/* SPARC-specific support for 32-bit ELF
- Copyright (C) 1993, 1994, 1995, 1996 Free Software Foundation, Inc.
+ Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
+ Free Software Foundation, Inc.
This file is part of BFD, the Binary File Descriptor library.
#include "bfdlink.h"
#include "libbfd.h"
#include "elf-bfd.h"
+#include "elf/sparc.h"
+#include "opcode/sparc.h"
-static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
+static reloc_howto_type *elf32_sparc_reloc_type_lookup
PARAMS ((bfd *, bfd_reloc_code_real_type));
-static void elf_info_to_howto
+static void elf32_sparc_info_to_howto
PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
-static boolean elf32_sparc_check_relocs
+static bfd_boolean elf32_sparc_check_relocs
PARAMS ((bfd *, struct bfd_link_info *, asection *,
const Elf_Internal_Rela *));
-static boolean elf32_sparc_adjust_dynamic_symbol
+static bfd_boolean elf32_sparc_adjust_dynamic_symbol
PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
-static boolean elf32_sparc_adjust_dynindx
- PARAMS ((struct elf_link_hash_entry *, PTR));
-static boolean elf32_sparc_size_dynamic_sections
+static bfd_boolean elf32_sparc_size_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
-static boolean elf32_sparc_relocate_section
+static bfd_boolean elf32_sparc_relax_section
+ PARAMS ((bfd *, asection *, struct bfd_link_info *, bfd_boolean *));
+static bfd_boolean elf32_sparc_relocate_section
PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
-static boolean elf32_sparc_finish_dynamic_symbol
+static bfd_boolean elf32_sparc_finish_dynamic_symbol
PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
Elf_Internal_Sym *));
-static boolean elf32_sparc_finish_dynamic_sections
+static bfd_boolean elf32_sparc_finish_dynamic_sections
PARAMS ((bfd *, struct bfd_link_info *));
+static bfd_boolean elf32_sparc_merge_private_bfd_data
+ PARAMS ((bfd *, bfd *));
+static bfd_boolean elf32_sparc_object_p
+ PARAMS ((bfd *));
+static void elf32_sparc_final_write_processing
+ PARAMS ((bfd *, bfd_boolean));
+static enum elf_reloc_type_class elf32_sparc_reloc_type_class
+ PARAMS ((const Elf_Internal_Rela *));
+static asection * elf32_sparc_gc_mark_hook
+ PARAMS ((asection *, struct bfd_link_info *, Elf_Internal_Rela *,
+ struct elf_link_hash_entry *, Elf_Internal_Sym *));
+static bfd_boolean elf32_sparc_gc_sweep_hook
+ PARAMS ((bfd *, struct bfd_link_info *, asection *,
+ const Elf_Internal_Rela *));
+\f
+/* The relocation "howto" table. */
-enum reloc_type
- {
- R_SPARC_NONE = 0,
- R_SPARC_8, R_SPARC_16, R_SPARC_32,
- R_SPARC_DISP8, R_SPARC_DISP16, R_SPARC_DISP32,
- R_SPARC_WDISP30, R_SPARC_WDISP22,
- R_SPARC_HI22, R_SPARC_22,
- R_SPARC_13, R_SPARC_LO10,
- R_SPARC_GOT10, R_SPARC_GOT13, R_SPARC_GOT22,
- R_SPARC_PC10, R_SPARC_PC22,
- R_SPARC_WPLT30,
- R_SPARC_COPY,
- R_SPARC_GLOB_DAT, R_SPARC_JMP_SLOT,
- R_SPARC_RELATIVE,
- R_SPARC_UA32,
- R_SPARC_max
- };
-
-#if 0
-static CONST char *CONST reloc_type_names[] =
-{
- "R_SPARC_NONE",
- "R_SPARC_8", "R_SPARC_16", "R_SPARC_32",
- "R_SPARC_DISP8", "R_SPARC_DISP16", "R_SPARC_DISP32",
- "R_SPARC_WDISP30", "R_SPARC_WDISP22",
- "R_SPARC_HI22", "R_SPARC_22",
- "R_SPARC_13", "R_SPARC_LO10",
- "R_SPARC_GOT10", "R_SPARC_GOT13", "R_SPARC_GOT22",
- "R_SPARC_PC10", "R_SPARC_PC22",
- "R_SPARC_WPLT30",
- "R_SPARC_COPY",
- "R_SPARC_GLOB_DAT", "R_SPARC_JMP_SLOT",
- "R_SPARC_RELATIVE",
- "R_SPARC_UA32",
-};
-#endif
+static bfd_reloc_status_type sparc_elf_notsupported_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
+static bfd_reloc_status_type sparc_elf_wdisp16_reloc
+ PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
-static reloc_howto_type elf_sparc_howto_table[] =
+reloc_howto_type _bfd_sparc_elf_howto_table[] =
{
- HOWTO(R_SPARC_NONE, 0,0, 0,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_NONE", false,0,0x00000000,true),
- HOWTO(R_SPARC_8, 0,0, 8,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_8", false,0,0x000000ff,true),
- HOWTO(R_SPARC_16, 0,1,16,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_16", false,0,0x0000ffff,true),
- HOWTO(R_SPARC_32, 0,2,32,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_32", false,0,0xffffffff,true),
- HOWTO(R_SPARC_DISP8, 0,0, 8,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_DISP8", false,0,0x000000ff,true),
- HOWTO(R_SPARC_DISP16, 0,1,16,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_DISP16", false,0,0x0000ffff,true),
- HOWTO(R_SPARC_DISP32, 0,2,32,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_DISP32", false,0,0x00ffffff,true),
- HOWTO(R_SPARC_WDISP30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_WDISP30", false,0,0x3fffffff,true),
- HOWTO(R_SPARC_WDISP22, 2,2,22,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_WDISP22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_HI22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_HI22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_22, 0,2,22,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_13, 0,2,13,false,0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_13", false,0,0x00001fff,true),
- HOWTO(R_SPARC_LO10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_LO10", false,0,0x000003ff,true),
- HOWTO(R_SPARC_GOT10, 0,2,10,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_GOT10", false,0,0x000003ff,true),
- HOWTO(R_SPARC_GOT13, 0,2,13,false,0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_GOT13", false,0,0x00001fff,true),
- HOWTO(R_SPARC_GOT22, 10,2,22,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_GOT22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_PC10, 0,2,10,true, 0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_PC10", false,0,0x000003ff,true),
- HOWTO(R_SPARC_PC22, 10,2,22,true, 0,complain_overflow_bitfield,bfd_elf_generic_reloc,"R_SPARC_PC22", false,0,0x003fffff,true),
- HOWTO(R_SPARC_WPLT30, 2,2,30,true, 0,complain_overflow_signed, bfd_elf_generic_reloc,"R_SPARC_WPLT30", false,0,0x3fffffff,true),
- HOWTO(R_SPARC_COPY, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_COPY", false,0,0x00000000,true),
- HOWTO(R_SPARC_GLOB_DAT,0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_GLOB_DAT",false,0,0x00000000,true),
- HOWTO(R_SPARC_JMP_SLOT,0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_JMP_SLOT",false,0,0x00000000,true),
- HOWTO(R_SPARC_RELATIVE,0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_RELATIVE",false,0,0x00000000,true),
- HOWTO(R_SPARC_UA32, 0,0,00,false,0,complain_overflow_dont, bfd_elf_generic_reloc,"R_SPARC_UA32", false,0,0x00000000,true),
+ HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_8, 0,0, 8,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_8", FALSE,0,0x000000ff,TRUE),
+ HOWTO(R_SPARC_16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_16", FALSE,0,0x0000ffff,TRUE),
+ HOWTO(R_SPARC_32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_32", FALSE,0,0xffffffff,TRUE),
+ HOWTO(R_SPARC_DISP8, 0,0, 8,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP8", FALSE,0,0x000000ff,TRUE),
+ HOWTO(R_SPARC_DISP16, 0,1,16,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP16", FALSE,0,0x0000ffff,TRUE),
+ HOWTO(R_SPARC_DISP32, 0,2,32,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_DISP32", FALSE,0,0xffffffff,TRUE),
+ HOWTO(R_SPARC_WDISP30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP30", FALSE,0,0x3fffffff,TRUE),
+ HOWTO(R_SPARC_WDISP22, 2,2,22,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP22", FALSE,0,0x003fffff,TRUE),
+ HOWTO(R_SPARC_HI22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_HI22", FALSE,0,0x003fffff,TRUE),
+ HOWTO(R_SPARC_22, 0,2,22,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_22", FALSE,0,0x003fffff,TRUE),
+ HOWTO(R_SPARC_13, 0,2,13,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_13", FALSE,0,0x00001fff,TRUE),
+ HOWTO(R_SPARC_LO10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_LO10", FALSE,0,0x000003ff,TRUE),
+ HOWTO(R_SPARC_GOT10, 0,2,10,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT10", FALSE,0,0x000003ff,TRUE),
+ HOWTO(R_SPARC_GOT13, 0,2,13,FALSE,0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_GOT13", FALSE,0,0x00001fff,TRUE),
+ HOWTO(R_SPARC_GOT22, 10,2,22,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GOT22", FALSE,0,0x003fffff,TRUE),
+ HOWTO(R_SPARC_PC10, 0,2,10,TRUE, 0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_PC10", FALSE,0,0x000003ff,TRUE),
+ HOWTO(R_SPARC_PC22, 10,2,22,TRUE, 0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PC22", FALSE,0,0x003fffff,TRUE),
+ HOWTO(R_SPARC_WPLT30, 2,2,30,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WPLT30", FALSE,0,0x3fffffff,TRUE),
+ HOWTO(R_SPARC_COPY, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_COPY", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_GLOB_DAT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_GLOB_DAT",FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_JMP_SLOT, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_JMP_SLOT",FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_RELATIVE, 0,0,00,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_RELATIVE",FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_UA32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA32", FALSE,0,0xffffffff,TRUE),
+ HOWTO(R_SPARC_PLT32, 0,0,00,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_PLT32", FALSE,0,0xffffffff,TRUE),
+ HOWTO(R_SPARC_HIPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HIPLT22", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_LOPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LOPLT10", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_PCPLT32, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT32", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_PCPLT22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT22", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_PCPLT10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PCPLT10", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_10, 0,2,10,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_10", FALSE,0,0x000003ff,TRUE),
+ HOWTO(R_SPARC_11, 0,2,11,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_11", FALSE,0,0x000007ff,TRUE),
+ /* These are for sparc64 in a 64 bit environment.
