diff options
Diffstat (limited to 'openpcd/firmware/src/os/syscalls.c')
| -rw-r--r-- | openpcd/firmware/src/os/syscalls.c | 169 |
1 files changed, 0 insertions, 169 deletions
diff --git a/openpcd/firmware/src/os/syscalls.c b/openpcd/firmware/src/os/syscalls.c deleted file mode 100644 index ed989f1..0000000 --- a/openpcd/firmware/src/os/syscalls.c +++ /dev/null @@ -1,169 +0,0 @@ -/***********************************************************************/ -/* */ -/* SYSCALLS.C: System Calls */ -/* most of this is from newlib-lpc and a Keil-demo */ -/* */ -/* These are "reentrant functions" as needed by */ -/* the WinARM-newlib-config, see newlib-manual. */ -/* Collected and modified by Martin Thomas */ -/* */ -/***********************************************************************/ - - -#include <stdlib.h> -#include <reent.h> -#include <sys/stat.h> - -#include <board.h> - -static void my_putc(char c) -{ - while (!AT91F_US_TxReady((AT91PS_USART)AT91C_BASE_DBGU)); - AT91F_US_PutChar((AT91PS_USART)AT91C_BASE_DBGU, c); -} - -static int my_kbhit( void ) -{ - if ((AT91F_US_RxReady((AT91PS_USART)AT91C_BASE_DBGU)) == 0) return 0; - else return 1; -} - -static char my_getc( void ) -{ - return AT91F_US_GetChar((AT91PS_USART)AT91C_BASE_DBGU); -} - -_ssize_t _read_r( - struct _reent *r, - int file, - void *ptr, - size_t len) -{ - char c; - int i; - unsigned char *p; - - p = (unsigned char*)ptr; - - for (i = 0; i < len; i++) { - // c = uart0Getch(); - // c = uart0GetchW(); - while ( !my_kbhit() ) ; - c = (char) my_getc(); - if (c == 0x0D) { - *p='\0'; - break; - } - *p++ = c; - ////// uart0_putc(c); - } - return len - i; -} - - -_ssize_t _write_r ( - struct _reent *r, - int file, - const void *ptr, - size_t len) -{ - int i; - const unsigned char *p; - - p = (const unsigned char*) ptr; - - for (i = 0; i < len; i++) { - if (*p == '\n' ) my_putc('\r'); - my_putc(*p++); - } - - return len; -} - - -int _close_r( - struct _reent *r, - int file) -{ - return 0; -} - - -_off_t _lseek_r( - struct _reent *r, - int file, - _off_t ptr, - int dir) -{ - return (_off_t)0; /* Always indicate we are at file beginning. */ -} - - -int _fstat_r( - struct _reent *r, - int file, - struct stat *st) -{ - /* Always set as character device. */ - st->st_mode = S_IFCHR; - /* assigned to strong type with implicit */ - /* signed/unsigned conversion. Required by */ - /* newlib. */ - - return 0; -} - - -int isatty(int file); /* avoid warning */ - -int isatty(int file) -{ - return 1; -} - - -#if 0 -static void _exit (int n) { -label: goto label; /* endless loop */ -} -#endif - - -/* "malloc clue function" from newlib-lpc/Keil-Demo/"generic" */ - -/**** Locally used variables. ****/ -// mt: "cleaner": extern char* end; -extern char end[]; /* end is set in the linker command */ - /* file and is the end of statically */ - /* allocated data (thus start of heap). */ - -static char *heap_ptr; /* Points to current end of the heap. */ - -/************************** _sbrk_r ************************************* - * Support function. Adjusts end of heap to provide more memory to - * memory allocator. Simple and dumb with no sanity checks. - - * struct _reent *r -- re-entrancy structure, used by newlib to - * support multiple threads of operation. - * ptrdiff_t nbytes -- number of bytes to add. - * Returns pointer to start of new heap area. - * - * Note: This implementation is not thread safe (despite taking a - * _reent structure as a parameter). - * Since _s_r is not used in the current implementation, - * the following messages must be suppressed. - */ -void * _sbrk_r( - struct _reent *_s_r, - ptrdiff_t nbytes) -{ - char *base; /* errno should be set to ENOMEM on error */ - - if (!heap_ptr) { /* Initialize if first time through. */ - heap_ptr = end; - } - base = heap_ptr; /* Point to end of heap. */ - heap_ptr += nbytes; /* Increase heap. */ - - return base; /* Return pointer to start of new heap area. */ -} |