mbed official / mbed-dev

mbed library sources. Supersedes mbed-src.

Dependents:   Nucleo_Hello_Encoder BLE_iBeaconScan AM1805_DEMO DISCO-F429ZI_ExportTemplate1 ... more

platform/mbed_semihost_api.h@189:f392fc9709a3, 2019-02-20 (annotated)

Committer:
AnnaBridge
Date:
Wed Feb 20 22:31:08 2019 +0000
Revision:
189:f392fc9709a3
Parent:
187:0387e8f68319 
mbed library release version 165

Who changed what in which revision?

UserRevisionLine numberNew contents of line
<> 160:d5399cc887bb 1
<> 160:d5399cc887bb 2 /* mbed Microcontroller Library
<> 160:d5399cc887bb 3 * Copyright (c) 2006-2013 ARM Limited
AnnaBridge 189:f392fc9709a3 4 * SPDX-License-Identifier: Apache-2.0
<> 160:d5399cc887bb 5 *
<> 160:d5399cc887bb 6 * Licensed under the Apache License, Version 2.0 (the "License");
<> 160:d5399cc887bb 7 * you may not use this file except in compliance with the License.
<> 160:d5399cc887bb 8 * You may obtain a copy of the License at
<> 160:d5399cc887bb 9 *
<> 160:d5399cc887bb 10 * http://www.apache.org/licenses/LICENSE-2.0
<> 160:d5399cc887bb 11 *
<> 160:d5399cc887bb 12 * Unless required by applicable law or agreed to in writing, software
<> 160:d5399cc887bb 13 * distributed under the License is distributed on an "AS IS" BASIS,
<> 160:d5399cc887bb 14 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
<> 160:d5399cc887bb 15 * See the License for the specific language governing permissions and
<> 160:d5399cc887bb 16 * limitations under the License.
<> 160:d5399cc887bb 17 */
<> 160:d5399cc887bb 18 #ifndef MBED_SEMIHOST_H
<> 160:d5399cc887bb 19 #define MBED_SEMIHOST_H
<> 160:d5399cc887bb 20
<> 160:d5399cc887bb 21 #include "device.h"
<> 160:d5399cc887bb 22 #include "platform/mbed_toolchain.h"
<> 160:d5399cc887bb 23
<> 160:d5399cc887bb 24 #ifdef __cplusplus
<> 160:d5399cc887bb 25 extern "C" {
<> 160:d5399cc887bb 26 #endif
<> 160:d5399cc887bb 27
<> 160:d5399cc887bb 28 #if DEVICE_SEMIHOST
<> 160:d5399cc887bb 29
AnnaBridge 174:b96e65c34a4d 30 #if !defined(__CC_ARM) && !defined(__ARMCC_VERSION)
<> 160:d5399cc887bb 31
<> 160:d5399cc887bb 32 #if defined(__ICCARM__)
AnnaBridge 187:0387e8f68319 33 static inline int __semihost(int reason, const void *arg)
AnnaBridge 187:0387e8f68319 34 {
AnnaBridge 187:0387e8f68319 35 return __semihosting(reason, (void *)arg);
<> 160:d5399cc887bb 36 }
<> 160:d5399cc887bb 37 #else
<> 160:d5399cc887bb 38
<> 160:d5399cc887bb 39 #ifdef __thumb__
<> 160:d5399cc887bb 40 # define AngelSWI 0xAB
<> 160:d5399cc887bb 41 # define AngelSWIInsn "bkpt"
<> 160:d5399cc887bb 42 # define AngelSWIAsm bkpt
<> 160:d5399cc887bb 43 #else
<> 160:d5399cc887bb 44 # define AngelSWI 0x123456
<> 160:d5399cc887bb 45 # define AngelSWIInsn "swi"
<> 160:d5399cc887bb 46 # define AngelSWIAsm swi
<> 160:d5399cc887bb 47 #endif
<> 160:d5399cc887bb 48
AnnaBridge 187:0387e8f68319 49 static inline int __semihost(int reason, const void *arg)
AnnaBridge 187:0387e8f68319 50 {
<> 160:d5399cc887bb 51 int value;
<> 160:d5399cc887bb 52
AnnaBridge 187:0387e8f68319 53 asm volatile(
AnnaBridge 187:0387e8f68319 54 "mov r0, %1" "\n\t"
AnnaBridge 187:0387e8f68319 55 "mov r1, %2" "\n\t"
AnnaBridge 187:0387e8f68319 56 AngelSWIInsn " %a3" "\n\t"
AnnaBridge 187:0387e8f68319 57 "mov %0, r0"
AnnaBridge 187:0387e8f68319 58 : "=r"(value) /* output operands */
AnnaBridge 187:0387e8f68319 59 : "r"(reason), "r"(arg), "i"(AngelSWI) /* input operands */
AnnaBridge 187:0387e8f68319 60 : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */
<> 160:d5399cc887bb 61 );
<> 160:d5399cc887bb 62
<> 160:d5399cc887bb 63 return value;
<> 160:d5399cc887bb 64 }
<> 160:d5399cc887bb 65 #endif
<> 160:d5399cc887bb 66 #endif
<> 160:d5399cc887bb 67
<> 160:d5399cc887bb 68 #if DEVICE_LOCALFILESYSTEM
AnnaBridge 187:0387e8f68319 69 FILEHANDLE semihost_open(const char *name, int openmode);
AnnaBridge 187:0387e8f68319 70 int semihost_close(FILEHANDLE fh);
AnnaBridge 187:0387e8f68319 71 int semihost_read(FILEHANDLE fh, unsigned char *buffer, unsigned int length, int mode);
AnnaBridge 187:0387e8f68319 72 int semihost_write(FILEHANDLE fh, const unsigned char *buffer, unsigned int length, int mode);
<> 160:d5399cc887bb 73 int semihost_ensure(FILEHANDLE fh);
AnnaBridge 187:0387e8f68319 74 long semihost_flen(FILEHANDLE fh);
AnnaBridge 187:0387e8f68319 75 int semihost_seek(FILEHANDLE fh, long position);
AnnaBridge 187:0387e8f68319 76 int semihost_istty(FILEHANDLE fh);
<> 160:d5399cc887bb 77
<> 160:d5399cc887bb 78 int semihost_remove(const char *name);
<> 160:d5399cc887bb 79 int semihost_rename(const char *old_name, const char *new_name);
<> 160:d5399cc887bb 80 #endif
<> 160:d5399cc887bb 81
<> 160:d5399cc887bb 82 int semihost_uid(char *uid);
<> 160:d5399cc887bb 83 int semihost_reset(void);
<> 160:d5399cc887bb 84 int semihost_vbus(void);
<> 160:d5399cc887bb 85 int semihost_powerdown(void);
<> 160:d5399cc887bb 86 int semihost_exit(void);
<> 160:d5399cc887bb 87
<> 160:d5399cc887bb 88 int semihost_connected(void);
<> 160:d5399cc887bb 89 int semihost_disabledebug(void);
<> 160:d5399cc887bb 90
<> 160:d5399cc887bb 91 #endif
<> 160:d5399cc887bb 92
<> 160:d5399cc887bb 93 #ifdef __cplusplus
<> 160:d5399cc887bb 94 }
<> 160:d5399cc887bb 95 #endif
<> 160:d5399cc887bb 96
<> 160:d5399cc887bb 97 #endif
<> 160:d5399cc887bb 98
AnnaBridge 178:79309dc6340a 99