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semihost_api.h@71:7ec3cb6bbcc4, 2013-11-29 (annotated)

Committer:
jalp89
Date:
Fri Nov 29 09:39:46 2013 +0000
Revision:
71:7ec3cb6bbcc4
Parent:
65:5798e58a58b1 
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Who changed what in which revision?

UserRevisionLine numberNew contents of line
bogdanm 65:5798e58a58b1 1 /* mbed Microcontroller Library
bogdanm 65:5798e58a58b1 2 * Copyright (c) 2006-2013 ARM Limited
bogdanm 65:5798e58a58b1 3 *
bogdanm 65:5798e58a58b1 4 * Licensed under the Apache License, Version 2.0 (the "License");
bogdanm 65:5798e58a58b1 5 * you may not use this file except in compliance with the License.
bogdanm 65:5798e58a58b1 6 * You may obtain a copy of the License at
bogdanm 65:5798e58a58b1 7 *
bogdanm 65:5798e58a58b1 8 * http://www.apache.org/licenses/LICENSE-2.0
bogdanm 65:5798e58a58b1 9 *
bogdanm 65:5798e58a58b1 10 * Unless required by applicable law or agreed to in writing, software
bogdanm 65:5798e58a58b1 11 * distributed under the License is distributed on an "AS IS" BASIS,
bogdanm 65:5798e58a58b1 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
bogdanm 65:5798e58a58b1 13 * See the License for the specific language governing permissions and
bogdanm 65:5798e58a58b1 14 * limitations under the License.
bogdanm 65:5798e58a58b1 15 */
bogdanm 65:5798e58a58b1 16 #ifndef MBED_SEMIHOST_H
bogdanm 65:5798e58a58b1 17 #define MBED_SEMIHOST_H
bogdanm 65:5798e58a58b1 18
bogdanm 65:5798e58a58b1 19 #include "device.h"
bogdanm 65:5798e58a58b1 20 #include "toolchain.h"
bogdanm 65:5798e58a58b1 21
bogdanm 65:5798e58a58b1 22 #ifdef __cplusplus
bogdanm 65:5798e58a58b1 23 extern "C" {
bogdanm 65:5798e58a58b1 24 #endif
bogdanm 65:5798e58a58b1 25
bogdanm 65:5798e58a58b1 26 #if DEVICE_SEMIHOST
bogdanm 65:5798e58a58b1 27
bogdanm 65:5798e58a58b1 28 #ifndef __CC_ARM
bogdanm 65:5798e58a58b1 29
bogdanm 65:5798e58a58b1 30 #if defined(__ICCARM__)
bogdanm 65:5798e58a58b1 31 inline int __semihost(int reason, const void *arg) {
bogdanm 65:5798e58a58b1 32 return __semihosting(reason, (void*)arg);
bogdanm 65:5798e58a58b1 33 }
bogdanm 65:5798e58a58b1 34 #else
bogdanm 65:5798e58a58b1 35
bogdanm 65:5798e58a58b1 36 #ifdef __thumb__
bogdanm 65:5798e58a58b1 37 # define AngelSWI 0xAB
bogdanm 65:5798e58a58b1 38 # define AngelSWIInsn "bkpt"
bogdanm 65:5798e58a58b1 39 # define AngelSWIAsm bkpt
bogdanm 65:5798e58a58b1 40 #else
bogdanm 65:5798e58a58b1 41 # define AngelSWI 0x123456
bogdanm 65:5798e58a58b1 42 # define AngelSWIInsn "swi"
bogdanm 65:5798e58a58b1 43 # define AngelSWIAsm swi
bogdanm 65:5798e58a58b1 44 #endif
bogdanm 65:5798e58a58b1 45
bogdanm 65:5798e58a58b1 46 static inline int __semihost(int reason, const void *arg) {
bogdanm 65:5798e58a58b1 47 int value;
bogdanm 65:5798e58a58b1 48
bogdanm 65:5798e58a58b1 49 asm volatile (
bogdanm 65:5798e58a58b1 50 "mov r0, %1" "\n\t"
bogdanm 65:5798e58a58b1 51 "mov r1, %2" "\n\t"
bogdanm 65:5798e58a58b1 52 AngelSWIInsn " %a3" "\n\t"
bogdanm 65:5798e58a58b1 53 "mov %0, r0"
bogdanm 65:5798e58a58b1 54 : "=r" (value) /* output operands */
bogdanm 65:5798e58a58b1 55 : "r" (reason), "r" (arg), "i" (AngelSWI) /* input operands */
bogdanm 65:5798e58a58b1 56 : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */
bogdanm 65:5798e58a58b1 57 );
bogdanm 65:5798e58a58b1 58
bogdanm 65:5798e58a58b1 59 return value;
bogdanm 65:5798e58a58b1 60 }
bogdanm 65:5798e58a58b1 61 #endif
bogdanm 65:5798e58a58b1 62 #endif
bogdanm 65:5798e58a58b1 63
bogdanm 65:5798e58a58b1 64 #if DEVICE_LOCALFILESYSTEM
bogdanm 65:5798e58a58b1 65 FILEHANDLE semihost_open(const char* name, int openmode);
bogdanm 65:5798e58a58b1 66 int semihost_close (FILEHANDLE fh);
bogdanm 65:5798e58a58b1 67 int semihost_read (FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode);
bogdanm 65:5798e58a58b1 68 int semihost_write (FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode);
bogdanm 65:5798e58a58b1 69 int semihost_ensure(FILEHANDLE fh);
bogdanm 65:5798e58a58b1 70 long semihost_flen (FILEHANDLE fh);
bogdanm 65:5798e58a58b1 71 int semihost_seek (FILEHANDLE fh, long position);
bogdanm 65:5798e58a58b1 72 int semihost_istty (FILEHANDLE fh);
bogdanm 65:5798e58a58b1 73
bogdanm 65:5798e58a58b1 74 int semihost_remove(const char *name);
bogdanm 65:5798e58a58b1 75 int semihost_rename(const char *old_name, const char *new_name);
bogdanm 65:5798e58a58b1 76 #endif
bogdanm 65:5798e58a58b1 77
bogdanm 65:5798e58a58b1 78 int semihost_uid(char *uid);
bogdanm 65:5798e58a58b1 79 int semihost_reset(void);
bogdanm 65:5798e58a58b1 80 int semihost_vbus(void);
bogdanm 65:5798e58a58b1 81 int semihost_powerdown(void);
bogdanm 65:5798e58a58b1 82 int semihost_exit(void);
bogdanm 65:5798e58a58b1 83
bogdanm 65:5798e58a58b1 84 int semihost_connected(void);
bogdanm 65:5798e58a58b1 85 int semihost_disabledebug(void);
bogdanm 65:5798e58a58b1 86
bogdanm 65:5798e58a58b1 87 #endif
bogdanm 65:5798e58a58b1 88
bogdanm 65:5798e58a58b1 89 #ifdef __cplusplus
bogdanm 65:5798e58a58b1 90 }
bogdanm 65:5798e58a58b1 91 #endif
bogdanm 65:5798e58a58b1 92
bogdanm 65:5798e58a58b1 93 #endif