diff options
Diffstat (limited to 'binutils-2.25/bfd/elf32-cris.c')
| -rw-r--r-- | binutils-2.25/bfd/elf32-cris.c | 4413 |
1 files changed, 4413 insertions, 0 deletions
diff --git a/binutils-2.25/bfd/elf32-cris.c b/binutils-2.25/bfd/elf32-cris.c new file mode 100644 index 00000000..f35292ed --- /dev/null +++ b/binutils-2.25/bfd/elf32-cris.c @@ -0,0 +1,4413 @@ +/* CRIS-specific support for 32-bit ELF. + Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, + 2010, 2011, 2012 Free Software Foundation, Inc. + Contributed by Axis Communications AB. + Written by Hans-Peter Nilsson, based on elf32-fr30.c + PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c. + + 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 3 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., 51 Franklin Street - Fifth Floor, Boston, + MA 02110-1301, USA. */ + +#include "sysdep.h" +#include "bfd.h" +#include "libbfd.h" +#include "elf-bfd.h" +#include "elf/cris.h" +#include <limits.h> + +bfd_reloc_status_type +cris_elf_pcrel_reloc (bfd *, arelent *, asymbol *, void *, + asection *, bfd *, char **); +static bfd_boolean +cris_elf_set_mach_from_flags (bfd *, unsigned long); + +/* Forward declarations. */ +static reloc_howto_type cris_elf_howto_table [] = +{ + /* This reloc does nothing. */ + HOWTO (R_CRIS_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_CRIS_NONE", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* An 8 bit absolute relocation. */ + HOWTO (R_CRIS_8, /* type */ + 0, /* rightshift */ + 0, /* size (0 = byte, 1 = short, 2 = long) */ + 8, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_CRIS_8", /* name */ + FALSE, /* partial_inplace */ + 0x0000, /* src_mask */ + 0x00ff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* A 16 bit absolute relocation. */ + HOWTO (R_CRIS_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_CRIS_16", /* name */ + FALSE, /* partial_inplace */ + 0x00000000, /* src_mask */ + 0x0000ffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* A 32 bit absolute relocation. */ + HOWTO (R_CRIS_32, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + FALSE, /* pc_relative */ + 0, /* bitpos */ + /* We don't want overflow complaints for 64-bit vma builds + for e.g. sym+0x40000000 (or actually sym-0xc0000000 in + 32-bit ELF) where sym=0xc0001234. + Don't do this for the PIC relocs, as we don't expect to + see them with large offsets. */ + complain_overflow_dont, /* complain_on_overflow */ + bfd_elf_generic_reloc, /* special_function */ + "R_CRIS_32", /* name */ + FALSE, /* partial_inplace */ + 0x00000000, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* An 8 bit PC-relative relocation. */ + HOWTO (R_CRIS_8_PCREL, /* type */ + 0, /* rightshift */ + 0, /* size (0 = byte, 1 = short, 2 = long) */ + 8, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + cris_elf_pcrel_reloc, /* special_function */ + "R_CRIS_8_PCREL", /* name */ + FALSE, /* partial_inplace */ + 0x0000, /* src_mask */ + 0x00ff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + /* A 16 bit PC-relative relocation. */ + HOWTO (R_CRIS_16_PCREL, /* type */ + 0, /* rightshift */ + 1, /* size (0 = byte, 1 = short, 2 = long) */ + 16, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + cris_elf_pcrel_reloc, /* special_function */ + "R_CRIS_16_PCREL", /* name */ + FALSE, /* partial_inplace */ + 0x00000000, /* src_mask */ + 0x0000ffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + /* A 32 bit PC-relative relocation. */ + HOWTO (R_CRIS_32_PCREL, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + cris_elf_pcrel_reloc, /* special_function */ + "R_CRIS_32_PCREL", /* name */ + FALSE, /* partial_inplace */ + 0x00000000, /* src_mask */ + 0xffffffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + /* GNU extension to record C++ vtable hierarchy. */ + HOWTO (R_CRIS_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_CRIS_GNU_VTINHERIT", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* GNU extension to record C++ vtable member usage. */ + HOWTO (R_CRIS_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 */ + _bfd_elf_rel_vtable_reloc_fn, /* special_function */ + "R_CRIS_GNU_VTENTRY", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* This is used only by the dynamic linker. The symbol should exist + both in the object being run and in some shared library. The + dynamic linker copies the data addressed by the symbol from the + shared library into the object, because the object being + run has to have the data at some particular address. */ + HOWTO (R_CRIS_COPY, /* 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_CRIS_COPY", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like R_CRIS_32, but used when setting global offset table entries. */ + HOWTO (R_CRIS_GLOB_DAT, /* 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_CRIS_GLOB_DAT", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Marks a procedure linkage table entry for a symbol. */ + HOWTO (R_CRIS_JUMP_SLOT, /* 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_CRIS_JUMP_SLOT", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Used only by the dynamic linker. When the object is run, this + longword is set to the load address of the object, plus the + addend. */ + HOWTO (R_CRIS_RELATIVE, /* 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_CRIS_RELATIVE", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */ + HOWTO (R_CRIS_16_GOT, /* 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_CRIS_16_GOT", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_CRIS_32_GOT, /* 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_CRIS_32_GOT", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of + the GOT table for the symbol. */ + HOWTO (R_CRIS_16_GOTPLT, /* 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_CRIS_16_GOTPLT", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + HOWTO (R_CRIS_32_GOTPLT, /* 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_CRIS_32_GOTPLT", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should + be necessary. */ + HOWTO (R_CRIS_32_GOTREL, /* 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_CRIS_32_GOTREL", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* A 32-bit offset from GOT to entry for this symbol in PLT and request + to create PLT entry for symbol. */ + HOWTO (R_CRIS_32_PLT_GOTREL, /* 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_CRIS_32_PLT_GOTREL", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + FALSE), /* pcrel_offset */ + + /* A 32-bit offset from PC (location after the relocation) + addend to + entry for this symbol in PLT and request to create PLT entry for + symbol. */ + HOWTO (R_CRIS_32_PLT_PCREL, /* type */ + 0, /* rightshift */ + 2, /* size (0 = byte, 1 = short, 2 = long) */ + 32, /* bitsize */ + TRUE, /* pc_relative */ + 0, /* bitpos */ + complain_overflow_bitfield, /* complain_on_overflow */ + cris_elf_pcrel_reloc, /* special_function */ + "R_CRIS_32_PLT_PCREL", /* name */ + FALSE, /* partial_inplace */ + 0, /* src_mask */ + 0xffffffff, /* dst_mask */ + TRUE), /* pcrel_offset */ + + /* We don't handle these in any special manner and cross-format + linking is not supported; just recognize them enough to pass them + around. FIXME: do the same for most PIC relocs and add sanity + tests to actually refuse gracefully to handle these and PIC + relocs for cross-format linking. */ +#define TLSHOWTO32(name) \ + HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \ + bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE) +#define TLSHOWTO16X(name, X) \ + HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \ + bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE) +#define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned) +#define TLSHOWTO16S(name) TLSHOWTO16X(name, signed) + + TLSHOWTO32 (R_CRIS_32_GOT_GD), + TLSHOWTO16 (R_CRIS_16_GOT_GD), + TLSHOWTO32 (R_CRIS_32_GD), + TLSHOWTO32 (R_CRIS_DTP), + TLSHOWTO32 (R_CRIS_32_DTPREL), + TLSHOWTO16S (R_CRIS_16_DTPREL), + TLSHOWTO32 (R_CRIS_32_GOT_TPREL), + TLSHOWTO16S (R_CRIS_16_GOT_TPREL), + TLSHOWTO32 (R_CRIS_32_TPREL), + TLSHOWTO16S (R_CRIS_16_TPREL), + TLSHOWTO32 (R_CRIS_DTPMOD), + TLSHOWTO32 (R_CRIS_32_IE) +}; + +/* Map BFD reloc types to CRIS ELF reloc types. */ + +struct cris_reloc_map +{ + bfd_reloc_code_real_type bfd_reloc_val; + unsigned int cris_reloc_val; +}; + +static const struct cris_reloc_map cris_reloc_map [] = +{ + { BFD_RELOC_NONE, R_CRIS_NONE }, + { BFD_RELOC_8, R_CRIS_8 }, + { BFD_RELOC_16, R_CRIS_16 }, + { BFD_RELOC_32, R_CRIS_32 }, + { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL }, + { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL }, + { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL }, + { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT }, + { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY }, + { BFD_RELOC_CRIS_COPY, R_CRIS_COPY }, + { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT }, + { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT }, + { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE }, + { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT }, + { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT }, + { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT }, + { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT }, + { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL }, + { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL }, + { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL }, + { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD }, + { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD }, + { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD }, + { BFD_RELOC_CRIS_DTP, R_CRIS_DTP }, + { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL }, + { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL }, + { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL }, + { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL }, + { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL }, + { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL }, + { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD }, + { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE } +}; + +static reloc_howto_type * +cris_reloc_type_lookup (bfd * abfd ATTRIBUTE_UNUSED, + bfd_reloc_code_real_type code) +{ + unsigned int i; + + for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++) + if (cris_reloc_map [i].bfd_reloc_val == code) + return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val]; + + return NULL; +} + +static reloc_howto_type * +cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name) +{ + unsigned int i; + + for (i = 0; + i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]); + i++) + if (cris_elf_howto_table[i].name != NULL + && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0) + return &cris_elf_howto_table[i]; + + return NULL; +} + +/* Set the howto pointer for an CRIS ELF reloc. */ + +static void +cris_info_to_howto_rela (bfd * abfd ATTRIBUTE_UNUSED, + arelent * cache_ptr, + Elf_Internal_Rela * dst) +{ + enum elf_cris_reloc_type r_type; + + r_type = ELF32_R_TYPE (dst->r_info); + BFD_ASSERT (r_type < (unsigned int) R_CRIS_max); + cache_ptr->howto = & cris_elf_howto_table [r_type]; +} + +bfd_reloc_status_type +cris_elf_pcrel_reloc (bfd *abfd ATTRIBUTE_UNUSED, + arelent *reloc_entry, + asymbol *symbol, + void * data ATTRIBUTE_UNUSED, + asection *input_section, + bfd *output_bfd, + char **error_message ATTRIBUTE_UNUSED) +{ + /* By default (using only bfd_elf_generic_reloc when linking to + non-ELF formats) PC-relative relocs are relative to the beginning + of the reloc. CRIS PC-relative relocs are relative to the position + *after* the reloc because that's what pre-CRISv32 PC points to + after reading an insn field with that reloc. (For CRISv32, PC is + actually relative to the start of the insn, but we keep the old + definition.) Still, we use as much generic machinery as we can. + + Only adjust when doing a final link. */ + if (output_bfd == (bfd *) NULL) + reloc_entry->addend -= 1 << reloc_entry->howto->size; + + return + bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, + input_section, output_bfd, error_message); +} + +/* Support for core dump NOTE sections. + The slightly unintuitive code layout is an attempt to keep at least + some similarities with other ports, hoping to simplify general + changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */ + +static bfd_boolean +cris_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note) +{ + int offset; + size_t size; + + if (bfd_get_mach (abfd) == bfd_mach_cris_v32) + switch (note->descsz) + { + default: + return FALSE; + + case 202: /* Linux/CRISv32 */ + /* pr_cursig */ + elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); + + /* pr_pid */ + elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22); + + /* pr_reg */ + offset = 70; + size = 128; + + break; + } + else + switch (note->descsz) + { + default: + return FALSE; + + case 214: /* Linux/CRIS */ + /* pr_cursig */ + elf_tdata (abfd)->core->signal = bfd_get_16 (abfd, note->descdata + 12); + + /* pr_pid */ + elf_tdata (abfd)->core->lwpid = bfd_get_32 (abfd, note->descdata + 22); + + /* pr_reg */ + offset = 70; + size = 140; + + break; + } + + /* Make a ".reg/999" section. */ + return _bfd_elfcore_make_pseudosection (abfd, ".reg", + size, note->descpos + offset); +} + +static bfd_boolean +cris_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note) +{ + if (bfd_get_mach (abfd) == bfd_mach_cris_v32) + switch (note->descsz) + { + default: + return FALSE; + + case 124: /* Linux/CRISv32 elf_prpsinfo */ + elf_tdata (abfd)->core->program + = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); + elf_tdata (abfd)->core->command + = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); + } + else + switch (note->descsz) + { + default: + return FALSE; + + case 124: /* Linux/CRIS elf_prpsinfo */ + elf_tdata (abfd)->core->program + = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16); + elf_tdata (abfd)->core->command + = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80); + } + + /* Note that for some reason, a spurious space is tacked + onto the end of the args in some (at least one anyway) + implementations, so strip it off if it exists. */ + + { + char *command = elf_tdata (abfd)->core->command; + int n = strlen (command); + + if (0 < n && command[n - 1] == ' ') + command[n - 1] = '\0'; + } + + return TRUE; +} + +/* The name of the dynamic interpreter. This is put in the .interp + section. */ + +#define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1" + +/* The size in bytes of an entry in the procedure linkage table. */ + +#define PLT_ENTRY_SIZE 20 +#define PLT_ENTRY_SIZE_V32 26 + +/* The first entry in an absolute procedure linkage table looks like this. */ + +static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] = +{ + 0xfc, 0xe1, + 0x7e, 0x7e, /* push mof. */ + 0x7f, 0x0d, /* (dip [pc+]) */ + 0, 0, 0, 0, /* Replaced with address of .got + 4. */ + 0x30, 0x7a, /* move [...],mof */ + 0x7f, 0x0d, /* (dip [pc+]) */ + 0, 0, 0, 0, /* Replaced with address of .got + 8. */ + 0x30, 0x09 /* jump [...] */ +}; + +static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = +{ + 0x84, 0xe2, /* subq 4,$sp */ + 0x6f, 0xfe, /* move.d 0,$acr */ + 0, 0, 0, 0, /* Replaced by address of .got + 4. */ + 0x7e, 0x7a, /* move $mof,[$sp] */ + 0x3f, 0x7a, /* move [$acr],$mof */ + 0x04, 0xf2, /* addq 4,acr */ + 0x6f, 0xfa, /* move.d [$acr],$acr */ + 0xbf, 0x09, /* jump $acr */ + 0xb0, 0x05, /* nop */ + 0, 