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[binutils-gdb] sim: m32c: enable warnings & clean up a bunch


https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=269e9c185f67d477a99574f53ead904d50fddfda

commit 269e9c185f67d477a99574f53ead904d50fddfda
Author: Mike Frysinger <vapier@gentoo.org>
Date:   Wed Apr 1 02:21:21 2015 -0400

    sim: m32c: enable warnings & clean up a bunch
    
    This doesn't clean up all the warnings, just most of them.
    The ones that are left will require some care to unravel.

Diff:
---
 sim/m32c/ChangeLog    |  36 ++++++++++++++++
 sim/m32c/configure    | 115 +++++++++++++++++++++++++++++++++++++++++++++++++-
 sim/m32c/configure.ac |   2 +
 sim/m32c/cpu.h        |  10 +++--
 sim/m32c/gdb-if.c     |  19 +++------
 sim/m32c/load.c       |   6 ++-
 sim/m32c/load.h       |   2 +-
 sim/m32c/m32c.opc     |   8 ++--
 sim/m32c/mem.c        |  16 +++----
 sim/m32c/mem.h        |   4 +-
 sim/m32c/r8c.opc      |   6 +--
 sim/m32c/reg.c        |   9 ++--
 sim/m32c/sample2.c    |   3 +-
 sim/m32c/srcdest.c    |  18 ++++----
 sim/m32c/timer_a.h    |   2 +-
 sim/m32c/trace.c      |   6 ++-
 16 files changed, 208 insertions(+), 54 deletions(-)

diff --git a/sim/m32c/ChangeLog b/sim/m32c/ChangeLog
index ea4925a..814d2dc 100644
--- a/sim/m32c/ChangeLog
+++ b/sim/m32c/ChangeLog
@@ -1,3 +1,39 @@
+2015-04-01  Mike Frysinger  <vapier@gentoo.org>
+
+	* configure.ac: Call SIM_AC_OPTION_WARNINGS.
+	* configure: Regenerate.
+	* cpu.h (decode_opcode, decode_r8c, decode_m32c,
+	trace_register_changes): Convert old style prototypes.
+	(m32c_dump_all_registers): New prototype.
+	* gdb-if.c: Include stdlib.h.
+	(sim_info): Delete.
+	(siggnal, handle_step): Mark static.
+	(sim_resume): Move rc decl to top of scope.
+	* load.c: Include load.h.
+	(decode_opcode); Convert old style prototype.
+	(m32c_load): Move base decl to top of scope.
+	* load.h (m32c_set_mach): Change mach type to unsigned long.
+	* m32c.opc (getbyte, decode_m32c): Convert old style prototypes.
+	(prefix): Convert old style prototype and mark static.
+	* mem.c (mem_ptr, mem_usage_stats, e, mem_get_pc, stdin_ready,
+	m32c_sim_restore_console, update_timer_a): Convert old style
+	prototypes.
+	(mem_put_byte): Mark static.
+	* mem.h (mem_get_pc, m32c_sim_restore_console): Convert old style
+	prototypes.
+	* r8c.opc (getbyte, IMM, decode_r8c): Convert old style prototypes.
+	* reg.c (stack_heap_stats, trace_register_changes,
+	m32c_dump_all_registers): Convert old style prototypes.
+	(put_reg): Move b decl to top of scope.
+	* sample2.c (start): Convert old style prototype.
+	* srcdest.c (disp8, disp16, disp24, disp20): Convert old style
+	prototypes.
+	(decode_srcdest4, decode_jumpdest): Move sd init below decls.
+	* timer_a.h (update_timer_a): Convert old style prototype.
+	* trace.c: Include trace.h.
+	(load_file_and_line): Move file decl to top of scope.
+	(sim_disasm_one): Convert old style prototype.
+
 2015-03-31  Mike Frysinger  <vapier@gentoo.org>
 
