--- /dev/null
+/* IQ2000-specific support for 32-bit ELF.
+ Copyright (C) 2003 Free Software Foundation, Inc.
+
+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 "libbfd.h"
+#include "elf-bfd.h"
+#include "elf/iq2000.h"
+
+/* Forward declarations. */
+
+/* Private relocation functions. */
+static bfd_reloc_status_type iq2000_elf_relocate_hi16 PARAMS ((bfd *, Elf_Internal_Rela *, bfd_byte *, bfd_vma));
+static reloc_howto_type * iq2000_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type));
+static void iq2000_info_to_howto_rela PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
+static bfd_boolean iq2000_elf_relocate_section PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
+static bfd_reloc_status_type iq2000_final_link_relocate PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *, Elf_Internal_Rela *, bfd_vma));
+static bfd_boolean iq2000_elf_gc_sweep_hook PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *));
+static asection * iq2000_elf_gc_mark_hook PARAMS ((asection *sec, struct bfd_link_info *, Elf_Internal_Rela *, struct elf_link_hash_entry *, Elf_Internal_Sym *));
+static reloc_howto_type * iq2000_reloc_type_lookup PARAMS ((bfd *, bfd_reloc_code_real_type));
+static int elf32_iq2000_machine PARAMS ((bfd *));
+static bfd_boolean iq2000_elf_object_p PARAMS ((bfd *));
+static bfd_boolean iq2000_elf_set_private_flags PARAMS ((bfd *, flagword));
+static bfd_boolean iq2000_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
+static bfd_boolean iq2000_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
+static bfd_boolean iq2000_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
+static bfd_boolean iq2000_elf_check_relocs PARAMS ((bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *));
+static bfd_reloc_status_type iq2000_elf_howto_hi16_reloc PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+
+\f
+static reloc_howto_type iq2000_elf_howto_table [] =
+{
+ /* This reloc does nothing. */
+
+ HOWTO (R_IQ2000_NONE, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_IQ2000_NONE", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 16 bit absolute relocation. */
+ HOWTO (R_IQ2000_16, /* type */
+ 0, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_IQ2000_16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 32 bit absolute relocation. */
+ HOWTO (R_IQ2000_32, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 31, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_IQ2000_32", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x7fffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 26 bit branch address. */
+ HOWTO (R_IQ2000_26, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 26, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ /* This needs complex overflow
+ detection, because the upper four
+ bits must match the PC. */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_IQ2000_26", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0x03ffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 16 bit PC relative reference. */
+ HOWTO (R_IQ2000_PC16, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_IQ2000_PC16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0xffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
+
+ /* high 16 bits of symbol value. */
+ HOWTO (R_IQ2000_HI16, /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 15, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ iq2000_elf_howto_hi16_reloc, /* special_function */
+ "R_IQ2000_HI16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0x7fff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* Low 16 bits of symbol value. */
+ HOWTO (R_IQ2000_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_IQ2000_LO16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 16-bit jump offset. */
+ HOWTO (R_IQ2000_OFFSET_16, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_IQ2000_OFFSET_16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0xffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* 21-bit jump offset. */
