mirror of https://github.com/ARMmbed/mbed-os.git
99 lines
2.6 KiB
C
99 lines
2.6 KiB
C
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/* mbed Microcontroller Library
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* Copyright (c) 2006-2019 ARM Limited
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* SPDX-License-Identifier: Apache-2.0
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef MBED_SEMIHOST_H
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#define MBED_SEMIHOST_H
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#include "device.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#if DEVICE_SEMIHOST
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#if !defined(__CC_ARM) && !defined(__ARMCC_VERSION)
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#if defined(__ICCARM__)
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static inline int __semihost(int reason, const void *arg)
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{
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return __semihosting(reason, (void *)arg);
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}
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#else
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#ifdef __thumb__
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# define AngelSWI 0xAB
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# define AngelSWIInsn "bkpt"
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# define AngelSWIAsm bkpt
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#else
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# define AngelSWI 0x123456
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# define AngelSWIInsn "swi"
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# define AngelSWIAsm swi
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#endif
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static inline int __semihost(int reason, const void *arg)
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{
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int value;
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asm volatile(
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"mov r0, %1" "\n\t"
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"mov r1, %2" "\n\t"
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AngelSWIInsn " %a3" "\n\t"
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"mov %0, r0"
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: "=r"(value) /* output operands */
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: "r"(reason), "r"(arg), "i"(AngelSWI) /* input operands */
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: "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */
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);
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return value;
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}
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#endif
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#endif
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#if DEVICE_LOCALFILESYSTEM
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FILEHANDLE semihost_open(const char *name, int openmode);
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int semihost_close(FILEHANDLE fh);
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int semihost_read(FILEHANDLE fh, unsigned char *buffer, unsigned int length, int mode);
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int semihost_write(FILEHANDLE fh, const unsigned char *buffer, unsigned int length, int mode);
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int semihost_ensure(FILEHANDLE fh);
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long semihost_flen(FILEHANDLE fh);
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int semihost_seek(FILEHANDLE fh, long position);
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int semihost_istty(FILEHANDLE fh);
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int semihost_remove(const char *name);
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int semihost_rename(const char *old_name, const char *new_name);
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#endif
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int semihost_uid(char *uid);
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int semihost_reset(void);
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int semihost_vbus(void);
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int semihost_powerdown(void);
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int semihost_exit(void);
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int semihost_connected(void);
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int semihost_disabledebug(void);
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif
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