Mateusz Kowalik / Application_danix

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Fork of Application by Daniel Sygut

mbed-dev/platform/mbed_semihost_api.c@15:2a20c3d2616e, 2018-02-15 (annotated)

Committer:
Zaitsev
Date:
Thu Feb 15 14:29:23 2018 +0000
Revision:
15:2a20c3d2616e
Parent:
10:41552d038a69 
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Who changed what in which revision?

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Zaitsev 10:41552d038a69 1 /* mbed Microcontroller Library
Zaitsev 10:41552d038a69 2 * Copyright (c) 2006-2013 ARM Limited
Zaitsev 10:41552d038a69 3 *
Zaitsev 10:41552d038a69 4 * Licensed under the Apache License, Version 2.0 (the "License");
Zaitsev 10:41552d038a69 5 * you may not use this file except in compliance with the License.
Zaitsev 10:41552d038a69 6 * You may obtain a copy of the License at
Zaitsev 10:41552d038a69 7 *
Zaitsev 10:41552d038a69 8 * http://www.apache.org/licenses/LICENSE-2.0
Zaitsev 10:41552d038a69 9 *
Zaitsev 10:41552d038a69 10 * Unless required by applicable law or agreed to in writing, software
Zaitsev 10:41552d038a69 11 * distributed under the License is distributed on an "AS IS" BASIS,
Zaitsev 10:41552d038a69 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
Zaitsev 10:41552d038a69 13 * See the License for the specific language governing permissions and
Zaitsev 10:41552d038a69 14 * limitations under the License.
Zaitsev 10:41552d038a69 15 */
Zaitsev 10:41552d038a69 16 #include "cmsis.h"
Zaitsev 10:41552d038a69 17 #include "platform/semihost_api.h"
Zaitsev 10:41552d038a69 18
Zaitsev 10:41552d038a69 19 #include <stdint.h>
Zaitsev 10:41552d038a69 20 #include <string.h>
Zaitsev 10:41552d038a69 21
Zaitsev 10:41552d038a69 22 #if DEVICE_SEMIHOST
Zaitsev 10:41552d038a69 23
Zaitsev 10:41552d038a69 24 // ARM Semihosting Commands
Zaitsev 10:41552d038a69 25 #define SYS_OPEN (0x1)
Zaitsev 10:41552d038a69 26 #define SYS_CLOSE (0x2)
Zaitsev 10:41552d038a69 27 #define SYS_WRITE (0x5)
Zaitsev 10:41552d038a69 28 #define SYS_READ (0x6)
Zaitsev 10:41552d038a69 29 #define SYS_ISTTY (0x9)
Zaitsev 10:41552d038a69 30 #define SYS_SEEK (0xa)
Zaitsev 10:41552d038a69 31 #define SYS_ENSURE (0xb)
Zaitsev 10:41552d038a69 32 #define SYS_FLEN (0xc)
Zaitsev 10:41552d038a69 33 #define SYS_REMOVE (0xe)
Zaitsev 10:41552d038a69 34 #define SYS_RENAME (0xf)
Zaitsev 10:41552d038a69 35 #define SYS_EXIT (0x18)
Zaitsev 10:41552d038a69 36
Zaitsev 10:41552d038a69 37 // mbed Semihosting Commands
Zaitsev 10:41552d038a69 38 #define RESERVED_FOR_USER_APPLICATIONS (0x100) // 0x100 - 0x1ff
Zaitsev 10:41552d038a69 39 #define USR_XFFIND (RESERVED_FOR_USER_APPLICATIONS + 0)
Zaitsev 10:41552d038a69 40 #define USR_UID (RESERVED_FOR_USER_APPLICATIONS + 1)
Zaitsev 10:41552d038a69 41 #define USR_RESET (RESERVED_FOR_USER_APPLICATIONS + 2)
Zaitsev 10:41552d038a69 42 #define USR_VBUS (RESERVED_FOR_USER_APPLICATIONS + 3)
Zaitsev 10:41552d038a69 43 #define USR_POWERDOWN (RESERVED_FOR_USER_APPLICATIONS + 4)
