Improve x86-32 strcat functions with SSE2/SSSE3

1 files changed, 573 insertions, 0 deletions

diff --git a/sysdeps/i386/i686/multiarch/strcat-ssse3.S b/sysdeps/i386/i686/multiarch/strcat-ssse3.S
new file mode 100644
index 0000000000..d03b40a5f3
--- /dev/null
+++ b/sysdeps/i386/i686/multiarch/strcat-ssse3.S
@@ -0,0 +1,573 @@
+/* strcat with SSSE3
+   Copyright (C) 2011 Free Software Foundation, Inc.
+   Contributed by Intel Corporation.
+   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, write to the Free
+   Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
+   02111-1307 USA.  */
+
+
+#ifndef NOT_IN_libc
+
+# include <sysdep.h>
+
+# define CFI_PUSH(REG)	\
+	cfi_adjust_cfa_offset (4);	\
+	cfi_rel_offset (REG, 0)
+
+# define CFI_POP(REG)	\
+	cfi_adjust_cfa_offset (-4);	\
+	cfi_restore (REG)
+
+# define PUSH(REG) pushl REG; CFI_PUSH (REG)
+# define POP(REG) popl REG; CFI_POP (REG)
+
+# ifndef STRCAT
+#  define STRCAT  __strcat_ssse3
+# endif
+
+# define PARMS  4
+# define STR1  PARMS+4
+# define STR2  STR1+4
+
+# ifdef USE_AS_STRNCAT
+#  define LEN STR2+8
+# endif
+
+# define USE_AS_STRCAT
+
+.text
+ENTRY (STRCAT)
+	PUSH	(%edi)
+	mov	STR1(%esp), %edi
+	mov	%edi, %edx
+
+# define RETURN  jmp L(StartStrcpyPart)
+# include "strlen-sse2.S"
+
+L(StartStrcpyPart):
+	mov	STR2(%esp), %ecx
+	lea	(%edi, %eax), %edx
+# ifdef USE_AS_STRNCAT
+	PUSH	(%ebx)
+	mov	LEN(%esp), %ebx
+	test	%ebx, %ebx
+	jz	L(StrncatExit0)
+	cmp	$8, %ebx
+	jbe	L(StrncatExit8Bytes)
+# endif
+	cmpb	$0, (%ecx)
+	jz	L(Exit1)
+	cmpb	$0, 1(%ecx)
+	jz	L(Exit2)
+	cmpb	$0, 2(%ecx)
+	jz	L(Exit3)
+	cmpb	$0, 3(%ecx)
+	jz	L(Exit4)
+	cmpb	$0, 4(%ecx)
+	jz	L(Exit5)
+	cmpb	$0, 5(%ecx)
+	jz	L(Exit6)
+	cmpb	$0, 6(%ecx)
+	jz	L(Exit7)
+	cmpb	$0, 7(%ecx)
+	jz	L(Exit8)
+	cmpb	$0, 8(%ecx)
+	jz	L(Exit9)
+# ifdef USE_AS_STRNCAT
+	cmp	$16, %ebx
+	jb	L(StrncatExit15Bytes)
+# endif
+	cmpb	$0, 9(%ecx)
+	jz	L(Exit10)
+	cmpb	$0, 10(%ecx)
+	jz	L(Exit11)
+	cmpb	$0, 11(%ecx)
+	jz	L(Exit12)
+	cmpb	$0, 12(%ecx)
+	jz	L(Exit13)
+	cmpb	$0, 13(%ecx)
+	jz	L(Exit14)
+	cmpb	$0, 14(%ecx)
+	jz	L(Exit15)
+	cmpb	$0, 15(%ecx)
+	jz	L(Exit16)
+# ifdef USE_AS_STRNCAT
+	cmp	$16, %ebx
+	je	L(StrncatExit16)
+
+#  define RETURN1	\
+	POP	(%ebx);	\
+	POP	(%edi);	\
+	ret;	\
+	CFI_PUSH	(%ebx);	\
+	CFI_PUSH	(%edi)
+#  define USE_AS_STRNCPY
+# else
+#  define RETURN1  POP (%edi); ret; CFI_PUSH (%edi)
+# endif
+# include "strcpy-ssse3.S"
+	.p2align 4
+L(CopyFrom1To16Bytes):
+	add	%esi, %edx