+ HOWTO (R_IQ2000_OFFSET_21, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 21, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_IQ2000_OFFSET_21", /* name */
+ FALSE, /* partial_inplace */
+ 0x000000, /* src_mask */
+ 0x1fffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* unsigned high 16 bits of value. */
+ HOWTO (R_IQ2000_OFFSET_21, /* type */
+ 16, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_IQ2000_UHI16", /* name */
+ FALSE, /* partial_inplace */
+ 0x0000, /* src_mask */
+ 0x7fff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* A 32 bit absolute debug relocation. */
+ HOWTO (R_IQ2000_32_DEBUG, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 32, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_bitfield, /* complain_on_overflow */
+ bfd_elf_generic_reloc, /* special_function */
+ "R_IQ2000_32", /* name */
+ FALSE, /* partial_inplace */
+ 0x00000000, /* src_mask */
+ 0xffffffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+};
+
+/* GNU extension to record C++ vtable hierarchy. */
+static reloc_howto_type iq2000_elf_vtinherit_howto =
+ HOWTO (R_IQ2000_GNU_VTINHERIT, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_IQ2000_GNU_VTINHERIT", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE); /* pcrel_offset */
+
+/* GNU extension to record C++ vtable member usage. */
+static reloc_howto_type iq2000_elf_vtentry_howto =
+ HOWTO (R_IQ2000_GNU_VTENTRY, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 0, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ NULL, /* special_function */
+ "R_IQ2000_GNU_VTENTRY", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0, /* dst_mask */
+ FALSE); /* pcrel_offset */
+
+\f
+/* Map BFD reloc types to IQ2000 ELF reloc types. */
+
+struct iq2000_reloc_map
+{
+ bfd_reloc_code_real_type bfd_reloc_val;
+ unsigned int iq2000_reloc_val;
+};
+
+static const struct iq2000_reloc_map iq2000_reloc_map [] =
+{
+ { BFD_RELOC_NONE, R_IQ2000_NONE },
+ { BFD_RELOC_16, R_IQ2000_16 },
+ { BFD_RELOC_32, R_IQ2000_32 },
+ { BFD_RELOC_MIPS_JMP, R_IQ2000_26 },
+ { BFD_RELOC_16_PCREL_S2, R_IQ2000_PC16 },
+ { BFD_RELOC_HI16, R_IQ2000_HI16 },
+ { BFD_RELOC_LO16, R_IQ2000_LO16 },
+ { BFD_RELOC_IQ2000_OFFSET_16,R_IQ2000_OFFSET_16 },
+ { BFD_RELOC_IQ2000_OFFSET_21,R_IQ2000_OFFSET_21 },
+ { BFD_RELOC_IQ2000_UHI16, R_IQ2000_UHI16 },
+ { BFD_RELOC_VTABLE_INHERIT, R_IQ2000_GNU_VTINHERIT },
+ { BFD_RELOC_VTABLE_ENTRY, R_IQ2000_GNU_VTENTRY },
+};
+
+static bfd_reloc_status_type
+iq2000_elf_howto_hi16_reloc (abfd,
+ reloc_entry,
+ symbol,
+ data,
+ input_section,
+ output_bfd,
+ error_message)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message ATTRIBUTE_UNUSED;
+{
+ bfd_reloc_status_type ret;
+ bfd_vma relocation;
+
+ /* If we're relocating, and this an external symbol, we don't want
+ to change anything. */
+ if (output_bfd != (bfd *) NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && reloc_entry->addend == 0)
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ if (bfd_is_com_section (symbol->section))
+ relocation = 0;
+ else
+ relocation = symbol->value;
+
+ relocation += symbol->section->output_section->vma;
+ relocation += symbol->section->output_offset;
+ relocation += reloc_entry->addend;
+
+ /* if %lo will have sign-extension, compensate by add 0x10000 to hi portion */
+ if (relocation & 0x8000)
+ reloc_entry->addend += 0x10000;
+
+ /* Now do the reloc in the usual way. */
+ ret = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
+ input_section, output_bfd, error_message);
+
+ /* put it back the way it was */
+ if (relocation & 0x8000)
+ reloc_entry->addend -= 0x10000;
+
+ return ret;
+}
+
+static bfd_reloc_status_type
+iq2000_elf_relocate_hi16 (input_bfd, relhi, contents, value)
+ bfd *input_bfd;
+ Elf_Internal_Rela *relhi;
+ bfd_byte *contents;
+ bfd_vma value;
+{
+ bfd_vma insn;
+
+ insn = bfd_get_32 (input_bfd, contents + relhi->r_offset);
