sim: cleanup obsolete NULL fallback
We require C11 which defines NULL, so drop the inconsistent set of
fallback defines in the codebase.
diff --git a/sim/common/ChangeLog b/sim/common/ChangeLog
index b5b6db2..2cc89c8 100644
--- a/sim/common/ChangeLog
+++ b/sim/common/ChangeLog
@@ -1,5 +1,9 @@
2021-06-09 Mike Frysinger <vapier@gentoo.org>
+ * sim-basics.h (NULL): Delete.
+
+2021-06-09 Mike Frysinger <vapier@gentoo.org>
+
* nrun.c (main): Set default_callback.target_endian to
current_target_byte_order when it's BFD_ENDIAN_UNKNOWN.
diff --git a/sim/common/sim-basics.h b/sim/common/sim-basics.h
index 25c1193..ac63aef 100644
--- a/sim/common/sim-basics.h
+++ b/sim/common/sim-basics.h
@@ -36,11 +36,6 @@
#include <setjmp.h>
-#ifndef NULL
-#define NULL 0
-#endif
-
-
#ifndef min
#define min(a, b) ((a) < (b) ? (a) : (b))
#endif
diff --git a/sim/igen/ChangeLog b/sim/igen/ChangeLog
index 7ef9e1d..22efdf3 100644
--- a/sim/igen/ChangeLog
+++ b/sim/igen/ChangeLog
@@ -1,3 +1,10 @@
+2021-06-09 Mike Frysinger <vapier@gentoo.org>
+
+ * gen-itable.c (NULL): Delete.
+ * gen-model.c (NULL): Likewise.
+ * ld-cache.c (NULL): Likewise.
+ * ld-decode.c (NULL): Likewise.
+
2021-06-05 Mike Frysinger <vapier@gentoo.org>
* local.mk (all-recursive): Delete rule.
diff --git a/sim/igen/gen-itable.c b/sim/igen/gen-itable.c
index 3b50ab6..eedef58 100644
--- a/sim/igen/gen-itable.c
+++ b/sim/igen/gen-itable.c
@@ -34,11 +34,6 @@
#include "gen-itable.h"
-#ifndef NULL
-#define NULL 0
-#endif
-
-
typedef struct _itable_info
{
diff --git a/sim/igen/gen-model.c b/sim/igen/gen-model.c
index f162446..054d7b9 100644
--- a/sim/igen/gen-model.c
+++ b/sim/igen/gen-model.c
@@ -31,10 +31,6 @@
#include "gen-model.h"
-#ifndef NULL
-#define NULL 0
-#endif
-
void
gen_model_h (lf *file, insn_table *table)
diff --git a/sim/igen/ld-cache.c b/sim/igen/ld-cache.c
index 24b6222..defe31d 100644
--- a/sim/igen/ld-cache.c
+++ b/sim/igen/ld-cache.c
@@ -30,10 +30,6 @@
#include "ld-insn.h"
#include "ld-cache.h"
-#ifndef NULL
-#define NULL 0
-#endif
-
enum
{
diff --git a/sim/igen/ld-decode.c b/sim/igen/ld-decode.c
index 75f2427..6736e6b 100644
--- a/sim/igen/ld-decode.c
+++ b/sim/igen/ld-decode.c
@@ -31,10 +31,6 @@
#include "ld-decode.h"
-#ifndef NULL
-#define NULL 0
-#endif
-
static const name_map decode_type_map[] = {
{"normal", normal_decode_rule},
diff --git a/sim/ppc/ChangeLog b/sim/ppc/ChangeLog
index fcd74c6..9289b8e 100644
--- a/sim/ppc/ChangeLog
+++ b/sim/ppc/ChangeLog
@@ -1,3 +1,11 @@
+2021-06-09 Mike Frysinger <vapier@gentoo.org>
+
+ * basics.h (NULL): Delete.
+ * gen-itable.c (NULL): Likewise.
+ * gen-model.c (NULL): Likewise.
+ * ld-cache.c (NULL): Likewise.
+ * ld-decode.c (NULL): Likewise.
+
2021-05-29 Mike Frysinger <vapier@gentoo.org>
* configure.ac (WERROR_CFLAGS): Add -Wno-format for mingw32 hosts.
diff --git a/sim/ppc/basics.h b/sim/ppc/basics.h
index 057cf1a..3eb7c61 100644
--- a/sim/ppc/basics.h
+++ b/sim/ppc/basics.h
@@ -103,10 +103,6 @@
#define NORETURN
#endif
-#ifndef NULL
-#define NULL 0
-#endif
-
#if !defined (__attribute__)
#if (!defined(__GNUC__) \
|| (__GNUC__ < 2) \
diff --git a/sim/ppc/gen-itable.c b/sim/ppc/gen-itable.c
index 7f3139e..a0d1560 100644
--- a/sim/ppc/gen-itable.c
+++ b/sim/ppc/gen-itable.c
@@ -32,11 +32,6 @@
#include "igen.h"
#include "gen-itable.h"
-#ifndef NULL
-#define NULL 0
-#endif
-
-
static void
itable_h_insn(insn_table *entry,
diff --git a/sim/ppc/gen-model.c b/sim/ppc/gen-model.c
index a591d31..1322391 100644
--- a/sim/ppc/gen-model.c
+++ b/sim/ppc/gen-model.c
@@ -30,10 +30,6 @@
#include "gen-model.h"
-#ifndef NULL
-#define NULL 0
-#endif
-
static void
model_c_or_h_data(insn_table *table,
diff --git a/sim/ppc/ld-cache.c b/sim/ppc/ld-cache.c
index 29a7035..611ac7a 100644
--- a/sim/ppc/ld-cache.c
+++ b/sim/ppc/ld-cache.c
@@ -23,10 +23,6 @@
#include "table.h"
#include "ld-cache.h"
-#ifndef NULL
-#define NULL 0
-#endif
-
enum {
ca_type,
diff --git a/sim/ppc/ld-decode.c b/sim/ppc/ld-decode.c
index 3b2e1a0..cee006f 100644
--- a/sim/ppc/ld-decode.c
+++ b/sim/ppc/ld-decode.c
@@ -24,9 +24,6 @@
#include "table.h"
#include "ld-decode.h"
-#ifndef NULL
-#define NULL 0
-#endif
enum {
op_options,
