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Diffstat (limited to 'payloads/libpayload/arch/i386/string.c')
-rw-r--r--payloads/libpayload/arch/i386/string.c103
1 files changed, 0 insertions, 103 deletions
diff --git a/payloads/libpayload/arch/i386/string.c b/payloads/libpayload/arch/i386/string.c
deleted file mode 100644
index 19047eee9e..0000000000
--- a/payloads/libpayload/arch/i386/string.c
+++ /dev/null
@@ -1,103 +0,0 @@
-/*
- * Copyright (C) 1991,1992,1993,1997,1998,2003, 2005 Free Software Foundation, Inc.
- * This file is part of the GNU C Library.
- * Copyright (c) 2011 The Chromium OS Authors.
- *
- * See file CREDITS for list of people who contributed to this
- * project.
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU 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 General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
- * MA 02111-1307 USA
- */
-
-/* From glibc-2.14, sysdeps/i386/memset.c */
-
-#include <stdint.h>
-
-#include "string.h"
-
-typedef uint32_t op_t;
-
-void *memset(void *dstpp, int c, size_t len)
-{
- int d0;
- unsigned long int dstp = (unsigned long int) dstpp;
-
- /* This explicit register allocation improves code very much indeed. */
- register op_t x asm("ax");
-
- x = (unsigned char) c;
-
- /* Clear the direction flag, so filling will move forward. */
- asm volatile("cld");
-
- /* This threshold value is optimal. */
- if (len >= 12) {
- /* Fill X with four copies of the char we want to fill with. */
- x |= (x << 8);
- x |= (x << 16);
-
- /* Adjust LEN for the bytes handled in the first loop. */
- len -= (-dstp) % sizeof(op_t);
-
- /*
- * There are at least some bytes to set. No need to test for
- * LEN == 0 in this alignment loop.
- */
-
- /* Fill bytes until DSTP is aligned on a longword boundary. */
- asm volatile(
- "rep\n"
- "stosb" /* %0, %2, %3 */ :
- "=D" (dstp), "=c" (d0) :
- "0" (dstp), "1" ((-dstp) % sizeof(op_t)), "a" (x) :
- "memory");
-
- /* Fill longwords. */
- asm volatile(
- "rep\n"
- "stosl" /* %0, %2, %3 */ :
- "=D" (dstp), "=c" (d0) :
- "0" (dstp), "1" (len / sizeof(op_t)), "a" (x) :
- "memory");
- len %= sizeof(op_t);
- }
-
- /* Write the last few bytes. */
- asm volatile(
- "rep\n"
- "stosb" /* %0, %2, %3 */ :
- "=D" (dstp), "=c" (d0) :
- "0" (dstp), "1" (len), "a" (x) :
- "memory");
-
- return dstpp;
-}
-
-void *memcpy(void *dest, const void *src, size_t n)
-{
- unsigned long d0, d1, d2;
-
- asm volatile(
- "rep ; movsl\n\t"
- "movl %4,%%ecx\n\t"
- "rep ; movsb\n\t"
- : "=&c" (d0), "=&D" (d1), "=&S" (d2)
- : "0" (n >> 2), "g" (n & 3), "1" (dest), "2" (src)
- : "memory"
- );
-
- return dest;
-}