/* MIPS-specific support for ELF
- Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013
- Free Software Foundation, Inc.
+ Copyright (C) 1993-2014 Free Software Foundation, Inc.
Most of the information added by Ian Lance Taylor, Cygnus Support,
<ian@cygnus.com>.
#include "hashtab.h"
+/* Types of TLS GOT entry. */
+enum mips_got_tls_type {
+ GOT_TLS_NONE,
+ GOT_TLS_GD,
+ GOT_TLS_LDM,
+ GOT_TLS_IE
+};
+
/* This structure is used to hold information about one GOT entry.
There are four types of entry:
struct mips_elf_link_hash_entry *h;
} d;
- /* The TLS type of this GOT entry: GOT_NORMAL, GOT_TLS_IE, GOT_TLS_GD
- or GOT_TLS_LDM. An LDM GOT entry will be a local symbol entry with
- r_symndx == 0. */
-#define GOT_NORMAL 0
-#define GOT_TLS_GD 1
-#define GOT_TLS_LDM 2
-#define GOT_TLS_IE 4
-#define GOT_TLS_TYPE 7
-#define GOT_TLS_DONE 0x80
+ /* The TLS type of this GOT entry. An LDM GOT entry will be a local
+ symbol entry with r_symndx == 0. */
unsigned char tls_type;
+ /* True if we have filled in the GOT contents for a TLS entry,
+ and created the associated relocations. */
+ unsigned char tls_initialized;
+
/* The offset from the beginning of the .got section to the entry
corresponding to this symbol+addend. If it's a global symbol
whose offset is yet to be decided, it's going to be -1. */
long gotidx;
};
+/* This structure represents a GOT page reference from an input bfd.
+ Each instance represents a symbol + ADDEND, where the representation
+ of the symbol depends on whether it is local to the input bfd.
+ If it is, then SYMNDX >= 0, and the symbol has index SYMNDX in U.ABFD.
+ Otherwise, SYMNDX < 0 and U.H points to the symbol's hash table entry.
+
+ Page references with SYMNDX >= 0 always become page references
+ in the output. Page references with SYMNDX < 0 only become page
+ references if the symbol binds locally; in other cases, the page
+ reference decays to a global GOT reference. */
+struct mips_got_page_ref
+{
+ long symndx;
+ union
+ {
+ struct mips_elf_link_hash_entry *h;
+ bfd *abfd;
+ } u;
+ bfd_vma addend;
+};
+
/* This structure describes a range of addends: [MIN_ADDEND, MAX_ADDEND].
The structures form a non-overlapping list that is sorted by increasing
MIN_ADDEND. */
};
/* This structure describes the range of addends that are applied to page
- relocations against a given symbol. */
+ relocations against a given section. */
struct mips_got_page_entry
{
- /* The input bfd in which the symbol is defined. */
- bfd *abfd;
- /* The index of the symbol, as stored in the relocation r_info. */
- long symndx;
+ /* The section that these entries are based on. */
+ asection *sec;
/* The ranges for this page entry. */
struct mips_got_page_range *ranges;
/* The maximum number of page entries needed for RANGES. */
unsigned int page_gotno;
/* The number of relocations needed for the GOT entries. */
unsigned int relocs;
- /* The number of local .got entries we have used. */
- unsigned int assigned_gotno;
+ /* The first unused local .got entry. */
+ unsigned int assigned_low_gotno;
+ /* The last unused local .got entry. */
+ unsigned int assigned_high_gotno;
/* A hash table holding members of the got. */
struct htab *got_entries;
+ /* A hash table holding mips_got_page_ref structures. */
+ struct htab *got_page_refs;
/* A hash table of mips_got_page_entry structures. */
struct htab *got_page_entries;
/* In multi-got links, a pointer to the next got (err, rather, most
long max_non_got_dynindx;
};
+/* We make up to two PLT entries if needed, one for standard MIPS code
+ and one for compressed code, either a MIPS16 or microMIPS one. We
+ keep a separate record of traditional lazy-binding stubs, for easier
+ processing. */
+
+struct plt_entry
+{
+ /* Traditional SVR4 stub offset, or -1 if none. */
+ bfd_vma stub_offset;
+
+ /* Standard PLT entry offset, or -1 if none. */
+ bfd_vma mips_offset;
+
+ /* Compressed PLT entry offset, or -1 if none. */
+ bfd_vma comp_offset;
+
+ /* The corresponding .got.plt index, or -1 if none. */
+ bfd_vma gotplt_index;
+
+ /* Whether we need a standard PLT entry. */
+ unsigned int need_mips : 1;
+
+ /* Whether we need a compressed PLT entry. */
+ unsigned int need_comp : 1;
+};
+
/* The MIPS ELF linker needs additional information for each symbol in
the global hash table. */
/* Does this symbol need a traditional MIPS lazy-binding stub
(as opposed to a PLT entry)? */
unsigned int needs_lazy_stub : 1;
+
+ /* Does this symbol resolve to a PLT entry? */
+ unsigned int use_plt_entry : 1;
};
/* MIPS ELF linker hash table. */
/* True if we can generate copy relocs and PLTs. */
bfd_boolean use_plts_and_copy_relocs;
+ /* True if we can only use 32-bit microMIPS instructions. */
+ bfd_boolean insn32;
+
/* True if we're generating code for VxWorks. */
bfd_boolean is_vxworks;
/* The size of the PLT header in bytes. */
bfd_vma plt_header_size;
- /* The size of a PLT entry in bytes. */
- bfd_vma plt_entry_size;
+ /* The size of a standard PLT entry in bytes. */
+ bfd_vma plt_mips_entry_size;
+
+ /* The size of a compressed PLT entry in bytes. */
+ bfd_vma plt_comp_entry_size;
+
+ /* The offset of the next standard PLT entry to create. */
+ bfd_vma plt_mips_offset;
+
+ /* The offset of the next compressed PLT entry to create. */
+ bfd_vma plt_comp_offset;
+
+ /* The index of the next .got.plt entry to create. */
+ bfd_vma plt_got_index;
/* The number of functions that need a lazy-binding stub. */
bfd_vma lazy_stub_count;
The function returns the new section on success, otherwise it
returns null. */
asection *(*add_stub_section) (const char *, asection *, asection *);
+
+ /* Small local sym cache. */
+ struct sym_cache sym_cache;
+
+ /* Is the PLT header compressed? */
+ unsigned int plt_header_is_comp : 1;
};
/* Get the MIPS ELF linker hash table from a link_info structure. */
/* Input BFD providing Tag_GNU_MIPS_ABI_FP attribute for output. */
bfd *abi_fp_bfd;
+ /* Input BFD providing Tag_GNU_MIPS_ABI_MSA attribute for output. */
+ bfd *abi_msa_bfd;
+
+ /* The abiflags for this object. */
+ Elf_Internal_ABIFlags_v0 abiflags;
+ bfd_boolean abiflags_valid;
+
/* The GOT requirements of input bfds. */
struct mips_got_info *got;
+
+ /* Used by _bfd_mips_elf_find_nearest_line. The structure could be
+ included directly in this one, but there's no point to wasting
+ the memory just for the infrequently called find_nearest_line. */
+ struct mips_elf_find_line *find_line_info;
+
+ /* An array of stub sections indexed by symbol number. */
+ asection **local_stubs;
+ asection **local_call_stubs;
+
+ /* The Irix 5 support uses two virtual sections, which represent
+ text/data symbols defined in dynamic objects. */
+ asymbol *elf_data_symbol;
+ asymbol *elf_text_symbol;
+ asection *elf_data_section;
+ asection *elf_text_section;
};
/* Get MIPS ELF private object data from BFD's tdata. */
#define PIC_OBJECT_P(abfd) \
((elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) != 0)
+/* Nonzero if ABFD is using the O32 ABI. */
+#define ABI_O32_P(abfd) \
+ ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI) == E_MIPS_ABI_O32)
+
/* Nonzero if ABFD is using the N32 ABI. */
#define ABI_N32_P(abfd) \
((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0)
/* Nonzero if ABFD is using NewABI conventions. */
#define NEWABI_P(abfd) (ABI_N32_P (abfd) || ABI_64_P (abfd))
+/* Nonzero if ABFD has microMIPS code. */
+#define MICROMIPS_P(abfd) \
+ ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS) != 0)
+
+/* Nonzero if ABFD is MIPS R6. */
+#define MIPSR6_P(abfd) \
+ ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6 \
+ || (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R6)
+
/* The IRIX compatibility level we are striving for. */
#define IRIX_COMPAT(abfd) \
(get_elf_backend_data (abfd)->elf_backend_mips_irix_compat (abfd))
#define MIPS_ELF_OPTIONS_SECTION_NAME_P(NAME) \
(strcmp (NAME, ".MIPS.options") == 0 || strcmp (NAME, ".options") == 0)
+/* True if NAME is the recognized name of any SHT_MIPS_ABIFLAGS section. */
+#define MIPS_ELF_ABIFLAGS_SECTION_NAME_P(NAME) \
+ (strcmp (NAME, ".MIPS.abiflags") == 0)
+
/* Whether the section is readonly. */
#define MIPS_ELF_READONLY_SECTION(sec) \
((sec->flags & (SEC_ALLOC | SEC_LOAD | SEC_READONLY)) \
? (0x64180000 + (VAL)) /* daddiu t8,zero,VAL sign extended */ \
: (0x24180000 + (VAL)))) /* addiu t8,zero,VAL sign extended */
+/* Likewise for the microMIPS ASE. */
+#define STUB_LW_MICROMIPS(abfd) \
+ (ABI_64_P (abfd) \
+ ? 0xdf3c8010 /* ld t9,0x8010(gp) */ \
+ : 0xff3c8010) /* lw t9,0x8010(gp) */
+#define STUB_MOVE_MICROMIPS 0x0dff /* move t7,ra */
+#define STUB_MOVE32_MICROMIPS(abfd) \
+ (ABI_64_P (abfd) \
+ ? 0x581f7950 /* daddu t7,ra,zero */ \
+ : 0x001f7950) /* addu t7,ra,zero */
+#define STUB_LUI_MICROMIPS(VAL) \
+ (0x41b80000 + (VAL)) /* lui t8,VAL */
+#define STUB_JALR_MICROMIPS 0x45d9 /* jalr t9 */
+#define STUB_JALR32_MICROMIPS 0x03f90f3c /* jalr ra,t9 */
+#define STUB_ORI_MICROMIPS(VAL) \
+ (0x53180000 + (VAL)) /* ori t8,t8,VAL */
+#define STUB_LI16U_MICROMIPS(VAL) \
+ (0x53000000 + (VAL)) /* ori t8,zero,VAL unsigned */
+#define STUB_LI16S_MICROMIPS(abfd, VAL) \
+ (ABI_64_P (abfd) \
+ ? 0x5f000000 + (VAL) /* daddiu t8,zero,VAL sign extended */ \
+ : 0x33000000 + (VAL)) /* addiu t8,zero,VAL sign extended */
+
#define MIPS_FUNCTION_STUB_NORMAL_SIZE 16
#define MIPS_FUNCTION_STUB_BIG_SIZE 20
+#define MICROMIPS_FUNCTION_STUB_NORMAL_SIZE 12
+#define MICROMIPS_FUNCTION_STUB_BIG_SIZE 16
+#define MICROMIPS_INSN32_FUNCTION_STUB_NORMAL_SIZE 16
+#define MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE 20
/* The name of the dynamic interpreter. This is put in the .interp
section. */
0x2718fffe /* subu $24, $24, 2 */
};
-/* The format of subsequent PLT entries. */
+/* The format of the microMIPS first PLT entry in an O32 executable.
+ We rely on v0 ($2) rather than t8 ($24) to contain the address
+ of the GOTPLT entry handled, so this stub may only be used when
+ all the subsequent PLT entries are microMIPS code too.
+
+ The trailing NOP is for alignment and correct disassembly only. */
+static const bfd_vma micromips_o32_exec_plt0_entry[] =
+{
+ 0x7980, 0x0000, /* addiupc $3, (&GOTPLT[0]) - . */
+ 0xff23, 0x0000, /* lw $25, 0($3) */
+ 0x0535, /* subu $2, $2, $3 */
+ 0x2525, /* srl $2, $2, 2 */
+ 0x3302, 0xfffe, /* subu $24, $2, 2 */
+ 0x0dff, /* move $15, $31 */
+ 0x45f9, /* jalrs $25 */
+ 0x0f83, /* move $28, $3 */
+ 0x0c00 /* nop */
+};
+
+/* The format of the microMIPS first PLT entry in an O32 executable
+ in the insn32 mode. */
+static const bfd_vma micromips_insn32_o32_exec_plt0_entry[] =
+{
+ 0x41bc, 0x0000, /* lui $28, %hi(&GOTPLT[0]) */
+ 0xff3c, 0x0000, /* lw $25, %lo(&GOTPLT[0])($28) */
+ 0x339c, 0x0000, /* addiu $28, $28, %lo(&GOTPLT[0]) */
+ 0x0398, 0xc1d0, /* subu $24, $24, $28 */
+ 0x001f, 0x7950, /* move $15, $31 */
+ 0x0318, 0x1040, /* srl $24, $24, 2 */
+ 0x03f9, 0x0f3c, /* jalr $25 */
+ 0x3318, 0xfffe /* subu $24, $24, 2 */
+};
+
+/* The format of subsequent standard PLT entries. */
static const bfd_vma mips_exec_plt_entry[] =
{
0x3c0f0000, /* lui $15, %hi(.got.plt entry) */
0x03200008 /* jr $25 */
};
+/* In the following PLT entry the JR and ADDIU instructions will
+ be swapped in _bfd_mips_elf_finish_dynamic_symbol because
+ LOAD_INTERLOCKS_P will be true for MIPS R6. */
+static const bfd_vma mipsr6_exec_plt_entry[] =
+{
+ 0x3c0f0000, /* lui $15, %hi(.got.plt entry) */
+ 0x01f90000, /* l[wd] $25, %lo(.got.plt entry)($15) */
+ 0x25f80000, /* addiu $24, $15, %lo(.got.plt entry) */
+ 0x03200009 /* jr $25 */
+};
+
+/* The format of subsequent MIPS16 o32 PLT entries. We use v0 ($2)
+ and v1 ($3) as temporaries because t8 ($24) and t9 ($25) are not
+ directly addressable. */
+static const bfd_vma mips16_o32_exec_plt_entry[] =
+{
+ 0xb203, /* lw $2, 12($pc) */
+ 0x9a60, /* lw $3, 0($2) */
+ 0x651a, /* move $24, $2 */
+ 0xeb00, /* jr $3 */
+ 0x653b, /* move $25, $3 */
+ 0x6500, /* nop */
+ 0x0000, 0x0000 /* .word (.got.plt entry) */
+};
+
+/* The format of subsequent microMIPS o32 PLT entries. We use v0 ($2)
+ as a temporary because t8 ($24) is not addressable with ADDIUPC. */
+static const bfd_vma micromips_o32_exec_plt_entry[] =
+{
+ 0x7900, 0x0000, /* addiupc $2, (.got.plt entry) - . */
+ 0xff22, 0x0000, /* lw $25, 0($2) */
+ 0x4599, /* jr $25 */
+ 0x0f02 /* move $24, $2 */
+};
+
+/* The format of subsequent microMIPS o32 PLT entries in the insn32 mode. */
+static const bfd_vma micromips_insn32_o32_exec_plt_entry[] =
+{
+ 0x41af, 0x0000, /* lui $15, %hi(.got.plt entry) */
+ 0xff2f, 0x0000, /* lw $25, %lo(.got.plt entry)($15) */
+ 0x0019, 0x0f3c, /* jr $25 */
+ 0x330f, 0x0000 /* addiu $24, $15, %lo(.got.plt entry) */
+};
+
/* The format of the first PLT entry in a VxWorks executable. */
static const bfd_vma mips_vxworks_exec_plt0_entry[] =
{
ret->need_fn_stub = FALSE;
ret->has_nonpic_branches = FALSE;
ret->needs_lazy_stub = FALSE;
+ ret->use_plt_entry = FALSE;
}
return (struct bfd_hash_entry *) ret;
{
return (r_type == R_MIPS_HI16
|| r_type == R_MIPS16_HI16
- || r_type == R_MICROMIPS_HI16);
+ || r_type == R_MICROMIPS_HI16
+ || r_type == R_MIPS_PCHI16);
}
static inline bfd_boolean
{
return (r_type == R_MIPS_LO16
|| r_type == R_MIPS16_LO16
- || r_type == R_MICROMIPS_LO16);
+ || r_type == R_MICROMIPS_LO16
+ || r_type == R_MIPS_PCLO16);
}
static inline bfd_boolean
}
static inline bfd_boolean
+aligned_pcrel_reloc_p (int r_type)
+{
+ return (r_type == R_MIPS_PC18_S3
+ || r_type == R_MIPS_PC19_S2);
+}
+
+static inline bfd_boolean
micromips_branch_reloc_p (int r_type)
{
return (r_type == R_MICROMIPS_26_S1
H_PUT_16 (abfd, in->section, ex->section);
H_PUT_32 (abfd, in->info, ex->info);
}
+
+/* Swap in an abiflags structure. */
+
+void
+bfd_mips_elf_swap_abiflags_v0_in (bfd *abfd,
+ const Elf_External_ABIFlags_v0 *ex,
+ Elf_Internal_ABIFlags_v0 *in)
+{
+ in->version = H_GET_16 (abfd, ex->version);
+ in->isa_level = H_GET_8 (abfd, ex->isa_level);
+ in->isa_rev = H_GET_8 (abfd, ex->isa_rev);
+ in->gpr_size = H_GET_8 (abfd, ex->gpr_size);
+ in->cpr1_size = H_GET_8 (abfd, ex->cpr1_size);
+ in->cpr2_size = H_GET_8 (abfd, ex->cpr2_size);
+ in->fp_abi = H_GET_8 (abfd, ex->fp_abi);
+ in->isa_ext = H_GET_32 (abfd, ex->isa_ext);
+ in->ases = H_GET_32 (abfd, ex->ases);
+ in->flags1 = H_GET_32 (abfd, ex->flags1);
+ in->flags2 = H_GET_32 (abfd, ex->flags2);
+}
+
+/* Swap out an abiflags structure. */
+
+void
+bfd_mips_elf_swap_abiflags_v0_out (bfd *abfd,
+ const Elf_Internal_ABIFlags_v0 *in,
+ Elf_External_ABIFlags_v0 *ex)
+{
+ H_PUT_16 (abfd, in->version, ex->version);
+ H_PUT_8 (abfd, in->isa_level, ex->isa_level);
+ H_PUT_8 (abfd, in->isa_rev, ex->isa_rev);
+ H_PUT_8 (abfd, in->gpr_size, ex->gpr_size);
+ H_PUT_8 (abfd, in->cpr1_size, ex->cpr1_size);
+ H_PUT_8 (abfd, in->cpr2_size, ex->cpr2_size);
+ H_PUT_8 (abfd, in->fp_abi, ex->fp_abi);
+ H_PUT_32 (abfd, in->isa_ext, ex->isa_ext);
+ H_PUT_32 (abfd, in->ases, ex->ases);
+ H_PUT_32 (abfd, in->flags1, ex->flags1);
+ H_PUT_32 (abfd, in->flags2, ex->flags2);
+}
\f
/* This function is called via qsort() to sort the dynamic relocation
entries by increasing r_symndx value. */
if (hd->needs_lazy_stub)
{
+ BFD_ASSERT (hd->root.plt.plist != NULL);
+ BFD_ASSERT (hd->root.plt.plist->stub_offset != MINUS_ONE);
/* Set type and value for a symbol with a function stub. */
h->esym.asym.st = stProc;
sec = hd->root.root.u.def.section;
{
output_section = sec->output_section;
if (output_section != NULL)
- h->esym.asym.value = (hd->root.plt.offset
+ h->esym.asym.value = (hd->root.plt.plist->stub_offset
+ sec->output_offset
+ output_section->vma);
else
const struct mips_got_entry *entry = (struct mips_got_entry *)entry_;
return (entry->symndx
- + (((entry->tls_type & GOT_TLS_TYPE) == GOT_TLS_LDM) << 18)
- + ((entry->tls_type & GOT_TLS_TYPE) == GOT_TLS_LDM ? 0
+ + ((entry->tls_type == GOT_TLS_LDM) << 18)
+ + (entry->tls_type == GOT_TLS_LDM ? 0
: !entry->abfd ? mips_elf_hash_bfd_vma (entry->d.address)
: entry->symndx >= 0 ? (entry->abfd->id
+ mips_elf_hash_bfd_vma (entry->d.addend))
const struct mips_got_entry *e2 = (struct mips_got_entry *)entry2;
return (e1->symndx == e2->symndx
- && (e1->tls_type & GOT_TLS_TYPE) == (e2->tls_type & GOT_TLS_TYPE)
- && ((e1->tls_type & GOT_TLS_TYPE) == GOT_TLS_LDM ? TRUE
+ && e1->tls_type == e2->tls_type
+ && (e1->tls_type == GOT_TLS_LDM ? TRUE
: !e1->abfd ? !e2->abfd && e1->d.address == e2->d.address
: e1->symndx >= 0 ? (e1->abfd == e2->abfd
&& e1->d.addend == e2->d.addend)
}
static hashval_t
+mips_got_page_ref_hash (const void *ref_)
+{
+ const struct mips_got_page_ref *ref;
+
+ ref = (const struct mips_got_page_ref *) ref_;
+ return ((ref->symndx >= 0
+ ? (hashval_t) (ref->u.abfd->id + ref->symndx)
+ : ref->u.h->root.root.root.hash)
+ + mips_elf_hash_bfd_vma (ref->addend));
+}
+
+static int
+mips_got_page_ref_eq (const void *ref1_, const void *ref2_)
+{
+ const struct mips_got_page_ref *ref1, *ref2;
+
+ ref1 = (const struct mips_got_page_ref *) ref1_;
+ ref2 = (const struct mips_got_page_ref *) ref2_;
+ return (ref1->symndx == ref2->symndx
+ && (ref1->symndx < 0
+ ? ref1->u.h == ref2->u.h
+ : ref1->u.abfd == ref2->u.abfd)
+ && ref1->addend == ref2->addend);
+}
+
+static hashval_t
mips_got_page_entry_hash (const void *entry_)
{
const struct mips_got_page_entry *entry;
entry = (const struct mips_got_page_entry *) entry_;
- return entry->abfd->id + entry->symndx;
+ return entry->sec->id;
}
static int
entry1 = (const struct mips_got_page_entry *) entry1_;
entry2 = (const struct mips_got_page_entry *) entry2_;
- return entry1->abfd == entry2->abfd && entry1->symndx == entry2->symndx;
+ return entry1->sec == entry2->sec;
}
\f
/* Create and return a new mips_got_info structure. */
if (g->got_entries == NULL)
return NULL;
- g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash,
- mips_got_page_entry_eq, NULL);
- if (g->got_page_entries == NULL)
+ g->got_page_refs = htab_try_create (1, mips_got_page_ref_hash,
+ mips_got_page_ref_eq, NULL);
+ if (g->got_page_refs == NULL)
return NULL;
return g;
/* The GOT structure itself and the hash table entries are
allocated to a bfd, but the hash tables aren't. */
htab_delete (tdata->got->got_entries);
- htab_delete (tdata->got->got_page_entries);
+ htab_delete (tdata->got->got_page_refs);
+ if (tdata->got->got_page_entries)
+ htab_delete (tdata->got->got_page_entries);
}
tdata->got = g;
}
if (tls_gottprel_reloc_p (r_type))
return GOT_TLS_IE;
- return GOT_NORMAL;
+ return GOT_TLS_NONE;
}
/* Return the number of GOT slots needed for GOT TLS type TYPE. */
case GOT_TLS_IE:
return 1;
- case GOT_NORMAL:
+ case GOT_TLS_NONE:
return 0;
}
abort ();
if (!need_relocs)
return 0;
- switch (tls_type & GOT_TLS_TYPE)
+ switch (tls_type)
{
case GOT_TLS_GD:
return indx != 0 ? 2 : 1;
struct mips_got_info *g,
struct mips_got_entry *entry)
{
- unsigned char tls_type;
-
- tls_type = entry->tls_type & GOT_TLS_TYPE;
- if (tls_type)
+ if (entry->tls_type)
{
- g->tls_gotno += mips_tls_got_entries (tls_type);
- g->relocs += mips_tls_got_relocs (info, tls_type,
+ g->tls_gotno += mips_tls_got_entries (entry->tls_type);
+ g->relocs += mips_tls_got_relocs (info, entry->tls_type,
entry->symndx < 0
? &entry->d.h->root : NULL);
}
g->global_gotno += 1;
}
-/* A htab_traverse callback. Count the number of GOT entries and
- TLS relocations required for the GOT entry in *ENTRYP. DATA points
- to a mips_elf_traverse_got_arg structure. */
-
-static int
-mips_elf_count_got_entries (void **entryp, void *data)
-{
- struct mips_got_entry *entry;
- struct mips_elf_traverse_got_arg *arg;
-
- entry = (struct mips_got_entry *) *entryp;
- arg = (struct mips_elf_traverse_got_arg *) data;
- mips_elf_count_got_entry (arg->info, arg->g, entry);
-
- return 1;
-}
-
/* Output a simple dynamic relocation into SRELOC. */
static void
/* Initialize a set of TLS GOT entries for one symbol. */
static void
-mips_elf_initialize_tls_slots (bfd *abfd, bfd_vma got_offset,
- unsigned char *tls_type_p,
- struct bfd_link_info *info,
+mips_elf_initialize_tls_slots (bfd *abfd, struct bfd_link_info *info,
+ struct mips_got_entry *entry,
struct mips_elf_link_hash_entry *h,
bfd_vma value)
{
struct mips_elf_link_hash_table *htab;
int indx;
asection *sreloc, *sgot;
- bfd_vma got_offset2;
+ bfd_vma got_offset, got_offset2;
bfd_boolean need_relocs = FALSE;
htab = mips_elf_hash_table (info);
indx = h->root.dynindx;
}
- if (*tls_type_p & GOT_TLS_DONE)
+ if (entry->tls_initialized)
return;
if ((info->shared || indx != 0)
/* Emit necessary relocations. */
sreloc = mips_elf_rel_dyn_section (info, FALSE);
+ got_offset = entry->gotidx;
- switch (*tls_type_p & GOT_TLS_TYPE)
+ switch (entry->tls_type)
{
case GOT_TLS_GD:
/* General Dynamic. */
abort ();
}
- *tls_type_p |= GOT_TLS_DONE;
-}
-
-/* Return the GOT index to use for a relocation against H using the
- TLS model in *TLS_TYPE. The GOT entries for this symbol/model
- combination start at GOT_INDEX into ABFD's GOT. This function
- initializes the GOT entries and corresponding relocations. */
-
-static bfd_vma
-mips_tls_got_index (bfd *abfd, bfd_vma got_index, unsigned char *tls_type,
- struct bfd_link_info *info,
- struct mips_elf_link_hash_entry *h, bfd_vma symbol)
-{
- mips_elf_initialize_tls_slots (abfd, got_index, tls_type, info, h, symbol);
- return got_index;
+ entry->tls_initialized = TRUE;
}
/* Return the offset from _GLOBAL_OFFSET_TABLE_ of the .got.plt entry
mips_elf_gotplt_index (struct bfd_link_info *info,
struct elf_link_hash_entry *h)
{
- bfd_vma plt_index, got_address, got_value;
+ bfd_vma got_address, got_value;
struct mips_elf_link_hash_table *htab;
htab = mips_elf_hash_table (info);
BFD_ASSERT (htab != NULL);
- BFD_ASSERT (h->plt.offset != (bfd_vma) -1);
-
- /* This function only works for VxWorks, because a non-VxWorks .got.plt
- section starts with reserved entries. */
- BFD_ASSERT (htab->is_vxworks);
-
- /* Calculate the index of the symbol's PLT entry. */
- plt_index = (h->plt.offset - htab->plt_header_size) / htab->plt_entry_size;
+ BFD_ASSERT (h->plt.plist != NULL);
+ BFD_ASSERT (h->plt.plist->gotplt_index != MINUS_ONE);
/* Calculate the address of the associated .got.plt entry. */
got_address = (htab->sgotplt->output_section->vma
+ htab->sgotplt->output_offset
- + plt_index * 4);
+ + (h->plt.plist->gotplt_index
+ * MIPS_ELF_GOT_SIZE (info->output_bfd)));
/* Calculate the value of _GLOBAL_OFFSET_TABLE_. */
got_value = (htab->root.hgot->root.u.def.section->output_section->vma
return MINUS_ONE;
if (entry->tls_type)
- return mips_tls_got_index (abfd, entry->gotidx, &entry->tls_type,
- info, h, value);
- else
- return entry->gotidx;
+ mips_elf_initialize_tls_slots (abfd, info, entry, h, value);
+ return entry->gotidx;
}
/* Return the GOT index of global symbol H in the primary GOT. */
+ h->root.u.def.section->output_offset
+ h->root.u.def.section->output_section->vma);
- return mips_tls_got_index (obfd, gotidx, &entry->tls_type,
- info, lookup.d.h, value);
+ mips_elf_initialize_tls_slots (obfd, info, entry, lookup.d.h, value);
}
return gotidx;
}
if (entry)
return entry;
- if (g->assigned_gotno >= g->local_gotno)
+ if (g->assigned_low_gotno > g->assigned_high_gotno)
{
/* We didn't allocate enough space in the GOT. */
(*_bfd_error_handler)
if (!entry)
return NULL;
- lookup.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_gotno++;
+ if (got16_reloc_p (r_type)
+ || call16_reloc_p (r_type)
+ || got_page_reloc_p (r_type)
+ || got_disp_reloc_p (r_type))
+ lookup.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_low_gotno++;
+ else
+ lookup.gotidx = MIPS_ELF_GOT_SIZE (abfd) * g->assigned_high_gotno--;
+
*entry = lookup;
*loc = entry;
if (!entry)
return FALSE;
+ lookup->tls_initialized = FALSE;
lookup->gotidx = -1;
*entry = *lookup;
*loc = entry;
}
tls_type = mips_elf_reloc_tls_type (r_type);
- if (tls_type == GOT_NORMAL && hmips->global_got_area > GGA_NORMAL)
+ if (tls_type == GOT_TLS_NONE && hmips->global_got_area > GGA_NORMAL)
hmips->global_got_area = GGA_NORMAL;
entry.abfd = abfd;
return mips_elf_record_got_entry (info, abfd, &entry);
}
-/* Return the maximum number of GOT page entries required for RANGE. */
-
-static bfd_vma
-mips_elf_pages_for_range (const struct mips_got_page_range *range)
-{
- return (range->max_addend - range->min_addend + 0x1ffff) >> 16;
-}
-
-/* Record that ABFD has a page relocation against symbol SYMNDX and
- that ADDEND is the addend for that relocation.
