
| hppa_elf_gen_reloc_type (abfd, base_type, format, field, ignore, sym) |
| bfd *abfd; |
| elf32_hppa_reloc_type base_type; |
| int format; |
| int field; |
| int ignore; |
| asymbol *sym; |
| { |
| elf32_hppa_reloc_type *finaltype; |
| elf32_hppa_reloc_type **final_types; |
| |
| /* Allocate slots for the BFD relocation. */ |
| final_types = ((elf32_hppa_reloc_type **) |
| bfd_alloc (abfd, sizeof (elf32_hppa_reloc_type *) * 2)); |
| if (final_types == NULL) |
| return NULL; |
| |
| /* Allocate space for the relocation itself. */ |
| finaltype = ((elf32_hppa_reloc_type *) |
| bfd_alloc (abfd, sizeof (elf32_hppa_reloc_type))); |
| if (finaltype == NULL) |
| return NULL; |
| |
| /* Some reasonable defaults. */ |
| final_types[0] = finaltype; |
| final_types[1] = NULL; |
| |
| #define final_type finaltype[0] |
| |
| final_type = base_type; |
| |
| /* 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) |
| { |
| case R_HPPA: |
| case R_HPPA_ABS_CALL: |
| switch (format) |
| { |
| case 14: |
| switch (field) |
| { |
| case e_rsel: |
| case e_rrsel: |
| final_type = R_PARISC_DIR14R; |
| break; |
| case e_rtsel: |
| final_type = R_PARISC_DLTREL14R; |
| break; |
| case e_tsel: |
| final_type = R_PARISC_DLTREL14F; |
| break; |
| case e_rpsel: |
| final_type = R_PARISC_PLABEL14R; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| |
| case 17: |
| switch (field) |
| { |
| case e_fsel: |
| final_type = R_PARISC_DIR17F; |
| break; |
| case e_rsel: |
| case e_rrsel: |
| final_type = R_PARISC_DIR17R; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| |
| case 21: |
| switch (field) |
| { |
| case e_lsel: |
| case e_lrsel: |
| final_type = R_PARISC_DIR21L; |
| break; |
| case e_ltsel: |
| final_type = R_PARISC_DLTREL21L; |
| break; |
| case e_lpsel: |
| final_type = R_PARISC_PLABEL21L; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| |
| case 32: |
| switch (field) |
| { |
| case e_fsel: |
| final_type = R_PARISC_DIR32; |
| break; |
| case e_psel: |
| final_type = R_PARISC_PLABEL32; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| |
| default: |
| return NULL; |
| } |
| break; |
| |
| |
| case R_HPPA_GOTOFF: |
| switch (format) |
| { |
| case 14: |
| switch (field) |
| { |
| case e_rsel: |
| case e_rrsel: |
| final_type = R_PARISC_DPREL14R; |
| break; |
| case e_fsel: |
| final_type = R_PARISC_DPREL14F; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| |
| case 21: |
| switch (field) |
| { |
| case e_lrsel: |
| case e_lsel: |
| final_type = R_PARISC_DPREL21L; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| |
| default: |
| return NULL; |
| } |
| break; |
| |
| |
| case R_HPPA_PCREL_CALL: |
| switch (format) |
| { |
| case 14: |
| switch (field) |
| { |
| case e_rsel: |
| case e_rrsel: |
| final_type = R_PARISC_PCREL14R; |
| break; |
| case e_fsel: |
| final_type = R_PARISC_PCREL14F; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| |
| case 17: |
| switch (field) |
| { |
| case e_rsel: |
| case e_rrsel: |
| final_type = R_PARISC_PCREL17R; |
| break; |
| case e_fsel: |
| final_type = R_PARISC_PCREL17F; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| |
| case 21: |
| switch (field) |
| { |
| case e_lsel: |
| case e_lrsel: |
| final_type = R_PARISC_PCREL21L; |
| break; |
| default: |
| return NULL; |
| } |
| break; |
| |
| default: |
| return NULL; |
| } |
| break; |
| |
| default: |
| return NULL; |
| } |
| |
| return final_types; |
| } |
| |
| #undef final_type |
| |
| /* Set the contents of a particular section at a particular location. */ |
| |
| static boolean |
| elf32_hppa_set_section_contents (abfd, section, location, offset, count) |
| bfd *abfd; |
| sec_ptr section; |
| PTR location; |
| file_ptr offset; |
| bfd_size_type count; |
| { |
| /* Ignore write requests for the symbol extension section until we've |
| had the chance to rebuild it ourselves. */ |
| if (!strcmp (section->name, ".PARISC.symextn") && !symext_chain_size) |
| return true; |
| else |
| return _bfd_elf_set_section_contents (abfd, section, location, |
| offset, count); |
| } |
| |
| /* Translate from an elf into field into a howto relocation pointer. */ |
| |
| static void |
| elf32_hppa_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_PARISC_UNIMPLEMENTED); |
| cache_ptr->howto = &elf_hppa_howto_table[ELF32_R_TYPE (dst->r_info)]; |
| } |
| |
| |
| /* Actually perform a relocation. NOTE this is (mostly) superceeded |
| by elf32_hppa_bfd_final_link_relocate which is called by the new |
| fast linker. */ |
| |
| static bfd_reloc_status_type |
| hppa_elf_reloc (abfd, reloc_entry, symbol_in, data, input_section, output_bfd, |
| error_message) |
| bfd *abfd; |
| arelent *reloc_entry; |
| asymbol *symbol_in; |
| PTR data; |
| asection *input_section; |
| bfd *output_bfd; |
| char **error_message; |
| { |
| /* It is no longer valid to call hppa_elf_reloc when creating |
| a final executable. */ |
| if (output_bfd) |
| { |
| reloc_entry->address += input_section->output_offset; |
| |
| /* Work around lossage in generic elf code to write relocations. |
| (maps different section symbols into the same symbol index). */ |
| if ((symbol_in->flags & BSF_SECTION_SYM) |
| && symbol_in->section) |
| reloc_entry->addend += symbol_in->section->output_offset; |
| return bfd_reloc_ok; |
| } |
| else |
| { |
| *error_message = (char *) _("Unsupported call to hppa_elf_reloc"); |
| return bfd_reloc_notsupported; |
| } |
| } |
| |
| /* Actually perform a relocation as part of a final link. This can get |
| rather hairy when linker stubs are needed. */ |
| |
| static bfd_reloc_status_type |
| elf32_hppa_bfd_final_link_relocate (howto, input_bfd, output_bfd, |
| input_section, contents, offset, value, |
| addend, info, sym_sec, sym_name, is_local) |
| reloc_howto_type *howto; |
| bfd *input_bfd; |
| bfd *output_bfd; |
| asection *input_section; |
| bfd_byte *contents; |
| bfd_vma offset; |
| bfd_vma value; |
| bfd_vma addend; |
| struct bfd_link_info *info; |
| asection *sym_sec; |
| const char *sym_name; |
| int is_local; |
| { |
| unsigned long insn; |
| unsigned long r_type = howto->type; |
| unsigned long r_format = howto->bitsize; |
| unsigned long r_field = e_fsel; |
| bfd_byte *hit_data = contents + offset; |
| boolean r_pcrel = howto->pc_relative; |
| |
| insn = bfd_get_32 (input_bfd, hit_data); |
| |
| /* Make sure we have a value for $global$. FIXME isn't this effectively |
| just like the gp pointer on MIPS? Can we use those routines for this |
| purpose? */ |
| if (!elf32_hppa_hash_table (info)->global_sym_defined) |
| { |
| struct elf_link_hash_entry *h; |
| asection *sec; |
| |
| h = elf_link_hash_lookup (elf_hash_table (info), "$global$", false, |
| false, false); |
| |
| /* If there isn't a $global$, then we're in deep trouble. */ |
| if (h == NULL) |
| return bfd_reloc_notsupported; |
| |
| /* If $global$ isn't a defined symbol, then we're still in deep |
| trouble. */ |
| if (h->root.type != bfd_link_hash_defined) |
| return bfd_reloc_undefined; |
| |
| sec = h->root.u.def.section; |
| elf32_hppa_hash_table (info)->global_value = (h->root.u.def.value |
| + sec->output_section->vma |
| + sec->output_offset); |
| elf32_hppa_hash_table (info)->global_sym_defined = 1; |
| } |
| |
| switch (r_type) |
| { |
