Remove old gmonlib from libgcc and reimplemnt profiling using UCB
counters.

gcc/
2016-07-28  Claudiu Zissulescu  <claz...@synopsys.com>

        * config/arc/arc.h (LINK_SPEC): Tidy up.
        (ENDFILE_SPEC): Likewise.
        (LIB_SPEC): Likewise.
        (STARTFILE_SPEC): Include gcrt0 when profiling.
        (FUNCTION_PROFILER): Use __mcount.
        * config/arc/arc.opt (mucb-mcount): Remove.
        * doc/invoke.texi (ARC): Remove mucb-mcount doc.
        * arc/arc-protos.h (arc_profile_call): Remove.
        * arc/arc.c (write_profile_sections): Likewise.
        (arc_profile_call): Likewise.
        (unspec_prof_hash): Likewise.
        (unspec_prof_htab_eq): Likewise.
        (arc_legitimate_constant_p): Remove UNSPEC_PROF.
        (arc_reorg): Remove call to write_profile_sections.
        * arc/arc.md (call): Remove call to arc_profile_call.
        (call_value): Likewise.
        (sibcall): Likewise.
        (sibcall_value): Likewise.
        (define_constants): Remove UNSPEC_PROF.

libgcc/
2016-07-28  Claudiu Zissulescu  <claz...@synopsys.com>

        * config.host (arc*-*-linux-uclibc*): Remove libgmon, crtg, and
        crtgend.
        (arc*-*-elf*): Likewise.
        * config/arc/t-arc: Remove old gmon lib targets.
        * arc/crtg.S: Reomve.
        * arc/crtgend.S: Likewise.
        * arc/gmon/atomic.h: Likewise.
        * arc/gmon/auxreg.h: Likewise.
        * arc/gmon/dcache_linesz.S: Likewise.
        * arc/gmon/gmon.c: Likewise.
        * arc/gmon/machine-gmon.h: Likewise.
        * arc/gmon/mcount.c: Likewise.
        * arc/gmon/prof-freq-stub.S: Likewise.
        * arc/gmon/prof-freq.c: Likewise.
        * arc/gmon/profil.S: Likewise.
        * arc/gmon/sys/gmon.h: Likewise.
        * arc/gmon/sys/gmon_out.h: Likewise.
        * arc/t-arc-newlib: Likewise.
        * arc/t-arc700-uClibc: Renamed to t-arc-uClibc.
---
 gcc/config/arc/arc-protos.h             |   1 -
 gcc/config/arc/arc.c                    | 152 -----------
 gcc/config/arc/arc.h                    |  28 +-
 gcc/config/arc/arc.md                   |  35 +--
 gcc/config/arc/arc.opt                  |   4 -
 gcc/doc/invoke.texi                     |   8 +-
 libgcc/config.host                      |  10 +-
 libgcc/config/arc/crtg.S                |  51 ----
 libgcc/config/arc/crtgend.S             |  33 ---
 libgcc/config/arc/gmon/atomic.h         |  26 --
 libgcc/config/arc/gmon/auxreg.h         |  35 ---
 libgcc/config/arc/gmon/dcache_linesz.S  |  57 ----
 libgcc/config/arc/gmon/gmon.c           | 450 --------------------------------
 libgcc/config/arc/gmon/machine-gmon.h   |  65 -----
 libgcc/config/arc/gmon/mcount.c         | 206 ---------------
 libgcc/config/arc/gmon/prof-freq-stub.S |  40 ---
 libgcc/config/arc/gmon/prof-freq.c      |  60 -----
 libgcc/config/arc/gmon/profil.S         | 164 ------------
 libgcc/config/arc/gmon/sys/gmon.h       | 217 ---------------
 libgcc/config/arc/gmon/sys/gmon_out.h   |  55 ----
 libgcc/config/arc/t-arc                 |  37 ---
 libgcc/config/arc/t-arc-newlib          |  22 --
 libgcc/config/arc/t-arc-uClibc          |  38 +++
 libgcc/config/arc/t-arc700-uClibc       |  40 ---
 24 files changed, 60 insertions(+), 1774 deletions(-)
 delete mode 100644 libgcc/config/arc/crtg.S
 delete mode 100644 libgcc/config/arc/crtgend.S
 delete mode 100644 libgcc/config/arc/gmon/atomic.h
 delete mode 100644 libgcc/config/arc/gmon/auxreg.h
 delete mode 100644 libgcc/config/arc/gmon/dcache_linesz.S
 delete mode 100644 libgcc/config/arc/gmon/gmon.c
 delete mode 100644 libgcc/config/arc/gmon/machine-gmon.h
 delete mode 100644 libgcc/config/arc/gmon/mcount.c
 delete mode 100644 libgcc/config/arc/gmon/prof-freq-stub.S
 delete mode 100644 libgcc/config/arc/gmon/prof-freq.c
 delete mode 100644 libgcc/config/arc/gmon/profil.S
 delete mode 100644 libgcc/config/arc/gmon/sys/gmon.h
 delete mode 100644 libgcc/config/arc/gmon/sys/gmon_out.h
 delete mode 100644 libgcc/config/arc/t-arc-newlib
 create mode 100644 libgcc/config/arc/t-arc-uClibc
 delete mode 100644 libgcc/config/arc/t-arc700-uClibc

diff --git a/gcc/config/arc/arc-protos.h b/gcc/config/arc/arc-protos.h
index d0a4e80..014bb8f 100644
--- a/gcc/config/arc/arc-protos.h
+++ b/gcc/config/arc/arc-protos.h
@@ -68,7 +68,6 @@ extern bool arc_raw_symbolic_reference_mentioned_p (rtx, 
bool);
 extern bool arc_legitimate_pic_operand_p (rtx);
 extern bool arc_is_longcall_p (rtx);
 extern bool arc_is_shortcall_p (rtx);
-extern bool arc_profile_call (rtx callee);
 extern bool valid_brcc_with_delay_p (rtx *);
 extern bool small_data_pattern (rtx , machine_mode);
 extern rtx arc_rewrite_small_data (rtx);
diff --git a/gcc/config/arc/arc.c b/gcc/config/arc/arc.c
index 7c5f69b..780d20b 100644
--- a/gcc/config/arc/arc.c
+++ b/gcc/config/arc/arc.c
@@ -3734,97 +3734,6 @@ arc_print_operand_address (FILE *file , rtx addr)
     }
 }
 
-/* Called via walk_stores.  DATA points to a hash table we can use to
-   establish a unique SYMBOL_REF for each counter, which corresponds to
-   a caller-callee pair.
-   X is a store which we want to examine for an UNSPEC_PROF, which
-   would be an address loaded into a register, or directly used in a MEM.
-   If we found an UNSPEC_PROF, if we encounter a new counter the first time,
-   write out a description and a data allocation for a 32 bit counter.
-   Also, fill in the appropriate symbol_ref into each UNSPEC_PROF instance.  */
-
-static void
-write_profile_sections (rtx dest ATTRIBUTE_UNUSED, rtx x, void *data)
-{
-  rtx *srcp, src;
-  htab_t htab = (htab_t) data;
-  rtx *slot;
-
-  if (GET_CODE (x) != SET)
-    return;
-  srcp = &SET_SRC (x);
-  if (MEM_P (*srcp))
-    srcp = &XEXP (*srcp, 0);
-  else if (MEM_P (SET_DEST (x)))
-    srcp = &XEXP (SET_DEST (x), 0);
-  src = *srcp;
-  if (GET_CODE (src) != CONST)
-    return;
-  src = XEXP (src, 0);
-  if (GET_CODE (src) != UNSPEC || XINT (src, 1) != UNSPEC_PROF)
-    return;
-
-  gcc_assert (XVECLEN (src, 0) == 3);
-  if (!htab_elements (htab))
-    {
-      output_asm_insn (".section .__arc_profile_desc, \"a\"\n"
-                      "\t.long %0 + 1\n",
-                      &XVECEXP (src, 0, 0));
-    }
-  slot = (rtx *) htab_find_slot (htab, src, INSERT);
-  if (*slot == HTAB_EMPTY_ENTRY)
-    {
-      static int count_nr;
-      char buf[24];
-      rtx count;
-
-      *slot = src;
-      sprintf (buf, "__prof_count%d", count_nr++);
-      count = gen_rtx_SYMBOL_REF (Pmode, xstrdup (buf));
-      XVECEXP (src, 0, 2) = count;
-      output_asm_insn (".section\t.__arc_profile_desc, \"a\"\n"
-                      "\t.long\t%1\n"
-                      "\t.section\t.__arc_profile_counters, \"aw\"\n"
-                      "\t.type\t%o2, @object\n"
-                      "\t.size\t%o2, 4\n"
-                      "%o2:\t.zero 4",
-                      &XVECEXP (src, 0, 0));
-      *srcp = count;
-    }
-  else
-    *srcp = XVECEXP (*slot, 0, 2);
-}
-
-/* Hash function for UNSPEC_PROF htab.  Use both the caller's name and
-   the callee's name (if known).  */
-
-static hashval_t
-unspec_prof_hash (const void *x)
-{
-  const_rtx u = (const_rtx) x;
-  const_rtx s1 = XVECEXP (u, 0, 1);
-
-  return (htab_hash_string (XSTR (XVECEXP (u, 0, 0), 0))
-         ^ (s1->code == SYMBOL_REF ? htab_hash_string (XSTR (s1, 0)) : 0));
-}
-
-/* Equality function for UNSPEC_PROF htab.  Two pieces of UNSPEC_PROF rtl
-   shall refer to the same counter if both caller name and callee rtl
-   are identical.  */
-
-static int
-unspec_prof_htab_eq (const void *x, const void *y)
-{
-  const_rtx u0 = (const_rtx) x;
-  const_rtx u1 = (const_rtx) y;
-  const_rtx s01 = XVECEXP (u0, 0, 1);
-  const_rtx s11 = XVECEXP (u1, 0, 1);
-
-  return (!strcmp (XSTR (XVECEXP (u0, 0, 0), 0),
-                  XSTR (XVECEXP (u1, 0, 0), 0))
-         && rtx_equal_p (s01, s11));
-}
-
 /* Conditional execution support.
 