+
+ value += relhi->r_addend;
+ value &= 0x7fffffff; /* mask off top-bit which is Harvard mask bit */
+
+ /* if top-bit of %lo value is on, this means that %lo will
+ sign-propagate and so we compensate by adding 1 to %hi value */
+ if (value & 0x8000)
+ value += 0x10000;
+
+ value >>= 16;
+ insn = ((insn & ~0xFFFF) | value);
+
+ bfd_put_32 (input_bfd, insn, contents + relhi->r_offset);
+ return bfd_reloc_ok;
+}
+
+static reloc_howto_type *
+iq2000_reloc_type_lookup (abfd, code)
+ bfd * abfd ATTRIBUTE_UNUSED;
+ bfd_reloc_code_real_type code;
+{
+ /* Note that the iq2000_elf_howto_table is indxed by the R_
+ constants. Thus, the order that the howto records appear in the
+ table *must* match the order of the relocation types defined in
+ include/elf/iq2000.h. */
+
+ switch (code)
+ {
+ case BFD_RELOC_NONE:
+ return &iq2000_elf_howto_table[ (int) R_IQ2000_NONE];
+ case BFD_RELOC_16:
+ return &iq2000_elf_howto_table[ (int) R_IQ2000_16];
+ case BFD_RELOC_32:
+ return &iq2000_elf_howto_table[ (int) R_IQ2000_32];
+ case BFD_RELOC_MIPS_JMP:
+ return &iq2000_elf_howto_table[ (int) R_IQ2000_26];
+ case BFD_RELOC_IQ2000_OFFSET_16:
+ return &iq2000_elf_howto_table[ (int) R_IQ2000_OFFSET_16];
+ case BFD_RELOC_IQ2000_OFFSET_21:
+ return &iq2000_elf_howto_table[ (int) R_IQ2000_OFFSET_21];
+ case BFD_RELOC_16_PCREL_S2:
+ return &iq2000_elf_howto_table[ (int) R_IQ2000_PC16];
+ case BFD_RELOC_HI16:
+ return &iq2000_elf_howto_table[ (int) R_IQ2000_HI16];
+ case BFD_RELOC_IQ2000_UHI16:
+ return &iq2000_elf_howto_table[ (int) R_IQ2000_UHI16];
+ case BFD_RELOC_LO16:
+ return &iq2000_elf_howto_table[ (int) R_IQ2000_LO16];
+ case BFD_RELOC_VTABLE_INHERIT:
+ return &iq2000_elf_vtinherit_howto;
+ case BFD_RELOC_VTABLE_ENTRY:
+ return &iq2000_elf_vtentry_howto;
+ default:
+ /* Pacify gcc -Wall. */
+ return NULL;
+ }
+ return NULL;
+}
+
+\f
+/* Perform a single relocation. By default we use the standard BFD
+ routines. */
+
+static bfd_reloc_status_type
+iq2000_final_link_relocate (howto, input_bfd, input_section, contents, rel, relocation)
+ reloc_howto_type * howto;
+ bfd * input_bfd;
+ asection * input_section;
+ bfd_byte * contents;
+ Elf_Internal_Rela * rel;
+ bfd_vma relocation;
+{
+ return _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, rel->r_addend);
+}
+\f
+/* Set the howto pointer for a IQ2000 ELF reloc. */
+
+static void
+iq2000_info_to_howto_rela (abfd, cache_ptr, dst)
+ bfd * abfd ATTRIBUTE_UNUSED;
+ arelent * cache_ptr;
+ Elf_Internal_Rela * dst;
+{
+ unsigned int r_type;
+
+ r_type = ELF32_R_TYPE (dst->r_info);
+ switch (r_type)
+ {
+ case R_IQ2000_GNU_VTINHERIT:
+ cache_ptr->howto = & iq2000_elf_vtinherit_howto;
+ break;
+
+ case R_IQ2000_GNU_VTENTRY:
+ cache_ptr->howto = & iq2000_elf_vtentry_howto;
+ break;
+
+ default:
+ cache_ptr->howto = & iq2000_elf_howto_table [r_type];
+ break;
+ }
+}
+
+/* Look through the relocs for a section during the first phase.
+ Since we don't do .gots or .plts, we just need to consider the
+ virtual table relocs for gc. */
+
+static bfd_boolean
+iq2000_elf_check_relocs (abfd, info, sec, relocs)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ asection *sec;
+ const Elf_Internal_Rela *relocs;
+{
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes, **sym_hashes_end;
+ Elf_Internal_Rela *rel;
+ Elf_Internal_Rela *rel_end;
+
+ if (info->relocateable)
+ return TRUE;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ sym_hashes_end = sym_hashes + symtab_hdr->sh_size/sizeof(Elf32_External_Sym);
+ if (!elf_bad_symtab (abfd))
+ sym_hashes_end -= symtab_hdr->sh_info;
+
+ rel_end = relocs + sec->reloc_count;
+ for (rel = relocs; rel < rel_end; rel++)
+ {
+ struct elf_link_hash_entry *h;
+ unsigned long r_symndx;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx < symtab_hdr->sh_info)
+ h = NULL;
+ else
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ /* This relocation describes the C++ object vtable hierarchy.
