--- /dev/null
+/* strcmp with SSE4.2
+ Copyright (C) 2009, 2010, 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. */
+
+
+/* We use 0x1a:
+ _SIDD_SBYTE_OPS
+ | _SIDD_CMP_EQUAL_EACH
+ | _SIDD_NEGATIVE_POLARITY
+ | _SIDD_LEAST_SIGNIFICANT
+ on pcmpistri to find out if two 16byte data elements are the same
+ and the offset of the first different byte. There are 4 cases:
+
+ 1. Both 16byte data elements are valid and identical.
+ 2. Both 16byte data elements have EOS and identical.
+ 3. Both 16byte data elements are valid and they differ at offset X.
+ 4. At least one 16byte data element has EOS at offset X. Two 16byte
+ data elements must differ at or before offset X.
+
+ Here is the table of ECX, CFlag, ZFlag and SFlag for 4 cases:
+
+ case ECX CFlag ZFlag SFlag
+ 1 16 0 0 0
+ 2 16 0 1 1
+ 3 X 1 0 0
+ 4 0 <= X 1 0/1 0/1
+
+ We exit from the loop for cases 2, 3 and 4 with jbe which branches
+ when either CFlag or ZFlag is 1. If CFlag == 0, we return 0 for
+ case 2. */
+
+ /* Put all SSE 4.2 functions together. */
+ .section .text.SECTION,"ax",@progbits
+ .align 16
+ .type STRCMP_SSE42, @function
+#ifdef USE_AS_STRCASECMP_L
+ENTRY (GLABEL(__strcasecmp))
+ movq __libc_tsd_LOCALE@gottpoff(%rip),%rax
+ movq %fs:(%rax),%rdx
+
+ // XXX 5 byte should be before the function
+ /* 5-byte NOP. */
+ .byte 0x0f,0x1f,0x44,0x00,0x00
+END (GLABEL(__strcasecmp))
+ /* FALLTHROUGH to strcasecmp_l. */
+#endif
+#ifdef USE_AS_STRNCASECMP_L
+ENTRY (GLABEL(__strncasecmp))
+ movq __libc_tsd_LOCALE@gottpoff(%rip),%rax
+ movq %fs:(%rax),%rcx
+
+ // XXX 5 byte should be before the function
+ /* 5-byte NOP. */
+ .byte 0x0f,0x1f,0x44,0x00,0x00
+END (GLABEL(__strncasecmp))
+ /* FALLTHROUGH to strncasecmp_l. */
+#endif
+
+STRCMP_SSE42:
+ cfi_startproc
+ CALL_MCOUNT
+
+/*
+ * This implementation uses SSE to compare up to 16 bytes at a time.
+ */
+#ifdef USE_AS_STRCASECMP_L
+ /* We have to fall back on the C implementation for locales
+ with encodings not matching ASCII for single bytes. */
+# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
+ movq LOCALE_T___LOCALES+LC_CTYPE*8(%rdx), %rax
+# else
+ movq (%rdx), %rax
+# endif
+ testl $0, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
+ jne __strcasecmp_l_nonascii
+#endif
+#ifdef USE_AS_STRNCASECMP_L
+ /* We have to fall back on the C implementation for locales
+ with encodings not matching ASCII for single bytes. */
+# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
+ movq LOCALE_T___LOCALES+LC_CTYPE*8(%rcx), %rax
+# else
+ movq (%rcx), %rax
+# endif
+ testl $0, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
+ jne __strncasecmp_l_nonascii
+#endif
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ test %rdx, %rdx
+ je LABEL(strcmp_exitz)
+ cmp $1, %rdx
+ je LABEL(Byte0)
+ mov %rdx, %r11
+#endif
+ mov %esi, %ecx
+ mov %edi, %eax
+/* Use 64bit AND here to avoid long NOP padding. */
+ and $0x3f, %rcx /* rsi alignment in cache line */
+ and $0x3f, %rax /* rdi alignment in cache line */
+#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+ .section .rodata.cst16,"aM",@progbits,16
+ .align 16
+LABEL(belowupper):
+ .quad 0x4040404040404040
+ .quad 0x4040404040404040
+LABEL(topupper):
+# ifdef USE_AVX
+ .quad 0x5a5a5a5a5a5a5a5a
+ .quad 0x5a5a5a5a5a5a5a5a
+# else
+ .quad 0x5b5b5b5b5b5b5b5b
+ .quad 0x5b5b5b5b5b5b5b5b
+# endif
+LABEL(touppermask):
+ .quad 0x2020202020202020
+ .quad 0x2020202020202020
+ .previous
+ movdqa LABEL(belowupper)(%rip), %xmm4
+# define UCLOW_reg %xmm4
+ movdqa LABEL(topupper)(%rip), %xmm5
+# define UCHIGH_reg %xmm5
+ movdqa LABEL(touppermask)(%rip), %xmm6
+# define LCQWORD_reg %xmm6
+#endif
+ cmp $0x30, %ecx
+ ja LABEL(crosscache)/* rsi: 16-byte load will cross cache line */
+ cmp $0x30, %eax
+ ja LABEL(crosscache)/* rdi: 16-byte load will cross cache line */
+ movdqu (%rdi), %xmm1
+ movdqu (%rsi), %xmm2
+#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+# ifdef USE_AVX
+# define TOLOWER(reg1, reg2) \
+ vpcmpgtb UCLOW_reg, reg1, %xmm7; \
+ vpcmpgtb UCHIGH_reg, reg1, %xmm8; \
+ vpcmpgtb UCLOW_reg, reg2, %xmm9; \
+ vpcmpgtb UCHIGH_reg, reg2, %xmm10; \
+ vpandn %xmm7, %xmm8, %xmm8; \
+ vpandn %xmm9, %xmm10, %xmm10; \
+ vpand LCQWORD_reg, %xmm8, %xmm8; \
+ vpand LCQWORD_reg, %xmm10, %xmm10; \
+ vpor reg1, %xmm8, reg1; \
+ vpor reg2, %xmm10, reg2
+# else
+# define TOLOWER(reg1, reg2) \
+ movdqa reg1, %xmm7; \
+ movdqa UCHIGH_reg, %xmm8; \
+ movdqa reg2, %xmm9; \
+ movdqa UCHIGH_reg, %xmm10; \
+ pcmpgtb UCLOW_reg, %xmm7; \
+ pcmpgtb reg1, %xmm8; \
+ pcmpgtb UCLOW_reg, %xmm9; \
+ pcmpgtb reg2, %xmm10; \
+ pand %xmm8, %xmm7; \
+ pand %xmm10, %xmm9; \
+ pand LCQWORD_reg, %xmm7; \
+ pand LCQWORD_reg, %xmm9; \
+ por %xmm7, reg1; \
+ por %xmm9, reg2
+# endif
+ TOLOWER (%xmm1, %xmm2)
+#else
+# define TOLOWER(reg1, reg2)
+#endif
+ pxor %xmm0, %xmm0 /* clear %xmm0 for null char checks */
+ pcmpeqb %xmm1, %xmm0 /* Any null chars? */
+ pcmpeqb %xmm2, %xmm1 /* compare first 16 bytes for equality */
+ psubb %xmm0, %xmm1 /* packed sub of comparison results*/
+ pmovmskb %xmm1, %edx
+ sub $0xffff, %edx /* if first 16 bytes are same, edx == 0xffff */
+ jnz LABEL(less16bytes)/* If not, find different value or null char */
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)/* finish comparision */
+#endif
+ add $16, %rsi /* prepare to search next 16 bytes */
+ add $16, %rdi /* prepare to search next 16 bytes */
+
+ /*
+ * Determine source and destination string offsets from 16-byte
+ * alignment. Use relative offset difference between the two to
+ * determine which case below to use.
