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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@172:65be27845400, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 20:53:29 2019 +0000
Revision:
172:65be27845400
Parent:
170:e95d10626187 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
AnnaBridge 156:ff21514d8981 1
AnnaBridge 156:ff21514d8981 2 /* mbed Microcontroller Library
AnnaBridge 156:ff21514d8981 3 * Copyright (c) 2006-2013 ARM Limited
AnnaBridge 172:65be27845400 4 * SPDX-License-Identifier: Apache-2.0
AnnaBridge 156:ff21514d8981 5 *
AnnaBridge 156:ff21514d8981 6 * Licensed under the Apache License, Version 2.0 (the "License");
AnnaBridge 156:ff21514d8981 7 * you may not use this file except in compliance with the License.
AnnaBridge 156:ff21514d8981 8 * You may obtain a copy of the License at
AnnaBridge 156:ff21514d8981 9 *
AnnaBridge 156:ff21514d8981 10 * http://www.apache.org/licenses/LICENSE-2.0
AnnaBridge 156:ff21514d8981 11 *
AnnaBridge 156:ff21514d8981 12 * Unless required by applicable law or agreed to in writing, software
AnnaBridge 156:ff21514d8981 13 * distributed under the License is distributed on an "AS IS" BASIS,
AnnaBridge 156:ff21514d8981 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
AnnaBridge 156:ff21514d8981 15 * See the License for the specific language governing permissions and
AnnaBridge 156:ff21514d8981 16 * limitations under the License.
AnnaBridge 156:ff21514d8981 17 */
AnnaBridge 156:ff21514d8981 18 #ifndef MBED_SEMIHOST_H
AnnaBridge 156:ff21514d8981 19 #define MBED_SEMIHOST_H
AnnaBridge 156:ff21514d8981 20
AnnaBridge 156:ff21514d8981 21 #include "device.h"
AnnaBridge 156:ff21514d8981 22 #include "platform/mbed_toolchain.h"
AnnaBridge 156:ff21514d8981 23
AnnaBridge 156:ff21514d8981 24 #ifdef __cplusplus
AnnaBridge 156:ff21514d8981 25 extern "C" {
AnnaBridge 156:ff21514d8981 26 #endif
AnnaBridge 156:ff21514d8981 27
AnnaBridge 156:ff21514d8981 28 #if DEVICE_SEMIHOST
AnnaBridge 156:ff21514d8981 29
AnnaBridge 156:ff21514d8981 30 #if !defined(__CC_ARM) && !defined(__ARMCC_VERSION)
AnnaBridge 156:ff21514d8981 31
AnnaBridge 156:ff21514d8981 32 #if defined(__ICCARM__)
AnnaBridge 170:e95d10626187 33 static inline int __semihost(int reason, const void *arg)
AnnaBridge 170:e95d10626187 34 {
AnnaBridge 170:e95d10626187 35 return __semihosting(reason, (void *)arg);
AnnaBridge 156:ff21514d8981 36 }
AnnaBridge 156:ff21514d8981 37 #else
AnnaBridge 156:ff21514d8981 38
AnnaBridge 156:ff21514d8981 39 #ifdef __thumb__
AnnaBridge 156:ff21514d8981 40 # define AngelSWI 0xAB
AnnaBridge 156:ff21514d8981 41 # define AngelSWIInsn "bkpt"
AnnaBridge 156:ff21514d8981 42 # define AngelSWIAsm bkpt
AnnaBridge 156:ff21514d8981 43 #else
AnnaBridge 156:ff21514d8981 44 # define AngelSWI 0x123456
AnnaBridge 156:ff21514d8981 45 # define AngelSWIInsn "swi"
