| /* strcmp with SSSE3 |
| Copyright (C) 2010 Free Software Foundation, Inc. |
| Contributed by Intel Corporation. |
| This file is part of the GNU C Library. |
| |
| The GNU C Library is free software; you can redistribute it and/or |
| modify it under the terms of the GNU Lesser General Public |
| License as published by the Free Software Foundation; either |
| version 2.1 of the License, or (at your option) any later version. |
| |
| The GNU C Library is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| Lesser General Public License for more details. |
| |
| You should have received a copy of the GNU Lesser General Public |
| License along with the GNU C Library; if not, write to the Free |
| Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA |
| 02111-1307 USA. */ |
| |
| #ifndef NOT_IN_libc |
| |
| #include <sysdep.h> |
| #include "asm-syntax.h" |
| |
| #define CFI_PUSH(REG) \ |
| cfi_adjust_cfa_offset (4); \ |
| cfi_rel_offset (REG, 0) |
| |
| #define CFI_POP(REG) \ |
| cfi_adjust_cfa_offset (-4); \ |
| cfi_restore (REG) |
| |
| #define PUSH(REG) pushl REG; CFI_PUSH (REG) |
| #define POP(REG) popl REG; CFI_POP (REG) |
| |
| #ifndef USE_AS_STRNCMP |
| # ifndef STRCMP |
| # define STRCMP __strcmp_ssse3 |
| # endif |
| # define STR1 4 |
| # define STR2 STR1+4 |
| # define RETURN ret; .p2align 4 |
| # define UPDATE_STRNCMP_COUNTER |
| #else |
| # ifndef STRCMP |
| # define STRCMP __strncmp_ssse3 |
| # endif |
| # define STR1 8 |
| # define STR2 STR1+4 |
| # define CNT STR2+4 |
| # define RETURN POP (%ebp); ret; .p2align 4; CFI_PUSH (%ebp) |
| # define UPDATE_STRNCMP_COUNTER \ |
| /* calculate left number to compare */ \ |
| mov $16, %esi; \ |
| sub %ecx, %esi; \ |
| cmp %esi, %ebp; \ |
| jbe L(more8byteseq); \ |
| sub %esi, %ebp |
| #endif |
| |
| .section .text.ssse3,"ax",@progbits |
| ENTRY (STRCMP) |
| #ifdef USE_AS_STRNCMP |
| PUSH (%ebp) |
| #endif |
| movl STR1(%esp), %edx |
| movl STR2(%esp), %eax |
| #ifdef USE_AS_STRNCMP |
| movl CNT(%esp), %ebp |
| cmp $16, %ebp |
| jb L(less16bytes_sncmp) |
| #else |
| movzbl (%eax), %ecx |
| cmpb %cl, (%edx) |
| jne L(neq) |
| cmpl $0, %ecx |
| je L(eq) |
| |
| movzbl 1(%eax), %ecx |
| cmpb %cl, 1(%edx) |
| jne L(neq) |
| cmpl $0, %ecx |
| je L(eq) |
| |
| movzbl 2(%eax), %ecx |
| cmpb %cl, 2(%edx) |
| jne L(neq) |
| cmpl $0, %ecx |
| je L(eq) |
| |
| movzbl 3(%eax), %ecx |
| cmpb %cl, 3(%edx) |
| jne L(neq) |
| cmpl $0, %ecx |
| je L(eq) |
| |
| movzbl 4(%eax), %ecx |
| cmpb %cl, 4(%edx) |
| jne L(neq) |
| cmpl $0, %ecx |
| je L(eq) |
| |
| movzbl 5(%eax), %ecx |
| cmpb %cl, 5(%edx) |
| jne L(neq) |
| cmpl $0, %ecx |
| je L(eq) |
| |
| movzbl 6(%eax), %ecx |
| cmpb %cl, 6(%edx) |
| jne L(neq) |
| cmpl $0, %ecx |
| je L(eq) |
| |
| movzbl 7(%eax), %ecx |
| cmpb %cl, 7(%edx) |
| jne L(neq) |
| cmpl $0, %ecx |
| je L(eq) |
| |
| add $8, %edx |
| add $8, %eax |
| #endif |
| movl %edx, %ecx |
| and $0xfff, %ecx |
| cmp $0xff0, %ecx |
| ja L(crosspage) |
| mov %eax, %ecx |
| and $0xfff, %ecx |
| cmp $0xff0, %ecx |
| ja L(crosspage) |
| pxor %xmm0, %xmm0 |
| movlpd (%eax), %xmm1 |
| movlpd (%edx), %xmm2 |
| movhpd 8(%eax), %xmm1 |
| movhpd 8(%edx), %xmm2 |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %ecx |
| sub $0xffff, %ecx |
| jnz L(less16bytes) |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(eq) |
| #endif |
| add $16, %eax |
| add $16, %edx |
| |
| L(crosspage): |
| |
| PUSH (%ebx) |
| PUSH (%edi) |
| PUSH (%esi) |
| #ifdef USE_AS_STRNCMP |
| cfi_remember_state |
| #endif |
| |
| movl %edx, %edi |
| movl %eax, %ecx |
| and $0xf, %ecx |
| and $0xf, %edi |
| xor %ecx, %eax |
| xor %edi, %edx |
| xor %ebx, %ebx |
| cmp %edi, %ecx |
| je L(ashr_0) |
| ja L(bigger) |
| or $0x20, %ebx |
| xchg %edx, %eax |
| xchg %ecx, %edi |
| L(bigger): |
| lea 15(%edi), %edi |
| sub %ecx, %edi |
| cmp $8, %edi |
| jle L(ashr_less_8) |
| cmp $14, %edi |
| je L(ashr_15) |
| cmp $13, %edi |
| je L(ashr_14) |
