M68K: drop the custom C arch_cpu_user_mem*() for the default impl

I didn't notice there was a C++ version that didn't require writing asm.

I'll have to write them anyway for speed someday.

headers/private/kernel/arch/user_memory.h

@@ -13,6 +13,8 @@
 
 #ifdef __x86_64__
 #	include <arch/generic/user_memory.h>
+#elif defined(__M68K__)
+#	include <arch/generic/user_memory.h>
 #else
 
 extern "C" {

src/system/kernel/arch/m68k/arch_cpu.cpp

@@ -171,95 +171,6 @@ arch_cpu_user_TLB_invalidate(void)
 }
 
 
-// TODO: all functions that use fault handlers need to be implemented
-// in assembly due to problems passing in label addresses in gcc4.
-status_t
-arch_cpu_user_memcpy(void *to, const void *from, size_t size,
-	addr_t *faultHandler)
-{
-	char *tmp = (char *)to;
-	char *s = (char *)from;
-	addr_t oldFaultHandler = *faultHandler;
-
-// TODO: This doesn't work correctly with gcc 4 anymore!
-	if (m68k_set_fault_handler(faultHandler, (addr_t)&&error))
-		goto error;
-
-	while (size--)
-		*tmp++ = *s++;
-
-	*faultHandler = oldFaultHandler;
-	return 0;
-
-error:
-	*faultHandler = oldFaultHandler;
-	return B_BAD_ADDRESS;
-}
-
-
-/**	\brief Copies at most (\a size - 1) characters from the string in \a from to
- *	the string in \a to, NULL-terminating the result.
- *
- *	\param to Pointer to the destination C-string.
- *	\param from Pointer to the source C-string.
- *	\param size Size in bytes of the string buffer pointed to by \a to.
- *
- *	\return strlen(\a from).
- */
-
-ssize_t
-arch_cpu_user_strlcpy(char *to, const char *from, size_t size, addr_t *faultHandler)
-{
-	int from_length = 0;
-	addr_t oldFaultHandler = *faultHandler;
-
-// TODO: This doesn't work correctly with gcc 4 anymore!
-	if (m68k_set_fault_handler(faultHandler, (addr_t)&&error))
-		goto error;
-
-	if (size > 0) {
-		to[--size] = '\0';
-		// copy
-		for ( ; size; size--, from_length++, to++, from++) {
-			if ((*to = *from) == '\0')
-				break;
-		}
-	}
-	// count any leftover from chars
-	while (*from++ != '\0')
-		from_length++;
-
-	*faultHandler = oldFaultHandler;
-	return from_length;
-
-error:
-	*faultHandler = oldFaultHandler;
-	return B_BAD_ADDRESS;
-}
-
-
-status_t
-arch_cpu_user_memset(void *s, char c, size_t count, addr_t *faultHandler)
-{
-	char *xs = (char *)s;
-	addr_t oldFaultHandler = *faultHandler;
-
-// TODO: This doesn't work correctly with gcc 4 anymore!
-	if (m68k_set_fault_handler(faultHandler, (addr_t)&&error))
-		goto error;
-
-	while (count--)
-		*xs++ = c;
-
-	*faultHandler = oldFaultHandler;
-	return 0;
-
-error:
-	*faultHandler = oldFaultHandler;
-	return B_BAD_ADDRESS;
-}
-
-
 status_t
 arch_cpu_shutdown(bool reboot)
 {