kushagra brahmbhatt / IoT_Security

IoT Home Alarm System

Dependents:   IoTBurglar_and_Fire_AlarmSystem

semihost_api.h@0:2f388b030837, 2016-04-29 (annotated)

Committer:
kbrahmbhatt6
Date:
Fri Apr 29 06:59:59 2016 +0000
Revision:
0:2f388b030837
1

Who changed what in which revision?

UserRevisionLine numberNew contents of line
kbrahmbhatt6 0:2f388b030837 1 /* mbed Microcontroller Library
kbrahmbhatt6 0:2f388b030837 2 * Copyright (c) 2006-2013 ARM Limited
kbrahmbhatt6 0:2f388b030837 3 *
kbrahmbhatt6 0:2f388b030837 4 * Licensed under the Apache License, Version 2.0 (the "License");
kbrahmbhatt6 0:2f388b030837 5 * you may not use this file except in compliance with the License.
kbrahmbhatt6 0:2f388b030837 6 * You may obtain a copy of the License at
kbrahmbhatt6 0:2f388b030837 7 *
kbrahmbhatt6 0:2f388b030837 8 * http://www.apache.org/licenses/LICENSE-2.0
kbrahmbhatt6 0:2f388b030837 9 *
kbrahmbhatt6 0:2f388b030837 10 * Unless required by applicable law or agreed to in writing, software
kbrahmbhatt6 0:2f388b030837 11 * distributed under the License is distributed on an "AS IS" BASIS,
kbrahmbhatt6 0:2f388b030837 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
kbrahmbhatt6 0:2f388b030837 13 * See the License for the specific language governing permissions and
kbrahmbhatt6 0:2f388b030837 14 * limitations under the License.
kbrahmbhatt6 0:2f388b030837 15 */
kbrahmbhatt6 0:2f388b030837 16 #ifndef MBED_SEMIHOST_H
kbrahmbhatt6 0:2f388b030837 17 #define MBED_SEMIHOST_H
kbrahmbhatt6 0:2f388b030837 18
kbrahmbhatt6 0:2f388b030837 19 #include "device.h"
kbrahmbhatt6 0:2f388b030837 20 #include "toolchain.h"
kbrahmbhatt6 0:2f388b030837 21
kbrahmbhatt6 0:2f388b030837 22 #ifdef __cplusplus
kbrahmbhatt6 0:2f388b030837 23 extern "C" {
kbrahmbhatt6 0:2f388b030837 24 #endif
kbrahmbhatt6 0:2f388b030837 25
kbrahmbhatt6 0:2f388b030837 26 #if DEVICE_SEMIHOST
kbrahmbhatt6 0:2f388b030837 27
kbrahmbhatt6 0:2f388b030837 28 #ifndef __CC_ARM
kbrahmbhatt6 0:2f388b030837 29
kbrahmbhatt6 0:2f388b030837 30 #if defined(__ICCARM__)
kbrahmbhatt6 0:2f388b030837 31 inline int __semihost(int reason, const void *arg) {
kbrahmbhatt6 0:2f388b030837 32 return __semihosting(reason, (void*)arg);
kbrahmbhatt6 0:2f388b030837 33 }
kbrahmbhatt6 0:2f388b030837 34 #else
kbrahmbhatt6 0:2f388b030837 35
kbrahmbhatt6 0:2f388b030837 36 #ifdef __thumb__
kbrahmbhatt6 0:2f388b030837 37 # define AngelSWI 0xAB
kbrahmbhatt6 0:2f388b030837 38 # define AngelSWIInsn "bkpt"
kbrahmbhatt6 0:2f388b030837 39 # define AngelSWIAsm bkpt
kbrahmbhatt6 0:2f388b030837 40 #else
kbrahmbhatt6 0:2f388b030837 41 # define AngelSWI 0x123456
kbrahmbhatt6 0:2f388b030837 42 # define AngelSWIInsn "swi"
kbrahmbhatt6 0:2f388b030837 43 # define AngelSWIAsm swi