    This is based on the ARM port but for now is much simpler.
@@ -5562,7 +5471,6 @@ arc_legitimate_constant_p (machine_mode mode, rtx x)
          case UNSPEC_TLS_GD:
          case UNSPEC_TLS_IE:
          case UNSPEC_TLS_OFF:
-         case UNSPEC_PROF:
            return true;
 
          default:
@@ -6483,47 +6391,6 @@ arc_is_shortcall_p (rtx sym_ref)
 
 }
 
-/* Emit profiling code for calling CALLEE.  Return true if a special
-   call pattern needs to be generated.  */
-
-bool
-arc_profile_call (rtx callee)
-{
-  rtx from = XEXP (DECL_RTL (current_function_decl), 0);
-
-  if (TARGET_UCB_MCOUNT)
-    /* Profiling is done by instrumenting the callee.  */
-    return false;
-
-  if (CONSTANT_P (callee))
-    {
-      rtx count_ptr
-       = gen_rtx_CONST (Pmode,
-                        gen_rtx_UNSPEC (Pmode,
-                                        gen_rtvec (3, from, callee,
-                                                   CONST0_RTX (Pmode)),
-                                        UNSPEC_PROF));
-      rtx counter = gen_rtx_MEM (SImode, count_ptr);
-      /* ??? The increment would better be done atomically, but as there is
-        no proper hardware support, that would be too expensive.  */
-      emit_move_insn (counter,
-                     force_reg (SImode, plus_constant (SImode, counter, 1)));
-      return false;
-    }
-  else
-    {
-      rtx count_list_ptr
-       = gen_rtx_CONST (Pmode,
-                        gen_rtx_UNSPEC (Pmode,
-                                        gen_rtvec (3, from, CONST0_RTX (Pmode),
-                                                   CONST0_RTX (Pmode)),
-                                        UNSPEC_PROF));
-      emit_move_insn (gen_rtx_REG (Pmode, 8), count_list_ptr);
-      emit_move_insn (gen_rtx_REG (Pmode, 9), callee);
-      return true;
-    }
-}
-
 /* Worker function for TARGET_RETURN_IN_MEMORY.  */
 
 static bool
@@ -6745,25 +6612,6 @@ arc_reorg (void)
   cfun->machine->arc_reorg_started = 1;
   arc_reorg_in_progress = 1;
 
-  /* Emit special sections for profiling.  */
-  if (crtl->profile)
-    {
-      section *save_text_section;
-      rtx_insn *insn;
-      int size = get_max_uid () >> 4;
-      htab_t htab = htab_create (size, unspec_prof_hash, unspec_prof_htab_eq,
-                                NULL);
-
-      save_text_section = in_section;
-      for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
-       if (NONJUMP_INSN_P (insn))
-         walk_stores (PATTERN (insn), write_profile_sections, htab);
-      if (htab_elements (htab))
-       in_section = 0;
-      switch_to_section (save_text_section);
-      htab_delete (htab);
-    }
-
   /* Link up loop ends with their loop start.  */
   {
     for (insn = get_insns (); insn; insn = NEXT_INSN (insn))
diff --git a/gcc/config/arc/arc.h b/gcc/config/arc/arc.h
index 802331f..9d1ad7b 100644
--- a/gcc/config/arc/arc.h
+++ b/gcc/config/arc/arc.h
@@ -121,12 +121,11 @@ extern const char *arc_cpu_to_as (int argc, const char 
**argv);
                   -X %{mbig-endian:-EB} \
                   %{EB} %{EL} \
                   %{marclinux*} \
-                  %{!marclinux*: %{pg|p|profile:-marclinux_prof;: -marclinux}} 
\
+                  %{!marclinux*: -marclinux} \
                   %{!z:-z max-page-size=0x2000 -z common-page-size=0x2000} \
                   %{shared:-shared}"
 #else
-#define LINK_SPEC "%{mbig-endian:-EB} %{EB} %{EL}\
-  %{pg|p:-marcelf_prof;mA7|mARC700|mcpu=arc700|mcpu=ARC700: -marcelf}"
+#define LINK_SPEC "%{mbig-endian:-EB} %{EB} %{EL}"
 #endif
 
 #if DEFAULT_LIBC != LIBC_UCLIBC
@@ -135,7 +134,7 @@ extern const char *arc_cpu_to_as (int argc, const char 
**argv);
 #define EXTRA_SPECS \
   { "arc_tls_extra_start_spec", ARC_TLS_EXTRA_START_SPEC }, \
 
-#define STARTFILE_SPEC "%{!shared:crt0.o%s} crti%O%s %{pg|p:crtg.o%s} " \
+#define STARTFILE_SPEC "%{pg|p:gcrt0.o%s}%{!pg:%{!p:crt0.o%s}} crti%O%s " \
   "%(arc_tls_extra_start_spec) crtbegin.o%s"
 #else
 #define STARTFILE_SPEC                                                 \
@@ -143,7 +142,7 @@ extern const char *arc_cpu_to_as (int argc, const char 
**argv);
 #endif
 
 #if DEFAULT_LIBC != LIBC_UCLIBC
-#define ENDFILE_SPEC "%{pg|p:crtgend.o%s} crtend.o%s crtn%O%s"
+#define ENDFILE_SPEC "crtend.o%s crtn%O%s"
 #else
 #define ENDFILE_SPEC                                                   \
   LINUX_OR_ANDROID_LD (GNU_USER_TARGET_ENDFILE_SPEC, ANDROID_ENDFILE_SPEC)
@@ -154,12 +153,11 @@ extern const char *arc_cpu_to_as (int argc, const char 
**argv);
 #define LIB_SPEC  \
   "%{pthread:-lpthread} \
    %{shared:-lc} \
-   %{!shared:%{pg|p|profile:-lgmon -u profil --defsym __profil=profil} -lc}"
+   %{!shared:%{profile:-lc_p}%{!profile:-lc}}"
 #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
 #else
 #undef LIB_SPEC
-/* -lc_p not present for arc-elf32-* : ashwin */
-#define LIB_SPEC "%{!shared:%{g*:-lg} %{pg|p:-lgmon} -lc}"
+#define LIB_SPEC "%{!shared:%{g*:-lg} -lc}"
 #endif
 
 #ifndef DRIVER_ENDIAN_SELF_SPECS
@@ -916,12 +914,14 @@ extern int arc_initial_elimination_offset(int from, int 
to);
   (OFFSET) = arc_initial_elimination_offset ((FROM), (TO))
 
 /* Output assembler code to FILE to increment profiler label # LABELNO
-   for profiling a function entry.
-   We actually emit the profiler code at the call site, so leave this one
-   empty.  */
-#define FUNCTION_PROFILER(FILE, LABELNO) \
-  if (TARGET_UCB_MCOUNT) \
-    fprintf (FILE, "\t%s\n", arc_output_libcall ("__mcount"))
+   for profiling a function entry.  */
+#define FUNCTION_PROFILER(FILE, LABELNO)                       \
+  do {                                                         \
+  if (flag_pic)                                                        \
+    fprintf (FILE, "\tbl\t__mcount@plt\n");                    \
+  else                                                         \
+    fprintf (FILE, "\tbl\t__mcount\n");                                \
+  } while (0);
 
 #define NO_PROFILE_COUNTERS  1
 
diff --git a/gcc/config/arc/arc.md b/gcc/config/arc/arc.md
index db0e846..8e26238 100644
--- a/gcc/config/arc/arc.md
+++ b/gcc/config/arc/arc.md
@@ -9,7 +9,7 @@
 ;;    Saurabh Verma (saurabh.ve...@codito.com)
 ;;    Ramana Radhakrishnan(ramana.radhakrish...@codito.com)
 ;;
-;;    Profiling support and performance improvements by
+;;    Performance improvements by
 ;;    Joern Rennecke (joern.renne...@embecosm.com)
 ;;
 
@@ -165,9 +165,7 @@
   ])
 