+ */
+ .p2align 4
+LABEL(crosscache):
+ and $0xfffffffffffffff0, %rsi /* force %rsi is 16 byte aligned */
+ and $0xfffffffffffffff0, %rdi /* force %rdi is 16 byte aligned */
+ mov $0xffff, %edx /* for equivalent offset */
+ xor %r8d, %r8d
+ and $0xf, %ecx /* offset of rsi */
+ and $0xf, %eax /* offset of rdi */
+ cmp %eax, %ecx
+ je LABEL(ashr_0) /* rsi and rdi relative offset same */
+ ja LABEL(bigger)
+ mov %edx, %r8d /* r8d is offset flag for exit tail */
+ xchg %ecx, %eax
+ xchg %rsi, %rdi
+LABEL(bigger):
+ lea 15(%rax), %r9
+ sub %rcx, %r9
+ lea LABEL(unaligned_table)(%rip), %r10
+ movslq (%r10, %r9,4), %r9
+ lea (%r10, %r9), %r10
+ jmp *%r10 /* jump to corresponding case */
+
+/*
+ * The following cases will be handled by ashr_0
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(0~15) n(0~15) 15(15+ n-n) ashr_0
+ */
+ .p2align 4
+LABEL(ashr_0):
+
+ movdqa (%rsi), %xmm1
+ pxor %xmm0, %xmm0 /* clear %xmm0 for null char check */
+ pcmpeqb %xmm1, %xmm0 /* Any null chars? */
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpeqb (%rdi), %xmm1 /* compare 16 bytes for equality */
+#else
+ movdqa (%rdi), %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm2, %xmm1 /* compare 16 bytes for equality */
+#endif
+ psubb %xmm0, %xmm1 /* packed sub of comparison results*/
+ pmovmskb %xmm1, %r9d
+ shr %cl, %edx /* adjust 0xffff for offset */
+ shr %cl, %r9d /* adjust for 16-byte offset */
+ sub %r9d, %edx
+ /*
+ * edx must be the same with r9d if in left byte (16-rcx) is equal to
+ * the start from (16-rax) and no null char was seen.
+ */
+ jne LABEL(less32bytes) /* mismatch or null char */
+ UPDATE_STRNCMP_COUNTER
+ mov $16, %rcx
+ mov $16, %r9
+ pxor %xmm0, %xmm0 /* clear xmm0, may have changed above */
+
+ /*
+ * Now both strings are aligned at 16-byte boundary. Loop over strings
+ * checking 32-bytes per iteration.
+ */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+ .p2align 4
+LABEL(ashr_0_use):
+ movdqa (%rdi,%rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ lea 16(%rdx), %rdx
+ jbe LABEL(ashr_0_exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ movdqa (%rdi,%rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ lea 16(%rdx), %rdx
+ jbe LABEL(ashr_0_exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ jmp LABEL(ashr_0_use)
+
+
+ .p2align 4
+LABEL(ashr_0_exit_use):
+ jnc LABEL(strcmp_exitz)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub %rcx, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ lea -16(%rdx, %rcx), %rcx
+ movzbl (%rdi, %rcx), %eax
+ movzbl (%rsi, %rcx), %edx
+#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+ leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
+ movl (%rcx,%rax,4), %eax
+ movl (%rcx,%rdx,4), %edx
+#endif
+ sub %edx, %eax
+ ret
+
+
+
+/*
+ * The following cases will be handled by ashr_1
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(15) n -15 0(15 +(n-15) - n) ashr_1
+ */
+ .p2align 4
+LABEL(ashr_1):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0 /* Any null chars? */
+ pslldq $15, %xmm2 /* shift first string to align with second */
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2 /* compare 16 bytes for equality */
+ psubb %xmm0, %xmm2 /* packed sub of comparison results*/
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx /* adjust 0xffff for offset */
+ shr %cl, %r9d /* adjust for 16-byte offset */
+ sub %r9d, %edx
+ jnz LABEL(less32bytes) /* mismatch or null char seen */
+ movdqa (%rdi), %xmm3
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads*/
+ mov $1, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 1(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_1_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_1_use)
+
+LABEL(nibble_ashr_1_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $1, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_1_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $1, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_1_use)
+
+ .p2align 4
+LABEL(nibble_ashr_1_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $1, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $14, %ecx
+ ja LABEL(nibble_ashr_1_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_2
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(14~15) n -14 1(15 +(n-14) - n) ashr_2
+ */
+ .p2align 4
+LABEL(ashr_2):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $14, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $2, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 2(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_2_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_2_use)
+
+LABEL(nibble_ashr_2_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $2, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_2_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $2, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_2_use)
+
+ .p2align 4
+LABEL(nibble_ashr_2_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $2, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $13, %ecx
+ ja LABEL(nibble_ashr_2_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_3
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(13~15) n -13 2(15 +(n-13) - n) ashr_3
+ */
+ .p2align 4
+LABEL(ashr_3):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $13, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $3, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 3(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+LABEL(loop_ashr_3_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_3_use)
+
+LABEL(nibble_ashr_3_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $3, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_3_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $3, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_3_use)
+
+ .p2align 4
+LABEL(nibble_ashr_3_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $3, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $12, %ecx
+ ja LABEL(nibble_ashr_3_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_4
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(12~15) n -12 3(15 +(n-12) - n) ashr_4
+ */
+ .p2align 4
+LABEL(ashr_4):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $12, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $4, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 4(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_4_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_4_use)
+
+LABEL(nibble_ashr_4_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $4, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_4_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $4, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_4_use)
+
+ .p2align 4
+LABEL(nibble_ashr_4_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $4, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $11, %ecx
+ ja LABEL(nibble_ashr_4_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_5
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(11~15) n - 11 4(15 +(n-11) - n) ashr_5
+ */
+ .p2align 4
+LABEL(ashr_5):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $11, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $5, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 5(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_5_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_5_use)
+
+LABEL(nibble_ashr_5_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $5, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_5_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+
+ palignr $5, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_5_use)
+
+ .p2align 4
+LABEL(nibble_ashr_5_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $5, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $10, %ecx
+ ja LABEL(nibble_ashr_5_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_6
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(10~15) n - 10 5(15 +(n-10) - n) ashr_6
+ */
+ .p2align 4
+LABEL(ashr_6):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $10, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $6, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 6(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_6_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_6_use)
+