0 /* Pad out to 26 bytes. */ +}; + +/* Subsequent entries in an absolute procedure linkage table look like + this. */ + +static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] = +{ + 0x7f, 0x0d, /* (dip [pc+]) */ + 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ + 0x30, 0x09, /* jump [...] */ + 0x3f, 0x7e, /* move [pc+],mof */ + 0, 0, 0, 0, /* Replaced with offset into relocation table. */ + 0x2f, 0xfe, /* add.d [pc+],pc */ + 0xec, 0xff, + 0xff, 0xff /* Replaced with offset to start of .plt. */ +}; + +static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] = +{ + 0x6f, 0xfe, /* move.d 0,$acr */ + 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */ + 0x6f, 0xfa, /* move.d [$acr],$acr */ + 0xbf, 0x09, /* jump $acr */ + 0xb0, 0x05, /* nop */ + 0x3f, 0x7e, /* move 0,mof */ + 0, 0, 0, 0, /* Replaced with offset into relocation table. */ + 0xbf, 0x0e, /* ba start_of_plt0_entry */ + 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */ + 0xb0, 0x05 /* nop */ +}; + +/* The first entry in a PIC procedure linkage table looks like this. */ + +static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] = +{ + 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */ + 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */ + 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */ + 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */ +}; + +static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] = +{ + 0x84, 0xe2, /* subq 4,$sp */ + 0x04, 0x01, /* addoq 4,$r0,$acr */ + 0x7e, 0x7a, /* move $mof,[$sp] */ + 0x3f, 0x7a, /* move [$acr],$mof */ + 0x04, 0xf2, /* addq 4,$acr */ + 0x6f, 0xfa, /* move.d [$acr],$acr */ + 0xbf, 0x09, /* jump $acr */ + 0xb0, 0x05, /* nop */ + 0, 0, /* Pad out to 26 bytes. */ + 0, 0, 0, 0, + 0, 0, 0, 0 +}; + +/* Subsequent entries in a PIC procedure linkage table look like this. */ + +static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] = +{ + 0x6f, 0x0d, /* (bdap [pc+].d,r0) */ + 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ + 0x30, 0x09, /* jump [...] */ + 0x3f, 0x7e, /* move [pc+],mof */ + 0, 0, 0, 0, /* Replaced with offset into relocation table. */ + 0x2f, 0xfe, /* add.d [pc+],pc */ + 0xec, 0xff, /* Replaced with offset to start of .plt. */ + 0xff, 0xff +}; + +static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] = +{ + 0x6f, 0x0d, /* addo.d 0,$r0,$acr */ + 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */ + 0x6f, 0xfa, /* move.d [$acr],$acr */ + 0xbf, 0x09, /* jump $acr */ + 0xb0, 0x05, /* nop */ + 0x3f, 0x7e, /* move relocoffs,$mof */ + 0, 0, 0, 0, /* Replaced with offset into relocation table. */ + 0xbf, 0x0e, /* ba start_of_plt */ + 0, 0, 0, 0, /* Replaced with offset to start of .plt. */ + 0xb0, 0x05 /* nop */ +}; + +/* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits + (and most other PIC/shlib stuff). Check that we don't drift away + without reason. + + The CRIS linker, like the m68k and i386 linkers (and probably the rest + too) needs to keep track of the number of relocs that it decides to + copy in check_relocs for each symbol. This is so that it can discard + PC relative relocs if it doesn't need them when linking with + -Bsymbolic. We store the information in a field extending the regular + ELF linker hash table. */ + +/* This structure keeps track of the number of PC relative relocs we have + copied for a given symbol. */ + +struct elf_cris_pcrel_relocs_copied +{ + /* Next section. */ + struct elf_cris_pcrel_relocs_copied *next; + + /* A section in dynobj. */ + asection *section; + + /* Number of relocs copied in this section. */ + bfd_size_type count; + + /* Example of reloc being copied, for message. */ + enum elf_cris_reloc_type r_type; +}; + +/* CRIS ELF linker hash entry. */ + +struct elf_cris_link_hash_entry +{ + struct elf_link_hash_entry root; + + /* Number of PC relative relocs copied for this symbol. */ + struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied; + + /* The GOTPLT references are CRIS-specific; the goal is to avoid having + both a general GOT and a PLT-specific GOT entry for the same symbol, + when it is referenced both as a function and as a function pointer. + + Number of GOTPLT references for a function. */ + bfd_signed_vma gotplt_refcount; + + /* Actual GOTPLT index for this symbol, if applicable, or zero if not + (zero is never used as an index). FIXME: We should be able to fold + this with gotplt_refcount in a union, like the got and plt unions in + elf_link_hash_entry. */ + bfd_size_type gotplt_offset; + + /* The root.got.refcount is the sum of the regular reference counts + (this) and those members below. We have to keep a separate count + to track when we've found the first (or last) reference to a + regular got entry. The offset is in root.got.offset. */ + bfd_signed_vma reg_got_refcount; + + /* Similar to the above, the number of reloc references to this + symbols that need a R_CRIS_32_TPREL slot. The offset is in + root.got.offset, because this and .dtp_refcount can't validly + happen when there's also a regular GOT entry; that's invalid + input for which an error is emitted. */ + bfd_signed_vma tprel_refcount; + + /* Similar to the above, the number of reloc references to this + symbols that need a R_CRIS_DTP slot. The offset is in + root.got.offset; plus 4 if .tprel_refcount > 0. */ + bfd_signed_vma dtp_refcount; +}; + +static bfd_boolean +elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *, + void * ); +static bfd_boolean +elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *, + void *); + +/* The local_got_refcounts and local_got_offsets are a multiple of + LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the + refcount for GOT itself, see code), with the summary / group offset + for local symbols located at offset N, reference counts for + ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP + relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N + + 3*LSNUM. */ + +#define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info) +#define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info) +#define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info) +#define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4) + +/* CRIS ELF linker hash table. */ + +struct elf_cris_link_hash_table +{ + struct elf_link_hash_table root; + + /* We can't use the PLT offset and calculate to get the GOTPLT offset, + since we try and avoid creating GOTPLT:s when there's already a GOT. + Instead, we keep and update the next available index here. */ + bfd_size_type next_gotplt_entry; + + /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have + been seen for any input; if != 0, then the constant-offset + R_CRIS_DTPMOD is needed for this DSO/executable. This turns + negative at relocation, so that we don't need an extra flag for + when the reloc is output. */ + bfd_signed_vma dtpmod_refcount; +}; + +/* Traverse a CRIS ELF linker hash table. */ + +#define elf_cris_link_hash_traverse(table, func, info) \ + (elf_link_hash_traverse \ + (&(table)->root, \ + (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ + (info))) + +/* Get the CRIS ELF linker hash table from a link_info structure. */ + +#define elf_cris_hash_table(p) \ + (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \ + == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL) + +/* Get the CRIS ELF linker hash entry from a regular hash entry (the + "parent class"). The .root reference is just a simple type + check on the argument. */ + +#define elf_cris_hash_entry(p) \ + ((struct elf_cris_link_hash_entry *) (&(p)->root)) + +/* Create an entry in a CRIS ELF linker hash table. */ + +static struct bfd_hash_entry * +elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry, + struct bfd_hash_table *table, + const char *string) +{ + struct elf_cris_link_hash_entry *ret = + (struct elf_cris_link_hash_entry *) entry; + + /* Allocate the structure if it has not already been allocated by a + subclass. */ + if (ret == (struct elf_cris_link_hash_entry *) NULL) + ret = ((struct elf_cris_link_hash_entry *) + bfd_hash_allocate (table, + sizeof (struct elf_cris_link_hash_entry))); + if (ret == (struct elf_cris_link_hash_entry *) NULL) + return (struct bfd_hash_entry *) ret; + + /* Call the allocation method of the superclass. */ + ret = ((struct elf_cris_link_hash_entry *) + _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, + table, string)); + if (ret != (struct elf_cris_link_hash_entry *) NULL) + { + ret->pcrel_relocs_copied = NULL; + ret->gotplt_refcount = 0; + ret->gotplt_offset = 0; + ret->dtp_refcount = 0; + ret->tprel_refcount = 0; + ret->reg_got_refcount = 0; + } + + return (struct bfd_hash_entry *) ret; +} + +/* Create a CRIS ELF linker hash table. */ + +static struct bfd_link_hash_table * +elf_cris_link_hash_table_create (bfd *abfd) +{ + struct elf_cris_link_hash_table *ret; + bfd_size_type amt = sizeof (struct elf_cris_link_hash_table); + + ret = ((struct elf_cris_link_hash_table *) bfd_zmalloc (amt)); + if (ret == (struct elf_cris_link_hash_table *) NULL) + return NULL; + + if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, + elf_cris_link_hash_newfunc, + sizeof (struct elf_cris_link_hash_entry), + CRIS_ELF_DATA)) + { + free (ret); + return NULL; + } + + /* Initialize to skip over the first three entries in the gotplt; they + are used for run-time symbol evaluation. */ + ret->next_gotplt_entry = 12; + + return &ret->root.root; +} + +/* Perform a single relocation. By default we use the standard BFD + routines, with a few tweaks. */ + +static bfd_reloc_status_type +cris_final_link_relocate (reloc_howto_type * howto, + bfd * input_bfd, + asection * input_section, + bfd_byte * contents, + Elf_Internal_Rela * rel, + bfd_vma relocation) +{ + bfd_reloc_status_type r; + enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info); + + /* PC-relative relocations are relative to the position *after* + the reloc. Note that for R_CRIS_8_PCREL the adjustment is + not a single byte, since PC must be 16-bit-aligned. */ + switch (r_type) + { + /* Check that the 16-bit GOT relocs are positive. */ + case R_CRIS_16_GOTPLT: + case R_CRIS_16_GOT: + if ((bfd_signed_vma) relocation < 0) + return bfd_reloc_overflow; + break; + + case R_CRIS_32_PLT_PCREL: + case R_CRIS_32_PCREL: + relocation -= 2; + /* Fall through. */ + case R_CRIS_8_PCREL: + case R_CRIS_16_PCREL: + relocation -= 2; + break; + + default: + break; + } + + r = _bfd_final_link_relocate (howto, input_bfd, input_section, + contents, rel->r_offset, + relocation, rel->r_addend); + return r; +} + + +/* The number of errors left before we stop outputting reloc-specific + explanatory messages. By coincidence, this works nicely together + with the default number of messages you'll get from LD about + "relocation truncated to fit" messages before you get an + "additional relocation overflows omitted from the output". */ +static int additional_relocation_error_msg_count = 10; + +/* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was + copied, for further comments. */ + +static bfd_boolean +cris_elf_relocate_section (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) +{ + struct elf_cris_link_hash_table * htab; + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_vma *local_got_offsets; + asection *sgot; + asection *splt; + asection *sreloc; + Elf_Internal_Rela *rel; + Elf_Internal_Rela *relend; + asection *srelgot; + + htab = elf_cris_hash_table (info); + if (htab == NULL) + return FALSE; + + dynobj = elf_hash_table (info)->dynobj; + local_got_offsets = elf_local_got_offsets (input_bfd); + symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (input_bfd); + relend = relocs + input_section->reloc_count; + + sgot = NULL; + splt = NULL; + sreloc = NULL; + srelgot = NULL; + + if (dynobj != NULL) + { + splt = bfd_get_linker_section (dynobj, ".plt"); + sgot = bfd_get_linker_section (dynobj, ".got"); + } + + 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 *symname = NULL; + enum elf_cris_reloc_type r_type; + + r_type = ELF32_R_TYPE (rel->r_info); + + if ( r_type == R_CRIS_GNU_VTINHERIT + || r_type == R_CRIS_GNU_VTENTRY) + continue; + + r_symndx = ELF32_R_SYM (rel->r_info); + howto = cris_elf_howto_table + r_type; + h = NULL; + sym = NULL; + sec = NULL; + + if (r_symndx < symtab_hdr->sh_info) + { + sym = local_syms + r_symndx; + sec = local_sections [r_symndx]; + relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); + + symname = (bfd_elf_string_from_elf_section + (input_bfd, symtab_hdr->sh_link, sym->st_name)); + if (symname == NULL) + symname = bfd_section_name (input_bfd, sec); + } + else + { + bfd_boolean warned; + bfd_boolean unresolved_reloc; + + RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel, + r_symndx, symtab_hdr, sym_hashes, + h, sec, relocation, + unresolved_reloc, warned); + + symname = h->root.root.string; + + if (unresolved_reloc + /* Perhaps we should detect the cases that + sec->output_section is expected to be NULL like i386 and + m68k, but apparently (and according to elfxx-ia64.c) all + valid cases are where the symbol is defined in a shared + object which we link dynamically against. This includes + PLT relocs for which we've created a PLT entry and other + relocs for which we're prepared to create dynamic + relocations. + + For now, new situations cause us to just err when + sec->output_offset is NULL but the object with the symbol + is *not* dynamically linked against. Thus this will + automatically remind us so we can see if there are other + valid cases we need to revisit. */ + && (sec->owner->flags & DYNAMIC) != 0) + relocation = 0; + + else if (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak) + { + /* Here follow the cases where the relocation value must + be zero (or when further handling is simplified when + zero). I can't claim to understand the various + conditions and they weren't described in the files + where I copied them from (elf32-m68k.c and + elf32-i386.c), but let's mention examples of where + they happen. FIXME: Perhaps define and use a + dynamic_symbol_p function like ia64. + + - When creating a shared library, we can have an + ordinary relocation for a symbol defined in a shared + library (perhaps the one we create). We then make + the relocation value zero, as the value seen now will + be added into the relocation addend in this shared + library, but must be handled only at dynamic-link + time. FIXME: Not sure this example covers the + h->elf_link_hash_flags test, though it's there in + other targets. */ + if (info->shared + && ((! info->symbolic && h->dynindx != -1) + || !h->def_regular) + && (input_section->flags & SEC_ALLOC) != 0 + && (r_type == R_CRIS_8 + || r_type == R_CRIS_16 + || r_type == R_CRIS_32 + || r_type == R_CRIS_8_PCREL + || r_type == R_CRIS_16_PCREL + || r_type == R_CRIS_32_PCREL)) + relocation = 0; + else if (!info->relocatable && unresolved_reloc + && (_bfd_elf_section_offset (output_bfd, info, + input_section, + rel->r_offset) + != (bfd_vma) -1)) + { + _bfd_error_handler + (_("%B, section %A: unresolvable relocation %s against symbol `%s'"), + input_bfd, + input_section, + cris_elf_howto_table[r_type].name, + symname); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + } + } + + if (sec != NULL && discarded_section (sec)) + RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section, + rel, 1, relend, howto, 0, contents); + + if (info->relocatable) + continue; + + switch (r_type) + { + case R_CRIS_16_GOTPLT: + case R_CRIS_32_GOTPLT: + /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT, + but we require a PLT, and the PLT handling will take care of + filling in the PLT-specific GOT entry. For the GOT offset, + calculate it as we do when filling it in for the .got.plt + section. If we don't have a PLT, punt to GOT handling. */ + if (h != NULL + && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0) + { + asection *sgotplt + = bfd_get_linker_section (dynobj, ".got.plt"); + bfd_vma got_offset; + + BFD_ASSERT (h->dynindx != -1); + BFD_ASSERT (sgotplt != NULL); + + got_offset + = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset; + + relocation = got_offset; + break; + } + + /* We didn't make a PLT entry for this symbol. Maybe everything is + folded into the GOT. Other than folding, this happens when + statically linking PIC code, or when using -Bsymbolic. Check + that we instead have a GOT entry as done for us by + elf_cris_adjust_dynamic_symbol, and drop through into the + ordinary GOT cases. This must not happen for the + executable, because any reference it does to a function + that is satisfied by a DSO must generate a PLT. We assume + these call-specific relocs don't address non-functions. */ + if (h != NULL + && (h->got.offset == (bfd_vma) -1 + || (!info->shared + && !