| case R_PARISC_NONE: |
| break; |
| |
| case R_PARISC_DIR32: |
| case R_PARISC_DIR17F: |
| case R_PARISC_PCREL17C: |
| r_field = e_fsel; |
| goto do_basic_type_1; |
| case R_PARISC_DIR21L: |
| case R_PARISC_PCREL21L: |
| r_field = e_lrsel; |
| goto do_basic_type_1; |
| case R_PARISC_DIR17R: |
| case R_PARISC_PCREL17R: |
| case R_PARISC_DIR14R: |
| case R_PARISC_PCREL14R: |
| r_field = e_rrsel; |
| goto do_basic_type_1; |
| |
| /* For all the DP relative relocations, we need to examine the symbol's |
| section. If it's a code section, then "data pointer relative" makes |
| no sense. In that case we don't adjust the "value", and for 21 bit |
| addil instructions, we change the source addend register from %dp to |
| %r0. */ |
| case R_PARISC_DPREL21L: |
| r_field = e_lrsel; |
| if (sym_sec->flags & SEC_CODE) |
| { |
| if ((insn & 0xfc000000) >> 26 == 0xa |
| && (insn & 0x03e00000) >> 21 == 0x1b) |
| insn &= ~0x03e00000; |
| } |
| else |
| value -= elf32_hppa_hash_table (info)->global_value; |
| goto do_basic_type_1; |
| case R_PARISC_DPREL14R: |
| r_field = e_rrsel; |
| if ((sym_sec->flags & SEC_CODE) == 0) |
| value -= elf32_hppa_hash_table (info)->global_value; |
| goto do_basic_type_1; |
| case R_PARISC_DPREL14F: |
| r_field = e_fsel; |
| if ((sym_sec->flags & SEC_CODE) == 0) |
| value -= elf32_hppa_hash_table (info)->global_value; |
| goto do_basic_type_1; |
| |
| /* These cases are separate as they may involve a lot more work |
| to deal with linker stubs. */ |
| case R_PARISC_PLABEL32: |
| case R_PARISC_PLABEL21L: |
| case R_PARISC_PLABEL14R: |
| case R_PARISC_PCREL17F: |
| { |
| bfd_vma location; |
| unsigned int len, caller_args, callee_args; |
| arg_reloc_type arg_reloc_types[5]; |
| struct elf32_hppa_args_hash_table *args_hash_table; |
| struct elf32_hppa_args_hash_entry *args_hash; |
| char *new_name, *stub_name; |
| |
| /* Get the field selector right. We'll need it in a minute. */ |
| if (r_type == R_PARISC_PCREL17F |
| || r_type == R_PARISC_PLABEL32) |
| r_field = e_fsel; |
| else if (r_type == R_PARISC_PLABEL21L) |
| r_field = e_lrsel; |
| else if (r_type == R_PARISC_PLABEL14R) |
| r_field = e_rrsel; |
| |
| /* Find out where we are and where we're going. */ |
| location = (offset + |
| input_section->output_offset + |
| input_section->output_section->vma); |
| |
| /* Now look for the argument relocation bits associated with the |
| target. */ |
| len = strlen (sym_name) + 1; |
| if (is_local) |
| len += 9; |
| new_name = bfd_malloc (len); |
| if (!new_name) |
| return bfd_reloc_notsupported; |
| strcpy (new_name, sym_name); |
| |
| /* Local symbols have unique IDs. */ |
| if (is_local) |
| sprintf (new_name + len - 10, "_%08x", (int)sym_sec); |
| |
| args_hash_table = elf32_hppa_hash_table (info)->args_hash_table; |
| |
| args_hash = elf32_hppa_args_hash_lookup (args_hash_table, |
| new_name, false, false); |
| if (args_hash == NULL) |
| callee_args = 0; |
| else |
| callee_args = args_hash->arg_bits; |
| |
| /* If this is a CALL relocation, then get the caller's bits |
| from the addend. Else use the magic 0x155 value for PLABELS. |
| |
| Also we don't care about the destination (value) for PLABELS. */ |
| if (r_type == R_PARISC_PCREL17F) |
| caller_args = HPPA_R_ARG_RELOC (addend); |
| else |
| { |
| caller_args = 0x155; |
| location = value; |
| } |
| |
| /* Any kind of linker stub needed? */ |
| if (((int)(value - location) > 0x3ffff) |
| || ((int)(value - location) < (int)0xfffc0000) |
| || elf32_hppa_arg_reloc_needed (caller_args, callee_args, |
| arg_reloc_types)) |
| { |
| struct elf32_hppa_stub_hash_table *stub_hash_table; |
| struct elf32_hppa_stub_hash_entry *stub_hash; |
| asection *stub_section; |
| |
| /* Build a name for the stub. */ |
| |
| len = strlen (new_name); |
| len += 23; |
| stub_name = bfd_malloc (len); |
| if (!stub_name) |
| return bfd_reloc_notsupported; |
| elf32_hppa_name_of_stub (caller_args, callee_args, |
| location, value, stub_name); |
| strcat (stub_name, new_name); |
| free (new_name); |
| |
| stub_hash_table = elf32_hppa_hash_table (info)->stub_hash_table; |
| |
| stub_hash |
| = elf32_hppa_stub_hash_lookup (stub_hash_table, stub_name, |
| false, false); |
| |
| /* We're done with that name. */ |
| free (stub_name); |
| |
| /* The stub BFD only has one section. */ |
| stub_section = stub_hash_table->stub_bfd->sections; |
| |
| if (stub_hash != NULL) |
| { |
| |
| if (r_type == R_PARISC_PCREL17F) |
| { |
| unsigned long delay_insn; |
| unsigned int opcode, rtn_reg, ldo_target_reg, ldo_src_reg; |
| |
| /* We'll need to peek at the next insn. */ |
| delay_insn = bfd_get_32 (input_bfd, hit_data + 4); |
| opcode = get_opcode (delay_insn); |
| |
| /* We also need to know the return register for this |
| call. */ |
| rtn_reg = (insn & 0x03e00000) >> 21; |
| |
| ldo_src_reg = (delay_insn & 0x03e00000) >> 21; |
| ldo_target_reg = (delay_insn & 0x001f0000) >> 16; |
| |
| /* Munge up the value and other parameters for |
| hppa_elf_relocate_insn. */ |
| |
| value = (stub_hash->offset |
| + stub_section->output_offset |
| + stub_section->output_section->vma); |
| |
| r_format = 17; |
| r_field = e_fsel; |
| r_pcrel = 0; |
| addend = 0; |
| |
| /* We need to peek at the delay insn and determine if |
| we'll need to swap the branch and its delay insn. */ |
| if ((insn & 2) |
| || (opcode == LDO |
| && ldo_target_reg == rtn_reg) |
| || (delay_insn == 0x08000240)) |
| { |
| /* No need to swap the branch and its delay slot, but |
| we do need to make sure to jump past the return |
| pointer update in the stub. */ |
| value += 4; |
| |
| /* If the delay insn does a return pointer adjustment, |
| then we have to make sure it stays valid. */ |
| if (opcode == LDO |
| && ldo_target_reg == rtn_reg) |
| { |
| delay_insn &= 0xfc00ffff; |
| delay_insn |= ((31 << 21) | (31 << 16)); |
| bfd_put_32 (input_bfd, delay_insn, hit_data + 4); |
| } |
| /* Use a BLE to reach the stub. */ |
| insn = BLE_SR4_R0; |
| } |
| else |
| { |
| /* Wonderful, we have to swap the call insn and its |
| delay slot. */ |
| bfd_put_32 (input_bfd, delay_insn, hit_data); |
| /* Use a BLE,n to reach the stub. */ |
| insn = (BLE_SR4_R0 | 0x2); |
| bfd_put_32 (input_bfd, insn, hit_data + 4); |
| insn = hppa_elf_relocate_insn (input_bfd, |
| input_section, |
| insn, offset + 4, |
| value, addend, |
| r_format, r_field, |
| r_pcrel); |
| /* Update the instruction word. */ |
| bfd_put_32 (input_bfd, insn, hit_data + 4); |
| return bfd_reloc_dangerous; |
| } |
| } |
| else |
| { |
| /* PLABEL stuff is easy. */ |
| |
| value = (stub_hash->offset |
| + stub_section->output_offset |
| + stub_section->output_section->vma); |
| /* We don't need the RP adjustment for PLABELs. */ |
| value += 4; |
| if (r_type == R_PARISC_PLABEL32) |
| r_format = 32; |
| else if (r_type == R_PARISC_PLABEL21L) |
| r_format = 21; |
| else if (r_type == R_PARISC_PLABEL14R) |
| r_format = 14; |
| |
| r_pcrel = 0; |
| addend = 0; |
| } |
| } |
| else |
| return bfd_reloc_notsupported; |
| } |
| goto do_basic_type_1; |
| } |
| |
| do_basic_type_1: |
| insn = hppa_elf_relocate_insn (input_bfd, input_section, insn, |
| offset, value, addend, r_format, |
| r_field, r_pcrel); |
| break; |
| |
| /* Something we don't know how to handle. */ |
| default: |