+LABEL(nibble_ashr_6_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $6, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_6_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $6, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_6_use)
+
+ .p2align 4
+LABEL(nibble_ashr_6_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $6, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $9, %ecx
+ ja LABEL(nibble_ashr_6_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_7
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(9~15) n - 9 6(15 +(n - 9) - n) ashr_7
+ */
+ .p2align 4
+LABEL(ashr_7):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $9, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $7, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 7(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_7_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_7_use)
+
+LABEL(nibble_ashr_7_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $7, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_7_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $7, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_7_use)
+
+ .p2align 4
+LABEL(nibble_ashr_7_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $7, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $8, %ecx
+ ja LABEL(nibble_ashr_7_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_8
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(8~15) n - 8 7(15 +(n - 8) - n) ashr_8
+ */
+ .p2align 4
+LABEL(ashr_8):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $8, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $8, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 8(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_8_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_8_use)
+
+LABEL(nibble_ashr_8_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $8, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_8_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $8, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_8_use)
+
+ .p2align 4
+LABEL(nibble_ashr_8_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $8, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $7, %ecx
+ ja LABEL(nibble_ashr_8_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_9
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(7~15) n - 7 8(15 +(n - 7) - n) ashr_9
+ */
+ .p2align 4
+LABEL(ashr_9):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $7, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $9, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 9(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_9_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_9_use)
+
+LABEL(nibble_ashr_9_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+
+ palignr $9, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_9_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $9, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_9_use)
+
+ .p2align 4
+LABEL(nibble_ashr_9_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $9, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $6, %ecx
+ ja LABEL(nibble_ashr_9_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_10
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(6~15) n - 6 9(15 +(n - 6) - n) ashr_10
+ */
+ .p2align 4
+LABEL(ashr_10):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $6, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $10, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 10(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_10_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_10_use)
+
+LABEL(nibble_ashr_10_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $10, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_10_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $10, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_10_use)
+
+ .p2align 4
+LABEL(nibble_ashr_10_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $10, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $5, %ecx
+ ja LABEL(nibble_ashr_10_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_11
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(5~15) n - 5 10(15 +(n - 5) - n) ashr_11
+ */
+ .p2align 4
+LABEL(ashr_11):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $5, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $11, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 11(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_11_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_11_use)
+
+LABEL(nibble_ashr_11_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $11, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_11_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $11, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_11_use)
+
+ .p2align 4
+LABEL(nibble_ashr_11_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $11, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $4, %ecx
+ ja LABEL(nibble_ashr_11_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_12
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(4~15) n - 4 11(15 +(n - 4) - n) ashr_12
+ */
+ .p2align 4
+LABEL(ashr_12):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $4, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $12, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 12(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_12_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_12_use)
+
+LABEL(nibble_ashr_12_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $12, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_12_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $12, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_12_use)
+
+ .p2align 4
+LABEL(nibble_ashr_12_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $12, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $3, %ecx
+ ja LABEL(nibble_ashr_12_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_13
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(3~15) n - 3 12(15 +(n - 3) - n) ashr_13
+ */
+ .p2align 4
+LABEL(ashr_13):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $3, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $13, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 13(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_13_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_13_use)
+
+LABEL(nibble_ashr_13_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $13, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_13_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $13, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_13_use)
+
+ .p2align 4
+LABEL(nibble_ashr_13_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $13, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $2, %ecx
+ ja LABEL(nibble_ashr_13_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_14
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(2~15) n - 2 13(15 +(n - 2) - n) ashr_14
+ */
+ .p2align 4
+LABEL(ashr_14):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $2, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $14, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 14(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_14_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_14_use)
+
+LABEL(nibble_ashr_14_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $14, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_14_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $14, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_14_use)
+
+ .p2align 4
+LABEL(nibble_ashr_14_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $14, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $1, %ecx
+ ja LABEL(nibble_ashr_14_restart_use)
+
+ jmp LABEL(nibble_ashr_exit_use)
+
+/*
+ * The following cases will be handled by ashr_15
+ * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
+ * n(1~15) n - 1 14(15 +(n - 1) - n) ashr_15
+ */
+ .p2align 4
+LABEL(ashr_15):
+ pxor %xmm0, %xmm0
+ movdqa (%rdi), %xmm2
+ movdqa (%rsi), %xmm1
+ pcmpeqb %xmm1, %xmm0
+ pslldq $1, %xmm2
+ TOLOWER (%xmm1, %xmm2)
+ pcmpeqb %xmm1, %xmm2
+ psubb %xmm0, %xmm2
+ pmovmskb %xmm2, %r9d
+ shr %cl, %edx
+ shr %cl, %r9d
+ sub %r9d, %edx
+ jnz LABEL(less32bytes)
+
+ movdqa (%rdi), %xmm3
+
+ UPDATE_STRNCMP_COUNTER
+
+ pxor %xmm0, %xmm0
+ mov $16, %rcx /* index for loads */
+ mov $15, %r9d /* byte position left over from less32bytes case */
+ /*
+ * Setup %r10 value allows us to detect crossing a page boundary.