| cmp $12, %edi |
| je L(ashr_13) |
| cmp $11, %edi |
| je L(ashr_12) |
| cmp $10, %edi |
| je L(ashr_11) |
| cmp $9, %edi |
| je L(ashr_10) |
| L(ashr_less_8): |
| je L(ashr_9) |
| cmp $7, %edi |
| je L(ashr_8) |
| cmp $6, %edi |
| je L(ashr_7) |
| cmp $5, %edi |
| je L(ashr_6) |
| cmp $4, %edi |
| je L(ashr_5) |
| cmp $3, %edi |
| je L(ashr_4) |
| cmp $2, %edi |
| je L(ashr_3) |
| cmp $1, %edi |
| je L(ashr_2) |
| cmp $0, %edi |
| je L(ashr_1) |
| |
| /* |
| * The following cases will be handled by ashr_0 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(0~15) n(0~15) 15(15+ n-n) ashr_0 |
| */ |
| .p2align 4 |
| L(ashr_0): |
| mov $0xffff, %esi |
| movdqa (%eax), %xmm1 |
| pxor %xmm0, %xmm0 |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb (%edx), %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| mov %ecx, %edi |
| jne L(less32bytes) |
| UPDATE_STRNCMP_COUNTER |
| mov $0x10, %ebx |
| mov $0x10, %ecx |
| pxor %xmm0, %xmm0 |
| .p2align 4 |
| L(loop_ashr_0): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| jmp L(loop_ashr_0) |
| |
| /* |
| * The following cases will be handled by ashr_1 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(15) n -15 0(15 +(n-15) - n) ashr_1 |
| */ |
| .p2align 4 |
| L(ashr_1): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $15, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -15(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $1, %ebx |
| lea 1(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_1): |
| add $16, %edi |
| jg L(nibble_ashr_1) |
| |
| L(gobble_ashr_1): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $1, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_1) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $1, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_1) |
| |
| .p2align 4 |
| L(nibble_ashr_1): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xfffe, %esi |
| jnz L(ashr_1_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $15, %ebp |
| jbe L(ashr_1_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_1) |
| |
| .p2align 4 |
| L(ashr_1_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $1, %xmm0 |
| psrldq $1, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_2 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(14~15) n -14 1(15 +(n-14) - n) ashr_2 |
| */ |
| .p2align 4 |
| L(ashr_2): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $14, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -14(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $2, %ebx |
| lea 2(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_2): |
| add $16, %edi |
| jg L(nibble_ashr_2) |
| |
| L(gobble_ashr_2): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $2, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_2) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $2, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_2) |
| |
| .p2align 4 |
| L(nibble_ashr_2): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xfffc, %esi |
| jnz L(ashr_2_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $14, %ebp |
| jbe L(ashr_2_exittail) |
| #endif |
| |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_2) |
| |
| .p2align 4 |
| L(ashr_2_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $2, %xmm0 |
| psrldq $2, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_3 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(13~15) n -13 2(15 +(n-13) - n) ashr_3 |
| */ |
| .p2align 4 |
| L(ashr_3): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $13, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -13(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $3, %ebx |
| lea 3(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_3): |
| add $16, %edi |
| jg L(nibble_ashr_3) |
| |
| L(gobble_ashr_3): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $3, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_3) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $3, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_3) |