| return bfd_reloc_notsupported; |
| } |
| |
| /* Update the instruction word. */ |
| bfd_put_32 (input_bfd, insn, hit_data); |
| return (bfd_reloc_ok); |
| } |
| |
| /* Return the address of the howto table entry to perform the CODE |
| relocation for an ARCH machine. */ |
| |
| static reloc_howto_type * |
| elf_hppa_reloc_type_lookup (abfd, code) |
| bfd *abfd; |
| bfd_reloc_code_real_type code; |
| { |
| if ((int) code < (int) R_PARISC_UNIMPLEMENTED) |
| { |
| BFD_ASSERT ((int) elf_hppa_howto_table[(int) code].type == (int) code); |
| return &elf_hppa_howto_table[(int) code]; |
| } |
| return NULL; |
| } |
| |
| /* Return true if SYM represents a local label symbol. */ |
| |
| static boolean |
| hppa_elf_is_local_label_name (abfd, name) |
| bfd *abfd; |
| const char *name; |
| { |
| return (name[0] == 'L' && name[1] == '$'); |
| } |
| |
| /* Do any backend specific processing when beginning to write an object |
| file. For PA ELF we need to determine the size of the symbol extension |
| section *before* any other output processing happens. */ |
| |
| static void |
| elf32_hppa_backend_begin_write_processing (abfd, info) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| { |
| unsigned int i; |
| asection *symextn_sec; |
| |
| /* Size up the symbol extension section. */ |
| if ((abfd->outsymbols == NULL |
| && info == NULL) |
| || symext_chain_size != 0) |
| return; |
| |
| if (info == NULL) |
| { |
| /* We were not called from the BFD ELF linker code, so we need |
| to examine the output BFD's outsymbols. |
| |
| Note we can not build the symbol extensions now as the symbol |
| map hasn't been set up. */ |
| for (i = 0; i < abfd->symcount; i++) |
| { |
| elf_symbol_type *symbol = (elf_symbol_type *)abfd->outsymbols[i]; |
| |
| /* Only functions ever need an entry in the symbol extension |
| section. */ |
| if (!(symbol->symbol.flags & BSF_FUNCTION)) |
| continue; |
| |
| /* And only if they specify the locations of their arguments. */ |
| if (symbol->tc_data.hppa_arg_reloc == 0) |
| continue; |
| |
| /* Yup. This function symbol needs an entry. */ |
| symext_chain_size += 2 * ELF32_PARISC_SX_SIZE; |
| } |
| } |
| else if (info->relocateable == true) |
| { |
| struct elf32_hppa_args_hash_table *table; |
| table = elf32_hppa_hash_table (info)->args_hash_table; |
| |
| /* Determine the size of the symbol extension section. */ |
| elf32_hppa_args_hash_traverse (table, |
| elf32_hppa_size_symext, |
| &symext_chain_size); |
| } |
| |
| /* Now create the section and set its size. We'll fill in the |
| contents later. */ |
| symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME); |
| if (symextn_sec == NULL) |
| symextn_sec = bfd_make_section (abfd, SYMEXTN_SECTION_NAME); |
| |
| bfd_set_section_flags (abfd, symextn_sec, |
| SEC_LOAD | SEC_HAS_CONTENTS | SEC_DATA); |
| symextn_sec->output_section = symextn_sec; |
| symextn_sec->output_offset = 0; |
| bfd_set_section_alignment (abfd, symextn_sec, 2); |
| bfd_set_section_size (abfd, symextn_sec, symext_chain_size); |
| } |
| |
| /* Called for each entry in the args location hash table. For each |
| entry we bump the size pointer by 2 records (16 bytes). */ |
| |
| static boolean |
| elf32_hppa_size_symext (gen_entry, in_args) |
| struct bfd_hash_entry *gen_entry; |
| PTR in_args; |
| { |
| bfd_size_type *sizep = (bfd_size_type *)in_args; |
| |
| *sizep += 2 * ELF32_PARISC_SX_SIZE; |
| return true; |
| } |
| |
| /* Backend routine called by the linker for each output symbol. |
| |
| For PA ELF we use this opportunity to add an appropriate entry |
| to the symbol extension chain for function symbols. */ |
| |
| static boolean |
| elf32_hppa_link_output_symbol_hook (abfd, info, name, sym, section) |
| bfd *abfd; |
| struct bfd_link_info *info; |
| const char *name; |
| Elf_Internal_Sym *sym; |
| asection *section; |
| { |
| char *new_name; |
| unsigned int len, index; |
| struct elf32_hppa_args_hash_table *args_hash_table; |
| struct elf32_hppa_args_hash_entry *args_hash; |
| |
| /* If the args hash table is NULL, then we've encountered an error |
| of some sorts (for example, an undefined symbol). In that case |
| we've got nothing else to do. |
| |
| NOTE: elf_link_output_symbol will abort if we return false here! */ |
| if (elf32_hppa_hash_table (info)->args_hash_table == NULL) |
| return true; |
| |
| index = elf32_hppa_hash_table (info)->output_symbol_count++; |
| |
| /* We need to look up this symbol in the args hash table to see if |
| it has argument relocation bits. */ |
| if (ELF_ST_TYPE (sym->st_info) != STT_FUNC) |
| return true; |
| |
| /* We know it's a function symbol of some kind. */ |
| len = strlen (name) + 1; |
| if (ELF_ST_BIND (sym->st_info) == STB_LOCAL) |
| len += 9; |
| |
| new_name = bfd_malloc (len); |
| if (new_name == NULL) |
| return false; |
| |
| strcpy (new_name, name); |
| if (ELF_ST_BIND (sym->st_info) == STB_LOCAL) |
| sprintf (new_name + len - 10, "_%08x", (int)section); |
| |
| /* Now that we have the unique name, we can look it up in the |
| args hash table. */ |
| args_hash_table = elf32_hppa_hash_table (info)->args_hash_table; |
| args_hash = elf32_hppa_args_hash_lookup (args_hash_table, new_name, |
| false, false); |
| free (new_name); |
| if (args_hash == NULL) |
| return true; |
| |
| /* We know this symbol has arg reloc bits. */ |
| add_entry_to_symext_chain (abfd, args_hash->arg_bits, |
| index, &symext_rootP, &symext_lastP); |
| return true; |
| } |
| |
| /* Perform any processing needed late in the object file writing process. |
| For PA ELF we build and set the contents of the symbol extension |
| section. */ |
| |
| static void |
| elf32_hppa_backend_final_write_processing (abfd, linker) |
| bfd *abfd; |
| boolean linker; |
| { |
| asection *symextn_sec; |
| unsigned int i; |
| |
| /* Now build the symbol extension section. */ |
| if (symext_chain_size == 0) |
| return; |
| |
| if (! linker) |
| { |
| /* We were not called from the backend linker, so we still need |
| to build the symbol extension chain. |
| |
| Look at each symbol, adding the appropriate information to the |
| symbol extension section list as necessary. */ |
| for (i = 0; i < abfd->symcount; i++) |
| { |
| elf_symbol_type *symbol = (elf_symbol_type *) abfd->outsymbols[i]; |
| |
| /* Only functions ever need an entry in the symbol extension |
| section. */ |
| if (!(symbol->symbol.flags & BSF_FUNCTION)) |
| continue; |
| |
| /* And only if they specify the locations of their arguments. */ |
| if (symbol->tc_data.hppa_arg_reloc == 0) |
| continue; |
| |
| /* Add this symbol's information to the chain. */ |
| add_entry_to_symext_chain (abfd, symbol->tc_data.hppa_arg_reloc, |
| symbol->symbol.udata.i, &symext_rootP, |
| &symext_lastP); |
| } |
| } |
| |
| /* Now fill in the contents of the symbol extension section. */ |
| elf_hppa_tc_make_sections (abfd, symext_rootP); |
| |
| /* And attach that as the section's contents. */ |
| symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME); |
| if (symextn_sec == (asection *) 0) |
| abort(); |
| |
| symextn_sec->contents = (void *)symextn_contents; |
| |
| bfd_set_section_contents (abfd, symextn_sec, symextn_sec->contents, |
| symextn_sec->output_offset, symextn_sec->_raw_size); |
| } |
| |
