[PATCH 1/6] RISC-V bfd port

Andrew Waterman palmer@dabbelt.com
Tue Oct 11 23:47:00 GMT 2016


---
 bfd/cpu-riscv.c     |   79 ++
 bfd/elfnn-riscv.c   | 3142 +++++++++++++++++++++++++++++++++++++++++++++++++++
 bfd/elfxx-riscv.c   |  814 +++++++++++++
 bfd/elfxx-riscv.h   |   33 +
 include/elf/riscv.h |   92 ++
 5 files changed, 4160 insertions(+)
 create mode 100644 bfd/cpu-riscv.c
 create mode 100644 bfd/elfnn-riscv.c
 create mode 100644 bfd/elfxx-riscv.c
 create mode 100644 bfd/elfxx-riscv.h
 create mode 100644 include/elf/riscv.h

diff --git a/bfd/cpu-riscv.c b/bfd/cpu-riscv.c
new file mode 100644
index 0000000..0a1c0e6
--- /dev/null
+++ b/bfd/cpu-riscv.c
@@ -0,0 +1,79 @@
+/* BFD backend for RISC-V
+   Copyright 2011-2015 Free Software Foundation, Inc.
+
+   Contributed by Andrew Waterman (andrew@sifive.com).
+   Based on MIPS target.
+
+   This file is part of BFD, the Binary File Descriptor library.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; see the file COPYING3. If not,
+   see <http://www.gnu.org/licenses/>.  */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+
+/* This routine is provided two arch_infos and returns an arch_info
+   that is compatible with both, or NULL if none exists.  */
+
+static const bfd_arch_info_type *
+riscv_compatible (const bfd_arch_info_type *a, const bfd_arch_info_type *b)
+{
+  if (a->arch != b->arch)
+    return NULL;
+
+  /* Machine compatibility is checked in
+     _bfd_riscv_elf_merge_private_bfd_data.  */
+
+  return a;
+}
+
+#define N(BITS_WORD, BITS_ADDR, NUMBER, PRINT, DEFAULT, NEXT)	\
+  {								\
+    BITS_WORD, /*  bits in a word */				\
+    BITS_ADDR, /* bits in an address */				\
+    8,	/* 8 bits in a byte */					\
+    bfd_arch_riscv,						\
+    NUMBER,							\
+    "riscv",							\
+    PRINT,							\
+    3,								\
+    DEFAULT,							\
+    riscv_compatible,						\
+    bfd_default_scan,						\
+    bfd_arch_default_fill,					\
+    NEXT,							\
+  }
+
+/* This enum must be kept in the same order as arch_info_struct.  */
+enum
+{
+  I_riscv64,
+  I_riscv32
+};
+
+#define NN(index) (&arch_info_struct[(index) + 1])
+
+/* This array must be kept in the same order as the anonymous enum above,
+   and each entry except the last should end with NN (my enum value).  */
+static const bfd_arch_info_type arch_info_struct[] =
+{
+  N (64, 64, bfd_mach_riscv64, "riscv:rv64", FALSE, NN (I_riscv64)),
+  N (32, 32, bfd_mach_riscv32, "riscv:rv32", FALSE, 0)
+};
+
+/* The default architecture is riscv:rv64.  */
+
+const bfd_arch_info_type bfd_riscv_arch =
+  N (64, 64, 0, "riscv", TRUE, &arch_info_struct[0]);
diff --git a/bfd/elfnn-riscv.c b/bfd/elfnn-riscv.c
new file mode 100644
index 0000000..47baa93
--- /dev/null
+++ b/bfd/elfnn-riscv.c
@@ -0,0 +1,3142 @@
+/* RISC-V-specific support for NN-bit ELF.
+   Copyright 2011-2015 Free Software Foundation, Inc.
+
+   Contributed by Andrew Waterman (andrew@sifive.com).
+   Based on TILE-Gx and MIPS targets.
+
+   This file is part of BFD, the Binary File Descriptor library.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; see the file COPYING3. If not,
+   see <http://www.gnu.org/licenses/>.  */
+
+/* This file handles RISC-V ELF targets.  */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "bfdlink.h"
+#include "genlink.h"
+#include "elf-bfd.h"
+#include "elfxx-riscv.h"
+#include "elf/riscv.h"
+#include "opcode/riscv.h"
+
+#define ARCH_SIZE NN
+
+#define MINUS_ONE ((bfd_vma)0 - 1)
+
+#define RISCV_ELF_LOG_WORD_BYTES (ARCH_SIZE == 32 ? 2 : 3)
+
+#define RISCV_ELF_WORD_BYTES (1 << RISCV_ELF_LOG_WORD_BYTES)
+
+/* The name of the dynamic interpreter.  This is put in the .interp
+   section.  */
+
+#define ELF64_DYNAMIC_INTERPRETER "/lib/ld.so.1"
+#define ELF32_DYNAMIC_INTERPRETER "/lib32/ld.so.1"
+
+#define ELF_ARCH			bfd_arch_riscv
+#define ELF_TARGET_ID			RISCV_ELF_DATA
+#define ELF_MACHINE_CODE		EM_RISCV
+#define ELF_MAXPAGESIZE			0x1000
+#define ELF_COMMONPAGESIZE		0x1000
+
+/* The RISC-V linker needs to keep track of the number of relocs that it
+   decides to copy as dynamic relocs in check_relocs for each symbol.
+   This is so that it can later discard them if they are found to be
+   unnecessary.  We store the information in a field extending the
+   regular ELF linker hash table.  */
+
+struct riscv_elf_dyn_relocs
+{
+  struct riscv_elf_dyn_relocs *next;
+
+  /* The input section of the reloc.  */
+  asection *sec;
+
+  /* Total number of relocs copied for the input section.  */
+  bfd_size_type count;
+
+  /* Number of pc-relative relocs copied for the input section.  */
+  bfd_size_type pc_count;
+};
+
+/* RISC-V ELF linker hash entry.  */
+
+struct riscv_elf_link_hash_entry
+{
+  struct elf_link_hash_entry elf;
+
+  /* Track dynamic relocs copied for this symbol.  */
+  struct riscv_elf_dyn_relocs *dyn_relocs;
+
+#define GOT_UNKNOWN     0
+#define GOT_NORMAL      1
+#define GOT_TLS_GD      2
+#define GOT_TLS_IE      4
+#define GOT_TLS_LE      8
+  char tls_type;
+};
+
+#define riscv_elf_hash_entry(ent) \
+  ((struct riscv_elf_link_hash_entry *)(ent))
+
+struct _bfd_riscv_elf_obj_tdata
+{
+  struct elf_obj_tdata root;
+
+  /* tls_type for each local got entry.  */
+  char *local_got_tls_type;
+};
+
+#define _bfd_riscv_elf_tdata(abfd) \
+  ((struct _bfd_riscv_elf_obj_tdata *) (abfd)->tdata.any)
+
+#define _bfd_riscv_elf_local_got_tls_type(abfd) \
+  (_bfd_riscv_elf_tdata (abfd)->local_got_tls_type)
+
+#define _bfd_riscv_elf_tls_type(abfd, h, symndx)		\
+  (*((h) != NULL ? &riscv_elf_hash_entry (h)->tls_type		\
+     : &_bfd_riscv_elf_local_got_tls_type (abfd) [symndx]))
+
+#define is_riscv_elf(bfd)				\
+  (bfd_get_flavour (bfd) == bfd_target_elf_flavour	\
+   && elf_tdata (bfd) != NULL				\
+   && elf_object_id (bfd) == RISCV_ELF_DATA)
+
+#include "elf/common.h"
+#include "elf/internal.h"
+
+struct riscv_elf_link_hash_table
+{
+  struct elf_link_hash_table elf;
+
+  /* Short-cuts to get to dynamic linker sections.  */
+  asection *sdynbss;
+  asection *srelbss;
+  asection *sdyntdata;
+
+  /* Small local sym to section mapping cache.  */
+  struct sym_cache sym_cache;
+};
+
+
+/* Get the RISC-V ELF linker hash table from a link_info structure.  */
+#define riscv_elf_hash_table(p) \
+  (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
+  == RISCV_ELF_DATA ? ((struct riscv_elf_link_hash_table *) ((p)->hash)) : NULL)
+
+static void
+riscv_info_to_howto_rela (bfd *abfd ATTRIBUTE_UNUSED,
+			  arelent *cache_ptr,
+			  Elf_Internal_Rela *dst)
+{
+  cache_ptr->howto = riscv_elf_rtype_to_howto (ELFNN_R_TYPE (dst->r_info));
+}
+
+static void
+riscv_elf_append_rela (bfd *abfd, asection *s, Elf_Internal_Rela *rel)
+{
+  const struct elf_backend_data *bed;
+  bfd_byte *loc;
+
+  bed = get_elf_backend_data (abfd);
+  loc = s->contents + (s->reloc_count++ * bed->s->sizeof_rela);
+  bed->s->swap_reloca_out (abfd, rel, loc);
+}
+
+/* PLT/GOT stuff */
+
+#define PLT_HEADER_INSNS 8
+#define PLT_ENTRY_INSNS 4
+#define PLT_HEADER_SIZE (PLT_HEADER_INSNS * 4)
+#define PLT_ENTRY_SIZE (PLT_ENTRY_INSNS * 4)
+
+#define GOT_ENTRY_SIZE RISCV_ELF_WORD_BYTES
+
+#define GOTPLT_HEADER_SIZE (2 * GOT_ENTRY_SIZE)
+
+#define sec_addr(sec) ((sec)->output_section->vma + (sec)->output_offset)
+
+static bfd_vma
+riscv_elf_got_plt_val (bfd_vma plt_index, struct bfd_link_info *info)
+{
+  return sec_addr (riscv_elf_hash_table (info)->elf.sgotplt)
+	 + GOTPLT_HEADER_SIZE + (plt_index * GOT_ENTRY_SIZE);
+}
+
+#if ARCH_SIZE == 32
+# define MATCH_LREG MATCH_LW
+#else
+# define MATCH_LREG MATCH_LD
+#endif
+
+/* Generate a PLT header.  */
+
+static void
+riscv_make_plt_header (bfd_vma gotplt_addr, bfd_vma addr, uint32_t *entry)
+{
+  bfd_vma gotplt_offset_high = RISCV_PCREL_HIGH_PART (gotplt_addr, addr);
+  bfd_vma gotplt_offset_low = RISCV_PCREL_LOW_PART (gotplt_addr, addr);
+
+  /* auipc  t2, %hi(.got.plt)
+     sub    t1, t1, t3               # shifted .got.plt offset + hdr size + 12
+     l[w|d] t3, %lo(.got.plt)(t2)    # _dl_runtime_resolve
+     addi   t1, t1, -(hdr size + 12) # shifted .got.plt offset
+     addi   t0, t2, %lo(.got.plt)    # &.got.plt
+     srli   t1, t1, log2(16/PTRSIZE) # .got.plt offset
+     l[w|d] t0, PTRSIZE(t0)          # link map
+     jr     t3 */
+
+  entry[0] = RISCV_UTYPE (AUIPC, X_T2, gotplt_offset_high);
+  entry[1] = RISCV_RTYPE (SUB, X_T1, X_T1, X_T3);
+  entry[2] = RISCV_ITYPE (LREG, X_T3, X_T2, gotplt_offset_low);
+  entry[3] = RISCV_ITYPE (ADDI, X_T1, X_T1, -(PLT_HEADER_SIZE + 12));
+  entry[4] = RISCV_ITYPE (ADDI, X_T0, X_T2, gotplt_offset_low);
+  entry[5] = RISCV_ITYPE (SRLI, X_T1, X_T1, 4 - RISCV_ELF_LOG_WORD_BYTES);
+  entry[6] = RISCV_ITYPE (LREG, X_T0, X_T0, RISCV_ELF_WORD_BYTES);
+  entry[7] = RISCV_ITYPE (JALR, 0, X_T3, 0);
+}
+
+/* Generate a PLT entry.  */
+
+static void
+riscv_make_plt_entry (bfd_vma got, bfd_vma addr, uint32_t *entry)
+{
+  /* auipc  t3, %hi(.got.plt entry)
+     l[w|d] t3, %lo(.got.plt entry)(t3)
+     jalr   t1, t3
+     nop */
+
+  entry[0] = RISCV_UTYPE (AUIPC, X_T3, RISCV_PCREL_HIGH_PART (got, addr));
+  entry[1] = RISCV_ITYPE (LREG,  X_T3, X_T3, RISCV_PCREL_LOW_PART(got, addr));
+  entry[2] = RISCV_ITYPE (JALR, X_T1, X_T3, 0);
+  entry[3] = RISCV_NOP;
+}
+
+/* Create an entry in an RISC-V ELF linker hash table.  */
+
+static struct bfd_hash_entry *
+link_hash_newfunc (struct bfd_hash_entry *entry,
+		   struct bfd_hash_table *table, const char *string)
+{
+  /* Allocate the structure if it has not already been allocated by a
+     subclass.  */
+  if (entry == NULL)
+    {
+      entry =
+	bfd_hash_allocate (table,
+			   sizeof (struct riscv_elf_link_hash_entry));
+      if (entry == NULL)
+	return entry;
+    }
+
+  /* Call the allocation method of the superclass.  */
+  entry = _bfd_elf_link_hash_newfunc (entry, table, string);
+  if (entry != NULL)
+    {
+      struct riscv_elf_link_hash_entry *eh;
+
+      eh = (struct riscv_elf_link_hash_entry *) entry;
+      eh->dyn_relocs = NULL;
+      eh->tls_type = GOT_UNKNOWN;
+    }
+
+  return entry;
+}
+
+/* Create a RISC-V ELF linker hash table.  */
+
+static struct bfd_link_hash_table *
+riscv_elf_link_hash_table_create (bfd *abfd)
+{
+  struct riscv_elf_link_hash_table *ret;
+  bfd_size_type amt = sizeof (struct riscv_elf_link_hash_table);
+
+  ret = (struct riscv_elf_link_hash_table *) bfd_zmalloc (amt);
+  if (ret == NULL)
+    return NULL;
+
+  if (!_bfd_elf_link_hash_table_init (&ret->elf, abfd, link_hash_newfunc,
+				      sizeof (struct riscv_elf_link_hash_entry),
+				      RISCV_ELF_DATA))
+    {
+      free (ret);
+      return NULL;
+    }
+
+  return &ret->elf.root;
+}
+
+/* Create the .got section.  */
+
+static bfd_boolean
+riscv_elf_create_got_section (bfd *abfd, struct bfd_link_info *info)
+{
+  flagword flags;
+  asection *s, *s_got;
+  struct elf_link_hash_entry *h;
+  const struct elf_backend_data *bed = get_elf_backend_data (abfd);
+  struct elf_link_hash_table *htab = elf_hash_table (info);
+
+  /* This function may be called more than once.  */
+  s = bfd_get_linker_section (abfd, ".got");
+  if (s != NULL)
+    return TRUE;
+
+  flags = bed->dynamic_sec_flags;
+
+  s = bfd_make_section_anyway_with_flags (abfd,
+					  (bed->rela_plts_and_copies_p
+					   ? ".rela.got" : ".rel.got"),
+					  (bed->dynamic_sec_flags
+					   | SEC_READONLY));
+  if (s == NULL
+      || ! bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
+    return FALSE;
+  htab->srelgot = s;
+
+  s = s_got = bfd_make_section_anyway_with_flags (abfd, ".got", flags);
+  if (s == NULL
+      || !bfd_set_section_alignment (abfd, s, bed->s->log_file_align))
+    return FALSE;
+  htab->sgot = s;
+
+  /* The first bit of the global offset table is the header.  */
+  s->size += bed->got_header_size;
+
+  if (bed->want_got_plt)
+    {
+      s = bfd_make_section_anyway_with_flags (abfd, ".got.plt", flags);
+      if (s == NULL
+	  || !bfd_set_section_alignment (abfd, s,
+					 bed->s->log_file_align))
+	return FALSE;
+      htab->sgotplt = s;
+
+      /* Reserve room for the header.  */
+      s->size += GOTPLT_HEADER_SIZE;
+    }
+
+  if (bed->want_got_sym)
+    {
+      /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the .got
+	 section.  We don't do this in the linker script because we don't want
+	 to define the symbol if we are not creating a global offset
+	 table.  */
+      h = _bfd_elf_define_linkage_sym (abfd, info, s_got,
+				       "_GLOBAL_OFFSET_TABLE_");
+      elf_hash_table (info)->hgot = h;
+      if (h == NULL)
+	return FALSE;
+    }
+
+  return TRUE;
+}
+
+/* Create .plt, .rela.plt, .got, .got.plt, .rela.got, .dynbss, and
+   .rela.bss sections in DYNOBJ, and set up shortcuts to them in our
+   hash table.  */
+
+static bfd_boolean
+riscv_elf_create_dynamic_sections (bfd *dynobj,
+				   struct bfd_link_info *info)
+{
+  struct riscv_elf_link_hash_table *htab;
+
+  htab = riscv_elf_hash_table (info);
+  BFD_ASSERT (htab != NULL);
+
+  if (!riscv_elf_create_got_section (dynobj, info))
+    return FALSE;
+
+  if (!_bfd_elf_create_dynamic_sections (dynobj, info))
+    return FALSE;
+
+  htab->sdynbss = bfd_get_linker_section (dynobj, ".dynbss");
+  if (!bfd_link_pic (info))
+    {
+      htab->srelbss = bfd_get_linker_section (dynobj, ".rela.bss");
+      htab->sdyntdata =
+	bfd_make_section_anyway_with_flags (dynobj, ".tdata.dyn",
+					    SEC_ALLOC | SEC_THREAD_LOCAL);
+    }
+
+  if (!htab->elf.splt || !htab->elf.srelplt || !htab->sdynbss
+      || (!bfd_link_pic (info) && (!htab->srelbss || !htab->sdyntdata)))
+    abort ();
+
+  return TRUE;
+}
+
+/* Copy the extra info we tack onto an elf_link_hash_entry.  */
+
+static void
+riscv_elf_copy_indirect_symbol (struct bfd_link_info *info,
+				struct elf_link_hash_entry *dir,
+				struct elf_link_hash_entry *ind)
+{
+  struct riscv_elf_link_hash_entry *edir, *eind;
+
+  edir = (struct riscv_elf_link_hash_entry *) dir;
+  eind = (struct riscv_elf_link_hash_entry *) ind;
+
+  if (eind->dyn_relocs != NULL)
+    {
+      if (edir->dyn_relocs != NULL)
+	{
+	  struct riscv_elf_dyn_relocs **pp;
+	  struct riscv_elf_dyn_relocs *p;
+
+	  /* Add reloc counts against the indirect sym to the direct sym
+	     list.  Merge any entries against the same section.  */
+	  for (pp = &eind->dyn_relocs; (p = *pp) != NULL; )
+	    {
+	      struct riscv_elf_dyn_relocs *q;
+
+	      for (q = edir->dyn_relocs; q != NULL; q = q->next)
+		if (q->sec == p->sec)
+		  {
+		    q->pc_count += p->pc_count;
+		    q->count += p->count;
+		    *pp = p->next;
+		    break;
+		  }
+	      if (q == NULL)
+		pp = &p->next;
+	    }
+	  *pp = edir->dyn_relocs;
+	}
+
+      edir->dyn_relocs = eind->dyn_relocs;
+      eind->dyn_relocs = NULL;
+    }
+
