arch: common: semihost: Move semihost structs into a separate header

Move semihost_x_args structs to include/semihost_types.h so that
semihost implementations can access their elements if needed.

Signed-off-by: Tahsin Mutlugun <Tahsin.Mutlugun@analog.com>

Author: ttmut

arch/common/include/semihost_types.h

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2022, Commonwealth Scientific and Industrial Research
+ * Organisation (CSIRO) ABN 41 687 119 230.
+ *
+ * SPDX-License-Identifier: Apache-2.0
+ */
+
+#ifndef ZEPHYR_INCLUDE_ARCH_COMMON_SEMIHOST_TYPES_H_
+#define ZEPHYR_INCLUDE_ARCH_COMMON_SEMIHOST_TYPES_H_
+
+struct semihost_poll_in_args {
+	long zero;
+} __packed;
+
+struct semihost_open_args {
+	const char *path;
+	long mode;
+	long path_len;
+} __packed;
+
+struct semihost_close_args {
+	long fd;
+} __packed;
+
+struct semihost_flen_args {
+	long fd;
+} __packed;
+
+struct semihost_seek_args {
+	long fd;
+	long offset;
+} __packed;
+
+struct semihost_read_args {
+	long fd;
+	char *buf;
+	long len;
+} __packed;
+
+struct semihost_write_args {
+	long fd;
+	const char *buf;
+	long len;
+} __packed;
+
+#endif /* ZEPHYR_INCLUDE_ARCH_COMMON_SEMIHOST_TYPES_H_ */

arch/common/semihost.c

@@ -8,41 +8,7 @@
 #include <string.h>
 #include <zephyr/kernel.h>
 #include <zephyr/arch/common/semihost.h>
-
-struct semihost_poll_in_args {
-	long zero;
-} __packed;
-
-struct semihost_open_args {
-	const char *path;
-	long mode;
-	long path_len;
-} __packed;
-
-struct semihost_close_args {
-	long fd;
-} __packed;
-
-struct semihost_flen_args {
-	long fd;
-} __packed;
-
-struct semihost_seek_args {
-	long fd;
-	long offset;
-} __packed;
-
-struct semihost_read_args {
-	long fd;
-	char *buf;
-	long len;
-} __packed;
-
-struct semihost_write_args {
-	long fd;
-	const char *buf;
-	long len;
-} __packed;
+#include "semihost_types.h"
 
 char semihost_poll_in(void)
 {