include: split target_long definition from cpu-defs

While we will continue to include this via cpu-defs it is useful to be
able to define this separately for 32 and 64 bit versions of an
otherwise target independent compilation unit.

Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Signed-off-by: Alex Bennée <alex.bennee@linaro.org>

Message-Id: <20230302190846.2593720-25-alex.bennee@linaro.org>
Message-Id: <20230303025805.625589-25-richard.henderson@linaro.org>

MAINTAINERS

@@ -137,6 +137,7 @@ F: docs/devel/tcg*
 F: include/exec/cpu*.h
 F: include/exec/exec-all.h
 F: include/exec/tb-flush.h
+F: include/exec/target_long.h
 F: include/exec/helper*.h
 F: include/sysemu/cpus.h
 F: include/sysemu/tcg.h

include/exec/cpu-defs.h

@@ -55,24 +55,7 @@
 # endif
 #endif
 
-#define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)
-
-/* target_ulong is the type of a virtual address */
-#if TARGET_LONG_SIZE == 4
-typedef int32_t target_long;
-typedef uint32_t target_ulong;
-#define TARGET_FMT_lx "%08x"
-#define TARGET_FMT_ld "%d"
-#define TARGET_FMT_lu "%u"
-#elif TARGET_LONG_SIZE == 8
-typedef int64_t target_long;
-typedef uint64_t target_ulong;
-#define TARGET_FMT_lx "%016" PRIx64
-#define TARGET_FMT_ld "%" PRId64
-#define TARGET_FMT_lu "%" PRIu64
-#else
-#error TARGET_LONG_SIZE undefined
-#endif
+#include "exec/target_long.h"
 
 #if !defined(CONFIG_USER_ONLY) && defined(CONFIG_TCG)
 

include/exec/target_long.h

@@ -0,0 +1,42 @@
+/*
+ * Target Long Definitions
+ *
+ * Copyright (c) 2003 Fabrice Bellard
+ * Copyright (c) 2023 Linaro Ltd
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#ifndef _TARGET_LONG_H_
+#define _TARGET_LONG_H_
+
+/*
+ * Usually this should only be included via cpu-defs.h however for
+ * certain cases where we want to build only two versions of a binary
+ * object we can include directly. However the build-system must
+ * ensure TARGET_LONG_BITS is defined directly.
+ */
+#ifndef TARGET_LONG_BITS
+#error TARGET_LONG_BITS not defined
+#endif
+
+#define TARGET_LONG_SIZE (TARGET_LONG_BITS / 8)
+
+/* target_ulong is the type of a virtual address */
+#if TARGET_LONG_SIZE == 4
+typedef int32_t target_long;
+typedef uint32_t target_ulong;
+#define TARGET_FMT_lx "%08x"
+#define TARGET_FMT_ld "%d"
+#define TARGET_FMT_lu "%u"
+#elif TARGET_LONG_SIZE == 8
+typedef int64_t target_long;
+typedef uint64_t target_ulong;
+#define TARGET_FMT_lx "%016" PRIx64
+#define TARGET_FMT_ld "%" PRId64
+#define TARGET_FMT_lu "%" PRIu64
+#else
+#error TARGET_LONG_SIZE undefined
+#endif
+
+#endif /* _TARGET_LONG_H_ */