/* MIPS-specific support for 32-bit ELF
- Copyright (C) 1993-2018 Free Software Foundation, Inc.
+ Copyright (C) 1993-2020 Free Software Foundation, Inc.
Most of the information added by Ian Lance Taylor, Cygnus Support,
<ian@cygnus.com>.
(bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup
(bfd *, bfd_reloc_code_real_type);
-static void mips_info_to_howto_rel
+static bfd_boolean mips_info_to_howto_rel
(bfd *, arelent *, Elf_Internal_Rela *);
-static void mips_info_to_howto_rela
+static bfd_boolean mips_info_to_howto_rela
(bfd *, arelent *, Elf_Internal_Rela *);
static bfd_boolean mips_elf_sym_is_global
(bfd *, asymbol *);
0, /* src_mask */
0x00000000, /* dst_mask */
FALSE), /* pcrel_offset */
+
+ /* Low 16 bits of symbol value. Note that the high 16 bits of symbol values
+ must be zero. This is used for relaxation. */
+ HOWTO (R_MICROMIPS_HI0_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_HI0_LO16",/* name */
+ TRUE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ EMPTY_HOWTO (158),
+ EMPTY_HOWTO (159),
+ EMPTY_HOWTO (160),
+ EMPTY_HOWTO (161),
+
+ /* TLS general dynamic variable reference. */
+ HOWTO (R_MICROMIPS_TLS_GD, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_GD", /* name */
+ TRUE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* TLS local dynamic variable reference. */
+ HOWTO (R_MICROMIPS_TLS_LDM, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_LDM", /* name */
+ TRUE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* TLS local dynamic offset. */
+ HOWTO (R_MICROMIPS_TLS_DTPREL_HI16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_DTPREL_HI16", /* name */
+ TRUE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* TLS local dynamic offset. */
+ HOWTO (R_MICROMIPS_TLS_DTPREL_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_DTPREL_LO16", /* name */
+ TRUE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* TLS thread pointer offset. */
+ HOWTO (R_MICROMIPS_TLS_GOTTPREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_GOTTPREL", /* name */
+ TRUE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ EMPTY_HOWTO (167),
+ EMPTY_HOWTO (168),
+
+ /* TLS thread pointer offset. */
+ HOWTO (R_MICROMIPS_TLS_TPREL_HI16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_TPREL_HI16", /* name */
+ TRUE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* TLS thread pointer offset. */
+ HOWTO (R_MICROMIPS_TLS_TPREL_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_TPREL_LO16", /* name */
+ TRUE, /* partial_inplace */
+ 0x0000ffff, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ EMPTY_HOWTO (171),
+
+ /* GP- and PC-relative relocations. */
+ HOWTO (R_MICROMIPS_GPREL7_S2, /* type */
+ 2, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 7, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf32_gprel16_reloc, /* special_function */
+ "R_MICROMIPS_GPREL7_S2", /* name */
+ TRUE, /* partial_inplace */
+ 0x0000007f, /* src_mask */
+ 0x0000007f, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MICROMIPS_PC23_S2, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 23, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_PC23_S2", /* name */
+ TRUE, /* partial_inplace */
+ 0x007fffff, /* src_mask */
+ 0x007fffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
};
static reloc_howto_type elf_micromips_howto_table_rela[] =
0, /* src_mask */
0x00000000, /* dst_mask */
FALSE), /* pcrel_offset */
+
+ /* Low 16 bits of symbol value. Note that the high 16 bits of symbol values
+ must be zero. This is used for relaxation. */