+  if (ind->root.type == bfd_link_hash_indirect
+      && dir->got.refcount <= 0)
+    {
+      edir->tls_type = eind->tls_type;
+      eind->tls_type = GOT_UNKNOWN;
+    }
+  _bfd_elf_link_hash_copy_indirect (info, dir, ind);
+}
+
+static bfd_boolean
+riscv_elf_record_tls_type (bfd *abfd, struct elf_link_hash_entry *h,
+			   unsigned long symndx, char tls_type)
+{
+  char *new_tls_type = &_bfd_riscv_elf_tls_type (abfd, h, symndx);
+  *new_tls_type |= tls_type;
+  if ((*new_tls_type & GOT_NORMAL) && (*new_tls_type & ~GOT_NORMAL))
+    {
+      (*_bfd_error_handler)
+	(_("%B: `%s' accessed both as normal and thread local symbol"),
+	 abfd, h ? h->root.root.string : "<local>");
+      return FALSE;
+    }
+  return TRUE;
+}
+
+static bfd_boolean
+riscv_elf_record_got_reference (bfd *abfd, struct bfd_link_info *info,
+				struct elf_link_hash_entry *h, long symndx)
+{
+  struct riscv_elf_link_hash_table *htab = riscv_elf_hash_table (info);
+  Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+
+  if (htab->elf.sgot == NULL)
+    {
+      if (!riscv_elf_create_got_section (htab->elf.dynobj, info))
+	return FALSE;
+    }
+
+  if (h != NULL)
+    {
+      h->got.refcount += 1;
+      return TRUE;
+    }
+
+  /* This is a global offset table entry for a local symbol.  */
+  if (elf_local_got_refcounts (abfd) == NULL)
+    {
+      bfd_size_type size = symtab_hdr->sh_info * (sizeof (bfd_vma) + 1);
+      if (!(elf_local_got_refcounts (abfd) = bfd_zalloc (abfd, size)))
+	return FALSE;
+      _bfd_riscv_elf_local_got_tls_type (abfd)
+	= (char *) (elf_local_got_refcounts (abfd) + symtab_hdr->sh_info);
+    }
+  elf_local_got_refcounts (abfd) [symndx] += 1;
+
+  return TRUE;
+}
+
+static bfd_boolean
+bad_static_reloc (bfd *abfd, unsigned r_type, struct elf_link_hash_entry *h)
+{
+  (*_bfd_error_handler)
+    (_("%B: relocation %s against `%s' can not be used when making a shared "
+       "object; recompile with -fPIC"),
+      abfd, riscv_elf_rtype_to_howto (r_type)->name,
+      h != NULL ? h->root.root.string : "a local symbol");
+  bfd_set_error (bfd_error_bad_value);
+  return FALSE;
+}
+/* Look through the relocs for a section during the first phase, and
+   allocate space in the global offset table or procedure linkage
+   table.  */
+
+static bfd_boolean
+riscv_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
+			asection *sec, const Elf_Internal_Rela *relocs)
+{
+  struct riscv_elf_link_hash_table *htab;
+  Elf_Internal_Shdr *symtab_hdr;
+  struct elf_link_hash_entry **sym_hashes;
+  const Elf_Internal_Rela *rel;
+  asection *sreloc = NULL;
+
+  if (bfd_link_relocatable (info))
+    return TRUE;
+
+  htab = riscv_elf_hash_table (info);
+  symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+  sym_hashes = elf_sym_hashes (abfd);
+
+  if (htab->elf.dynobj == NULL)
+    htab->elf.dynobj = abfd;
+
+  for (rel = relocs; rel < relocs + sec->reloc_count; rel++)
+    {
+      unsigned int r_type;
+      unsigned long r_symndx;
+      struct elf_link_hash_entry *h;
+
+      r_symndx = ELFNN_R_SYM (rel->r_info);
+      r_type = ELFNN_R_TYPE (rel->r_info);
+
+      if (r_symndx >= NUM_SHDR_ENTRIES (symtab_hdr))
+	{
+	  (*_bfd_error_handler) (_("%B: bad symbol index: %d"),
+				 abfd, r_symndx);
+	  return FALSE;
+	}
+
+      if (r_symndx < symtab_hdr->sh_info)
+	h = NULL;
+      else
+	{
+	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+	  while (h->root.type == bfd_link_hash_indirect
+		 || h->root.type == bfd_link_hash_warning)
+	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
+
+	  /* PR15323, ref flags aren't set for references in the same
+	     object.  */
+	  h->root.non_ir_ref = 1;
+	}
+
+      switch (r_type)
+	{
+	case R_RISCV_TLS_GD_HI20:
+	  if (!riscv_elf_record_got_reference (abfd, info, h, r_symndx)
+	      || !riscv_elf_record_tls_type (abfd, h, r_symndx, GOT_TLS_GD))
+	    return FALSE;
+	  break;
+
+	case R_RISCV_TLS_GOT_HI20:
+	  if (bfd_link_pic (info))
+	    info->flags |= DF_STATIC_TLS;
+	  if (!riscv_elf_record_got_reference (abfd, info, h, r_symndx)
+	      || !riscv_elf_record_tls_type (abfd, h, r_symndx, GOT_TLS_IE))
+	    return FALSE;
+	  break;
+
+	case R_RISCV_GOT_HI20:
+	  if (!riscv_elf_record_got_reference (abfd, info, h, r_symndx)
+	      || !riscv_elf_record_tls_type (abfd, h, r_symndx, GOT_NORMAL))
+	    return FALSE;
+	  break;
+
+	case R_RISCV_CALL_PLT:
+	  /* This symbol requires a procedure linkage table entry.  We
+	     actually build the entry in adjust_dynamic_symbol,
+	     because this might be a case of linking PIC code without
+	     linking in any dynamic objects, in which case we don't
+	     need to generate a procedure linkage table after all.  */
+
+	  if (h != NULL)
+	    {
+	      h->needs_plt = 1;
+	      h->plt.refcount += 1;
+	    }
+	  break;
+
+	case R_RISCV_CALL:
+	case R_RISCV_JAL:
+	case R_RISCV_BRANCH:
+	case R_RISCV_RVC_BRANCH:
+	case R_RISCV_RVC_JUMP:
+	case R_RISCV_PCREL_HI20:
+	  /* In shared libraries, these relocs are known to bind locally.  */
+	  if (bfd_link_pic (info))
+	    break;
+	  goto static_reloc;
+
+	case R_RISCV_TPREL_HI20:
+	  if (!bfd_link_executable (info))
+	    return bad_static_reloc (abfd, r_type, h);
+	  if (h != NULL)
+	    riscv_elf_record_tls_type (abfd, h, r_symndx, GOT_TLS_LE);
+	  goto static_reloc;
+
+	case R_RISCV_HI20:
+	  if (bfd_link_pic (info))
+	    return bad_static_reloc (abfd, r_type, h);
+	  /* Fall through.  */
+
+	case R_RISCV_COPY:
+	case R_RISCV_JUMP_SLOT:
+	case R_RISCV_RELATIVE:
+	case R_RISCV_64:
+	case R_RISCV_32:
+	  /* Fall through.  */
+
+	static_reloc:
+	  /* This reloc might not bind locally.  */
+	  if (h != NULL)
+	    h->non_got_ref = 1;
+
+	  if (h != NULL && !bfd_link_pic (info))
+	    {
+	      /* We may need a .plt entry if the function this reloc
+		 refers to is in a shared lib.  */
+	      h->plt.refcount += 1;
+	    }
+
+	  /* If we are creating a shared library, and this is a reloc
+	     against a global symbol, or a non PC relative reloc
+	     against a local symbol, then we need to copy the reloc
+	     into the shared library.  However, if we are linking with
+	     -Bsymbolic, we do not need to copy a reloc against a
+	     global symbol which is defined in an object we are
+	     including in the link (i.e., DEF_REGULAR is set).  At
+	     this point we have not seen all the input files, so it is
+	     possible that DEF_REGULAR is not set now but will be set
+	     later (it is never cleared).  In case of a weak definition,
+	     DEF_REGULAR may be cleared later by a strong definition in
+	     a shared library.  We account for that possibility below by
+	     storing information in the relocs_copied field of the hash
+	     table entry.  A similar situation occurs when creating
+	     shared libraries and symbol visibility changes render the
+	     symbol local.
+
+	     If on the other hand, we are creating an executable, we
+	     may need to keep relocations for symbols satisfied by a
+	     dynamic library if we manage to avoid copy relocs for the
+	     symbol.  */
+	  if ((bfd_link_pic (info)
+	       && (sec->flags & SEC_ALLOC) != 0
+	       && (! riscv_elf_rtype_to_howto (r_type)->pc_relative
+		   || (h != NULL
+		       && (! info->symbolic
+			   || h->root.type == bfd_link_hash_defweak
+			   || !h->def_regular))))
+	      || (!bfd_link_pic (info)
+		  && (sec->flags & SEC_ALLOC) != 0
+		  && h != NULL
+		  && (h->root.type == bfd_link_hash_defweak
+		      || !h->def_regular)))
+	    {
+	      struct riscv_elf_dyn_relocs *p;
+	      struct riscv_elf_dyn_relocs **head;
+
+	      /* When creating a shared object, we must copy these
+		 relocs into the output file.  We create a reloc
+		 section in dynobj and make room for the reloc.  */
+	      if (sreloc == NULL)
+		{
+		  sreloc = _bfd_elf_make_dynamic_reloc_section
+		    (sec, htab->elf.dynobj, RISCV_ELF_LOG_WORD_BYTES,
+		    abfd, /*rela?*/ TRUE);
+
+		  if (sreloc == NULL)
+		    return FALSE;
+		}
+
+	      /* If this is a global symbol, we count the number of
+		 relocations we need for this symbol.  */
+	      if (h != NULL)
+		head = &((struct riscv_elf_link_hash_entry *) h)->dyn_relocs;
+	      else
+		{
+		  /* Track dynamic relocs needed for local syms too.
+		     We really need local syms available to do this
+		     easily.  Oh well.  */
+
+		  asection *s;
+		  void *vpp;
+		  Elf_Internal_Sym *isym;
+
+		  isym = bfd_sym_from_r_symndx (&htab->sym_cache,
+						abfd, r_symndx);
+		  if (isym == NULL)
+		    return FALSE;
+
+		  s = bfd_section_from_elf_index (abfd, isym->st_shndx);
+		  if (s == NULL)
+		    s = sec;
+
+		  vpp = &elf_section_data (s)->local_dynrel;
+		  head = (struct riscv_elf_dyn_relocs **) vpp;
+		}
+
+	      p = *head;
+	      if (p == NULL || p->sec != sec)
+		{
+		  bfd_size_type amt = sizeof *p;
+		  p = ((struct riscv_elf_dyn_relocs *)
+		       bfd_alloc (htab->elf.dynobj, amt));
+		  if (p == NULL)
+		    return FALSE;
+		  p->next = *head;
+		  *head = p;
+		  p->sec = sec;
+		  p->count = 0;
+		  p->pc_count = 0;
+		}
+
+	      p->count += 1;
+	      p->pc_count += riscv_elf_rtype_to_howto (r_type)->pc_relative;
+	    }
+
+	  break;
+
+	case R_RISCV_GNU_VTINHERIT:
+	  if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
+	    return FALSE;
+	  break;
+
+	case R_RISCV_GNU_VTENTRY:
+	  if (!bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
+	    return FALSE;
+	  break;
+
+	default:
+	  break;
+	}
+    }
+
+  return TRUE;
+}
+
+static asection *
+riscv_elf_gc_mark_hook (asection *sec,
+			struct bfd_link_info *info,
+			Elf_Internal_Rela *rel,
+			struct elf_link_hash_entry *h,
+			Elf_Internal_Sym *sym)
+{
+  if (h != NULL)
+    switch (ELFNN_R_TYPE (rel->r_info))
+      {
+      case R_RISCV_GNU_VTINHERIT:
+      case R_RISCV_GNU_VTENTRY:
+	return NULL;
+      }
+
+  return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
+}
+
+/* Update the got entry reference counts for the section being removed.  */
+static bfd_boolean
+riscv_elf_gc_sweep_hook (bfd *abfd, struct bfd_link_info *info,
+			 asection *sec, const Elf_Internal_Rela *relocs)
+{
+  const Elf_Internal_Rela *rel, *relend;
+  Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (abfd);
+  struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd);
+  bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (abfd);
+
+  if (bfd_link_relocatable (info))
+    return TRUE;
+
+  elf_section_data (sec)->local_dynrel = NULL;
+
+  for (rel = relocs, relend = relocs + sec->reloc_count; rel < relend; rel++)
+    {
+      unsigned long r_symndx;
+      struct elf_link_hash_entry *h = NULL;
+
+      r_symndx = ELFNN_R_SYM (rel->r_info);
+      if (r_symndx >= symtab_hdr->sh_info)
+	{
+	  struct riscv_elf_link_hash_entry *eh;
+	  struct riscv_elf_dyn_relocs **pp;
+	  struct riscv_elf_dyn_relocs *p;
+
+	  h = sym_hashes[r_symndx - symtab_hdr->sh_info];
+	  while (h->root.type == bfd_link_hash_indirect
+		 || h->root.type == bfd_link_hash_warning)
+	    h = (struct elf_link_hash_entry *) h->root.u.i.link;
+	  eh = (struct riscv_elf_link_hash_entry *) h;
+	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next)
+	    if (p->sec == sec)
+	      {
+		/* Everything must go for SEC.  */
+		*pp = p->next;
+		break;
+	      }
+	}
+
+      switch (ELFNN_R_TYPE (rel->r_info))
+	{
+	case R_RISCV_GOT_HI20:
+	case R_RISCV_TLS_GOT_HI20:
+	case R_RISCV_TLS_GD_HI20:
+	  if (h != NULL)
+	    {
+	      if (h->got.refcount > 0)
+		h->got.refcount--;
+	    }
+	  else
+	    {
+	      if (local_got_refcounts &&
+		  local_got_refcounts[r_symndx] > 0)
+		local_got_refcounts[r_symndx]--;
+	    }
+	  break;
+
+	case R_RISCV_HI20:
+	case R_RISCV_PCREL_HI20:
+	case R_RISCV_COPY:
+	case R_RISCV_JUMP_SLOT:
+	case R_RISCV_RELATIVE:
+	case R_RISCV_64:
+	case R_RISCV_32:
+	case R_RISCV_BRANCH:
+	case R_RISCV_CALL:
+	case R_RISCV_JAL:
+	case R_RISCV_RVC_BRANCH:
+	case R_RISCV_RVC_JUMP:
+	  if (bfd_link_pic (info))
+	    break;
+	  /* Fall through.  */
+
+	case R_RISCV_CALL_PLT:
+	  if (h != NULL)
+	    {
+	      if (h->plt.refcount > 0)
+		h->plt.refcount--;
+	    }
+	  break;
+
+	default:
+	  break;
+	}
+    }
+
+  return TRUE;
+}
+
+/* Adjust a symbol defined by a dynamic object and referenced by a
+   regular object.  The current definition is in some section of the
+   dynamic object, but we're not including those sections.  We have to
+   change the definition to something the rest of the link can
+   understand.  */
+
+static bfd_boolean
+riscv_elf_adjust_dynamic_symbol (struct bfd_link_info *info,
+				 struct elf_link_hash_entry *h)
+{
+  struct riscv_elf_link_hash_table *htab;
+  struct riscv_elf_link_hash_entry * eh;
+  struct riscv_elf_dyn_relocs *p;
+  bfd *dynobj;
+  asection *s;
+
+  htab = riscv_elf_hash_table (info);
+  BFD_ASSERT (htab != NULL);
+
+  dynobj = htab->elf.dynobj;
+
+  /* Make sure we know what is going on here.  */
+  BFD_ASSERT (dynobj != NULL
+	      && (h->needs_plt
+		  || h->type == STT_GNU_IFUNC
+		  || h->u.weakdef != NULL
+		  || (h->def_dynamic
+		      && h->ref_regular
+		      && !h->def_regular)));
+
+  /* If this is a function, put it in the procedure linkage table.  We
+     will fill in the contents of the procedure linkage table later
+     (although we could actually do it here).  */
+  if (h->type == STT_FUNC || h->type == STT_GNU_IFUNC || h->needs_plt)
+    {
+      if (h->plt.refcount <= 0
+	  || SYMBOL_CALLS_LOCAL (info, h)
+	  || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
+	      && h->root.type == bfd_link_hash_undefweak))
+	{
+	  /* This case can occur if we saw a R_RISCV_CALL_PLT reloc in an
+	     input file, but the symbol was never referred to by a dynamic
+	     object, or if all references were garbage collected.  In such
+	     a case, we don't actually need to build a PLT entry.  */
+	  h->plt.offset = (bfd_vma) -1;
+	  h->needs_plt = 0;
+	}
+
+      return TRUE;
+    }
+  else
+    h->plt.offset = (bfd_vma) -1;
+
+  /* If this is a weak symbol, and there is a real definition, the
+     processor independent code will have arranged for us to see the
+     real definition first, and we can just use the same value.  */
+  if (h->u.weakdef != NULL)
+    {
+      BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
+		  || h->u.weakdef->root.type == bfd_link_hash_defweak);
+      h->root.u.def.section = h->u.weakdef->root.u.def.section;
+      h->root.u.def.value = h->u.weakdef->root.u.def.value;
+      return TRUE;
+    }
+
+  /* This is a reference to a symbol defined by a dynamic object which
+     is not a function.  */
+
+  /* If we are creating a shared library, we must presume that the
+     only references to the symbol are via the global offset table.