 (define_constants
-  [(UNSPEC_PROF 18) ; profile callgraph counter
-
-   (R0_REG 0)
+  [(R0_REG 0)
    (R1_REG 1)
    (R2_REG 2)
    (R3_REG 3)
@@ -4108,13 +4106,6 @@
 
     gcc_assert (MEM_P (operands[0]));
     callee  = XEXP (operands[0], 0);
-    if (crtl->profile && arc_profile_call (callee))
-      {
-       emit_call_insn (gen_call_prof (gen_rtx_SYMBOL_REF (Pmode,
-                                                          \"_mcount_call\"),
-                                      operands[1]));
-       DONE;
-      }
     /* This is to decide if we should generate indirect calls by loading the
        32 bit address of the callee into a register before performing the
        branch and link - this exposes cse opportunities.
@@ -4177,14 +4168,6 @@
 
     gcc_assert (MEM_P (operands[1]));
     callee = XEXP (operands[1], 0);
-    if (crtl->profile && arc_profile_call (callee))
-      {
-       emit_call_insn (gen_call_value_prof (operands[0],
-                                            gen_rtx_SYMBOL_REF (Pmode,
-                                                           \"_mcount_call\"),
-                                            operands[2]));
-       DONE;
-      }
      /* See the comment in define_expand \"call\".  */
     if (GET_CODE (callee) != REG
        && (GET_CODE (callee) == PLUS || arc_is_longcall_p (callee)))
@@ -4667,13 +4650,6 @@
 
     if (operands[2] == NULL_RTX)
       operands[2] = const0_rtx;
-    if (crtl->profile && arc_profile_call (callee))
-      {
-       emit_insn (gen_sibcall_prof
-                   (gen_rtx_SYMBOL_REF (Pmode, \"_mcount_call\"),
-                    operands[1], operands[2]));
-       DONE;
-      }
     if (GET_CODE (callee) != REG
        && (GET_CODE (callee) == PLUS || arc_is_longcall_p (callee)))
       XEXP (operands[0], 0) = force_reg (Pmode, callee);
@@ -4693,13 +4669,6 @@
 
     if (operands[3] == NULL_RTX)
       operands[3] = const0_rtx;
-    if (crtl->profile && arc_profile_call (XEXP (operands[1], 0)))
-      {
-       emit_insn (gen_sibcall_value_prof
-                   (operands[0], gen_rtx_SYMBOL_REF (Pmode, \"_mcount_call\"),
-                    operands[2], operands[3]));
-       DONE;
-      }
     if (GET_CODE (callee) != REG && arc_is_longcall_p (callee))
       XEXP (operands[1], 0) = force_reg (Pmode, callee);
   }"
diff --git a/gcc/config/arc/arc.opt b/gcc/config/arc/arc.opt
index 31b305b..ec4f055 100644
--- a/gcc/config/arc/arc.opt
+++ b/gcc/config/arc/arc.opt
@@ -409,10 +409,6 @@ mlra-priority-noncompact
 Target RejectNegative Var(arc_lra_prioritytag, ARC_LRA_PRIORITY_NONCOMPACT)
 Reduce priority for r0..r3 / r12..r15 with TARGET_REGISTER_PRIORITY.
 
-mucb-mcount
-Target Report Var(TARGET_UCB_MCOUNT)
-instrument with mcount calls as in the ucb code.
-
 ; backward-compatibility aliases, translated by DRIVER_SELF_SPECS
 
 mEA
diff --git a/gcc/doc/invoke.texi b/gcc/doc/invoke.texi
index 034ae98..30eb88f 100644
--- a/gcc/doc/invoke.texi
+++ b/gcc/doc/invoke.texi
@@ -609,7 +609,7 @@ Objective-C and Objective-C++ Dialects}.
 -mcrc -mdsp-packa -mdvbf -mlock -mmac-d16 -mmac-24 -mrtsc -mswape @gol
 -mtelephony -mxy -misize -mannotate-align -marclinux -marclinux_prof @gol
 -mlong-calls -mmedium-calls -msdata @gol
--mucb-mcount -mvolatile-cache -mtp-regno=@var{regno} @gol
+-mvolatile-cache -mtp-regno=@var{regno} @gol
 -malign-call -mauto-modify-reg -mbbit-peephole -mno-brcc @gol
 -mcase-vector-pcrel -mcompact-casesi -mno-cond-exec -mearly-cbranchsi @gol
 -mexpand-adddi -mindexed-loads -mlra -mlra-priority-none @gol
@@ -14623,12 +14623,6 @@ Do not generate sdata references.  This is the default 
for tool chains
 built for @w{@code{arc-linux-uclibc}} and @w{@code{arceb-linux-uclibc}}
 targets.
 