| |
| .p2align 4 |
| L(nibble_ashr_3): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xfff8, %esi |
| jnz L(ashr_3_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $13, %ebp |
| jbe L(ashr_3_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_3) |
| |
| .p2align 4 |
| L(ashr_3_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $3, %xmm0 |
| psrldq $3, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_4 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(12~15) n -12 3(15 +(n-12) - n) ashr_4 |
| */ |
| .p2align 4 |
| L(ashr_4): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $12, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -12(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $4, %ebx |
| lea 4(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_4): |
| add $16, %edi |
| jg L(nibble_ashr_4) |
| |
| L(gobble_ashr_4): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $4, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_4) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $4, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_4) |
| |
| .p2align 4 |
| L(nibble_ashr_4): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xfff0, %esi |
| jnz L(ashr_4_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $12, %ebp |
| jbe L(ashr_4_exittail) |
| #endif |
| |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_4) |
| |
| .p2align 4 |
| L(ashr_4_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $4, %xmm0 |
| psrldq $4, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_5 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(11~15) n -11 4(15 +(n-11) - n) ashr_5 |
| */ |
| .p2align 4 |
| L(ashr_5): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $11, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -11(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $5, %ebx |
| lea 5(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_5): |
| add $16, %edi |
| jg L(nibble_ashr_5) |
| |
| L(gobble_ashr_5): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $5, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_5) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $5, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_5) |
| |
| .p2align 4 |
| L(nibble_ashr_5): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xffe0, %esi |
| jnz L(ashr_5_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $11, %ebp |
| jbe L(ashr_5_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_5) |
| |
| .p2align 4 |
| L(ashr_5_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $5, %xmm0 |
| psrldq $5, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_6 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(10~15) n -10 5(15 +(n-10) - n) ashr_6 |
| */ |
| |
| .p2align 4 |
| L(ashr_6): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $10, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -10(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $6, %ebx |
| lea 6(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_6): |
| add $16, %edi |
| jg L(nibble_ashr_6) |
| |
| L(gobble_ashr_6): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $6, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_6) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $6, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_6) |
| |
| .p2align 4 |
| L(nibble_ashr_6): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xffc0, %esi |
| jnz L(ashr_6_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $10, %ebp |
| jbe L(ashr_6_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_6) |
| |
| .p2align 4 |
| L(ashr_6_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $6, %xmm0 |
| psrldq $6, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_7 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(9~15) n - 9 6(15 +(n-9) - n) ashr_7 |
| */ |
| |
| .p2align 4 |