-
- This function creates an upper bound on the number of GOT slots
- required; no attempt is made to combine references to non-overridable
- global symbols across multiple input files. */
+/* Record that ABFD has a page relocation against SYMNDX + ADDEND.
+ H is the symbol's hash table entry, or null if SYMNDX is local
+ to ABFD. */
static bfd_boolean
-mips_elf_record_got_page_entry (struct bfd_link_info *info, bfd *abfd,
- long symndx, bfd_signed_vma addend)
+mips_elf_record_got_page_ref (struct bfd_link_info *info, bfd *abfd,
+ long symndx, struct elf_link_hash_entry *h,
+ bfd_signed_vma addend)
{
struct mips_elf_link_hash_table *htab;
struct mips_got_info *g1, *g2;
- struct mips_got_page_entry lookup, *entry;
- struct mips_got_page_range **range_ptr, *range;
- bfd_vma old_pages, new_pages;
+ struct mips_got_page_ref lookup, *entry;
void **loc, **bfd_loc;
htab = mips_elf_hash_table (info);
g1 = htab->got_info;
BFD_ASSERT (g1 != NULL);
- /* Find the mips_got_page_entry hash table entry for this symbol. */
- lookup.abfd = abfd;
- lookup.symndx = symndx;
- loc = htab_find_slot (g1->got_page_entries, &lookup, INSERT);
+ if (h)
+ {
+ lookup.symndx = -1;
+ lookup.u.h = (struct mips_elf_link_hash_entry *) h;
+ }
+ else
+ {
+ lookup.symndx = symndx;
+ lookup.u.abfd = abfd;
+ }
+ lookup.addend = addend;
+ loc = htab_find_slot (g1->got_page_refs, &lookup, INSERT);
if (loc == NULL)
return FALSE;
- /* Create a mips_got_page_entry if this is the first time we've
- seen the symbol. */
- entry = (struct mips_got_page_entry *) *loc;
+ entry = (struct mips_got_page_ref *) *loc;
if (!entry)
{
entry = bfd_alloc (abfd, sizeof (*entry));
if (!entry)
return FALSE;
- entry->abfd = abfd;
- entry->symndx = symndx;
- entry->ranges = NULL;
- entry->num_pages = 0;
+ *entry = lookup;
*loc = entry;
}
if (!g2)
return FALSE;
- bfd_loc = htab_find_slot (g2->got_page_entries, &lookup, INSERT);
+ bfd_loc = htab_find_slot (g2->got_page_refs, &lookup, INSERT);
if (!bfd_loc)
return FALSE;
if (!*bfd_loc)
*bfd_loc = entry;
- /* Skip over ranges whose maximum extent cannot share a page entry
- with ADDEND. */
- range_ptr = &entry->ranges;
- while (*range_ptr && addend > (*range_ptr)->max_addend + 0xffff)
- range_ptr = &(*range_ptr)->next;
-
- /* If we scanned to the end of the list, or found a range whose
- minimum extent cannot share a page entry with ADDEND, create
- a new singleton range. */
- range = *range_ptr;
- if (!range || addend < range->min_addend - 0xffff)
- {
- range = bfd_alloc (abfd, sizeof (*range));
- if (!range)
- return FALSE;
-
- range->next = *range_ptr;
- range->min_addend = addend;
- range->max_addend = addend;
-
- *range_ptr = range;
- entry->num_pages++;
- g1->page_gotno++;
- g2->page_gotno++;
- return TRUE;
- }
-
- /* Remember how many pages the old range contributed. */
- old_pages = mips_elf_pages_for_range (range);
-
- /* Update the ranges. */
- if (addend < range->min_addend)
- range->min_addend = addend;
- else if (addend > range->max_addend)
- {
- if (range->next && addend >= range->next->min_addend - 0xffff)
- {
- old_pages += mips_elf_pages_for_range (range->next);
- range->max_addend = range->next->max_addend;
- range->next = range->next->next;
- }
- else
- range->max_addend = addend;
- }
-
- /* Record any change in the total estimate. */
- new_pages = mips_elf_pages_for_range (range);
- if (old_pages != new_pages)
- {
- entry->num_pages += new_pages - old_pages;
- g1->page_gotno += new_pages - old_pages;
- g2->page_gotno += new_pages - old_pages;
- }
-
return TRUE;
}
}
}
\f
-/* A htab_traverse callback for GOT entries. Set boolean *DATA to true
- if the GOT entry is for an indirect or warning symbol. */
+/* A htab_traverse callback for GOT entries, with DATA pointing to a
+ mips_elf_traverse_got_arg structure. Count the number of GOT
+ entries and TLS relocs. Set DATA->value to true if we need
+ to resolve indirect or warning symbols and then recreate the GOT. */
static int
mips_elf_check_recreate_got (void **entryp, void *data)
{
struct mips_got_entry *entry;
- bfd_boolean *must_recreate;
+ struct mips_elf_traverse_got_arg *arg;
entry = (struct mips_got_entry *) *entryp;
- must_recreate = (bfd_boolean *) data;
+ arg = (struct mips_elf_traverse_got_arg *) data;
if (entry->abfd != NULL && entry->symndx == -1)
{
struct mips_elf_link_hash_entry *h;
if (h->root.root.type == bfd_link_hash_indirect
|| h->root.root.type == bfd_link_hash_warning)
{
- *must_recreate = TRUE;
+ arg->value = TRUE;
return 0;
}
}
+ mips_elf_count_got_entry (arg->info, arg->g, entry);
return 1;
}
-/* A htab_traverse callback for GOT entries. Add all entries to
- hash table *DATA, converting entries for indirect and warning
- symbols into entries for the target symbol. Set *DATA to null
- on error. */
+/* A htab_traverse callback for GOT entries, with DATA pointing to a
+ mips_elf_traverse_got_arg structure. Add all entries to DATA->g,
+ converting entries for indirect and warning symbols into entries
+ for the target symbol. Set DATA->g to null on error. */
static int
mips_elf_recreate_got (void **entryp, void *data)
{
- htab_t *new_got;
struct mips_got_entry new_entry, *entry;
+ struct mips_elf_traverse_got_arg *arg;
void **slot;
- new_got = (htab_t *) data;
entry = (struct mips_got_entry *) *entryp;
+ arg = (struct mips_elf_traverse_got_arg *) data;
if (entry->abfd != NULL
&& entry->symndx == -1
&& (entry->d.h->root.root.type == bfd_link_hash_indirect
|| h->root.root.type == bfd_link_hash_warning);
entry->d.h = h;
}
- slot = htab_find_slot (*new_got, entry, INSERT);
+ slot = htab_find_slot (arg->g->got_entries, entry, INSERT);
if (slot == NULL)
{
- *new_got = NULL;
+ arg->g = NULL;
return 0;
}
if (*slot == NULL)
entry = bfd_alloc (entry->abfd, sizeof (*entry));
if (!entry)
{
- *new_got = NULL;
+ arg->g = NULL;
return 0;
}
*entry = new_entry;
}
*slot = entry;
+ mips_elf_count_got_entry (arg->info, arg->g, entry);
}
return 1;
}
-/* If any entries in G->got_entries are for indirect or warning symbols,
- replace them with entries for the target symbol. */
+/* Return the maximum number of GOT page entries required for RANGE. */
+
+static bfd_vma
+mips_elf_pages_for_range (const struct mips_got_page_range *range)
+{
+ return (range->max_addend - range->min_addend + 0x1ffff) >> 16;
+}
+
+/* Record that G requires a page entry that can reach SEC + ADDEND. */
static bfd_boolean
-mips_elf_resolve_final_got_entries (struct mips_got_info *g)
+mips_elf_record_got_page_entry (struct mips_elf_traverse_got_arg *arg,
+ asection *sec, bfd_signed_vma addend)
{
- bfd_boolean must_recreate;
- htab_t new_got;
+ struct mips_got_info *g = arg->g;
+ struct mips_got_page_entry lookup, *entry;
+ struct mips_got_page_range **range_ptr, *range;
+ bfd_vma old_pages, new_pages;
+ void **loc;
- must_recreate = FALSE;
- htab_traverse (g->got_entries, mips_elf_check_recreate_got, &must_recreate);
- if (must_recreate)
+ /* Find the mips_got_page_entry hash table entry for this section. */
+ lookup.sec = sec;
+ loc = htab_find_slot (g->got_page_entries, &lookup, INSERT);
+ if (loc == NULL)
+ return FALSE;
+
+ /* Create a mips_got_page_entry if this is the first time we've
+ seen the section. */
+ entry = (struct mips_got_page_entry *) *loc;
+ if (!entry)
{
- new_got = htab_create (htab_size (g->got_entries),
- mips_elf_got_entry_hash,
- mips_elf_got_entry_eq, NULL);
- htab_traverse (g->got_entries, mips_elf_recreate_got, &new_got);
- if (new_got == NULL)
+ entry = bfd_zalloc (arg->info->output_bfd, sizeof (*entry));
+ if (!entry)
return FALSE;
- htab_delete (g->got_entries);
- g->got_entries = new_got;
+ entry->sec = sec;
+ *loc = entry;
}
- return TRUE;
-}
-
-/* A mips_elf_link_hash_traverse callback for which DATA points to the
- link_info structure. Decide whether the hash entry needs an entry in
- the global part of the primary GOT, setting global_got_area accordingly.
- Count the number of global symbols that are in the primary GOT only
- because they have relocations against them (reloc_only_gotno). */
-static int
-mips_elf_count_got_symbols (struct mips_elf_link_hash_entry *h, void *data)
-{
- struct bfd_link_info *info;
- struct mips_elf_link_hash_table *htab;
- struct mips_got_info *g;
+ /* Skip over ranges whose maximum extent cannot share a page entry
+ with ADDEND. */
+ range_ptr = &entry->ranges;
+ while (*range_ptr && addend > (*range_ptr)->max_addend + 0xffff)
+ range_ptr = &(*range_ptr)->next;
- info = (struct bfd_link_info *) data;
- htab = mips_elf_hash_table (info);
- g = htab->got_info;
- if (h->global_got_area != GGA_NONE)
+ /* If we scanned to the end of the list, or found a range whose
+ minimum extent cannot share a page entry with ADDEND, create
+ a new singleton range. */
+ range = *range_ptr;
+ if (!range || addend < range->min_addend - 0xffff)
{
- /* Make a final decision about whether the symbol belongs in the
- local or global GOT. Symbols that bind locally can (and in the
- case of forced-local symbols, must) live in the local GOT.
- Those that are aren't in the dynamic symbol table must also
- live in the local GOT.
-
- Note that the former condition does not always imply the
- latter: symbols do not bind locally if they are completely
- undefined. We'll report undefined symbols later if appropriate. */
- if (h->root.dynindx == -1
- || (h->got_only_for_calls
- ? SYMBOL_CALLS_LOCAL (info, &h->root)
- : SYMBOL_REFERENCES_LOCAL (info, &h->root)))
- /* The symbol belongs in the local GOT. We no longer need this
- entry if it was only used for relocations; those relocations
- will be against the null or section symbol instead of H. */
- h->global_got_area = GGA_NONE;
- else if (htab->is_vxworks
- && h->got_only_for_calls
- && h->root.plt.offset != MINUS_ONE)
- /* On VxWorks, calls can refer directly to the .got.plt entry;
- they don't need entries in the regular GOT. .got.plt entries
- will be allocated by _bfd_mips_elf_adjust_dynamic_symbol. */
- h->global_got_area = GGA_NONE;
- else if (h->global_got_area == GGA_RELOC_ONLY)
- {
- g->reloc_only_gotno++;
- g->global_gotno++;
- }
+ range = bfd_zalloc (arg->info->output_bfd, sizeof (*range));
+ if (!range)
+ return FALSE;
+
+ range->next = *range_ptr;
+ range->min_addend = addend;
+ range->max_addend = addend;
+
+ *range_ptr = range;
+ entry->num_pages++;
+ g->page_gotno++;
+ return TRUE;
+ }
+
+ /* Remember how many pages the old range contributed. */
+ old_pages = mips_elf_pages_for_range (range);
+
+ /* Update the ranges. */
+ if (addend < range->min_addend)
+ range->min_addend = addend;
+ else if (addend > range->max_addend)
+ {
+ if (range->next && addend >= range->next->min_addend - 0xffff)
+ {
+ old_pages += mips_elf_pages_for_range (range->next);
+ range->max_addend = range->next->max_addend;
+ range->next = range->next->next;
+ }
+ else
+ range->max_addend = addend;
+ }
+
+ /* Record any change in the total estimate. */
+ new_pages = mips_elf_pages_for_range (range);
+ if (old_pages != new_pages)
+ {
+ entry->num_pages += new_pages - old_pages;
+ g->page_gotno += new_pages - old_pages;
+ }
+
+ return TRUE;
+}
+
+/* A htab_traverse callback for which *REFP points to a mips_got_page_ref
+ and for which DATA points to a mips_elf_traverse_got_arg. Work out
+ whether the page reference described by *REFP needs a GOT page entry,
+ and record that entry in DATA->g if so. Set DATA->g to null on failure. */
+
+static bfd_boolean
+mips_elf_resolve_got_page_ref (void **refp, void *data)
+{
+ struct mips_got_page_ref *ref;
+ struct mips_elf_traverse_got_arg *arg;
+ struct mips_elf_link_hash_table *htab;
+ asection *sec;
+ bfd_vma addend;
+
+ ref = (struct mips_got_page_ref *) *refp;
+ arg = (struct mips_elf_traverse_got_arg *) data;
+ htab = mips_elf_hash_table (arg->info);
+
+ if (ref->symndx < 0)
+ {
+ struct mips_elf_link_hash_entry *h;
+
+ /* Global GOT_PAGEs decay to GOT_DISP and so don't need page entries. */
+ h = ref->u.h;
+ if (!SYMBOL_REFERENCES_LOCAL (arg->info, &h->root))
+ return 1;
+
+ /* Ignore undefined symbols; we'll issue an error later if
+ appropriate. */
+ if (!((h->root.root.type == bfd_link_hash_defined
+ || h->root.root.type == bfd_link_hash_defweak)
+ && h->root.root.u.def.section))
+ return 1;
+
+ sec = h->root.root.u.def.section;
+ addend = h->root.root.u.def.value + ref->addend;
+ }
+ else
+ {
+ Elf_Internal_Sym *isym;
+
+ /* Read in the symbol. */
+ isym = bfd_sym_from_r_symndx (&htab->sym_cache, ref->u.abfd,
+ ref->symndx);
+ if (isym == NULL)
+ {
+ arg->g = NULL;
+ return 0;
+ }
+
+ /* Get the associated input section. */
+ sec = bfd_section_from_elf_index (ref->u.abfd, isym->st_shndx);
+ if (sec == NULL)
+ {
+ arg->g = NULL;
+ return 0;
+ }
+
+ /* If this is a mergable section, work out the section and offset
+ of the merged data. For section symbols, the addend specifies
+ of the offset _of_ the first byte in the data, otherwise it
+ specifies the offset _from_ the first byte. */
+ if (sec->flags & SEC_MERGE)
+ {
+ void *secinfo;
+
+ secinfo = elf_section_data (sec)->sec_info;
+ if (ELF_ST_TYPE (isym->st_info) == STT_SECTION)
+ addend = _bfd_merged_section_offset (ref->u.abfd, &sec, secinfo,
+ isym->st_value + ref->addend);
+ else
+ addend = _bfd_merged_section_offset (ref->u.abfd, &sec, secinfo,
+ isym->st_value) + ref->addend;
+ }
+ else
+ addend = isym->st_value + ref->addend;
+ }
+ if (!mips_elf_record_got_page_entry (arg, sec, addend))
+ {
+ arg->g = NULL;
+ return 0;
+ }
+ return 1;
+}
+
+/* If any entries in G->got_entries are for indirect or warning symbols,
+ replace them with entries for the target symbol. Convert g->got_page_refs
+ into got_page_entry structures and estimate the number of page entries
+ that they require. */
+
+static bfd_boolean
+mips_elf_resolve_final_got_entries (struct bfd_link_info *info,
+ struct mips_got_info *g)
+{
+ struct mips_elf_traverse_got_arg tga;
+ struct mips_got_info oldg;
+
+ oldg = *g;
+
+ tga.info = info;
+ tga.g = g;
+ tga.value = FALSE;
+ htab_traverse (g->got_entries, mips_elf_check_recreate_got, &tga);
+ if (tga.value)
+ {
+ *g = oldg;
+ g->got_entries = htab_create (htab_size (oldg.got_entries),
+ mips_elf_got_entry_hash,
+ mips_elf_got_entry_eq, NULL);
+ if (!g->got_entries)
+ return FALSE;
+
+ htab_traverse (oldg.got_entries, mips_elf_recreate_got, &tga);
+ if (!tga.g)
+ return FALSE;
+
+ htab_delete (oldg.got_entries);
+ }
+
+ g->got_page_entries = htab_try_create (1, mips_got_page_entry_hash,
+ mips_got_page_entry_eq, NULL);
+ if (g->got_page_entries == NULL)
+ return FALSE;
+
+ tga.info = info;
+ tga.g = g;
+ htab_traverse (g->got_page_refs, mips_elf_resolve_got_page_ref, &tga);
+
+ return TRUE;
+}
+
+/* Return true if a GOT entry for H should live in the local rather than
+ global GOT area. */
+
+static bfd_boolean
+mips_use_local_got_p (struct bfd_link_info *info,
+ struct mips_elf_link_hash_entry *h)
+{
+ /* Symbols that aren't in the dynamic symbol table must live in the
+ local GOT. This includes symbols that are completely undefined
+ and which therefore don't bind locally. We'll report undefined
+ symbols later if appropriate. */
+ if (h->root.dynindx == -1)
+ return TRUE;
+
+ /* Symbols that bind locally can (and in the case of forced-local
+ symbols, must) live in the local GOT. */
+ if (h->got_only_for_calls
+ ? SYMBOL_CALLS_LOCAL (info, &h->root)
+ : SYMBOL_REFERENCES_LOCAL (info, &h->root))
+ return TRUE;
+
+ /* If this is an executable that must provide a definition of the symbol,
+ either though PLTs or copy relocations, then that address should go in
+ the local rather than global GOT. */
+ if (info->executable && h->has_static_relocs)
+ return TRUE;
+
+ return FALSE;
+}
+
+/* A mips_elf_link_hash_traverse callback for which DATA points to the
+ link_info structure. Decide whether the hash entry needs an entry in
+ the global part of the primary GOT, setting global_got_area accordingly.