(h->def_regular + || (!h->def_dynamic + && h->root.type == bfd_link_hash_undefweak))))) + { + (*_bfd_error_handler) + ((h->got.offset == (bfd_vma) -1) + ? _("%B, section %A: No PLT nor GOT for relocation %s" + " against symbol `%s'") + : _("%B, section %A: No PLT for relocation %s" + " against symbol `%s'"), + input_bfd, + input_section, + cris_elf_howto_table[r_type].name, + (symname != NULL && symname[0] != '\0' + ? symname : _("[whose name is lost]"))); + + /* FIXME: Perhaps blaming input is not the right thing to + do; this is probably an internal error. But it is true + that we didn't like that particular input. */ + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + /* Fall through. */ + + /* The size of the actual relocation is not used here; we only + fill in the GOT table here. */ + case R_CRIS_16_GOT: + case R_CRIS_32_GOT: + { + bfd_vma off; + + /* Note that despite using RELA relocations, the .got contents + is always filled in with the link-relative relocation + value; the addend. */ + + if (h != NULL) + { + off = h->got.offset; + BFD_ASSERT (off != (bfd_vma) -1); + + if (!elf_hash_table (info)->dynamic_sections_created + || (! info->shared + && (h->def_regular + || h->type == STT_FUNC + || h->needs_plt)) + || (info->shared + && (info->symbolic || h->dynindx == -1) + && h->def_regular)) + { + /* This wasn't checked above for ! info->shared, but + must hold there if we get here; the symbol must + be defined in the regular program or be undefweak + or be a function or otherwise need a PLT. */ + BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created + || info->shared + || h->def_regular + || h->type == STT_FUNC + || h->needs_plt + || h->root.type == bfd_link_hash_undefweak); + + /* This is actually a static link, or it is a + -Bsymbolic link and the symbol is defined locally, + or is undefweak, or the symbol was forced to be + local because of a version file, or we're not + creating a dynamic object. We must initialize this + entry in the global offset table. Since the offset + must always be a multiple of 4, we use the least + significant bit to record whether we have + initialized it already. + + If this GOT entry should be runtime-initialized, we + will create a .rela.got relocation entry to + initialize the value. This is done in the + finish_dynamic_symbol routine. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_32 (output_bfd, relocation, + sgot->contents + off); + h->got.offset |= 1; + } + } + } + else + { + BFD_ASSERT (local_got_offsets != NULL + && local_got_offsets[r_symndx] != (bfd_vma) -1); + + off = local_got_offsets[r_symndx]; + + /* The offset must always be a multiple of 4. We use + the least significant bit to record whether we have + already generated the necessary reloc. */ + if ((off & 1) != 0) + off &= ~1; + else + { + bfd_put_32 (output_bfd, relocation, sgot->contents + off); + + if (info->shared) + { + Elf_Internal_Rela outrel; + bfd_byte *loc; + + if (srelgot == NULL) + srelgot + = bfd_get_linker_section (dynobj, ".rela.got"); + BFD_ASSERT (srelgot != NULL); + + outrel.r_offset = (sgot->output_section->vma + + sgot->output_offset + + off); + outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); + outrel.r_addend = relocation; + loc = srelgot->contents; + loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); + } + + local_got_offsets[r_symndx] |= 1; + } + } + + relocation = sgot->output_offset + off; + if (rel->r_addend != 0) + { + /* We can't do anything for a relocation which is against + a symbol *plus offset*. GOT holds relocations for + symbols. Make this an error; the compiler isn't + allowed to pass us these kinds of things. */ + if (h == NULL) + (*_bfd_error_handler) + (_("%B, section %A: relocation %s with non-zero addend %d" + " against local symbol"), + input_bfd, + input_section, + cris_elf_howto_table[r_type].name, + rel->r_addend); + else + (*_bfd_error_handler) + (_("%B, section %A: relocation %s with non-zero addend %d" + " against symbol `%s'"), + input_bfd, + input_section, + cris_elf_howto_table[r_type].name, + rel->r_addend, + symname[0] != '\0' ? symname : _("[whose name is lost]")); + + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + } + break; + + case R_CRIS_32_GOTREL: + /* This relocation must only be performed against local symbols. + It's also ok when we link a program and the symbol is either + defined in an ordinary (non-DSO) object or is undefined weak. */ + if (h != NULL + && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT + && !(!info->shared + && (h->def_regular + || (!h->def_dynamic + && h->root.type == bfd_link_hash_undefweak)))) + { + (*_bfd_error_handler) + (_("%B, section %A: relocation %s is" + " not allowed for global symbol: `%s'"), + input_bfd, + input_section, + cris_elf_howto_table[r_type].name, + symname); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + /* This can happen if we get a link error with the input ELF + variant mismatching the output variant. Emit an error so + it's noticed if it happens elsewhere. */ + if (sgot == NULL) + { + (*_bfd_error_handler) + (_("%B, section %A: relocation %s with no GOT created"), + input_bfd, + input_section, + cris_elf_howto_table[r_type].name); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + /* This relocation is like a PC-relative one, except the + reference point is the location of GOT. Note that + sgot->output_offset is not involved in this calculation. We + always want the start of entire .got section, not the + position after the reserved header. */ + relocation -= sgot->output_section->vma; + break; + + case R_CRIS_32_PLT_PCREL: + /* Relocation is to the entry for this symbol in the + procedure linkage table. */ + + /* Resolve a PLT_PCREL reloc against a local symbol directly, + without using the procedure linkage table. */ + if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) + break; + + if (h->plt.offset == (bfd_vma) -1 + || splt == NULL) + { + /* We didn't make a PLT entry for this symbol. This + happens when statically linking PIC code, or when + using -Bsymbolic. */ + break; + } + + relocation = (splt->output_section->vma + + splt->output_offset + + h->plt.offset); + break; + + case R_CRIS_32_PLT_GOTREL: + /* Like R_CRIS_32_PLT_PCREL, but the reference point is the + start of the .got section. See also comment at + R_CRIS_32_GOT. */ + relocation -= sgot->output_section->vma; + + /* Resolve a PLT_GOTREL reloc against a local symbol directly, + without using the procedure linkage table. */ + if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) + break; + + if (h->plt.offset == (bfd_vma) -1 + || splt == NULL) + { + /* We didn't make a PLT entry for this symbol. This + happens when statically linking PIC code, or when + using -Bsymbolic. */ + break; + } + + relocation = (splt->output_section->vma + + splt->output_offset + + h->plt.offset + - sgot->output_section->vma); + break; + + case R_CRIS_8_PCREL: + case R_CRIS_16_PCREL: + case R_CRIS_32_PCREL: + /* If the symbol was local, we need no shlib-specific handling. */ + if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT + || h->dynindx == -1) + break; + + /* Fall through. */ + case R_CRIS_8: + case R_CRIS_16: + case R_CRIS_32: + if (info->shared + && r_symndx != STN_UNDEF + && (input_section->flags & SEC_ALLOC) != 0 + && ((r_type != R_CRIS_8_PCREL + && r_type != R_CRIS_16_PCREL + && r_type != R_CRIS_32_PCREL) + || (!info->symbolic + || (h != NULL && !h->def_regular)))) + { + Elf_Internal_Rela outrel; + bfd_byte *loc; + bfd_boolean skip, relocate; + + /* When generating a shared object, these relocations + are copied into the output file to be resolved at run + time. */ + + if (sreloc == NULL) + { + sreloc = _bfd_elf_get_dynamic_reloc_section + (dynobj, input_section, /*rela?*/ TRUE); + /* The section should have been created in cris_elf_check_relocs, + but that function will not be called for objects which fail in + cris_elf_merge_private_bfd_data. */ + if (sreloc == NULL) + { + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + } + + skip = FALSE; + relocate = FALSE; + + outrel.r_offset = + _bfd_elf_section_offset (output_bfd, info, input_section, + rel->r_offset); + if (outrel.r_offset == (bfd_vma) -1) + skip = TRUE; + else if (outrel.r_offset == (bfd_vma) -2 + /* For now, undefined weak symbols with non-default + visibility (yielding 0), like exception info for + discarded sections, will get a R_CRIS_NONE + relocation rather than no relocation, because we + notice too late that the symbol doesn't need a + relocation. */ + || (h != NULL + && h->root.type == bfd_link_hash_undefweak + && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)) + skip = TRUE, relocate = TRUE; + outrel.r_offset += (input_section->output_section->vma + + input_section->output_offset); + + if (skip) + memset (&outrel, 0, sizeof outrel); + /* h->dynindx may be -1 if the symbol was marked to + become local. */ + else if (h != NULL + && ((! info->symbolic && h->dynindx != -1) + || !h->def_regular)) + { + BFD_ASSERT (h->dynindx != -1); + outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); + outrel.r_addend = relocation + rel->r_addend; + } + else + { + outrel.r_addend = relocation + rel->r_addend; + + if (r_type == R_CRIS_32) + { + relocate = TRUE; + outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); + } + else + { + long indx; + + if (bfd_is_abs_section (sec)) + indx = 0; + else if (sec == NULL || sec->owner == NULL) + { + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + else + { + asection *osec; + + /* We are turning this relocation into one + against a section symbol. It would be + proper to subtract the symbol's value, + osec->vma, from the emitted reloc addend, + but ld.so expects buggy relocs. */ + osec = sec->output_section; + indx = elf_section_data (osec)->dynindx; + if (indx == 0) + { + osec = htab->root.text_index_section; + indx = elf_section_data (osec)->dynindx; + } + BFD_ASSERT (indx != 0); + } + + outrel.r_info = ELF32_R_INFO (indx, r_type); + } + } + + loc = sreloc->contents; + loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); + + /* This reloc will be computed at runtime, so there's no + need to do anything now, except for R_CRIS_32 relocations + that have been turned into R_CRIS_RELATIVE. */ + if (!relocate) + continue; + } + + break; + + case R_CRIS_16_DTPREL: + case R_CRIS_32_DTPREL: + /* This relocation must only be performed against local + symbols, or to sections that are not loadable. It's also + ok when we link a program and the symbol is defined in an + ordinary (non-DSO) object (if it's undefined there, we've + already seen an error). */ + if (h != NULL + && (input_section->flags & SEC_ALLOC) != 0 + && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT + && (info->shared + || (!h->def_regular + && h->root.type != bfd_link_hash_undefined))) + { + (*_bfd_error_handler) + ((h->root.type == bfd_link_hash_undefined) + /* We shouldn't get here for GCC-emitted code. */ + ? _("%B, section %A: relocation %s has an undefined" + " reference to `%s', perhaps a declaration mixup?") + : ("%B, section %A: relocation %s is" + " not allowed for `%s', a global symbol with default" + " visibility, perhaps a declaration mixup?"), + input_bfd, + input_section, + cris_elf_howto_table[r_type].name, + symname != NULL && symname[0] != '\0' + ? symname : _("[whose name is lost]")); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0 + || htab->dtpmod_refcount != 0); + + /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't + already done so. Note that we do this in .got.plt, not + in .got, as .got.plt contains the first part, still the + reloc is against .got, because the linker script directs + (is required to direct) them both into .got. */ + if (htab->dtpmod_refcount > 0 + && (input_section->flags & SEC_ALLOC) != 0) + { + asection *sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); + BFD_ASSERT (sgotplt != NULL); + + if (info->shared) + { + Elf_Internal_Rela outrel; + bfd_byte *loc; + + if (srelgot == NULL) + srelgot = bfd_get_linker_section (dynobj, ".rela.got"); + BFD_ASSERT (srelgot != NULL); + loc = srelgot->contents; + loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); + + bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12); + bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16); + outrel.r_offset = (sgotplt->output_section->vma + + sgotplt->output_offset + + 12); + outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD); + outrel.r_addend = 0; + bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); + } + else + { + /* For an executable, the GOT entry contents is known. */ + bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12); + bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16); + } + + /* Reverse the sign to mark that we've emitted the + required GOT entry. */ + htab->dtpmod_refcount = - htab->dtpmod_refcount; + } + + /* The relocation is the offset from the start of the module + TLS block to the (local) symbol. */ + relocation -= elf_hash_table (info)->tls_sec == NULL + ? 