Import of Linus's Linux 1.1.68

2 files changed, 264 insertions, 0 deletions

diff --git a/include/asm-generic/bitops.h b/include/asm-generic/bitops.h
new file mode 100644
index 000000000..130619840
--- /dev/null
+++ b/include/asm-generic/bitops.h
@@ -0,0 +1,53 @@
+#ifndef _ASM_GENERIC_BITOPS_H_
+#define _ASM_GENERIC_BITOPS_H_
+
+/*
+ * For the benefit of those who are trying to port Linux to another
+ * architecture, here are some C-language equivalents.  You should
+ * recode these in the native assembly language, if at all possible.
+ * To guarantee atomicity, these routines call cli() and sti() to
+ * disable interrupts while they operate.  (You have to provide inline
+ * routines to cli() and sti().)
+ *
+ * Also note, these routines assume that you have 32 bit integers.
+ * You will have to change this if you are trying to port Linux to the
+ * Alpha architecture or to a Cray.  :-)
+ * 
+ * C language equivalents written by Theodore Ts'o, 9/26/92
+ */
+
+extern __inline__ int set_bit(int nr,int * addr)
+{
+	int	mask, retval;
+
+	addr += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	cli();
+	retval = (mask & *addr) != 0;
+	*addr |= mask;
+	sti();
+	return retval;
+}
+
+extern __inline__ int clear_bit(int nr, int * addr)
+{
+	int	mask, retval;
+
+	addr += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	cli();
+	retval = (mask & *addr) != 0;
+	*addr &= ~mask;
+	sti();
+	return retval;
+}
+
+extern __inline__ int test_bit(int nr, int * addr)
+{
+	int	mask;
+
+	addr += nr >> 5;
+	mask = 1 << (nr & 0x1f);
+	return ((mask & *addr) != 0);
+}
+#endif /* _ASM_GENERIC_BITOPS_H */
diff --git a/include/asm-generic/string.h b/include/asm-generic/string.h
new file mode 100644
index 000000000..03fd6321f
--- /dev/null
+++ b/include/asm-generic/string.h
@@ -0,0 +1,211 @@
+/*
+ * include/asm-generic/string.h
+ *
+ * This file is subject to the terms and conditions of the GNU General Public
+ * License.  See the file "COPYING" in the main directory of this archive
+ * for more details.
+ */
+
+#ifndef _ASM_GENERIC_STRING_H_
+#define _ASM_GENERIC_STRING_H_
+
+/*
+ * Portable string functions. These are not complete:
+ * memcpy() and memmove() are still missing.
+ */ 
+
+#ifdef __USE_PORTABLE_strcpy
+extern inline char * strcpy(char * dest,const char *src)
+{
+  char *xdest = dest;
+                       
+  while(*dest++ = *src++);
+
+  return xdest;
+}
+#endif
+
+#ifdef __USE_PORTABLE_strncpy
+extern inline char * strncpy(char * dest,const char *src,size_t count)
+{
+  char *xdest = dest;
+             
+  while((*dest++ = *src++) && --count);
+
+  return dest;
+}
+#endif
+
+#ifdef __USE_PORTABLE_strcat
+extern inline char * strcat(char * dest, const char * src)
+{
+	char *tmp = dest;
+
+	while (*dest)
+		dest++;
+	while ((*dest++ = *src++))
+		;
+
+	return tmp;
+}
+#endif
+
+#ifdef __USE_PORTABLE_strncat
+extern inline char * strncat(char *dest, const char *src, size_t count)
+{
+	char *tmp = dest;
+
+	if (count) {
+		while (*dest)
+			dest++;
+		while ((*dest++ = *src++)) {
+			if (--count == 0)
+				break;
+		}
+	}
+
+	return tmp;
+}
+#endif
+
+#ifdef __USE_PORTABLE_strcmp
+extern int strcmp(const char * cs,const char * ct)
+{
+  register char __res;
+
+  while(1) {
+    if(__res = *cs - *ct++ && *cs++)
+      break;
+    }
+
+  return __res;
+}
+#endif
+
+#ifdef __USE_PORTABLE_strncmp
+extern inline int strncmp(const char * cs,const char * ct,size_t count)
+{
+  register char __res;
+
+  while(count) {
+    if(__res = *cs - *ct++ || !*cs++)
+      break;
+    count--;
+    }
+
+  return __res;
+}
+#endif
+
+#ifdef __USE_PORTABLE_strchr
+extern inline char * strchr(const char * s,char c)
+{
+  const char ch = c;
+  
+  for(; *s != ch; ++s)
+    if (*s == '\0')
+      return( NULL );
+  return( (char *) s);
+}
+#endif
+
+#ifdef __USE_PORTABLE_strlen
+extern inline size_t strlen(const char * s)
+{
+  const char *sc;
+  for (sc = s; *sc != '\0'; ++sc) ;
+  return(sc - s);
+}
+#endif
+
+#ifdef __USE_PORTABLE_strspn
+extern inline size_t strspn(const char *s, const char *accept)
+{
+  const char *p;
+  const char *a;
+  size_t count = 0;
+
+  for (p = s; *p != '\0'; ++p)
+    {
+      for (a = accept; *a != '\0'; ++a)
+        if (*p == *a)
+          break;
+      if (*a == '\0')
+        return count;
+      else
+        ++count;
+    }
+
+  return count;
+}
+#endif
+
+#ifdef __USE_PORTABLE_strpbrk
+extern inline char * strpbrk(const char * cs,const char * ct)
+{
+  const char *sc1,*sc2;
+  
+  for( sc1 = cs; *sc1 != '\0'; ++sc1)
+    for( sc2 = ct; *sc2 != '\0'; ++sc2)
+      if (*sc1 == *sc2)
+	return((char *) sc1);
+  return( NULL );
+}
+#endif
+
+#ifdef __USE_PORTABLE_strtok
+extern inline char * strtok(char * s,const char * ct)
+{
+  char *sbegin, *send;
+  static char *ssave = NULL;
+  
+  sbegin  = s ? s : ssave;
+  if (!sbegin) {
+	  return NULL;
+  }
+  sbegin += strspn(sbegin,ct);
+  if (*sbegin == '\0') {
+    ssave = NULL;
+    return( NULL );
+  }
+  send = strpbrk( sbegin, ct);
+  if (send && *send != '\0')
+    *send++ = '\0';
+  ssave = send;
+  return (sbegin);
+}
+#endif
+
+#ifdef __USE_PORTABLE_memset
+extern inline void * memset(void * s,char c,size_t count)
+{
+  void *xs = s;
+
+  while(n--)
+    *s++ = c;
+
+  return xs;
+}
+#endif
+
+#ifdef __USE_PORTABLE_memcpy
+#error "Portable memcpy() not implemented yet"
+#endif
+
+#ifdef __USE_PORTABLE_memmove
+#error "Portable memmove() not implemented yet"
+#endif
+
+#ifdef __USE_PORTABLE_memcmp
+extern inline int memcmp(const void * cs,const void * ct,size_t count)
+{
+  const unsigned char *su1, *su2;
+
+  for( su1 = cs, su2 = ct; 0 < count; ++su1, ++su2, count--)
+    if (*su1 != *su2)
+      return((*su1 < *su2) ? -1 : +1);
+  return(0);
+}
+#endif
+
+#endif /* _ASM_GENERIC_STRING_H_ */