+ Count the number of global symbols that are in the primary GOT only
+ because they have relocations against them (reloc_only_gotno). */
+
+static int
+mips_elf_count_got_symbols (struct mips_elf_link_hash_entry *h, void *data)
+{
+ struct bfd_link_info *info;
+ struct mips_elf_link_hash_table *htab;
+ struct mips_got_info *g;
+
+ info = (struct bfd_link_info *) data;
+ htab = mips_elf_hash_table (info);
+ g = htab->got_info;
+ if (h->global_got_area != GGA_NONE)
+ {
+ /* Make a final decision about whether the symbol belongs in the
+ local or global GOT. */
+ if (mips_use_local_got_p (info, h))
+ /* The symbol belongs in the local GOT. We no longer need this
+ entry if it was only used for relocations; those relocations
+ will be against the null or section symbol instead of H. */
+ h->global_got_area = GGA_NONE;
+ else if (htab->is_vxworks
+ && h->got_only_for_calls
+ && h->root.plt.plist->mips_offset != MINUS_ONE)
+ /* On VxWorks, calls can refer directly to the .got.plt entry;
+ they don't need entries in the regular GOT. .got.plt entries
+ will be allocated by _bfd_mips_elf_adjust_dynamic_symbol. */
+ h->global_got_area = GGA_NONE;
+ else if (h->global_got_area == GGA_RELOC_ONLY)
+ {
+ g->reloc_only_gotno++;
+ g->global_gotno++;
+ }
}
return 1;
}
mips_elf_merge_got (bfd *abfd, struct mips_got_info *g,
struct mips_elf_got_per_bfd_arg *arg)
{
- struct mips_elf_traverse_got_arg tga;
unsigned int estimate;
int result;
- if (!mips_elf_resolve_final_got_entries (g))
+ if (!mips_elf_resolve_final_got_entries (arg->info, g))
return FALSE;
- tga.info = arg->info;
- tga.g = g;
- htab_traverse (g->got_entries, mips_elf_count_got_entries, &tga);
-
/* Work out the number of page, local and TLS entries. */
estimate = arg->max_pages;
if (estimate > g->page_gotno)
{
struct mips_got_entry *entry;
struct mips_elf_traverse_got_arg *arg;
- unsigned char tls_type;
/* We're only interested in TLS symbols. */
entry = (struct mips_got_entry *) *entryp;
- tls_type = (entry->tls_type & GOT_TLS_TYPE);
- if (tls_type == 0)
+ if (entry->tls_type == GOT_TLS_NONE)
return 1;
arg = (struct mips_elf_traverse_got_arg *) data;
}
/* Account for the entries we've just allocated. */
- arg->g->tls_assigned_gotno += mips_tls_got_entries (tls_type);
+ arg->g->tls_assigned_gotno += mips_tls_got_entries (entry->tls_type);
return 1;
}
&& entry->symndx == -1
&& entry->d.h->global_got_area != GGA_NONE)
{
- if (!mips_elf_set_gotidx (entryp, arg->value * arg->g->assigned_gotno))
+ if (!mips_elf_set_gotidx (entryp, arg->value * arg->g->assigned_low_gotno))
{
arg->g = NULL;
return 0;
}
- arg->g->assigned_gotno += 1;
+ arg->g->assigned_low_gotno += 1;
if (arg->info->shared
|| (elf_hash_table (arg->info)->dynamic_sections_created
/* Try to merge the GOTs of input bfds together, as long as they
don't seem to exceed the maximum GOT size, choosing one of them
to be the primary GOT. */
- for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
{
gg = mips_elf_bfd_got (ibfd, FALSE);
if (gg && !mips_elf_merge_got (ibfd, gg, &got_per_bfd_arg))
htab_traverse (g->got_entries, mips_elf_set_global_got_area, &tga);
/* Now go through the GOTs assigning them offset ranges.
- [assigned_gotno, local_gotno[ will be set to the range of local
+ [assigned_low_gotno, local_gotno[ will be set to the range of local
entries in each GOT. We can then compute the end of a GOT by
adding local_gotno to global_gotno. We reverse the list and make
it circular since then we'll be able to quickly compute the
struct mips_got_info *gn;
assign += htab->reserved_gotno;
- g->assigned_gotno = assign;
+ g->assigned_low_gotno = assign;
g->local_gotno += assign;
g->local_gotno += (pages < g->page_gotno ? pages : g->page_gotno);
+ g->assigned_high_gotno = g->local_gotno - 1;
assign = g->local_gotno + g->global_gotno + g->tls_gotno;
/* Take g out of the direct list, and push it onto the reversed
/* Assign offsets to global GOT entries and count how many
relocations they need. */
- save_assign = g->assigned_gotno;
- g->assigned_gotno = g->local_gotno;
+ save_assign = g->assigned_low_gotno;
+ g->assigned_low_gotno = g->local_gotno;
tga.info = info;
tga.value = MIPS_ELF_GOT_SIZE (abfd);
tga.g = g;
htab_traverse (g->got_entries, mips_elf_set_global_gotidx, &tga);
if (!tga.g)
return FALSE;
- BFD_ASSERT (g->assigned_gotno == g->local_gotno + g->global_gotno);
- g->assigned_gotno = save_assign;
+ BFD_ASSERT (g->assigned_low_gotno == g->local_gotno + g->global_gotno);
+ g->assigned_low_gotno = save_assign;
if (info->shared)
{
- g->relocs += g->local_gotno - g->assigned_gotno;
- BFD_ASSERT (g->assigned_gotno == g->next->local_gotno
+ g->relocs += g->local_gotno - g->assigned_low_gotno;
+ BFD_ASSERT (g->assigned_low_gotno == g->next->local_gotno
+ g->next->global_gotno
+ g->next->tls_gotno
+ htab->reserved_gotno);
h->non_elf = 0;
h->def_regular = 1;
h->type = STT_OBJECT;
+ h->other = (h->other & ~ELF_ST_VISIBILITY (-1)) | STV_HIDDEN;
elf_hash_table (info)->hgot = h;
if (info->shared
{
case R_MIPS_26:
case R_MIPS_PC16:
+ case R_MIPS_PC21_S2:
+ case R_MIPS_PC26_S2:
case R_MICROMIPS_26_S1:
case R_MICROMIPS_PC7_S1:
case R_MICROMIPS_PC10_S1:
}
target_is_16_bit_code_p = ELF_ST_IS_MIPS16 (h->root.other);
- /* If the output section is the PLT section,
- then the target is not microMIPS. */
- target_is_micromips_code_p = (htab->splt != sec
- && ELF_ST_IS_MICROMIPS (h->root.other));
+ target_is_micromips_code_p = ELF_ST_IS_MICROMIPS (h->root.other);
}
/* If this is a reference to a 16-bit function with a stub, we need
&& h->fn_stub != NULL
&& (r_type != R_MIPS16_CALL16 || h->need_fn_stub))
|| (local_p
- && elf_tdata (input_bfd)->local_stubs != NULL
- && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
+ && mips_elf_tdata (input_bfd)->local_stubs != NULL
+ && mips_elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL))
&& !section_allows_mips16_refs_p (input_section))
{
/* This is a 32- or 64-bit call to a 16-bit function. We should
stub. */
if (local_p)
{
- sec = elf_tdata (input_bfd)->local_stubs[r_symndx];
+ sec = mips_elf_tdata (input_bfd)->local_stubs[r_symndx];
value = 0;
}
else
/* The target is 16-bit, but the stub isn't. */
target_is_16_bit_code_p = FALSE;
}
- /* If this is a 16-bit call to a 32- or 64-bit function with a stub, we
- need to redirect the call to the stub. Note that we specifically
- exclude R_MIPS16_CALL16 from this behavior; indirect calls should
- use an indirect stub instead. */
+ /* If this is a MIPS16 call with a stub, that is made through the PLT or
+ to a standard MIPS function, we need to redirect the call to the stub.
+ Note that we specifically exclude R_MIPS16_CALL16 from this behavior;
+ indirect calls should use an indirect stub instead. */
else if (r_type == R_MIPS16_26 && !info->relocatable
&& ((h != NULL && (h->call_stub != NULL || h->call_fp_stub != NULL))
|| (local_p
- && elf_tdata (input_bfd)->local_call_stubs != NULL
- && elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL))
- && !target_is_16_bit_code_p)
+ && mips_elf_tdata (input_bfd)->local_call_stubs != NULL
+ && mips_elf_tdata (input_bfd)->local_call_stubs[r_symndx] != NULL))
+ && ((h != NULL && h->use_plt_entry) || !target_is_16_bit_code_p))
{
if (local_p)
- sec = elf_tdata (input_bfd)->local_call_stubs[r_symndx];
+ sec = mips_elf_tdata (input_bfd)->local_call_stubs[r_symndx];
else
{
/* If both call_stub and call_fp_stub are defined, we can figure
symbol = (h->la25_stub->stub_section->output_section->vma
+ h->la25_stub->stub_section->output_offset
+ h->la25_stub->offset);
+ /* For direct MIPS16 and microMIPS calls make sure the compressed PLT
+ entry is used if a standard PLT entry has also been made. In this
+ case the symbol will have been set by mips_elf_set_plt_sym_value
+ to point to the standard PLT entry, so redirect to the compressed
+ one. */
+ else if ((r_type == R_MIPS16_26 || r_type == R_MICROMIPS_26_S1)
+ && !info->relocatable
+ && h != NULL
+ && h->use_plt_entry
+ && h->root.plt.plist->comp_offset != MINUS_ONE
+ && h->root.plt.plist->mips_offset != MINUS_ONE)
+ {
+ bfd_boolean micromips_p = MICROMIPS_P (abfd);
+
+ sec = htab->splt;
+ symbol = (sec->output_section->vma
+ + sec->output_offset
+ + htab->plt_header_size
+ + htab->plt_mips_offset
+ + h->root.plt.plist->comp_offset
+ + 1);
+
+ target_is_16_bit_code_p = !micromips_p;
+ target_is_micromips_code_p = micromips_p;
+ }
/* Make sure MIPS16 and microMIPS are not used together. */
if ((r_type == R_MIPS16_26 && target_is_micromips_code_p)
&& (target_is_16_bit_code_p
|| target_is_micromips_code_p))));
- local_p = (h == NULL
- || (h->got_only_for_calls
- ? SYMBOL_CALLS_LOCAL (info, &h->root)
- : SYMBOL_REFERENCES_LOCAL (info, &h->root)));
+ local_p = (h == NULL || mips_use_local_got_p (info, h));
gp0 = _bfd_get_gp_value (input_bfd);
gp = _bfd_get_gp_value (abfd);
return bfd_reloc_continue;
case R_MIPS_16:
- value = symbol + _bfd_mips_elf_sign_extend (addend, 16);
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 16);
+ value = symbol + addend;
overflowed_p = mips_elf_overflow_p (value, 16);
break;
if (was_local_p)
value = addend | ((p + 4) & (0xfc000000 << shift));
- else
+ else if (howto->partial_inplace)
value = _bfd_mips_elf_sign_extend (addend, 26 + shift);
+ else
+ value = addend;
value = (value + symbol) >> shift;
if (!was_local_p && h->root.root.type != bfd_link_hash_undefweak)
overflowed_p = (value >> 26) != ((p + 4) >> (26 + shift));
to them before. */
if (was_local_p)
value += gp0;
- overflowed_p = mips_elf_overflow_p (value, 16);
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 16);
break;
case R_MIPS16_GOT16:
case R_MIPS_PC16:
case R_MIPS_GNU_REL16_S2:
- value = symbol + _bfd_mips_elf_sign_extend (addend, 18) - p;
- overflowed_p = mips_elf_overflow_p (value, 18);
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 18);
+
+ if ((symbol + addend) & 3)
+ return bfd_reloc_outofrange;
+
+ value = symbol + addend - p;
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 18);
+ value >>= howto->rightshift;
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_PC21_S2:
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 23);
+
+ if ((symbol + addend) & 3)
+ return bfd_reloc_outofrange;
+
+ value = symbol + addend - p;
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 23);
+ value >>= howto->rightshift;
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_PC26_S2:
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 28);
+
+ if ((symbol + addend) & 3)
+ return bfd_reloc_outofrange;
+
+ value = symbol + addend - p;
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 28);
+ value >>= howto->rightshift;
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_PC18_S3:
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 21);
+
+ if ((symbol + addend) & 7)
+ return bfd_reloc_outofrange;
+
+ value = symbol + addend - ((p | 7) ^ 7);
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 21);
+ value >>= howto->rightshift;
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_PC19_S2:
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 21);
+
+ if ((symbol + addend) & 3)
+ return bfd_reloc_outofrange;
+
+ value = symbol + addend - p;
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 21);
value >>= howto->rightshift;
value &= howto->dst_mask;
break;
+ case R_MIPS_PCHI16:
+ value = mips_elf_high (symbol + addend - p);
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 16);
+ value &= howto->dst_mask;
+ break;
+
+ case R_MIPS_PCLO16:
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 16);
+ value = symbol + addend - p;
+ value &= howto->dst_mask;
+ break;
+
case R_MICROMIPS_PC7_S1:
- value = symbol + _bfd_mips_elf_sign_extend (addend, 8) - p;
- overflowed_p = mips_elf_overflow_p (value, 8);
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 8);
+ value = symbol + addend - p;
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 8);
value >>= howto->rightshift;
value &= howto->dst_mask;
break;
case R_MICROMIPS_PC10_S1:
- value = symbol + _bfd_mips_elf_sign_extend (addend, 11) - p;
- overflowed_p = mips_elf_overflow_p (value, 11);
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 11);
+ value = symbol + addend - p;
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 11);
value >>= howto->rightshift;
value &= howto->dst_mask;
break;
case R_MICROMIPS_PC16_S1:
- value = symbol + _bfd_mips_elf_sign_extend (addend, 17) - p;
- overflowed_p = mips_elf_overflow_p (value, 17);
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 17);
+ value = symbol + addend - p;
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 17);
value >>= howto->rightshift;
value &= howto->dst_mask;
break;
case R_MICROMIPS_PC23_S2:
- value = symbol + _bfd_mips_elf_sign_extend (addend, 25) - ((p | 3) ^ 3);
- overflowed_p = mips_elf_overflow_p (value, 25);
+ if (howto->partial_inplace)
+ addend = _bfd_mips_elf_sign_extend (addend, 25);
+ value = symbol + addend - ((p | 3) ^ 3);
+ if (was_local_p || h->root.root.type != bfd_link_hash_undefweak)
+ overflowed_p = mips_elf_overflow_p (value, 25);
value >>= howto->rightshift;
value &= howto->dst_mask;
break;
case E_MIPS_ARCH_64R2:
return bfd_mach_mipsisa64r2;
+
+ case E_MIPS_ARCH_32R6:
+ return bfd_mach_mipsisa32r6;
+
+ case E_MIPS_ARCH_64R6:
+ return bfd_mach_mipsisa64r6;
}
}
&& (asym->value & 1) != 0)
{
asym->value--;
- if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS)
+ if (MICROMIPS_P (abfd))
elfsym->internal_elf_sym.st_other
= ELF_ST_SET_MICROMIPS (elfsym->internal_elf_sym.st_other);
else
if (!MIPS_ELF_OPTIONS_SECTION_NAME_P (name))
return FALSE;
break;
+ case SHT_MIPS_ABIFLAGS:
+ if (!MIPS_ELF_ABIFLAGS_SECTION_NAME_P (name))
+ return FALSE;
+ flags = (SEC_LINK_ONCE | SEC_LINK_DUPLICATES_SAME_SIZE);
+ break;
case SHT_MIPS_DWARF:
if (! CONST_STRNEQ (name, ".debug_")
&& ! CONST_STRNEQ (name, ".zdebug_"))
return FALSE;
}
+ if (hdr->sh_type == SHT_MIPS_ABIFLAGS)
+ {
+ Elf_External_ABIFlags_v0 ext;
+
+ if (! bfd_get_section_contents (abfd, hdr->bfd_section,
+ &ext, 0, sizeof ext))
+ return FALSE;
+ bfd_mips_elf_swap_abiflags_v0_in (abfd, &ext,
+ &mips_elf_tdata (abfd)->abiflags);
+ if (mips_elf_tdata (abfd)->abiflags.version != 0)
+ return FALSE;
+ mips_elf_tdata (abfd)->abiflags_valid = TRUE;
+ }
+
/* FIXME: We should record sh_info for a .gptab section. */
/* For a .reginfo section, set the gp value in the tdata information
hdr->sh_entsize = 1;
hdr->sh_flags |= SHF_MIPS_NOSTRIP;
}
+ else if (CONST_STRNEQ (name, ".MIPS.abiflags"))
+ {
+ hdr->sh_type = SHT_MIPS_ABIFLAGS;
+ hdr->sh_entsize = sizeof (Elf_External_ABIFlags_v0);
+ }
else if (CONST_STRNEQ (name, ".debug_")
|| CONST_STRNEQ (name, ".zdebug_"))
{
case SHN_MIPS_TEXT:
/* This section is used in a shared object. */
- if (elf_tdata (abfd)->elf_text_section == NULL)
+ if (mips_elf_tdata (abfd)->elf_text_section == NULL)
{
asymbol *elf_text_symbol;
asection *elf_text_section;
/* Initialize the section. */
- elf_tdata (abfd)->elf_text_section = elf_text_section;
- elf_tdata (abfd)->elf_text_symbol = elf_text_symbol;
+ mips_elf_tdata (abfd)->elf_text_section = elf_text_section;
+ mips_elf_tdata (abfd)->elf_text_symbol = elf_text_symbol;
elf_text_section->symbol = elf_text_symbol;
- elf_text_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_text_symbol;
+ elf_text_section->symbol_ptr_ptr = &mips_elf_tdata (abfd)->elf_text_symbol;
elf_text_section->name = ".text";
elf_text_section->flags = SEC_NO_FLAGS;
/* This code used to do *secp = bfd_und_section_ptr if
info->shared. I don't know why, and that doesn't make sense,
so I took it out. */
- *secp = elf_tdata (abfd)->elf_text_section;
+ *secp = mips_elf_tdata (abfd)->elf_text_section;
break;
case SHN_MIPS_ACOMMON:
/* Fall through. XXX Can we treat this as allocated data? */
case SHN_MIPS_DATA:
/* This section is used in a shared object. */
- if (elf_tdata (abfd)->elf_data_section == NULL)
+ if (mips_elf_tdata (abfd)->elf_data_section == NULL)
{
asymbol *elf_data_symbol;
asection *elf_data_section;
/* Initialize the section. */
- elf_tdata (abfd)->elf_data_section = elf_data_section;
- elf_tdata (abfd)->elf_data_symbol = elf_data_symbol;
+ mips_elf_tdata (abfd)->elf_data_section = elf_data_section;
+ mips_elf_tdata (abfd)->elf_data_symbol = elf_data_symbol;
elf_data_section->symbol = elf_data_symbol;
- elf_data_section->symbol_ptr_ptr = &elf_tdata (abfd)->elf_data_symbol;
+ elf_data_section->symbol_ptr_ptr = &mips_elf_tdata (abfd)->elf_data_symbol;
elf_data_section->name = ".data";
elf_data_section->flags = SEC_NO_FLAGS;
/* This code used to do *secp = bfd_und_section_ptr if
info->shared. I don't know why, and that doesn't make sense,
so I took it out. */
- *secp = elf_tdata (abfd)->elf_data_section;
+ *secp = mips_elf_tdata (abfd)->elf_data_section;
break;
case SHN_MIPS_SUNDEFINED:
/* Change alignments of some sections. */
s = bfd_get_linker_section (abfd, ".hash");
if (s != NULL)
- bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd));
+ (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd));
+
s = bfd_get_linker_section (abfd, ".dynsym");
if (s != NULL)
- bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd));
+ (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd));
+
s = bfd_get_linker_section (abfd, ".dynstr");
if (s != NULL)
- bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd));
+ (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd));
+
/* ??? */
s = bfd_get_section_by_name (abfd, ".reginfo");
if (s != NULL)
- bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd));
+ (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd));
+
s = bfd_get_linker_section (abfd, ".dynamic");
if (s != NULL)
- bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd));
+ (void) bfd_set_section_alignment (abfd, s, MIPS_ELF_LOG_FILE_ALIGN (abfd));
}
if (!info->shared)
}
/* Create the .plt, .rel(a).plt, .dynbss and .rel(a).bss sections.
- Also create the _PROCEDURE_LINKAGE_TABLE symbol. */
+ Also, on VxWorks, create the _PROCEDURE_LINKAGE_TABLE_ symbol. */
if (!_bfd_elf_create_dynamic_sections (abfd, info))
return FALSE;
|| !htab->splt)
abort ();
- if (htab->is_vxworks)
- {
- /* Do the usual VxWorks handling. */
- if (!elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
- return FALSE;
-
- /* Work out the PLT sizes. */
- if (info->shared)
- {
- htab->plt_header_size
- = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry);
- htab->plt_entry_size
- = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry);
- }
- else
- {
- htab->plt_header_size
- = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry);
- htab->plt_entry_size
- = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry);
- }
- }
- else if (!info->shared)
- {
- /* All variants of the plt0 entry are the same size. */
- htab->plt_header_size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry);
- htab->plt_entry_size = 4 * ARRAY_SIZE (mips_exec_plt_entry);
- }
+ /* Do the usual VxWorks handling. */
+ if (htab->is_vxworks
+ && !elf_vxworks_create_dynamic_sections (abfd, info, &htab->srelplt2))
+ return FALSE;
return TRUE;
}
lo16_type = R_MIPS16_LO16;
else if (micromips_reloc_p (r_type))
lo16_type = R_MICROMIPS_LO16;
+ else if (r_type == R_MIPS_PCHI16)
+ lo16_type = R_MIPS_PCLO16;
else
lo16_type = R_MIPS_LO16;
return bfd_malloc_and_get_section (abfd, sec, contents);
}
+/* Make a new PLT record to keep internal data. */
+
+static struct plt_entry *
+mips_elf_make_plt_record (bfd *abfd)
+{
+ struct plt_entry *entry;
+
+ entry = bfd_zalloc (abfd, sizeof (*entry));
+ if (entry == NULL)
+ return NULL;
+
+ entry->stub_offset = MINUS_ONE;
+ entry->mips_offset = MINUS_ONE;
+ entry->comp_offset = MINUS_ONE;
+ entry->gotplt_index = MINUS_ONE;
+ return entry;
+}
+
/* Look through the relocs for a section during the first phase, and
- allocate space in the global offset table. */
+ allocate space in the global offset table and record the need for
+ standard MIPS and compressed procedure linkage table entries. */
bfd_boolean
_bfd_mips_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
/* Record this stub in an array of local symbol stubs for
this BFD. */
- if (elf_tdata (abfd)->local_stubs == NULL)
+ if (mips_elf_tdata (abfd)->local_stubs == NULL)
{
unsigned long symcount;
asection **n;
n = bfd_zalloc (abfd, amt);
if (n == NULL)
return FALSE;
- elf_tdata (abfd)->local_stubs = n;
+ mips_elf_tdata (abfd)->local_stubs = n;
}
sec->flags |= SEC_KEEP;
- elf_tdata (abfd)->local_stubs[r_symndx] = sec;
+ mips_elf_tdata (abfd)->local_stubs[r_symndx] = sec;
/* We don't need to set mips16_stubs_seen in this case.