-@item -mucb-mcount
-@opindex mucb-mcount
-Instrument with mcount calls as used in UCB code.  I.e. do the
-counting in the callee, not the caller.  By default ARC instrumentation
-counts in the caller.
-
 @item -mvolatile-cache
 @opindex mvolatile-cache
 Use ordinarily cached memory accesses for volatile references.  This is the
diff --git a/libgcc/config.host b/libgcc/config.host
index b1a2be6..3152216 100644
--- a/libgcc/config.host
+++ b/libgcc/config.host
@@ -368,13 +368,13 @@ alpha*-dec-*vms*)
        md_unwind_header=alpha/vms-unwind.h
        ;;
 arc*-*-elf*)
-       tmake_file="arc/t-arc-newlib arc/t-arc"
-       extra_parts="crti.o crtn.o crtend.o crtbegin.o crtendS.o crtbeginS.o 
libgmon.a crtg.o crtgend.o"
-       extra_parts="${extra_parts} crttls.o"
+       tmake_file="arc/t-arc"
+       extra_parts="crti.o crtn.o crtend.o crtbegin.o crtendS.o crtbeginS.o"
+       extra_parts="$extra_parts crttls.o"
        ;;
 arc*-*-linux-uclibc*)
-       tmake_file="${tmake_file} t-slibgcc-libgcc t-slibgcc-nolc-override 
arc/t-arc700-uClibc arc/t-arc"
-       extra_parts="$extra_parts crti.o crtn.o libgmon.a crtg.o crtgend.o"
+       tmake_file="${tmake_file} t-slibgcc-libgcc t-slibgcc-nolc-override 
arc/t-arc-uClibc arc/t-arc"
+       extra_parts="$extra_parts crti.o crtn.o"
        extra_parts="$extra_parts crttls.o"
        ;;
 arm-wrs-vxworks)
diff --git a/libgcc/config/arc/crtg.S b/libgcc/config/arc/crtg.S
deleted file mode 100644
index ca3cfb6..0000000
--- a/libgcc/config/arc/crtg.S
+++ /dev/null
@@ -1,51 +0,0 @@
-/* Code to start and stop profiling for the Synopsys DesignWare ARC CPU.
-
-   Copyright (C) 1994-2016 Free Software Foundation, Inc.
-   Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-               on behalf of Synopsys Inc.
-
-This file is part of GCC.
-
-GCC 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, or (at your option) any later
-version.
-
-GCC 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.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-<http://www.gnu.org/licenses/>.  */
-
-       .section .init
-       .global _init
-       .global _fini
-       .global __monstartup
-       mov_s   r0,_init
-       mov_s   r1,_fini
-       jl      __monstartup
-
-       .section .__arc_profile_desc, "a"
-       .global __arc_profile_desc_secstart
-       .balign 4
-__arc_profile_desc_secstart:
-       .section .__arc_profile_forward, "a"
-       .global __arc_profile_forward_secstart
-       .balign 4
-__arc_profile_forward_secstart:
-       .section .__arc_profile_counters, "aw"
-       .global __arc_profile_counters_secstart
-       .balign 4
-__arc_profile_counters_secstart:
-
-       .section .fini
-       .global _mcleanup
-       jl      _mcleanup
diff --git a/libgcc/config/arc/crtgend.S b/libgcc/config/arc/crtgend.S
deleted file mode 100644
index fad630f..0000000
--- a/libgcc/config/arc/crtgend.S
+++ /dev/null
@@ -1,33 +0,0 @@
-/* Code to start and stop profiling for the Synopsys DesignWare ARC CPU.
-
-   Copyright (C) 1994-2016 Free Software Foundation, Inc.
-   Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-               on behalf of Synopsys Inc.
-
-This file is part of GCC.
-
-GCC 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, or (at your option) any later
-version.
-
-GCC 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.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-<http://www.gnu.org/licenses/>.  */
-
-       .section .__arc_profile_desc, "a"
-       .global __arc_profile_desc_secend
-__arc_profile_desc_secend:
-       .section .__arc_profile_forward, "a"
-       .global __arc_profile_forward_secend
-__arc_profile_forward_secend:
diff --git a/libgcc/config/arc/gmon/atomic.h b/libgcc/config/arc/gmon/atomic.h
deleted file mode 100644
index 049aa52..0000000
--- a/libgcc/config/arc/gmon/atomic.h
+++ /dev/null
@@ -1,26 +0,0 @@
-/* Copyright (C) 2007-2016 Free Software Foundation, Inc.
-   Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-               on behalf of Synopsys Inc.
-
-This file is part of GCC.
-
-GCC 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, or (at your option) any later
-version.
-
-GCC 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.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-<http://www.gnu.org/licenses/>.  */
-
-/* File deliberately left blank. */
diff --git a/libgcc/config/arc/gmon/auxreg.h b/libgcc/config/arc/gmon/auxreg.h
deleted file mode 100644
index 5210ea0..0000000
--- a/libgcc/config/arc/gmon/auxreg.h
+++ /dev/null
@@ -1,35 +0,0 @@
-/* Copyright (C) 2007-2016 Free Software Foundation, Inc.
-   Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-               on behalf of Synopsys Inc.
-
-This file is part of GCC.
-
-GCC 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, or (at your option) any later
-version.
-
-GCC 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.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-<http://www.gnu.org/licenses/>.  */
-
-#define        LP_START        0x02
-#define        LP_END          0x03
-#define IDENTITY       0x04
-#define STATUS32       0x0a
-#define        COUNT0          0x21 /* Timer 0 count */
-#define        CONTROL0        0x22 /* Timer 0 control */
-#define        LIMIT0          0x23 /* Timer 0 limit */
-#define INT_VECTOR_BASE        0x25
-#define D_CACHE_BUILD  0x72
-#define DC_FLDL                0x4c
diff --git a/libgcc/config/arc/gmon/dcache_linesz.S 
b/libgcc/config/arc/gmon/dcache_linesz.S
deleted file mode 100644
index 29572ae..0000000
--- a/libgcc/config/arc/gmon/dcache_linesz.S
+++ /dev/null
@@ -1,57 +0,0 @@
-/* This file contains code to do profiling.
-
-   Copyright (C) 2007-2016 Free Software Foundation, Inc.
-   Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-               on behalf of Synopsys Inc.
-
-This file is part of GCC.
-
-GCC 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, or (at your option) any later
-version.
-
-GCC 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.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-<http://www.gnu.org/licenses/>.  */
-
-#include "../asm.h"
-#include "auxreg.h"
-/*  This file contains code to do profiling.  */
-       .weak   __profile_timer_cycles
-       .global __profile_timer_cycles
-       .set    __profile_timer_cycles, 200
-       .text
-       ; For Arctangent-A5, if no data cache is present, a read of the
-       ; cache build register returns the ID register.  For ARC600 and
-       ; later, the version field will be zero.
-       .global __dcache_linesz
-       .balign 4
-__dcache_linesz:
-#if !defined (__EM__) && !defined (__HS__)
-       lr      r12,[D_CACHE_BUILD]
-       extb_s  r0,r12
-       breq_s  r0,0,.Lsz_nocache
-       brge    r0,0x20,.Lsz_havecache
-       lr      r0,[IDENTITY]
-       breq    r12,r0,.Lsz_nocache
-.Lsz_havecache:
-       lsr_s   r12,r12,16
-       mov_s   r0,16
-       bmsk_s  r12,r12,3
-       asl_s   r0,r0,r12
-       j_s     [blink]
-.Lsz_nocache:
-#endif /* !__EM__  && !__HS__ */
-       mov_s   r0,1
-       j_s     [blink]
diff --git a/libgcc/config/arc/gmon/gmon.c b/libgcc/config/arc/gmon/gmon.c
deleted file mode 100644
index 82c09b0..0000000
--- a/libgcc/config/arc/gmon/gmon.c
+++ /dev/null
@@ -1,450 +0,0 @@
-/*-
- * Copyright (c) 1983, 1992, 1993
- *     The Regents of the University of California.  All rights reserved.
- * Copyright (C) 2007-2016 Free Software Foundation, Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-#if 0
-#include <sys/param.h>
-#include <sys/time.h>
-#endif
-#include <sys/gmon.h>
-#include <sys/gmon_out.h>
-
-#include <stddef.h>
-#include <errno.h>
-#include <stdio.h>
-#include <fcntl.h>
-#include <unistd.h>
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-#include <unistd.h>
-#if 0
-#include <libc-internal.h>
-#include <not-cancel.h>
-
-#ifdef USE_IN_LIBIO
-# include <wchar.h>
-#endif
-#endif
-#define internal_function
-#define weak_alias(fun,aliasid) extern __typeof(fun) aliasid __attribute__ 
((weak, alias (#fun)));
-#define __libc_enable_secure 0
-
-/*  Head of basic-block list or NULL. */
-struct __bb *__bb_head attribute_hidden;
-
-struct gmonparam _gmonparam attribute_hidden = { GMON_PROF_OFF };
-
-/*
- * See profil(2) where this is described:
- */
-static int     s_scale;
-#define                SCALE_1_TO_1    0x10000L
-
-#define ERR(s) write (STDERR_FILENO, s, sizeof (s) - 1)
-
-void moncontrol (int mode);
-void __moncontrol (int mode);
-static void write_hist (int fd) internal_function;
-static void write_call_graph (int fd) internal_function;
-static void write_bb_counts (int fd) internal_function;
-
-/*
- * Control profiling
- *     profiling is what mcount checks to see if
- *     all the data structures are ready.
- */
-void
-__moncontrol (int mode)
-{
-  struct gmonparam *p = &_gmonparam;
-
-  /* Don't change the state if we ran into an error.  */
-  if (p->state == GMON_PROF_ERROR)
-    return;
-
-  if (mode)
-    {
-      /* start */
-      __profil((void *) p->kcount, p->kcountsize, p->lowpc, s_scale);
-      p->state = GMON_PROF_ON;
-    }
-  else
-    {
-      /* stop */
-      __profil(NULL, 0, 0, 0);
-      p->state = GMON_PROF_OFF;
-    }
-}
-weak_alias (__moncontrol, moncontrol)
-
-
-void
-__monstartup (u_long lowpc, u_long highpc)
-{
-  register int o;
-  char *cp;
-  struct gmonparam *p = &_gmonparam;
-  int linesz;
-
-  /*
-   * round lowpc and highpc to multiples of the density we're using
-   * so the rest of the scaling (here and in gprof) stays in ints.
-   */
-  p->lowpc = ROUNDDOWN(lowpc, HISTFRACTION * sizeof(HISTCOUNTER));
-  if (sizeof *p->froms % sizeof(HISTCOUNTER) != 0)
-    {
-      p->highpc = ROUNDUP(highpc, HISTFRACTION * sizeof(HISTCOUNTER));
-      p->textsize = p->highpc - p->lowpc;
-      p->kcountsize = ROUNDUP((p->textsize + HISTFRACTION - 1) / HISTFRACTION,
-                             sizeof (*p->froms));
-    }
-  else
-    {
-      /* Avoid odd scales by rounding up highpc to get kcountsize rounded.  */
-      p->textsize = ROUNDUP (highpc - p->lowpc,
-                            HISTFRACTION * sizeof (*p->froms));
-      p->highpc = p->lowpc + p->textsize;
-      p->kcountsize = p->textsize / HISTFRACTION;
-    }
-  p->hashfraction = HASHFRACTION;
-  p->log_hashfraction = -1;
-  /* The following test must be kept in sync with the corresponding
-     test in mcount.c.  */
-  if ((HASHFRACTION & (HASHFRACTION - 1)) == 0) {
-      /* if HASHFRACTION is a power of two, mcount can use shifting
-        instead of integer division.  Precompute shift amount. */
-      p->log_hashfraction = ffs(p->hashfraction * sizeof(*p->froms)) - 1;
-  }
-  p->tolimit = p->textsize * ARCDENSITY / 100;
-  if (p->tolimit < MINARCS)
-    p->tolimit = MINARCS;
-  else if (p->tolimit > MAXARCS)
-    p->tolimit = MAXARCS;
