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mbed-dev/platform/semihost_api.h@1:d0dfbce63a89, 2017-02-24 (annotated)

Committer:
elmot
Date:
Fri Feb 24 21:13:56 2017 +0000
Revision:
1:d0dfbce63a89
Ready-to-copy

Who changed what in which revision?

UserRevisionLine numberNew contents of line
elmot 1:d0dfbce63a89 1
elmot 1:d0dfbce63a89 2 /** \addtogroup platform */
elmot 1:d0dfbce63a89 3 /** @{*/
elmot 1:d0dfbce63a89 4 /* mbed Microcontroller Library
elmot 1:d0dfbce63a89 5 * Copyright (c) 2006-2013 ARM Limited
elmot 1:d0dfbce63a89 6 *
elmot 1:d0dfbce63a89 7 * Licensed under the Apache License, Version 2.0 (the "License");
elmot 1:d0dfbce63a89 8 * you may not use this file except in compliance with the License.
elmot 1:d0dfbce63a89 9 * You may obtain a copy of the License at
elmot 1:d0dfbce63a89 10 *
elmot 1:d0dfbce63a89 11 * http://www.apache.org/licenses/LICENSE-2.0
elmot 1:d0dfbce63a89 12 *
elmot 1:d0dfbce63a89 13 * Unless required by applicable law or agreed to in writing, software
elmot 1:d0dfbce63a89 14 * distributed under the License is distributed on an "AS IS" BASIS,
elmot 1:d0dfbce63a89 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
elmot 1:d0dfbce63a89 16 * See the License for the specific language governing permissions and
elmot 1:d0dfbce63a89 17 * limitations under the License.
elmot 1:d0dfbce63a89 18 */
elmot 1:d0dfbce63a89 19 #ifndef MBED_SEMIHOST_H
elmot 1:d0dfbce63a89 20 #define MBED_SEMIHOST_H
elmot 1:d0dfbce63a89 21
elmot 1:d0dfbce63a89 22 #include "device.h"
elmot 1:d0dfbce63a89 23 #include "platform/toolchain.h"
elmot 1:d0dfbce63a89 24
elmot 1:d0dfbce63a89 25 #ifdef __cplusplus
elmot 1:d0dfbce63a89 26 extern "C" {
elmot 1:d0dfbce63a89 27 #endif
elmot 1:d0dfbce63a89 28
elmot 1:d0dfbce63a89 29 #if DEVICE_SEMIHOST
elmot 1:d0dfbce63a89 30
elmot 1:d0dfbce63a89 31 #ifndef __CC_ARM
elmot 1:d0dfbce63a89 32
elmot 1:d0dfbce63a89 33 #if defined(__ICCARM__)
elmot 1:d0dfbce63a89 34 static inline int __semihost(int reason, const void *arg) {
elmot 1:d0dfbce63a89 35 return __semihosting(reason, (void*)arg);
elmot 1:d0dfbce63a89 36 }
elmot 1:d0dfbce63a89 37 #else
elmot 1:d0dfbce63a89 38
elmot 1:d0dfbce63a89 39 #ifdef __thumb__
elmot 1:d0dfbce63a89 40 # define AngelSWI 0xAB
elmot 1:d0dfbce63a89 41 # define AngelSWIInsn "bkpt"
elmot 1:d0dfbce63a89 42 # define AngelSWIAsm bkpt
elmot 1:d0dfbce63a89 43 #else
elmot 1:d0dfbce63a89 44 # define AngelSWI 0x123456
elmot 1:d0dfbce63a89 45 # define AngelSWIInsn "swi"
elmot 1:d0dfbce63a89 46 # define AngelSWIAsm swi
elmot 1:d0dfbce63a89 47 #endif
elmot 1:d0dfbce63a89 48
elmot 1:d0dfbce63a89 49 static inline int __semihost(int reason, const void *arg) {
elmot 1:d0dfbce63a89 50 int value;
elmot 1:d0dfbce63a89 51
elmot 1:d0dfbce63a89 52 asm volatile (
elmot 1:d0dfbce63a89 53 "mov r0, %1" "\n\t"
elmot 1:d0dfbce63a89 54 "mov r1, %2" "\n\t"
elmot 1:d0dfbce63a89 55 AngelSWIInsn " %a3" "\n\t"
elmot 1:d0dfbce63a89 56 "mov %0, r0"
elmot 1:d0dfbce63a89 57 : "=r" (value) /* output operands */
elmot 1:d0dfbce63a89 58 : "r" (reason), "r" (arg), "i" (AngelSWI) /* input operands */
elmot 1:d0dfbce63a89 59 : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */
elmot 1:d0dfbce63a89 60 );
elmot 1:d0dfbce63a89 61
elmot 1:d0dfbce63a89 62 return value;
elmot 1:d0dfbce63a89 63 }
elmot 1:d0dfbce63a89 64 #endif
elmot 1:d0dfbce63a89 65 #endif
elmot 1:d0dfbce63a89 66
elmot 1:d0dfbce63a89 67 #if DEVICE_LOCALFILESYSTEM
elmot 1:d0dfbce63a89 68 FILEHANDLE semihost_open(const char* name, int openmode);
elmot 1:d0dfbce63a89 69 int semihost_close (FILEHANDLE fh);
elmot 1:d0dfbce63a89 70 int semihost_read (FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode);
elmot 1:d0dfbce63a89 71 int semihost_write (FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode);
elmot 1:d0dfbce63a89 72 int semihost_ensure(FILEHANDLE fh);
elmot 1:d0dfbce63a89 73 long semihost_flen (FILEHANDLE fh);
elmot 1:d0dfbce63a89 74 int semihost_seek (FILEHANDLE fh, long position);
elmot 1:d0dfbce63a89 75 int semihost_istty (FILEHANDLE fh);
elmot 1:d0dfbce63a89 76
elmot 1:d0dfbce63a89 77 int semihost_remove(const char *name);
elmot 1:d0dfbce63a89 78 int semihost_rename(const char *old_name, const char *new_name);
elmot 1:d0dfbce63a89 79 #endif
elmot 1:d0dfbce63a89 80
elmot 1:d0dfbce63a89 81 int semihost_uid(char *uid);
elmot 1:d0dfbce63a89 82 int semihost_reset(void);
elmot 1:d0dfbce63a89 83 int semihost_vbus(void);
elmot 1:d0dfbce63a89 84 int semihost_powerdown(void);
elmot 1:d0dfbce63a89 85 int semihost_exit(void);
elmot 1:d0dfbce63a89 86
elmot 1:d0dfbce63a89 87 int semihost_connected(void);
elmot 1:d0dfbce63a89 88 int semihost_disabledebug(void);
elmot 1:d0dfbce63a89 89
elmot 1:d0dfbce63a89 90 #endif
elmot 1:d0dfbce63a89 91
elmot 1:d0dfbce63a89 92 #ifdef __cplusplus
elmot 1:d0dfbce63a89 93 }
elmot 1:d0dfbce63a89 94 #endif
elmot 1:d0dfbce63a89 95
elmot 1:d0dfbce63a89 96 #endif
elmot 1:d0dfbce63a89 97
elmot 1:d0dfbce63a89 98 /** @}*/