+ * When %r10 goes positive we have crossed a page boundary and
+ * need to do a nibble.
+ */
+ lea 15(%rdi), %r10
+ and $0xfff, %r10 /* offset into 4K page */
+
+ sub $0x1000, %r10 /* subtract 4K pagesize */
+
+ mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
+
+ .p2align 4
+LABEL(loop_ashr_15_use):
+ add $16, %r10
+ jg LABEL(nibble_ashr_15_use)
+
+LABEL(nibble_ashr_15_restart_use):
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $15, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+
+ add $16, %rdx
+ add $16, %r10
+ jg LABEL(nibble_ashr_15_use)
+
+ movdqa (%rdi, %rdx), %xmm0
+ palignr $15, -16(%rdi, %rdx), %xmm0
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a, (%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ jbe LABEL(exit_use)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub $16, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add $16, %rdx
+ jmp LABEL(loop_ashr_15_use)
+
+ .p2align 4
+LABEL(nibble_ashr_15_use):
+ sub $0x1000, %r10
+ movdqa -16(%rdi, %rdx), %xmm0
+ psrldq $15, %xmm0
+ pcmpistri $0x3a,%xmm0, %xmm0
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ cmp %r11, %rcx
+ jae LABEL(nibble_ashr_exit_use)
+#endif
+ cmp $0, %ecx
+ ja LABEL(nibble_ashr_15_restart_use)
+
+LABEL(nibble_ashr_exit_use):
+#if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
+ pcmpistri $0x1a,(%rsi,%rdx), %xmm0
+#else
+ movdqa (%rsi,%rdx), %xmm1
+ TOLOWER (%xmm0, %xmm1)
+ pcmpistri $0x1a, %xmm1, %xmm0
+#endif
+ .p2align 4
+LABEL(exit_use):
+ jnc LABEL(strcmp_exitz)
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub %rcx, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ add %rcx, %rdx
+ lea -16(%rdi, %r9), %rdi
+ movzbl (%rdi, %rdx), %eax
+ movzbl (%rsi, %rdx), %edx
+ test %r8d, %r8d
+ jz LABEL(ret_use)
+ xchg %eax, %edx
+LABEL(ret_use):
+#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+ leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
+ movl (%rcx,%rdx,4), %edx
+ movl (%rcx,%rax,4), %eax
+#endif
+
+ sub %edx, %eax
+ ret
+
+LABEL(less32bytes):
+ lea (%rdi, %rax), %rdi /* locate the exact address for first operand(rdi) */
+ lea (%rsi, %rcx), %rsi /* locate the exact address for second operand(rsi) */
+ test %r8d, %r8d
+ jz LABEL(ret)
+ xchg %rsi, %rdi /* recover original order according to flag(%r8d) */
+
+ .p2align 4
+LABEL(ret):
+LABEL(less16bytes):
+ bsf %rdx, %rdx /* find and store bit index in %rdx */
+
+#if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
+ sub %rdx, %r11
+ jbe LABEL(strcmp_exitz)
+#endif
+ movzbl (%rsi, %rdx), %ecx
+ movzbl (%rdi, %rdx), %eax
+
+#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+ leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
+ movl (%rdx,%rcx,4), %ecx
+ movl (%rdx,%rax,4), %eax
+#endif
+
+ sub %ecx, %eax
+ ret
+
+LABEL(strcmp_exitz):
+ xor %eax, %eax
+ ret
+
+ .p2align 4
+ // XXX Same as code above
+LABEL(Byte0):
+ movzx (%rsi), %ecx
+ movzx (%rdi), %eax
+
+#if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+ leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
+ movl (%rdx,%rcx,4), %ecx
+ movl (%rdx,%rax,4), %eax
+#endif
+
+ sub %ecx, %eax
+ ret
+ cfi_endproc
+ .size STRCMP_SSE42, .-STRCMP_SSE42
+
+#undef UCLOW_reg
+#undef UCHIGH_reg
+#undef LCQWORD_reg
+#undef TOLOWER
+
+ /* Put all SSE 4.2 functions together. */
+ .section .rodata.SECTION,"a",@progbits
+ .p2align 3
+LABEL(unaligned_table):
+ .int LABEL(ashr_1) - LABEL(unaligned_table)
+ .int LABEL(ashr_2) - LABEL(unaligned_table)
+ .int LABEL(ashr_3) - LABEL(unaligned_table)
+ .int LABEL(ashr_4) - LABEL(unaligned_table)
+ .int LABEL(ashr_5) - LABEL(unaligned_table)
+ .int LABEL(ashr_6) - LABEL(unaligned_table)
+ .int LABEL(ashr_7) - LABEL(unaligned_table)
+ .int LABEL(ashr_8) - LABEL(unaligned_table)
+ .int LABEL(ashr_9) - LABEL(unaligned_table)
+ .int LABEL(ashr_10) - LABEL(unaligned_table)
+ .int LABEL(ashr_11) - LABEL(unaligned_table)
+ .int LABEL(ashr_12) - LABEL(unaligned_table)
+ .int LABEL(ashr_13) - LABEL(unaligned_table)
+ .int LABEL(ashr_14) - LABEL(unaligned_table)
+ .int LABEL(ashr_15) - LABEL(unaligned_table)
+ .int LABEL(ashr_0) - LABEL(unaligned_table)
+
+#undef LABEL
+#undef GLABEL
+#undef SECTION
/* strcmp with SSE4.2
- Copyright (C) 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 2009, 2010, 2011 Free Software Foundation, Inc.
Contributed by Intel Corporation.
This file is part of the GNU C Library.