0 : elf_hash_table (info)->tls_sec->vma; + break; + + case R_CRIS_32_GD: + if (info->shared) + { + bfd_set_error (bfd_error_invalid_operation); + + /* We've already informed in cris_elf_check_relocs that + this is an error. */ + return FALSE; + } + /* Fall through. */ + + case R_CRIS_16_GOT_GD: + case R_CRIS_32_GOT_GD: + if (rel->r_addend != 0) + { + /* We can't do anything for a relocation which is against a + symbol *plus offset*. The GOT holds relocations for + symbols. Make this an error; the compiler isn't allowed + to pass us these kinds of things. */ + (*_bfd_error_handler) + (_("%B, section %A: relocation %s with non-zero addend %d" + " against symbol `%s'"), + input_bfd, + input_section, + cris_elf_howto_table[r_type].name, + rel->r_addend, + symname[0] != '\0' ? symname : _("[whose name is lost]")); + + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + if (!info->shared + && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h))) + { + /* Known contents of the GOT. */ + bfd_vma off; + + /* The symbol is defined in the program, so just write + (1, known_tpoffset) into the GOT. */ + relocation -= elf_hash_table (info)->tls_sec->vma; + + if (h != NULL) + { + off = elf_cris_hash_entry (h)->tprel_refcount > 0 + ? h->got.offset + 4 : h->got.offset; + } + else + { + off = local_got_offsets[r_symndx]; + if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)]) + off += 4; + } + + /* We use bit 1 of the offset as a flag for GOT entry with + the R_CRIS_DTP reloc, setting it when we've emitted the + GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL + relocs. */ + if ((off & 2) == 0) + { + off &= ~3; + + if (h != NULL) + h->got.offset |= 2; + else + local_got_offsets[r_symndx] |= 2; + + bfd_put_32 (output_bfd, 1, sgot->contents + off); + bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4); + } + else + off &= ~3; + + relocation = sgot->output_offset + off + + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0); + } + else + { + /* Not all parts of the GOT entry are known; emit a real + relocation. */ + bfd_vma off; + + if (h != NULL) + off = elf_cris_hash_entry (h)->tprel_refcount > 0 + ? h->got.offset + 4 : h->got.offset; + else + { + off = local_got_offsets[r_symndx]; + if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)]) + off += 4; + } + + /* See above re bit 1 and bit 0 usage. */ + if ((off & 2) == 0) + { + Elf_Internal_Rela outrel; + bfd_byte *loc; + + off &= ~3; + + if (h != NULL) + h->got.offset |= 2; + else + local_got_offsets[r_symndx] |= 2; + + /* Clear the target contents of the GOT (just as a + gesture; it's already cleared on allocation): this + relocation is not like the other dynrelocs. */ + bfd_put_32 (output_bfd, 0, sgot->contents + off); + bfd_put_32 (output_bfd, 0, sgot->contents + off + 4); + + if (srelgot == NULL) + srelgot = bfd_get_linker_section (dynobj, ".rela.got"); + BFD_ASSERT (srelgot != NULL); + + if (h != NULL && h->dynindx != -1) + { + outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP); + relocation = 0; + } + else + { + outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP); + + /* NULL if we had an error. */ + relocation -= elf_hash_table (info)->tls_sec == NULL + ? 0 : elf_hash_table (info)->tls_sec->vma; + } + + outrel.r_offset = (sgot->output_section->vma + + sgot->output_offset + + off); + outrel.r_addend = relocation; + loc = srelgot->contents; + loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); + + /* NULL if we had an error. */ + if (srelgot->contents != NULL) + bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); + } + else + off &= ~3; + + relocation = sgot->output_offset + off + + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0); + } + + /* The GOT-relative offset to the GOT entry is the + relocation, or for R_CRIS_32_GD, the actual address of + the GOT entry. */ + break; + + case R_CRIS_32_IE: + if (info->shared) + { + bfd_set_error (bfd_error_invalid_operation); + + /* We've already informed in cris_elf_check_relocs that + this is an error. */ + return FALSE; + } + /* Fall through. */ + + case R_CRIS_32_GOT_TPREL: + case R_CRIS_16_GOT_TPREL: + if (rel->r_addend != 0) + { + /* We can't do anything for a relocation which is + against a symbol *plus offset*. GOT holds + relocations for symbols. Make this an error; the + compiler isn't allowed to pass us these kinds of + things. */ + (*_bfd_error_handler) + (_("%B, section %A: relocation %s with non-zero addend %d" + " against symbol `%s'"), + input_bfd, + input_section, + cris_elf_howto_table[r_type].name, + rel->r_addend, + symname[0] != '\0' ? symname : _("[whose name is lost]")); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + if (!info->shared + && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h))) + { + /* Known contents of the GOT. */ + bfd_vma off; + + /* The symbol is defined in the program, so just write + the -prog_tls_size+known_tpoffset into the GOT. */ + relocation -= elf_hash_table (info)->tls_sec->vma; + relocation -= elf_hash_table (info)->tls_size; + + if (h != NULL) + off = h->got.offset; + else + off = local_got_offsets[r_symndx]; + + /* Bit 0 is used to mark whether we've emitted the required + entry (and if needed R_CRIS_32_TPREL reloc). Bit 1 + is used similarly for R_CRIS_DTP, see above. */ + if ((off & 1) == 0) + { + off &= ~3; + + if (h != NULL) + h->got.offset |= 1; + else + local_got_offsets[r_symndx] |= 1; + + bfd_put_32 (output_bfd, relocation, sgot->contents + off); + } + else + off &= ~3; + + relocation = sgot->output_offset + off + + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0); + } + else + { + /* Emit a real relocation. */ + bfd_vma off; + + if (h != NULL) + off = h->got.offset; + else + off = local_got_offsets[r_symndx]; + + /* See above re usage of bit 0 and 1. */ + if ((off & 1) == 0) + { + Elf_Internal_Rela outrel; + bfd_byte *loc; + + off &= ~3; + + if (h != NULL) + h->got.offset |= 1; + else + local_got_offsets[r_symndx] |= 1; + + if (srelgot == NULL) + srelgot = bfd_get_linker_section (dynobj, ".rela.got"); + BFD_ASSERT (srelgot != NULL); + + if (h != NULL && h->dynindx != -1) + { + outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL); + relocation = 0; + } + else + { + outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL); + + /* NULL if we had an error. */ + relocation -= elf_hash_table (info)->tls_sec == NULL + ? 0 : elf_hash_table (info)->tls_sec->vma; + } + + /* Just "define" the initial contents in some + semi-logical way. */ + bfd_put_32 (output_bfd, relocation, sgot->contents + off); + + outrel.r_offset = (sgot->output_section->vma + + sgot->output_offset + + off); + outrel.r_addend = relocation; + loc = srelgot->contents; + loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela); + /* NULL if we had an error. */ + if (srelgot->contents != NULL) + bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); + } + else + off &= ~3; + + relocation = sgot->output_offset + off + + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0); + } + + /* The GOT-relative offset to the GOT entry is the relocation, + or for R_CRIS_32_GD, the actual address of the GOT entry. */ + break; + + case R_CRIS_16_TPREL: + case R_CRIS_32_TPREL: + /* This relocation must only be performed against symbols + defined in an ordinary (non-DSO) object. */ + if (info->shared) + { + bfd_set_error (bfd_error_invalid_operation); + + /* We've already informed in cris_elf_check_relocs that + this is an error. */ + return FALSE; + } + + if (h != NULL + && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT + && !(h->def_regular || ELF_COMMON_DEF_P (h)) + /* If it's undefined, then an error message has already + been emitted. */ + && h->root.type != bfd_link_hash_undefined) + { + (*_bfd_error_handler) + (_("%B, section %A: relocation %s is" + " not allowed for symbol: `%s'" + " which is defined outside the program," + " perhaps a declaration mixup?"), + input_bfd, + input_section, + cris_elf_howto_table[r_type].name, + symname); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + /* NULL if we had an error. */ + relocation -= elf_hash_table (info)->tls_sec == NULL + ? 0 + : (elf_hash_table (info)->tls_sec->vma + + elf_hash_table (info)->tls_size); + + /* The TLS-relative offset is the relocation. */ + break; + + default: + BFD_FAIL (); + return FALSE; + } + + r = cris_final_link_relocate (howto, input_bfd, input_section, + contents, rel, relocation); + + if (r != bfd_reloc_ok) + { + const char * msg = (const char *) NULL; + + switch (r) + { + case bfd_reloc_overflow: + r = info->callbacks->reloc_overflow + (info, (h ? &h->root : NULL), symname, howto->name, + (bfd_vma) 0, input_bfd, input_section, rel->r_offset); + if (additional_relocation_error_msg_count > 0) + { + additional_relocation_error_msg_count--; + switch (r_type) + { + case R_CRIS_16_GOTPLT: + case R_CRIS_16_GOT: + + /* Not just TLS is involved here, so we make + generation and message depend on -fPIC/-fpic + only. */ + case R_CRIS_16_GOT_TPREL: + case R_CRIS_16_GOT_GD: + (*_bfd_error_handler) + (_("(too many global variables for -fpic:" + " recompile with -fPIC)")); + break; + + case R_CRIS_16_TPREL: + case R_CRIS_16_DTPREL: + (*_bfd_error_handler) + (_("(thread-local data too big for -fpic or" + " -msmall-tls: recompile with -fPIC or" + " -mno-small-tls)")); + break; + + /* No known cause for overflow for other relocs. */ + default: + break; + } + } + break; + + case bfd_reloc_undefined: + r = info->callbacks->undefined_symbol + (info, symname, 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, symname, input_bfd, input_section, rel->r_offset); + + if (! r) + return FALSE; + } + } + + return TRUE; +} + +/* Finish up dynamic symbol handling. We set the contents of various + dynamic sections here. */ + +static bfd_boolean +elf_cris_finish_dynamic_symbol (bfd *output_bfd, + struct bfd_link_info *info, + struct elf_link_hash_entry *h, + Elf_Internal_Sym *sym) +{ + struct elf_cris_link_hash_table * htab; + bfd *dynobj; + + /* Where in the plt entry to put values. */ + int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16; + + /* What offset to add to the distance to the first PLT entry for the + value at plt_off3. */ + int plt_off3_value_bias = 4; + + /* Where in the PLT entry the call-dynlink-stub is (happens to be same + for PIC and non-PIC for v32 and pre-v32). */ + int plt_stub_offset = 8; + int plt_entry_size = PLT_ENTRY_SIZE; + const bfd_byte *plt_entry = elf_cris_plt_entry; + const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry; + + htab = elf_cris_hash_table (info); + if (htab == NULL) + return FALSE; + + /* Adjust the various PLT entry offsets. */ + if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) + { + plt_off2 = 14; + plt_off3 = 20; + plt_off3_value_bias = -2; + plt_stub_offset = 12; + plt_entry_size = PLT_ENTRY_SIZE_V32; + plt_entry = elf_cris_plt_entry_v32; + plt_pic_entry = elf_cris_pic_plt_entry_v32; + } + + dynobj = elf_hash_table (info)->dynobj; + + if (h->plt.offset != (bfd_vma) -1) + { + asection *splt; + asection *sgotplt; + asection *srela; + bfd_vma got_base; + + bfd_vma gotplt_offset + = elf_cris_hash_entry (h)->gotplt_offset; + Elf_Internal_Rela rela; + bfd_byte *loc; + bfd_boolean has_gotplt = gotplt_offset != 0; + + /* Get the index in the .rela.plt relocations for the .got.plt + entry that corresponds to this symbol. + We have to count backwards here, and the result is only valid + as an index into .rela.plt. We also have to undo the effect + of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into + .got.plt) for which gotplt_offset is adjusted, because while + that entry goes into .got.plt, its relocation goes into + .rela.got, not .rela.plt. (It's not PLT-specific; not to be + processed as part of the runtime lazy .rela.plt relocation). + FIXME: There be literal constants here... */ + bfd_vma rela_plt_index + = (htab->dtpmod_refcount != 0 + ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3); + + /* Get the offset into the .got table of the entry that corresponds + to this function. Note that we embed knowledge that "incoming" + .got goes after .got.plt in the output without padding (pointer + aligned). However, that knowledge is present in several other + places too. */ + bfd_vma got_offset + = (has_gotplt + ? gotplt_offset + : h->got.offset + htab->next_gotplt_entry); + + /* This symbol has an entry in the procedure linkage table. Set it + up. */ + + BFD_ASSERT (h->dynindx != -1); + + splt = bfd_get_linker_section (dynobj, ".plt"); + sgotplt = bfd_get_linker_section (dynobj, ".got.plt"); + srela = bfd_get_linker_section (dynobj, ".rela.plt"); + BFD_ASSERT (splt != NULL && sgotplt != NULL + && (! has_gotplt || srela != NULL)); + + got_base = sgotplt->output_section->vma + sgotplt->output_offset; + + /* Fill in the entry in the procedure linkage table. */ + if (! info->shared) + { + memcpy (splt->contents + h->plt.offset, plt_entry, + plt_entry_size); + + /* We need to enter the absolute address of the GOT entry here. */ + bfd_put_32 (output_bfd, got_base + got_offset, + splt->contents + h->plt.offset + plt_off1); + } + else + { + memcpy (splt->contents + h->plt.offset, plt_pic_entry, + plt_entry_size); + bfd_put_32 (output_bfd, got_offset, + splt->contents + h->plt.offset + plt_off1); + } + + /* Fill in the plt entry and make a relocation, if this is a "real" + PLT entry. */ + if (has_gotplt) + { + /* Fill in the offset to the reloc table. */ + bfd_put_32 (output_bfd, + rela_plt_index * sizeof (Elf32_External_Rela), + splt->contents + h->plt.offset + plt_off2); + + /* Fill in the offset to the first PLT entry, where to "jump". */ + bfd_put_32 (output_bfd, + - (h->plt.offset + plt_off3 + plt_off3_value_bias), + splt->contents + h->plt.offset + plt_off3); + + /* Fill in the entry in the global offset table with the address of + the relocating stub. */ + bfd_put_32 (output_bfd, + (splt->output_section->vma + + splt->output_offset + + h->plt.offset + + plt_stub_offset), + sgotplt->contents + got_offset); + + /* Fill in the entry in the .rela.plt section. */ + rela.r_offset = (sgotplt->output_section->vma + + sgotplt->output_offset + + got_offset); + rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT); + rela.r_addend = 0; + loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); + } + + if (!h->def_regular) + { + /* Mark the symbol as undefined, rather than as defined in + the .plt section. Leave the value alone. */ + sym->st_shndx = SHN_UNDEF; + + /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't + know whether resetting the value is significant; if it really + is, rather than a quirk or bug in the sparc port, then I + believe we'd see this elsewhere. */ + /* If the symbol is weak, we do need to clear the value. + Otherwise, the PLT entry would provide a definition for + the symbol even if the symbol wasn't defined anywhere, + and so the symbol would never be NULL. */ + if (!h->ref_regular_nonweak) + sym->st_value = 0; + } + } + + /* For an ordinary program, we emit .got relocs only for symbols that + are in the dynamic-symbols table and are either defined by the + program or are undefined weak symbols, or are function symbols + where we do not output a PLT: the PLT reloc was output above and all + references to the function symbol are redirected to the PLT. */ + if (h->got.offset != (bfd_vma) -1 + && (elf_cris_hash_entry (h)->reg_got_refcount > 0) + && (info->shared + || (h->dynindx != -1 + && h->plt.offset == (bfd_vma) -1 + && !h->def_regular + && h->root.type != bfd_link_hash_undefweak))) + { + asection *sgot; + asection *srela; + Elf_Internal_Rela rela; + bfd_byte *loc; + bfd_byte *where; + + /* This symbol has an entry in the global offset table. Set it up. */ + + sgot = bfd_get_linker_section (dynobj, ".got"); + srela = bfd_get_linker_section (dynobj, ".rela.got"); + BFD_ASSERT (sgot != NULL && srela != NULL); + + rela.r_offset = (sgot->output_section->vma + + sgot->output_offset + + (h->got.offset &~ (bfd_vma) 1)); + + /* If this is a static link, or it is a -Bsymbolic link and the + symbol is defined locally or was forced to be local because + of a version file, we just want to emit a RELATIVE reloc. + The entry in the global offset table will already have been + initialized in the relocate_section function. */ + where = sgot->contents + (h->got.offset &~ (bfd_vma) 1); + if (! elf_hash_table (info)->dynamic_sections_created + || (info->shared + && (info->symbolic || h->dynindx == -1) + && h->def_regular)) + { + rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE); + rela.r_addend = bfd_get_signed_32 (output_bfd, where); + } + else + { + bfd_put_32 (output_bfd, (bfd_vma) 0, where); + rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT); + rela.r_addend = 0; + } + + loc = srela->contents; + loc += srela->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); + } + + if (h->needs_copy) + { + asection *s; + Elf_Internal_Rela rela; + bfd_byte *loc; + + /* This symbol needs a copy reloc. Set it up. */ + + BFD_ASSERT (h->dynindx != -1 + && (h->root.type == bfd_link_hash_defined + || h->root.type == bfd_link_hash_defweak)); + + s = bfd_get_linker_section (dynobj, ".rela.bss"); + BFD_ASSERT (s != NULL); + + rela.r_offset = (h->root.u.def.value + + h->root.u.def.section->output_section->vma + + h->root.u.def.section->output_offset); + rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY); + rela.r_addend = 0; + loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela); + bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); + } + + /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ + if (h == elf_hash_table (info)->hdynamic + || h == elf_hash_table (info)->hgot) + sym->st_shndx = SHN_ABS; + + return TRUE; +} + +/* Finish up the dynamic sections. Do *not* emit relocs here, as their + offsets were changed, as part of -z combreloc handling, from those we + computed. */ + +static bfd_boolean +elf_cris_finish_dynamic_sections (bfd *output_bfd, + struct bfd_link_info *info) +{ + bfd *dynobj; + asection *sgot; + asection *sdyn; + + dynobj = elf_hash_table (info)->dynobj; + + sgot = bfd_get_linker_section (dynobj, ".got.plt"); + BFD_ASSERT (sgot != NULL); + sdyn = bfd_get_linker_section (dynobj, ".dynamic"); + + if (elf_hash_table (info)->dynamic_sections_created) + { + asection *splt; + Elf32_External_Dyn *dyncon, *dynconend; + + splt = bfd_get_linker_section (dynobj, ".plt"); + BFD_ASSERT (splt != NULL && sdyn != NULL); + + dyncon = (Elf32_External_Dyn *) sdyn->contents; + dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); + for (; dyncon < dynconend; dyncon++) + { + Elf_Internal_Dyn dyn; + asection *s; + + bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); + + switch (dyn.d_tag) + { + default: + break; + + case DT_PLTGOT: + s = bfd_get_section_by_name (output_bfd, ".got"); + BFD_ASSERT (s != NULL); + dyn.d_un.d_ptr = s->vma; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_JMPREL: + /* Yes, we *can* have a .plt and no .plt.rela, for instance + if all symbols are found in the .got (not .got.plt). */ + s = bfd_get_section_by_name (output_bfd, ".rela.plt"); + dyn.d_un.d_ptr = s != NULL ? s->vma : 0; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_PLTRELSZ: + s = bfd_get_section_by_name (output_bfd, ".rela.plt"); + if (s == NULL) + dyn.d_un.d_val = 0; + else + dyn.d_un.d_val = s->size; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + + case DT_RELASZ: + /* The procedure linkage table relocs (DT_JMPREL) should + not be included in the overall relocs (DT_RELA). + Therefore, we override the DT_RELASZ entry here to + make it not include the JMPREL relocs. Since the + linker script arranges for .rela.plt to follow all + other relocation sections, we don't have to worry + about changing the DT_RELA entry. */ + s = bfd_get_section_by_name (output_bfd, ".rela.plt"); + if (s != NULL) + dyn.d_un.d_val -= s->size; + bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); + break; + } + } + + /* Fill in the first entry in the procedure linkage table. */ + if (splt->size > 0) + { + if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32) + { + if (info->shared) + memcpy (splt->contents, elf_cris_pic_plt0_entry_v32, + PLT_ENTRY_SIZE_V32); + else + { + memcpy (splt->contents, elf_cris_plt0_entry_v32, + PLT_ENTRY_SIZE_V32); + bfd_put_32 (output_bfd, + sgot->output_section->vma + + sgot->output_offset + 4, + splt->contents + 4); + + elf_section_data (splt->output_section)->this_hdr.sh_entsize + = PLT_ENTRY_SIZE_V32; + } + } + else + { + if (info->shared) + memcpy (splt->contents, elf_cris_pic_plt0_entry, + PLT_ENTRY_SIZE); + else + { + memcpy (splt->contents, elf_cris_plt0_entry, + PLT_ENTRY_SIZE); + bfd_put_32 (output_bfd, + sgot->output_section->vma + + sgot->output_offset + 4, + splt->contents + 6); + bfd_put_32 (output_bfd, + sgot->output_section->vma + + sgot->output_offset + 8, + splt->contents + 14); + + elf_section_data (splt->output_section)->this_hdr.sh_entsize + = PLT_ENTRY_SIZE; + } + } + } + } + + /* Fill in the first three entries in the global offset table. */ + if (sgot->size > 0) + { + if (sdyn == NULL) + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); + else + bfd_put_32 (output_bfd, + sdyn->output_section->vma + sdyn->output_offset, + sgot->contents); + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); + bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); + } + + elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; + + return TRUE; +} + +/* Return the section that should be marked against GC for a given + relocation. */ + +static asection * +cris_elf_gc_mark_hook (asection *sec, + struct bfd_link_info *info, + Elf_Internal_Rela *rel, + struct elf_link_hash_entry *h, + Elf_Internal_Sym *sym) +{ + enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info); + if (h != NULL) + switch (r_type) + { + case R_CRIS_GNU_VTINHERIT: + case R_CRIS_GNU_VTENTRY: + return NULL; + + default: + break; + } + + return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); +} + +/* Update the got entry reference counts for the section being removed. */ + +static bfd_boolean +cris_elf_gc_sweep_hook (bfd *abfd, + struct bfd_link_info *info, + asection *sec, + const Elf_Internal_Rela *relocs) +{ + struct elf_cris_link_hash_table * htab; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + const Elf_Internal_Rela *rel, *relend; + bfd *dynobj; + asection *sgot; + asection *srelgot; + + if (info->relocatable) + return TRUE; + + dynobj = elf_hash_table (info)->dynobj; + if (dynobj == NULL) + return TRUE; + + htab = elf_cris_hash_table (info); + if (htab == NULL) + return FALSE; + + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_refcounts (abfd); + + sgot = bfd_get_linker_section (dynobj, ".got"); + srelgot = bfd_get_linker_section (dynobj, ".rela.got"); + + relend = relocs + sec->reloc_count; + for (rel = relocs; rel < relend; rel++) + { + unsigned long r_symndx; + struct elf_link_hash_entry *h = NULL; + bfd_signed_vma got_element_size = 4; + bfd_signed_vma *specific_refcount = NULL; + enum elf_cris_reloc_type r_type; + + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx >= symtab_hdr->sh_info) + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + 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; + } + + r_type = ELF32_R_TYPE (rel->r_info); + switch (r_type) + { + case R_CRIS_32_GOT: + case R_CRIS_16_GOT: + case R_CRIS_16_GOTPLT: + case R_CRIS_32_GOTPLT: + specific_refcount = h != NULL + ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount + : &local_got_refcounts[LGOT_REG_NDX (r_symndx)]; + break; + + case R_CRIS_32_GD: + case R_CRIS_32_GOT_GD: + case R_CRIS_16_GOT_GD: + got_element_size = 8; + specific_refcount = h != NULL + ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount + : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)]; + break; + + case R_CRIS_32_IE: + case R_CRIS_16_GOT_TPREL: + case R_CRIS_32_GOT_TPREL: + specific_refcount = h != NULL + ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount + : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)]; + break; + + default: + break; + } + + switch (r_type) + { + case R_CRIS_32_IE: + case R_CRIS_32_GD: + case R_CRIS_16_GOT_TPREL: + case R_CRIS_32_GOT_TPREL: + case R_CRIS_32_GOT_GD: + case R_CRIS_16_GOT_GD: + case R_CRIS_16_GOT: + case R_CRIS_32_GOT: + if (h != NULL) + { + /* If the counters are 0 when we got here, we've + miscounted somehow somewhere, an internal error. */ + BFD_ASSERT (h->got.refcount > 0); + --h->got.refcount; + + BFD_ASSERT (*specific_refcount > 0); + --*specific_refcount; + if (*specific_refcount == 0) + { + /* We don't need the .got entry any more. */ + sgot->size -= got_element_size; + srelgot->size -= sizeof (Elf32_External_Rela); + } + break; + } + + local_got_reloc: + if (local_got_refcounts != NULL) + { + /* If the counters are 0 when we got here, we've + miscounted somehow somewhere, an internal error. */ + BFD_ASSERT (local_got_refcounts[r_symndx] > 0); + --local_got_refcounts[r_symndx]; + + BFD_ASSERT (*specific_refcount > 0); + --*specific_refcount; + if (*specific_refcount == 0) + { + /* We don't need the .got entry any more. */ + sgot->size -= got_element_size; + if (info->shared) + srelgot->size -= sizeof (Elf32_External_Rela); + } + } + break; + + case R_CRIS_16_GOTPLT: + case R_CRIS_32_GOTPLT: + /* For local symbols, treat these like GOT relocs. */ + if (h == NULL) + goto local_got_reloc; + else + /* For global symbols, adjust the reloc-specific refcount. */ + elf_cris_hash_entry (h)->gotplt_refcount--; + /* Fall through. */ + + case R_CRIS_32_PLT_GOTREL: + /* FIXME: We don't garbage-collect away the .got section. */ + if (local_got_refcounts != NULL) + local_got_refcounts[-1]--; + /* Fall through. */ + + case R_CRIS_8: + case R_CRIS_16: + case R_CRIS_32: + case R_CRIS_8_PCREL: + case R_CRIS_16_PCREL: + case R_CRIS_32_PCREL: + case R_CRIS_32_PLT_PCREL: + /* Negate the increment we did in cris_elf_check_relocs. */ + if (h != NULL) + { + if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT + && h->plt.refcount > 0) + --h->plt.refcount; + } + break; + + case R_CRIS_32_DTPREL: + /* This'd be a .dtpreld entry in e.g. debug info. */ + if ((sec->flags & SEC_ALLOC) == 0) + break; + /* Fall through. */ + case R_CRIS_16_DTPREL: + htab->dtpmod_refcount--; + if (htab->dtpmod_refcount == 0) + htab->next_gotplt_entry -= 8; + BFD_ASSERT (local_got_refcounts != NULL); + local_got_refcounts[-1]--; + break; + + default: + break; + } + } + + return TRUE; +} + +/* The elf_backend_plt_sym_val hook function. */ + +static bfd_vma +cris_elf_plt_sym_val (bfd_vma i ATTRIBUTE_UNUSED, const asection *plt, + const arelent *rel) +{ + bfd_size_type plt_entry_size; + bfd_size_type pltoffs; + bfd *abfd = plt->owner; + + /* Same for CRIS and CRIS v32; see elf_cris_(|pic_)plt_entry(|_v32)[]. */ + bfd_size_type plt_entry_got_offset = 2; + bfd_size_type plt_sec_size; + bfd_size_type got_vma_for_dyn; + asection *got; + + /* FIXME: the .got section should be readily available also when + we're not linking. */ + if ((got = bfd_get_section_by_name (abfd, ".got")) == NULL) + return (bfd_vma) -1; + + plt_sec_size = bfd_section_size (plt->owner, plt); + plt_entry_size + = (bfd_get_mach (abfd) == bfd_mach_cris_v32 + ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE); + + /* Data in PLT is GOT-relative for DYN, but absolute for EXE. */ + got_vma_for_dyn = (abfd->flags & EXEC_P) ? 0 : got->vma; + + /* Because we can have merged GOT entries; a single .got entry for + both GOT and the PLT part of the GOT (.got.plt), the index of the + reloc in .rela.plt is not the same as the index in the PLT. + Instead, we have to hunt down the GOT offset in the PLT that + corresponds to that of this reloc. Unfortunately, we will only + be called for the .rela.plt relocs, so we'll miss synthetic + symbols for .plt entries with merged GOT entries. (FIXME: + fixable by providing our own bfd_elf32_get_synthetic_symtab. + Doesn't seem worthwile at time of this writing.) FIXME: we've + gone from O(1) to O(N) (N number of PLT entries) for finding each + PLT address. Shouldn't matter in practice though. */ + + for (pltoffs = plt_entry_size; + pltoffs < plt_sec_size; + pltoffs += plt_entry_size) + { + bfd_size_type got_offset; + bfd_byte gotoffs_raw[4]; + + if (!bfd_get_section_contents (abfd, (asection *) plt, gotoffs_raw, + pltoffs + plt_entry_got_offset, + sizeof (gotoffs_raw))) + return (bfd_vma) -1; + + got_offset = bfd_get_32 (abfd, gotoffs_raw); + if (got_offset + got_vma_for_dyn == rel->address) + return plt->vma + pltoffs; + } + + /* While it's tempting to BFD_ASSERT that we shouldn't get here, + that'd not be graceful behavior for invalid input. */ + return (bfd_vma) -1; +} + +/* Make sure we emit a GOT entry if the symbol was supposed to have a PLT + entry but we found we will not create any. Called when we find we will + not have any PLT for this symbol, by for example + elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link, + or elf_cris_size_dynamic_sections if no dynamic sections will be + created (we're only linking static objects). */ + +static bfd_boolean +elf_cris_adjust_gotplt_to_got (struct elf_cris_link_hash_entry *h, void * p) +{ + struct bfd_link_info *info = (struct bfd_link_info *) p; + + /* A GOTPLT reloc, when activated, is supposed to be included into + the PLT refcount. */ + BFD_ASSERT (h->gotplt_refcount == 0 + || h->gotplt_refcount <= h->root.plt.refcount); + + /* If nobody wanted a GOTPLT with this symbol, we're done. */ + if (h->gotplt_refcount <= 0) + return TRUE; + + if (h->reg_got_refcount > 0) + { + /* There's a GOT entry for this symbol. Just adjust the refcounts. + Probably not necessary at this stage, but keeping them accurate + helps avoiding surprises later. */ + h->root.got.refcount += h->gotplt_refcount; + h->reg_got_refcount += h->gotplt_refcount; + h->gotplt_refcount = 0; + } + else + { + /* No GOT entry for this symbol. We need to create one. */ + bfd *dynobj = elf_hash_table (info)->dynobj; + asection *sgot; + asection *srelgot; + + BFD_ASSERT (dynobj != NULL); + sgot = bfd_get_linker_section (dynobj, ".got"); + srelgot = bfd_get_linker_section (dynobj, ".rela.got"); + + /* Put accurate refcounts there. */ + h->root.got.refcount += h->gotplt_refcount; + h->reg_got_refcount = h->gotplt_refcount; + + h->gotplt_refcount = 0; + + /* We always have a .got and a .rela.got section if there were + GOTPLT relocs in input. */ + BFD_ASSERT (sgot != NULL && srelgot != NULL); + + /* Allocate space in the .got section. */ + sgot->size += 4; + + /* Allocate relocation space. */ + srelgot->size += sizeof (Elf32_External_Rela); + } + + return TRUE; +} + +/* Try to fold PLT entries with GOT entries. There are two cases when we + want to do this: + + - When all PLT references are GOTPLT references, and there are GOT + references, and this is not the executable. We don't have to + generate a PLT at all. + + - When there are both (ordinary) PLT references and GOT references, + and this isn't the executable. + We want to make the PLT reference use the ordinary GOT entry rather + than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry, + since the GOT entry will have to be resolved at startup anyway. + + Though the latter case is handled when room for the PLT is allocated, + not here. + + By folding into the GOT, we may need a round-trip to a PLT in the + executable for calls, a loss in performance. Still, losing a + reloc is a win in size and at least in start-up time. + + Note that this function is called before symbols are forced local by + version scripts. The differing cases are handled by + elf_cris_hide_symbol. */ + +static bfd_boolean +elf_cris_try_fold_plt_to_got (struct elf_cris_link_hash_entry *h, void * p) +{ + struct bfd_link_info *info = (struct bfd_link_info *) p; + + /* If there are no GOT references for this symbol, we can't fold any + other reference so there's nothing to do. Likewise if there are no + PLT references; GOTPLT references included. */ + if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0) + return TRUE; + + /* GOTPLT relocs are supposed to be included into the PLT refcount. */ + BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount); + + if (h->gotplt_refcount == h->root.plt.refcount) + { + /* The only PLT references are GOTPLT references, and there are GOT + references. Convert PLT to GOT references. */ + if (! elf_cris_adjust_gotplt_to_got (h, info)) + return