 	* config.in, configure: Regenerate.
diff --git a/sim/m32c/configure b/sim/m32c/configure
index ba4ae74..d46cfe1 100755
--- a/sim/m32c/configure
+++ b/sim/m32c/configure
@@ -761,6 +761,9 @@ enable_sim_trace
 enable_sim_profile
 with_pkgversion
 with_bugurl
+enable_werror
+enable_build_warnings
+enable_sim_build_warnings
 '
       ac_precious_vars='build_alias
 host_alias
@@ -1403,6 +1406,11 @@ Optional Features:
   --enable-sim-stdio			Specify whether to use stdio for console input/output.
   --enable-sim-trace=opts		Enable tracing flags
   --enable-sim-profile=opts		Enable profiling flags
+  --enable-werror         treat compile warnings as errors
+  --enable-build-warnings enable build-time compiler warnings if gcc is used
+  --enable-sim-build-warnings
+                          enable SIM specific build-time compiler warnings if
+                          gcc is used
 
 Optional Packages:
   --with-PACKAGE[=ARG]    use PACKAGE [ARG=yes]
@@ -12286,7 +12294,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12289 "configure"
+#line 12297 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12392,7 +12400,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 12395 "configure"
+#line 12403 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -12882,6 +12890,109 @@ sim_link_links="${sim_link_links} targ-vals.def"
 
 
 
+
+# Check whether --enable-werror was given.
+if test "${enable_werror+set}" = set; then :
+  enableval=$enable_werror; case "${enableval}" in
+     yes | y) ERROR_ON_WARNING="yes" ;;
+     no | n)  ERROR_ON_WARNING="no" ;;
+     *) as_fn_error "bad value ${enableval} for --enable-werror" "$LINENO" 5 ;;
+   esac
+fi
+
+
+# Enable -Werror by default when using gcc
+if test "${GCC}" = yes -a -z "${ERROR_ON_WARNING}" ; then
+    ERROR_ON_WARNING=yes
+fi
+
+WERROR_CFLAGS=""
+if test "${ERROR_ON_WARNING}" = yes ; then
+# NOTE: Disabled in the sim dir due to most sims generating warnings.
+#    WERROR_CFLAGS="-Werror"
+     true
+fi
+
+build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith \
+-Wpointer-sign \
+-Wno-unused -Wunused-value -Wunused-function \
+-Wno-switch -Wno-char-subscripts -Wmissing-prototypes
+-Wdeclaration-after-statement -Wempty-body -Wmissing-parameter-type \
+-Wold-style-declaration -Wold-style-definition"
+
+# Enable -Wno-format by default when using gcc on mingw since many
+# GCC versions complain about %I64.
+case "${host}" in
+  *-*-mingw32*) build_warnings="$build_warnings -Wno-format" ;;
+  *) build_warnings="$build_warnings -Wformat-nonliteral" ;;
+esac
+
+# Check whether --enable-build-warnings was given.
+if test "${enable_build_warnings+set}" = set; then :
+  enableval=$enable_build_warnings; case "${enableval}" in
+  yes)	;;
+  no)	build_warnings="-w";;
+  ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
+        build_warnings="${build_warnings} ${t}";;
+  *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
+        build_warnings="${t} ${build_warnings}";;
+  *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
+esac
+if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
+  echo "Setting compiler warning flags = $build_warnings" 6>&1
+fi
+fi
+# Check whether --enable-sim-build-warnings was given.
+if test "${enable_sim_build_warnings+set}" = set; then :
+  enableval=$enable_sim_build_warnings; case "${enableval}" in
+  yes)	;;
+  no)	build_warnings="-w";;
+  ,*)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
+        build_warnings="${build_warnings} ${t}";;
+  *,)   t=`echo "${enableval}" | sed -e "s/,/ /g"`
+        build_warnings="${t} ${build_warnings}";;
+  *)    build_warnings=`echo "${enableval}" | sed -e "s/,/ /g"`;;
+esac
+if test x"$silent" != x"yes" && test x"$build_warnings" != x""; then
+  echo "Setting GDB specific compiler warning flags = $build_warnings" 6>&1
+fi
+fi
+WARN_CFLAGS=""
+if test "x${build_warnings}" != x -a "x$GCC" = xyes
+then
+    { $as_echo "$as_me:${as_lineno-$LINENO}: checking compiler warning flags" >&5
+$as_echo_n "checking compiler warning flags... " >&6; }
+    # Separate out the -Werror flag as some files just cannot be
+    # compiled with it enabled.
+    for w in ${build_warnings}; do
+	case $w in
+	-Werr*) WERROR_CFLAGS=-Werror ;;
+	*) # Check that GCC accepts it
+	    saved_CFLAGS="$CFLAGS"
+	    CFLAGS="$CFLAGS $w"
+	    cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h.  */
+
+int
+main ()
+{
+
+  ;
+  return 0;
+}
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+  WARN_CFLAGS="${WARN_CFLAGS} $w"
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+	    CFLAGS="$saved_CFLAGS"
+	esac
+    done
+    { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${WARN_CFLAGS} ${WERROR_CFLAGS}" >&5
+$as_echo "${WARN_CFLAGS} ${WERROR_CFLAGS}" >&6; }
+fi
+
+
 for ac_header in sys/select.h termios.h sys/socket.h netinet/in.h netinet/tcp.h
 do :
   as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
diff --git a/sim/m32c/configure.ac b/sim/m32c/configure.ac
index 0010f07..6f4559c 100644
--- a/sim/m32c/configure.ac
+++ b/sim/m32c/configure.ac
@@ -24,6 +24,8 @@ sinclude(../common/acinclude.m4)
 