/* calculate left number to compare */ \
lea -16(%rcx, %r11), %r9; \
cmp %r9, %r11; \
- jb LABEL(strcmp_exitz_sse4_2); \
+ jb LABEL(strcmp_exitz); \
test %r9, %r9; \
- je LABEL(strcmp_exitz_sse4_2); \
+ je LABEL(strcmp_exitz); \
mov %r9, %r11
# define STRCMP_SSE42 __strncmp_sse42
# define UPDATE_STRNCMP_COUNTER
+# define STRCMP_AVX __strcasecmp_l_avx
# define STRCMP_SSE42 __strcasecmp_l_sse42
# define STRCMP_SSSE3 __strcasecmp_l_ssse3
# define STRCMP_SSE2 __strcasecmp_l_sse2
/* calculate left number to compare */ \
lea -16(%rcx, %r11), %r9; \
cmp %r9, %r11; \
- jb LABEL(strcmp_exitz_sse4_2); \
+ jb LABEL(strcmp_exitz); \
test %r9, %r9; \
- je LABEL(strcmp_exitz_sse4_2); \
+ je LABEL(strcmp_exitz); \
mov %r9, %r11
+# define STRCMP_AVX __strncasecmp_l_avx
# define STRCMP_SSE42 __strncasecmp_l_sse42
# define STRCMP_SSSE3 __strncasecmp_l_ssse3
# define STRCMP_SSE2 __strncasecmp_l_sse2
# endif
#endif
-#ifndef LABEL
-# define LABEL(l) L(l)
-#endif
-
/* Define multiple versions only for the definition in libc. Don't
define multiple versions for strncmp in static library since we
need strncmp before the initialization happened. */
jne 1f
call __init_cpu_features
1:
+# ifdef HAVE_AVX_SUPPORT
+ leaq __strcasecmp_avx(%rip), %rax
+ testl $bit_AVX, __cpu_features+CPUID_OFFSET+index_AVX(%rip)
+ jnz 2f
+# endif
leaq __strcasecmp_sse42(%rip), %rax
testl $bit_SSE4_2, __cpu_features+CPUID_OFFSET+index_SSE4_2(%rip)
jnz 2f
jne 1f
call __init_cpu_features
1:
+# ifdef HAVE_AVX_SUPPORT
+ leaq __strncasecmp_avx(%rip), %rax
+ testl $bit_AVX, __cpu_features+CPUID_OFFSET+index_AVX(%rip)
+ jnz 2f
+# endif
leaq __strncasecmp_sse42(%rip), %rax
testl $bit_SSE4_2, __cpu_features+CPUID_OFFSET+index_SSE4_2(%rip)
jnz 2f
weak_alias (__strncasecmp, strncasecmp)
# endif
-/* We use 0x1a:
- _SIDD_SBYTE_OPS
- | _SIDD_CMP_EQUAL_EACH
- | _SIDD_NEGATIVE_POLARITY
- | _SIDD_LEAST_SIGNIFICANT
- on pcmpistri to find out if two 16byte data elements are the same
- and the offset of the first different byte. There are 4 cases:
-
- 1. Both 16byte data elements are valid and identical.
- 2. Both 16byte data elements have EOS and identical.
- 3. Both 16byte data elements are valid and they differ at offset X.
- 4. At least one 16byte data element has EOS at offset X. Two 16byte
- data elements must differ at or before offset X.
-
- Here is the table of ECX, CFlag, ZFlag and SFlag for 4 cases:
-
- case ECX CFlag ZFlag SFlag
- 1 16 0 0 0
- 2 16 0 1 1
- 3 X 1 0 0
- 4 0 <= X 1 0/1 0/1
-
- We exit from the loop for cases 2, 3 and 4 with jbe which branches
- when either CFlag or ZFlag is 1. If CFlag == 0, we return 0 for
- case 2. */
-
- /* Put all SSE 4.2 functions together. */
- .section .text.sse4.2,"ax",@progbits
- .align 16
- .type STRCMP_SSE42, @function
-# ifdef USE_AS_STRCASECMP_L
-ENTRY (__strcasecmp_sse42)
- movq __libc_tsd_LOCALE@gottpoff(%rip),%rax
- movq %fs:(%rax),%rdx
-
- // XXX 5 byte should be before the function
- /* 5-byte NOP. */
- .byte 0x0f,0x1f,0x44,0x00,0x00
-END (__strcasecmp_sse42)
- /* FALLTHROUGH to strcasecmp_l. */
-# endif
-# ifdef USE_AS_STRNCASECMP_L
-ENTRY (__strncasecmp_sse42)
- movq __libc_tsd_LOCALE@gottpoff(%rip),%rax
- movq %fs:(%rax),%rcx
-
- // XXX 5 byte should be before the function
- /* 5-byte NOP. */
- .byte 0x0f,0x1f,0x44,0x00,0x00
-END (__strncasecmp_sse42)
- /* FALLTHROUGH to strncasecmp_l. */
-# endif
+# undef LABEL
+# define LABEL(l) .L##l##_sse42
+# define GLABEL(l) l##_sse42
+# define SECTION sse4.2
+# include "strcmp-sse42.S"
-STRCMP_SSE42:
- cfi_startproc
- CALL_MCOUNT
-/*
- * This implementation uses SSE to compare up to 16 bytes at a time.