Zaitsev 10:41552d038a69 44 #define USR_DISABLEDEBUG (RESERVED_FOR_USER_APPLICATIONS + 5)
Zaitsev 10:41552d038a69 45
Zaitsev 10:41552d038a69 46 #if DEVICE_LOCALFILESYSTEM
Zaitsev 10:41552d038a69 47 FILEHANDLE semihost_open(const char* name, int openmode) {
Zaitsev 10:41552d038a69 48 uint32_t args[3];
Zaitsev 10:41552d038a69 49 args[0] = (uint32_t)name;
Zaitsev 10:41552d038a69 50 args[1] = (uint32_t)openmode;
Zaitsev 10:41552d038a69 51 args[2] = (uint32_t)strlen(name);
Zaitsev 10:41552d038a69 52 return __semihost(SYS_OPEN, args);
Zaitsev 10:41552d038a69 53 }
Zaitsev 10:41552d038a69 54
Zaitsev 10:41552d038a69 55 int semihost_close(FILEHANDLE fh) {
Zaitsev 10:41552d038a69 56 return __semihost(SYS_CLOSE, &fh);
Zaitsev 10:41552d038a69 57 }
Zaitsev 10:41552d038a69 58
Zaitsev 10:41552d038a69 59 int semihost_write(FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode) {
Zaitsev 10:41552d038a69 60 if (length == 0) return 0;
Zaitsev 10:41552d038a69 61
Zaitsev 10:41552d038a69 62 uint32_t args[3];
Zaitsev 10:41552d038a69 63 args[0] = (uint32_t)fh;
Zaitsev 10:41552d038a69 64 args[1] = (uint32_t)buffer;
Zaitsev 10:41552d038a69 65 args[2] = (uint32_t)length;
Zaitsev 10:41552d038a69 66 return __semihost(SYS_WRITE, args);
Zaitsev 10:41552d038a69 67 }
Zaitsev 10:41552d038a69 68
Zaitsev 10:41552d038a69 69 int semihost_read(FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode) {
Zaitsev 10:41552d038a69 70 uint32_t args[3];
Zaitsev 10:41552d038a69 71 args[0] = (uint32_t)fh;
Zaitsev 10:41552d038a69 72 args[1] = (uint32_t)buffer;
Zaitsev 10:41552d038a69 73 args[2] = (uint32_t)length;
Zaitsev 10:41552d038a69 74 return __semihost(SYS_READ, args);
Zaitsev 10:41552d038a69 75 }
Zaitsev 10:41552d038a69 76
Zaitsev 10:41552d038a69 77 int semihost_istty(FILEHANDLE fh) {
Zaitsev 10:41552d038a69 78 return __semihost(SYS_ISTTY, &fh);
Zaitsev 10:41552d038a69 79 }
Zaitsev 10:41552d038a69 80
Zaitsev 10:41552d038a69 81 int semihost_seek(FILEHANDLE fh, long position) {
Zaitsev 10:41552d038a69 82 uint32_t args[2];
Zaitsev 10:41552d038a69 83 args[0] = (uint32_t)fh;
Zaitsev 10:41552d038a69 84 args[1] = (uint32_t)position;
Zaitsev 10:41552d038a69 85 return __semihost(SYS_SEEK, args);
Zaitsev 10:41552d038a69 86 }
Zaitsev 10:41552d038a69 87
Zaitsev 10:41552d038a69 88 int semihost_ensure(FILEHANDLE fh) {
Zaitsev 10:41552d038a69 89 return __semihost(SYS_ENSURE, &fh);
Zaitsev 10:41552d038a69 90 }
Zaitsev 10:41552d038a69 91
Zaitsev 10:41552d038a69 92 long semihost_flen(FILEHANDLE fh) {
Zaitsev 10:41552d038a69 93 return __semihost(SYS_FLEN, &fh);
Zaitsev 10:41552d038a69 94 }
Zaitsev 10:41552d038a69 95
Zaitsev 10:41552d038a69 96 int semihost_remove(const char *name) {
Zaitsev 10:41552d038a69 97 uint32_t args[2];
Zaitsev 10:41552d038a69 98 args[0] = (uint32_t)name;
Zaitsev 10:41552d038a69 99 args[1] = (uint32_t)strlen(name);
Zaitsev 10:41552d038a69 100 return __semihost(SYS_REMOVE, args);
Zaitsev 10:41552d038a69 101 }
Zaitsev 10:41552d038a69 102