+     For such cases we need not do anything here; the relocations will
+     be handled correctly by relocate_section.  */
+  if (bfd_link_pic (info))
+    return TRUE;
+
+  /* If there are no references to this symbol that do not use the
+     GOT, we don't need to generate a copy reloc.  */
+  if (!h->non_got_ref)
+    return TRUE;
+
+  /* If -z nocopyreloc was given, we won't generate them either.  */
+  if (info->nocopyreloc)
+    {
+      h->non_got_ref = 0;
+      return TRUE;
+    }
+
+  eh = (struct riscv_elf_link_hash_entry *) h;
+  for (p = eh->dyn_relocs; p != NULL; p = p->next)
+    {
+      s = p->sec->output_section;
+      if (s != NULL && (s->flags & SEC_READONLY) != 0)
+	break;
+    }
+
+  /* If we didn't find any dynamic relocs in read-only sections, then
+     we'll be keeping the dynamic relocs and avoiding the copy reloc.  */
+  if (p == NULL)
+    {
+      h->non_got_ref = 0;
+      return TRUE;
+    }
+
+  /* We must allocate the symbol in our .dynbss section, which will
+     become part of the .bss section of the executable.  There will be
+     an entry for this symbol in the .dynsym section.  The dynamic
+     object will contain position independent code, so all references
+     from the dynamic object to this symbol will go through the global
+     offset table.  The dynamic linker will use the .dynsym entry to
+     determine the address it must put in the global offset table, so
+     both the dynamic object and the regular object will refer to the
+     same memory location for the variable.  */
+
+  /* We must generate a R_RISCV_COPY reloc to tell the dynamic linker
+     to copy the initial value out of the dynamic object and into the
+     runtime process image.  We need to remember the offset into the
+     .rel.bss section we are going to use.  */
+  if ((h->root.u.def.section->flags & SEC_ALLOC) != 0 && h->size != 0)
+    {
+      htab->srelbss->size += sizeof (ElfNN_External_Rela);
+      h->needs_copy = 1;
+    }
+
+  if (eh->tls_type & ~GOT_NORMAL)
+    return _bfd_elf_adjust_dynamic_copy (info, h, htab->sdyntdata);
+
+  return _bfd_elf_adjust_dynamic_copy (info, h, htab->sdynbss);
+}
+
+/* Allocate space in .plt, .got and associated reloc sections for
+   dynamic relocs.  */
+
+static bfd_boolean
+allocate_dynrelocs (struct elf_link_hash_entry *h, void *inf)
+{
+  struct bfd_link_info *info;
+  struct riscv_elf_link_hash_table *htab;
+  struct riscv_elf_link_hash_entry *eh;
+  struct riscv_elf_dyn_relocs *p;
+
+  if (h->root.type == bfd_link_hash_indirect)
+    return TRUE;
+
+  info = (struct bfd_link_info *) inf;
+  htab = riscv_elf_hash_table (info);
+  BFD_ASSERT (htab != NULL);
+
+  if (htab->elf.dynamic_sections_created
+      && h->plt.refcount > 0)
+    {
+      /* Make sure this symbol is output as a dynamic symbol.
+	 Undefined weak syms won't yet be marked as dynamic.  */
+      if (h->dynindx == -1
+	  && !h->forced_local)
+	{
+	  if (! bfd_elf_link_record_dynamic_symbol (info, h))
+	    return FALSE;
+	}
+
+      if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, bfd_link_pic (info), h))
+	{
+	  asection *s = htab->elf.splt;
+
+	  if (s->size == 0)
+	    s->size = PLT_HEADER_SIZE;
+
+	  h->plt.offset = s->size;
+
+	  /* Make room for this entry.  */
+	  s->size += PLT_ENTRY_SIZE;
+
+	  /* We also need to make an entry in the .got.plt section.  */
+	  htab->elf.sgotplt->size += GOT_ENTRY_SIZE;
+
+	  /* We also need to make an entry in the .rela.plt section.  */
+	  htab->elf.srelplt->size += sizeof (ElfNN_External_Rela);
+
+	  /* If this symbol is not defined in a regular file, and we are
+	     not generating a shared library, then set the symbol to this
+	     location in the .plt.  This is required to make function
+	     pointers compare as equal between the normal executable and
+	     the shared library.  */
+	  if (! bfd_link_pic (info)
+	      && !h->def_regular)
+	    {
+	      h->root.u.def.section = s;
+	      h->root.u.def.value = h->plt.offset;
+	    }
+	}
+      else
+	{
+	  h->plt.offset = (bfd_vma) -1;
+	  h->needs_plt = 0;
+	}
+    }
+  else
+    {
+      h->plt.offset = (bfd_vma) -1;
+      h->needs_plt = 0;
+    }
+
+  if (h->got.refcount > 0)
+    {
+      asection *s;
+      bfd_boolean dyn;
+      int tls_type = riscv_elf_hash_entry (h)->tls_type;
+
+      /* Make sure this symbol is output as a dynamic symbol.
+	 Undefined weak syms won't yet be marked as dynamic.  */
+      if (h->dynindx == -1
+	  && !h->forced_local)
+	{
+	  if (! bfd_elf_link_record_dynamic_symbol (info, h))
+	    return FALSE;
+	}
+
+      s = htab->elf.sgot;
+      h->got.offset = s->size;
+      dyn = htab->elf.dynamic_sections_created;
+      if (tls_type & (GOT_TLS_GD | GOT_TLS_IE))
+	{
+	  /* TLS_GD needs two dynamic relocs and two GOT slots.  */
+	  if (tls_type & GOT_TLS_GD)
+	    {
+	      s->size += 2 * RISCV_ELF_WORD_BYTES;
+	      htab->elf.srelgot->size += 2 * sizeof (ElfNN_External_Rela);
+	    }
+
+	  /* TLS_IE needs one dynamic reloc and one GOT slot.  */
+	  if (tls_type & GOT_TLS_IE)
+	    {
+	      s->size += RISCV_ELF_WORD_BYTES;
+	      htab->elf.srelgot->size += sizeof (ElfNN_External_Rela);
+	    }
+	}
+      else
+	{
+	  s->size += RISCV_ELF_WORD_BYTES;
+	  if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, bfd_link_pic (info), h))
+	    htab->elf.srelgot->size += sizeof (ElfNN_External_Rela);
+	}
+    }
+  else
+    h->got.offset = (bfd_vma) -1;
+
+  eh = (struct riscv_elf_link_hash_entry *) h;
+  if (eh->dyn_relocs == NULL)
+    return TRUE;
+
+  /* In the shared -Bsymbolic case, discard space allocated for
+     dynamic pc-relative relocs against symbols which turn out to be
+     defined in regular objects.  For the normal shared case, discard
+     space for pc-relative relocs that have become local due to symbol
+     visibility changes.  */
+
+  if (bfd_link_pic (info))
+    {
+      if (SYMBOL_CALLS_LOCAL (info, h))
+	{
+	  struct riscv_elf_dyn_relocs **pp;
+
+	  for (pp = &eh->dyn_relocs; (p = *pp) != NULL; )
+	    {
+	      p->count -= p->pc_count;
+	      p->pc_count = 0;
+	      if (p->count == 0)
+		*pp = p->next;
+	      else
+		pp = &p->next;
+	    }
+	}
+
+      /* Also discard relocs on undefined weak syms with non-default
+	 visibility.  */
+      if (eh->dyn_relocs != NULL
+	  && h->root.type == bfd_link_hash_undefweak)
+	{
+	  if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
+	    eh->dyn_relocs = NULL;
+
+	  /* Make sure undefined weak symbols are output as a dynamic
+	     symbol in PIEs.  */
+	  else if (h->dynindx == -1
+		   && !h->forced_local)
+	    {
+	      if (! bfd_elf_link_record_dynamic_symbol (info, h))
+		return FALSE;
+	    }
+	}
+    }
+  else
+    {
+      /* For the non-shared case, discard space for relocs against
+	 symbols which turn out to need copy relocs or are not
+	 dynamic.  */
+
+      if (!h->non_got_ref
+	  && ((h->def_dynamic
+	       && !h->def_regular)
+	      || (htab->elf.dynamic_sections_created
+		  && (h->root.type == bfd_link_hash_undefweak
+		      || h->root.type == bfd_link_hash_undefined))))
+	{
+	  /* Make sure this symbol is output as a dynamic symbol.
+	     Undefined weak syms won't yet be marked as dynamic.  */
+	  if (h->dynindx == -1
+	      && !h->forced_local)
+	    {
+	      if (! bfd_elf_link_record_dynamic_symbol (info, h))
+		return FALSE;
+	    }
+
+	  /* If that succeeded, we know we'll be keeping all the
+	     relocs.  */
+	  if (h->dynindx != -1)
+	    goto keep;
+	}
+
+      eh->dyn_relocs = NULL;
+
+    keep: ;
+    }
+
+  /* Finally, allocate space.  */
+  for (p = eh->dyn_relocs; p != NULL; p = p->next)
+    {
+      asection *sreloc = elf_section_data (p->sec)->sreloc;
+      sreloc->size += p->count * sizeof (ElfNN_External_Rela);
+    }
+
+  return TRUE;
+}
+
+/* Find any dynamic relocs that apply to read-only sections.  */
+
+static bfd_boolean
+readonly_dynrelocs (struct elf_link_hash_entry *h, void *inf)
+{
+  struct riscv_elf_link_hash_entry *eh;
+  struct riscv_elf_dyn_relocs *p;
+
+  eh = (struct riscv_elf_link_hash_entry *) h;
+  for (p = eh->dyn_relocs; p != NULL; p = p->next)
+    {
+      asection *s = p->sec->output_section;
+
+      if (s != NULL && (s->flags & SEC_READONLY) != 0)
+	{
+	  ((struct bfd_link_info *) inf)->flags |= DF_TEXTREL;
+	  return FALSE;
+	}
+    }
+  return TRUE;
+}
+
+static bfd_boolean
+riscv_elf_size_dynamic_sections (bfd *output_bfd, struct bfd_link_info *info)
+{
+  struct riscv_elf_link_hash_table *htab;
+  bfd *dynobj;
+  asection *s;
+  bfd *ibfd;
+
+  htab = riscv_elf_hash_table (info);
+  BFD_ASSERT (htab != NULL);
+  dynobj = htab->elf.dynobj;
+  BFD_ASSERT (dynobj != NULL);
+
+  if (elf_hash_table (info)->dynamic_sections_created)
+    {
+      /* Set the contents of the .interp section to the interpreter.  */
+      if (bfd_link_executable (info) && !info->nointerp)
+	{
+	  s = bfd_get_linker_section (dynobj, ".interp");
+	  BFD_ASSERT (s != NULL);
+	  s->size = strlen (ELFNN_DYNAMIC_INTERPRETER) + 1;
+	  s->contents = (unsigned char *) ELFNN_DYNAMIC_INTERPRETER;
+	}
+    }
+
+  /* Set up .got offsets for local syms, and space for local dynamic
+     relocs.  */
+  for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link.next)
+    {
+      bfd_signed_vma *local_got;
+      bfd_signed_vma *end_local_got;
+      char *local_tls_type;
+      bfd_size_type locsymcount;
+      Elf_Internal_Shdr *symtab_hdr;
+      asection *srel;
+
+      if (! is_riscv_elf (ibfd))
+	continue;
+
+      for (s = ibfd->sections; s != NULL; s = s->next)
+	{
+	  struct riscv_elf_dyn_relocs *p;
+
+	  for (p = elf_section_data (s)->local_dynrel; p != NULL; p = p->next)
+	    {
+	      if (!bfd_is_abs_section (p->sec)
+		  && bfd_is_abs_section (p->sec->output_section))
+		{
+		  /* Input section has been discarded, either because
+		     it is a copy of a linkonce section or due to
+		     linker script /DISCARD/, so we'll be discarding
+		     the relocs too.  */
+		}
+	      else if (p->count != 0)
+		{
+		  srel = elf_section_data (p->sec)->sreloc;
+		  srel->size += p->count * sizeof (ElfNN_External_Rela);
+		  if ((p->sec->output_section->flags & SEC_READONLY) != 0)
+		    info->flags |= DF_TEXTREL;
+		}
+	    }
+	}
+
+      local_got = elf_local_got_refcounts (ibfd);
+      if (!local_got)
+	continue;
+
+      symtab_hdr = &elf_symtab_hdr (ibfd);
+      locsymcount = symtab_hdr->sh_info;
+      end_local_got = local_got + locsymcount;
+      local_tls_type = _bfd_riscv_elf_local_got_tls_type (ibfd);
+      s = htab->elf.sgot;
+      srel = htab->elf.srelgot;
+      for (; local_got < end_local_got; ++local_got, ++local_tls_type)
+	{
+	  if (*local_got > 0)
+	    {
+	      *local_got = s->size;
+	      s->size += RISCV_ELF_WORD_BYTES;
+	      if (*local_tls_type & GOT_TLS_GD)
+		s->size += RISCV_ELF_WORD_BYTES;
+	      if (bfd_link_pic (info)
+		  || (*local_tls_type & (GOT_TLS_GD | GOT_TLS_IE)))
+		srel->size += sizeof (ElfNN_External_Rela);
+	    }
+	  else
+	    *local_got = (bfd_vma) -1;
+	}
+    }
+
+  /* Allocate global sym .plt and .got entries, and space for global
+     sym dynamic relocs.  */
+  elf_link_hash_traverse (&htab->elf, allocate_dynrelocs, info);
+
+  if (htab->elf.sgotplt)
+    {
+      struct elf_link_hash_entry *got;
+      got = elf_link_hash_lookup (elf_hash_table (info),
+				  "_GLOBAL_OFFSET_TABLE_",
+				  FALSE, FALSE, FALSE);
+
+      /* Don't allocate .got.plt section if there are no GOT nor PLT
+	 entries and there is no refeence to _GLOBAL_OFFSET_TABLE_.  */
+      if ((got == NULL
+	   || !got->ref_regular_nonweak)
+	  && (htab->elf.sgotplt->size == GOTPLT_HEADER_SIZE)
+	  && (htab->elf.splt == NULL
+	      || htab->elf.splt->size == 0)
+	  && (htab->elf.sgot == NULL
+	      || (htab->elf.sgot->size
+		  == get_elf_backend_data (output_bfd)->got_header_size)))
+	htab->elf.sgotplt->size = 0;
+    }
+
+  /* The check_relocs and adjust_dynamic_symbol entry points have
+     determined the sizes of the various dynamic sections.  Allocate
+     memory for them.  */
+  for (s = dynobj->sections; s != NULL; s = s->next)
+    {
+      if ((s->flags & SEC_LINKER_CREATED) == 0)
+	continue;
+
+      if (s == htab->elf.splt
+	  || s == htab->elf.sgot
+	  || s == htab->elf.sgotplt
+	  || s == htab->sdynbss)
+	{
+	  /* Strip this section if we don't need it; see the
+	     comment below.  */
+	}
+      else if (strncmp (s->name, ".rela", 5) == 0)
+	{
+	  if (s->size != 0)
+	    {
+	      /* We use the reloc_count field as a counter if we need
+		 to copy relocs into the output file.  */
+	      s->reloc_count = 0;
+	    }
+	}
+      else
+	{
+	  /* It's not one of our sections.  */
+	  continue;
+	}
+
+      if (s->size == 0)
+	{
+	  /* If we don't need this section, strip it from the
+	     output file.  This is mostly to handle .rela.bss and
+	     .rela.plt.  We must create both sections in
+	     create_dynamic_sections, because they must be created
+	     before the linker maps input sections to output
+	     sections.  The linker does that before
+	     adjust_dynamic_symbol is called, and it is that
+	     function which decides whether anything needs to go
+	     into these sections.  */
+	  s->flags |= SEC_EXCLUDE;
+	  continue;
+	}
+
+      if ((s->flags & SEC_HAS_CONTENTS) == 0)
+	continue;
+
+      /* Allocate memory for the section contents.  Zero the memory
+	 for the benefit of .rela.plt, which has 4 unused entries
+	 at the beginning, and we don't want garbage.  */
+      s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
+      if (s->contents == NULL)
+	return FALSE;
+    }
+
+  if (elf_hash_table (info)->dynamic_sections_created)
+    {
+      /* Add some entries to the .dynamic section.  We fill in the
+	 values later, in riscv_elf_finish_dynamic_sections, but we
+	 must add the entries now so that we get the correct size for
+	 the .dynamic section.  The DT_DEBUG entry is filled in by the
+	 dynamic linker and used by the debugger.  */
+#define add_dynamic_entry(TAG, VAL) \
+  _bfd_elf_add_dynamic_entry (info, TAG, VAL)