| /* Update the symbol extention chain to include the symbol pointed to |
| by SYMBOLP if SYMBOLP is a function symbol. Used internally and by GAS. */ |
| |
| static void |
| add_entry_to_symext_chain (abfd, arg_reloc, sym_idx, symext_root, symext_last) |
| bfd *abfd; |
| unsigned int arg_reloc; |
| unsigned int sym_idx; |
| symext_chainS **symext_root; |
| symext_chainS **symext_last; |
| { |
| symext_chainS *symextP; |
| |
| /* Allocate memory and initialize this entry. */ |
| symextP = (symext_chainS *) bfd_alloc (abfd, sizeof (symext_chainS) * 2); |
| if (!symextP) |
| abort(); /* FIXME */ |
| |
| symextP[0].entry = ELF32_PARISC_SX_WORD (PARISC_SXT_SYMNDX, sym_idx); |
| symextP[0].next = &symextP[1]; |
| |
| symextP[1].entry = ELF32_PARISC_SX_WORD (PARISC_SXT_ARG_RELOC, arg_reloc); |
| symextP[1].next = NULL; |
| |
| /* 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]; |
| } |
| } |
| |
| /* Build the symbol extension section. */ |
| |
| static void |
| elf_hppa_tc_make_sections (abfd, symext_root) |
| bfd *abfd; |
| symext_chainS *symext_root; |
| { |
| symext_chainS *symextP; |
| unsigned int i; |
| asection *symextn_sec; |
| |
| symextn_sec = bfd_get_section_by_name (abfd, SYMEXTN_SECTION_NAME); |
| |
| /* Grab some memory for the contents of the symbol extension section |
| itself. */ |
| symextn_contents = (bfd_byte *) bfd_zalloc (abfd, |
| symextn_sec->_raw_size); |
| if (!symextn_contents) |
| abort(); /* FIXME */ |
| |
| /* Fill in the contents of the symbol extension chain. */ |
| for (i = 0, symextP = symext_root; symextP; symextP = symextP->next, ++i) |
| ELF32_PARISC_SX_PUT (abfd, (bfd_vma) symextP->entry, |
| symextn_contents + i * ELF32_PARISC_SX_SIZE); |
| |
| return; |
| } |
| |
| /* 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. */ |
| |
| static boolean |
| elf32_hppa_backend_symbol_table_processing (abfd, esyms,symcnt) |
| bfd *abfd; |
| elf_symbol_type *esyms; |
| unsigned int symcnt; |
| { |
| Elf32_Internal_Shdr *symextn_hdr = |
| bfd_elf_find_section (abfd, SYMEXTN_SECTION_NAME); |
| unsigned int i, current_sym_idx = 0; |
| |
| /* 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); |
| } |
| |
| /* FIXME: Why not use bfd_get_section_contents here? Also should give |
| memory back when we're done. */ |
| /* 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) |
| return false; |
| |
| /* Read in the symextn section. */ |
| if (bfd_seek (abfd, symextn_hdr->sh_offset, SEEK_SET) == -1) |
| return false; |
| if (bfd_read ((PTR) symextn_hdr->contents, 1, symextn_hdr->sh_size, abfd) |
| != symextn_hdr->sh_size) |
| return false; |
| |
| /* Parse entries in the symbol extension section, updating the symtab |
| entries as we go */ |
| for (i = 0; i < symextn_hdr->sh_size / ELF32_PARISC_SX_SIZE; i++) |
| { |
| symext_entryS se = |
| ELF32_PARISC_SX_GET (abfd, |
| ((unsigned char *)symextn_hdr->contents |
| + i * ELF32_PARISC_SX_SIZE)); |
| unsigned int se_value = ELF32_PARISC_SX_VAL (se); |
| unsigned int se_type = ELF32_PARISC_SX_TYPE (se); |
| |
| switch (se_type) |
| { |
| case PARISC_SXT_NULL: |
| break; |
| |
| case PARISC_SXT_SYMNDX: |
| if (se_value >= symcnt) |
| { |
| bfd_set_error (bfd_error_bad_value); |
| return (false); |
| } |
| current_sym_idx = se_value - 1; |
| break; |
| |
| case PARISC_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); |
| } |
| |
| /* Read and attach the symbol extension information for the symbols |
| in INPUT_BFD to the argument location hash table. Handle locals |
| if DO_LOCALS is true; likewise for globals when DO_GLOBALS is true. */ |
| |
| static boolean |
| elf32_hppa_read_symext_info (input_bfd, symtab_hdr, args_hash_table, local_syms) |
| bfd *input_bfd; |
| Elf_Internal_Shdr *symtab_hdr; |
| struct elf32_hppa_args_hash_table *args_hash_table; |
| Elf_Internal_Sym *local_syms; |
| { |
| asection *symextn_sec; |
| bfd_byte *contents; |
| unsigned int i, n_entries, current_index = 0; |
| |
| /* Get the symbol extension section for this BFD. If no section exists |
| then there's nothing to do. Likewise if the section exists, but |
| has no contents. */ |
| symextn_sec = bfd_get_section_by_name (input_bfd, SYMEXTN_SECTION_NAME); |
| if (symextn_sec == NULL) |
| return true; |
| |
| /* Done separately so we can turn off SEC_HAS_CONTENTS (see below). */ |
| if (symextn_sec->_raw_size == 0) |
| { |
| symextn_sec->flags &= ~SEC_HAS_CONTENTS; |
| return true; |
| } |
| |
| contents = (bfd_byte *) bfd_malloc ((size_t) symextn_sec->_raw_size); |
| if (contents == NULL) |
| return false; |
| |
| /* How gross. We turn off SEC_HAS_CONTENTS for the input symbol extension |
| sections to keep the generic ELF/BFD code from trying to do anything |
| with them. We have to undo that hack temporarily so that we can read |
| in the contents with the generic code. */ |
| symextn_sec->flags |= SEC_HAS_CONTENTS; |
| if (bfd_get_section_contents (input_bfd, symextn_sec, contents, |
| 0, symextn_sec->_raw_size) == false) |
| { |
| symextn_sec->flags &= ~SEC_HAS_CONTENTS; |
| free (contents); |
| return false; |
| } |
| |
| /* Gross. Turn off SEC_HAS_CONTENTS for the input symbol extension |
| sections (see above). */ |
| symextn_sec->flags &= ~SEC_HAS_CONTENTS; |
| |
| n_entries = symextn_sec->_raw_size / ELF32_PARISC_SX_SIZE; |
| for (i = 0; i < n_entries; i++) |
| { |
| symext_entryS entry = |
| ELF32_PARISC_SX_GET (input_bfd, contents + i * ELF32_PARISC_SX_SIZE); |
| unsigned int value = ELF32_PARISC_SX_VAL (entry); |
| unsigned int type = ELF32_PARISC_SX_TYPE (entry); |
| struct elf32_hppa_args_hash_entry *args_hash; |
| |
| switch (type) |
| { |
| case PARISC_SXT_NULL: |
| break; |
| |
| case PARISC_SXT_SYMNDX: |
| if (value >= symtab_hdr->sh_size / sizeof (Elf32_External_Sym)) |
| { |
| bfd_set_error (bfd_error_bad_value); |
| free (contents); |
| return false; |
| } |
| current_index = value; |
| break; |
| |
| case PARISC_SXT_ARG_RELOC: |
| if (current_index < symtab_hdr->sh_info) |
| { |
| Elf_Internal_Shdr *hdr; |
| char *new_name; |
| const char *sym_name; |
| asection *sym_sec; |
| unsigned int len; |
| |
| hdr = elf_elfsections (input_bfd)[local_syms[current_index].st_shndx]; |
| sym_sec = hdr->bfd_section; |
| sym_name = bfd_elf_string_from_elf_section (input_bfd, |
| symtab_hdr->sh_link, |
| local_syms[current_index].st_name); |
| len = strlen (sym_name) + 10; |
| new_name = bfd_malloc (len); |
| if (new_name == NULL) |
| { |
| free (contents); |
| return false; |
| } |
| strcpy (new_name, sym_name); |
| sprintf (new_name + len - 10, "_%08x", (int)sym_sec); |
| |
| /* This is a global symbol with argument location info. |
| We need to enter it into the hash table. */ |
| args_hash = elf32_hppa_args_hash_lookup (args_hash_table, |
| new_name, true, |
| true); |
| free (new_name); |
| if (args_hash == NULL) |
| { |
| free (contents); |
| return false; |
| } |
| args_hash->arg_bits = value; |
| break; |
| } |
| else if (current_index >= symtab_hdr->sh_info) |
| { |
| struct elf_link_hash_entry *h; |
| |
| current_index -= symtab_hdr->sh_info; |
| h = elf_sym_hashes(input_bfd)[current_index]; |
| /* This is a global symbol with argument location |
| information. We need to enter it into the hash table. */ |