+ Reconstruct it for later use during GC. */
+ case R_IQ2000_GNU_VTINHERIT:
+ if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+ return FALSE;
+ break;
+
+ /* This relocation describes which C++ vtable entries are actually
+ used. Record for later use during GC. */
+ case R_IQ2000_GNU_VTENTRY:
+ if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ return FALSE;
+ break;
+
+ case R_IQ2000_32:
+ /* For debug section, change to special harvard-aware relocations */
+ if (memcmp (sec->name, ".debug", 6) == 0
+ || memcmp (sec->name, ".stab", 5) == 0
+ || memcmp (sec->name, ".eh_frame", 9) == 0)
+ rel->r_info = ELF32_R_INFO (ELF32_R_SYM (rel->r_info), R_IQ2000_32_DEBUG);
+ break;
+ }
+ }
+ return TRUE;
+}
+
+\f
+/* Relocate a IQ2000 ELF section.
+ There is some attempt to make this function usable for many architectures,
+ both USE_REL and USE_RELA ['twould be nice if such a critter existed],
+ if only to serve as a learning tool.
+
+ The RELOCATE_SECTION function is called by the new ELF backend linker
+ to handle the relocations for a section.
+
+ The relocs are always passed as Rela structures; if the section
+ actually uses Rel structures, the r_addend field will always be
+ zero.
+
+ This function is responsible for adjusting the section contents as
+ necessary, and (if using Rela relocs and generating a relocateable
+ output file) adjusting the reloc addend as necessary.
+
+ This function does not have to worry about setting the reloc
+ address or the reloc symbol index.
+
+ LOCAL_SYMS is a pointer to the swapped in local symbols.
+
+ LOCAL_SECTIONS is an array giving the section in the input file
+ corresponding to the st_shndx field of each local symbol.
+
+ The global hash table entry for the global symbols can be found
+ via elf_sym_hashes (input_bfd).
+
+ When generating relocateable output, this function must handle
+ STB_LOCAL/STT_SECTION symbols specially. The output symbol is
+ going to be the section symbol corresponding to the output
+ section, which means that the addend must be adjusted
+ accordingly. */
+
+static bfd_boolean
+iq2000_elf_relocate_section (output_bfd, info, input_bfd, input_section,
+ contents, relocs, local_syms, local_sections)
+ bfd * output_bfd ATTRIBUTE_UNUSED;
+ struct bfd_link_info * info;
+ bfd * input_bfd;
+ asection * input_section;
+ bfd_byte * contents;
+ Elf_Internal_Rela * relocs;
+ Elf_Internal_Sym * local_syms;
+ asection ** local_sections;
+{
+ Elf_Internal_Shdr * symtab_hdr;
+ struct elf_link_hash_entry ** sym_hashes;
+ Elf_Internal_Rela * rel;
+ Elf_Internal_Rela * relend;
+
+ symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (input_bfd);
+ relend = relocs + input_section->reloc_count;
+
+ for (rel = relocs; rel < relend; rel ++)
+ {
+ reloc_howto_type * howto;
+ unsigned long r_symndx;
+ Elf_Internal_Sym * sym;
+ asection * sec;
+ struct elf_link_hash_entry * h;
+ bfd_vma relocation;
+ bfd_reloc_status_type r;
+ const char * name = NULL;
+ int r_type;
+
+ r_type = ELF32_R_TYPE (rel->r_info);
+
+ if ( r_type == R_IQ2000_GNU_VTINHERIT
+ || r_type == R_IQ2000_GNU_VTENTRY)
+ continue;
+
+ r_symndx = ELF32_R_SYM (rel->r_info);