+	add	%esi, %ecx
+
+	POP	(%esi)
+	test	%al, %al
+	jz	L(ExitHigh)
+	test	$0x01, %al
+	jnz	L(Exit1)
+	test	$0x02, %al
+	jnz	L(Exit2)
+	test	$0x04, %al
+	jnz	L(Exit3)
+	test	$0x08, %al
+	jnz	L(Exit4)
+	test	$0x10, %al
+	jnz	L(Exit5)
+	test	$0x20, %al
+	jnz	L(Exit6)
+	test	$0x40, %al
+	jnz	L(Exit7)
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(ExitHigh):
+	test	$0x01, %ah
+	jnz	L(Exit9)
+	test	$0x02, %ah
+	jnz	L(Exit10)
+	test	$0x04, %ah
+	jnz	L(Exit11)
+	test	$0x08, %ah
+	jnz	L(Exit12)
+	test	$0x10, %ah
+	jnz	L(Exit13)
+	test	$0x20, %ah
+	jnz	L(Exit14)
+	test	$0x40, %ah
+	jnz	L(Exit15)
+	movlpd	(%ecx), %xmm0
+	movlpd	8(%ecx), %xmm1
+	movlpd	%xmm0, (%edx)
+	movlpd	%xmm1, 8(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit1):
+	movb	%bh, 1(%edx)
+L(Exit1):
+	movb	(%ecx), %al
+	movb	%al, (%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit2):
+	movb	%bh, 2(%edx)
+L(Exit2):
+	movw	(%ecx), %ax
+	movw	%ax, (%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit3):
+	movb	%bh, 3(%edx)
+L(Exit3):
+	movw	(%ecx), %ax
+	movw	%ax, (%edx)
+	movb	2(%ecx), %al
+	movb	%al, 2(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit4):
+	movb	%bh, 4(%edx)
+L(Exit4):
+	movl	(%ecx), %eax
+	movl	%eax, (%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit5):
+	movb	%bh, 5(%edx)
+L(Exit5):
+	movl	(%ecx), %eax
+	movl	%eax, (%edx)
+	movb	4(%ecx), %al
+	movb	%al, 4(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit6):
+	movb	%bh, 6(%edx)
+L(Exit6):
+	movl	(%ecx), %eax
+	movl	%eax, (%edx)
+	movw	4(%ecx), %ax
+	movw	%ax, 4(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit7):
+	movb	%bh, 7(%edx)
+L(Exit7):
+	movl	(%ecx), %eax
+	movl	%eax, (%edx)
+	movl	3(%ecx), %eax
+	movl	%eax, 3(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit8):
+	movb	%bh, 8(%edx)
+L(Exit8):
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit9):
+	movb	%bh, 9(%edx)
+L(Exit9):
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movb	8(%ecx), %al
+	movb	%al, 8(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit10):
+	movb	%bh, 10(%edx)
+L(Exit10):
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movw	8(%ecx), %ax
+	movw	%ax, 8(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit11):
+	movb	%bh, 11(%edx)
+L(Exit11):
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movl	7(%ecx), %eax
+	movl	%eax, 7(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit12):
+	movb	%bh, 12(%edx)
+L(Exit12):