+ Values need to be here because the table is indexed by reloc number. */
+ HOWTO(R_SPARC_64, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_64", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_OLO10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_OLO10", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HH22", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_HM10", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_LM22", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_PC_HH22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HH22", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_PC_HM10, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_HM10", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_PC_LM22, 0,0,00,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_PC_LM22", FALSE,0,0x00000000,TRUE),
+ /* End sparc64 in 64 bit environment values.
+ The following are for sparc64 in a 32 bit environment. */
+ HOWTO(R_SPARC_WDISP16, 2,2,16,TRUE, 0,complain_overflow_signed, sparc_elf_wdisp16_reloc,"R_SPARC_WDISP16", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_WDISP19, 2,2,19,TRUE, 0,complain_overflow_signed, bfd_elf_generic_reloc, "R_SPARC_WDISP19", FALSE,0,0x0007ffff,TRUE),
+ HOWTO(R_SPARC_UNUSED_42, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_UNUSED_42",FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_7, 0,2, 7,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_7", FALSE,0,0x0000007f,TRUE),
+ HOWTO(R_SPARC_5, 0,2, 5,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_5", FALSE,0,0x0000001f,TRUE),
+ HOWTO(R_SPARC_6, 0,2, 6,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_6", FALSE,0,0x0000003f,TRUE),
+ HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_NONE, 0,0, 0,FALSE,0,complain_overflow_dont, bfd_elf_generic_reloc, "R_SPARC_NONE", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_UA64, 0,0, 0,FALSE,0,complain_overflow_dont, sparc_elf_notsupported_reloc, "R_SPARC_UA64", FALSE,0,0x00000000,TRUE),
+ HOWTO(R_SPARC_UA16, 0,1,16,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_UA16", FALSE,0,0x0000ffff,TRUE),
+ HOWTO(R_SPARC_REV32, 0,2,32,FALSE,0,complain_overflow_bitfield,bfd_elf_generic_reloc, "R_SPARC_REV32", FALSE,0,0xffffffff,TRUE),
};
+static reloc_howto_type elf32_sparc_vtinherit_howto =
+ HOWTO (R_SPARC_GNU_VTINHERIT, 0,2,0,FALSE,0,complain_overflow_dont, NULL, "R_SPARC_GNU_VTINHERIT", FALSE,0, 0, FALSE);
+static reloc_howto_type elf32_sparc_vtentry_howto =
+ HOWTO (R_SPARC_GNU_VTENTRY, 0,2,0,FALSE,0,complain_overflow_dont, _bfd_elf_rel_vtable_reloc_fn,"R_SPARC_GNU_VTENTRY", FALSE,0,0, FALSE);
struct elf_reloc_map {
- unsigned char bfd_reloc_val;
+ bfd_reloc_code_real_type bfd_reloc_val;
unsigned char elf_reloc_val;
};
-static CONST struct elf_reloc_map sparc_reloc_map[] =
+static const struct elf_reloc_map sparc_reloc_map[] =
{
{ BFD_RELOC_NONE, R_SPARC_NONE, },
{ BFD_RELOC_16, R_SPARC_16, },
+ { BFD_RELOC_16_PCREL, R_SPARC_DISP16 },
{ BFD_RELOC_8, R_SPARC_8 },
{ BFD_RELOC_8_PCREL, R_SPARC_DISP8 },
- { BFD_RELOC_CTOR, R_SPARC_32 }, /* @@ Assumes 32 bits. */
+ { BFD_RELOC_CTOR, R_SPARC_32 },
{ BFD_RELOC_32, R_SPARC_32 },
{ BFD_RELOC_32_PCREL, R_SPARC_DISP32 },
{ BFD_RELOC_HI22, R_SPARC_HI22 },
{ BFD_RELOC_LO10, R_SPARC_LO10, },
{ BFD_RELOC_32_PCREL_S2, R_SPARC_WDISP30 },
+ { BFD_RELOC_SPARC_PLT32, R_SPARC_PLT32 },
{ BFD_RELOC_SPARC22, R_SPARC_22 },
{ BFD_RELOC_SPARC13, R_SPARC_13 },
{ BFD_RELOC_SPARC_GOT10, R_SPARC_GOT10 },
{ BFD_RELOC_SPARC_JMP_SLOT, R_SPARC_JMP_SLOT },
{ BFD_RELOC_SPARC_RELATIVE, R_SPARC_RELATIVE },
{ BFD_RELOC_SPARC_WDISP22, R_SPARC_WDISP22 },
-/*{ BFD_RELOC_SPARC_UA32, R_SPARC_UA32 }, not used?? */
+ { BFD_RELOC_SPARC_UA16, R_SPARC_UA16 },
+ { BFD_RELOC_SPARC_UA32, R_SPARC_UA32 },
+ { BFD_RELOC_SPARC_UA64, R_SPARC_UA64 },
+ { BFD_RELOC_SPARC_10, R_SPARC_10 },
+ { BFD_RELOC_SPARC_11, R_SPARC_11 },
+ { BFD_RELOC_SPARC_64, R_SPARC_64 },
+ { BFD_RELOC_SPARC_OLO10, R_SPARC_OLO10 },
+ { BFD_RELOC_SPARC_HH22, R_SPARC_HH22 },
+ { BFD_RELOC_SPARC_HM10, R_SPARC_HM10 },
+ { BFD_RELOC_SPARC_LM22, R_SPARC_LM22 },
+ { BFD_RELOC_SPARC_PC_HH22, R_SPARC_PC_HH22 },
+ { BFD_RELOC_SPARC_PC_HM10, R_SPARC_PC_HM10 },
+ { BFD_RELOC_SPARC_PC_LM22, R_SPARC_PC_LM22 },
+ { BFD_RELOC_SPARC_WDISP16, R_SPARC_WDISP16 },
+ { BFD_RELOC_SPARC_WDISP19, R_SPARC_WDISP19 },
+ { BFD_RELOC_SPARC_7, R_SPARC_7 },
+ { BFD_RELOC_SPARC_5, R_SPARC_5 },
+ { BFD_RELOC_SPARC_6, R_SPARC_6 },
+ { BFD_RELOC_SPARC_REV32, R_SPARC_REV32 },
+ { BFD_RELOC_VTABLE_INHERIT, R_SPARC_GNU_VTINHERIT },
+ { BFD_RELOC_VTABLE_ENTRY, R_SPARC_GNU_VTENTRY },
};
static reloc_howto_type *
-bfd_elf32_bfd_reloc_type_lookup (abfd, code)
- bfd *abfd;
+elf32_sparc_reloc_type_lookup (abfd, code)
+ bfd *abfd ATTRIBUTE_UNUSED;
bfd_reloc_code_real_type code;
{
unsigned int i;
- for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
+
+ switch (code)
{
- if (sparc_reloc_map[i].bfd_reloc_val == code)
- return &elf_sparc_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
+ case BFD_RELOC_VTABLE_INHERIT:
+ return &elf32_sparc_vtinherit_howto;
+
+ case BFD_RELOC_VTABLE_ENTRY:
+ return &elf32_sparc_vtentry_howto;
+
+ default:
+ for (i = 0; i < sizeof (sparc_reloc_map) / sizeof (struct elf_reloc_map); i++)
+ {
+ if (sparc_reloc_map[i].bfd_reloc_val == code)
+ return &_bfd_sparc_elf_howto_table[(int) sparc_reloc_map[i].elf_reloc_val];
+ }
}
- return 0;
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
}
+/* We need to use ELF32_R_TYPE so we have our own copy of this function,
+ and elf64-sparc.c has its own copy. */
+
static void
-elf_info_to_howto (abfd, cache_ptr, dst)
- bfd *abfd;
+elf32_sparc_info_to_howto (abfd, cache_ptr, dst)
+ bfd *abfd ATTRIBUTE_UNUSED;
arelent *cache_ptr;
Elf_Internal_Rela *dst;
{
- BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max);
- cache_ptr->howto = &elf_sparc_howto_table[ELF32_R_TYPE(dst->r_info)];
+ switch (ELF32_R_TYPE(dst->r_info))
+ {
+ case R_SPARC_GNU_VTINHERIT:
+ cache_ptr->howto = &elf32_sparc_vtinherit_howto;
+ break;
+
+ case R_SPARC_GNU_VTENTRY:
+ cache_ptr->howto = &elf32_sparc_vtentry_howto;
+ break;
+
+ default:
+ BFD_ASSERT (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_SPARC_max_std);
+ cache_ptr->howto = &_bfd_sparc_elf_howto_table[ELF32_R_TYPE(dst->r_info)];
+ }
}
+\f
+/* For unsupported relocs. */
+
+static bfd_reloc_status_type
+sparc_elf_notsupported_reloc (abfd,
+ reloc_entry,
+ symbol,
+ data,
+ input_section,
+ output_bfd,
+ error_message)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ arelent *reloc_entry ATTRIBUTE_UNUSED;
+ asymbol *symbol ATTRIBUTE_UNUSED;
+ PTR data ATTRIBUTE_UNUSED;
+ asection *input_section ATTRIBUTE_UNUSED;
+ bfd *output_bfd ATTRIBUTE_UNUSED;
+ char **error_message ATTRIBUTE_UNUSED;
+{
+ return bfd_reloc_notsupported;
+}
+
+/* Handle the WDISP16 reloc. */
+
+static bfd_reloc_status_type
+sparc_elf_wdisp16_reloc (abfd,
+ reloc_entry,
+ symbol,
+ data,
+ input_section,
+ output_bfd,
+ error_message)
+ bfd *abfd;
+ arelent *reloc_entry;
+ asymbol *symbol;
+ PTR data;
+ asection *input_section;
+ bfd *output_bfd;
+ char **error_message ATTRIBUTE_UNUSED;
+{
+ bfd_vma relocation;
+ bfd_vma x;
+
+ if (output_bfd != (bfd *) NULL
+ && (symbol->flags & BSF_SECTION_SYM) == 0
+ && (! reloc_entry->howto->partial_inplace
+ || reloc_entry->addend == 0))
+ {
+ reloc_entry->address += input_section->output_offset;
+ return bfd_reloc_ok;
+ }
+
+ if (output_bfd != NULL)
+ return bfd_reloc_continue;
+