 SIM_AC_COMMON
 
+SIM_AC_OPTION_WARNINGS
+
 AC_CHECK_HEADERS(sys/select.h termios.h sys/socket.h netinet/in.h netinet/tcp.h)
 
 SIM_AC_OUTPUT
diff --git a/sim/m32c/cpu.h b/sim/m32c/cpu.h
index 5d13ece..ce78889 100644
--- a/sim/m32c/cpu.h
+++ b/sim/m32c/cpu.h
@@ -220,9 +220,11 @@ extern unsigned int heaptop;
 extern unsigned int heapbottom;
 
 /* Points to one of the below functions, set by m32c_load().  */
-extern int (*decode_opcode) ();
+extern int (*decode_opcode) (void);
 
-extern int decode_r8c ();
-extern int decode_m32c ();
+extern int decode_r8c (void);
+extern int decode_m32c (void);
 
-extern void trace_register_changes ();
+extern void trace_register_changes (void);
+
+extern void m32c_dump_all_registers (void);
diff --git a/sim/m32c/gdb-if.c b/sim/m32c/gdb-if.c
index 62ec28c..be00545 100644
--- a/sim/m32c/gdb-if.c
+++ b/sim/m32c/gdb-if.c
@@ -22,6 +22,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 #include <stdio.h>
 #include <assert.h>
 #include <signal.h>
+#include <stdlib.h>
 #include <string.h>
 #include <ctype.h>
 
@@ -509,22 +510,14 @@ sim_store_register (SIM_DESC sd, int regno, unsigned char *buf, int length)
   return size;
 }
 
-void
-sim_info (SIM_DESC sd, int verbose)
-{
-  check_desc (sd);
-
-  printf ("The m32c minisim doesn't collect any statistics.\n");
-}
-
 static volatile int stop;
 static enum sim_stop reason;
-int siggnal;
+static int siggnal;
 
 
 /* Given a signal number used by the M32C bsp (that is, newlib),
    return a target signal number used by GDB.  */
-int
+static int
 m32c_signal_to_target (int m32c)
 {
   switch (m32c)
@@ -560,7 +553,7 @@ m32c_signal_to_target (int m32c)
 
 /* Take a step return code RC and set up the variables consulted by
    sim_stop_reason appropriately.  */
-void
+static void
 handle_step (int rc)
 {
   if (M32C_STEPPED (rc) || M32C_HIT_BREAK (rc))
@@ -609,6 +602,8 @@ sim_resume (SIM_DESC sd, int step, int sig_to_deliver)
          interrupt signal handler.  */
       for (;;)
 	{
+	  int rc;
+
 	  if (stop)
 	    {
 	      stop = 0;
@@ -617,7 +612,7 @@ sim_resume (SIM_DESC sd, int step, int sig_to_deliver)
 	      break;
 	    }
 
-	  int rc = decode_opcode ();
+	  rc = decode_opcode ();
 #ifdef TIMER_A
 	  update_timer_a ();
 #endif
diff --git a/sim/m32c/load.c b/sim/m32c/load.c
index e763773..0543b6d 100644
--- a/sim/m32c/load.c
+++ b/sim/m32c/load.c
@@ -27,8 +27,9 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #include "cpu.h"
 #include "mem.h"
+#include "load.h"
 