| args_hash = elf32_hppa_args_hash_lookup (args_hash_table, |
| h->root.root.string, |
| true, true); |
| if (args_hash == NULL) |
| { |
| bfd_set_error (bfd_error_bad_value); |
| free (contents); |
| return false; |
| } |
| args_hash->arg_bits = value; |
| break; |
| } |
| else |
| break; |
| |
| default: |
| bfd_set_error (bfd_error_bad_value); |
| free (contents); |
| return false; |
| } |
| } |
| free (contents); |
| 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; |
| struct bfd_link_info *info; |
| const Elf_Internal_Sym *sym; |
| const char **namep; |
| flagword *flagsp; |
| asection **secp; |
| bfd_vma *valp; |
| { |
| *valp += (*secp)->vma; |
| return true; |
| } |
| |
| /* Determine the name of the stub needed to perform a call assuming the |
| argument relocation bits for caller and callee are in CALLER and CALLEE |
| for a call from LOCATION to DESTINATION. Copy the name into STUB_NAME. */ |
| |
| static void |
| elf32_hppa_name_of_stub (caller, callee, location, destination, stub_name) |
| unsigned int caller, callee; |
| bfd_vma location, destination; |
| char *stub_name; |
| { |
| arg_reloc_type arg_reloc_types[5]; |
| |
| if (elf32_hppa_arg_reloc_needed (caller, callee, arg_reloc_types)) |
| { |
| arg_reloc_location i; |
| /* Fill in the basic template. */ |
| strcpy (stub_name, "__XX_XX_XX_XX_XX_stub_"); |
| |
| /* Now fix the specifics. */ |
| for (i = ARG0; i <= RET; i++) |
| switch (arg_reloc_types[i]) |
| { |
| case NO: |
| stub_name[3 * i + 2] = 'N'; |
| stub_name[3 * i + 3] = 'O'; |
| break; |
| case GF: |
| stub_name[3 * i + 2] = 'G'; |
| stub_name[3 * i + 3] = 'F'; |
| break; |
| case FG: |
| stub_name[3 * i + 2] = 'F'; |
| stub_name[3 * i + 3] = 'G'; |
| break; |
| case GD: |
| stub_name[3 * i + 2] = 'G'; |
| stub_name[3 * i + 3] = 'D'; |
| break; |
| case DG: |
| stub_name[3 * i + 2] = 'D'; |
| stub_name[3 * i + 3] = 'G'; |
| break; |
| } |
| } |
| else |
| strcpy (stub_name, "_____long_branch_stub_"); |
| } |
| |
| /* Determine if an argument relocation stub is needed to perform a |
| call assuming the argument relocation bits for caller and callee |
| are in CALLER and CALLEE. Place the type of relocations (if any) |
| into stub_types_p. */ |
| |
| static boolean |
| elf32_hppa_arg_reloc_needed (caller, callee, stub_types) |
| unsigned int caller, callee; |
| arg_reloc_type stub_types[5]; |
| { |
| /* Special case for no relocations. */ |
| if (caller == 0 || callee == 0) |
| return 0; |
| else |
| { |
| arg_location caller_loc[5]; |
| arg_location callee_loc[5]; |
| |
| /* Extract the location information for the argument and return |
| value on both the caller and callee sides. */ |
| caller_loc[ARG0] = EXTRACT_ARBITS (caller, ARG0); |
| callee_loc[ARG0] = EXTRACT_ARBITS (callee, ARG0); |
| caller_loc[ARG1] = EXTRACT_ARBITS (caller, ARG1); |
| callee_loc[ARG1] = EXTRACT_ARBITS (callee, ARG1); |
| caller_loc[ARG2] = EXTRACT_ARBITS (caller, ARG2); |
| callee_loc[ARG2] = EXTRACT_ARBITS (callee, ARG2); |
| caller_loc[ARG3] = EXTRACT_ARBITS (caller, ARG3); |
| callee_loc[ARG3] = EXTRACT_ARBITS (callee, ARG3); |
| caller_loc[RET] = EXTRACT_ARBITS (caller, RET); |
| callee_loc[RET] = EXTRACT_ARBITS (callee, RET); |
| |
| /* Check some special combinations. This is necessary to |
| deal with double precision FP arguments. */ |
| if (caller_loc[ARG0] == AR_FU || caller_loc[ARG1] == AR_FU) |
| { |
| caller_loc[ARG0] = AR_FPDBL1; |
| caller_loc[ARG1] = AR_NO; |
| } |
| if (caller_loc[ARG2] == AR_FU || caller_loc[ARG3] == AR_FU) |
| { |
| caller_loc[ARG2] = AR_FPDBL2; |
| caller_loc[ARG3] = AR_NO; |
| } |
| if (callee_loc[ARG0] == AR_FU || callee_loc[ARG1] == AR_FU) |
| { |
| callee_loc[ARG0] = AR_FPDBL1; |
| callee_loc[ARG1] = AR_NO; |
| } |
| if (callee_loc[ARG2] == AR_FU || callee_loc[ARG3] == AR_FU) |
| { |
| callee_loc[ARG2] = AR_FPDBL2; |
| callee_loc[ARG3] = AR_NO; |
| } |
| |
| /* Now look up any relocation needed for each argument and the |
| return value. */ |
| stub_types[ARG0] = arg_mismatches[caller_loc[ARG0]][callee_loc[ARG0]]; |
| stub_types[ARG1] = arg_mismatches[caller_loc[ARG1]][callee_loc[ARG1]]; |
| stub_types[ARG2] = arg_mismatches[caller_loc[ARG2]][callee_loc[ARG2]]; |
| stub_types[ARG3] = arg_mismatches[caller_loc[ARG3]][callee_loc[ARG3]]; |
| stub_types[RET] = ret_mismatches[caller_loc[RET]][callee_loc[RET]]; |
| |
| return (stub_types[ARG0] != NO |
| || stub_types[ARG1] != NO |
| || stub_types[ARG2] != NO |
| || stub_types[ARG3] != NO |
| || stub_types[RET] != NO); |
| } |
| } |
| |
| /* Compute the size of the stub needed to call from LOCATION to DESTINATION |
| (a function named SYM_NAME), with argument relocation bits CALLER and |
| CALLEE. Return zero if no stub is needed to perform such a call. */ |
| |
| static unsigned int |
| elf32_hppa_size_of_stub (callee, caller, location, destination, sym_name) |
| unsigned int callee, caller; |
| bfd_vma location, destination; |
| const char *sym_name; |
| { |
| arg_reloc_type arg_reloc_types[5]; |
| |
| /* Determine if a long branch or argument relocation stub is needed. |
| If an argument relocation stub is needed, the relocation will be |
| stored into arg_reloc_types. */ |
| if (!(((int)(location - destination) > 0x3ffff) |
| || ((int)(location - destination) < (int)0xfffc0000) |
| || elf32_hppa_arg_reloc_needed (caller, callee, arg_reloc_types))) |
| return 0; |
| |
| /* Some kind of stub is needed. Determine how big it needs to be. |
| First check for argument relocation stubs as they also handle |
| long calls. Then check for long calls to millicode and finally |
| the normal long calls. */ |
| if (arg_reloc_types[ARG0] != NO |
| || arg_reloc_types[ARG1] != NO |
| || arg_reloc_types[ARG2] != NO |
| || arg_reloc_types[ARG3] != NO |
| || arg_reloc_types[RET] != NO) |
| { |
| /* Some kind of argument relocation stub is needed. */ |
| unsigned int len = 16; |
| arg_reloc_location i; |
| |
| /* Each GR or FG relocation takes 2 insns, each GD or DG |
| relocation takes 3 insns. Plus 4 more insns for the |
| RP adjustment, ldil & (be | ble) and copy. */ |
| for (i = ARG0; i <= RET; i++) |
| switch (arg_reloc_types[i]) |
| { |
| case GF: |
| case FG: |
| len += 8; |
| break; |
| |
| case GD: |
| case DG: |
| len += 12; |
| break; |
| |
| default: |
| break; |
| } |
| |
| /* Extra instructions are needed if we're relocating a return value. */ |
| if (arg_reloc_types[RET] != NO) |
| len += 12; |
| |
| return len; |
| } |
| else if (!strncmp ("$$", sym_name, 2) |
| && strcmp ("$$dyncall", sym_name)) |
| return 12; |
| else |
| return 16; |
| } |
| |
| /* Build one linker stub as defined by the stub hash table entry GEN_ENTRY. |
| IN_ARGS contains the stub BFD and link info pointers. */ |
| |
| static boolean |
| elf32_hppa_build_one_stub (gen_entry, in_args) |
| struct bfd_hash_entry *gen_entry; |
| PTR in_args; |
| { |
| void **args = (void **)in_args; |
| bfd *stub_bfd = (bfd *)args[0]; |
| struct bfd_link_info *info = (struct bfd_link_info *)args[1]; |
| struct elf32_hppa_stub_hash_entry *entry; |
| struct elf32_hppa_stub_hash_table *stub_hash_table; |
| bfd_byte *loc; |
| symvalue sym_value; |
| const char *sym_name; |
| |
| /* Initialize pointers to the stub hash table, the particular entry we |
| are building a stub for, and where (in memory) we should place the stub |