| L(ashr_7): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $9, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -9(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $7, %ebx |
| lea 8(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_7): |
| add $16, %edi |
| jg L(nibble_ashr_7) |
| |
| L(gobble_ashr_7): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $7, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_7) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $7, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_7) |
| |
| .p2align 4 |
| L(nibble_ashr_7): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xff80, %esi |
| jnz L(ashr_7_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $9, %ebp |
| jbe L(ashr_7_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_7) |
| |
| .p2align 4 |
| L(ashr_7_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $7, %xmm0 |
| psrldq $7, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_8 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(8~15) n - 8 7(15 +(n-8) - n) ashr_8 |
| */ |
| .p2align 4 |
| L(ashr_8): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $8, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -8(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $8, %ebx |
| lea 8(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_8): |
| add $16, %edi |
| jg L(nibble_ashr_8) |
| |
| L(gobble_ashr_8): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $8, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_8) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $8, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_8) |
| |
| .p2align 4 |
| L(nibble_ashr_8): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xff00, %esi |
| jnz L(ashr_8_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $8, %ebp |
| jbe L(ashr_8_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_8) |
| |
| .p2align 4 |
| L(ashr_8_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $8, %xmm0 |
| psrldq $8, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_9 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(7~15) n - 7 8(15 +(n-7) - n) ashr_9 |
| */ |
| .p2align 4 |
| L(ashr_9): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $7, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -7(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $9, %ebx |
| lea 9(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_9): |
| add $16, %edi |
| jg L(nibble_ashr_9) |
| |
| L(gobble_ashr_9): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $9, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_9) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $9, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_9) |
| |
| .p2align 4 |
| L(nibble_ashr_9): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xfe00, %esi |
| jnz L(ashr_9_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $7, %ebp |
| jbe L(ashr_9_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_9) |
| |
| .p2align 4 |
| L(ashr_9_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $9, %xmm0 |
| psrldq $9, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_10 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(6~15) n - 6 9(15 +(n-6) - n) ashr_10 |
| */ |
| .p2align 4 |
| L(ashr_10): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $6, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -6(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $10, %ebx |
| lea 10(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_10): |
| add $16, %edi |
| jg L(nibble_ashr_10) |
| |
| L(gobble_ashr_10): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $10, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_10) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $10, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_10) |
| |
| .p2align 4 |
| L(nibble_ashr_10): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xfc00, %esi |
| jnz L(ashr_10_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $6, %ebp |