-int (*decode_opcode) () = 0;
+int (*decode_opcode) (void) = 0;
 int default_machine = 0;
 
 void
@@ -88,12 +89,13 @@ m32c_load (bfd * prog)
 	{
 	  char *buf;
 	  bfd_size_type size;
+	  bfd_vma base;
 
 	  size = bfd_get_section_size (s);
 	  if (size <= 0)
 	    continue;
 
-	  bfd_vma base = bfd_section_lma (prog, s);
+	  base = bfd_section_lma (prog, s);
 	  if (verbose)
 	    fprintf (stderr, "[load a=%08x s=%08x %s]\n",
 		     (int) base, (int) size, bfd_get_section_name (prog, s));
diff --git a/sim/m32c/load.h b/sim/m32c/load.h
index b9161a0..b96a049 100644
--- a/sim/m32c/load.h
+++ b/sim/m32c/load.h
@@ -23,5 +23,5 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 extern int default_machine;
 
-void m32c_set_mach (int mach);
+void m32c_set_mach (unsigned long mach);
 void m32c_load (bfd *);
diff --git a/sim/m32c/m32c.opc b/sim/m32c/m32c.opc
index d345694..7462b1d 100644
--- a/sim/m32c/m32c.opc
+++ b/sim/m32c/m32c.opc
@@ -32,7 +32,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 #define tprintf if (trace) printf
 
 static unsigned char
-getbyte ()
+getbyte (void)
 {
   int tsave = trace;
   unsigned char b;
@@ -105,8 +105,8 @@ IMM(int bytes)
 
 /* Indicate which sorts of prefixes are allowed for the current
    opcode.  */
-void
-prefix (src_allowed, dest_allowed, index_bytewidth)
+static void
+prefix (int src_allowed, int dest_allowed, int index_bytewidth)
 {
   /* At the moment, we don't do anything with this information.  We
      just wanted to get the information entered in some
@@ -394,7 +394,7 @@ static int pcs[16];
 static int ipcs = 0;
 
 int
-decode_m32c()
+decode_m32c (void)
 {
   unsigned char op[40];
   int opi;
diff --git a/sim/m32c/mem.c b/sim/m32c/mem.c
index 0e4fc77..e3202db 100644
--- a/sim/m32c/mem.c
+++ b/sim/m32c/mem.c
@@ -89,7 +89,7 @@ init_mem (void)
 }
 
 static unsigned char *
-mem_ptr (address)
+mem_ptr (int address)
 {
   static int recursing = 0;
   int pt1 = (address >> (L2_BITS + OFF_BITS)) & ((1 << L1_BITS) - 1);
@@ -139,7 +139,7 @@ mcs (int isput, int bytes)
 }
 
 void
-mem_usage_stats ()
+mem_usage_stats (void)
 {
   int i, j;
   int rstart = 0;
@@ -192,7 +192,7 @@ s (int address, char *dir)
 
 #define S(d) if (trace) s(address, d)
 static void
-e ()
+e (void)
 {
   if (!trace)
     return;
@@ -205,7 +205,7 @@ e ()
 
 extern int m32c_disassemble;
 
-void
+static void
 mem_put_byte (int address, unsigned char value)
 {
   unsigned char *m;
@@ -376,7 +376,7 @@ mem_put_blk (int address, const void *bufptr, int nbytes)
 }
 
 unsigned char
-mem_get_pc ()
+mem_get_pc (void)
 {
   unsigned char *m = mem_ptr (regs.r_pc & membus_mask);
   COUNT (0, 0);
@@ -388,7 +388,7 @@ static int console_raw = 0;
 static struct termios oattr;
 
 static int
-stdin_ready ()
+stdin_ready (void)
 {
   fd_set ifd;
   int n;
@@ -403,7 +403,7 @@ stdin_ready ()
 }
 
 void
-m32c_sim_restore_console ()
+m32c_sim_restore_console (void)
 {
   if (console_raw)
     tcsetattr (m32c_console_ifd, TCSANOW, &oattr);
@@ -557,7 +557,7 @@ sign_ext (int v, int bits)
 
