mbed official / mbed-src

mbed library sources

Dependents:   Encrypted my_mbed lklk CyaSSL_DTLS_Cellular ... more

Superseded

This library was superseded by mbed-dev - https://os.mbed.com/users/mbed_official/code/mbed-dev/.

Development branch of the mbed library sources. This library is kept in synch with the latest changes from the mbed SDK and it is not guaranteed to work.

If you are looking for a stable and tested release, please import one of the official mbed library releases:

Import librarymbed

The official Mbed 2 C/C++ SDK provides the software platform and libraries to build your applications.

Last commit 20 Feb 2019 by mbed official

capi/semihost_api.h@0:fd0d7bdfcdc2, 2012-11-20 (annotated)

Committer:
mbed_official
Date:
Tue Nov 20 17:24:08 2012 +0000
Revision:
0:fd0d7bdfcdc2
Child:
2:143cac498751
mbed sources

Who changed what in which revision?

UserRevisionLine numberNew contents of line
mbed_official 0:fd0d7bdfcdc2 1 /* mbed Microcontroller Library
mbed_official 0:fd0d7bdfcdc2 2 * Copyright (c) 2006-2012 ARM Limited
mbed_official 0:fd0d7bdfcdc2 3 *
mbed_official 0:fd0d7bdfcdc2 4 * Permission is hereby granted, free of charge, to any person obtaining a copy
mbed_official 0:fd0d7bdfcdc2 5 * of this software and associated documentation files (the "Software"), to deal
mbed_official 0:fd0d7bdfcdc2 6 * in the Software without restriction, including without limitation the rights
mbed_official 0:fd0d7bdfcdc2 7 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
mbed_official 0:fd0d7bdfcdc2 8 * copies of the Software, and to permit persons to whom the Software is
mbed_official 0:fd0d7bdfcdc2 9 * furnished to do so, subject to the following conditions:
mbed_official 0:fd0d7bdfcdc2 10 *
mbed_official 0:fd0d7bdfcdc2 11 * The above copyright notice and this permission notice shall be included in
mbed_official 0:fd0d7bdfcdc2 12 * all copies or substantial portions of the Software.
mbed_official 0:fd0d7bdfcdc2 13 *
mbed_official 0:fd0d7bdfcdc2 14 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
mbed_official 0:fd0d7bdfcdc2 15 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
mbed_official 0:fd0d7bdfcdc2 16 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
mbed_official 0:fd0d7bdfcdc2 17 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
mbed_official 0:fd0d7bdfcdc2 18 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
mbed_official 0:fd0d7bdfcdc2 19 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
mbed_official 0:fd0d7bdfcdc2 20 * SOFTWARE.
mbed_official 0:fd0d7bdfcdc2 21 */
mbed_official 0:fd0d7bdfcdc2 22 #ifndef MBED_SEMIHOST_H
mbed_official 0:fd0d7bdfcdc2 23 #define MBED_SEMIHOST_H
mbed_official 0:fd0d7bdfcdc2 24
mbed_official 0:fd0d7bdfcdc2 25 #include "device.h"
mbed_official 0:fd0d7bdfcdc2 26 #include "toolchain.h"
mbed_official 0:fd0d7bdfcdc2 27
mbed_official 0:fd0d7bdfcdc2 28 #ifdef __cplusplus
mbed_official 0:fd0d7bdfcdc2 29 extern "C" {
mbed_official 0:fd0d7bdfcdc2 30 #endif
mbed_official 0:fd0d7bdfcdc2 31
mbed_official 0:fd0d7bdfcdc2 32 /* __semihost intrinsic
mbed_official 0:fd0d7bdfcdc2 33 This intrinsic inserts an SVC or BKPT instruction into the instruction stream
mbed_official 0:fd0d7bdfcdc2 34 generated by the compiler. It enables you to make semihosting calls from C or
mbed_official 0:fd0d7bdfcdc2 35 C++ that are independent of the target architecture.
mbed_official 0:fd0d7bdfcdc2 36 */
mbed_official 0:fd0d7bdfcdc2 37 #ifndef __CC_ARM
mbed_official 0:fd0d7bdfcdc2 38 /* Semihost implementation taken from eLua (MIT license):
mbed_official 0:fd0d7bdfcdc2 39 * git://github.com/elua/elua.git/src/semifs.c
mbed_official 0:fd0d7bdfcdc2 40 */
mbed_official 0:fd0d7bdfcdc2 41
