diff options
Diffstat (limited to 'sysdeps/i386/i586/strcpy.S')
| -rw-r--r-- | sysdeps/i386/i586/strcpy.S | 30 |
1 files changed, 12 insertions, 18 deletions
diff --git a/sysdeps/i386/i586/strcpy.S b/sysdeps/i386/i586/strcpy.S index 93ff5ac74d..19bed86b45 100644 --- a/sysdeps/i386/i586/strcpy.S +++ b/sysdeps/i386/i586/strcpy.S @@ -1,5 +1,5 @@ /* strcpy/stpcpy implementation for i586. - Copyright (C) 1997-2016 Free Software Foundation, Inc. + Copyright (C) 1997-2018 Free Software Foundation, Inc. This file is part of the GNU C Library. Contributed by Ulrich Drepper <drepper@cygnus.com>, 1997. @@ -53,41 +53,35 @@ ENTRY (STRCPY) cfi_rel_offset (ebx, 0) andl $3, %ecx -#ifdef PIC - call 2f - cfi_adjust_cfa_offset (4) -2: popl %edx - cfi_adjust_cfa_offset (-4) - /* 0xb is the distance between 2: and 1: but we avoid writing - 1f-2b because the assembler generates worse code. */ - leal 0xb(%edx,%ecx,8), %ecx -#else - leal 1f(,%ecx,8), %ecx -#endif - - jmp *%ecx + cmpb $2, %cl + je L(Src2) + ja L(Src3) + cmpb $1, %cl + je L(Src1) - .align 8 -1: +L(Src0): orb (%esi), %al jz L(end) stosb xorl %eax, %eax incl %esi +L(Src1): orb (%esi), %al jz L(end) stosb xorl %eax, %eax incl %esi +L(Src2): orb (%esi), %al jz L(end) stosb xorl %eax, %eax incl %esi -L(1): movl (%esi), %ecx +L(Src3): + movl (%esi), %ecx leal 4(%esi),%esi subl %ecx, %eax @@ -107,7 +101,7 @@ L(1): movl (%esi), %ecx movl %edx, (%edi) leal 4(%edi),%edi - jmp L(1) + jmp L(Src3) L(3): movl %ecx, %edx |