That flag is used to see whether we need to look through
/* Record this stub in an array of local symbol call_stubs for
this BFD. */
- if (elf_tdata (abfd)->local_call_stubs == NULL)
+ if (mips_elf_tdata (abfd)->local_call_stubs == NULL)
{
unsigned long symcount;
asection **n;
n = bfd_zalloc (abfd, amt);
if (n == NULL)
return FALSE;
- elf_tdata (abfd)->local_call_stubs = n;
+ mips_elf_tdata (abfd)->local_call_stubs = n;
}
sec->flags |= SEC_KEEP;
- elf_tdata (abfd)->local_call_stubs[r_symndx] = sec;
+ mips_elf_tdata (abfd)->local_call_stubs[r_symndx] = sec;
/* We don't need to set mips16_stubs_seen in this case.
That flag is used to see whether we need to look through
unsigned int r_type;
struct elf_link_hash_entry *h;
bfd_boolean can_make_dynamic_p;
+ bfd_boolean call_reloc_p;
+ bfd_boolean constrain_symbol_p;
r_symndx = ELF_R_SYM (abfd, rel->r_info);
r_type = ELF_R_TYPE (abfd, rel->r_info);
else
{
h = sym_hashes[r_symndx - extsymoff];
- while (h != NULL
- && (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;
+ if (h != NULL)
+ {
+ while (h->root.type == bfd_link_hash_indirect
+ || h->root.type == bfd_link_hash_warning)
+ h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+ /* PR15323, ref flags aren't set for references in the
+ same object. */
+ h->root.non_ir_ref = 1;
+ }
}
/* Set CAN_MAKE_DYNAMIC_P to true if we can convert this
relocation into a dynamic one. */
can_make_dynamic_p = FALSE;
+
+ /* Set CALL_RELOC_P to true if the relocation is for a call,
+ and if pointer equality therefore doesn't matter. */
+ call_reloc_p = FALSE;
+
+ /* Set CONSTRAIN_SYMBOL_P if we need to take the relocation
+ into account when deciding how to define the symbol.
+ Relocations in nonallocatable sections such as .pdr and
+ .debug* should have no effect. */
+ constrain_symbol_p = ((sec->flags & SEC_ALLOC) != 0);
+
switch (r_type)
{
- case R_MIPS_GOT16:
case R_MIPS_CALL16:
case R_MIPS_CALL_HI16:
case R_MIPS_CALL_LO16:
+ case R_MIPS16_CALL16:
+ case R_MICROMIPS_CALL16:
+ case R_MICROMIPS_CALL_HI16:
+ case R_MICROMIPS_CALL_LO16:
+ call_reloc_p = TRUE;
+ /* Fall through. */
+
+ case R_MIPS_GOT16:
case R_MIPS_GOT_HI16:
case R_MIPS_GOT_LO16:
case R_MIPS_GOT_PAGE:
case R_MIPS_TLS_GD:
case R_MIPS_TLS_LDM:
case R_MIPS16_GOT16:
- case R_MIPS16_CALL16:
case R_MIPS16_TLS_GOTTPREL:
case R_MIPS16_TLS_GD:
case R_MIPS16_TLS_LDM:
case R_MICROMIPS_GOT16:
- case R_MICROMIPS_CALL16:
- case R_MICROMIPS_CALL_HI16:
- case R_MICROMIPS_CALL_LO16:
case R_MICROMIPS_GOT_HI16:
case R_MICROMIPS_GOT_LO16:
case R_MICROMIPS_GOT_PAGE:
bfd_set_error (bfd_error_bad_value);
return FALSE;
}
+ can_make_dynamic_p = TRUE;
break;
- /* This is just a hint; it can safely be ignored. Don't set
- has_static_relocs for the corresponding symbol. */
+ case R_MIPS_NONE:
case R_MIPS_JALR:
case R_MICROMIPS_JALR:
+ /* These relocations have empty fields and are purely there to
+ provide link information. The symbol value doesn't matter. */
+ constrain_symbol_p = FALSE;
+ break;
+
+ case R_MIPS_GPREL16:
+ case R_MIPS_GPREL32:
+ case R_MIPS16_GPREL:
+ case R_MICROMIPS_GPREL16:
+ /* GP-relative relocations always resolve to a definition in a
+ regular input file, ignoring the one-definition rule. This is
+ important for the GP setup sequence in NewABI code, which
+ always resolves to a local function even if other relocations
+ against the symbol wouldn't. */
+ constrain_symbol_p = FALSE;
break;
case R_MIPS_32:
can_make_dynamic_p = TRUE;
if (dynobj == NULL)
elf_hash_table (info)->dynobj = dynobj = abfd;
- break;
}
- /* For sections that are not SEC_ALLOC a copy reloc would be
- output if possible (implying questionable semantics for
- read-only data objects) or otherwise the final link would
- fail as ld.so will not process them and could not therefore
- handle any outstanding dynamic relocations.
-
- For such sections that are also SEC_DEBUGGING, we can avoid
- these problems by simply ignoring any relocs as these
- sections have a predefined use and we know it is safe to do
- so.
-
- This is needed in cases such as a global symbol definition
- in a shared library causing a common symbol from an object
- file to be converted to an undefined reference. If that
- happens, then all the relocations against this symbol from
- SEC_DEBUGGING sections in the object file will resolve to
- nil. */
- if ((sec->flags & SEC_DEBUGGING) != 0)
- break;
- /* Fall through. */
-
- default:
- /* Most static relocations require pointer equality, except
- for branches. */
- if (h)
- h->pointer_equality_needed = TRUE;
- /* Fall through. */
+ break;
case R_MIPS_26:
case R_MIPS_PC16:
+ case R_MIPS_PC21_S2:
+ case R_MIPS_PC26_S2:
case R_MIPS16_26:
case R_MICROMIPS_26_S1:
case R_MICROMIPS_PC7_S1:
case R_MICROMIPS_PC10_S1:
case R_MICROMIPS_PC16_S1:
case R_MICROMIPS_PC23_S2:
- if (h)
- ((struct mips_elf_link_hash_entry *) h)->has_static_relocs = TRUE;
+ call_reloc_p = TRUE;
break;
}
if (h)
{
+ if (constrain_symbol_p)
+ {
+ if (!can_make_dynamic_p)
+ ((struct mips_elf_link_hash_entry *) h)->has_static_relocs = 1;
+
+ if (!call_reloc_p)
+ h->pointer_equality_needed = 1;
+
+ /* We must not create a stub for a symbol that has
+ relocations related to taking the function's address.
+ This doesn't apply to VxWorks, where CALL relocs refer
+ to a .got.plt entry instead of a normal .got entry. */
+ if (!htab->is_vxworks && (!can_make_dynamic_p || !call_reloc_p))
+ ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = TRUE;
+ }
+
/* Relocations against the special VxWorks __GOTT_BASE__ and
__GOTT_INDEX__ symbols must be left to the loader. Allocate
room for them in .rela.dyn. */
case R_MIPS_GOT_PAGE:
case R_MICROMIPS_GOT_PAGE:
- /* If this is a global, overridable symbol, GOT_PAGE will
- decay to GOT_DISP, so we'll need a GOT entry for it. */
- if (h)
- {
- struct mips_elf_link_hash_entry *hmips =
- (struct mips_elf_link_hash_entry *) h;
-
- /* This symbol is definitely not overridable. */
- if (hmips->root.def_regular
- && ! (info->shared && ! info->symbolic
- && ! hmips->root.forced_local))
- h = NULL;
- }
- /* Fall through. */
-
case R_MIPS16_GOT16:
case R_MIPS_GOT16:
case R_MIPS_GOT_HI16:
}
else
addend = rel->r_addend;
- if (!mips_elf_record_got_page_entry (info, abfd, r_symndx,
- addend))
+ if (!mips_elf_record_got_page_ref (info, abfd, r_symndx,
+ h, addend))
return FALSE;
+
+ if (h)
+ {
+ struct mips_elf_link_hash_entry *hmips =
+ (struct mips_elf_link_hash_entry *) h;
+
+ /* This symbol is definitely not overridable. */
+ if (hmips->root.def_regular
+ && ! (info->shared && ! info->symbolic
+ && ! hmips->root.forced_local))
+ h = NULL;
+ }
}
+ /* If this is a global, overridable symbol, GOT_PAGE will
+ decay to GOT_DISP, so we'll need a GOT entry for it. */
/* Fall through. */
case R_MIPS_GOT_DISP:
break;
}
- /* We must not create a stub for a symbol that has relocations
- related to taking the function's address. This doesn't apply to
- VxWorks, where CALL relocs refer to a .got.plt entry instead of
- a normal .got entry. */
- if (!htab->is_vxworks && h != NULL)
- switch (r_type)
- {
- default:
- ((struct mips_elf_link_hash_entry *) h)->no_fn_stub = TRUE;
- break;
- case R_MIPS16_CALL16:
- case R_MIPS_CALL16:
- case R_MIPS_CALL_HI16:
- case R_MIPS_CALL_LO16:
- case R_MIPS_JALR:
- case R_MICROMIPS_CALL16:
- case R_MICROMIPS_CALL_HI16:
- case R_MICROMIPS_CALL_LO16:
- case R_MICROMIPS_JALR:
- break;
- }
+ /* Record the need for a PLT entry. At this point we don't know
+ yet if we are going to create a PLT in the first place, but
+ we only record whether the relocation requires a standard MIPS
+ or a compressed code entry anyway. If we don't make a PLT after
+ all, then we'll just ignore these arrangements. Likewise if
+ a PLT entry is not created because the symbol is satisfied
+ locally. */
+ if (h != NULL
+ && jal_reloc_p (r_type)
+ && !SYMBOL_CALLS_LOCAL (info, h))
+ {
+ if (h->plt.plist == NULL)
+ h->plt.plist = mips_elf_make_plt_record (abfd);
+ if (h->plt.plist == NULL)
+ return FALSE;
+
+ if (r_type == R_MIPS_26)
+ h->plt.plist->need_mips = TRUE;
+ else
+ h->plt.plist->need_comp = TRUE;
+ }
/* See if this reloc would need to refer to a MIPS16 hard-float stub,
if there is one. We only need to handle global symbols here;
&& !(ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
&& h->root.type == bfd_link_hash_undefweak))
{
- /* If this is the first symbol to need a PLT entry, allocate room
- for the header. */
- if (htab->splt->size == 0)
+ bfd_boolean micromips_p = MICROMIPS_P (info->output_bfd);
+ bfd_boolean newabi_p = NEWABI_P (info->output_bfd);
+
+ /* If this is the first symbol to need a PLT entry, then make some
+ basic setup. Also work out PLT entry sizes. We'll need them
+ for PLT offset calculations. */
+ if (htab->plt_mips_offset + htab->plt_comp_offset == 0)
{
BFD_ASSERT (htab->sgotplt->size == 0);
+ BFD_ASSERT (htab->plt_got_index == 0);
/* If we're using the PLT additions to the psABI, each PLT
entry is 16 bytes and the PLT0 entry is 32 bytes.
MIPS_ELF_LOG_FILE_ALIGN (dynobj)))
return FALSE;
- htab->splt->size += htab->plt_header_size;
-
/* On non-VxWorks targets, the first two entries in .got.plt
are reserved. */
if (!htab->is_vxworks)
- htab->sgotplt->size
- += get_elf_backend_data (dynobj)->got_header_size;
+ htab->plt_got_index
+ += (get_elf_backend_data (dynobj)->got_header_size
+ / MIPS_ELF_GOT_SIZE (dynobj));
/* On VxWorks, also allocate room for the header's
.rela.plt.unloaded entries. */
if (htab->is_vxworks && !info->shared)
htab->srelplt2->size += 2 * sizeof (Elf32_External_Rela);
+
+ /* Now work out the sizes of individual PLT entries. */
+ if (htab->is_vxworks && info->shared)
+ htab->plt_mips_entry_size
+ = 4 * ARRAY_SIZE (mips_vxworks_shared_plt_entry);
+ else if (htab->is_vxworks)
+ htab->plt_mips_entry_size
+ = 4 * ARRAY_SIZE (mips_vxworks_exec_plt_entry);
+ else if (newabi_p)
+ htab->plt_mips_entry_size
+ = 4 * ARRAY_SIZE (mips_exec_plt_entry);
+ else if (!micromips_p)
+ {
+ htab->plt_mips_entry_size
+ = 4 * ARRAY_SIZE (mips_exec_plt_entry);
+ htab->plt_comp_entry_size
+ = 2 * ARRAY_SIZE (mips16_o32_exec_plt_entry);
+ }
+ else if (htab->insn32)
+ {
+ htab->plt_mips_entry_size
+ = 4 * ARRAY_SIZE (mips_exec_plt_entry);
+ htab->plt_comp_entry_size
+ = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt_entry);
+ }
+ else
+ {
+ htab->plt_mips_entry_size
+ = 4 * ARRAY_SIZE (mips_exec_plt_entry);
+ htab->plt_comp_entry_size
+ = 2 * ARRAY_SIZE (micromips_o32_exec_plt_entry);
+ }
}
- /* Assign the next .plt entry to this symbol. */
- h->plt.offset = htab->splt->size;
- htab->splt->size += htab->plt_entry_size;
+ if (h->plt.plist == NULL)
+ h->plt.plist = mips_elf_make_plt_record (dynobj);
+ if (h->plt.plist == NULL)
+ return FALSE;
+
+ /* There are no defined MIPS16 or microMIPS PLT entries for VxWorks,
+ n32 or n64, so always use a standard entry there.
+
+ If the symbol has a MIPS16 call stub and gets a PLT entry, then
+ all MIPS16 calls will go via that stub, and there is no benefit
+ to having a MIPS16 entry. And in the case of call_stub a
+ standard entry actually has to be used as the stub ends with a J
+ instruction. */
+ if (newabi_p
+ || htab->is_vxworks
+ || hmips->call_stub
+ || hmips->call_fp_stub)
+ {
+ h->plt.plist->need_mips = TRUE;
+ h->plt.plist->need_comp = FALSE;
+ }
+
+ /* Otherwise, if there are no direct calls to the function, we
+ have a free choice of whether to use standard or compressed
+ entries. Prefer microMIPS entries if the object is known to
+ contain microMIPS code, so that it becomes possible to create
+ pure microMIPS binaries. Prefer standard entries otherwise,
+ because MIPS16 ones are no smaller and are usually slower. */
+ if (!h->plt.plist->need_mips && !h->plt.plist->need_comp)
+ {
+ if (micromips_p)
+ h->plt.plist->need_comp = TRUE;
+ else
+ h->plt.plist->need_mips = TRUE;
+ }
+
+ if (h->plt.plist->need_mips)
+ {
+ h->plt.plist->mips_offset = htab->plt_mips_offset;
+ htab->plt_mips_offset += htab->plt_mips_entry_size;
+ }
+ if (h->plt.plist->need_comp)
+ {
+ h->plt.plist->comp_offset = htab->plt_comp_offset;
+ htab->plt_comp_offset += htab->plt_comp_entry_size;
+ }
+
+ /* Reserve the corresponding .got.plt entry now too. */
+ h->plt.plist->gotplt_index = htab->plt_got_index++;
/* If the output file has no definition of the symbol, set the
symbol's value to the address of the stub. */
if (!info->shared && !h->def_regular)
- {
- h->root.u.def.section = htab->splt;
- h->root.u.def.value = h->plt.offset;
- /* For VxWorks, point at the PLT load stub rather than the
- lazy resolution stub; this stub will become the canonical
- function address. */
- if (htab->is_vxworks)
- h->root.u.def.value += 8;
- }
+ hmips->use_plt_entry = TRUE;
- /* Make room for the .got.plt entry and the R_MIPS_JUMP_SLOT
- relocation. */
- htab->sgotplt->size += MIPS_ELF_GOT_SIZE (dynobj);
+ /* Make room for the R_MIPS_JUMP_SLOT relocation. */
htab->srelplt->size += (htab->is_vxworks
? MIPS_ELF_RELA_SIZE (dynobj)
: MIPS_ELF_REL_SIZE (dynobj));
_bfd_mips_elf_always_size_sections (bfd *output_bfd,
struct bfd_link_info *info)
{
- asection *ri;
+ asection *sect;
struct mips_elf_link_hash_table *htab;
struct mips_htab_traverse_info hti;
BFD_ASSERT (htab != NULL);
/* The .reginfo section has a fixed size. */
- ri = bfd_get_section_by_name (output_bfd, ".reginfo");
- if (ri != NULL)
- bfd_set_section_size (output_bfd, ri, sizeof (Elf32_External_RegInfo));
+ sect = bfd_get_section_by_name (output_bfd, ".reginfo");
+ if (sect != NULL)
+ bfd_set_section_size (output_bfd, sect, sizeof (Elf32_External_RegInfo));
+
+ /* The .MIPS.abiflags section has a fixed size. */
+ sect = bfd_get_section_by_name (output_bfd, ".MIPS.abiflags");
+ if (sect != NULL)
+ bfd_set_section_size (output_bfd, sect, sizeof (Elf_External_ABIFlags_v0));
hti.info = info;
hti.output_bfd = output_bfd;
/* Allocate room for the reserved entries. VxWorks always reserves
3 entries; other objects only reserve 2 entries. */
- BFD_ASSERT (g->assigned_gotno == 0);
+ BFD_ASSERT (g->assigned_low_gotno == 0);
if (htab->is_vxworks)
htab->reserved_gotno = 3;
else
htab->reserved_gotno = 2;
g->local_gotno += htab->reserved_gotno;
- g->assigned_gotno = htab->reserved_gotno;
-
- /* Replace entries for indirect and warning symbols with entries for
- the target symbol. */
- if (!mips_elf_resolve_final_got_entries (g))
- return FALSE;
+ g->assigned_low_gotno = htab->reserved_gotno;
/* Decide which symbols need to go in the global part of the GOT and
count the number of reloc-only GOT symbols. */
mips_elf_link_hash_traverse (htab, mips_elf_count_got_symbols, info);
+ if (!mips_elf_resolve_final_got_entries (info, g))
+ return FALSE;
+
/* Calculate the total loadable size of the output. That
will give us the maximum number of GOT_PAGE entries
required. */
- for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
{
asection *subsection;
sections. Is 5 enough? */
page_gotno = (loadable_size >> 16) + 5;
- /* Choose the smaller of the two estimates; both are intended to be
+ /* Choose the smaller of the two page estimates; both are intended to be
conservative. */
if (page_gotno > g->page_gotno)
page_gotno = g->page_gotno;
g->local_gotno += page_gotno;
-
- /* Count the number of GOT entries and TLS relocs. */
- tga.info = info;
- tga.g = g;
- htab_traverse (g->got_entries, mips_elf_count_got_entries, &tga);
+ g->assigned_high_gotno = g->local_gotno - 1;
s->size += g->local_gotno * MIPS_ELF_GOT_SIZE (output_bfd);
s->size += g->global_gotno * MIPS_ELF_GOT_SIZE (output_bfd);
/* VxWorks does not support multiple GOTs. It initializes $gp to
__GOTT_BASE__[__GOTT_INDEX__], the value of which is set by the
dynamic loader. */
- if (htab->is_vxworks)
- {
- /* VxWorks executables do not need a GOT. */
- if (info->shared)
- {
- /* Each VxWorks GOT entry needs an explicit relocation. */
- unsigned int count;
-
- count = g->global_gotno + g->local_gotno - htab->reserved_gotno;
- if (count)
- mips_elf_allocate_dynamic_relocations (dynobj, info, count);
- }
- }
- else if (s->size > MIPS_ELF_GOT_MAX_SIZE (info))
+ if (!htab->is_vxworks && s->size > MIPS_ELF_GOT_MAX_SIZE (info))
{
if (!mips_elf_multi_got (output_bfd, info, s, page_gotno))
return FALSE;
{
/* Record that all bfds use G. This also has the effect of freeing
the per-bfd GOTs, which we no longer need. */
- for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link_next)
+ for (ibfd = info->input_bfds; ibfd; ibfd = ibfd->link.next)
if (mips_elf_bfd_got (ibfd, FALSE))
mips_elf_replace_bfd_got (ibfd, g);
mips_elf_replace_bfd_got (output_bfd, g);
BFD_ASSERT (g->tls_assigned_gotno
== g->global_gotno + g->local_gotno + g->tls_gotno);
+ /* Each VxWorks GOT entry needs an explicit relocation. */
+ if (htab->is_vxworks && info->shared)
+ g->relocs += g->global_gotno + g->local_gotno - htab->reserved_gotno;
+
/* Allocate room for the TLS relocations. */
if (g->relocs)
mips_elf_allocate_dynamic_relocations (dynobj, info, g->relocs);
dynsymcount = (elf_hash_table (info)->dynsymcount
+ count_section_dynsyms (output_bfd, info));
- /* Determine the size of one stub entry. */
- htab->function_stub_size = (dynsymcount > 0x10000
- ? MIPS_FUNCTION_STUB_BIG_SIZE
- : MIPS_FUNCTION_STUB_NORMAL_SIZE);
+ /* Determine the size of one stub entry. There's no disadvantage
+ from using microMIPS code here, so for the sake of pure-microMIPS
+ binaries we prefer it whenever there's any microMIPS code in
+ output produced at all. This has a benefit of stubs being
+ shorter by 4 bytes each too, unless in the insn32 mode. */
+ if (!MICROMIPS_P (output_bfd))
+ htab->function_stub_size = (dynsymcount > 0x10000
+ ? MIPS_FUNCTION_STUB_BIG_SIZE
+ : MIPS_FUNCTION_STUB_NORMAL_SIZE);
+ else if (htab->insn32)
+ htab->function_stub_size = (dynsymcount > 0x10000
+ ? MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE
+ : MICROMIPS_INSN32_FUNCTION_STUB_NORMAL_SIZE);
+ else
+ htab->function_stub_size = (dynsymcount > 0x10000
+ ? MICROMIPS_FUNCTION_STUB_BIG_SIZE
+ : MICROMIPS_FUNCTION_STUB_NORMAL_SIZE);
htab->sstubs->size = htab->lazy_stub_count * htab->function_stub_size;
}
-/* A mips_elf_link_hash_traverse callback for which DATA points to the
- MIPS hash table. If H needs a traditional MIPS lazy-binding stub,
- allocate an entry in the stubs section. */
+/* A mips_elf_link_hash_traverse callback for which DATA points to a
+ mips_htab_traverse_info. If H needs a traditional MIPS lazy-binding
+ stub, allocate an entry in the stubs section. */
static bfd_boolean
-mips_elf_allocate_lazy_stub (struct mips_elf_link_hash_entry *h, void **data)
+mips_elf_allocate_lazy_stub (struct mips_elf_link_hash_entry *h, void *data)
{
+ struct mips_htab_traverse_info *hti = data;
struct mips_elf_link_hash_table *htab;
+ struct bfd_link_info *info;
+ bfd *output_bfd;
+
+ info = hti->info;
+ output_bfd = hti->output_bfd;
+ htab = mips_elf_hash_table (info);
+ BFD_ASSERT (htab != NULL);
- htab = (struct mips_elf_link_hash_table *) data;
if (h->needs_lazy_stub)
{
+ bfd_boolean micromips_p = MICROMIPS_P (output_bfd);
+ unsigned int other = micromips_p ? STO_MICROMIPS : 0;
+ bfd_vma isa_bit = micromips_p;
+
+ BFD_ASSERT (htab->root.dynobj != NULL);
+ if (h->root.plt.plist == NULL)
+ h->root.plt.plist = mips_elf_make_plt_record (htab->sstubs->owner);
+ if (h->root.plt.plist == NULL)
+ {
+ hti->error = TRUE;
+ return FALSE;
+ }
h->root.root.u.def.section = htab->sstubs;
- h->root.root.u.def.value = htab->sstubs->size;
- h->root.plt.offset = htab->sstubs->size;
+ h->root.root.u.def.value = htab->sstubs->size + isa_bit;
+ h->root.plt.plist->stub_offset = htab->sstubs->size;
+ h->root.other = other;
htab->sstubs->size += htab->function_stub_size;
}
return TRUE;
/* Allocate offsets in the stubs section to each symbol that needs one.