FALSE; + + /* Clear the PLT references, so no PLT will be created. */ + h->root.plt.offset = (bfd_vma) -1; + } + + return TRUE; +} + +/* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc + to use a GOT entry (and create one) rather than requiring a GOTPLT + entry. */ + +static void +elf_cris_hide_symbol (struct bfd_link_info *info, + struct elf_link_hash_entry *h, + bfd_boolean force_local) +{ + elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info); + + _bfd_elf_link_hash_hide_symbol (info, h, force_local); +} + +/* Adjust a symbol defined by a dynamic object and referenced by a + regular object. The current definition is in some section of the + dynamic object, but we're not including those sections. We have to + change the definition to something the rest of the link can + understand. */ + +static bfd_boolean +elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info, + struct elf_link_hash_entry *h) +{ + struct elf_cris_link_hash_table * htab; + bfd *dynobj; + asection *s; + bfd_size_type plt_entry_size; + + htab = elf_cris_hash_table (info); + if (htab == NULL) + return FALSE; + + dynobj = elf_hash_table (info)->dynobj; + + /* Make sure we know what is going on here. */ + BFD_ASSERT (dynobj != NULL + && (h->needs_plt + || h->u.weakdef != NULL + || (h->def_dynamic + && h->ref_regular + && !h->def_regular))); + + plt_entry_size + = (bfd_get_mach (dynobj) == bfd_mach_cris_v32 + ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE); + + /* If this is a function, put it in the procedure linkage table. We + will fill in the contents of the procedure linkage table later, + when we know the address of the .got section. */ + if (h->type == STT_FUNC + || h->needs_plt) + { + /* If we link a program (not a DSO), we'll get rid of unnecessary + PLT entries; we point to the actual symbols -- even for pic + relocs, because a program built with -fpic should have the same + result as one built without -fpic, specifically considering weak + symbols. + FIXME: m68k and i386 differ here, for unclear reasons. */ + if (! info->shared + && !h->def_dynamic) + { + /* This case can occur if we saw a PLT reloc in an input file, + but the symbol was not defined by a dynamic object. In such + a case, we don't actually need to build a procedure linkage + table, and we can just do an absolute or PC reloc instead, or + change a .got.plt index to a .got index for GOTPLT relocs. */ + BFD_ASSERT (h->needs_plt); + h->needs_plt = 0; + h->plt.offset = (bfd_vma) -1; + return + elf_cris_adjust_gotplt_to_got ((struct + elf_cris_link_hash_entry *) h, + info); + } + + /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT; + where a pointer-equivalent symbol was unimportant (i.e. more + like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid + of the PLT. We can't for the executable, because the GOT + entries will point to the PLT there (and be constant). */ + if (info->shared + && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*) + h, info)) + return FALSE; + + /* GC or folding may have rendered this entry unused. */ + if (h->plt.refcount <= 0) + { + h->needs_plt = 0; + h->plt.offset = (bfd_vma) -1; + return TRUE; + } + + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (! bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; + } + + s = bfd_get_linker_section (dynobj, ".plt"); + BFD_ASSERT (s != NULL); + + /* If this is the first .plt entry, make room for the special + first entry. */ + if (s->size == 0) + s->size += plt_entry_size; + + /* If this symbol is not defined in a regular file, and we are + not generating a shared library, then set the symbol to this + location in the .plt. */ + if (!info->shared + && !h->def_regular) + { + h->root.u.def.section = s; + h->root.u.def.value = s->size; + } + + /* If there's already a GOT entry, use that, not a .got.plt. A + GOT field still has a reference count when we get here; it's + not yet changed to an offset. We can't do this for an + executable, because then the reloc associated with the PLT + would get a non-PLT reloc pointing to the PLT. FIXME: Move + this to elf_cris_try_fold_plt_to_got. */ + if (info->shared && h->got.refcount > 0) + { + h->got.refcount += h->plt.refcount; + + /* Mark the PLT offset to use the GOT entry by setting the low + bit in the plt offset; it is always a multiple of + plt_entry_size (which is at least a multiple of 2). */ + BFD_ASSERT ((s->size % plt_entry_size) == 0); + + /* Change the PLT refcount to an offset. */ + h->plt.offset = s->size; + + /* By not setting gotplt_offset (i.e. it remains at 0), we signal + that the got entry should be used instead. */ + BFD_ASSERT (((struct elf_cris_link_hash_entry *) + h)->gotplt_offset == 0); + + /* Make room for this entry. */ + s->size += plt_entry_size; + + return TRUE; + } + + /* No GOT reference for this symbol; prepare for an ordinary PLT. */ + h->plt.offset = s->size; + + /* Make room for this entry. */ + s->size += plt_entry_size; + + /* We also need to make an entry in the .got.plt section, which + will be placed in the .got section by the linker script. */ + ((struct elf_cris_link_hash_entry *) h)->gotplt_offset + = htab->next_gotplt_entry; + htab->next_gotplt_entry += 4; + + s = bfd_get_linker_section (dynobj, ".got.plt"); + BFD_ASSERT (s != NULL); + s->size += 4; + + /* We also need to make an entry in the .rela.plt section. */ + + s = bfd_get_linker_section (dynobj, ".rela.plt"); + BFD_ASSERT (s != NULL); + s->size += sizeof (Elf32_External_Rela); + + return TRUE; + } + + /* Reinitialize the plt offset now that it is not used as a reference + count any more. */ + h->plt.offset = (bfd_vma) -1; + + /* If this is a weak symbol, and there is a real definition, the + processor independent code will have arranged for us to see the + real definition first, and we can just use the same value. */ + if (h->u.weakdef != NULL) + { + BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined + || h->u.weakdef->root.type == bfd_link_hash_defweak); + h->root.u.def.section = h->u.weakdef->root.u.def.section; + h->root.u.def.value = h->u.weakdef->root.u.def.value; + return TRUE; + } + + /* This is a reference to a symbol defined by a dynamic object which + is not a function. */ + + /* If we are creating a shared library, we must presume that the + only references to the symbol are via the global offset table. + For such cases we need not do anything here; the relocations will + be handled correctly by relocate_section. */ + if (info->shared) + return TRUE; + + /* If there are no references to this symbol that do not use the + GOT, we don't need to generate a copy reloc. */ + if (!h->non_got_ref) + return TRUE; + + /* We must allocate the symbol in our .dynbss section, which will + become part of the .bss section of the executable. There will be + an entry for this symbol in the .dynsym section. The dynamic + object will contain position independent code, so all references + from the dynamic object to this symbol will go through the global + offset table. The dynamic linker will use the .dynsym entry to + determine the address it must put in the global offset table, so + both the dynamic object and the regular object will refer to the + same memory location for the variable. */ + + s = bfd_get_linker_section (dynobj, ".dynbss"); + BFD_ASSERT (s != NULL); + + /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to + copy the initial value out of the dynamic object and into the + runtime process image. We need to remember the offset into the + .rela.bss section we are going to use. */ + if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0) + { + asection *srel; + + srel = bfd_get_linker_section (dynobj, ".rela.bss"); + BFD_ASSERT (srel != NULL); + srel->size += sizeof (Elf32_External_Rela); + h->needs_copy = 1; + } + + return _bfd_elf_adjust_dynamic_copy (h, s); +} + +/* Adjust our "subclass" elements for an indirect symbol. */ + +static void +elf_cris_copy_indirect_symbol (struct bfd_link_info *info, + struct elf_link_hash_entry *dir, + struct elf_link_hash_entry *ind) +{ + struct elf_cris_link_hash_entry *edir, *eind; + + edir = (struct elf_cris_link_hash_entry *) dir; + eind = (struct elf_cris_link_hash_entry *) ind; + + /* Only indirect symbols are replaced; we're not interested in + updating any of EIND's fields for other symbols. */ + if (eind->root.root.type != bfd_link_hash_indirect) + { + /* Still, we need to copy flags for e.g. weak definitions. */ + _bfd_elf_link_hash_copy_indirect (info, dir, ind); + return; + } + + BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0); + +#define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z +#define XMOVE(F) XMOVOPZ (F, +=, 0) + if (eind->pcrel_relocs_copied != NULL) + { + if (edir->pcrel_relocs_copied != NULL) + { + struct elf_cris_pcrel_relocs_copied **pp; + struct elf_cris_pcrel_relocs_copied *p; + + /* Add reloc counts against the indirect sym to the direct sym + list. Merge any entries against the same section. */ + for (pp = &eind->pcrel_relocs_copied; *pp != NULL;) + { + struct elf_cris_pcrel_relocs_copied *q; + p = *pp; + for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next) + if (q->section == p->section) + { + q->count += p->count; + *pp = p->next; + break; + } + if (q == NULL) + pp = &p->next; + } + *pp = edir->pcrel_relocs_copied; + } + XMOVOPZ (pcrel_relocs_copied, =, NULL); + } + XMOVE (gotplt_refcount); + XMOVE (gotplt_offset); + XMOVE (reg_got_refcount); + XMOVE (tprel_refcount); + XMOVE (dtp_refcount); +#undef XMOVE +#undef XMOVOPZ + + _bfd_elf_link_hash_copy_indirect (info, dir, ind); +} + +/* Look through the relocs for a section during the first phase. */ + +static bfd_boolean +cris_elf_check_relocs (bfd *abfd, + struct bfd_link_info *info, + asection *sec, + const Elf_Internal_Rela *relocs) +{ + struct elf_cris_link_hash_table * htab; + bfd *dynobj; + Elf_Internal_Shdr *symtab_hdr; + struct elf_link_hash_entry **sym_hashes; + bfd_signed_vma *local_got_refcounts; + const Elf_Internal_Rela *rel; + const Elf_Internal_Rela *rel_end; + asection *sgot; + asection *srelgot; + asection *sreloc; + + if (info->relocatable) + return TRUE; + + htab = elf_cris_hash_table (info); + if (htab == NULL) + return FALSE; + + dynobj = elf_hash_table (info)->dynobj; + symtab_hdr = &elf_tdata (abfd)->symtab_hdr; + sym_hashes = elf_sym_hashes (abfd); + local_got_refcounts = elf_local_got_refcounts (abfd); + + sgot = NULL; + srelgot = NULL; + sreloc = NULL; + + rel_end = relocs + sec->reloc_count; + for (rel = relocs; rel < rel_end; rel++) + { + struct elf_link_hash_entry *h; + unsigned long r_symndx; + enum elf_cris_reloc_type r_type; + bfd_signed_vma got_element_size = 4; + unsigned long r_symndx_lgot = INT_MAX; + + r_symndx = ELF32_R_SYM (rel->r_info); + if (r_symndx < symtab_hdr->sh_info) + { + h = NULL; + r_symndx_lgot = LGOT_REG_NDX (r_symndx); + } + else + { + h = sym_hashes[r_symndx - symtab_hdr->sh_info]; + 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; + + /* PR15323, ref flags aren't set for references in the same + object. */ + h->root.non_ir_ref = 1; + } + + r_type = ELF32_R_TYPE (rel->r_info); + + /* Some relocs require linker-created sections; we need to hang them + on the first input bfd we found that contained dynamic relocs. */ + switch (r_type) + { + case R_CRIS_32_DTPREL: + if ((sec->flags & SEC_ALLOC) == 0) + /* This'd be a .dtpreld entry in e.g. debug info. We have + several different switch statements below, but none of + that is needed; we need no preparations for resolving + R_CRIS_32_DTPREL into a non-allocated section (debug + info), so let's just move on to the next + relocation. */ + continue; + /* Fall through. */ + case R_CRIS_16_DTPREL: + /* The first .got.plt entry is right after the R_CRIS_DTPMOD + entry at index 3. */ + if (htab->dtpmod_refcount == 0) + htab->next_gotplt_entry += 8; + + htab->dtpmod_refcount++; + /* Fall through. */ + + case R_CRIS_32_IE: + case R_CRIS_32_GD: + case R_CRIS_16_GOT_GD: + case R_CRIS_32_GOT_GD: + case R_CRIS_32_GOT_TPREL: + case R_CRIS_16_GOT_TPREL: + case R_CRIS_16_GOT: + case R_CRIS_32_GOT: + case R_CRIS_32_GOTREL: + case R_CRIS_32_PLT_GOTREL: + case R_CRIS_32_PLT_PCREL: + case R_CRIS_16_GOTPLT: + case R_CRIS_32_GOTPLT: + if (dynobj == NULL) + { + elf_hash_table (info)->dynobj = dynobj = abfd; + + /* We could handle this if we can get a handle on the + output bfd in elf_cris_adjust_dynamic_symbol. Failing + that, we must insist on dynobj being a specific mach. */ + if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32) + { + (*_bfd_error_handler) + (_("%B, section %A:\n v10/v32 compatible object %s" + " must not contain a PIC relocation"), + abfd, sec); + return FALSE; + } + } + + if (sgot == NULL) + { + /* We may have a dynobj but no .got section, if machine- + independent parts of the linker found a reason to create + a dynobj. We want to create the .got section now, so we + can assume it's always present whenever there's a dynobj. + It's ok to call this function more than once. */ + if (!_bfd_elf_create_got_section (dynobj, info)) + return FALSE; + + sgot = bfd_get_linker_section (dynobj, ".got"); + } + + if (local_got_refcounts == NULL) + { + bfd_size_type amt; + + /* We use index local_got_refcounts[-1] to count all + GOT-relative relocations that do not have explicit + GOT entries. */ + amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1; + amt *= sizeof (bfd_signed_vma); + local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt)); + if (local_got_refcounts == NULL) + return FALSE; + + local_got_refcounts++; + elf_local_got_refcounts (abfd) = local_got_refcounts; + } + break; + + default: + break; + } + + /* Some relocs require a global offset table (but perhaps not a + specific GOT entry). */ + switch (r_type) + { + case R_CRIS_16_DTPREL: + case R_CRIS_32_DTPREL: + /* Not requesting .got.rela for an executable: the contents + of the first entry is constant there. For a shared + library, we need .got.rela for the R_CRIS_DTPMOD + relocation at index 3. */ + if (!info->shared) + break; + /* Fall through. */ + + case R_CRIS_32_IE: + case R_CRIS_32_GD: + case R_CRIS_16_GOT_GD: + case R_CRIS_32_GOT_GD: + case R_CRIS_32_GOT_TPREL: + case R_CRIS_16_GOT_TPREL: + /* Fall through. */ + + /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT + entry only for local symbols. Unfortunately, we don't know + until later on if there's a version script that forces the + symbol local. We must have the .rela.got section in place + before we know if the symbol looks global now, so we need + to treat the reloc just like for R_CRIS_16_GOT and + R_CRIS_32_GOT. */ + case R_CRIS_16_GOTPLT: + case R_CRIS_32_GOTPLT: + case R_CRIS_16_GOT: + case R_CRIS_32_GOT: + if (srelgot == NULL + && (h != NULL || info->shared)) + { + srelgot = bfd_get_linker_section (dynobj, ".rela.got"); + if (srelgot == NULL) + { + flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS + | SEC_IN_MEMORY | SEC_LINKER_CREATED + | SEC_READONLY); + srelgot = bfd_make_section_anyway_with_flags (dynobj, + ".rela.got", + flags); + if (srelgot == NULL + || !bfd_set_section_alignment (dynobj, srelgot, 2)) + return FALSE; + } + } + break; + + default: + break; + } + + /* Warn and error for invalid input. */ + switch (r_type) + { + case R_CRIS_32_IE: + case R_CRIS_32_TPREL: + case R_CRIS_16_TPREL: + case R_CRIS_32_GD: + if (info->shared) + { + (*_bfd_error_handler) + (_("%B, section %A:\n relocation %s not valid" + " in a shared object;" + " typically an option mixup, recompile with -fPIC"), + abfd, + sec, + cris_elf_howto_table[r_type].name); + /* Don't