mbed library sources modified for open wear
Dependents: openwear-lifelogger-example
Fork of mbed-src by
Diff: capi/semihost_api.h
- Revision:
- 2:143cac498751
- Parent:
- 0:fd0d7bdfcdc2
- Child:
- 3:c24f5ba8a7f9
--- a/capi/semihost_api.h Thu Nov 29 15:41:14 2012 +0000 +++ b/capi/semihost_api.h Mon Feb 18 11:44:18 2013 +0000 @@ -1,23 +1,17 @@ /* mbed Microcontroller Library - * Copyright (c) 2006-2012 ARM Limited + * Copyright (c) 2006-2013 ARM Limited * - * Permission is hereby granted, free of charge, to any person obtaining a copy - * of this software and associated documentation files (the "Software"), to deal - * in the Software without restriction, including without limitation the rights - * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell - * copies of the Software, and to permit persons to whom the Software is - * furnished to do so, subject to the following conditions: + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at * - * The above copyright notice and this permission notice shall be included in - * all copies or substantial portions of the Software. + * http://www.apache.org/licenses/LICENSE-2.0 * - * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR - * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, - * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE - * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER - * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE - * SOFTWARE. + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. */ #ifndef MBED_SEMIHOST_H #define MBED_SEMIHOST_H @@ -29,47 +23,42 @@ extern "C" { #endif -/* __semihost intrinsic - This intrinsic inserts an SVC or BKPT instruction into the instruction stream - generated by the compiler. It enables you to make semihosting calls from C or - C++ that are independent of the target architecture. - */ +#if DEVICE_SEMIHOST + #ifndef __CC_ARM -/* Semihost implementation taken from eLua (MIT license): - * git://github.com/elua/elua.git/src/semifs.c - */ -/* SWI numbers for RDI (Angel) monitors */ +#if defined(__ICCARM__) +inline int __semihost(int reason, const void *arg) { + return __semihosting(reason, (void*)arg); +} +#else + #ifdef __thumb__ -#define AngelSWI 0xAB +# define AngelSWI 0xAB +# define AngelSWIInsn "bkpt" +# define AngelSWIAsm bkpt #else -#define AngelSWI 0x123456 -#endif -/* For Thumb-2 code use the BKPT instruction instead of SWI */ -#ifdef __thumb2__ -#define AngelSWIInsn "bkpt" -#define AngelSWIAsm bkpt -#else -#define AngelSWIInsn "swi" -#define AngelSWIAsm swi +# define AngelSWI 0x123456 +# define AngelSWIInsn "swi" +# define AngelSWIAsm swi #endif inline int __semihost(int reason, const void *arg) { int value; - asm volatile ("mov r0, %1; mov r1, %2; " AngelSWIInsn " %a3; mov %0, r0" - : "=r" (value) /* Outputs */ - : "r" (reason), "r" (arg), "i" (AngelSWI) /* Inputs */ - : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" - /* Clobbers r0 and r1, and lr if in supervisor mode */); - /* Accordingly to page 13-77 of ARM DUI 0040D other registers - can also be clobbered. Some memory positions may also be - changed by a system call, so they should not be kept in - registers. Note: we are assuming the manual is right and - Angel is respecting the APCS. */ - + + asm volatile ( + "mov r0, %1" "\n\t" + "mov r1, %2" "\n\t" + AngelSWIInsn " %a3" "\n\t" + "mov %0, r0" + : "=r" (value) /* output operands */ + : "r" (reason), "r" (arg), "i" (AngelSWI) /* input operands */ + : "r0", "r1", "r2", "r3", "ip", "lr", "memory", "cc" /* list of clobbered registers */ + ); + return value; } - +#endif #endif #if DEVICE_LOCALFILESYSTEM @@ -95,6 +84,8 @@ int semihost_connected(void); int semihost_disabledebug(void); +#endif + #ifdef __cplusplus } #endif