+
+      if (bfd_link_executable (info))
+	{
+	  if (!add_dynamic_entry (DT_DEBUG, 0))
+	    return FALSE;
+	}
+
+      if (htab->elf.srelplt->size != 0)
+	{
+	  if (!add_dynamic_entry (DT_PLTGOT, 0)
+	      || !add_dynamic_entry (DT_PLTRELSZ, 0)
+	      || !add_dynamic_entry (DT_PLTREL, DT_RELA)
+	      || !add_dynamic_entry (DT_JMPREL, 0))
+	    return FALSE;
+	}
+
+      if (!add_dynamic_entry (DT_RELA, 0)
+	  || !add_dynamic_entry (DT_RELASZ, 0)
+	  || !add_dynamic_entry (DT_RELAENT, sizeof (ElfNN_External_Rela)))
+	return FALSE;
+
+      /* If any dynamic relocs apply to a read-only section,
+	 then we need a DT_TEXTREL entry.  */
+      if ((info->flags & DF_TEXTREL) == 0)
+	elf_link_hash_traverse (&htab->elf, readonly_dynrelocs, info);
+
+      if (info->flags & DF_TEXTREL)
+	{
+	  if (!add_dynamic_entry (DT_TEXTREL, 0))
+	    return FALSE;
+	}
+    }
+#undef add_dynamic_entry
+
+  return TRUE;
+}
+
+#define TP_OFFSET 0
+#define DTP_OFFSET 0x800
+
+/* Return the relocation value for a TLS dtp-relative reloc.  */
+
+static bfd_vma
+dtpoff (struct bfd_link_info *info, bfd_vma address)
+{
+  /* If tls_sec is NULL, we should have signalled an error already.  */
+  if (elf_hash_table (info)->tls_sec == NULL)
+    return 0;
+  return address - elf_hash_table (info)->tls_sec->vma - DTP_OFFSET;
+}
+
+/* Return the relocation value for a static TLS tp-relative relocation.  */
+
+static bfd_vma
+tpoff (struct bfd_link_info *info, bfd_vma address)
+{
+  /* If tls_sec is NULL, we should have signalled an error already.  */
+  if (elf_hash_table (info)->tls_sec == NULL)
+    return 0;
+  return address - elf_hash_table (info)->tls_sec->vma - TP_OFFSET;
+}
+
+/* Return the global pointer's value, or 0 if it is not in use.  */
+
+static bfd_vma
+riscv_global_pointer_value (struct bfd_link_info *info)
+{
+  struct bfd_link_hash_entry *h;
+
+  h = bfd_link_hash_lookup (info->hash, "_gp", FALSE, FALSE, TRUE);
+  if (h == NULL || h->type != bfd_link_hash_defined)
+    return 0;
+
+  return h->u.def.value + sec_addr (h->u.def.section);
+}
+
+/* Emplace a static relocation.  */
+
+static bfd_reloc_status_type
+perform_relocation (const reloc_howto_type *howto,
+		    const Elf_Internal_Rela *rel,
+		    bfd_vma value,
+		    asection *input_section,
+		    bfd *input_bfd,
+		    bfd_byte *contents)
+{
+  if (howto->pc_relative)
+    value -= sec_addr (input_section) + rel->r_offset;
+  value += rel->r_addend;
+
+  switch (ELFNN_R_TYPE (rel->r_info))
+    {
+    case R_RISCV_HI20:
+    case R_RISCV_TPREL_HI20:
+    case R_RISCV_PCREL_HI20:
+    case R_RISCV_GOT_HI20:
+    case R_RISCV_TLS_GOT_HI20:
+    case R_RISCV_TLS_GD_HI20:
+      if (ARCH_SIZE > 32 && !VALID_UTYPE_IMM (RISCV_CONST_HIGH_PART (value)))
+	return bfd_reloc_overflow;
+      value = ENCODE_UTYPE_IMM (RISCV_CONST_HIGH_PART (value));
+      break;
+
+    case R_RISCV_LO12_I:
+    case R_RISCV_GPREL_I:
+    case R_RISCV_TPREL_LO12_I:
+    case R_RISCV_PCREL_LO12_I:
+      value = ENCODE_ITYPE_IMM (value);
+      break;
+
+    case R_RISCV_LO12_S:
+    case R_RISCV_GPREL_S:
+    case R_RISCV_TPREL_LO12_S:
+    case R_RISCV_PCREL_LO12_S:
+      value = ENCODE_STYPE_IMM (value);
+      break;
+
+    case R_RISCV_CALL:
+    case R_RISCV_CALL_PLT:
+      if (ARCH_SIZE > 32 && !VALID_UTYPE_IMM (RISCV_CONST_HIGH_PART (value)))
+	return bfd_reloc_overflow;
+      value = ENCODE_UTYPE_IMM (RISCV_CONST_HIGH_PART (value))
+	      | (ENCODE_ITYPE_IMM (value) << 32);
+      break;
+
+    case R_RISCV_JAL:
+      if (!VALID_UJTYPE_IMM (value))
+	return bfd_reloc_overflow;
+      value = ENCODE_UJTYPE_IMM (value);
+      break;
+
+    case R_RISCV_BRANCH:
+      if (!VALID_SBTYPE_IMM (value))
+	return bfd_reloc_overflow;
+      value = ENCODE_SBTYPE_IMM (value);
+      break;
+
+    case R_RISCV_RVC_BRANCH:
+      if (!VALID_RVC_B_IMM (value))
+	return bfd_reloc_overflow;
+      value = ENCODE_RVC_B_IMM (value);
+      break;
+
+    case R_RISCV_RVC_JUMP:
+      if (!VALID_RVC_J_IMM (value))
+	return bfd_reloc_overflow;
+      value = ENCODE_RVC_J_IMM (value);
+      break;
+
+    case R_RISCV_RVC_LUI:
+      if (!VALID_RVC_LUI_IMM (RISCV_CONST_HIGH_PART (value)))
+	return bfd_reloc_overflow;
+      value = ENCODE_RVC_LUI_IMM (RISCV_CONST_HIGH_PART (value));
+      break;
+
+    case R_RISCV_32:
+    case R_RISCV_64:
+    case R_RISCV_ADD8:
+    case R_RISCV_ADD16:
+    case R_RISCV_ADD32:
+    case R_RISCV_ADD64:
+    case R_RISCV_SUB8:
+    case R_RISCV_SUB16:
+    case R_RISCV_SUB32:
+    case R_RISCV_SUB64:
+    case R_RISCV_TLS_DTPREL32:
+    case R_RISCV_TLS_DTPREL64:
+      break;
+
+    default:
+      return bfd_reloc_notsupported;
+    }
+
+  bfd_vma word = bfd_get (howto->bitsize, input_bfd, contents + rel->r_offset);
+  word = (word & ~howto->dst_mask) | (value & howto->dst_mask);
+  bfd_put (howto->bitsize, input_bfd, word, contents + rel->r_offset);
+
+  return bfd_reloc_ok;
+}
+
+/* Remember all PC-relative high-part relocs we've encountered to help us
+   later resolve the corresponding low-part relocs.  */
+
+typedef struct {
+  bfd_vma address;
+  bfd_vma value;
+} riscv_pcrel_hi_reloc;
+
+typedef struct riscv_pcrel_lo_reloc {
+  asection *input_section;
+  struct bfd_link_info *info;
+  reloc_howto_type *howto;
+  const Elf_Internal_Rela *reloc;
+  bfd_vma addr;
+  const char *name;
+  bfd_byte *contents;
+  struct riscv_pcrel_lo_reloc *next;
+} riscv_pcrel_lo_reloc;
+
+typedef struct {
+  htab_t hi_relocs;
+  riscv_pcrel_lo_reloc *lo_relocs;
+} riscv_pcrel_relocs;
+
+static hashval_t
+riscv_pcrel_reloc_hash (const void *entry)
+{
+  const riscv_pcrel_hi_reloc *e = entry;
+  return (hashval_t)(e->address >> 2);
+}
+
+static bfd_boolean
+riscv_pcrel_reloc_eq (const void *entry1, const void *entry2)
+{
+  const riscv_pcrel_hi_reloc *e1 = entry1, *e2 = entry2;
+  return e1->address == e2->address;
+}
+
+static bfd_boolean
+riscv_init_pcrel_relocs (riscv_pcrel_relocs *p)
+{
+
+  p->lo_relocs = NULL;
+  p->hi_relocs = htab_create (1024, riscv_pcrel_reloc_hash,
+			      riscv_pcrel_reloc_eq, free);
+  return p->hi_relocs != NULL;
+}
+
+static void
+riscv_free_pcrel_relocs (riscv_pcrel_relocs *p)
+{
+  riscv_pcrel_lo_reloc *cur = p->lo_relocs;
+  while (cur != NULL)
+    {
+      riscv_pcrel_lo_reloc *next = cur->next;
+      free (cur);
+      cur = next;
+    }
+
+  htab_delete (p->hi_relocs);
+}
+
+static bfd_boolean
+riscv_record_pcrel_hi_reloc (riscv_pcrel_relocs *p, bfd_vma addr, bfd_vma value)
+{
+  riscv_pcrel_hi_reloc entry = {addr, value - addr};
+  riscv_pcrel_hi_reloc **slot =
+    (riscv_pcrel_hi_reloc **) htab_find_slot (p->hi_relocs, &entry, INSERT);
+  BFD_ASSERT (*slot == NULL);
+  *slot = (riscv_pcrel_hi_reloc *) bfd_malloc (sizeof (riscv_pcrel_hi_reloc));
+  if (*slot == NULL)
+    return FALSE;
+  **slot = entry;
+  return TRUE;
+}
+
+static bfd_boolean
+riscv_record_pcrel_lo_reloc (riscv_pcrel_relocs *p,
+			     asection *input_section,
+			     struct bfd_link_info *info,
+			     reloc_howto_type *howto,
+			     const Elf_Internal_Rela *reloc,
+			     bfd_vma addr,
+			     const char *name,
+			     bfd_byte *contents)
+{
+  riscv_pcrel_lo_reloc *entry;
+  entry = (riscv_pcrel_lo_reloc *) bfd_malloc (sizeof (riscv_pcrel_lo_reloc));
+  if (entry == NULL)
+    return FALSE;
+  *entry = (riscv_pcrel_lo_reloc) {input_section, info, howto, reloc, addr,
+				   name, contents, p->lo_relocs};
+  p->lo_relocs = entry;
+  return TRUE;
+}
+
+static bfd_boolean
+riscv_resolve_pcrel_lo_relocs (riscv_pcrel_relocs *p)
+{
+  riscv_pcrel_lo_reloc *r;
+  for (r = p->lo_relocs; r != NULL; r = r->next)
+    {
+      bfd *input_bfd = r->input_section->owner;
+      riscv_pcrel_hi_reloc search = {r->addr, 0};
+      riscv_pcrel_hi_reloc *entry = htab_find (p->hi_relocs, &search);
+      if (entry == NULL)
+        {
+	  ((*r->info->callbacks->reloc_overflow)
+	   (r->info, NULL, r->name, r->howto->name, (bfd_vma) 0,
+	    input_bfd, r->input_section, r->reloc->r_offset));
+	  return TRUE;
+        }
+
+      perform_relocation (r->howto, r->reloc, entry->value, r->input_section,
+			  input_bfd, r->contents);
+    }
+
+  return TRUE;
+}
+
+/* Relocate a RISC-V ELF section.
+
+   The RELOCATE_SECTION function is called by the new ELF backend linker
+   to handle the relocations for a section.
+
+   The relocs are always passed as Rela structures.
+
+   This function is responsible for adjusting the section contents as
+   necessary, and (if generating a relocatable output file) adjusting
+   the reloc addend as necessary.
+
+   This function does not have to worry about setting the reloc
+   address or the reloc symbol index.
+
+   LOCAL_SYMS is a pointer to the swapped in local symbols.
+
+   LOCAL_SECTIONS is an array giving the section in the input file
+   corresponding to the st_shndx field of each local symbol.
+
+   The global hash table entry for the global symbols can be found
+   via elf_sym_hashes (input_bfd).
+
+   When generating relocatable output, this function must handle
+   STB_LOCAL/STT_SECTION symbols specially.  The output symbol is
+   going to be the section symbol corresponding to the output
+   section, which means that the addend must be adjusted
+   accordingly.  */
+
+static bfd_boolean
+riscv_elf_relocate_section (bfd *output_bfd, struct bfd_link_info *info,
+			    bfd *input_bfd, asection *input_section,
+			    bfd_byte *contents, Elf_Internal_Rela *relocs,
+			    Elf_Internal_Sym *local_syms,
+			    asection **local_sections)
+{
+  Elf_Internal_Rela *rel;
+  Elf_Internal_Rela *relend;
+  riscv_pcrel_relocs pcrel_relocs;
+  bfd_boolean ret = FALSE;
+  asection *sreloc = elf_section_data (input_section)->sreloc;
+  struct riscv_elf_link_hash_table *htab = riscv_elf_hash_table (info);
+  Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (input_bfd);
+  struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd);
+  bfd_vma *local_got_offsets = elf_local_got_offsets (input_bfd);
+
+  if (!riscv_init_pcrel_relocs (&pcrel_relocs))
+    return FALSE;
+
+  relend = relocs + input_section->reloc_count;
+  for (rel = relocs; rel < relend; rel++)
+    {
+      unsigned long r_symndx;
+      struct elf_link_hash_entry *h;
+      Elf_Internal_Sym *sym;
+      asection *sec;
+      bfd_vma relocation;
+      bfd_reloc_status_type r = bfd_reloc_ok;
+      const char *name;
+      bfd_vma off, ie_off;
+      bfd_boolean unresolved_reloc, is_ie = FALSE;
+      bfd_vma pc = sec_addr (input_section) + rel->r_offset;
+      int r_type = ELFNN_R_TYPE (rel->r_info), tls_type;
+      reloc_howto_type *howto = riscv_elf_rtype_to_howto (r_type);
+      const char *msg = NULL;
+
+      if (r_type == R_RISCV_GNU_VTINHERIT || r_type == R_RISCV_GNU_VTENTRY)
+	continue;
+
+      /* This is a final link.  */
+      r_symndx = ELFNN_R_SYM (rel->r_info);
+      h = NULL;
+      sym = NULL;
+      sec = NULL;
+      unresolved_reloc = FALSE;
+      if (r_symndx < symtab_hdr->sh_info)
+	{
+	  sym = local_syms + r_symndx;
+	  sec = local_sections[r_symndx];
+	  relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
+	}
+      else
+	{
+	  bfd_boolean warned, ignored;
+
+	  RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
+				   r_symndx, symtab_hdr, sym_hashes,
+				   h, sec, relocation,
+				   unresolved_reloc, warned, ignored);
+	  if (warned)
+	    {
+	      /* To avoid generating warning messages about truncated
+		 relocations, set the relocation's address to be the same as
+		 the start of this section.  */
+	      if (input_section->output_section != NULL)
+		relocation = input_section->output_section->vma;
+	      else
+		relocation = 0;
+	    }
+	}
+
+      if (sec != NULL && discarded_section (sec))
+	RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
+					 rel, 1, relend, howto, 0, contents);
+
+      if (bfd_link_relocatable (info))
+	continue;
+
+      if (h != NULL)
+	name = h->root.root.string;
+      else
+	{
+	  name = (bfd_elf_string_from_elf_section
+		  (input_bfd, symtab_hdr->sh_link, sym->st_name));
+	  if (name == NULL || *name == '\0')
+	    name = bfd_section_name (input_bfd, sec);
+	}
+
+      switch (r_type)
+	{
+	case R_RISCV_NONE:
+	case R_RISCV_TPREL_ADD:
+	case R_RISCV_COPY:
+	case R_RISCV_JUMP_SLOT:
+	case R_RISCV_RELATIVE:
+	  /* These require nothing of us at all.  */
+	  continue;
+
+	case R_RISCV_HI20:
+	case R_RISCV_BRANCH:
+	case R_RISCV_RVC_BRANCH:
+	case R_RISCV_RVC_LUI:
+	case R_RISCV_LO12_I:
+	case R_RISCV_LO12_S:
+	  /* These require no special handling beyond perform_relocation.  */
+	  break;
+
+	case R_RISCV_GOT_HI20:
+	  if (h != NULL)
+	    {
+	      bfd_boolean dyn, pic;
+
+	      off = h->got.offset;
+	      BFD_ASSERT (off != (bfd_vma) -1);
+	      dyn = elf_hash_table (info)->dynamic_sections_created;
+	      pic = bfd_link_pic (info);
+
+	      if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, pic, h)
+		  || (pic && SYMBOL_REFERENCES_LOCAL (info, h)))
+		{
+		  /* This is actually a static link, or it is a
+		     -Bsymbolic link and the symbol is defined
+		     locally, or the symbol was forced to be local
+		     because of a version file.  We must initialize
+		     this entry in the global offset table.  Since the
+		     offset must always be a multiple of the word size,
+		     we use the least significant bit to record whether
+		     we have initialized it already.
+
+		     When doing a dynamic link, we create a .rela.got
+		     relocation entry to initialize the value.  This
+		     is done in the finish_dynamic_symbol routine.  */
+		  if ((off & 1) != 0)
+		    off &= ~1;
+		  else
+		    {
+		      bfd_put_NN (output_bfd, relocation,
+				  htab->elf.sgot->contents + off);
+		      h->got.offset |= 1;
+		    }
+		}
+	      else
+		unresolved_reloc = FALSE;
+	    }
+	  else
+	    {
+	      BFD_ASSERT (local_got_offsets != NULL
+			  && local_got_offsets[r_symndx] != (bfd_vma) -1);
+
+	      off = local_got_offsets[r_symndx];
+
+	      /* The offset must always be a multiple of the word size.
