import newlib-2000-02-17 snapshot

1 files changed, 131 insertions, 0 deletions

diff --git a/newlib/libc/sys/m88kbug/syscalls.c b/newlib/libc/sys/m88kbug/syscalls.c
new file mode 100644
index 000000000..32f42a925
--- /dev/null
+++ b/newlib/libc/sys/m88kbug/syscalls.c
@@ -0,0 +1,131 @@
+/* Operating system  and traps for mvme187bug, the motorolola BUG
+   monitor for m88k */
+
+#include <sys/types.h>
+#include <sys/stat.h>
+#include <sys/times.h>
+#include <errno.h>
+
+#include "sys/systraps.h"
+
+static void writechar(int c) {
+  register int n asm ("r2");
+  n = c;
+  SYSTRAP(OUTCHR);
+  return;
+}
+
+static int readchar(void) {
+  register int n asm ("r2");
+  SYSTRAP(INCHR);
+  return(n);
+}
+
+int read(int file, char *ptr, int len) {
+  int todo;
+
+  for (todo = len; todo; --todo) {
+    *ptr++ = readchar();
+  }
+
+  return(len);
+}
+
+int lseek(int file, int ptr, int dir) {
+  return 0;
+}
+
+int write(int file, char *ptr, int len) {
+  int todo;
+  
+  for (todo = len; todo; --todo) {
+    writechar(*ptr++);
+  }
+  return(len);
+}
+
+int close(int file) {
+  return(-1);
+}
+
+caddr_t sbrk(int incr) {
+  extern char end;		/* Defined by the linker */
+  static char *heap_end;
+  char *prev_heap_end;
+
+  if (heap_end == 0) 
+  {
+    heap_end = &end;
+  }
+  prev_heap_end = heap_end;
+  if (heap_end + incr > stack_ptr)
+    {
+      _write (1, "Heap and stack collision\n", 25);
+      abort ();
+    }
+  heap_end += incr;
+  return((caddr_t) prev_heap_end);
+}
+
+int isatty(int file) {
+  return(1);
+}
+
+int fstat(int file, struct stat *st) {
+  st->st_mode = S_IFCHR;
+  return(0);
+}
+
+int stat(char *filename, struct stat *st) {
+  st->st_mode = S_IFCHR;
+  return(0);
+}
+
+int open(const char *path, int flags) {
+  return(0);
+}
+
+
+int _exit() {
+  SYSTRAP(RETURN);
+}
+
+int execve(char *name, char **argv, char **env) {
+  errno = ENOMEM;
+  return(-1);
+}
+
+int fork() {
+  errno = EAGAIN;
+  return(-1);
+}
+
+int getpid() {
+  return(1);
+}
+
+int kill(int pid, int sig) {
+  errno = EINVAL;
+  return(-1);
+}
+
+int link(char *old, char *new) {
+  errno = EMLINK;
+  return(-1);
+}
+
+clock_t times(struct tms *buf) {
+  return(-1);
+}
+
+int unlink(char *name) {
+  errno = ENOENT;
+  return(-1);
+}
+
+int wait(int *status) {
+  errno = ECHILD;
+  return(-1);
+}
+
+/* end of syscalls.c */