Split up MSRC file, bzero left out

1 files changed, 0 insertions, 213 deletions

diff --git a/libc/string/powerpc/string.c b/libc/string/powerpc/string.c
deleted file mode 100644
index d02deda08..000000000
--- a/libc/string/powerpc/string.c
+++ /dev/null
@@ -1,213 +0,0 @@
-/*
- * This program is free software; you can redistribute it and/or modify it under
- * the terms of the GNU Library General Public License as published by the Free
- * Software Foundation; either version 2 of the License, or (at your option) any
- * later version.
- *
- * This program is distributed in the hope that it will be useful, but WITHOUT
- * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
- * FOR A PARTICULAR PURPOSE. See the GNU Library General Public License for more
- * details.
- */
-
-/* These are carefully optimized mem*() functions for PPC written in C.
- * Don't muck around with these function without checking the generated
- * assmbler code.
- * It is possible to optimize these significantly more by using specific
- * data cache instructions(mainly dcbz). However that requires knownledge
- * about the CPU's cache line size.
- *
- * BUG ALERT!
- * The cache instructions on MPC8xx CPU's are buggy(they don't update
- * the DAR register when causing a DTLB Miss/Error) and cannot be
- * used on 8xx CPU's without a kernel patch to work around this
- * problem.
- *   
- * Copyright (C) 2004 Joakim Tjernlund
- */
-
-#define _GNU_SOURCE
-#include <string.h>
-#include <locale.h> /* for __LOCALE_C_ONLY */
-
-#ifdef L_memcpy
-void attribute_hidden *__memcpy(void *to, const void *from, size_t n)
-/* PPC can do pre increment and load/store, but not post increment and load/store.
-   Therefore use *++ptr instead of *ptr++. */
-{
-	unsigned long rem, chunks, tmp1, tmp2;
-	unsigned char *tmp_to;
-	unsigned char *tmp_from = (unsigned char *)from;
-
-	chunks = n / 8;
-	tmp_from -= 4;
-	tmp_to = to - 4;
-	if (!chunks)
-		goto lessthan8;
-	rem = (unsigned long )tmp_to % 4;
-	if (rem)
-		goto align;
- copy_chunks:
-	do {
-		/* make gcc to load all data, then store it */
-		tmp1 = *(unsigned long *)(tmp_from+4);
-		tmp_from += 8;
-		tmp2 = *(unsigned long *)tmp_from;
-		*(unsigned long *)(tmp_to+4) = tmp1;
-		tmp_to += 8;
-		*(unsigned long *)tmp_to = tmp2;
-	} while (--chunks);
- lessthan8:
-	n = n % 8;
-	if (n >= 4) {
-		*(unsigned long *)(tmp_to+4) = *(unsigned long *)(tmp_from+4);
-		tmp_from += 4;
-		tmp_to += 4;
-		n = n-4;
-	}
-	if (!n ) return to;
-	tmp_from += 3;
-	tmp_to += 3;
-	do {
-		*++tmp_to = *++tmp_from;
-	} while (--n);
-	
-	return to;
- align:
-	rem = 4 - rem;
-	n = n - rem;
-	do {
-		*(tmp_to+4) = *(tmp_from+4);
-		++tmp_from;
-		++tmp_to;
-	} while (--rem);
-	chunks = n / 8;
-	if (chunks)
-		goto copy_chunks;
-	goto lessthan8;
-}
-strong_alias(__memcpy, memcpy);
-#endif
-
-#ifdef L_memmove
-void attribute_hidden *__memmove(void *to, const void *from, size_t n)
-{
-	unsigned long rem, chunks, tmp1, tmp2;
-	unsigned char *tmp_to;
-	unsigned char *tmp_from = (unsigned char *)from;
-
-	if (tmp_from >= (unsigned char *)to)
-		return memcpy(to, from, n);
-	chunks = n / 8;
-	tmp_from += n;
-	tmp_to = to + n;
-	if (!chunks)
-		goto lessthan8;
-	rem = (unsigned long )tmp_to % 4;
-	if (rem)
-		goto align;
- copy_chunks:
-	do {
-		/* make gcc to load all data, then store it */
-		tmp1 = *(unsigned long *)(tmp_from-4);
-		tmp_from -= 8;
-		tmp2 = *(unsigned long *)tmp_from;
-		*(unsigned long *)(tmp_to-4) = tmp1;
-		tmp_to -= 8;
-		*(unsigned long *)tmp_to = tmp2;
-	} while (--chunks);
- lessthan8:
-	n = n % 8;
-	if (n >= 4) {
-		*(unsigned long *)(tmp_to-4) = *(unsigned long *)(tmp_from-4);
-		tmp_from -= 4;
-		tmp_to -= 4;
-		n = n-4;
-	}
-	if (!n ) return to;
-	do {
-		*--tmp_to = *--tmp_from;
-	} while (--n);
-	
-	return to;
- align:
-	rem = 4 - rem;
-	n = n - rem;
-	do {
-		*--tmp_to = *--tmp_from;
-	} while (--rem);
-	chunks = n / 8;
-	if (chunks)
-		goto copy_chunks;
-	goto lessthan8;
-}
-strong_alias(__memmove, memmove);
-#endif
-
-#ifdef L_memset
-static inline int expand_byte_word(int c){
-	/* this does: 
-	   c = c << 8 | c;
-	   c = c << 16 | c ;
-	*/
-	asm("rlwimi	%0,%0,8,16,23\n"
-	    "\trlwimi	%0,%0,16,0,15\n"
-	    : "=r" (c) : "0" (c));
-	return c;
-}
-void attribute_hidden *__memset(void *to, int c, size_t n)
-{
-	unsigned long rem, chunks;
-	unsigned char *tmp_to;
-
-	chunks = n / 8;
-	tmp_to = to - 4;
-	c = expand_byte_word(c);
-	if (!chunks)
-		goto lessthan8;
-	rem = (unsigned long )tmp_to % 4;
-	if (rem)
-		goto align;
- copy_chunks:
-	do {
-		*(unsigned long *)(tmp_to+4) = c;
-		tmp_to += 4;
-		*(unsigned long *)(tmp_to+4) = c;
-		tmp_to += 4;
-	} while (--chunks);
- lessthan8:
-	n = n % 8;
-	if (n >= 4) {
-		*(unsigned long *)(tmp_to+4) = c;
-		tmp_to += 4;
-		n = n-4;
-	}
-	if (!n ) return to;
-	tmp_to += 3;
-	do {
-		*++tmp_to = c;
-	} while (--n);
-	
-	return to;
- align:
-	rem = 4 - rem;
-	n = n-rem;
-	do {
-		*(tmp_to+4) = c;
-		++tmp_to;
-	} while (--rem);
-	chunks = n / 8;
-	if (chunks)
-		goto copy_chunks;
-	goto lessthan8;
-}
-strong_alias(__memset, memset);
-#endif
-
-#ifdef L_bzero
-weak_alias(__bzero,bzero);
-void __bzero(void *s, size_t n)
-{
-	(void)memset(s, 0, n);
-}
-#endif