- */
-# ifdef USE_AS_STRCASECMP_L
- /* We have to fall back on the C implementation for locales
- with encodings not matching ASCII for single bytes. */
-# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
- movq LOCALE_T___LOCALES+LC_CTYPE*8(%rdx), %rax
-# else
- movq (%rdx), %rax
+# ifdef HAVE_AVX_SUPPORT
+# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
+# define LABEL(l) .L##l##_avx
+# define GLABEL(l) l##_avx
+# define USE_AVX 1
+# undef STRCMP_SSE42
+# define STRCMP_SSE42 STRCMP_AVX
+# define SECTION avx
+# include "strcmp-sse42.S"
# endif
- testl $0, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
- jne __strcasecmp_l_nonascii
-# endif
-# ifdef USE_AS_STRNCASECMP_L
- /* We have to fall back on the C implementation for locales
- with encodings not matching ASCII for single bytes. */
-# if LOCALE_T___LOCALES != 0 || LC_CTYPE != 0
- movq LOCALE_T___LOCALES+LC_CTYPE*8(%rcx), %rax
-# else
- movq (%rcx), %rax
-# endif
- testl $0, LOCALE_DATA_VALUES+_NL_CTYPE_NONASCII_CASE*SIZEOF_VALUES(%rax)
- jne __strncasecmp_l_nonascii
-# endif
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- test %rdx, %rdx
- je LABEL(strcmp_exitz_sse4_2)
- cmp $1, %rdx
- je LABEL(Byte0_sse4_2)
- mov %rdx, %r11
-# endif
- mov %esi, %ecx
- mov %edi, %eax
-/* Use 64bit AND here to avoid long NOP padding. */
- and $0x3f, %rcx /* rsi alignment in cache line */
- and $0x3f, %rax /* rdi alignment in cache line */
-# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
- .section .rodata.cst16,"aM",@progbits,16
- .align 16
-.Lbelowupper_sse4:
- .quad 0x4040404040404040
- .quad 0x4040404040404040
-.Ltopupper_sse4:
- .quad 0x5b5b5b5b5b5b5b5b
- .quad 0x5b5b5b5b5b5b5b5b
-.Ltouppermask_sse4:
- .quad 0x2020202020202020
- .quad 0x2020202020202020
- .previous
- movdqa .Lbelowupper_sse4(%rip), %xmm4
-# define UCLOW_reg %xmm4
- movdqa .Ltopupper_sse4(%rip), %xmm5
-# define UCHIGH_reg %xmm5
- movdqa .Ltouppermask_sse4(%rip), %xmm6
-# define LCQWORD_reg %xmm6
-# endif
- cmp $0x30, %ecx
- ja LABEL(crosscache_sse4_2)/* rsi: 16-byte load will cross cache line */
- cmp $0x30, %eax
- ja LABEL(crosscache_sse4_2)/* rdi: 16-byte load will cross cache line */
- movdqu (%rdi), %xmm1
- movdqu (%rsi), %xmm2
-# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
-# define TOLOWER(reg1, reg2) \
- movdqa reg1, %xmm7; \
- movdqa UCHIGH_reg, %xmm8; \
- movdqa reg2, %xmm9; \
- movdqa UCHIGH_reg, %xmm10; \
- pcmpgtb UCLOW_reg, %xmm7; \
- pcmpgtb reg1, %xmm8; \
- pcmpgtb UCLOW_reg, %xmm9; \
- pcmpgtb reg2, %xmm10; \
- pand %xmm8, %xmm7; \
- pand %xmm10, %xmm9; \
- pand LCQWORD_reg, %xmm7; \
- pand LCQWORD_reg, %xmm9; \
- por %xmm7, reg1; \
- por %xmm9, reg2
- TOLOWER (%xmm1, %xmm2)
-# else
-# define TOLOWER(reg1, reg2)
-# endif
- pxor %xmm0, %xmm0 /* clear %xmm0 for null char checks */
- pcmpeqb %xmm1, %xmm0 /* Any null chars? */
- pcmpeqb %xmm2, %xmm1 /* compare first 16 bytes for equality */
- psubb %xmm0, %xmm1 /* packed sub of comparison results*/
- pmovmskb %xmm1, %edx
- sub $0xffff, %edx /* if first 16 bytes are same, edx == 0xffff */
- jnz LABEL(less16bytes_sse4_2)/* If not, find different value or null char */
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)/* finish comparision */
-# endif
- add $16, %rsi /* prepare to search next 16 bytes */
- add $16, %rdi /* prepare to search next 16 bytes */
-
- /*
- * Determine source and destination string offsets from 16-byte alignment.
- * Use relative offset difference between the two to determine which case
- * below to use.
- */
- .p2align 4
-LABEL(crosscache_sse4_2):
- and $0xfffffffffffffff0, %rsi /* force %rsi is 16 byte aligned */
- and $0xfffffffffffffff0, %rdi /* force %rdi is 16 byte aligned */
- mov $0xffff, %edx /* for equivalent offset */
- xor %r8d, %r8d
- and $0xf, %ecx /* offset of rsi */
- and $0xf, %eax /* offset of rdi */
- cmp %eax, %ecx
- je LABEL(ashr_0_sse4_2) /* rsi and rdi relative offset same */
- ja LABEL(bigger_sse4_2)
- mov %edx, %r8d /* r8d is offset flag for exit tail */
- xchg %ecx, %eax
- xchg %rsi, %rdi
-LABEL(bigger_sse4_2):
- lea 15(%rax), %r9
- sub %rcx, %r9
- lea LABEL(unaligned_table_sse4_2)(%rip), %r10
- movslq (%r10, %r9,4), %r9
- lea (%r10, %r9), %r10
- jmp *%r10 /* jump to corresponding case */
-
-/*
- * The following cases will be handled by ashr_0
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(0~15) n(0~15) 15(15+ n-n) ashr_0
- */
- .p2align 4
-LABEL(ashr_0_sse4_2):
-
- movdqa (%rsi), %xmm1
- pxor %xmm0, %xmm0 /* clear %xmm0 for null char check */
- pcmpeqb %xmm1, %xmm0 /* Any null chars? */
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpeqb (%rdi), %xmm1 /* compare 16 bytes for equality */
-# else
- movdqa (%rdi), %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm2, %xmm1 /* compare 16 bytes for equality */
-# endif
- psubb %xmm0, %xmm1 /* packed sub of comparison results*/
- pmovmskb %xmm1, %r9d
- shr %cl, %edx /* adjust 0xffff for offset */
- shr %cl, %r9d /* adjust for 16-byte offset */
- sub %r9d, %edx
- /*
- * edx must be the same with r9d if in left byte (16-rcx) is equal to
- * the start from (16-rax) and no null char was seen.
- */
- jne LABEL(less32bytes_sse4_2) /* mismatch or null char */
- UPDATE_STRNCMP_COUNTER
- mov $16, %rcx
- mov $16, %r9
- pxor %xmm0, %xmm0 /* clear xmm0, may have changed above */
-
- /*
- * Now both strings are aligned at 16-byte boundary. Loop over strings
- * checking 32-bytes per iteration.