+
+ /* This is a final link. */
+ howto = iq2000_elf_howto_table + ELF32_R_TYPE (rel->r_info);
+ h = NULL;
+ sym = NULL;
+ sec = NULL;
+
+ if (r_symndx < symtab_hdr->sh_info)
+ {
+ sym = local_syms + r_symndx;
+ sec = local_sections [r_symndx];
+ relocation = (sec->output_section->vma
+ + sec->output_offset
+ + sym->st_value);
+
+ name = bfd_elf_string_from_elf_section
+ (input_bfd, symtab_hdr->sh_link, sym->st_name);
+ name = (name == NULL) ? bfd_section_name (input_bfd, sec) : name;
+#ifdef DEBUG
+ fprintf (stderr, "local: sec: %s, sym: %s (%d), value: %x + %x + %x addend %x\n",
+ sec->name, name, sym->st_name,
+ sec->output_section->vma, sec->output_offset,
+ sym->st_value, rel->r_addend);
+#endif
+ }
+ else
+ {
+ h = sym_hashes [r_symndx];
+
+ 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;
+
+ name = h->root.root.string;
+
+ if (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ {
+ sec = h->root.u.def.section;
+ relocation = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+#ifdef DEBUG
+ fprintf (stderr,
+ "defined: sec: %s, name: %s, value: %x + %x + %x gives: %x\n",
+ sec->name, name, h->root.u.def.value,
+ sec->output_section->vma, sec->output_offset, relocation);
+#endif
+ }
+ else if (h->root.type == bfd_link_hash_undefweak)
+ {
+#ifdef DEBUG
+ fprintf (stderr, "undefined: sec: %s, name: %s\n",
+ sec->name, name);
+#endif
+ relocation = 0;
+ }
+ else
+ {
+ if (! ((*info->callbacks->undefined_symbol)
+ (info, h->root.root.string, input_bfd,
+ input_section, rel->r_offset,
+ (!info->shared || info->no_undefined))))
+ return FALSE;
+#ifdef DEBUG
+ fprintf (stderr, "unknown: name: %s\n", name);
+#endif
+ relocation = 0;
+ }
+ }
+
+ switch (r_type)
+ {
+ case R_IQ2000_HI16:
+ r = iq2000_elf_relocate_hi16 (input_bfd, rel, contents, relocation);
+ break;
+
+ case R_IQ2000_PC16:
+ rel->r_addend -= 4;
+ /* Fall through. */
+
+ default:
+ r = iq2000_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel, relocation);
+ break;
+ }
+
+ if (r != bfd_reloc_ok)
+ {
+ const char * msg = (const char *) NULL;
+
+ switch (r)
+ {
+ case bfd_reloc_overflow:
+ r = info->callbacks->reloc_overflow
+ (info, name, howto->name, (bfd_vma) 0,
+ input_bfd, input_section, rel->r_offset);
+ break;
+
+ case bfd_reloc_undefined:
+ r = info->callbacks->undefined_symbol
+ (info, name, input_bfd, input_section, rel->r_offset, TRUE);
+ break;
+
+ case bfd_reloc_outofrange:
+ msg = _("internal error: out of range error");
+ break;
+
+ case bfd_reloc_notsupported:
+ msg = _("internal error: unsupported relocation error");
+ break;
+
+ case bfd_reloc_dangerous:
+ msg = _("internal error: dangerous relocation");
+ break;
+
+ default:
+ msg = _("internal error: unknown error");
+ break;
+ }
+
+ if (msg)
+ r = info->callbacks->warning
+ (info, msg, name, input_bfd, input_section, rel->r_offset);
+
+ if (! r)
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
+\f
+
+/* Update the got entry reference counts for the section being
+ removed. */
+
+static bfd_boolean
+iq2000_elf_gc_sweep_hook (abfd, info, sec, relocs)
+ bfd * abfd ATTRIBUTE_UNUSED;