-  p->tossize = p->tolimit * sizeof(struct tostruct);
-
-  /* p->kcount must not share cache lines with the adjacent data, because
-     we use uncached accesses while profiling.  */
-  linesz = __dcache_linesz ();
-  cp = calloc (ROUNDUP (p->kcountsize, linesz) + p->tossize
-              + (linesz - 1), 1);
-  if (! cp)
-    {
-      ERR("monstartup: out of memory\n");
-      p->tos = NULL;
-      p->state = GMON_PROF_ERROR;
-      /* In case we loose the error state due to a race,
-        prevent invalid writes also by clearing tolimit.  */
-      p->tolimit = 0;
-      return;
-    }
-  p->tos = (struct tostruct *)cp;
-  cp += p->tossize;
-  cp = (char *) ROUNDUP ((ptrdiff_t) cp, linesz);
-  p->kcount = (HISTCOUNTER *)cp;
-  cp += ROUNDUP (p->kcountsize, linesz);
-
-  p->tos[0].link = 0;
-
-  o = p->highpc - p->lowpc;
-  if (p->kcountsize < (u_long) o)
-    {
-#ifndef hp300
-      s_scale = ((float)p->kcountsize / o ) * SCALE_1_TO_1;
-#else
-      /* avoid floating point operations */
-      int quot = o / p->kcountsize;
-
-      if (quot >= 0x10000)
-       s_scale = 1;
-      else if (quot >= 0x100)
-       s_scale = 0x10000 / quot;
-      else if (o >= 0x800000)
-       s_scale = 0x1000000 / (o / (p->kcountsize >> 8));
-      else
-       s_scale = 0x1000000 / ((o << 8) / p->kcountsize);
-#endif
-    } else
-      s_scale = SCALE_1_TO_1;
-
-  __moncontrol(1);
-}
-weak_alias (__monstartup, monstartup)
-
-
-static void
-internal_function
-write_hist (int fd)
-{
-  u_char tag = GMON_TAG_TIME_HIST;
-  struct arc_gmon_hist_hdr thdr __attribute__ ((aligned (__alignof__ (char 
*))));
-  int r;
-
-  if (_gmonparam.kcountsize > 0)
-    {
-      *(char **) thdr.low_pc = (char *) _gmonparam.lowpc;
-      *(char **) thdr.high_pc = (char *) _gmonparam.highpc;
-      *(int32_t *) thdr.hist_size = (_gmonparam.kcountsize
-                                    / sizeof (HISTCOUNTER));
-      *(int32_t *) thdr.prof_rate = __profile_frequency ();
-      strncpy (thdr.dimen, "seconds", sizeof (thdr.dimen));
-      thdr.dimen_abbrev = 's';
-
-      r = write (fd, &tag, sizeof tag);
-      if (r != sizeof tag)
-       return;
-      r = write (fd, &thdr, sizeof thdr);
-      if (r != sizeof thdr)
-       return;
-      r = write (fd,_gmonparam.kcount, _gmonparam.kcountsize);
-      if ((unsigned) r != _gmonparam.kcountsize)
-       return;
-    }
-}
-
-
-static void
-internal_function
-write_call_graph (int fd)
-{
-#define NARCS_PER_WRITE        64
-#define BYTES_PER_ARC (1 + sizeof (struct gmon_cg_arc_record))
-#define BYTES_PER_WRITE (BYTES_PER_ARC * NARCS_PER_WRITE)
-  ARCINDEX to_index;
-  u_long frompc, selfpc, count;
-  char buffer[BYTES_PER_WRITE], *p;
-  u_long *prof_desc = __arc_profile_desc_secstart;
-  u_long *prof_count = __arc_profile_counters_secstart;
-  u_long *prof_desc_end = __arc_profile_desc_secend;
-  u_long *prof_forward = __arc_profile_forward_secstart;
-
-  for (p = buffer; p < buffer + BYTES_PER_WRITE; p += BYTES_PER_ARC)
-    *p = GMON_TAG_CG_ARC;
-  p = buffer;
-  frompc = *prof_desc++ & -2;
-  while (prof_desc < prof_desc_end)
-    {
-      selfpc = *prof_desc++;
-      if (selfpc & 1)
-       {
-         frompc = selfpc & -2;
-         selfpc = *prof_desc++;
-       }
-      count = *prof_count++;
-      if (selfpc)
-       {
-         struct arc
-           {
-             char *frompc;
-             char *selfpc;
-             int32_t count;
-           }
-         arc;
-
-         if (!count)
-           continue;
-         arc.frompc = (char *) frompc;
-         arc.selfpc = (char *) selfpc;
-         arc.count  = count;
-         memcpy (p + 1, &arc, sizeof arc);
-         p += 1 + sizeof arc;
-
-         if (p == buffer + BYTES_PER_WRITE)
-           {
-             write (fd, buffer, BYTES_PER_WRITE);
-             p = buffer;
-           }
-       }
-      else
-       {
-         for (to_index = count;
-              to_index != 0;
-              to_index = _gmonparam.tos[to_index].link)
-           {
-             struct arc
-               {
-                 char *frompc;
-                 char *selfpc;
-                 int32_t count;
-               }
-             arc;
-
-             arc.frompc = (char *) frompc;
-             arc.selfpc = (char *) _gmonparam.tos[to_index].selfpc;
-             arc.count  = _gmonparam.tos[to_index].count;
-             memcpy (p + 1, &arc, sizeof arc);
-             p += 1 + sizeof arc;
-
-             if (p == buffer + BYTES_PER_WRITE)
-               {
-                 write (fd, buffer, BYTES_PER_WRITE);
-                 p = buffer;
-               }
-           }
-       }
-    }
-  while (prof_forward < __arc_profile_forward_secend)
-    {
-      /* ??? The 'call count' is actually supposed to be a fixed point
-        factor, with 16 bits each before and after the point.
-        It would be much nicer if we figured out the actual number
-        of calls to the caller, and multiplied that with the fixed point
-        factor to arrive at the estimated calls for the callee.  */
-      memcpy (p + 1, prof_forward, 3 * sizeof *prof_forward);
-      prof_forward += 3;
-      p += 1 + 3 * sizeof *prof_forward;
-      if (p == buffer + BYTES_PER_WRITE)
-       {
-         write (fd, buffer, BYTES_PER_WRITE);
-         p = buffer;
-       }
-    }
-  if (p != buffer)
-    write (fd, buffer, p - buffer);
-}
-
-
-static void
-internal_function
-write_bb_counts (int fd)
-{
-  struct __bb *grp;
-  u_char tag = GMON_TAG_BB_COUNT;
-  size_t ncounts;
-  size_t i;
-
-  struct { unsigned long address; long count; } bbbody[8];
-  size_t nfilled;
-
-  /* Write each group of basic-block info (all basic-blocks in a
-     compilation unit form a single group). */
-
-  for (grp = __bb_head; grp; grp = grp->next)
-    {
-      ncounts = grp->ncounts;
-      write (fd, &tag, 1);
-      write (fd, &ncounts, sizeof ncounts);
-      for (nfilled = i = 0; i < ncounts; ++i)
-       {
-         if (nfilled == sizeof (bbbody) / sizeof (bbbody[0]))
-           {
-             write (fd, bbbody, sizeof bbbody);
-             nfilled = 0;
-           }
-
-         bbbody[nfilled].address = grp->addresses[i];
-         bbbody[nfilled++].count = grp->counts[i];
-       }
-      if (nfilled > 0)
-       write (fd, bbbody, nfilled * sizeof bbbody[0]);
-    }
-}
-
-
-static void
-write_gmon (void)
-{
-    struct gmon_hdr ghdr __attribute__ ((aligned (__alignof__ (int))));
-    int fd = -1;
-    char *env;
-
-#ifndef O_NOFOLLOW
-# define O_NOFOLLOW    0
-#endif
-
-    env = getenv ("GMON_OUT_PREFIX");
-    if (env != NULL && !__libc_enable_secure)
-      {
-       size_t len = strlen (env);
-       char buf[len + 20];
-       snprintf (buf, sizeof (buf), "%s.%u", env, getpid ());
-       fd = open (buf, O_CREAT|O_TRUNC|O_WRONLY|O_NOFOLLOW, 0666);
-      }
-
-    if (fd == -1)
-      {
-       fd = open ("gmon.out", O_CREAT|O_TRUNC|O_WRONLY|O_NOFOLLOW,
-                             0666);
-       if (fd < 0)
-         {
-           perror ("_mcleanup: gmon.out");
-           return;
-         }
-      }
-
-    /* write gmon.out header: */
-    memset (&ghdr, '\0', sizeof (struct gmon_hdr));
-    memcpy (&ghdr.cookie[0], GMON_MAGIC, sizeof (ghdr.cookie));
-    *(int32_t *) ghdr.version = GMON_VERSION;
-    write (fd, &ghdr, sizeof (struct gmon_hdr));
-
-    /* write PC histogram: */
-    write_hist (fd);
-
-    /* write call-graph: */
-    write_call_graph (fd);
-
-    /* write basic-block execution counts: */
-    write_bb_counts (fd);
-
-    close (fd);
-}
-
-
-void
-__write_profiling (void)
-{
-  int save = _gmonparam.state;
-  _gmonparam.state = GMON_PROF_OFF;
-  if (save == GMON_PROF_ON)
-    write_gmon ();
-  _gmonparam.state = save;
-}
-#ifndef SHARED
-/* This symbol isn't used anywhere in the DSO and it is not exported.
-   This would normally mean it should be removed to get the same API
-   in static libraries.  But since profiling is special in static libs
-   anyway we keep it.  But not when building the DSO since some
-   quality assurance tests will otherwise trigger.  */
-weak_alias (__write_profiling, write_profiling)
-#endif
-
-
-void
-_mcleanup (void)
-{
-  __moncontrol (0);
-
-  if (_gmonparam.state != GMON_PROF_ERROR)
-    write_gmon ();
-
-  /* free the memory. */
-  if (_gmonparam.tos != NULL)
-    free (_gmonparam.tos);
-}
diff --git a/libgcc/config/arc/gmon/machine-gmon.h 
b/libgcc/config/arc/gmon/machine-gmon.h
deleted file mode 100644
index e7549ae..0000000
--- a/libgcc/config/arc/gmon/machine-gmon.h
+++ /dev/null
@@ -1,65 +0,0 @@
-/* Copyright (C) 2007-2016 Free Software Foundation, Inc.
-   Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-               on behalf of Synopsys Inc.
-
-This file is part of GCC.
-
-GCC 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, or (at your option) any later
-version.
-
-GCC 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.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-<http://www.gnu.org/licenses/>.  */
-
-#ifndef MACHINE_GMON_H
-#define MACHINE_GMON_H
-
-/* We can't fake out own <sys/types.h> header because the newlib / uclibc
-   headers in GCC_FOR_TARGET take precedence.  */
-
-#define __BEGIN_DECLS
-#define __END_DECLS
-
-#define __THROW
-
-extern int __dcache_linesz (void);
-
-#define _MCOUNT_DECL(countp, selfpc) \
-  static inline void _mcount_internal (void *countp, u_long selfpc)
-
-extern void _mcount (void);
-extern void _mcount_call (void);
-
-/* N.B.: the calling point might be a sibcall, thus blink does not necessarily
-  hold the caller's address.  r8 doesn't hold the caller's address, either,
-  but rather a pointer to the counter data structure associated with the
-  caller.
-  This function must be compiled with optimization turned on in order to
-  enable a sibcall for the final call to selfpc; this is important when trying
-  to profile a program with deep tail-recursion that would get a stack
-  overflow otherwise.  */
-#define MCOUNT \
-void \
-_mcount_call (void) \
-{ \
-  register void *countp __asm("r8"); \
-  register u_long selfpc __asm("r9"); \
-  _mcount_internal (countp, selfpc); \
-  ((void (*)(void)) selfpc) (); \
-}
-
-extern int __profil (u_short *,size_t, size_t, u_int);
-
-#endif /* MACHINE_GMON_H */
diff --git a/libgcc/config/arc/gmon/mcount.c b/libgcc/config/arc/gmon/mcount.c
deleted file mode 100644
index 8afca36..0000000
--- a/libgcc/config/arc/gmon/mcount.c
+++ /dev/null
@@ -1,206 +0,0 @@
-/*-
- * Copyright (c) 1983, 1992, 1993
- *     The Regents of the University of California.  All rights reserved.
- *
- * Copyright (C) 2007-2016 Free Software Foundation, Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-#if !defined(lint) && !defined(KERNEL) && defined(LIBC_SCCS)
-static char sccsid[] = "@(#)mcount.c   8.1 (Berkeley) 6/4/93";
-#endif