+ if (reloc_entry->address > input_section->_cooked_size)
+ return bfd_reloc_outofrange;
+ relocation = (symbol->value
+ + symbol->section->output_section->vma
+ + symbol->section->output_offset);
+ relocation += reloc_entry->addend;
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset);
+ relocation -= reloc_entry->address;
+
+ x = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address);
+ x |= ((((relocation >> 2) & 0xc000) << 6)
+ | ((relocation >> 2) & 0x3fff));
+ bfd_put_32 (abfd, x, (bfd_byte *) data + reloc_entry->address);
+
+ if ((bfd_signed_vma) relocation < - 0x40000
+ || (bfd_signed_vma) relocation > 0x3ffff)
+ return bfd_reloc_overflow;
+ else
+ return bfd_reloc_ok;
+}
\f
/* Functions for the SPARC ELF linker. */
allocate space in the global offset table or procedure linkage
table. */
-static boolean
+static bfd_boolean
elf32_sparc_check_relocs (abfd, info, sec, relocs)
bfd *abfd;
struct bfd_link_info *info;
asection *sreloc;
if (info->relocateable)
- return true;
+ return TRUE;
dynobj = elf_hash_table (info)->dynobj;
symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
/* Create the .got section. */
elf_hash_table (info)->dynobj = dynobj = abfd;
if (! _bfd_elf_create_got_section (dynobj, info))
- return false;
+ return FALSE;
}
if (sgot == NULL)
| SEC_LOAD
| SEC_HAS_CONTENTS
| SEC_IN_MEMORY
+ | SEC_LINKER_CREATED
| SEC_READONLY))
|| ! bfd_set_section_alignment (dynobj, srelgot, 2))
- return false;
+ return FALSE;
}
}
if (h != NULL)
{
- if (h->got_offset != (bfd_vma) -1)
+ if (h->got.offset != (bfd_vma) -1)
{
/* We have already allocated space in the .got. */
break;
}
- h->got_offset = sgot->_raw_size;
+ h->got.offset = sgot->_raw_size;
/* Make sure this symbol is output as a dynamic symbol. */
if (h->dynindx == -1)
{
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- return false;
+ return FALSE;
}
srelgot->_raw_size += sizeof (Elf32_External_Rela);
symbol. */
if (local_got_offsets == NULL)
{
- size_t size;
+ bfd_size_type size;
register unsigned int i;
- size = symtab_hdr->sh_info * sizeof (bfd_vma);
+ size = symtab_hdr->sh_info;
+ size *= sizeof (bfd_vma);
local_got_offsets = (bfd_vma *) bfd_alloc (abfd, size);
if (local_got_offsets == NULL)
- return false;
+ return FALSE;
elf_local_got_offsets (abfd) = local_got_offsets;
for (i = 0; i < symtab_hdr->sh_info; i++)
local_got_offsets[i] = (bfd_vma) -1;
sgot->_raw_size += 4;
+ /* If the .got section is more than 0x1000 bytes, we add
+ 0x1000 to the value of _GLOBAL_OFFSET_TABLE_, so that 13
+ bit relocations have a greater chance of working. */
+ if (sgot->_raw_size >= 0x1000
+ && elf_hash_table (info)->hgot->root.u.def.value == 0)
+ elf_hash_table (info)->hgot->root.u.def.value = 0x1000;
+
break;
+ case R_SPARC_PLT32:
case R_SPARC_WPLT30:
/* This symbol requires a procedure linkage table entry. We
actually build the entry in adjust_dynamic_symbol,
if (h == NULL)
{
- /* It does not make sense to have a procedure linkage
- table entry for a local symbol. */
- bfd_set_error (bfd_error_bad_value);
- return false;
+ /* The Solaris native assembler will generate a WPLT30
+ reloc for a local symbol if you assemble a call from
+ one section to another when using -K pic. We treat
+ it as WDISP30. */
+ if (ELF32_R_TYPE (rel->r_info) != R_SPARC_WPLT30)
+ goto r_sparc_plt32;
+ break;
}
/* Make sure this symbol is output as a dynamic symbol. */
if (h->dynindx == -1)
{
if (! bfd_elf32_link_record_dynamic_symbol (info, h))
- return false;
+ return FALSE;
}
h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT;
+ if (ELF32_R_TYPE (rel->r_info) != R_SPARC_WPLT30)
+ goto r_sparc_plt32;
break;
case R_SPARC_PC10:
case R_SPARC_PC22:
+ if (h != NULL)
+ h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
+
if (h != NULL
&& strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
break;
case R_SPARC_DISP32:
case R_SPARC_WDISP30:
case R_SPARC_WDISP22:
- if (h == NULL)
+ case R_SPARC_WDISP19:
+ case R_SPARC_WDISP16:
+ if (h != NULL)
+ h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
+
+ /* If we are linking with -Bsymbolic, we do not need to copy
+ a PC relative reloc against a global symbol which is
+ defined in an object we are including in the link (i.e.,
+ DEF_REGULAR is set). FIXME: 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). This needs to be handled as in
+ elf32-i386.c. */
+ if (h == NULL
+ || (info->symbolic
+ && (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) != 0))
break;
/* Fall through. */
case R_SPARC_8:
case R_SPARC_22:
case R_SPARC_13:
case R_SPARC_LO10:
+ case R_SPARC_UA16:
case R_SPARC_UA32:
- if (info->shared
- && (sec->flags & SEC_ALLOC) != 0)
+ if (h != NULL)
+ h->elf_link_hash_flags |= ELF_LINK_NON_GOT_REF;
+
+ r_sparc_plt32:
+ if (info->shared && (sec->flags & SEC_ALLOC))
{
/* When creating a shared object, we must copy these
relocs into the output file. We create a reloc
elf_elfheader (abfd)->e_shstrndx,
elf_section_data (sec)->rel_hdr.sh_name));
if (name == NULL)
- return false;
+ return FALSE;
BFD_ASSERT (strncmp (name, ".rela", 5) == 0
&& strcmp (bfd_get_section_name (abfd, sec),
sreloc = bfd_get_section_by_name (dynobj, name);
if (sreloc == NULL)
{
+ flagword flags;
+
sreloc = bfd_make_section (dynobj, name);
+ flags = (SEC_HAS_CONTENTS | SEC_READONLY
+ | SEC_IN_MEMORY | SEC_LINKER_CREATED);
+ if ((sec->flags & SEC_ALLOC) != 0)
+ flags |= SEC_ALLOC | SEC_LOAD;
if (sreloc == NULL
- || ! bfd_set_section_flags (dynobj, sreloc,
- (SEC_ALLOC
- | SEC_LOAD
- | SEC_HAS_CONTENTS
- | SEC_IN_MEMORY
- | SEC_READONLY))
+ || ! bfd_set_section_flags (dynobj, sreloc, flags)
|| ! bfd_set_section_alignment (dynobj, sreloc, 2))
- return false;
+ return FALSE;
}
+ if (sec->flags & SEC_READONLY)
+ info->flags |= DF_TEXTREL;
}
sreloc->_raw_size += sizeof (Elf32_External_Rela);
break;
+ case R_SPARC_GNU_VTINHERIT:
+ if (!_bfd_elf32_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+ return FALSE;
+ break;
+
+ case R_SPARC_GNU_VTENTRY:
+ if (!_bfd_elf32_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+ return FALSE;
+ break;
+
default:
break;
}
}
- return true;
+ return TRUE;
+}
+
+static asection *
+elf32_sparc_gc_mark_hook (sec, info, rel, h, sym)
+ asection *sec;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+ Elf_Internal_Rela *rel;
+ struct elf_link_hash_entry *h;
+ Elf_Internal_Sym *sym;
+{
+ if (h != NULL)
+ {
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_SPARC_GNU_VTINHERIT:
+ case R_SPARC_GNU_VTENTRY:
+ break;
+
+ default:
+ switch (h->root.type)
+ {
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ return h->root.u.def.section;
+
+ case bfd_link_hash_common:
+ return h->root.u.c.p->section;
+
+ default:
+ break;
+ }
+ }
+ }
+ else
+ return bfd_section_from_elf_index (sec->owner, sym->st_shndx);
+
+ return NULL;
+}
+
+/* Update the got entry reference counts for the section being removed. */
+static bfd_boolean
+elf32_sparc_gc_sweep_hook (abfd, info, sec, relocs)
+ bfd *abfd;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+ asection *sec;
+ const Elf_Internal_Rela *relocs;
+{
+
+ Elf_Internal_Shdr *symtab_hdr;
+ struct elf_link_hash_entry **sym_hashes;
+ bfd_signed_vma *local_got_refcounts;
+ const Elf_Internal_Rela *rel, *relend;
+ unsigned long r_symndx;
+ struct elf_link_hash_entry *h;
+
+ symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+ sym_hashes = elf_sym_hashes (abfd);
+ local_got_refcounts = elf_local_got_refcounts (abfd);
+
+ relend = relocs + sec->reloc_count;
+ for (rel = relocs; rel < relend; rel++)