 #if TIMER_A
 void
-update_timer_a ()
+update_timer_a (void)
 {
   if (timer_a.bsr & 1)
     {
diff --git a/sim/m32c/mem.h b/sim/m32c/mem.h
index f79426f..6d804b1 100644
--- a/sim/m32c/mem.h
+++ b/sim/m32c/mem.h
@@ -29,7 +29,7 @@ void mem_put_si (int address, unsigned long value);
 
 void mem_put_blk (int address, const void *bufptr, int nbytes);
 
-unsigned char mem_get_pc ();
+unsigned char mem_get_pc (void);
 
 unsigned char mem_get_qi (int address);
 unsigned short mem_get_hi (int address);
@@ -40,6 +40,6 @@ void mem_get_blk (int address, void *bufptr, int nbytes);
 
 int sign_ext (int v, int bits);
 
-void m32c_sim_restore_console ();
+void m32c_sim_restore_console (void);
 
 extern int m32c_use_raw_console;
diff --git a/sim/m32c/r8c.opc b/sim/m32c/r8c.opc
index b4a4f6d..34f0af4 100644
--- a/sim/m32c/r8c.opc
+++ b/sim/m32c/r8c.opc
@@ -32,7 +32,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 #define tprintf if (trace) printf
 
 static unsigned char
-getbyte ()
+getbyte (void)
 {
   int tsave = trace;
   unsigned char b;
@@ -77,7 +77,7 @@ unsupported (char *tag, int orig_pc)
 }
 
 static int
-IMM(bw)
+IMM (int bw)
 {
   int rv = getbyte ();
   if (bw)
@@ -306,7 +306,7 @@ static int bmcnd_cond_map[] = {
 };
 
 int
-decode_r8c()
+decode_r8c (void)
 {
   unsigned char op[40];
   int opi = 0;
diff --git a/sim/m32c/reg.c b/sim/m32c/reg.c
index 3fdc2e6..be7d81c 100644
--- a/sim/m32c/reg.c
+++ b/sim/m32c/reg.c
@@ -219,7 +219,7 @@ get_reg_ll (reg_id id)
 static int highest_sp = 0, lowest_sp = 0xffffff;
 
 void
-stack_heap_stats ()
+stack_heap_stats (void)
 {
   printf ("heap:  %08x - %08x (%d bytes)\n", heapbottom, heaptop,
 	  heaptop - heapbottom);
@@ -230,10 +230,11 @@ stack_heap_stats ()
 void
 put_reg (reg_id id, unsigned int v)
 {
+  reg_bank_type *b = regs.r + (FLAG_B ? 1 : 0);
+
   if (trace > ((id != pc) ? 0 : 1))
     printf ("put_reg (%s) = %0*x\n", reg_names[id], reg_bytes[id] * 2, v);
 
-  reg_bank_type *b = regs.r + (FLAG_B ? 1 : 0);
   switch (id)
     {
     case r0:
@@ -605,7 +606,7 @@ print_flags (int f)
     }
 
 void
-trace_register_changes ()
+trace_register_changes (void)
 {
   if (!trace)
     return;
@@ -646,7 +647,7 @@ trace_register_changes ()
 	 reg_bytes[id]*2, (unsigned int)regs.f);       \
 
 void
-m32c_dump_all_registers ()
+m32c_dump_all_registers (void)
 {
   printf ("\033[36mREGS:");
   DRC (r[0].r_r0, "r0", r0);
diff --git a/sim/m32c/sample2.c b/sim/m32c/sample2.c
index f6aec0e..776989c 100644
--- a/sim/m32c/sample2.c
+++ b/sim/m32c/sample2.c
@@ -21,7 +21,8 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 /* See the 'sample2.x' target in Makefile.in.  */
 void exit (int);
 