| instructions. */ |
| entry = (struct elf32_hppa_stub_hash_entry *)gen_entry; |
| stub_hash_table = elf32_hppa_hash_table(info)->stub_hash_table; |
| loc = stub_hash_table->location; |
| |
| /* Make a note of the offset within the stubs for this entry. */ |
| entry->offset = stub_hash_table->offset; |
| |
| /* The symbol's name starts at offset 22. */ |
| sym_name = entry->root.string + 22; |
| |
| sym_value = (entry->target_value |
| + entry->target_section->output_offset |
| + entry->target_section->output_section->vma); |
| |
| if (strncmp ("_____long_branch_stub_", entry->root.string, 22)) |
| { |
| /* This must be an argument or return value relocation stub. */ |
| unsigned long insn; |
| arg_reloc_location i; |
| bfd_byte *begin_loc = loc; |
| |
| /* First the return pointer adjustment. Depending on exact calling |
| sequence this instruction may be skipped. */ |
| bfd_put_32 (stub_bfd, LDO_M4_R31_R31, loc); |
| loc += 4; |
| |
| /* If we are relocating a return value, then we're going to have |
| to return into the stub. So we have to save off the user's |
| return pointer into the stack at RP'. */ |
| if (strncmp (entry->root.string + 14, "NO", 2)) |
| { |
| bfd_put_32 (stub_bfd, STW_R31_M8R30, loc); |
| loc += 4; |
| } |
| |
| /* Iterate over the argument relocations, emitting instructions |
| to move them around as necessary. */ |
| for (i = ARG0; i <= ARG3; i++) |
| { |
| if (!strncmp (entry->root.string + 3 * i + 2, "GF", 2)) |
| { |
| bfd_put_32 (stub_bfd, STW_ARG_M16R30 | ((26 - i) << 16), loc); |
| bfd_put_32 (stub_bfd, FLDW_M16R30_FARG | (4 + i), loc + 4); |
| loc += 8; |
| } |
| else if (!strncmp (entry->root.string + 3 * i + 2, "FG", 2)) |
| { |
| bfd_put_32 (stub_bfd, FSTW_FARG_M16R30 | (4 + i), loc); |
| bfd_put_32 (stub_bfd, LDW_M16R30_ARG | ((26 - i) << 16), loc + 4); |
| loc += 8; |
| } |
| else if (!strncmp (entry->root.string + 3 * i + 2, "GD", 2)) |
| { |
| bfd_put_32 (stub_bfd, STW_ARG_M12R30 | ((26 - i) << 16), loc); |
| bfd_put_32 (stub_bfd, STW_ARG_M16R30 | ((25 - i) << 16), loc + 4); |
| bfd_put_32 (stub_bfd, FLDD_M16R30_FARG | (5 + i), loc + 8); |
| loc += 12; |
| } |
| else if (!strncmp (entry->root.string + 3 * i + 2, "DG", 2)) |
| { |
| bfd_put_32 (stub_bfd, FSTD_FARG_M16R30 | (5 + i), loc); |
| bfd_put_32 (stub_bfd, LDW_M12R30_ARG | ((26 - i) << 16), loc + 4); |
| bfd_put_32 (stub_bfd, LDW_M16R30_ARG | ((25 - i) << 16), loc + 8); |
| loc += 12; |
| } |
| } |
| |
| /* Load the high bits of the target address into %r1. */ |
| insn = hppa_rebuild_insn (stub_bfd, LDIL_R1, |
| hppa_field_adjust (sym_value, 0, e_lrsel), 21); |
| bfd_put_32 (stub_bfd, insn, loc); |
| loc += 4; |
| |
| /* If we are relocating a return value, then we're going to have |
| to return into the stub, then perform the return value relocation. */ |
| if (strncmp (entry->root.string + 14, "NO", 2)) |
| { |
| /* To return to the stub we "ble" to the target and copy the return |
| pointer from %r31 into %r2. */ |
| insn = hppa_rebuild_insn (stub_bfd, |
| BLE_SR4_R1, |
| hppa_field_adjust (sym_value, 0, |
| e_rrsel) >> 2, |
| 17); |
| bfd_put_32 (stub_bfd, insn, loc); |
| bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 4); |
| |
| /* Reload the return pointer for our caller from the stack. */ |
| bfd_put_32 (stub_bfd, LDW_M8R30_R31, loc + 8); |
| loc += 12; |
| |
| /* Perform the return value relocation. */ |
| if (!strncmp (entry->root.string + 14, "GF", 2)) |
| { |
| bfd_put_32 (stub_bfd, STW_ARG_M16R30 | (28 << 16), loc); |
| bfd_put_32 (stub_bfd, FLDW_M16R30_FARG | 4, loc + 4); |
| loc += 8; |
| } |
| else if (!strncmp (entry->root.string + 14, "FG", 2)) |
| { |
| bfd_put_32 (stub_bfd, FSTW_FARG_M16R30 | 4, loc); |
| bfd_put_32 (stub_bfd, LDW_M16R30_ARG | (28 << 16), loc + 4); |
| loc += 8; |
| } |
| else if (!strncmp (entry->root.string + 2, "GD", 2)) |
| { |
| bfd_put_32 (stub_bfd, STW_ARG_M12R30 | (28 << 16), loc); |
| bfd_put_32 (stub_bfd, STW_ARG_M16R30 | (29 << 16), loc + 4); |
| bfd_put_32 (stub_bfd, FLDD_M16R30_FARG | 4, loc + 8); |
| loc += 12; |
| } |
| else if (!strncmp (entry->root.string + 2, "DG", 2)) |
| { |
| bfd_put_32 (stub_bfd, FSTD_FARG_M16R30 | 4, loc); |
| bfd_put_32 (stub_bfd, LDW_M12R30_ARG | (28 << 16), loc + 4); |
| bfd_put_32 (stub_bfd, LDW_M16R30_ARG | (29 << 16), loc + 8); |
| loc += 12; |
| } |
| /* Branch back to the user's code now. */ |
| bfd_put_32 (stub_bfd, BV_N_0_R31, loc); |
| loc += 4; |
| } |
| else |
| { |
| /* No return value relocation, so we can simply "be" to the |
| target and copy out return pointer into %r2. */ |
| insn = hppa_rebuild_insn (stub_bfd, BE_SR4_R1, |
| hppa_field_adjust (sym_value, 0, |
| e_rrsel) >> 2, 17); |
| bfd_put_32 (stub_bfd, insn, loc); |
| bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 4); |
| loc += 8; |
| } |
| |
| /* Update the location and offsets. */ |
| stub_hash_table->location += (loc - begin_loc); |
| stub_hash_table->offset += (loc - begin_loc); |
| } |
| else |
| { |
| /* Create one of two variant long branch stubs. One for $$dyncall and |
| normal calls, the other for calls to millicode. */ |
| unsigned long insn; |
| int millicode_call = 0; |
| |
| if (!strncmp ("$$", sym_name, 2) && strcmp ("$$dyncall", sym_name)) |
| millicode_call = 1; |
| |
| /* First the return pointer adjustment. Depending on exact calling |
| sequence this instruction may be skipped. */ |
| bfd_put_32 (stub_bfd, LDO_M4_R31_R31, loc); |
| |
| /* The next two instructions are the long branch itself. A long branch |
| is formed with "ldil" loading the upper bits of the target address |
| into a register, then branching with "be" which adds in the lower bits. |
| Long branches to millicode nullify the delay slot of the "be". */ |
| insn = hppa_rebuild_insn (stub_bfd, LDIL_R1, |
| hppa_field_adjust (sym_value, 0, e_lrsel), 21); |
| bfd_put_32 (stub_bfd, insn, loc + 4); |
| insn = hppa_rebuild_insn (stub_bfd, BE_SR4_R1 | (millicode_call ? 2 : 0), |
| hppa_field_adjust (sym_value, 0, e_rrsel) >> 2, |
| 17); |
| bfd_put_32 (stub_bfd, insn, loc + 8); |
| |
| if (!millicode_call) |
| { |
| /* The sequence to call this stub places the return pointer into %r31, |
| the final target expects the return pointer in %r2, so copy the |
| return pointer into the proper register. */ |
| bfd_put_32 (stub_bfd, COPY_R31_R2, loc + 12); |
| |
| /* Update the location and offsets. */ |
| stub_hash_table->location += 16; |
| stub_hash_table->offset += 16; |
| } |
| else |
| { |
| /* Update the location and offsets. */ |
| stub_hash_table->location += 12; |
| stub_hash_table->offset += 12; |
| } |
| |
| } |
| return true; |
| } |
| |
| /* External entry points for sizing and building linker stubs. */ |
| |
| /* Build all the stubs associated with the current output file. The |
| stubs are kept in a hash table attached to the main linker hash |
| table. This is called via hppaelf_finish in the linker. */ |
| |
| boolean |
| elf32_hppa_build_stubs (stub_bfd, info) |
| bfd *stub_bfd; |
| struct bfd_link_info *info; |
| { |
| /* The stub BFD only has one section. */ |
| asection *stub_sec = stub_bfd->sections; |
| struct elf32_hppa_stub_hash_table *table; |
| unsigned int size; |
| void *args[2]; |
| |