+		 So, we can use the least significant bit to record
+		 whether we have already processed this entry.  */
+	      if ((off & 1) != 0)
+		off &= ~1;
+	      else
+		{
+		  if (bfd_link_pic (info))
+		    {
+		      asection *s;
+		      Elf_Internal_Rela outrel;
+
+		      /* We need to generate a R_RISCV_RELATIVE reloc
+			 for the dynamic linker.  */
+		      s = htab->elf.srelgot;
+		      BFD_ASSERT (s != NULL);
+
+		      outrel.r_offset = sec_addr (htab->elf.sgot) + off;
+		      outrel.r_info =
+			ELFNN_R_INFO (0, R_RISCV_RELATIVE);
+		      outrel.r_addend = relocation;
+		      relocation = 0;
+		      riscv_elf_append_rela (output_bfd, s, &outrel);
+		    }
+
+		  bfd_put_NN (output_bfd, relocation,
+			      htab->elf.sgot->contents + off);
+		  local_got_offsets[r_symndx] |= 1;
+		}
+	    }
+	  relocation = sec_addr (htab->elf.sgot) + off;
+	  if (!riscv_record_pcrel_hi_reloc (&pcrel_relocs, pc, relocation))
+	    r = bfd_reloc_overflow;
+	  break;
+
+	case R_RISCV_ADD8:
+	case R_RISCV_ADD16:
+	case R_RISCV_ADD32:
+	case R_RISCV_ADD64:
+	  {
+	    bfd_vma old_value = bfd_get (howto->bitsize, input_bfd,
+					 contents + rel->r_offset);
+	    relocation = old_value + relocation;
+	  }
+	  break;
+
+	case R_RISCV_SUB8:
+	case R_RISCV_SUB16:
+	case R_RISCV_SUB32:
+	case R_RISCV_SUB64:
+	  {
+	    bfd_vma old_value = bfd_get (howto->bitsize, input_bfd,
+					 contents + rel->r_offset);
+	    relocation = old_value - relocation;
+	  }
+	  break;
+
+	case R_RISCV_CALL_PLT:
+	case R_RISCV_CALL:
+	case R_RISCV_JAL:
+	case R_RISCV_RVC_JUMP:
+	  if (bfd_link_pic (info) && h != NULL && h->plt.offset != MINUS_ONE)
+	    {
+	      /* Refer to the PLT entry.  */
+	      relocation = sec_addr (htab->elf.splt) + h->plt.offset;
+	      unresolved_reloc = FALSE;
+	    }
+	  break;
+
+	case R_RISCV_TPREL_HI20:
+	  relocation = tpoff (info, relocation);
+	  break;
+
+	case R_RISCV_TPREL_LO12_I:
+	case R_RISCV_TPREL_LO12_S:
+	  relocation = tpoff (info, relocation);
+	  if (VALID_ITYPE_IMM (relocation + rel->r_addend))
+	    {
+	      /* We can use tp as the base register.  */
+	      bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+	      insn &= ~(OP_MASK_RS1 << OP_SH_RS1);
+	      insn |= X_TP << OP_SH_RS1;
+	      bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+	    }
+	  break;
+
+	case R_RISCV_GPREL_I:
+	case R_RISCV_GPREL_S:
+	  {
+	    bfd_vma gp = riscv_global_pointer_value (info);
+	    bfd_boolean x0_base = VALID_ITYPE_IMM (relocation + rel->r_addend);
+	    if (x0_base || VALID_ITYPE_IMM (relocation + rel->r_addend - gp))
+	      {
+		/* We can use x0 or gp as the base register.  */
+		bfd_vma insn = bfd_get_32 (input_bfd, contents + rel->r_offset);
+		insn &= ~(OP_MASK_RS1 << OP_SH_RS1);
+		if (!x0_base)
+		  {
+		    rel->r_addend -= gp;
+		    insn |= X_GP << OP_SH_RS1;
+		  }
+		bfd_put_32 (input_bfd, insn, contents + rel->r_offset);
+	      }
+	    else
+	      r = bfd_reloc_overflow;
+	    break;
+	  }
+
+	case R_RISCV_PCREL_HI20:
+	  if (!riscv_record_pcrel_hi_reloc (&pcrel_relocs, pc,
+					    relocation + rel->r_addend))
+	    r = bfd_reloc_overflow;
+	  break;
+
+	case R_RISCV_PCREL_LO12_I:
+	case R_RISCV_PCREL_LO12_S:
+	  if (riscv_record_pcrel_lo_reloc (&pcrel_relocs, input_section, info,
+					   howto, rel, relocation, name,
+					   contents))
+	    continue;
+	  r = bfd_reloc_overflow;
+	  break;
+
+	case R_RISCV_TLS_DTPREL32:
+	case R_RISCV_TLS_DTPREL64:
+	  relocation = dtpoff (info, relocation);
+	  break;
+
+	case R_RISCV_32:
+	case R_RISCV_64:
+	  if ((input_section->flags & SEC_ALLOC) == 0)
+	    break;
+
+	  if ((bfd_link_pic (info)
+	       && (h == NULL
+		   || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+		   || h->root.type != bfd_link_hash_undefweak)
+	       && (! howto->pc_relative
+		   || !SYMBOL_CALLS_LOCAL (info, h)))
+	      || (!bfd_link_pic (info)
+		  && h != NULL
+		  && h->dynindx != -1
+		  && !h->non_got_ref
+		  && ((h->def_dynamic
+		       && !h->def_regular)
+		      || h->root.type == bfd_link_hash_undefweak
+		      || h->root.type == bfd_link_hash_undefined)))
+	    {
+	      Elf_Internal_Rela outrel;
+	      bfd_boolean skip_static_relocation, skip_dynamic_relocation;
+
+	      /* When generating a shared object, these relocations
+		 are copied into the output file to be resolved at run
+		 time.  */
+
+	      outrel.r_offset =
+		_bfd_elf_section_offset (output_bfd, info, input_section,
+					 rel->r_offset);
+	      skip_static_relocation = outrel.r_offset != (bfd_vma) -2;
+	      skip_dynamic_relocation = outrel.r_offset >= (bfd_vma) -2;
+	      outrel.r_offset += sec_addr (input_section);
+
+	      if (skip_dynamic_relocation)
+		memset (&outrel, 0, sizeof outrel);
+	      else if (h != NULL && h->dynindx != -1
+		       && !(bfd_link_pic (info)
+			    && SYMBOLIC_BIND (info, h)
+			    && h->def_regular))
+		{
+		  outrel.r_info = ELFNN_R_INFO (h->dynindx, r_type);
+		  outrel.r_addend = rel->r_addend;
+		}
+	      else
+		{
+		  outrel.r_info = ELFNN_R_INFO (0, R_RISCV_RELATIVE);
+		  outrel.r_addend = relocation + rel->r_addend;
+		}
+
+	      riscv_elf_append_rela (output_bfd, sreloc, &outrel);
+	      if (skip_static_relocation)
+		continue;
+	    }
+	  break;
+
+	case R_RISCV_TLS_GOT_HI20:
+	  is_ie = TRUE;
+	  /* Fall through.  */
+
+	case R_RISCV_TLS_GD_HI20:
+	  if (h != NULL)
+	    {
+	      off = h->got.offset;
+	      h->got.offset |= 1;
+	    }
+	  else
+	    {
+	      off = local_got_offsets[r_symndx];
+	      local_got_offsets[r_symndx] |= 1;
+	    }
+
+	  tls_type = _bfd_riscv_elf_tls_type (input_bfd, h, r_symndx);
+	  BFD_ASSERT (tls_type & (GOT_TLS_IE | GOT_TLS_GD));
+	  /* If this symbol is referenced by both GD and IE TLS, the IE
+	     reference's GOT slot follows the GD reference's slots.  */
+	  ie_off = 0;
+	  if ((tls_type & GOT_TLS_GD) && (tls_type & GOT_TLS_IE))
+	    ie_off = 2 * GOT_ENTRY_SIZE;
+
+	  if ((off & 1) != 0)
+	    off &= ~1;
+	  else
+	    {
+	      Elf_Internal_Rela outrel;
+	      int indx = 0;
+	      bfd_boolean need_relocs = FALSE;
+
+	      if (htab->elf.srelgot == NULL)
+		abort ();
+
+	      if (h != NULL)
+		{
+		  bfd_boolean dyn, pic;
+		  dyn = htab->elf.dynamic_sections_created;
+		  pic = bfd_link_pic (info);
+
+		  if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, pic, h)
+		      && (!pic || !SYMBOL_REFERENCES_LOCAL (info, h)))
+		    indx = h->dynindx;
+		}
+
+	      /* The GOT entries have not been initialized yet.  Do it
+	         now, and emit any relocations.  */
+	      if ((bfd_link_pic (info) || indx != 0)
+		  && (h == NULL
+		      || ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
+		      || h->root.type != bfd_link_hash_undefweak))
+		    need_relocs = TRUE;
+
+	      if (tls_type & GOT_TLS_GD)
+		{
+		  if (need_relocs)
+		    {
+		      outrel.r_offset = sec_addr (htab->elf.sgot) + off;
+		      outrel.r_addend = 0;
+		      outrel.r_info = ELFNN_R_INFO (indx, R_RISCV_TLS_DTPMODNN);
+		      bfd_put_NN (output_bfd, 0,
+				  htab->elf.sgot->contents + off);
+		      riscv_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
+		      if (indx == 0)
+			{
+			  BFD_ASSERT (! unresolved_reloc);
+			  bfd_put_NN (output_bfd,
+				      dtpoff (info, relocation),
+				      (htab->elf.sgot->contents + off +
+				       RISCV_ELF_WORD_BYTES));
+			}
+		      else
+			{
+			  bfd_put_NN (output_bfd, 0,
+				      (htab->elf.sgot->contents + off +
+				       RISCV_ELF_WORD_BYTES));
+			  outrel.r_info = ELFNN_R_INFO (indx, R_RISCV_TLS_DTPRELNN);
+			  outrel.r_offset += RISCV_ELF_WORD_BYTES;
+			  riscv_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
+			}
+		    }
+		  else
+		    {
+		      /* If we are not emitting relocations for a
+			 general dynamic reference, then we must be in a
+			 static link or an executable link with the
+			 symbol binding locally.  Mark it as belonging
+			 to module 1, the executable.  */
+		      bfd_put_NN (output_bfd, 1,
+				  htab->elf.sgot->contents + off);
+		      bfd_put_NN (output_bfd,
+				  dtpoff (info, relocation),
+				  (htab->elf.sgot->contents + off +
+				   RISCV_ELF_WORD_BYTES));
+		   }
+		}
+
+	      if (tls_type & GOT_TLS_IE)
+		{
+		  if (need_relocs)
+		    {
+		      bfd_put_NN (output_bfd, 0,
+				  htab->elf.sgot->contents + off + ie_off);
+		      outrel.r_offset = sec_addr (htab->elf.sgot)
+				       + off + ie_off;
+		      outrel.r_addend = 0;
+		      if (indx == 0)
+			outrel.r_addend = tpoff (info, relocation);
+		      outrel.r_info = ELFNN_R_INFO (indx, R_RISCV_TLS_TPRELNN);
+		      riscv_elf_append_rela (output_bfd, htab->elf.srelgot, &outrel);
+		    }
+		  else
+		    {
+		      bfd_put_NN (output_bfd, tpoff (info, relocation),
+				  htab->elf.sgot->contents + off + ie_off);
+		    }
+		}
+	    }
+
+	  BFD_ASSERT (off < (bfd_vma) -2);
+	  relocation = sec_addr (htab->elf.sgot) + off + (is_ie ? ie_off : 0);
+	  if (!riscv_record_pcrel_hi_reloc (&pcrel_relocs, pc, relocation))
+	    r = bfd_reloc_overflow;
+	  unresolved_reloc = FALSE;
+	  break;
+
+	default:
+	  r = bfd_reloc_notsupported;
+	}
+
+      /* Dynamic relocs are not propagated for SEC_DEBUGGING sections
+	 because such sections are not SEC_ALLOC and thus ld.so will
+	 not process them.  */
+      if (unresolved_reloc
+	  && !((input_section->flags & SEC_DEBUGGING) != 0
+	       && h->def_dynamic)
+	  && _bfd_elf_section_offset (output_bfd, info, input_section,
+				      rel->r_offset) != (bfd_vma) -1)
+	{
+	  (*_bfd_error_handler)
+	    (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"),
+	     input_bfd,
+	     input_section,
+	     (long) rel->r_offset,
+	     howto->name,
+	     h->root.root.string);
+	  continue;
+	}
+
+      if (r == bfd_reloc_ok)
+	r = perform_relocation (howto, rel, relocation, input_section,
+				input_bfd, contents);
+
+      switch (r)
+	{
+	case bfd_reloc_ok:
+	  continue;
+
+	case bfd_reloc_overflow:
+	  info->callbacks->reloc_overflow
+	    (info, (h ? &h->root : NULL), name, howto->name,
+	     (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
+	  break;
+
+	case bfd_reloc_undefined:
+	  info->callbacks->undefined_symbol
+	    (info, name, input_bfd, input_section, rel->r_offset,
+	     TRUE);
+	  break;
+
+	case bfd_reloc_outofrange:
+	  msg = _("internal error: out of range error");
+	  break;
+
+	case bfd_reloc_notsupported:
+	  msg = _("internal error: unsupported relocation error");
+	  break;
+
+	case bfd_reloc_dangerous:
+	  msg = _("internal error: dangerous relocation");
+	  break;
+
+	default:
+	  msg = _("internal error: unknown error");
+	  break;
+	}
+
+      if (msg)
+	info->callbacks->warning
+	  (info, msg, name, input_bfd, input_section, rel->r_offset);
+      goto out;
+    }
+
+  ret = riscv_resolve_pcrel_lo_relocs (&pcrel_relocs);
+out:
+  riscv_free_pcrel_relocs (&pcrel_relocs);
+  return ret;
+}
+
+/* Finish up dynamic symbol handling.  We set the contents of various
+   dynamic sections here.  */
+
+static bfd_boolean
+riscv_elf_finish_dynamic_symbol (bfd *output_bfd,
+				 struct bfd_link_info *info,
+				 struct elf_link_hash_entry *h,
+				 Elf_Internal_Sym *sym)
+{
+  struct riscv_elf_link_hash_table *htab = riscv_elf_hash_table (info);
+  const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
+
+  if (h->plt.offset != (bfd_vma) -1)
+    {
+      /* We've decided to create a PLT entry for this symbol.  */
+      bfd_byte *loc;
+      bfd_vma i, header_address, plt_idx, got_address;
+      uint32_t plt_entry[PLT_ENTRY_INSNS];
+      Elf_Internal_Rela rela;
+
+      BFD_ASSERT (h->dynindx != -1);
+
+      /* Calculate the address of the PLT header.  */
+      header_address = sec_addr (htab->elf.splt);
+
+      /* Calculate the index of the entry.  */
+      plt_idx = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE;
+
+      /* Calculate the address of the .got.plt entry.  */
+      got_address = riscv_elf_got_plt_val (plt_idx, info);
+
+      /* Find out where the .plt entry should go.  */
+      loc = htab->elf.splt->contents + h->plt.offset;
+
+      /* Fill in the PLT entry itself.  */
+      riscv_make_plt_entry (got_address, header_address + h->plt.offset,
+			    plt_entry);
+      for (i = 0; i < PLT_ENTRY_INSNS; i++)
+	bfd_put_32 (output_bfd, plt_entry[i], loc + 4*i);
+
+      /* Fill in the initial value of the .got.plt entry.  */
+      loc = htab->elf.sgotplt->contents
+	    + (got_address - sec_addr (htab->elf.sgotplt));
+      bfd_put_NN (output_bfd, sec_addr (htab->elf.splt), loc);
+
+      /* Fill in the entry in the .rela.plt section.  */
+      rela.r_offset = got_address;
+      rela.r_addend = 0;
+      rela.r_info = ELFNN_R_INFO (h->dynindx, R_RISCV_JUMP_SLOT);
+
+      loc = htab->elf.srelplt->contents + plt_idx * sizeof (ElfNN_External_Rela);
+      bed->s->swap_reloca_out (output_bfd, &rela, loc);
+
+      if (!h->def_regular)
+	{
+	  /* Mark the symbol as undefined, rather than as defined in
+	     the .plt section.  Leave the value alone.  */
+	  sym->st_shndx = SHN_UNDEF;
+	  /* If the symbol is weak, we do need to clear the value.
+	     Otherwise, the PLT entry would provide a definition for
+	     the symbol even if the symbol wasn't defined anywhere,
+	     and so the symbol would never be NULL.  */
+	  if (!h->ref_regular_nonweak)
+	    sym->st_value = 0;
+	}
+    }
+
+  if (h->got.offset != (bfd_vma) -1
+      && !(riscv_elf_hash_entry(h)->tls_type & (GOT_TLS_GD | GOT_TLS_IE)))
+    {
+      asection *sgot;
+      asection *srela;
+      Elf_Internal_Rela rela;
+
+      /* This symbol has an entry in the GOT.  Set it up.  */
+
+      sgot = htab->elf.sgot;
+      srela = htab->elf.srelgot;
+      BFD_ASSERT (sgot != NULL && srela != NULL);
+
+      rela.r_offset = sec_addr (sgot) + (h->got.offset &~ (bfd_vma) 1);
+
+      /* If this is a -Bsymbolic link, and the symbol is defined
+	 locally, we just want to emit a RELATIVE reloc.  Likewise if
+	 the symbol was forced to be local because of a version file.