Set the final size of the .MIPS.stub section. */
-static void
+static bfd_boolean
mips_elf_lay_out_lazy_stubs (struct bfd_link_info *info)
{
+ bfd *output_bfd = info->output_bfd;
+ bfd_boolean micromips_p = MICROMIPS_P (output_bfd);
+ unsigned int other = micromips_p ? STO_MICROMIPS : 0;
+ bfd_vma isa_bit = micromips_p;
struct mips_elf_link_hash_table *htab;
+ struct mips_htab_traverse_info hti;
+ struct elf_link_hash_entry *h;
+ bfd *dynobj;
htab = mips_elf_hash_table (info);
BFD_ASSERT (htab != NULL);
if (htab->lazy_stub_count == 0)
- return;
+ return TRUE;
htab->sstubs->size = 0;
- mips_elf_link_hash_traverse (htab, mips_elf_allocate_lazy_stub, htab);
+ hti.info = info;
+ hti.output_bfd = output_bfd;
+ hti.error = FALSE;
+ mips_elf_link_hash_traverse (htab, mips_elf_allocate_lazy_stub, &hti);
+ if (hti.error)
+ return FALSE;
htab->sstubs->size += htab->function_stub_size;
BFD_ASSERT (htab->sstubs->size
== htab->lazy_stub_count * htab->function_stub_size);
+
+ dynobj = elf_hash_table (info)->dynobj;
+ BFD_ASSERT (dynobj != NULL);
+ h = _bfd_elf_define_linkage_sym (dynobj, info, htab->sstubs, "_MIPS_STUBS_");
+ if (h == NULL)
+ return FALSE;
+ h->root.u.def.value = isa_bit;
+ h->other = other;
+ h->type = STT_FUNC;
+
+ return TRUE;
+}
+
+/* A mips_elf_link_hash_traverse callback for which DATA points to a
+ bfd_link_info. If H uses the address of a PLT entry as the value
+ of the symbol, then set the entry in the symbol table now. Prefer
+ a standard MIPS PLT entry. */
+
+static bfd_boolean
+mips_elf_set_plt_sym_value (struct mips_elf_link_hash_entry *h, void *data)
+{
+ struct bfd_link_info *info = data;
+ bfd_boolean micromips_p = MICROMIPS_P (info->output_bfd);
+ struct mips_elf_link_hash_table *htab;
+ unsigned int other;
+ bfd_vma isa_bit;
+ bfd_vma val;
+
+ htab = mips_elf_hash_table (info);
+ BFD_ASSERT (htab != NULL);
+
+ if (h->use_plt_entry)
+ {
+ BFD_ASSERT (h->root.plt.plist != NULL);
+ BFD_ASSERT (h->root.plt.plist->mips_offset != MINUS_ONE
+ || h->root.plt.plist->comp_offset != MINUS_ONE);
+
+ val = htab->plt_header_size;
+ if (h->root.plt.plist->mips_offset != MINUS_ONE)
+ {
+ isa_bit = 0;
+ val += h->root.plt.plist->mips_offset;
+ other = 0;
+ }
+ else
+ {
+ isa_bit = 1;
+ val += htab->plt_mips_offset + h->root.plt.plist->comp_offset;
+ other = micromips_p ? STO_MICROMIPS : STO_MIPS16;
+ }
+ val += isa_bit;
+ /* For VxWorks, point at the PLT load stub rather than the lazy
+ resolution stub; this stub will become the canonical function
+ address. */
+ if (htab->is_vxworks)
+ val += 8;
+
+ h->root.root.u.def.section = htab->splt;
+ h->root.root.u.def.value = val;
+ h->root.other = other;
+ }
+
+ return TRUE;
}
/* Set the sizes of the dynamic sections. */
= (bfd_byte *) ELF_DYNAMIC_INTERPRETER (output_bfd);
}
- /* Create a symbol for the PLT, if we know that we are using it. */
- if (htab->splt && htab->splt->size > 0 && htab->root.hplt == NULL)
+ /* Figure out the size of the PLT header if we know that we
+ are using it. For the sake of cache alignment always use
+ a standard header whenever any standard entries are present
+ even if microMIPS entries are present as well. This also
+ lets the microMIPS header rely on the value of $v0 only set
+ by microMIPS entries, for a small size reduction.
+
+ Set symbol table entry values for symbols that use the
+ address of their PLT entry now that we can calculate it.
+
+ Also create the _PROCEDURE_LINKAGE_TABLE_ symbol if we
+ haven't already in _bfd_elf_create_dynamic_sections. */
+ if (htab->splt && htab->plt_mips_offset + htab->plt_comp_offset != 0)
{
+ bfd_boolean micromips_p = (MICROMIPS_P (output_bfd)
+ && !htab->plt_mips_offset);
+ unsigned int other = micromips_p ? STO_MICROMIPS : 0;
+ bfd_vma isa_bit = micromips_p;
struct elf_link_hash_entry *h;
+ bfd_vma size;
BFD_ASSERT (htab->use_plts_and_copy_relocs);
+ BFD_ASSERT (htab->sgotplt->size == 0);
+ BFD_ASSERT (htab->splt->size == 0);
+
+ if (htab->is_vxworks && info->shared)
+ size = 4 * ARRAY_SIZE (mips_vxworks_shared_plt0_entry);
+ else if (htab->is_vxworks)
+ size = 4 * ARRAY_SIZE (mips_vxworks_exec_plt0_entry);
+ else if (ABI_64_P (output_bfd))
+ size = 4 * ARRAY_SIZE (mips_n64_exec_plt0_entry);
+ else if (ABI_N32_P (output_bfd))
+ size = 4 * ARRAY_SIZE (mips_n32_exec_plt0_entry);
+ else if (!micromips_p)
+ size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry);
+ else if (htab->insn32)
+ size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry);
+ else
+ size = 2 * ARRAY_SIZE (micromips_o32_exec_plt0_entry);
- h = _bfd_elf_define_linkage_sym (dynobj, info, htab->splt,
- "_PROCEDURE_LINKAGE_TABLE_");
- htab->root.hplt = h;
- if (h == NULL)
- return FALSE;
+ htab->plt_header_is_comp = micromips_p;
+ htab->plt_header_size = size;
+ htab->splt->size = (size
+ + htab->plt_mips_offset
+ + htab->plt_comp_offset);
+ htab->sgotplt->size = (htab->plt_got_index
+ * MIPS_ELF_GOT_SIZE (dynobj));
+
+ mips_elf_link_hash_traverse (htab, mips_elf_set_plt_sym_value, info);
+
+ if (htab->root.hplt == NULL)
+ {
+ h = _bfd_elf_define_linkage_sym (dynobj, info, htab->splt,
+ "_PROCEDURE_LINKAGE_TABLE_");
+ htab->root.hplt = h;
+ if (h == NULL)
+ return FALSE;
+ }
+
+ h = htab->root.hplt;
+ h->root.u.def.value = isa_bit;
+ h->other = other;
h->type = STT_FUNC;
}
}
const char *name;
bfd_vma value = 0;
reloc_howto_type *howto;
- bfd_boolean cross_mode_jump_p;
+ bfd_boolean cross_mode_jump_p = FALSE;
/* TRUE if the relocation is a RELA relocation, rather than a
REL relocation. */
bfd_boolean rela_relocation_p = TRUE;
(info, msg, name, input_bfd, input_section, rel->r_offset);
return FALSE;
}
+ if (aligned_pcrel_reloc_p (howto->type))
+ {
+ msg = _("PC-relative load from unaligned address");
+ info->callbacks->warning
+ (info, msg, name, input_bfd, input_section, rel->r_offset);
+ return FALSE;
+ }
/* Fall through. */
default:
BFD_ASSERT (!htab->is_vxworks);
- if (h->plt.offset != MINUS_ONE && hmips->no_fn_stub)
+ if (h->plt.plist != NULL
+ && (h->plt.plist->mips_offset != MINUS_ONE
+ || h->plt.plist->comp_offset != MINUS_ONE))
{
/* We've decided to create a PLT entry for this symbol. */
bfd_byte *loc;
- bfd_vma header_address, plt_index, got_address;
+ bfd_vma header_address, got_address;
bfd_vma got_address_high, got_address_low, load;
- const bfd_vma *plt_entry;
+ bfd_vma got_index;
+ bfd_vma isa_bit;
+
+ got_index = h->plt.plist->gotplt_index;
BFD_ASSERT (htab->use_plts_and_copy_relocs);
BFD_ASSERT (h->dynindx != -1);
BFD_ASSERT (htab->splt != NULL);
- BFD_ASSERT (h->plt.offset <= htab->splt->size);
+ BFD_ASSERT (got_index != MINUS_ONE);
BFD_ASSERT (!h->def_regular);
/* Calculate the address of the PLT header. */
+ isa_bit = htab->plt_header_is_comp;
header_address = (htab->splt->output_section->vma
- + htab->splt->output_offset);
-
- /* Calculate the index of the entry. */
- plt_index = ((h->plt.offset - htab->plt_header_size)
- / htab->plt_entry_size);
+ + htab->splt->output_offset + isa_bit);
/* Calculate the address of the .got.plt entry. */
got_address = (htab->sgotplt->output_section->vma
+ htab->sgotplt->output_offset
- + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj));
+ + got_index * MIPS_ELF_GOT_SIZE (dynobj));
+
got_address_high = ((got_address + 0x8000) >> 16) & 0xffff;
got_address_low = got_address & 0xffff;
/* Initially point the .got.plt entry at the PLT header. */
- loc = (htab->sgotplt->contents
- + (2 + plt_index) * MIPS_ELF_GOT_SIZE (dynobj));
+ loc = (htab->sgotplt->contents + got_index * MIPS_ELF_GOT_SIZE (dynobj));
if (ABI_64_P (output_bfd))
bfd_put_64 (output_bfd, header_address, loc);
else
bfd_put_32 (output_bfd, header_address, loc);
- /* Find out where the .plt entry should go. */
- loc = htab->splt->contents + h->plt.offset;
+ /* Now handle the PLT itself. First the standard entry (the order
+ does not matter, we just have to pick one). */
+ if (h->plt.plist->mips_offset != MINUS_ONE)
+ {
+ const bfd_vma *plt_entry;
+ bfd_vma plt_offset;
- /* Pick the load opcode. */
- load = MIPS_ELF_LOAD_WORD (output_bfd);
+ plt_offset = htab->plt_header_size + h->plt.plist->mips_offset;
- /* Fill in the PLT entry itself. */
- plt_entry = mips_exec_plt_entry;
- bfd_put_32 (output_bfd, plt_entry[0] | got_address_high, loc);
- bfd_put_32 (output_bfd, plt_entry[1] | got_address_low | load, loc + 4);
+ BFD_ASSERT (plt_offset <= htab->splt->size);
- if (! LOAD_INTERLOCKS_P (output_bfd))
- {
- bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 8);
- bfd_put_32 (output_bfd, plt_entry[3], loc + 12);
+ /* Find out where the .plt entry should go. */
+ loc = htab->splt->contents + plt_offset;
+
+ /* Pick the load opcode. */
+ load = MIPS_ELF_LOAD_WORD (output_bfd);
+
+ /* Fill in the PLT entry itself. */
+
+ if (MIPSR6_P (output_bfd))
+ plt_entry = mipsr6_exec_plt_entry;
+ else
+ plt_entry = mips_exec_plt_entry;
+ bfd_put_32 (output_bfd, plt_entry[0] | got_address_high, loc);
+ bfd_put_32 (output_bfd, plt_entry[1] | got_address_low | load,
+ loc + 4);
+
+ if (! LOAD_INTERLOCKS_P (output_bfd))
+ {
+ bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 8);
+ bfd_put_32 (output_bfd, plt_entry[3], loc + 12);
+ }
+ else
+ {
+ bfd_put_32 (output_bfd, plt_entry[3], loc + 8);
+ bfd_put_32 (output_bfd, plt_entry[2] | got_address_low,
+ loc + 12);
+ }
}
- else
+
+ /* Now the compressed entry. They come after any standard ones. */
+ if (h->plt.plist->comp_offset != MINUS_ONE)
{
- bfd_put_32 (output_bfd, plt_entry[3], loc + 8);
- bfd_put_32 (output_bfd, plt_entry[2] | got_address_low, loc + 12);
+ bfd_vma plt_offset;
+
+ plt_offset = (htab->plt_header_size + htab->plt_mips_offset
+ + h->plt.plist->comp_offset);
+
+ BFD_ASSERT (plt_offset <= htab->splt->size);
+
+ /* Find out where the .plt entry should go. */
+ loc = htab->splt->contents + plt_offset;
+
+ /* Fill in the PLT entry itself. */
+ if (!MICROMIPS_P (output_bfd))
+ {
+ const bfd_vma *plt_entry = mips16_o32_exec_plt_entry;
+
+ bfd_put_16 (output_bfd, plt_entry[0], loc);
+ bfd_put_16 (output_bfd, plt_entry[1], loc + 2);
+ bfd_put_16 (output_bfd, plt_entry[2], loc + 4);
+ bfd_put_16 (output_bfd, plt_entry[3], loc + 6);
+ bfd_put_16 (output_bfd, plt_entry[4], loc + 8);
+ bfd_put_16 (output_bfd, plt_entry[5], loc + 10);
+ bfd_put_32 (output_bfd, got_address, loc + 12);
+ }
+ else if (htab->insn32)
+ {
+ const bfd_vma *plt_entry = micromips_insn32_o32_exec_plt_entry;
+
+ bfd_put_16 (output_bfd, plt_entry[0], loc);
+ bfd_put_16 (output_bfd, got_address_high, loc + 2);
+ bfd_put_16 (output_bfd, plt_entry[2], loc + 4);
+ bfd_put_16 (output_bfd, got_address_low, loc + 6);
+ bfd_put_16 (output_bfd, plt_entry[4], loc + 8);
+ bfd_put_16 (output_bfd, plt_entry[5], loc + 10);
+ bfd_put_16 (output_bfd, plt_entry[6], loc + 12);
+ bfd_put_16 (output_bfd, got_address_low, loc + 14);
+ }
+ else
+ {
+ const bfd_vma *plt_entry = micromips_o32_exec_plt_entry;
+ bfd_signed_vma gotpc_offset;
+ bfd_vma loc_address;
+
+ BFD_ASSERT (got_address % 4 == 0);
+
+ loc_address = (htab->splt->output_section->vma
+ + htab->splt->output_offset + plt_offset);
+ gotpc_offset = got_address - ((loc_address | 3) ^ 3);
+
+ /* ADDIUPC has a span of +/-16MB, check we're in range. */
+ if (gotpc_offset + 0x1000000 >= 0x2000000)
+ {
+ (*_bfd_error_handler)
+ (_("%B: `%A' offset of %ld from `%A' "
+ "beyond the range of ADDIUPC"),
+ output_bfd,
+ htab->sgotplt->output_section,
+ htab->splt->output_section,
+ (long) gotpc_offset);
+ bfd_set_error (bfd_error_no_error);
+ return FALSE;
+ }
+ bfd_put_16 (output_bfd,
+ plt_entry[0] | ((gotpc_offset >> 18) & 0x7f), loc);
+ bfd_put_16 (output_bfd, (gotpc_offset >> 2) & 0xffff, loc + 2);
+ bfd_put_16 (output_bfd, plt_entry[2], loc + 4);
+ bfd_put_16 (output_bfd, plt_entry[3], loc + 6);
+ bfd_put_16 (output_bfd, plt_entry[4], loc + 8);
+ bfd_put_16 (output_bfd, plt_entry[5], loc + 10);
+ }
}
/* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */
mips_elf_output_dynamic_relocation (output_bfd, htab->srelplt,
- plt_index, h->dynindx,
+ got_index - 2, h->dynindx,
R_MIPS_JUMP_SLOT, got_address);
/* We distinguish between PLT entries and lazy-binding stubs by
binary where pointer equality matters. */
sym->st_shndx = SHN_UNDEF;
if (h->pointer_equality_needed)
- sym->st_other = STO_MIPS_PLT;
+ sym->st_other = ELF_ST_SET_MIPS_PLT (sym->st_other);
else
- sym->st_value = 0;
+ {
+ sym->st_value = 0;
+ sym->st_other = 0;
+ }
}
- else if (h->plt.offset != MINUS_ONE)
+
+ if (h->plt.plist != NULL && h->plt.plist->stub_offset != MINUS_ONE)
{
/* We've decided to create a lazy-binding stub. */
+ bfd_boolean micromips_p = MICROMIPS_P (output_bfd);
+ unsigned int other = micromips_p ? STO_MICROMIPS : 0;
+ bfd_vma stub_size = htab->function_stub_size;
bfd_byte stub[MIPS_FUNCTION_STUB_BIG_SIZE];
+ bfd_vma isa_bit = micromips_p;
+ bfd_vma stub_big_size;
+
+ if (!micromips_p)
+ stub_big_size = MIPS_FUNCTION_STUB_BIG_SIZE;
+ else if (htab->insn32)
+ stub_big_size = MICROMIPS_INSN32_FUNCTION_STUB_BIG_SIZE;
+ else
+ stub_big_size = MICROMIPS_FUNCTION_STUB_BIG_SIZE;
/* This symbol has a stub. Set it up. */
BFD_ASSERT (h->dynindx != -1);
- BFD_ASSERT ((htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE)
- || (h->dynindx <= 0xffff));
+ BFD_ASSERT (stub_size == stub_big_size || h->dynindx <= 0xffff);
/* Values up to 2^31 - 1 are allowed. Larger values would cause
sign extension at runtime in the stub, resulting in a negative
return FALSE;
/* Fill the stub. */
- idx = 0;
- bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx);
- idx += 4;
- bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), stub + idx);
- idx += 4;
- if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE)
- {
- bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff),
- stub + idx);
- idx += 4;
- }
- bfd_put_32 (output_bfd, STUB_JALR, stub + idx);
- idx += 4;
-
- /* If a large stub is not required and sign extension is not a
- problem, then use legacy code in the stub. */
- if (htab->function_stub_size == MIPS_FUNCTION_STUB_BIG_SIZE)
- bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff), stub + idx);
- else if (h->dynindx & ~0x7fff)
- bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff), stub + idx);
+ if (micromips_p)
+ {
+ idx = 0;
+ bfd_put_micromips_32 (output_bfd, STUB_LW_MICROMIPS (output_bfd),
+ stub + idx);
+ idx += 4;
+ if (htab->insn32)
+ {
+ bfd_put_micromips_32 (output_bfd,
+ STUB_MOVE32_MICROMIPS (output_bfd),
+ stub + idx);
+ idx += 4;
+ }
+ else
+ {
+ bfd_put_16 (output_bfd, STUB_MOVE_MICROMIPS, stub + idx);
+ idx += 2;
+ }
+ if (stub_size == stub_big_size)
+ {
+ long dynindx_hi = (h->dynindx >> 16) & 0x7fff;
+
+ bfd_put_micromips_32 (output_bfd,
+ STUB_LUI_MICROMIPS (dynindx_hi),
+ stub + idx);
+ idx += 4;
+ }
+ if (htab->insn32)
+ {
+ bfd_put_micromips_32 (output_bfd, STUB_JALR32_MICROMIPS,
+ stub + idx);
+ idx += 4;
+ }
+ else
+ {
+ bfd_put_16 (output_bfd, STUB_JALR_MICROMIPS, stub + idx);
+ idx += 2;
+ }
+
+ /* If a large stub is not required and sign extension is not a
+ problem, then use legacy code in the stub. */
+ if (stub_size == stub_big_size)
+ bfd_put_micromips_32 (output_bfd,
+ STUB_ORI_MICROMIPS (h->dynindx & 0xffff),
+ stub + idx);
+ else if (h->dynindx & ~0x7fff)
+ bfd_put_micromips_32 (output_bfd,
+ STUB_LI16U_MICROMIPS (h->dynindx & 0xffff),
+ stub + idx);
+ else
+ bfd_put_micromips_32 (output_bfd,
+ STUB_LI16S_MICROMIPS (output_bfd,
+ h->dynindx),
+ stub + idx);
+ }
else
- bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx),
- stub + idx);
+ {
+ idx = 0;
+ bfd_put_32 (output_bfd, STUB_LW (output_bfd), stub + idx);
+ idx += 4;
+ bfd_put_32 (output_bfd, STUB_MOVE (output_bfd), stub + idx);
+ idx += 4;
+ if (stub_size == stub_big_size)
+ {
+ bfd_put_32 (output_bfd, STUB_LUI ((h->dynindx >> 16) & 0x7fff),
+ stub + idx);
+ idx += 4;
+ }
+ bfd_put_32 (output_bfd, STUB_JALR, stub + idx);
+ idx += 4;
+
+ /* If a large stub is not required and sign extension is not a
+ problem, then use legacy code in the stub. */
+ if (stub_size == stub_big_size)
+ bfd_put_32 (output_bfd, STUB_ORI (h->dynindx & 0xffff),
+ stub + idx);
+ else if (h->dynindx & ~0x7fff)
+ bfd_put_32 (output_bfd, STUB_LI16U (h->dynindx & 0xffff),
+ stub + idx);
+ else
+ bfd_put_32 (output_bfd, STUB_LI16S (output_bfd, h->dynindx),
+ stub + idx);
+ }
- BFD_ASSERT (h->plt.offset <= htab->sstubs->size);
- memcpy (htab->sstubs->contents + h->plt.offset,
- stub, htab->function_stub_size);
+ BFD_ASSERT (h->plt.plist->stub_offset <= htab->sstubs->size);
+ memcpy (htab->sstubs->contents + h->plt.plist->stub_offset,
+ stub, stub_size);
- /* Mark the symbol as undefined. plt.offset != -1 occurs
+ /* Mark the symbol as undefined. stub_offset != -1 occurs
only for the referenced symbol. */
sym->st_shndx = SHN_UNDEF;
to its stub address when unlinking a shared object. */
sym->st_value = (htab->sstubs->output_section->vma
+ htab->sstubs->output_offset
- + h->plt.offset);
+ + h->plt.plist->stub_offset
+ + isa_bit);
+ sym->st_other = other;
}
/* If we have a MIPS16 function with a stub, the dynamic symbol must
e.abfd = output_bfd;
e.symndx = -1;
e.d.h = hmips;
- e.tls_type = 0;
+ e.tls_type = GOT_TLS_NONE;
for (g = g->next; g->next != gg; g = g->next)
{
if (IRIX_COMPAT (output_bfd) == ict_irix6)
mips_elf_irix6_finish_dynamic_symbol (output_bfd, name, sym);
- /* Keep dynamic MIPS16 symbols odd. This allows the dynamic linker to
- treat MIPS16 symbols like any other. */
+ /* Keep dynamic compressed symbols odd. This allows the dynamic linker
+ to treat compressed symbols like any other. */
if (ELF_ST_IS_MIPS16 (sym->st_other))
{
BFD_ASSERT (sym->st_value & 1);
sym->st_other -= STO_MIPS16;
}
+ else if (ELF_ST_IS_MICROMIPS (sym->st_other))
+ {
+ BFD_ASSERT (sym->st_value & 1);
+ sym->st_other -= STO_MICROMIPS;
+ }
return TRUE;
}
dynobj = elf_hash_table (info)->dynobj;
hmips = (struct mips_elf_link_hash_entry *) h;
- if (h->plt.offset != (bfd_vma) -1)
+ if (h->plt.plist != NULL && h->plt.plist->mips_offset != MINUS_ONE)
{
bfd_byte *loc;
- bfd_vma plt_address, plt_index, got_address, got_offset, branch_offset;
+ bfd_vma plt_address, got_address, got_offset, branch_offset;
Elf_Internal_Rela rel;
static const bfd_vma *plt_entry;
+ bfd_vma gotplt_index;
+ bfd_vma plt_offset;
+
+ plt_offset = htab->plt_header_size + h->plt.plist->mips_offset;
+ gotplt_index = h->plt.plist->gotplt_index;
BFD_ASSERT (h->dynindx != -1);
BFD_ASSERT (htab->splt != NULL);
- BFD_ASSERT (h->plt.offset <= htab->splt->size);
+ BFD_ASSERT (gotplt_index != MINUS_ONE);
+ BFD_ASSERT (plt_offset <= htab->splt->size);
/* Calculate the address of the .plt entry. */
plt_address = (htab->splt->output_section->vma
+ htab->splt->output_offset
- + h->plt.offset);
-
- /* Calculate the index of the entry. */
- plt_index = ((h->plt.offset - htab->plt_header_size)
- / htab->plt_entry_size);
+ + plt_offset);
/* Calculate the address of the .got.plt entry. */
got_address = (htab->sgotplt->output_section->vma
+ htab->sgotplt->output_offset
- + plt_index * 4);
+ + gotplt_index * MIPS_ELF_GOT_SIZE (output_bfd));
/* Calculate the offset of the .got.plt entry from
_GLOBAL_OFFSET_TABLE_. */
/* Calculate the offset for the branch at the start of the PLT
entry. The branch jumps to the beginning of .plt. */
- branch_offset = -(h->plt.offset / 4 + 1) & 0xffff;
+ branch_offset = -(plt_offset / 4 + 1) & 0xffff;
/* Fill in the initial value of the .got.plt entry. */
bfd_put_32 (output_bfd, plt_address,
- htab->sgotplt->contents + plt_index * 4);
+ (htab->sgotplt->contents
+ + gotplt_index * MIPS_ELF_GOT_SIZE (output_bfd)));
/* Find out where the .plt entry should go. */
- loc = htab->splt->contents + h->plt.offset;
+ loc = htab->splt->contents + plt_offset;
if (info->shared)
{
plt_entry = mips_vxworks_shared_plt_entry;
bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc);
- bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4);
+ bfd_put_32 (output_bfd, plt_entry[1] | gotplt_index, loc + 4);
}
else
{
got_address_low = got_address & 0xffff;