+ struct bfd_link_info * info ATTRIBUTE_UNUSED;
+ asection * sec ATTRIBUTE_UNUSED;
+ const Elf_Internal_Rela * relocs ATTRIBUTE_UNUSED;
+{
+ return TRUE;
+}
+
+/* Return the section that should be marked against GC for a given
+ relocation. */
+
+static asection *
+iq2000_elf_gc_mark_hook (sec, info, rel, h, sym)
+ asection * sec;
+ struct bfd_link_info * info ATTRIBUTE_UNUSED;
+ Elf_Internal_Rela * rel;
+ struct elf_link_hash_entry * h;
+ Elf_Internal_Sym * sym;
+{
+ if (h != NULL)
+ {
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_IQ2000_GNU_VTINHERIT:
+ case R_IQ2000_GNU_VTENTRY:
+ break;
+
+ default:
+ switch (h->root.type)
+ {
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ return h->root.u.def.section;
+
+ case bfd_link_hash_common:
+ return h->root.u.c.p->section;
+
+ default:
+ break;
+ }
+ }
+ }
+ else
+ return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
+
+ return NULL;
+}
+
+\f
+/* Return the MACH for an e_flags value. */
+
+static int
+elf32_iq2000_machine (abfd)
+ bfd *abfd;
+{
+ switch (elf_elfheader (abfd)->e_flags & EF_IQ2000_CPU_MASK)
+ {
+ case EF_IQ2000_CPU_IQ2000: return bfd_mach_iq2000;
+ case EF_IQ2000_CPU_IQ10: return bfd_mach_iq10;
+ }
+
+ return bfd_mach_iq2000;
+}
+
+\f
+/* Function to set the ELF flag bits. */
+
+static bfd_boolean
+iq2000_elf_set_private_flags (abfd, flags)
+ bfd *abfd;
+ flagword flags;
+{
+ elf_elfheader (abfd)->e_flags = flags;
+ elf_flags_init (abfd) = TRUE;
+ return TRUE;
+}
+
+/* Copy backend specific data from one object module to another. */
+
+static bfd_boolean
+iq2000_elf_copy_private_bfd_data (ibfd, obfd)
+ bfd *ibfd;
+ bfd *obfd;
+{
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
+
+ BFD_ASSERT (!elf_flags_init (obfd)
+ || elf_elfheader (obfd)->e_flags == elf_elfheader (ibfd)->e_flags);
+
+ elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
+ elf_flags_init (obfd) = TRUE;
+ return TRUE;
+}
+
+/* Merge backend specific data from an object file to the output
+ object file when linking. */
+
+static bfd_boolean
+iq2000_elf_merge_private_bfd_data (ibfd, obfd)
+ bfd *ibfd;
+ bfd *obfd;
+{
+ flagword old_flags, old_partial;
+ flagword new_flags, new_partial;
+ bfd_boolean error = FALSE;
+ char new_opt[80];
+ char old_opt[80];
+
+ new_opt[0] = old_opt[0] = '\0';
+ new_flags = elf_elfheader (ibfd)->e_flags;
+ old_flags = elf_elfheader (obfd)->e_flags;
+
+#ifdef DEBUG
+ (*_bfd_error_handler) ("old_flags = 0x%.8lx, new_flags = 0x%.8lx, init = %s, filename = %s",
+ old_flags, new_flags, elf_flags_init (obfd) ? "yes" : "no",
+ bfd_get_filename (ibfd));
+#endif
+
+ if (!elf_flags_init (obfd))
+ {
+ /* First call, no flags set. */
+ elf_flags_init (obfd) = TRUE;
+ elf_elfheader (obfd)->e_flags = new_flags;
+ }
+
+ else if (new_flags == old_flags)
+ /* Compatible flags are ok. */
+ ;
+
+ else /* Possibly incompatible flags. */
+ {
+ /* Warn if different cpu is used (allow a specific cpu to override
+ the generic cpu). */
+ new_partial = (new_flags & EF_IQ2000_CPU_MASK);
+ old_partial = (old_flags & EF_IQ2000_CPU_MASK);
+ if (new_partial == old_partial)
+ ;
+
+ else
+ {
+ switch (new_partial)
+ {