+ switch (ELF32_R_TYPE (rel->r_info))
+ {
+ case R_SPARC_GOT10:
+ case R_SPARC_GOT13:
+ case R_SPARC_GOT22:
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ if (h->got.refcount > 0)
+ h->got.refcount--;
+ }
+ else
+ {
+ if (local_got_refcounts[r_symndx] > 0)
+ local_got_refcounts[r_symndx]--;
+ }
+ break;
+
+ case R_SPARC_PLT32:
+ case R_SPARC_HIPLT22:
+ case R_SPARC_LOPLT10:
+ case R_SPARC_PCPLT32:
+ case R_SPARC_PCPLT10:
+ r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_symndx >= symtab_hdr->sh_info)
+ {
+ h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+ if (h->plt.refcount > 0)
+ h->plt.refcount--;
+ }
+ break;
+
+ default:
+ break;
+ }
+
+ return TRUE;
}
/* Adjust a symbol defined by a dynamic object and referenced by a
change the definition to something the rest of the link can
understand. */
-static boolean
+static bfd_boolean
elf32_sparc_adjust_dynamic_symbol (info, h)
struct bfd_link_info *info;
struct elf_link_hash_entry *h;
/* If this is a function, put it in the procedure linkage table. We
will fill in the contents of the procedure linkage table later
- (although we could actually do it here). */
+ (although we could actually do it here). The STT_NOTYPE
+ condition is a hack specifically for the Oracle libraries
+ delivered for Solaris; for some inexplicable reason, they define
+ some of their functions as STT_NOTYPE when they really should be
+ STT_FUNC. */
if (h->type == STT_FUNC
- || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0)
+ || (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0
+ || (h->type == STT_NOTYPE
+ && (h->root.type == bfd_link_hash_defined
+ || h->root.type == bfd_link_hash_defweak)
+ && (h->root.u.def.section->flags & SEC_CODE) != 0))
{
- if (! elf_hash_table (info)->dynamic_sections_created)
+ if (! elf_hash_table (info)->dynamic_sections_created
+ || ((!info->shared || info->symbolic || h->dynindx == -1)
+ && (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) != 0))
{
/* This case can occur if we saw a WPLT30 reloc in an input
- file, but none of the input files were dynamic objects.
- In such a case, we don't actually need to build a
- procedure linkage table, and we can just do a WDISP30
- reloc instead. */
- BFD_ASSERT ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0);
- return true;
+ file, but none of the input files were dynamic objects.
+ Or, when linking the main application or a -Bsymbolic
+ shared library against PIC code. Or when a global symbol
+ has been made private, e.g. via versioning.
+
+ In these cases we know what value the symbol will resolve
+ to, so we don't actually need to build a procedure linkage
+ table, and we can just do a WDISP30 reloc instead. */
+
+ h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT;
+ return TRUE;
}
s = bfd_get_section_by_name (dynobj, ".plt");
if (s->_raw_size >= 0x400000)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
- /* 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. This is required to make function
- pointers compare as equal between the normal executable and
- the shared library. */
- if (! info->shared
- && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
- {
- h->root.u.def.section = s;
- h->root.u.def.value = s->_raw_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. This is required to make function
+ pointers compare as equal between the normal executable and
+ the shared library. */
+ if (! info->shared
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
+ {
+ h->root.u.def.section = s;
+ h->root.u.def.value = s->_raw_size;
+ }
- h->plt_offset = s->_raw_size;
+ h->plt.offset = s->_raw_size;
/* Make room for this entry. */
s->_raw_size += PLT_ENTRY_SIZE;
BFD_ASSERT (s != NULL);
s->_raw_size += sizeof (Elf32_External_Rela);
- return true;
+ return TRUE;
}
/* If this is a weak symbol, and there is a real definition, the
|| h->weakdef->root.type == bfd_link_hash_defweak);
h->root.u.def.section = h->weakdef->root.u.def.section;
h->root.u.def.value = h->weakdef->root.u.def.value;
- return true;
+ return TRUE;
}
/* This is a reference to a symbol defined by a dynamic object which
For such cases we need not do anything here; the relocations will
be handled correctly by relocate_section. */
if (info->shared)
- return true;
+ return TRUE;
+
+ /* If there are no references to this symbol that do not use the
+ GOT, we don't need to generate a copy reloc. */
+ if ((h->elf_link_hash_flags & ELF_LINK_NON_GOT_REF) == 0)
+ return TRUE;
/* We must allocate the symbol in our .dynbss section, which will
become part of the .bss section of the executable. There will be
s = bfd_get_section_by_name (dynobj, ".dynbss");
BFD_ASSERT (s != NULL);
- /* If the symbol is currently defined in the .bss section of the
- dynamic object, then it is OK to simply initialize it to zero.
- If the symbol is in some other section, we must generate a
- R_SPARC_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 .rel.bss section
- we are going to use. */
- if ((h->root.u.def.section->flags & SEC_LOAD) != 0)
+ /* We must generate a R_SPARC_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
+ .rel.bss section we are going to use. */
+ if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
{
asection *srel;
if (power_of_two > bfd_get_section_alignment (dynobj, s))
{
if (! bfd_set_section_alignment (dynobj, s, power_of_two))
- return false;
+ return FALSE;
}
/* Define the symbol as being at this point in the section. */
/* Increment the section size to make room for the symbol. */
s->_raw_size += h->size;
- return true;
+ return TRUE;
}
/* Set the sizes of the dynamic sections. */
-static boolean
+static bfd_boolean
elf32_sparc_size_dynamic_sections (output_bfd, info)
- bfd *output_bfd;
+ bfd *output_bfd ATTRIBUTE_UNUSED;
struct bfd_link_info *info;
{
bfd *dynobj;
asection *s;
- boolean reltext;
- boolean relplt;
+ bfd_boolean relplt;
dynobj = elf_hash_table (info)->dynobj;
BFD_ASSERT (dynobj != NULL);
/* The check_relocs and adjust_dynamic_symbol entry points have
determined the sizes of the various dynamic sections. Allocate
memory for them. */
- reltext = false;
- relplt = false;
+ relplt = FALSE;
for (s = dynobj->sections; s != NULL; s = s->next)
{
const char *name;
- boolean strip;
+ bfd_boolean strip;
- if ((s->flags & SEC_IN_MEMORY) == 0)
+ 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);
- strip = false;
+ strip = FALSE;
if (strncmp (name, ".rela", 5) == 0)
{
adjust_dynamic_symbol is called, and it is that
function which decides whether anything needs to go
into these sections. */
- strip = true;
+ strip = TRUE;
}
else
{
- asection *target;
-
- /* If this relocation section applies to a read only
- section, then we probably need a DT_TEXTREL entry. */
- target = bfd_get_section_by_name (output_bfd, name + 5);
- if (target != NULL
- && (target->flags & SEC_READONLY) != 0)
- reltext = true;
-
if (strcmp (name, ".rela.plt") == 0)
- relplt = true;
+ relplt = TRUE;
/* We use the reloc_count field as a counter if we need
to copy relocs into the output file. */
if (strip)
{
- asection **spp;
-
- for (spp = &s->output_section->owner->sections;
- *spp != s->output_section;
- spp = &(*spp)->next)
- ;
- *spp = s->output_section->next;
- --s->output_section->owner->section_count;
-
+ _bfd_strip_section_from_output (info, s);
continue;
}
/* Allocate memory for the section contents. */
- s->contents = (bfd_byte *) bfd_alloc (dynobj, s->_raw_size);
+ /* FIXME: This should be a call to bfd_alloc not bfd_zalloc.