bfd_put_32 (output_bfd, plt_entry[0] | branch_offset, loc);
- bfd_put_32 (output_bfd, plt_entry[1] | plt_index, loc + 4);
+ bfd_put_32 (output_bfd, plt_entry[1] | gotplt_index, loc + 4);
bfd_put_32 (output_bfd, plt_entry[2] | got_address_high, loc + 8);
bfd_put_32 (output_bfd, plt_entry[3] | got_address_low, loc + 12);
bfd_put_32 (output_bfd, plt_entry[4], loc + 16);
bfd_put_32 (output_bfd, plt_entry[7], loc + 28);
loc = (htab->srelplt2->contents
- + (plt_index * 3 + 2) * sizeof (Elf32_External_Rela));
+ + (gotplt_index * 3 + 2) * sizeof (Elf32_External_Rela));
/* Emit a relocation for the .got.plt entry. */
rel.r_offset = got_address;
rel.r_info = ELF32_R_INFO (htab->root.hplt->indx, R_MIPS_32);
- rel.r_addend = h->plt.offset;
+ rel.r_addend = plt_offset;
bfd_elf32_swap_reloca_out (output_bfd, &rel, loc);
/* Emit a relocation for the lui of %hi(<.got.plt slot>). */
}
/* Emit an R_MIPS_JUMP_SLOT relocation against the .got.plt entry. */
- loc = htab->srelplt->contents + plt_index * sizeof (Elf32_External_Rela);
+ loc = (htab->srelplt->contents
+ + gotplt_index * sizeof (Elf32_External_Rela));
rel.r_offset = got_address;
rel.r_info = ELF32_R_INFO (h->dynindx, R_MIPS_JUMP_SLOT);
rel.r_addend = 0;
/* Write out a plt0 entry to the beginning of .plt. */
-static void
+static bfd_boolean
mips_finish_exec_plt (bfd *output_bfd, struct bfd_link_info *info)
{
bfd_byte *loc;
plt_entry = mips_n64_exec_plt0_entry;
else if (ABI_N32_P (output_bfd))
plt_entry = mips_n32_exec_plt0_entry;
- else
+ else if (!htab->plt_header_is_comp)
plt_entry = mips_o32_exec_plt0_entry;
+ else if (htab->insn32)
+ plt_entry = micromips_insn32_o32_exec_plt0_entry;
+ else
+ plt_entry = micromips_o32_exec_plt0_entry;
/* Calculate the value of .got.plt. */
gotplt_value = (htab->sgotplt->output_section->vma
/* Install the PLT header. */
loc = htab->splt->contents;
- bfd_put_32 (output_bfd, plt_entry[0] | gotplt_value_high, loc);
- bfd_put_32 (output_bfd, plt_entry[1] | gotplt_value_low, loc + 4);
- bfd_put_32 (output_bfd, plt_entry[2] | gotplt_value_low, loc + 8);
- bfd_put_32 (output_bfd, plt_entry[3], loc + 12);
- bfd_put_32 (output_bfd, plt_entry[4], loc + 16);
- bfd_put_32 (output_bfd, plt_entry[5], loc + 20);
- bfd_put_32 (output_bfd, plt_entry[6], loc + 24);
- bfd_put_32 (output_bfd, plt_entry[7], loc + 28);
-}
+ if (plt_entry == micromips_o32_exec_plt0_entry)
+ {
+ bfd_vma gotpc_offset;
+ bfd_vma loc_address;
+ size_t i;
-/* Install the PLT header for a VxWorks executable and finalize the
+ BFD_ASSERT (gotplt_value % 4 == 0);
+
+ loc_address = (htab->splt->output_section->vma
+ + htab->splt->output_offset);
+ gotpc_offset = gotplt_value - ((loc_address | 3) ^ 3);
+
+ /* ADDIUPC has a span of +/-16MB, check we're in range. */
+ if (gotpc_offset + 0x1000000 >= 0x2000000)
+ {
+ (*_bfd_error_handler)
+ (_("%B: `%A' offset of %ld from `%A' beyond the range of ADDIUPC"),
+ output_bfd,
+ htab->sgotplt->output_section,
+ htab->splt->output_section,
+ (long) gotpc_offset);
+ bfd_set_error (bfd_error_no_error);
+ return FALSE;
+ }
+ bfd_put_16 (output_bfd,
+ plt_entry[0] | ((gotpc_offset >> 18) & 0x7f), loc);
+ bfd_put_16 (output_bfd, (gotpc_offset >> 2) & 0xffff, loc + 2);
+ for (i = 2; i < ARRAY_SIZE (micromips_o32_exec_plt0_entry); i++)
+ bfd_put_16 (output_bfd, plt_entry[i], loc + (i * 2));
+ }
+ else if (plt_entry == micromips_insn32_o32_exec_plt0_entry)
+ {
+ size_t i;
+
+ bfd_put_16 (output_bfd, plt_entry[0], loc);
+ bfd_put_16 (output_bfd, gotplt_value_high, loc + 2);
+ bfd_put_16 (output_bfd, plt_entry[2], loc + 4);
+ bfd_put_16 (output_bfd, gotplt_value_low, loc + 6);
+ bfd_put_16 (output_bfd, plt_entry[4], loc + 8);
+ bfd_put_16 (output_bfd, gotplt_value_low, loc + 10);
+ for (i = 6; i < ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry); i++)
+ bfd_put_16 (output_bfd, plt_entry[i], loc + (i * 2));
+ }
+ else
+ {
+ bfd_put_32 (output_bfd, plt_entry[0] | gotplt_value_high, loc);
+ bfd_put_32 (output_bfd, plt_entry[1] | gotplt_value_low, loc + 4);
+ bfd_put_32 (output_bfd, plt_entry[2] | gotplt_value_low, loc + 8);
+ bfd_put_32 (output_bfd, plt_entry[3], loc + 12);
+ bfd_put_32 (output_bfd, plt_entry[4], loc + 16);
+ bfd_put_32 (output_bfd, plt_entry[5], loc + 20);
+ bfd_put_32 (output_bfd, plt_entry[6], loc + 24);
+ bfd_put_32 (output_bfd, plt_entry[7], loc + 28);
+ }
+
+ return TRUE;
+}
+
+/* Install the PLT header for a VxWorks executable and finalize the
contents of .rela.plt.unloaded. */
static void
if (! info->shared)
continue;
- while (got_index < g->assigned_gotno)
+ for (; got_index < g->local_gotno; got_index++)
{
+ if (got_index >= g->assigned_low_gotno
+ && got_index <= g->assigned_high_gotno)
+ continue;
+
rel[0].r_offset = rel[1].r_offset = rel[2].r_offset
- = got_index++ * MIPS_ELF_GOT_SIZE (output_bfd);
+ = got_index * MIPS_ELF_GOT_SIZE (output_bfd);
if (!(mips_elf_create_dynamic_relocation
(output_bfd, info, rel, NULL,
bfd_abs_section_ptr,
else
{
BFD_ASSERT (!info->shared);
- mips_finish_exec_plt (output_bfd, info);
+ if (!mips_finish_exec_plt (output_bfd, info))
+ return FALSE;
}
}
return TRUE;
break;
case bfd_mach_mips_loongson_3a:
- val = E_MIPS_ARCH_64 | E_MIPS_MACH_LS3A;
+ val = E_MIPS_ARCH_64R2 | E_MIPS_MACH_LS3A;
break;
case bfd_mach_mips_octeon:
break;
case bfd_mach_mipsisa32r2:
+ case bfd_mach_mipsisa32r3:
+ case bfd_mach_mipsisa32r5:
val = E_MIPS_ARCH_32R2;
break;
case bfd_mach_mipsisa64r2:
+ case bfd_mach_mipsisa64r3:
+ case bfd_mach_mipsisa64r5:
val = E_MIPS_ARCH_64R2;
break;
+
+ case bfd_mach_mipsisa32r6:
+ val = E_MIPS_ARCH_32R6;
+ break;
+
+ case bfd_mach_mipsisa64r6:
+ val = E_MIPS_ARCH_64R6;
+ break;
}
elf_elfheader (abfd)->e_flags &= ~(EF_MIPS_ARCH | EF_MIPS_MACH);
elf_elfheader (abfd)->e_flags |= val;
if (s && (s->flags & SEC_LOAD))
++ret;
+ /* See if we need a PT_MIPS_ABIFLAGS segment. */
+ if (bfd_get_section_by_name (abfd, ".MIPS.abiflags"))
+ ++ret;
+
/* See if we need a PT_MIPS_OPTIONS segment. */
if (IRIX_COMPAT (abfd) == ict_irix6
&& bfd_get_section_by_name (abfd,
s = bfd_get_section_by_name (abfd, ".reginfo");
if (s != NULL && (s->flags & SEC_LOAD) != 0)
{
- for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
+ for (m = elf_seg_map (abfd); m != NULL; m = m->next)
if (m->p_type == PT_MIPS_REGINFO)
break;
if (m == NULL)
m->sections[0] = s;
/* We want to put it after the PHDR and INTERP segments. */
- pm = &elf_tdata (abfd)->segment_map;
+ pm = &elf_seg_map (abfd);
+ while (*pm != NULL
+ && ((*pm)->p_type == PT_PHDR
+ || (*pm)->p_type == PT_INTERP))
+ pm = &(*pm)->next;
+
+ m->next = *pm;
+ *pm = m;
+ }
+ }
+
+ /* If there is a .MIPS.abiflags section, we need a PT_MIPS_ABIFLAGS
+ segment. */
+ s = bfd_get_section_by_name (abfd, ".MIPS.abiflags");
+ if (s != NULL && (s->flags & SEC_LOAD) != 0)
+ {
+ for (m = elf_seg_map (abfd); m != NULL; m = m->next)
+ if (m->p_type == PT_MIPS_ABIFLAGS)
+ break;
+ if (m == NULL)
+ {
+ amt = sizeof *m;
+ m = bfd_zalloc (abfd, amt);
+ if (m == NULL)
+ return FALSE;
+
+ m->p_type = PT_MIPS_ABIFLAGS;
+ m->count = 1;
+ m->sections[0] = s;
+
+ /* We want to put it after the PHDR and INTERP segments. */
+ pm = &elf_seg_map (abfd);
while (*pm != NULL
&& ((*pm)->p_type == PT_PHDR
|| (*pm)->p_type == PT_INTERP))
{
struct elf_segment_map *options_segment;
- pm = &elf_tdata (abfd)->segment_map;
+ pm = &elf_seg_map (abfd);
while (*pm != NULL
&& ((*pm)->p_type == PT_PHDR
|| (*pm)->p_type == PT_INTERP))
&& bfd_get_section_by_name (abfd, ".dynamic") != NULL
&& bfd_get_section_by_name (abfd, ".mdebug") != NULL)
{
- for (m = elf_tdata (abfd)->segment_map; m != NULL; m = m->next)
+ for (m = elf_seg_map (abfd); m != NULL; m = m->next)
if (m->p_type == PT_MIPS_RTPROC)
break;
if (m == NULL)
}
/* We want to put it after the DYNAMIC segment. */
- pm = &elf_tdata (abfd)->segment_map;
+ pm = &elf_seg_map (abfd);
while (*pm != NULL && (*pm)->p_type != PT_DYNAMIC)
pm = &(*pm)->next;
if (*pm != NULL)
/* On IRIX5, the PT_DYNAMIC segment includes the .dynamic,
.dynstr, .dynsym, and .hash sections, and everything in
between. */
- for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL;
+ for (pm = &elf_seg_map (abfd); *pm != NULL;
pm = &(*pm)->next)
if ((*pm)->p_type == PT_DYNAMIC)
break;
m = *pm;
- if (m != NULL && IRIX_COMPAT (abfd) == ict_none)
- {
- /* For a normal mips executable the permissions for the PT_DYNAMIC
- segment are read, write and execute. We do that here since
- the code in elf.c sets only the read permission. This matters
- sometimes for the dynamic linker. */
- if (bfd_get_section_by_name (abfd, ".dynamic") != NULL)
- {
- m->p_flags = PF_R | PF_W | PF_X;
- m->p_flags_valid = 1;
- }
- }
/* GNU/Linux binaries do not need the extended PT_DYNAMIC section.
glibc's dynamic linker has traditionally derived the number of
tags from the p_filesz field, and sometimes allocates stack
&& !SGI_COMPAT (abfd)
&& bfd_get_section_by_name (abfd, ".dynamic"))
{
- for (pm = &elf_tdata (abfd)->segment_map; *pm != NULL; pm = &(*pm)->next)
+ for (pm = &elf_seg_map (abfd); *pm != NULL; pm = &(*pm)->next)
if ((*pm)->p_type == PT_NULL)
break;
if (*pm == NULL)
return TRUE;
}
+
+/* Prevent .MIPS.abiflags from being discarded with --gc-sections. */
+
+bfd_boolean
+_bfd_mips_elf_gc_mark_extra_sections (struct bfd_link_info *info,
+ elf_gc_mark_hook_fn gc_mark_hook)
+{
+ bfd *sub;
+
+ _bfd_elf_gc_mark_extra_sections (info, gc_mark_hook);
+
+ for (sub = info->input_bfds; sub != NULL; sub = sub->link.next)
+ {
+ asection *o;
+
+ if (! is_mips_elf (sub))
+ continue;
+
+ for (o = sub->sections; o != NULL; o = o->next)
+ if (!o->gc_mark
+ && MIPS_ELF_ABIFLAGS_SECTION_NAME_P
+ (bfd_get_section_name (sub, o)))
+ {
+ if (!_bfd_elf_gc_mark (info, o, gc_mark_hook))
+ return FALSE;
+ }
+ }
+
+ return TRUE;
+}
\f
/* Copy data from a MIPS ELF indirect symbol to its direct symbol,
hiding the old indirect symbol. Process additional relocation
if (skip != 0)
{
mips_elf_section_data (o)->u.tdata = tdata;
+ if (o->rawsize == 0)
+ o->rawsize = o->size;
o->size -= skip * PDR_SIZE;
ret = TRUE;
}
};
bfd_boolean
-_bfd_mips_elf_find_nearest_line (bfd *abfd, asection *section,
- asymbol **symbols, bfd_vma offset,
+_bfd_mips_elf_find_nearest_line (bfd *abfd, asymbol **symbols,
+ asection *section, bfd_vma offset,
const char **filename_ptr,
const char **functionname_ptr,
- unsigned int *line_ptr)
+ unsigned int *line_ptr,
+ unsigned int *discriminator_ptr)
{
asection *msec;
- if (_bfd_dwarf1_find_nearest_line (abfd, section, symbols, offset,
+ if (_bfd_dwarf2_find_nearest_line (abfd, symbols, NULL, section, offset,
filename_ptr, functionname_ptr,
- line_ptr))
+ line_ptr, discriminator_ptr,
+ dwarf_debug_sections,
+ ABI_64_P (abfd) ? 8 : 0,
+ &elf_tdata (abfd)->dwarf2_find_line_info))
return TRUE;
- if (_bfd_dwarf2_find_nearest_line (abfd, dwarf_debug_sections,
- section, symbols, offset,
+ if (_bfd_dwarf1_find_nearest_line (abfd, symbols, section, offset,
filename_ptr, functionname_ptr,
- line_ptr, NULL, ABI_64_P (abfd) ? 8 : 0,
- &elf_tdata (abfd)->dwarf2_find_line_info))
+ line_ptr))
return TRUE;
msec = bfd_get_section_by_name (abfd, ".mdebug");
if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS)
msec->flags |= SEC_HAS_CONTENTS;
- fi = elf_tdata (abfd)->find_line_info;
+ fi = mips_elf_tdata (abfd)->find_line_info;
if (fi == NULL)
{
bfd_size_type external_fdr_size;
for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++)
(*swap->swap_fdr_in) (abfd, fraw_src, fdr_ptr);
- elf_tdata (abfd)->find_line_info = fi;
+ mips_elf_tdata (abfd)->find_line_info = fi;
/* Note that we don't bother to ever free this information.
find_nearest_line is either called all the time, as in
/* Fall back on the generic ELF find_nearest_line routine. */
- return _bfd_elf_find_nearest_line (abfd, section, symbols, offset,
+ return _bfd_elf_find_nearest_line (abfd, symbols, section, offset,
filename_ptr, functionname_ptr,
- line_ptr);
+ line_ptr, discriminator_ptr);
}
bfd_boolean
struct bfd_link_info *link_info,
bfd_boolean *again)
{
+ bfd_boolean insn32 = mips_elf_hash_table (link_info)->insn32;
Elf_Internal_Shdr *symtab_hdr;
Elf_Internal_Rela *internal_relocs;
Elf_Internal_Rela *irel, *irelend;
&& irel->r_offset + 5 < sec->size
&& ((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0
|| (fndopc = find_match (opcode, bz_rt_insns_32)) >= 0)
- && MATCH (bfd_get_16 (abfd, ptr + 4), nop_insn_16))
+ && ((!insn32
+ && (delcnt = MATCH (bfd_get_16 (abfd, ptr + 4),
+ nop_insn_16) ? 2 : 0))
+ || (irel->r_offset + 7 < sec->size
+ && (delcnt = MATCH (bfd_get_micromips_32 (abfd,
+ ptr + 4),
+ nop_insn_32) ? 4 : 0))))
{
unsigned long reg;
bfd_put_micromips_32 (abfd, opcode, ptr);
- /* Delete the 16-bit delay slot NOP: two bytes from
- irel->offset + 4. */
- delcnt = 2;
+ /* Delete the delay slot NOP: two or four bytes from
+ irel->offset + 4; delcnt has already been set above. */
deloff = 4;
}
/* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC10_S1. We need
to check the distance from the next instruction, so subtract 2. */
- else if (r_type == R_MICROMIPS_PC16_S1
+ else if (!insn32
+ && r_type == R_MICROMIPS_PC16_S1
&& IS_BITSIZE (pcrval - 2, 11)
&& find_match (opcode, b_insns_32) >= 0)
{
/* R_MICROMIPS_PC16_S1 relaxation to R_MICROMIPS_PC7_S1. We need
to check the distance from the next instruction, so subtract 2. */
- else if (r_type == R_MICROMIPS_PC16_S1
+ else if (!insn32
+ && r_type == R_MICROMIPS_PC16_S1
&& IS_BITSIZE (pcrval - 2, 8)
&& (((fndopc = find_match (opcode, bz_rs_insns_32)) >= 0
&& OP16_VALID_REG (OP32_SREG (opcode)))
}
/* R_MICROMIPS_26_S1 -- JAL to JALS relaxation for microMIPS targets. */
- else if (r_type == R_MICROMIPS_26_S1
+ else if (!insn32
+ && r_type == R_MICROMIPS_26_S1
&& target_is_micromips_code_p
&& irel->r_offset + 7 < sec->size
&& MATCH (opcode, jal_insn_32_bd32))
free (ret);
return NULL;
}
+ ret->root.init_plt_refcount.plist = NULL;
+ ret->root.init_plt_offset.plist = NULL;
return &ret->root.root;
}
{
mips_elf_hash_table (info)->use_plts_and_copy_relocs = TRUE;
}
+
+/* A function that the linker calls to select between all or only
+ 32-bit microMIPS instructions. */
+
+void
+_bfd_mips_elf_insn32 (struct bfd_link_info *info, bfd_boolean on)
+{
+ mips_elf_hash_table (info)->insn32 = on;
+}
\f
+/* Return the .MIPS.abiflags value representing each ISA Extension. */
+
+unsigned int
+bfd_mips_isa_ext (bfd *abfd)
+{
+ switch (bfd_get_mach (abfd))
+ {
+ case bfd_mach_mips3900:
+ return AFL_EXT_3900;
+ case bfd_mach_mips4010:
+ return AFL_EXT_4010;
+ case bfd_mach_mips4100:
+ return AFL_EXT_4100;
+ case bfd_mach_mips4111:
+ return AFL_EXT_4111;
+ case bfd_mach_mips4120:
+ return AFL_EXT_4120;
+ case bfd_mach_mips4650:
+ return AFL_EXT_4650;
+ case bfd_mach_mips5400:
+ return AFL_EXT_5400;
+ case bfd_mach_mips5500:
+ return AFL_EXT_5500;
+ case bfd_mach_mips5900:
+ return AFL_EXT_5900;
+ case bfd_mach_mips10000:
+ return AFL_EXT_10000;
+ case bfd_mach_mips_loongson_2e:
+ return AFL_EXT_LOONGSON_2E;
+ case bfd_mach_mips_loongson_2f:
+ return AFL_EXT_LOONGSON_2F;
+ case bfd_mach_mips_loongson_3a:
+ return AFL_EXT_LOONGSON_3A;
+ case bfd_mach_mips_sb1:
+ return AFL_EXT_SB1;
+ case bfd_mach_mips_octeon:
+ return AFL_EXT_OCTEON;
+ case bfd_mach_mips_octeonp:
+ return AFL_EXT_OCTEONP;
+ case bfd_mach_mips_octeon2:
+ return AFL_EXT_OCTEON2;
+ case bfd_mach_mips_xlr:
+ return AFL_EXT_XLR;
+ }
+ return 0;
+}
+
+/* Update the isa_level, isa_rev, isa_ext fields of abiflags. */
+
+static void
+update_mips_abiflags_isa (bfd *abfd, Elf_Internal_ABIFlags_v0 *abiflags)
+{
+ switch (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH)
+ {
+ case E_MIPS_ARCH_1:
+ abiflags->isa_level = 1;
+ abiflags->isa_rev = 0;
+ break;
+ case E_MIPS_ARCH_2:
+ abiflags->isa_level = 2;
+ abiflags->isa_rev = 0;
+ break;
+ case E_MIPS_ARCH_3:
+ abiflags->isa_level = 3;
+ abiflags->isa_rev = 0;
+ break;
+ case E_MIPS_ARCH_4:
+ abiflags->isa_level = 4;
+ abiflags->isa_rev = 0;
+ break;
+ case E_MIPS_ARCH_5:
+ abiflags->isa_level = 5;
+ abiflags->isa_rev = 0;
+ break;
+ case E_MIPS_ARCH_32:
+ abiflags->isa_level = 32;
+ abiflags->isa_rev = 1;
+ break;
+ case E_MIPS_ARCH_32R2:
+ abiflags->isa_level = 32;
+ /* Handle MIPS32r3 and MIPS32r5 which do not have a header flag. */
+ if (abiflags->isa_rev < 2)
+ abiflags->isa_rev = 2;
+ break;
+ case E_MIPS_ARCH_32R6:
+ abiflags->isa_level = 32;
+ abiflags->isa_rev = 6;
+ break;
+ case E_MIPS_ARCH_64:
+ abiflags->isa_level = 64;
+ abiflags->isa_rev = 1;
+ break;
+ case E_MIPS_ARCH_64R2:
+ /* Handle MIPS64r3 and MIPS64r5 which do not have a header flag. */
+ abiflags->isa_level = 64;
+ if (abiflags->isa_rev < 2)
+ abiflags->isa_rev = 2;
+ break;
+ case E_MIPS_ARCH_64R6:
+ abiflags->isa_level = 64;
+ abiflags->isa_rev = 6;
+ break;
+ default:
+ (*_bfd_error_handler)
+ (_("%B: Unknown architecture %s"),
+ abfd, bfd_printable_name (abfd));
+ }
+
+ abiflags->isa_ext = bfd_mips_isa_ext (abfd);
+}
+
+/* Return true if the given ELF header flags describe a 32-bit binary. */
+
+static bfd_boolean
+mips_32bit_flags_p (flagword flags)
+{
+ return ((flags & EF_MIPS_32BITMODE) != 0
+ || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32
+ || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32
+ || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1
+ || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2
+ || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32
+ || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2
+ || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6);
+}
+
+/* Infer the content of the ABI flags based on the elf header. */
+
+static void
+infer_mips_abiflags (bfd *abfd, Elf_Internal_ABIFlags_v0* abiflags)
+{
+ obj_attribute *in_attr;
+
+ memset (abiflags, 0, sizeof (Elf_Internal_ABIFlags_v0));
+ update_mips_abiflags_isa (abfd, abiflags);
+
+ if (mips_32bit_flags_p (elf_elfheader (abfd)->e_flags))
+ abiflags->gpr_size = AFL_REG_32;
+ else
+ abiflags->gpr_size = AFL_REG_64;
+
+ abiflags->cpr1_size = AFL_REG_NONE;
+
+ in_attr = elf_known_obj_attributes (abfd)[OBJ_ATTR_GNU];
+ abiflags->fp_abi = in_attr[Tag_GNU_MIPS_ABI_FP].i;
+
+ if (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_SINGLE
+ || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_XX
+ || (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_DOUBLE
+ && abiflags->gpr_size == AFL_REG_32))
+ abiflags->cpr1_size = AFL_REG_32;
+ else if (abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_DOUBLE
+ || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_64
+ || abiflags->fp_abi == Val_GNU_MIPS_ABI_FP_64A)
+ abiflags->cpr1_size = AFL_REG_64;
+
+ abiflags->cpr2_size = AFL_REG_NONE;
+
+ if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MDMX)
+ abiflags->ases |= AFL_ASE_MDMX;
+ if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_M16)
+ abiflags->ases |= AFL_ASE_MIPS16;
+ if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS)
+ abiflags->ases |= AFL_ASE_MICROMIPS;
+
+ if (abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_ANY
+ && abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_SOFT
+ && abiflags->fp_abi != Val_GNU_MIPS_ABI_FP_64A
+ && abiflags->isa_level >= 32
+ && abiflags->isa_ext != AFL_EXT_LOONGSON_3A)
+ abiflags->flags1 |= AFL_FLAGS1_ODDSPREG;
+}
+
/* We need to use a special link routine to handle the .reginfo and
the .mdebug sections. We need to merge all instances of these
sections together, not write them all out sequentially. */
asection *o;
struct bfd_link_order *p;
asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec;
- asection *rtproc_sec;
+ asection *rtproc_sec, *abiflags_sec;
Elf32_RegInfo reginfo;
struct ecoff_debug_info debug;
struct mips_htab_traverse_info hti;
/* Go through the sections and collect the .reginfo and .mdebug
information. */
+ abiflags_sec = NULL;
reginfo_sec = NULL;
mdebug_sec = NULL;
gptab_data_sec = NULL;
gptab_bss_sec = NULL;
for (o = abfd->sections; o != NULL; o = o->next)
{
+ if (strcmp (o->name, ".MIPS.abiflags") == 0)
+ {
+ /* We have found the .MIPS.abiflags section in the output file.
