Gan likun / mbed-dev11

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platform/mbed_semihost_api.h@0:06036f8bee2d, 2022-10-24 (annotated)

Committer:
ganlikun
Date:
Mon Oct 24 15:19:39 2022 +0000
Revision:
0:06036f8bee2d
11

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ganlikun 0:06036f8bee2d 1
ganlikun 0:06036f8bee2d 2 /** \addtogroup platform */
ganlikun 0:06036f8bee2d 3 /** @{*/
ganlikun 0:06036f8bee2d 4 /* mbed Microcontroller Library
ganlikun 0:06036f8bee2d 5 * Copyright (c) 2006-2013 ARM Limited
ganlikun 0:06036f8bee2d 6 *
ganlikun 0:06036f8bee2d 7 * Licensed under the Apache License, Version 2.0 (the "License");
ganlikun 0:06036f8bee2d 8 * you may not use this file except in compliance with the License.
ganlikun 0:06036f8bee2d 9 * You may obtain a copy of the License at
ganlikun 0:06036f8bee2d 10 *
ganlikun 0:06036f8bee2d 11 * http://www.apache.org/licenses/LICENSE-2.0
ganlikun 0:06036f8bee2d 12 *
ganlikun 0:06036f8bee2d 13 * Unless required by applicable law or agreed to in writing, software
ganlikun 0:06036f8bee2d 14 * distributed under the License is distributed on an "AS IS" BASIS,
ganlikun 0:06036f8bee2d 15 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
ganlikun 0:06036f8bee2d 16 * See the License for the specific language governing permissions and
ganlikun 0:06036f8bee2d 17 * limitations under the License.
ganlikun 0:06036f8bee2d 18 */
ganlikun 0:06036f8bee2d 19 #ifndef MBED_SEMIHOST_H
ganlikun 0:06036f8bee2d 20 #define MBED_SEMIHOST_H
ganlikun 0:06036f8bee2d 21
ganlikun 0:06036f8bee2d 22 #include "device.h"
ganlikun 0:06036f8bee2d 23 #include "platform/mbed_toolchain.h"
ganlikun 0:06036f8bee2d 24
ganlikun 0:06036f8bee2d 25 #ifdef __cplusplus
ganlikun 0:06036f8bee2d 26 extern "C" {
ganlikun 0:06036f8bee2d 27 #endif
ganlikun 0:06036f8bee2d 28
ganlikun 0:06036f8bee2d 29 #if DEVICE_SEMIHOST
ganlikun 0:06036f8bee2d 30
ganlikun 0:06036f8bee2d 31 #if !defined(__CC_ARM) && !defined(__ARMCC_VERSION)
ganlikun 0:06036f8bee2d 32
ganlikun 0:06036f8bee2d 33 #if defined(__ICCARM__)
ganlikun 0:06036f8bee2d 34 static inline int __semihost(int reason, const void *arg) {
ganlikun 0:06036f8bee2d 35 return __semihosting(reason, (void*)arg);
ganlikun 0:06036f8bee2d 36 }
ganlikun 0:06036f8bee2d 37 #else
ganlikun 0:06036f8bee2d 38
ganlikun 0:06036f8bee2d 39 #ifdef __thumb__
ganlikun 0:06036f8bee2d 40 # define AngelSWI 0xAB
ganlikun 0:06036f8bee2d 41 # define AngelSWIInsn "bkpt"
ganlikun 0:06036f8bee2d 42 # define AngelSWIAsm bkpt
ganlikun 0:06036f8bee2d 43 #else
ganlikun 0:06036f8bee2d 44 # define AngelSWI 0x123456
ganlikun 0:06036f8bee2d 45 # define AngelSWIInsn "swi"
ganlikun 0:06036f8bee2d 46 # define AngelSWIAsm swi
ganlikun 0:06036f8bee2d 47 #endif
ganlikun 0:06036f8bee2d 48
ganlikun 0:06036f8bee2d 49 static inline int __semihost(int reason, const void *arg) {
ganlikun 0:06036f8bee2d 50 int value;
ganlikun 0:06036f8bee2d 51
ganlikun 0:06036f8bee2d 52 asm volatile (
ganlikun 0:06036f8bee2d 53 "mov r0, %1" "\n\t"
ganlikun 0:06036f8bee2d 54 "mov r1, %2" "\n\t"
ganlikun 0:06036f8bee2d 55 AngelSWIInsn " %a3" "\n\t"
ganlikun 0:06036f8bee2d 56 "mov %0, r0"
ganlikun 0:06036f8bee2d 57 : "=r" (value) /* output operands */
ganlikun 0:06036f8bee2d 58 : "r" (reason), "r" (arg), "i" (AngelSWI) /* input operands */
ganlikun 0:06036f8bee2d 59 : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */
ganlikun 0:06036f8bee2d 60 );
ganlikun 0:06036f8bee2d 61
ganlikun 0:06036f8bee2d 62 return value;
ganlikun 0:06036f8bee2d 63 }
ganlikun 0:06036f8bee2d 64 #endif
ganlikun 0:06036f8bee2d 65 #endif
ganlikun 0:06036f8bee2d 66
ganlikun 0:06036f8bee2d 67 #if DEVICE_LOCALFILESYSTEM
ganlikun 0:06036f8bee2d 68 FILEHANDLE semihost_open(const char* name, int openmode);
ganlikun 0:06036f8bee2d 69 int semihost_close (FILEHANDLE fh);
ganlikun 0:06036f8bee2d 70 int semihost_read (FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode);
ganlikun 0:06036f8bee2d 71 int semihost_write (FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode);
ganlikun 0:06036f8bee2d 72 int semihost_ensure(FILEHANDLE fh);
ganlikun 0:06036f8bee2d 73 long semihost_flen (FILEHANDLE fh);
ganlikun 0:06036f8bee2d 74 int semihost_seek (FILEHANDLE fh, long position);
ganlikun 0:06036f8bee2d 75 int semihost_istty (FILEHANDLE fh);
ganlikun 0:06036f8bee2d 76
ganlikun 0:06036f8bee2d 77 int semihost_remove(const char *name);
ganlikun 0:06036f8bee2d 78 int semihost_rename(const char *old_name, const char *new_name);
ganlikun 0:06036f8bee2d 79 #endif
ganlikun 0:06036f8bee2d 80
ganlikun 0:06036f8bee2d 81 int semihost_uid(char *uid);
ganlikun 0:06036f8bee2d 82 int semihost_reset(void);
ganlikun 0:06036f8bee2d 83 int semihost_vbus(void);
ganlikun 0:06036f8bee2d 84 int semihost_powerdown(void);
ganlikun 0:06036f8bee2d 85 int semihost_exit(void);
ganlikun 0:06036f8bee2d 86
ganlikun 0:06036f8bee2d 87 int semihost_connected(void);
ganlikun 0:06036f8bee2d 88 int semihost_disabledebug(void);
ganlikun 0:06036f8bee2d 89
ganlikun 0:06036f8bee2d 90 #endif
ganlikun 0:06036f8bee2d 91
ganlikun 0:06036f8bee2d 92 #ifdef __cplusplus
ganlikun 0:06036f8bee2d 93 }
ganlikun 0:06036f8bee2d 94 #endif
ganlikun 0:06036f8bee2d 95
ganlikun 0:06036f8bee2d 96 #endif
ganlikun 0:06036f8bee2d 97
ganlikun 0:06036f8bee2d 98 /** @}*/
ganlikun 0:06036f8bee2d 99