-
-#if 0
-#include <unistd.h>
-#include <sys/param.h>
-#endif
-#include <sys/gmon.h>
-
-/* This file provides the machine-dependent definitions of the _MCOUNT_DECL
-   and MCOUNT macros.  */
-#include <machine-gmon.h>
-
-#include <atomic.h>
-
-/*
- * mcount is called on entry to each function compiled with the profiling
- * switch set.  _mcount(), which is declared in a machine-dependent way
- * with _MCOUNT_DECL, does the actual work and is either inlined into a
- * C routine or called by an assembly stub.  In any case, this magic is
- * taken care of by the MCOUNT definition in <machine/profile.h>.
- *
- * _mcount updates data structures that represent traversals of the
- * program's call graph edges.  frompc and selfpc are the return
- * address and function address that represents the given call graph edge.
- *
- * Note: the original BSD code used the same variable (frompcindex) for
- * both frompcindex and frompc.  Any reasonable, modern compiler will
- * perform this optimization.
- */
-_MCOUNT_DECL(count_ptr, selfpc)        /* _mcount; may be static, inline, etc 
*/
-{
-       register ARCINDEX *frompcindex;
-       register struct tostruct *top, *prevtop;
-       register struct gmonparam *p;
-       register ARCINDEX toindex;
-
-       /* Check for nested function trampoline.  */
-       if (selfpc & 2)
-         selfpc = *(u_long *) (selfpc + 10);
-
-       p = &_gmonparam;
-       /*
-        * check that we are profiling
-        * and that we aren't recursively invoked.
-        */
-#if 0
-       if (catomic_compare_and_exchange_bool_acq (&p->state, GMON_PROF_BUSY,
-                                                  GMON_PROF_ON))
-         return;
-#elif defined (__ARC700__)
-/* ??? This could temporarily lose the ERROR / OFF condition in a race,
-   but doing an actual compare_and_exchange would be too costly.  It would
-   be better if we had a semaphore independent of the 'sticky' state, but
-   then we could run into ABI compatibility problems with the size of struct
-   gmonparam.  */
-       {
-         u_long old_state;
-
-         __asm ("ex %0,%1": "=r" (old_state), "+m" (p->state)
-                : "0" (GMON_PROF_BUSY));
-         if (old_state != GMON_PROF_ON)
-           {
-             switch (old_state)
-               {
-               case GMON_PROF_OFF:
-                 __asm ("ex %0,%1": "+r" (old_state), "+m" (p->state));
-                 if (old_state == GMON_PROF_BUSY
-                     /* Switching off while we say we are busy while profiling
-                        was actually already switched off is all right.  */
-                     || old_state == GMON_PROF_OFF)
-                   break;
-                 /* It is not clear if we should allow switching on
-                    profiling at this point, and how to handle further races.
-                    For now, record an error in this case.  */
-                 /* Fall through.  */
-               default: /* We expect here only GMON_PROF_ERROR.  */
-                 p->state = GMON_PROF_ERROR;
-                 break;
-               case GMON_PROF_BUSY: break;
-               }
-             return;
-           }
-       }
-#else /* ??? No semaphore primitives available.  */
-       if (p->state != GMON_PROF_ON)
-         return;
-       p->state = GMON_PROF_BUSY;
-#endif
-
-       frompcindex = count_ptr;
-       toindex = *frompcindex;
-       if (toindex == 0) {
-               /*
-                *      first time traversing this arc
-                */
-               toindex = ++p->tos[0].link;
-               if (toindex >= (ARCINDEX) p->tolimit)
-                       /* halt further profiling */
-                       goto overflow;
-
-               *frompcindex = toindex;
-               top = &p->tos[toindex];
-               top->selfpc = selfpc;
-               top->count = 1;
-               top->link = 0;
-               goto done;
-       }
-       top = &p->tos[toindex];
-       if (top->selfpc == selfpc) {
-               /*
-                * arc at front of chain; usual case.
-                */
-               top->count++;
-               goto done;
-       }
-       /*
-        * have to go looking down chain for it.
-        * top points to what we are looking at,
-        * prevtop points to previous top.
-        * we know it is not at the head of the chain.
-        */
-       for (; /* goto done */; ) {
-               if (top->link == 0) {
-                       /*
-                        * top is end of the chain and none of the chain
-                        * had top->selfpc == selfpc.
-                        * so we allocate a new tostruct
-                        * and link it to the head of the chain.
-                        */
-                       toindex = ++p->tos[0].link;
-                       if (toindex >= (ARCINDEX) p->tolimit)
-                               goto overflow;
-
-                       top = &p->tos[toindex];
-                       top->selfpc = selfpc;
-                       top->count = 1;
-                       top->link = *frompcindex;
-                       *frompcindex = toindex;
-                       goto done;
-               }
-               /*
-                * otherwise, check the next arc on the chain.
-                */
-               prevtop = top;
-               top = &p->tos[top->link];
-               if (top->selfpc == selfpc) {
-                       /*
-                        * there it is.
-                        * increment its count
-                        * move it to the head of the chain.
-                        */
-                       top->count++;
-                       toindex = prevtop->link;
-                       prevtop->link = top->link;
-                       top->link = *frompcindex;
-                       *frompcindex = toindex;
-                       goto done;
-               }
-
-       }
-done:
-       p->state = GMON_PROF_ON;
-       return;
-overflow:
-       p->state = GMON_PROF_ERROR;
-       return;
-}
-
-/*
- * Actual definition of mcount function.  Defined in <machine/profile.h>,
- * which is included by <sys/gmon.h>.
- */
-MCOUNT
diff --git a/libgcc/config/arc/gmon/prof-freq-stub.S 
b/libgcc/config/arc/gmon/prof-freq-stub.S
deleted file mode 100644
index 9ffb30b..0000000
--- a/libgcc/config/arc/gmon/prof-freq-stub.S
+++ /dev/null
@@ -1,40 +0,0 @@
-/* This file contains code to do profiling.
-
-   Copyright (C) 2007-2016 Free Software Foundation, Inc.
-   Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-               on behalf of Synopsys Inc.
-
-This file is part of GCC.
-
-GCC 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, or (at your option) any later
-version.
-
-GCC 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.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-<http://www.gnu.org/licenses/>.  */
-
-#include "../asm.h"
-/*  This file contains code to do profiling.  */
-       .weak   __profile_frequency_value
-       .global __profile_frequency_value
-       .set    __profile_frequency_value, 1000
-       .text
-       .balign 4
-       .global __profile_frequency
-       FUNC(__profile_frequency)
-__profile_frequency:
-       mov_s   r0,__profile_frequency_value
-       j_s     [blink]
-       ENDFUNC(__profile_frequency)
diff --git a/libgcc/config/arc/gmon/prof-freq.c 
b/libgcc/config/arc/gmon/prof-freq.c
deleted file mode 100644
index 4437a37..0000000
--- a/libgcc/config/arc/gmon/prof-freq.c
+++ /dev/null
@@ -1,60 +0,0 @@
-/* Return frequency of ticks reported by profil.  Generic version. */
-/*-
- * Copyright (c) 1983, 1992, 1993
- *     The Regents of the University of California.  All rights reserved.
- *
- * Copyright (C) 2007-2016 Free Software Foundation, Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- */
-
-
-#include <sys/types.h>
-#include <sys/time.h>
-#if 0
-#include <libc-internal.h>
-#else
-#include "sys/gmon.h"
-#endif
-
-int
-__profile_frequency (void)
-{
-  /*
-   * Discover the tick frequency of the machine if something goes wrong,
-   * we return 0, an impossible hertz.
-   */
-  struct itimerval tim;
-
-  tim.it_interval.tv_sec = 0;
-  tim.it_interval.tv_usec = 1;
-  tim.it_value.tv_sec = 0;
-  tim.it_value.tv_usec = 0;
-  setitimer(ITIMER_REAL, &tim, 0);
-  setitimer(ITIMER_REAL, 0, &tim);
-  if (tim.it_interval.tv_usec < 2)
-    return 0;
-  return (1000000 / tim.it_interval.tv_usec);
-}
diff --git a/libgcc/config/arc/gmon/profil.S b/libgcc/config/arc/gmon/profil.S
deleted file mode 100644
index 807e9fe..0000000
--- a/libgcc/config/arc/gmon/profil.S
+++ /dev/null
@@ -1,164 +0,0 @@
-/* This file contains code to do profiling.
-
-   Copyright (C) 2007-2016 Free Software Foundation, Inc.
-   Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-               on behalf of Synopsys Inc.
-
-
-This file is part of GCC.
-
-GCC 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, or (at your option) any later
-version.
-
-GCC 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.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-<http://www.gnu.org/licenses/>.  */
-
-#include "../asm.h"
-#include "auxreg.h"
-/*  This file contains code to do profiling.  */
-       .weak   __profile_timer_cycles
-       .global __profile_timer_cycles
-       .set    __profile_timer_cycles, 200
-
-        .section .bss
-        .global __profil_offset
-        .align 4
-        .type  __profil_offset, @object
-        .size  __profil_offset, 4
-__profil_offset:
-        .zero   4
-
-       .text
-       .global __dcache_linesz
-       .global __profil
-       FUNC(__profil)
-#if !defined (__EM__) && !defined (__HS__)
-.Lstop_profiling:
-       sr      r0,[CONTROL0]
-       j_s     [blink]
-       .balign 4
-__profil:
-.Lprofil:
-       breq_s  r0,0,.Lstop_profiling
-       ; r0: buf r1: bufsiz r2: offset r3: scale
-       bxor.f  r3,r3,15; scale must be 0x8000, i.e. 1/2; generate 0.
-       push_s  blink
-       lsr_s   r2,r2,1
-       mov_s   r8,r0
-       flag.ne 1       ; halt if wrong scale
-       sub_s   r0,r0,r2
-       st      r0,[__profil_offset]
-       bl      __dcache_linesz
-       pop_s   blink
-       bbit1.d r0,0,nocache
-       mov_s   r0,r8
-#ifdef __ARC700__
-       add_s   r1,r1,31
-       lsr.f   lp_count,r1,5
-       lpne    2f
-       sr      r0,[DC_FLDL]
-       add_s   r0,r0,32
-#else /* !__ARC700__ */
-# FIX ME: set up loop according to cache line size
-       lr      r12,[D_CACHE_BUILD]
-       sub_s   r0,r0,16
-       sub_s   r1,r1,1
-       lsr_s   r12,r12,16
-       asr_s   r1,r1,4
-       bmsk_s  r12,r12,3
-       asr_s   r1,r1,r12
-       add.f   lp_count,r1,1
-       mov_s   r1,16
-       asl_s   r1,r1,r12
-       lpne    2f
-       add     r0,r0,r1
-       sr      r0,[DC_FLDL]