return FALSE here; we want messages for all of + these and the error behavior is ungraceful + anyway. */ + } + default: + break; + } + + switch (r_type) + { + case R_CRIS_32_GD: + case R_CRIS_16_GOT_GD: + case R_CRIS_32_GOT_GD: + /* These are requests for tls_index entries, run-time R_CRIS_DTP. */ + got_element_size = 8; + r_symndx_lgot = LGOT_DTP_NDX (r_symndx); + break; + + case R_CRIS_16_DTPREL: + case R_CRIS_32_DTPREL: + /* These two just request for the constant-index + module-local tls_index-sized GOT entry, which we add + elsewhere. */ + break; + + case R_CRIS_32_IE: + case R_CRIS_32_GOT_TPREL: + case R_CRIS_16_GOT_TPREL: + r_symndx_lgot = LGOT_TPREL_NDX (r_symndx); + + /* Those relocs also require that a DSO is of type + Initial Exec. Like other targets, we don't reset this + flag even if the relocs are GC:ed away. */ + if (info->shared) + info->flags |= DF_STATIC_TLS; + break; + + /* Let's list the other assembler-generated TLS-relocs too, + just to show that they're not forgotten. */ + case R_CRIS_16_TPREL: + case R_CRIS_32_TPREL: + default: + break; + } + + switch (r_type) + { + case R_CRIS_16_GOTPLT: + case R_CRIS_32_GOTPLT: + /* Mark that we need a GOT entry if the PLT entry (and its GOT + entry) is eliminated. We can only do this for a non-local + symbol. */ + if (h != NULL) + { + elf_cris_hash_entry (h)->gotplt_refcount++; + goto handle_gotplt_reloc; + } + /* If h is NULL then this is a local symbol, and we must make a + GOT entry for it, so handle it like a GOT reloc. */ + /* Fall through. */ + + case R_CRIS_32_IE: + case R_CRIS_32_GD: + case R_CRIS_16_GOT_GD: + case R_CRIS_32_GOT_GD: + case R_CRIS_32_GOT_TPREL: + case R_CRIS_16_GOT_TPREL: + case R_CRIS_16_GOT: + case R_CRIS_32_GOT: + /* This symbol requires a global offset table entry. */ + if (h != NULL) + { + if (h->got.refcount == 0) + { + /* Make sure this symbol is output as a dynamic symbol. */ + if (h->dynindx == -1) + { + if (!bfd_elf_link_record_dynamic_symbol (info, h)) + return FALSE; + } + } + + /* Update the sum of reloc counts for this symbol. */ + h->got.refcount++; + + switch (r_type) + { + case R_CRIS_16_GOT: + case R_CRIS_32_GOT: + if (elf_cris_hash_entry (h)->reg_got_refcount == 0) + { + /* Allocate space in the .got section. */ + sgot->size += got_element_size; + /* Allocate relocation space. */ + srelgot->size += sizeof (Elf32_External_Rela); + } + elf_cris_hash_entry (h)->reg_got_refcount++; + break; + + case R_CRIS_32_GD: + case R_CRIS_16_GOT_GD: + case R_CRIS_32_GOT_GD: + if (elf_cris_hash_entry (h)->dtp_refcount == 0) + { + /* Allocate space in the .got section. */ + sgot->size += got_element_size; + /* Allocate relocation space. */ + srelgot->size += sizeof (Elf32_External_Rela); + } + elf_cris_hash_entry (h)->dtp_refcount++; + break; + + case R_CRIS_32_IE: + case R_CRIS_32_GOT_TPREL: + case R_CRIS_16_GOT_TPREL: + if (elf_cris_hash_entry (h)->tprel_refcount == 0) + { + /* Allocate space in the .got section. */ + sgot->size += got_element_size; + /* Allocate relocation space. */ + srelgot->size += sizeof (Elf32_External_Rela); + } + elf_cris_hash_entry (h)->tprel_refcount++; + break; + + default: + BFD_FAIL (); + break; + } + } + else + { + /* This is a global offset table entry for a local symbol. */ + if (local_got_refcounts[r_symndx_lgot] == 0) + { + sgot->size += got_element_size; + if (info->shared) + { + /* If we are generating a shared object, we need + to output a R_CRIS_RELATIVE reloc so that the + dynamic linker can adjust this GOT entry. + Similarly for non-regular got entries. */ + srelgot->size += sizeof (Elf32_External_Rela); + } + } + /* Update the reloc-specific count. */ + local_got_refcounts[r_symndx_lgot]++; + + /* This one is the sum of all the others. */ + local_got_refcounts[r_symndx]++; + } + break; + + case R_CRIS_16_DTPREL: + case R_CRIS_32_DTPREL: + case R_CRIS_32_GOTREL: + /* This reference requires a global offset table. + FIXME: The actual refcount isn't used currently; the .got + section can't be removed if there were any references in the + input. */ + local_got_refcounts[-1]++; + break; + + handle_gotplt_reloc: + + case R_CRIS_32_PLT_GOTREL: + /* This reference requires a global offset table. */ + local_got_refcounts[-1]++; + /* Fall through. */ + + case R_CRIS_32_PLT_PCREL: + /* This symbol requires a procedure linkage table entry. We + actually build the entry in adjust_dynamic_symbol, + because this might be a case of linking PIC code which is + never referenced by a dynamic object, in which case we + don't need to generate a procedure linkage table entry + after all. */ + + /* Beware: if we'd check for visibility of the symbol here + (and not marking the need for a PLT when non-visible), we'd + get into trouble with keeping handling consistent with + regards to relocs found before definition and GOTPLT + handling. Eliminable PLT entries will be dealt with later + anyway. */ + if (h == NULL) + continue; + + h->needs_plt = 1; + h->plt.refcount++; + break; + + case R_CRIS_8: + case R_CRIS_16: + case R_CRIS_32: + /* Let's help debug shared library creation. Any of these + relocs *can* be used in shared libs, but pages containing + them cannot be shared, so they're not appropriate for + common use. Don't warn for sections we don't care about, + such as debug sections or non-constant sections. We + can't help tables of (global) function pointers, for + example, though they must be emitted in a (writable) data + section to avoid having impure text sections. */ + if (info->shared + && (sec->flags & SEC_ALLOC) != 0 + && (sec->flags & SEC_READONLY) != 0) + { + /* FIXME: How do we make this optionally a warning only? */ + (*_bfd_error_handler) + (_("%B, section %A:\n relocation %s should not" + " be used in a shared object; recompile with -fPIC"), + abfd, + sec, + cris_elf_howto_table[r_type].name); + } + + /* We don't need to handle relocs into sections not going into + the "real" output. */ + if ((sec->flags & SEC_ALLOC) == 0) + break; + + if (h != NULL) + { + h->non_got_ref = 1; + + /* Make sure a plt entry is created for this symbol if it + turns out to be a function defined by a dynamic object. */ + if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) + h->plt.refcount++; + } + + /* If we are creating a shared library and this is not a local + symbol, we need to copy the reloc into the shared library. + However when linking with -Bsymbolic and this is a global + symbol which is defined in an object we are including in the + link (i.e., DEF_REGULAR is set), then we can resolve the + reloc directly. At this point we have not seen all the input + files, so it is possible that DEF_REGULAR is not set now but + will be set later (it is never cleared). In case of a weak + definition, DEF_REGULAR may be cleared later by a strong + definition in a shared library. We account for that + possibility below by storing information in the relocs_copied + field of the hash table entry. A similar situation occurs + when creating shared libraries and symbol visibility changes + render the symbol local. */ + + /* No need to do anything if we're not creating a shared object. */ + if (! info->shared) + break; + + /* We may need to create a reloc section in the dynobj and made room + for this reloc. */ + if (sreloc == NULL) + { + sreloc = _bfd_elf_make_dynamic_reloc_section + (sec, dynobj, 2, abfd, /*rela?*/ TRUE); + + if (sreloc == NULL) + return FALSE; + } + + if (sec->flags & SEC_READONLY) + info->flags |= DF_TEXTREL; + + sreloc->size += sizeof (Elf32_External_Rela); + break; + + case R_CRIS_8_PCREL: + case R_CRIS_16_PCREL: + case R_CRIS_32_PCREL: + if (h != NULL) + { + h->non_got_ref = 1; + + /* Make sure a plt entry is created for this symbol if it + turns out to be a function defined by a dynamic object. */ + if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) + h->plt.refcount++; + } + + /* If we are creating a shared library and this is not a local + symbol, we need to copy the reloc into the shared library. + However when linking with -Bsymbolic and this is a global + symbol which is defined in an object we are including in the + link (i.e., DEF_REGULAR is set), then we can resolve the + reloc directly. At this point we have not seen all the input + files, so it is possible that DEF_REGULAR is not set now but + will be set later (it is never cleared). In case of a weak + definition, DEF_REGULAR may be cleared later by a strong + definition in a shared library. We account for that + possibility below by storing information in the relocs_copied + field of the hash table entry. A similar situation occurs + when creating shared libraries and symbol visibility changes + render the symbol local. */ + + /* No need to do anything if we're not creating a shared object. */ + if (! info->shared) + break; + + /* We don't need to handle relocs into sections not going into + the "real" output. */ + if ((sec->flags & SEC_ALLOC) == 0) + break; + + /* If the symbol is local, then we know already we can + eliminate the reloc. */ + if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) + break; + + /* If this is with -Bsymbolic and the symbol isn't weak, and + is defined by an ordinary object (the ones we include in + this shared library) then we can also eliminate the + reloc. See comment above for more eliminable cases which + we can't identify at this time. */ + if (info->symbolic + && h->root.type != bfd_link_hash_defweak + && h->def_regular) + break; + + /* We may need to create a reloc section in the dynobj and made room + for this reloc. */ + if (sreloc == NULL) + { + sreloc = _bfd_elf_make_dynamic_reloc_section + (sec, dynobj, 2, abfd, /*rela?*/ TRUE); + + if (sreloc == NULL) + return FALSE; + } + + sreloc->size += sizeof (Elf32_External_Rela); + + /* We count the number of PC relative relocations we have + entered for this symbol, so that we can discard them + again if the symbol is later defined by a regular object. + We know that h is really a pointer to an + elf_cris_link_hash_entry. */ + { + struct elf_cris_link_hash_entry *eh; + struct elf_cris_pcrel_relocs_copied *p; + + eh = elf_cris_hash_entry (h); + + for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next) + if (p->section == sec) + break; + + if (p == NULL) + { + p = ((struct elf_cris_pcrel_relocs_copied *) + bfd_alloc (dynobj, (bfd_size_type) sizeof *p)); + if (p == NULL) + return FALSE; + p->next = eh->pcrel_relocs_copied; + eh->pcrel_relocs_copied = p; + p->section = sec; + p->count = 0; + p->r_type = r_type; + } + + ++p->count; + } + break; + + /* This relocation describes the C++ object vtable hierarchy. + Reconstruct it for later use during GC. */ + case R_CRIS_GNU_VTINHERIT: + if (!bfd_elf_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_CRIS_GNU_VTENTRY: + BFD_ASSERT (h != NULL); + if (h != NULL + && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) + return FALSE; + break; + + case R_CRIS_16_TPREL: + case R_CRIS_32_TPREL: + /* Already warned above, when necessary. */ + break; + + default: + /* Other relocs do not appear here. */ + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + } + + return TRUE; +} + +/* Set the sizes of the dynamic sections. */ + +static bfd_boolean +elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info) +{ + struct elf_cris_link_hash_table * htab; + bfd *dynobj; + asection *s; + bfd_boolean plt; + bfd_boolean relocs; + + htab = elf_cris_hash_table (info); + if (htab == NULL) + return FALSE; + + dynobj = elf_hash_table (info)->dynobj; + BFD_ASSERT (dynobj != NULL); + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Set the contents of the .interp section to the interpreter. */ + if (info->executable) + { + s = bfd_get_linker_section (dynobj, ".interp"); + BFD_ASSERT (s != NULL); + s->size = sizeof ELF_DYNAMIC_INTERPRETER; + s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; + } + } + else + { + /* Adjust all expected GOTPLT uses to use a GOT entry instead. */ + elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got, + info); + + /* We may have created entries in the .rela.got section. + However, if we are not creating the dynamic sections, we will + not actually use these entries. Reset the size of .rela.got, + which will cause it to get stripped from the output file + below. */ + s = bfd_get_linker_section (dynobj, ".rela.got"); + if (s != NULL) + s->size = 0; + } + + /* If this is a -Bsymbolic shared link, then we need to discard all PC + relative relocs against symbols defined in a regular object. We + allocated space for them in the check_relocs routine, but we will not + fill them in in the relocate_section routine. We also discard space + for relocs that have become for local symbols due to symbol + visibility changes. For programs, we discard space for relocs for + symbols not referenced by any dynamic object. */ + if (info->shared) + elf_cris_link_hash_traverse (htab, + elf_cris_discard_excess_dso_dynamics, + info); + else + elf_cris_link_hash_traverse (htab, + elf_cris_discard_excess_program_dynamics, + info); + + /* The check_relocs and adjust_dynamic_symbol entry points have + determined the sizes of the various dynamic sections. Allocate + memory for them. */ + plt = FALSE; + relocs = FALSE; + for (s = dynobj->sections; s != NULL; s = s->next) + { + const char *name; + + if ((s->flags & SEC_LINKER_CREATED) == 0) + continue; + + /* It's OK to base decisions on the section name, because none + of the dynobj section names depend upon the input files. */ + name = bfd_get_section_name (dynobj, s); + + if (strcmp (name, ".plt") == 0) + { + /* Remember whether there is a PLT. */ + plt = s->size != 0; + } + else if (strcmp (name, ".got.plt") == 0) + { + /* The .got.plt contains the .got header as well as the + actual .got.plt contents. The .got header may contain a + R_CRIS_DTPMOD entry at index 3. */ + s->size += htab->dtpmod_refcount != 0 + ? 