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The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

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mbed 2

This is the mbed 2 library. If you'd like to learn about Mbed OS please see the mbed-os docs.

platform/mbed_semihost_api.h@147:a97add6d7e64, 2017-07-19 (annotated)

Committer:
Kojto
Date:
Wed Jul 19 16:46:19 2017 +0100
Revision:
147:a97add6d7e64
Parent:
138:093f2bd7b9eb
Child:
152:235179ab3f27
Release 147 of the mbed library.

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 138:093f2bd7b9eb 1
<> 138:093f2bd7b9eb 2 /** \addtogroup platform */
<> 138:093f2bd7b9eb 3 /** @{*/
<> 138:093f2bd7b9eb 4 /* mbed Microcontroller Library
<> 138:093f2bd7b9eb 5 * Copyright (c) 2006-2013 ARM Limited
<> 138:093f2bd7b9eb 6 *
<> 138:093f2bd7b9eb 7 * Licensed under the Apache License, Version 2.0 (the "License");
<> 138:093f2bd7b9eb 8 * you may not use this file except in compliance with the License.
<> 138:093f2bd7b9eb 9 * You may obtain a copy of the License at
<> 138:093f2bd7b9eb 10 *
<> 138:093f2bd7b9eb 11 * http://www.apache.org/licenses/LICENSE-2.0
<> 138:093f2bd7b9eb 12 *
<> 138:093f2bd7b9eb 13 * Unless required by applicable law or agreed to in writing, software
<> 138:093f2bd7b9eb 14 * distributed under the License is distributed on an "AS IS" BASIS,
<> 138:093f2bd7b9eb 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 138:093f2bd7b9eb 16 * See the License for the specific language governing permissions and
<> 138:093f2bd7b9eb 17 * limitations under the License.
<> 138:093f2bd7b9eb 18 */
<> 138:093f2bd7b9eb 19 #ifndef MBED_SEMIHOST_H
<> 138:093f2bd7b9eb 20 #define MBED_SEMIHOST_H
<> 138:093f2bd7b9eb 21
<> 138:093f2bd7b9eb 22 #include "device.h"
<> 138:093f2bd7b9eb 23 #include "platform/mbed_toolchain.h"
<> 138:093f2bd7b9eb 24
<> 138:093f2bd7b9eb 25 #ifdef __cplusplus
<> 138:093f2bd7b9eb 26 extern "C" {
<> 138:093f2bd7b9eb 27 #endif
<> 138:093f2bd7b9eb 28
<> 138:093f2bd7b9eb 29 #if DEVICE_SEMIHOST
<> 138:093f2bd7b9eb 30
<> 138:093f2bd7b9eb 31 #ifndef __CC_ARM
<> 138:093f2bd7b9eb 32
<> 138:093f2bd7b9eb 33 #if defined(__ICCARM__)
<> 138:093f2bd7b9eb 34 static inline int __semihost(int reason, const void *arg) {
<> 138:093f2bd7b9eb 35 return __semihosting(reason, (void*)arg);
<> 138:093f2bd7b9eb 36 }
<> 138:093f2bd7b9eb 37 #else
<> 138:093f2bd7b9eb 38
<> 138:093f2bd7b9eb 39 #ifdef __thumb__
<> 138:093f2bd7b9eb 40 # define AngelSWI 0xAB
<> 138:093f2bd7b9eb 41 # define AngelSWIInsn "bkpt"
<> 138:093f2bd7b9eb 42 # define AngelSWIAsm bkpt
<> 138:093f2bd7b9eb 43 #else
<> 138:093f2bd7b9eb 44 # define AngelSWI 0x123456
<> 138:093f2bd7b9eb 45 # define AngelSWIInsn "swi"
<> 138:093f2bd7b9eb 46 # define AngelSWIAsm swi
<> 138:093f2bd7b9eb 47 #endif
<> 138:093f2bd7b9eb 48
<> 138:093f2bd7b9eb 49 static inline int __semihost(int reason, const void *arg) {
<> 138:093f2bd7b9eb 50 int value;
<> 138:093f2bd7b9eb 51
<> 138:093f2bd7b9eb 52 asm volatile (
<> 138:093f2bd7b9eb 53 "mov r0, %1" "\n\t"
<> 138:093f2bd7b9eb 54 "mov r1, %2" "\n\t"
<> 138:093f2bd7b9eb 55 AngelSWIInsn " %a3" "\n\t"
<> 138:093f2bd7b9eb 56 "mov %0, r0"
<> 138:093f2bd7b9eb 57 : "=r" (value) /* output operands */
<> 138:093f2bd7b9eb 58 : "r" (reason), "r" (arg), "i" (AngelSWI) /* input operands */
<> 138:093f2bd7b9eb 59 : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */
<> 138:093f2bd7b9eb 60 );
<> 138:093f2bd7b9eb 61
<> 138:093f2bd7b9eb 62 return value;
<> 138:093f2bd7b9eb 63 }
<> 138:093f2bd7b9eb 64 #endif
<> 138:093f2bd7b9eb 65 #endif
<> 138:093f2bd7b9eb 66
<> 138:093f2bd7b9eb 67 #if DEVICE_LOCALFILESYSTEM
<> 138:093f2bd7b9eb 68 FILEHANDLE semihost_open(const char* name, int openmode);
<> 138:093f2bd7b9eb 69 int semihost_close (FILEHANDLE fh);
<> 138:093f2bd7b9eb 70 int semihost_read (FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode);
<> 138:093f2bd7b9eb 71 int semihost_write (FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode);
<> 138:093f2bd7b9eb 72 int semihost_ensure(FILEHANDLE fh);
<> 138:093f2bd7b9eb 73 long semihost_flen (FILEHANDLE fh);
<> 138:093f2bd7b9eb 74 int semihost_seek (FILEHANDLE fh, long position);
<> 138:093f2bd7b9eb 75 int semihost_istty (FILEHANDLE fh);
<> 138:093f2bd7b9eb 76
<> 138:093f2bd7b9eb 77 int semihost_remove(const char *name);
<> 138:093f2bd7b9eb 78 int semihost_rename(const char *old_name, const char *new_name);
<> 138:093f2bd7b9eb 79 #endif
<> 138:093f2bd7b9eb 80
<> 138:093f2bd7b9eb 81 int semihost_uid(char *uid);
<> 138:093f2bd7b9eb 82 int semihost_reset(void);
<> 138:093f2bd7b9eb 83 int semihost_vbus(void);
<> 138:093f2bd7b9eb 84 int semihost_powerdown(void);
<> 138:093f2bd7b9eb 85 int semihost_exit(void);
<> 138:093f2bd7b9eb 86
<> 138:093f2bd7b9eb 87 int semihost_connected(void);
<> 138:093f2bd7b9eb 88 int semihost_disabledebug(void);
<> 138:093f2bd7b9eb 89
<> 138:093f2bd7b9eb 90 #endif
<> 138:093f2bd7b9eb 91
<> 138:093f2bd7b9eb 92 #ifdef __cplusplus
<> 138:093f2bd7b9eb 93 }
<> 138:093f2bd7b9eb 94 #endif
<> 138:093f2bd7b9eb 95
<> 138:093f2bd7b9eb 96 #endif
<> 138:093f2bd7b9eb 97
<> 138:093f2bd7b9eb 98 /** @}*/