+ Unused entries should be reclaimed before the section's contents
+ are written out, but at the moment this does not happen. Thus in
+ order to prevent writing out garbage, we initialise the section's
+ contents to zero. */
+ s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size);
if (s->contents == NULL && s->_raw_size != 0)
- return false;
+ return FALSE;
}
if (elf_hash_table (info)->dynamic_sections_created)
must add the entries now so that we get the correct size for
the .dynamic section. The DT_DEBUG entry is filled in by the
dynamic linker and used by the debugger. */
- if (! info->shared)
- {
- if (! bfd_elf32_add_dynamic_entry (info, DT_DEBUG, 0))
- return false;
- }
-
- if (! bfd_elf32_add_dynamic_entry (info, DT_PLTGOT, 0))
- return false;
+#define add_dynamic_entry(TAG, VAL) \
+ bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL))
- if (relplt)
+ if (!info->shared)
{
- if (! bfd_elf32_add_dynamic_entry (info, DT_PLTRELSZ, 0)
- || ! bfd_elf32_add_dynamic_entry (info, DT_PLTREL, DT_RELA)
- || ! bfd_elf32_add_dynamic_entry (info, DT_JMPREL, 0))
- return false;
+ if (!add_dynamic_entry (DT_DEBUG, 0))
+ return FALSE;
}
- if (! bfd_elf32_add_dynamic_entry (info, DT_RELA, 0)
- || ! bfd_elf32_add_dynamic_entry (info, DT_RELASZ, 0)
- || ! bfd_elf32_add_dynamic_entry (info, DT_RELAENT,
- sizeof (Elf32_External_Rela)))
- return false;
-
- if (reltext)
+ if (relplt)
{
- if (! bfd_elf32_add_dynamic_entry (info, DT_TEXTREL, 0))
- return false;
+ 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 we are generating a shared library, we generate a section
- symbol for each output section. These are local symbols, which
- means that they must come first in the dynamic symbol table.
- That means we must increment the dynamic symbol index of every
- other dynamic symbol. */
- if (info->shared)
- {
- int c, i;
-
- c = bfd_count_sections (output_bfd);
- elf_link_hash_traverse (elf_hash_table (info),
- elf32_sparc_adjust_dynindx,
- (PTR) &c);
- elf_hash_table (info)->dynsymcount += c;
+ if (!add_dynamic_entry (DT_RELA, 0)
+ || !add_dynamic_entry (DT_RELASZ, 0)
+ || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
+ return FALSE;
- for (i = 1, s = output_bfd->sections; s != NULL; s = s->next, i++)
+ if (info->flags & DF_TEXTREL)
{
- elf_section_data (s)->dynindx = i;
- /* These symbols will have no names, so we don't need to
- fiddle with dynstr_index. */
+ if (!add_dynamic_entry (DT_TEXTREL, 0))
+ return FALSE;
}
}
+#undef add_dynamic_entry
- return true;
+ return TRUE;
}
-/* Increment the index of a dynamic symbol by a given amount. Called
- via elf_link_hash_traverse. */
+#define SET_SEC_DO_RELAX(section) do { elf_section_data(section)->tdata = (void *)1; } while (0)
+#define SEC_DO_RELAX(section) (elf_section_data(section)->tdata == (void *)1)
-static boolean
-elf32_sparc_adjust_dynindx (h, cparg)
- struct elf_link_hash_entry *h;
- PTR cparg;
+static bfd_boolean
+elf32_sparc_relax_section (abfd, section, link_info, again)
+ bfd *abfd ATTRIBUTE_UNUSED;
+ asection *section ATTRIBUTE_UNUSED;
+ struct bfd_link_info *link_info ATTRIBUTE_UNUSED;
+ bfd_boolean *again;
{
- int *cp = (int *) cparg;
-
- if (h->dynindx != -1)
- h->dynindx += *cp;
- return true;
+ *again = FALSE;
+ SET_SEC_DO_RELAX (section);
+ return TRUE;
}
+/* This is the condition under which finish_dynamic_symbol will be called
+ from elflink.h. If elflink.h doesn't call our finish_dynamic_symbol
+ routine, we'll need to do something about initializing any .plt and .got
+ entries in relocate_section. */
+#define WILL_CALL_FINISH_DYNAMIC_SYMBOL(DYN, INFO, H) \
+ ((DYN) \
+ && ((INFO)->shared \
+ || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) == 0) \
+ && ((H)->dynindx != -1 \
+ || ((H)->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0))
+
/* Relocate a SPARC ELF section. */
-static boolean
+static bfd_boolean
elf32_sparc_relocate_section (output_bfd, info, input_bfd, input_section,
contents, relocs, local_syms, local_sections)
bfd *output_bfd;
Elf_Internal_Shdr *symtab_hdr;
struct elf_link_hash_entry **sym_hashes;
bfd_vma *local_got_offsets;
+ bfd_vma got_base;
asection *sgot;
asection *splt;
asection *sreloc;
Elf_Internal_Rela *rel;
Elf_Internal_Rela *relend;
+ if (info->relocateable)
+ return TRUE;
+
dynobj = elf_hash_table (info)->dynobj;
symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr;
sym_hashes = elf_sym_hashes (input_bfd);
local_got_offsets = elf_local_got_offsets (input_bfd);
+ if (elf_hash_table (info)->hgot == NULL)
+ got_base = 0;
+ else
+ got_base = elf_hash_table (info)->hgot->root.u.def.value;
+
sgot = NULL;
splt = NULL;
sreloc = NULL;
struct elf_link_hash_entry *h;
Elf_Internal_Sym *sym;
asection *sec;
- bfd_vma relocation;
+ bfd_vma relocation, off;
bfd_reloc_status_type r;
+ bfd_boolean is_plt = FALSE;
+ bfd_boolean unresolved_reloc;
r_type = ELF32_R_TYPE (rel->r_info);
- if (r_type < 0 || r_type >= (int) R_SPARC_max)
- {
- bfd_set_error (bfd_error_bad_value);
- return false;
- }
- howto = elf_sparc_howto_table + r_type;
- r_symndx = ELF32_R_SYM (rel->r_info);
+ if (r_type == R_SPARC_GNU_VTINHERIT
+ || r_type == R_SPARC_GNU_VTENTRY)
+ continue;
- if (info->relocateable)
+ if (r_type < 0 || r_type >= (int) R_SPARC_max_std)
{
- /* This is a relocateable link. We don't have to change
- anything, unless the reloc is against a section symbol,
- in which case we have to adjust according to where the
- section symbol winds up in the output section. */
- if (r_symndx < symtab_hdr->sh_info)
- {
- sym = local_syms + r_symndx;
- if (ELF_ST_TYPE (sym->st_info) == STT_SECTION)
- {
- sec = local_sections[r_symndx];
- rel->r_addend += sec->output_offset + sym->st_value;
- }
- }
-
- continue;
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
}
+ howto = _bfd_sparc_elf_howto_table + r_type;
/* This is a final link. */
+ r_symndx = ELF32_R_SYM (rel->r_info);
h = NULL;
sym = NULL;
sec = NULL;
+ unresolved_reloc = FALSE;
if (r_symndx < symtab_hdr->sh_info)
{
sym = local_syms + r_symndx;
sec = local_sections[r_symndx];
- relocation = (sec->output_section->vma
- + sec->output_offset
- + sym->st_value);
+ relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel);
}
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;
+
+ relocation = 0;
if (h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
{
sec = h->root.u.def.section;
- if ((r_type == R_SPARC_WPLT30
- && h->plt_offset != (bfd_vma) -1)
- || ((r_type == R_SPARC_GOT10
- || r_type == R_SPARC_GOT13
- || r_type == R_SPARC_GOT22)
- && elf_hash_table (info)->dynamic_sections_created
- && (! info->shared
- || ! info->symbolic
- || (h->elf_link_hash_flags
- & ELF_LINK_HASH_DEF_REGULAR) == 0))
- || (info->shared
- && (input_section->flags & SEC_ALLOC) != 0
- && (r_type == R_SPARC_8
- || r_type == R_SPARC_16
- || r_type == R_SPARC_32
- || r_type == R_SPARC_DISP8
- || r_type == R_SPARC_DISP16
- || r_type == R_SPARC_DISP32
- || r_type == R_SPARC_WDISP30
- || r_type == R_SPARC_WDISP22
- || r_type == R_SPARC_HI22
- || r_type == R_SPARC_22
- || r_type == R_SPARC_13
- || r_type == R_SPARC_LO10
- || r_type == R_SPARC_UA32
- || ((r_type == R_SPARC_PC10
- || r_type == R_SPARC_PC22)
- && strcmp (h->root.root.string,
- "_GLOBAL_OFFSET_TABLE_") != 0))))
- {
- /* In these cases, we don't need the relocation
- value. We check specially because in some
- obscure cases sec->output_section will be NULL. */
- relocation = 0;
- }
+ if (sec->output_section == NULL)
+ /* Set a flag that will be cleared later if we find a
+ relocation value for this symbol. output_section
+ is typically NULL for symbols satisfied by a shared
+ library. */
+ unresolved_reloc = TRUE;
else
relocation = (h->root.u.def.value
+ sec->output_section->vma
+ sec->output_offset);
}
else if (h->root.type == bfd_link_hash_undefweak)
- relocation = 0;
- else if (info->shared && !info->symbolic)
- relocation = 0;
+ ;
+ else if (info->shared
+ && (!info->symbolic || info->allow_shlib_undefined)
+ && !info->no_undefined
+ && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
+ ;
else
{
if (! ((*info->callbacks->undefined_symbol)
(info, h->root.root.string, input_bfd,
- input_section, rel->r_offset)))
- return false;
- relocation = 0;
+ input_section, rel->r_offset,
+ (!info->shared || info->no_undefined
+ || ELF_ST_VISIBILITY (h->other)))))
+ return FALSE;
}
}
if (h != NULL)
{
- bfd_vma off;
+ bfd_boolean dyn;
- off = h->got_offset;
+ off = h->got.offset;
BFD_ASSERT (off != (bfd_vma) -1);
+ dyn = elf_hash_table (info)->dynamic_sections_created;
- if (! elf_hash_table (info)->dynamic_sections_created
+ if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info, h)
|| (info->shared
- && info->symbolic
+ && (info->symbolic
+ || h->dynindx == -1
+ || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL))
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)))
{
/* This is actually a static link, or it is a
-Bsymbolic link and the symbol is defined
- locally. 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
+ locally, or the symbol was forced to be local
+ because of a version file. We must initialize
+ this entry in the global offset table. Since the
+ offset must always be a multiple of 4, we use the
+ least significant bit to record whether we have
initialized it already.