| jbe L(ashr_10_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_10) |
| |
| .p2align 4 |
| L(ashr_10_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $10, %xmm0 |
| psrldq $10, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_11 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(5~15) n - 5 10(15 +(n-5) - n) ashr_11 |
| */ |
| .p2align 4 |
| L(ashr_11): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $5, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -5(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $11, %ebx |
| lea 11(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_11): |
| add $16, %edi |
| jg L(nibble_ashr_11) |
| |
| L(gobble_ashr_11): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $11, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_11) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $11, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_11) |
| |
| .p2align 4 |
| L(nibble_ashr_11): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xf800, %esi |
| jnz L(ashr_11_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $5, %ebp |
| jbe L(ashr_11_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_11) |
| |
| .p2align 4 |
| L(ashr_11_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $11, %xmm0 |
| psrldq $11, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_12 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(4~15) n - 4 11(15 +(n-4) - n) ashr_12 |
| */ |
| .p2align 4 |
| L(ashr_12): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $4, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -4(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $12, %ebx |
| lea 12(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_12): |
| add $16, %edi |
| jg L(nibble_ashr_12) |
| |
| L(gobble_ashr_12): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $12, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_12) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $12, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_12) |
| |
| .p2align 4 |
| L(nibble_ashr_12): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xf000, %esi |
| jnz L(ashr_12_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $4, %ebp |
| jbe L(ashr_12_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_12) |
| |
| .p2align 4 |
| L(ashr_12_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $12, %xmm0 |
| psrldq $12, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_13 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(3~15) n - 3 12(15 +(n-3) - n) ashr_13 |
| */ |
| .p2align 4 |
| L(ashr_13): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $3, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -3(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $13, %ebx |
| lea 13(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_13): |
| add $16, %edi |
| jg L(nibble_ashr_13) |
| |
| L(gobble_ashr_13): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $13, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_13) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $13, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_13) |
| |
| .p2align 4 |
| L(nibble_ashr_13): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xe000, %esi |
| jnz L(ashr_13_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $3, %ebp |
| jbe L(ashr_13_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_13) |
| |
| .p2align 4 |
| L(ashr_13_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $13, %xmm0 |
| psrldq $13, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_14 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(2~15) n - 2 13(15 +(n-2) - n) ashr_14 |
| */ |
| .p2align 4 |
| L(ashr_14): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $2, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -2(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $14, %ebx |
| lea 14(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_14): |