- */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
- .p2align 4
-LABEL(ashr_0_use_sse4_2):
- movdqa (%rdi,%rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- lea 16(%rdx), %rdx
- jbe LABEL(ashr_0_use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- movdqa (%rdi,%rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- lea 16(%rdx), %rdx
- jbe LABEL(ashr_0_use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- jmp LABEL(ashr_0_use_sse4_2)
-
-
- .p2align 4
-LABEL(ashr_0_use_sse4_2_exit):
- jnc LABEL(strcmp_exitz_sse4_2)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub %rcx, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- lea -16(%rdx, %rcx), %rcx
- movzbl (%rdi, %rcx), %eax
- movzbl (%rsi, %rcx), %edx
-# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
- leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
- movl (%rcx,%rax,4), %eax
- movl (%rcx,%rdx,4), %edx
-# endif
- sub %edx, %eax
- ret
-
-
-
-/*
- * The following cases will be handled by ashr_1
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(15) n -15 0(15 +(n-15) - n) ashr_1
- */
- .p2align 4
-LABEL(ashr_1_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0 /* Any null chars? */
- pslldq $15, %xmm2 /* shift first string to align with second */
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2 /* compare 16 bytes for equality */
- psubb %xmm0, %xmm2 /* packed sub of comparison results*/
- pmovmskb %xmm2, %r9d
- shr %cl, %edx /* adjust 0xffff for offset */
- shr %cl, %r9d /* adjust for 16-byte offset */
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)/* mismatch or null char seen */
- movdqa (%rdi), %xmm3
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads*/
- mov $1, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 1(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_1_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_1_use_sse4_2)
-
-LABEL(nibble_ashr_1_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $1, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_1_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $1, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_1_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_1_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $1, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $14, %ecx
- ja LABEL(nibble_ashr_1_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_2
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(14~15) n -14 1(15 +(n-14) - n) ashr_2
- */
- .p2align 4
-LABEL(ashr_2_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $14, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $2, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 2(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_2_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_2_use_sse4_2)
-
-LABEL(nibble_ashr_2_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $2, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_2_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $2, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_2_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_2_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $2, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $13, %ecx
- ja LABEL(nibble_ashr_2_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_3
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(13~15) n -13 2(15 +(n-13) - n) ashr_3
- */
- .p2align 4
-LABEL(ashr_3_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $13, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $3, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 3(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
-LABEL(loop_ashr_3_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_3_use_sse4_2)
-
-LABEL(nibble_ashr_3_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $3, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_3_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $3, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_3_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_3_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $3, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $12, %ecx
- ja LABEL(nibble_ashr_3_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_4
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(12~15) n -12 3(15 +(n-12) - n) ashr_4
- */
- .p2align 4
-LABEL(ashr_4_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $12, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $4, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 4(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_4_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_4_use_sse4_2)
-
-LABEL(nibble_ashr_4_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $4, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_4_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $4, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_4_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_4_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $4, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $11, %ecx
- ja LABEL(nibble_ashr_4_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_5
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(11~15) n - 11 4(15 +(n-11) - n) ashr_5
- */
- .p2align 4
-LABEL(ashr_5_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $11, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $5, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 5(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_5_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_5_use_sse4_2)
-
-LABEL(nibble_ashr_5_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $5, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_5_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
-
- palignr $5, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_5_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_5_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $5, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $10, %ecx
- ja LABEL(nibble_ashr_5_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_6
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(10~15) n - 10 5(15 +(n-10) - n) ashr_6
- */
- .p2align 4
-LABEL(ashr_6_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $10, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $6, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 6(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_6_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_6_use_sse4_2)
-
-LABEL(nibble_ashr_6_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $6, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_6_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $6, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_6_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_6_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $6, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $9, %ecx
- ja LABEL(nibble_ashr_6_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_7
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(9~15) n - 9 6(15 +(n - 9) - n) ashr_7
- */
- .p2align 4
-LABEL(ashr_7_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $9, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $7, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 7(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_7_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_7_use_sse4_2)
-
-LABEL(nibble_ashr_7_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $7, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_7_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $7, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_7_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_7_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $7, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $8, %ecx
- ja LABEL(nibble_ashr_7_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_8
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(8~15) n - 8 7(15 +(n - 8) - n) ashr_8
- */
- .p2align 4
-LABEL(ashr_8_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $8, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $8, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 8(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_8_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_8_use_sse4_2)
-
-LABEL(nibble_ashr_8_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $8, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_8_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $8, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_8_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_8_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $8, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $7, %ecx
- ja LABEL(nibble_ashr_8_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_9
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(7~15) n - 7 8(15 +(n - 7) - n) ashr_9
- */
- .p2align 4
-LABEL(ashr_9_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $7, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $9, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 9(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_9_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_9_use_sse4_2)
-
-LABEL(nibble_ashr_9_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
-
- palignr $9, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_9_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $9, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_9_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_9_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $9, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $6, %ecx
- ja LABEL(nibble_ashr_9_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_10
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(6~15) n - 6 9(15 +(n - 6) - n) ashr_10
- */
- .p2align 4
-LABEL(ashr_10_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $6, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $10, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 10(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_10_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_10_use_sse4_2)
-
-LABEL(nibble_ashr_10_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $10, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_10_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $10, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_10_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_10_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $10, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $5, %ecx
- ja LABEL(nibble_ashr_10_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_11
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(5~15) n - 5 10(15 +(n - 5) - n) ashr_11
- */
- .p2align 4
-LABEL(ashr_11_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $5, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $11, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 11(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_11_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_11_use_sse4_2)
-
-LABEL(nibble_ashr_11_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $11, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_11_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $11, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_11_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_11_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $11, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $4, %ecx
- ja LABEL(nibble_ashr_11_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_12
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(4~15) n - 4 11(15 +(n - 4) - n) ashr_12
- */
- .p2align 4
-LABEL(ashr_12_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $4, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $12, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 12(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_12_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_12_use_sse4_2)
-
-LABEL(nibble_ashr_12_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $12, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_12_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $12, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_12_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_12_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $12, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $3, %ecx
- ja LABEL(nibble_ashr_12_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_13
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(3~15) n - 3 12(15 +(n - 3) - n) ashr_13
- */
- .p2align 4
-LABEL(ashr_13_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $3, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $13, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 13(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
-
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_13_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_13_use_sse4_2)
-
-LABEL(nibble_ashr_13_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $13, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_13_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $13, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_13_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_13_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $13, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $2, %ecx
- ja LABEL(nibble_ashr_13_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_14
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(2~15) n - 2 13(15 +(n - 2) - n) ashr_14
- */
- .p2align 4
-LABEL(ashr_14_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $2, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $14, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 14(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
- sub $0x1000, %r10 /* subtract 4K pagesize */
-
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_14_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_14_use_sse4_2)
-
-LABEL(nibble_ashr_14_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $14, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_14_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $14, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_14_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_14_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $14, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $1, %ecx
- ja LABEL(nibble_ashr_14_use_sse4_2_restart)
-
- jmp LABEL(nibble_ashr_use_sse4_2_exit)
-
-/*
- * The following cases will be handled by ashr_15
- * rcx(offset of rsi) rax(offset of rdi) relative offset corresponding case
- * n(1~15) n - 1 14(15 +(n - 1) - n) ashr_15
- */
- .p2align 4
-LABEL(ashr_15_sse4_2):
- pxor %xmm0, %xmm0
- movdqa (%rdi), %xmm2
- movdqa (%rsi), %xmm1
- pcmpeqb %xmm1, %xmm0
- pslldq $1, %xmm2
- TOLOWER (%xmm1, %xmm2)
- pcmpeqb %xmm1, %xmm2
- psubb %xmm0, %xmm2
- pmovmskb %xmm2, %r9d
- shr %cl, %edx
- shr %cl, %r9d
- sub %r9d, %edx
- jnz LABEL(less32bytes_sse4_2)
-
- movdqa (%rdi), %xmm3
-
- UPDATE_STRNCMP_COUNTER
-
- pxor %xmm0, %xmm0
- mov $16, %rcx /* index for loads */
- mov $15, %r9d /* byte position left over from less32bytes case */
- /*
- * Setup %r10 value allows us to detect crossing a page boundary.