+	 The entry in the global offset table will already have been
+	 initialized in the relocate_section function.  */
+      if (bfd_link_pic (info)
+	  && (info->symbolic || h->dynindx == -1)
+	  && h->def_regular)
+	{
+	  asection *sec = h->root.u.def.section;
+	  rela.r_info = ELFNN_R_INFO (0, R_RISCV_RELATIVE);
+	  rela.r_addend = (h->root.u.def.value
+			   + sec->output_section->vma
+			   + sec->output_offset);
+	}
+      else
+	{
+	  BFD_ASSERT (h->dynindx != -1);
+	  rela.r_info = ELFNN_R_INFO (h->dynindx, R_RISCV_NN);
+	  rela.r_addend = 0;
+	}
+
+      bfd_put_NN (output_bfd, 0,
+		  sgot->contents + (h->got.offset & ~(bfd_vma) 1));
+      riscv_elf_append_rela (output_bfd, srela, &rela);
+    }
+
+  if (h->needs_copy)
+    {
+      Elf_Internal_Rela rela;
+
+      /* This symbols needs a copy reloc.  Set it up.  */
+      BFD_ASSERT (h->dynindx != -1);
+
+      rela.r_offset = sec_addr (h->root.u.def.section) + h->root.u.def.value;
+      rela.r_info = ELFNN_R_INFO (h->dynindx, R_RISCV_COPY);
+      rela.r_addend = 0;
+      riscv_elf_append_rela (output_bfd, htab->srelbss, &rela);
+    }
+
+  /* Mark some specially defined symbols as absolute.  */
+  if (h == htab->elf.hdynamic
+      || (h == htab->elf.hgot || h == htab->elf.hplt))
+    sym->st_shndx = SHN_ABS;
+
+  return TRUE;
+}
+
+/* Finish up the dynamic sections.  */
+
+static bfd_boolean
+riscv_finish_dyn (bfd *output_bfd, struct bfd_link_info *info,
+		  bfd *dynobj, asection *sdyn)
+{
+  struct riscv_elf_link_hash_table *htab = riscv_elf_hash_table (info);
+  const struct elf_backend_data *bed = get_elf_backend_data (output_bfd);
+  size_t dynsize = bed->s->sizeof_dyn;
+  bfd_byte *dyncon, *dynconend;
+
+  dynconend = sdyn->contents + sdyn->size;
+  for (dyncon = sdyn->contents; dyncon < dynconend; dyncon += dynsize)
+    {
+      Elf_Internal_Dyn dyn;
+      asection *s;
+
+      bed->s->swap_dyn_in (dynobj, dyncon, &dyn);
+
+      switch (dyn.d_tag)
+	{
+	case DT_PLTGOT:
+	  s = htab->elf.sgotplt;
+	  dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+	  break;
+	case DT_JMPREL:
+	  s = htab->elf.srelplt;
+	  dyn.d_un.d_ptr = s->output_section->vma + s->output_offset;
+	  break;
+	case DT_PLTRELSZ:
+	  s = htab->elf.srelplt;
+	  dyn.d_un.d_val = s->size;
+	  break;
+	default:
+	  continue;
+	}
+
+      bed->s->swap_dyn_out (output_bfd, &dyn, dyncon);
+    }
+  return TRUE;
+}
+
+static bfd_boolean
+riscv_elf_finish_dynamic_sections (bfd *output_bfd,
+				   struct bfd_link_info *info)
+{
+  bfd *dynobj;
+  asection *sdyn;
+  struct riscv_elf_link_hash_table *htab;
+
+  htab = riscv_elf_hash_table (info);
+  BFD_ASSERT (htab != NULL);
+  dynobj = htab->elf.dynobj;
+
+  sdyn = bfd_get_linker_section (dynobj, ".dynamic");
+
+  if (elf_hash_table (info)->dynamic_sections_created)
+    {
+      asection *splt;
+      bfd_boolean ret;
+
+      splt = htab->elf.splt;
+      BFD_ASSERT (splt != NULL && sdyn != NULL);
+
+      ret = riscv_finish_dyn (output_bfd, info, dynobj, sdyn);
+
+      if (ret != TRUE)
+	return ret;
+
+      /* Fill in the head and tail entries in the procedure linkage table.  */
+      if (splt->size > 0)
+	{
+	  int i;
+	  uint32_t plt_header[PLT_HEADER_INSNS];
+	  riscv_make_plt_header (sec_addr (htab->elf.sgotplt),
+				 sec_addr (splt), plt_header);
+
+	  for (i = 0; i < PLT_HEADER_INSNS; i++)
+	    bfd_put_32 (output_bfd, plt_header[i], splt->contents + 4*i);
+	}
+
+      elf_section_data (splt->output_section)->this_hdr.sh_entsize
+	= PLT_ENTRY_SIZE;
+    }
+
+  if (htab->elf.sgotplt)
+    {
+      asection *output_section = htab->elf.sgotplt->output_section;
+
+      if (bfd_is_abs_section (output_section))
+	{
+	  (*_bfd_error_handler)
+	    (_("discarded output section: `%A'"), htab->elf.sgotplt);
+	  return FALSE;
+	}
+
+      if (htab->elf.sgotplt->size > 0)
+	{
+	  /* Write the first two entries in .got.plt, needed for the dynamic
+	     linker.  */
+	  bfd_put_NN (output_bfd, (bfd_vma) -1, htab->elf.sgotplt->contents);
+	  bfd_put_NN (output_bfd, (bfd_vma) 0,
+		      htab->elf.sgotplt->contents + GOT_ENTRY_SIZE);
+	}
+
+      elf_section_data (output_section)->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
+    }
+
+  if (htab->elf.sgot)
+    {
+      asection *output_section = htab->elf.sgot->output_section;
+
+      if (htab->elf.sgot->size > 0)
+	{
+	  /* Set the first entry in the global offset table to the address of
+	     the dynamic section.  */
+	  bfd_vma val = sdyn ? sec_addr (sdyn) : 0;
+	  bfd_put_NN (output_bfd, val, htab->elf.sgot->contents);
+	}
+
+      elf_section_data (output_section)->this_hdr.sh_entsize = GOT_ENTRY_SIZE;
+    }
+
+  return TRUE;
+}
+
+/* Return address for Ith PLT stub in section PLT, for relocation REL
+   or (bfd_vma) -1 if it should not be included.  */
+
+static bfd_vma
+riscv_elf_plt_sym_val (bfd_vma i, const asection *plt,
+		       const arelent *rel ATTRIBUTE_UNUSED)
+{
+  return plt->vma + PLT_HEADER_SIZE + i * PLT_ENTRY_SIZE;
+}
+
+static enum elf_reloc_type_class
+riscv_reloc_type_class (const struct bfd_link_info *info ATTRIBUTE_UNUSED,
+			const asection *rel_sec ATTRIBUTE_UNUSED,
+			const Elf_Internal_Rela *rela)
+{
+  switch (ELFNN_R_TYPE (rela->r_info))
+    {
+    case R_RISCV_RELATIVE:
+      return reloc_class_relative;
+    case R_RISCV_JUMP_SLOT:
+      return reloc_class_plt;
+    case R_RISCV_COPY:
+      return reloc_class_copy;
+    default:
+      return reloc_class_normal;
+    }
+}
+
+/* Merge backend specific data from an object file to the output
+   object file when linking.  */
+
+static bfd_boolean
+_bfd_riscv_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd)
+{
+  flagword new_flags = elf_elfheader (ibfd)->e_flags;
+  flagword old_flags = elf_elfheader (obfd)->e_flags;
+
+  if (!is_riscv_elf (ibfd) || !is_riscv_elf (obfd))
+    return TRUE;
+
+  if (strcmp (bfd_get_target (ibfd), bfd_get_target (obfd)) != 0)
+    {
+      (*_bfd_error_handler)
+	(_("%B: ABI is incompatible with that of the selected emulation"),
+	 ibfd);
+      return FALSE;
+    }
+
+  if (!_bfd_elf_merge_object_attributes (ibfd, obfd))
+    return FALSE;
+
+  if (! elf_flags_init (obfd))
+    {
+      elf_flags_init (obfd) = TRUE;
+      elf_elfheader (obfd)->e_flags = new_flags;
+      return TRUE;
+    }
+
+  /* Disallow linking soft-float and hard-float.  */
+  if ((old_flags ^ new_flags) & EF_RISCV_SOFT_FLOAT)
+    {
+      (*_bfd_error_handler)
+	(_("%B: can't link hard-float modules with soft-float modules"), ibfd);
+      goto fail;
+    }
+
+  /* Allow linking RVC and non-RVC, and keep the RVC flag.  */
+  elf_elfheader (obfd)->e_flags |= new_flags & EF_RISCV_RVC;
+
+  return TRUE;
+
+fail:
+  bfd_set_error (bfd_error_bad_value);
+  return FALSE;
+}
+
+/* Delete some bytes from a section while relaxing.  */
+
+static bfd_boolean
+riscv_relax_delete_bytes (bfd *abfd, asection *sec, bfd_vma addr, size_t count)
+{
+  unsigned int i, symcount;
+  bfd_vma toaddr = sec->size;
+  struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (abfd);
+  Elf_Internal_Shdr *symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
+  unsigned int sec_shndx = _bfd_elf_section_from_bfd_section (abfd, sec);
+  struct bfd_elf_section_data *data = elf_section_data (sec);
+  bfd_byte *contents = data->this_hdr.contents;
+
+  /* Actually delete the bytes.  */
+  sec->size -= count;
+  memmove (contents + addr, contents + addr + count, toaddr - addr - count);
+
+  /* Adjust the location of all of the relocs.  Note that we need not
+     adjust the addends, since all PC-relative references must be against
+     symbols, which we will adjust below.  */
+  for (i = 0; i < sec->reloc_count; i++)
+    if (data->relocs[i].r_offset > addr && data->relocs[i].r_offset < toaddr)
+      data->relocs[i].r_offset -= count;
+
+  /* Adjust the local symbols defined in this section.  */
+  for (i = 0; i < symtab_hdr->sh_info; i++)
+    {
+      Elf_Internal_Sym *sym = (Elf_Internal_Sym *) symtab_hdr->contents + i;
+      if (sym->st_shndx == sec_shndx)
+	{
+	  /* If the symbol is in the range of memory we just moved, we
+	     have to adjust its value.  */
+	  if (sym->st_value > addr && sym->st_value <= toaddr)
+	    sym->st_value -= count;
+
+	  /* If the symbol *spans* the bytes we just deleted (i.e. its
+	     *end* is in the moved bytes but its *start* isn't), then we
+	     must adjust its size.  */
+	  if (sym->st_value <= addr
+	      && sym->st_value + sym->st_size > addr
+	      && sym->st_value + sym->st_size <= toaddr)
+	    sym->st_size -= count;
+	}
+    }
+
+  /* Now adjust the global symbols defined in this section.  */
+  symcount = ((symtab_hdr->sh_size / sizeof (ElfNN_External_Sym))
+	      - symtab_hdr->sh_info);
+
+  for (i = 0; i < symcount; i++)
+    {
+      struct elf_link_hash_entry *sym_hash = sym_hashes[i];
+
+      if ((sym_hash->root.type == bfd_link_hash_defined
+	   || sym_hash->root.type == bfd_link_hash_defweak)
+	  && sym_hash->root.u.def.section == sec)
+	{
+	  /* As above, adjust the value if needed.  */
+	  if (sym_hash->root.u.def.value > addr
+	      && sym_hash->root.u.def.value <= toaddr)
+	    sym_hash->root.u.def.value -= count;
+
+	  /* As above, adjust the size if needed.  */
+	  if (sym_hash->root.u.def.value <= addr
+	      && sym_hash->root.u.def.value + sym_hash->size > addr
+	      && sym_hash->root.u.def.value + sym_hash->size <= toaddr)
+	    sym_hash->size -= count;
+	}
+    }
+
+  return TRUE;
+}
+
+/* Relax AUIPC + JALR into JAL.  */
+
+static bfd_boolean
+_bfd_riscv_relax_call (bfd *abfd, asection *sec, asection *sym_sec,
+		       struct bfd_link_info *link_info,
+		       Elf_Internal_Rela *rel,
+		       bfd_vma symval,
+		       unsigned int max_alignment ATTRIBUTE_UNUSED,
+		       bfd_boolean *again)
+{
+  bfd_byte *contents = elf_section_data (sec)->this_hdr.contents;
+  bfd_signed_vma foff = symval - (sec_addr (sec) + rel->r_offset);
+  bfd_boolean near_zero = (symval + RISCV_IMM_REACH/2) < RISCV_IMM_REACH;
+  bfd_vma auipc, jalr;
+  int rd, r_type, len = 4, rvc = elf_elfheader (abfd)->e_flags & EF_RISCV_RVC;
+
+  /* If the call crosses section boundaries, an alignment directive could
+     cause the PC-relative offset to later increase.  Assume at most
+     page-alignment, and account for this by adding some slop.  */
+  if (VALID_UJTYPE_IMM (foff) && sym_sec->output_section != sec->output_section)
+    foff += (foff < 0 ? -ELF_MAXPAGESIZE : ELF_MAXPAGESIZE);
+
+  /* See if this function call can be shortened.  */
+  if (!VALID_UJTYPE_IMM (foff) && !(!bfd_link_pic (link_info) && near_zero))
+    return TRUE;
+
+  /* Shorten the function call.  */
+  BFD_ASSERT (rel->r_offset + 8 <= sec->size);
+
+  auipc = bfd_get_32 (abfd, contents + rel->r_offset);
+  jalr = bfd_get_32 (abfd, contents + rel->r_offset + 4);
+  rd = (jalr >> OP_SH_RD) & OP_MASK_RD;
+  rvc = rvc && VALID_RVC_J_IMM (foff) && ARCH_SIZE == 32;
+
+  if (rvc && (rd == 0 || rd == X_RA))
+    {
+      /* Relax to C.J[AL] rd, addr.  */
+      r_type = R_RISCV_RVC_JUMP;
+      auipc = rd == 0 ? MATCH_C_J : MATCH_C_JAL;
+      len = 2;
+    }
+  else if (VALID_UJTYPE_IMM (foff))
+    {
+      /* Relax to JAL rd, addr.  */
+      r_type = R_RISCV_JAL;
+      auipc = MATCH_JAL | (rd << OP_SH_RD);
+    }
+  else /* near_zero */
+    {
+      /* Relax to JALR rd, x0, addr.  */
+      r_type = R_RISCV_LO12_I;
+      auipc = MATCH_JALR | (rd << OP_SH_RD);
+    }
+
+  /* Replace the R_RISCV_CALL reloc.  */
+  rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), r_type);
+  /* Replace the AUIPC.  */
+  bfd_put (8 * len, abfd, auipc, contents + rel->r_offset);
+
+  /* Delete unnecessary JALR.  */
+  *again = TRUE;
+  return riscv_relax_delete_bytes (abfd, sec, rel->r_offset + len, 8 - len);
+}
+
+/* Traverse all output sections and return the max alignment.  */
+
+static unsigned int
+_bfd_riscv_get_max_alignment (asection *sec)
+{
+  unsigned int max_alignment_power = 0;
+  asection *o;
+
+  for (o = sec->output_section->owner->sections; o != NULL; o = o->next)
+    {
+      if (o->alignment_power > max_alignment_power)
+	max_alignment_power = o->alignment_power;
+    }
+
+  return 1 << max_alignment_power;
+}
+
+/* Relax non-PIC global variable references.  */
+
+static bfd_boolean
+_bfd_riscv_relax_lui (bfd *abfd, asection *sec, asection *sym_sec,
+		      struct bfd_link_info *link_info,
+		      Elf_Internal_Rela *rel,
+		      bfd_vma symval,
+		      unsigned int max_alignment,
+		      bfd_boolean *again)
+{
+  bfd_byte *contents = elf_section_data (sec)->this_hdr.contents;
+  bfd_vma gp = riscv_global_pointer_value (link_info);
+  int use_rvc = elf_elfheader (abfd)->e_flags & EF_RISCV_RVC;
+
+  /* Mergeable symbols and code might later move out of range.  */
+  if (sym_sec->flags & (SEC_MERGE | SEC_CODE))
+    return TRUE;
+
+  BFD_ASSERT (rel->r_offset + 4 <= sec->size);
+
+  /* Is the reference in range of x0 or gp?
+     Valid gp range conservatively because of alignment issue.  */
+  if (VALID_ITYPE_IMM (symval)
+      || (symval >= gp && VALID_ITYPE_IMM (symval - gp + max_alignment))
+      || (symval < gp && VALID_ITYPE_IMM (symval - gp - max_alignment)))
+    {
+      unsigned sym = ELFNN_R_SYM (rel->r_info);
+      switch (ELFNN_R_TYPE (rel->r_info))
+	{
+	case R_RISCV_LO12_I:
+	  rel->r_info = ELFNN_R_INFO (sym, R_RISCV_GPREL_I);
+	  return TRUE;
+
+	case R_RISCV_LO12_S:
+	  rel->r_info = ELFNN_R_INFO (sym, R_RISCV_GPREL_S);
+	  return TRUE;
+
+	case R_RISCV_HI20:
+	  /* We can delete the unnecessary LUI and reloc.  */
+	  rel->r_info = ELFNN_R_INFO (0, R_RISCV_NONE);
+	  *again = TRUE;
+	  return riscv_relax_delete_bytes (abfd, sec, rel->r_offset, 4);
+
+	default:
+	  abort ();
+	}
+    }
+
+  /* Can we relax LUI to C.LUI?  Alignment might move the section forward;
+     account for this assuming page alignment at worst.  */
+  if (use_rvc
+      && ELFNN_R_TYPE (rel->r_info) == R_RISCV_HI20
+      && VALID_RVC_LUI_IMM (RISCV_CONST_HIGH_PART (symval))
+      && VALID_RVC_LUI_IMM (RISCV_CONST_HIGH_PART (symval + ELF_MAXPAGESIZE)))
+    {
+      /* Replace LUI with C.LUI if legal (i.e., rd != x2/sp).  */
+      bfd_vma lui = bfd_get_32 (abfd, contents + rel->r_offset);
+      if (((lui >> OP_SH_RD) & OP_MASK_RD) == X_SP)
+	return TRUE;
+
+      lui = (lui & (OP_MASK_RD << OP_SH_RD)) | MATCH_C_LUI;
+      bfd_put_32 (abfd, lui, contents + rel->r_offset);
+
+      /* Replace the R_RISCV_HI20 reloc.  */
+      rel->r_info = ELFNN_R_INFO (ELFNN_R_SYM (rel->r_info), R_RISCV_RVC_LUI);
+
+      *again = TRUE;
+      return riscv_relax_delete_bytes (abfd, sec, rel->r_offset + 2, 2);
+    }
+
+  return TRUE;
+}
+
+/* Relax non-PIC TLS references.  */
+
+static bfd_boolean
+_bfd_riscv_relax_tls_le (bfd *abfd, asection *sec,
+			 asection *sym_sec ATTRIBUTE_UNUSED,
+			 struct bfd_link_info *link_info,
+			 Elf_Internal_Rela *rel,
+			 bfd_vma symval,
+			 unsigned int max_alignment ATTRIBUTE_UNUSED,
+			 bfd_boolean *again)
+{
+  /* See if this symbol is in range of tp.  */
+  if (RISCV_CONST_HIGH_PART (tpoff (link_info, symval)) != 0)
+    return TRUE;
+
+  /* We can delete the unnecessary LUI and tp add.  The LO12 reloc will be
+     made directly tp-relative.  */
+  BFD_ASSERT (rel->r_offset + 4 <= sec->size);
+  rel->r_info = ELFNN_R_INFO (0, R_RISCV_NONE);
+
+  *again = TRUE;
+  return riscv_relax_delete_bytes (abfd, sec, rel->r_offset, 4);
+}
+
+/* Implement R_RISCV_ALIGN by deleting excess alignment NOPs.  */
+
+static bfd_boolean
+_bfd_riscv_relax_align (bfd *abfd, asection *sec,
+			asection *sym_sec ATTRIBUTE_UNUSED,
+			struct bfd_link_info *link_info ATTRIBUTE_UNUSED,
+			Elf_Internal_Rela *rel,
+			bfd_vma symval,
+			unsigned int max_alignment ATTRIBUTE_UNUSED,
+			bfd_boolean *again ATTRIBUTE_UNUSED)
+{
+  bfd_byte *contents = elf_section_data (sec)->this_hdr.contents;
+  bfd_vma alignment = 1, pos;
+  while (alignment <= rel->r_addend)
+    alignment *= 2;
+
+  symval -= rel->r_addend;
+  bfd_vma aligned_addr = ((symval - 1) & ~(alignment - 1)) + alignment;
+  bfd_vma nop_bytes = aligned_addr - symval;
+
+  /* Once we've handled an R_RISCV_ALIGN, we can't relax anything else.  */
+  sec->sec_flg0 = TRUE;
+
+  /* Make sure there are enough NOPs to actually achieve the alignment.  */
+  if (rel->r_addend < nop_bytes)
+    return FALSE;
+
+  /* Delete the reloc.  */
+  rel->r_info = ELFNN_R_INFO (0, R_RISCV_NONE);
+
+  /* If the number of NOPs is already correct, there's nothing to do.  */
+  if (nop_bytes == rel->r_addend)
+    return TRUE;
+
+  /* Write as many RISC-V NOPs as we need.  */
+  for (pos = 0; pos < (nop_bytes & -4); pos += 4)
+    bfd_put_32 (abfd, RISCV_NOP, contents + rel->r_offset + pos);
+
+  /* Write a final RVC NOP if need be.  */
+  if (nop_bytes % 4 != 0)
+    bfd_put_16 (abfd, RVC_NOP, contents + rel->r_offset + pos);
+
+  /* Delete the excess bytes.  */
+  return riscv_relax_delete_bytes (abfd, sec, rel->r_offset + nop_bytes,
+				   rel->r_addend - nop_bytes);
+}
+
+/* Relax a section.  Pass 0 shortens code sequences unless disabled.