| add $16, %edi |
| jg L(nibble_ashr_14) |
| |
| L(gobble_ashr_14): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $14, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_14) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $14, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_14) |
| |
| .p2align 4 |
| L(nibble_ashr_14): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0xc000, %esi |
| jnz L(ashr_14_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $2, %ebp |
| jbe L(ashr_14_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_14) |
| |
| .p2align 4 |
| L(ashr_14_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $14, %xmm0 |
| psrldq $14, %xmm3 |
| jmp L(aftertail) |
| |
| /* |
| * The following cases will be handled by ashr_14 |
| * ecx(offset of esi) eax(offset of edi) relative offset corresponding case |
| * n(1~15) n - 1 14(15 +(n-1) - n) ashr_15 |
| */ |
| |
| .p2align 4 |
| L(ashr_15): |
| mov $0xffff, %esi |
| pxor %xmm0, %xmm0 |
| movdqa (%edx), %xmm2 |
| movdqa (%eax), %xmm1 |
| pcmpeqb %xmm1, %xmm0 |
| pslldq $1, %xmm2 |
| pcmpeqb %xmm1, %xmm2 |
| psubb %xmm0, %xmm2 |
| pmovmskb %xmm2, %edi |
| shr %cl, %esi |
| shr %cl, %edi |
| sub %edi, %esi |
| lea -1(%ecx), %edi |
| jnz L(less32bytes) |
| |
| UPDATE_STRNCMP_COUNTER |
| |
| movdqa (%edx), %xmm3 |
| pxor %xmm0, %xmm0 |
| mov $16, %ecx |
| or $15, %ebx |
| lea 15(%edx), %edi |
| and $0xfff, %edi |
| sub $0x1000, %edi |
| |
| .p2align 4 |
| L(loop_ashr_15): |
| add $16, %edi |
| jg L(nibble_ashr_15) |
| |
| L(gobble_ashr_15): |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $15, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| |
| add $16, %edi |
| jg L(nibble_ashr_15) |
| |
| movdqa (%eax, %ecx), %xmm1 |
| movdqa (%edx, %ecx), %xmm2 |
| movdqa %xmm2, %xmm4 |
| |
| palignr $15, %xmm3, %xmm2 |
| |
| pcmpeqb %xmm1, %xmm0 |
| pcmpeqb %xmm2, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| sub $0xffff, %esi |
| jnz L(exit) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $16, %ebp |
| lea -16(%ebp), %ebp |
| jbe L(more8byteseq) |
| #endif |
| add $16, %ecx |
| movdqa %xmm4, %xmm3 |
| jmp L(loop_ashr_15) |
| |
| .p2align 4 |
| L(nibble_ashr_15): |
| pcmpeqb %xmm3, %xmm0 |
| pmovmskb %xmm0, %esi |
| test $0x8000, %esi |
| jnz L(ashr_15_exittail) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $1, %ebp |
| jbe L(ashr_15_exittail) |
| #endif |
| pxor %xmm0, %xmm0 |
| sub $0x1000, %edi |
| jmp L(gobble_ashr_15) |
| |
| .p2align 4 |
| L(ashr_15_exittail): |
| movdqa (%eax, %ecx), %xmm1 |
| psrldq $15, %xmm0 |
| psrldq $15, %xmm3 |
| jmp L(aftertail) |
| |
| .p2align 4 |
| L(aftertail): |
| pcmpeqb %xmm3, %xmm1 |
| psubb %xmm0, %xmm1 |
| pmovmskb %xmm1, %esi |
| not %esi |
| L(exit): |
| mov %ebx, %edi |
| and $0x1f, %edi |
| lea -16(%edi, %ecx), %edi |
| L(less32bytes): |
| add %edi, %edx |
| add %ecx, %eax |
| test $0x20, %ebx |
| jz L(ret2) |
| xchg %eax, %edx |
| |
| .p2align 4 |
| L(ret2): |
| mov %esi, %ecx |
| POP (%esi) |
| POP (%edi) |
| POP (%ebx) |
| L(less16bytes): |
| test %cl, %cl |
| jz L(2next_8_bytes) |
| |
| test $0x01, %cl |
| jnz L(Byte0) |
| |
| test $0x02, %cl |
| jnz L(Byte1) |
| |
| test $0x04, %cl |
| jnz L(Byte2) |
| |
| test $0x08, %cl |
| jnz L(Byte3) |
| |
| test $0x10, %cl |
| jnz L(Byte4) |
| |
| test $0x20, %cl |
| jnz L(Byte5) |
| |
| test $0x40, %cl |
| jnz L(Byte6) |
| #ifdef USE_AS_STRNCMP |
| cmp $7, %ebp |
| jbe L(eq) |
| #endif |
| |
| movzx 7(%eax), %ecx |
| movzx 7(%edx), %eax |
| |
| sub %ecx, %eax |
| RETURN |
| |
| L(Byte0): |
| #ifdef USE_AS_STRNCMP |
| cmp $0, %ebp |
| jbe L(eq) |
| #endif |
| movzx (%eax), %ecx |
| movzx (%edx), %eax |
| |
| sub %ecx, %eax |
| RETURN |
| |
| L(Byte1): |
| #ifdef USE_AS_STRNCMP |
| cmp $1, %ebp |
| jbe L(eq) |
| #endif |
| movzx 1(%eax), %ecx |
| movzx 1(%edx), %eax |
| |
| sub %ecx, %eax |
| RETURN |
| |
| L(Byte2): |
| #ifdef USE_AS_STRNCMP |