+ Look through all the link_orders comprising it and remove them.
+ The data is merged in _bfd_mips_elf_merge_private_bfd_data. */
+ for (p = o->map_head.link_order; p != NULL; p = p->next)
+ {
+ asection *input_section;
+
+ if (p->type != bfd_indirect_link_order)
+ {
+ if (p->type == bfd_data_link_order)
+ continue;
+ abort ();
+ }
+
+ input_section = p->u.indirect.section;
+
+ /* Hack: reset the SEC_HAS_CONTENTS flag so that
+ elf_link_input_bfd ignores this section. */
+ input_section->flags &= ~SEC_HAS_CONTENTS;
+ }
+
+ /* Size has been set in _bfd_mips_elf_always_size_sections. */
+ BFD_ASSERT(o->size == sizeof (Elf_External_ABIFlags_v0));
+
+ /* Skip this section later on (I don't think this currently
+ matters, but someday it might). */
+ o->map_head.link_order = NULL;
+
+ abiflags_sec = o;
+ }
+
if (strcmp (o->name, ".reginfo") == 0)
{
memset (®info, 0, sizeof reginfo);
/* Now write out the computed sections. */
+ if (abiflags_sec != NULL)
+ {
+ Elf_External_ABIFlags_v0 ext;
+ Elf_Internal_ABIFlags_v0 *abiflags;
+
+ abiflags = &mips_elf_tdata (abfd)->abiflags;
+
+ /* Set up the abiflags if no valid input sections were found. */
+ if (!mips_elf_tdata (abfd)->abiflags_valid)
+ {
+ infer_mips_abiflags (abfd, abiflags);
+ mips_elf_tdata (abfd)->abiflags_valid = TRUE;
+ }
+ bfd_mips_elf_swap_abiflags_v0_out (abfd, abiflags, &ext);
+ if (! bfd_set_section_contents (abfd, abiflags_sec, &ext, 0, sizeof ext))
+ return FALSE;
+ }
+
if (reginfo_sec != NULL)
{
Elf32_External_RegInfo ext;
\f
/* Structure for saying that BFD machine EXTENSION extends BASE. */
-struct mips_mach_extension {
+struct mips_mach_extension
+{
unsigned long extension, base;
};
/* An array describing how BFD machines relate to one another. The entries
are ordered topologically with MIPS I extensions listed last. */
-static const struct mips_mach_extension mips_mach_extensions[] = {
+static const struct mips_mach_extension mips_mach_extensions[] =
+{
/* MIPS64r2 extensions. */
{ bfd_mach_mips_octeon2, bfd_mach_mips_octeonp },
{ bfd_mach_mips_octeonp, bfd_mach_mips_octeon },
{ bfd_mach_mips_octeon, bfd_mach_mipsisa64r2 },
+ { bfd_mach_mips_loongson_3a, bfd_mach_mipsisa64r2 },
/* MIPS64 extensions. */
{ bfd_mach_mipsisa64r2, bfd_mach_mipsisa64 },
{ bfd_mach_mips_sb1, bfd_mach_mipsisa64 },
{ bfd_mach_mips_xlr, bfd_mach_mipsisa64 },
- { bfd_mach_mips_loongson_3a, bfd_mach_mipsisa64 },
/* MIPS V extensions. */
{ bfd_mach_mipsisa64, bfd_mach_mips5 },
}
-/* Return true if the given ELF header flags describe a 32-bit binary. */
-
-static bfd_boolean
-mips_32bit_flags_p (flagword flags)
-{
- return ((flags & EF_MIPS_32BITMODE) != 0
- || (flags & EF_MIPS_ABI) == E_MIPS_ABI_O32
- || (flags & EF_MIPS_ABI) == E_MIPS_ABI_EABI32
- || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_1
- || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_2
- || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32
- || (flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R2);
-}
-
-
/* Merge object attributes from IBFD into OBFD. Raise an error if
there are conflicting attributes. */
static bfd_boolean
obj_attribute *in_attr;
obj_attribute *out_attr;
bfd *abi_fp_bfd;
+ bfd *abi_msa_bfd;
abi_fp_bfd = mips_elf_tdata (obfd)->abi_fp_bfd;
in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
- if (!abi_fp_bfd && in_attr[Tag_GNU_MIPS_ABI_FP].i != 0)
+ if (!abi_fp_bfd && in_attr[Tag_GNU_MIPS_ABI_FP].i != Val_GNU_MIPS_ABI_FP_ANY)
mips_elf_tdata (obfd)->abi_fp_bfd = ibfd;
+ abi_msa_bfd = mips_elf_tdata (obfd)->abi_msa_bfd;
+ if (!abi_msa_bfd
+ && in_attr[Tag_GNU_MIPS_ABI_MSA].i != Val_GNU_MIPS_ABI_MSA_ANY)
+ mips_elf_tdata (obfd)->abi_msa_bfd = ibfd;
+
if (!elf_known_obj_attributes_proc (obfd)[0].i)
{
/* This is the first object. Copy the attributes. */
out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
if (in_attr[Tag_GNU_MIPS_ABI_FP].i != out_attr[Tag_GNU_MIPS_ABI_FP].i)
{
- out_attr[Tag_GNU_MIPS_ABI_FP].type = 1;
- if (out_attr[Tag_GNU_MIPS_ABI_FP].i == 0)
- out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i;
- else if (in_attr[Tag_GNU_MIPS_ABI_FP].i != 0)
- switch (out_attr[Tag_GNU_MIPS_ABI_FP].i)
- {
- case 1:
- switch (in_attr[Tag_GNU_MIPS_ABI_FP].i)
- {
- case 2:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd, "-mdouble-float", "-msingle-float");
- break;
-
- case 3:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float");
- break;
-
- case 4:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd,
- "-mdouble-float", "-mips32r2 -mfp64");
- break;
-
- default:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), "
- "%B uses unknown floating point ABI %d"),
- obfd, abi_fp_bfd, ibfd,
- "-mdouble-float", in_attr[Tag_GNU_MIPS_ABI_FP].i);
- break;
- }
- break;
-
- case 2:
- switch (in_attr[Tag_GNU_MIPS_ABI_FP].i)
- {
- case 1:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd, "-msingle-float", "-mdouble-float");
- break;
-
- case 3:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float");
- break;
-
- case 4:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd,
- "-msingle-float", "-mips32r2 -mfp64");
- break;
-
- default:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), "
- "%B uses unknown floating point ABI %d"),
- obfd, abi_fp_bfd, ibfd,
- "-msingle-float", in_attr[Tag_GNU_MIPS_ABI_FP].i);
- break;
- }
- break;
-
- case 3:
- switch (in_attr[Tag_GNU_MIPS_ABI_FP].i)
- {
- case 1:
- case 2:
- case 4:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd, "-msoft-float", "-mhard-float");
- break;
-
- default:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), "
- "%B uses unknown floating point ABI %d"),
- obfd, abi_fp_bfd, ibfd,
- "-msoft-float", in_attr[Tag_GNU_MIPS_ABI_FP].i);
- break;
- }
- break;
+ int out_fp, in_fp;
- case 4:
- switch (in_attr[Tag_GNU_MIPS_ABI_FP].i)
- {
- case 1:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd,
- "-mips32r2 -mfp64", "-mdouble-float");
- break;
-
- case 2:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd,
- "-mips32r2 -mfp64", "-msingle-float");
- break;
-
- case 3:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd, "-mhard-float", "-msoft-float");
- break;
+ out_fp = out_attr[Tag_GNU_MIPS_ABI_FP].i;
+ in_fp = in_attr[Tag_GNU_MIPS_ABI_FP].i;
+ out_attr[Tag_GNU_MIPS_ABI_FP].type = 1;
+ if (out_fp == Val_GNU_MIPS_ABI_FP_ANY)
+ out_attr[Tag_GNU_MIPS_ABI_FP].i = in_fp;
+ else if (out_fp == Val_GNU_MIPS_ABI_FP_XX
+ && (in_fp == Val_GNU_MIPS_ABI_FP_DOUBLE
+ || in_fp == Val_GNU_MIPS_ABI_FP_64
+ || in_fp == Val_GNU_MIPS_ABI_FP_64A))
+ {
+ mips_elf_tdata (obfd)->abi_fp_bfd = ibfd;
+ out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i;
+ }
+ else if (in_fp == Val_GNU_MIPS_ABI_FP_XX
+ && (out_fp == Val_GNU_MIPS_ABI_FP_DOUBLE
+ || out_fp == Val_GNU_MIPS_ABI_FP_64
+ || out_fp == Val_GNU_MIPS_ABI_FP_64A))
+ /* Keep the current setting. */;
+ else if (out_fp == Val_GNU_MIPS_ABI_FP_64A
+ && in_fp == Val_GNU_MIPS_ABI_FP_64)
+ {
+ mips_elf_tdata (obfd)->abi_fp_bfd = ibfd;
+ out_attr[Tag_GNU_MIPS_ABI_FP].i = in_attr[Tag_GNU_MIPS_ABI_FP].i;
+ }
+ else if (in_fp == Val_GNU_MIPS_ABI_FP_64A
+ && out_fp == Val_GNU_MIPS_ABI_FP_64)
+ /* Keep the current setting. */;
+ else if (in_fp != Val_GNU_MIPS_ABI_FP_ANY)
+ {
+ const char *out_string, *in_string;
+
+ out_string = _bfd_mips_fp_abi_string (out_fp);
+ in_string = _bfd_mips_fp_abi_string (in_fp);
+ /* First warn about cases involving unrecognised ABIs. */
+ if (!out_string && !in_string)
+ _bfd_error_handler
+ (_("Warning: %B uses unknown floating point ABI %d "
+ "(set by %B), %B uses unknown floating point ABI %d"),
+ obfd, abi_fp_bfd, ibfd, out_fp, in_fp);
+ else if (!out_string)
+ _bfd_error_handler
+ (_("Warning: %B uses unknown floating point ABI %d "
+ "(set by %B), %B uses %s"),
+ obfd, abi_fp_bfd, ibfd, out_fp, in_string);
+ else if (!in_string)
+ _bfd_error_handler
+ (_("Warning: %B uses %s (set by %B), "
+ "%B uses unknown floating point ABI %d"),
+ obfd, abi_fp_bfd, ibfd, out_string, in_fp);
+ else
+ {
+ /* If one of the bfds is soft-float, the other must be
+ hard-float. The exact choice of hard-float ABI isn't
+ really relevant to the error message. */
+ if (in_fp == Val_GNU_MIPS_ABI_FP_SOFT)
+ out_string = "-mhard-float";
+ else if (out_fp == Val_GNU_MIPS_ABI_FP_SOFT)
+ in_string = "-mhard-float";
+ _bfd_error_handler
+ (_("Warning: %B uses %s (set by %B), %B uses %s"),
+ obfd, abi_fp_bfd, ibfd, out_string, in_string);
+ }
+ }
+ }
- default:
- _bfd_error_handler
- (_("Warning: %B uses %s (set by %B), "
- "%B uses unknown floating point ABI %d"),
- obfd, abi_fp_bfd, ibfd,
- "-mips32r2 -mfp64", in_attr[Tag_GNU_MIPS_ABI_FP].i);
- break;
- }
+ /* Check for conflicting Tag_GNU_MIPS_ABI_MSA attributes and merge
+ non-conflicting ones. */
+ if (in_attr[Tag_GNU_MIPS_ABI_MSA].i != out_attr[Tag_GNU_MIPS_ABI_MSA].i)
+ {
+ out_attr[Tag_GNU_MIPS_ABI_MSA].type = 1;
+ if (out_attr[Tag_GNU_MIPS_ABI_MSA].i == Val_GNU_MIPS_ABI_MSA_ANY)
+ out_attr[Tag_GNU_MIPS_ABI_MSA].i = in_attr[Tag_GNU_MIPS_ABI_MSA].i;
+ else if (in_attr[Tag_GNU_MIPS_ABI_MSA].i != Val_GNU_MIPS_ABI_MSA_ANY)
+ switch (out_attr[Tag_GNU_MIPS_ABI_MSA].i)
+ {
+ case Val_GNU_MIPS_ABI_MSA_128:
+ _bfd_error_handler
+ (_("Warning: %B uses %s (set by %B), "
+ "%B uses unknown MSA ABI %d"),
+ obfd, abi_msa_bfd, ibfd,
+ "-mmsa", in_attr[Tag_GNU_MIPS_ABI_MSA].i);
break;
default:
- switch (in_attr[Tag_GNU_MIPS_ABI_FP].i)
+ switch (in_attr[Tag_GNU_MIPS_ABI_MSA].i)
{
- case 1:
- _bfd_error_handler
- (_("Warning: %B uses unknown floating point ABI %d "
- "(set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd,
- out_attr[Tag_GNU_MIPS_ABI_FP].i, "-mdouble-float");
- break;
-
- case 2:
- _bfd_error_handler
- (_("Warning: %B uses unknown floating point ABI %d "
- "(set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd,
- out_attr[Tag_GNU_MIPS_ABI_FP].i, "-msingle-float");
- break;
-
- case 3:
+ case Val_GNU_MIPS_ABI_MSA_128:
_bfd_error_handler
- (_("Warning: %B uses unknown floating point ABI %d "
+ (_("Warning: %B uses unknown MSA ABI %d "
"(set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd,
- out_attr[Tag_GNU_MIPS_ABI_FP].i, "-msoft-float");
- break;
-
- case 4:
- _bfd_error_handler
- (_("Warning: %B uses unknown floating point ABI %d "
- "(set by %B), %B uses %s"),
- obfd, abi_fp_bfd, ibfd,
- out_attr[Tag_GNU_MIPS_ABI_FP].i, "-mips32r2 -mfp64");
- break;
+ obfd, abi_msa_bfd, ibfd,
+ out_attr[Tag_GNU_MIPS_ABI_MSA].i, "-mmsa");
+ break;
default:
_bfd_error_handler
- (_("Warning: %B uses unknown floating point ABI %d "
- "(set by %B), %B uses unknown floating point ABI %d"),
- obfd, abi_fp_bfd, ibfd,
- out_attr[Tag_GNU_MIPS_ABI_FP].i,
- in_attr[Tag_GNU_MIPS_ABI_FP].i);
+ (_("Warning: %B uses unknown MSA ABI %d "
+ "(set by %B), %B uses unknown MSA ABI %d"),
+ obfd, abi_msa_bfd, ibfd,
+ out_attr[Tag_GNU_MIPS_ABI_MSA].i,
+ in_attr[Tag_GNU_MIPS_ABI_MSA].i);
break;
}
- break;
}
}
bfd_boolean ok;
bfd_boolean null_input_bfd = TRUE;
asection *sec;
+ obj_attribute *out_attr;
/* Check if we have the same endianness. */
if (! _bfd_generic_verify_endian_match (ibfd, obfd))
return FALSE;
}
+ /* Set up the FP ABI attribute from the abiflags if it is not already
+ set. */
+ if (mips_elf_tdata (ibfd)->abiflags_valid)
+ {
+ obj_attribute *in_attr = elf_known_obj_attributes (ibfd)[OBJ_ATTR_GNU];
+ if (in_attr[Tag_GNU_MIPS_ABI_FP].i == Val_GNU_MIPS_ABI_FP_ANY)
+ in_attr[Tag_GNU_MIPS_ABI_FP].i =
+ mips_elf_tdata (ibfd)->abiflags.fp_abi;
+ }
+
if (!mips_elf_merge_obj_attributes (ibfd, obfd))
return FALSE;
- new_flags = elf_elfheader (ibfd)->e_flags;
- elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER;
- old_flags = elf_elfheader (obfd)->e_flags;
+ /* Check to see if the input BFD actually contains any sections.
+ If not, its flags may not have been initialised either, but it cannot
+ actually cause any incompatibility. */
+ for (sec = ibfd->sections; sec != NULL; sec = sec->next)
+ {
+ /* Ignore synthetic sections and empty .text, .data and .bss sections
+ which are automatically generated by gas. Also ignore fake
+ (s)common sections, since merely defining a common symbol does
+ not affect compatibility. */
+ if ((sec->flags & SEC_IS_COMMON) == 0
+ && strcmp (sec->name, ".reginfo")
+ && strcmp (sec->name, ".mdebug")
+ && (sec->size != 0
+ || (strcmp (sec->name, ".text")
+ && strcmp (sec->name, ".data")
+ && strcmp (sec->name, ".bss"))))
+ {
+ null_input_bfd = FALSE;
+ break;
+ }
+ }
+ if (null_input_bfd)
+ return TRUE;
+
+ /* Populate abiflags using existing information. */
+ if (!mips_elf_tdata (ibfd)->abiflags_valid)
+ {
+ infer_mips_abiflags (ibfd, &mips_elf_tdata (ibfd)->abiflags);
+ mips_elf_tdata (ibfd)->abiflags_valid = TRUE;
+ }
+ else
+ {
+ Elf_Internal_ABIFlags_v0 abiflags;
+ Elf_Internal_ABIFlags_v0 in_abiflags;
+ infer_mips_abiflags (ibfd, &abiflags);
+ in_abiflags = mips_elf_tdata (ibfd)->abiflags;
+
+ /* It is not possible to infer the correct ISA revision
+ for R3 or R5 so drop down to R2 for the checks. */
+ if (in_abiflags.isa_rev == 3 || in_abiflags.isa_rev == 5)
+ in_abiflags.isa_rev = 2;
+
+ if (in_abiflags.isa_level != abiflags.isa_level
+ || in_abiflags.isa_rev != abiflags.isa_rev
+ || in_abiflags.isa_ext != abiflags.isa_ext)
+ (*_bfd_error_handler)
+ (_("%B: warning: Inconsistent ISA between e_flags and "
+ ".MIPS.abiflags"), ibfd);
+ if (abiflags.fp_abi != Val_GNU_MIPS_ABI_FP_ANY
+ && in_abiflags.fp_abi != abiflags.fp_abi)
+ (*_bfd_error_handler)
+ (_("%B: warning: Inconsistent FP ABI between e_flags and "
+ ".MIPS.abiflags"), ibfd);
+ if ((in_abiflags.ases & abiflags.ases) != abiflags.ases)
+ (*_bfd_error_handler)
+ (_("%B: warning: Inconsistent ASEs between e_flags and "
+ ".MIPS.abiflags"), ibfd);
+ if (in_abiflags.isa_ext != abiflags.isa_ext)
+ (*_bfd_error_handler)
+ (_("%B: warning: Inconsistent ISA extensions between e_flags and "
+ ".MIPS.abiflags"), ibfd);
+ if (in_abiflags.flags2 != 0)
+ (*_bfd_error_handler)
+ (_("%B: warning: Unexpected flag in the flags2 field of "
+ ".MIPS.abiflags (0x%lx)"), ibfd,
+ (unsigned long) in_abiflags.flags2);
+ }
+
+ if (!mips_elf_tdata (obfd)->abiflags_valid)
+ {
+ /* Copy input abiflags if output abiflags are not already valid. */
+ mips_elf_tdata (obfd)->abiflags = mips_elf_tdata (ibfd)->abiflags;
+ mips_elf_tdata (obfd)->abiflags_valid = TRUE;
+ }
if (! elf_flags_init (obfd))
{
elf_flags_init (obfd) = TRUE;
- elf_elfheader (obfd)->e_flags = new_flags;
+ elf_elfheader (obfd)->e_flags = elf_elfheader (ibfd)->e_flags;
elf_elfheader (obfd)->e_ident[EI_CLASS]
= elf_elfheader (ibfd)->e_ident[EI_CLASS];
if (! bfd_set_arch_mach (obfd, bfd_get_arch (ibfd),
bfd_get_mach (ibfd)))
return FALSE;
+
+ /* Update the ABI flags isa_level, isa_rev and isa_ext fields. */
+ update_mips_abiflags_isa (obfd, &mips_elf_tdata (obfd)->abiflags);
}
return TRUE;
}
+ /* Update the output abiflags fp_abi using the computed fp_abi. */
+ out_attr = elf_known_obj_attributes (obfd)[OBJ_ATTR_GNU];
+ mips_elf_tdata (obfd)->abiflags.fp_abi = out_attr[Tag_GNU_MIPS_ABI_FP].i;
+
+#define max(a,b) ((a) > (b) ? (a) : (b))
+ /* Merge abiflags. */
+ mips_elf_tdata (obfd)->abiflags.isa_rev
+ = max (mips_elf_tdata (obfd)->abiflags.isa_rev,
+ mips_elf_tdata (ibfd)->abiflags.isa_rev);
+ mips_elf_tdata (obfd)->abiflags.gpr_size
+ = max (mips_elf_tdata (obfd)->abiflags.gpr_size,
+ mips_elf_tdata (ibfd)->abiflags.gpr_size);
+ mips_elf_tdata (obfd)->abiflags.cpr1_size
+ = max (mips_elf_tdata (obfd)->abiflags.cpr1_size,
+ mips_elf_tdata (ibfd)->abiflags.cpr1_size);
+ mips_elf_tdata (obfd)->abiflags.cpr2_size
+ = max (mips_elf_tdata (obfd)->abiflags.cpr2_size,
+ mips_elf_tdata (ibfd)->abiflags.cpr2_size);
+#undef max
+ mips_elf_tdata (obfd)->abiflags.ases
+ |= mips_elf_tdata (ibfd)->abiflags.ases;
+ mips_elf_tdata (obfd)->abiflags.flags1
+ |= mips_elf_tdata (ibfd)->abiflags.flags1;
+
+ new_flags = elf_elfheader (ibfd)->e_flags;
+ elf_elfheader (obfd)->e_flags |= new_flags & EF_MIPS_NOREORDER;
+ old_flags = elf_elfheader (obfd)->e_flags;
+
/* Check flag compatibility. */
new_flags &= ~EF_MIPS_NOREORDER;
if (new_flags == old_flags)
return TRUE;
- /* Check to see if the input BFD actually contains any sections.
