Jhon Plantikow / Dataloger

Dataloger

semihost_api.h@0:666850d06c9f, 2015-08-20 (annotated)

Committer:
jhon309
Date:
Thu Aug 20 00:37:14 2015 +0000
Revision:
0:666850d06c9f
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Who changed what in which revision?

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jhon309 0:666850d06c9f 1 /* mbed Microcontroller Library
jhon309 0:666850d06c9f 2 * Copyright (c) 2006-2013 ARM Limited
jhon309 0:666850d06c9f 3 *
jhon309 0:666850d06c9f 4 * Licensed under the Apache License, Version 2.0 (the "License");
jhon309 0:666850d06c9f 5 * you may not use this file except in compliance with the License.
jhon309 0:666850d06c9f 6 * You may obtain a copy of the License at
jhon309 0:666850d06c9f 7 *
jhon309 0:666850d06c9f 8 * http://www.apache.org/licenses/LICENSE-2.0
jhon309 0:666850d06c9f 9 *
jhon309 0:666850d06c9f 10 * Unless required by applicable law or agreed to in writing, software
jhon309 0:666850d06c9f 11 * distributed under the License is distributed on an "AS IS" BASIS,
jhon309 0:666850d06c9f 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
jhon309 0:666850d06c9f 13 * See the License for the specific language governing permissions and
jhon309 0:666850d06c9f 14 * limitations under the License.
jhon309 0:666850d06c9f 15 */
jhon309 0:666850d06c9f 16 #ifndef MBED_SEMIHOST_H
jhon309 0:666850d06c9f 17 #define MBED_SEMIHOST_H
jhon309 0:666850d06c9f 18
jhon309 0:666850d06c9f 19 #include "device.h"
jhon309 0:666850d06c9f 20 #include "toolchain.h"
jhon309 0:666850d06c9f 21
jhon309 0:666850d06c9f 22 #ifdef __cplusplus
jhon309 0:666850d06c9f 23 extern "C" {
jhon309 0:666850d06c9f 24 #endif
jhon309 0:666850d06c9f 25
jhon309 0:666850d06c9f 26 #if DEVICE_SEMIHOST
jhon309 0:666850d06c9f 27
jhon309 0:666850d06c9f 28 #ifndef __CC_ARM
jhon309 0:666850d06c9f 29
jhon309 0:666850d06c9f 30 #if defined(__ICCARM__)
jhon309 0:666850d06c9f 31 inline int __semihost(int reason, const void *arg) {
jhon309 0:666850d06c9f 32 return __semihosting(reason, (void*)arg);
jhon309 0:666850d06c9f 33 }
jhon309 0:666850d06c9f 34 #else
jhon309 0:666850d06c9f 35
jhon309 0:666850d06c9f 36 #ifdef __thumb__
jhon309 0:666850d06c9f 37 # define AngelSWI 0xAB
jhon309 0:666850d06c9f 38 # define AngelSWIInsn "bkpt"
jhon309 0:666850d06c9f 39 # define AngelSWIAsm bkpt
jhon309 0:666850d06c9f 40 #else
jhon309 0:666850d06c9f 41 # define AngelSWI 0x123456
jhon309 0:666850d06c9f 42 # define AngelSWIInsn "swi"
jhon309 0:666850d06c9f 43 # define AngelSWIAsm swi
jhon309 0:666850d06c9f 44 #endif
jhon309 0:666850d06c9f 45
jhon309 0:666850d06c9f 46 static inline int __semihost(int reason, const void *arg) {
jhon309 0:666850d06c9f 47 int value;
jhon309 0:666850d06c9f 48
jhon309 0:666850d06c9f 49 asm volatile (
jhon309 0:666850d06c9f 50 "mov r0, %1" "\n\t"
jhon309 0:666850d06c9f 51 "mov r1, %2" "\n\t"
jhon309 0:666850d06c9f 52 AngelSWIInsn " %a3" "\n\t"
jhon309 0:666850d06c9f 53 "mov %0, r0"
jhon309 0:666850d06c9f 54 : "=r" (value) /* output operands */
jhon309 0:666850d06c9f 55 : "r" (reason), "r" (arg), "i" (AngelSWI) /* input operands */
jhon309 0:666850d06c9f 56 : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */
jhon309 0:666850d06c9f 57 );
jhon309 0:666850d06c9f 58
jhon309 0:666850d06c9f 59 return value;
jhon309 0:666850d06c9f 60 }
jhon309 0:666850d06c9f 61 #endif
jhon309 0:666850d06c9f 62 #endif
jhon309 0:666850d06c9f 63
jhon309 0:666850d06c9f 64 #if DEVICE_LOCALFILESYSTEM
jhon309 0:666850d06c9f 65 FILEHANDLE semihost_open(const char* name, int openmode);
jhon309 0:666850d06c9f 66 int semihost_close (FILEHANDLE fh);
jhon309 0:666850d06c9f 67 int semihost_read (FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode);
jhon309 0:666850d06c9f 68 int semihost_write (FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode);
jhon309 0:666850d06c9f 69 int semihost_ensure(FILEHANDLE fh);
jhon309 0:666850d06c9f 70 long semihost_flen (FILEHANDLE fh);
jhon309 0:666850d06c9f 71 int semihost_seek (FILEHANDLE fh, long position);
jhon309 0:666850d06c9f 72 int semihost_istty (FILEHANDLE fh);
jhon309 0:666850d06c9f 73
jhon309 0:666850d06c9f 74 int semihost_remove(const char *name);
jhon309 0:666850d06c9f 75 int semihost_rename(const char *old_name, const char *new_name);
jhon309 0:666850d06c9f 76 #endif
jhon309 0:666850d06c9f 77
jhon309 0:666850d06c9f 78 int semihost_uid(char *uid);
jhon309 0:666850d06c9f 79 int semihost_reset(void);
jhon309 0:666850d06c9f 80 int semihost_vbus(void);
jhon309 0:666850d06c9f 81 int semihost_powerdown(void);
jhon309 0:666850d06c9f 82 int semihost_exit(void);
jhon309 0:666850d06c9f 83
jhon309 0:666850d06c9f 84 int semihost_connected(void);
jhon309 0:666850d06c9f 85 int semihost_disabledebug(void);
jhon309 0:666850d06c9f 86
jhon309 0:666850d06c9f 87 #endif
jhon309 0:666850d06c9f 88
jhon309 0:666850d06c9f 89 #ifdef __cplusplus
jhon309 0:666850d06c9f 90 }
jhon309 0:666850d06c9f 91 #endif
jhon309 0:666850d06c9f 92
jhon309 0:666850d06c9f 93 #endif