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movl	8(%ecx), %eax
+	movl	%eax, 8(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit13):
+	movb	%bh, 13(%edx)
+L(Exit13):
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movlpd	5(%ecx), %xmm0
+	movlpd	%xmm0, 5(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit14):
+	movb	%bh, 14(%edx)
+L(Exit14):
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movlpd	6(%ecx), %xmm0
+	movlpd	%xmm0, 6(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit15):
+	movb	%bh, 15(%edx)
+L(Exit15):
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movlpd	7(%ecx), %xmm0
+	movlpd	%xmm0, 7(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit16):
+	movb	%bh, 16(%edx)
+L(Exit16):
+	movlpd	(%ecx), %xmm0
+	movlpd	8(%ecx), %xmm1
+	movlpd	%xmm0, (%edx)
+	movlpd	%xmm1, 8(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+# ifdef USE_AS_STRNCPY
+
+	CFI_PUSH(%esi)
+
+	.p2align 4
+L(CopyFrom1To16BytesCase2):
+	add	$16, %ebx
+	add	%esi, %ecx
+	lea	(%esi, %edx), %esi
+	lea	-9(%ebx), %edx
+	and	$1<<7, %dh
+	or	%al, %dh
+	test	%dh, %dh
+	lea	(%esi), %edx
+	POP	(%esi)
+	jz	L(ExitHighCase2)
+
+	test	$0x01, %al
+	jnz	L(Exit1)
+	cmp	$1, %ebx
+	je	L(StrncatExit1)
+	test	$0x02, %al
+	jnz	L(Exit2)
+	cmp	$2, %ebx
+	je	L(StrncatExit2)
+	test	$0x04, %al
+	jnz	L(Exit3)
+	cmp	$3, %ebx
+	je	L(StrncatExit3)
+	test	$0x08, %al
+	jnz	L(Exit4)
+	cmp	$4, %ebx
+	je	L(StrncatExit4)
+	test	$0x10, %al
+	jnz	L(Exit5)
+	cmp	$5, %ebx
+	je	L(StrncatExit5)
+	test	$0x20, %al
+	jnz	L(Exit6)
+	cmp	$6, %ebx
+	je	L(StrncatExit6)
+	test	$0x40, %al
+	jnz	L(Exit7)
+	cmp	$7, %ebx
+	je	L(StrncatExit7)
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	lea	7(%edx), %eax
+	cmpb	$1, (%eax)
+	sbb	$-1, %eax
+	xor	%cl, %cl
+	movb	%cl, (%eax)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(ExitHighCase2):
+	test	$0x01, %ah
+	jnz	L(Exit9)
+	cmp	$9, %ebx
+	je	L(StrncatExit9)
+	test	$0x02, %ah
+	jnz	L(Exit10)
+	cmp	$10, %ebx
+	je	L(StrncatExit10)
+	test	$0x04, %ah
+	jnz	L(Exit11)
+	cmp	$11, %ebx
+	je	L(StrncatExit11)
+	test	$0x8, %ah
+	jnz	L(Exit12)
+	cmp	$12, %ebx
+	je	L(StrncatExit12)
+	test	$0x10, %ah
+	jnz	L(Exit13)
+	cmp	$13, %ebx
+	je	L(StrncatExit13)
+	test	$0x20, %ah
+	jnz	L(Exit14)
+	cmp	$14, %ebx
+	je	L(StrncatExit14)
+	test	$0x40, %ah
+	jnz	L(Exit15)
+	cmp	$15, %ebx
+	je	L(StrncatExit15)
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movlpd	8(%ecx), %xmm1
+	movlpd	%xmm1, 8(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	CFI_PUSH(%esi)