mbed_official 0:fd0d7bdfcdc2 42 /* SWI numbers for RDI (Angel) monitors */
mbed_official 0:fd0d7bdfcdc2 43 #ifdef __thumb__
mbed_official 0:fd0d7bdfcdc2 44 #define AngelSWI 0xAB
mbed_official 0:fd0d7bdfcdc2 45 #else
mbed_official 0:fd0d7bdfcdc2 46 #define AngelSWI 0x123456
mbed_official 0:fd0d7bdfcdc2 47 #endif
mbed_official 0:fd0d7bdfcdc2 48 /* For Thumb-2 code use the BKPT instruction instead of SWI */
mbed_official 0:fd0d7bdfcdc2 49 #ifdef __thumb2__
mbed_official 0:fd0d7bdfcdc2 50 #define AngelSWIInsn "bkpt"
mbed_official 0:fd0d7bdfcdc2 51 #define AngelSWIAsm bkpt
mbed_official 0:fd0d7bdfcdc2 52 #else
mbed_official 0:fd0d7bdfcdc2 53 #define AngelSWIInsn "swi"
mbed_official 0:fd0d7bdfcdc2 54 #define AngelSWIAsm swi
mbed_official 0:fd0d7bdfcdc2 55 #endif
mbed_official 0:fd0d7bdfcdc2 56
mbed_official 0:fd0d7bdfcdc2 57 inline int __semihost(int reason, const void *arg) {
mbed_official 0:fd0d7bdfcdc2 58 int value;
mbed_official 0:fd0d7bdfcdc2 59 asm volatile ("mov r0, %1; mov r1, %2; " AngelSWIInsn " %a3; mov %0, r0"
mbed_official 0:fd0d7bdfcdc2 60 : "=r" (value) /* Outputs */
mbed_official 0:fd0d7bdfcdc2 61 : "r" (reason), "r" (arg), "i" (AngelSWI) /* Inputs */
mbed_official 0:fd0d7bdfcdc2 62 : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc"
mbed_official 0:fd0d7bdfcdc2 63 /* Clobbers r0 and r1, and lr if in supervisor mode */);
mbed_official 0:fd0d7bdfcdc2 64 /* Accordingly to page 13-77 of ARM DUI 0040D other registers
mbed_official 0:fd0d7bdfcdc2 65 can also be clobbered. Some memory positions may also be
mbed_official 0:fd0d7bdfcdc2 66 changed by a system call, so they should not be kept in
mbed_official 0:fd0d7bdfcdc2 67 registers. Note: we are assuming the manual is right and
mbed_official 0:fd0d7bdfcdc2 68 Angel is respecting the APCS. */
mbed_official 0:fd0d7bdfcdc2 69
mbed_official 0:fd0d7bdfcdc2 70 return value;
mbed_official 0:fd0d7bdfcdc2 71 }
mbed_official 0:fd0d7bdfcdc2 72
mbed_official 0:fd0d7bdfcdc2 73 #endif
mbed_official 0:fd0d7bdfcdc2 74
mbed_official 0:fd0d7bdfcdc2 75 #if DEVICE_LOCALFILESYSTEM
mbed_official 0:fd0d7bdfcdc2 76 FILEHANDLE semihost_open(const char* name, int openmode);
mbed_official 0:fd0d7bdfcdc2 77 int semihost_close (FILEHANDLE fh);
mbed_official 0:fd0d7bdfcdc2 78 int semihost_read (FILEHANDLE fh, unsigned char* buffer, unsigned int length, int mode);
mbed_official 0:fd0d7bdfcdc2 79 int semihost_write (FILEHANDLE fh, const unsigned char* buffer, unsigned int length, int mode);
mbed_official 0:fd0d7bdfcdc2 80 int semihost_ensure(FILEHANDLE fh);
mbed_official 0:fd0d7bdfcdc2 81 long semihost_flen (FILEHANDLE fh);
mbed_official 0:fd0d7bdfcdc2 82 int semihost_seek (FILEHANDLE fh, long position);
mbed_official 0:fd0d7bdfcdc2 83 int semihost_istty (FILEHANDLE fh);
mbed_official 0:fd0d7bdfcdc2 84
mbed_official 0:fd0d7bdfcdc2 85 int semihost_remove(const char *name);
mbed_official 0:fd0d7bdfcdc2 86 int semihost_rename(const char *old_name, const char *new_name);
mbed_official 0:fd0d7bdfcdc2 87 #endif
mbed_official 0:fd0d7bdfcdc2 88
mbed_official 0:fd0d7bdfcdc2 89 int semihost_uid(char *uid);
mbed_official 0:fd0d7bdfcdc2 90 int semihost_reset(void);
mbed_official 0:fd0d7bdfcdc2 91 int semihost_vbus(void);
mbed_official 0:fd0d7bdfcdc2 92 int semihost_powerdown(void);
mbed_official 0:fd0d7bdfcdc2 93 int semihost_exit(void);
mbed_official 0:fd0d7bdfcdc2 94
mbed_official 0:fd0d7bdfcdc2 95 int semihost_connected(void);
mbed_official 0:fd0d7bdfcdc2 96 int semihost_disabledebug(void);
mbed_official 0:fd0d7bdfcdc2 97
mbed_official 0:fd0d7bdfcdc2 98 #ifdef __cplusplus
mbed_official 0:fd0d7bdfcdc2 99 }
mbed_official 0:fd0d7bdfcdc2 100 #endif
mbed_official 0:fd0d7bdfcdc2 101
mbed_official 0:fd0d7bdfcdc2 102 #endif