-start ()
+void
+start (void)
 {
   foo (1, 2, 3, 4);
   exit (5);
diff --git a/sim/m32c/srcdest.c b/sim/m32c/srcdest.c
index a2415a8..ada2a9b 100644
--- a/sim/m32c/srcdest.c
+++ b/sim/m32c/srcdest.c
@@ -31,7 +31,7 @@ static int src_addend = 0;
 static int dest_addend = 0;
 
 static int
-disp8 ()
+disp8 (void)
 {
   int rv;
   int tsave = trace;
@@ -45,7 +45,7 @@ disp8 ()
 }
 
 static int
-disp16 ()
+disp16 (void)
 {
   int rv;
   int tsave = trace;
@@ -59,7 +59,7 @@ disp16 ()
 }
 
 static int
-disp24 ()
+disp24 (void)
 {
   int rv;
   int tsave = trace;
@@ -73,7 +73,7 @@ disp24 ()
 }
 
 static int
-disp20 ()
+disp20 (void)
 {
   return disp24 () & 0x000fffff;
 }
@@ -117,8 +117,6 @@ srcdest
 decode_srcdest4 (int destcode, int bw)
 {
   srcdest sd;
-  sd.bytes = bw ? 2 : 1;
-  sd.mem = (destcode >= 6) ? 1 : 0;
   static const char *dc_wnames[16] = { "r0", "r1", "r2", "r3",
     "a0", "a1", "[a0]", "[a1]",
     "disp8[a0]", "disp8[a1]", "disp8[sb]", "disp8[fb]",
@@ -126,6 +124,9 @@ decode_srcdest4 (int destcode, int bw)
   };
   static const char *dc_bnames[4] = { "r0l", "r0h", "r1l", "r1h" };;
 
+  sd.bytes = bw ? 2 : 1;
+  sd.mem = (destcode >= 6) ? 1 : 0;
+
   if (trace)
     {
       const char *n = dc_wnames[destcode];
@@ -199,8 +200,6 @@ srcdest
 decode_jumpdest (int destcode, int w)
 {
   srcdest sd;
-  sd.bytes = w ? 2 : 3;
-  sd.mem = (destcode >= 6) ? 1 : 0;
   static const char *dc_wnames[16] = { "r0", "r1", "r2", "r3",
     "a0", "a1", "[a0]", "[a1]",
     "disp8[a0]", "disp8[a1]", "disp8[sb]", "disp8[fb]",
@@ -208,6 +207,9 @@ decode_jumpdest (int destcode, int w)
   };
   static const char *dc_anames[4] = { "r0l", "r0h", "r1l", "r1h" };
 
+  sd.bytes = w ? 2 : 3;
+  sd.mem = (destcode >= 6) ? 1 : 0;
+
   if (trace)
     {
       const char *n = dc_wnames[destcode];
diff --git a/sim/m32c/timer_a.h b/sim/m32c/timer_a.h
index abf5883..2037ca3 100644
--- a/sim/m32c/timer_a.h
+++ b/sim/m32c/timer_a.h
@@ -11,4 +11,4 @@ typedef struct
 
 extern Timer_A timer_a;
 
-extern void update_timer_a ();
+extern void update_timer_a (void);
diff --git a/sim/m32c/trace.c b/sim/m32c/trace.c
index f98790c..2c5009f 100644
--- a/sim/m32c/trace.c
+++ b/sim/m32c/trace.c
@@ -34,6 +34,7 @@ along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 #include "cpu.h"
 #include "mem.h"
 #include "load.h"
+#include "trace.h"
 
 static int
 sim_dis_read (bfd_vma memaddr, bfd_byte * ptr, unsigned int length,
@@ -128,6 +129,7 @@ load_file_and_line (const char *filename, int lineno)
       int i;
       struct stat s;
       const char *found_filename, *slash;
+      FILE *file;
 
       found_filename = filename;
       while (1)
@@ -145,7 +147,7 @@ load_file_and_line (const char *filename, int lineno)
       files = f;
       f->filename = strdup (filename);
       f->data = (char *) malloc (s.st_size + 2);
-      FILE *file = fopen (found_filename, "rb");
+      file = fopen (found_filename, "rb");
       fread (f->data, 1, s.st_size, file);
       f->data[s.st_size] = 0;
       fclose (file);
@@ -174,7 +176,7 @@ load_file_and_line (const char *filename, int lineno)
 }
 
 void
-sim_disasm_one ()
+sim_disasm_one (void)
 {
   static int initted = 0;
   static asymbol **symtab = 0;


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