Zaitsev 10:41552d038a69 103 int semihost_rename(const char *old_name, const char *new_name) {
Zaitsev 10:41552d038a69 104 uint32_t args[4];
Zaitsev 10:41552d038a69 105 args[0] = (uint32_t)old_name;
Zaitsev 10:41552d038a69 106 args[1] = (uint32_t)strlen(old_name);
Zaitsev 10:41552d038a69 107 args[0] = (uint32_t)new_name;
Zaitsev 10:41552d038a69 108 args[1] = (uint32_t)strlen(new_name);
Zaitsev 10:41552d038a69 109 return __semihost(SYS_RENAME, args);
Zaitsev 10:41552d038a69 110 }
Zaitsev 10:41552d038a69 111 #endif
Zaitsev 10:41552d038a69 112
Zaitsev 10:41552d038a69 113 int semihost_exit(void) {
Zaitsev 10:41552d038a69 114 uint32_t args[4];
Zaitsev 10:41552d038a69 115 return __semihost(SYS_EXIT, args);
Zaitsev 10:41552d038a69 116 }
Zaitsev 10:41552d038a69 117
Zaitsev 10:41552d038a69 118 int semihost_uid(char *uid) {
Zaitsev 10:41552d038a69 119 uint32_t args[2];
Zaitsev 10:41552d038a69 120 args[0] = (uint32_t)uid;
Zaitsev 10:41552d038a69 121 args[1] = DEVICE_ID_LENGTH + 1;
Zaitsev 10:41552d038a69 122 return __semihost(USR_UID, &args);
Zaitsev 10:41552d038a69 123 }
Zaitsev 10:41552d038a69 124
Zaitsev 10:41552d038a69 125 int semihost_reset(void) {
Zaitsev 10:41552d038a69 126 // Does not normally return, however if used with older firmware versions
Zaitsev 10:41552d038a69 127 // that do not support this call it will return -1.
Zaitsev 10:41552d038a69 128 return __semihost(USR_RESET, NULL);
Zaitsev 10:41552d038a69 129 }
Zaitsev 10:41552d038a69 130
Zaitsev 10:41552d038a69 131 int semihost_vbus(void) {
Zaitsev 10:41552d038a69 132 return __semihost(USR_VBUS, NULL);
Zaitsev 10:41552d038a69 133 }
Zaitsev 10:41552d038a69 134
Zaitsev 10:41552d038a69 135 int semihost_powerdown(void) {
Zaitsev 10:41552d038a69 136 return __semihost(USR_POWERDOWN, NULL);
Zaitsev 10:41552d038a69 137 }
Zaitsev 10:41552d038a69 138
Zaitsev 10:41552d038a69 139 #if DEVICE_DEBUG_AWARENESS
Zaitsev 10:41552d038a69 140
Zaitsev 10:41552d038a69 141 int semihost_connected(void) {
Zaitsev 10:41552d038a69 142 return (CoreDebug->DHCSR & CoreDebug_DHCSR_C_DEBUGEN_Msk) ? 1 : 0;
Zaitsev 10:41552d038a69 143 }
Zaitsev 10:41552d038a69 144
Zaitsev 10:41552d038a69 145 #else
Zaitsev 10:41552d038a69 146 // These processors cannot know if the interface is connect, assume so:
Zaitsev 10:41552d038a69 147 static int is_debugger_attached = 1;
Zaitsev 10:41552d038a69 148
Zaitsev 10:41552d038a69 149 int semihost_connected(void) {
Zaitsev 10:41552d038a69 150 return is_debugger_attached;
Zaitsev 10:41552d038a69 151 }
Zaitsev 10:41552d038a69 152 #endif
Zaitsev 10:41552d038a69 153
Zaitsev 10:41552d038a69 154 int semihost_disabledebug(void) {
Zaitsev 10:41552d038a69 155 #if !(DEVICE_DEBUG_AWARENESS)
Zaitsev 10:41552d038a69 156 is_debugger_attached = 0;
Zaitsev 10:41552d038a69 157 #endif
Zaitsev 10:41552d038a69 158 return __semihost(USR_DISABLEDEBUG, NULL);
Zaitsev 10:41552d038a69 159 }
Zaitsev 10:41552d038a69 160
Zaitsev 10:41552d038a69 161 #endif
Zaitsev 10:41552d038a69 162