mirror of
https://github.com/openmv/openmv.git
synced 2025-11-04 14:49:50 +08:00
Remove old syscalls file
This commit is contained in:
parent
a44be5d38b
commit
8493538076
@ -32,7 +32,6 @@ stm32f4xx_hal_usart.c\
|
||||
stm32f4xx_ll_usb.c\
|
||||
stm32f4xx_ll_sdmmc.c\
|
||||
stm32f4xx_ll_fmc.c\
|
||||
syscalls.c\
|
||||
)
|
||||
|
||||
OBJS = $(addprefix $(BUILD)/, $(SRCS:.c=.o))
|
||||
|
||||
@ -1,281 +0,0 @@
|
||||
#include <errno.h>
|
||||
#include <sys/stat.h>
|
||||
#include <sys/times.h>
|
||||
#include <sys/unistd.h>
|
||||
#include <stdint.h>
|
||||
|
||||
#ifndef UNUSED
|
||||
#define UNUSED(x) (void)x
|
||||
#endif
|
||||
|
||||
#ifndef STDOUT_USART
|
||||
#define STDOUT_USART 2
|
||||
#endif
|
||||
|
||||
#ifndef STDERR_USART
|
||||
#define STDERR_USART 2
|
||||
#endif
|
||||
|
||||
#ifndef STDIN_USART
|
||||
#define STDIN_USART 2
|
||||
#endif
|
||||
|
||||
#undef errno
|
||||
extern int errno;
|
||||
|
||||
/*
|
||||
* A pointer to a list of environment variables and their values.
|
||||
* For a minimal environment, this empty list is adequate.
|
||||
*/
|
||||
char *__env[1] = { 0 };
|
||||
char **environ = __env;
|
||||
|
||||
int _write(int file, char *ptr, int len);
|
||||
|
||||
void _exit(int status) {
|
||||
UNUSED(status);
|
||||
|
||||
_write(1, "exit", 4);
|
||||
while (1) {
|
||||
;
|
||||
}
|
||||
}
|
||||
|
||||
int _close(int file) {
|
||||
UNUSED(file);
|
||||
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Transfer control to a new process. Minimal implementation (for a system
|
||||
* without processes)
|
||||
*/
|
||||
int _execve(char *name, char **argv, char **env) {
|
||||
UNUSED(name);
|
||||
UNUSED(argv);
|
||||
UNUSED(env);
|
||||
|
||||
errno = ENOMEM;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Create a new process. Minimal implementation (for a system without processes)
|
||||
*/
|
||||
int _fork() {
|
||||
errno = EAGAIN;
|
||||
return -1;
|
||||
}
|
||||
/*
|
||||
* Status of an open file. Minimal implementation.
|
||||
*/
|
||||
int _fstat(int file, struct stat *st) {
|
||||
UNUSED(file);
|
||||
|
||||
st->st_mode = S_IFCHR;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Process-ID; this is sometimes used to generate strings unlikely to conflict
|
||||
* with other processes. Minimal implementation, for a system without processes.
|
||||
*/
|
||||
int _getpid() {
|
||||
return 1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Query whether output stream is a terminal. For consistency with the other
|
||||
* minimal implementation.
|
||||
*/
|
||||
int _isatty(int file) {
|
||||
UNUSED(file);
|
||||
|
||||
switch (file) {
|
||||
case STDOUT_FILENO:
|
||||
case STDERR_FILENO:
|
||||
case STDIN_FILENO:
|
||||
return 1;
|
||||
default:
|
||||
//errno = ENOTTY;
|
||||
errno = EBADF;
|
||||
return 0;
|
||||
}
|
||||
}
|
||||
|
||||
/*
|
||||
* Send a signal. Minimal implementation.
|
||||
*/
|
||||
int _kill(int pid, int sig) {
|
||||
UNUSED(pid);
|
||||
UNUSED(sig);
|
||||
|
||||
errno = EINVAL;
|
||||
return (-1);
|
||||
}
|
||||
|
||||
/*
|
||||
* Establish a new name for an existing file. Minimal implementation.
|
||||
*/
|
||||
int _link(char *old, char *new) {
|
||||
UNUSED(old);
|
||||
UNUSED(new);
|
||||
|
||||
errno = EMLINK;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Set position in a file. Minimal implementation.
|
||||
*/
|
||||
int _lseek(int file, int ptr, int dir) {
|
||||
UNUSED(file);
|
||||
UNUSED(ptr);
|
||||
UNUSED(dir);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Increase program data space. Malloc and related functions depend on this.
|
||||
*/
|
||||
caddr_t _sbrk(int incr) {
|
||||
extern char _ebss; // Defined by the linker
|
||||
extern char _estack; // Defined by the linker
|
||||
static char *heap_end;
|
||||
char *prev_heap_end;
|
||||
|
||||
if (heap_end == 0) {
|
||||
heap_end = &_ebss;
|
||||
}
|
||||
prev_heap_end = heap_end;
|
||||
|
||||
if (heap_end + incr > &_estack){
|
||||
_write (STDERR_FILENO, "Heap and stack collision\n", 25);
|
||||
errno = ENOMEM;
|
||||
return (caddr_t) - 1;
|
||||
//abort ();
|
||||
}
|
||||
|
||||
heap_end += incr;
|
||||
return (caddr_t) prev_heap_end;
|
||||
|
||||
}
|
||||
|
||||
/*
|
||||
* Read a character to a file. `libc' subroutines will use this system routine
|
||||
* for input from all files, including stdin.
