[PATCH 5/5] sim/iq2000: silence pointer-sign warnings

[Andrew Burgess <aburgess@redhat.com>]

When building the iq2000 simulator I see a few warnings like this:

  /tmp/build/sim/../../src/sim/iq2000/iq2000.c: In function ‘fetch_str’:
  /tmp/build/sim/../../src/sim/iq2000/iq2000.c:50:54: error: pointer targets in passing argument 3 of ‘sim_read’ differ in signedness [-Werror=pointer-sign]
     50 |   sim_read (CPU_STATE (current_cpu), CPU2DATA(addr), buf, nr);
        |                                                      ^~~
        |                                                      |
        |                                                      char *

I've silenced these warnings by casting buf to 'unsigned char *'.
With this change I now see no warnings when compiling iq2000.c, so
I've removed the line from Makefile.in that disables -Werror.

Makefile.in was also disabling -Werror when compiling mloop.c,
however, I'm not seeing any warnings when compiling that file, so I've
removed the -Werror disable in that case too.
---
 sim/iq2000/Makefile.in | 3 ---
 sim/iq2000/iq2000.c    | 9 ++++++---
 2 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/sim/iq2000/Makefile.in b/sim/iq2000/Makefile.in
index 9f64adcecb4..757ed28ef6b 100644
--- a/sim/iq2000/Makefile.in
+++ b/sim/iq2000/Makefile.in
@@ -37,9 +37,6 @@ ALL_CPU_CFLAGS = -DHAVE_CPU_IQ2000BF -DHAVE_CPU_IQ10BF
 
 SIM_EXTRA_CLEAN = iq2000-clean
 
-# Some modules don't build cleanly yet.
-iq2000.o mloop.o: SIM_WERROR_CFLAGS =
-
 ## COMMON_POST_CONFIG_FRAG
 
 arch = iq2000
diff --git a/sim/iq2000/iq2000.c b/sim/iq2000/iq2000.c
index b685a31b07a..2c01434c308 100644
--- a/sim/iq2000/iq2000.c
+++ b/sim/iq2000/iq2000.c
@@ -47,7 +47,8 @@ fetch_str (SIM_CPU *current_cpu, PCADDR pc, DI addr)
                           pc, read_map, CPU2DATA(addr + nr)) != 0)
     nr++;
   buf = NZALLOC (char, nr + 1);
-  sim_read (CPU_STATE (current_cpu), CPU2DATA(addr), buf, nr);
+  sim_read (CPU_STATE (current_cpu), CPU2DATA(addr), (unsigned char *) buf,
+	    nr);
   return buf;
 }
 
@@ -82,7 +83,8 @@ do_syscall (SIM_CPU *current_cpu, PCADDR pc)
 
     case TARGET_NEWLIB_SYS_write:
       buf = zalloc (PARM3);
-      sim_read (CPU_STATE (current_cpu), CPU2DATA(PARM2), buf, PARM3);
+      sim_read (CPU_STATE (current_cpu), CPU2DATA(PARM2),
+		(unsigned char *) buf, PARM3);
       SET_H_GR (ret_reg,
 		sim_io_write (CPU_STATE (current_cpu),
 			      PARM1, buf, PARM3));
@@ -105,7 +107,8 @@ do_syscall (SIM_CPU *current_cpu, PCADDR pc)
       SET_H_GR (ret_reg,
 		sim_io_read (CPU_STATE (current_cpu),
 			     PARM1, buf, PARM3));
-      sim_write (CPU_STATE (current_cpu), CPU2DATA(PARM2), buf, PARM3);
+      sim_write (CPU_STATE (current_cpu), CPU2DATA(PARM2),
+		 (unsigned char *) buf, PARM3);
       free (buf);
       break;
 	    
-- 
2.25.4