When doing a dynamic link, we create a .rela.got
{
bfd_put_32 (output_bfd, relocation,
sgot->contents + off);
- h->got_offset |= 1;
+ h->got.offset |= 1;
}
}
-
- relocation = sgot->output_offset + off;
+ else
+ unresolved_reloc = FALSE;
}
else
{
- bfd_vma off;
-
BFD_ASSERT (local_got_offsets != NULL
&& local_got_offsets[r_symndx] != (bfd_vma) -1);
off &= ~1;
else
{
- bfd_put_32 (output_bfd, relocation, sgot->contents + off);
if (info->shared)
{
- asection *srelgot;
+ asection *s;
Elf_Internal_Rela outrel;
+ bfd_byte *loc;
/* We need to generate a R_SPARC_RELATIVE reloc
for the dynamic linker. */
- srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
- BFD_ASSERT (srelgot != NULL);
+ s = bfd_get_section_by_name (dynobj, ".rela.got");
+ BFD_ASSERT (s != NULL);
outrel.r_offset = (sgot->output_section->vma
+ sgot->output_offset
+ off);
outrel.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
- outrel.r_addend = 0;
- bfd_elf32_swap_reloca_out (output_bfd, &outrel,
- (((Elf32_External_Rela *)
- srelgot->contents)
- + srelgot->reloc_count));
- ++srelgot->reloc_count;
+ outrel.r_addend = relocation;
+ relocation = 0;
+ loc = s->contents;
+ loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
}
+ bfd_put_32 (output_bfd, relocation, sgot->contents + off);
local_got_offsets[r_symndx] |= 1;
}
-
- relocation = sgot->output_offset + off;
}
-
+ relocation = sgot->output_offset + off - got_base;
break;
+ case R_SPARC_PLT32:
+ if (h == NULL || h->plt.offset == (bfd_vma) -1)
+ {
+ r_type = R_SPARC_32;
+ goto r_sparc_plt32;
+ }
+ /* Fall through. */
case R_SPARC_WPLT30:
/* Relocation is to the entry for this symbol in the
procedure linkage table. */
- BFD_ASSERT (h != NULL);
- if (h->plt_offset == (bfd_vma) -1)
+ /* The Solaris native assembler will generate a WPLT30 reloc
+ for a local symbol if you assemble a call from one
+ section to another when using -K pic. We treat it as
+ WDISP30. */
+ if (h == NULL)
+ break;
+
+ if (h->plt.offset == (bfd_vma) -1)
{
/* We didn't make a PLT entry for this symbol. This
happens when statically linking PIC code, or when
relocation = (splt->output_section->vma
+ splt->output_offset
- + h->plt_offset);
+ + h->plt.offset);
+ unresolved_reloc = FALSE;
+ if (r_type == R_SPARC_PLT32)
+ {
+ r_type = R_SPARC_32;
+ is_plt = TRUE;
+ goto r_sparc_plt32;
+ }
break;
case R_SPARC_PC10:
case R_SPARC_DISP32:
case R_SPARC_WDISP30:
case R_SPARC_WDISP22:
- if (h == NULL)
+ case R_SPARC_WDISP19:
+ case R_SPARC_WDISP16:
+ if (h == NULL
+ || (info->symbolic
+ && (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) != 0))
break;
/* Fall through. */
case R_SPARC_8:
case R_SPARC_22:
case R_SPARC_13:
case R_SPARC_LO10:
+ case R_SPARC_UA16:
case R_SPARC_UA32:
+ r_sparc_plt32:
if (info->shared
- && (input_section->flags & SEC_ALLOC) != 0)
+ && r_symndx != 0
+ && (input_section->flags & SEC_ALLOC))
{
Elf_Internal_Rela outrel;
+ bfd_byte *loc;
+ bfd_boolean skip, relocate = FALSE;
/* When generating a shared object, these relocations
are copied into the output file to be resolved at run
elf_elfheader (input_bfd)->e_shstrndx,
elf_section_data (input_section)->rel_hdr.sh_name));
if (name == NULL)
- return false;
+ return FALSE;
BFD_ASSERT (strncmp (name, ".rela", 5) == 0
&& strcmp (bfd_get_section_name (input_bfd,
BFD_ASSERT (sreloc != NULL);
}
- outrel.r_offset = (rel->r_offset
- + input_section->output_section->vma
- + input_section->output_offset);
- if (h != NULL)
+ skip = 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)
+ skip = TRUE, relocate = TRUE;
+ outrel.r_offset += (input_section->output_section->vma
+ + input_section->output_offset);
+
+ /* Optimize unaligned reloc usage now that we know where
+ it finally resides. */
+ switch (r_type)
+ {
+ case R_SPARC_16:
+ if (outrel.r_offset & 1)
+ r_type = R_SPARC_UA16;
+ break;
+ case R_SPARC_UA16:
+ if (!(outrel.r_offset & 1))
+ r_type = R_SPARC_16;
+ break;
+ case R_SPARC_32:
+ if (outrel.r_offset & 3)
+ r_type = R_SPARC_UA32;
+ break;
+ case R_SPARC_UA32:
+ if (!(outrel.r_offset & 3))
+ r_type = R_SPARC_32;
+ break;
+ case R_SPARC_DISP8:
+ case R_SPARC_DISP16:
+ case R_SPARC_DISP32:
+ /* If the symbol is not dynamic, we should not keep
+ a dynamic relocation. But an .rela.* slot has been
+ allocated for it, output R_SPARC_NONE.
+ FIXME: Add code tracking needed dynamic relocs as
+ e.g. i386 has. */
+ if (h->dynindx == -1)
+ skip = TRUE, relocate = TRUE;
+ break;
+ }
+
+ if (skip)
+ memset (&outrel, 0, sizeof outrel);
+ /* h->dynindx may be -1 if the symbol was marked to
+ become local. */
+ else if (h != NULL && ! is_plt
+ && ((! info->symbolic && h->dynindx != -1)
+ || (h->elf_link_hash_flags
+ & ELF_LINK_HASH_DEF_REGULAR) == 0))
{
BFD_ASSERT (h->dynindx != -1);
outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
{
long indx;
- sym = local_syms + r_symndx;
- sec = local_sections[r_symndx];
+ if (is_plt)
+ sec = splt;
+ else if (h == NULL)
+ sec = local_sections[r_symndx];
+ else
+ {
+ BFD_ASSERT (h->root.type == bfd_link_hash_defined
+ || (h->root.type
+ == bfd_link_hash_defweak));
+ sec = h->root.u.def.section;
+ }
if (sec != NULL && bfd_is_abs_section (sec))
indx = 0;
else if (sec == NULL || sec->owner == NULL)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
else
{
osec = sec->output_section;
indx = elf_section_data (osec)->dynindx;
+
+ /* FIXME: we really should be able to link non-pic
+ shared libraries. */
if (indx == 0)
- abort ();
+ {
+ BFD_FAIL ();
+ (*_bfd_error_handler)
+ (_("%s: probably compiled without -fPIC?"),
+ bfd_archive_filename (input_bfd));
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
+ }
}
outrel.r_info = ELF32_R_INFO (indx, r_type);
}
}
- bfd_elf32_swap_reloca_out (output_bfd, &outrel,
- (((Elf32_External_Rela *)
- sreloc->contents)
- + sreloc->reloc_count));
- ++sreloc->reloc_count;
+ 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. */
- continue;
+ if (! relocate)
+ continue;
}
+ break;
default:
break;
- }
+ }
+
+ /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
+ because such sections are not SEC_ALLOC and thus ld.so will
+ not process them. */
+ if (unresolved_reloc
+ && !((input_section->flags & SEC_DEBUGGING) != 0
+ && (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0))
+ (*_bfd_error_handler)
+ (_("%s(%s+0x%lx): unresolvable relocation against symbol `%s'"),
+ bfd_archive_filename (input_bfd),
+ bfd_get_section_name (input_bfd, input_section),
+ (long) rel->r_offset,
+ h->root.root.string);
+
+ r = bfd_reloc_continue;
+ if (r_type == R_SPARC_WDISP16)