+
+L(CopyFrom1To16BytesCase2OrCase3):
+	test	%eax, %eax
+	jnz	L(CopyFrom1To16BytesCase2)
+
+	.p2align 4
+L(CopyFrom1To16BytesCase3):
+	add	$16, %ebx
+	add	%esi, %edx
+	add	%esi, %ecx
+
+	POP	(%esi)
+
+	cmp	$8, %ebx
+	ja	L(ExitHighCase3)
+	cmp	$1, %ebx
+	je	L(StrncatExit1)
+	cmp	$2, %ebx
+	je	L(StrncatExit2)
+	cmp	$3, %ebx
+	je	L(StrncatExit3)
+	cmp	$4, %ebx
+	je	L(StrncatExit4)
+	cmp	$5, %ebx
+	je	L(StrncatExit5)
+	cmp	$6, %ebx
+	je	L(StrncatExit6)
+	cmp	$7, %ebx
+	je	L(StrncatExit7)
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movb	%bh, 8(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(ExitHighCase3):
+	cmp	$9, %ebx
+	je	L(StrncatExit9)
+	cmp	$10, %ebx
+	je	L(StrncatExit10)
+	cmp	$11, %ebx
+	je	L(StrncatExit11)
+	cmp	$12, %ebx
+	je	L(StrncatExit12)
+	cmp	$13, %ebx
+	je	L(StrncatExit13)
+	cmp	$14, %ebx
+	je	L(StrncatExit14)
+	cmp	$15, %ebx
+	je	L(StrncatExit15)
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movlpd	8(%ecx), %xmm1
+	movlpd	%xmm1, 8(%edx)
+	movb	%bh, 16(%edx)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit0):
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit15Bytes):
+	cmp	$9, %ebx
+	je	L(StrncatExit9)
+	cmpb	$0, 9(%ecx)
+	jz	L(Exit10)
+	cmp	$10, %ebx
+	je	L(StrncatExit10)
+	cmpb	$0, 10(%ecx)
+	jz	L(Exit11)
+	cmp	$11, %ebx
+	je	L(StrncatExit11)
+	cmpb	$0, 11(%ecx)
+	jz	L(Exit12)
+	cmp	$12, %ebx
+	je	L(StrncatExit12)
+	cmpb	$0, 12(%ecx)
+	jz	L(Exit13)
+	cmp	$13, %ebx
+	je	L(StrncatExit13)
+	cmpb	$0, 13(%ecx)
+	jz	L(Exit14)
+	cmp	$14, %ebx
+	je	L(StrncatExit14)
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	movlpd	7(%ecx), %xmm0
+	movlpd	%xmm0, 7(%edx)
+	lea	14(%edx), %eax
+	cmpb	$1, (%eax)
+	sbb	$-1, %eax
+	movb	%bh, (%eax)
+	movl	%edi, %eax
+	RETURN1
+
+	.p2align 4
+L(StrncatExit8Bytes):
+	cmpb	$0, (%ecx)
+	jz	L(Exit1)
+	cmp	$1, %ebx
+	je	L(StrncatExit1)
+	cmpb	$0, 1(%ecx)
+	jz	L(Exit2)
+	cmp	$2, %ebx
+	je	L(StrncatExit2)
+	cmpb	$0, 2(%ecx)
+	jz	L(Exit3)
+	cmp	$3, %ebx
+	je	L(StrncatExit3)
+	cmpb	$0, 3(%ecx)
+	jz	L(Exit4)
+	cmp	$4, %ebx
+	je	L(StrncatExit4)
+	cmpb	$0, 4(%ecx)
+	jz	L(Exit5)
+	cmp	$5, %ebx
+	je	L(StrncatExit5)
+	cmpb	$0, 5(%ecx)
+	jz	L(Exit6)
+	cmp	$6, %ebx
+	je	L(StrncatExit6)
+	cmpb	$0, 6(%ecx)
+	jz	L(Exit7)
+	cmp	$7, %ebx
+	je	L(StrncatExit7)
+	movlpd	(%ecx), %xmm0
+	movlpd	%xmm0, (%edx)
+	lea	7(%edx), %eax
+	cmpb	$1, (%eax)
+	sbb	$-1, %eax
+	movb	%bh, (%eax)
+	movl	%edi, %eax
+	RETURN1
+
+# endif
+END (STRCAT)
+#endif