+   Pass 1, which cannot be disabled, handles code alignment directives.  */
+
+static bfd_boolean
+_bfd_riscv_relax_section (bfd *abfd, asection *sec,
+			  struct bfd_link_info *info, bfd_boolean *again)
+{
+  Elf_Internal_Shdr *symtab_hdr = &elf_symtab_hdr (abfd);
+  struct riscv_elf_link_hash_table *htab = riscv_elf_hash_table (info);
+  struct bfd_elf_section_data *data = elf_section_data (sec);
+  Elf_Internal_Rela *relocs;
+  bfd_boolean ret = FALSE;
+  unsigned int i;
+  unsigned int max_alignment;
+
+  *again = FALSE;
+
+  if (bfd_link_relocatable (info)
+      || sec->sec_flg0
+      || (sec->flags & SEC_RELOC) == 0
+      || sec->reloc_count == 0
+      || (info->disable_target_specific_optimizations
+	  && info->relax_pass == 0))
+    return TRUE;
+
+  /* Read this BFD's relocs if we haven't done so already.  */
+  if (data->relocs)
+    relocs = data->relocs;
+  else if (!(relocs = _bfd_elf_link_read_relocs (abfd, sec, NULL, NULL,
+						 info->keep_memory)))
+    goto fail;
+
+  max_alignment = _bfd_riscv_get_max_alignment (sec);
+
+  /* Examine and consider relaxing each reloc.  */
+  for (i = 0; i < sec->reloc_count; i++)
+    {
+      asection *sym_sec;
+      Elf_Internal_Rela *rel = relocs + i;
+      typeof (&_bfd_riscv_relax_call) relax_func = NULL;
+      int type = ELFNN_R_TYPE (rel->r_info);
+      bfd_vma symval;
+
+      if (info->relax_pass == 0)
+	{
+	  if (type == R_RISCV_CALL || type == R_RISCV_CALL_PLT)
+	    relax_func = _bfd_riscv_relax_call;
+	  else if (type == R_RISCV_HI20
+		   || type == R_RISCV_LO12_I
+		   || type == R_RISCV_LO12_S)
+	    relax_func = _bfd_riscv_relax_lui;
+	  else if (type == R_RISCV_TPREL_HI20 || type == R_RISCV_TPREL_ADD)
+	    relax_func = _bfd_riscv_relax_tls_le;
+	}
+      else if (type == R_RISCV_ALIGN)
+	relax_func = _bfd_riscv_relax_align;
+
+      if (!relax_func)
+	continue;
+
+      data->relocs = relocs;
+
+      /* Read this BFD's contents if we haven't done so already.  */
+      if (!data->this_hdr.contents
+	  && !bfd_malloc_and_get_section (abfd, sec, &data->this_hdr.contents))
+	goto fail;
+
+      /* Read this BFD's symbols if we haven't done so already.  */
+      if (symtab_hdr->sh_info != 0
+	  && !symtab_hdr->contents
+	  && !(symtab_hdr->contents =
+	       (unsigned char *) bfd_elf_get_elf_syms (abfd, symtab_hdr,
+						       symtab_hdr->sh_info,
+						       0, NULL, NULL, NULL)))
+	goto fail;
+
+      /* Get the value of the symbol referred to by the reloc.  */
+      if (ELFNN_R_SYM (rel->r_info) < symtab_hdr->sh_info)
+	{
+	  /* A local symbol.  */
+	  Elf_Internal_Sym *isym = ((Elf_Internal_Sym *) symtab_hdr->contents
+				    + ELFNN_R_SYM (rel->r_info));
+
+	  if (isym->st_shndx == SHN_UNDEF)
+	    sym_sec = sec, symval = sec_addr (sec) + rel->r_offset;
+	  else
+	    {
+	      BFD_ASSERT (isym->st_shndx < elf_numsections (abfd));
+	      sym_sec = elf_elfsections (abfd)[isym->st_shndx]->bfd_section;
+	      if (sec_addr (sym_sec) == 0)
+		continue;
+	      symval = sec_addr (sym_sec) + isym->st_value;
+	    }
+	}
+      else
+	{
+	  unsigned long indx;
+	  struct elf_link_hash_entry *h;
+
+	  indx = ELFNN_R_SYM (rel->r_info) - symtab_hdr->sh_info;
+	  h = elf_sym_hashes (abfd)[indx];
+
+	  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;
+
+	  if (h->plt.offset != MINUS_ONE)
+	    symval = sec_addr (htab->elf.splt) + h->plt.offset;
+	  else if (h->root.u.def.section->output_section == NULL
+		   || (h->root.type != bfd_link_hash_defined
+		       && h->root.type != bfd_link_hash_defweak))
+	    continue;
+	  else
+	    symval = sec_addr (h->root.u.def.section) + h->root.u.def.value;
+
+	  sym_sec = h->root.u.def.section;
+	}
+
+      symval += rel->r_addend;
+
+      if (!relax_func (abfd, sec, sym_sec, info, rel, symval,
+		       max_alignment, again))
+	goto fail;
+    }
+
+  ret = TRUE;
+
+fail:
+  if (relocs != data->relocs)
+    free (relocs);
+
+  return ret;
+}
+
+#if ARCH_SIZE == 32
+# define PRSTATUS_SIZE			0 /* FIXME */
+# define PRSTATUS_OFFSET_PR_CURSIG	12
+# define PRSTATUS_OFFSET_PR_PID		24
+# define PRSTATUS_OFFSET_PR_REG		72
+# define ELF_GREGSET_T_SIZE		128
+# define PRPSINFO_SIZE			128
+# define PRPSINFO_OFFSET_PR_PID		16
+# define PRPSINFO_OFFSET_PR_FNAME	32
+# define PRPSINFO_OFFSET_PR_PSARGS	48
+#else
+# define PRSTATUS_SIZE			376
+# define PRSTATUS_OFFSET_PR_CURSIG	12
+# define PRSTATUS_OFFSET_PR_PID		32
+# define PRSTATUS_OFFSET_PR_REG		112
+# define ELF_GREGSET_T_SIZE		256
+# define PRPSINFO_SIZE			136
+# define PRPSINFO_OFFSET_PR_PID		24
+# define PRPSINFO_OFFSET_PR_FNAME	40
+# define PRPSINFO_OFFSET_PR_PSARGS	56
+#endif
+
+/* Support for core dump NOTE sections.  */
+
+static bfd_boolean
+riscv_elf_grok_prstatus (bfd *abfd, Elf_Internal_Note *note)
+{
+  switch (note->descsz)
+    {
+      default:
+	return FALSE;
+
+      case PRSTATUS_SIZE:  /* sizeof(struct elf_prstatus) on Linux/RISC-V.  */
+	/* pr_cursig */
+	elf_tdata (abfd)->core->signal
+	  = bfd_get_16 (abfd, note->descdata + PRSTATUS_OFFSET_PR_CURSIG);
+
+	/* pr_pid */
+	elf_tdata (abfd)->core->lwpid
+	  = bfd_get_32 (abfd, note->descdata + PRSTATUS_OFFSET_PR_PID);
+	break;
+    }
+
+  /* Make a ".reg/999" section.  */
+  return _bfd_elfcore_make_pseudosection (abfd, ".reg", ELF_GREGSET_T_SIZE,
+					  note->descpos + PRSTATUS_OFFSET_PR_REG);
+}
+
+static bfd_boolean
+riscv_elf_grok_psinfo (bfd *abfd, Elf_Internal_Note *note)
+{
+  switch (note->descsz)
+    {
+      default:
+	return FALSE;
+
+      case PRPSINFO_SIZE: /* sizeof(struct elf_prpsinfo) on Linux/RISC-V.  */
+	/* pr_pid */
+	elf_tdata (abfd)->core->pid
+	  = bfd_get_32 (abfd, note->descdata + PRPSINFO_OFFSET_PR_PID);
+
+	/* pr_fname */
+	elf_tdata (abfd)->core->program = _bfd_elfcore_strndup
+	  (abfd, note->descdata + PRPSINFO_OFFSET_PR_FNAME, 16);
+
+	/* pr_psargs */
+	elf_tdata (abfd)->core->command = _bfd_elfcore_strndup
+	  (abfd, note->descdata + PRPSINFO_OFFSET_PR_PSARGS, 80);
+	break;
+    }
+
+  /* Note that for some reason, a spurious space is tacked
+     onto the end of the args in some (at least one anyway)
+     implementations, so strip it off if it exists.  */
+
+  {
+    char *command = elf_tdata (abfd)->core->command;
+    int n = strlen (command);
+
+    if (0 < n && command[n - 1] == ' ')
+      command[n - 1] = '\0';
+  }
+
+  return TRUE;
+}
+
+
+#define TARGET_LITTLE_SYM		riscv_elfNN_vec
+#define TARGET_LITTLE_NAME		"elfNN-littleriscv"
+
+#define elf_backend_reloc_type_class	     riscv_reloc_type_class
+
+#define bfd_elfNN_bfd_reloc_name_lookup	     riscv_reloc_name_lookup
+#define bfd_elfNN_bfd_link_hash_table_create riscv_elf_link_hash_table_create
+#define bfd_elfNN_bfd_reloc_type_lookup	     riscv_reloc_type_lookup
+#define bfd_elfNN_bfd_merge_private_bfd_data \
+  _bfd_riscv_elf_merge_private_bfd_data
+
+#define elf_backend_copy_indirect_symbol     riscv_elf_copy_indirect_symbol
+#define elf_backend_create_dynamic_sections  riscv_elf_create_dynamic_sections
+#define elf_backend_check_relocs	     riscv_elf_check_relocs
+#define elf_backend_adjust_dynamic_symbol    riscv_elf_adjust_dynamic_symbol
+#define elf_backend_size_dynamic_sections    riscv_elf_size_dynamic_sections
+#define elf_backend_relocate_section	     riscv_elf_relocate_section
+#define elf_backend_finish_dynamic_symbol    riscv_elf_finish_dynamic_symbol
+#define elf_backend_finish_dynamic_sections  riscv_elf_finish_dynamic_sections
+#define elf_backend_gc_mark_hook	     riscv_elf_gc_mark_hook
+#define elf_backend_gc_sweep_hook	     riscv_elf_gc_sweep_hook
+#define elf_backend_plt_sym_val		     riscv_elf_plt_sym_val
+#define elf_backend_grok_prstatus            riscv_elf_grok_prstatus
+#define elf_backend_grok_psinfo              riscv_elf_grok_psinfo
+#define elf_info_to_howto_rel		     NULL
+#define elf_info_to_howto		     riscv_info_to_howto_rela
+#define bfd_elfNN_bfd_relax_section	     _bfd_riscv_relax_section
+
+#define elf_backend_init_index_section	     _bfd_elf_init_1_index_section
+
+#define elf_backend_can_gc_sections	1
+#define elf_backend_can_refcount	1
+#define elf_backend_want_got_plt	1
+#define elf_backend_plt_readonly	1
+#define elf_backend_plt_alignment	4
+#define elf_backend_want_plt_sym	1
+#define elf_backend_got_header_size	(ARCH_SIZE / 8)
+#define elf_backend_rela_normal		1
+#define elf_backend_default_execstack	0
+
+#include "elfNN-target.h"
diff --git a/bfd/elfxx-riscv.c b/bfd/elfxx-riscv.c
new file mode 100644
index 0000000..18d2b1d
--- /dev/null
+++ b/bfd/elfxx-riscv.c
@@ -0,0 +1,814 @@
+/* RISC-V-specific support for ELF.
+   Copyright 2011-2015 Free Software Foundation, Inc.
+
+   Contributed by Andrew Waterman (andrew@sifive.com).
+   Based on TILE-Gx and MIPS targets.
