diff options
Diffstat (limited to 'source/hal/source/components/stdout/source/retarget.c')
| -rw-r--r-- | source/hal/source/components/stdout/source/retarget.c | 278 |
1 files changed, 278 insertions, 0 deletions
diff --git a/source/hal/source/components/stdout/source/retarget.c b/source/hal/source/components/stdout/source/retarget.c new file mode 100644 index 0000000..ac9b282 --- /dev/null +++ b/source/hal/source/components/stdout/source/retarget.c @@ -0,0 +1,278 @@ +/* + * Copyright (c) 2022 Arm Limited. All rights reserved. + * SPDX-License-Identifier: Apache-2.0 + * + * 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 + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * 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. + */ +#if !defined(USE_SEMIHOSTING) + +#include "uart_stdout.h" + +#include <stdio.h> +#include <string.h> +#include <time.h> + +#if defined(__ARMCC_VERSION) && (__ARMCC_VERSION >= 6100100) +/* Arm compiler re-targeting */ + +#include <rt_misc.h> +#include <rt_sys.h> + + +/* Standard IO device handles. */ +#define STDIN 0x8001 +#define STDOUT 0x8002 +#define STDERR 0x8003 + +#define RETARGET(fun) _sys##fun + +#else +/* GNU compiler re-targeting */ + +/* + * This type is used by the _ I/O functions to denote an open + * file. + */ +typedef int FILEHANDLE; + +/* + * Open a file. May return -1 if the file failed to open. + */ +extern FILEHANDLE _open(const char * /*name*/, int /*openmode*/); + +/* Standard IO device handles. */ +#define STDIN 0x00 +#define STDOUT 0x01 +#define STDERR 0x02 + +#define RETARGET(fun) fun + +#endif + +/* Standard IO device name defines. */ +const char __stdin_name[] __attribute__((aligned(4))) = "STDIN"; +const char __stdout_name[] __attribute__((aligned(4))) = "STDOUT"; +const char __stderr_name[] __attribute__((aligned(4))) = "STDERR"; + +__attribute__((noreturn)) static void UartEndSimulation(int code) +{ + UartPutc((char) 0x4); // End of simulation + UartPutc((char) code); // Exit code + while(1); +} + +void _ttywrch(int ch) { + (void)fputc(ch, stdout); +} + +FILEHANDLE RETARGET(_open)(const char *name, int openmode) +{ + (void)(openmode); + + if (strcmp(name, __stdin_name) == 0) { + return (STDIN); + } + + if (strcmp(name, __stdout_name) == 0) { + return (STDOUT); + } + + if (strcmp(name, __stderr_name) == 0) { + return (STDERR); + } + + return -1; +} + +int RETARGET(_write)(FILEHANDLE fh, const unsigned char *buf, unsigned int len, int mode) +{ + (void)(mode); + + switch (fh) { + case STDOUT: + case STDERR: { + int c; + + while (len-- > 0) { + c = fputc(*buf++, stdout); + if (c == EOF) { + return EOF; + } + } + + return 0; + } + default: + return EOF; + } +} + +int RETARGET(_read)(FILEHANDLE fh, unsigned char *buf, unsigned int len, int mode) +{ + (void)(mode); + + switch (fh) { + case STDIN: { + int c; + + while (len-- > 0) { + c = fgetc(stdin); + if (c == EOF) { + return EOF; + } + + *buf++ = (unsigned char)c; + } + + return 0; + } + default: + return EOF; + } +} + +int RETARGET(_istty)(FILEHANDLE fh) +{ + switch (fh) { + case STDIN: + case STDOUT: + case STDERR: + return 1; + default: + return 0; + } +} + +int RETARGET(_close)(FILEHANDLE fh) +{ + if (RETARGET(_istty(fh))) { + return 0; + } + + return -1; +} + +int RETARGET(_seek)(FILEHANDLE fh, long pos) +{ + (void)(fh); + (void)(pos); + + return -1; +} + +int RETARGET(_ensure)(FILEHANDLE fh) +{ + (void)(fh); + + return -1; +} + +long RETARGET(_flen)(FILEHANDLE fh) +{ + if (RETARGET(_istty)(fh)) { + return 0; + } + + return -1; +} + +int RETARGET(_tmpnam)(char *name, int sig, unsigned int maxlen) +{ + (void)(name); + (void)(sig); + (void)(maxlen); + + return 1; +} + +char *RETARGET(_command_string)(char *cmd, int len) +{ + (void)(len); + + return cmd; +} + +void RETARGET(_exit)(int return_code) +{ + UartEndSimulation(return_code); + while(1); +} + +int system(const char *cmd) +{ + (void)(cmd); + + return 0; +} + +time_t time(time_t *timer) +{ + time_t current; + + current = 0; // To Do !! No RTC implemented + + if (timer != NULL) { + *timer = current; + } + + return current; +} + +void _clock_init(void) {} + +clock_t clock(void) +{ + return (clock_t)-1; +} + +int remove(const char *arg) { + (void)(arg); + + return 0; +} + +int rename(const char *oldn, const char *newn) +{ + (void)(oldn); + (void)(newn); + + return 0; +} + +int fputc(int ch, FILE *f) +{ + (void)(f); + + return UartPutc(ch); +} + +int fgetc(FILE *f) +{ + (void)(f); + + return UartPutc(UartGetc()); +} + +#ifndef ferror + +/* arm-none-eabi-gcc with newlib uses a define for ferror */ +int ferror(FILE *f) +{ + (void)(f); + + return EOF; +} + +#endif /* #ifndef ferror */ + +#endif /* !defined(USE_SEMIHOSTING) */ |