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-rw-r--r--sysdeps/i386/memcmp.S73
1 files changed, 0 insertions, 73 deletions
diff --git a/sysdeps/i386/memcmp.S b/sysdeps/i386/memcmp.S
deleted file mode 100644
index 01f8f8ef03..0000000000
--- a/sysdeps/i386/memcmp.S
+++ /dev/null
@@ -1,73 +0,0 @@
-/* Compare two memory blocks for differences in the first COUNT bytes.
- Copyright (C) 1995-2017 Free Software Foundation, Inc.
- This file is part of the GNU C Library.
-
- The GNU C Library is free software; you can redistribute it and/or
- modify it under the terms of the GNU Lesser General Public
- License as published by the Free Software Foundation; either
- version 2.1 of the License, or (at your option) any later version.
-
- The GNU C Library 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
- Lesser General Public License for more details.
-
- You should have received a copy of the GNU Lesser General Public
- License along with the GNU C Library; if not, see
- <http://www.gnu.org/licenses/>. */
-
-#include <sysdep.h>
-#include "asm-syntax.h"
-
-#define PARMS 4+4 /* space for 1 saved reg */
-#define BLK1 PARMS
-#define BLK2 BLK1+4
-#define LEN BLK2+4
-
- .text
-ENTRY (memcmp)
-
- pushl %esi /* Save callee-safe registers. */
- cfi_adjust_cfa_offset (4)
- movl %edi, %edx /* Note that %edx is not used and can
- so be used to save %edi. It's faster. */
- cfi_register (edi, edx)
-
- movl BLK1(%esp), %esi
- cfi_rel_offset (esi, 0)
- movl BLK2(%esp), %edi
- movl LEN(%esp), %ecx
-
- cld /* Set direction of comparison. */
-
- xorl %eax, %eax /* Default result. */
-
- repe /* Compare at most %ecx bytes. */
- cmpsb
- jz L(1) /* If even last byte was equal we return 0. */
-
- /* The memory blocks are not equal. So result of the last
- subtraction is present in the carry flag. It is set when
- the byte in block #2 is bigger. In this case we have to
- return -1 (=0xffffffff), else 1. */
- sbbl %eax, %eax /* This is tricky. %eax == 0 and carry is set
- or not depending on last subtraction. */
-
- /* At this point %eax == 0, if the byte of block #1 was bigger, and
- 0xffffffff if the last byte of block #2 was bigger. The latter
- case is already correct but the former needs a little adjustment.
- Note that the following operation does not change 0xffffffff. */
- orb $1, %al /* Change 0 to 1. */
-
-L(1): popl %esi /* Restore registers. */
- cfi_adjust_cfa_offset (-4)
- cfi_restore (esi)
- movl %edx, %edi
- cfi_restore (edi)
-
- ret
-END (memcmp)
-
-#undef bcmp
-weak_alias (memcmp, bcmp)
-libc_hidden_builtin_def (memcmp)