+
+   This file is part of BFD, the Binary File Descriptor library.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; see the file COPYING3. If not,
+   see <http://www.gnu.org/licenses/>.  */
+
+#include "sysdep.h"
+#include "bfd.h"
+#include "libbfd.h"
+#include "elf-bfd.h"
+#include "elf/riscv.h"
+#include "opcode/riscv.h"
+#include "libiberty.h"
+#include "elfxx-riscv.h"
+#include <stdint.h>
+
+#define MINUS_ONE ((bfd_vma)0 - 1)
+
+/* The relocation table used for SHT_RELA sections.  */
+
+static reloc_howto_type howto_table[] =
+{
+  /* No relocation.  */
+  HOWTO (R_RISCV_NONE,			/* type */
+	 0,				/* rightshift */
+	 3,				/* size */
+	 0,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_NONE",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 0,				/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* 32 bit relocation.  */
+  HOWTO (R_RISCV_32,			/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_32",			/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 0xffffffff,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* 64 bit relocation.  */
+  HOWTO (R_RISCV_64,			/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 64,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_64",			/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* Relocation against a local symbol in a shared object.  */
+  HOWTO (R_RISCV_RELATIVE,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_RELATIVE",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 0xffffffff,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  HOWTO (R_RISCV_COPY,			/* type */
+	 0,				/* rightshift */
+	 0,				/* this one is variable size */
+	 0,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_bitfield,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_COPY",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0x0,         			/* src_mask */
+	 0x0,		        	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  HOWTO (R_RISCV_JUMP_SLOT,		/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 64,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_bitfield,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_JUMP_SLOT",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0x0,         			/* src_mask */
+	 0x0,		        	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* Dynamic TLS relocations.  */
+  HOWTO (R_RISCV_TLS_DTPMOD32,		/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc, 	/* special_function */
+	 "R_RISCV_TLS_DTPMOD32",	/* name */
+	 FALSE,				/* partial_inplace */
+	 MINUS_ONE,			/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  HOWTO (R_RISCV_TLS_DTPMOD64,		/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 64,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc, 	/* special_function */
+	 "R_RISCV_TLS_DTPMOD64",	/* name */
+	 FALSE,				/* partial_inplace */
+	 MINUS_ONE,			/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  HOWTO (R_RISCV_TLS_DTPREL32,		/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc, 	/* special_function */
+	 "R_RISCV_TLS_DTPREL32",	/* name */
+	 TRUE,				/* partial_inplace */
+	 MINUS_ONE,			/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  HOWTO (R_RISCV_TLS_DTPREL64,		/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 64,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc, 	/* special_function */
+	 "R_RISCV_TLS_DTPREL64",	/* name */
+	 TRUE,				/* partial_inplace */
+	 MINUS_ONE,			/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  HOWTO (R_RISCV_TLS_TPREL32,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc, 	/* special_function */
+	 "R_RISCV_TLS_TPREL32",		/* name */
+	 FALSE,				/* partial_inplace */
+	 MINUS_ONE,			/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  HOWTO (R_RISCV_TLS_TPREL64,		/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 64,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc, 	/* special_function */
+	 "R_RISCV_TLS_TPREL64",		/* name */
+	 FALSE,				/* partial_inplace */
+	 MINUS_ONE,			/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* Reserved for future relocs that the dynamic linker must understand.  */
+  EMPTY_HOWTO (12),
+  EMPTY_HOWTO (13),
+  EMPTY_HOWTO (14),
+  EMPTY_HOWTO (15),
+
+  /* 12-bit PC-relative branch offset.  */
+  HOWTO (R_RISCV_BRANCH,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 TRUE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_signed,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_BRANCH",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_SBTYPE_IMM (-1U),	/* dst_mask */
+	 TRUE),				/* pcrel_offset */
+
+  /* 20-bit PC-relative jump offset.  */
+  HOWTO (R_RISCV_JAL,			/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 TRUE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+					/* This needs complex overflow
+					   detection, because the upper 36
+					   bits must match the PC + 4.  */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_JAL",			/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_UJTYPE_IMM (-1U),	/* dst_mask */
+	 TRUE),				/* pcrel_offset */
+
+  /* 32-bit PC-relative function call (AUIPC/JALR).  */
+  HOWTO (R_RISCV_CALL,			/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 64,				/* bitsize */
+	 TRUE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_CALL",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32),
+					/* dst_mask */
+	 TRUE),				/* pcrel_offset */
+
+  /* 32-bit PC-relative function call (AUIPC/JALR).  */
+  HOWTO (R_RISCV_CALL_PLT,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 64,				/* bitsize */
+	 TRUE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_CALL_PLT",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_UTYPE_IMM (-1U) | ((bfd_vma) ENCODE_ITYPE_IMM (-1U) << 32),
+					/* dst_mask */
+	 TRUE),				/* pcrel_offset */
+
+  /* High 20 bits of 32-bit PC-relative GOT access.  */
+  HOWTO (R_RISCV_GOT_HI20,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 TRUE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_GOT_HI20",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_UTYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* High 20 bits of 32-bit PC-relative TLS IE GOT access.  */
+  HOWTO (R_RISCV_TLS_GOT_HI20,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 TRUE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_TLS_GOT_HI20",	/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_UTYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* High 20 bits of 32-bit PC-relative TLS GD GOT reference.  */
+  HOWTO (R_RISCV_TLS_GD_HI20,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 TRUE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_TLS_GD_HI20",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_UTYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* High 20 bits of 32-bit PC-relative reference.  */
+  HOWTO (R_RISCV_PCREL_HI20,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 TRUE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_PCREL_HI20",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_UTYPE_IMM (-1U),	/* dst_mask */
+	 TRUE),				/* pcrel_offset */
+
+  /* Low 12 bits of a 32-bit PC-relative load or add.  */
+  HOWTO (R_RISCV_PCREL_LO12_I,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_PCREL_LO12_I",	/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_ITYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* Low 12 bits of a 32-bit PC-relative store.  */
+  HOWTO (R_RISCV_PCREL_LO12_S,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_PCREL_LO12_S",	/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_STYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* High 20 bits of 32-bit absolute address.  */
+  HOWTO (R_RISCV_HI20,			/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_HI20",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_UTYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* High 12 bits of 32-bit load or add.  */
+  HOWTO (R_RISCV_LO12_I,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_LO12_I",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_ITYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* High 12 bits of 32-bit store.  */
+  HOWTO (R_RISCV_LO12_S,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_LO12_S",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_STYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* High 20 bits of TLS LE thread pointer offset.  */
+  HOWTO (R_RISCV_TPREL_HI20,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_signed,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_TPREL_HI20",		/* name */
+	 TRUE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_UTYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* Low 12 bits of TLS LE thread pointer offset for loads and adds.  */
+  HOWTO (R_RISCV_TPREL_LO12_I,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_signed,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_TPREL_LO12_I",	/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_ITYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* Low 12 bits of TLS LE thread pointer offset for stores.  */
+  HOWTO (R_RISCV_TPREL_LO12_S,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_signed,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_TPREL_LO12_S",	/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_STYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* TLS LE thread pointer usage.  */
+  HOWTO (R_RISCV_TPREL_ADD,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_TPREL_ADD",		/* name */
+	 TRUE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 0,				/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* 8-bit in-place addition, for local label subtraction.  */
+  HOWTO (R_RISCV_ADD8,			/* type */
+	 0,				/* rightshift */
+	 0,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_ADD8",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* 16-bit in-place addition, for local label subtraction.  */
+  HOWTO (R_RISCV_ADD16,			/* type */
+	 0,				/* rightshift */
+	 1,				/* size */
+	 16,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_ADD16",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* 32-bit in-place addition, for local label subtraction.  */
+  HOWTO (R_RISCV_ADD32,			/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_ADD32",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* 64-bit in-place addition, for local label subtraction.  */
+  HOWTO (R_RISCV_ADD64,			/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 64,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_ADD64",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* 8-bit in-place addition, for local label subtraction.  */
+  HOWTO (R_RISCV_SUB8,			/* type */
+	 0,				/* rightshift */
+	 0,				/* size */
+	 8,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_SUB8",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* 16-bit in-place addition, for local label subtraction.  */
+  HOWTO (R_RISCV_SUB16,			/* type */
+	 0,				/* rightshift */
+	 1,				/* size */
+	 16,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_SUB16",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* 32-bit in-place addition, for local label subtraction.  */
+  HOWTO (R_RISCV_SUB32,			/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_SUB32",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* 64-bit in-place addition, for local label subtraction.  */
+  HOWTO (R_RISCV_SUB64,			/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 64,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_SUB64",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 MINUS_ONE,			/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* GNU extension to record C++ vtable hierarchy */
+  HOWTO (R_RISCV_GNU_VTINHERIT,		/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 0,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 NULL,				/* special_function */
+	 "R_RISCV_GNU_VTINHERIT",	/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 0,				/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* GNU extension to record C++ vtable member usage */
+  HOWTO (R_RISCV_GNU_VTENTRY,		/* type */
+	 0,				/* rightshift */
+	 4,				/* size */
+	 0,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 _bfd_elf_rel_vtable_reloc_fn,	/* special_function */
+	 "R_RISCV_GNU_VTENTRY",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 0,				/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* Indicates an alignment statement.  The addend field encodes how many
+     bytes of NOPs follow the statement.  The desired alignment is the
+     addend rounded up to the next power of two.  */
+  HOWTO (R_RISCV_ALIGN,			/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 0,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_ALIGN",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 0,				/* dst_mask */
+	 TRUE),				/* pcrel_offset */
+
+  /* 8-bit PC-relative branch offset.  */
+  HOWTO (R_RISCV_RVC_BRANCH,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 TRUE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_signed,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_RVC_BRANCH",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_RVC_B_IMM (-1U),	/* dst_mask */
+	 TRUE),				/* pcrel_offset */
+
+  /* 11-bit PC-relative jump offset.  */
+  HOWTO (R_RISCV_RVC_JUMP,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 TRUE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+					/* This needs complex overflow
+					   detection, because the upper 36
+					   bits must match the PC + 4.  */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_RVC_JUMP",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_RVC_J_IMM (-1U),	/* dst_mask */
+	 TRUE),				/* pcrel_offset */
+
+  /* High 6 bits of 18-bit absolute address.  */
+  HOWTO (R_RISCV_RVC_LUI,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_RVC_LUI",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_RVC_IMM (-1U),		/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* High 12 bits of 32-bit load or add.  */
+  HOWTO (R_RISCV_GPREL_I,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_GPREL_I",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_ITYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+
+  /* High 12 bits of 32-bit store.  */
+  HOWTO (R_RISCV_GPREL_S,		/* type */
+	 0,				/* rightshift */
+	 2,				/* size */
+	 32,				/* bitsize */
+	 FALSE,				/* pc_relative */
+	 0,				/* bitpos */
+	 complain_overflow_dont,	/* complain_on_overflow */
+	 bfd_elf_generic_reloc,		/* special_function */
+	 "R_RISCV_GPREL_S",		/* name */
+	 FALSE,				/* partial_inplace */
+	 0,				/* src_mask */
+	 ENCODE_STYPE_IMM (-1U),	/* dst_mask */
+	 FALSE),			/* pcrel_offset */
+};
+
+/* A mapping from BFD reloc types to RISC-V ELF reloc types.  */
+
+struct elf_reloc_map {
+  bfd_reloc_code_real_type bfd_val;
+  enum elf_riscv_reloc_type elf_val;
+};
+
+static const struct elf_reloc_map riscv_reloc_map[] =
+{
+  { BFD_RELOC_NONE, R_RISCV_NONE },
+  { BFD_RELOC_32, R_RISCV_32 },
+  { BFD_RELOC_64, R_RISCV_64 },
+  { BFD_RELOC_RISCV_ADD8, R_RISCV_ADD8 },
+  { BFD_RELOC_RISCV_ADD16, R_RISCV_ADD16 },
+  { BFD_RELOC_RISCV_ADD32, R_RISCV_ADD32 },
+  { BFD_RELOC_RISCV_ADD64, R_RISCV_ADD64 },
+  { BFD_RELOC_RISCV_SUB8, R_RISCV_SUB8 },
+  { BFD_RELOC_RISCV_SUB16, R_RISCV_SUB16 },
+  { BFD_RELOC_RISCV_SUB32, R_RISCV_SUB32 },
+  { BFD_RELOC_RISCV_SUB64, R_RISCV_SUB64 },
+  { BFD_RELOC_CTOR, R_RISCV_64 },
+  { BFD_RELOC_12_PCREL, R_RISCV_BRANCH },
+  { BFD_RELOC_RISCV_HI20, R_RISCV_HI20 },
+  { BFD_RELOC_RISCV_LO12_I, R_RISCV_LO12_I },
+  { BFD_RELOC_RISCV_LO12_S, R_RISCV_LO12_S },
+  { BFD_RELOC_RISCV_PCREL_LO12_I, R_RISCV_PCREL_LO12_I },
+  { BFD_RELOC_RISCV_PCREL_LO12_S, R_RISCV_PCREL_LO12_S },
+  { BFD_RELOC_RISCV_CALL, R_RISCV_CALL },
+  { BFD_RELOC_RISCV_CALL_PLT, R_RISCV_CALL_PLT },
+  { BFD_RELOC_RISCV_PCREL_HI20, R_RISCV_PCREL_HI20 },
+  { BFD_RELOC_RISCV_JMP, R_RISCV_JAL },
+  { BFD_RELOC_RISCV_GOT_HI20, R_RISCV_GOT_HI20 },
+  { BFD_RELOC_RISCV_TLS_DTPMOD32, R_RISCV_TLS_DTPMOD32 },
+  { BFD_RELOC_RISCV_TLS_DTPREL32, R_RISCV_TLS_DTPREL32 },
+  { BFD_RELOC_RISCV_TLS_DTPMOD64, R_RISCV_TLS_DTPMOD64 },
+  { BFD_RELOC_RISCV_TLS_DTPREL64, R_RISCV_TLS_DTPREL64 },
+  { BFD_RELOC_RISCV_TLS_TPREL32, R_RISCV_TLS_TPREL32 },
+  { BFD_RELOC_RISCV_TLS_TPREL64, R_RISCV_TLS_TPREL64 },
+  { BFD_RELOC_RISCV_TPREL_HI20, R_RISCV_TPREL_HI20 },
+  { BFD_RELOC_RISCV_TPREL_ADD, R_RISCV_TPREL_ADD },
+  { BFD_RELOC_RISCV_TPREL_LO12_S, R_RISCV_TPREL_LO12_S },
+  { BFD_RELOC_RISCV_TPREL_LO12_I, R_RISCV_TPREL_LO12_I },
+  { BFD_RELOC_RISCV_TLS_GOT_HI20, R_RISCV_TLS_GOT_HI20 },
+  { BFD_RELOC_RISCV_TLS_GD_HI20, R_RISCV_TLS_GD_HI20 },
+  { BFD_RELOC_RISCV_ALIGN, R_RISCV_ALIGN },
+  { BFD_RELOC_RISCV_RVC_BRANCH, R_RISCV_RVC_BRANCH },
+  { BFD_RELOC_RISCV_RVC_JUMP, R_RISCV_RVC_JUMP },
+  { BFD_RELOC_RISCV_RVC_LUI, R_RISCV_RVC_LUI },
+  { BFD_RELOC_RISCV_GPREL_I, R_RISCV_GPREL_I },
+  { BFD_RELOC_RISCV_GPREL_S, R_RISCV_GPREL_S },
+};
+
+/* Given a BFD reloc type, return a howto structure.  */
+
+reloc_howto_type *
+riscv_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED,
+			 bfd_reloc_code_real_type code)
+{
+  unsigned int i;
+
+  for (i = 0; i < ARRAY_SIZE (riscv_reloc_map); i++)
+    if (riscv_reloc_map[i].bfd_val == code)
+      return &howto_table[(int) riscv_reloc_map[i].elf_val];
+
+  bfd_set_error (bfd_error_bad_value);
+  return NULL;
+}
+
+reloc_howto_type *
+riscv_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
+{
+  unsigned int i;
+
+  for (i = 0; i < ARRAY_SIZE (howto_table); i++)
+    if (howto_table[i].name && strcasecmp (howto_table[i].name, r_name) == 0)
+      return &howto_table[i];
+
+  return NULL;
+}
+
+reloc_howto_type *
+riscv_elf_rtype_to_howto (unsigned int r_type)
+{
+  if (r_type >= ARRAY_SIZE (howto_table))
+    {
+      (*_bfd_error_handler) (_("unrecognized relocation (0x%x)"), r_type);
+      bfd_set_error (bfd_error_bad_value);
+      return NULL;
+    }
+  return &howto_table[r_type];
+}
diff --git a/bfd/elfxx-riscv.h b/bfd/elfxx-riscv.h
new file mode 100644
index 0000000..9e14150
--- /dev/null
+++ b/bfd/elfxx-riscv.h
@@ -0,0 +1,33 @@
+/* RISC-V ELF specific backend routines.
+   Copyright 2011-2015 Free Software Foundation, Inc.
+
+   Contributed by Andrew Waterman (andrew@sifive.com).
+   Based on MIPS target.
+
+   This file is part of BFD, the Binary File Descriptor library.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; see the file COPYING3. If not,
+   see <http://www.gnu.org/licenses/>.  */
+
+#include "elf/common.h"
+#include "elf/internal.h"
+
+extern reloc_howto_type *
+riscv_reloc_name_lookup (bfd *, const char *);
+
+extern reloc_howto_type *
+riscv_reloc_type_lookup (bfd *, bfd_reloc_code_real_type);
+
+extern reloc_howto_type *
+riscv_elf_rtype_to_howto (unsigned int r_type);
diff --git a/include/elf/riscv.h b/include/elf/riscv.h
new file mode 100644
index 0000000..d842876
--- /dev/null
+++ b/include/elf/riscv.h
@@ -0,0 +1,92 @@
+/* RISC-V ELF support for BFD.
+   Copyright 2011-2015 Free Software Foundation, Inc.
+
+   Contributed by Andrew Waterman (andrew@sifive.com).
+   Based on MIPS ELF support for BFD, by Ian Lance Taylor.
+
+   This file is part of BFD, the Binary File Descriptor library.
+
+   This program is free software; you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation; either version 3 of the License, or
+   (at your option) any later version.
+
+   This program is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with this program; see the file COPYING3. If not,
+   see <http://www.gnu.org/licenses/>.  */
+
+/* This file holds definitions specific to the RISCV ELF ABI.  Note
+   that most of this is not actually implemented by BFD.  */
+
+#ifndef _ELF_RISCV_H
+#define _ELF_RISCV_H
+
+#include "elf/reloc-macros.h"
+#include "libiberty.h"
+
+/* Relocation types.  */
+START_RELOC_NUMBERS (elf_riscv_reloc_type)
+  /* Relocation types used by the dynamic linker.  */
+  RELOC_NUMBER (R_RISCV_NONE, 0)
+  RELOC_NUMBER (R_RISCV_32, 1)
+  RELOC_NUMBER (R_RISCV_64, 2)
+  RELOC_NUMBER (R_RISCV_RELATIVE, 3)
+  RELOC_NUMBER (R_RISCV_COPY, 4)
+  RELOC_NUMBER (R_RISCV_JUMP_SLOT, 5)
+  RELOC_NUMBER (R_RISCV_TLS_DTPMOD32, 6)
+  RELOC_NUMBER (R_RISCV_TLS_DTPMOD64, 7)
+  RELOC_NUMBER (R_RISCV_TLS_DTPREL32, 8)
+  RELOC_NUMBER (R_RISCV_TLS_DTPREL64, 9)
+  RELOC_NUMBER (R_RISCV_TLS_TPREL32, 10)
+  RELOC_NUMBER (R_RISCV_TLS_TPREL64, 11)
+
+  /* Relocation types not used by the dynamic linker.  */
+  RELOC_NUMBER (R_RISCV_BRANCH, 16)
+  RELOC_NUMBER (R_RISCV_JAL, 17)
+  RELOC_NUMBER (R_RISCV_CALL, 18)
+  RELOC_NUMBER (R_RISCV_CALL_PLT, 19)
+  RELOC_NUMBER (R_RISCV_GOT_HI20, 20)
+  RELOC_NUMBER (R_RISCV_TLS_GOT_HI20, 21)
+  RELOC_NUMBER (R_RISCV_TLS_GD_HI20, 22)
+  RELOC_NUMBER (R_RISCV_PCREL_HI20, 23)
+  RELOC_NUMBER (R_RISCV_PCREL_LO12_I, 24)
+  RELOC_NUMBER (R_RISCV_PCREL_LO12_S, 25)
+  RELOC_NUMBER (R_RISCV_HI20, 26)
+  RELOC_NUMBER (R_RISCV_LO12_I, 27)
+  RELOC_NUMBER (R_RISCV_LO12_S, 28)
+  RELOC_NUMBER (R_RISCV_TPREL_HI20, 29)
+  RELOC_NUMBER (R_RISCV_TPREL_LO12_I, 30)
+  RELOC_NUMBER (R_RISCV_TPREL_LO12_S, 31)
+  RELOC_NUMBER (R_RISCV_TPREL_ADD, 32)
+  RELOC_NUMBER (R_RISCV_ADD8, 33)
+  RELOC_NUMBER (R_RISCV_ADD16, 34)
+  RELOC_NUMBER (R_RISCV_ADD32, 35)
+  RELOC_NUMBER (R_RISCV_ADD64, 36)
+  RELOC_NUMBER (R_RISCV_SUB8, 37)
+  RELOC_NUMBER (R_RISCV_SUB16, 38)
+  RELOC_NUMBER (R_RISCV_SUB32, 39)
+  RELOC_NUMBER (R_RISCV_SUB64, 40)
+  RELOC_NUMBER (R_RISCV_GNU_VTINHERIT, 41)
+  RELOC_NUMBER (R_RISCV_GNU_VTENTRY, 42)
+  RELOC_NUMBER (R_RISCV_ALIGN, 43)
+  RELOC_NUMBER (R_RISCV_RVC_BRANCH, 44)
+  RELOC_NUMBER (R_RISCV_RVC_JUMP, 45)
+  RELOC_NUMBER (R_RISCV_RVC_LUI, 46)
+  RELOC_NUMBER (R_RISCV_GPREL_I, 47)
+  RELOC_NUMBER (R_RISCV_GPREL_S, 48)
+END_RELOC_NUMBERS (R_RISCV_max)
+
+/* Processor specific flags for the ELF header e_flags field.  */
+
+/* File may contain compressed instructions.  */
+#define EF_RISCV_RVC 0x0001
+
+/* File uses the soft-float calling convention.  */
+#define EF_RISCV_SOFT_FLOAT 0x0002
+
+#endif /* _ELF_RISCV_H */
-- 
2.7.3



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