| /* So we can pass both the BFD for the stubs and the link info |
| structure to the routine which actually builds stubs. */ |
| args[0] = stub_bfd; |
| args[1] = info; |
| |
| /* Allocate memory to hold the linker stubs. */ |
| size = bfd_section_size (stub_bfd, stub_sec); |
| stub_sec->contents = (unsigned char *) bfd_zalloc (stub_bfd, size); |
| if (stub_sec->contents == NULL) |
| return false; |
| table = elf32_hppa_hash_table(info)->stub_hash_table; |
| table->location = stub_sec->contents; |
| |
| /* Build the stubs as directed by the stub hash table. */ |
| elf32_hppa_stub_hash_traverse (table, elf32_hppa_build_one_stub, args); |
| |
| return true; |
| } |
| |
| /* Determine and set the size of the stub section for a final link. |
| |
| The basic idea here is to examine all the relocations looking for |
| PC-relative calls to a target that is unreachable with a "bl" |
| instruction or calls where the caller and callee disagree on the |
| location of their arguments or return value. */ |
| |
| boolean |
| elf32_hppa_size_stubs (stub_bfd, output_bfd, link_info) |
| bfd *stub_bfd; |
| bfd *output_bfd; |
| struct bfd_link_info *link_info; |
| { |
| bfd *input_bfd; |
| asection *section, *stub_sec = 0; |
| Elf_Internal_Shdr *symtab_hdr; |
| Elf_Internal_Sym *local_syms, *isym, **all_local_syms; |
| Elf32_External_Sym *ext_syms, *esym; |
| unsigned int i, index, bfd_count = 0; |
| struct elf32_hppa_stub_hash_table *stub_hash_table = 0; |
| struct elf32_hppa_args_hash_table *args_hash_table = 0; |
| |
| /* Create and initialize the stub hash table. */ |
| stub_hash_table = ((struct elf32_hppa_stub_hash_table *) |
| bfd_malloc (sizeof (struct elf32_hppa_stub_hash_table))); |
| if (!stub_hash_table) |
| goto error_return; |
| |
| if (!elf32_hppa_stub_hash_table_init (stub_hash_table, stub_bfd, |
| elf32_hppa_stub_hash_newfunc)) |
| goto error_return; |
| |
| /* Likewise for the argument location hash table. */ |
| args_hash_table = ((struct elf32_hppa_args_hash_table *) |
| bfd_malloc (sizeof (struct elf32_hppa_args_hash_table))); |
| if (!args_hash_table) |
| goto error_return; |
| |
| if (!elf32_hppa_args_hash_table_init (args_hash_table, |
| elf32_hppa_args_hash_newfunc)) |
| goto error_return; |
| |
| /* Attach the hash tables to the main hash table. */ |
| elf32_hppa_hash_table(link_info)->stub_hash_table = stub_hash_table; |
| elf32_hppa_hash_table(link_info)->args_hash_table = args_hash_table; |
| |
| /* Count the number of input BFDs. */ |
| for (input_bfd = link_info->input_bfds; |
| input_bfd != NULL; |
| input_bfd = input_bfd->link_next) |
| bfd_count++; |
| |
| /* We want to read in symbol extension records only once. To do this |
| we need to read in the local symbols in parallel and save them for |
| later use; so hold pointers to the local symbols in an array. */ |
| all_local_syms |
| = (Elf_Internal_Sym **) bfd_malloc (sizeof (Elf_Internal_Sym *) |
| * bfd_count); |
| if (all_local_syms == NULL) |
| goto error_return; |
| memset (all_local_syms, 0, sizeof (Elf_Internal_Sym *) * bfd_count); |
| |
| /* Walk over all the input BFDs adding entries to the args hash table |
| for all the external functions. */ |
| for (input_bfd = link_info->input_bfds, index = 0; |
| input_bfd != NULL; |
| input_bfd = input_bfd->link_next, index++) |
| { |
| /* We'll need the symbol table in a second. */ |
| symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| if (symtab_hdr->sh_info == 0) |
| continue; |
| |
| /* We need an array of the local symbols attached to the input bfd. |
| Unfortunately, we're going to have to read & swap them in. */ |
| local_syms |
| = (Elf_Internal_Sym *) bfd_malloc (symtab_hdr->sh_info |
| * sizeof (Elf_Internal_Sym)); |
| if (local_syms == NULL) |
| { |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| all_local_syms[index] = local_syms; |
| |
| ext_syms |
| = (Elf32_External_Sym *) bfd_malloc (symtab_hdr->sh_info |
| * sizeof (Elf32_External_Sym)); |
| if (ext_syms == NULL) |
| { |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| |
| if (bfd_seek (input_bfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
| || bfd_read (ext_syms, 1, |
| (symtab_hdr->sh_info |
| * sizeof (Elf32_External_Sym)), input_bfd) |
| != (symtab_hdr->sh_info * sizeof (Elf32_External_Sym))) |
| { |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| free (ext_syms); |
| goto error_return; |
| } |
| |
| /* Swap the local symbols in. */ |
| isym = local_syms; |
| esym = ext_syms; |
| for (i = 0; i < symtab_hdr->sh_info; i++, esym++, isym++) |
| bfd_elf32_swap_symbol_in (input_bfd, esym, isym); |
| |
| /* Now we can free the external symbols. */ |
| free (ext_syms); |
| |
| if (elf32_hppa_read_symext_info (input_bfd, symtab_hdr, args_hash_table, |
| local_syms) == false) |
| { |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| } |
| |
| /* Magic as we know the stub bfd only has one section. */ |
| stub_sec = stub_bfd->sections; |
| |
| /* If generating a relocateable output file, then we don't |
| have to examine the relocs. */ |
| if (link_info->relocateable) |
| { |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| return true; |
| } |
| |
| /* Now that we have argument location information for all the global |
| functions we can start looking for stubs. */ |
| for (input_bfd = link_info->input_bfds, index = 0; |
| input_bfd != NULL; |
| input_bfd = input_bfd->link_next, index++) |
| { |
| /* We'll need the symbol table in a second. */ |
| symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| if (symtab_hdr->sh_info == 0) |
| continue; |
| |
| local_syms = all_local_syms[index]; |
| |
| /* 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 to do. */ |
| if ((section->flags & SEC_RELOC) == 0 |
| || section->reloc_count == 0) |
| continue; |
| |
| /* Allocate space for the external relocations. */ |
| external_relocs |
| = ((Elf32_External_Rela *) |
| bfd_malloc (section->reloc_count |
| * sizeof (Elf32_External_Rela))); |
| if (external_relocs == NULL) |
| { |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| |
| /* Likewise for the internal relocations. */ |
| internal_relocs |
| = ((Elf_Internal_Rela *) |
| bfd_malloc (section->reloc_count * sizeof (Elf_Internal_Rela))); |
| if (internal_relocs == NULL) |
| { |
| free (external_relocs); |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| |
| /* Read in the external relocs. */ |
| input_rel_hdr = &elf_section_data (section)->rel_hdr; |
| if (bfd_seek (input_bfd, input_rel_hdr->sh_offset, SEEK_SET) != 0 |
| || bfd_read (external_relocs, 1, input_rel_hdr->sh_size, |
| input_bfd) != input_rel_hdr->sh_size) |
| { |
| free (external_relocs); |
| free (internal_relocs); |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| |
| /* Swap in the relocs. */ |
| erela = external_relocs; |
| erelaend = erela + section->reloc_count; |
| irela = internal_relocs; |
| for (; erela < erelaend; erela++, irela++) |
| bfd_elf32_swap_reloca_in (input_bfd, erela, irela); |
| |
| /* We're done with the external relocs, free them. */ |
| free (external_relocs); |
| |
| /* Now examine each relocation. */ |
| irela = internal_relocs; |
| irelaend = irela + section->reloc_count; |
| for (; irela < irelaend; irela++) |
| { |
| long r_type, callee_args, caller_args, size_of_stub; |