kbrahmbhatt6 0:2f388b030837 44 #endif
kbrahmbhatt6 0:2f388b030837 45
kbrahmbhatt6 0:2f388b030837 46 static inline int __semihost(int reason, const void *arg) {
kbrahmbhatt6 0:2f388b030837 47 int value;
kbrahmbhatt6 0:2f388b030837 48
kbrahmbhatt6 0:2f388b030837 49 asm volatile (
kbrahmbhatt6 0:2f388b030837 50 "mov r0, %1" "\n\t"
kbrahmbhatt6 0:2f388b030837 51 "mov r1, %2" "\n\t"
kbrahmbhatt6 0:2f388b030837 52 AngelSWIInsn " %a3" "\n\t"
kbrahmbhatt6 0:2f388b030837 53 "mov %0, r0"
kbrahmbhatt6 0:2f388b030837 54 : "=r" (value) /* output operands */
kbrahmbhatt6 0:2f388b030837 55 : "r" (reason), "r" (arg), "i" (AngelSWI) /* input operands */
kbrahmbhatt6 0:2f388b030837 56 : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */
kbrahmbhatt6 0:2f388b030837 57 );
kbrahmbhatt6 0:2f388b030837 58
kbrahmbhatt6 0:2f388b030837 59 return value;
kbrahmbhatt6 0:2f388b030837 60 }
kbrahmbhatt6 0:2f388b030837 61 #endif
kbrahmbhatt6 0:2f388b030837 62 #endif
kbrahmbhatt6 0:2f388b030837 63
kbrahmbhatt6 0:2f388b030837 64 #if DEVICE_LOCALFILESYSTEM
kbrahmbhatt6 0:2f388b030837 65 FILEHANDLE semihost_open(const char* name, int openmode);
kbrahmbhatt6 0:2f388b030837 66 int semihost_close (FILEHANDLE fh);
kbrahmbhatt6 0:2f388b030837 67 int semihost_read (FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode);
kbrahmbhatt6 0:2f388b030837 68 int semihost_write (FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode);
kbrahmbhatt6 0:2f388b030837 69 int semihost_ensure(FILEHANDLE fh);
kbrahmbhatt6 0:2f388b030837 70 long semihost_flen (FILEHANDLE fh);
kbrahmbhatt6 0:2f388b030837 71 int semihost_seek (FILEHANDLE fh, long position);
kbrahmbhatt6 0:2f388b030837 72 int semihost_istty (FILEHANDLE fh);
kbrahmbhatt6 0:2f388b030837 73
kbrahmbhatt6 0:2f388b030837 74 int semihost_remove(const char *name);
kbrahmbhatt6 0:2f388b030837 75 int semihost_rename(const char *old_name, const char *new_name);
kbrahmbhatt6 0:2f388b030837 76 #endif
kbrahmbhatt6 0:2f388b030837 77
kbrahmbhatt6 0:2f388b030837 78 int semihost_uid(char *uid);
kbrahmbhatt6 0:2f388b030837 79 int semihost_reset(void);
kbrahmbhatt6 0:2f388b030837 80 int semihost_vbus(void);
kbrahmbhatt6 0:2f388b030837 81 int semihost_powerdown(void);
kbrahmbhatt6 0:2f388b030837 82 int semihost_exit(void);
kbrahmbhatt6 0:2f388b030837 83
kbrahmbhatt6 0:2f388b030837 84 int semihost_connected(void);
kbrahmbhatt6 0:2f388b030837 85 int semihost_disabledebug(void);
kbrahmbhatt6 0:2f388b030837 86
kbrahmbhatt6 0:2f388b030837 87 #endif
kbrahmbhatt6 0:2f388b030837 88
kbrahmbhatt6 0:2f388b030837 89 #ifdef __cplusplus
kbrahmbhatt6 0:2f388b030837 90 }
kbrahmbhatt6 0:2f388b030837 91 #endif
kbrahmbhatt6 0:2f388b030837 92
kbrahmbhatt6 0:2f388b030837 93 #endif