+ {
+ bfd_vma x;
+
+ relocation += rel->r_addend;
+ relocation -= (input_section->output_section->vma
+ + input_section->output_offset);
+ relocation -= rel->r_offset;
+
+ x = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ x |= ((((relocation >> 2) & 0xc000) << 6)
+ | ((relocation >> 2) & 0x3fff));
+ bfd_put_32 (input_bfd, x, contents + rel->r_offset);
+
+ if ((bfd_signed_vma) relocation < - 0x40000
+ || (bfd_signed_vma) relocation > 0x3ffff)
+ r = bfd_reloc_overflow;
+ else
+ r = bfd_reloc_ok;
+ }
+ else if (r_type == R_SPARC_REV32)
+ {
+ bfd_vma x;
+
+ relocation = relocation + rel->r_addend;
+
+ x = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ x = x + relocation;
+ bfd_putl32 (/*input_bfd,*/ x, contents + rel->r_offset);
+ r = bfd_reloc_ok;
+ }
+ else if ((r_type == R_SPARC_WDISP30 || r_type == R_SPARC_WPLT30)
+ && SEC_DO_RELAX (input_section)
+ && rel->r_offset + 4 < input_section->_raw_size)
+ {
+#define G0 0
+#define O7 15
+#define XCC (2 << 20)
+#define COND(x) (((x)&0xf)<<25)
+#define CONDA COND(0x8)
+#define INSN_BPA (F2(0,1) | CONDA | BPRED | XCC)
+#define INSN_BA (F2(0,2) | CONDA)
+#define INSN_OR F3(2, 0x2, 0)
+#define INSN_NOP F2(0,4)
+
+ bfd_vma x, y;
+
+ /* If the instruction is a call with either:
+ restore
+ arithmetic instruction with rd == %o7
+ where rs1 != %o7 and rs2 if it is register != %o7
+ then we can optimize if the call destination is near
+ by changing the call into a branch always. */
+ x = bfd_get_32 (input_bfd, contents + rel->r_offset);
+ y = bfd_get_32 (input_bfd, contents + rel->r_offset + 4);
+ if ((x & OP(~0)) == OP(1) && (y & OP(~0)) == OP(2))
+ {
+ if (((y & OP3(~0)) == OP3(0x3d) /* restore */
+ || ((y & OP3(0x28)) == 0 /* arithmetic */
+ && (y & RD(~0)) == RD(O7)))
+ && (y & RS1(~0)) != RS1(O7)
+ && ((y & F3I(~0))
+ || (y & RS2(~0)) != RS2(O7)))
+ {
+ bfd_vma reloc;
+
+ reloc = relocation + rel->r_addend - rel->r_offset;
+ reloc -= (input_section->output_section->vma
+ + input_section->output_offset);
+
+ /* Ensure the reloc fits into simm22. */
+ if ((reloc & 3) == 0
+ && ((reloc & ~(bfd_vma)0x7fffff) == 0
+ || ((reloc | 0x7fffff) == ~(bfd_vma)0)))
+ {
+ reloc >>= 2;
- r = _bfd_final_link_relocate (howto, input_bfd, input_section,
- contents, rel->r_offset,
- relocation, rel->r_addend);
+ /* Check whether it fits into simm19 on v9. */
+ if (((reloc & 0x3c0000) == 0
+ || (reloc & 0x3c0000) == 0x3c0000)
+ && (elf_elfheader (output_bfd)->e_flags & EF_SPARC_32PLUS))
+ x = INSN_BPA | (reloc & 0x7ffff); /* ba,pt %xcc */
+ else
+ x = INSN_BA | (reloc & 0x3fffff); /* ba */
+ bfd_put_32 (input_bfd, x, contents + rel->r_offset);
+ r = bfd_reloc_ok;
+ if (rel->r_offset >= 4
+ && (y & (0xffffffff ^ RS1(~0)))
+ == (INSN_OR | RD(O7) | RS2(G0)))
+ {
+ bfd_vma z;
+ unsigned int reg;
+
+ z = bfd_get_32 (input_bfd,
+ contents + rel->r_offset - 4);
+ if ((z & (0xffffffff ^ RD(~0)))
+ != (INSN_OR | RS1(O7) | RS2(G0)))
+ break;
+
+ /* The sequence was
+ or %o7, %g0, %rN
+ call foo
+ or %rN, %g0, %o7
+
+ If call foo was replaced with ba, replace
+ or %rN, %g0, %o7 with nop. */
+
+ reg = (y & RS1(~0)) >> 14;
+ if (reg != ((z & RD(~0)) >> 25)
+ || reg == G0 || reg == O7)
+ break;
+
+ bfd_put_32 (input_bfd, (bfd_vma) INSN_NOP,
+ contents + rel->r_offset + 4);
+ }
+
+ }
+ }
+ }
+ }
+
+ if (r == bfd_reloc_continue)
+ r = _bfd_final_link_relocate (howto, input_bfd, input_section,
+ contents, rel->r_offset,
+ relocation, rel->r_addend);
if (r != bfd_reloc_ok)
{
symtab_hdr->sh_link,
sym->st_name);
if (name == NULL)
- return false;
+ return FALSE;
if (*name == '\0')
name = bfd_section_name (input_bfd, sec);
}
if (! ((*info->callbacks->reloc_overflow)
(info, name, howto->name, (bfd_vma) 0,
input_bfd, input_section, rel->r_offset)))
- return false;
+ return FALSE;
}
break;
}
}
}
- return true;
+ return TRUE;
}
/* Finish up dynamic symbol handling. We set the contents of various
dynamic sections here. */
-static boolean
+static bfd_boolean
elf32_sparc_finish_dynamic_symbol (output_bfd, info, h, sym)
bfd *output_bfd;
struct bfd_link_info *info;
dynobj = elf_hash_table (info)->dynobj;
- if (h->plt_offset != (bfd_vma) -1)
+ if (h->plt.offset != (bfd_vma) -1)
{
asection *splt;
asection *srela;
Elf_Internal_Rela rela;
+ bfd_byte *loc;
/* This symbol has an entry in the procedure linkage table. Set
it up. */
/* Fill in the entry in the procedure linkage table. */
bfd_put_32 (output_bfd,
- PLT_ENTRY_WORD0 + h->plt_offset,
- splt->contents + h->plt_offset);
+ PLT_ENTRY_WORD0 + h->plt.offset,
+ splt->contents + h->plt.offset);
bfd_put_32 (output_bfd,
(PLT_ENTRY_WORD1
- + (((- (h->plt_offset + 4)) >> 2) & 0x3fffff)),
- splt->contents + h->plt_offset + 4);
- bfd_put_32 (output_bfd, PLT_ENTRY_WORD2,
- splt->contents + h->plt_offset + 8);
+ + (((- (h->plt.offset + 4)) >> 2) & 0x3fffff)),
+ splt->contents + h->plt.offset + 4);
+ bfd_put_32 (output_bfd, (bfd_vma) PLT_ENTRY_WORD2,
+ splt->contents + h->plt.offset + 8);
/* Fill in the entry in the .rela.plt section. */
rela.r_offset = (splt->output_section->vma
+ splt->output_offset
- + h->plt_offset);
+ + h->plt.offset);
rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_JMP_SLOT);
rela.r_addend = 0;
- bfd_elf32_swap_reloca_out (output_bfd, &rela,
- ((Elf32_External_Rela *) srela->contents
- + h->plt_offset / PLT_ENTRY_SIZE - 4));
+ loc = srela->contents;
+ loc += (h->plt.offset / PLT_ENTRY_SIZE - 4) * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0)
{
/* Mark the symbol as undefined, rather than as defined in
the .plt section. Leave the value alone. */
sym->st_shndx = SHN_UNDEF;
+ /* If 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->elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR_NONWEAK)
+ == 0)
+ sym->st_value = 0;
}
}
- if (h->got_offset != (bfd_vma) -1)
+ if (h->got.offset != (bfd_vma) -1)
{
asection *sgot;
asection *srela;
Elf_Internal_Rela rela;
+ bfd_byte *loc;
/* This symbol has an entry in the global offset table. Set it
up. */
- BFD_ASSERT (h->dynindx != -1);
-
sgot = bfd_get_section_by_name (dynobj, ".got");
srela = bfd_get_section_by_name (dynobj, ".rela.got");
BFD_ASSERT (sgot != NULL && srela != NULL);
rela.r_offset = (sgot->output_section->vma
+ sgot->output_offset
- + (h->got_offset &~ 1));
+ + (h->got.offset &~ (bfd_vma) 1));
/* If this is a -Bsymbolic link, and the symbol is defined
- locally, 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. */
+ locally, we just want to emit a RELATIVE reloc. Likewise if
+ the symbol was forced to be local because of a version file.