| cmp $2, %ebp |
| jbe L(eq) |
| #endif |
| movzx 2(%eax), %ecx |
| movzx 2(%edx), %eax |
| |
| sub %ecx, %eax |
| RETURN |
| |
| L(Byte3): |
| #ifdef USE_AS_STRNCMP |
| cmp $3, %ebp |
| jbe L(eq) |
| #endif |
| movzx 3(%eax), %ecx |
| movzx 3(%edx), %eax |
| |
| sub %ecx, %eax |
| RETURN |
| |
| L(Byte4): |
| #ifdef USE_AS_STRNCMP |
| cmp $4, %ebp |
| jbe L(eq) |
| #endif |
| movzx 4(%eax), %ecx |
| movzx 4(%edx), %eax |
| |
| sub %ecx, %eax |
| RETURN |
| |
| L(Byte5): |
| #ifdef USE_AS_STRNCMP |
| cmp $5, %ebp |
| jbe L(eq) |
| #endif |
| movzx 5(%eax), %ecx |
| movzx 5(%edx), %eax |
| |
| sub %ecx, %eax |
| RETURN |
| |
| L(Byte6): |
| #ifdef USE_AS_STRNCMP |
| cmp $6, %ebp |
| jbe L(eq) |
| #endif |
| movzx 6(%eax), %ecx |
| movzx 6(%edx), %eax |
| |
| sub %ecx, %eax |
| RETURN |
| |
| L(2next_8_bytes): |
| add $8, %eax |
| add $8, %edx |
| #ifdef USE_AS_STRNCMP |
| cmp $8, %ebp |
| lea -8(%ebp), %ebp |
| jbe L(eq) |
| #endif |
| |
| test $0x01, %ch |
| jnz L(Byte0) |
| |
| test $0x02, %ch |
| jnz L(Byte1) |
| |
| test $0x04, %ch |
| jnz L(Byte2) |
| |
| test $0x08, %ch |
| jnz L(Byte3) |
| |
| test $0x10, %ch |
| jnz L(Byte4) |
| |
| test $0x20, %ch |
| jnz L(Byte5) |
| |
| test $0x40, %ch |
| jnz L(Byte6) |
| |
| #ifdef USE_AS_STRNCMP |
| cmp $7, %ebp |
| jbe L(eq) |
| #endif |
| movzx 7(%eax), %ecx |
| movzx 7(%edx), %eax |
| |
| sub %ecx, %eax |
| RETURN |
| |
| L(neq): |
| mov $1, %eax |
| ja L(neq_bigger) |
| neg %eax |
| L(neq_bigger): |
| #ifdef USE_AS_STRNCMP |
| POP (%ebp) |
| #endif |
| ret |
| |
| #ifdef USE_AS_STRNCMP |
| .p2align 4 |
| cfi_restore_state |
| L(more8byteseq): |
| POP (%esi) |
| POP (%edi) |
| POP (%ebx) |
| #endif |
| |
| L(eq): |
| |
| #ifdef USE_AS_STRNCMP |
| POP (%ebp) |
| #endif |
| xorl %eax, %eax |
| ret |
| |
| #ifdef USE_AS_STRNCMP |
| .p2align 4 |
| CFI_PUSH (%ebp) |
| L(less16bytes_sncmp): |
| test %ebp, %ebp |
| jz L(eq) |
| |
| movzbl (%eax), %ecx |
| cmpb %cl, (%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $1, %ebp |
| je L(eq) |
| |
| movzbl 1(%eax), %ecx |
| cmpb %cl, 1(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $2, %ebp |
| je L(eq) |
| |
| movzbl 2(%eax), %ecx |
| cmpb %cl, 2(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $3, %ebp |
| je L(eq) |
| |
| movzbl 3(%eax), %ecx |
| cmpb %cl, 3(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $4, %ebp |
| je L(eq) |
| |
| movzbl 4(%eax), %ecx |
| cmpb %cl, 4(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $5, %ebp |
| je L(eq) |
| |
| movzbl 5(%eax), %ecx |
| cmpb %cl, 5(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $6, %ebp |
| je L(eq) |
| |
| movzbl 6(%eax), %ecx |
| cmpb %cl, 6(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $7, %ebp |
| je L(eq) |
| |
| movzbl 7(%eax), %ecx |
| cmpb %cl, 7(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| |
| cmp $8, %ebp |
| je L(eq) |
| |
| movzbl 8(%eax), %ecx |
| cmpb %cl, 8(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $9, %ebp |
| je L(eq) |
| |
| movzbl 9(%eax), %ecx |
| cmpb %cl, 9(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $10, %ebp |
| je L(eq) |
| |
| movzbl 10(%eax), %ecx |
| cmpb %cl, 10(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $11, %ebp |
| je L(eq) |
| |
| movzbl 11(%eax), %ecx |
| cmpb %cl, 11(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| |
| cmp $12, %ebp |
| je L(eq) |
| |
| movzbl 12(%eax), %ecx |
| cmpb %cl, 12(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $13, %ebp |
| je L(eq) |
| |
| movzbl 13(%eax), %ecx |
| cmpb %cl, 13(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $14, %ebp |
| je L(eq) |
| |
| movzbl 14(%eax), %ecx |
| cmpb %cl, 14(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| cmp $15, %ebp |
| je L(eq) |
| |
| movzbl 15(%eax), %ecx |
| cmpb %cl, 15(%edx) |
| jne L(neq) |
| test %cl, %cl |
| je L(eq) |
| |
| POP (%ebp) |
| xor %eax, %eax |
| ret |
| #endif |
| |
| END (STRCMP) |
| |
| #endif |
