Diff: mbed-dev-master/platform/mbed_semihost_api.h

Revision:

0:bb348c97df44

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed-dev-master/platform/mbed_semihost_api.h	Wed Sep 16 01:11:49 2020 +0000
@@ -0,0 +1,98 @@
+
+/* mbed Microcontroller Library
+ * Copyright (c) 2006-2013 ARM Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+#ifndef MBED_SEMIHOST_H
+#define MBED_SEMIHOST_H
+
+#include "device.h"
+#include "platform/mbed_toolchain.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#if DEVICE_SEMIHOST
+
+#if !defined(__CC_ARM) && !defined(__ARMCC_VERSION)
+
+#if defined(__ICCARM__)
+static inline int __semihost(int reason, const void *arg)
+{
+    return __semihosting(reason, (void *)arg);
+}
+#else
+
+#ifdef __thumb__
+#   define AngelSWI            0xAB
+#   define AngelSWIInsn        "bkpt"
+#   define AngelSWIAsm          bkpt
+#else
+#   define AngelSWI            0x123456
+#   define AngelSWIInsn        "swi"
+#   define AngelSWIAsm          swi
+#endif
+
+static inline int __semihost(int reason, const void *arg)
+{
+    int value;
+
+    asm volatile(
+        "mov r0, %1"          "\n\t"
+        "mov r1, %2"          "\n\t"
+        AngelSWIInsn " %a3"   "\n\t"
+        "mov %0, r0"
+        : "=r"(value)                                          /* output operands             */
+        : "r"(reason), "r"(arg), "i"(AngelSWI)                 /* input operands              */
+        : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc"   /* list of clobbered registers */
+    );
+
+    return value;
+}
+#endif
+#endif
+
+#if DEVICE_LOCALFILESYSTEM
+FILEHANDLE semihost_open(const char *name, int openmode);
+int semihost_close(FILEHANDLE fh);
+int semihost_read(FILEHANDLE fh, unsigned char *buffer, unsigned int length, int mode);
+int semihost_write(FILEHANDLE fh, const unsigned char *buffer, unsigned int length, int mode);
+int semihost_ensure(FILEHANDLE fh);
+long semihost_flen(FILEHANDLE fh);
+int semihost_seek(FILEHANDLE fh, long position);
+int semihost_istty(FILEHANDLE fh);
+
+int semihost_remove(const char *name);
+int semihost_rename(const char *old_name, const char *new_name);
+#endif
+
+int semihost_uid(char *uid);
+int semihost_reset(void);
+int semihost_vbus(void);
+int semihost_powerdown(void);
+int semihost_exit(void);
+
+int semihost_connected(void);
+int semihost_disabledebug(void);
+
+#endif
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+