AnnaBridge 156:ff21514d8981 46 # define AngelSWIAsm swi
AnnaBridge 156:ff21514d8981 47 #endif
AnnaBridge 156:ff21514d8981 48
AnnaBridge 170:e95d10626187 49 static inline int __semihost(int reason, const void *arg)
AnnaBridge 170:e95d10626187 50 {
AnnaBridge 156:ff21514d8981 51 int value;
AnnaBridge 156:ff21514d8981 52
AnnaBridge 170:e95d10626187 53 asm volatile(
AnnaBridge 170:e95d10626187 54 "mov r0, %1" "\n\t"
AnnaBridge 170:e95d10626187 55 "mov r1, %2" "\n\t"
AnnaBridge 170:e95d10626187 56 AngelSWIInsn " %a3" "\n\t"
AnnaBridge 170:e95d10626187 57 "mov %0, r0"
AnnaBridge 170:e95d10626187 58 : "=r"(value) /* output operands */
AnnaBridge 170:e95d10626187 59 : "r"(reason), "r"(arg), "i"(AngelSWI) /* input operands */
AnnaBridge 170:e95d10626187 60 : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */
AnnaBridge 156:ff21514d8981 61 );
AnnaBridge 156:ff21514d8981 62
AnnaBridge 156:ff21514d8981 63 return value;
AnnaBridge 156:ff21514d8981 64 }
AnnaBridge 156:ff21514d8981 65 #endif
AnnaBridge 156:ff21514d8981 66 #endif
AnnaBridge 156:ff21514d8981 67
AnnaBridge 156:ff21514d8981 68 #if DEVICE_LOCALFILESYSTEM
AnnaBridge 170:e95d10626187 69 FILEHANDLE semihost_open(const char *name, int openmode);
AnnaBridge 170:e95d10626187 70 int semihost_close(FILEHANDLE fh);
AnnaBridge 170:e95d10626187 71 int semihost_read(FILEHANDLE fh, unsigned char *buffer, unsigned int length, int mode);
AnnaBridge 170:e95d10626187 72 int semihost_write(FILEHANDLE fh, const unsigned char *buffer, unsigned int length, int mode);
AnnaBridge 156:ff21514d8981 73 int semihost_ensure(FILEHANDLE fh);
AnnaBridge 170:e95d10626187 74 long semihost_flen(FILEHANDLE fh);
AnnaBridge 170:e95d10626187 75 int semihost_seek(FILEHANDLE fh, long position);
AnnaBridge 170:e95d10626187 76 int semihost_istty(FILEHANDLE fh);
AnnaBridge 156:ff21514d8981 77
AnnaBridge 156:ff21514d8981 78 int semihost_remove(const char *name);
AnnaBridge 156:ff21514d8981 79 int semihost_rename(const char *old_name, const char *new_name);
AnnaBridge 156:ff21514d8981 80 #endif
AnnaBridge 156:ff21514d8981 81
AnnaBridge 156:ff21514d8981 82 int semihost_uid(char *uid);
AnnaBridge 156:ff21514d8981 83 int semihost_reset(void);
AnnaBridge 156:ff21514d8981 84 int semihost_vbus(void);
AnnaBridge 156:ff21514d8981 85 int semihost_powerdown(void);
AnnaBridge 156:ff21514d8981 86 int semihost_exit(void);
AnnaBridge 156:ff21514d8981 87
AnnaBridge 156:ff21514d8981 88 int semihost_connected(void);
AnnaBridge 156:ff21514d8981 89 int semihost_disabledebug(void);
AnnaBridge 156:ff21514d8981 90
AnnaBridge 156:ff21514d8981 91 #endif
AnnaBridge 156:ff21514d8981 92
AnnaBridge 156:ff21514d8981 93 #ifdef __cplusplus
AnnaBridge 156:ff21514d8981 94 }
AnnaBridge 156:ff21514d8981 95 #endif
AnnaBridge 156:ff21514d8981 96
AnnaBridge 156:ff21514d8981 97 #endif
AnnaBridge 156:ff21514d8981 98
AnnaBridge 158:1c57384330a6 99