+ HOWTO (R_MICROMIPS_HI0_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_dont, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_HI0_LO16",/* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ EMPTY_HOWTO (158),
+ EMPTY_HOWTO (159),
+ EMPTY_HOWTO (160),
+ EMPTY_HOWTO (161),
+
+ /* TLS general dynamic variable reference. */
+ HOWTO (R_MICROMIPS_TLS_GD, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_GD", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* TLS local dynamic variable reference. */
+ HOWTO (R_MICROMIPS_TLS_LDM, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_LDM", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* TLS local dynamic offset. */
+ HOWTO (R_MICROMIPS_TLS_DTPREL_HI16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_DTPREL_HI16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* TLS local dynamic offset. */
+ HOWTO (R_MICROMIPS_TLS_DTPREL_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_DTPREL_LO16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* TLS thread pointer offset. */
+ HOWTO (R_MICROMIPS_TLS_GOTTPREL, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_GOTTPREL", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ EMPTY_HOWTO (167),
+ EMPTY_HOWTO (168),
+
+ /* TLS thread pointer offset. */
+ HOWTO (R_MICROMIPS_TLS_TPREL_HI16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_TPREL_HI16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ /* TLS thread pointer offset. */
+ HOWTO (R_MICROMIPS_TLS_TPREL_LO16, /* type */
+ 0, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 16, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_TLS_TPREL_LO16", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x0000ffff, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ EMPTY_HOWTO (171),
+
+ /* GP- and PC-relative relocations. */
+ HOWTO (R_MICROMIPS_GPREL7_S2, /* type */
+ 2, /* rightshift */
+ 1, /* size (0 = byte, 1 = short, 2 = long) */
+ 7, /* bitsize */
+ FALSE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf32_gprel16_reloc, /* special_function */
+ "R_MICROMIPS_GPREL7_S2", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x0000007f, /* dst_mask */
+ FALSE), /* pcrel_offset */
+
+ HOWTO (R_MICROMIPS_PC23_S2, /* type */
+ 2, /* rightshift */
+ 2, /* size (0 = byte, 1 = short, 2 = long) */
+ 23, /* bitsize */
+ TRUE, /* pc_relative */
+ 0, /* bitpos */
+ complain_overflow_signed, /* complain_on_overflow */
+ _bfd_mips_elf_generic_reloc, /* special_function */
+ "R_MICROMIPS_PC23_S2", /* name */
+ FALSE, /* partial_inplace */
+ 0, /* src_mask */
+ 0x007fffff, /* dst_mask */
+ TRUE), /* pcrel_offset */
};
/* GNU extension to record C++ vtable hierarchy */
{ BFD_RELOC_MICROMIPS_CALL_LO16, R_MICROMIPS_CALL_LO16 - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_SCN_DISP, R_MICROMIPS_SCN_DISP - R_MICROMIPS_min },
{ BFD_RELOC_MICROMIPS_JALR, R_MICROMIPS_JALR - R_MICROMIPS_min },
+ /* There is no BFD reloc for R_MICROMIPS_HI0_LO16. */
+ { BFD_RELOC_MICROMIPS_TLS_GD, R_MICROMIPS_TLS_GD - R_MICROMIPS_min },
+ { BFD_RELOC_MICROMIPS_TLS_LDM, R_MICROMIPS_TLS_LDM - R_MICROMIPS_min },
+ { BFD_RELOC_MICROMIPS_TLS_DTPREL_HI16,
+ R_MICROMIPS_TLS_DTPREL_HI16 - R_MICROMIPS_min },
+ { BFD_RELOC_MICROMIPS_TLS_DTPREL_LO16,
+ R_MICROMIPS_TLS_DTPREL_LO16 - R_MICROMIPS_min },
+ { BFD_RELOC_MICROMIPS_TLS_GOTTPREL,
+ R_MICROMIPS_TLS_GOTTPREL - R_MICROMIPS_min },
+ { BFD_RELOC_MICROMIPS_TLS_TPREL_HI16,
+ R_MICROMIPS_TLS_TPREL_HI16 - R_MICROMIPS_min },
+ { BFD_RELOC_MICROMIPS_TLS_TPREL_LO16,
+ R_MICROMIPS_TLS_TPREL_LO16 - R_MICROMIPS_min },