- If not, its flags may not have been initialised either, but it cannot
- actually cause any incompatibility. */
- for (sec = ibfd->sections; sec != NULL; sec = sec->next)
- {
- /* Ignore synthetic sections and empty .text, .data and .bss sections
- which are automatically generated by gas. Also ignore fake
- (s)common sections, since merely defining a common symbol does
- not affect compatibility. */
- if ((sec->flags & SEC_IS_COMMON) == 0
- && strcmp (sec->name, ".reginfo")
- && strcmp (sec->name, ".mdebug")
- && (sec->size != 0
- || (strcmp (sec->name, ".text")
- && strcmp (sec->name, ".data")
- && strcmp (sec->name, ".bss"))))
- {
- null_input_bfd = FALSE;
- break;
- }
- }
- if (null_input_bfd)
- return TRUE;
-
ok = TRUE;
if (((new_flags & (EF_MIPS_PIC | EF_MIPS_CPIC)) != 0)
elf_elfheader (obfd)->e_flags
|= new_flags & (EF_MIPS_ARCH | EF_MIPS_MACH | EF_MIPS_32BITMODE);
+ /* Update the ABI flags isa_level, isa_rev, isa_ext fields. */
+ update_mips_abiflags_isa (obfd, &mips_elf_tdata (obfd)->abiflags);
+
/* Copy across the ABI flags if OBFD doesn't use them
and if that was what caused us to treat IBFD as 32-bit. */
if ((old_flags & EF_MIPS_ABI) == 0
old_flags &= ~ EF_MIPS_ARCH_ASE;
}
+ /* Compare NaN encodings. */
+ if ((new_flags & EF_MIPS_NAN2008) != (old_flags & EF_MIPS_NAN2008))
+ {
+ _bfd_error_handler (_("%B: linking %s module with previous %s modules"),
+ ibfd,
+ (new_flags & EF_MIPS_NAN2008
+ ? "-mnan=2008" : "-mnan=legacy"),
+ (old_flags & EF_MIPS_NAN2008
+ ? "-mnan=2008" : "-mnan=legacy"));
+ ok = FALSE;
+ new_flags &= ~EF_MIPS_NAN2008;
+ old_flags &= ~EF_MIPS_NAN2008;
+ }
+
+ /* Compare FP64 state. */
+ if ((new_flags & EF_MIPS_FP64) != (old_flags & EF_MIPS_FP64))
+ {
+ _bfd_error_handler (_("%B: linking %s module with previous %s modules"),
+ ibfd,
+ (new_flags & EF_MIPS_FP64
+ ? "-mfp64" : "-mfp32"),
+ (old_flags & EF_MIPS_FP64
+ ? "-mfp64" : "-mfp32"));
+ ok = FALSE;
+ new_flags &= ~EF_MIPS_FP64;
+ old_flags &= ~EF_MIPS_FP64;
+ }
+
/* Warn about any other mismatches */
if (new_flags != old_flags)
{
}
}
+/* Return the meaning of Tag_GNU_MIPS_ABI_FP value FP, or null if
+ not known. */
+
+const char *
+_bfd_mips_fp_abi_string (int fp)
+{
+ switch (fp)
+ {
+ /* These strings aren't translated because they're simply
+ option lists. */
+ case Val_GNU_MIPS_ABI_FP_DOUBLE:
+ return "-mdouble-float";
+
+ case Val_GNU_MIPS_ABI_FP_SINGLE:
+ return "-msingle-float";
+
+ case Val_GNU_MIPS_ABI_FP_SOFT:
+ return "-msoft-float";
+
+ case Val_GNU_MIPS_ABI_FP_OLD_64:
+ return _("-mips32r2 -mfp64 (12 callee-saved)");
+
+ case Val_GNU_MIPS_ABI_FP_XX:
+ return "-mfpxx";
+
+ case Val_GNU_MIPS_ABI_FP_64:
+ return "-mgp32 -mfp64";
+
+ case Val_GNU_MIPS_ABI_FP_64A:
+ return "-mgp32 -mfp64 -mno-odd-spreg";
+
+ default:
+ return 0;
+ }
+}
+
+static void
+print_mips_ases (FILE *file, unsigned int mask)
+{
+ if (mask & AFL_ASE_DSP)
+ fputs ("\n\tDSP ASE", file);
+ if (mask & AFL_ASE_DSPR2)
+ fputs ("\n\tDSP R2 ASE", file);
+ if (mask & AFL_ASE_EVA)
+ fputs ("\n\tEnhanced VA Scheme", file);
+ if (mask & AFL_ASE_MCU)
+ fputs ("\n\tMCU (MicroController) ASE", file);
+ if (mask & AFL_ASE_MDMX)
+ fputs ("\n\tMDMX ASE", file);
+ if (mask & AFL_ASE_MIPS3D)
+ fputs ("\n\tMIPS-3D ASE", file);
+ if (mask & AFL_ASE_MT)
+ fputs ("\n\tMT ASE", file);
+ if (mask & AFL_ASE_SMARTMIPS)
+ fputs ("\n\tSmartMIPS ASE", file);
+ if (mask & AFL_ASE_VIRT)
+ fputs ("\n\tVZ ASE", file);
+ if (mask & AFL_ASE_MSA)
+ fputs ("\n\tMSA ASE", file);
+ if (mask & AFL_ASE_MIPS16)
+ fputs ("\n\tMIPS16 ASE", file);
+ if (mask & AFL_ASE_MICROMIPS)
+ fputs ("\n\tMICROMIPS ASE", file);
+ if (mask & AFL_ASE_XPA)
+ fputs ("\n\tXPA ASE", file);
+ if (mask == 0)
+ fprintf (file, "\n\t%s", _("None"));
+ else if ((mask & ~AFL_ASE_MASK) != 0)
+ fprintf (stdout, "\n\t%s (%x)", _("Unknown"), mask & ~AFL_ASE_MASK);
+}
+
+static void
+print_mips_isa_ext (FILE *file, unsigned int isa_ext)
+{
+ switch (isa_ext)
+ {
+ case 0:
+ fputs (_("None"), file);
+ break;
+ case AFL_EXT_XLR:
+ fputs ("RMI XLR", file);
+ break;
+ case AFL_EXT_OCTEON2:
+ fputs ("Cavium Networks Octeon2", file);
+ break;
+ case AFL_EXT_OCTEONP:
+ fputs ("Cavium Networks OcteonP", file);
+ break;
+ case AFL_EXT_LOONGSON_3A:
+ fputs ("Loongson 3A", file);
+ break;
+ case AFL_EXT_OCTEON:
+ fputs ("Cavium Networks Octeon", file);
+ break;
+ case AFL_EXT_5900:
+ fputs ("Toshiba R5900", file);
+ break;
+ case AFL_EXT_4650:
+ fputs ("MIPS R4650", file);
+ break;
+ case AFL_EXT_4010:
+ fputs ("LSI R4010", file);
+ break;
+ case AFL_EXT_4100:
+ fputs ("NEC VR4100", file);
+ break;
+ case AFL_EXT_3900:
+ fputs ("Toshiba R3900", file);
+ break;
+ case AFL_EXT_10000:
+ fputs ("MIPS R10000", file);
+ break;
+ case AFL_EXT_SB1:
+ fputs ("Broadcom SB-1", file);
+ break;
+ case AFL_EXT_4111:
+ fputs ("NEC VR4111/VR4181", file);
+ break;
+ case AFL_EXT_4120:
+ fputs ("NEC VR4120", file);
+ break;
+ case AFL_EXT_5400:
+ fputs ("NEC VR5400", file);
+ break;
+ case AFL_EXT_5500:
+ fputs ("NEC VR5500", file);
+ break;
+ case AFL_EXT_LOONGSON_2E:
+ fputs ("ST Microelectronics Loongson 2E", file);
+ break;
+ case AFL_EXT_LOONGSON_2F:
+ fputs ("ST Microelectronics Loongson 2F", file);
+ break;
+ default:
+ fprintf (file, "%s (%d)", _("Unknown"), isa_ext);
+ break;
+ }
+}
+
+static void
+print_mips_fp_abi_value (FILE *file, int val)
+{
+ switch (val)
+ {
+ case Val_GNU_MIPS_ABI_FP_ANY:
+ fprintf (file, _("Hard or soft float\n"));
+ break;
+ case Val_GNU_MIPS_ABI_FP_DOUBLE:
+ fprintf (file, _("Hard float (double precision)\n"));
+ break;
+ case Val_GNU_MIPS_ABI_FP_SINGLE:
+ fprintf (file, _("Hard float (single precision)\n"));
+ break;
+ case Val_GNU_MIPS_ABI_FP_SOFT:
+ fprintf (file, _("Soft float\n"));
+ break;
+ case Val_GNU_MIPS_ABI_FP_OLD_64:
+ fprintf (file, _("Hard float (MIPS32r2 64-bit FPU 12 callee-saved)\n"));
+ break;
+ case Val_GNU_MIPS_ABI_FP_XX:
+ fprintf (file, _("Hard float (32-bit CPU, Any FPU)\n"));
+ break;
+ case Val_GNU_MIPS_ABI_FP_64:
+ fprintf (file, _("Hard float (32-bit CPU, 64-bit FPU)\n"));
+ break;
+ case Val_GNU_MIPS_ABI_FP_64A:
+ fprintf (file, _("Hard float compat (32-bit CPU, 64-bit FPU)\n"));
+ break;
+ default:
+ fprintf (file, "??? (%d)\n", val);
+ break;
+ }
+}
+
+static int
+get_mips_reg_size (int reg_size)
+{
+ return (reg_size == AFL_REG_NONE) ? 0
+ : (reg_size == AFL_REG_32) ? 32
+ : (reg_size == AFL_REG_64) ? 64
+ : (reg_size == AFL_REG_128) ? 128
+ : -1;
+}
+
bfd_boolean
_bfd_mips_elf_print_private_bfd_data (bfd *abfd, void *ptr)
{
fprintf (file, " [mips32r2]");
else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R2)
fprintf (file, " [mips64r2]");
+ else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_32R6)
+ fprintf (file, " [mips32r6]");
+ else if ((elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH) == E_MIPS_ARCH_64R6)
+ fprintf (file, " [mips64r6]");
else
fprintf (file, _(" [unknown ISA]"));
if (elf_elfheader (abfd)->e_flags & EF_MIPS_ARCH_ASE_MICROMIPS)
fprintf (file, " [micromips]");
+ if (elf_elfheader (abfd)->e_flags & EF_MIPS_NAN2008)
+ fprintf (file, " [nan2008]");
+
+ if (elf_elfheader (abfd)->e_flags & EF_MIPS_FP64)
+ fprintf (file, " [old fp64]");
+
if (elf_elfheader (abfd)->e_flags & EF_MIPS_32BITMODE)
fprintf (file, " [32bitmode]");
else
fputc ('\n', file);
+ if (mips_elf_tdata (abfd)->abiflags_valid)
+ {
+ Elf_Internal_ABIFlags_v0 *abiflags = &mips_elf_tdata (abfd)->abiflags;
+ fprintf (file, "\nMIPS ABI Flags Version: %d\n", abiflags->version);
+ fprintf (file, "\nISA: MIPS%d", abiflags->isa_level);
+ if (abiflags->isa_rev > 1)
+ fprintf (file, "r%d", abiflags->isa_rev);
+ fprintf (file, "\nGPR size: %d",
+ get_mips_reg_size (abiflags->gpr_size));
+ fprintf (file, "\nCPR1 size: %d",
+ get_mips_reg_size (abiflags->cpr1_size));
+ fprintf (file, "\nCPR2 size: %d",
+ get_mips_reg_size (abiflags->cpr2_size));
+ fputs ("\nFP ABI: ", file);
+ print_mips_fp_abi_value (file, abiflags->fp_abi);
+ fputs ("ISA Extension: ", file);
+ print_mips_isa_ext (file, abiflags->isa_ext);
+ fputs ("\nASEs:", file);
+ print_mips_ases (file, abiflags->ases);
+ fprintf (file, "\nFLAGS 1: %8.8lx", abiflags->flags1);
+ fprintf (file, "\nFLAGS 2: %8.8lx", abiflags->flags2);
+ fputc ('\n', file);
+ }
+
return TRUE;
}
+ i * 4 * ARRAY_SIZE (mips_exec_plt_entry));
}
+/* Build a table of synthetic symbols to represent the PLT. As with MIPS16
+ and microMIPS PLT slots we may have a many-to-one mapping between .plt
+ and .got.plt and also the slots may be of a different size each we walk
+ the PLT manually fetching instructions and matching them against known
+ patterns. To make things easier standard MIPS slots, if any, always come
+ first. As we don't create proper ELF symbols we use the UDATA.I member
+ of ASYMBOL to carry ISA annotation. The encoding used is the same as
+ with the ST_OTHER member of the ELF symbol. */
+
+long
+_bfd_mips_elf_get_synthetic_symtab (bfd *abfd,
+ long symcount ATTRIBUTE_UNUSED,
+ asymbol **syms ATTRIBUTE_UNUSED,
+ long dynsymcount, asymbol **dynsyms,
+ asymbol **ret)
+{
+ static const char pltname[] = "_PROCEDURE_LINKAGE_TABLE_";
+ static const char microsuffix[] = "@micromipsplt";
+ static const char m16suffix[] = "@mips16plt";
+ static const char mipssuffix[] = "@plt";
+
+ bfd_boolean (*slurp_relocs) (bfd *, asection *, asymbol **, bfd_boolean);
+ const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+ bfd_boolean micromips_p = MICROMIPS_P (abfd);
+ Elf_Internal_Shdr *hdr;
+ bfd_byte *plt_data;
+ bfd_vma plt_offset;
+ unsigned int other;
+ bfd_vma entry_size;
+ bfd_vma plt0_size;
+ asection *relplt;
+ bfd_vma opcode;
+ asection *plt;
+ asymbol *send;
+ size_t size;
+ char *names;
+ long counti;
+ arelent *p;
+ asymbol *s;
+ char *nend;
+ long count;
+ long pi;
+ long i;
+ long n;
+
+ *ret = NULL;
+
+ if ((abfd->flags & (DYNAMIC | EXEC_P)) == 0 || dynsymcount <= 0)
+ return 0;
+
+ relplt = bfd_get_section_by_name (abfd, ".rel.plt");
+ if (relplt == NULL)
+ return 0;
+
+ hdr = &elf_section_data (relplt)->this_hdr;
+ if (hdr->sh_link != elf_dynsymtab (abfd) || hdr->sh_type != SHT_REL)
+ return 0;
+
+ plt = bfd_get_section_by_name (abfd, ".plt");
+ if (plt == NULL)
+ return 0;
+
+ slurp_relocs = get_elf_backend_data (abfd)->s->slurp_reloc_table;
+ if (!(*slurp_relocs) (abfd, relplt, dynsyms, TRUE))
+ return -1;
+ p = relplt->relocation;
+
+ /* Calculating the exact amount of space required for symbols would
+ require two passes over the PLT, so just pessimise assuming two
+ PLT slots per relocation. */
+ count = relplt->size / hdr->sh_entsize;
+ counti = count * bed->s->int_rels_per_ext_rel;
+ size = 2 * count * sizeof (asymbol);
+ size += count * (sizeof (mipssuffix) +
+ (micromips_p ? sizeof (microsuffix) : sizeof (m16suffix)));
+ for (pi = 0; pi < counti; pi += bed->s->int_rels_per_ext_rel)
+ size += 2 * strlen ((*p[pi].sym_ptr_ptr)->name);
+
+ /* Add the size of "_PROCEDURE_LINKAGE_TABLE_" too. */
+ size += sizeof (asymbol) + sizeof (pltname);
+
+ if (!bfd_malloc_and_get_section (abfd, plt, &plt_data))
+ return -1;
+
+ if (plt->size < 16)
+ return -1;
+
+ s = *ret = bfd_malloc (size);
+ if (s == NULL)
+ return -1;
+ send = s + 2 * count + 1;
+
+ names = (char *) send;
+ nend = (char *) s + size;
+ n = 0;
+
+ opcode = bfd_get_micromips_32 (abfd, plt_data + 12);
+ if (opcode == 0x3302fffe)
+ {
+ if (!micromips_p)
+ return -1;
+ plt0_size = 2 * ARRAY_SIZE (micromips_o32_exec_plt0_entry);
+ other = STO_MICROMIPS;
+ }
+ else if (opcode == 0x0398c1d0)
+ {
+ if (!micromips_p)
+ return -1;
+ plt0_size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt0_entry);
+ other = STO_MICROMIPS;
+ }
+ else
+ {
+ plt0_size = 4 * ARRAY_SIZE (mips_o32_exec_plt0_entry);
+ other = 0;
+ }
+
+ s->the_bfd = abfd;
+ s->flags = BSF_SYNTHETIC | BSF_FUNCTION | BSF_LOCAL;
+ s->section = plt;
+ s->value = 0;
+ s->name = names;
+ s->udata.i = other;
+ memcpy (names, pltname, sizeof (pltname));
+ names += sizeof (pltname);
+ ++s, ++n;
+
+ pi = 0;
+ for (plt_offset = plt0_size;
+ plt_offset + 8 <= plt->size && s < send;
+ plt_offset += entry_size)
+ {
+ bfd_vma gotplt_addr;
+ const char *suffix;
+ bfd_vma gotplt_hi;
+ bfd_vma gotplt_lo;
+ size_t suffixlen;
+
+ opcode = bfd_get_micromips_32 (abfd, plt_data + plt_offset + 4);
+
+ /* Check if the second word matches the expected MIPS16 instruction. */
+ if (opcode == 0x651aeb00)
+ {
+ if (micromips_p)
+ return -1;
+ /* Truncated table??? */
+ if (plt_offset + 16 > plt->size)
+ break;
+ gotplt_addr = bfd_get_32 (abfd, plt_data + plt_offset + 12);
+ entry_size = 2 * ARRAY_SIZE (mips16_o32_exec_plt_entry);
+ suffixlen = sizeof (m16suffix);
+ suffix = m16suffix;
+ other = STO_MIPS16;
+ }
+ /* Likewise the expected microMIPS instruction (no insn32 mode). */
+ else if (opcode == 0xff220000)
+ {
+ if (!micromips_p)
+ return -1;
+ gotplt_hi = bfd_get_16 (abfd, plt_data + plt_offset) & 0x7f;
+ gotplt_lo = bfd_get_16 (abfd, plt_data + plt_offset + 2) & 0xffff;
+ gotplt_hi = ((gotplt_hi ^ 0x40) - 0x40) << 18;
+ gotplt_lo <<= 2;
+ gotplt_addr = gotplt_hi + gotplt_lo;
+ gotplt_addr += ((plt->vma + plt_offset) | 3) ^ 3;
+ entry_size = 2 * ARRAY_SIZE (micromips_o32_exec_plt_entry);
+ suffixlen = sizeof (microsuffix);
+ suffix = microsuffix;
+ other = STO_MICROMIPS;
+ }
+ /* Likewise the expected microMIPS instruction (insn32 mode). */
+ else if ((opcode & 0xffff0000) == 0xff2f0000)
+ {
+ gotplt_hi = bfd_get_16 (abfd, plt_data + plt_offset + 2) & 0xffff;
+ gotplt_lo = bfd_get_16 (abfd, plt_data + plt_offset + 6) & 0xffff;
+ gotplt_hi = ((gotplt_hi ^ 0x8000) - 0x8000) << 16;
+ gotplt_lo = (gotplt_lo ^ 0x8000) - 0x8000;
+ gotplt_addr = gotplt_hi + gotplt_lo;
+ entry_size = 2 * ARRAY_SIZE (micromips_insn32_o32_exec_plt_entry);
+ suffixlen = sizeof (microsuffix);
+ suffix = microsuffix;
+ other = STO_MICROMIPS;
+ }
+ /* Otherwise assume standard MIPS code. */
+ else
+ {
+ gotplt_hi = bfd_get_32 (abfd, plt_data + plt_offset) & 0xffff;
+ gotplt_lo = bfd_get_32 (abfd, plt_data + plt_offset + 4) & 0xffff;
+ gotplt_hi = ((gotplt_hi ^ 0x8000) - 0x8000) << 16;
+ gotplt_lo = (gotplt_lo ^ 0x8000) - 0x8000;
+ gotplt_addr = gotplt_hi + gotplt_lo;
+ entry_size = 4 * ARRAY_SIZE (mips_exec_plt_entry);
+ suffixlen = sizeof (mipssuffix);
+ suffix = mipssuffix;
+ other = 0;
+ }
+ /* Truncated table??? */
+ if (plt_offset + entry_size > plt->size)
+ break;
+
+ for (i = 0;
+ i < count && p[pi].address != gotplt_addr;
+ i++, pi = (pi + bed->s->int_rels_per_ext_rel) % counti);
+
+ if (i < count)
+ {
+ size_t namelen;
+ size_t len;
+
+ *s = **p[pi].sym_ptr_ptr;
+ /* Undefined syms won't have BSF_LOCAL or BSF_GLOBAL set. Since
+ we are defining a symbol, ensure one of them is set. */
+ if ((s->flags & BSF_LOCAL) == 0)
+ s->flags |= BSF_GLOBAL;
+ s->flags |= BSF_SYNTHETIC;
+ s->section = plt;
+ s->value = plt_offset;
+ s->name = names;
+ s->udata.i = other;
+
+ len = strlen ((*p[pi].sym_ptr_ptr)->name);
+ namelen = len + suffixlen;
+ if (names + namelen > nend)
+ break;
+
+ memcpy (names, (*p[pi].sym_ptr_ptr)->name, len);
+ names += len;
+ memcpy (names, suffix, suffixlen);
+ names += suffixlen;
+
+ ++s, ++n;
+ pi = (pi + bed->s->int_rels_per_ext_rel) % counti;
+ }
+ }
+
+ free (plt_data);
+
+ return n;
+}
+
void
_bfd_mips_post_process_headers (bfd *abfd, struct bfd_link_info *link_info)
{
if (htab->use_plts_and_copy_relocs && !htab->is_vxworks)
i_ehdrp->e_ident[EI_ABIVERSION] = 1;
}
+
+ _bfd_elf_post_process_headers (abfd, link_info);
+
+ if (mips_elf_tdata (abfd)->abiflags.fp_abi == Val_GNU_MIPS_ABI_FP_64
+ || mips_elf_tdata (abfd)->abiflags.fp_abi == Val_GNU_MIPS_ABI_FP_64A)
+ i_ehdrp->e_ident[EI_ABIVERSION] = 3;
}
projects / platform / upstream / binutils.git / blobdiff