+ default: strcat (new_opt, " -m2000"); break;
+ case EF_IQ2000_CPU_IQ2000: strcat (new_opt, " -m2000"); break;
+ case EF_IQ2000_CPU_IQ10: strcat (new_opt, " -m10"); break;
+ }
+
+ switch (old_partial)
+ {
+ default: strcat (old_opt, " -m2000"); break;
+ case EF_IQ2000_CPU_IQ2000: strcat (old_opt, " -m2000"); break;
+ case EF_IQ2000_CPU_IQ10: strcat (old_opt, " -m10"); break;
+ }
+ }
+
+ /* Print out any mismatches from above. */
+ if (new_opt[0])
+ {
+ error = TRUE;
+ (*_bfd_error_handler)
+ (_("%s: compiled with %s and linked with modules compiled with %s"),
+ bfd_get_filename (ibfd), new_opt, old_opt);
+ }
+
+ new_flags &= ~ EF_IQ2000_ALL_FLAGS;
+ old_flags &= ~ EF_IQ2000_ALL_FLAGS;
+
+ /* Warn about any other mismatches. */
+ if (new_flags != old_flags)
+ {
+ error = TRUE;
+ (*_bfd_error_handler)
+ (_("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)"),
+ bfd_get_filename (ibfd), (long)new_flags, (long)old_flags);
+ }
+ }
+
+ if (error)
+ bfd_set_error (bfd_error_bad_value);
+
+ return !error;
+}
+
+\f
+static bfd_boolean
+iq2000_elf_print_private_bfd_data (abfd, ptr)
+ bfd *abfd;
+ PTR ptr;
+{
+ FILE *file = (FILE *) ptr;
+ flagword flags;
+
+ BFD_ASSERT (abfd != NULL && ptr != NULL);
+
+ /* Print normal ELF private data. */
+ _bfd_elf_print_private_bfd_data (abfd, ptr);
+
+ flags = elf_elfheader (abfd)->e_flags;
+ fprintf (file, _("private flags = 0x%lx:"), (long)flags);
+
+ switch (flags & EF_IQ2000_CPU_MASK)
+ {
+ default: break;
+ case EF_IQ2000_CPU_IQ2000: fprintf (file, " -m2000"); break;
+ case EF_IQ2000_CPU_IQ10: fprintf (file, " -m10"); break;
+ }
+
+ fputc ('\n', file);
+}
+
+static
+bfd_boolean
+iq2000_elf_object_p (abfd)
+ bfd *abfd;
+{
+ /* Irix 5 and 6 is broken. Object file symbol tables are not always
+ sorted correctly such that local symbols precede global symbols,
+ and the sh_info field in the symbol table is not always right. */
+ elf_bad_symtab (abfd) = TRUE;
+
+ bfd_default_set_arch_mach (abfd, bfd_arch_iq2000,
+ elf32_iq2000_machine (abfd));
+ return TRUE;
+}
+
+\f
+#define ELF_ARCH bfd_arch_iq2000
+#define ELF_MACHINE_CODE EM_IQ2000
+#define ELF_MAXPAGESIZE 0x1000
+
+#define TARGET_BIG_SYM bfd_elf32_iq2000_vec
+#define TARGET_BIG_NAME "elf32-iq2000"
+
+#define elf_info_to_howto_rel NULL
+#define elf_info_to_howto iq2000_info_to_howto_rela
+#define elf_backend_relocate_section iq2000_elf_relocate_section
+#define elf_backend_gc_mark_hook iq2000_elf_gc_mark_hook
+#define elf_backend_gc_sweep_hook iq2000_elf_gc_sweep_hook
+#define elf_backend_check_relocs iq2000_elf_check_relocs
+#define elf_backend_object_p iq2000_elf_object_p
+#define elf_backend_rela_normal 1
+
+#define elf_backend_can_gc_sections 1
+
+#define bfd_elf32_bfd_reloc_type_lookup iq2000_reloc_type_lookup
+#define bfd_elf32_bfd_set_private_flags iq2000_elf_set_private_flags
+#define bfd_elf32_bfd_copy_private_bfd_data iq2000_elf_copy_private_bfd_data
+#define bfd_elf32_bfd_merge_private_bfd_data iq2000_elf_merge_private_bfd_data
+#define bfd_elf32_bfd_print_private_bfd_data iq2000_elf_print_private_bfd_data
+
+#include "elf32-target.h"
projects / external / binutils.git / commitdiff