Fix handling of null stap semaphores
[deliverable/binutils-gdb.git] / bfd / elfn32-mips.c
index 99c14e7f557a1d807a83a4e76dbea5a63f76257e..71242a55404b21cd500fc4d67acf503a8aca379a 100644 (file)
@@ -1,5 +1,5 @@
 /* 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>.
@@ -2399,6 +2399,166 @@ static reloc_howto_type elf_micromips_howto_table_rel[] =
         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[] =
@@ -2741,6 +2901,166 @@ 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 */
@@ -3291,6 +3611,21 @@ static const struct elf_reloc_map micromips_reloc_map[] =
   { 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.  */
@@ -3506,8 +3841,8 @@ mips_elf_sym_is_global (bfd *abfd ATTRIBUTE_UNUSED, asymbol *sym)
     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.  */
@@ -3801,6 +4136,7 @@ static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = {
 #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 \
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