| unsigned long r_index; |
| struct elf_link_hash_entry *hash; |
| struct elf32_hppa_stub_hash_entry *stub_hash; |
| struct elf32_hppa_args_hash_entry *args_hash; |
| Elf_Internal_Sym *sym; |
| asection *sym_sec; |
| const char *sym_name; |
| symvalue sym_value; |
| bfd_vma location, destination; |
| char *new_name = NULL; |
| |
| r_type = ELF32_R_TYPE (irela->r_info); |
| r_index = ELF32_R_SYM (irela->r_info); |
| |
| if (r_type < 0 || r_type >= (int) R_PARISC_UNIMPLEMENTED) |
| { |
| bfd_set_error (bfd_error_bad_value); |
| free (internal_relocs); |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| |
| /* Only look for stubs on call instructions or plabel |
| references. */ |
| if (r_type != R_PARISC_PCREL17F |
| && r_type != R_PARISC_PLABEL32 |
| && r_type != R_PARISC_PLABEL21L |
| && r_type != R_PARISC_PLABEL14R) |
| continue; |
| |
| /* Now determine the call target, its name, value, section |
| and argument relocation bits. */ |
| hash = NULL; |
| sym = NULL; |
| sym_sec = NULL; |
| if (r_index < symtab_hdr->sh_info) |
| { |
| /* It's a local symbol. */ |
| Elf_Internal_Shdr *hdr; |
| |
| sym = local_syms + r_index; |
| hdr = elf_elfsections (input_bfd)[sym->st_shndx]; |
| sym_sec = hdr->bfd_section; |
| sym_name = bfd_elf_string_from_elf_section (input_bfd, |
| symtab_hdr->sh_link, |
| sym->st_name); |
| sym_value = (ELF_ST_TYPE (sym->st_info) == STT_SECTION |
| ? 0 : sym->st_value); |
| destination = (sym_value |
| + sym_sec->output_offset |
| + sym_sec->output_section->vma); |
| |
| /* Tack on an ID so we can uniquely identify this local |
| symbol in the stub or arg info hash tables. */ |
| new_name = bfd_malloc (strlen (sym_name) + 10); |
| if (new_name == 0) |
| { |
| free (internal_relocs); |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| sprintf (new_name, "%s_%08x", sym_name, (int)sym_sec); |
| sym_name = new_name; |
| } |
| else |
| { |
| /* It's an external symbol. */ |
| long index; |
| |
| index = r_index - symtab_hdr->sh_info; |
| hash = elf_sym_hashes (input_bfd)[index]; |
| if (hash->root.type == bfd_link_hash_defined |
| || hash->root.type == bfd_link_hash_defweak) |
| { |
| sym_sec = hash->root.u.def.section; |
| sym_name = hash->root.root.string; |
| sym_value = hash->root.u.def.value; |
| destination = (sym_value |
| + sym_sec->output_offset |
| + sym_sec->output_section->vma); |
| } |
| else |
| { |
| bfd_set_error (bfd_error_bad_value); |
| free (internal_relocs); |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| } |
| |
| args_hash = elf32_hppa_args_hash_lookup (args_hash_table, |
| sym_name, false, false); |
| |
| /* Get both caller and callee argument information. */ |
| if (args_hash == NULL) |
| callee_args = 0; |
| else |
| callee_args = args_hash->arg_bits; |
| |
| /* For calls get the caller's bits from the addend of |
| the call relocation. For PLABELS the caller's bits |
| are assumed to have all args & return values in general |
| registers (0x155). */ |
| if (r_type == R_PARISC_PCREL17F) |
| caller_args = HPPA_R_ARG_RELOC (irela->r_addend); |
| else |
| caller_args = 0x155; |
| |
| /* Now determine where the call point is. */ |
| location = (section->output_offset |
| + section->output_section->vma |
| + irela->r_offset); |
| |
| /* We only care about the destination for PCREL function |
| calls (eg. we don't care for PLABELS). */ |
| if (r_type != R_PARISC_PCREL17F) |
| location = destination; |
| |
| /* Determine what (if any) linker stub is needed and its |
| size (in bytes). */ |
| size_of_stub = elf32_hppa_size_of_stub (callee_args, |
| caller_args, |
| location, |
| destination, |
| sym_name); |
| if (size_of_stub != 0) |
| { |
| char *stub_name; |
| unsigned int len; |
| |
| /* Get the name of this stub. */ |
| len = strlen (sym_name); |
| len += 23; |
| |
| stub_name = bfd_malloc (len); |
| if (!stub_name) |
| { |
| /* Because sym_name was mallocd above for local |
| symbols. */ |
| if (r_index < symtab_hdr->sh_info) |
| free (new_name); |
| |
| free (internal_relocs); |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| elf32_hppa_name_of_stub (caller_args, callee_args, |
| location, destination, stub_name); |
| strcat (stub_name + 22, sym_name); |
| |
| /* Because sym_name was malloced above for local symbols. */ |
| if (r_index < symtab_hdr->sh_info) |
| free (new_name); |
| |
| stub_hash |
| = elf32_hppa_stub_hash_lookup (stub_hash_table, stub_name, |
| false, false); |
| if (stub_hash != NULL) |
| { |
| /* The proper stub has already been created, nothing |
| else to do. */ |
| free (stub_name); |
| } |
| else |
| { |
| bfd_set_section_size (stub_bfd, stub_sec, |
| (bfd_section_size (stub_bfd, |
| stub_sec) |
| + size_of_stub)); |
| |
| /* Enter this entry into the linker stub hash table. */ |
| stub_hash |
| = elf32_hppa_stub_hash_lookup (stub_hash_table, |
| stub_name, true, true); |
| if (stub_hash == NULL) |
| { |
| free (stub_name); |
| free (internal_relocs); |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| goto error_return; |
| } |
| |
| /* We'll need these to determine the address that the |
| stub will branch to. */ |
| stub_hash->target_value = sym_value; |
| stub_hash->target_section = sym_sec; |
| } |
| free (stub_name); |
| } |
| } |
| /* We're done with the internal relocs, free them. */ |
| free (internal_relocs); |
| } |
| } |
| /* We're done with the local symbols, free them. */ |
| for (i = 0; i < bfd_count; i++) |
| if (all_local_syms[i]) |
| free (all_local_syms[i]); |
| free (all_local_syms); |
| return true; |
| |
| error_return: |
| /* Return gracefully, avoiding dangling references to the hash tables. */ |
| if (stub_hash_table) |
| { |
| elf32_hppa_hash_table(link_info)->stub_hash_table = NULL; |
| free (stub_hash_table); |
| } |
| if (args_hash_table) |
| { |
| elf32_hppa_hash_table(link_info)->args_hash_table = NULL; |
| free (args_hash_table); |
| } |
| /* Set the size of the stub section to zero since we're never going |
| to create them. Avoids losing when we try to get its contents |
| too. */ |
| bfd_set_section_size (stub_bfd, stub_sec, 0); |
| return false; |
| } |
| |
| /* Misc BFD support code. */ |
| #define bfd_elf32_bfd_reloc_type_lookup elf_hppa_reloc_type_lookup |
| #define bfd_elf32_bfd_is_local_label_name hppa_elf_is_local_label_name |
| |
| /* Symbol extension stuff. */ |
| #define bfd_elf32_set_section_contents elf32_hppa_set_section_contents |
| #define elf_info_to_howto elf32_hppa_info_to_howto |
| #define elf_backend_symbol_table_processing \ |
| elf32_hppa_backend_symbol_table_processing |
| #define elf_backend_begin_write_processing \ |
| elf32_hppa_backend_begin_write_processing |
| #define elf_backend_final_write_processing \ |
| elf32_hppa_backend_final_write_processing |
| |
| /* Stuff for the BFD linker. */ |
| #define elf_backend_relocate_section elf32_hppa_relocate_section |
| #define elf_backend_add_symbol_hook elf32_hppa_add_symbol_hook |
| #define elf_backend_link_output_symbol_hook \ |
| elf32_hppa_link_output_symbol_hook |
| #define bfd_elf32_bfd_link_hash_table_create \ |
| elf32_hppa_link_hash_table_create |
| |
| #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_PARISC |
| #define ELF_MAXPAGESIZE 0x1000 |
| |
| #include "elf32-target.h" |