8 : 0; + } + else if (CONST_STRNEQ (name, ".rela")) + { + if (strcmp (name, ".rela.got") == 0 + && htab->dtpmod_refcount != 0 + && info->shared) + s->size += sizeof (Elf32_External_Rela); + + if (s->size != 0) + { + /* Remember whether there are any reloc sections other + than .rela.plt. */ + if (strcmp (name, ".rela.plt") != 0) + relocs = TRUE; + + /* We use the reloc_count field as a counter if we need + to copy relocs into the output file. */ + s->reloc_count = 0; + } + } + else if (! CONST_STRNEQ (name, ".got") + && strcmp (name, ".dynbss") != 0) + { + /* It's not one of our sections, so don't allocate space. */ + continue; + } + + if (s->size == 0) + { + /* If we don't need this section, strip it from the + output file. This is mostly to handle .rela.bss and + .rela.plt. We must create both sections in + create_dynamic_sections, because they must be created + before the linker maps input sections to output + sections. The linker does that before + adjust_dynamic_symbol is called, and it is that + function which decides whether anything needs to go + into these sections. */ + s->flags |= SEC_EXCLUDE; + continue; + } + + if ((s->flags & SEC_HAS_CONTENTS) == 0) + continue; + + /* Allocate memory for the section contents. We use bfd_zalloc here + in case unused entries are not reclaimed before the section's + contents are written out. This should not happen, but this way + if it does, we will not write out garbage. For reloc sections, + this will make entries have the type R_CRIS_NONE. */ + s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size); + if (s->contents == NULL) + return FALSE; + } + + if (elf_hash_table (info)->dynamic_sections_created) + { + /* Add some entries to the .dynamic section. We fill in the + values later, in elf_cris_finish_dynamic_sections, but we + must add the entries now so that we get the correct size for + the .dynamic section. The DT_DEBUG entry is filled in by the + dynamic linker and used by the debugger. */ +#define add_dynamic_entry(TAG, VAL) \ + _bfd_elf_add_dynamic_entry (info, TAG, VAL) + + if (!info->shared) + { + if (!add_dynamic_entry (DT_DEBUG, 0)) + return FALSE; + } + + if (plt) + { + if (!add_dynamic_entry (DT_PLTGOT, 0) + || !add_dynamic_entry (DT_PLTRELSZ, 0) + || !add_dynamic_entry (DT_PLTREL, DT_RELA) + || !add_dynamic_entry (DT_JMPREL, 0)) + return FALSE; + } + + if (relocs) + { + if (!add_dynamic_entry (DT_RELA, 0) + || !add_dynamic_entry (DT_RELASZ, 0) + || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) + return FALSE; + } + + if ((info->flags & DF_TEXTREL) != 0) + { + if (!add_dynamic_entry (DT_TEXTREL, 0)) + return FALSE; + info->flags |= DF_TEXTREL; + } + } +#undef add_dynamic_entry + + return TRUE; +} + +/* This function is called via elf_cris_link_hash_traverse if we are + creating a shared object. In the -Bsymbolic case, it discards the + space allocated to copy PC relative relocs against symbols which + are defined in regular objects. For the normal non-symbolic case, + we also discard space for relocs that have become local due to + symbol visibility changes. We allocated space for them in the + check_relocs routine, but we won't fill them in in the + relocate_section routine. */ + +static bfd_boolean +elf_cris_discard_excess_dso_dynamics (struct elf_cris_link_hash_entry *h, + void * inf) +{ + struct elf_cris_pcrel_relocs_copied *s; + struct bfd_link_info *info = (struct bfd_link_info *) inf; + + /* If a symbol has been forced local or we have found a regular + definition for the symbolic link case, then we won't be needing + any relocs. */ + if (h->root.def_regular + && (h->root.forced_local + || info->symbolic)) + { + for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) + { + asection *sreloc + = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info) + ->dynobj, + s->section, + /*rela?*/ TRUE); + sreloc->size -= s->count * sizeof (Elf32_External_Rela); + } + return TRUE; + } + + /* If we have accounted for PC-relative relocs for read-only + sections, now is the time to warn for them. We can't do it in + cris_elf_check_relocs, because we don't know the status of all + symbols at that time (and it's common to force symbols local + late). */ + + for (s = h->pcrel_relocs_copied; s != NULL; s = s->next) + if ((s->section->flags & SEC_READONLY) != 0) + { + /* FIXME: How do we make this optionally a warning only? */ + (*_bfd_error_handler) + (_("%B, section `%A', to symbol `%s':\n" + " relocation %s should not be used" + " in a shared object; recompile with -fPIC"), + s->section->owner, + s->section, + h->root.root.root.string, + cris_elf_howto_table[s->r_type].name); + + info->flags |= DF_TEXTREL; + } + + return TRUE; +} + +/* This function is called via elf_cris_link_hash_traverse if we are *not* + creating a shared object. We discard space for relocs for symbols put + in the .got, but which we found we do not have to resolve at run-time. */ + +static bfd_boolean +elf_cris_discard_excess_program_dynamics (struct elf_cris_link_hash_entry *h, + void * inf) +{ + struct bfd_link_info *info = (struct bfd_link_info *) inf; + + /* If we're not creating a shared library and have a symbol which is + referred to by .got references, but the symbol is defined locally, + (or rather, not defined by a DSO) then lose the reloc for the .got + (don't allocate room for it). Likewise for relocs for something + for which we create a PLT. */ + if (!h->root.def_dynamic + || h->root.plt.refcount > 0) + { + if (h->reg_got_refcount > 0 + /* The size of this section is only valid and in sync with the + various reference counts if we do dynamic; don't decrement it + otherwise. */ + && elf_hash_table (info)->dynamic_sections_created) + { + bfd *dynobj = elf_hash_table (info)->dynobj; + asection *srelgot; + + BFD_ASSERT (dynobj != NULL); + + srelgot = bfd_get_linker_section (dynobj, ".rela.got"); + + BFD_ASSERT (srelgot != NULL); + + srelgot->size -= sizeof (Elf32_External_Rela); + } + + /* If the locally-defined symbol isn't used by a DSO, then we don't + have to export it as a dynamic symbol. This was already done for + functions; doing this for all symbols would presumably not + introduce new problems. Of course we don't do this if we're + exporting all dynamic symbols. */ + if (! info->export_dynamic + && h->root.dynindx != -1 + && !h->root.def_dynamic + && !h->root.ref_dynamic) + { + h->root.dynindx = -1; + _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr, + h->root.dynstr_index); + } + } + + return TRUE; +} + +/* Reject a file depending on presence and expectation of prefixed + underscores on symbols. */ + +static bfd_boolean +cris_elf_object_p (bfd *abfd) +{ + if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags)) + return FALSE; + + if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)) + return (bfd_get_symbol_leading_char (abfd) == '_'); + else + return (bfd_get_symbol_leading_char (abfd) == 0); +} + +/* Mark presence or absence of leading underscore. Set machine type + flags from mach type. */ + +static void +cris_elf_final_write_processing (bfd *abfd, + bfd_boolean linker ATTRIBUTE_UNUSED) +{ + unsigned long e_flags = elf_elfheader (abfd)->e_flags; + + e_flags &= ~EF_CRIS_UNDERSCORE; + if (bfd_get_symbol_leading_char (abfd) == '_') + e_flags |= EF_CRIS_UNDERSCORE; + + switch (bfd_get_mach (abfd)) + { + case bfd_mach_cris_v0_v10: + e_flags |= EF_CRIS_VARIANT_ANY_V0_V10; + break; + + case bfd_mach_cris_v10_v32: + e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32; + break; + + case bfd_mach_cris_v32: + e_flags |= EF_CRIS_VARIANT_V32; + break; + + default: + _bfd_abort (__FILE__, __LINE__, + _("Unexpected machine number")); + } + + elf_elfheader (abfd)->e_flags = e_flags; +} + +/* Set the mach type from e_flags value. */ + +static bfd_boolean +cris_elf_set_mach_from_flags (bfd *abfd, + unsigned long flags) +{ + switch (flags & EF_CRIS_VARIANT_MASK) + { + case EF_CRIS_VARIANT_ANY_V0_V10: + bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10); + break; + + case EF_CRIS_VARIANT_V32: + bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32); + break; + + case EF_CRIS_VARIANT_COMMON_V10_V32: + bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32); + break; + + default: + /* Since we don't recognize them, we obviously can't support them + with this code; we'd have to require that all future handling + would be optional. */ + bfd_set_error (bfd_error_wrong_format); + return FALSE; + } + + return TRUE; +} + +/* Display the flags field. */ + +static bfd_boolean +cris_elf_print_private_bfd_data (bfd *abfd, void * ptr) +{ + FILE *file = (FILE *) ptr; + + BFD_ASSERT (abfd != NULL && ptr != NULL); + + _bfd_elf_print_private_bfd_data (abfd, ptr); + + fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags); + + if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE) + fprintf (file, _(" [symbols have a _ prefix]")); + if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) + == EF_CRIS_VARIANT_COMMON_V10_V32) + fprintf (file, _(" [v10 and v32]")); + if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK) + == EF_CRIS_VARIANT_V32) + fprintf (file, _(" [v32]")); + + fputc ('\n', file); + return TRUE; +} + +/* Don't mix files with and without a leading underscore. */ + +static bfd_boolean +cris_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) +{ + int imach, omach; + + if (! _bfd_generic_verify_endian_match (ibfd, obfd)) + return FALSE; + + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || bfd_get_flavour (obfd) != bfd_target_elf_flavour) + return TRUE; + + imach = bfd_get_mach (ibfd); + + if (! elf_flags_init (obfd)) + { + /* This happens when ld starts out with a 'blank' output file. */ + elf_flags_init (obfd) = TRUE; + + /* We ignore the linker-set mach, and instead set it according to + the first input file. This would also happen if we could + somehow filter out the OUTPUT_ARCH () setting from elf.sc. + This allows us to keep the same linker config across + cris(v0..v10) and crisv32. The drawback is that we can't force + the output type, which might be a sane thing to do for a + v10+v32 compatibility object. */ + if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) + return FALSE; + } + + if (bfd_get_symbol_leading_char (ibfd) + != bfd_get_symbol_leading_char (obfd)) + { + (*_bfd_error_handler) + (bfd_get_symbol_leading_char (ibfd) == '_' + ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols") + : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"), + ibfd); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + omach = bfd_get_mach (obfd); + + if (imach != omach) + { + /* We can get an incompatible combination only if either is + bfd_mach_cris_v32, and the other one isn't compatible. */ + if ((imach == bfd_mach_cris_v32 + && omach != bfd_mach_cris_v10_v32) + || (omach == bfd_mach_cris_v32 + && imach != bfd_mach_cris_v10_v32)) + { + (*_bfd_error_handler) + ((imach == bfd_mach_cris_v32) + ? _("%B contains CRIS v32 code, incompatible" + " with previous objects") + : _("%B contains non-CRIS-v32 code, incompatible" + " with previous objects"), + ibfd); + bfd_set_error (bfd_error_bad_value); + return FALSE; + } + + /* We don't have to check the case where the input is compatible + with v10 and v32, because the output is already known to be set + to the other (compatible) mach. */ + if (omach == bfd_mach_cris_v10_v32 + && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach)) + return FALSE; + } + + return TRUE; +} + +/* Do side-effects of e_flags copying to obfd. */ + +static bfd_boolean +cris_elf_copy_private_bfd_data (bfd *ibfd, bfd *obfd) +{ + /* Call the base function. */ + if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd)) + return FALSE; + + /* If output is big-endian for some obscure reason, stop here. */ + if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE) + return FALSE; + + if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour + || bfd_get_flavour (obfd) != bfd_target_elf_flavour) + return TRUE; + + /* Do what we really came here for. */ + return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd)); +} + +static enum elf_reloc_type_class +elf_cris_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED, + const asection *rel_sec ATTRIBUTE_UNUSED, + const Elf_Internal_Rela *rela) +{ + enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info); + switch (r_type) + { + case R_CRIS_RELATIVE: + return reloc_class_relative; + case R_CRIS_JUMP_SLOT: + return reloc_class_plt; + case R_CRIS_COPY: + return reloc_class_copy; + default: + return reloc_class_normal; + } +} + +/* The elf_backend_got_elt_size worker. For one symbol, we can have up to + two GOT entries from three types with two different sizes. We handle + it as a single entry, so we can use the regular offset-calculation + machinery. */ + +static bfd_vma +elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED, + struct bfd_link_info *info ATTRIBUTE_UNUSED, + struct elf_link_hash_entry *hr, + bfd *ibfd, + unsigned long symndx) +{ + struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr; + bfd_vma eltsiz = 0; + + /* We may have one regular GOT entry or up to two TLS GOT + entries. */ + if (h == NULL) + { + Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; + bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd); + + BFD_ASSERT (local_got_refcounts != NULL); + + if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0) + { + /* We can't have a variable referred to both as a regular + variable and through TLS relocs. */ + BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0 + && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0); + return 4; + } + + if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0) + eltsiz += 8; + + if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0) + eltsiz += 4; + } + else + { + struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h); + if (hh->reg_got_refcount > 0) + { + /* The actual error-on-input is emitted elsewhere. */ + BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0); + return 4; + } + + if (hh->dtp_refcount > 0) + eltsiz += 8; + + if (hh->tprel_refcount > 0) + eltsiz += 4; + } + + /* We're only called when h->got.refcount is non-zero, so we must + have a non-zero size. */ + BFD_ASSERT (eltsiz != 0); + return eltsiz; +} + +#define ELF_ARCH bfd_arch_cris +#define ELF_TARGET_ID CRIS_ELF_DATA +#define ELF_MACHINE_CODE EM_CRIS +#define ELF_MAXPAGESIZE 0x2000 + +#define TARGET_LITTLE_SYM bfd_elf32_cris_vec +#define TARGET_LITTLE_NAME "elf32-cris" +#define elf_symbol_leading_char 0 + +#define elf_info_to_howto_rel NULL +#define elf_info_to_howto cris_info_to_howto_rela +#define elf_backend_relocate_section cris_elf_relocate_section +#define elf_backend_gc_mark_hook cris_elf_gc_mark_hook +#define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook +#define elf_backend_plt_sym_val cris_elf_plt_sym_val +#define elf_backend_check_relocs cris_elf_check_relocs +#define elf_backend_grok_prstatus cris_elf_grok_prstatus +#define elf_backend_grok_psinfo cris_elf_grok_psinfo + +#define elf_backend_can_gc_sections 1 +#define elf_backend_can_refcount 1 + +#define elf_backend_object_p cris_elf_object_p +#define elf_backend_final_write_processing \ + cris_elf_final_write_processing +#define bfd_elf32_bfd_print_private_bfd_data \ + cris_elf_print_private_bfd_data +#define bfd_elf32_bfd_merge_private_bfd_data \ + cris_elf_merge_private_bfd_data +#define bfd_elf32_bfd_copy_private_bfd_data \ + cris_elf_copy_private_bfd_data + +#define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup +#define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup + +#define bfd_elf32_bfd_link_hash_table_create \ + elf_cris_link_hash_table_create +#define elf_backend_adjust_dynamic_symbol \ + elf_cris_adjust_dynamic_symbol +#define elf_backend_copy_indirect_symbol \ + elf_cris_copy_indirect_symbol +#define elf_backend_size_dynamic_sections \ + elf_cris_size_dynamic_sections +#define elf_backend_init_index_section _bfd_elf_init_1_index_section +#define elf_backend_finish_dynamic_symbol \ + elf_cris_finish_dynamic_symbol +#define elf_backend_finish_dynamic_sections \ + elf_cris_finish_dynamic_sections +#define elf_backend_create_dynamic_sections \ + _bfd_elf_create_dynamic_sections +#define bfd_elf32_bfd_final_link \ + bfd_elf_gc_common_final_link +#define elf_backend_hide_symbol elf_cris_hide_symbol +#define elf_backend_reloc_type_class elf_cris_reloc_type_class + +#define elf_backend_want_got_plt 1 +#define elf_backend_plt_readonly 1 +#define elf_backend_want_plt_sym 0 +#define elf_backend_got_header_size 12 +#define elf_backend_got_elt_size elf_cris_got_elt_size + +/* Later, we my want to optimize RELA entries into REL entries for dynamic + linking and libraries (if it's a win of any significance). Until then, + take the easy route. */ +#define elf_backend_may_use_rel_p 0 +#define elf_backend_may_use_rela_p 1 +#define elf_backend_rela_normal 1 + +#include "elf32-target.h" + +#undef TARGET_LITTLE_SYM +#undef TARGET_LITTLE_NAME +#undef elf_symbol_leading_char + +#define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec +#define TARGET_LITTLE_NAME "elf32-us-cris" +#define elf_symbol_leading_char '_' +#undef elf32_bed +#define elf32_bed elf32_us_cris_bed + +#include "elf32-target.h" |