- * When %r10 goes positive we have crossed a page boundary and
- * need to do a nibble.
- */
- lea 15(%rdi), %r10
- and $0xfff, %r10 /* offset into 4K page */
-
- sub $0x1000, %r10 /* subtract 4K pagesize */
-
- mov %rcx, %rdx /* only for offset of sse4 instruction loop*/
-
- .p2align 4
-LABEL(loop_ashr_15_use_sse4_2):
- add $16, %r10
- jg LABEL(nibble_ashr_15_use_sse4_2)
-
-LABEL(nibble_ashr_15_use_sse4_2_restart):
- movdqa (%rdi, %rdx), %xmm0
- palignr $15, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
-
- add $16, %rdx
- add $16, %r10
- jg LABEL(nibble_ashr_15_use_sse4_2)
-
- movdqa (%rdi, %rdx), %xmm0
- palignr $15, -16(%rdi, %rdx), %xmm0
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a, (%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- jbe LABEL(use_sse4_2_exit)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub $16, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add $16, %rdx
- jmp LABEL(loop_ashr_15_use_sse4_2)
-
- .p2align 4
-LABEL(nibble_ashr_15_use_sse4_2):
- sub $0x1000, %r10
- movdqa -16(%rdi, %rdx), %xmm0
- psrldq $15, %xmm0
- pcmpistri $0x3a,%xmm0, %xmm0
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- cmp %r11, %rcx
- jae LABEL(nibble_ashr_use_sse4_2_exit)
-# endif
- cmp $0, %ecx
- ja LABEL(nibble_ashr_15_use_sse4_2_restart)
-
-LABEL(nibble_ashr_use_sse4_2_exit):
-# if !defined USE_AS_STRCASECMP_L && !defined USE_AS_STRNCASECMP_L
- pcmpistri $0x1a,(%rsi,%rdx), %xmm0
-# else
- movdqa (%rsi,%rdx), %xmm1
- TOLOWER (%xmm0, %xmm1)
- pcmpistri $0x1a, %xmm1, %xmm0
-# endif
- .p2align 4
-LABEL(use_sse4_2_exit):
- jnc LABEL(strcmp_exitz_sse4_2)
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub %rcx, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- add %rcx, %rdx
- lea -16(%rdi, %r9), %rdi
- movzbl (%rdi, %rdx), %eax
- movzbl (%rsi, %rdx), %edx
- test %r8d, %r8d
- jz LABEL(use_sse4_2_ret_sse4_2)
- xchg %eax, %edx
-LABEL(use_sse4_2_ret_sse4_2):
-# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
- leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rcx
- movl (%rcx,%rdx,4), %edx
- movl (%rcx,%rax,4), %eax
-# endif
-
- sub %edx, %eax
- ret
-
-LABEL(less32bytes_sse4_2):
- lea (%rdi, %rax), %rdi /* locate the exact address for first operand(rdi) */
- lea (%rsi, %rcx), %rsi /* locate the exact address for second operand(rsi) */
- test %r8d, %r8d
- jz LABEL(ret_sse4_2)
- xchg %rsi, %rdi /* recover original order according to flag(%r8d) */
-
- .p2align 4
-LABEL(ret_sse4_2):
-LABEL(less16bytes_sse4_2):
- bsf %rdx, %rdx /* find and store bit index in %rdx */
-
-# if defined USE_AS_STRNCMP || defined USE_AS_STRNCASECMP_L
- sub %rdx, %r11
- jbe LABEL(strcmp_exitz_sse4_2)
-# endif
- movzbl (%rsi, %rdx), %ecx
- movzbl (%rdi, %rdx), %eax
-
-# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
- leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
- movl (%rdx,%rcx,4), %ecx
- movl (%rdx,%rax,4), %eax
-# endif
-
- sub %ecx, %eax
- ret
-
-LABEL(strcmp_exitz_sse4_2):
- xor %eax, %eax
- ret
-
- .p2align 4
- // XXX Same as code above
-LABEL(Byte0_sse4_2):
- movzx (%rsi), %ecx
- movzx (%rdi), %eax
-
-# if defined USE_AS_STRCASECMP_L || defined USE_AS_STRNCASECMP_L
- leaq _nl_C_LC_CTYPE_tolower+128*4(%rip), %rdx
- movl (%rdx,%rcx,4), %ecx
- movl (%rdx,%rax,4), %eax
-# endif
-
- sub %ecx, %eax
- ret
- cfi_endproc
- .size STRCMP_SSE42, .-STRCMP_SSE42
-
-# undef UCLOW_reg
-# undef UCHIGH_reg
-# undef LCQWORD_reg
-# undef TOLOWER
-
- /* Put all SSE 4.2 functions together. */
- .section .rodata.sse4.2,"a",@progbits
- .p2align 3
-LABEL(unaligned_table_sse4_2):
- .int LABEL(ashr_1_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_2_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_3_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_4_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_5_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_6_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_7_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_8_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_9_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_10_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_11_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_12_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_13_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_14_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_15_sse4_2) - LABEL(unaligned_table_sse4_2)
- .int LABEL(ashr_0_sse4_2) - LABEL(unaligned_table_sse4_2)
# undef ENTRY
projects / platform / upstream / glibc.git / commitdiff