semihost_api.h
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/* 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 "toolchain.h"
#ifdef __cplusplus
extern "C" {
#endif
#if DEVICE_SEMIHOST
#ifndef __CC_ARM
#if defined(__ICCARM__)
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