-#endif /* __ARC700__ */
-2:     b_s     .Lcounters_cleared
-nocache:
-.Lcounters_cleared:
-       lr      r1,[INT_VECTOR_BASE] ; disable timer0 interrupts
-       sr      r3,[CONTROL0]
-       sr      r3,[COUNT0]
-0:     ld_s    r0,[pcl,1f-0b+((0b-.Lprofil) & 2)] ; 1f@GOTOFF
-0:     ld_s    r12,[pcl,1f+4-0b+((0b-.Lprofil) & 2)] ; 1f@GOTOFF + 4
-       st_s    r0,[r1,24]; timer0 uses vector3
-       st_s    r12,[r1,24+4]; timer0 uses vector3
-       ;sr     10000,[LIMIT0]
-       sr      __profile_timer_cycles,[LIMIT0]
-       mov_s   r12,3   ; enable timer interrupts; count only when not halted.
-       sr      r12,[CONTROL0]
-       lr      r12,[STATUS32]
-       bset_s  r12,r12,1 ; allow level 1 interrupts
-       flag    r12
-       mov_s   r0,0
-       j_s     [blink]
-       .balign 4
-1:     j       __profil_irq
-#else
-__profil:
-       .balign 4
-       mov_s   r0,-1
-       j_s     [blink]
-#endif /* !__EM__ && !__HS__ */
-       ENDFUNC(__profil)
-
-       FUNC(__profil_irq)
-       .balign 4       ; make final jump unaligned to avoid delay penalty
-       .balign 32,0,12 ; make sure the code spans no more that two cache lines
-       nop_s
-__profil_irq:
-#if !defined (__EM__) && !defined (__HS__)
-       push_s  r0
-       ld      r0,[__profil_offset]
-       push_s  r1
-       lsr     r1,ilink1,2
-       push_s  r2
-       ldw.as.di r2,[r0,r1]
-       add1    r0,r0,r1
-       ld_s    r1,[sp,4]
-       add_s   r2,r2,1
-       bbit1   r2,16,nostore
-       stw.di  r2,[r0]
-nostore:ld.ab  r2,[sp,8]
-       pop_s   r0
-       j.f     [ilink1]
-#else
-       rtie
-#endif /* !__EM__  && !__HS__ */
-       ENDFUNC(__profil_irq)
-
-; could save one cycle if the counters were allocated at link time and
-; the contents of __profil_offset were pre-computed at link time, like this:
-#if 0
-; __profil_offset needs to be PROVIDEd as __profile_base-text/4
-       .global __profil_offset
-       .balign 4
-__profil_irq:
-       push_s  r0
-       lsr     r0,ilink1,2
-       add1    r0,__profil_offset,r0
-       push_s  r1
-       ldw.di  r1,[r0]
-
-
-       add_s   r1,r1,1
-       bbit1   r1,16,nostore
-       stw.di  r1,[r0]
-nostore:pop_s  r1
-       pop_s   r0
-       j       [ilink1]
-#endif /* 0 */
diff --git a/libgcc/config/arc/gmon/sys/gmon.h 
b/libgcc/config/arc/gmon/sys/gmon.h
deleted file mode 100644
index f17165a..0000000
--- a/libgcc/config/arc/gmon/sys/gmon.h
+++ /dev/null
@@ -1,217 +0,0 @@
-/*-
- * Copyright (c) 1982, 1986, 1992, 1993
- *     The Regents of the University of California.  All rights reserved.
- * Copyright (C) 2007-2016 Free Software Foundation, Inc.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- * 1. Redistributions of source code must retain the above copyright
- *    notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- *    notice, this list of conditions and the following disclaimer in the
- *    documentation and/or other materials provided with the distribution.
- * 4. Neither the name of the University nor the names of its contributors
- *    may be used to endorse or promote products derived from this software
- *    without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
- * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
- * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
- * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
- * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- * SUCH DAMAGE.
- *
- *     @(#)gmon.h      8.2 (Berkeley) 1/4/94
- */
-
-#ifndef        _SYS_GMON_H
-#define        _SYS_GMON_H     1
-
-#if 0
-#include <features.h>
-#include <sys/types.h>
-#else
-#include <sys/types.h>
-#include "machine-gmon.h"
-#define attribute_hidden __attribute__ ((visibility("hidden")))
-#endif
-
-#include <stdint.h>
-
-/*
- * See gmon_out.h for gmon.out format.
- */
-
-/* structure emitted by "gcc -a".  This must match struct bb in
-   gcc/libgcc2.c.  It is OK for gcc to declare a longer structure as
-   long as the members below are present.  */
-struct __bb
-{
-  long                 zero_word;
-  const char           *filename;
-  long                 *counts;
-  long                 ncounts;
-  struct __bb          *next;
-  const unsigned long  *addresses;
-};
-
-extern struct __bb *__bb_head;
-
-/*
- * histogram counters are unsigned shorts (according to the kernel).
- */
-#define        HISTCOUNTER     unsigned short
-
-/*
- * fraction of text space to allocate for histogram counters here, 1/2
- */
-#define        HISTFRACTION    2
-
-/*
- * Fraction of text space to allocate for from hash buckets.
- * The value of HASHFRACTION is based on the minimum number of bytes
- * of separation between two subroutine call points in the object code.
- * Given MIN_SUBR_SEPARATION bytes of separation the value of
- * HASHFRACTION is calculated as:
- *
- *     HASHFRACTION = MIN_SUBR_SEPARATION / (2 * sizeof(short) - 1);
- *
- * For example, on the VAX, the shortest two call sequence is:
- *
- *     calls   $0,(r0)
- *     calls   $0,(r0)
- *
- * which is separated by only three bytes, thus HASHFRACTION is
- * calculated as:
- *
- *     HASHFRACTION = 3 / (2 * 2 - 1) = 1
- *
- * Note that the division above rounds down, thus if MIN_SUBR_FRACTION
- * is less than three, this algorithm will not work!
- *
- * In practice, however, call instructions are rarely at a minimal
- * distance.  Hence, we will define HASHFRACTION to be 2 across all
- * architectures.  This saves a reasonable amount of space for
- * profiling data structures without (in practice) sacrificing
- * any granularity.
- */
-#define        HASHFRACTION    2
-
-/*
- * Percent of text space to allocate for tostructs.
- * This is a heuristic; we will fail with a warning when profiling programs
- * with a very large number of very small functions, but that's
- * normally OK.
- * 2 is probably still a good value for normal programs.
- * Profiling a test case with 64000 small functions will work if
- * you raise this value to 3 and link statically (which bloats the
- * text size, thus raising the number of arcs expected by the heuristic).
- */
-#define ARCDENSITY     3
-
-/*
- * Always allocate at least this many tostructs.  This
- * hides the inadequacy of the ARCDENSITY heuristic, at least
- * for small programs.
- */
-#define MINARCS                50
-
-/*
- * The type used to represent indices into gmonparam.tos[].
- */
-#define        ARCINDEX        u_long
-
-/* 
- * Maximum number of arcs we want to allow.
- * Used to be max representable value of ARCINDEX minus 2, but now 
- * that ARCINDEX is a long, that's too large; we don't really want 
- * to allow a 48 gigabyte table.
- * The old value of 1<<16 wasn't high enough in practice for large C++
- * programs; will 1<<20 be adequate for long?  FIXME
- */
-#define MAXARCS                (1 << 20)
-
-struct tostruct {
-       u_long          selfpc;
-       long            count;
-       ARCINDEX        link;
-};
-
-/*
- * a raw arc, with pointers to the calling site and
- * the called site and a count.
- */
-struct rawarc {
-       u_long  raw_frompc;
-       u_long  raw_selfpc;
-       long    raw_count;
-};
-
-/*
- * general rounding functions.
- */
-#define ROUNDDOWN(x,y) (((x)/(y))*(y))
-#define ROUNDUP(x,y)   ((((x)+(y)-1)/(y))*(y))
-
-/*
- * The profiling data structures are housed in this structure.
- */
-struct gmonparam {
-       long int        state;
-       u_short         *kcount;
-       u_long          kcountsize;
-       ARCINDEX        *froms;
-       u_long          fromssize;
-       struct tostruct *tos;
-       u_long          tossize;
-       long            tolimit;
-       u_long          lowpc;
-       u_long          highpc;
-       u_long          textsize;
-       u_long          hashfraction;
-       long            log_hashfraction;
-};
-extern struct gmonparam _gmonparam;
-
-/*
- * Possible states of profiling.
- */
-#define        GMON_PROF_ON    0
-#define        GMON_PROF_BUSY  1
-#define        GMON_PROF_ERROR 2
-#define        GMON_PROF_OFF   3
-
-/*
- * Sysctl definitions for extracting profiling information from the kernel.
- */
-#define        GPROF_STATE     0       /* int: profiling enabling variable */
-#define        GPROF_COUNT     1       /* struct: profile tick count buffer */
-#define        GPROF_FROMS     2       /* struct: from location hash bucket */
-#define        GPROF_TOS       3       /* struct: destination/count structure 
*/
-#define        GPROF_GMONPARAM 4       /* struct: profiling parameters (see 
above) */
-
-__BEGIN_DECLS
-
-/* Set up data structures and start profiling.  */
-extern void __monstartup (u_long __lowpc, u_long __highpc) __THROW;
-extern void monstartup (u_long __lowpc, u_long __highpc) __THROW;
-
-/* Clean up profiling and write out gmon.out.  */
-extern void _mcleanup (void) __THROW;
-
-extern void __write_profiling (void);
-extern int attribute_hidden __profile_frequency (void);
-
-extern u_long __arc_profile_desc_secstart[], __arc_profile_desc_secend[];
-extern u_long __arc_profile_forward_secstart[], __arc_profile_forward_secend[];
-extern u_long __arc_profile_counters_secstart[];
-
-__END_DECLS
-
-#endif /* sys/gmon.h */
diff --git a/libgcc/config/arc/gmon/sys/gmon_out.h 
b/libgcc/config/arc/gmon/sys/gmon_out.h
deleted file mode 100644
index d1f3b05..0000000
--- a/libgcc/config/arc/gmon/sys/gmon_out.h
+++ /dev/null
@@ -1,55 +0,0 @@
-/* Copyright (C) 2007-2016 Free Software Foundation, Inc.
-   Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-               on behalf of Synopsys Inc.
-
-This file is part of GCC.
-
-GCC 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, or (at your option) any later
-version.
-
-GCC 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.
-
-Under Section 7 of GPL version 3, you are granted additional
-permissions described in the GCC Runtime Library Exception, version
-3.1, as published by the Free Software Foundation.
-
-You should have received a copy of the GNU General Public License and
-a copy of the GCC Runtime Library Exception along with this program;
-see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-<http://www.gnu.org/licenses/>.  */
-
-#define GMON_TAG_TIME_HIST 0
-#define GMON_TAG_CG_ARC 1
-#define GMON_TAG_BB_COUNT 2
-
-#define GMON_MAGIC "gmon"
-#define GMON_VERSION 1
-
-struct arc_gmon_hist_hdr
-{
-  char low_pc[4];
-  char high_pc[4];
-  char hist_size[4];
-  char prof_rate[4];
-  char dimen[15];
-  char dimen_abbrev;
-};
-
-struct gmon_cg_arc_record
-{
-  char afrompc[4];
-  char selfpc[4];
-  char count[4];
-};
-
-struct gmon_hdr
-{
-  char cookie[4];
-  char version[4];
-  char c[12];
-};
diff --git a/libgcc/config/arc/t-arc b/libgcc/config/arc/t-arc
index 3523aed..51a9273 100644
--- a/libgcc/config/arc/t-arc
+++ b/libgcc/config/arc/t-arc
@@ -62,42 +62,5 @@ fp-bit.c: $(srcdir)/fp-bit.c
 