|
||||
* Returns -1 on error or blocks until the number of characters have been read.
|
||||
*/
|
||||
int _read(int file, char *ptr, int len) {
|
||||
// int n;
|
||||
int num = 0;
|
||||
#if 0
|
||||
switch (file) {
|
||||
case STDIN_FILENO:
|
||||
for (n = 0; n < len; n++) {
|
||||
#if STDIN_USART == 1
|
||||
while ((USART1->ISR & USART_FLAG_RXNE) == (uint16_t)RESET) {}
|
||||
char c = (char)(USART1->TDR & (uint16_t)0x01FF);
|
||||
#elif STDIN_USART == 2
|
||||
while ((USART2->ISR & USART_FLAG_RXNE) == (uint16_t) RESET) {}
|
||||
char c = (char) (USART2->TDR & (uint16_t) 0x01FF);
|
||||
#elif STDIN_USART == 3
|
||||
while ((USART3->ISR & USART_FLAG_RXNE) == (uint16_t)RESET) {}
|
||||
char c = (char)(USART3->TDR & (uint16_t)0x01FF);
|
||||
#endif
|
||||
*ptr++ = c;
|
||||
num++;
|
||||
}
|
||||
break;
|
||||
default:
|
||||
errno = EBADF;
|
||||
return -1;
|
||||
}
|
||||
#endif
|
||||
return num;
|
||||
}
|
||||
|
||||
/*
|
||||
* Status of a file (by name). Minimal implementation.
|
||||
* int _EXFUN(stat,( const char *__path, struct stat *__sbuf ));
|
||||
*/
|
||||
int _stat(const char *filepath, struct stat *st) {
|
||||
UNUSED(filepath);
|
||||
st->st_mode = S_IFCHR;
|
||||
return 0;
|
||||
}
|
||||
|
||||
/*
|
||||
* Timing information for current process. Minimal implementation.
|
||||
*/
|
||||
clock_t _times(struct tms *buf) {
|
||||
UNUSED(buf);
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Remove a file's directory entry. Minimal implementation.
|
||||
*/
|
||||
int _unlink(char *name) {
|
||||
UNUSED(name);
|
||||
errno = ENOENT;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Wait for a child process. Minimal implementation.
|
||||
*/
|
||||
int _wait(int *status) {
|
||||
UNUSED(status);
|
||||
errno = ECHILD;
|
||||
return -1;
|
||||
}
|
||||
|
||||
/*
|
||||
* Write a character to a file. `libc' subroutines will use this system routine
|
||||
* for output to all files, including stdout.
|
||||
* Returns -1 on error or number of bytes sent.
|
||||
*/
|
||||
int _write(int file, char *ptr, int len) {
|
||||
#if 0
|
||||
int n;
|
||||
switch (file) {
|
||||
case STDOUT_FILENO: /*stdout*/
|
||||
for (n = 0; n < len; n++) {
|
||||
#if STDOUT_USART == 1
|
||||
while ((USART1->ISR & USART_FLAG_TXE) == (uint16_t)RESET) {}
|
||||
USART1->TDR = (*ptr++ & (uint16_t)0x01FF);
|
||||
#elif STDOUT_USART == 2
|
||||
while ((USART2->ISR & USART_FLAG_TXE) == (uint16_t) RESET) {
|
||||
}
|
||||
USART2->TDR = (*ptr++ & (uint16_t) 0x01FF);
|
||||
#elif STDOUT_USART == 3
|
||||
while ((USART3->ISR & USART_FLAG_TXE) == (uint16_t)RESET) {}
|
||||
USART3->TDR = (*ptr++ & (uint16_t)0x01FF);
|
||||
#endif
|
||||
}
|
||||
break;
|
||||
case STDERR_FILENO: /* stderr */
|
||||
for (n = 0; n < len; n++) {
|
||||
#if STDERR_USART == 1
|
||||
while ((USART1->ISR & USART_FLAG_TXE) == (uint16_t)RESET) {}
|
||||
USART1->TDR = (*ptr++ & (uint16_t)0x01FF);
|
||||
#elif STDERR_USART == 2
|
||||
while ((USART2->ISR & USART_FLAG_TXE) == (uint16_t) RESET) {
|
||||
}
|
||||
USART2->TDR = (*ptr++ & (uint16_t) 0x01FF);
|
||||
#elif STDERR_USART == 3
|
||||
while ((USART3->ISR & USART_FLAG_TXE) == (uint16_t)RESET) {}
|
||||
USART3->TDR = (*ptr++ & (uint16_t)0x01FF);
|
||||
#endif
|
||||
}
|
||||
break;
|
||||
default:
|
||||
errno = EBADF;
|
||||
return -1;
|
||||
}
|
||||
#endif
|
||||
return len;
|
||||
}
|
||||
Loading…
Reference in New Issue
Block a user