+ /* There is no BFD reloc for R_MICROMIPS_GPREL7_S2. */
+ /* There is no BFD reloc for R_MICROMIPS_PC23_S2. */
};
/* Given a BFD reloc type, return a howto structure. */
static reloc_howto_type *
mips_elf_n32_rtype_to_howto (bfd *abfd, unsigned int r_type, bfd_boolean rela_p)
{
+ reloc_howto_type *howto = NULL;
+
switch (r_type)
{
case R_MIPS_GNU_VTINHERIT:
if (r_type >= R_MICROMIPS_min && r_type < R_MICROMIPS_max)
{
if (rela_p)
- return &elf_micromips_howto_table_rela[r_type - R_MICROMIPS_min];
+ howto = &elf_micromips_howto_table_rela[r_type - R_MICROMIPS_min];
else
- return &elf_micromips_howto_table_rel[r_type - R_MICROMIPS_min];
+ howto = &elf_micromips_howto_table_rel[r_type - R_MICROMIPS_min];
}
if (r_type >= R_MIPS16_min && r_type < R_MIPS16_max)
{
if (rela_p)
- return &elf_mips16_howto_table_rela[r_type - R_MIPS16_min];
+ howto = &elf_mips16_howto_table_rela[r_type - R_MIPS16_min];
else
- return &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
+ howto = &elf_mips16_howto_table_rel[r_type - R_MIPS16_min];
}
- if (r_type >= R_MIPS_max)
+ if (r_type < R_MIPS_max)
{
- _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
- abfd, r_type);
- bfd_set_error (bfd_error_bad_value);
- r_type = R_MIPS_NONE;
+ if (rela_p)
+ howto = &elf_mips_howto_table_rela[r_type];
+ else
+ howto = &elf_mips_howto_table_rel[r_type];
}
- if (rela_p)
- return &elf_mips_howto_table_rela[r_type];
- else
- return &elf_mips_howto_table_rel[r_type];
- break;
+ if (howto != NULL && howto->name != NULL)
+ return howto;
+
+ _bfd_error_handler (_("%pB: unsupported relocation type %#x"),
+ abfd, r_type);
+ bfd_set_error (bfd_error_bad_value);
+ return NULL;
}
}
/* Given a MIPS Elf_Internal_Rel, fill in an arelent structure. */
-static void
+static bfd_boolean
mips_info_to_howto_rel (bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)
{
unsigned int r_type;
r_type = ELF32_R_TYPE (dst->r_info);
cache_ptr->howto = mips_elf_n32_rtype_to_howto (abfd, r_type, FALSE);
+ if (cache_ptr->howto == NULL)
+ return FALSE;
+
/* The addend for a GPREL16 or LITERAL relocation comes from the GP
value for the object file. We get the addend now, rather than
when we do the relocation, because the symbol manipulations done
if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0
&& (gprel16_reloc_p (r_type) || r_type == (unsigned int) R_MIPS_LITERAL))
cache_ptr->addend = elf_gp (abfd);
+
+ return TRUE;
}
/* Given a MIPS Elf_Internal_Rela, fill in an arelent structure. */
-static void
+static bfd_boolean
mips_info_to_howto_rela (bfd *abfd,
arelent *cache_ptr, Elf_Internal_Rela *dst)
{
r_type = ELF32_R_TYPE (dst->r_info);
cache_ptr->howto = mips_elf_n32_rtype_to_howto (abfd, r_type, TRUE);
cache_ptr->addend = dst->r_addend;
+ return cache_ptr->howto != NULL;
}
\f
/* Determine whether a symbol is global for the purposes of splitting
return (sym->flags & BSF_SECTION_SYM) == 0;
else
return ((sym->flags & (BSF_GLOBAL | BSF_WEAK | BSF_GNU_UNIQUE)) != 0
- || bfd_is_und_section (bfd_get_section (sym))
- || bfd_is_com_section (bfd_get_section (sym)));
+ || bfd_is_und_section (bfd_asymbol_section (sym))
+ || bfd_is_com_section (bfd_asymbol_section (sym)));
}
\f
/* Set the right machine number for a MIPS ELF file. */
#define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook
#define elf_backend_copy_indirect_symbol \
_bfd_mips_elf_copy_indirect_symbol
+#define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol
#define elf_backend_grok_prstatus elf32_mips_grok_prstatus
#define elf_backend_grok_psinfo elf32_mips_grok_psinfo
#define elf_backend_grok_freebsd_prstatus \