 # .init/.fini section routines
 
-crtg.o: $(srcdir)/config/arc/crtg.S
-       $(crt_compile) -c -x assembler-with-cpp $<
-
-crtgend.o: $(srcdir)/config/arc/crtgend.S
-       $(crt_compile) -c -x assembler-with-cpp $<
-
 crttls.o: $(srcdir)/config/arc/crttls.S
        $(crt_compile) -c -x assembler-with-cpp $<
-
-mcount.o: $(srcdir)/config/arc/gmon/mcount.c
-       $(gcc_compile) -isystem $(srcdir)/config/arc/gmon -c $< \
-       -fcall-saved-r0 -fcall-saved-r1 -fcall-saved-r2 -fcall-saved-r3 \
-       -fcall-saved-r4 -fcall-saved-r5 -fcall-saved-r6 -fcall-saved-r7 \
-       -fomit-frame-pointer
-
-gmon.o: $(srcdir)/config/arc/gmon/gmon.c
-       $(gcc_compile) -isystem $(srcdir)/config/arc/gmon -mno-sdata -c $< \
-       -fno-strict-aliasing \
-       -Wno-extra # suppress inane warning about missing initializer.
-       # Adding initializers for the remaining elements of gmonparam would
-       # make the code more brittle.
-
-prof-freq-stub.o: $(srcdir)/config/arc/gmon/prof-freq-stub.S
-       $(gcc_compile) -isystem $(srcdir)/config/arc/gmon -c $<
-
-prof-freq.o: $(srcdir)/config/arc/gmon/prof-freq.c
-       $(gcc_compile) -isystem $(srcdir)/config/arc/gmon -c $<
-
-dcache_linesz.o: $(srcdir)/config/arc/gmon/dcache_linesz.S
-       $(gcc_compile) -isystem $(srcdir)/config/arc/gmon -c $<
-
-profil.o: $(srcdir)/config/arc/gmon/profil.S
-       $(gcc_compile) -isystem $(srcdir)/config/arc/gmon -c $<
-
-profil-uclibc.o: $(srcdir)/config/arc/gmon/profil-uclibc.c
-       $(gcc_compile) -isystem $(srcdir)/config/arc/gmon -c $<
-
-libgmon.a: mcount.o gmon.o dcache_linesz.o $(PROFILE_OSDEP)
-       $(AR_CREATE_FOR_TARGET) $@ $^
diff --git a/libgcc/config/arc/t-arc-newlib b/libgcc/config/arc/t-arc-newlib
deleted file mode 100644
index f56b052..0000000
--- a/libgcc/config/arc/t-arc-newlib
+++ /dev/null
@@ -1,22 +0,0 @@
-# GCC Makefile fragment for the Synopsys DesignWare ARC CPU with newlib.
-
-# Copyright (C) 2007-2016 Free Software Foundation, Inc.
-# Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-#              on behalf of Synopsys Inc.
-
-# This file is part of GCC.
-
-# GCC 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, or (at your option) any later version.
-
-# GCC 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 GCC; see the file COPYING3.  If not see
-# <http://www.gnu.org/licenses/>.
-
-PROFILE_OSDEP = prof-freq-stub.o profil.o
diff --git a/libgcc/config/arc/t-arc-uClibc b/libgcc/config/arc/t-arc-uClibc
new file mode 100644
index 0000000..81156e8
--- /dev/null
+++ b/libgcc/config/arc/t-arc-uClibc
@@ -0,0 +1,38 @@
+# GCC Makefile fragment for the Synopsys DesignWare ARC700 CPU with uClibc.
+
+# Copyright (C) 2007-2016 Free Software Foundation, Inc.
+# Contributor: Joern Rennecke <joern.renne...@embecosm.com>
+#              on behalf of Synopsys Inc.
+
+# This file is part of GCC.
+
+# GCC 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, or (at your option) any later
+# version.
+
+# GCC 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.
+
+# Under Section 7 of GPL version 3, you are granted additional
+# permissions described in the GCC Runtime Library Exception, version
+# 3.1, as published by the Free Software Foundation.
+
+# You should have received a copy of the GNU General Public License and
+# a copy of the GCC Runtime Library Exception along with this program;
+# see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
+# <http://www.gnu.org/licenses/>.  */
+
+CRTSTUFF_T_CFLAGS += -mno-sdata
+
+# Compile crtbeginS.o and crtendS.o with pic.
+CRTSTUFF_T_CFLAGS_S = $(CRTSTUFF_T_CFLAGS) -fPIC
+
+# Compile libgcc2.a with pic.
+TARGET_LIBGCC2_CFLAGS = -fPIC
+
+# Override t-slibgcc-elf-ver to hide some lib1func
+# routines which should not be called via PLT.
+SHLIB_MAPFILES = libgcc-std.ver $(srcdir)/config/arc/libgcc-excl.ver
diff --git a/libgcc/config/arc/t-arc700-uClibc 
b/libgcc/config/arc/t-arc700-uClibc
deleted file mode 100644
index f5067cc..0000000
--- a/libgcc/config/arc/t-arc700-uClibc
+++ /dev/null
@@ -1,40 +0,0 @@
-# GCC Makefile fragment for the Synopsys DesignWare ARC700 CPU with uClibc.
-
-# Copyright (C) 2007-2016 Free Software Foundation, Inc.
-# Contributor: Joern Rennecke <joern.renne...@embecosm.com>
-#              on behalf of Synopsys Inc.
-
-# This file is part of GCC.
-
-# GCC 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, or (at your option) any later
-# version.
-
-# GCC 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.
-
-# Under Section 7 of GPL version 3, you are granted additional
-# permissions described in the GCC Runtime Library Exception, version
-# 3.1, as published by the Free Software Foundation.
-
-# You should have received a copy of the GNU General Public License and
-# a copy of the GCC Runtime Library Exception along with this program;
-# see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
-# <http://www.gnu.org/licenses/>.  */
-
-CRTSTUFF_T_CFLAGS += -mno-sdata
-
-# Compile crtbeginS.o and crtendS.o with pic.
-CRTSTUFF_T_CFLAGS_S = $(CRTSTUFF_T_CFLAGS) -fPIC
-
-# Compile libgcc2.a with pic.
-TARGET_LIBGCC2_CFLAGS = -fPIC
-
-PROFILE_OSDEP = prof-freq.o
-
-# Override t-slibgcc-elf-ver to hide some lib1func
-# routines which should not be called via PLT.
-SHLIB_MAPFILES = libgcc-std.ver $(srcdir)/config/arc/libgcc-excl.ver
-- 
1.9.1

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