+ The entry in the global offset table will already have been
+ initialized in the relocate_section function. */
if (info->shared
- && info->symbolic
+ && (info->symbolic || h->dynindx == -1)
&& (h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))
- rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
+ {
+ asection *sec = h->root.u.def.section;
+ rela.r_info = ELF32_R_INFO (0, R_SPARC_RELATIVE);
+ rela.r_addend = (h->root.u.def.value
+ + sec->output_section->vma
+ + sec->output_offset);
+ }
else
{
- bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got_offset);
rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_GLOB_DAT);
+ rela.r_addend = 0;
}
- rela.r_addend = 0;
- bfd_elf32_swap_reloca_out (output_bfd, &rela,
- ((Elf32_External_Rela *) srela->contents
- + srela->reloc_count));
- ++srela->reloc_count;
+ bfd_put_32 (output_bfd, (bfd_vma) 0,
+ sgot->contents + (h->got.offset &~ (bfd_vma) 1));
+ loc = srela->contents;
+ loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
}
if ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_COPY) != 0)
{
asection *s;
Elf_Internal_Rela rela;
+ bfd_byte *loc;
/* This symbols needs a copy reloc. Set it up. */
+ h->root.u.def.section->output_offset);
rela.r_info = ELF32_R_INFO (h->dynindx, R_SPARC_COPY);
rela.r_addend = 0;
- bfd_elf32_swap_reloca_out (output_bfd, &rela,
- ((Elf32_External_Rela *) s->contents
- + s->reloc_count));
- ++s->reloc_count;
+ loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
+ bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
}
/* Mark some specially defined symbols as absolute. */
|| strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0)
sym->st_shndx = SHN_ABS;
- return true;
+ return TRUE;
}
/* Finish up the dynamic sections. */
-static boolean
+static bfd_boolean
elf32_sparc_finish_dynamic_sections (output_bfd, info)
bfd *output_bfd;
struct bfd_link_info *info;
{
Elf_Internal_Dyn dyn;
const char *name;
- boolean size;
+ bfd_boolean size;
bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
switch (dyn.d_tag)
{
- case DT_PLTGOT: name = ".plt"; size = false; break;
- case DT_PLTRELSZ: name = ".rela.plt"; size = true; break;
- case DT_JMPREL: name = ".rela.plt"; size = false; break;
- default: name = NULL; size = false; break;
+ case DT_PLTGOT: name = ".plt"; size = FALSE; break;
+ case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break;
+ case DT_JMPREL: name = ".rela.plt"; size = FALSE; break;
+ default: name = NULL; size = FALSE; break;
}
if (name != NULL)
if (splt->_raw_size > 0)
{
memset (splt->contents, 0, 4 * PLT_ENTRY_SIZE);
- bfd_put_32 (output_bfd, SPARC_NOP,
+ bfd_put_32 (output_bfd, (bfd_vma) SPARC_NOP,
splt->contents + splt->_raw_size - 4);
}
elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
- if (info->shared)
- {
- asection *sdynsym;
- asection *s;
- Elf_Internal_Sym sym;
+ return TRUE;
+}
+\f
+/* Functions for dealing with the e_flags field.
- /* Set up the section symbols for the output sections. */
+ We don't define set_private_flags or copy_private_bfd_data because
+ the only currently defined values are based on the bfd mach number,
+ so we use the latter instead and defer setting e_flags until the
+ file is written out. */
- sdynsym = bfd_get_section_by_name (dynobj, ".dynsym");
- BFD_ASSERT (sdynsym != NULL);
+/* Merge backend specific data from an object file to the output
+ object file when linking. */
- sym.st_size = 0;
- sym.st_name = 0;
- sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION);
- sym.st_other = 0;
+static bfd_boolean
+elf32_sparc_merge_private_bfd_data (ibfd, obfd)
+ bfd *ibfd;
+ bfd *obfd;
+{
+ bfd_boolean error;
+ /* FIXME: This should not be static. */
+ static unsigned long previous_ibfd_e_flags = (unsigned long) -1;
- for (s = output_bfd->sections; s != NULL; s = s->next)
- {
- int indx;
+ if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
+ || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
+ return TRUE;
- sym.st_value = s->vma;
+ error = FALSE;
- indx = elf_section_data (s)->this_idx;
- BFD_ASSERT (indx > 0);
- sym.st_shndx = indx;
+ if (bfd_get_mach (ibfd) >= bfd_mach_sparc_v9)
+ {
+ error = TRUE;
+ (*_bfd_error_handler)
+ (_("%s: compiled for a 64 bit system and target is 32 bit"),
+ bfd_archive_filename (ibfd));
+ }
+ else if ((ibfd->flags & DYNAMIC) == 0)
+ {
+ if (bfd_get_mach (obfd) < bfd_get_mach (ibfd))
+ bfd_set_arch_mach (obfd, bfd_arch_sparc, bfd_get_mach (ibfd));
+ }
- bfd_elf32_swap_symbol_out (output_bfd, &sym,
- (PTR) (((Elf32_External_Sym *)
- sdynsym->contents)
- + elf_section_data (s)->dynindx));
- }
+ if (((elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA)
+ != previous_ibfd_e_flags)
+ && previous_ibfd_e_flags != (unsigned long) -1)
+ {
+ (*_bfd_error_handler)
+ (_("%s: linking little endian files with big endian files"),
+ bfd_archive_filename (ibfd));
+ error = TRUE;
+ }
+ previous_ibfd_e_flags = elf_elfheader (ibfd)->e_flags & EF_SPARC_LEDATA;
- /* Set the sh_info field of the output .dynsym section to the
- index of the first global symbol. */
- elf_section_data (sdynsym->output_section)->this_hdr.sh_info =
- bfd_count_sections (output_bfd) + 1;
+ if (error)
+ {
+ bfd_set_error (bfd_error_bad_value);
+ return FALSE;
}
- return true;
+ return TRUE;
+}
+\f
+/* Set the right machine number. */
+
+static bfd_boolean
+elf32_sparc_object_p (abfd)
+ bfd *abfd;
+{
+ if (elf_elfheader (abfd)->e_machine == EM_SPARC32PLUS)
+ {
+ if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US3)
+ return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
+ bfd_mach_sparc_v8plusb);
+ else if (elf_elfheader (abfd)->e_flags & EF_SPARC_SUN_US1)
+ return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
+ bfd_mach_sparc_v8plusa);
+ else if (elf_elfheader (abfd)->e_flags & EF_SPARC_32PLUS)
+ return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
+ bfd_mach_sparc_v8plus);
+ else
+ return FALSE;
+ }
+ else if (elf_elfheader (abfd)->e_flags & EF_SPARC_LEDATA)
+ return bfd_default_set_arch_mach (abfd, bfd_arch_sparc,
+ bfd_mach_sparc_sparclite_le);
+ else
+ return bfd_default_set_arch_mach (abfd, bfd_arch_sparc, bfd_mach_sparc);
+}
+
+/* The final processing done just before writing out the object file.
+ We need to set the e_machine field appropriately. */
+
+static void
+elf32_sparc_final_write_processing (abfd, linker)
+ bfd *abfd;
+ bfd_boolean linker ATTRIBUTE_UNUSED;
+{
+ switch (bfd_get_mach (abfd))
+ {
+ case bfd_mach_sparc :
+ break; /* nothing to do */
+ case bfd_mach_sparc_v8plus :
+ elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
+ elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
+ elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS;
+ break;
+ case bfd_mach_sparc_v8plusa :
+ elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
+ elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
+ elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1;
+ break;
+ case bfd_mach_sparc_v8plusb :
+ elf_elfheader (abfd)->e_machine = EM_SPARC32PLUS;
+ elf_elfheader (abfd)->e_flags &=~ EF_SPARC_32PLUS_MASK;
+ elf_elfheader (abfd)->e_flags |= EF_SPARC_32PLUS | EF_SPARC_SUN_US1
+ | EF_SPARC_SUN_US3;
+ break;
+ case bfd_mach_sparc_sparclite_le :
+ elf_elfheader (abfd)->e_machine = EM_SPARC;
+ elf_elfheader (abfd)->e_flags |= EF_SPARC_LEDATA;
+ break;
+ default :
+ abort ();
+ break;
+ }
}
+static enum elf_reloc_type_class
+elf32_sparc_reloc_type_class (rela)
+ const Elf_Internal_Rela *rela;
+{
+ switch ((int) ELF32_R_TYPE (rela->r_info))
+ {
+ case R_SPARC_RELATIVE:
+ return reloc_class_relative;
+ case R_SPARC_JMP_SLOT:
+ return reloc_class_plt;
+ case R_SPARC_COPY:
+ return reloc_class_copy;
+ default:
+ return reloc_class_normal;
+ }
+}
+\f
#define TARGET_BIG_SYM bfd_elf32_sparc_vec
#define TARGET_BIG_NAME "elf32-sparc"
#define ELF_ARCH bfd_arch_sparc
#define ELF_MACHINE_CODE EM_SPARC
-/* start-sanitize-v8plus */
#define ELF_MACHINE_ALT1 EM_SPARC32PLUS
-/* end-sanitize-v8plus */
#define ELF_MAXPAGESIZE 0x10000
+
+#define bfd_elf32_bfd_reloc_type_lookup elf32_sparc_reloc_type_lookup
+#define bfd_elf32_bfd_relax_section elf32_sparc_relax_section
+#define elf_info_to_howto elf32_sparc_info_to_howto
#define elf_backend_create_dynamic_sections \
_bfd_elf_create_dynamic_sections
#define elf_backend_check_relocs elf32_sparc_check_relocs
elf32_sparc_finish_dynamic_symbol
#define elf_backend_finish_dynamic_sections \
elf32_sparc_finish_dynamic_sections
+#define bfd_elf32_bfd_merge_private_bfd_data \
+ elf32_sparc_merge_private_bfd_data
+#define elf_backend_object_p elf32_sparc_object_p
+#define elf_backend_final_write_processing \
+ elf32_sparc_final_write_processing
+#define elf_backend_gc_mark_hook elf32_sparc_gc_mark_hook
+#define elf_backend_gc_sweep_hook elf32_sparc_gc_sweep_hook
+#define elf_backend_reloc_type_class elf32_sparc_reloc_type_class
+
+#define elf_backend_can_gc_sections 1
#define elf_backend_want_got_plt 0
#define elf_backend_plt_readonly 0
#define elf_backend_want_plt_sym 1
+#define elf_backend_got_header_size 4
+#define elf_backend_plt_header_size (4*PLT_ENTRY_SIZE)
+#define elf_backend_rela_normal 1
#include "elf32-target.h"
projects / deliverable / binutils-gdb.git / blobdiff